Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig
index 22cf04f..604f65f 100644
--- a/fs/cifs/Kconfig
+++ b/fs/cifs/Kconfig
@@ -202,7 +202,7 @@
help
Enables SMB Direct support for SMB 3.0, 3.02 and 3.1.1.
SMB Direct allows transferring SMB packets over RDMA. If unsure,
- say N.
+ say Y.
config CIFS_FSCACHE
bool "Provide CIFS client caching support"
diff --git a/fs/cifs/Makefile b/fs/cifs/Makefile
index 51bae93..cd17d0e 100644
--- a/fs/cifs/Makefile
+++ b/fs/cifs/Makefile
@@ -10,7 +10,7 @@
cifs_unicode.o nterr.o cifsencrypt.o \
readdir.o ioctl.o sess.o export.o smb1ops.o winucase.o \
smb2ops.o smb2maperror.o smb2transport.o \
- smb2misc.o smb2pdu.o smb2inode.o smb2file.o cifsacl.o
+ smb2misc.o smb2pdu.o smb2inode.o smb2file.o cifsacl.o fs_context.o
cifs-$(CONFIG_CIFS_XATTR) += xattr.o
diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c
index b7420e6..0f2adec 100644
--- a/fs/cifs/cache.c
+++ b/fs/cifs/cache.c
@@ -53,13 +53,6 @@
.type = FSCACHE_COOKIE_TYPE_INDEX,
};
-/*
- * Auxiliary data attached to CIFS superblock within the cache
- */
-struct cifs_fscache_super_auxdata {
- u64 resource_id; /* unique server resource id */
-};
-
char *extract_sharename(const char *treename)
{
const char *src;
@@ -98,6 +91,8 @@
memset(&auxdata, 0, sizeof(auxdata));
auxdata.resource_id = tcon->resource_id;
+ auxdata.vol_create_time = tcon->vol_create_time;
+ auxdata.vol_serial_number = tcon->vol_serial_number;
if (memcmp(data, &auxdata, datalen) != 0)
return FSCACHE_CHECKAUX_OBSOLETE;
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index efb2928..53588d7 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -122,6 +122,27 @@
}
static void
+cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
+{
+ struct TCP_Server_Info *server = chan->server;
+
+ seq_printf(m, "\t\tChannel %d Number of credits: %d Dialect 0x%x "
+ "TCP status: %d Instance: %d Local Users To Server: %d "
+ "SecMode: 0x%x Req On Wire: %d In Send: %d "
+ "In MaxReq Wait: %d\n",
+ i+1,
+ server->credits,
+ server->dialect,
+ server->tcpStatus,
+ server->reconnect_instance,
+ server->srv_count,
+ server->sec_mode,
+ in_flight(server),
+ atomic_read(&server->in_send),
+ atomic_read(&server->num_waiters));
+}
+
+static void
cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
{
struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
@@ -302,10 +323,8 @@
atomic_read(&server->smbd_conn->send_credits),
atomic_read(&server->smbd_conn->receive_credits),
server->smbd_conn->receive_credit_target);
- seq_printf(m, "\nPending send_pending: %x "
- "send_payload_pending: %x",
- atomic_read(&server->smbd_conn->send_pending),
- atomic_read(&server->smbd_conn->send_payload_pending));
+ seq_printf(m, "\nPending send_pending: %x ",
+ atomic_read(&server->smbd_conn->send_pending));
seq_printf(m, "\nReceive buffers count_receive_queue: %x "
"count_empty_packet_queue: %x",
server->smbd_conn->count_receive_queue,
@@ -356,6 +375,10 @@
ses->ses_count, ses->serverOS, ses->serverNOS,
ses->capabilities, ses->status);
}
+
+ seq_printf(m,"Security type: %s\n",
+ get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
+
if (server->rdma)
seq_printf(m, "RDMA\n\t");
seq_printf(m, "TCP status: %d Instance: %d\n\tLocal Users To "
@@ -365,11 +388,10 @@
server->srv_count,
server->sec_mode, in_flight(server));
-#ifdef CONFIG_CIFS_STATS2
seq_printf(m, " In Send: %d In MaxReq Wait: %d",
atomic_read(&server->in_send),
atomic_read(&server->num_waiters));
-#endif
+
/* dump session id helpful for use with network trace */
seq_printf(m, " SessionId: 0x%llx", ses->Suid);
if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
@@ -377,7 +399,18 @@
if (ses->sign)
seq_puts(m, " signed");
- seq_puts(m, "\n\tShares:");
+ seq_printf(m, "\n\tUser: %d Cred User: %d",
+ from_kuid(&init_user_ns, ses->linux_uid),
+ from_kuid(&init_user_ns, ses->cred_uid));
+
+ if (ses->chan_count > 1) {
+ seq_printf(m, "\n\n\tExtra Channels: %zu\n",
+ ses->chan_count-1);
+ for (j = 1; j < ses->chan_count; j++)
+ cifs_dump_channel(m, j, &ses->chans[j]);
+ }
+
+ seq_puts(m, "\n\n\tShares:");
j = 0;
seq_printf(m, "\n\t%d) IPC: ", j);
@@ -415,8 +448,13 @@
seq_printf(m, "\n\tServer interfaces: %zu\n",
ses->iface_count);
for (j = 0; j < ses->iface_count; j++) {
+ struct cifs_server_iface *iface;
+
+ iface = &ses->iface_list[j];
seq_printf(m, "\t%d)", j);
- cifs_dump_iface(m, &ses->iface_list[j]);
+ cifs_dump_iface(m, iface);
+ if (is_ses_using_iface(ses, iface))
+ seq_puts(m, "\t\t[CONNECTED]\n");
}
spin_unlock(&ses->iface_lock);
}
@@ -579,12 +617,12 @@
return single_open(file, cifs_stats_proc_show, NULL);
}
-static const struct file_operations cifs_stats_proc_fops = {
- .open = cifs_stats_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_stats_proc_write,
+static const struct proc_ops cifs_stats_proc_ops = {
+ .proc_open = cifs_stats_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+ .proc_write = cifs_stats_proc_write,
};
#ifdef CONFIG_CIFS_SMB_DIRECT
@@ -608,12 +646,12 @@
return single_open(file, name##_proc_show, NULL); \
} \
\
-static const struct file_operations cifs_##name##_proc_fops = { \
- .open = name##_open, \
- .read = seq_read, \
- .llseek = seq_lseek, \
- .release = single_release, \
- .write = name##_write, \
+static const struct proc_ops cifs_##name##_proc_fops = { \
+ .proc_open = name##_open, \
+ .proc_read = seq_read, \
+ .proc_lseek = seq_lseek, \
+ .proc_release = single_release, \
+ .proc_write = name##_write, \
}
PROC_FILE_DEFINE(rdma_readwrite_threshold);
@@ -627,11 +665,11 @@
#endif
static struct proc_dir_entry *proc_fs_cifs;
-static const struct file_operations cifsFYI_proc_fops;
-static const struct file_operations cifs_lookup_cache_proc_fops;
-static const struct file_operations traceSMB_proc_fops;
-static const struct file_operations cifs_security_flags_proc_fops;
-static const struct file_operations cifs_linux_ext_proc_fops;
+static const struct proc_ops cifsFYI_proc_ops;
+static const struct proc_ops cifs_lookup_cache_proc_ops;
+static const struct proc_ops traceSMB_proc_ops;
+static const struct proc_ops cifs_security_flags_proc_ops;
+static const struct proc_ops cifs_linux_ext_proc_ops;
void
cifs_proc_init(void)
@@ -646,18 +684,18 @@
proc_create_single("open_files", 0400, proc_fs_cifs,
cifs_debug_files_proc_show);
- proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_fops);
- proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_fops);
- proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_fops);
+ proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
+ proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
+ proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
- &cifs_linux_ext_proc_fops);
+ &cifs_linux_ext_proc_ops);
proc_create("SecurityFlags", 0644, proc_fs_cifs,
- &cifs_security_flags_proc_fops);
+ &cifs_security_flags_proc_ops);
proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
- &cifs_lookup_cache_proc_fops);
+ &cifs_lookup_cache_proc_ops);
#ifdef CONFIG_CIFS_DFS_UPCALL
- proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_fops);
+ proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
#endif
#ifdef CONFIG_CIFS_SMB_DIRECT
@@ -742,12 +780,12 @@
return count;
}
-static const struct file_operations cifsFYI_proc_fops = {
- .open = cifsFYI_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifsFYI_proc_write,
+static const struct proc_ops cifsFYI_proc_ops = {
+ .proc_open = cifsFYI_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+ .proc_write = cifsFYI_proc_write,
};
static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
@@ -773,12 +811,12 @@
return count;
}
-static const struct file_operations cifs_linux_ext_proc_fops = {
- .open = cifs_linux_ext_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_linux_ext_proc_write,
+static const struct proc_ops cifs_linux_ext_proc_ops = {
+ .proc_open = cifs_linux_ext_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+ .proc_write = cifs_linux_ext_proc_write,
};
static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
@@ -804,12 +842,12 @@
return count;
}
-static const struct file_operations cifs_lookup_cache_proc_fops = {
- .open = cifs_lookup_cache_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_lookup_cache_proc_write,
+static const struct proc_ops cifs_lookup_cache_proc_ops = {
+ .proc_open = cifs_lookup_cache_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+ .proc_write = cifs_lookup_cache_proc_write,
};
static int traceSMB_proc_show(struct seq_file *m, void *v)
@@ -835,12 +873,12 @@
return count;
}
-static const struct file_operations traceSMB_proc_fops = {
- .open = traceSMB_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = traceSMB_proc_write,
+static const struct proc_ops traceSMB_proc_ops = {
+ .proc_open = traceSMB_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+ .proc_write = traceSMB_proc_write,
};
static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
@@ -946,12 +984,12 @@
return count;
}
-static const struct file_operations cifs_security_flags_proc_fops = {
- .open = cifs_security_flags_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_security_flags_proc_write,
+static const struct proc_ops cifs_security_flags_proc_ops = {
+ .proc_open = cifs_security_flags_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+ .proc_write = cifs_security_flags_proc_write,
};
#else
inline void cifs_proc_init(void)
diff --git a/fs/cifs/cifs_debug.h b/fs/cifs/cifs_debug.h
index 100b005..5e66dab 100644
--- a/fs/cifs/cifs_debug.h
+++ b/fs/cifs/cifs_debug.h
@@ -8,6 +8,12 @@
#ifndef _H_CIFS_DEBUG
#define _H_CIFS_DEBUG
+#ifdef pr_fmt
+#undef pr_fmt
+#endif
+
+#define pr_fmt(fmt) "CIFS: " fmt
+
void cifs_dump_mem(char *label, void *data, int length);
void cifs_dump_detail(void *buf, struct TCP_Server_Info *ptcp_info);
void cifs_dump_mids(struct TCP_Server_Info *);
@@ -46,92 +52,81 @@
*/
/* Information level messages, minor events */
-#define cifs_info_func(ratefunc, fmt, ...) \
-do { \
- pr_info_ ## ratefunc("CIFS: " fmt, ##__VA_ARGS__); \
-} while (0)
+#define cifs_info_func(ratefunc, fmt, ...) \
+ pr_info_ ## ratefunc(fmt, ##__VA_ARGS__)
-#define cifs_info(fmt, ...) \
-do { \
- cifs_info_func(ratelimited, fmt, ##__VA_ARGS__); \
-} while (0)
+#define cifs_info(fmt, ...) \
+ cifs_info_func(ratelimited, fmt, ##__VA_ARGS__)
/* information message: e.g., configuration, major event */
-#define cifs_dbg_func(ratefunc, type, fmt, ...) \
-do { \
- if ((type) & FYI && cifsFYI & CIFS_INFO) { \
- pr_debug_ ## ratefunc("%s: " \
- fmt, __FILE__, ##__VA_ARGS__); \
- } else if ((type) & VFS) { \
- pr_err_ ## ratefunc("CIFS VFS: " \
- fmt, ##__VA_ARGS__); \
- } else if ((type) & NOISY && (NOISY != 0)) { \
- pr_debug_ ## ratefunc(fmt, ##__VA_ARGS__); \
- } \
+#define cifs_dbg_func(ratefunc, type, fmt, ...) \
+do { \
+ if ((type) & FYI && cifsFYI & CIFS_INFO) { \
+ pr_debug_ ## ratefunc("%s: " fmt, \
+ __FILE__, ##__VA_ARGS__); \
+ } else if ((type) & VFS) { \
+ pr_err_ ## ratefunc("VFS: " fmt, ##__VA_ARGS__); \
+ } else if ((type) & NOISY && (NOISY != 0)) { \
+ pr_debug_ ## ratefunc(fmt, ##__VA_ARGS__); \
+ } \
} while (0)
-#define cifs_dbg(type, fmt, ...) \
-do { \
- if ((type) & ONCE) \
- cifs_dbg_func(once, \
- type, fmt, ##__VA_ARGS__); \
- else \
- cifs_dbg_func(ratelimited, \
- type, fmt, ##__VA_ARGS__); \
+#define cifs_dbg(type, fmt, ...) \
+do { \
+ if ((type) & ONCE) \
+ cifs_dbg_func(once, type, fmt, ##__VA_ARGS__); \
+ else \
+ cifs_dbg_func(ratelimited, type, fmt, ##__VA_ARGS__); \
} while (0)
-#define cifs_server_dbg_func(ratefunc, type, fmt, ...) \
-do { \
- const char *sn = ""; \
- if (server && server->hostname) \
- sn = server->hostname; \
- if ((type) & FYI && cifsFYI & CIFS_INFO) { \
- pr_debug_ ## ratefunc("%s: \\\\%s " fmt, \
- __FILE__, sn, ##__VA_ARGS__); \
- } else if ((type) & VFS) { \
- pr_err_ ## ratefunc("CIFS VFS: \\\\%s " fmt, \
- sn, ##__VA_ARGS__); \
- } else if ((type) & NOISY && (NOISY != 0)) { \
- pr_debug_ ## ratefunc("\\\\%s " fmt, \
- sn, ##__VA_ARGS__); \
- } \
+#define cifs_server_dbg_func(ratefunc, type, fmt, ...) \
+do { \
+ const char *sn = ""; \
+ if (server && server->hostname) \
+ sn = server->hostname; \
+ if ((type) & FYI && cifsFYI & CIFS_INFO) { \
+ pr_debug_ ## ratefunc("%s: \\\\%s " fmt, \
+ __FILE__, sn, ##__VA_ARGS__); \
+ } else if ((type) & VFS) { \
+ pr_err_ ## ratefunc("VFS: \\\\%s " fmt, \
+ sn, ##__VA_ARGS__); \
+ } else if ((type) & NOISY && (NOISY != 0)) { \
+ pr_debug_ ## ratefunc("\\\\%s " fmt, \
+ sn, ##__VA_ARGS__); \
+ } \
} while (0)
-#define cifs_server_dbg(type, fmt, ...) \
-do { \
- if ((type) & ONCE) \
- cifs_server_dbg_func(once, \
- type, fmt, ##__VA_ARGS__); \
- else \
- cifs_server_dbg_func(ratelimited, \
- type, fmt, ##__VA_ARGS__); \
+#define cifs_server_dbg(type, fmt, ...) \
+do { \
+ if ((type) & ONCE) \
+ cifs_server_dbg_func(once, type, fmt, ##__VA_ARGS__); \
+ else \
+ cifs_server_dbg_func(ratelimited, type, fmt, \
+ ##__VA_ARGS__); \
} while (0)
-#define cifs_tcon_dbg_func(ratefunc, type, fmt, ...) \
-do { \
- const char *tn = ""; \
- if (tcon && tcon->treeName) \
- tn = tcon->treeName; \
- if ((type) & FYI && cifsFYI & CIFS_INFO) { \
- pr_debug_ ## ratefunc("%s: %s " fmt, \
- __FILE__, tn, ##__VA_ARGS__); \
- } else if ((type) & VFS) { \
- pr_err_ ## ratefunc("CIFS VFS: %s " fmt, \
- tn, ##__VA_ARGS__); \
- } else if ((type) & NOISY && (NOISY != 0)) { \
- pr_debug_ ## ratefunc("%s " fmt, \
- tn, ##__VA_ARGS__); \
- } \
+#define cifs_tcon_dbg_func(ratefunc, type, fmt, ...) \
+do { \
+ const char *tn = ""; \
+ if (tcon && tcon->treeName) \
+ tn = tcon->treeName; \
+ if ((type) & FYI && cifsFYI & CIFS_INFO) { \
+ pr_debug_ ## ratefunc("%s: %s " fmt, \
+ __FILE__, tn, ##__VA_ARGS__); \
+ } else if ((type) & VFS) { \
+ pr_err_ ## ratefunc("VFS: %s " fmt, tn, ##__VA_ARGS__); \
+ } else if ((type) & NOISY && (NOISY != 0)) { \
+ pr_debug_ ## ratefunc("%s " fmt, tn, ##__VA_ARGS__); \
+ } \
} while (0)
-#define cifs_tcon_dbg(type, fmt, ...) \
-do { \
- if ((type) & ONCE) \
- cifs_tcon_dbg_func(once, \
- type, fmt, ##__VA_ARGS__); \
- else \
- cifs_tcon_dbg_func(ratelimited, \
- type, fmt, ##__VA_ARGS__); \
+#define cifs_tcon_dbg(type, fmt, ...) \
+do { \
+ if ((type) & ONCE) \
+ cifs_tcon_dbg_func(once, type, fmt, ##__VA_ARGS__); \
+ else \
+ cifs_tcon_dbg_func(ratelimited, type, fmt, \
+ ##__VA_ARGS__); \
} while (0)
/*
@@ -159,9 +154,7 @@
} while (0)
#define cifs_info(fmt, ...) \
-do { \
- pr_info("CIFS: "fmt, ##__VA_ARGS__); \
-} while (0)
+ pr_info(fmt, ##__VA_ARGS__)
#endif
#endif /* _H_CIFS_DEBUG */
diff --git a/fs/cifs/cifs_ioctl.h b/fs/cifs/cifs_ioctl.h
index 0f0dc1c..153d5c8 100644
--- a/fs/cifs/cifs_ioctl.h
+++ b/fs/cifs/cifs_ioctl.h
@@ -65,6 +65,11 @@
__u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE];
} __packed;
+struct smb3_notify {
+ __u32 completion_filter;
+ bool watch_tree;
+} __packed;
+
#define CIFS_IOCTL_MAGIC 0xCF
#define CIFS_IOC_COPYCHUNK_FILE _IOW(CIFS_IOCTL_MAGIC, 3, int)
#define CIFS_IOC_SET_INTEGRITY _IO(CIFS_IOCTL_MAGIC, 4)
@@ -72,3 +77,4 @@
#define CIFS_ENUMERATE_SNAPSHOTS _IOR(CIFS_IOCTL_MAGIC, 6, struct smb_snapshot_array)
#define CIFS_QUERY_INFO _IOWR(CIFS_IOCTL_MAGIC, 7, struct smb_query_info)
#define CIFS_DUMP_KEY _IOWR(CIFS_IOCTL_MAGIC, 8, struct smb3_key_debug_info)
+#define CIFS_IOC_NOTIFY _IOW(CIFS_IOCTL_MAGIC, 9, struct smb3_notify)
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 7f01c6e..7b9b876 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -98,7 +98,7 @@
struct key *
cifs_get_spnego_key(struct cifs_ses *sesInfo)
{
- struct TCP_Server_Info *server = sesInfo->server;
+ struct TCP_Server_Info *server = cifs_ses_server(sesInfo);
struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
char *description, *dp;
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 1f55072..ef4784e 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -39,8 +39,6 @@
/* security id for Authenticated Users system group */
static const struct cifs_sid sid_authusers = {
1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(11)} };
-/* group users */
-static const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {} };
/* S-1-22-1 Unmapped Unix users */
static const struct cifs_sid sid_unix_users = {1, 1, {0, 0, 0, 0, 0, 22},
@@ -51,7 +49,7 @@
{cpu_to_le32(2), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} };
/*
- * See http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx
+ * See https://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx
*/
/* S-1-5-88 MS NFS and Apple style UID/GID/mode */
@@ -340,11 +338,11 @@
goto out_key_put;
}
-static int
+int
sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
struct cifs_fattr *fattr, uint sidtype)
{
- int rc;
+ int rc = 0;
struct key *sidkey;
char *sidstr;
const struct cred *saved_cred;
@@ -361,7 +359,8 @@
return -EIO;
}
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL) {
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL) ||
+ (cifs_sb_master_tcon(cifs_sb)->posix_extensions)) {
uint32_t unix_id;
bool is_group;
@@ -452,11 +451,12 @@
* fails then we just fall back to using the mnt_uid/mnt_gid.
*/
got_valid_id:
+ rc = 0;
if (sidtype == SIDOWNER)
fattr->cf_uid = fuid;
else
fattr->cf_gid = fgid;
- return 0;
+ return rc;
}
int
@@ -804,6 +804,73 @@
return;
}
+unsigned int setup_authusers_ACE(struct cifs_ace *pntace)
+{
+ int i;
+ unsigned int ace_size = 20;
+
+ pntace->type = ACCESS_ALLOWED_ACE_TYPE;
+ pntace->flags = 0x0;
+ pntace->access_req = cpu_to_le32(GENERIC_ALL);
+ pntace->sid.num_subauth = 1;
+ pntace->sid.revision = 1;
+ for (i = 0; i < NUM_AUTHS; i++)
+ pntace->sid.authority[i] = sid_authusers.authority[i];
+
+ pntace->sid.sub_auth[0] = sid_authusers.sub_auth[0];
+
+ /* size = 1 + 1 + 2 + 4 + 1 + 1 + 6 + (psid->num_subauth*4) */
+ pntace->size = cpu_to_le16(ace_size);
+ return ace_size;
+}
+
+/*
+ * Fill in the special SID based on the mode. See
+ * https://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx
+ */
+unsigned int setup_special_mode_ACE(struct cifs_ace *pntace, __u64 nmode)
+{
+ int i;
+ unsigned int ace_size = 28;
+
+ pntace->type = ACCESS_DENIED_ACE_TYPE;
+ pntace->flags = 0x0;
+ pntace->access_req = 0;
+ pntace->sid.num_subauth = 3;
+ pntace->sid.revision = 1;
+ for (i = 0; i < NUM_AUTHS; i++)
+ pntace->sid.authority[i] = sid_unix_NFS_mode.authority[i];
+
+ pntace->sid.sub_auth[0] = sid_unix_NFS_mode.sub_auth[0];
+ pntace->sid.sub_auth[1] = sid_unix_NFS_mode.sub_auth[1];
+ pntace->sid.sub_auth[2] = cpu_to_le32(nmode & 07777);
+
+ /* size = 1 + 1 + 2 + 4 + 1 + 1 + 6 + (psid->num_subauth*4) */
+ pntace->size = cpu_to_le16(ace_size);
+ return ace_size;
+}
+
+unsigned int setup_special_user_owner_ACE(struct cifs_ace *pntace)
+{
+ int i;
+ unsigned int ace_size = 28;
+
+ pntace->type = ACCESS_ALLOWED_ACE_TYPE;
+ pntace->flags = 0x0;
+ pntace->access_req = cpu_to_le32(GENERIC_ALL);
+ pntace->sid.num_subauth = 3;
+ pntace->sid.revision = 1;
+ for (i = 0; i < NUM_AUTHS; i++)
+ pntace->sid.authority[i] = sid_unix_NFS_users.authority[i];
+
+ pntace->sid.sub_auth[0] = sid_unix_NFS_users.sub_auth[0];
+ pntace->sid.sub_auth[1] = sid_unix_NFS_users.sub_auth[1];
+ pntace->sid.sub_auth[2] = cpu_to_le32(current_fsgid().val);
+
+ /* size = 1 + 1 + 2 + 4 + 1 + 1 + 6 + (psid->num_subauth*4) */
+ pntace->size = cpu_to_le16(ace_size);
+ return ace_size;
+}
static int set_chmod_dacl(struct cifs_acl *pndacl, struct cifs_sid *pownersid,
struct cifs_sid *pgrpsid, __u64 nmode, bool modefromsid)
@@ -817,23 +884,8 @@
if (modefromsid) {
struct cifs_ace *pntace =
(struct cifs_ace *)((char *)pnndacl + size);
- int i;
- pntace->type = ACCESS_ALLOWED;
- pntace->flags = 0x0;
- pntace->access_req = 0;
- pntace->sid.num_subauth = 3;
- pntace->sid.revision = 1;
- for (i = 0; i < NUM_AUTHS; i++)
- pntace->sid.authority[i] =
- sid_unix_NFS_mode.authority[i];
- pntace->sid.sub_auth[0] = sid_unix_NFS_mode.sub_auth[0];
- pntace->sid.sub_auth[1] = sid_unix_NFS_mode.sub_auth[1];
- pntace->sid.sub_auth[2] = cpu_to_le32(nmode & 07777);
-
- /* size = 1 + 1 + 2 + 4 + 1 + 1 + 6 + (psid->num_subauth*4) */
- pntace->size = cpu_to_le16(28);
- size += 28;
+ size += setup_special_mode_ACE(pntace, nmode);
num_aces++;
}
@@ -949,7 +1001,7 @@
/* Convert permission bits from mode to equivalent CIFS ACL */
static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
__u32 secdesclen, __u64 nmode, kuid_t uid, kgid_t gid,
- bool mode_from_sid, int *aclflag)
+ bool mode_from_sid, bool id_from_sid, int *aclflag)
{
int rc = 0;
__u32 dacloffset;
@@ -990,12 +1042,23 @@
if (!nowner_sid_ptr)
return -ENOMEM;
id = from_kuid(&init_user_ns, uid);
- rc = id_to_sid(id, SIDOWNER, nowner_sid_ptr);
- if (rc) {
- cifs_dbg(FYI, "%s: Mapping error %d for owner id %d\n",
- __func__, rc, id);
- kfree(nowner_sid_ptr);
- return rc;
+ if (id_from_sid) {
+ struct owner_sid *osid = (struct owner_sid *)nowner_sid_ptr;
+ /* Populate the user ownership fields S-1-5-88-1 */
+ osid->Revision = 1;
+ osid->NumAuth = 3;
+ osid->Authority[5] = 5;
+ osid->SubAuthorities[0] = cpu_to_le32(88);
+ osid->SubAuthorities[1] = cpu_to_le32(1);
+ osid->SubAuthorities[2] = cpu_to_le32(id);
+ } else { /* lookup sid with upcall */
+ rc = id_to_sid(id, SIDOWNER, nowner_sid_ptr);
+ if (rc) {
+ cifs_dbg(FYI, "%s: Mapping error %d for owner id %d\n",
+ __func__, rc, id);
+ kfree(nowner_sid_ptr);
+ return rc;
+ }
}
cifs_copy_sid(owner_sid_ptr, nowner_sid_ptr);
kfree(nowner_sid_ptr);
@@ -1010,12 +1073,23 @@
if (!ngroup_sid_ptr)
return -ENOMEM;
id = from_kgid(&init_user_ns, gid);
- rc = id_to_sid(id, SIDGROUP, ngroup_sid_ptr);
- if (rc) {
- cifs_dbg(FYI, "%s: Mapping error %d for group id %d\n",
- __func__, rc, id);
- kfree(ngroup_sid_ptr);
- return rc;
+ if (id_from_sid) {
+ struct owner_sid *gsid = (struct owner_sid *)ngroup_sid_ptr;
+ /* Populate the group ownership fields S-1-5-88-2 */
+ gsid->Revision = 1;
+ gsid->NumAuth = 3;
+ gsid->Authority[5] = 5;
+ gsid->SubAuthorities[0] = cpu_to_le32(88);
+ gsid->SubAuthorities[1] = cpu_to_le32(2);
+ gsid->SubAuthorities[2] = cpu_to_le32(id);
+ } else { /* lookup sid with upcall */
+ rc = id_to_sid(id, SIDGROUP, ngroup_sid_ptr);
+ if (rc) {
+ cifs_dbg(FYI, "%s: Mapping error %d for group id %d\n",
+ __func__, rc, id);
+ kfree(ngroup_sid_ptr);
+ return rc;
+ }
}
cifs_copy_sid(group_sid_ptr, ngroup_sid_ptr);
kfree(ngroup_sid_ptr);
@@ -1056,7 +1130,7 @@
struct cifs_ntsd *pntsd = NULL;
int oplock = 0;
unsigned int xid;
- int rc, create_options = 0;
+ int rc;
struct cifs_tcon *tcon;
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
struct cifs_fid fid;
@@ -1068,13 +1142,10 @@
tcon = tlink_tcon(tlink);
xid = get_xid();
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = READ_CONTROL;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
@@ -1119,7 +1190,7 @@
{
int oplock = 0;
unsigned int xid;
- int rc, access_flags, create_options = 0;
+ int rc, access_flags;
struct cifs_tcon *tcon;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
@@ -1132,9 +1203,6 @@
tcon = tlink_tcon(tlink);
xid = get_xid();
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
access_flags = WRITE_OWNER;
else
@@ -1143,7 +1211,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = access_flags;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
@@ -1225,7 +1293,7 @@
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
struct smb_version_operations *ops;
- bool mode_from_sid;
+ bool mode_from_sid, id_from_sid;
if (IS_ERR(tlink))
return PTR_ERR(tlink);
@@ -1268,8 +1336,13 @@
else
mode_from_sid = false;
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL)
+ id_from_sid = true;
+ else
+ id_from_sid = false;
+
rc = build_sec_desc(pntsd, pnntsd, secdesclen, nmode, uid, gid,
- mode_from_sid, &aclflag);
+ mode_from_sid, id_from_sid, &aclflag);
cifs_dbg(NOISY, "build_sec_desc rc: %d\n", rc);
diff --git a/fs/cifs/cifsacl.h b/fs/cifs/cifsacl.h
index 439b99c..45665ff 100644
--- a/fs/cifs/cifsacl.h
+++ b/fs/cifs/cifsacl.h
@@ -132,7 +132,7 @@
/*
* The current SMB3 form of security descriptor is similar to what was used for
* cifs (see above) but some fields are split, and fields in the struct below
- * matches names of fields to the the spec, MS-DTYP (see sections 2.4.5 and
+ * matches names of fields to the spec, MS-DTYP (see sections 2.4.5 and
* 2.4.6). Note that "CamelCase" fields are used in this struct in order to
* match the MS-DTYP and MS-SMB2 specs which define the wire format.
*/
@@ -147,22 +147,22 @@
} __packed;
/* Meaning of 'Control' field flags */
-#define ACL_CONTROL_SR 0x0001 /* Self relative */
-#define ACL_CONTROL_RM 0x0002 /* Resource manager control bits */
-#define ACL_CONTROL_PS 0x0004 /* SACL protected from inherits */
-#define ACL_CONTROL_PD 0x0008 /* DACL protected from inherits */
-#define ACL_CONTROL_SI 0x0010 /* SACL Auto-Inherited */
-#define ACL_CONTROL_DI 0x0020 /* DACL Auto-Inherited */
-#define ACL_CONTROL_SC 0x0040 /* SACL computed through inheritance */
-#define ACL_CONTROL_DC 0x0080 /* DACL computed through inheritence */
-#define ACL_CONTROL_SS 0x0100 /* Create server ACL */
-#define ACL_CONTROL_DT 0x0200 /* DACL provided by trusteed source */
-#define ACL_CONTROL_SD 0x0400 /* SACL defaulted */
-#define ACL_CONTROL_SP 0x0800 /* SACL is present on object */
-#define ACL_CONTROL_DD 0x1000 /* DACL defaulted */
-#define ACL_CONTROL_DP 0x2000 /* DACL is present on object */
-#define ACL_CONTROL_GD 0x4000 /* Group was defaulted */
-#define ACL_CONTROL_OD 0x8000 /* User was defaulted */
+#define ACL_CONTROL_SR 0x8000 /* Self relative */
+#define ACL_CONTROL_RM 0x4000 /* Resource manager control bits */
+#define ACL_CONTROL_PS 0x2000 /* SACL protected from inherits */
+#define ACL_CONTROL_PD 0x1000 /* DACL protected from inherits */
+#define ACL_CONTROL_SI 0x0800 /* SACL Auto-Inherited */
+#define ACL_CONTROL_DI 0x0400 /* DACL Auto-Inherited */
+#define ACL_CONTROL_SC 0x0200 /* SACL computed through inheritance */
+#define ACL_CONTROL_DC 0x0100 /* DACL computed through inheritence */
+#define ACL_CONTROL_SS 0x0080 /* Create server ACL */
+#define ACL_CONTROL_DT 0x0040 /* DACL provided by trusted source */
+#define ACL_CONTROL_SD 0x0020 /* SACL defaulted */
+#define ACL_CONTROL_SP 0x0010 /* SACL is present on object */
+#define ACL_CONTROL_DD 0x0008 /* DACL defaulted */
+#define ACL_CONTROL_DP 0x0004 /* DACL is present on object */
+#define ACL_CONTROL_GD 0x0002 /* Group was defaulted */
+#define ACL_CONTROL_OD 0x0001 /* User was defaulted */
/* Meaning of AclRevision flags */
#define ACL_REVISION 0x02 /* See section 2.4.4.1 of MS-DTYP */
@@ -176,6 +176,21 @@
__le16 Sbz2; /* MBZ */
} __packed;
+/*
+ * Used to store the special 'NFS SIDs' used to persist the POSIX uid and gid
+ * See http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx
+ */
+struct owner_sid {
+ u8 Revision;
+ u8 NumAuth;
+ u8 Authority[6];
+ __le32 SubAuthorities[3];
+} __packed;
+
+struct owner_group_sids {
+ struct owner_sid owner;
+ struct owner_sid group;
+} __packed;
/*
* Minimum security identifier can be one for system defined Users
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 97b7497..9daa256 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -520,7 +520,7 @@
rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
if (rc) {
- cifs_dbg(VFS, "%s: could not init hmacmd5\n", __func__);
+ cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__);
return rc;
}
@@ -624,7 +624,7 @@
rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
if (rc) {
- cifs_dbg(VFS, "%s: could not init hmacmd5\n", __func__);
+ cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__);
return rc;
}
@@ -723,7 +723,7 @@
/* calculate ntlmv2_hash */
rc = calc_ntlmv2_hash(ses, ntlmv2_hash, nls_cp);
if (rc) {
- cifs_dbg(VFS, "could not get v2 hash rc %d\n", rc);
+ cifs_dbg(VFS, "Could not get v2 hash rc %d\n", rc);
goto unlock;
}
@@ -783,7 +783,7 @@
ctx_arc4 = kmalloc(sizeof(*ctx_arc4), GFP_KERNEL);
if (!ctx_arc4) {
- cifs_dbg(VFS, "could not allocate arc4 context\n");
+ cifs_dbg(VFS, "Could not allocate arc4 context\n");
return -ENOMEM;
}
@@ -797,7 +797,7 @@
ses->auth_key.len = CIFS_SESS_KEY_SIZE;
memzero_explicit(sec_key, CIFS_SESS_KEY_SIZE);
- kzfree(ctx_arc4);
+ kfree_sensitive(ctx_arc4);
return 0;
}
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 41b3c5f..aa5a4d7 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -71,6 +71,8 @@
bool linuxExtEnabled = true;
bool lookupCacheEnabled = true;
bool disable_legacy_dialects; /* false by default */
+bool enable_gcm_256; /* false by default, change when more servers support it */
+bool require_gcm_256; /* false by default */
unsigned int global_secflags = CIFSSEC_DEF;
/* unsigned int ntlmv2_support = 0; */
unsigned int sign_CIFS_PDUs = 1;
@@ -104,6 +106,12 @@
module_param(enable_oplocks, bool, 0644);
MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1");
+module_param(enable_gcm_256, bool, 0644);
+MODULE_PARM_DESC(enable_gcm_256, "Enable requesting strongest (256 bit) GCM encryption. Default: n/N/0");
+
+module_param(require_gcm_256, bool, 0644);
+MODULE_PARM_DESC(require_gcm_256, "Require strongest (256 bit) GCM encryption. Default: n/N/0");
+
module_param(disable_legacy_dialects, bool, 0644);
MODULE_PARM_DESC(disable_legacy_dialects, "To improve security it may be "
"helpful to restrict the ability to "
@@ -275,7 +283,7 @@
buf->f_ffree = 0; /* unlimited */
if (server->ops->queryfs)
- rc = server->ops->queryfs(xid, tcon, buf);
+ rc = server->ops->queryfs(xid, tcon, cifs_sb, buf);
free_xid(xid);
return rc;
@@ -534,6 +542,8 @@
seq_puts(s, ",signloosely");
if (tcon->nocase)
seq_puts(s, ",nocase");
+ if (tcon->nodelete)
+ seq_puts(s, ",nodelete");
if (tcon->local_lease)
seq_puts(s, ",locallease");
if (tcon->retry)
@@ -620,6 +630,10 @@
/* convert actimeo and display it in seconds */
seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ);
+ if (tcon->ses->chan_max > 1)
+ seq_printf(s, ",multichannel,max_channels=%zu",
+ tcon->ses->chan_max);
+
return 0;
}
@@ -732,11 +746,6 @@
struct inode *dir = d_inode(dentry);
struct dentry *child;
- if (!dir) {
- dput(dentry);
- dentry = ERR_PTR(-ENOENT);
- break;
- }
if (!S_ISDIR(dir->i_mode)) {
dput(dentry);
dentry = ERR_PTR(-ENOTDIR);
@@ -753,7 +762,7 @@
while (*s && *s != sep)
s++;
- child = lookup_one_len_unlocked(p, dentry, s - p);
+ child = lookup_positive_unlocked(p, dentry, s - p);
dput(dentry);
dentry = child;
} while (!IS_ERR(dentry));
@@ -855,6 +864,7 @@
out_super:
deactivate_locked_super(sb);
+ return root;
out:
cifs_cleanup_volume_info(volume_info);
return root;
@@ -1019,7 +1029,7 @@
.name = "cifs",
.mount = cifs_do_mount,
.kill_sb = cifs_kill_sb,
- /* .fs_flags */
+ .fs_flags = FS_RENAME_DOES_D_MOVE,
};
MODULE_ALIAS_FS("cifs");
@@ -1028,7 +1038,7 @@
.name = "smb3",
.mount = smb3_do_mount,
.kill_sb = cifs_kill_sb,
- /* .fs_flags */
+ .fs_flags = FS_RENAME_DOES_D_MOVE,
};
MODULE_ALIAS_FS("smb3");
MODULE_ALIAS("smb3");
@@ -1209,6 +1219,10 @@
{
unsigned int xid = get_xid();
ssize_t rc;
+ struct cifsFileInfo *cfile = dst_file->private_data;
+
+ if (cfile->swapfile)
+ return -EOPNOTSUPP;
rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff,
len, flags);
@@ -1226,6 +1240,7 @@
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
+ .flock = cifs_flock,
.fsync = cifs_fsync,
.flush = cifs_flush,
.mmap = cifs_file_mmap,
@@ -1245,6 +1260,7 @@
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
+ .flock = cifs_flock,
.fsync = cifs_strict_fsync,
.flush = cifs_flush,
.mmap = cifs_file_strict_mmap,
@@ -1264,6 +1280,7 @@
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
+ .flock = cifs_flock,
.fsync = cifs_fsync,
.flush = cifs_flush,
.mmap = cifs_file_mmap,
@@ -1550,7 +1567,7 @@
/*
* Consider in future setting limit!=0 maybe to min(num_of_cores - 1, 3)
* so that we don't launch too many worker threads but
- * Documentation/workqueue.txt recommends setting it to 0
+ * Documentation/core-api/workqueue.rst recommends setting it to 0
*/
/* WQ_UNBOUND allows decrypt tasks to run on any CPU */
@@ -1680,17 +1697,17 @@
("VFS to access SMB3 servers e.g. Samba, Macs, Azure and Windows (and "
"also older servers complying with the SNIA CIFS Specification)");
MODULE_VERSION(CIFS_VERSION);
-MODULE_SOFTDEP("pre: ecb");
-MODULE_SOFTDEP("pre: hmac");
-MODULE_SOFTDEP("pre: md4");
-MODULE_SOFTDEP("pre: md5");
-MODULE_SOFTDEP("pre: nls");
-MODULE_SOFTDEP("pre: aes");
-MODULE_SOFTDEP("pre: cmac");
-MODULE_SOFTDEP("pre: sha256");
-MODULE_SOFTDEP("pre: sha512");
-MODULE_SOFTDEP("pre: aead2");
-MODULE_SOFTDEP("pre: ccm");
-MODULE_SOFTDEP("pre: gcm");
+MODULE_SOFTDEP("ecb");
+MODULE_SOFTDEP("hmac");
+MODULE_SOFTDEP("md4");
+MODULE_SOFTDEP("md5");
+MODULE_SOFTDEP("nls");
+MODULE_SOFTDEP("aes");
+MODULE_SOFTDEP("cmac");
+MODULE_SOFTDEP("sha256");
+MODULE_SOFTDEP("sha512");
+MODULE_SOFTDEP("aead2");
+MODULE_SOFTDEP("ccm");
+MODULE_SOFTDEP("gcm");
module_init(init_cifs)
module_exit(exit_cifs)
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index bc4ca94..905d038 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -108,6 +108,7 @@
extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
extern ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from);
extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
+extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock);
extern int cifs_lock(struct file *, int, struct file_lock *);
extern int cifs_fsync(struct file *, loff_t, loff_t, int);
extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
@@ -148,9 +149,12 @@
size_t len, unsigned int flags);
extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
+extern void cifs_setsize(struct inode *inode, loff_t offset);
+extern int cifs_truncate_page(struct address_space *mapping, loff_t from);
+
#ifdef CONFIG_CIFS_NFSD_EXPORT
extern const struct export_operations cifs_export_ops;
#endif /* CONFIG_CIFS_NFSD_EXPORT */
-#define CIFS_VERSION "2.23"
+#define CIFS_VERSION "2.29"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 9c0e348..6599069 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -195,18 +195,6 @@
unsigned int rq_tailsz; /* length of last page */
};
-enum smb_version {
- Smb_1 = 1,
- Smb_20,
- Smb_21,
- Smb_30,
- Smb_302,
- Smb_311,
- Smb_3any,
- Smb_default,
- Smb_version_err
-};
-
struct mid_q_entry;
struct TCP_Server_Info;
struct cifsFileInfo;
@@ -230,7 +218,8 @@
bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *);
/* setup request: allocate mid, sign message */
struct mid_q_entry *(*setup_request)(struct cifs_ses *,
- struct smb_rqst *);
+ struct TCP_Server_Info *,
+ struct smb_rqst *);
/* setup async request: allocate mid, sign message */
struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *,
struct smb_rqst *);
@@ -267,7 +256,7 @@
/* verify the message */
int (*check_message)(char *, unsigned int, struct TCP_Server_Info *);
bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
- int (*handle_cancelled_mid)(char *, struct TCP_Server_Info *);
+ int (*handle_cancelled_mid)(struct mid_q_entry *, struct TCP_Server_Info *);
void (*downgrade_oplock)(struct TCP_Server_Info *server,
struct cifsInodeInfo *cinode, __u32 oplock,
unsigned int epoch, bool *purge_cache);
@@ -297,7 +286,8 @@
const char *, struct dfs_info3_param **,
unsigned int *, const struct nls_table *, int);
/* informational QFS call */
- void (*qfs_tcon)(const unsigned int, struct cifs_tcon *);
+ void (*qfs_tcon)(const unsigned int, struct cifs_tcon *,
+ struct cifs_sb_info *);
/* check if a path is accessible or not */
int (*is_path_accessible)(const unsigned int, struct cifs_tcon *,
struct cifs_sb_info *, const char *);
@@ -308,6 +298,10 @@
/* query file data from the server */
int (*query_file_info)(const unsigned int, struct cifs_tcon *,
struct cifs_fid *, FILE_ALL_INFO *);
+ /* query reparse tag from srv to determine which type of special file */
+ int (*query_reparse_tag)(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *path,
+ __u32 *reparse_tag);
/* get server index number */
int (*get_srv_inum)(const unsigned int, struct cifs_tcon *,
struct cifs_sb_info *, const char *,
@@ -367,6 +361,9 @@
/* close a file */
void (*close)(const unsigned int, struct cifs_tcon *,
struct cifs_fid *);
+ /* close a file, returning file attributes and timestamps */
+ void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifsFileInfo *pfile_info);
/* send a flush request to the server */
int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *);
/* async read from the server */
@@ -405,7 +402,7 @@
struct cifsInodeInfo *);
/* query remote filesystem */
int (*queryfs)(const unsigned int, struct cifs_tcon *,
- struct kstatfs *);
+ struct cifs_sb_info *, struct kstatfs *);
/* send mandatory brlock to the server */
int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64,
__u64, __u32, int, int, bool);
@@ -421,11 +418,14 @@
/* generate new lease key */
void (*new_lease_key)(struct cifs_fid *);
int (*generate_signingkey)(struct cifs_ses *);
- int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *);
+ int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *,
+ bool allocate_crypto);
int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon,
struct cifsFileInfo *src_file);
int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon,
struct cifsFileInfo *src_file, void __user *);
+ int (*notify)(const unsigned int xid, struct file *pfile,
+ void __user *pbuf);
int (*query_mf_symlink)(unsigned int, struct cifs_tcon *,
struct cifs_sb_info *, const unsigned char *,
char *, unsigned int *);
@@ -486,6 +486,7 @@
/* ioctl passthrough for query_info */
int (*ioctl_query_info)(const unsigned int xid,
struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb,
__le16 *path, int is_dir,
unsigned long p);
/* make unix special files (block, char, fifo, socket) */
@@ -501,6 +502,8 @@
struct fiemap_extent_info *, u64, u64);
/* version specific llseek implementation */
loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int);
+ /* Check for STATUS_IO_TIMEOUT */
+ bool (*is_status_io_timeout)(char *buf);
};
struct smb_version_values {
@@ -553,6 +556,7 @@
bool override_gid:1;
bool dynperm:1;
bool noperm:1;
+ bool nodelete:1;
bool mode_ace:1;
bool no_psx_acl:1; /* set if posix acl support should be disabled */
bool cifs_acl:1;
@@ -592,6 +596,10 @@
bool resilient:1; /* noresilient not required since not fored for CA */
bool domainauto:1;
bool rdma:1;
+ bool multichannel:1;
+ bool use_client_guid:1;
+ /* reuse existing guid for multichannel */
+ u8 client_guid[SMB2_CLIENT_GUID_SIZE];
unsigned int bsize;
unsigned int rsize;
unsigned int wsize;
@@ -608,6 +616,7 @@
__u64 snapshot_time; /* needed for timewarp tokens */
__u32 handle_timeout; /* persistent and durable handle timeout in ms */
unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */
+ unsigned int max_channels;
__u16 compression; /* compression algorithm 0xFFFF default 0=disabled */
bool rootfs:1; /* if it's a SMB root file system */
};
@@ -737,12 +746,12 @@
/* Total size of this PDU. Only valid from cifs_demultiplex_thread */
unsigned int pdu_size;
unsigned int total_read; /* total amount of data read in this pass */
+ atomic_t in_send; /* requests trying to send */
+ atomic_t num_waiters; /* blocked waiting to get in sendrecv */
#ifdef CONFIG_CIFS_FSCACHE
struct fscache_cookie *fscache; /* client index cache cookie */
#endif
#ifdef CONFIG_CIFS_STATS2
- atomic_t in_send; /* requests trying to send */
- atomic_t num_waiters; /* blocked waiting to get in sendrecv */
atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */
atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */
__u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */
@@ -768,6 +777,7 @@
*/
int nr_targets;
bool noblockcnt; /* use non-blocking connect() */
+ bool is_channel; /* if a session channel */
};
struct cifs_credits {
@@ -912,7 +922,7 @@
*
* Citation:
*
- * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
+ * https://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
*/
#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
@@ -954,6 +964,11 @@
struct sockaddr_storage sockaddr;
};
+struct cifs_chan {
+ struct TCP_Server_Info *server;
+ __u8 signkey[SMB3_SIGN_KEY_SIZE];
+};
+
/*
* Session structure. One of these for each uid session with a particular host
*/
@@ -984,12 +999,15 @@
bool sign; /* is signing required? */
bool need_reconnect:1; /* connection reset, uid now invalid */
bool domainAuto:1;
+ bool binding:1; /* are we binding the session? */
__u16 session_flags;
__u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
- __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE];
- __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE];
+ __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE];
+ __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE];
__u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE];
+ __u8 binding_preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE];
+
/*
* Network interfaces available on the server this session is
* connected to.
@@ -1003,8 +1021,46 @@
struct cifs_server_iface *iface_list;
size_t iface_count;
unsigned long iface_last_update; /* jiffies */
+
+#define CIFS_MAX_CHANNELS 16
+ struct cifs_chan chans[CIFS_MAX_CHANNELS];
+ struct cifs_chan *binding_chan;
+ size_t chan_count;
+ size_t chan_max;
+ atomic_t chan_seq; /* round robin state */
};
+/*
+ * When binding a new channel, we need to access the channel which isn't fully
+ * established yet.
+ */
+
+static inline
+struct cifs_chan *cifs_ses_binding_channel(struct cifs_ses *ses)
+{
+ if (ses->binding)
+ return ses->binding_chan;
+ else
+ return NULL;
+}
+
+/*
+ * Returns the server pointer of the session. When binding a new
+ * channel this returns the last channel which isn't fully established
+ * yet.
+ *
+ * This function should be use for negprot/sess.setup codepaths. For
+ * the other requests see cifs_pick_channel().
+ */
+static inline
+struct TCP_Server_Info *cifs_ses_server(struct cifs_ses *ses)
+{
+ if (ses->binding)
+ return ses->binding_chan->server;
+ else
+ return ses->server;
+}
+
static inline bool
cap_unix(struct cifs_ses *ses)
{
@@ -1014,7 +1070,7 @@
struct cached_fid {
bool is_valid:1; /* Do we have a useable root fid */
bool file_all_info_is_valid:1;
-
+ bool has_lease:1;
struct kref refcount;
struct cifs_fid *fid;
struct mutex fid_mutex;
@@ -1084,6 +1140,7 @@
bool retry:1;
bool nocase:1;
bool nohandlecache:1; /* if strange server resource prob can turn off */
+ bool nodelete:1;
bool seal:1; /* transport encryption for this mounted share */
bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
for this mount even if server would support */
@@ -1261,6 +1318,7 @@
struct tcon_link *tlink;
unsigned int f_flags;
bool invalidHandle:1; /* file closed via session abend */
+ bool swapfile:1;
bool oplock_break_cancelled:1;
unsigned int oplock_epoch; /* epoch from the lease break */
__u32 oplock_level; /* oplock/lease level from the lease break */
@@ -1280,6 +1338,7 @@
__u64 offset;
unsigned int length;
struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
};
struct cifs_aio_ctx {
@@ -1327,6 +1386,7 @@
struct cifs_readdata *rdata,
struct iov_iter *iter);
struct kvec iov[2];
+ struct TCP_Server_Info *server;
#ifdef CONFIG_CIFS_SMB_DIRECT
struct smbd_mr *mr;
#endif
@@ -1353,6 +1413,7 @@
pid_t pid;
unsigned int bytes;
int result;
+ struct TCP_Server_Info *server;
#ifdef CONFIG_CIFS_SMB_DIRECT
struct smbd_mr *mr;
#endif
@@ -1399,7 +1460,7 @@
struct list_head llist; /* locks helb by this inode */
/*
* NOTE: Some code paths call down_read(lock_sem) twice, so
- * we must always use use cifs_down_write() instead of down_write()
+ * we must always use cifs_down_write() instead of down_write()
* for this semaphore to avoid deadlocks.
*/
struct rw_semaphore lock_sem; /* protect the fields above */
@@ -1559,12 +1620,12 @@
struct cifs_fid fid;
struct cifs_tcon *tcon;
struct work_struct work;
+ __u64 mid;
+ __u16 cmd;
};
/* Make code in transport.c a little cleaner by moving
update of optional stats into function below */
-#ifdef CONFIG_CIFS_STATS2
-
static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
{
atomic_inc(&server->in_send);
@@ -1585,26 +1646,12 @@
atomic_dec(&server->num_waiters);
}
+#ifdef CONFIG_CIFS_STATS2
static inline void cifs_save_when_sent(struct mid_q_entry *mid)
{
mid->when_sent = jiffies;
}
#else
-static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
-{
-}
-static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
-{
-}
-
-static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
-{
-}
-
-static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
-{
-}
-
static inline void cifs_save_when_sent(struct mid_q_entry *mid)
{
}
@@ -1662,6 +1709,7 @@
struct timespec64 cf_atime;
struct timespec64 cf_mtime;
struct timespec64 cf_ctime;
+ u32 cf_cifstag;
};
static inline void free_dfs_info_param(struct dfs_info3_param *param)
@@ -1737,10 +1785,11 @@
#define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */
/* Type of request operation */
-#define CIFS_ECHO_OP 0x080 /* echo request */
-#define CIFS_OBREAK_OP 0x0100 /* oplock break request */
-#define CIFS_NEG_OP 0x0200 /* negotiate request */
-#define CIFS_OP_MASK 0x0380 /* mask request type */
+#define CIFS_ECHO_OP 0x080 /* echo request */
+#define CIFS_OBREAK_OP 0x0100 /* oplock break request */
+#define CIFS_NEG_OP 0x0200 /* negotiate request */
+#define CIFS_CP_CREATE_CLOSE_OP 0x0400 /* compound create+close request */
+#define CIFS_OP_MASK 0x0780 /* mask request type */
#define CIFS_HAS_CREDITS 0x0400 /* already has credits */
#define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */
@@ -1852,7 +1901,8 @@
/*
* This lock protects the cifs_tcp_ses_list, the list of smb sessions per
* tcp session, and the list of tcon's per smb session. It also protects
- * the reference counters for the server, smb session, and tcon. Finally,
+ * the reference counters for the server, smb session, and tcon. It also
+ * protects some fields in the TCP_Server_Info struct such as dstaddr. Finally,
* changes to the tcon->tidStatus should be done while holding this lock.
* generally the locks should be taken in order tcp_ses_lock before
* tcon->open_file_lock and that before file->file_info_lock since the
@@ -1900,6 +1950,8 @@
extern unsigned int global_secflags; /* if on, session setup sent
with more secure ntlmssp2 challenge/resp */
extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */
+extern bool enable_gcm_256; /* allow optional negotiate of strongest signing (aes-gcm-256) */
+extern bool require_gcm_256; /* require use of strongest signing (aes-gcm-256) */
extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
extern unsigned int CIFSMaxBufSize; /* max size not including hdr */
extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
@@ -1953,4 +2005,43 @@
#define ALT_SMB311_VERSION_STRING "3.11"
extern struct smb_version_operations smb311_operations;
extern struct smb_version_values smb311_values;
+
+static inline char *get_security_type_str(enum securityEnum sectype)
+{
+ switch (sectype) {
+ case RawNTLMSSP:
+ return "RawNTLMSSP";
+ case Kerberos:
+ return "Kerberos";
+ case NTLMv2:
+ return "NTLMv2";
+ case NTLM:
+ return "NTLM";
+ case LANMAN:
+ return "LANMAN";
+ default:
+ return "Unknown";
+ }
+}
+
+static inline bool is_smb1_server(struct TCP_Server_Info *server)
+{
+ return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0;
+}
+
+static inline bool is_tcon_dfs(struct cifs_tcon *tcon)
+{
+ /*
+ * For SMB1, see MS-CIFS 2.4.55 SMB_COM_TREE_CONNECT_ANDX (0x75) and MS-CIFS 3.3.4.4 DFS
+ * Subsystem Notifies That a Share Is a DFS Share.
+ *
+ * For SMB2+, see MS-SMB2 2.2.10 SMB2 TREE_CONNECT Response and MS-SMB2 3.3.4.14 Server
+ * Application Updates a Share.
+ */
+ if (!tcon || !tcon->ses || !tcon->ses->server)
+ return false;
+ return is_smb1_server(tcon->ses->server) ? tcon->Flags & SMB_SHARE_IS_IN_DFS :
+ tcon->share_flags & (SHI1005_FLAGS_DFS | SHI1005_FLAGS_DFS_ROOT);
+}
+
#endif /* _CIFS_GLOB_H */
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 79d842e..a843422 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -147,6 +147,11 @@
*/
#define SMB3_SIGN_KEY_SIZE (16)
+/*
+ * Size of the smb3 encryption/decryption keys
+ */
+#define SMB3_ENC_DEC_KEY_SIZE (32)
+
#define CIFS_CLIENT_CHALLENGE_SIZE (8)
#define CIFS_SERVER_CHALLENGE_SIZE (8)
#define CIFS_HMAC_MD5_HASH_SIZE (16)
@@ -1021,7 +1026,7 @@
__le16 ByteCount;
__u8 Pad; /* BB check for whether padded to DWORD
boundary and optimum performance here */
- char Data[0];
+ char Data[];
} __attribute__((packed)) WRITEX_REQ;
typedef struct smb_com_write_req {
@@ -1041,7 +1046,7 @@
__le16 ByteCount;
__u8 Pad; /* BB check for whether padded to DWORD
boundary and optimum performance here */
- char Data[0];
+ char Data[];
} __attribute__((packed)) WRITE_REQ;
typedef struct smb_com_write_rsp {
@@ -1306,7 +1311,7 @@
/* SetupCount words follow then */
__le16 ByteCount;
__u8 Pad[3];
- __u8 Parms[0];
+ __u8 Parms[];
} __attribute__((packed)) NTRANSACT_REQ;
typedef struct smb_com_ntransact_rsp {
@@ -1523,7 +1528,7 @@
__le32 NextEntryOffset;
__le32 Action;
__le32 FileNameLength;
- __u8 FileName[0];
+ __u8 FileName[];
} __attribute__((packed));
/* For IO_REPARSE_TAG_SYMLINK */
@@ -1536,7 +1541,7 @@
__le16 PrintNameOffset;
__le16 PrintNameLength;
__le32 Flags;
- char PathBuffer[0];
+ char PathBuffer[];
} __attribute__((packed));
/* Flag above */
@@ -1553,7 +1558,7 @@
__le16 ReparseDataLength;
__u16 Reserved;
__le64 InodeType; /* LNK, FIFO, CHR etc. */
- char PathBuffer[0];
+ char PathBuffer[];
} __attribute__((packed));
struct cifs_quota_data {
@@ -1691,6 +1696,7 @@
#define SMB_FIND_FILE_ID_FULL_DIR_INFO 0x105
#define SMB_FIND_FILE_ID_BOTH_DIR_INFO 0x106
#define SMB_FIND_FILE_UNIX 0x202
+#define SMB_FIND_FILE_POSIX_INFO 0x064
typedef struct smb_com_transaction2_qpi_req {
struct smb_hdr hdr; /* wct = 14+ */
@@ -1761,7 +1767,7 @@
__le32 overwrite; /* 1 = overwrite dest */
__u32 root_fid; /* zero */
__le32 target_name_len;
- char target_name[0]; /* Must be unicode */
+ char target_name[]; /* Must be unicode */
} __attribute__((packed));
struct smb_com_transaction2_sfi_req {
@@ -2450,7 +2456,7 @@
__le16 version;
__le16 access_entry_count; /* access ACL - count of entries */
__le16 default_entry_count; /* default ACL - count of entries */
- struct cifs_posix_ace ace_array[0];
+ struct cifs_posix_ace ace_array[];
/* followed by
struct cifs_posix_ace default_ace_arraay[] */
} __attribute__((packed)); /* level 0x204 */
@@ -2756,7 +2762,7 @@
/* BB do we need another field for flags? BB */
__u32 xattr_name_len;
__u32 xattr_value_len;
- char xattr_name[0];
+ char xattr_name[];
/* followed by xattr_value[xattr_value_len], no pad */
} __attribute__((packed)) FILE_XATTR_INFO; /* extended attribute info
level 0x205 */
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index f18da99..24c6f36 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -45,25 +45,25 @@
unsigned int /* length */);
extern unsigned int _get_xid(void);
extern void _free_xid(unsigned int);
-#define get_xid() \
-({ \
+#define get_xid() \
+({ \
unsigned int __xid = _get_xid(); \
- cifs_dbg(FYI, "CIFS VFS: in %s as Xid: %u with uid: %d\n", \
+ cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
__func__, __xid, \
from_kuid(&init_user_ns, current_fsuid())); \
- trace_smb3_enter(__xid, __func__); \
- __xid; \
+ trace_smb3_enter(__xid, __func__); \
+ __xid; \
})
-#define free_xid(curr_xid) \
-do { \
- _free_xid(curr_xid); \
- cifs_dbg(FYI, "CIFS VFS: leaving %s (xid = %u) rc = %d\n", \
- __func__, curr_xid, (int)rc); \
- if (rc) \
+#define free_xid(curr_xid) \
+do { \
+ _free_xid(curr_xid); \
+ cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
+ __func__, curr_xid, (int)rc); \
+ if (rc) \
trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
- else \
- trace_smb3_exit_done(curr_xid, __func__); \
+ else \
+ trace_smb3_exit_done(curr_xid, __func__); \
} while (0)
extern int init_cifs_idmap(void);
extern void exit_cifs_idmap(void);
@@ -89,16 +89,20 @@
extern void cifs_wake_up_task(struct mid_q_entry *mid);
extern int cifs_handle_standard(struct TCP_Server_Info *server,
struct mid_q_entry *mid);
+extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
extern int cifs_call_async(struct TCP_Server_Info *server,
struct smb_rqst *rqst,
mid_receive_t *receive, mid_callback_t *callback,
mid_handle_t *handle, void *cbdata, const int flags,
const struct cifs_credits *exist_credits);
+extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
+ struct TCP_Server_Info *server,
struct smb_rqst *rqst, int *resp_buf_type,
const int flags, struct kvec *resp_iov);
extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
+ struct TCP_Server_Info *server,
const int flags, const int num_rqst,
struct smb_rqst *rqst, int *resp_buf_type,
struct kvec *resp_iov);
@@ -109,6 +113,7 @@
extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
char *in_buf, int flags);
extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
+ struct TCP_Server_Info *,
struct smb_rqst *);
extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
struct smb_rqst *);
@@ -149,6 +154,7 @@
extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
extern int map_smb_to_linux_error(char *buf, bool logErr);
+extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
extern void header_assemble(struct smb_hdr *, char /* command */ ,
const struct cifs_tcon *, int /* length of
fixed section (word count) in two byte units */);
@@ -193,6 +199,8 @@
extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
FILE_ALL_INFO *data, struct super_block *sb,
int xid, const struct cifs_fid *fid);
+extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
+ struct super_block *sb, unsigned int xid);
extern int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *search_path,
struct super_block *sb, unsigned int xid);
@@ -201,6 +209,8 @@
extern int cifs_rename_pending_delete(const char *full_path,
struct dentry *dentry,
const unsigned int xid);
+extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
+ struct cifs_fattr *fattr, uint sidtype);
extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
struct cifs_fattr *fattr, struct inode *inode,
bool get_mode_from_special_sid,
@@ -213,6 +223,9 @@
const struct cifs_fid *, u32 *);
extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
const char *, int);
+extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
+extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
+extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
@@ -243,6 +256,7 @@
struct tcon_link *tlink,
struct cifs_pending_open *open);
extern void cifs_del_pending_open(struct cifs_pending_open *open);
+extern struct TCP_Server_Info *cifs_get_tcp_session(struct smb_vol *vol);
extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
int from_reconnect);
extern void cifs_put_tcon(struct cifs_tcon *tcon);
@@ -260,6 +274,9 @@
extern void cifs_free_llist(struct list_head *llist);
extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
+extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
+ const struct nls_table *nlsc);
+
extern int cifs_negotiate_protocol(const unsigned int xid,
struct cifs_ses *ses);
extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
@@ -333,7 +350,7 @@
extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
const char *fileName, const FILE_BASIC_INFO *data,
const struct nls_table *nls_codepage,
- int remap_special_chars);
+ struct cifs_sb_info *cifs_sb);
extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
const FILE_BASIC_INFO *data, __u16 fid,
__u32 pid_of_opener);
@@ -585,9 +602,24 @@
extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
unsigned int *len, unsigned int *offset);
+struct cifs_chan *
+cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
+int cifs_try_adding_channels(struct cifs_ses *ses);
+int cifs_ses_add_channel(struct cifs_ses *ses,
+ struct cifs_server_iface *iface);
+bool is_server_using_iface(struct TCP_Server_Info *server,
+ struct cifs_server_iface *iface);
+bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
void extract_unc_hostname(const char *unc, const char **h, size_t *len);
int copy_path_name(char *dst, const char *src);
+int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
+ int resp_buftype,
+ struct cifs_search_info *srch_inf);
+
+struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
+void cifs_put_tcp_super(struct super_block *sb);
+int update_super_prepath(struct cifs_tcon *tcon, char *prefix);
#ifdef CONFIG_CIFS_DFS_UPCALL
static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
@@ -598,6 +630,18 @@
return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
referral, NULL);
}
+
+int match_target_ip(struct TCP_Server_Info *server,
+ const char *share, size_t share_len,
+ bool *result);
#endif
+static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
+{
+ if (cifs_sb && (backup_cred(cifs_sb)))
+ return options | CREATE_OPEN_BACKUP_INTENT;
+ else
+ return options;
+}
+
#endif /* _CIFSPROTO_H */
diff --git a/fs/cifs/cifsroot.c b/fs/cifs/cifsroot.c
index 37edbfb..9e91a5a 100644
--- a/fs/cifs/cifsroot.c
+++ b/fs/cifs/cifsroot.c
@@ -56,7 +56,7 @@
/* len is strlen(unc) + '\0' */
len = s - line + 1;
if (len > sizeof(root_dev)) {
- printk(KERN_ERR "Root-CIFS: UNC path too long\n");
+ pr_err("Root-CIFS: UNC path too long\n");
return 1;
}
strlcpy(root_dev, line, len);
@@ -66,7 +66,7 @@
sizeof(root_opts), "%s,%s",
DEFAULT_MNT_OPTS, s + 1);
if (n >= sizeof(root_opts)) {
- printk(KERN_ERR "Root-CIFS: mount options string too long\n");
+ pr_err("Root-CIFS: mount options string too long\n");
root_opts[sizeof(root_opts)-1] = '\0';
return 1;
}
@@ -83,7 +83,7 @@
int __init cifs_root_data(char **dev, char **opts)
{
if (!root_dev[0] || root_server_addr == htonl(INADDR_NONE)) {
- printk(KERN_ERR "Root-CIFS: no SMB server address\n");
+ pr_err("Root-CIFS: no SMB server address\n");
return -1;
}
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 4b8632e..0496934 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -42,6 +42,7 @@
#include "cifsproto.h"
#include "cifs_unicode.h"
#include "cifs_debug.h"
+#include "smb2proto.h"
#include "fscache.h"
#include "smbdirect.h"
#ifdef CONFIG_CIFS_DFS_UPCALL
@@ -112,6 +113,8 @@
mutex_lock(&tcon->crfid.fid_mutex);
tcon->crfid.is_valid = false;
+ /* cached handle is not valid, so SMB2_CLOSE won't be sent below */
+ close_shroot_lease_locked(&tcon->crfid);
memset(tcon->crfid.fid, 0, sizeof(struct cifs_fid));
mutex_unlock(&tcon->crfid.fid_mutex);
@@ -121,86 +124,6 @@
*/
}
-#ifdef CONFIG_CIFS_DFS_UPCALL
-static int __cifs_reconnect_tcon(const struct nls_table *nlsc,
- struct cifs_tcon *tcon)
-{
- int rc;
- struct dfs_cache_tgt_list tl;
- struct dfs_cache_tgt_iterator *it = NULL;
- char *tree;
- const char *tcp_host;
- size_t tcp_host_len;
- const char *dfs_host;
- size_t dfs_host_len;
-
- tree = kzalloc(MAX_TREE_SIZE, GFP_KERNEL);
- if (!tree)
- return -ENOMEM;
-
- if (tcon->ipc) {
- scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$",
- tcon->ses->server->hostname);
- rc = CIFSTCon(0, tcon->ses, tree, tcon, nlsc);
- goto out;
- }
-
- if (!tcon->dfs_path) {
- rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon, nlsc);
- goto out;
- }
-
- rc = dfs_cache_noreq_find(tcon->dfs_path + 1, NULL, &tl);
- if (rc)
- goto out;
-
- extract_unc_hostname(tcon->ses->server->hostname, &tcp_host,
- &tcp_host_len);
-
- for (it = dfs_cache_get_tgt_iterator(&tl); it;
- it = dfs_cache_get_next_tgt(&tl, it)) {
- const char *tgt = dfs_cache_get_tgt_name(it);
-
- extract_unc_hostname(tgt, &dfs_host, &dfs_host_len);
-
- if (dfs_host_len != tcp_host_len
- || strncasecmp(dfs_host, tcp_host, dfs_host_len) != 0) {
- cifs_dbg(FYI, "%s: skipping %.*s, doesn't match %.*s",
- __func__,
- (int)dfs_host_len, dfs_host,
- (int)tcp_host_len, tcp_host);
- continue;
- }
-
- scnprintf(tree, MAX_TREE_SIZE, "\\%s", tgt);
-
- rc = CIFSTCon(0, tcon->ses, tree, tcon, nlsc);
- if (!rc)
- break;
- if (rc == -EREMOTE)
- break;
- }
-
- if (!rc) {
- if (it)
- rc = dfs_cache_noreq_update_tgthint(tcon->dfs_path + 1,
- it);
- else
- rc = -ENOENT;
- }
- dfs_cache_free_tgts(&tl);
-out:
- kfree(tree);
- return rc;
-}
-#else
-static inline int __cifs_reconnect_tcon(const struct nls_table *nlsc,
- struct cifs_tcon *tcon)
-{
- return CIFSTCon(0, tcon->ses, tcon->treeName, tcon, nlsc);
-}
-#endif
-
/* reconnect the socket, tcon, and smb session if needed */
static int
cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command)
@@ -248,8 +171,8 @@
(server->tcpStatus != CifsNeedReconnect),
10 * HZ);
if (rc < 0) {
- cifs_dbg(FYI, "%s: aborting reconnect due to a received"
- " signal by the process\n", __func__);
+ cifs_dbg(FYI, "%s: aborting reconnect due to a received signal by the process\n",
+ __func__);
return -ERESTARTSYS;
}
@@ -257,7 +180,7 @@
if (server->tcpStatus != CifsNeedReconnect)
break;
- if (--retries)
+ if (retries && --retries)
continue;
/*
@@ -305,19 +228,19 @@
}
cifs_mark_open_files_invalid(tcon);
- rc = __cifs_reconnect_tcon(nls_codepage, tcon);
+ rc = cifs_tree_connect(0, tcon, nls_codepage);
mutex_unlock(&ses->session_mutex);
cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc);
if (rc) {
- printk_once(KERN_WARNING "reconnect tcon failed rc = %d\n", rc);
+ pr_warn_once("reconnect tcon failed rc = %d\n", rc);
goto out;
}
atomic_inc(&tconInfoReconnectCount);
/* tell server Unix caps we support */
- if (ses->capabilities & CAP_UNIX)
+ if (cap_unix(ses))
reset_cifs_unix_caps(0, tcon, NULL, NULL);
/*
@@ -543,7 +466,7 @@
/* If server requires signing, does client allow it? */
if (srv_sign_required) {
if (!mnt_sign_enabled) {
- cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!");
+ cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!\n");
return -ENOTSUPP;
}
server->sign = true;
@@ -552,14 +475,14 @@
/* If client requires signing, does server allow it? */
if (mnt_sign_required) {
if (!srv_sign_enabled) {
- cifs_dbg(VFS, "Server does not support signing!");
+ cifs_dbg(VFS, "Server does not support signing!\n");
return -ENOTSUPP;
}
server->sign = true;
}
if (cifs_rdma_enabled(server) && server->sign)
- cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled");
+ cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled\n");
return 0;
}
@@ -580,6 +503,8 @@
cifs_max_pending);
set_credits(server, server->maxReq);
server->maxBuf = le16_to_cpu(rsp->MaxBufSize);
+ /* set up max_read for readpages check */
+ server->max_read = server->maxBuf;
/* even though we do not use raw we might as well set this
accurately, in case we ever find a need for it */
if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) {
@@ -656,7 +581,7 @@
if (global_secflags &
(CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP))
return true;
- /* Fallthrough */
+ fallthrough;
default:
return false;
}
@@ -687,7 +612,7 @@
pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS);
if (should_set_ext_sec_flag(ses->sectype)) {
- cifs_dbg(FYI, "Requesting extended security.");
+ cifs_dbg(FYI, "Requesting extended security\n");
pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
}
@@ -741,6 +666,8 @@
set_credits(server, server->maxReq);
/* probably no need to store and check maxvcs */
server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize);
+ /* set up max_read for readpages check */
+ server->max_read = server->maxBuf;
server->max_rw = le32_to_cpu(pSMBr->MaxRawSize);
cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf);
server->capabilities = le32_to_cpu(pSMBr->Capabilities);
@@ -1588,7 +1515,6 @@
if (server->ops->is_session_expired &&
server->ops->is_session_expired(buf)) {
cifs_reconnect(server);
- wake_up(&server->response_q);
return -1;
}
@@ -2358,7 +2284,7 @@
CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
unsigned int *nbytes, struct kvec *iov, int n_vec)
{
- int rc = -EACCES;
+ int rc;
WRITE_REQ *pSMB = NULL;
int wct;
int smb_hdr_len;
@@ -3851,7 +3777,7 @@
struct file_chattr_info *pfinfo;
/* BB Do we need a cast or hash here ? */
if (count != 16) {
- cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n");
+ cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n");
rc = -EIO;
goto GetExtAttrOut;
}
@@ -4227,7 +4153,7 @@
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in QFileInfo = %d", rc);
+ cifs_dbg(FYI, "Send error in QFileInfo = %d\n", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
@@ -4394,7 +4320,7 @@
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc);
+ cifs_dbg(FYI, "Send error in UnixQFileInfo = %d\n", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
@@ -4476,7 +4402,7 @@
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc);
+ cifs_dbg(FYI, "Send error in UnixQPathInfo = %d\n", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
@@ -4617,7 +4543,7 @@
psrch_inf->unicode = false;
psrch_inf->ntwrk_buf_start = (char *)pSMBr;
- psrch_inf->smallBuf = 0;
+ psrch_inf->smallBuf = false;
psrch_inf->srch_entries_start =
(char *) &pSMBr->hdr.Protocol +
le16_to_cpu(pSMBr->t2.DataOffset);
@@ -4751,7 +4677,7 @@
cifs_buf_release(psrch_inf->ntwrk_buf_start);
psrch_inf->srch_entries_start = response_data;
psrch_inf->ntwrk_buf_start = (char *)pSMB;
- psrch_inf->smallBuf = 0;
+ psrch_inf->smallBuf = false;
if (parms->EndofSearch)
psrch_inf->endOfSearch = true;
else
@@ -4896,7 +4822,7 @@
struct file_internal_info *pfinfo;
/* BB Do we need a cast or hash here ? */
if (count < 8) {
- cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n");
+ cifs_dbg(FYI, "Invalid size ret in QryIntrnlInf\n");
rc = -EIO;
goto GetInodeNumOut;
}
@@ -5877,10 +5803,42 @@
return rc;
}
+static int
+CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon *tcon,
+ const char *fileName, const FILE_BASIC_INFO *data,
+ const struct nls_table *nls_codepage,
+ struct cifs_sb_info *cifs_sb)
+{
+ int oplock = 0;
+ struct cifs_open_parms oparms;
+ struct cifs_fid fid;
+ int rc;
+
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = GENERIC_WRITE;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
+ oparms.disposition = FILE_OPEN;
+ oparms.path = fileName;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, NULL);
+ if (rc)
+ goto out;
+
+ rc = CIFSSMBSetFileInfo(xid, tcon, data, fid.netfid, current->tgid);
+ CIFSSMBClose(xid, tcon, fid.netfid);
+out:
+
+ return rc;
+}
+
int
CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
const char *fileName, const FILE_BASIC_INFO *data,
- const struct nls_table *nls_codepage, int remap)
+ const struct nls_table *nls_codepage,
+ struct cifs_sb_info *cifs_sb)
{
TRANSACTION2_SPI_REQ *pSMB = NULL;
TRANSACTION2_SPI_RSP *pSMBr = NULL;
@@ -5889,6 +5847,7 @@
int bytes_returned = 0;
char *data_offset;
__u16 params, param_offset, offset, byte_count, count;
+ int remap = cifs_remap(cifs_sb);
cifs_dbg(FYI, "In SetTimes\n");
@@ -5951,6 +5910,10 @@
if (rc == -EAGAIN)
goto SetTimesRetry;
+ if (rc == -EOPNOTSUPP)
+ return CIFSSMBSetPathInfoFB(xid, tcon, fileName, data,
+ nls_codepage, cifs_sb);
+
return rc;
}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index da0720f..7f5d173 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -21,6 +21,7 @@
#include <linux/fs.h>
#include <linux/net.h>
#include <linux/string.h>
+#include <linux/sched/mm.h>
#include <linux/sched/signal.h>
#include <linux/list.h>
#include <linux/wait.h>
@@ -57,10 +58,10 @@
#include "smb2proto.h"
#include "smbdirect.h"
#include "dns_resolve.h"
-#include "cifsfs.h"
#ifdef CONFIG_CIFS_DFS_UPCALL
#include "dfs_cache.h"
#endif
+#include "fs_context.h"
extern mempool_t *cifs_req_poolp;
extern bool disable_legacy_dialects;
@@ -69,13 +70,16 @@
#define TLINK_ERROR_EXPIRE (1 * HZ)
#define TLINK_IDLE_EXPIRE (600 * HZ)
+/* Drop the connection to not overload the server */
+#define NUM_STATUS_IO_TIMEOUT 5
+
enum {
/* Mount options that take no arguments */
Opt_user_xattr, Opt_nouser_xattr,
Opt_forceuid, Opt_noforceuid,
Opt_forcegid, Opt_noforcegid,
Opt_noblocksend, Opt_noautotune, Opt_nolease,
- Opt_hard, Opt_soft, Opt_perm, Opt_noperm,
+ Opt_hard, Opt_soft, Opt_perm, Opt_noperm, Opt_nodelete,
Opt_mapposix, Opt_nomapposix,
Opt_mapchars, Opt_nomapchars, Opt_sfu,
Opt_nosfu, Opt_nodfs, Opt_posixpaths,
@@ -97,6 +101,7 @@
Opt_persistent, Opt_nopersistent,
Opt_resilient, Opt_noresilient,
Opt_domainauto, Opt_rdma, Opt_modesid, Opt_rootfs,
+ Opt_multichannel, Opt_nomultichannel,
Opt_compress,
/* Mount options which take numeric value */
@@ -106,7 +111,7 @@
Opt_min_enc_offload,
Opt_blocksize, Opt_rsize, Opt_wsize, Opt_actimeo,
Opt_echo_interval, Opt_max_credits, Opt_handletimeout,
- Opt_snapshot,
+ Opt_snapshot, Opt_max_channels,
/* Mount options which take string value */
Opt_user, Opt_pass, Opt_ip,
@@ -140,6 +145,7 @@
{ Opt_soft, "soft" },
{ Opt_perm, "perm" },
{ Opt_noperm, "noperm" },
+ { Opt_nodelete, "nodelete" },
{ Opt_mapchars, "mapchars" }, /* SFU style */
{ Opt_nomapchars, "nomapchars" },
{ Opt_mapposix, "mapposix" }, /* SFM style */
@@ -199,6 +205,8 @@
{ Opt_noresilient, "noresilienthandles"},
{ Opt_domainauto, "domainauto"},
{ Opt_rdma, "rdma"},
+ { Opt_multichannel, "multichannel" },
+ { Opt_nomultichannel, "nomultichannel" },
{ Opt_backupuid, "backupuid=%s" },
{ Opt_backupgid, "backupgid=%s" },
@@ -218,6 +226,7 @@
{ Opt_echo_interval, "echo_interval=%s" },
{ Opt_max_credits, "max_credits=%s" },
{ Opt_snapshot, "snapshot=%s" },
+ { Opt_max_channels, "max_channels=%s" },
{ Opt_compress, "compress=%s" },
{ Opt_blank_user, "user=" },
@@ -271,66 +280,6 @@
{ Opt_err, NULL }
};
-enum {
- Opt_sec_krb5, Opt_sec_krb5i, Opt_sec_krb5p,
- Opt_sec_ntlmsspi, Opt_sec_ntlmssp,
- Opt_ntlm, Opt_sec_ntlmi, Opt_sec_ntlmv2,
- Opt_sec_ntlmv2i, Opt_sec_lanman,
- Opt_sec_none,
-
- Opt_sec_err
-};
-
-static const match_table_t cifs_secflavor_tokens = {
- { Opt_sec_krb5, "krb5" },
- { Opt_sec_krb5i, "krb5i" },
- { Opt_sec_krb5p, "krb5p" },
- { Opt_sec_ntlmsspi, "ntlmsspi" },
- { Opt_sec_ntlmssp, "ntlmssp" },
- { Opt_ntlm, "ntlm" },
- { Opt_sec_ntlmi, "ntlmi" },
- { Opt_sec_ntlmv2, "nontlm" },
- { Opt_sec_ntlmv2, "ntlmv2" },
- { Opt_sec_ntlmv2i, "ntlmv2i" },
- { Opt_sec_lanman, "lanman" },
- { Opt_sec_none, "none" },
-
- { Opt_sec_err, NULL }
-};
-
-/* cache flavors */
-enum {
- Opt_cache_loose,
- Opt_cache_strict,
- Opt_cache_none,
- Opt_cache_ro,
- Opt_cache_rw,
- Opt_cache_err
-};
-
-static const match_table_t cifs_cacheflavor_tokens = {
- { Opt_cache_loose, "loose" },
- { Opt_cache_strict, "strict" },
- { Opt_cache_none, "none" },
- { Opt_cache_ro, "ro" },
- { Opt_cache_rw, "singleclient" },
- { Opt_cache_err, NULL }
-};
-
-static const match_table_t cifs_smb_version_tokens = {
- { Smb_1, SMB1_VERSION_STRING },
- { Smb_20, SMB20_VERSION_STRING},
- { Smb_21, SMB21_VERSION_STRING },
- { Smb_30, SMB30_VERSION_STRING },
- { Smb_302, SMB302_VERSION_STRING },
- { Smb_302, ALT_SMB302_VERSION_STRING },
- { Smb_311, SMB311_VERSION_STRING },
- { Smb_311, ALT_SMB311_VERSION_STRING },
- { Smb_3any, SMB3ANY_VERSION_STRING },
- { Smb_default, SMBDEFAULT_VERSION_STRING },
- { Smb_version_err, NULL }
-};
-
static int ip_connect(struct TCP_Server_Info *server);
static int generic_ip_connect(struct TCP_Server_Info *server);
static void tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink);
@@ -387,63 +336,15 @@
#endif
#ifdef CONFIG_CIFS_DFS_UPCALL
-struct super_cb_data {
- struct TCP_Server_Info *server;
- struct super_block *sb;
-};
-
/* These functions must be called with server->srv_mutex held */
-
-static void super_cb(struct super_block *sb, void *arg)
-{
- struct super_cb_data *d = arg;
- struct cifs_sb_info *cifs_sb;
- struct cifs_tcon *tcon;
-
- if (d->sb)
- return;
-
- cifs_sb = CIFS_SB(sb);
- tcon = cifs_sb_master_tcon(cifs_sb);
- if (tcon->ses->server == d->server)
- d->sb = sb;
-}
-
-static struct super_block *get_tcp_super(struct TCP_Server_Info *server)
-{
- struct super_cb_data d = {
- .server = server,
- .sb = NULL,
- };
-
- iterate_supers_type(&cifs_fs_type, super_cb, &d);
-
- if (unlikely(!d.sb))
- return ERR_PTR(-ENOENT);
- /*
- * Grab an active reference in order to prevent automounts (DFS links)
- * of expiring and then freeing up our cifs superblock pointer while
- * we're doing failover.
- */
- cifs_sb_active(d.sb);
- return d.sb;
-}
-
-static inline void put_tcp_super(struct super_block *sb)
-{
- if (!IS_ERR_OR_NULL(sb))
- cifs_sb_deactive(sb);
-}
-
-static void reconn_inval_dfs_target(struct TCP_Server_Info *server,
- struct cifs_sb_info *cifs_sb,
- struct dfs_cache_tgt_list *tgt_list,
- struct dfs_cache_tgt_iterator **tgt_it)
+static void reconn_set_next_dfs_target(struct TCP_Server_Info *server,
+ struct cifs_sb_info *cifs_sb,
+ struct dfs_cache_tgt_list *tgt_list,
+ struct dfs_cache_tgt_iterator **tgt_it)
{
const char *name;
- if (!cifs_sb || !cifs_sb->origin_fullpath || !tgt_list ||
- !server->nr_targets)
+ if (!cifs_sb || !cifs_sb->origin_fullpath)
return;
if (!*tgt_it) {
@@ -469,8 +370,7 @@
}
static inline int reconn_setup_dfs_targets(struct cifs_sb_info *cifs_sb,
- struct dfs_cache_tgt_list *tl,
- struct dfs_cache_tgt_iterator **it)
+ struct dfs_cache_tgt_list *tl)
{
if (!cifs_sb->origin_fullpath)
return -EOPNOTSUPP;
@@ -506,7 +406,7 @@
server->nr_targets = 1;
#ifdef CONFIG_CIFS_DFS_UPCALL
spin_unlock(&GlobalMid_Lock);
- sb = get_tcp_super(server);
+ sb = cifs_get_tcp_super(server);
if (IS_ERR(sb)) {
rc = PTR_ERR(sb);
cifs_dbg(FYI, "%s: will not do DFS failover: rc = %d\n",
@@ -514,11 +414,13 @@
sb = NULL;
} else {
cifs_sb = CIFS_SB(sb);
-
- rc = reconn_setup_dfs_targets(cifs_sb, &tgt_list, &tgt_it);
- if (rc && (rc != -EOPNOTSUPP)) {
- cifs_server_dbg(VFS, "%s: no target servers for DFS failover\n",
- __func__);
+ rc = reconn_setup_dfs_targets(cifs_sb, &tgt_list);
+ if (rc) {
+ cifs_sb = NULL;
+ if (rc != -EOPNOTSUPP) {
+ cifs_server_dbg(VFS, "%s: no target servers for DFS failover\n",
+ __func__);
+ }
} else {
server->nr_targets = dfs_cache_get_nr_tgts(&tgt_list);
}
@@ -533,8 +435,9 @@
spin_unlock(&GlobalMid_Lock);
#ifdef CONFIG_CIFS_DFS_UPCALL
dfs_cache_free_tgts(&tgt_list);
- put_tcp_super(sb);
+ cifs_put_tcp_super(sb);
#endif
+ wake_up(&server->response_q);
return rc;
} else
server->tcpStatus = CifsNeedReconnect;
@@ -620,7 +523,7 @@
* feature is disabled, then we will retry last server we
* connected to before.
*/
- reconn_inval_dfs_target(server, cifs_sb, &tgt_list, &tgt_it);
+ reconn_set_next_dfs_target(server, cifs_sb, &tgt_list, &tgt_it);
#endif
rc = reconn_set_ipaddr(server);
if (rc) {
@@ -664,11 +567,12 @@
}
- put_tcp_super(sb);
+ cifs_put_tcp_super(sb);
#endif
if (server->tcpStatus == CifsNeedNegotiate)
mod_delayed_work(cifsiod_wq, &server->echo, 0);
+ wake_up(&server->response_q);
return rc;
}
@@ -759,11 +663,11 @@
*/
if ((server->tcpStatus == CifsGood ||
server->tcpStatus == CifsNeedNegotiate) &&
+ (!server->ops->can_echo || server->ops->can_echo(server)) &&
time_after(jiffies, server->lstrp + 3 * server->echo_interval)) {
cifs_server_dbg(VFS, "has not responded in %lu seconds. Reconnecting...\n",
(3 * server->echo_interval) / HZ);
cifs_reconnect(server);
- wake_up(&server->response_q);
return true;
}
@@ -896,7 +800,6 @@
*/
cifs_set_port((struct sockaddr *)&server->dstaddr, CIFS_PORT);
cifs_reconnect(server);
- wake_up(&server->response_q);
break;
default:
cifs_server_dbg(VFS, "RFC 1002 unknown response type 0x%x\n", type);
@@ -922,8 +825,7 @@
* function has finished processing it is a bug.
*/
if (mid->mid_flags & MID_DELETED)
- printk_once(KERN_WARNING
- "trying to dequeue a deleted mid\n");
+ pr_warn_once("trying to dequeue a deleted mid\n");
else {
list_del_init(&mid->qhead);
mid->mid_flags |= MID_DELETED;
@@ -1070,7 +972,6 @@
server->vals->header_preamble_size) {
cifs_server_dbg(VFS, "SMB response too long (%u bytes)\n", pdu_length);
cifs_reconnect(server);
- wake_up(&server->response_q);
return -ECONNABORTED;
}
@@ -1118,7 +1019,6 @@
if (server->ops->is_session_expired &&
server->ops->is_session_expired(buf)) {
cifs_reconnect(server);
- wake_up(&server->response_q);
return -1;
}
@@ -1164,8 +1064,9 @@
struct task_struct *task_to_wake = NULL;
struct mid_q_entry *mids[MAX_COMPOUND];
char *bufs[MAX_COMPOUND];
+ unsigned int noreclaim_flag, num_io_timeout = 0;
- current->flags |= PF_MEMALLOC;
+ noreclaim_flag = memalloc_noreclaim_save();
cifs_dbg(FYI, "Demultiplex PID: %d\n", task_pid_nr(current));
length = atomic_inc_return(&tcpSesAllocCount);
@@ -1212,7 +1113,6 @@
cifs_server_dbg(VFS, "SMB response too short (%u bytes)\n",
server->pdu_size);
cifs_reconnect(server);
- wake_up(&server->response_q);
continue;
}
@@ -1260,6 +1160,16 @@
continue;
}
+ if (server->ops->is_status_io_timeout &&
+ server->ops->is_status_io_timeout(buf)) {
+ num_io_timeout++;
+ if (num_io_timeout > NUM_STATUS_IO_TIMEOUT) {
+ cifs_reconnect(server);
+ num_io_timeout = 0;
+ continue;
+ }
+ }
+
server->lstrp = jiffies;
for (i = 0; i < num_mids; i++) {
@@ -1276,9 +1186,8 @@
smb2_add_credits_from_hdr(bufs[i], server);
cifs_dbg(FYI, "Received oplock break\n");
} else {
- cifs_server_dbg(VFS, "No task to wake, unknown frame "
- "received! NumMids %d\n",
- atomic_read(&midCount));
+ cifs_server_dbg(VFS, "No task to wake, unknown frame received! NumMids %d\n",
+ atomic_read(&midCount));
cifs_dump_mem("Received Data is: ", bufs[i],
HEADER_SIZE(server));
smb2_add_credits_from_hdr(bufs[i], server);
@@ -1320,6 +1229,7 @@
set_current_state(TASK_RUNNING);
}
+ memalloc_noreclaim_restore(noreclaim_flag);
module_put_and_exit(0);
}
@@ -1406,176 +1316,6 @@
return 0;
}
-static int cifs_parse_security_flavors(char *value,
- struct smb_vol *vol)
-{
-
- substring_t args[MAX_OPT_ARGS];
-
- /*
- * With mount options, the last one should win. Reset any existing
- * settings back to default.
- */
- vol->sectype = Unspecified;
- vol->sign = false;
-
- switch (match_token(value, cifs_secflavor_tokens, args)) {
- case Opt_sec_krb5p:
- cifs_dbg(VFS, "sec=krb5p is not supported!\n");
- return 1;
- case Opt_sec_krb5i:
- vol->sign = true;
- /* Fallthrough */
- case Opt_sec_krb5:
- vol->sectype = Kerberos;
- break;
- case Opt_sec_ntlmsspi:
- vol->sign = true;
- /* Fallthrough */
- case Opt_sec_ntlmssp:
- vol->sectype = RawNTLMSSP;
- break;
- case Opt_sec_ntlmi:
- vol->sign = true;
- /* Fallthrough */
- case Opt_ntlm:
- vol->sectype = NTLM;
- break;
- case Opt_sec_ntlmv2i:
- vol->sign = true;
- /* Fallthrough */
- case Opt_sec_ntlmv2:
- vol->sectype = NTLMv2;
- break;
-#ifdef CONFIG_CIFS_WEAK_PW_HASH
- case Opt_sec_lanman:
- vol->sectype = LANMAN;
- break;
-#endif
- case Opt_sec_none:
- vol->nullauth = 1;
- break;
- default:
- cifs_dbg(VFS, "bad security option: %s\n", value);
- return 1;
- }
-
- return 0;
-}
-
-static int
-cifs_parse_cache_flavor(char *value, struct smb_vol *vol)
-{
- substring_t args[MAX_OPT_ARGS];
-
- switch (match_token(value, cifs_cacheflavor_tokens, args)) {
- case Opt_cache_loose:
- vol->direct_io = false;
- vol->strict_io = false;
- vol->cache_ro = false;
- vol->cache_rw = false;
- break;
- case Opt_cache_strict:
- vol->direct_io = false;
- vol->strict_io = true;
- vol->cache_ro = false;
- vol->cache_rw = false;
- break;
- case Opt_cache_none:
- vol->direct_io = true;
- vol->strict_io = false;
- vol->cache_ro = false;
- vol->cache_rw = false;
- break;
- case Opt_cache_ro:
- vol->direct_io = false;
- vol->strict_io = false;
- vol->cache_ro = true;
- vol->cache_rw = false;
- break;
- case Opt_cache_rw:
- vol->direct_io = false;
- vol->strict_io = false;
- vol->cache_ro = false;
- vol->cache_rw = true;
- break;
- default:
- cifs_dbg(VFS, "bad cache= option: %s\n", value);
- return 1;
- }
- return 0;
-}
-
-static int
-cifs_parse_smb_version(char *value, struct smb_vol *vol, bool is_smb3)
-{
- substring_t args[MAX_OPT_ARGS];
-
- switch (match_token(value, cifs_smb_version_tokens, args)) {
-#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
- case Smb_1:
- if (disable_legacy_dialects) {
- cifs_dbg(VFS, "mount with legacy dialect disabled\n");
- return 1;
- }
- if (is_smb3) {
- cifs_dbg(VFS, "vers=1.0 (cifs) not permitted when mounting with smb3\n");
- return 1;
- }
- vol->ops = &smb1_operations;
- vol->vals = &smb1_values;
- break;
- case Smb_20:
- if (disable_legacy_dialects) {
- cifs_dbg(VFS, "mount with legacy dialect disabled\n");
- return 1;
- }
- if (is_smb3) {
- cifs_dbg(VFS, "vers=2.0 not permitted when mounting with smb3\n");
- return 1;
- }
- vol->ops = &smb20_operations;
- vol->vals = &smb20_values;
- break;
-#else
- case Smb_1:
- cifs_dbg(VFS, "vers=1.0 (cifs) mount not permitted when legacy dialects disabled\n");
- return 1;
- case Smb_20:
- cifs_dbg(VFS, "vers=2.0 mount not permitted when legacy dialects disabled\n");
- return 1;
-#endif /* CIFS_ALLOW_INSECURE_LEGACY */
- case Smb_21:
- vol->ops = &smb21_operations;
- vol->vals = &smb21_values;
- break;
- case Smb_30:
- vol->ops = &smb30_operations;
- vol->vals = &smb30_values;
- break;
- case Smb_302:
- vol->ops = &smb30_operations; /* currently identical with 3.0 */
- vol->vals = &smb302_values;
- break;
- case Smb_311:
- vol->ops = &smb311_operations;
- vol->vals = &smb311_values;
- break;
- case Smb_3any:
- vol->ops = &smb30_operations; /* currently identical with 3.0 */
- vol->vals = &smb3any_values;
- break;
- case Smb_default:
- vol->ops = &smb30_operations; /* currently identical with 3.0 */
- vol->vals = &smbdefault_values;
- break;
- default:
- cifs_dbg(VFS, "Unknown vers= option specified: %s\n", value);
- return 1;
- }
- return 0;
-}
-
/*
* Parse a devname into substrings and populate the vol->UNC and vol->prepath
* fields with the result. Returns 0 on success and an error otherwise.
@@ -1588,7 +1328,7 @@
size_t len;
if (unlikely(!devname || !*devname)) {
- cifs_dbg(VFS, "Device name not specified.\n");
+ cifs_dbg(VFS, "Device name not specified\n");
return -EINVAL;
}
@@ -1709,6 +1449,10 @@
vol->echo_interval = SMB_ECHO_INTERVAL_DEFAULT;
+ /* default to no multichannel (single server connection) */
+ vol->multichannel = false;
+ vol->max_channels = 1;
+
if (!mountdata)
goto cifs_parse_mount_err;
@@ -1734,13 +1478,13 @@
case 0:
break;
case -ENOMEM:
- cifs_dbg(VFS, "Unable to allocate memory for devname.\n");
+ cifs_dbg(VFS, "Unable to allocate memory for devname\n");
goto cifs_parse_mount_err;
case -EINVAL:
- cifs_dbg(VFS, "Malformed UNC in devname.\n");
+ cifs_dbg(VFS, "Malformed UNC in devname\n");
goto cifs_parse_mount_err;
default:
- cifs_dbg(VFS, "Unknown error parsing devname.\n");
+ cifs_dbg(VFS, "Unknown error parsing devname\n");
goto cifs_parse_mount_err;
}
@@ -1800,6 +1544,9 @@
case Opt_noperm:
vol->noperm = 1;
break;
+ case Opt_nodelete:
+ vol->nodelete = 1;
+ break;
case Opt_mapchars:
vol->sfu_remap = true;
vol->remap = false; /* disable SFM mapping */
@@ -1948,7 +1695,7 @@
vol->seal = 1;
break;
case Opt_noac:
- pr_warn("CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n");
+ pr_warn("Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n");
break;
case Opt_fsc:
#ifndef CONFIG_CIFS_FSCACHE
@@ -2002,6 +1749,16 @@
case Opt_rdma:
vol->rdma = true;
break;
+ case Opt_multichannel:
+ vol->multichannel = true;
+ /* if number of channels not specified, default to 2 */
+ if (vol->max_channels < 2)
+ vol->max_channels = 2;
+ break;
+ case Opt_nomultichannel:
+ vol->multichannel = false;
+ vol->max_channels = 1;
+ break;
case Opt_compress:
vol->compression = UNKNOWN_TYPE;
cifs_dbg(VFS,
@@ -2165,6 +1922,15 @@
}
vol->max_credits = option;
break;
+ case Opt_max_channels:
+ if (get_option_ul(args, &option) || option < 1 ||
+ option > CIFS_MAX_CHANNELS) {
+ cifs_dbg(VFS, "%s: Invalid max_channels value, needs to be 1-%d\n",
+ __func__, CIFS_MAX_CHANNELS);
+ goto cifs_parse_mount_err;
+ }
+ vol->max_channels = option;
+ break;
/* String Arguments */
@@ -2180,7 +1946,7 @@
if (strnlen(string, CIFS_MAX_USERNAME_LEN) >
CIFS_MAX_USERNAME_LEN) {
- pr_warn("CIFS: username too long\n");
+ pr_warn("username too long\n");
goto cifs_parse_mount_err;
}
@@ -2203,11 +1969,11 @@
tmp_end++;
if (!(tmp_end < end && tmp_end[1] == delim)) {
/* No it is not. Set the password to NULL */
- kzfree(vol->password);
+ kfree_sensitive(vol->password);
vol->password = NULL;
break;
}
- /* Fallthrough - to Opt_pass below.*/
+ fallthrough; /* to Opt_pass below */
case Opt_pass:
/* Obtain the value string */
value = strchr(data, '=');
@@ -2241,12 +2007,12 @@
options = end;
}
- kzfree(vol->password);
+ kfree_sensitive(vol->password);
/* Now build new password string */
temp_len = strlen(value);
vol->password = kzalloc(temp_len+1, GFP_KERNEL);
if (vol->password == NULL) {
- pr_warn("CIFS: no memory for password\n");
+ pr_warn("no memory for password\n");
goto cifs_parse_mount_err;
}
@@ -2270,7 +2036,7 @@
if (!cifs_convert_address(dstaddr, string,
strlen(string))) {
- pr_err("CIFS: bad ip= option (%s).\n", string);
+ pr_err("bad ip= option (%s)\n", string);
goto cifs_parse_mount_err;
}
got_ip = true;
@@ -2282,14 +2048,14 @@
if (strnlen(string, CIFS_MAX_DOMAINNAME_LEN)
== CIFS_MAX_DOMAINNAME_LEN) {
- pr_warn("CIFS: domain name too long\n");
+ pr_warn("domain name too long\n");
goto cifs_parse_mount_err;
}
kfree(vol->domainname);
vol->domainname = kstrdup(string, GFP_KERNEL);
if (!vol->domainname) {
- pr_warn("CIFS: no memory for domainname\n");
+ pr_warn("no memory for domainname\n");
goto cifs_parse_mount_err;
}
cifs_dbg(FYI, "Domain name set\n");
@@ -2302,7 +2068,7 @@
if (!cifs_convert_address(
(struct sockaddr *)&vol->srcaddr,
string, strlen(string))) {
- pr_warn("CIFS: Could not parse srcaddr: %s\n",
+ pr_warn("Could not parse srcaddr: %s\n",
string);
goto cifs_parse_mount_err;
}
@@ -2313,7 +2079,7 @@
goto out_nomem;
if (strnlen(string, 1024) >= 65) {
- pr_warn("CIFS: iocharset name too long.\n");
+ pr_warn("iocharset name too long\n");
goto cifs_parse_mount_err;
}
@@ -2322,7 +2088,7 @@
vol->iocharset = kstrdup(string,
GFP_KERNEL);
if (!vol->iocharset) {
- pr_warn("CIFS: no memory for charset\n");
+ pr_warn("no memory for charset\n");
goto cifs_parse_mount_err;
}
}
@@ -2353,7 +2119,7 @@
* set at top of the function
*/
if (i == RFC1001_NAME_LEN && string[i] != 0)
- pr_warn("CIFS: netbiosname longer than 15 truncated.\n");
+ pr_warn("netbiosname longer than 15 truncated\n");
break;
case Opt_servern:
/* servernetbiosname specified override *SMBSERVER */
@@ -2379,7 +2145,7 @@
/* The string has 16th byte zero still from
set at top of the function */
if (i == RFC1001_NAME_LEN && string[i] != 0)
- pr_warn("CIFS: server netbiosname longer than 15 truncated.\n");
+ pr_warn("server netbiosname longer than 15 truncated\n");
break;
case Opt_ver:
/* version of mount userspace tools, not dialect */
@@ -2390,17 +2156,15 @@
/* If interface changes in mount.cifs bump to new ver */
if (strncasecmp(string, "1", 1) == 0) {
if (strlen(string) > 1) {
- pr_warn("Bad mount helper ver=%s. Did "
- "you want SMB1 (CIFS) dialect "
- "and mean to type vers=1.0 "
- "instead?\n", string);
+ pr_warn("Bad mount helper ver=%s. Did you want SMB1 (CIFS) dialect and mean to type vers=1.0 instead?\n",
+ string);
goto cifs_parse_mount_err;
}
/* This is the default */
break;
}
/* For all other value, error */
- pr_warn("CIFS: Invalid mount helper version specified\n");
+ pr_warn("Invalid mount helper version specified\n");
goto cifs_parse_mount_err;
case Opt_vers:
/* protocol version (dialect) */
@@ -2443,7 +2207,7 @@
}
if (!sloppy && invalid) {
- pr_err("CIFS: Unknown mount option \"%s\"\n", invalid);
+ pr_err("Unknown mount option \"%s\"\n", invalid);
goto cifs_parse_mount_err;
}
@@ -2479,7 +2243,7 @@
slash = strchr(&vol->UNC[2], '\\');
len = slash - &vol->UNC[2];
if (!cifs_convert_address(dstaddr, &vol->UNC[2], len)) {
- pr_err("Unable to determine destination address.\n");
+ pr_err("Unable to determine destination address\n");
goto cifs_parse_mount_err;
}
}
@@ -2490,19 +2254,15 @@
if (uid_specified)
vol->override_uid = override_uid;
else if (override_uid == 1)
- pr_notice("CIFS: ignoring forceuid mount option specified with no uid= option.\n");
+ pr_notice("ignoring forceuid mount option specified with no uid= option\n");
if (gid_specified)
vol->override_gid = override_gid;
else if (override_gid == 1)
- pr_notice("CIFS: ignoring forcegid mount option specified with no gid= option.\n");
+ pr_notice("ignoring forcegid mount option specified with no gid= option\n");
if (got_version == false)
- pr_warn("No dialect specified on mount. Default has changed to "
- "a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS "
- "(SMB1). To use the less secure SMB1 dialect to access "
- "old servers which do not support SMB3 (or SMB2.1) specify vers=1.0"
- " on mount.\n");
+ pr_warn_once("No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3.1.1), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3.1.1 (or even SMB3 or SMB2.1) specify vers=1.0 on mount.\n");
kfree(mountdata_copy);
return 0;
@@ -2519,8 +2279,8 @@
* specified, or if srcaddr is specified and
* matches the IP address of the rhs argument.
*/
-static bool
-srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs)
+bool
+cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs)
{
switch (srcaddr->sa_family) {
case AF_UNSPEC:
@@ -2611,7 +2371,7 @@
return false; /* don't expect to be here */
}
- if (!srcip_matches(srcaddr, (struct sockaddr *)&server->srcaddr))
+ if (!cifs_match_ipaddr(srcaddr, (struct sockaddr *)&server->srcaddr))
return false;
return true;
@@ -2693,7 +2453,11 @@
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
- if (!match_server(server, vol))
+ /*
+ * Skip ses channels since they're only handled in lower layers
+ * (e.g. cifs_send_recv).
+ */
+ if (server->is_channel || !match_server(server, vol))
continue;
++server->srv_count;
@@ -2750,7 +2514,7 @@
send_sig(SIGKILL, task, 1);
}
-static struct TCP_Server_Info *
+struct TCP_Server_Info *
cifs_get_tcp_session(struct smb_vol *volume_info)
{
struct TCP_Server_Info *tcp_ses = NULL;
@@ -2809,7 +2573,11 @@
sizeof(tcp_ses->srcaddr));
memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr,
sizeof(tcp_ses->dstaddr));
- generate_random_uuid(tcp_ses->client_guid);
+ if (volume_info->use_client_guid)
+ memcpy(tcp_ses->client_guid, volume_info->client_guid,
+ SMB2_CLIENT_GUID_SIZE);
+ else
+ generate_random_uuid(tcp_ses->client_guid);
/*
* at this point we are the only ones with the pointer
* to the struct since the kernel thread not created yet
@@ -2862,6 +2630,11 @@
tcp_ses->min_offload = volume_info->min_offload;
tcp_ses->tcpStatus = CifsNeedNegotiate;
+ if ((volume_info->max_credits < 20) || (volume_info->max_credits > 60000))
+ tcp_ses->max_credits = SMB2_MAX_CREDITS_AVAILABLE;
+ else
+ tcp_ses->max_credits = volume_info->max_credits;
+
tcp_ses->nr_targets = 1;
tcp_ses->ignore_signature = volume_info->ignore_signature;
/* thread spawned, put it on the list */
@@ -2898,6 +2671,13 @@
vol->sectype != ses->sectype)
return 0;
+ /*
+ * If an existing session is limited to less channels than
+ * requested, it should not be reused
+ */
+ if (ses->chan_max < vol->max_channels)
+ return 0;
+
switch (ses->sectype) {
case Kerberos:
if (!uid_eq(vol->cred_uid, ses->cred_uid))
@@ -3071,6 +2851,14 @@
list_del_init(&ses->smb_ses_list);
spin_unlock(&cifs_tcp_ses_lock);
+ /* close any extra channels */
+ if (ses->chan_count > 1) {
+ int i;
+
+ for (i = 1; i < ses->chan_count; i++)
+ cifs_put_tcp_session(ses->chans[i].server, 0);
+ }
+
sesInfoFree(ses);
cifs_put_tcp_session(server, 0);
}
@@ -3200,12 +2988,12 @@
strlen(ses->domainName),
GFP_KERNEL);
if (!vol->domainname) {
- cifs_dbg(FYI, "Unable to allocate %zd bytes for "
- "domain\n", len);
+ cifs_dbg(FYI, "Unable to allocate %zd bytes for domain\n",
+ len);
rc = -ENOMEM;
kfree(vol->username);
vol->username = NULL;
- kzfree(vol->password);
+ kfree_sensitive(vol->password);
vol->password = NULL;
goto out_key_put;
}
@@ -3317,14 +3105,25 @@
ses->sectype = volume_info->sectype;
ses->sign = volume_info->sign;
mutex_lock(&ses->session_mutex);
+
+ /* add server as first channel */
+ ses->chans[0].server = server;
+ ses->chan_count = 1;
+ ses->chan_max = volume_info->multichannel ? volume_info->max_channels:1;
+
rc = cifs_negotiate_protocol(xid, ses);
if (!rc)
rc = cifs_setup_session(xid, ses, volume_info->local_nls);
+
+ /* each channel uses a different signing key */
+ memcpy(ses->chans[0].signkey, ses->smb3signingkey,
+ sizeof(ses->smb3signingkey));
+
mutex_unlock(&ses->session_mutex);
if (rc)
goto get_ses_fail;
- /* success, put it on the list */
+ /* success, put it on the list and add it as first channel */
spin_lock(&cifs_tcp_ses_lock);
list_add(&ses->smb_ses_list, &server->smb_ses_list);
spin_unlock(&cifs_tcp_ses_lock);
@@ -3355,6 +3154,8 @@
return 0;
if (tcon->no_lease != volume_info->no_lease)
return 0;
+ if (tcon->nodelete != volume_info->nodelete)
+ return 0;
return 1;
}
@@ -3511,10 +3312,9 @@
if (volume_info->linux_ext) {
if (ses->server->posix_ext_supported) {
tcon->posix_extensions = true;
- printk_once(KERN_WARNING
- "SMB3.11 POSIX Extensions are experimental\n");
+ pr_warn_once("SMB3.11 POSIX Extensions are experimental\n");
} else {
- cifs_dbg(VFS, "Server does not support mounting with posix SMB3.11 extensions.\n");
+ cifs_dbg(VFS, "Server does not support mounting with posix SMB3.11 extensions\n");
rc = -EOPNOTSUPP;
goto out_fail;
}
@@ -3572,6 +3372,16 @@
cifs_dbg(VFS, "cache=singleclient requested on mount but NO_CACHING flag set on share\n");
}
+ if (volume_info->no_lease) {
+ if (ses->server->vals->protocol_id == 0) {
+ cifs_dbg(VFS,
+ "SMB2 or later required for nolease option\n");
+ rc = -EOPNOTSUPP;
+ goto out_fail;
+ } else
+ tcon->no_lease = volume_info->no_lease;
+ }
+
/*
* We can have only one retry value for a connection to a share so for
* resources mounted more than once to the same server share the last
@@ -3579,9 +3389,12 @@
*/
tcon->retry = volume_info->retry;
tcon->nocase = volume_info->nocase;
- tcon->nohandlecache = volume_info->nohandlecache;
+ if (ses->server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING)
+ tcon->nohandlecache = volume_info->nohandlecache;
+ else
+ tcon->nohandlecache = 1;
+ tcon->nodelete = volume_info->nodelete;
tcon->local_lease = volume_info->local_lease;
- tcon->no_lease = volume_info->no_lease;
INIT_LIST_HEAD(&tcon->pending_opens);
spin_lock(&cifs_tcp_ses_lock);
@@ -3691,9 +3504,10 @@
spin_lock(&cifs_tcp_ses_lock);
cifs_sb = CIFS_SB(sb);
tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb));
- if (IS_ERR(tlink)) {
+ if (tlink == NULL) {
+ /* can not match superblock if tlink were ever null */
spin_unlock(&cifs_tcp_ses_lock);
- return rc;
+ return 0;
}
tcon = tlink_tcon(tlink);
ses = tcon->ses;
@@ -3873,13 +3687,21 @@
saddr = (struct sockaddr *) &server->dstaddr;
if (server->dstaddr.ss_family == AF_INET6) {
- sport = ((struct sockaddr_in6 *) saddr)->sin6_port;
+ struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&server->dstaddr;
+
+ sport = ipv6->sin6_port;
slen = sizeof(struct sockaddr_in6);
sfamily = AF_INET6;
+ cifs_dbg(FYI, "%s: connecting to [%pI6]:%d\n", __func__, &ipv6->sin6_addr,
+ ntohs(sport));
} else {
- sport = ((struct sockaddr_in *) saddr)->sin_port;
+ struct sockaddr_in *ipv4 = (struct sockaddr_in *)&server->dstaddr;
+
+ sport = ipv4->sin_port;
slen = sizeof(struct sockaddr_in);
sfamily = AF_INET;
+ cifs_dbg(FYI, "%s: connecting to %pI4:%d\n", __func__, &ipv4->sin_addr,
+ ntohs(sport));
}
if (socket == NULL) {
@@ -3921,14 +3743,8 @@
socket->sk->sk_rcvbuf = 140 * 1024;
}
- if (server->tcp_nodelay) {
- int val = 1;
- rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
- (char *)&val, sizeof(val));
- if (rc)
- cifs_dbg(FYI, "set TCP_NODELAY socket option error %d\n",
- rc);
- }
+ if (server->tcp_nodelay)
+ tcp_sock_set_nodelay(socket->sk);
cifs_dbg(FYI, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx\n",
socket->sk->sk_sndbuf,
@@ -4201,6 +4017,7 @@
cifs_sb->prepath = kstrdup(pvolume_info->prepath, GFP_KERNEL);
if (cifs_sb->prepath == NULL)
return -ENOMEM;
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;
}
return 0;
@@ -4210,7 +4027,7 @@
cifs_cleanup_volume_info_contents(struct smb_vol *volume_info)
{
kfree(volume_info->username);
- kzfree(volume_info->password);
+ kfree_sensitive(volume_info->password);
kfree(volume_info->UNC);
kfree(volume_info->domainname);
kfree(volume_info->iocharset);
@@ -4270,11 +4087,6 @@
*nserver = server;
- if ((vol->max_credits < 20) || (vol->max_credits > 60000))
- server->max_credits = SMB2_MAX_CREDITS_AVAILABLE;
- else
- server->max_credits = vol->max_credits;
-
/* get a reference to a SMB session */
ses = cifs_get_smb_ses(server, vol);
if (IS_ERR(ses)) {
@@ -4319,7 +4131,7 @@
/* do not care if a following call succeed - informational */
if (!tcon->pipe && server->ops->qfs_tcon) {
- server->ops->qfs_tcon(*xid, tcon);
+ server->ops->qfs_tcon(*xid, tcon, cifs_sb);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE) {
if (tcon->fsDevInfo.DeviceCharacteristics &
cpu_to_le32(FILE_READ_ONLY_DEVICE))
@@ -4413,11 +4225,11 @@
static int
expand_dfs_referral(const unsigned int xid, struct cifs_ses *ses,
struct smb_vol *volume_info, struct cifs_sb_info *cifs_sb,
- int check_prefix)
+ char *ref_path)
{
int rc;
struct dfs_info3_param referral = {0};
- char *full_path = NULL, *ref_path = NULL, *mdata = NULL;
+ char *full_path = NULL, *mdata = NULL;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS)
return -EREMOTE;
@@ -4426,9 +4238,6 @@
if (IS_ERR(full_path))
return PTR_ERR(full_path);
- /* For DFS paths, skip the first '\' of the UNC */
- ref_path = check_prefix ? full_path + 1 : volume_info->UNC + 1;
-
rc = dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb),
ref_path, &referral, NULL);
if (!rc) {
@@ -4491,13 +4300,10 @@
return 0;
}
-static int setup_dfs_tgt_conn(const char *path,
+static int setup_dfs_tgt_conn(const char *path, const char *full_path,
const struct dfs_cache_tgt_iterator *tgt_it,
- struct cifs_sb_info *cifs_sb,
- struct smb_vol *vol,
- unsigned int *xid,
- struct TCP_Server_Info **server,
- struct cifs_ses **ses,
+ struct cifs_sb_info *cifs_sb, struct smb_vol *vol, unsigned int *xid,
+ struct TCP_Server_Info **server, struct cifs_ses **ses,
struct cifs_tcon **tcon)
{
int rc;
@@ -4511,8 +4317,7 @@
if (rc)
return rc;
- mdata = cifs_compose_mount_options(cifs_sb->mountdata, path, &ref,
- &fake_devname);
+ mdata = cifs_compose_mount_options(cifs_sb->mountdata, full_path + 1, &ref, &fake_devname);
free_dfs_info_param(&ref);
if (IS_ERR(mdata)) {
@@ -4535,7 +4340,7 @@
mount_put_conns(cifs_sb, *xid, *server, *ses, *tcon);
rc = mount_get_conns(&fake_vol, cifs_sb, xid, server, ses,
tcon);
- if (!rc) {
+ if (!rc || (*server && *ses)) {
/*
* We were able to connect to new target server.
* Update current volume info with new target server.
@@ -4547,14 +4352,10 @@
return rc;
}
-static int mount_do_dfs_failover(const char *path,
- struct cifs_sb_info *cifs_sb,
- struct smb_vol *vol,
- struct cifs_ses *root_ses,
- unsigned int *xid,
- struct TCP_Server_Info **server,
- struct cifs_ses **ses,
- struct cifs_tcon **tcon)
+static int do_dfs_failover(const char *path, const char *full_path, struct cifs_sb_info *cifs_sb,
+ struct smb_vol *vol, struct cifs_ses *root_ses, unsigned int *xid,
+ struct TCP_Server_Info **server, struct cifs_ses **ses,
+ struct cifs_tcon **tcon)
{
int rc;
struct dfs_cache_tgt_list tgt_list;
@@ -4573,9 +4374,9 @@
if (rc)
break;
/* Connect to next DFS target */
- rc = setup_dfs_tgt_conn(path, tgt_it, cifs_sb, vol, xid, server,
- ses, tcon);
- if (!rc || rc == -EACCES || rc == -EOPNOTSUPP)
+ rc = setup_dfs_tgt_conn(path, full_path, tgt_it, cifs_sb, vol, xid, server, ses,
+ tcon);
+ if (!rc || (*server && *ses))
break;
}
if (!rc) {
@@ -4734,8 +4535,7 @@
rc = cifs_are_all_path_components_accessible(server, xid, tcon,
cifs_sb, full_path, tcon->Flags & SMB_SHARE_IS_IN_DFS);
if (rc != 0) {
- cifs_server_dbg(VFS, "cannot query dirs between root and final path, "
- "enabling CIFS_MOUNT_USE_PREFIX_PATH\n");
+ cifs_server_dbg(VFS, "cannot query dirs between root and final path, enabling CIFS_MOUNT_USE_PREFIX_PATH\n");
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;
rc = 0;
}
@@ -4746,221 +4546,238 @@
}
#ifdef CONFIG_CIFS_DFS_UPCALL
-static inline void set_root_tcon(struct cifs_sb_info *cifs_sb,
- struct cifs_tcon *tcon,
- struct cifs_tcon **root)
+static void set_root_ses(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses,
+ struct cifs_ses **root_ses)
{
- spin_lock(&cifs_tcp_ses_lock);
- tcon->tc_count++;
- tcon->remap = cifs_remap(cifs_sb);
- spin_unlock(&cifs_tcp_ses_lock);
- *root = tcon;
+ if (ses) {
+ spin_lock(&cifs_tcp_ses_lock);
+ ses->ses_count++;
+ if (ses->tcon_ipc)
+ ses->tcon_ipc->remap = cifs_remap(cifs_sb);
+ spin_unlock(&cifs_tcp_ses_lock);
+ }
+ *root_ses = ses;
+}
+
+static void put_root_ses(struct cifs_ses *ses)
+{
+ if (ses)
+ cifs_put_smb_ses(ses);
+}
+
+/* Check if a path component is remote and then update @dfs_path accordingly */
+static int check_dfs_prepath(struct cifs_sb_info *cifs_sb, struct smb_vol *vol,
+ const unsigned int xid, struct TCP_Server_Info *server,
+ struct cifs_tcon *tcon, char **dfs_path)
+{
+ char *path, *s;
+ char sep = CIFS_DIR_SEP(cifs_sb), tmp;
+ char *npath;
+ int rc = 0;
+ int added_treename = tcon->Flags & SMB_SHARE_IS_IN_DFS;
+ int skip = added_treename;
+
+ path = cifs_build_path_to_root(vol, cifs_sb, tcon, added_treename);
+ if (!path)
+ return -ENOMEM;
+
+ /*
+ * Walk through the path components in @path and check if they're accessible. In case any of
+ * the components is -EREMOTE, then update @dfs_path with the next DFS referral request path
+ * (NOT including the remaining components).
+ */
+ s = path;
+ do {
+ /* skip separators */
+ while (*s && *s == sep)
+ s++;
+ if (!*s)
+ break;
+ /* next separator */
+ while (*s && *s != sep)
+ s++;
+ /*
+ * if the treename is added, we then have to skip the first
+ * part within the separators
+ */
+ if (skip) {
+ skip = 0;
+ continue;
+ }
+ tmp = *s;
+ *s = 0;
+ rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, path);
+ if (rc && rc == -EREMOTE) {
+ struct smb_vol v = {NULL};
+ /* if @path contains a tree name, skip it in the prefix path */
+ if (added_treename) {
+ rc = cifs_parse_devname(path, &v);
+ if (rc)
+ break;
+ rc = -EREMOTE;
+ npath = build_unc_path_to_root(&v, cifs_sb, true);
+ cifs_cleanup_volume_info_contents(&v);
+ } else {
+ v.UNC = vol->UNC;
+ v.prepath = path + 1;
+ npath = build_unc_path_to_root(&v, cifs_sb, true);
+ }
+ if (IS_ERR(npath)) {
+ rc = PTR_ERR(npath);
+ break;
+ }
+ kfree(*dfs_path);
+ *dfs_path = npath;
+ }
+ *s = tmp;
+ } while (rc == 0);
+
+ kfree(path);
+ return rc;
}
int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
{
int rc = 0;
unsigned int xid;
- struct cifs_ses *ses;
- struct cifs_tcon *root_tcon = NULL;
+ struct TCP_Server_Info *server = NULL;
+ struct cifs_ses *ses = NULL, *root_ses = NULL;
struct cifs_tcon *tcon = NULL;
- struct TCP_Server_Info *server;
- char *root_path = NULL, *full_path = NULL;
- char *old_mountdata, *origin_mountdata = NULL;
- int count;
+ int count = 0;
+ char *ref_path = NULL, *full_path = NULL;
+ char *oldmnt = NULL;
+ char *mntdata = NULL;
rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses, &tcon);
- if (!rc && tcon) {
- /* If not a standalone DFS root, then check if path is remote */
- rc = dfs_cache_find(xid, ses, cifs_sb->local_nls,
- cifs_remap(cifs_sb), vol->UNC + 1, NULL,
- NULL);
- if (rc) {
- rc = is_path_remote(cifs_sb, vol, xid, server, tcon);
- if (!rc)
- goto out;
- if (rc != -EREMOTE)
- goto error;
- }
- }
/*
- * If first DFS target server went offline and we failed to connect it,
- * server and ses pointers are NULL at this point, though we still have
- * chance to get a cached DFS referral in expand_dfs_referral() and
- * retry next target available in it.
+ * Unconditionally try to get an DFS referral (even cached) to determine whether it is an
+ * DFS mount.
*
- * If a NULL ses ptr is passed to dfs_cache_find(), a lookup will be
- * performed against DFS path and *no* requests will be sent to server
- * for any new DFS referrals. Hence it's safe to skip checking whether
- * server or ses ptr is NULL.
+ * Skip prefix path to provide support for DFS referrals from w2k8 servers which don't seem
+ * to respond with PATH_NOT_COVERED to requests that include the prefix.
*/
- if (rc == -EACCES || rc == -EOPNOTSUPP)
- goto error;
-
- root_path = build_unc_path_to_root(vol, cifs_sb, false);
- if (IS_ERR(root_path)) {
- rc = PTR_ERR(root_path);
- root_path = NULL;
- goto error;
+ if (dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb), vol->UNC + 1, NULL,
+ NULL)) {
+ /* No DFS referral was returned. Looks like a regular share. */
+ if (rc)
+ goto error;
+ /* Check if it is fully accessible and then mount it */
+ rc = is_path_remote(cifs_sb, vol, xid, server, tcon);
+ if (!rc)
+ goto out;
+ if (rc != -EREMOTE)
+ goto error;
}
-
- full_path = build_unc_path_to_root(vol, cifs_sb, true);
- if (IS_ERR(full_path)) {
- rc = PTR_ERR(full_path);
- full_path = NULL;
- goto error;
- }
- /*
- * Perform an unconditional check for whether there are DFS
- * referrals for this path without prefix, to provide support
- * for DFS referrals from w2k8 servers which don't seem to respond
- * with PATH_NOT_COVERED to requests that include the prefix.
- * Chase the referral if found, otherwise continue normally.
- */
- old_mountdata = cifs_sb->mountdata;
- (void)expand_dfs_referral(xid, ses, vol, cifs_sb, false);
-
- if (cifs_sb->mountdata == NULL) {
- rc = -ENOENT;
- goto error;
- }
-
- /* Save DFS root volume information for DFS refresh worker */
- origin_mountdata = kstrndup(cifs_sb->mountdata,
- strlen(cifs_sb->mountdata), GFP_KERNEL);
- if (!origin_mountdata) {
+ /* Save mount options */
+ mntdata = kstrndup(cifs_sb->mountdata, strlen(cifs_sb->mountdata), GFP_KERNEL);
+ if (!mntdata) {
rc = -ENOMEM;
goto error;
}
-
- if (cifs_sb->mountdata != old_mountdata) {
- /* If we were redirected, reconnect to new target server */
- mount_put_conns(cifs_sb, xid, server, ses, tcon);
- rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses, &tcon);
- }
- if (rc) {
- if (rc == -EACCES || rc == -EOPNOTSUPP)
- goto error;
- /* Perform DFS failover to any other DFS targets */
- rc = mount_do_dfs_failover(root_path + 1, cifs_sb, vol, NULL,
- &xid, &server, &ses, &tcon);
- if (rc)
- goto error;
- }
-
- kfree(root_path);
- root_path = build_unc_path_to_root(vol, cifs_sb, false);
- if (IS_ERR(root_path)) {
- rc = PTR_ERR(root_path);
- root_path = NULL;
+ /* Get path of DFS root */
+ ref_path = build_unc_path_to_root(vol, cifs_sb, false);
+ if (IS_ERR(ref_path)) {
+ rc = PTR_ERR(ref_path);
+ ref_path = NULL;
goto error;
}
- /* Cache out resolved root server */
- (void)dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb),
- root_path + 1, NULL, NULL);
- kfree(root_path);
- root_path = NULL;
- set_root_tcon(cifs_sb, tcon, &root_tcon);
-
- for (count = 1; ;) {
- if (!rc && tcon) {
- rc = is_path_remote(cifs_sb, vol, xid, server, tcon);
- if (!rc || rc != -EREMOTE)
- break;
- }
- /*
- * BB: when we implement proper loop detection,
- * we will remove this check. But now we need it
- * to prevent an indefinite loop if 'DFS tree' is
- * misconfigured (i.e. has loops).
- */
- if (count++ > MAX_NESTED_LINKS) {
- rc = -ELOOP;
- break;
- }
-
+ set_root_ses(cifs_sb, ses, &root_ses);
+ do {
+ /* Save full path of last DFS path we used to resolve final target server */
kfree(full_path);
- full_path = build_unc_path_to_root(vol, cifs_sb, true);
+ full_path = build_unc_path_to_root(vol, cifs_sb, !!count);
if (IS_ERR(full_path)) {
rc = PTR_ERR(full_path);
full_path = NULL;
break;
}
-
- old_mountdata = cifs_sb->mountdata;
- rc = expand_dfs_referral(xid, root_tcon->ses, vol, cifs_sb,
- true);
+ /* Chase referral */
+ oldmnt = cifs_sb->mountdata;
+ rc = expand_dfs_referral(xid, root_ses, vol, cifs_sb, ref_path + 1);
if (rc)
break;
-
- if (cifs_sb->mountdata != old_mountdata) {
+ /* Connect to new DFS target only if we were redirected */
+ if (oldmnt != cifs_sb->mountdata) {
mount_put_conns(cifs_sb, xid, server, ses, tcon);
- rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses,
- &tcon);
- /*
- * Ensure that DFS referrals go through new root server.
- */
- if (!rc && tcon &&
- (tcon->share_flags & (SHI1005_FLAGS_DFS |
- SHI1005_FLAGS_DFS_ROOT))) {
- cifs_put_tcon(root_tcon);
- set_root_tcon(cifs_sb, tcon, &root_tcon);
- }
+ rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses, &tcon);
}
- if (rc) {
- if (rc == -EACCES || rc == -EOPNOTSUPP)
- break;
- /* Perform DFS failover to any other DFS targets */
- rc = mount_do_dfs_failover(full_path + 1, cifs_sb, vol,
- root_tcon->ses, &xid,
- &server, &ses, &tcon);
- if (rc == -EACCES || rc == -EOPNOTSUPP || !server ||
- !ses)
- goto error;
+ if (rc && !server && !ses) {
+ /* Failed to connect. Try to connect to other targets in the referral. */
+ rc = do_dfs_failover(ref_path + 1, full_path, cifs_sb, vol, root_ses, &xid,
+ &server, &ses, &tcon);
}
- }
- cifs_put_tcon(root_tcon);
+ if (rc == -EACCES || rc == -EOPNOTSUPP || !server || !ses)
+ break;
+ if (!tcon)
+ continue;
+ /* Make sure that requests go through new root servers */
+ if (is_tcon_dfs(tcon)) {
+ put_root_ses(root_ses);
+ set_root_ses(cifs_sb, ses, &root_ses);
+ }
+ /* Check for remaining path components and then continue chasing them (-EREMOTE) */
+ rc = check_dfs_prepath(cifs_sb, vol, xid, server, tcon, &ref_path);
+ /* Prevent recursion on broken link referrals */
+ if (rc == -EREMOTE && ++count > MAX_NESTED_LINKS)
+ rc = -ELOOP;
+ } while (rc == -EREMOTE);
if (rc)
goto error;
-
- spin_lock(&cifs_tcp_ses_lock);
- if (!tcon->dfs_path) {
- /* Save full path in new tcon to do failover when reconnecting tcons */
- tcon->dfs_path = full_path;
- full_path = NULL;
- tcon->remap = cifs_remap(cifs_sb);
- }
- cifs_sb->origin_fullpath = kstrndup(tcon->dfs_path,
- strlen(tcon->dfs_path),
- GFP_ATOMIC);
+ put_root_ses(root_ses);
+ root_ses = NULL;
+ kfree(ref_path);
+ ref_path = NULL;
+ /*
+ * Store DFS full path in both superblock and tree connect structures.
+ *
+ * For DFS root mounts, the prefix path (cifs_sb->prepath) is preserved during reconnect so
+ * only the root path is set in cifs_sb->origin_fullpath and tcon->dfs_path. And for DFS
+ * links, the prefix path is included in both and may be changed during reconnect. See
+ * cifs_tree_connect().
+ */
+ cifs_sb->origin_fullpath = kstrndup(full_path, strlen(full_path), GFP_KERNEL);
if (!cifs_sb->origin_fullpath) {
- spin_unlock(&cifs_tcp_ses_lock);
rc = -ENOMEM;
goto error;
}
+ spin_lock(&cifs_tcp_ses_lock);
+ tcon->dfs_path = full_path;
+ full_path = NULL;
+ tcon->remap = cifs_remap(cifs_sb);
spin_unlock(&cifs_tcp_ses_lock);
- rc = dfs_cache_add_vol(origin_mountdata, vol, cifs_sb->origin_fullpath);
- if (rc) {
- kfree(cifs_sb->origin_fullpath);
+ /* Add original volume information for DFS cache to be used when refreshing referrals */
+ rc = dfs_cache_add_vol(mntdata, vol, cifs_sb->origin_fullpath);
+ if (rc)
goto error;
- }
/*
* After reconnecting to a different server, unique ids won't
* match anymore, so we disable serverino. This prevents
* dentry revalidation to think the dentry are stale (ESTALE).
*/
cifs_autodisable_serverino(cifs_sb);
+ /*
+ * Force the use of prefix path to support failover on DFS paths that
+ * resolve to targets that have different prefix paths.
+ */
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;
+ kfree(cifs_sb->prepath);
+ cifs_sb->prepath = vol->prepath;
+ vol->prepath = NULL;
+
out:
free_xid(xid);
+ cifs_try_adding_channels(ses);
return mount_setup_tlink(cifs_sb, ses, tcon);
error:
+ kfree(ref_path);
kfree(full_path);
- kfree(root_path);
- kfree(origin_mountdata);
+ kfree(mntdata);
+ kfree(cifs_sb->origin_fullpath);
+ put_root_ses(root_ses);
mount_put_conns(cifs_sb, xid, server, ses, tcon);
return rc;
}
@@ -5096,8 +4913,7 @@
bcc_ptr += strlen("?????");
bcc_ptr += 1;
count = bcc_ptr - &pSMB->Password[0];
- pSMB->hdr.smb_buf_length = cpu_to_be32(be32_to_cpu(
- pSMB->hdr.smb_buf_length) + count);
+ be32_add_cpu(&pSMB->hdr.smb_buf_length, count);
pSMB->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length,
@@ -5200,7 +5016,7 @@
cifs_negotiate_protocol(const unsigned int xid, struct cifs_ses *ses)
{
int rc = 0;
- struct TCP_Server_Info *server = ses->server;
+ struct TCP_Server_Info *server = cifs_ses_server(ses);
if (!server->ops->need_neg || !server->ops->negotiate)
return -ENOSYS;
@@ -5227,23 +5043,25 @@
struct nls_table *nls_info)
{
int rc = -ENOSYS;
- struct TCP_Server_Info *server = ses->server;
+ struct TCP_Server_Info *server = cifs_ses_server(ses);
- ses->capabilities = server->capabilities;
- if (linuxExtEnabled == 0)
- ses->capabilities &= (~server->vals->cap_unix);
+ if (!ses->binding) {
+ ses->capabilities = server->capabilities;
+ if (linuxExtEnabled == 0)
+ ses->capabilities &= (~server->vals->cap_unix);
+
+ if (ses->auth_key.response) {
+ cifs_dbg(FYI, "Free previous auth_key.response = %p\n",
+ ses->auth_key.response);
+ kfree(ses->auth_key.response);
+ ses->auth_key.response = NULL;
+ ses->auth_key.len = 0;
+ }
+ }
cifs_dbg(FYI, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d\n",
server->sec_mode, server->capabilities, server->timeAdj);
- if (ses->auth_key.response) {
- cifs_dbg(FYI, "Free previous auth_key.response = %p\n",
- ses->auth_key.response);
- kfree(ses->auth_key.response);
- ses->auth_key.response = NULL;
- ses->auth_key.len = 0;
- }
-
if (server->ops->sess_setup)
rc = server->ops->sess_setup(xid, ses, nls_info);
@@ -5325,7 +5143,7 @@
out:
kfree(vol_info->username);
- kzfree(vol_info->password);
+ kfree_sensitive(vol_info->password);
kfree(vol_info);
return tcon;
@@ -5513,3 +5331,113 @@
queue_delayed_work(cifsiod_wq, &cifs_sb->prune_tlinks,
TLINK_IDLE_EXPIRE);
}
+
+#ifdef CONFIG_CIFS_DFS_UPCALL
+int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const struct nls_table *nlsc)
+{
+ int rc;
+ struct TCP_Server_Info *server = tcon->ses->server;
+ const struct smb_version_operations *ops = server->ops;
+ struct dfs_cache_tgt_list tl;
+ struct dfs_cache_tgt_iterator *it = NULL;
+ char *tree;
+ const char *tcp_host;
+ size_t tcp_host_len;
+ const char *dfs_host;
+ size_t dfs_host_len;
+ char *share = NULL, *prefix = NULL;
+ struct dfs_info3_param ref = {0};
+ bool isroot;
+
+ tree = kzalloc(MAX_TREE_SIZE, GFP_KERNEL);
+ if (!tree)
+ return -ENOMEM;
+
+ /* If it is not dfs or there was no cached dfs referral, then reconnect to same share */
+ if (!tcon->dfs_path || dfs_cache_noreq_find(tcon->dfs_path + 1, &ref, &tl)) {
+ if (tcon->ipc) {
+ scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", server->hostname);
+ rc = ops->tree_connect(xid, tcon->ses, tree, tcon, nlsc);
+ } else {
+ rc = ops->tree_connect(xid, tcon->ses, tcon->treeName, tcon, nlsc);
+ }
+ goto out;
+ }
+
+ isroot = ref.server_type == DFS_TYPE_ROOT;
+ free_dfs_info_param(&ref);
+
+ extract_unc_hostname(server->hostname, &tcp_host, &tcp_host_len);
+
+ for (it = dfs_cache_get_tgt_iterator(&tl); it; it = dfs_cache_get_next_tgt(&tl, it)) {
+ bool target_match;
+
+ kfree(share);
+ kfree(prefix);
+ share = NULL;
+ prefix = NULL;
+
+ rc = dfs_cache_get_tgt_share(tcon->dfs_path + 1, it, &share, &prefix);
+ if (rc) {
+ cifs_dbg(VFS, "%s: failed to parse target share %d\n",
+ __func__, rc);
+ continue;
+ }
+
+ extract_unc_hostname(share, &dfs_host, &dfs_host_len);
+
+ if (dfs_host_len != tcp_host_len
+ || strncasecmp(dfs_host, tcp_host, dfs_host_len) != 0) {
+ cifs_dbg(FYI, "%s: %.*s doesn't match %.*s\n", __func__, (int)dfs_host_len,
+ dfs_host, (int)tcp_host_len, tcp_host);
+
+ rc = match_target_ip(server, dfs_host, dfs_host_len, &target_match);
+ if (rc) {
+ cifs_dbg(VFS, "%s: failed to match target ip: %d\n", __func__, rc);
+ break;
+ }
+
+ if (!target_match) {
+ cifs_dbg(FYI, "%s: skipping target\n", __func__);
+ continue;
+ }
+ }
+
+ if (tcon->ipc) {
+ scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", share);
+ rc = ops->tree_connect(xid, tcon->ses, tree, tcon, nlsc);
+ } else {
+ scnprintf(tree, MAX_TREE_SIZE, "\\%s", share);
+ rc = ops->tree_connect(xid, tcon->ses, tree, tcon, nlsc);
+ /* Only handle prefix paths of DFS link targets */
+ if (!rc && !isroot) {
+ rc = update_super_prepath(tcon, prefix);
+ break;
+ }
+ }
+ if (rc == -EREMOTE)
+ break;
+ }
+
+ kfree(share);
+ kfree(prefix);
+
+ if (!rc) {
+ if (it)
+ rc = dfs_cache_noreq_update_tgthint(tcon->dfs_path + 1, it);
+ else
+ rc = -ENOENT;
+ }
+ dfs_cache_free_tgts(&tl);
+out:
+ kfree(tree);
+ return rc;
+}
+#else
+int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const struct nls_table *nlsc)
+{
+ const struct smb_version_operations *ops = tcon->ses->server->ops;
+
+ return ops->tree_connect(xid, tcon->ses, tcon->treeName, tcon, nlsc);
+}
+#endif
diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
index cf6cec5..7b6db27 100644
--- a/fs/cifs/dfs_cache.c
+++ b/fs/cifs/dfs_cache.c
@@ -5,11 +5,10 @@
* Copyright (c) 2018-2019 Paulo Alcantara <palcantara@suse.de>
*/
-#include <linux/rcupdate.h>
-#include <linux/rculist.h>
#include <linux/jhash.h>
#include <linux/ktime.h>
#include <linux/slab.h>
+#include <linux/proc_fs.h>
#include <linux/nls.h>
#include <linux/workqueue.h>
#include "cifsglob.h"
@@ -22,67 +21,69 @@
#include "dfs_cache.h"
-#define DFS_CACHE_HTABLE_SIZE 32
-#define DFS_CACHE_MAX_ENTRIES 64
+#define CACHE_HTABLE_SIZE 32
+#define CACHE_MAX_ENTRIES 64
#define IS_INTERLINK_SET(v) ((v) & (DFSREF_REFERRAL_SERVER | \
DFSREF_STORAGE_SERVER))
-struct dfs_cache_tgt {
- char *t_name;
- struct list_head t_list;
+struct cache_dfs_tgt {
+ char *name;
+ int path_consumed;
+ struct list_head list;
};
-struct dfs_cache_entry {
- struct hlist_node ce_hlist;
- const char *ce_path;
- int ce_ttl;
- int ce_srvtype;
- int ce_flags;
- struct timespec64 ce_etime;
- int ce_path_consumed;
- int ce_numtgts;
- struct list_head ce_tlist;
- struct dfs_cache_tgt *ce_tgthint;
- struct rcu_head ce_rcu;
+struct cache_entry {
+ struct hlist_node hlist;
+ const char *path;
+ int ttl;
+ int srvtype;
+ int flags;
+ struct timespec64 etime;
+ int path_consumed;
+ int numtgts;
+ struct list_head tlist;
+ struct cache_dfs_tgt *tgthint;
};
-static struct kmem_cache *dfs_cache_slab __read_mostly;
-
-struct dfs_cache_vol_info {
- char *vi_fullpath;
- struct smb_vol vi_vol;
- char *vi_mntdata;
- struct list_head vi_list;
+struct vol_info {
+ char *fullpath;
+ spinlock_t smb_vol_lock;
+ struct smb_vol smb_vol;
+ char *mntdata;
+ struct list_head list;
+ struct list_head rlist;
+ struct kref refcnt;
};
-struct dfs_cache {
- struct mutex dc_lock;
- struct nls_table *dc_nlsc;
- struct list_head dc_vol_list;
- int dc_ttl;
- struct delayed_work dc_refresh;
-};
+static struct kmem_cache *cache_slab __read_mostly;
+static struct workqueue_struct *dfscache_wq __read_mostly;
-static struct dfs_cache dfs_cache;
+static int cache_ttl;
+static DEFINE_SPINLOCK(cache_ttl_lock);
+
+static struct nls_table *cache_nlsc;
/*
* Number of entries in the cache
*/
-static size_t dfs_cache_count;
+static atomic_t cache_count;
-static DEFINE_MUTEX(dfs_cache_list_lock);
-static struct hlist_head dfs_cache_htable[DFS_CACHE_HTABLE_SIZE];
+static struct hlist_head cache_htable[CACHE_HTABLE_SIZE];
+static DECLARE_RWSEM(htable_rw_lock);
+
+static LIST_HEAD(vol_list);
+static DEFINE_SPINLOCK(vol_list_lock);
static void refresh_cache_worker(struct work_struct *work);
-static inline bool is_path_valid(const char *path)
-{
- return path && (strchr(path + 1, '\\') || strchr(path + 1, '/'));
-}
+static DECLARE_DELAYED_WORK(refresh_task, refresh_cache_worker);
-static inline int get_normalized_path(const char *path, char **npath)
+static int get_normalized_path(const char *path, char **npath)
{
+ if (!path || strlen(path) < 3 || (*path != '\\' && *path != '/'))
+ return -EINVAL;
+
if (*path == '\\') {
*npath = (char *)path;
} else {
@@ -100,57 +101,48 @@
kfree(npath);
}
-static inline bool cache_entry_expired(const struct dfs_cache_entry *ce)
+static inline bool cache_entry_expired(const struct cache_entry *ce)
{
struct timespec64 ts;
ktime_get_coarse_real_ts64(&ts);
- return timespec64_compare(&ts, &ce->ce_etime) >= 0;
+ return timespec64_compare(&ts, &ce->etime) >= 0;
}
-static inline void free_tgts(struct dfs_cache_entry *ce)
+static inline void free_tgts(struct cache_entry *ce)
{
- struct dfs_cache_tgt *t, *n;
+ struct cache_dfs_tgt *t, *n;
- list_for_each_entry_safe(t, n, &ce->ce_tlist, t_list) {
- list_del(&t->t_list);
- kfree(t->t_name);
+ list_for_each_entry_safe(t, n, &ce->tlist, list) {
+ list_del(&t->list);
+ kfree(t->name);
kfree(t);
}
}
-static void free_cache_entry(struct rcu_head *rcu)
+static inline void flush_cache_ent(struct cache_entry *ce)
{
- struct dfs_cache_entry *ce = container_of(rcu, struct dfs_cache_entry,
- ce_rcu);
- kmem_cache_free(dfs_cache_slab, ce);
-}
-
-static inline void flush_cache_ent(struct dfs_cache_entry *ce)
-{
- if (hlist_unhashed(&ce->ce_hlist))
- return;
-
- hlist_del_init_rcu(&ce->ce_hlist);
- kfree_const(ce->ce_path);
+ hlist_del_init(&ce->hlist);
+ kfree(ce->path);
free_tgts(ce);
- dfs_cache_count--;
- call_rcu(&ce->ce_rcu, free_cache_entry);
+ atomic_dec(&cache_count);
+ kmem_cache_free(cache_slab, ce);
}
static void flush_cache_ents(void)
{
int i;
- rcu_read_lock();
- for (i = 0; i < DFS_CACHE_HTABLE_SIZE; i++) {
- struct hlist_head *l = &dfs_cache_htable[i];
- struct dfs_cache_entry *ce;
+ for (i = 0; i < CACHE_HTABLE_SIZE; i++) {
+ struct hlist_head *l = &cache_htable[i];
+ struct hlist_node *n;
+ struct cache_entry *ce;
- hlist_for_each_entry_rcu(ce, l, ce_hlist)
- flush_cache_ent(ce);
+ hlist_for_each_entry_safe(ce, n, l, hlist) {
+ if (!hlist_unhashed(&ce->hlist))
+ flush_cache_ent(ce);
+ }
}
- rcu_read_unlock();
}
/*
@@ -158,36 +150,39 @@
*/
static int dfscache_proc_show(struct seq_file *m, void *v)
{
- int bucket;
- struct dfs_cache_entry *ce;
- struct dfs_cache_tgt *t;
+ int i;
+ struct cache_entry *ce;
+ struct cache_dfs_tgt *t;
seq_puts(m, "DFS cache\n---------\n");
- mutex_lock(&dfs_cache_list_lock);
+ down_read(&htable_rw_lock);
+ for (i = 0; i < CACHE_HTABLE_SIZE; i++) {
+ struct hlist_head *l = &cache_htable[i];
- rcu_read_lock();
- hash_for_each_rcu(dfs_cache_htable, bucket, ce, ce_hlist) {
- seq_printf(m,
- "cache entry: path=%s,type=%s,ttl=%d,etime=%ld,"
- "interlink=%s,path_consumed=%d,expired=%s\n",
- ce->ce_path,
- ce->ce_srvtype == DFS_TYPE_ROOT ? "root" : "link",
- ce->ce_ttl, ce->ce_etime.tv_nsec,
- IS_INTERLINK_SET(ce->ce_flags) ? "yes" : "no",
- ce->ce_path_consumed,
- cache_entry_expired(ce) ? "yes" : "no");
+ hlist_for_each_entry(ce, l, hlist) {
+ if (hlist_unhashed(&ce->hlist))
+ continue;
- list_for_each_entry(t, &ce->ce_tlist, t_list) {
- seq_printf(m, " %s%s\n",
- t->t_name,
- ce->ce_tgthint == t ? " (target hint)" : "");
+ seq_printf(m,
+ "cache entry: path=%s,type=%s,ttl=%d,etime=%ld,"
+ "interlink=%s,path_consumed=%d,expired=%s\n",
+ ce->path,
+ ce->srvtype == DFS_TYPE_ROOT ? "root" : "link",
+ ce->ttl, ce->etime.tv_nsec,
+ IS_INTERLINK_SET(ce->flags) ? "yes" : "no",
+ ce->path_consumed,
+ cache_entry_expired(ce) ? "yes" : "no");
+
+ list_for_each_entry(t, &ce->tlist, list) {
+ seq_printf(m, " %s%s\n",
+ t->name,
+ ce->tgthint == t ? " (target hint)" : "");
+ }
}
-
}
- rcu_read_unlock();
+ up_read(&htable_rw_lock);
- mutex_unlock(&dfs_cache_list_lock);
return 0;
}
@@ -204,10 +199,11 @@
if (c != '0')
return -EINVAL;
- cifs_dbg(FYI, "clearing dfs cache");
- mutex_lock(&dfs_cache_list_lock);
+ cifs_dbg(FYI, "clearing dfs cache\n");
+
+ down_write(&htable_rw_lock);
flush_cache_ents();
- mutex_unlock(&dfs_cache_list_lock);
+ up_write(&htable_rw_lock);
return count;
}
@@ -217,34 +213,34 @@
return single_open(file, dfscache_proc_show, NULL);
}
-const struct file_operations dfscache_proc_fops = {
- .open = dfscache_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = dfscache_proc_write,
+const struct proc_ops dfscache_proc_ops = {
+ .proc_open = dfscache_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+ .proc_write = dfscache_proc_write,
};
#ifdef CONFIG_CIFS_DEBUG2
-static inline void dump_tgts(const struct dfs_cache_entry *ce)
+static inline void dump_tgts(const struct cache_entry *ce)
{
- struct dfs_cache_tgt *t;
+ struct cache_dfs_tgt *t;
cifs_dbg(FYI, "target list:\n");
- list_for_each_entry(t, &ce->ce_tlist, t_list) {
- cifs_dbg(FYI, " %s%s\n", t->t_name,
- ce->ce_tgthint == t ? " (target hint)" : "");
+ list_for_each_entry(t, &ce->tlist, list) {
+ cifs_dbg(FYI, " %s%s\n", t->name,
+ ce->tgthint == t ? " (target hint)" : "");
}
}
-static inline void dump_ce(const struct dfs_cache_entry *ce)
+static inline void dump_ce(const struct cache_entry *ce)
{
- cifs_dbg(FYI, "cache entry: path=%s,type=%s,ttl=%d,etime=%ld,"
- "interlink=%s,path_consumed=%d,expired=%s\n", ce->ce_path,
- ce->ce_srvtype == DFS_TYPE_ROOT ? "root" : "link", ce->ce_ttl,
- ce->ce_etime.tv_nsec,
- IS_INTERLINK_SET(ce->ce_flags) ? "yes" : "no",
- ce->ce_path_consumed,
+ cifs_dbg(FYI, "cache entry: path=%s,type=%s,ttl=%d,etime=%ld,interlink=%s,path_consumed=%d,expired=%s\n",
+ ce->path,
+ ce->srvtype == DFS_TYPE_ROOT ? "root" : "link", ce->ttl,
+ ce->etime.tv_nsec,
+ IS_INTERLINK_SET(ce->flags) ? "yes" : "no",
+ ce->path_consumed,
cache_entry_expired(ce) ? "yes" : "no");
dump_tgts(ce);
}
@@ -284,25 +280,34 @@
*/
int dfs_cache_init(void)
{
+ int rc;
int i;
- dfs_cache_slab = kmem_cache_create("cifs_dfs_cache",
- sizeof(struct dfs_cache_entry), 0,
- SLAB_HWCACHE_ALIGN, NULL);
- if (!dfs_cache_slab)
+ dfscache_wq = alloc_workqueue("cifs-dfscache",
+ WQ_FREEZABLE | WQ_MEM_RECLAIM, 1);
+ if (!dfscache_wq)
return -ENOMEM;
- for (i = 0; i < DFS_CACHE_HTABLE_SIZE; i++)
- INIT_HLIST_HEAD(&dfs_cache_htable[i]);
+ cache_slab = kmem_cache_create("cifs_dfs_cache",
+ sizeof(struct cache_entry), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (!cache_slab) {
+ rc = -ENOMEM;
+ goto out_destroy_wq;
+ }
- INIT_LIST_HEAD(&dfs_cache.dc_vol_list);
- mutex_init(&dfs_cache.dc_lock);
- INIT_DELAYED_WORK(&dfs_cache.dc_refresh, refresh_cache_worker);
- dfs_cache.dc_ttl = -1;
- dfs_cache.dc_nlsc = load_nls_default();
+ for (i = 0; i < CACHE_HTABLE_SIZE; i++)
+ INIT_HLIST_HEAD(&cache_htable[i]);
+
+ atomic_set(&cache_count, 0);
+ cache_nlsc = load_nls_default();
cifs_dbg(FYI, "%s: initialized DFS referral cache\n", __func__);
return 0;
+
+out_destroy_wq:
+ destroy_workqueue(dfscache_wq);
+ return rc;
}
static inline unsigned int cache_entry_hash(const void *data, int size)
@@ -310,7 +315,7 @@
unsigned int h;
h = jhash(data, size, 0);
- return h & (DFS_CACHE_HTABLE_SIZE - 1);
+ return h & (CACHE_HTABLE_SIZE - 1);
}
/* Check whether second path component of @path is SYSVOL or NETLOGON */
@@ -325,11 +330,11 @@
}
/* Return target hint of a DFS cache entry */
-static inline char *get_tgt_name(const struct dfs_cache_entry *ce)
+static inline char *get_tgt_name(const struct cache_entry *ce)
{
- struct dfs_cache_tgt *t = ce->ce_tgthint;
+ struct cache_dfs_tgt *t = ce->tgthint;
- return t ? t->t_name : ERR_PTR(-ENOENT);
+ return t ? t->name : ERR_PTR(-ENOENT);
}
/* Return expire time out of a new entry's TTL */
@@ -346,19 +351,20 @@
}
/* Allocate a new DFS target */
-static inline struct dfs_cache_tgt *alloc_tgt(const char *name)
+static struct cache_dfs_tgt *alloc_target(const char *name, int path_consumed)
{
- struct dfs_cache_tgt *t;
+ struct cache_dfs_tgt *t;
- t = kmalloc(sizeof(*t), GFP_KERNEL);
+ t = kmalloc(sizeof(*t), GFP_ATOMIC);
if (!t)
return ERR_PTR(-ENOMEM);
- t->t_name = kstrndup(name, strlen(name), GFP_KERNEL);
- if (!t->t_name) {
+ t->name = kstrndup(name, strlen(name), GFP_ATOMIC);
+ if (!t->name) {
kfree(t);
return ERR_PTR(-ENOMEM);
}
- INIT_LIST_HEAD(&t->t_list);
+ t->path_consumed = path_consumed;
+ INIT_LIST_HEAD(&t->list);
return t;
}
@@ -367,180 +373,241 @@
* target hint.
*/
static int copy_ref_data(const struct dfs_info3_param *refs, int numrefs,
- struct dfs_cache_entry *ce, const char *tgthint)
+ struct cache_entry *ce, const char *tgthint)
{
int i;
- ce->ce_ttl = refs[0].ttl;
- ce->ce_etime = get_expire_time(ce->ce_ttl);
- ce->ce_srvtype = refs[0].server_type;
- ce->ce_flags = refs[0].ref_flag;
- ce->ce_path_consumed = refs[0].path_consumed;
+ ce->ttl = refs[0].ttl;
+ ce->etime = get_expire_time(ce->ttl);
+ ce->srvtype = refs[0].server_type;
+ ce->flags = refs[0].ref_flag;
+ ce->path_consumed = refs[0].path_consumed;
for (i = 0; i < numrefs; i++) {
- struct dfs_cache_tgt *t;
+ struct cache_dfs_tgt *t;
- t = alloc_tgt(refs[i].node_name);
+ t = alloc_target(refs[i].node_name, refs[i].path_consumed);
if (IS_ERR(t)) {
free_tgts(ce);
return PTR_ERR(t);
}
- if (tgthint && !strcasecmp(t->t_name, tgthint)) {
- list_add(&t->t_list, &ce->ce_tlist);
+ if (tgthint && !strcasecmp(t->name, tgthint)) {
+ list_add(&t->list, &ce->tlist);
tgthint = NULL;
} else {
- list_add_tail(&t->t_list, &ce->ce_tlist);
+ list_add_tail(&t->list, &ce->tlist);
}
- ce->ce_numtgts++;
+ ce->numtgts++;
}
- ce->ce_tgthint = list_first_entry_or_null(&ce->ce_tlist,
- struct dfs_cache_tgt, t_list);
+ ce->tgthint = list_first_entry_or_null(&ce->tlist,
+ struct cache_dfs_tgt, list);
return 0;
}
/* Allocate a new cache entry */
-static struct dfs_cache_entry *
-alloc_cache_entry(const char *path, const struct dfs_info3_param *refs,
- int numrefs)
+static struct cache_entry *alloc_cache_entry(const char *path,
+ const struct dfs_info3_param *refs,
+ int numrefs)
{
- struct dfs_cache_entry *ce;
+ struct cache_entry *ce;
int rc;
- ce = kmem_cache_zalloc(dfs_cache_slab, GFP_KERNEL);
+ ce = kmem_cache_zalloc(cache_slab, GFP_KERNEL);
if (!ce)
return ERR_PTR(-ENOMEM);
- ce->ce_path = kstrdup_const(path, GFP_KERNEL);
- if (!ce->ce_path) {
- kmem_cache_free(dfs_cache_slab, ce);
+ ce->path = kstrndup(path, strlen(path), GFP_KERNEL);
+ if (!ce->path) {
+ kmem_cache_free(cache_slab, ce);
return ERR_PTR(-ENOMEM);
}
- INIT_HLIST_NODE(&ce->ce_hlist);
- INIT_LIST_HEAD(&ce->ce_tlist);
+ INIT_HLIST_NODE(&ce->hlist);
+ INIT_LIST_HEAD(&ce->tlist);
rc = copy_ref_data(refs, numrefs, ce, NULL);
if (rc) {
- kfree_const(ce->ce_path);
- kmem_cache_free(dfs_cache_slab, ce);
+ kfree(ce->path);
+ kmem_cache_free(cache_slab, ce);
ce = ERR_PTR(rc);
}
return ce;
}
+/* Must be called with htable_rw_lock held */
static void remove_oldest_entry(void)
{
- int bucket;
- struct dfs_cache_entry *ce;
- struct dfs_cache_entry *to_del = NULL;
+ int i;
+ struct cache_entry *ce;
+ struct cache_entry *to_del = NULL;
- rcu_read_lock();
- hash_for_each_rcu(dfs_cache_htable, bucket, ce, ce_hlist) {
- if (!to_del || timespec64_compare(&ce->ce_etime,
- &to_del->ce_etime) < 0)
- to_del = ce;
+ for (i = 0; i < CACHE_HTABLE_SIZE; i++) {
+ struct hlist_head *l = &cache_htable[i];
+
+ hlist_for_each_entry(ce, l, hlist) {
+ if (hlist_unhashed(&ce->hlist))
+ continue;
+ if (!to_del || timespec64_compare(&ce->etime,
+ &to_del->etime) < 0)
+ to_del = ce;
+ }
}
+
if (!to_del) {
- cifs_dbg(FYI, "%s: no entry to remove", __func__);
- goto out;
+ cifs_dbg(FYI, "%s: no entry to remove\n", __func__);
+ return;
}
- cifs_dbg(FYI, "%s: removing entry", __func__);
+
+ cifs_dbg(FYI, "%s: removing entry\n", __func__);
dump_ce(to_del);
flush_cache_ent(to_del);
-out:
- rcu_read_unlock();
}
/* Add a new DFS cache entry */
-static inline struct dfs_cache_entry *
-add_cache_entry(unsigned int hash, const char *path,
- const struct dfs_info3_param *refs, int numrefs)
+static int add_cache_entry(const char *path, unsigned int hash,
+ struct dfs_info3_param *refs, int numrefs)
{
- struct dfs_cache_entry *ce;
+ struct cache_entry *ce;
ce = alloc_cache_entry(path, refs, numrefs);
if (IS_ERR(ce))
- return ce;
+ return PTR_ERR(ce);
- hlist_add_head_rcu(&ce->ce_hlist, &dfs_cache_htable[hash]);
-
- mutex_lock(&dfs_cache.dc_lock);
- if (dfs_cache.dc_ttl < 0) {
- dfs_cache.dc_ttl = ce->ce_ttl;
- queue_delayed_work(cifsiod_wq, &dfs_cache.dc_refresh,
- dfs_cache.dc_ttl * HZ);
+ spin_lock(&cache_ttl_lock);
+ if (!cache_ttl) {
+ cache_ttl = ce->ttl;
+ queue_delayed_work(dfscache_wq, &refresh_task, cache_ttl * HZ);
} else {
- dfs_cache.dc_ttl = min_t(int, dfs_cache.dc_ttl, ce->ce_ttl);
- mod_delayed_work(cifsiod_wq, &dfs_cache.dc_refresh,
- dfs_cache.dc_ttl * HZ);
+ cache_ttl = min_t(int, cache_ttl, ce->ttl);
+ mod_delayed_work(dfscache_wq, &refresh_task, cache_ttl * HZ);
}
- mutex_unlock(&dfs_cache.dc_lock);
+ spin_unlock(&cache_ttl_lock);
- return ce;
+ down_write(&htable_rw_lock);
+ hlist_add_head(&ce->hlist, &cache_htable[hash]);
+ dump_ce(ce);
+ up_write(&htable_rw_lock);
+
+ return 0;
}
-static struct dfs_cache_entry *__find_cache_entry(unsigned int hash,
- const char *path)
+static struct cache_entry *__lookup_cache_entry(const char *path)
{
- struct dfs_cache_entry *ce;
+ struct cache_entry *ce;
+ unsigned int h;
bool found = false;
- rcu_read_lock();
- hlist_for_each_entry_rcu(ce, &dfs_cache_htable[hash], ce_hlist) {
- if (!strcasecmp(path, ce->ce_path)) {
-#ifdef CONFIG_CIFS_DEBUG2
- char *name = get_tgt_name(ce);
+ h = cache_entry_hash(path, strlen(path));
- if (IS_ERR(name)) {
- rcu_read_unlock();
- return ERR_CAST(name);
- }
- cifs_dbg(FYI, "%s: cache hit\n", __func__);
- cifs_dbg(FYI, "%s: target hint: %s\n", __func__, name);
-#endif
+ hlist_for_each_entry(ce, &cache_htable[h], hlist) {
+ if (!strcasecmp(path, ce->path)) {
found = true;
+ dump_ce(ce);
break;
}
}
- rcu_read_unlock();
- return found ? ce : ERR_PTR(-ENOENT);
+
+ if (!found)
+ ce = ERR_PTR(-ENOENT);
+ return ce;
}
/*
* Find a DFS cache entry in hash table and optionally check prefix path against
* @path.
* Use whole path components in the match.
+ * Must be called with htable_rw_lock held.
+ *
* Return ERR_PTR(-ENOENT) if the entry is not found.
*/
-static inline struct dfs_cache_entry *find_cache_entry(const char *path,
- unsigned int *hash)
+static struct cache_entry *lookup_cache_entry(const char *path, unsigned int *hash)
{
- *hash = cache_entry_hash(path, strlen(path));
- return __find_cache_entry(*hash, path);
+ struct cache_entry *ce = ERR_PTR(-ENOENT);
+ unsigned int h;
+ int cnt = 0;
+ char *npath;
+ char *s, *e;
+ char sep;
+
+ npath = kstrndup(path, strlen(path), GFP_KERNEL);
+ if (!npath)
+ return ERR_PTR(-ENOMEM);
+
+ s = npath;
+ sep = *npath;
+ while ((s = strchr(s, sep)) && ++cnt < 3)
+ s++;
+
+ if (cnt < 3) {
+ h = cache_entry_hash(path, strlen(path));
+ ce = __lookup_cache_entry(path);
+ goto out;
+ }
+ /*
+ * Handle paths that have more than two path components and are a complete prefix of the DFS
+ * referral request path (@path).
+ *
+ * See MS-DFSC 3.2.5.5 "Receiving a Root Referral Request or Link Referral Request".
+ */
+ h = cache_entry_hash(npath, strlen(npath));
+ e = npath + strlen(npath) - 1;
+ while (e > s) {
+ char tmp;
+
+ /* skip separators */
+ while (e > s && *e == sep)
+ e--;
+ if (e == s)
+ goto out;
+
+ tmp = *(e+1);
+ *(e+1) = 0;
+
+ ce = __lookup_cache_entry(npath);
+ if (!IS_ERR(ce)) {
+ h = cache_entry_hash(npath, strlen(npath));
+ break;
+ }
+
+ *(e+1) = tmp;
+ /* backward until separator */
+ while (e > s && *e != sep)
+ e--;
+ }
+out:
+ if (hash)
+ *hash = h;
+ kfree(npath);
+ return ce;
}
-static inline void destroy_slab_cache(void)
+static void __vol_release(struct vol_info *vi)
{
- rcu_barrier();
- kmem_cache_destroy(dfs_cache_slab);
-}
-
-static inline void free_vol(struct dfs_cache_vol_info *vi)
-{
- list_del(&vi->vi_list);
- kfree(vi->vi_fullpath);
- kfree(vi->vi_mntdata);
- cifs_cleanup_volume_info_contents(&vi->vi_vol);
+ kfree(vi->fullpath);
+ kfree(vi->mntdata);
+ cifs_cleanup_volume_info_contents(&vi->smb_vol);
kfree(vi);
}
+static void vol_release(struct kref *kref)
+{
+ struct vol_info *vi = container_of(kref, struct vol_info, refcnt);
+
+ spin_lock(&vol_list_lock);
+ list_del(&vi->list);
+ spin_unlock(&vol_list_lock);
+ __vol_release(vi);
+}
+
static inline void free_vol_list(void)
{
- struct dfs_cache_vol_info *vi, *nvi;
+ struct vol_info *vi, *nvi;
- list_for_each_entry_safe(vi, nvi, &dfs_cache.dc_vol_list, vi_list)
- free_vol(vi);
+ list_for_each_entry_safe(vi, nvi, &vol_list, list) {
+ list_del_init(&vi->list);
+ __vol_release(vi);
+ }
}
/**
@@ -548,83 +615,78 @@
*/
void dfs_cache_destroy(void)
{
- cancel_delayed_work_sync(&dfs_cache.dc_refresh);
- unload_nls(dfs_cache.dc_nlsc);
+ cancel_delayed_work_sync(&refresh_task);
+ unload_nls(cache_nlsc);
free_vol_list();
- mutex_destroy(&dfs_cache.dc_lock);
-
flush_cache_ents();
- destroy_slab_cache();
- mutex_destroy(&dfs_cache_list_lock);
+ kmem_cache_destroy(cache_slab);
+ destroy_workqueue(dfscache_wq);
cifs_dbg(FYI, "%s: destroyed DFS referral cache\n", __func__);
}
-static inline struct dfs_cache_entry *
-__update_cache_entry(const char *path, const struct dfs_info3_param *refs,
- int numrefs)
+/* Must be called with htable_rw_lock held */
+static int __update_cache_entry(const char *path,
+ const struct dfs_info3_param *refs,
+ int numrefs)
{
int rc;
- unsigned int h;
- struct dfs_cache_entry *ce;
+ struct cache_entry *ce;
char *s, *th = NULL;
- ce = find_cache_entry(path, &h);
+ ce = lookup_cache_entry(path, NULL);
if (IS_ERR(ce))
- return ce;
+ return PTR_ERR(ce);
- if (ce->ce_tgthint) {
- s = ce->ce_tgthint->t_name;
- th = kstrndup(s, strlen(s), GFP_KERNEL);
+ if (ce->tgthint) {
+ s = ce->tgthint->name;
+ th = kstrndup(s, strlen(s), GFP_ATOMIC);
if (!th)
- return ERR_PTR(-ENOMEM);
+ return -ENOMEM;
}
free_tgts(ce);
- ce->ce_numtgts = 0;
+ ce->numtgts = 0;
rc = copy_ref_data(refs, numrefs, ce, th);
+
kfree(th);
- if (rc)
- ce = ERR_PTR(rc);
+ return rc;
+}
- return ce;
+static int get_dfs_referral(const unsigned int xid, struct cifs_ses *ses,
+ const struct nls_table *nls_codepage, int remap,
+ const char *path, struct dfs_info3_param **refs,
+ int *numrefs)
+{
+ cifs_dbg(FYI, "%s: get an DFS referral for %s\n", __func__, path);
+
+ if (!ses || !ses->server || !ses->server->ops->get_dfs_refer)
+ return -EOPNOTSUPP;
+ if (unlikely(!nls_codepage))
+ return -EINVAL;
+
+ *refs = NULL;
+ *numrefs = 0;
+
+ return ses->server->ops->get_dfs_refer(xid, ses, path, refs, numrefs,
+ nls_codepage, remap);
}
/* Update an expired cache entry by getting a new DFS referral from server */
-static struct dfs_cache_entry *
-update_cache_entry(const unsigned int xid, struct cifs_ses *ses,
- const struct nls_table *nls_codepage, int remap,
- const char *path, struct dfs_cache_entry *ce)
+static int update_cache_entry(const char *path,
+ const struct dfs_info3_param *refs,
+ int numrefs)
{
+
int rc;
- struct dfs_info3_param *refs = NULL;
- int numrefs = 0;
- cifs_dbg(FYI, "%s: update expired cache entry\n", __func__);
- /*
- * Check if caller provided enough parameters to update an expired
- * entry.
- */
- if (!ses || !ses->server || !ses->server->ops->get_dfs_refer)
- return ERR_PTR(-ETIME);
- if (unlikely(!nls_codepage))
- return ERR_PTR(-ETIME);
+ down_write(&htable_rw_lock);
+ rc = __update_cache_entry(path, refs, numrefs);
+ up_write(&htable_rw_lock);
- cifs_dbg(FYI, "%s: DFS referral request for %s\n", __func__, path);
-
- rc = ses->server->ops->get_dfs_refer(xid, ses, path, &refs, &numrefs,
- nls_codepage, remap);
- if (rc)
- ce = ERR_PTR(rc);
- else
- ce = __update_cache_entry(path, refs, numrefs);
-
- dump_refs(refs, numrefs);
- free_dfs_info_array(refs, numrefs);
-
- return ce;
+ return rc;
}
/*
@@ -636,95 +698,86 @@
* For interlinks, __cifs_dfs_mount() and expand_dfs_referral() are supposed to
* handle them properly.
*/
-static struct dfs_cache_entry *
-do_dfs_cache_find(const unsigned int xid, struct cifs_ses *ses,
- const struct nls_table *nls_codepage, int remap,
- const char *path, bool noreq)
+static int __dfs_cache_find(const unsigned int xid, struct cifs_ses *ses,
+ const struct nls_table *nls_codepage, int remap,
+ const char *path, bool noreq)
{
int rc;
- unsigned int h;
- struct dfs_cache_entry *ce;
- struct dfs_info3_param *nrefs;
- int numnrefs;
+ unsigned int hash;
+ struct cache_entry *ce;
+ struct dfs_info3_param *refs = NULL;
+ int numrefs = 0;
+ bool newent = false;
cifs_dbg(FYI, "%s: search path: %s\n", __func__, path);
- ce = find_cache_entry(path, &h);
- if (IS_ERR(ce)) {
- cifs_dbg(FYI, "%s: cache miss\n", __func__);
- /*
- * If @noreq is set, no requests will be sent to the server for
- * either updating or getting a new DFS referral.
- */
- if (noreq)
- return ce;
- /*
- * No cache entry was found, so check for valid parameters that
- * will be required to get a new DFS referral and then create a
- * new cache entry.
- */
- if (!ses || !ses->server || !ses->server->ops->get_dfs_refer) {
- ce = ERR_PTR(-EOPNOTSUPP);
- return ce;
- }
- if (unlikely(!nls_codepage)) {
- ce = ERR_PTR(-EINVAL);
- return ce;
- }
+ down_read(&htable_rw_lock);
- nrefs = NULL;
- numnrefs = 0;
+ ce = lookup_cache_entry(path, &hash);
- cifs_dbg(FYI, "%s: DFS referral request for %s\n", __func__,
- path);
-
- rc = ses->server->ops->get_dfs_refer(xid, ses, path, &nrefs,
- &numnrefs, nls_codepage,
- remap);
- if (rc) {
- ce = ERR_PTR(rc);
- return ce;
- }
-
- dump_refs(nrefs, numnrefs);
-
- cifs_dbg(FYI, "%s: new cache entry\n", __func__);
-
- if (dfs_cache_count >= DFS_CACHE_MAX_ENTRIES) {
- cifs_dbg(FYI, "%s: reached max cache size (%d)",
- __func__, DFS_CACHE_MAX_ENTRIES);
- remove_oldest_entry();
- }
- ce = add_cache_entry(h, path, nrefs, numnrefs);
- free_dfs_info_array(nrefs, numnrefs);
-
- if (IS_ERR(ce))
- return ce;
-
- dfs_cache_count++;
+ /*
+ * If @noreq is set, no requests will be sent to the server. Just return
+ * the cache entry.
+ */
+ if (noreq) {
+ up_read(&htable_rw_lock);
+ return PTR_ERR_OR_ZERO(ce);
}
- dump_ce(ce);
-
- /* Just return the found cache entry in case @noreq is set */
- if (noreq)
- return ce;
-
- if (cache_entry_expired(ce)) {
- cifs_dbg(FYI, "%s: expired cache entry\n", __func__);
- ce = update_cache_entry(xid, ses, nls_codepage, remap, path,
- ce);
- if (IS_ERR(ce)) {
- cifs_dbg(FYI, "%s: failed to update expired entry\n",
- __func__);
+ if (!IS_ERR(ce)) {
+ if (!cache_entry_expired(ce)) {
+ dump_ce(ce);
+ up_read(&htable_rw_lock);
+ return 0;
}
+ } else {
+ newent = true;
}
- return ce;
+
+ up_read(&htable_rw_lock);
+
+ /*
+ * No entry was found.
+ *
+ * Request a new DFS referral in order to create a new cache entry, or
+ * updating an existing one.
+ */
+ rc = get_dfs_referral(xid, ses, nls_codepage, remap, path,
+ &refs, &numrefs);
+ if (rc)
+ return rc;
+
+ dump_refs(refs, numrefs);
+
+ if (!newent) {
+ rc = update_cache_entry(path, refs, numrefs);
+ goto out_free_refs;
+ }
+
+ if (atomic_read(&cache_count) >= CACHE_MAX_ENTRIES) {
+ cifs_dbg(FYI, "%s: reached max cache size (%d)\n",
+ __func__, CACHE_MAX_ENTRIES);
+ down_write(&htable_rw_lock);
+ remove_oldest_entry();
+ up_write(&htable_rw_lock);
+ }
+
+ rc = add_cache_entry(path, hash, refs, numrefs);
+ if (!rc)
+ atomic_inc(&cache_count);
+
+out_free_refs:
+ free_dfs_info_array(refs, numrefs);
+ return rc;
}
-/* Set up a new DFS referral from a given cache entry */
-static int setup_ref(const char *path, const struct dfs_cache_entry *ce,
- struct dfs_info3_param *ref, const char *tgt)
+/*
+ * Set up a DFS referral from a given cache entry.
+ *
+ * Must be called with htable_rw_lock held.
+ */
+static int setup_referral(const char *path, struct cache_entry *ce,
+ struct dfs_info3_param *ref, const char *target)
{
int rc;
@@ -732,21 +785,20 @@
memset(ref, 0, sizeof(*ref));
- ref->path_name = kstrndup(path, strlen(path), GFP_KERNEL);
+ ref->path_name = kstrndup(path, strlen(path), GFP_ATOMIC);
if (!ref->path_name)
return -ENOMEM;
- ref->path_consumed = ce->ce_path_consumed;
-
- ref->node_name = kstrndup(tgt, strlen(tgt), GFP_KERNEL);
+ ref->node_name = kstrndup(target, strlen(target), GFP_ATOMIC);
if (!ref->node_name) {
rc = -ENOMEM;
goto err_free_path;
}
- ref->ttl = ce->ce_ttl;
- ref->server_type = ce->ce_srvtype;
- ref->ref_flag = ce->ce_flags;
+ ref->path_consumed = ce->path_consumed;
+ ref->ttl = ce->ttl;
+ ref->server_type = ce->srvtype;
+ ref->ref_flag = ce->flags;
return 0;
@@ -757,38 +809,38 @@
}
/* Return target list of a DFS cache entry */
-static int get_tgt_list(const struct dfs_cache_entry *ce,
- struct dfs_cache_tgt_list *tl)
+static int get_targets(struct cache_entry *ce, struct dfs_cache_tgt_list *tl)
{
int rc;
struct list_head *head = &tl->tl_list;
- struct dfs_cache_tgt *t;
+ struct cache_dfs_tgt *t;
struct dfs_cache_tgt_iterator *it, *nit;
memset(tl, 0, sizeof(*tl));
INIT_LIST_HEAD(head);
- list_for_each_entry(t, &ce->ce_tlist, t_list) {
- it = kzalloc(sizeof(*it), GFP_KERNEL);
+ list_for_each_entry(t, &ce->tlist, list) {
+ it = kzalloc(sizeof(*it), GFP_ATOMIC);
if (!it) {
rc = -ENOMEM;
goto err_free_it;
}
- it->it_name = kstrndup(t->t_name, strlen(t->t_name),
- GFP_KERNEL);
+ it->it_name = kstrndup(t->name, strlen(t->name), GFP_ATOMIC);
if (!it->it_name) {
kfree(it);
rc = -ENOMEM;
goto err_free_it;
}
+ it->it_path_consumed = t->path_consumed;
- if (ce->ce_tgthint == t)
+ if (ce->tgthint == t)
list_add(&it->it_list, head);
else
list_add_tail(&it->it_list, head);
}
- tl->tl_numtgts = ce->ce_numtgts;
+
+ tl->tl_numtgts = ce->numtgts;
return 0;
@@ -829,28 +881,35 @@
{
int rc;
char *npath;
- struct dfs_cache_entry *ce;
-
- if (unlikely(!is_path_valid(path)))
- return -EINVAL;
+ struct cache_entry *ce;
rc = get_normalized_path(path, &npath);
if (rc)
return rc;
- mutex_lock(&dfs_cache_list_lock);
- ce = do_dfs_cache_find(xid, ses, nls_codepage, remap, npath, false);
- if (!IS_ERR(ce)) {
- if (ref)
- rc = setup_ref(path, ce, ref, get_tgt_name(ce));
- else
- rc = 0;
- if (!rc && tgt_list)
- rc = get_tgt_list(ce, tgt_list);
- } else {
+ rc = __dfs_cache_find(xid, ses, nls_codepage, remap, npath, false);
+ if (rc)
+ goto out_free_path;
+
+ down_read(&htable_rw_lock);
+
+ ce = lookup_cache_entry(npath, NULL);
+ if (IS_ERR(ce)) {
+ up_read(&htable_rw_lock);
rc = PTR_ERR(ce);
+ goto out_free_path;
}
- mutex_unlock(&dfs_cache_list_lock);
+
+ if (ref)
+ rc = setup_referral(path, ce, ref, get_tgt_name(ce));
+ else
+ rc = 0;
+ if (!rc && tgt_list)
+ rc = get_targets(ce, tgt_list);
+
+ up_read(&htable_rw_lock);
+
+out_free_path:
free_normalized_path(path, npath);
return rc;
}
@@ -876,31 +935,33 @@
{
int rc;
char *npath;
- struct dfs_cache_entry *ce;
-
- if (unlikely(!is_path_valid(path)))
- return -EINVAL;
+ struct cache_entry *ce;
rc = get_normalized_path(path, &npath);
if (rc)
return rc;
- mutex_lock(&dfs_cache_list_lock);
- ce = do_dfs_cache_find(0, NULL, NULL, 0, npath, true);
+ cifs_dbg(FYI, "%s: path: %s\n", __func__, npath);
+
+ down_read(&htable_rw_lock);
+
+ ce = lookup_cache_entry(npath, NULL);
if (IS_ERR(ce)) {
rc = PTR_ERR(ce);
- goto out;
+ goto out_unlock;
}
if (ref)
- rc = setup_ref(path, ce, ref, get_tgt_name(ce));
+ rc = setup_referral(path, ce, ref, get_tgt_name(ce));
else
rc = 0;
if (!rc && tgt_list)
- rc = get_tgt_list(ce, tgt_list);
-out:
- mutex_unlock(&dfs_cache_list_lock);
+ rc = get_targets(ce, tgt_list);
+
+out_unlock:
+ up_read(&htable_rw_lock);
free_normalized_path(path, npath);
+
return rc;
}
@@ -929,44 +990,46 @@
{
int rc;
char *npath;
- struct dfs_cache_entry *ce;
- struct dfs_cache_tgt *t;
-
- if (unlikely(!is_path_valid(path)))
- return -EINVAL;
+ struct cache_entry *ce;
+ struct cache_dfs_tgt *t;
rc = get_normalized_path(path, &npath);
if (rc)
return rc;
- cifs_dbg(FYI, "%s: path: %s\n", __func__, npath);
+ cifs_dbg(FYI, "%s: update target hint - path: %s\n", __func__, npath);
- mutex_lock(&dfs_cache_list_lock);
- ce = do_dfs_cache_find(xid, ses, nls_codepage, remap, npath, false);
+ rc = __dfs_cache_find(xid, ses, nls_codepage, remap, npath, false);
+ if (rc)
+ goto out_free_path;
+
+ down_write(&htable_rw_lock);
+
+ ce = lookup_cache_entry(npath, NULL);
if (IS_ERR(ce)) {
rc = PTR_ERR(ce);
- goto out;
+ goto out_unlock;
}
- rc = 0;
+ t = ce->tgthint;
- t = ce->ce_tgthint;
+ if (likely(!strcasecmp(it->it_name, t->name)))
+ goto out_unlock;
- if (likely(!strcasecmp(it->it_name, t->t_name)))
- goto out;
-
- list_for_each_entry(t, &ce->ce_tlist, t_list) {
- if (!strcasecmp(t->t_name, it->it_name)) {
- ce->ce_tgthint = t;
+ list_for_each_entry(t, &ce->tlist, list) {
+ if (!strcasecmp(t->name, it->it_name)) {
+ ce->tgthint = t;
cifs_dbg(FYI, "%s: new target hint: %s\n", __func__,
it->it_name);
break;
}
}
-out:
- mutex_unlock(&dfs_cache_list_lock);
+out_unlock:
+ up_write(&htable_rw_lock);
+out_free_path:
free_normalized_path(path, npath);
+
return rc;
}
@@ -989,10 +1052,10 @@
{
int rc;
char *npath;
- struct dfs_cache_entry *ce;
- struct dfs_cache_tgt *t;
+ struct cache_entry *ce;
+ struct cache_dfs_tgt *t;
- if (unlikely(!is_path_valid(path)) || !it)
+ if (!it)
return -EINVAL;
rc = get_normalized_path(path, &npath);
@@ -1001,33 +1064,33 @@
cifs_dbg(FYI, "%s: path: %s\n", __func__, npath);
- mutex_lock(&dfs_cache_list_lock);
+ down_write(&htable_rw_lock);
- ce = do_dfs_cache_find(0, NULL, NULL, 0, npath, true);
+ ce = lookup_cache_entry(npath, NULL);
if (IS_ERR(ce)) {
rc = PTR_ERR(ce);
- goto out;
+ goto out_unlock;
}
rc = 0;
+ t = ce->tgthint;
- t = ce->ce_tgthint;
+ if (unlikely(!strcasecmp(it->it_name, t->name)))
+ goto out_unlock;
- if (unlikely(!strcasecmp(it->it_name, t->t_name)))
- goto out;
-
- list_for_each_entry(t, &ce->ce_tlist, t_list) {
- if (!strcasecmp(t->t_name, it->it_name)) {
- ce->ce_tgthint = t;
+ list_for_each_entry(t, &ce->tlist, list) {
+ if (!strcasecmp(t->name, it->it_name)) {
+ ce->tgthint = t;
cifs_dbg(FYI, "%s: new target hint: %s\n", __func__,
it->it_name);
break;
}
}
-out:
- mutex_unlock(&dfs_cache_list_lock);
+out_unlock:
+ up_write(&htable_rw_lock);
free_normalized_path(path, npath);
+
return rc;
}
@@ -1047,13 +1110,10 @@
{
int rc;
char *npath;
- struct dfs_cache_entry *ce;
- unsigned int h;
+ struct cache_entry *ce;
if (!it || !ref)
return -EINVAL;
- if (unlikely(!is_path_valid(path)))
- return -EINVAL;
rc = get_normalized_path(path, &npath);
if (rc)
@@ -1061,21 +1121,22 @@
cifs_dbg(FYI, "%s: path: %s\n", __func__, npath);
- mutex_lock(&dfs_cache_list_lock);
+ down_read(&htable_rw_lock);
- ce = find_cache_entry(npath, &h);
+ ce = lookup_cache_entry(npath, NULL);
if (IS_ERR(ce)) {
rc = PTR_ERR(ce);
- goto out;
+ goto out_unlock;
}
cifs_dbg(FYI, "%s: target name: %s\n", __func__, it->it_name);
- rc = setup_ref(path, ce, ref, it->it_name);
+ rc = setup_referral(path, ce, ref, it->it_name);
-out:
- mutex_unlock(&dfs_cache_list_lock);
+out_unlock:
+ up_read(&htable_rw_lock);
free_normalized_path(path, npath);
+
return rc;
}
@@ -1085,7 +1146,7 @@
if (vol->username) {
new->username = kstrndup(vol->username, strlen(vol->username),
- GFP_KERNEL);
+ GFP_KERNEL);
if (!new->username)
return -ENOMEM;
}
@@ -1103,7 +1164,7 @@
}
if (vol->domainname) {
new->domainname = kstrndup(vol->domainname,
- strlen(vol->domainname), GFP_KERNEL);
+ strlen(vol->domainname), GFP_KERNEL);
if (!new->domainname)
goto err_free_unc;
}
@@ -1130,7 +1191,7 @@
err_free_unc:
kfree(new->UNC);
err_free_password:
- kzfree(new->password);
+ kfree_sensitive(new->password);
err_free_username:
kfree(new->username);
kfree(new);
@@ -1150,7 +1211,7 @@
int dfs_cache_add_vol(char *mntdata, struct smb_vol *vol, const char *fullpath)
{
int rc;
- struct dfs_cache_vol_info *vi;
+ struct vol_info *vi;
if (!vol || !fullpath || !mntdata)
return -EINVAL;
@@ -1161,38 +1222,41 @@
if (!vi)
return -ENOMEM;
- vi->vi_fullpath = kstrndup(fullpath, strlen(fullpath), GFP_KERNEL);
- if (!vi->vi_fullpath) {
+ vi->fullpath = kstrndup(fullpath, strlen(fullpath), GFP_KERNEL);
+ if (!vi->fullpath) {
rc = -ENOMEM;
goto err_free_vi;
}
- rc = dup_vol(vol, &vi->vi_vol);
+ rc = dup_vol(vol, &vi->smb_vol);
if (rc)
goto err_free_fullpath;
- vi->vi_mntdata = mntdata;
+ vi->mntdata = mntdata;
+ spin_lock_init(&vi->smb_vol_lock);
+ kref_init(&vi->refcnt);
- mutex_lock(&dfs_cache.dc_lock);
- list_add_tail(&vi->vi_list, &dfs_cache.dc_vol_list);
- mutex_unlock(&dfs_cache.dc_lock);
+ spin_lock(&vol_list_lock);
+ list_add_tail(&vi->list, &vol_list);
+ spin_unlock(&vol_list_lock);
+
return 0;
err_free_fullpath:
- kfree(vi->vi_fullpath);
+ kfree(vi->fullpath);
err_free_vi:
kfree(vi);
return rc;
}
-static inline struct dfs_cache_vol_info *find_vol(const char *fullpath)
+/* Must be called with vol_list_lock held */
+static struct vol_info *find_vol(const char *fullpath)
{
- struct dfs_cache_vol_info *vi;
+ struct vol_info *vi;
- list_for_each_entry(vi, &dfs_cache.dc_vol_list, vi_list) {
- cifs_dbg(FYI, "%s: vi->vi_fullpath: %s\n", __func__,
- vi->vi_fullpath);
- if (!strcasecmp(vi->vi_fullpath, fullpath))
+ list_for_each_entry(vi, &vol_list, list) {
+ cifs_dbg(FYI, "%s: vi->fullpath: %s\n", __func__, vi->fullpath);
+ if (!strcasecmp(vi->fullpath, fullpath))
return vi;
}
return ERR_PTR(-ENOENT);
@@ -1208,30 +1272,31 @@
*/
int dfs_cache_update_vol(const char *fullpath, struct TCP_Server_Info *server)
{
- int rc;
- struct dfs_cache_vol_info *vi;
+ struct vol_info *vi;
if (!fullpath || !server)
return -EINVAL;
cifs_dbg(FYI, "%s: fullpath: %s\n", __func__, fullpath);
- mutex_lock(&dfs_cache.dc_lock);
-
+ spin_lock(&vol_list_lock);
vi = find_vol(fullpath);
if (IS_ERR(vi)) {
- rc = PTR_ERR(vi);
- goto out;
+ spin_unlock(&vol_list_lock);
+ return PTR_ERR(vi);
}
+ kref_get(&vi->refcnt);
+ spin_unlock(&vol_list_lock);
cifs_dbg(FYI, "%s: updating volume info\n", __func__);
- memcpy(&vi->vi_vol.dstaddr, &server->dstaddr,
- sizeof(vi->vi_vol.dstaddr));
- rc = 0;
+ spin_lock(&vi->smb_vol_lock);
+ memcpy(&vi->smb_vol.dstaddr, &server->dstaddr,
+ sizeof(vi->smb_vol.dstaddr));
+ spin_unlock(&vi->smb_vol_lock);
-out:
- mutex_unlock(&dfs_cache.dc_lock);
- return rc;
+ kref_put(&vi->refcnt, vol_release);
+
+ return 0;
}
/**
@@ -1241,18 +1306,85 @@
*/
void dfs_cache_del_vol(const char *fullpath)
{
- struct dfs_cache_vol_info *vi;
+ struct vol_info *vi;
if (!fullpath || !*fullpath)
return;
cifs_dbg(FYI, "%s: fullpath: %s\n", __func__, fullpath);
- mutex_lock(&dfs_cache.dc_lock);
+ spin_lock(&vol_list_lock);
vi = find_vol(fullpath);
+ spin_unlock(&vol_list_lock);
+
if (!IS_ERR(vi))
- free_vol(vi);
- mutex_unlock(&dfs_cache.dc_lock);
+ kref_put(&vi->refcnt, vol_release);
+}
+
+/**
+ * dfs_cache_get_tgt_share - parse a DFS target
+ *
+ * @path: DFS full path
+ * @it: DFS target iterator.
+ * @share: tree name.
+ * @prefix: prefix path.
+ *
+ * Return zero if target was parsed correctly, otherwise non-zero.
+ */
+int dfs_cache_get_tgt_share(char *path, const struct dfs_cache_tgt_iterator *it,
+ char **share, char **prefix)
+{
+ char *s, sep, *p;
+ size_t len;
+ size_t plen1, plen2;
+
+ if (!it || !path || !share || !prefix || strlen(path) < it->it_path_consumed)
+ return -EINVAL;
+
+ *share = NULL;
+ *prefix = NULL;
+
+ sep = it->it_name[0];
+ if (sep != '\\' && sep != '/')
+ return -EINVAL;
+
+ s = strchr(it->it_name + 1, sep);
+ if (!s)
+ return -EINVAL;
+
+ /* point to prefix in target node */
+ s = strchrnul(s + 1, sep);
+
+ /* extract target share */
+ *share = kstrndup(it->it_name, s - it->it_name, GFP_KERNEL);
+ if (!*share)
+ return -ENOMEM;
+
+ /* skip separator */
+ if (*s)
+ s++;
+ /* point to prefix in DFS path */
+ p = path + it->it_path_consumed;
+ if (*p == sep)
+ p++;
+
+ /* merge prefix paths from DFS path and target node */
+ plen1 = it->it_name + strlen(it->it_name) - s;
+ plen2 = path + strlen(path) - p;
+ if (plen1 || plen2) {
+ len = plen1 + plen2 + 2;
+ *prefix = kmalloc(len, GFP_KERNEL);
+ if (!*prefix) {
+ kfree(*share);
+ *share = NULL;
+ return -ENOMEM;
+ }
+ if (plen1)
+ scnprintf(*prefix, len, "%.*s%c%.*s", (int)plen1, s, sep, (int)plen2, p);
+ else
+ strscpy(*prefix, p, len);
+ }
+ return 0;
}
/* Get all tcons that are within a DFS namespace and can be refreshed */
@@ -1280,7 +1412,7 @@
spin_unlock(&cifs_tcp_ses_lock);
}
-static inline bool is_dfs_link(const char *path)
+static bool is_dfs_link(const char *path)
{
char *s;
@@ -1290,7 +1422,7 @@
return !!strchr(s + 1, '\\');
}
-static inline char *get_dfs_root(const char *path)
+static char *get_dfs_root(const char *path)
{
char *s, *npath;
@@ -1309,12 +1441,38 @@
return npath;
}
+static inline void put_tcp_server(struct TCP_Server_Info *server)
+{
+ cifs_put_tcp_session(server, 0);
+}
+
+static struct TCP_Server_Info *get_tcp_server(struct smb_vol *vol)
+{
+ struct TCP_Server_Info *server;
+
+ server = cifs_find_tcp_session(vol);
+ if (IS_ERR_OR_NULL(server))
+ return NULL;
+
+ spin_lock(&GlobalMid_Lock);
+ if (server->tcpStatus != CifsGood) {
+ spin_unlock(&GlobalMid_Lock);
+ put_tcp_server(server);
+ return NULL;
+ }
+ spin_unlock(&GlobalMid_Lock);
+
+ return server;
+}
+
/* Find root SMB session out of a DFS link path */
-static struct cifs_ses *find_root_ses(struct dfs_cache_vol_info *vi,
- struct cifs_tcon *tcon, const char *path)
+static struct cifs_ses *find_root_ses(struct vol_info *vi,
+ struct cifs_tcon *tcon,
+ const char *path)
{
char *rpath;
int rc;
+ struct cache_entry *ce;
struct dfs_info3_param ref = {0};
char *mdata = NULL, *devname = NULL;
struct TCP_Server_Info *server;
@@ -1325,15 +1483,25 @@
if (IS_ERR(rpath))
return ERR_CAST(rpath);
- memset(&vol, 0, sizeof(vol));
+ down_read(&htable_rw_lock);
- rc = dfs_cache_noreq_find(rpath, &ref, NULL);
+ ce = lookup_cache_entry(rpath, NULL);
+ if (IS_ERR(ce)) {
+ up_read(&htable_rw_lock);
+ ses = ERR_CAST(ce);
+ goto out;
+ }
+
+ rc = setup_referral(path, ce, &ref, get_tgt_name(ce));
if (rc) {
+ up_read(&htable_rw_lock);
ses = ERR_PTR(rc);
goto out;
}
- mdata = cifs_compose_mount_options(vi->vi_mntdata, rpath, &ref,
+ up_read(&htable_rw_lock);
+
+ mdata = cifs_compose_mount_options(vi->mntdata, rpath, &ref,
&devname);
free_dfs_info_param(&ref);
@@ -1351,13 +1519,8 @@
goto out;
}
- server = cifs_find_tcp_session(&vol);
- if (IS_ERR_OR_NULL(server)) {
- ses = ERR_PTR(-EHOSTDOWN);
- goto out;
- }
- if (server->tcpStatus != CifsGood) {
- cifs_put_tcp_session(server, 0);
+ server = get_tcp_server(&vol);
+ if (!server) {
ses = ERR_PTR(-EHOSTDOWN);
goto out;
}
@@ -1373,17 +1536,15 @@
}
/* Refresh DFS cache entry from a given tcon */
-static void do_refresh_tcon(struct dfs_cache *dc, struct dfs_cache_vol_info *vi,
- struct cifs_tcon *tcon)
+static int refresh_tcon(struct vol_info *vi, struct cifs_tcon *tcon)
{
int rc = 0;
unsigned int xid;
char *path, *npath;
- unsigned int h;
- struct dfs_cache_entry *ce;
+ struct cache_entry *ce;
+ struct cifs_ses *root_ses = NULL, *ses;
struct dfs_info3_param *refs = NULL;
int numrefs = 0;
- struct cifs_ses *root_ses = NULL, *ses;
xid = get_xid();
@@ -1391,19 +1552,23 @@
rc = get_normalized_path(path, &npath);
if (rc)
- goto out;
+ goto out_free_xid;
- mutex_lock(&dfs_cache_list_lock);
- ce = find_cache_entry(npath, &h);
- mutex_unlock(&dfs_cache_list_lock);
+ down_read(&htable_rw_lock);
+ ce = lookup_cache_entry(npath, NULL);
if (IS_ERR(ce)) {
rc = PTR_ERR(ce);
- goto out;
+ up_read(&htable_rw_lock);
+ goto out_free_path;
}
- if (!cache_entry_expired(ce))
- goto out;
+ if (!cache_entry_expired(ce)) {
+ up_read(&htable_rw_lock);
+ goto out_free_path;
+ }
+
+ up_read(&htable_rw_lock);
/* If it's a DFS Link, then use root SMB session for refreshing it */
if (is_dfs_link(npath)) {
@@ -1411,35 +1576,29 @@
if (IS_ERR(ses)) {
rc = PTR_ERR(ses);
root_ses = NULL;
- goto out;
+ goto out_free_path;
}
} else {
ses = tcon->ses;
}
- if (unlikely(!ses->server->ops->get_dfs_refer)) {
- rc = -EOPNOTSUPP;
- } else {
- rc = ses->server->ops->get_dfs_refer(xid, ses, path, &refs,
- &numrefs, dc->dc_nlsc,
- tcon->remap);
- if (!rc) {
- mutex_lock(&dfs_cache_list_lock);
- ce = __update_cache_entry(npath, refs, numrefs);
- mutex_unlock(&dfs_cache_list_lock);
- dump_refs(refs, numrefs);
- free_dfs_info_array(refs, numrefs);
- if (IS_ERR(ce))
- rc = PTR_ERR(ce);
- }
+ rc = get_dfs_referral(xid, ses, cache_nlsc, tcon->remap, npath, &refs,
+ &numrefs);
+ if (!rc) {
+ dump_refs(refs, numrefs);
+ rc = update_cache_entry(npath, refs, numrefs);
+ free_dfs_info_array(refs, numrefs);
}
-out:
if (root_ses)
cifs_put_smb_ses(root_ses);
- free_xid(xid);
+out_free_path:
free_normalized_path(path, npath);
+
+out_free_xid:
+ free_xid(xid);
+ return rc;
}
/*
@@ -1448,30 +1607,61 @@
*/
static void refresh_cache_worker(struct work_struct *work)
{
- struct dfs_cache *dc = container_of(work, struct dfs_cache,
- dc_refresh.work);
- struct dfs_cache_vol_info *vi;
+ struct vol_info *vi, *nvi;
struct TCP_Server_Info *server;
- LIST_HEAD(list);
+ LIST_HEAD(vols);
+ LIST_HEAD(tcons);
struct cifs_tcon *tcon, *ntcon;
+ int rc;
- mutex_lock(&dc->dc_lock);
-
- list_for_each_entry(vi, &dc->dc_vol_list, vi_list) {
- server = cifs_find_tcp_session(&vi->vi_vol);
- if (IS_ERR_OR_NULL(server))
+ /*
+ * Find SMB volumes that are eligible (server->tcpStatus == CifsGood)
+ * for refreshing.
+ */
+ spin_lock(&vol_list_lock);
+ list_for_each_entry(vi, &vol_list, list) {
+ server = get_tcp_server(&vi->smb_vol);
+ if (!server)
continue;
- if (server->tcpStatus != CifsGood)
- goto next;
- get_tcons(server, &list);
- list_for_each_entry_safe(tcon, ntcon, &list, ulist) {
- do_refresh_tcon(dc, vi, tcon);
+
+ kref_get(&vi->refcnt);
+ list_add_tail(&vi->rlist, &vols);
+ put_tcp_server(server);
+ }
+ spin_unlock(&vol_list_lock);
+
+ /* Walk through all TCONs and refresh any expired cache entry */
+ list_for_each_entry_safe(vi, nvi, &vols, rlist) {
+ spin_lock(&vi->smb_vol_lock);
+ server = get_tcp_server(&vi->smb_vol);
+ spin_unlock(&vi->smb_vol_lock);
+
+ if (!server)
+ goto next_vol;
+
+ get_tcons(server, &tcons);
+ rc = 0;
+
+ list_for_each_entry_safe(tcon, ntcon, &tcons, ulist) {
+ /*
+ * Skip tcp server if any of its tcons failed to refresh
+ * (possibily due to reconnects).
+ */
+ if (!rc)
+ rc = refresh_tcon(vi, tcon);
+
list_del_init(&tcon->ulist);
cifs_put_tcon(tcon);
}
-next:
- cifs_put_tcp_session(server, 0);
+
+ put_tcp_server(server);
+
+next_vol:
+ list_del_init(&vi->rlist);
+ kref_put(&vi->refcnt, vol_release);
}
- queue_delayed_work(cifsiod_wq, &dc->dc_refresh, dc->dc_ttl * HZ);
- mutex_unlock(&dc->dc_lock);
+
+ spin_lock(&cache_ttl_lock);
+ queue_delayed_work(dfscache_wq, &refresh_task, cache_ttl * HZ);
+ spin_unlock(&cache_ttl_lock);
}
diff --git a/fs/cifs/dfs_cache.h b/fs/cifs/dfs_cache.h
index 76c7329..3d7c051 100644
--- a/fs/cifs/dfs_cache.h
+++ b/fs/cifs/dfs_cache.h
@@ -19,12 +19,13 @@
struct dfs_cache_tgt_iterator {
char *it_name;
+ int it_path_consumed;
struct list_head it_list;
};
extern int dfs_cache_init(void);
extern void dfs_cache_destroy(void);
-extern const struct file_operations dfscache_proc_fops;
+extern const struct proc_ops dfscache_proc_ops;
extern int dfs_cache_find(const unsigned int xid, struct cifs_ses *ses,
const struct nls_table *nls_codepage, int remap,
@@ -48,6 +49,8 @@
extern int dfs_cache_update_vol(const char *fullpath,
struct TCP_Server_Info *server);
extern void dfs_cache_del_vol(const char *fullpath);
+extern int dfs_cache_get_tgt_share(char *path, const struct dfs_cache_tgt_iterator *it,
+ char **share, char **prefix);
static inline struct dfs_cache_tgt_iterator *
dfs_cache_get_next_tgt(struct dfs_cache_tgt_list *tl,
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 9ae9a51..0d7238c 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -244,10 +244,8 @@
*oplock = REQ_OPLOCK;
full_path = build_path_from_dentry(direntry);
- if (full_path == NULL) {
- rc = -ENOMEM;
- goto out;
- }
+ if (!full_path)
+ return -ENOMEM;
if (tcon->unix_ext && cap_unix(tcon->ses) && !tcon->broken_posix_open &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
@@ -357,13 +355,10 @@
if (!tcon->unix_ext && (mode & S_IWUGO) == 0)
create_options |= CREATE_OPTION_READONLY;
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = desired_access;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, create_options);
oparms.disposition = disposition;
oparms.path = full_path;
oparms.fid = fid;
@@ -416,6 +411,7 @@
rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb,
xid);
else {
+ /* TODO: Add support for calling POSIX query info here, but passing in fid */
rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb,
xid, fid);
if (newinode) {
@@ -705,7 +701,9 @@
cifs_dbg(FYI, "Full path: %s inode = 0x%p\n",
full_path, d_inode(direntry));
- if (pTcon->unix_ext) {
+ if (pTcon->posix_extensions)
+ rc = smb311_posix_get_inode_info(&newInode, full_path, parent_dir_inode->i_sb, xid);
+ else if (pTcon->unix_ext) {
rc = cifs_get_inode_info_unix(&newInode, full_path,
parent_dir_inode->i_sb, xid);
} else {
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 1aac8d3..6c06870 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -223,9 +223,6 @@
if (!buf)
return -ENOMEM;
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
/* O_SYNC also has bit for O_DSYNC so following check picks up either */
if (f_flags & O_SYNC)
create_options |= CREATE_WRITE_THROUGH;
@@ -236,7 +233,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = desired_access;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, create_options);
oparms.disposition = disposition;
oparms.path = full_path;
oparms.fid = fid;
@@ -247,6 +244,7 @@
if (rc)
goto out;
+ /* TODO: Add support for calling posix query info but with passing in fid */
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, inode->i_sb,
xid);
@@ -497,7 +495,9 @@
unsigned int xid;
xid = get_xid();
- if (server->ops->close)
+ if (server->ops->close_getattr)
+ server->ops->close_getattr(xid, tcon, cifs_file);
+ else if (server->ops->close)
server->ops->close(xid, tcon, &cifs_file->fid);
_free_xid(xid);
}
@@ -751,9 +751,6 @@
desired_access = cifs_convert_flags(cfile->f_flags);
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
/* O_SYNC also has bit for O_DSYNC so following check picks up either */
if (cfile->f_flags & O_SYNC)
create_options |= CREATE_WRITE_THROUGH;
@@ -767,7 +764,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = desired_access;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, create_options);
oparms.disposition = disposition;
oparms.path = full_path;
oparms.fid = &cfile->fid;
@@ -805,7 +802,9 @@
if (!is_interrupt_error(rc))
mapping_set_error(inode->i_mapping, rc);
- if (tcon->unix_ext)
+ if (tcon->posix_extensions)
+ rc = smb311_posix_get_inode_info(&inode, full_path, inode->i_sb, xid);
+ else if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path,
inode->i_sb, xid);
else
@@ -862,7 +861,7 @@
tcon->need_reopen_files = false;
- cifs_dbg(FYI, "Reopen persistent handles");
+ cifs_dbg(FYI, "Reopen persistent handles\n");
INIT_LIST_HEAD(&tmp_list);
/* list all files open on tree connection, reopen resilient handles */
@@ -1151,20 +1150,20 @@
/*
* Set the byte-range lock (posix style). Returns:
- * 1) 0, if we set the lock and don't need to request to the server;
- * 2) 1, if we need to request to the server;
- * 3) <0, if the error occurs while setting the lock.
+ * 1) <0, if the error occurs while setting the lock;
+ * 2) 0, if we set the lock and don't need to request to the server;
+ * 3) FILE_LOCK_DEFERRED, if we will wait for some other file_lock;
+ * 4) FILE_LOCK_DEFERRED + 1, if we need to request to the server.
*/
static int
cifs_posix_lock_set(struct file *file, struct file_lock *flock)
{
struct cifsInodeInfo *cinode = CIFS_I(file_inode(file));
- int rc = 1;
+ int rc = FILE_LOCK_DEFERRED + 1;
if ((flock->fl_flags & FL_POSIX) == 0)
return rc;
-try_again:
cifs_down_write(&cinode->lock_sem);
if (!cinode->can_cache_brlcks) {
up_write(&cinode->lock_sem);
@@ -1173,13 +1172,6 @@
rc = posix_lock_file(file, flock, NULL);
up_write(&cinode->lock_sem);
- if (rc == FILE_LOCK_DEFERRED) {
- rc = wait_event_interruptible(flock->fl_wait,
- list_empty(&flock->fl_blocked_member));
- if (!rc)
- goto try_again;
- locks_delete_block(flock);
- }
return rc;
}
@@ -1654,7 +1646,7 @@
int posix_lock_type;
rc = cifs_posix_lock_set(file, flock);
- if (!rc || rc < 0)
+ if (rc <= FILE_LOCK_DEFERRED)
return rc;
if (type & server->vals->shared_lock_type)
@@ -1715,7 +1707,7 @@
rc = server->ops->mand_unlock_range(cfile, flock, xid);
out:
- if (flock->fl_flags & FL_POSIX) {
+ if ((flock->fl_flags & FL_POSIX) || (flock->fl_flags & FL_FLOCK)) {
/*
* If this is a request to remove all locks because we
* are closing the file, it doesn't matter if the
@@ -1732,6 +1724,52 @@
return rc;
}
+int cifs_flock(struct file *file, int cmd, struct file_lock *fl)
+{
+ int rc, xid;
+ int lock = 0, unlock = 0;
+ bool wait_flag = false;
+ bool posix_lck = false;
+ struct cifs_sb_info *cifs_sb;
+ struct cifs_tcon *tcon;
+ struct cifsFileInfo *cfile;
+ __u32 type;
+
+ rc = -EACCES;
+ xid = get_xid();
+
+ if (!(fl->fl_flags & FL_FLOCK))
+ return -ENOLCK;
+
+ cfile = (struct cifsFileInfo *)file->private_data;
+ tcon = tlink_tcon(cfile->tlink);
+
+ cifs_read_flock(fl, &type, &lock, &unlock, &wait_flag,
+ tcon->ses->server);
+ cifs_sb = CIFS_FILE_SB(file);
+
+ if (cap_unix(tcon->ses) &&
+ (CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) &&
+ ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
+ posix_lck = true;
+
+ if (!lock && !unlock) {
+ /*
+ * if no lock or unlock then nothing to do since we do not
+ * know what it is
+ */
+ free_xid(xid);
+ return -EOPNOTSUPP;
+ }
+
+ rc = cifs_setlk(file, fl, type, wait_flag, posix_lck, lock, unlock,
+ xid);
+ free_xid(xid);
+ return rc;
+
+
+}
+
int cifs_lock(struct file *file, int cmd, struct file_lock *flock)
{
int rc, xid;
@@ -1812,7 +1850,7 @@
unsigned int xid;
struct dentry *dentry = open_file->dentry;
struct cifsInodeInfo *cifsi = CIFS_I(d_inode(dentry));
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
cifs_dbg(FYI, "write %zd bytes to offset %lld of %pd\n",
write_size, *offset, dentry);
@@ -2015,7 +2053,7 @@
rc = cifs_get_writable_file(cifs_inode, flags, &cfile);
if (rc)
- cifs_dbg(FYI, "couldn't find writable handle rc=%d", rc);
+ cifs_dbg(FYI, "Couldn't find writable handle rc=%d\n", rc);
return cfile;
}
@@ -2251,8 +2289,6 @@
struct address_space *mapping, struct writeback_control *wbc)
{
int rc;
- struct TCP_Server_Info *server =
- tlink_tcon(wdata->cfile->tlink)->ses->server;
wdata->sync_mode = wbc->sync_mode;
wdata->nr_pages = nr_pages;
@@ -2264,14 +2300,15 @@
wdata->bytes = ((nr_pages - 1) * PAGE_SIZE) + wdata->tailsz;
wdata->pid = wdata->cfile->pid;
- rc = adjust_credits(server, &wdata->credits, wdata->bytes);
+ rc = adjust_credits(wdata->server, &wdata->credits, wdata->bytes);
if (rc)
return rc;
if (wdata->cfile->invalidHandle)
rc = -EAGAIN;
else
- rc = server->ops->async_writev(wdata, cifs_writedata_release);
+ rc = wdata->server->ops->async_writev(wdata,
+ cifs_writedata_release);
return rc;
}
@@ -2308,7 +2345,8 @@
range_whole = true;
scanned = true;
}
- server = cifs_sb_master_tcon(cifs_sb)->ses->server;
+ server = cifs_pick_channel(cifs_sb_master_tcon(cifs_sb)->ses);
+
retry:
while (!done && index <= end) {
unsigned int i, nr_pages, found_pages, wsize;
@@ -2362,6 +2400,7 @@
wdata->credits = credits_on_stack;
wdata->cfile = cfile;
+ wdata->server = server;
cfile = NULL;
if (!wdata->cfile) {
@@ -2558,8 +2597,10 @@
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
rc = file_write_and_wait_range(file, start, end);
- if (rc)
+ if (rc) {
+ trace_cifs_fsync_err(inode->i_ino, rc);
return rc;
+ }
xid = get_xid();
@@ -2577,12 +2618,23 @@
tcon = tlink_tcon(smbfile->tlink);
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)) {
server = tcon->ses->server;
- if (server->ops->flush)
- rc = server->ops->flush(xid, tcon, &smbfile->fid);
- else
+ if (server->ops->flush == NULL) {
rc = -ENOSYS;
+ goto strict_fsync_exit;
+ }
+
+ if ((OPEN_FMODE(smbfile->f_flags) & FMODE_WRITE) == 0) {
+ smbfile = find_writable_file(CIFS_I(inode), FIND_WR_ANY);
+ if (smbfile) {
+ rc = server->ops->flush(xid, tcon, &smbfile->fid);
+ cifsFileInfo_put(smbfile);
+ } else
+ cifs_dbg(FYI, "ignore fsync for file not open for write\n");
+ } else
+ rc = server->ops->flush(xid, tcon, &smbfile->fid);
}
+strict_fsync_exit:
free_xid(xid);
return rc;
}
@@ -2594,11 +2646,14 @@
struct cifs_tcon *tcon;
struct TCP_Server_Info *server;
struct cifsFileInfo *smbfile = file->private_data;
+ struct inode *inode = file_inode(file);
struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
rc = file_write_and_wait_range(file, start, end);
- if (rc)
+ if (rc) {
+ trace_cifs_fsync_err(file_inode(file)->i_ino, rc);
return rc;
+ }
xid = get_xid();
@@ -2608,12 +2663,23 @@
tcon = tlink_tcon(smbfile->tlink);
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)) {
server = tcon->ses->server;
- if (server->ops->flush)
- rc = server->ops->flush(xid, tcon, &smbfile->fid);
- else
+ if (server->ops->flush == NULL) {
rc = -ENOSYS;
+ goto fsync_exit;
+ }
+
+ if ((OPEN_FMODE(smbfile->f_flags) & FMODE_WRITE) == 0) {
+ smbfile = find_writable_file(CIFS_I(inode), FIND_WR_ANY);
+ if (smbfile) {
+ rc = server->ops->flush(xid, tcon, &smbfile->fid);
+ cifsFileInfo_put(smbfile);
+ } else
+ cifs_dbg(FYI, "ignore fsync for file not open for write\n");
+ } else
+ rc = server->ops->flush(xid, tcon, &smbfile->fid);
}
+fsync_exit:
free_xid(xid);
return rc;
}
@@ -2631,7 +2697,8 @@
rc = filemap_write_and_wait(inode->i_mapping);
cifs_dbg(FYI, "Flush inode %p file %p rc %d\n", inode, file, rc);
-
+ if (rc)
+ trace_cifs_flush_err(inode->i_ino, rc);
return rc;
}
@@ -2760,8 +2827,7 @@
unsigned int wsize;
struct cifs_credits credits;
int rc;
- struct TCP_Server_Info *server =
- tlink_tcon(wdata->cfile->tlink)->ses->server;
+ struct TCP_Server_Info *server = wdata->server;
do {
if (wdata->cfile->invalidHandle) {
@@ -2796,9 +2862,17 @@
if (!rc) {
if (wdata->cfile->invalidHandle)
rc = -EAGAIN;
- else
+ else {
+#ifdef CONFIG_CIFS_SMB_DIRECT
+ if (wdata->mr) {
+ wdata->mr->need_invalidate = true;
+ smbd_deregister_mr(wdata->mr);
+ wdata->mr = NULL;
+ }
+#endif
rc = server->ops->async_writev(wdata,
cifs_uncached_writedata_release);
+ }
}
/* If the write was successfully sent, we are done */
@@ -2839,7 +2913,7 @@
else
pid = current->tgid;
- server = tlink_tcon(open_file->tlink)->ses->server;
+ server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
xid = get_xid();
do {
@@ -2869,11 +2943,9 @@
from, &pagevec, cur_len, &start);
if (result < 0) {
cifs_dbg(VFS,
- "direct_writev couldn't get user pages "
- "(rc=%zd) iter type %d iov_offset %zd "
- "count %zd\n",
- result, from->type,
- from->iov_offset, from->count);
+ "direct_writev couldn't get user pages (rc=%zd) iter type %d iov_offset %zd count %zd\n",
+ result, iov_iter_type(from),
+ from->iov_offset, from->count);
dump_stack();
rc = result;
@@ -2945,6 +3017,7 @@
wdata->nr_pages = nr_pages;
wdata->offset = (__u64)offset;
wdata->cfile = cifsFileInfo_get(open_file);
+ wdata->server = server;
wdata->pid = pid;
wdata->bytes = cur_len;
wdata->pagesz = PAGE_SIZE;
@@ -2989,7 +3062,7 @@
struct cifs_tcon *tcon;
struct cifs_sb_info *cifs_sb;
struct dentry *dentry = ctx->cfile->dentry;
- int rc;
+ ssize_t rc;
tcon = tlink_tcon(ctx->cfile->tlink);
cifs_sb = CIFS_SB(dentry->d_sb);
@@ -3083,7 +3156,7 @@
* In this case, fall back to non-direct write function.
* this could be improved by getting pages directly in ITER_KVEC
*/
- if (direct && from->type & ITER_KVEC) {
+ if (direct && iov_iter_is_kvec(from)) {
cifs_dbg(FYI, "use non-direct cifs_writev for kvec I/O\n");
direct = false;
}
@@ -3486,8 +3559,10 @@
unsigned int rsize;
struct cifs_credits credits;
int rc;
- struct TCP_Server_Info *server =
- tlink_tcon(rdata->cfile->tlink)->ses->server;
+ struct TCP_Server_Info *server;
+
+ /* XXX: should we pick a new channel here? */
+ server = rdata->server;
do {
if (rdata->cfile->invalidHandle) {
@@ -3521,8 +3596,16 @@
if (!rc) {
if (rdata->cfile->invalidHandle)
rc = -EAGAIN;
- else
+ else {
+#ifdef CONFIG_CIFS_SMB_DIRECT
+ if (rdata->mr) {
+ rdata->mr->need_invalidate = true;
+ smbd_deregister_mr(rdata->mr);
+ rdata->mr = NULL;
+ }
+#endif
rc = server->ops->async_readv(rdata);
+ }
}
/* If the read was successfully sent, we are done */
@@ -3558,7 +3641,7 @@
size_t start;
struct iov_iter direct_iov = ctx->iter;
- server = tlink_tcon(open_file->tlink)->ses->server;
+ server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
@@ -3592,12 +3675,10 @@
cur_len, &start);
if (result < 0) {
cifs_dbg(VFS,
- "couldn't get user pages (rc=%zd)"
- " iter type %d"
- " iov_offset %zd count %zd\n",
- result, direct_iov.type,
- direct_iov.iov_offset,
- direct_iov.count);
+ "Couldn't get user pages (rc=%zd) iter type %d iov_offset %zd count %zd\n",
+ result, iov_iter_type(&direct_iov),
+ direct_iov.iov_offset,
+ direct_iov.count);
dump_stack();
rc = result;
@@ -3644,6 +3725,7 @@
rdata->tailsz = PAGE_SIZE;
}
+ rdata->server = server;
rdata->cfile = cifsFileInfo_get(open_file);
rdata->nr_pages = npages;
rdata->offset = offset;
@@ -3806,7 +3888,7 @@
* fall back to data copy read path
* this could be improved by getting pages directly in ITER_KVEC
*/
- if (direct && to->type & ITER_KVEC) {
+ if (direct && iov_iter_is_kvec(to)) {
cifs_dbg(FYI, "use non-direct cifs_user_readv for kvec I/O\n");
direct = false;
}
@@ -3956,7 +4038,7 @@
unsigned int xid;
char *cur_offset;
struct cifsFileInfo *open_file;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
int buf_type = CIFS_NO_BUFFER;
__u32 pid;
@@ -3973,7 +4055,7 @@
}
open_file = file->private_data;
tcon = tlink_tcon(open_file->tlink);
- server = tcon->ses->server;
+ server = cifs_pick_channel(tcon->ses);
if (!server->ops->sync_read) {
free_xid(xid);
@@ -4012,6 +4094,7 @@
io_parms.tcon = tcon;
io_parms.offset = *offset;
io_parms.length = current_read_size;
+ io_parms.server = server;
rc = server->ops->sync_read(xid, &open_file->fid, &io_parms,
&bytes_read, &cur_offset,
&buf_type);
@@ -4100,7 +4183,7 @@
for (i = 0; i < rdata->nr_pages; i++) {
struct page *page = rdata->pages[i];
- lru_cache_add_file(page);
+ lru_cache_add(page);
if (rdata->result == 0 ||
(rdata->result == -EAGAIN && got_bytes)) {
@@ -4170,7 +4253,7 @@
* fill them until the writes are flushed.
*/
zero_user(page, 0, PAGE_SIZE);
- lru_cache_add_file(page);
+ lru_cache_add(page);
flush_dcache_page(page);
SetPageUptodate(page);
unlock_page(page);
@@ -4180,7 +4263,7 @@
continue;
} else {
/* no need to hold page hostage */
- lru_cache_add_file(page);
+ lru_cache_add(page);
unlock_page(page);
put_page(page);
rdata->pages[i] = NULL;
@@ -4316,7 +4399,7 @@
pid = current->tgid;
rc = 0;
- server = tlink_tcon(open_file->tlink)->ses->server;
+ server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
cifs_dbg(FYI, "%s: file=%p mapping=%p num_pages=%u\n",
__func__, file, mapping, num_pages);
@@ -4378,7 +4461,7 @@
/* best to give up if we're out of mem */
list_for_each_entry_safe(page, tpage, &tmplist, lru) {
list_del(&page->lru);
- lru_cache_add_file(page);
+ lru_cache_add(page);
unlock_page(page);
put_page(page);
}
@@ -4388,6 +4471,7 @@
}
rdata->cfile = cifsFileInfo_get(open_file);
+ rdata->server = server;
rdata->mapping = mapping;
rdata->offset = offset;
rdata->bytes = bytes;
@@ -4416,7 +4500,7 @@
add_credits_and_wake_if(server, &rdata->credits, 0);
for (i = 0; i < rdata->nr_pages; i++) {
page = rdata->pages[i];
- lru_cache_add_file(page);
+ lru_cache_add(page);
unlock_page(page);
put_page(page);
}
@@ -4489,7 +4573,7 @@
static int cifs_readpage(struct file *file, struct page *page)
{
- loff_t offset = (loff_t)page->index << PAGE_SHIFT;
+ loff_t offset = page_file_offset(page);
int rc = -EACCES;
unsigned int xid;
@@ -4749,6 +4833,60 @@
return -EINVAL;
}
+static int cifs_swap_activate(struct swap_info_struct *sis,
+ struct file *swap_file, sector_t *span)
+{
+ struct cifsFileInfo *cfile = swap_file->private_data;
+ struct inode *inode = swap_file->f_mapping->host;
+ unsigned long blocks;
+ long long isize;
+
+ cifs_dbg(FYI, "swap activate\n");
+
+ spin_lock(&inode->i_lock);
+ blocks = inode->i_blocks;
+ isize = inode->i_size;
+ spin_unlock(&inode->i_lock);
+ if (blocks*512 < isize) {
+ pr_warn("swap activate: swapfile has holes\n");
+ return -EINVAL;
+ }
+ *span = sis->pages;
+
+ pr_warn_once("Swap support over SMB3 is experimental\n");
+
+ /*
+ * TODO: consider adding ACL (or documenting how) to prevent other
+ * users (on this or other systems) from reading it
+ */
+
+
+ /* TODO: add sk_set_memalloc(inet) or similar */
+
+ if (cfile)
+ cfile->swapfile = true;
+ /*
+ * TODO: Since file already open, we can't open with DENY_ALL here
+ * but we could add call to grab a byte range lock to prevent others
+ * from reading or writing the file
+ */
+
+ return 0;
+}
+
+static void cifs_swap_deactivate(struct file *file)
+{
+ struct cifsFileInfo *cfile = file->private_data;
+
+ cifs_dbg(FYI, "swap deactivate\n");
+
+ /* TODO: undo sk_set_memalloc(inet) will eventually be needed */
+
+ if (cfile)
+ cfile->swapfile = false;
+
+ /* do we need to unpin (or unlock) the file */
+}
const struct address_space_operations cifs_addr_ops = {
.readpage = cifs_readpage,
@@ -4762,6 +4900,13 @@
.direct_IO = cifs_direct_io,
.invalidatepage = cifs_invalidate_page,
.launder_page = cifs_launder_page,
+ /*
+ * TODO: investigate and if useful we could add an cifs_migratePage
+ * helper (under an CONFIG_MIGRATION) in the future, and also
+ * investigate and add an is_dirty_writeback helper if needed
+ */
+ .swap_activate = cifs_swap_activate,
+ .swap_deactivate = cifs_swap_deactivate,
};
/*
diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c
new file mode 100644
index 0000000..ad6c2fe
--- /dev/null
+++ b/fs/cifs/fs_context.c
@@ -0,0 +1,221 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020, Microsoft Corporation.
+ *
+ * Author(s): Steve French <stfrench@microsoft.com>
+ * David Howells <dhowells@redhat.com>
+ */
+
+#include "cifsglob.h"
+#include "cifs_debug.h"
+#include "fs_context.h"
+
+static const match_table_t cifs_smb_version_tokens = {
+ { Smb_1, SMB1_VERSION_STRING },
+ { Smb_20, SMB20_VERSION_STRING},
+ { Smb_21, SMB21_VERSION_STRING },
+ { Smb_30, SMB30_VERSION_STRING },
+ { Smb_302, SMB302_VERSION_STRING },
+ { Smb_302, ALT_SMB302_VERSION_STRING },
+ { Smb_311, SMB311_VERSION_STRING },
+ { Smb_311, ALT_SMB311_VERSION_STRING },
+ { Smb_3any, SMB3ANY_VERSION_STRING },
+ { Smb_default, SMBDEFAULT_VERSION_STRING },
+ { Smb_version_err, NULL }
+};
+
+int
+cifs_parse_smb_version(char *value, struct smb_vol *vol, bool is_smb3)
+{
+ substring_t args[MAX_OPT_ARGS];
+
+ switch (match_token(value, cifs_smb_version_tokens, args)) {
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+ case Smb_1:
+ if (disable_legacy_dialects) {
+ cifs_dbg(VFS, "mount with legacy dialect disabled\n");
+ return 1;
+ }
+ if (is_smb3) {
+ cifs_dbg(VFS, "vers=1.0 (cifs) not permitted when mounting with smb3\n");
+ return 1;
+ }
+ cifs_dbg(VFS, "Use of the less secure dialect vers=1.0 is not recommended unless required for access to very old servers\n");
+ vol->ops = &smb1_operations;
+ vol->vals = &smb1_values;
+ break;
+ case Smb_20:
+ if (disable_legacy_dialects) {
+ cifs_dbg(VFS, "mount with legacy dialect disabled\n");
+ return 1;
+ }
+ if (is_smb3) {
+ cifs_dbg(VFS, "vers=2.0 not permitted when mounting with smb3\n");
+ return 1;
+ }
+ vol->ops = &smb20_operations;
+ vol->vals = &smb20_values;
+ break;
+#else
+ case Smb_1:
+ cifs_dbg(VFS, "vers=1.0 (cifs) mount not permitted when legacy dialects disabled\n");
+ return 1;
+ case Smb_20:
+ cifs_dbg(VFS, "vers=2.0 mount not permitted when legacy dialects disabled\n");
+ return 1;
+#endif /* CIFS_ALLOW_INSECURE_LEGACY */
+ case Smb_21:
+ vol->ops = &smb21_operations;
+ vol->vals = &smb21_values;
+ break;
+ case Smb_30:
+ vol->ops = &smb30_operations;
+ vol->vals = &smb30_values;
+ break;
+ case Smb_302:
+ vol->ops = &smb30_operations; /* currently identical with 3.0 */
+ vol->vals = &smb302_values;
+ break;
+ case Smb_311:
+ vol->ops = &smb311_operations;
+ vol->vals = &smb311_values;
+ break;
+ case Smb_3any:
+ vol->ops = &smb30_operations; /* currently identical with 3.0 */
+ vol->vals = &smb3any_values;
+ break;
+ case Smb_default:
+ vol->ops = &smb30_operations; /* currently identical with 3.0 */
+ vol->vals = &smbdefault_values;
+ break;
+ default:
+ cifs_dbg(VFS, "Unknown vers= option specified: %s\n", value);
+ return 1;
+ }
+ return 0;
+}
+
+static const match_table_t cifs_secflavor_tokens = {
+ { Opt_sec_krb5, "krb5" },
+ { Opt_sec_krb5i, "krb5i" },
+ { Opt_sec_krb5p, "krb5p" },
+ { Opt_sec_ntlmsspi, "ntlmsspi" },
+ { Opt_sec_ntlmssp, "ntlmssp" },
+ { Opt_ntlm, "ntlm" },
+ { Opt_sec_ntlmi, "ntlmi" },
+ { Opt_sec_ntlmv2, "nontlm" },
+ { Opt_sec_ntlmv2, "ntlmv2" },
+ { Opt_sec_ntlmv2i, "ntlmv2i" },
+ { Opt_sec_lanman, "lanman" },
+ { Opt_sec_none, "none" },
+
+ { Opt_sec_err, NULL }
+};
+
+int cifs_parse_security_flavors(char *value, struct smb_vol *vol)
+{
+
+ substring_t args[MAX_OPT_ARGS];
+
+ /*
+ * With mount options, the last one should win. Reset any existing
+ * settings back to default.
+ */
+ vol->sectype = Unspecified;
+ vol->sign = false;
+
+ switch (match_token(value, cifs_secflavor_tokens, args)) {
+ case Opt_sec_krb5p:
+ cifs_dbg(VFS, "sec=krb5p is not supported!\n");
+ return 1;
+ case Opt_sec_krb5i:
+ vol->sign = true;
+ fallthrough;
+ case Opt_sec_krb5:
+ vol->sectype = Kerberos;
+ break;
+ case Opt_sec_ntlmsspi:
+ vol->sign = true;
+ fallthrough;
+ case Opt_sec_ntlmssp:
+ vol->sectype = RawNTLMSSP;
+ break;
+ case Opt_sec_ntlmi:
+ vol->sign = true;
+ fallthrough;
+ case Opt_ntlm:
+ vol->sectype = NTLM;
+ break;
+ case Opt_sec_ntlmv2i:
+ vol->sign = true;
+ fallthrough;
+ case Opt_sec_ntlmv2:
+ vol->sectype = NTLMv2;
+ break;
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+ case Opt_sec_lanman:
+ vol->sectype = LANMAN;
+ break;
+#endif
+ case Opt_sec_none:
+ vol->nullauth = 1;
+ break;
+ default:
+ cifs_dbg(VFS, "bad security option: %s\n", value);
+ return 1;
+ }
+
+ return 0;
+}
+
+static const match_table_t cifs_cacheflavor_tokens = {
+ { Opt_cache_loose, "loose" },
+ { Opt_cache_strict, "strict" },
+ { Opt_cache_none, "none" },
+ { Opt_cache_ro, "ro" },
+ { Opt_cache_rw, "singleclient" },
+ { Opt_cache_err, NULL }
+};
+
+int
+cifs_parse_cache_flavor(char *value, struct smb_vol *vol)
+{
+ substring_t args[MAX_OPT_ARGS];
+
+ switch (match_token(value, cifs_cacheflavor_tokens, args)) {
+ case Opt_cache_loose:
+ vol->direct_io = false;
+ vol->strict_io = false;
+ vol->cache_ro = false;
+ vol->cache_rw = false;
+ break;
+ case Opt_cache_strict:
+ vol->direct_io = false;
+ vol->strict_io = true;
+ vol->cache_ro = false;
+ vol->cache_rw = false;
+ break;
+ case Opt_cache_none:
+ vol->direct_io = true;
+ vol->strict_io = false;
+ vol->cache_ro = false;
+ vol->cache_rw = false;
+ break;
+ case Opt_cache_ro:
+ vol->direct_io = false;
+ vol->strict_io = false;
+ vol->cache_ro = true;
+ vol->cache_rw = false;
+ break;
+ case Opt_cache_rw:
+ vol->direct_io = false;
+ vol->strict_io = false;
+ vol->cache_ro = false;
+ vol->cache_rw = true;
+ break;
+ default:
+ cifs_dbg(VFS, "bad cache= option: %s\n", value);
+ return 1;
+ }
+ return 0;
+}
diff --git a/fs/cifs/fs_context.h b/fs/cifs/fs_context.h
new file mode 100644
index 0000000..886208a
--- /dev/null
+++ b/fs/cifs/fs_context.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020, Microsoft Corporation.
+ *
+ * Author(s): Steve French <stfrench@microsoft.com>
+ * David Howells <dhowells@redhat.com>
+ */
+
+#ifndef _FS_CONTEXT_H
+#define _FS_CONTEXT_H
+
+#include <linux/parser.h>
+#include "cifsglob.h"
+
+enum smb_version {
+ Smb_1 = 1,
+ Smb_20,
+ Smb_21,
+ Smb_30,
+ Smb_302,
+ Smb_311,
+ Smb_3any,
+ Smb_default,
+ Smb_version_err
+};
+
+int cifs_parse_smb_version(char *value, struct smb_vol *vol, bool is_smb3);
+
+enum {
+ Opt_cache_loose,
+ Opt_cache_strict,
+ Opt_cache_none,
+ Opt_cache_ro,
+ Opt_cache_rw,
+ Opt_cache_err
+};
+
+int cifs_parse_cache_flavor(char *value, struct smb_vol *vol);
+
+enum cifs_sec_param {
+ Opt_sec_krb5,
+ Opt_sec_krb5i,
+ Opt_sec_krb5p,
+ Opt_sec_ntlmsspi,
+ Opt_sec_ntlmssp,
+ Opt_ntlm,
+ Opt_sec_ntlmi,
+ Opt_sec_ntlmv2,
+ Opt_sec_ntlmv2i,
+ Opt_sec_lanman,
+ Opt_sec_none,
+
+ Opt_sec_err
+};
+
+int cifs_parse_security_flavors(char *value, struct smb_vol *vol);
+
+#endif
diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c
index ea6ace9..da68818 100644
--- a/fs/cifs/fscache.c
+++ b/fs/cifs/fscache.c
@@ -96,6 +96,7 @@
{
struct TCP_Server_Info *server = tcon->ses->server;
char *sharename;
+ struct cifs_fscache_super_auxdata auxdata;
sharename = extract_sharename(tcon->treeName);
if (IS_ERR(sharename)) {
@@ -104,11 +105,16 @@
return;
}
+ memset(&auxdata, 0, sizeof(auxdata));
+ auxdata.resource_id = tcon->resource_id;
+ auxdata.vol_create_time = tcon->vol_create_time;
+ auxdata.vol_serial_number = tcon->vol_serial_number;
+
tcon->fscache =
fscache_acquire_cookie(server->fscache,
&cifs_fscache_super_index_def,
sharename, strlen(sharename),
- &tcon->resource_id, sizeof(tcon->resource_id),
+ &auxdata, sizeof(auxdata),
tcon, 0, true);
kfree(sharename);
cifs_dbg(FYI, "%s: (0x%p/0x%p)\n",
@@ -117,8 +123,15 @@
void cifs_fscache_release_super_cookie(struct cifs_tcon *tcon)
{
+ struct cifs_fscache_super_auxdata auxdata;
+
+ memset(&auxdata, 0, sizeof(auxdata));
+ auxdata.resource_id = tcon->resource_id;
+ auxdata.vol_create_time = tcon->vol_create_time;
+ auxdata.vol_serial_number = tcon->vol_serial_number;
+
cifs_dbg(FYI, "%s: (0x%p)\n", __func__, tcon->fscache);
- fscache_relinquish_cookie(tcon->fscache, &tcon->resource_id, false);
+ fscache_relinquish_cookie(tcon->fscache, &auxdata, false);
tcon->fscache = NULL;
}
diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h
index 8c0862e..1091633 100644
--- a/fs/cifs/fscache.h
+++ b/fs/cifs/fscache.h
@@ -28,6 +28,15 @@
#ifdef CONFIG_CIFS_FSCACHE
/*
+ * Auxiliary data attached to CIFS superblock within the cache
+ */
+struct cifs_fscache_super_auxdata {
+ u64 resource_id; /* unique server resource id */
+ __le64 vol_create_time;
+ u32 vol_serial_number;
+} __packed;
+
+/*
* Auxiliary data attached to CIFS inode within the cache
*/
struct cifs_fscache_inode_auxdata {
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index fd9e289..b11a919 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -25,12 +25,14 @@
#include <linux/freezer.h>
#include <linux/sched/signal.h>
#include <linux/wait_bit.h>
+#include <linux/fiemap.h>
#include <asm/div64.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
+#include "smb2proto.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
#include "cifs_unicode.h"
@@ -61,7 +63,7 @@
}
/* check if server can support readpages */
- if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf <
+ if (cifs_sb_master_tcon(cifs_sb)->ses->server->max_read <
PAGE_SIZE + MAX_CIFS_HDR_SIZE)
inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
else
@@ -113,6 +115,7 @@
}
/* revalidate if mtime or size have changed */
+ fattr->cf_mtime = timestamp_truncate(fattr->cf_mtime, inode);
if (timespec64_equal(&inode->i_mtime, &fattr->cf_mtime) &&
cifs_i->server_eof == fattr->cf_eof) {
cifs_dbg(FYI, "%s: inode %llu is unchanged\n",
@@ -162,6 +165,9 @@
cifs_revalidate_cache(inode, fattr);
spin_lock(&inode->i_lock);
+ fattr->cf_mtime = timestamp_truncate(fattr->cf_mtime, inode);
+ fattr->cf_atime = timestamp_truncate(fattr->cf_atime, inode);
+ fattr->cf_ctime = timestamp_truncate(fattr->cf_ctime, inode);
/* we do not want atime to be less than mtime, it broke some apps */
if (timespec64_compare(&fattr->cf_atime, &fattr->cf_mtime) < 0)
inode->i_atime = fattr->cf_mtime;
@@ -329,8 +335,7 @@
fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU;
fattr->cf_uid = cifs_sb->mnt_uid;
fattr->cf_gid = cifs_sb->mnt_gid;
- ktime_get_real_ts64(&fattr->cf_mtime);
- fattr->cf_mtime = timespec64_trunc(fattr->cf_mtime, sb->s_time_gran);
+ ktime_get_coarse_real_ts64(&fattr->cf_mtime);
fattr->cf_atime = fattr->cf_ctime = fattr->cf_mtime;
fattr->cf_nlink = 2;
fattr->cf_flags = CIFS_FATTR_DFS_REFERRAL;
@@ -420,8 +425,7 @@
}
/* if filetype is different, return error */
- if (unlikely(((*pinode)->i_mode & S_IFMT) !=
- (fattr.cf_mode & S_IFMT))) {
+ if (unlikely(inode_wrong_type(*pinode, fattr.cf_mode))) {
CIFS_I(*pinode)->time = 0; /* force reval */
rc = -ESTALE;
goto cgiiu_exit;
@@ -444,7 +448,7 @@
struct cifs_tcon *tcon;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
char buf[24];
unsigned int bytes_read;
char *pbuf;
@@ -472,9 +476,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_READ;
- oparms.create_options = CREATE_NOT_DIR;
- if (backup_cred(cifs_sb))
- oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
@@ -593,11 +595,67 @@
#endif
}
+/* Fill a cifs_fattr struct with info from POSIX info struct */
+static void
+smb311_posix_info_to_fattr(struct cifs_fattr *fattr, struct smb311_posix_qinfo *info,
+ struct super_block *sb, bool adjust_tz, bool symlink)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
+
+ memset(fattr, 0, sizeof(*fattr));
+
+ /* no fattr->flags to set */
+ fattr->cf_cifsattrs = le32_to_cpu(info->DosAttributes);
+ fattr->cf_uniqueid = le64_to_cpu(info->Inode);
+
+ if (info->LastAccessTime)
+ fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
+ else
+ ktime_get_coarse_real_ts64(&fattr->cf_atime);
+
+ fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
+ fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
+
+ if (adjust_tz) {
+ fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj;
+ fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj;
+ }
+
+ fattr->cf_eof = le64_to_cpu(info->EndOfFile);
+ fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
+ fattr->cf_createtime = le64_to_cpu(info->CreationTime);
+
+ fattr->cf_nlink = le32_to_cpu(info->HardLinks);
+ fattr->cf_mode = (umode_t) le32_to_cpu(info->Mode);
+ /* The srv fs device id is overridden on network mount so setting rdev isn't needed here */
+ /* fattr->cf_rdev = le32_to_cpu(info->DeviceId); */
+
+ if (symlink) {
+ fattr->cf_mode |= S_IFLNK;
+ fattr->cf_dtype = DT_LNK;
+ } else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
+ fattr->cf_mode |= S_IFDIR;
+ fattr->cf_dtype = DT_DIR;
+ } else { /* file */
+ fattr->cf_mode |= S_IFREG;
+ fattr->cf_dtype = DT_REG;
+ }
+ /* else if reparse point ... TODO: add support for FIFO and blk dev; special file types */
+
+ fattr->cf_uid = cifs_sb->mnt_uid; /* TODO: map uid and gid from SID */
+ fattr->cf_gid = cifs_sb->mnt_gid;
+
+ cifs_dbg(FYI, "POSIX query info: mode 0x%x uniqueid 0x%llx nlink %d\n",
+ fattr->cf_mode, fattr->cf_uniqueid, fattr->cf_nlink);
+}
+
+
/* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
static void
cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
struct super_block *sb, bool adjust_tz,
- bool symlink)
+ bool symlink, u32 reparse_tag)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
@@ -609,10 +667,8 @@
if (info->LastAccessTime)
fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
- else {
- ktime_get_real_ts64(&fattr->cf_atime);
- fattr->cf_atime = timespec64_trunc(fattr->cf_atime, sb->s_time_gran);
- }
+ else
+ ktime_get_coarse_real_ts64(&fattr->cf_atime);
fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
@@ -627,8 +683,22 @@
fattr->cf_createtime = le64_to_cpu(info->CreationTime);
fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
-
- if (symlink) {
+ if (reparse_tag == IO_REPARSE_TAG_LX_SYMLINK) {
+ fattr->cf_mode |= S_IFLNK | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_LNK;
+ } else if (reparse_tag == IO_REPARSE_TAG_LX_FIFO) {
+ fattr->cf_mode |= S_IFIFO | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_FIFO;
+ } else if (reparse_tag == IO_REPARSE_TAG_AF_UNIX) {
+ fattr->cf_mode |= S_IFSOCK | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_SOCK;
+ } else if (reparse_tag == IO_REPARSE_TAG_LX_CHR) {
+ fattr->cf_mode |= S_IFCHR | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_CHR;
+ } else if (reparse_tag == IO_REPARSE_TAG_LX_BLK) {
+ fattr->cf_mode |= S_IFBLK | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_BLK;
+ } else if (symlink) { /* TODO add more reparse tag checks */
fattr->cf_mode = S_IFLNK;
fattr->cf_dtype = DT_LNK;
} else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
@@ -654,8 +724,8 @@
*/
if ((fattr->cf_nlink < 1) && !tcon->unix_ext &&
!info->DeletePending) {
- cifs_dbg(1, "bogus file nlink value %u\n",
- fattr->cf_nlink);
+ cifs_dbg(VFS, "bogus file nlink value %u\n",
+ fattr->cf_nlink);
fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
}
}
@@ -683,8 +753,9 @@
rc = server->ops->query_file_info(xid, tcon, &cfile->fid, &find_data);
switch (rc) {
case 0:
+ /* TODO: add support to query reparse tag */
cifs_all_info_to_fattr(&fattr, &find_data, inode->i_sb, false,
- false);
+ false, 0 /* no reparse tag */);
break;
case -EREMOTE:
cifs_create_dfs_fattr(&fattr, inode->i_sb);
@@ -727,22 +798,139 @@
return hash;
}
+/**
+ * cifs_backup_query_path_info - SMB1 fallback code to get ino
+ *
+ * Fallback code to get file metadata when we don't have access to
+ * @full_path (EACCES) and have backup creds.
+ *
+ * @data will be set to search info result buffer
+ * @resp_buf will be set to cifs resp buf and needs to be freed with
+ * cifs_buf_release() when done with @data.
+ */
+static int
+cifs_backup_query_path_info(int xid,
+ struct cifs_tcon *tcon,
+ struct super_block *sb,
+ const char *full_path,
+ void **resp_buf,
+ FILE_ALL_INFO **data)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct cifs_search_info info = {0};
+ u16 flags;
+ int rc;
+
+ *resp_buf = NULL;
+ info.endOfSearch = false;
+ if (tcon->unix_ext)
+ info.info_level = SMB_FIND_FILE_UNIX;
+ else if ((tcon->ses->capabilities &
+ tcon->ses->server->vals->cap_nt_find) == 0)
+ info.info_level = SMB_FIND_FILE_INFO_STANDARD;
+ else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
+ info.info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
+ else /* no srvino useful for fallback to some netapp */
+ info.info_level = SMB_FIND_FILE_DIRECTORY_INFO;
+
+ flags = CIFS_SEARCH_CLOSE_ALWAYS |
+ CIFS_SEARCH_CLOSE_AT_END |
+ CIFS_SEARCH_BACKUP_SEARCH;
+
+ rc = CIFSFindFirst(xid, tcon, full_path,
+ cifs_sb, NULL, flags, &info, false);
+ if (rc)
+ return rc;
+
+ *resp_buf = (void *)info.ntwrk_buf_start;
+ *data = (FILE_ALL_INFO *)info.srch_entries_start;
+ return 0;
+}
+
+static void
+cifs_set_fattr_ino(int xid,
+ struct cifs_tcon *tcon,
+ struct super_block *sb,
+ struct inode **inode,
+ const char *full_path,
+ FILE_ALL_INFO *data,
+ struct cifs_fattr *fattr)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct TCP_Server_Info *server = tcon->ses->server;
+ int rc;
+
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
+ if (*inode)
+ fattr->cf_uniqueid = CIFS_I(*inode)->uniqueid;
+ else
+ fattr->cf_uniqueid = iunique(sb, ROOT_I);
+ return;
+ }
+
+ /*
+ * If we have an inode pass a NULL tcon to ensure we don't
+ * make a round trip to the server. This only works for SMB2+.
+ */
+ rc = server->ops->get_srv_inum(xid,
+ *inode ? NULL : tcon,
+ cifs_sb, full_path,
+ &fattr->cf_uniqueid,
+ data);
+ if (rc) {
+ /*
+ * If that fails reuse existing ino or generate one
+ * and disable server ones
+ */
+ if (*inode)
+ fattr->cf_uniqueid = CIFS_I(*inode)->uniqueid;
+ else {
+ fattr->cf_uniqueid = iunique(sb, ROOT_I);
+ cifs_autodisable_serverino(cifs_sb);
+ }
+ return;
+ }
+
+ /* If no errors, check for zero root inode (invalid) */
+ if (fattr->cf_uniqueid == 0 && strlen(full_path) == 0) {
+ cifs_dbg(FYI, "Invalid (0) inodenum\n");
+ if (*inode) {
+ /* reuse */
+ fattr->cf_uniqueid = CIFS_I(*inode)->uniqueid;
+ } else {
+ /* make an ino by hashing the UNC */
+ fattr->cf_flags |= CIFS_FATTR_FAKE_ROOT_INO;
+ fattr->cf_uniqueid = simple_hashstr(tcon->treeName);
+ }
+ }
+}
+
+static inline bool is_inode_cache_good(struct inode *ino)
+{
+ return ino && CIFS_CACHE_READ(CIFS_I(ino)) && CIFS_I(ino)->time != 0;
+}
+
int
-cifs_get_inode_info(struct inode **inode, const char *full_path,
- FILE_ALL_INFO *data, struct super_block *sb, int xid,
+cifs_get_inode_info(struct inode **inode,
+ const char *full_path,
+ FILE_ALL_INFO *in_data,
+ struct super_block *sb, int xid,
const struct cifs_fid *fid)
{
- __u16 srchflgs;
- int rc = 0, tmprc = ENOSYS;
+
struct cifs_tcon *tcon;
struct TCP_Server_Info *server;
struct tcon_link *tlink;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
- char *buf = NULL;
bool adjust_tz = false;
- struct cifs_fattr fattr;
- struct cifs_search_info *srchinf = NULL;
- bool symlink = false;
+ struct cifs_fattr fattr = {0};
+ bool is_reparse_point = false;
+ FILE_ALL_INFO *data = in_data;
+ FILE_ALL_INFO *tmp_data = NULL;
+ void *smb1_backup_rsp_buf = NULL;
+ int rc = 0;
+ int tmprc = 0;
+ __u32 reparse_tag = 0;
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
@@ -750,142 +938,100 @@
tcon = tlink_tcon(tlink);
server = tcon->ses->server;
- cifs_dbg(FYI, "Getting info on %s\n", full_path);
+ /*
+ * 1. Fetch file metadata if not provided (data)
+ */
- if ((data == NULL) && (*inode != NULL)) {
- if (CIFS_CACHE_READ(CIFS_I(*inode)) &&
- CIFS_I(*inode)->time != 0) {
+ if (!data) {
+ if (is_inode_cache_good(*inode)) {
cifs_dbg(FYI, "No need to revalidate cached inode sizes\n");
- goto cgii_exit;
+ goto out;
}
- }
-
- /* if inode info is not passed, get it from server */
- if (data == NULL) {
- if (!server->ops->query_path_info) {
- rc = -ENOSYS;
- goto cgii_exit;
- }
- buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
- if (buf == NULL) {
+ tmp_data = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+ if (!tmp_data) {
rc = -ENOMEM;
- goto cgii_exit;
+ goto out;
}
- data = (FILE_ALL_INFO *)buf;
- rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path,
- data, &adjust_tz, &symlink);
+ rc = server->ops->query_path_info(xid, tcon, cifs_sb,
+ full_path, tmp_data,
+ &adjust_tz, &is_reparse_point);
+ data = tmp_data;
}
- if (!rc) {
- cifs_all_info_to_fattr(&fattr, data, sb, adjust_tz,
- symlink);
- } else if (rc == -EREMOTE) {
- cifs_create_dfs_fattr(&fattr, sb);
- rc = 0;
- } else if ((rc == -EACCES) && backup_cred(cifs_sb) &&
- (strcmp(server->vals->version_string, SMB1_VERSION_STRING)
- == 0)) {
- /*
- * For SMB2 and later the backup intent flag is already
- * sent if needed on open and there is no path based
- * FindFirst operation to use to retry with
- */
-
- srchinf = kzalloc(sizeof(struct cifs_search_info),
- GFP_KERNEL);
- if (srchinf == NULL) {
- rc = -ENOMEM;
- goto cgii_exit;
- }
-
- srchinf->endOfSearch = false;
- if (tcon->unix_ext)
- srchinf->info_level = SMB_FIND_FILE_UNIX;
- else if ((tcon->ses->capabilities &
- tcon->ses->server->vals->cap_nt_find) == 0)
- srchinf->info_level = SMB_FIND_FILE_INFO_STANDARD;
- else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
- srchinf->info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
- else /* no srvino useful for fallback to some netapp */
- srchinf->info_level = SMB_FIND_FILE_DIRECTORY_INFO;
-
- srchflgs = CIFS_SEARCH_CLOSE_ALWAYS |
- CIFS_SEARCH_CLOSE_AT_END |
- CIFS_SEARCH_BACKUP_SEARCH;
-
- rc = CIFSFindFirst(xid, tcon, full_path,
- cifs_sb, NULL, srchflgs, srchinf, false);
- if (!rc) {
- data = (FILE_ALL_INFO *)srchinf->srch_entries_start;
-
- cifs_dir_info_to_fattr(&fattr,
- (FILE_DIRECTORY_INFO *)data, cifs_sb);
- fattr.cf_uniqueid = le64_to_cpu(
- ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId);
-
- cifs_buf_release(srchinf->ntwrk_buf_start);
- }
- kfree(srchinf);
- if (rc)
- goto cgii_exit;
- } else
- goto cgii_exit;
-
/*
- * If an inode wasn't passed in, then get the inode number
- *
- * Is an i_ino of zero legal? Can we use that to check if the server
- * supports returning inode numbers? Are there other sanity checks we
- * can use to ensure that the server is really filling in that field?
+ * 2. Convert it to internal cifs metadata (fattr)
*/
- if (*inode == NULL) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
- if (server->ops->get_srv_inum)
- tmprc = server->ops->get_srv_inum(xid,
- tcon, cifs_sb, full_path,
- &fattr.cf_uniqueid, data);
- if (tmprc) {
- cifs_dbg(FYI, "GetSrvInodeNum rc %d\n",
- tmprc);
- fattr.cf_uniqueid = iunique(sb, ROOT_I);
- cifs_autodisable_serverino(cifs_sb);
- } else if ((fattr.cf_uniqueid == 0) &&
- strlen(full_path) == 0) {
- /* some servers ret bad root ino ie 0 */
- cifs_dbg(FYI, "Invalid (0) inodenum\n");
- fattr.cf_flags |=
- CIFS_FATTR_FAKE_ROOT_INO;
- fattr.cf_uniqueid =
- simple_hashstr(tcon->treeName);
- }
- } else
- fattr.cf_uniqueid = iunique(sb, ROOT_I);
- } else {
- if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
- && server->ops->get_srv_inum) {
- /*
- * Pass a NULL tcon to ensure we don't make a round
- * trip to the server. This only works for SMB2+.
- */
- tmprc = server->ops->get_srv_inum(xid,
- NULL, cifs_sb, full_path,
- &fattr.cf_uniqueid, data);
- if (tmprc)
- fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid;
- else if ((fattr.cf_uniqueid == 0) &&
- strlen(full_path) == 0) {
- /*
- * Reuse existing root inode num since
- * inum zero for root causes ls of . and .. to
- * not be returned
- */
- cifs_dbg(FYI, "Srv ret 0 inode num for root\n");
- fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid;
- }
- } else
- fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid;
+
+ switch (rc) {
+ case 0:
+ /*
+ * If the file is a reparse point, it is more complicated
+ * since we have to check if its reparse tag matches a known
+ * special file type e.g. symlink or fifo or char etc.
+ */
+ if ((le32_to_cpu(data->Attributes) & ATTR_REPARSE) &&
+ server->ops->query_reparse_tag) {
+ rc = server->ops->query_reparse_tag(xid, tcon, cifs_sb,
+ full_path, &reparse_tag);
+ cifs_dbg(FYI, "reparse tag 0x%x\n", reparse_tag);
+ }
+ cifs_all_info_to_fattr(&fattr, data, sb, adjust_tz,
+ is_reparse_point, reparse_tag);
+ break;
+ case -EREMOTE:
+ /* DFS link, no metadata available on this server */
+ cifs_create_dfs_fattr(&fattr, sb);
+ rc = 0;
+ break;
+ case -EACCES:
+ /*
+ * perm errors, try again with backup flags if possible
+ *
+ * For SMB2 and later the backup intent flag
+ * is already sent if needed on open and there
+ * is no path based FindFirst operation to use
+ * to retry with
+ */
+ if (backup_cred(cifs_sb) && is_smb1_server(server)) {
+ /* for easier reading */
+ FILE_DIRECTORY_INFO *fdi;
+ SEARCH_ID_FULL_DIR_INFO *si;
+
+ rc = cifs_backup_query_path_info(xid, tcon, sb,
+ full_path,
+ &smb1_backup_rsp_buf,
+ &data);
+ if (rc)
+ goto out;
+
+ fdi = (FILE_DIRECTORY_INFO *)data;
+ si = (SEARCH_ID_FULL_DIR_INFO *)data;
+
+ cifs_dir_info_to_fattr(&fattr, fdi, cifs_sb);
+ fattr.cf_uniqueid = le64_to_cpu(si->UniqueId);
+ /* uniqueid set, skip get inum step */
+ goto handle_mnt_opt;
+ } else {
+ /* nothing we can do, bail out */
+ goto out;
+ }
+ break;
+ default:
+ cifs_dbg(FYI, "%s: unhandled err rc %d\n", __func__, rc);
+ goto out;
}
+ /*
+ * 3. Get or update inode number (fattr.cf_uniqueid)
+ */
+
+ cifs_set_fattr_ino(xid, tcon, sb, inode, full_path, data, &fattr);
+
+ /*
+ * 4. Tweak fattr based on mount options
+ */
+
+handle_mnt_opt:
/* query for SFU type info if supported and needed */
if (fattr.cf_cifsattrs & ATTR_SYSTEM &&
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
@@ -902,8 +1048,8 @@
rc = 0;
if (rc) {
cifs_dbg(FYI, "%s: Get mode from SID failed. rc=%d\n",
- __func__, rc);
- goto cgii_exit;
+ __func__, rc);
+ goto out;
}
} else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, false,
@@ -913,7 +1059,7 @@
if (rc) {
cifs_dbg(FYI, "%s: Getting ACL failed with error: %d\n",
__func__, rc);
- goto cgii_exit;
+ goto out;
}
}
@@ -929,6 +1075,10 @@
cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
}
+ /*
+ * 5. Update inode with final fattr data
+ */
+
if (!*inode) {
*inode = cifs_iget(sb, &fattr);
if (!*inode)
@@ -941,7 +1091,7 @@
CIFS_I(*inode)->uniqueid != fattr.cf_uniqueid)) {
CIFS_I(*inode)->time = 0; /* force reval */
rc = -ESTALE;
- goto cgii_exit;
+ goto out;
}
/* if filetype is different, return error */
@@ -949,21 +1099,131 @@
(fattr.cf_mode & S_IFMT))) {
CIFS_I(*inode)->time = 0; /* force reval */
rc = -ESTALE;
- goto cgii_exit;
+ goto out;
}
cifs_fattr_to_inode(*inode, &fattr);
}
-
-cgii_exit:
- if ((*inode) && ((*inode)->i_ino == 0))
- cifs_dbg(FYI, "inode number of zero returned\n");
-
- kfree(buf);
+out:
+ cifs_buf_release(smb1_backup_rsp_buf);
cifs_put_tlink(tlink);
+ kfree(tmp_data);
return rc;
}
+int
+smb311_posix_get_inode_info(struct inode **inode,
+ const char *full_path,
+ struct super_block *sb, unsigned int xid)
+{
+ struct cifs_tcon *tcon;
+ struct tcon_link *tlink;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ bool adjust_tz = false;
+ struct cifs_fattr fattr = {0};
+ bool symlink = false;
+ struct smb311_posix_qinfo *data = NULL;
+ int rc = 0;
+ int tmprc = 0;
+
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
+
+ /*
+ * 1. Fetch file metadata
+ */
+
+ if (is_inode_cache_good(*inode)) {
+ cifs_dbg(FYI, "No need to revalidate cached inode sizes\n");
+ goto out;
+ }
+ data = kmalloc(sizeof(struct smb311_posix_qinfo), GFP_KERNEL);
+ if (!data) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ rc = smb311_posix_query_path_info(xid, tcon, cifs_sb,
+ full_path, data,
+ &adjust_tz, &symlink);
+
+ /*
+ * 2. Convert it to internal cifs metadata (fattr)
+ */
+
+ switch (rc) {
+ case 0:
+ smb311_posix_info_to_fattr(&fattr, data, sb, adjust_tz, symlink);
+ break;
+ case -EREMOTE:
+ /* DFS link, no metadata available on this server */
+ cifs_create_dfs_fattr(&fattr, sb);
+ rc = 0;
+ break;
+ case -EACCES:
+ /*
+ * For SMB2 and later the backup intent flag
+ * is already sent if needed on open and there
+ * is no path based FindFirst operation to use
+ * to retry with so nothing we can do, bail out
+ */
+ goto out;
+ default:
+ cifs_dbg(FYI, "%s: unhandled err rc %d\n", __func__, rc);
+ goto out;
+ }
+
+
+ /*
+ * 3. Tweak fattr based on mount options
+ */
+
+ /* check for Minshall+French symlinks */
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
+ tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
+ full_path);
+ if (tmprc)
+ cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
+ }
+
+ /*
+ * 4. Update inode with final fattr data
+ */
+
+ if (!*inode) {
+ *inode = cifs_iget(sb, &fattr);
+ if (!*inode)
+ rc = -ENOMEM;
+ } else {
+ /* we already have inode, update it */
+
+ /* if uniqueid is different, return error */
+ if (unlikely(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM &&
+ CIFS_I(*inode)->uniqueid != fattr.cf_uniqueid)) {
+ CIFS_I(*inode)->time = 0; /* force reval */
+ rc = -ESTALE;
+ goto out;
+ }
+
+ /* if filetype is different, return error */
+ if (unlikely(((*inode)->i_mode & S_IFMT) !=
+ (fattr.cf_mode & S_IFMT))) {
+ CIFS_I(*inode)->time = 0; /* force reval */
+ rc = -ESTALE;
+ goto out;
+ }
+
+ cifs_fattr_to_inode(*inode, &fattr);
+ }
+out:
+ cifs_put_tlink(tlink);
+ kfree(data);
+ return rc;
+}
+
+
static const struct inode_operations cifs_ipc_inode_ops = {
.lookup = cifs_lookup,
};
@@ -982,7 +1242,7 @@
return 0;
/* don't match inode of different type */
- if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT))
+ if (inode_wrong_type(inode, fattr->cf_mode))
return 0;
/* if it's not a directory or has no dentries, then flag it */
@@ -1097,12 +1357,15 @@
/* some servers mistakenly claim POSIX support */
if (rc != -EOPNOTSUPP)
goto iget_no_retry;
- cifs_dbg(VFS, "server does not support POSIX extensions");
+ cifs_dbg(VFS, "server does not support POSIX extensions\n");
tcon->unix_ext = false;
}
convert_delimiter(path, CIFS_DIR_SEP(cifs_sb));
- rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL);
+ if (tcon->posix_extensions)
+ rc = smb311_posix_get_inode_info(&inode, path, sb, xid);
+ else
+ rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL);
iget_no_retry:
if (!inode) {
@@ -1225,7 +1488,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
- oparms.create_options = CREATE_NOT_DIR;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_OPEN;
oparms.path = full_path;
oparms.fid = &fid;
@@ -1360,6 +1623,11 @@
xid = get_xid();
+ if (tcon->nodelete) {
+ rc = -EACCES;
+ goto unlink_out;
+ }
+
/* Unlink can be called from rename so we can not take the
* sb->s_vfs_rename_mutex here */
full_path = build_path_from_dentry(dentry);
@@ -1453,7 +1721,9 @@
int rc = 0;
struct inode *inode = NULL;
- if (tcon->unix_ext)
+ if (tcon->posix_extensions)
+ rc = smb311_posix_get_inode_info(&inode, full_path, parent->i_sb, xid);
+ else if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb,
xid);
else
@@ -1688,6 +1958,12 @@
goto rmdir_exit;
}
+ if (tcon->nodelete) {
+ rc = -EACCES;
+ cifs_put_tlink(tlink);
+ goto rmdir_exit;
+ }
+
rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb);
cifs_put_tlink(tlink);
@@ -1763,7 +2039,7 @@
oparms.cifs_sb = cifs_sb;
/* open the file to be renamed -- we need DELETE perms */
oparms.desired_access = DELETE;
- oparms.create_options = CREATE_NOT_DIR;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_OPEN;
oparms.path = from_path;
oparms.fid = &fid;
@@ -1777,6 +2053,8 @@
CIFSSMBClose(xid, tcon, fid.netfid);
}
do_rename_exit:
+ if (rc == 0)
+ d_move(from_dentry, to_dentry);
cifs_put_tlink(tlink);
return rc;
}
@@ -1939,7 +2217,7 @@
if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
rc = invalidate_inode_pages2(inode->i_mapping);
if (rc)
- cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
+ cifs_dbg(VFS, "%s: Could not invalidate inode %p\n",
__func__, inode);
}
@@ -1966,6 +2244,10 @@
int rc;
unsigned long *flags = &CIFS_I(inode)->flags;
+ /* swapfiles are not supposed to be shared */
+ if (IS_SWAPFILE(inode))
+ return 0;
+
rc = wait_on_bit_lock_action(flags, CIFS_INO_LOCK, cifs_wait_bit_killable,
TASK_KILLABLE);
if (rc)
@@ -2038,7 +2320,9 @@
dentry, cifs_get_time(dentry), jiffies);
again:
- if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
+ if (cifs_sb_master_tcon(CIFS_SB(sb))->posix_extensions)
+ rc = smb311_posix_get_inode_info(&inode, full_path, sb, xid);
+ else if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
else
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
@@ -2090,8 +2374,9 @@
* We need to be sure that all dirty pages are written and the server
* has actual ctime, mtime and file length.
*/
- if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
- inode->i_mapping->nrpages != 0) {
+ if ((request_mask & (STATX_CTIME | STATX_MTIME | STATX_SIZE | STATX_BLOCKS)) &&
+ !CIFS_CACHE_READ(CIFS_I(inode)) &&
+ inode->i_mapping && inode->i_mapping->nrpages != 0) {
rc = filemap_fdatawait(inode->i_mapping);
if (rc) {
mapping_set_error(inode->i_mapping, rc);
@@ -2099,9 +2384,20 @@
}
}
- rc = cifs_revalidate_dentry_attr(dentry);
- if (rc)
- return rc;
+ if ((flags & AT_STATX_SYNC_TYPE) == AT_STATX_FORCE_SYNC)
+ CIFS_I(inode)->time = 0; /* force revalidate */
+
+ /*
+ * If the caller doesn't require syncing, only sync if
+ * necessary (e.g. due to earlier truncate or setattr
+ * invalidating the cached metadata)
+ */
+ if (((flags & AT_STATX_SYNC_TYPE) != AT_STATX_DONT_SYNC) ||
+ (CIFS_I(inode)->time == 0)) {
+ rc = cifs_revalidate_dentry_attr(dentry);
+ if (rc)
+ return rc;
+ }
generic_fillattr(inode, stat);
stat->blksize = cifs_sb->bsize;
@@ -2133,7 +2429,7 @@
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
stat->gid = current_fsgid();
}
- return rc;
+ return 0;
}
int cifs_fiemap(struct inode *inode, struct fiemap_extent_info *fei, u64 start,
@@ -2173,7 +2469,7 @@
return -ENOTSUPP;
}
-static int cifs_truncate_page(struct address_space *mapping, loff_t from)
+int cifs_truncate_page(struct address_space *mapping, loff_t from)
{
pgoff_t index = from >> PAGE_SHIFT;
unsigned offset = from & (PAGE_SIZE - 1);
@@ -2190,7 +2486,7 @@
return rc;
}
-static void cifs_setsize(struct inode *inode, loff_t offset)
+void cifs_setsize(struct inode *inode, loff_t offset)
{
struct cifsInodeInfo *cifs_i = CIFS_I(inode);
@@ -2268,6 +2564,14 @@
if (rc == 0) {
cifsInode->server_eof = attrs->ia_size;
cifs_setsize(inode, attrs->ia_size);
+ /*
+ * i_blocks is not related to (i_size / i_blksize), but instead
+ * 512 byte (2**9) size is required for calculating num blocks.
+ * Until we can query the server for actual allocation size,
+ * this is best estimate we have for blocks allocated for a file
+ * Number of blocks must be rounded up so size 1 is not 0 blocks
+ */
+ inode->i_blocks = (512 - 1 + attrs->ia_size) >> 9;
/*
* The man page of truncate says if the size changed,
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 1a01e10..dcde44f 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -65,7 +65,7 @@
if (tcon->ses->server->ops->ioctl_query_info)
rc = tcon->ses->server->ops->ioctl_query_info(
- xid, tcon, utf16_path,
+ xid, tcon, cifs_sb, utf16_path,
filep->private_data ? 0 : 1, p);
else
rc = -EOPNOTSUPP;
@@ -169,6 +169,8 @@
unsigned int xid;
struct cifsFileInfo *pSMBFile = filep->private_data;
struct cifs_tcon *tcon;
+ struct tcon_link *tlink;
+ struct cifs_sb_info *cifs_sb;
__u64 ExtAttrBits = 0;
__u64 caps;
@@ -299,6 +301,27 @@
else
rc = 0;
break;
+ case CIFS_IOC_NOTIFY:
+ if (!S_ISDIR(inode->i_mode)) {
+ /* Notify can only be done on directories */
+ rc = -EOPNOTSUPP;
+ break;
+ }
+ cifs_sb = CIFS_SB(inode->i_sb);
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink)) {
+ rc = PTR_ERR(tlink);
+ break;
+ }
+ tcon = tlink_tcon(tlink);
+ if (tcon && tcon->ses->server->ops->notify) {
+ rc = tcon->ses->server->ops->notify(xid,
+ filep, (void __user *)arg);
+ cifs_dbg(FYI, "ioctl notify rc %d\n", rc);
+ } else
+ rc = -EOPNOTSUPP;
+ cifs_put_tlink(tlink);
+ break;
default:
cifs_dbg(FYI, "unsupported ioctl\n");
break;
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index b736acd..94dab43 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -308,14 +308,14 @@
int oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
int buf_type = CIFS_NO_BUFFER;
FILE_ALL_INFO file_info;
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_READ;
- oparms.create_options = CREATE_NOT_DIR;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
@@ -352,16 +352,12 @@
int oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
- int create_options = CREATE_NOT_DIR;
-
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
+ struct cifs_io_parms io_parms = {0};
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_CREATE;
oparms.path = path;
oparms.fid = &fid;
@@ -393,7 +389,7 @@
int rc;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
int buf_type = CIFS_NO_BUFFER;
__le16 *utf16_path;
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
@@ -402,9 +398,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_READ;
- oparms.create_options = CREATE_NOT_DIR;
- if (backup_cred(cifs_sb))
- oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_OPEN;
oparms.fid = &fid;
oparms.reconnect = false;
@@ -422,7 +416,7 @@
}
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, pfile_info, NULL,
- NULL);
+ NULL, NULL);
if (rc)
goto qmf_out_open_fail;
@@ -456,15 +450,11 @@
int rc;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
- int create_options = CREATE_NOT_DIR;
+ struct cifs_io_parms io_parms = {0};
__le16 *utf16_path;
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct kvec iov[2];
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
cifs_dbg(FYI, "%s: path: %s\n", __func__, path);
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
@@ -474,13 +464,13 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_CREATE;
oparms.fid = &fid;
oparms.reconnect = false;
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
- NULL);
+ NULL, NULL);
if (rc) {
kfree(utf16_path);
return rc;
@@ -711,7 +701,9 @@
cifs_sb_target->local_nls); */
if (rc == 0) {
- if (pTcon->unix_ext)
+ if (pTcon->posix_extensions)
+ rc = smb311_posix_get_inode_info(&newinode, full_path, inode->i_sb, xid);
+ else if (pTcon->unix_ext)
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb, xid);
else
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 40ca394..1c14cf0 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -31,6 +31,10 @@
#include "nterr.h"
#include "cifs_unicode.h"
#include "smb2pdu.h"
+#include "cifsfs.h"
+#ifdef CONFIG_CIFS_DFS_UPCALL
+#include "dns_resolve.h"
+#endif
extern mempool_t *cifs_sm_req_poolp;
extern mempool_t *cifs_req_poolp;
@@ -99,12 +103,12 @@
kfree(buf_to_free->serverOS);
kfree(buf_to_free->serverDomain);
kfree(buf_to_free->serverNOS);
- kzfree(buf_to_free->password);
+ kfree_sensitive(buf_to_free->password);
kfree(buf_to_free->user_name);
kfree(buf_to_free->domainName);
- kzfree(buf_to_free->auth_key.response);
+ kfree_sensitive(buf_to_free->auth_key.response);
kfree(buf_to_free->iface_list);
- kzfree(buf_to_free);
+ kfree_sensitive(buf_to_free);
}
struct cifs_tcon *
@@ -144,7 +148,7 @@
}
atomic_dec(&tconInfoAllocCount);
kfree(buf_to_free->nativeFileSystem);
- kzfree(buf_to_free->password);
+ kfree_sensitive(buf_to_free->password);
kfree(buf_to_free->crfid.fid);
#ifdef CONFIG_CIFS_DFS_UPCALL
kfree(buf_to_free->dfs_path);
@@ -420,7 +424,7 @@
if (data_offset >
len - sizeof(struct file_notify_information)) {
- cifs_dbg(FYI, "invalid data_offset %u\n",
+ cifs_dbg(FYI, "Invalid data_offset %u\n",
data_offset);
return true;
}
@@ -448,7 +452,7 @@
large dirty files cached on the client */
if ((NT_STATUS_INVALID_HANDLE) ==
le32_to_cpu(pSMB->hdr.Status.CifsError)) {
- cifs_dbg(FYI, "invalid handle on oplock break\n");
+ cifs_dbg(FYI, "Invalid handle on oplock break\n");
return true;
} else if (ERRbadfid ==
le16_to_cpu(pSMB->hdr.Status.DosError.Error)) {
@@ -529,9 +533,9 @@
cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM;
cifs_sb->mnt_cifs_serverino_autodisabled = true;
- cifs_dbg(VFS, "Autodisabling the use of server inode numbers on %s.\n",
+ cifs_dbg(VFS, "Autodisabling the use of server inode numbers on %s\n",
tcon ? tcon->treeName : "new server");
- cifs_dbg(VFS, "The server doesn't seem to support them properly or the files might be on different servers (DFS).\n");
+ cifs_dbg(VFS, "The server doesn't seem to support them properly or the files might be on different servers (DFS)\n");
cifs_dbg(VFS, "Hardlinks will not be recognized on this mount. Consider mounting with the \"noserverino\" option to silence this message.\n");
}
@@ -840,28 +844,26 @@
struct bio_vec *bv = NULL;
if (iov_iter_is_kvec(iter)) {
- memcpy(&ctx->iter, iter, sizeof(struct iov_iter));
+ memcpy(&ctx->iter, iter, sizeof(*iter));
ctx->len = count;
iov_iter_advance(iter, count);
return 0;
}
- if (max_pages * sizeof(struct bio_vec) <= CIFS_AIO_KMALLOC_LIMIT)
- bv = kmalloc_array(max_pages, sizeof(struct bio_vec),
- GFP_KERNEL);
+ if (array_size(max_pages, sizeof(*bv)) <= CIFS_AIO_KMALLOC_LIMIT)
+ bv = kmalloc_array(max_pages, sizeof(*bv), GFP_KERNEL);
if (!bv) {
- bv = vmalloc(array_size(max_pages, sizeof(struct bio_vec)));
+ bv = vmalloc(array_size(max_pages, sizeof(*bv)));
if (!bv)
return -ENOMEM;
}
- if (max_pages * sizeof(struct page *) <= CIFS_AIO_KMALLOC_LIMIT)
- pages = kmalloc_array(max_pages, sizeof(struct page *),
- GFP_KERNEL);
+ if (array_size(max_pages, sizeof(*pages)) <= CIFS_AIO_KMALLOC_LIMIT)
+ pages = kmalloc_array(max_pages, sizeof(*pages), GFP_KERNEL);
if (!pages) {
- pages = vmalloc(array_size(max_pages, sizeof(struct page *)));
+ pages = vmalloc(array_size(max_pages, sizeof(*pages)));
if (!pages) {
kvfree(bv);
return -ENOMEM;
@@ -873,7 +875,7 @@
while (count && npages < max_pages) {
rc = iov_iter_get_pages(iter, pages, count, max_pages, &start);
if (rc < 0) {
- cifs_dbg(VFS, "couldn't get user pages (rc=%zd)\n", rc);
+ cifs_dbg(VFS, "Couldn't get user pages (rc=%zd)\n", rc);
break;
}
@@ -932,7 +934,7 @@
*shash = crypto_alloc_shash(name, 0, 0);
if (IS_ERR(*shash)) {
- cifs_dbg(VFS, "could not allocate crypto %s\n", name);
+ cifs_dbg(VFS, "Could not allocate crypto %s\n", name);
rc = PTR_ERR(*shash);
*shash = NULL;
*sdesc = NULL;
@@ -1022,3 +1024,174 @@
name_len++;
return name_len;
}
+
+struct super_cb_data {
+ void *data;
+ struct super_block *sb;
+};
+
+static void tcp_super_cb(struct super_block *sb, void *arg)
+{
+ struct super_cb_data *sd = arg;
+ struct TCP_Server_Info *server = sd->data;
+ struct cifs_sb_info *cifs_sb;
+ struct cifs_tcon *tcon;
+
+ if (sd->sb)
+ return;
+
+ cifs_sb = CIFS_SB(sb);
+ tcon = cifs_sb_master_tcon(cifs_sb);
+ if (tcon->ses->server == server)
+ sd->sb = sb;
+}
+
+static struct super_block *__cifs_get_super(void (*f)(struct super_block *, void *),
+ void *data)
+{
+ struct super_cb_data sd = {
+ .data = data,
+ .sb = NULL,
+ };
+
+ iterate_supers_type(&cifs_fs_type, f, &sd);
+
+ if (!sd.sb)
+ return ERR_PTR(-EINVAL);
+ /*
+ * Grab an active reference in order to prevent automounts (DFS links)
+ * of expiring and then freeing up our cifs superblock pointer while
+ * we're doing failover.
+ */
+ cifs_sb_active(sd.sb);
+ return sd.sb;
+}
+
+static void __cifs_put_super(struct super_block *sb)
+{
+ if (!IS_ERR_OR_NULL(sb))
+ cifs_sb_deactive(sb);
+}
+
+struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server)
+{
+ return __cifs_get_super(tcp_super_cb, server);
+}
+
+void cifs_put_tcp_super(struct super_block *sb)
+{
+ __cifs_put_super(sb);
+}
+
+#ifdef CONFIG_CIFS_DFS_UPCALL
+int match_target_ip(struct TCP_Server_Info *server,
+ const char *share, size_t share_len,
+ bool *result)
+{
+ int rc;
+ char *target, *tip = NULL;
+ struct sockaddr tipaddr;
+
+ *result = false;
+
+ target = kzalloc(share_len + 3, GFP_KERNEL);
+ if (!target) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ scnprintf(target, share_len + 3, "\\\\%.*s", (int)share_len, share);
+
+ cifs_dbg(FYI, "%s: target name: %s\n", __func__, target + 2);
+
+ rc = dns_resolve_server_name_to_ip(target, &tip);
+ if (rc < 0)
+ goto out;
+
+ cifs_dbg(FYI, "%s: target ip: %s\n", __func__, tip);
+
+ if (!cifs_convert_address(&tipaddr, tip, strlen(tip))) {
+ cifs_dbg(VFS, "%s: failed to convert target ip address\n",
+ __func__);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ *result = cifs_match_ipaddr((struct sockaddr *)&server->dstaddr,
+ &tipaddr);
+ cifs_dbg(FYI, "%s: ip addresses match: %u\n", __func__, *result);
+ rc = 0;
+
+out:
+ kfree(target);
+ kfree(tip);
+
+ return rc;
+}
+
+static void tcon_super_cb(struct super_block *sb, void *arg)
+{
+ struct super_cb_data *sd = arg;
+ struct cifs_tcon *tcon = sd->data;
+ struct cifs_sb_info *cifs_sb;
+
+ if (sd->sb)
+ return;
+
+ cifs_sb = CIFS_SB(sb);
+ if (tcon->dfs_path && cifs_sb->origin_fullpath &&
+ !strcasecmp(tcon->dfs_path, cifs_sb->origin_fullpath))
+ sd->sb = sb;
+}
+
+static inline struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon)
+{
+ return __cifs_get_super(tcon_super_cb, tcon);
+}
+
+static inline void cifs_put_tcon_super(struct super_block *sb)
+{
+ __cifs_put_super(sb);
+}
+#else
+static inline struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline void cifs_put_tcon_super(struct super_block *sb)
+{
+}
+#endif
+
+int update_super_prepath(struct cifs_tcon *tcon, char *prefix)
+{
+ struct super_block *sb;
+ struct cifs_sb_info *cifs_sb;
+ int rc = 0;
+
+ sb = cifs_get_tcon_super(tcon);
+ if (IS_ERR(sb))
+ return PTR_ERR(sb);
+
+ cifs_sb = CIFS_SB(sb);
+
+ kfree(cifs_sb->prepath);
+
+ if (prefix && *prefix) {
+ cifs_sb->prepath = kstrndup(prefix, strlen(prefix), GFP_ATOMIC);
+ if (!cifs_sb->prepath) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb));
+ } else
+ cifs_sb->prepath = NULL;
+
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;
+
+out:
+ cifs_put_tcon_super(sb);
+ return rc;
+}
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index 9b41436..0e728aa 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -881,6 +881,33 @@
return rc;
}
+int
+map_and_check_smb_error(struct mid_q_entry *mid, bool logErr)
+{
+ int rc;
+ struct smb_hdr *smb = (struct smb_hdr *)mid->resp_buf;
+
+ rc = map_smb_to_linux_error((char *)smb, logErr);
+ if (rc == -EACCES && !(smb->Flags2 & SMBFLG2_ERR_STATUS)) {
+ /* possible ERRBaduid */
+ __u8 class = smb->Status.DosError.ErrorClass;
+ __u16 code = le16_to_cpu(smb->Status.DosError.Error);
+
+ /* switch can be used to handle different errors */
+ if (class == ERRSRV && code == ERRbaduid) {
+ cifs_dbg(FYI, "Server returned 0x%x, reconnecting session...\n",
+ code);
+ spin_lock(&GlobalMid_Lock);
+ if (mid->server->tcpStatus != CifsExiting)
+ mid->server->tcpStatus = CifsNeedReconnect;
+ spin_unlock(&GlobalMid_Lock);
+ }
+ }
+
+ return rc;
+}
+
+
/*
* calculate the size of the SMB message based on the fixed header
* portion, the number of word parameters and the data portion of the message
@@ -957,15 +984,15 @@
sec = 2 * st->TwoSeconds;
min = st->Minutes;
if ((sec > 59) || (min > 59))
- cifs_dbg(VFS, "illegal time min %d sec %lld\n", min, sec);
+ cifs_dbg(VFS, "Invalid time min %d sec %lld\n", min, sec);
sec += (min * 60);
sec += 60 * 60 * st->Hours;
if (st->Hours > 24)
- cifs_dbg(VFS, "illegal hours %d\n", st->Hours);
+ cifs_dbg(VFS, "Invalid hours %d\n", st->Hours);
day = sd->Day;
month = sd->Month;
if (day < 1 || day > 31 || month < 1 || month > 12) {
- cifs_dbg(VFS, "illegal date, month %d day: %d\n", month, day);
+ cifs_dbg(VFS, "Invalid date, month %d day: %d\n", month, day);
day = clamp(day, 1, 31);
month = clamp(month, 1, 12);
}
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 3925a7b..799be3a 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -32,6 +32,7 @@
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
#include "cifsfs.h"
+#include "smb2proto.h"
/*
* To be safe - for UCS to UTF-8 with strings loaded with the rare long
@@ -52,7 +53,7 @@
return;
}
if (cf->invalidHandle)
- cifs_dbg(FYI, "invalid handle\n");
+ cifs_dbg(FYI, "Invalid handle\n");
if (cf->srch_inf.endOfSearch)
cifs_dbg(FYI, "end of search\n");
if (cf->srch_inf.emptyDir)
@@ -139,16 +140,61 @@
dput(dentry);
}
+static bool reparse_file_needs_reval(const struct cifs_fattr *fattr)
+{
+ if (!(fattr->cf_cifsattrs & ATTR_REPARSE))
+ return false;
+ /*
+ * The DFS tags should be only intepreted by server side as per
+ * MS-FSCC 2.1.2.1, but let's include them anyway.
+ *
+ * Besides, if cf_cifstag is unset (0), then we still need it to be
+ * revalidated to know exactly what reparse point it is.
+ */
+ switch (fattr->cf_cifstag) {
+ case IO_REPARSE_TAG_DFS:
+ case IO_REPARSE_TAG_DFSR:
+ case IO_REPARSE_TAG_SYMLINK:
+ case IO_REPARSE_TAG_NFS:
+ case 0:
+ return true;
+ }
+ return false;
+}
+
static void
cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
{
fattr->cf_uid = cifs_sb->mnt_uid;
fattr->cf_gid = cifs_sb->mnt_gid;
+ /*
+ * The IO_REPARSE_TAG_LX_ tags originally were used by WSL but they
+ * are preferred by the Linux client in some cases since, unlike
+ * the NFS reparse tag (or EAs), they don't require an extra query
+ * to determine which type of special file they represent.
+ * TODO: go through all documented reparse tags to see if we can
+ * reasonably map some of them to directories vs. files vs. symlinks
+ */
if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
fattr->cf_dtype = DT_DIR;
- } else {
+ } else if (fattr->cf_cifstag == IO_REPARSE_TAG_LX_SYMLINK) {
+ fattr->cf_mode |= S_IFLNK | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_LNK;
+ } else if (fattr->cf_cifstag == IO_REPARSE_TAG_LX_FIFO) {
+ fattr->cf_mode |= S_IFIFO | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_FIFO;
+ } else if (fattr->cf_cifstag == IO_REPARSE_TAG_AF_UNIX) {
+ fattr->cf_mode |= S_IFSOCK | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_SOCK;
+ } else if (fattr->cf_cifstag == IO_REPARSE_TAG_LX_CHR) {
+ fattr->cf_mode |= S_IFCHR | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_CHR;
+ } else if (fattr->cf_cifstag == IO_REPARSE_TAG_LX_BLK) {
+ fattr->cf_mode |= S_IFBLK | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_BLK;
+ } else { /* TODO: should we mark some other reparse points (like DFSR) as directories? */
fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
fattr->cf_dtype = DT_REG;
}
@@ -158,7 +204,7 @@
* is a symbolic link, DFS referral or a reparse point with a direct
* access like junctions, deduplicated files, NFS symlinks.
*/
- if (fattr->cf_cifsattrs & ATTR_REPARSE)
+ if (reparse_file_needs_reval(fattr))
fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
/* non-unix readdir doesn't provide nlink */
@@ -174,7 +220,8 @@
* may look wrong since the inodes may not have timed out by the time
* "ls" does a stat() call on them.
*/
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) ||
+ (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID))
fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL &&
@@ -194,19 +241,90 @@
}
}
+/* Fill a cifs_fattr struct with info from SMB_FIND_FILE_POSIX_INFO. */
+static void
+cifs_posix_to_fattr(struct cifs_fattr *fattr, struct smb2_posix_info *info,
+ struct cifs_sb_info *cifs_sb)
+{
+ struct smb2_posix_info_parsed parsed;
+
+ posix_info_parse(info, NULL, &parsed);
+
+ memset(fattr, 0, sizeof(*fattr));
+ fattr->cf_uniqueid = le64_to_cpu(info->Inode);
+ fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
+ fattr->cf_eof = le64_to_cpu(info->EndOfFile);
+
+ fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
+ fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
+ fattr->cf_ctime = cifs_NTtimeToUnix(info->CreationTime);
+
+ fattr->cf_nlink = le32_to_cpu(info->HardLinks);
+ fattr->cf_cifsattrs = le32_to_cpu(info->DosAttributes);
+
+ /*
+ * Since we set the inode type below we need to mask off
+ * to avoid strange results if bits set above.
+ * XXX: why not make server&client use the type bits?
+ */
+ fattr->cf_mode = le32_to_cpu(info->Mode) & ~S_IFMT;
+
+ cifs_dbg(FYI, "posix fattr: dev %d, reparse %d, mode %o\n",
+ le32_to_cpu(info->DeviceId),
+ le32_to_cpu(info->ReparseTag),
+ le32_to_cpu(info->Mode));
+
+ if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
+ fattr->cf_mode |= S_IFDIR;
+ fattr->cf_dtype = DT_DIR;
+ } else {
+ /*
+ * mark anything that is not a dir as regular
+ * file. special files should have the REPARSE
+ * attribute and will be marked as needing revaluation
+ */
+ fattr->cf_mode |= S_IFREG;
+ fattr->cf_dtype = DT_REG;
+ }
+
+ if (reparse_file_needs_reval(fattr))
+ fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
+
+ sid_to_id(cifs_sb, &parsed.owner, fattr, SIDOWNER);
+ sid_to_id(cifs_sb, &parsed.group, fattr, SIDGROUP);
+}
+
+static void __dir_info_to_fattr(struct cifs_fattr *fattr, const void *info)
+{
+ const FILE_DIRECTORY_INFO *fi = info;
+
+ memset(fattr, 0, sizeof(*fattr));
+ fattr->cf_cifsattrs = le32_to_cpu(fi->ExtFileAttributes);
+ fattr->cf_eof = le64_to_cpu(fi->EndOfFile);
+ fattr->cf_bytes = le64_to_cpu(fi->AllocationSize);
+ fattr->cf_createtime = le64_to_cpu(fi->CreationTime);
+ fattr->cf_atime = cifs_NTtimeToUnix(fi->LastAccessTime);
+ fattr->cf_ctime = cifs_NTtimeToUnix(fi->ChangeTime);
+ fattr->cf_mtime = cifs_NTtimeToUnix(fi->LastWriteTime);
+}
+
void
cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info,
struct cifs_sb_info *cifs_sb)
{
- memset(fattr, 0, sizeof(*fattr));
- fattr->cf_cifsattrs = le32_to_cpu(info->ExtFileAttributes);
- fattr->cf_eof = le64_to_cpu(info->EndOfFile);
- fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
- fattr->cf_createtime = le64_to_cpu(info->CreationTime);
- fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
- fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
- fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
+ __dir_info_to_fattr(fattr, info);
+ cifs_fill_common_info(fattr, cifs_sb);
+}
+static void cifs_fulldir_info_to_fattr(struct cifs_fattr *fattr,
+ SEARCH_ID_FULL_DIR_INFO *info,
+ struct cifs_sb_info *cifs_sb)
+{
+ __dir_info_to_fattr(fattr, info);
+
+ /* See MS-FSCC 2.4.18 FileIdFullDirectoryInformation */
+ if (fattr->cf_cifsattrs & ATTR_REPARSE)
+ fattr->cf_cifstag = le32_to_cpu(info->EaSize);
cifs_fill_common_info(fattr, cifs_sb);
}
@@ -264,11 +382,11 @@
*/
static int
-initiate_cifs_search(const unsigned int xid, struct file *file)
+initiate_cifs_search(const unsigned int xid, struct file *file,
+ char *full_path)
{
__u16 search_flags;
int rc = 0;
- char *full_path = NULL;
struct cifsFileInfo *cifsFile;
struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
struct tcon_link *tlink = NULL;
@@ -304,12 +422,6 @@
cifsFile->invalidHandle = true;
cifsFile->srch_inf.endOfSearch = false;
- full_path = build_path_from_dentry(file_dentry(file));
- if (full_path == NULL) {
- rc = -ENOMEM;
- goto error_exit;
- }
-
cifs_dbg(FYI, "Full path: %s start at: %lld\n", full_path, file->f_pos);
ffirst_retry:
@@ -318,6 +430,8 @@
/* if (cap_unix(tcon->ses) { */
if (tcon->unix_ext)
cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX;
+ else if (tcon->posix_extensions)
+ cifsFile->srch_inf.info_level = SMB_FIND_FILE_POSIX_INFO;
else if ((tcon->ses->capabilities &
tcon->ses->server->vals->cap_nt_find) == 0) {
cifsFile->srch_inf.info_level = SMB_FIND_FILE_INFO_STANDARD;
@@ -346,7 +460,6 @@
goto ffirst_retry;
}
error_exit:
- kfree(full_path);
cifs_put_tlink(tlink);
return rc;
}
@@ -380,7 +493,7 @@
u32 next_offset = le32_to_cpu(pDirInfo->NextEntryOffset);
if (old_entry + next_offset < old_entry) {
- cifs_dbg(VFS, "invalid offset %u\n", next_offset);
+ cifs_dbg(VFS, "Invalid offset %u\n", next_offset);
return NULL;
}
new_entry = old_entry + next_offset;
@@ -410,6 +523,23 @@
u64 ino;
};
+static void cifs_fill_dirent_posix(struct cifs_dirent *de,
+ const struct smb2_posix_info *info)
+{
+ struct smb2_posix_info_parsed parsed;
+
+ /* payload should have already been checked at this point */
+ if (posix_info_parse(info, NULL, &parsed) < 0) {
+ cifs_dbg(VFS, "Invalid POSIX info payload\n");
+ return;
+ }
+
+ de->name = parsed.name;
+ de->namelen = parsed.name_len;
+ de->resume_key = info->Ignored;
+ de->ino = le64_to_cpu(info->Inode);
+}
+
static void cifs_fill_dirent_unix(struct cifs_dirent *de,
const FILE_UNIX_INFO *info, bool is_unicode)
{
@@ -470,6 +600,9 @@
memset(de, 0, sizeof(*de));
switch (level) {
+ case SMB_FIND_FILE_POSIX_INFO:
+ cifs_fill_dirent_posix(de, info);
+ break;
case SMB_FIND_FILE_UNIX:
cifs_fill_dirent_unix(de, info, is_unicode);
break;
@@ -570,7 +703,8 @@
*/
static int
find_cifs_entry(const unsigned int xid, struct cifs_tcon *tcon, loff_t pos,
- struct file *file, char **current_entry, int *num_to_ret)
+ struct file *file, char *full_path,
+ char **current_entry, int *num_to_ret)
{
__u16 search_flags;
int rc = 0;
@@ -623,7 +757,7 @@
ntwrk_buf_start);
cfile->srch_inf.ntwrk_buf_start = NULL;
}
- rc = initiate_cifs_search(xid, file);
+ rc = initiate_cifs_search(xid, file, full_path);
if (rc) {
cifs_dbg(FYI, "error %d reinitiating a search on rewind\n",
rc);
@@ -745,6 +879,11 @@
}
switch (file_info->srch_inf.info_level) {
+ case SMB_FIND_FILE_POSIX_INFO:
+ cifs_posix_to_fattr(&fattr,
+ (struct smb2_posix_info *)find_entry,
+ cifs_sb);
+ break;
case SMB_FIND_FILE_UNIX:
cifs_unix_basic_to_fattr(&fattr,
&((FILE_UNIX_INFO *)find_entry)->basic,
@@ -755,6 +894,11 @@
(FIND_FILE_STANDARD_INFO *)find_entry,
cifs_sb);
break;
+ case SMB_FIND_FILE_ID_FULL_DIR_INFO:
+ cifs_fulldir_info_to_fattr(&fattr,
+ (SEARCH_ID_FULL_DIR_INFO *)find_entry,
+ cifs_sb);
+ break;
default:
cifs_dir_info_to_fattr(&fattr,
(FILE_DIRECTORY_INFO *)find_entry,
@@ -797,15 +941,22 @@
char *tmp_buf = NULL;
char *end_of_smb;
unsigned int max_len;
+ char *full_path = NULL;
xid = get_xid();
+ full_path = build_path_from_dentry(file_dentry(file));
+ if (full_path == NULL) {
+ rc = -ENOMEM;
+ goto rddir2_exit;
+ }
+
/*
* Ensure FindFirst doesn't fail before doing filldir() for '.' and
* '..'. Otherwise we won't be able to notify VFS in case of failure.
*/
if (file->private_data == NULL) {
- rc = initiate_cifs_search(xid, file);
+ rc = initiate_cifs_search(xid, file, full_path);
cifs_dbg(FYI, "initiate cifs search rc %d\n", rc);
if (rc)
goto rddir2_exit;
@@ -832,15 +983,15 @@
} */
tcon = tlink_tcon(cifsFile->tlink);
- rc = find_cifs_entry(xid, tcon, ctx->pos, file, ¤t_entry,
- &num_to_fill);
+ rc = find_cifs_entry(xid, tcon, ctx->pos, file, full_path,
+ ¤t_entry, &num_to_fill);
if (rc) {
cifs_dbg(FYI, "fce error %d\n", rc);
goto rddir2_exit;
} else if (current_entry != NULL) {
cifs_dbg(FYI, "entry %lld found\n", ctx->pos);
} else {
- cifs_dbg(FYI, "could not find entry\n");
+ cifs_dbg(FYI, "Could not find entry\n");
goto rddir2_exit;
}
cifs_dbg(FYI, "loop through %d times filling dir for net buf %p\n",
@@ -891,6 +1042,7 @@
kfree(tmp_buf);
rddir2_exit:
+ kfree(full_path);
free_xid(xid);
return rc;
}
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 30f841a..d58c5ff 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -31,6 +31,283 @@
#include <linux/utsname.h>
#include <linux/slab.h>
#include "cifs_spnego.h"
+#include "smb2proto.h"
+
+bool
+is_server_using_iface(struct TCP_Server_Info *server,
+ struct cifs_server_iface *iface)
+{
+ struct sockaddr_in *i4 = (struct sockaddr_in *)&iface->sockaddr;
+ struct sockaddr_in6 *i6 = (struct sockaddr_in6 *)&iface->sockaddr;
+ struct sockaddr_in *s4 = (struct sockaddr_in *)&server->dstaddr;
+ struct sockaddr_in6 *s6 = (struct sockaddr_in6 *)&server->dstaddr;
+
+ if (server->dstaddr.ss_family != iface->sockaddr.ss_family)
+ return false;
+ if (server->dstaddr.ss_family == AF_INET) {
+ if (s4->sin_addr.s_addr != i4->sin_addr.s_addr)
+ return false;
+ } else if (server->dstaddr.ss_family == AF_INET6) {
+ if (memcmp(&s6->sin6_addr, &i6->sin6_addr,
+ sizeof(i6->sin6_addr)) != 0)
+ return false;
+ } else {
+ /* unknown family.. */
+ return false;
+ }
+ return true;
+}
+
+bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface)
+{
+ int i;
+
+ for (i = 0; i < ses->chan_count; i++) {
+ if (is_server_using_iface(ses->chans[i].server, iface))
+ return true;
+ }
+ return false;
+}
+
+/* returns number of channels added */
+int cifs_try_adding_channels(struct cifs_ses *ses)
+{
+ int old_chan_count = ses->chan_count;
+ int left = ses->chan_max - ses->chan_count;
+ int i = 0;
+ int rc = 0;
+ int tries = 0;
+ struct cifs_server_iface *ifaces = NULL;
+ size_t iface_count;
+
+ if (left <= 0) {
+ cifs_dbg(FYI,
+ "ses already at max_channels (%zu), nothing to open\n",
+ ses->chan_max);
+ return 0;
+ }
+
+ if (ses->server->dialect < SMB30_PROT_ID) {
+ cifs_dbg(VFS, "multichannel is not supported on this protocol version, use 3.0 or above\n");
+ return 0;
+ }
+
+ if (!(ses->server->capabilities & SMB2_GLOBAL_CAP_MULTI_CHANNEL)) {
+ cifs_dbg(VFS, "server %s does not support multichannel\n", ses->server->hostname);
+ ses->chan_max = 1;
+ return 0;
+ }
+
+ /*
+ * Make a copy of the iface list at the time and use that
+ * instead so as to not hold the iface spinlock for opening
+ * channels
+ */
+ spin_lock(&ses->iface_lock);
+ iface_count = ses->iface_count;
+ if (iface_count <= 0) {
+ spin_unlock(&ses->iface_lock);
+ cifs_dbg(VFS, "no iface list available to open channels\n");
+ return 0;
+ }
+ ifaces = kmemdup(ses->iface_list, iface_count*sizeof(*ifaces),
+ GFP_ATOMIC);
+ if (!ifaces) {
+ spin_unlock(&ses->iface_lock);
+ return 0;
+ }
+ spin_unlock(&ses->iface_lock);
+
+ /*
+ * Keep connecting to same, fastest, iface for all channels as
+ * long as its RSS. Try next fastest one if not RSS or channel
+ * creation fails.
+ */
+ while (left > 0) {
+ struct cifs_server_iface *iface;
+
+ tries++;
+ if (tries > 3*ses->chan_max) {
+ cifs_dbg(FYI, "too many channel open attempts (%d channels left to open)\n",
+ left);
+ break;
+ }
+
+ iface = &ifaces[i];
+ if (is_ses_using_iface(ses, iface) && !iface->rss_capable) {
+ i = (i+1) % iface_count;
+ continue;
+ }
+
+ rc = cifs_ses_add_channel(ses, iface);
+ if (rc) {
+ cifs_dbg(FYI, "failed to open extra channel on iface#%d rc=%d\n",
+ i, rc);
+ i = (i+1) % iface_count;
+ continue;
+ }
+
+ cifs_dbg(FYI, "successfully opened new channel on iface#%d\n",
+ i);
+ left--;
+ }
+
+ kfree(ifaces);
+ return ses->chan_count - old_chan_count;
+}
+
+/*
+ * If server is a channel of ses, return the corresponding enclosing
+ * cifs_chan otherwise return NULL.
+ */
+struct cifs_chan *
+cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server)
+{
+ int i;
+
+ for (i = 0; i < ses->chan_count; i++) {
+ if (ses->chans[i].server == server)
+ return &ses->chans[i];
+ }
+ return NULL;
+}
+
+int
+cifs_ses_add_channel(struct cifs_ses *ses, struct cifs_server_iface *iface)
+{
+ struct cifs_chan *chan;
+ struct smb_vol vol = {NULL};
+ static const char unc_fmt[] = "\\%s\\foo";
+ char unc[sizeof(unc_fmt)+SERVER_NAME_LEN_WITH_NULL] = {0};
+ struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
+ struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
+ int rc;
+ unsigned int xid = get_xid();
+
+ if (iface->sockaddr.ss_family == AF_INET)
+ cifs_dbg(FYI, "adding channel to ses %p (speed:%zu bps rdma:%s ip:%pI4)\n",
+ ses, iface->speed, iface->rdma_capable ? "yes" : "no",
+ &ipv4->sin_addr);
+ else
+ cifs_dbg(FYI, "adding channel to ses %p (speed:%zu bps rdma:%s ip:%pI4)\n",
+ ses, iface->speed, iface->rdma_capable ? "yes" : "no",
+ &ipv6->sin6_addr);
+
+ /*
+ * Setup a smb_vol with mostly the same info as the existing
+ * session and overwrite it with the requested iface data.
+ *
+ * We need to setup at least the fields used for negprot and
+ * sesssetup.
+ *
+ * We only need the volume here, so we can reuse memory from
+ * the session and server without caring about memory
+ * management.
+ */
+
+ /* Always make new connection for now (TODO?) */
+ vol.nosharesock = true;
+
+ /* Auth */
+ vol.domainauto = ses->domainAuto;
+ vol.domainname = ses->domainName;
+ vol.username = ses->user_name;
+ vol.password = ses->password;
+ vol.sectype = ses->sectype;
+ vol.sign = ses->sign;
+
+ /* UNC and paths */
+ /* XXX: Use ses->server->hostname? */
+ sprintf(unc, unc_fmt, ses->serverName);
+ vol.UNC = unc;
+ vol.prepath = "";
+
+ /* Reuse same version as master connection */
+ vol.vals = ses->server->vals;
+ vol.ops = ses->server->ops;
+
+ vol.noblocksnd = ses->server->noblocksnd;
+ vol.noautotune = ses->server->noautotune;
+ vol.sockopt_tcp_nodelay = ses->server->tcp_nodelay;
+ vol.echo_interval = ses->server->echo_interval / HZ;
+ vol.max_credits = ses->server->max_credits;
+
+ /*
+ * This will be used for encoding/decoding user/domain/pw
+ * during sess setup auth.
+ *
+ * XXX: We use the default for simplicity but the proper way
+ * would be to use the one that ses used, which is not
+ * stored. This might break when dealing with non-ascii
+ * strings.
+ */
+ vol.local_nls = load_nls_default();
+
+ /* Use RDMA if possible */
+ vol.rdma = iface->rdma_capable;
+ memcpy(&vol.dstaddr, &iface->sockaddr, sizeof(struct sockaddr_storage));
+
+ /* reuse master con client guid */
+ memcpy(&vol.client_guid, ses->server->client_guid,
+ SMB2_CLIENT_GUID_SIZE);
+ vol.use_client_guid = true;
+
+ mutex_lock(&ses->session_mutex);
+
+ chan = ses->binding_chan = &ses->chans[ses->chan_count];
+ chan->server = cifs_get_tcp_session(&vol);
+ if (IS_ERR(chan->server)) {
+ rc = PTR_ERR(chan->server);
+ chan->server = NULL;
+ goto out;
+ }
+ spin_lock(&cifs_tcp_ses_lock);
+ chan->server->is_channel = true;
+ spin_unlock(&cifs_tcp_ses_lock);
+
+ /*
+ * We need to allocate the server crypto now as we will need
+ * to sign packets before we generate the channel signing key
+ * (we sign with the session key)
+ */
+ rc = smb311_crypto_shash_allocate(chan->server);
+ if (rc) {
+ cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
+ goto out;
+ }
+
+ ses->binding = true;
+ rc = cifs_negotiate_protocol(xid, ses);
+ if (rc)
+ goto out;
+
+ rc = cifs_setup_session(xid, ses, vol.local_nls);
+ if (rc)
+ goto out;
+
+ /* success, put it on the list
+ * XXX: sharing ses between 2 tcp servers is not possible, the
+ * way "internal" linked lists works in linux makes element
+ * only able to belong to one list
+ *
+ * the binding session is already established so the rest of
+ * the code should be able to look it up, no need to add the
+ * ses to the new server.
+ */
+
+ ses->chan_count++;
+ atomic_set(&ses->chan_seq, 0);
+out:
+ ses->binding = false;
+ ses->binding_chan = NULL;
+ mutex_unlock(&ses->session_mutex);
+
+ if (rc && chan->server)
+ cifs_put_tcp_session(chan->server, 0);
+ unload_nls(vol.local_nls);
+
+ return rc;
+}
static __u32 cifs_ssetup_hdr(struct cifs_ses *ses, SESSION_SETUP_ANDX *pSMB)
{
@@ -318,15 +595,15 @@
tioffset = le32_to_cpu(pblob->TargetInfoArray.BufferOffset);
tilen = le16_to_cpu(pblob->TargetInfoArray.Length);
if (tioffset > blob_len || tioffset + tilen > blob_len) {
- cifs_dbg(VFS, "tioffset + tilen too high %u + %u",
- tioffset, tilen);
+ cifs_dbg(VFS, "tioffset + tilen too high %u + %u\n",
+ tioffset, tilen);
return -EINVAL;
}
if (tilen) {
ses->auth_key.response = kmemdup(bcc_ptr + tioffset, tilen,
GFP_KERNEL);
if (!ses->auth_key.response) {
- cifs_dbg(VFS, "Challenge target info alloc failure");
+ cifs_dbg(VFS, "Challenge target info alloc failure\n");
return -ENOMEM;
}
ses->auth_key.len = tilen;
@@ -342,6 +619,7 @@
void build_ntlmssp_negotiate_blob(unsigned char *pbuffer,
struct cifs_ses *ses)
{
+ struct TCP_Server_Info *server = cifs_ses_server(ses);
NEGOTIATE_MESSAGE *sec_blob = (NEGOTIATE_MESSAGE *)pbuffer;
__u32 flags;
@@ -354,9 +632,9 @@
NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE |
NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC |
NTLMSSP_NEGOTIATE_SEAL;
- if (ses->server->sign)
+ if (server->sign)
flags |= NTLMSSP_NEGOTIATE_SIGN;
- if (!ses->server->session_estab || ses->ntlmssp->sesskey_per_smbsess)
+ if (!server->session_estab || ses->ntlmssp->sesskey_per_smbsess)
flags |= NTLMSSP_NEGOTIATE_KEY_XCH;
sec_blob->NegotiateFlags = cpu_to_le32(flags);
@@ -527,7 +805,7 @@
if ((server->sec_kerberos || server->sec_mskerberos) &&
(global_secflags & CIFSSEC_MAY_KRB5))
return Kerberos;
- /* Fallthrough */
+ fallthrough;
default:
return Unspecified;
}
@@ -544,7 +822,7 @@
default:
break;
}
- /* Fallthrough - to attempt LANMAN authentication next */
+ fallthrough; /* to attempt LANMAN authentication next */
case CIFS_NEGFLAVOR_LANMAN:
switch (requested) {
case LANMAN:
@@ -552,7 +830,7 @@
case Unspecified:
if (global_secflags & CIFSSEC_MAY_LANMAN)
return LANMAN;
- /* Fallthrough */
+ fallthrough;
default:
return Unspecified;
}
@@ -667,8 +945,7 @@
struct kvec rsp_iov = { NULL, 0 };
count = sess_data->iov[1].iov_len + sess_data->iov[2].iov_len;
- smb_buf->smb_buf_length =
- cpu_to_be32(be32_to_cpu(smb_buf->smb_buf_length) + count);
+ be32_add_cpu(&smb_buf->smb_buf_length, count);
put_bcc(count, smb_buf);
rc = SendReceive2(sess_data->xid, sess_data->ses,
@@ -718,7 +995,7 @@
/* Calculate hash with password and copy into bcc_ptr.
* Encryption Key (stored as in cryptkey) gets used if the
- * security mode bit in Negottiate Protocol response states
+ * security mode bit in Negotiate Protocol response states
* to use challenge/response method (i.e. Password bit is 1).
*/
rc = calc_lanman_hash(ses->password, ses->server->cryptkey,
@@ -1051,9 +1328,8 @@
* sending us a response in an expected form
*/
if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) {
- cifs_dbg(VFS,
- "incorrect version of cifs.upcall (expected %d but got %d)",
- CIFS_SPNEGO_UPCALL_VERSION, msg->version);
+ cifs_dbg(VFS, "incorrect version of cifs.upcall (expected %d but got %d)\n",
+ CIFS_SPNEGO_UPCALL_VERSION, msg->version);
rc = -EKEYREJECTED;
goto out_put_spnego_key;
}
@@ -1061,8 +1337,8 @@
ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len,
GFP_KERNEL);
if (!ses->auth_key.response) {
- cifs_dbg(VFS, "Kerberos can't allocate (%u bytes) memory",
- msg->sesskey_len);
+ cifs_dbg(VFS, "Kerberos can't allocate (%u bytes) memory\n",
+ msg->sesskey_len);
rc = -ENOMEM;
goto out_put_spnego_key;
}
@@ -1405,8 +1681,7 @@
type = cifs_select_sectype(ses->server, ses->sectype);
cifs_dbg(FYI, "sess setup type %d\n", type);
if (type == Unspecified) {
- cifs_dbg(VFS,
- "Unable to select appropriate authentication method!");
+ cifs_dbg(VFS, "Unable to select appropriate authentication method!\n");
return -EINVAL;
}
@@ -1436,7 +1711,6 @@
#else
cifs_dbg(VFS, "Kerberos negotiated but upcall support disabled!\n");
return -ENOSYS;
- break;
#endif /* CONFIG_CIFS_UPCALL */
case RawNTLMSSP:
sess_data->func = sess_auth_rawntlmssp_negotiate;
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index e523c05..80287c2 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -247,7 +247,7 @@
/* check for plausible wct, bcc and t2 data and parm sizes */
/* check for parm and data offset going beyond end of smb */
if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
- cifs_dbg(FYI, "invalid transact2 word count\n");
+ cifs_dbg(FYI, "Invalid transact2 word count\n");
return -EINVAL;
}
@@ -504,7 +504,8 @@
}
static void
-cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
+cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb)
{
CIFSSMBQFSDeviceInfo(xid, tcon);
CIFSSMBQFSAttributeInfo(xid, tcon);
@@ -565,7 +566,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = FILE_READ_ATTRIBUTES;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.disposition = FILE_OPEN;
oparms.path = full_path;
oparms.fid = &fid;
@@ -687,7 +688,7 @@
dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
info.Attributes = cpu_to_le32(dosattrs);
rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
- cifs_remap(cifs_sb));
+ cifs_sb);
if (rc == 0)
cifsInode->cifsAttrs = dosattrs;
}
@@ -782,7 +783,7 @@
tcon = tlink_tcon(tlink);
rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
- cifs_remap(cifs_sb));
+ cifs_sb);
if (rc == 0) {
cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
goto out;
@@ -793,7 +794,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
- oparms.create_options = CREATE_NOT_DIR;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_OPEN;
oparms.path = full_path;
oparms.fid = &fid;
@@ -872,7 +873,7 @@
static int
cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *buf)
+ struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
{
int rc = -EOPNOTSUPP;
@@ -970,7 +971,8 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = FILE_READ_ATTRIBUTES;
- oparms.create_options = OPEN_REPARSE_POINT;
+ oparms.create_options = cifs_create_options(cifs_sb,
+ OPEN_REPARSE_POINT);
oparms.disposition = FILE_OPEN;
oparms.path = full_path;
oparms.fid = &fid;
@@ -1029,7 +1031,6 @@
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct inode *newinode = NULL;
int rc = -EPERM;
- int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
FILE_ALL_INFO *buf = NULL;
struct cifs_io_parms io_parms;
__u32 oplock = 0;
@@ -1090,13 +1091,11 @@
goto out;
}
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
+ CREATE_OPTION_SPECIAL);
oparms.disposition = FILE_CREATE;
oparms.path = full_path;
oparms.fid = &fid;
diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index afe1f03..2fa3ba3 100644
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -62,7 +62,7 @@
smb2_oplock = SMB2_OPLOCK_LEVEL_BATCH;
rc = SMB2_open(xid, oparms, smb2_path, &smb2_oplock, smb2_data, NULL,
- NULL);
+ NULL, NULL);
if (rc)
goto out;
@@ -152,7 +152,12 @@
(li->offset + li->length))
continue;
if (current->tgid != li->pid)
- continue;
+ /*
+ * flock and OFD lock are associated with an open
+ * file description, not the process.
+ */
+ if (!(flock->fl_flags & (FL_FLOCK | FL_OFDLCK)))
+ continue;
if (cinode->can_cache_brlcks) {
/*
* We can cache brlock requests - simply remove a lock
diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h
index dd10f0c..d9a990c 100644
--- a/fs/cifs/smb2glob.h
+++ b/fs/cifs/smb2glob.h
@@ -45,6 +45,7 @@
#define SMB2_OP_HARDLINK 8
#define SMB2_OP_SET_EOF 9
#define SMB2_OP_RMDIR 10
+#define SMB2_OP_POSIX_QUERY_INFO 11
/* Used when constructing chained read requests. */
#define CHAINED_REQUEST 1
@@ -57,6 +58,8 @@
#define SMB2_HMACSHA256_SIZE (32)
#define SMB2_CMACAES_SIZE (16)
#define SMB3_SIGNKEY_SIZE (16)
+#define SMB3_GCM128_CRYPTKEY_SIZE (16)
+#define SMB3_GCM256_CRYPTKEY_SIZE (32)
/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index f2a6f7f..a718dc7 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -47,6 +47,18 @@
}
+struct cop_vars {
+ struct cifs_open_parms oparms;
+ struct kvec rsp_iov[3];
+ struct smb_rqst rqst[3];
+ struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
+ struct kvec qi_iov[1];
+ struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
+ struct kvec close_iov[1];
+ struct smb2_file_rename_info rename_info;
+ struct smb2_file_link_info link_info;
+};
+
static int
smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path,
@@ -54,35 +66,36 @@
__u32 create_options, umode_t mode, void *ptr, int command,
struct cifsFileInfo *cfile)
{
+ struct cop_vars *vars = NULL;
+ struct kvec *rsp_iov;
+ struct smb_rqst *rqst;
int rc;
__le16 *utf16_path = NULL;
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
- struct cifs_open_parms oparms;
struct cifs_fid fid;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server;
int num_rqst = 0;
- struct smb_rqst rqst[3];
int resp_buftype[3];
- struct kvec rsp_iov[3];
- struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
- struct kvec qi_iov[1];
- struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
- struct kvec close_iov[1];
struct smb2_query_info_rsp *qi_rsp = NULL;
int flags = 0;
__u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
unsigned int size[2];
void *data[2];
- struct smb2_file_rename_info rename_info;
- struct smb2_file_link_info link_info;
int len;
+ vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
+ if (vars == NULL)
+ return -ENOMEM;
+ rqst = &vars->rqst[0];
+ rsp_iov = &vars->rsp_iov[0];
+
+ server = cifs_pick_channel(ses);
+
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
- memset(rqst, 0, sizeof(rqst));
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
- memset(rsp_iov, 0, sizeof(rsp_iov));
/* We already have a handle so we can skip the open */
if (cfile)
@@ -95,20 +108,19 @@
goto finished;
}
- oparms.tcon = tcon;
- oparms.desired_access = desired_access;
- oparms.disposition = create_disposition;
- oparms.create_options = create_options;
- if (backup_cred(cifs_sb))
- oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
- oparms.fid = &fid;
- oparms.reconnect = false;
- oparms.mode = mode;
+ vars->oparms.tcon = tcon;
+ vars->oparms.desired_access = desired_access;
+ vars->oparms.disposition = create_disposition;
+ vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
+ vars->oparms.fid = &fid;
+ vars->oparms.reconnect = false;
+ vars->oparms.mode = mode;
+ vars->oparms.cifs_sb = cifs_sb;
- memset(&open_iov, 0, sizeof(open_iov));
- rqst[num_rqst].rq_iov = open_iov;
+ rqst[num_rqst].rq_iov = &vars->open_iov[0];
rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
- rc = SMB2_open_init(tcon, &rqst[num_rqst], &oplock, &oparms,
+ rc = SMB2_open_init(tcon, server,
+ &rqst[num_rqst], &oplock, &vars->oparms,
utf16_path);
kfree(utf16_path);
if (rc)
@@ -122,12 +134,12 @@
/* Operation */
switch (command) {
case SMB2_OP_QUERY_INFO:
- memset(&qi_iov, 0, sizeof(qi_iov));
- rqst[num_rqst].rq_iov = qi_iov;
+ rqst[num_rqst].rq_iov = &vars->qi_iov[0];
rqst[num_rqst].rq_nvec = 1;
if (cfile)
- rc = SMB2_query_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[num_rqst],
cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FILE_ALL_INFORMATION,
@@ -135,10 +147,11 @@
sizeof(struct smb2_file_all_info) +
PATH_MAX * 2, 0, NULL);
else {
- rc = SMB2_query_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[num_rqst],
COMPOUND_FID,
COMPOUND_FID,
- FILE_ALL_INFORMATION,
+ FILE_ALL_INFORMATION,
SMB2_O_INFO_FILE, 0,
sizeof(struct smb2_file_all_info) +
PATH_MAX * 2, 0, NULL);
@@ -154,6 +167,40 @@
trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
full_path);
break;
+ case SMB2_OP_POSIX_QUERY_INFO:
+ rqst[num_rqst].rq_iov = &vars->qi_iov[0];
+ rqst[num_rqst].rq_nvec = 1;
+
+ if (cfile)
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[num_rqst],
+ cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid,
+ SMB_FIND_FILE_POSIX_INFO,
+ SMB2_O_INFO_FILE, 0,
+ /* TBD: fix following to allow for longer SIDs */
+ sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
+ (sizeof(struct cifs_sid) * 2), 0, NULL);
+ else {
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[num_rqst],
+ COMPOUND_FID,
+ COMPOUND_FID,
+ SMB_FIND_FILE_POSIX_INFO,
+ SMB2_O_INFO_FILE, 0,
+ sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
+ (sizeof(struct cifs_sid) * 2), 0, NULL);
+ if (!rc) {
+ smb2_set_next_command(tcon, &rqst[num_rqst]);
+ smb2_set_related(&rqst[num_rqst]);
+ }
+ }
+
+ if (rc)
+ goto finished;
+ num_rqst++;
+ trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
+ break;
case SMB2_OP_DELETE:
trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
break;
@@ -165,14 +212,14 @@
trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_RMDIR:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 1;
size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
data[0] = &delete_pending[0];
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_DISPOSITION_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -183,14 +230,14 @@
trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_SET_EOF:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 1;
size[0] = 8; /* sizeof __le64 */
data[0] = ptr;
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_END_OF_FILE_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -201,8 +248,7 @@
trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_SET_INFO:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 1;
@@ -210,13 +256,15 @@
data[0] = ptr;
if (cfile)
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
cfile->fid.persistent_fid,
cfile->fid.volatile_fid, current->tgid,
FILE_BASIC_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
else {
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_BASIC_INFORMATION,
@@ -234,30 +282,31 @@
full_path);
break;
case SMB2_OP_RENAME:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 2;
len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
- rename_info.ReplaceIfExists = 1;
- rename_info.RootDirectory = 0;
- rename_info.FileNameLength = cpu_to_le32(len);
+ vars->rename_info.ReplaceIfExists = 1;
+ vars->rename_info.RootDirectory = 0;
+ vars->rename_info.FileNameLength = cpu_to_le32(len);
size[0] = sizeof(struct smb2_file_rename_info);
- data[0] = &rename_info;
+ data[0] = &vars->rename_info;
size[1] = len + 2 /* null */;
data[1] = (__le16 *)ptr;
if (cfile)
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
current->tgid, FILE_RENAME_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
else {
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
COMPOUND_FID, COMPOUND_FID,
current->tgid, FILE_RENAME_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -272,23 +321,23 @@
trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_HARDLINK:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 2;
len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
- link_info.ReplaceIfExists = 0;
- link_info.RootDirectory = 0;
- link_info.FileNameLength = cpu_to_le32(len);
+ vars->link_info.ReplaceIfExists = 0;
+ vars->link_info.RootDirectory = 0;
+ vars->link_info.FileNameLength = cpu_to_le32(len);
size[0] = sizeof(struct smb2_file_link_info);
- data[0] = &link_info;
+ data[0] = &vars->link_info;
size[1] = len + 2 /* null */;
data[1] = (__le16 *)ptr;
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_LINK_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -309,11 +358,12 @@
if (cfile)
goto after_close;
/* Close */
- memset(&close_iov, 0, sizeof(close_iov));
- rqst[num_rqst].rq_iov = close_iov;
+ flags |= CIFS_CP_CREATE_CLOSE_OP;
+ rqst[num_rqst].rq_iov = &vars->close_iov[0];
rqst[num_rqst].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[num_rqst], COMPOUND_FID,
- COMPOUND_FID);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[num_rqst], COMPOUND_FID,
+ COMPOUND_FID, false);
smb2_set_related(&rqst[num_rqst]);
if (rc)
goto finished;
@@ -323,11 +373,13 @@
if (cfile) {
cifsFileInfo_put(cfile);
cfile = NULL;
- rc = compound_send_recv(xid, ses, flags, num_rqst - 2,
+ rc = compound_send_recv(xid, ses, server,
+ flags, num_rqst - 2,
&rqst[1], &resp_buftype[1],
&rsp_iov[1]);
} else
- rc = compound_send_recv(xid, ses, flags, num_rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, num_rqst,
rqst, resp_buftype,
rsp_iov);
@@ -337,8 +389,7 @@
SMB2_open_free(&rqst[0]);
if (rc == -EREMCHG) {
- printk_once(KERN_WARNING "server share %s deleted\n",
- tcon->treeName);
+ pr_warn_once("server share %s deleted\n", tcon->treeName);
tcon->need_reconnect = true;
}
@@ -364,6 +415,24 @@
trace_smb3_query_info_compound_done(xid, ses->Suid,
tcon->tid);
break;
+ case SMB2_OP_POSIX_QUERY_INFO:
+ if (rc == 0) {
+ qi_rsp = (struct smb2_query_info_rsp *)
+ rsp_iov[1].iov_base;
+ rc = smb2_validate_and_copy_iov(
+ le16_to_cpu(qi_rsp->OutputBufferOffset),
+ le32_to_cpu(qi_rsp->OutputBufferLength),
+ &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
+ }
+ if (rqst[1].rq_iov)
+ SMB2_query_info_free(&rqst[1]);
+ if (rqst[2].rq_iov)
+ SMB2_close_free(&rqst[2]);
+ if (rc)
+ trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
+ else
+ trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
+ break;
case SMB2_OP_DELETE:
if (rc)
trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
@@ -421,6 +490,7 @@
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
+ kfree(vars);
return rc;
}
@@ -437,17 +507,17 @@
int
smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path,
- FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
+ FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
{
int rc;
struct smb2_file_all_info *smb2_data;
__u32 create_options = 0;
- struct cifs_fid fid;
bool no_cached_open = tcon->nohandlecache;
struct cifsFileInfo *cfile;
+ struct cached_fid *cfid = NULL;
*adjust_tz = false;
- *symlink = false;
+ *reparse = false;
smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
GFP_KERNEL);
@@ -456,7 +526,7 @@
/* If it is a root and its handle is cached then use it */
if (!strlen(full_path) && !no_cached_open) {
- rc = open_shroot(xid, tcon, &fid);
+ rc = open_shroot(xid, tcon, cifs_sb, &cfid);
if (rc)
goto out;
@@ -464,24 +534,22 @@
move_smb2_info_to_cifs(data,
&tcon->crfid.file_all_info);
} else {
- rc = SMB2_query_info(xid, tcon, fid.persistent_fid,
- fid.volatile_fid, smb2_data);
+ rc = SMB2_query_info(xid, tcon,
+ cfid->fid->persistent_fid,
+ cfid->fid->volatile_fid, smb2_data);
if (!rc)
move_smb2_info_to_cifs(data, smb2_data);
}
- close_shroot(&tcon->crfid);
+ close_shroot(cfid);
goto out;
}
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
cifs_get_readable_path(tcon, full_path, &cfile);
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
if (rc == -EOPNOTSUPP) {
- *symlink = true;
+ *reparse = true;
create_options |= OPEN_REPARSE_POINT;
/* Failed on a symbolic link - query a reparse point info */
@@ -499,6 +567,59 @@
return rc;
}
+
+int
+smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path,
+ struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
+{
+ int rc;
+ __u32 create_options = 0;
+ struct cifsFileInfo *cfile;
+ struct smb311_posix_qinfo *smb2_data;
+
+ *adjust_tz = false;
+ *reparse = false;
+
+ /* BB TODO: Make struct larger when add support for parsing owner SIDs */
+ smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
+ GFP_KERNEL);
+ if (smb2_data == NULL)
+ return -ENOMEM;
+
+ /*
+ * BB TODO: Add support for using the cached root handle.
+ * Create SMB2_query_posix_info worker function to do non-compounded query
+ * when we already have an open file handle for this. For now this is fast enough
+ * (always using the compounded version).
+ */
+
+ cifs_get_readable_path(tcon, full_path, &cfile);
+ rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
+ FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
+ ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
+ if (rc == -EOPNOTSUPP) {
+ /* BB TODO: When support for special files added to Samba re-verify this path */
+ *reparse = true;
+ create_options |= OPEN_REPARSE_POINT;
+
+ /* Failed on a symbolic link - query a reparse point info */
+ rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
+ FILE_READ_ATTRIBUTES, FILE_OPEN,
+ create_options, ACL_NO_MODE,
+ smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
+ }
+ if (rc)
+ goto out;
+
+ /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
+ memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
+
+out:
+ kfree(smb2_data);
+ return rc;
+}
+
int
smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
struct cifs_tcon *tcon, const char *name,
diff --git a/fs/cifs/smb2maperror.c b/fs/cifs/smb2maperror.c
index 7fde377..c775682 100644
--- a/fs/cifs/smb2maperror.c
+++ b/fs/cifs/smb2maperror.c
@@ -488,7 +488,7 @@
{STATUS_PIPE_CONNECTED, -EIO, "STATUS_PIPE_CONNECTED"},
{STATUS_PIPE_LISTENING, -EIO, "STATUS_PIPE_LISTENING"},
{STATUS_INVALID_READ_MODE, -EIO, "STATUS_INVALID_READ_MODE"},
- {STATUS_IO_TIMEOUT, -ETIMEDOUT, "STATUS_IO_TIMEOUT"},
+ {STATUS_IO_TIMEOUT, -EAGAIN, "STATUS_IO_TIMEOUT"},
{STATUS_FILE_FORCED_CLOSED, -EIO, "STATUS_FILE_FORCED_CLOSED"},
{STATUS_PROFILING_NOT_STARTED, -EIO, "STATUS_PROFILING_NOT_STARTED"},
{STATUS_PROFILING_NOT_STOPPED, -EIO, "STATUS_PROFILING_NOT_STOPPED"},
@@ -814,7 +814,7 @@
{STATUS_INVALID_VARIANT, -EIO, "STATUS_INVALID_VARIANT"},
{STATUS_DOMAIN_CONTROLLER_NOT_FOUND, -EIO,
"STATUS_DOMAIN_CONTROLLER_NOT_FOUND"},
- {STATUS_ACCOUNT_LOCKED_OUT, -EIO, "STATUS_ACCOUNT_LOCKED_OUT"},
+ {STATUS_ACCOUNT_LOCKED_OUT, -EACCES, "STATUS_ACCOUNT_LOCKED_OUT"},
{STATUS_HANDLE_NOT_CLOSABLE, -EIO, "STATUS_HANDLE_NOT_CLOSABLE"},
{STATUS_CONNECTION_REFUSED, -EIO, "STATUS_CONNECTION_REFUSED"},
{STATUS_GRACEFUL_DISCONNECT, -EIO, "STATUS_GRACEFUL_DISCONNECT"},
diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index 7177720..be3df90 100644
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -29,6 +29,7 @@
#include "cifs_unicode.h"
#include "smb2status.h"
#include "smb2glob.h"
+#include "nterr.h"
static int
check_smb2_hdr(struct smb2_sync_hdr *shdr, __u64 mid)
@@ -93,6 +94,8 @@
/* SMB2_OPLOCK_BREAK */ cpu_to_le16(24)
};
+#define SMB311_NEGPROT_BASE_SIZE (sizeof(struct smb2_sync_hdr) + sizeof(struct smb2_negotiate_rsp))
+
static __u32 get_neg_ctxt_len(struct smb2_sync_hdr *hdr, __u32 len,
__u32 non_ctxlen)
{
@@ -108,15 +111,21 @@
/* Make sure that negotiate contexts start after gss security blob */
nc_offset = le32_to_cpu(pneg_rsp->NegotiateContextOffset);
- if (nc_offset < non_ctxlen) {
- printk_once(KERN_WARNING "invalid negotiate context offset\n");
+ if (nc_offset + 1 < non_ctxlen) {
+ pr_warn_once("Invalid negotiate context offset %d\n", nc_offset);
return 0;
- }
- size_of_pad_before_neg_ctxts = nc_offset - non_ctxlen;
+ } else if (nc_offset + 1 == non_ctxlen) {
+ cifs_dbg(FYI, "no SPNEGO security blob in negprot rsp\n");
+ size_of_pad_before_neg_ctxts = 0;
+ } else if (non_ctxlen == SMB311_NEGPROT_BASE_SIZE)
+ /* has padding, but no SPNEGO blob */
+ size_of_pad_before_neg_ctxts = nc_offset - non_ctxlen + 1;
+ else
+ size_of_pad_before_neg_ctxts = nc_offset - non_ctxlen;
/* Verify that at least minimal negotiate contexts fit within frame */
if (len < nc_offset + (neg_count * sizeof(struct smb2_neg_context))) {
- printk_once(KERN_WARNING "negotiate context goes beyond end\n");
+ pr_warn_once("negotiate context goes beyond end\n");
return 0;
}
@@ -189,14 +198,14 @@
return 1;
if (shdr->StructureSize != SMB2_HEADER_STRUCTURE_SIZE) {
- cifs_dbg(VFS, "Illegal structure size %u\n",
+ cifs_dbg(VFS, "Invalid structure size %u\n",
le16_to_cpu(shdr->StructureSize));
return 1;
}
command = le16_to_cpu(shdr->Command);
if (command >= NUMBER_OF_SMB2_COMMANDS) {
- cifs_dbg(VFS, "Illegal SMB2 command %d\n", command);
+ cifs_dbg(VFS, "Invalid SMB2 command %d\n", command);
return 1;
}
@@ -204,7 +213,7 @@
if (command != SMB2_OPLOCK_BREAK_HE && (shdr->Status == 0 ||
pdu->StructureSize2 != SMB2_ERROR_STRUCTURE_SIZE2)) {
/* error packets have 9 byte structure size */
- cifs_dbg(VFS, "Illegal response size %u for command %d\n",
+ cifs_dbg(VFS, "Invalid response size %u for command %d\n",
le16_to_cpu(pdu->StructureSize2), command);
return 1;
} else if (command == SMB2_OPLOCK_BREAK_HE
@@ -212,7 +221,7 @@
&& (le16_to_cpu(pdu->StructureSize2) != 44)
&& (le16_to_cpu(pdu->StructureSize2) != 36)) {
/* special case for SMB2.1 lease break message */
- cifs_dbg(VFS, "Illegal response size %d for oplock break\n",
+ cifs_dbg(VFS, "Invalid response size %d for oplock break\n",
le16_to_cpu(pdu->StructureSize2));
return 1;
}
@@ -249,16 +258,10 @@
* of junk. Other servers match RFC1001 len to actual
* SMB2/SMB3 frame length (header + smb2 response specific data)
* Some windows servers also pad up to 8 bytes when compounding.
- * If pad is longer than eight bytes, log the server behavior
- * (once), since may indicate a problem but allow it and continue
- * since the frame is parseable.
*/
- if (clc_len < len) {
- pr_warn_once(
- "srv rsp padded more than expected. Length %d not %d for cmd:%d mid:%llu\n",
- len, clc_len, command, mid);
+ if (clc_len < len)
return 0;
- }
+
pr_warn_once(
"srv rsp too short, len %d not %d. cmd:%d mid:%llu\n",
len, clc_len, command, mid);
@@ -359,9 +362,13 @@
((struct smb2_ioctl_rsp *)shdr)->OutputCount);
break;
case SMB2_CHANGE_NOTIFY:
+ *off = le16_to_cpu(
+ ((struct smb2_change_notify_rsp *)shdr)->OutputBufferOffset);
+ *len = le32_to_cpu(
+ ((struct smb2_change_notify_rsp *)shdr)->OutputBufferLength);
+ break;
default:
- /* BB FIXME for unimplemented cases above */
- cifs_dbg(VFS, "no length check for command\n");
+ cifs_dbg(VFS, "no length check for command %d\n", le16_to_cpu(shdr->Command));
break;
}
@@ -747,19 +754,35 @@
{
struct close_cancelled_open *cancelled = container_of(work,
struct close_cancelled_open, work);
+ struct cifs_tcon *tcon = cancelled->tcon;
+ int rc;
- cifs_dbg(VFS, "Close unmatched open\n");
+ if (cancelled->mid)
+ cifs_tcon_dbg(VFS, "Close unmatched open for MID:%llx\n",
+ cancelled->mid);
+ else
+ cifs_tcon_dbg(VFS, "Close interrupted close\n");
- SMB2_close(0, cancelled->tcon, cancelled->fid.persistent_fid,
- cancelled->fid.volatile_fid);
- cifs_put_tcon(cancelled->tcon);
+ rc = SMB2_close(0, tcon, cancelled->fid.persistent_fid,
+ cancelled->fid.volatile_fid);
+ if (rc)
+ cifs_tcon_dbg(VFS, "Close cancelled mid failed rc:%d\n", rc);
+
+ cifs_put_tcon(tcon);
kfree(cancelled);
}
-/* Caller should already has an extra reference to @tcon */
+/*
+ * Caller should already has an extra reference to @tcon
+ * This function is used to queue work to close a handle to prevent leaks
+ * on the server.
+ * We handle two cases. If an open was interrupted after we sent the
+ * SMB2_CREATE to the server but before we processed the reply, and second
+ * if a close was interrupted before we sent the SMB2_CLOSE to the server.
+ */
static int
-__smb2_handle_cancelled_close(struct cifs_tcon *tcon, __u64 persistent_fid,
- __u64 volatile_fid)
+__smb2_handle_cancelled_cmd(struct cifs_tcon *tcon, __u16 cmd, __u64 mid,
+ __u64 persistent_fid, __u64 volatile_fid)
{
struct close_cancelled_open *cancelled;
@@ -770,6 +793,8 @@
cancelled->fid.persistent_fid = persistent_fid;
cancelled->fid.volatile_fid = volatile_fid;
cancelled->tcon = tcon;
+ cancelled->cmd = cmd;
+ cancelled->mid = mid;
INIT_WORK(&cancelled->work, smb2_cancelled_close_fid);
WARN_ON(queue_work(cifsiod_wq, &cancelled->work) == false);
@@ -784,10 +809,25 @@
cifs_dbg(FYI, "%s: tc_count=%d\n", __func__, tcon->tc_count);
spin_lock(&cifs_tcp_ses_lock);
+ if (tcon->tc_count <= 0) {
+ struct TCP_Server_Info *server = NULL;
+
+ WARN_ONCE(tcon->tc_count < 0, "tcon refcount is negative");
+ spin_unlock(&cifs_tcp_ses_lock);
+
+ if (tcon->ses)
+ server = tcon->ses->server;
+
+ cifs_server_dbg(FYI, "tid=%u: tcon is closing, skipping async close retry of fid %llu %llu\n",
+ tcon->tid, persistent_fid, volatile_fid);
+
+ return 0;
+ }
tcon->tc_count++;
spin_unlock(&cifs_tcp_ses_lock);
- rc = __smb2_handle_cancelled_close(tcon, persistent_fid, volatile_fid);
+ rc = __smb2_handle_cancelled_cmd(tcon, SMB2_CLOSE_HE, 0,
+ persistent_fid, volatile_fid);
if (rc)
cifs_put_tcon(tcon);
@@ -795,14 +835,14 @@
}
int
-smb2_handle_cancelled_mid(char *buffer, struct TCP_Server_Info *server)
+smb2_handle_cancelled_mid(struct mid_q_entry *mid, struct TCP_Server_Info *server)
{
- struct smb2_sync_hdr *sync_hdr = (struct smb2_sync_hdr *)buffer;
- struct smb2_create_rsp *rsp = (struct smb2_create_rsp *)buffer;
+ struct smb2_sync_hdr *sync_hdr = mid->resp_buf;
+ struct smb2_create_rsp *rsp = mid->resp_buf;
struct cifs_tcon *tcon;
int rc;
- if (sync_hdr->Command != SMB2_CREATE ||
+ if ((mid->optype & CIFS_CP_CREATE_CLOSE_OP) || sync_hdr->Command != SMB2_CREATE ||
sync_hdr->Status != STATUS_SUCCESS)
return 0;
@@ -811,8 +851,11 @@
if (!tcon)
return -ENOENT;
- rc = __smb2_handle_cancelled_close(tcon, rsp->PersistentFileId,
- rsp->VolatileFileId);
+ rc = __smb2_handle_cancelled_cmd(tcon,
+ le16_to_cpu(sync_hdr->Command),
+ le64_to_cpu(sync_hdr->MessageId),
+ rsp->PersistentFileId,
+ rsp->VolatileFileId);
if (rc)
cifs_put_tcon(tcon);
@@ -831,33 +874,47 @@
int i, rc;
struct sdesc *d;
struct smb2_sync_hdr *hdr;
+ struct TCP_Server_Info *server = cifs_ses_server(ses);
- if (ses->server->tcpStatus == CifsGood) {
- /* skip non smb311 connections */
- if (ses->server->dialect != SMB311_PROT_ID)
- return 0;
+ hdr = (struct smb2_sync_hdr *)iov[0].iov_base;
+ /* neg prot are always taken */
+ if (hdr->Command == SMB2_NEGOTIATE)
+ goto ok;
- /* skip last sess setup response */
- hdr = (struct smb2_sync_hdr *)iov[0].iov_base;
- if (hdr->Flags & SMB2_FLAGS_SIGNED)
- return 0;
- }
+ /*
+ * If we process a command which wasn't a negprot it means the
+ * neg prot was already done, so the server dialect was set
+ * and we can test it. Preauth requires 3.1.1 for now.
+ */
+ if (server->dialect != SMB311_PROT_ID)
+ return 0;
- rc = smb311_crypto_shash_allocate(ses->server);
+ if (hdr->Command != SMB2_SESSION_SETUP)
+ return 0;
+
+ /* skip last sess setup response */
+ if ((hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)
+ && (hdr->Status == NT_STATUS_OK
+ || (hdr->Status !=
+ cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED))))
+ return 0;
+
+ok:
+ rc = smb311_crypto_shash_allocate(server);
if (rc)
return rc;
- d = ses->server->secmech.sdescsha512;
+ d = server->secmech.sdescsha512;
rc = crypto_shash_init(&d->shash);
if (rc) {
- cifs_dbg(VFS, "%s: could not init sha512 shash\n", __func__);
+ cifs_dbg(VFS, "%s: Could not init sha512 shash\n", __func__);
return rc;
}
rc = crypto_shash_update(&d->shash, ses->preauth_sha_hash,
SMB2_PREAUTH_HASH_SIZE);
if (rc) {
- cifs_dbg(VFS, "%s: could not update sha512 shash\n", __func__);
+ cifs_dbg(VFS, "%s: Could not update sha512 shash\n", __func__);
return rc;
}
@@ -865,7 +922,7 @@
rc = crypto_shash_update(&d->shash,
iov[i].iov_base, iov[i].iov_len);
if (rc) {
- cifs_dbg(VFS, "%s: could not update sha512 shash\n",
+ cifs_dbg(VFS, "%s: Could not update sha512 shash\n",
__func__);
return rc;
}
@@ -873,7 +930,7 @@
rc = crypto_shash_final(&d->shash, ses->preauth_sha_hash);
if (rc) {
- cifs_dbg(VFS, "%s: could not finalize sha512 shash\n",
+ cifs_dbg(VFS, "%s: Could not finalize sha512 shash\n",
__func__);
return rc;
}
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index defee1d..fdb1d66 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -10,7 +10,10 @@
#include <linux/falloc.h>
#include <linux/scatterlist.h>
#include <linux/uuid.h>
+#include <linux/sort.h>
#include <crypto/aead.h>
+#include <linux/fiemap.h>
+#include "cifsfs.h"
#include "cifsglob.h"
#include "smb2pdu.h"
#include "smb2proto.h"
@@ -69,7 +72,7 @@
/* eg found case where write overlapping reconnect messed up credits */
if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
- server->hostname, *val);
+ server->hostname, *val, add);
if ((instance == 0) || (instance == server->reconnect_instance))
*val += add;
else
@@ -77,7 +80,7 @@
if (*val > 65000) {
*val = 65000; /* Don't get near 64K credits, avoid srv bugs */
- printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
+ pr_warn_once("server overflowed SMB3 credits\n");
}
server->in_flight--;
if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
@@ -118,6 +121,8 @@
cifs_dbg(FYI, "disabling oplocks\n");
break;
default:
+ trace_smb3_add_credits(server->CurrentMid,
+ server->hostname, rc, add);
cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
}
}
@@ -325,7 +330,7 @@
{
int rc;
- ses->server->CurrentMid = 0;
+ cifs_ses_server(ses)->CurrentMid = 0;
rc = SMB2_negotiate(xid, ses);
/* BB we probably don't need to retry with modern servers */
if (rc == -EAGAIN)
@@ -342,16 +347,6 @@
/* start with specified wsize, or default */
wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
wsize = min_t(unsigned int, wsize, server->max_write);
-#ifdef CONFIG_CIFS_SMB_DIRECT
- if (server->rdma) {
- if (server->sign)
- wsize = min_t(unsigned int,
- wsize, server->smbd_conn->max_fragmented_send_size);
- else
- wsize = min_t(unsigned int,
- wsize, server->smbd_conn->max_readwrite_size);
- }
-#endif
if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
@@ -370,8 +365,15 @@
#ifdef CONFIG_CIFS_SMB_DIRECT
if (server->rdma) {
if (server->sign)
+ /*
+ * Account for SMB2 data transfer packet header and
+ * possible encryption header
+ */
wsize = min_t(unsigned int,
- wsize, server->smbd_conn->max_fragmented_send_size);
+ wsize,
+ server->smbd_conn->max_fragmented_send_size -
+ SMB2_READWRITE_PDU_HEADER_SIZE -
+ sizeof(struct smb2_transform_hdr));
else
wsize = min_t(unsigned int,
wsize, server->smbd_conn->max_readwrite_size);
@@ -392,16 +394,6 @@
/* start with specified rsize, or default */
rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
rsize = min_t(unsigned int, rsize, server->max_read);
-#ifdef CONFIG_CIFS_SMB_DIRECT
- if (server->rdma) {
- if (server->sign)
- rsize = min_t(unsigned int,
- rsize, server->smbd_conn->max_fragmented_recv_size);
- else
- rsize = min_t(unsigned int,
- rsize, server->smbd_conn->max_readwrite_size);
- }
-#endif
if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
@@ -421,8 +413,15 @@
#ifdef CONFIG_CIFS_SMB_DIRECT
if (server->rdma) {
if (server->sign)
+ /*
+ * Account for SMB2 data transfer packet header and
+ * possible encryption header
+ */
rsize = min_t(unsigned int,
- rsize, server->smbd_conn->max_fragmented_recv_size);
+ rsize,
+ server->smbd_conn->max_fragmented_recv_size -
+ SMB2_READWRITE_PDU_HEADER_SIZE -
+ sizeof(struct smb2_transform_hdr));
else
rsize = min_t(unsigned int,
rsize, server->smbd_conn->max_readwrite_size);
@@ -569,6 +568,13 @@
return rc;
}
+static int compare_iface(const void *ia, const void *ib)
+{
+ const struct cifs_server_iface *a = (struct cifs_server_iface *)ia;
+ const struct cifs_server_iface *b = (struct cifs_server_iface *)ib;
+
+ return a->speed == b->speed ? 0 : (a->speed > b->speed ? -1 : 1);
+}
static int
SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
@@ -598,6 +604,9 @@
if (rc)
goto out;
+ /* sort interfaces from fastest to slowest */
+ sort(iface_list, iface_count, sizeof(*iface_list), compare_iface, NULL);
+
spin_lock(&ses->iface_lock);
kfree(ses->iface_list);
ses->iface_list = iface_list;
@@ -622,6 +631,7 @@
cfid->fid->volatile_fid);
cfid->is_valid = false;
cfid->file_all_info_is_valid = false;
+ cfid->has_lease = false;
}
}
@@ -632,19 +642,36 @@
mutex_unlock(&cfid->fid_mutex);
}
+void close_shroot_lease_locked(struct cached_fid *cfid)
+{
+ if (cfid->has_lease) {
+ cfid->has_lease = false;
+ kref_put(&cfid->refcount, smb2_close_cached_fid);
+ }
+}
+
+void close_shroot_lease(struct cached_fid *cfid)
+{
+ mutex_lock(&cfid->fid_mutex);
+ close_shroot_lease_locked(cfid);
+ mutex_unlock(&cfid->fid_mutex);
+}
+
void
smb2_cached_lease_break(struct work_struct *work)
{
struct cached_fid *cfid = container_of(work,
struct cached_fid, lease_break);
- close_shroot(cfid);
+ close_shroot_lease(cfid);
}
/*
* Open the directory at the root of a share
*/
-int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
+int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb,
+ struct cached_fid **cfid)
{
struct cifs_ses *ses = tcon->ses;
struct TCP_Server_Info *server = ses->server;
@@ -659,11 +686,12 @@
int rc, flags = 0;
__le16 utf16_path = 0; /* Null - since an open of top of share */
u8 oplock = SMB2_OPLOCK_LEVEL_II;
+ struct cifs_fid *pfid;
mutex_lock(&tcon->crfid.fid_mutex);
if (tcon->crfid.is_valid) {
cifs_dbg(FYI, "found a cached root file handle\n");
- memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
+ *cfid = &tcon->crfid;
kref_get(&tcon->crfid.refcount);
mutex_unlock(&tcon->crfid.fid_mutex);
return 0;
@@ -684,6 +712,7 @@
if (!server->ops->new_lease_key)
return -EIO;
+ pfid = tcon->crfid.fid;
server->ops->new_lease_key(pfid);
memset(rqst, 0, sizeof(rqst));
@@ -696,13 +725,14 @@
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
oparms.tcon = tcon;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
oparms.fid = pfid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, &utf16_path);
if (rc)
goto oshr_free;
smb2_set_next_command(tcon, &rqst[0]);
@@ -711,7 +741,8 @@
rqst[1].rq_iov = qi_iov;
rqst[1].rq_nvec = 1;
- rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[1], COMPOUND_FID,
COMPOUND_FID, FILE_ALL_INFORMATION,
SMB2_O_INFO_FILE, 0,
sizeof(struct smb2_file_all_info) +
@@ -721,7 +752,8 @@
smb2_set_related(&rqst[1]);
- rc = compound_send_recv(xid, ses, flags, 2, rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, 2, rqst,
resp_buftype, rsp_iov);
mutex_lock(&tcon->crfid.fid_mutex);
@@ -762,8 +794,8 @@
if (rc) {
if (rc == -EREMCHG) {
tcon->need_reconnect = true;
- printk_once(KERN_WARNING "server share %s deleted\n",
- tcon->treeName);
+ pr_warn_once("server share %s deleted\n",
+ tcon->treeName);
}
goto oshr_exit;
}
@@ -785,9 +817,11 @@
/* BB TBD check to see if oplock level check can be removed below */
if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) {
kref_get(&tcon->crfid.refcount);
+ tcon->crfid.has_lease = true;
smb2_parse_contexts(server, o_rsp,
&oparms.fid->epoch,
- oparms.fid->lease_key, &oplock, NULL);
+ oparms.fid->lease_key, &oplock,
+ NULL, NULL);
} else
goto oshr_exit;
@@ -799,7 +833,7 @@
sizeof(struct smb2_file_all_info),
&rsp_iov[1], sizeof(struct smb2_file_all_info),
(char *)&tcon->crfid.file_all_info))
- tcon->crfid.file_all_info_is_valid = 1;
+ tcon->crfid.file_all_info_is_valid = true;
oshr_exit:
mutex_unlock(&tcon->crfid.fid_mutex);
@@ -808,11 +842,14 @@
SMB2_query_info_free(&rqst[1]);
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
+ if (rc == 0)
+ *cfid = &tcon->crfid;
return rc;
}
static void
-smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
+smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb)
{
int rc;
__le16 srch_path = 0; /* Null - open root of share */
@@ -820,20 +857,23 @@
struct cifs_open_parms oparms;
struct cifs_fid fid;
bool no_cached_open = tcon->nohandlecache;
+ struct cached_fid *cfid = NULL;
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
- if (no_cached_open)
+ if (no_cached_open) {
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
- NULL);
- else
- rc = open_shroot(xid, tcon, &fid);
-
+ NULL, NULL);
+ } else {
+ rc = open_shroot(xid, tcon, cifs_sb, &cfid);
+ if (rc == 0)
+ memcpy(&fid, cfid->fid, sizeof(struct cifs_fid));
+ }
if (rc)
return;
@@ -850,11 +890,12 @@
if (no_cached_open)
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
else
- close_shroot(&tcon->crfid);
+ close_shroot(cfid);
}
static void
-smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
+smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb)
{
int rc;
__le16 srch_path = 0; /* Null - open root of share */
@@ -865,11 +906,12 @@
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
+ NULL, NULL);
if (rc)
return;
@@ -900,14 +942,12 @@
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
+ NULL);
if (rc) {
kfree(utf16_path);
return rc;
@@ -1094,9 +1134,10 @@
struct cifs_sb_info *cifs_sb)
{
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
__le16 *utf16_path = NULL;
int ea_name_len = strlen(ea_name);
- int flags = 0;
+ int flags = CIFS_CP_CREATE_CLOSE_OP;
int len;
struct smb_rqst rqst[3];
int resp_buftype[3];
@@ -1178,14 +1219,12 @@
oparms.tcon = tcon;
oparms.desired_access = FILE_WRITE_EA;
oparms.disposition = FILE_OPEN;
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
if (rc)
goto sea_exit;
smb2_set_next_command(tcon, &rqst[0]);
@@ -1211,7 +1250,8 @@
size[0] = len;
data[0] = ea;
- rc = SMB2_set_info_init(tcon, &rqst[1], COMPOUND_FID,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[1], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_FULL_EA_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -1223,10 +1263,12 @@
memset(&close_iov, 0, sizeof(close_iov));
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
smb2_set_related(&rqst[2]);
- rc = compound_send_recv(xid, ses, flags, 3, rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, 3, rqst,
resp_buftype, rsp_iov);
/* no need to bump num_remote_opens because handle immediately closed */
@@ -1378,6 +1420,45 @@
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}
+static void
+smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifsFileInfo *cfile)
+{
+ struct smb2_file_network_open_info file_inf;
+ struct inode *inode;
+ int rc;
+
+ rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid, &file_inf);
+ if (rc)
+ return;
+
+ inode = d_inode(cfile->dentry);
+
+ spin_lock(&inode->i_lock);
+ CIFS_I(inode)->time = jiffies;
+
+ /* Creation time should not need to be updated on close */
+ if (file_inf.LastWriteTime)
+ inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime);
+ if (file_inf.ChangeTime)
+ inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime);
+ if (file_inf.LastAccessTime)
+ inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime);
+
+ /*
+ * i_blocks is not related to (i_size / i_blksize),
+ * but instead 512 byte (2**9) size is required for
+ * calculating num blocks.
+ */
+ if (le64_to_cpu(file_inf.AllocationSize) > 4096)
+ inode->i_blocks =
+ (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
+
+ /* End of file and Attributes should not have to be updated on close */
+ spin_unlock(&inode->i_lock);
+}
+
static int
SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
@@ -1408,73 +1489,83 @@
return rc;
}
-static int
-smb2_ioctl_query_info(const unsigned int xid,
- struct cifs_tcon *tcon,
- __le16 *path, int is_dir,
- unsigned long p)
-{
- struct cifs_ses *ses = tcon->ses;
- char __user *arg = (char __user *)p;
- struct smb_query_info qi;
- struct smb_query_info __user *pqi;
- int rc = 0;
- int flags = 0;
- struct smb2_query_info_rsp *qi_rsp = NULL;
- struct smb2_ioctl_rsp *io_rsp = NULL;
- void *buffer = NULL;
+struct iqi_vars {
struct smb_rqst rqst[3];
- int resp_buftype[3];
struct kvec rsp_iov[3];
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
- struct cifs_open_parms oparms;
- u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
- struct cifs_fid fid;
struct kvec qi_iov[1];
struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
struct kvec close_iov[1];
+};
+
+static int
+smb2_ioctl_query_info(const unsigned int xid,
+ struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb,
+ __le16 *path, int is_dir,
+ unsigned long p)
+{
+ struct iqi_vars *vars;
+ struct smb_rqst *rqst;
+ struct kvec *rsp_iov;
+ struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
+ char __user *arg = (char __user *)p;
+ struct smb_query_info qi;
+ struct smb_query_info __user *pqi;
+ int rc = 0;
+ int flags = CIFS_CP_CREATE_CLOSE_OP;
+ struct smb2_query_info_rsp *qi_rsp = NULL;
+ struct smb2_ioctl_rsp *io_rsp = NULL;
+ void *buffer = NULL;
+ int resp_buftype[3];
+ struct cifs_open_parms oparms;
+ u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ struct cifs_fid fid;
unsigned int size[2];
void *data[2];
+ int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
- memset(rqst, 0, sizeof(rqst));
+ vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
+ if (vars == NULL)
+ return -ENOMEM;
+ rqst = &vars->rqst[0];
+ rsp_iov = &vars->rsp_iov[0];
+
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
- memset(rsp_iov, 0, sizeof(rsp_iov));
if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
- return -EFAULT;
+ goto e_fault;
- if (qi.output_buffer_length > 1024)
+ if (qi.output_buffer_length > 1024) {
+ kfree(vars);
return -EINVAL;
+ }
- if (!ses || !(ses->server))
+ if (!ses || !server) {
+ kfree(vars);
return -EIO;
+ }
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
- buffer = kmalloc(qi.output_buffer_length, GFP_KERNEL);
- if (buffer == NULL)
- return -ENOMEM;
-
- if (copy_from_user(buffer, arg + sizeof(struct smb_query_info),
- qi.output_buffer_length)) {
- rc = -EFAULT;
- goto iqinf_exit;
+ buffer = memdup_user(arg + sizeof(struct smb_query_info),
+ qi.output_buffer_length);
+ if (IS_ERR(buffer)) {
+ kfree(vars);
+ return PTR_ERR(buffer);
}
/* Open */
- memset(&open_iov, 0, sizeof(open_iov));
- rqst[0].rq_iov = open_iov;
+ rqst[0].rq_iov = &vars->open_iov[0];
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
memset(&oparms, 0, sizeof(oparms));
oparms.tcon = tcon;
oparms.disposition = FILE_OPEN;
- if (is_dir)
- oparms.create_options = CREATE_NOT_FILE;
- else
- oparms.create_options = CREATE_NOT_DIR;
+ oparms.create_options = cifs_create_options(cifs_sb, create_options);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -1499,7 +1590,8 @@
oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
}
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, path);
if (rc)
goto iqinf_exit;
smb2_set_next_command(tcon, &rqst[0]);
@@ -1510,11 +1602,11 @@
if (!capable(CAP_SYS_ADMIN))
rc = -EPERM;
else {
- memset(&io_iov, 0, sizeof(io_iov));
- rqst[1].rq_iov = io_iov;
+ rqst[1].rq_iov = &vars->io_iov[0];
rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
- rc = SMB2_ioctl_init(tcon, &rqst[1],
+ rc = SMB2_ioctl_init(tcon, server,
+ &rqst[1],
COMPOUND_FID, COMPOUND_FID,
qi.info_type, true, buffer,
qi.output_buffer_length,
@@ -1527,31 +1619,32 @@
if (!capable(CAP_SYS_ADMIN))
rc = -EPERM;
else {
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[1].rq_iov = si_iov;
+ rqst[1].rq_iov = &vars->si_iov[0];
rqst[1].rq_nvec = 1;
size[0] = 8;
data[0] = buffer;
- rc = SMB2_set_info_init(tcon, &rqst[1],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[1],
COMPOUND_FID, COMPOUND_FID,
current->tgid,
FILE_END_OF_FILE_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
}
} else if (qi.flags == PASSTHRU_QUERY_INFO) {
- memset(&qi_iov, 0, sizeof(qi_iov));
- rqst[1].rq_iov = qi_iov;
+ rqst[1].rq_iov = &vars->qi_iov[0];
rqst[1].rq_nvec = 1;
- rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[1], COMPOUND_FID,
COMPOUND_FID, qi.file_info_class,
qi.info_type, qi.additional_information,
qi.input_buffer_length,
qi.output_buffer_length, buffer);
} else { /* unknown flags */
- cifs_tcon_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
+ cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n",
+ qi.flags);
rc = -EINVAL;
}
@@ -1561,16 +1654,17 @@
smb2_set_related(&rqst[1]);
/* Close */
- memset(&close_iov, 0, sizeof(close_iov));
- rqst[2].rq_iov = close_iov;
+ rqst[2].rq_iov = &vars->close_iov[0];
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto iqinf_exit;
smb2_set_related(&rqst[2]);
- rc = compound_send_recv(xid, ses, flags, 3, rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, 3, rqst,
resp_buftype, rsp_iov);
if (rc)
goto iqinf_exit;
@@ -1611,17 +1705,14 @@
}
iqinf_exit:
- kfree(buffer);
- SMB2_open_free(&rqst[0]);
- if (qi.flags & PASSTHRU_FSCTL)
- SMB2_ioctl_free(&rqst[1]);
- else
- SMB2_query_info_free(&rqst[1]);
-
- SMB2_close_free(&rqst[2]);
+ cifs_small_buf_release(rqst[0].rq_iov[0].iov_base);
+ cifs_small_buf_release(rqst[1].rq_iov[0].iov_base);
+ cifs_small_buf_release(rqst[2].rq_iov[0].iov_base);
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
+ kfree(vars);
+ kfree(buffer);
return rc;
e_fault:
@@ -1683,7 +1774,7 @@
if (rc == 0) {
if (ret_data_len !=
sizeof(struct copychunk_ioctl_rsp)) {
- cifs_tcon_dbg(VFS, "invalid cchunk response size\n");
+ cifs_tcon_dbg(VFS, "Invalid cchunk response size\n");
rc = -EIO;
goto cchunk_out;
}
@@ -1697,12 +1788,12 @@
*/
if (le32_to_cpu(retbuf->TotalBytesWritten) >
le32_to_cpu(pcchunk->Length)) {
- cifs_tcon_dbg(VFS, "invalid copy chunk response\n");
+ cifs_tcon_dbg(VFS, "Invalid copy chunk response\n");
rc = -EIO;
goto cchunk_out;
}
if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
- cifs_tcon_dbg(VFS, "invalid num chunks written\n");
+ cifs_tcon_dbg(VFS, "Invalid num chunks written\n");
rc = -EIO;
goto cchunk_out;
}
@@ -1887,6 +1978,7 @@
{
int rc;
unsigned int ret_data_len;
+ struct inode *inode;
struct duplicate_extents_to_file dup_ext_buf;
struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
@@ -1903,10 +1995,21 @@
cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
src_off, dest_off, len);
- rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
- if (rc)
- goto duplicate_extents_out;
+ inode = d_inode(trgtfile->dentry);
+ if (inode->i_size < dest_off + len) {
+ rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
+ if (rc)
+ goto duplicate_extents_out;
+ /*
+ * Although also could set plausible allocation size (i_blocks)
+ * here in addition to setting the file size, in reflink
+ * it is likely that the target file is sparse. Its allocation
+ * size will be queried on next revalidate, but it is important
+ * to make sure that file's cached size is updated immediately
+ */
+ cifs_setsize(inode, dest_off + len);
+ }
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
trgtfile->fid.volatile_fid,
FSCTL_DUPLICATE_EXTENTS_TO_FILE,
@@ -2045,6 +2148,67 @@
return rc;
}
+
+
+static int
+smb3_notify(const unsigned int xid, struct file *pfile,
+ void __user *ioc_buf)
+{
+ struct smb3_notify notify;
+ struct dentry *dentry = pfile->f_path.dentry;
+ struct inode *inode = file_inode(pfile);
+ struct cifs_sb_info *cifs_sb;
+ struct cifs_open_parms oparms;
+ struct cifs_fid fid;
+ struct cifs_tcon *tcon;
+ unsigned char *path = NULL;
+ __le16 *utf16_path = NULL;
+ u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ int rc = 0;
+
+ path = build_path_from_dentry(dentry);
+ if (path == NULL)
+ return -ENOMEM;
+
+ cifs_sb = CIFS_SB(inode->i_sb);
+
+ utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
+ if (utf16_path == NULL) {
+ rc = -ENOMEM;
+ goto notify_exit;
+ }
+
+ if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) {
+ rc = -EFAULT;
+ goto notify_exit;
+ }
+
+ tcon = cifs_sb_master_tcon(cifs_sb);
+ oparms.tcon = tcon;
+ oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
+ oparms.disposition = FILE_OPEN;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
+ NULL);
+ if (rc)
+ goto notify_exit;
+
+ rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ notify.watch_tree, notify.completion_filter);
+
+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+
+ cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
+
+notify_exit:
+ kfree(path);
+ kfree(utf16_path);
+ return rc;
+}
+
static int
smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
const char *path, struct cifs_sb_info *cifs_sb,
@@ -2052,40 +2216,115 @@
struct cifs_search_info *srch_inf)
{
__le16 *utf16_path;
- int rc;
- __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ struct smb_rqst rqst[2];
+ struct kvec rsp_iov[2];
+ int resp_buftype[2];
+ struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
+ struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
+ int rc, flags = 0;
+ u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct cifs_open_parms oparms;
+ struct smb2_query_directory_rsp *qd_rsp = NULL;
+ struct smb2_create_rsp *op_rsp = NULL;
+ struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
if (!utf16_path)
return -ENOMEM;
+ if (smb3_encryption_required(tcon))
+ flags |= CIFS_TRANSFORM_REQ;
+
+ memset(rqst, 0, sizeof(rqst));
+ resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
+ memset(rsp_iov, 0, sizeof(rsp_iov));
+
+ /* Open */
+ memset(&open_iov, 0, sizeof(open_iov));
+ rqst[0].rq_iov = open_iov;
+ rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
+
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
oparms.disposition = FILE_OPEN;
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
- kfree(utf16_path);
- if (rc) {
- cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
- return rc;
- }
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
+ if (rc)
+ goto qdf_free;
+ smb2_set_next_command(tcon, &rqst[0]);
+ /* Query directory */
srch_inf->entries_in_buffer = 0;
srch_inf->index_of_last_entry = 2;
- rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
- fid->volatile_fid, 0, srch_inf);
- if (rc) {
- cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
- SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
+ memset(&qd_iov, 0, sizeof(qd_iov));
+ rqst[1].rq_iov = qd_iov;
+ rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
+
+ rc = SMB2_query_directory_init(xid, tcon, server,
+ &rqst[1],
+ COMPOUND_FID, COMPOUND_FID,
+ 0, srch_inf->info_level);
+ if (rc)
+ goto qdf_free;
+
+ smb2_set_related(&rqst[1]);
+
+ rc = compound_send_recv(xid, tcon->ses, server,
+ flags, 2, rqst,
+ resp_buftype, rsp_iov);
+
+ /* If the open failed there is nothing to do */
+ op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
+ if (op_rsp == NULL || op_rsp->sync_hdr.Status != STATUS_SUCCESS) {
+ cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
+ goto qdf_free;
}
+ fid->persistent_fid = op_rsp->PersistentFileId;
+ fid->volatile_fid = op_rsp->VolatileFileId;
+
+ /* Anything else than ENODATA means a genuine error */
+ if (rc && rc != -ENODATA) {
+ SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
+ cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
+ trace_smb3_query_dir_err(xid, fid->persistent_fid,
+ tcon->tid, tcon->ses->Suid, 0, 0, rc);
+ goto qdf_free;
+ }
+
+ atomic_inc(&tcon->num_remote_opens);
+
+ qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
+ if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
+ trace_smb3_query_dir_done(xid, fid->persistent_fid,
+ tcon->tid, tcon->ses->Suid, 0, 0);
+ srch_inf->endOfSearch = true;
+ rc = 0;
+ goto qdf_free;
+ }
+
+ rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
+ srch_inf);
+ if (rc) {
+ trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
+ tcon->ses->Suid, 0, 0, rc);
+ goto qdf_free;
+ }
+ resp_buftype[1] = CIFS_NO_BUFFER;
+
+ trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
+ tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
+
+ qdf_free:
+ kfree(utf16_path);
+ SMB2_open_free(&rqst[0]);
+ SMB2_query_directory_free(&rqst[1]);
+ free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
+ free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
return rc;
}
@@ -2144,6 +2383,17 @@
return true;
}
+static bool
+smb2_is_status_io_timeout(char *buf)
+{
+ struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
+
+ if (shdr->Status == STATUS_IO_TIMEOUT)
+ return true;
+ else
+ return false;
+}
+
static int
smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
struct cifsInodeInfo *cinode)
@@ -2241,7 +2491,8 @@
struct cifs_sb_info *cifs_sb)
{
struct cifs_ses *ses = tcon->ses;
- int flags = 0;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
+ int flags = CIFS_CP_CREATE_CLOSE_OP;
struct smb_rqst rqst[3];
int resp_buftype[3];
struct kvec rsp_iov[3];
@@ -2267,14 +2518,12 @@
oparms.tcon = tcon;
oparms.desired_access = desired_access;
oparms.disposition = FILE_OPEN;
- if (cifs_sb && backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
if (rc)
goto qic_exit;
smb2_set_next_command(tcon, &rqst[0]);
@@ -2283,7 +2532,8 @@
rqst[1].rq_iov = qi_iov;
rqst[1].rq_nvec = 1;
- rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[1], COMPOUND_FID, COMPOUND_FID,
class, type, 0,
output_len, 0,
NULL);
@@ -2296,19 +2546,21 @@
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto qic_exit;
smb2_set_related(&rqst[2]);
- rc = compound_send_recv(xid, ses, flags, 3, rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, 3, rqst,
resp_buftype, rsp_iov);
if (rc) {
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
if (rc == -EREMCHG) {
tcon->need_reconnect = true;
- printk_once(KERN_WARNING "server share %s deleted\n",
- tcon->treeName);
+ pr_warn_once("server share %s deleted\n",
+ tcon->treeName);
}
goto qic_exit;
}
@@ -2326,7 +2578,7 @@
static int
smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *buf)
+ struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
{
struct smb2_query_info_rsp *rsp;
struct smb2_fs_full_size_info *info = NULL;
@@ -2341,7 +2593,7 @@
FS_FULL_SIZE_INFORMATION,
SMB2_O_INFO_FILESYSTEM,
sizeof(struct smb2_fs_full_size_info),
- &rsp_iov, &buftype, NULL);
+ &rsp_iov, &buftype, cifs_sb);
if (rc)
goto qfs_exit;
@@ -2363,7 +2615,7 @@
static int
smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *buf)
+ struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
{
int rc;
__le16 srch_path = 0; /* Null - open root of share */
@@ -2372,16 +2624,17 @@
struct cifs_fid fid;
if (!tcon->posix_extensions)
- return smb2_queryfs(xid, tcon, buf);
+ return smb2_queryfs(xid, tcon, cifs_sb, buf);
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
+ NULL, NULL);
if (rc)
return rc;
@@ -2587,15 +2840,15 @@
struct cifs_sb_info *cifs_sb)
{
if (plen < sizeof(struct reparse_data_buffer)) {
- cifs_dbg(VFS, "reparse buffer is too small. Must be "
- "at least 8 bytes but was %d\n", plen);
+ cifs_dbg(VFS, "reparse buffer is too small. Must be at least 8 bytes but was %d\n",
+ plen);
return -EIO;
}
if (plen < le16_to_cpu(buf->ReparseDataLength) +
sizeof(struct reparse_data_buffer)) {
- cifs_dbg(VFS, "srv returned invalid reparse buf "
- "length: %d\n", plen);
+ cifs_dbg(VFS, "srv returned invalid reparse buf length: %d\n",
+ plen);
return -EIO;
}
@@ -2610,8 +2863,8 @@
(struct reparse_symlink_data_buffer *)buf,
plen, target_path, cifs_sb);
default:
- cifs_dbg(VFS, "srv returned unknown symlink buffer "
- "tag:0x%08x\n", le32_to_cpu(buf->ReparseTag));
+ cifs_dbg(VFS, "srv returned unknown symlink buffer tag:0x%08x\n",
+ le32_to_cpu(buf->ReparseTag));
return -EOPNOTSUPP;
}
}
@@ -2632,11 +2885,12 @@
struct kvec err_iov = {NULL, 0};
struct smb2_err_rsp *err_buf = NULL;
struct smb2_symlink_err_rsp *symlink;
+ struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
unsigned int sub_len;
unsigned int sub_offset;
unsigned int print_len;
unsigned int print_offset;
- int flags = 0;
+ int flags = CIFS_CP_CREATE_CLOSE_OP;
struct smb_rqst rqst[3];
int resp_buftype[3];
struct kvec rsp_iov[3];
@@ -2646,6 +2900,7 @@
struct smb2_create_rsp *create_rsp;
struct smb2_ioctl_rsp *ioctl_rsp;
struct reparse_data_buffer *reparse_buf;
+ int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0;
u32 plen;
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
@@ -2672,18 +2927,12 @@
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
-
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
- if (is_reparse_point)
- oparms.create_options = OPEN_REPARSE_POINT;
-
+ oparms.create_options = cifs_create_options(cifs_sb, create_options);
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
if (rc)
goto querty_exit;
smb2_set_next_command(tcon, &rqst[0]);
@@ -2694,7 +2943,8 @@
rqst[1].rq_iov = io_iov;
rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
- rc = SMB2_ioctl_init(tcon, &rqst[1], fid.persistent_fid,
+ rc = SMB2_ioctl_init(tcon, server,
+ &rqst[1], fid.persistent_fid,
fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
true /* is_fctl */, NULL, 0,
CIFSMaxBufSize -
@@ -2712,13 +2962,15 @@
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto querty_exit;
smb2_set_related(&rqst[2]);
- rc = compound_send_recv(xid, tcon->ses, flags, 3, rqst,
+ rc = compound_send_recv(xid, tcon->ses, server,
+ flags, 3, rqst,
resp_buftype, rsp_iov);
create_rsp = rsp_iov[0].iov_base;
@@ -2809,6 +3061,133 @@
return rc;
}
+int
+smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path,
+ __u32 *tag)
+{
+ int rc;
+ __le16 *utf16_path = NULL;
+ __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ struct cifs_open_parms oparms;
+ struct cifs_fid fid;
+ struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
+ int flags = CIFS_CP_CREATE_CLOSE_OP;
+ struct smb_rqst rqst[3];
+ int resp_buftype[3];
+ struct kvec rsp_iov[3];
+ struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
+ struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
+ struct kvec close_iov[1];
+ struct smb2_ioctl_rsp *ioctl_rsp;
+ struct reparse_data_buffer *reparse_buf;
+ u32 plen;
+
+ cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
+
+ if (smb3_encryption_required(tcon))
+ flags |= CIFS_TRANSFORM_REQ;
+
+ memset(rqst, 0, sizeof(rqst));
+ resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
+ memset(rsp_iov, 0, sizeof(rsp_iov));
+
+ utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
+ if (!utf16_path)
+ return -ENOMEM;
+
+ /*
+ * setup smb2open - TODO add optimization to call cifs_get_readable_path
+ * to see if there is a handle already open that we can use
+ */
+ memset(&open_iov, 0, sizeof(open_iov));
+ rqst[0].rq_iov = open_iov;
+ rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
+
+ memset(&oparms, 0, sizeof(oparms));
+ oparms.tcon = tcon;
+ oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.disposition = FILE_OPEN;
+ oparms.create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT);
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
+ if (rc)
+ goto query_rp_exit;
+ smb2_set_next_command(tcon, &rqst[0]);
+
+
+ /* IOCTL */
+ memset(&io_iov, 0, sizeof(io_iov));
+ rqst[1].rq_iov = io_iov;
+ rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
+
+ rc = SMB2_ioctl_init(tcon, server,
+ &rqst[1], COMPOUND_FID,
+ COMPOUND_FID, FSCTL_GET_REPARSE_POINT,
+ true /* is_fctl */, NULL, 0,
+ CIFSMaxBufSize -
+ MAX_SMB2_CREATE_RESPONSE_SIZE -
+ MAX_SMB2_CLOSE_RESPONSE_SIZE);
+ if (rc)
+ goto query_rp_exit;
+
+ smb2_set_next_command(tcon, &rqst[1]);
+ smb2_set_related(&rqst[1]);
+
+
+ /* Close */
+ memset(&close_iov, 0, sizeof(close_iov));
+ rqst[2].rq_iov = close_iov;
+ rqst[2].rq_nvec = 1;
+
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
+ if (rc)
+ goto query_rp_exit;
+
+ smb2_set_related(&rqst[2]);
+
+ rc = compound_send_recv(xid, tcon->ses, server,
+ flags, 3, rqst,
+ resp_buftype, rsp_iov);
+
+ ioctl_rsp = rsp_iov[1].iov_base;
+
+ /*
+ * Open was successful and we got an ioctl response.
+ */
+ if (rc == 0) {
+ /* See MS-FSCC 2.3.23 */
+
+ reparse_buf = (struct reparse_data_buffer *)
+ ((char *)ioctl_rsp +
+ le32_to_cpu(ioctl_rsp->OutputOffset));
+ plen = le32_to_cpu(ioctl_rsp->OutputCount);
+
+ if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
+ rsp_iov[1].iov_len) {
+ cifs_tcon_dbg(FYI, "srv returned invalid ioctl len: %d\n",
+ plen);
+ rc = -EIO;
+ goto query_rp_exit;
+ }
+ *tag = le32_to_cpu(reparse_buf->ReparseTag);
+ }
+
+ query_rp_exit:
+ kfree(utf16_path);
+ SMB2_open_free(&rqst[0]);
+ SMB2_ioctl_free(&rqst[1]);
+ SMB2_close_free(&rqst[2]);
+ free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
+ free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
+ free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
+ return rc;
+}
+
static struct cifs_ntsd *
get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
const struct cifs_fid *cifsfid, u32 *pacllen)
@@ -2858,11 +3237,6 @@
tcon = tlink_tcon(tlink);
xid = get_xid();
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
-
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
if (!utf16_path) {
rc = -ENOMEM;
@@ -2873,10 +3247,17 @@
oparms.tcon = tcon;
oparms.desired_access = READ_CONTROL;
oparms.disposition = FILE_OPEN;
+ /*
+ * When querying an ACL, even if the file is a symlink we want to open
+ * the source not the target, and so the protocol requires that the
+ * client specify this flag when opening a reparse point
+ */
+ oparms.create_options = cifs_create_options(cifs_sb, 0) | OPEN_REPARSE_POINT;
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
+ NULL);
kfree(utf16_path);
if (!rc) {
rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
@@ -2914,11 +3295,6 @@
tcon = tlink_tcon(tlink);
xid = get_xid();
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
-
if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
access_flags = WRITE_OWNER;
else
@@ -2933,12 +3309,14 @@
oparms.tcon = tcon;
oparms.desired_access = access_flags;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
+ NULL, NULL);
kfree(utf16_path);
if (!rc) {
rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
@@ -3081,6 +3459,127 @@
return rc;
}
+static int smb3_simple_fallocate_write_range(unsigned int xid,
+ struct cifs_tcon *tcon,
+ struct cifsFileInfo *cfile,
+ loff_t off, loff_t len,
+ char *buf)
+{
+ struct cifs_io_parms io_parms = {0};
+ int nbytes;
+ int rc = 0;
+ struct kvec iov[2];
+
+ io_parms.netfid = cfile->fid.netfid;
+ io_parms.pid = current->tgid;
+ io_parms.tcon = tcon;
+ io_parms.persistent_fid = cfile->fid.persistent_fid;
+ io_parms.volatile_fid = cfile->fid.volatile_fid;
+
+ while (len) {
+ io_parms.offset = off;
+ io_parms.length = len;
+ if (io_parms.length > SMB2_MAX_BUFFER_SIZE)
+ io_parms.length = SMB2_MAX_BUFFER_SIZE;
+ /* iov[0] is reserved for smb header */
+ iov[1].iov_base = buf;
+ iov[1].iov_len = io_parms.length;
+ rc = SMB2_write(xid, &io_parms, &nbytes, iov, 1);
+ if (rc)
+ break;
+ if (nbytes > len)
+ return -EINVAL;
+ buf += nbytes;
+ off += nbytes;
+ len -= nbytes;
+ }
+ return rc;
+}
+
+static int smb3_simple_fallocate_range(unsigned int xid,
+ struct cifs_tcon *tcon,
+ struct cifsFileInfo *cfile,
+ loff_t off, loff_t len)
+{
+ struct file_allocated_range_buffer in_data, *out_data = NULL, *tmp_data;
+ u32 out_data_len;
+ char *buf = NULL;
+ loff_t l;
+ int rc;
+
+ in_data.file_offset = cpu_to_le64(off);
+ in_data.length = cpu_to_le64(len);
+ rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid,
+ FSCTL_QUERY_ALLOCATED_RANGES, true,
+ (char *)&in_data, sizeof(in_data),
+ 1024 * sizeof(struct file_allocated_range_buffer),
+ (char **)&out_data, &out_data_len);
+ if (rc)
+ goto out;
+
+ buf = kzalloc(1024 * 1024, GFP_KERNEL);
+ if (buf == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ tmp_data = out_data;
+ while (len) {
+ /*
+ * The rest of the region is unmapped so write it all.
+ */
+ if (out_data_len == 0) {
+ rc = smb3_simple_fallocate_write_range(xid, tcon,
+ cfile, off, len, buf);
+ goto out;
+ }
+
+ if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ if (off < le64_to_cpu(tmp_data->file_offset)) {
+ /*
+ * We are at a hole. Write until the end of the region
+ * or until the next allocated data,
+ * whichever comes next.
+ */
+ l = le64_to_cpu(tmp_data->file_offset) - off;
+ if (len < l)
+ l = len;
+ rc = smb3_simple_fallocate_write_range(xid, tcon,
+ cfile, off, l, buf);
+ if (rc)
+ goto out;
+ off = off + l;
+ len = len - l;
+ if (len == 0)
+ goto out;
+ }
+ /*
+ * We are at a section of allocated data, just skip forward
+ * until the end of the data or the end of the region
+ * we are supposed to fallocate, whichever comes first.
+ */
+ l = le64_to_cpu(tmp_data->length);
+ if (len < l)
+ l = len;
+ off += l;
+ len -= l;
+
+ tmp_data = &tmp_data[1];
+ out_data_len -= sizeof(struct file_allocated_range_buffer);
+ }
+
+ out:
+ kfree(out_data);
+ kfree(buf);
+ return rc;
+}
+
+
static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
loff_t off, loff_t len, bool keep_size)
{
@@ -3108,32 +3607,78 @@
}
/*
+ * Extending the file
+ */
+ if ((keep_size == false) && i_size_read(inode) < off + len) {
+ rc = inode_newsize_ok(inode, off + len);
+ if (rc)
+ goto out;
+
+ if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0)
+ smb2_set_sparse(xid, tcon, cfile, inode, false);
+
+ eof = cpu_to_le64(off + len);
+ rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid, cfile->pid, &eof);
+ if (rc == 0) {
+ cifsi->server_eof = off + len;
+ cifs_setsize(inode, off + len);
+ cifs_truncate_page(inode->i_mapping, inode->i_size);
+ truncate_setsize(inode, off + len);
+ }
+ goto out;
+ }
+
+ /*
* Files are non-sparse by default so falloc may be a no-op
- * Must check if file sparse. If not sparse, and not extending
- * then no need to do anything since file already allocated
+ * Must check if file sparse. If not sparse, and since we are not
+ * extending then no need to do anything since file already allocated
*/
if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
- if (keep_size == true)
+ rc = 0;
+ goto out;
+ }
+
+ if (keep_size == true) {
+ /*
+ * We can not preallocate pages beyond the end of the file
+ * in SMB2
+ */
+ if (off >= i_size_read(inode)) {
rc = 0;
- /* check if extending file */
- else if (i_size_read(inode) >= off + len)
- /* not extending file and already not sparse */
- rc = 0;
- /* BB: in future add else clause to extend file */
- else
- rc = -EOPNOTSUPP;
- if (rc)
- trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
- tcon->tid, tcon->ses->Suid, off, len, rc);
- else
- trace_smb3_falloc_done(xid, cfile->fid.persistent_fid,
- tcon->tid, tcon->ses->Suid, off, len);
- free_xid(xid);
- return rc;
+ goto out;
+ }
+ /*
+ * For fallocates that are partially beyond the end of file,
+ * clamp len so we only fallocate up to the end of file.
+ */
+ if (off + len > i_size_read(inode)) {
+ len = i_size_read(inode) - off;
+ }
}
if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
/*
+ * At this point, we are trying to fallocate an internal
+ * regions of a sparse file. Since smb2 does not have a
+ * fallocate command we have two otions on how to emulate this.
+ * We can either turn the entire file to become non-sparse
+ * which we only do if the fallocate is for virtually
+ * the whole file, or we can overwrite the region with zeroes
+ * using SMB2_write, which could be prohibitevly expensive
+ * if len is large.
+ */
+ /*
+ * We are only trying to fallocate a small region so
+ * just write it with zero.
+ */
+ if (len <= 1024 * 1024) {
+ rc = smb3_simple_fallocate_range(xid, tcon, cfile,
+ off, len);
+ goto out;
+ }
+
+ /*
* Check if falloc starts within first few pages of file
* and ends within a few pages of the end of file to
* ensure that most of file is being forced to be
@@ -3143,25 +3688,14 @@
*/
if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
rc = -EOPNOTSUPP;
- trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
- tcon->tid, tcon->ses->Suid, off, len, rc);
- free_xid(xid);
- return rc;
- }
-
- smb2_set_sparse(xid, tcon, cfile, inode, false);
- rc = 0;
- } else {
- smb2_set_sparse(xid, tcon, cfile, inode, false);
- rc = 0;
- if (i_size_read(inode) < off + len) {
- eof = cpu_to_le64(off + len);
- rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, cfile->pid,
- &eof);
+ goto out;
}
}
+ smb2_set_sparse(xid, tcon, cfile, inode, false);
+ rc = 0;
+
+out:
if (rc)
trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
tcon->ses->Suid, off, len, rc);
@@ -3267,8 +3801,9 @@
int i, num, rc, flags, last_blob;
u64 next;
- if (fiemap_check_flags(fei, FIEMAP_FLAG_SYNC))
- return -EBADR;
+ rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0);
+ if (rc)
+ return rc;
xid = get_xid();
again:
@@ -3605,10 +4140,11 @@
tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
tr_hdr->Flags = cpu_to_le16(0x01);
- if (cipher_type == SMB2_ENCRYPTION_AES128_GCM)
- get_random_bytes(&tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
+ if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
+ (cipher_type == SMB2_ENCRYPTION_AES256_GCM))
+ get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
else
- get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
+ get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
}
@@ -3684,14 +4220,16 @@
u8 *ses_enc_key;
spin_lock(&cifs_tcp_ses_lock);
- list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
- if (ses->Suid != ses_id)
- continue;
- ses_enc_key = enc ? ses->smb3encryptionkey :
- ses->smb3decryptionkey;
- memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
- spin_unlock(&cifs_tcp_ses_lock);
- return 0;
+ list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
+ list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
+ if (ses->Suid == ses_id) {
+ ses_enc_key = enc ? ses->smb3encryptionkey :
+ ses->smb3decryptionkey;
+ memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE);
+ spin_unlock(&cifs_tcp_ses_lock);
+ return 0;
+ }
+ }
}
spin_unlock(&cifs_tcp_ses_lock);
@@ -3714,7 +4252,7 @@
int rc = 0;
struct scatterlist *sg;
u8 sign[SMB2_SIGNATURE_SIZE] = {};
- u8 key[SMB3_SIGN_KEY_SIZE];
+ u8 key[SMB3_ENC_DEC_KEY_SIZE];
struct aead_request *req;
char *iv;
unsigned int iv_len;
@@ -3737,7 +4275,13 @@
tfm = enc ? server->secmech.ccmaesencrypt :
server->secmech.ccmaesdecrypt;
- rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
+
+ if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) ||
+ (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
+ rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE);
+ else
+ rc = crypto_aead_setkey(tfm, key, SMB3_GCM128_CRYPTKEY_SIZE);
+
if (rc) {
cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
return rc;
@@ -3775,11 +4319,12 @@
goto free_sg;
}
- if (server->cipher_type == SMB2_ENCRYPTION_AES128_GCM)
- memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
+ if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
+ (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
+ memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
else {
iv[0] = 3;
- memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
+ memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
}
aead_request_set_crypt(req, sg, sg, crypt_len, iv);
@@ -4023,7 +4568,6 @@
server->ops->is_session_expired(buf)) {
if (!is_offloaded)
cifs_reconnect(server);
- wake_up(&server->response_q);
return -1;
}
@@ -4427,14 +4971,12 @@
cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
pdu_length);
cifs_reconnect(server);
- wake_up(&server->response_q);
return -ECONNABORTED;
}
if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
cifs_server_dbg(VFS, "Transform message is broken\n");
cifs_reconnect(server);
- wake_up(&server->response_q);
return -ECONNABORTED;
}
@@ -4475,9 +5017,8 @@
{
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
int rc = -EPERM;
- int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
FILE_ALL_INFO *buf = NULL;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
__u32 oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
@@ -4511,13 +5052,11 @@
goto out;
}
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
+ CREATE_OPTION_SPECIAL);
oparms.disposition = FILE_CREATE;
oparms.path = full_path;
oparms.fid = &fid;
@@ -4661,6 +5200,7 @@
.make_node = smb2_make_node,
.fiemap = smb3_fiemap,
.llseek = smb3_llseek,
+ .is_status_io_timeout = smb2_is_status_io_timeout,
};
struct smb_version_operations smb21_operations = {
@@ -4746,6 +5286,7 @@
.wp_retry_size = smb2_wp_retry_size,
.dir_needs_close = smb2_dir_needs_close,
.enum_snapshots = smb3_enum_snapshots,
+ .notify = smb3_notify,
.get_dfs_refer = smb2_get_dfs_refer,
.select_sectype = smb2_select_sectype,
#ifdef CONFIG_CIFS_XATTR
@@ -4760,6 +5301,7 @@
.make_node = smb2_make_node,
.fiemap = smb3_fiemap,
.llseek = smb3_llseek,
+ .is_status_io_timeout = smb2_is_status_io_timeout,
};
struct smb_version_operations smb30_operations = {
@@ -4800,6 +5342,8 @@
.can_echo = smb2_can_echo,
.echo = SMB2_echo,
.query_path_info = smb2_query_path_info,
+ /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */
+ .query_reparse_tag = smb2_query_reparse_tag,
.get_srv_inum = smb2_get_srv_inum,
.query_file_info = smb2_query_file_info,
.set_path_size = smb2_set_path_size,
@@ -4818,6 +5362,7 @@
.open = smb2_open_file,
.set_fid = smb2_set_fid,
.close = smb2_close_file,
+ .close_getattr = smb2_close_getattr,
.flush = smb2_flush_file,
.async_readv = smb2_async_readv,
.async_writev = smb2_async_writev,
@@ -4851,6 +5396,7 @@
.dir_needs_close = smb2_dir_needs_close,
.fallocate = smb3_fallocate,
.enum_snapshots = smb3_enum_snapshots,
+ .notify = smb3_notify,
.init_transform_rq = smb3_init_transform_rq,
.is_transform_hdr = smb3_is_transform_hdr,
.receive_transform = smb3_receive_transform,
@@ -4868,6 +5414,7 @@
.make_node = smb2_make_node,
.fiemap = smb3_fiemap,
.llseek = smb3_llseek,
+ .is_status_io_timeout = smb2_is_status_io_timeout,
};
struct smb_version_operations smb311_operations = {
@@ -4908,6 +5455,7 @@
.can_echo = smb2_can_echo,
.echo = SMB2_echo,
.query_path_info = smb2_query_path_info,
+ .query_reparse_tag = smb2_query_reparse_tag,
.get_srv_inum = smb2_get_srv_inum,
.query_file_info = smb2_query_file_info,
.set_path_size = smb2_set_path_size,
@@ -4927,6 +5475,7 @@
.open = smb2_open_file,
.set_fid = smb2_set_fid,
.close = smb2_close_file,
+ .close_getattr = smb2_close_getattr,
.flush = smb2_flush_file,
.async_readv = smb2_async_readv,
.async_writev = smb2_async_writev,
@@ -4960,6 +5509,7 @@
.dir_needs_close = smb2_dir_needs_close,
.fallocate = smb3_fallocate,
.enum_snapshots = smb3_enum_snapshots,
+ .notify = smb3_notify,
.init_transform_rq = smb3_init_transform_rq,
.is_transform_hdr = smb3_is_transform_hdr,
.receive_transform = smb3_receive_transform,
@@ -4977,6 +5527,7 @@
.make_node = smb2_make_node,
.fiemap = smb3_fiemap,
.llseek = smb3_llseek,
+ .is_status_io_timeout = smb2_is_status_io_timeout,
};
struct smb_version_values smb20_values = {
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index e068f82..88554b6 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -85,7 +85,7 @@
int smb3_encryption_required(const struct cifs_tcon *tcon)
{
- if (!tcon)
+ if (!tcon || !tcon->ses)
return 0;
if ((tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
(tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
@@ -98,14 +98,13 @@
static void
smb2_hdr_assemble(struct smb2_sync_hdr *shdr, __le16 smb2_cmd,
- const struct cifs_tcon *tcon)
+ const struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server)
{
shdr->ProtocolId = SMB2_PROTO_NUMBER;
shdr->StructureSize = cpu_to_le16(64);
shdr->Command = smb2_cmd;
- if (tcon && tcon->ses && tcon->ses->server) {
- struct TCP_Server_Info *server = tcon->ses->server;
-
+ if (server) {
spin_lock(&server->req_lock);
/* Request up to 10 credits but don't go over the limit. */
if (server->credits >= server->max_credits)
@@ -125,8 +124,7 @@
/* GLOBAL_CAP_LARGE_MTU will only be set if dialect > SMB2.02 */
/* See sections 2.2.4 and 3.2.4.1.5 of MS-SMB2 */
- if ((tcon->ses) && (tcon->ses->server) &&
- (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
+ if (server && (server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
shdr->CreditCharge = cpu_to_le16(1);
/* else CreditCharge MBZ */
@@ -148,100 +146,19 @@
/* if (tcon->share_flags & SHI1005_FLAGS_DFS)
shdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; */
- if (tcon->ses && tcon->ses->server && tcon->ses->server->sign &&
- !smb3_encryption_required(tcon))
+ if (server && server->sign && !smb3_encryption_required(tcon))
shdr->Flags |= SMB2_FLAGS_SIGNED;
out:
return;
}
-#ifdef CONFIG_CIFS_DFS_UPCALL
-static int __smb2_reconnect(const struct nls_table *nlsc,
- struct cifs_tcon *tcon)
-{
- int rc;
- struct dfs_cache_tgt_list tl;
- struct dfs_cache_tgt_iterator *it = NULL;
- char *tree;
- const char *tcp_host;
- size_t tcp_host_len;
- const char *dfs_host;
- size_t dfs_host_len;
-
- tree = kzalloc(MAX_TREE_SIZE, GFP_KERNEL);
- if (!tree)
- return -ENOMEM;
-
- if (tcon->ipc) {
- scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$",
- tcon->ses->server->hostname);
- rc = SMB2_tcon(0, tcon->ses, tree, tcon, nlsc);
- goto out;
- }
-
- if (!tcon->dfs_path) {
- rc = SMB2_tcon(0, tcon->ses, tcon->treeName, tcon, nlsc);
- goto out;
- }
-
- rc = dfs_cache_noreq_find(tcon->dfs_path + 1, NULL, &tl);
- if (rc)
- goto out;
-
- extract_unc_hostname(tcon->ses->server->hostname, &tcp_host,
- &tcp_host_len);
-
- for (it = dfs_cache_get_tgt_iterator(&tl); it;
- it = dfs_cache_get_next_tgt(&tl, it)) {
- const char *tgt = dfs_cache_get_tgt_name(it);
-
- extract_unc_hostname(tgt, &dfs_host, &dfs_host_len);
-
- if (dfs_host_len != tcp_host_len
- || strncasecmp(dfs_host, tcp_host, dfs_host_len) != 0) {
- cifs_dbg(FYI, "%s: skipping %.*s, doesn't match %.*s",
- __func__,
- (int)dfs_host_len, dfs_host,
- (int)tcp_host_len, tcp_host);
- continue;
- }
-
- scnprintf(tree, MAX_TREE_SIZE, "\\%s", tgt);
-
- rc = SMB2_tcon(0, tcon->ses, tree, tcon, nlsc);
- if (!rc)
- break;
- if (rc == -EREMOTE)
- break;
- }
-
- if (!rc) {
- if (it)
- rc = dfs_cache_noreq_update_tgthint(tcon->dfs_path + 1,
- it);
- else
- rc = -ENOENT;
- }
- dfs_cache_free_tgts(&tl);
-out:
- kfree(tree);
- return rc;
-}
-#else
-static inline int __smb2_reconnect(const struct nls_table *nlsc,
- struct cifs_tcon *tcon)
-{
- return SMB2_tcon(0, tcon->ses, tcon->treeName, tcon, nlsc);
-}
-#endif
-
static int
-smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
+smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server)
{
int rc;
struct nls_table *nls_codepage;
struct cifs_ses *ses;
- struct TCP_Server_Info *server;
int retries;
/*
@@ -270,12 +187,10 @@
}
}
if ((!tcon->ses) || (tcon->ses->status == CifsExiting) ||
- (!tcon->ses->server))
+ (!tcon->ses->server) || !server)
return -EIO;
ses = tcon->ses;
- server = ses->server;
-
retries = server->nr_targets;
/*
@@ -303,8 +218,8 @@
(server->tcpStatus != CifsNeedReconnect),
10 * HZ);
if (rc < 0) {
- cifs_dbg(FYI, "%s: aborting reconnect due to a received"
- " signal by the process\n", __func__);
+ cifs_dbg(FYI, "%s: aborting reconnect due to a received signal by the process\n",
+ __func__);
return -ERESTARTSYS;
}
@@ -349,15 +264,31 @@
goto out;
}
+ /*
+ * If we are reconnecting an extra channel, bind
+ */
+ if (server->is_channel) {
+ ses->binding = true;
+ ses->binding_chan = cifs_ses_find_chan(ses, server);
+ }
+
rc = cifs_negotiate_protocol(0, tcon->ses);
if (!rc && tcon->ses->need_reconnect) {
rc = cifs_setup_session(0, tcon->ses, nls_codepage);
if ((rc == -EACCES) && !tcon->retry) {
rc = -EHOSTDOWN;
+ ses->binding = false;
+ ses->binding_chan = NULL;
mutex_unlock(&tcon->ses->session_mutex);
goto failed;
}
}
+ /*
+ * End of channel binding
+ */
+ ses->binding = false;
+ ses->binding_chan = NULL;
+
if (rc || !tcon->need_reconnect) {
mutex_unlock(&tcon->ses->session_mutex);
goto out;
@@ -367,18 +298,18 @@
if (tcon->use_persistent)
tcon->need_reopen_files = true;
- rc = __smb2_reconnect(nls_codepage, tcon);
+ rc = cifs_tree_connect(0, tcon, nls_codepage);
mutex_unlock(&tcon->ses->session_mutex);
cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc);
if (rc) {
/* If sess reconnected but tcon didn't, something strange ... */
- printk_once(KERN_WARNING "reconnect tcon failed rc = %d\n", rc);
+ pr_warn_once("reconnect tcon failed rc = %d\n", rc);
goto out;
}
if (smb2_command != SMB2_INTERNAL_CMD)
- queue_delayed_work(cifsiod_wq, &server->reconnect, 0);
+ mod_delayed_work(cifsiod_wq, &server->reconnect, 0);
atomic_inc(&tconInfoReconnectCount);
out:
@@ -408,7 +339,9 @@
}
static void
-fill_small_buf(__le16 smb2_command, struct cifs_tcon *tcon, void *buf,
+fill_small_buf(__le16 smb2_command, struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ void *buf,
unsigned int *total_len)
{
struct smb2_sync_pdu *spdu = (struct smb2_sync_pdu *)buf;
@@ -421,7 +354,7 @@
*/
memset(buf, 0, 256);
- smb2_hdr_assemble(&spdu->sync_hdr, smb2_command, tcon);
+ smb2_hdr_assemble(&spdu->sync_hdr, smb2_command, tcon, server);
spdu->StructureSize2 = cpu_to_le16(parmsize);
*total_len = parmsize + sizeof(struct smb2_sync_hdr);
@@ -433,7 +366,8 @@
* function must have filled in request_buf pointer.
*/
static int __smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
- void **request_buf, unsigned int *total_len)
+ struct TCP_Server_Info *server,
+ void **request_buf, unsigned int *total_len)
{
/* BB eventually switch this to SMB2 specific small buf size */
if (smb2_command == SMB2_SET_INFO)
@@ -445,7 +379,7 @@
return -ENOMEM;
}
- fill_small_buf(smb2_command, tcon,
+ fill_small_buf(smb2_command, tcon, server,
(struct smb2_sync_hdr *)(*request_buf),
total_len);
@@ -459,27 +393,30 @@
}
static int smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
void **request_buf, unsigned int *total_len)
{
int rc;
- rc = smb2_reconnect(smb2_command, tcon);
+ rc = smb2_reconnect(smb2_command, tcon, server);
if (rc)
return rc;
- return __smb2_plain_req_init(smb2_command, tcon, request_buf,
+ return __smb2_plain_req_init(smb2_command, tcon, server, request_buf,
total_len);
}
static int smb2_ioctl_req_init(u32 opcode, struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
void **request_buf, unsigned int *total_len)
{
/* Skip reconnect only for FSCTL_VALIDATE_NEGOTIATE_INFO IOCTLs */
if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) {
- return __smb2_plain_req_init(SMB2_IOCTL, tcon, request_buf,
- total_len);
+ return __smb2_plain_req_init(SMB2_IOCTL, tcon, server,
+ request_buf, total_len);
}
- return smb2_plain_req_init(SMB2_IOCTL, tcon, request_buf, total_len);
+ return smb2_plain_req_init(SMB2_IOCTL, tcon, server,
+ request_buf, total_len);
}
/* For explanation of negotiate contexts see MS-SMB2 section 2.2.3.1 */
@@ -512,10 +449,22 @@
build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt)
{
pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES;
- pneg_ctxt->DataLength = cpu_to_le16(6); /* Cipher Count + two ciphers */
- pneg_ctxt->CipherCount = cpu_to_le16(2);
- pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM;
- pneg_ctxt->Ciphers[1] = SMB2_ENCRYPTION_AES128_CCM;
+ if (require_gcm_256) {
+ pneg_ctxt->DataLength = cpu_to_le16(4); /* Cipher Count + 1 cipher */
+ pneg_ctxt->CipherCount = cpu_to_le16(1);
+ pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES256_GCM;
+ } else if (enable_gcm_256) {
+ pneg_ctxt->DataLength = cpu_to_le16(8); /* Cipher Count + 3 ciphers */
+ pneg_ctxt->CipherCount = cpu_to_le16(3);
+ pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM;
+ pneg_ctxt->Ciphers[1] = SMB2_ENCRYPTION_AES256_GCM;
+ pneg_ctxt->Ciphers[2] = SMB2_ENCRYPTION_AES128_CCM;
+ } else {
+ pneg_ctxt->DataLength = cpu_to_le16(6); /* Cipher Count + 2 ciphers */
+ pneg_ctxt->CipherCount = cpu_to_le16(2);
+ pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM;
+ pneg_ctxt->Ciphers[1] = SMB2_ENCRYPTION_AES128_CCM;
+ }
}
static unsigned int
@@ -560,7 +509,7 @@
assemble_neg_contexts(struct smb2_negotiate_req *req,
struct TCP_Server_Info *server, unsigned int *total_len)
{
- char *pneg_ctxt = (char *)req;
+ char *pneg_ctxt;
unsigned int ctxt_len;
if (*total_len > 200) {
@@ -615,16 +564,16 @@
/* If invalid preauth context warn but use what we requested, SHA-512 */
if (len < MIN_PREAUTH_CTXT_DATA_LEN) {
- printk_once(KERN_WARNING "server sent bad preauth context\n");
+ pr_warn_once("server sent bad preauth context\n");
return;
} else if (len < MIN_PREAUTH_CTXT_DATA_LEN + le16_to_cpu(ctxt->SaltLength)) {
pr_warn_once("server sent invalid SaltLength\n");
return;
}
if (le16_to_cpu(ctxt->HashAlgorithmCount) != 1)
- printk_once(KERN_WARNING "illegal SMB3 hash algorithm count\n");
+ pr_warn_once("Invalid SMB3 hash algorithm count\n");
if (ctxt->HashAlgorithms != SMB2_PREAUTH_INTEGRITY_SHA512)
- printk_once(KERN_WARNING "unknown SMB3 hash algorithm\n");
+ pr_warn_once("unknown SMB3 hash algorithm\n");
}
static void decode_compress_ctx(struct TCP_Server_Info *server,
@@ -634,15 +583,15 @@
/* sizeof compress context is a one element compression capbility struct */
if (len < 10) {
- printk_once(KERN_WARNING "server sent bad compression cntxt\n");
+ pr_warn_once("server sent bad compression cntxt\n");
return;
}
if (le16_to_cpu(ctxt->CompressionAlgorithmCount) != 1) {
- printk_once(KERN_WARNING "illegal SMB3 compress algorithm count\n");
+ pr_warn_once("Invalid SMB3 compress algorithm count\n");
return;
}
if (le16_to_cpu(ctxt->CompressionAlgorithms[0]) > 3) {
- printk_once(KERN_WARNING "unknown compression algorithm\n");
+ pr_warn_once("unknown compression algorithm\n");
return;
}
server->compress_algorithm = ctxt->CompressionAlgorithms[0];
@@ -655,18 +604,39 @@
cifs_dbg(FYI, "decode SMB3.11 encryption neg context of len %d\n", len);
if (len < MIN_ENCRYPT_CTXT_DATA_LEN) {
- printk_once(KERN_WARNING "server sent bad crypto ctxt len\n");
+ pr_warn_once("server sent bad crypto ctxt len\n");
return -EINVAL;
}
if (le16_to_cpu(ctxt->CipherCount) != 1) {
- printk_once(KERN_WARNING "illegal SMB3.11 cipher count\n");
+ pr_warn_once("Invalid SMB3.11 cipher count\n");
return -EINVAL;
}
cifs_dbg(FYI, "SMB311 cipher type:%d\n", le16_to_cpu(ctxt->Ciphers[0]));
- if ((ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_CCM) &&
- (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_GCM)) {
- printk_once(KERN_WARNING "invalid SMB3.11 cipher returned\n");
+ if (require_gcm_256) {
+ if (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES256_GCM) {
+ cifs_dbg(VFS, "Server does not support requested encryption type (AES256 GCM)\n");
+ return -EOPNOTSUPP;
+ }
+ } else if (ctxt->Ciphers[0] == 0) {
+ /*
+ * e.g. if server only supported AES256_CCM (very unlikely)
+ * or server supported no encryption types or had all disabled.
+ * Since GLOBAL_CAP_ENCRYPTION will be not set, in the case
+ * in which mount requested encryption ("seal") checks later
+ * on during tree connection will return proper rc, but if
+ * seal not requested by client, since server is allowed to
+ * return 0 to indicate no supported cipher, we can't fail here
+ */
+ server->cipher_type = 0;
+ server->capabilities &= ~SMB2_GLOBAL_CAP_ENCRYPTION;
+ pr_warn_once("Server does not support requested encryption types\n");
+ return 0;
+ } else if ((ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_CCM) &&
+ (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_GCM) &&
+ (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES256_GCM)) {
+ /* server returned a cipher we didn't ask for */
+ pr_warn_once("Invalid SMB3.11 cipher returned\n");
return -EINVAL;
}
server->cipher_type = ctxt->Ciphers[0];
@@ -766,7 +736,7 @@
buf->Name[14] = 0xCD;
buf->Name[15] = 0x7C;
buf->Mode = cpu_to_le32(mode);
- cifs_dbg(FYI, "mode on posix create 0%o", mode);
+ cifs_dbg(FYI, "mode on posix create 0%o\n", mode);
return buf;
}
@@ -778,7 +748,7 @@
iov[num].iov_base = create_posix_buf(mode);
if (mode == ACL_NO_MODE)
- cifs_dbg(FYI, "illegal mode\n");
+ cifs_dbg(FYI, "Invalid mode\n");
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = sizeof(struct create_posix);
@@ -817,7 +787,7 @@
struct kvec rsp_iov;
int rc = 0;
int resp_buftype;
- struct TCP_Server_Info *server = ses->server;
+ struct TCP_Server_Info *server = cifs_ses_server(ses);
int blob_offset, blob_length;
char *security_blob;
int flags = CIFS_NEG_OP;
@@ -830,7 +800,8 @@
return -EIO;
}
- rc = smb2_plain_req_init(SMB2_NEGOTIATE, NULL, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_NEGOTIATE, NULL, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -839,7 +810,7 @@
memset(server->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE);
memset(ses->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE);
- if (strcmp(ses->server->vals->version_string,
+ if (strcmp(server->vals->version_string,
SMB3ANY_VERSION_STRING) == 0) {
req->Dialects[0] = cpu_to_le16(SMB30_PROT_ID);
req->Dialects[1] = cpu_to_le16(SMB302_PROT_ID);
@@ -855,7 +826,7 @@
total_len += 8;
} else {
/* otherwise send specific dialect */
- req->Dialects[0] = cpu_to_le16(ses->server->vals->protocol_id);
+ req->Dialects[0] = cpu_to_le16(server->vals->protocol_id);
req->DialectCount = cpu_to_le16(1);
total_len += 2;
}
@@ -869,6 +840,8 @@
req->SecurityMode = 0;
req->Capabilities = cpu_to_le32(server->vals->req_capabilities);
+ if (ses->chan_max > 1)
+ req->Capabilities |= cpu_to_le32(SMB2_GLOBAL_CAP_MULTI_CHANNEL);
/* ClientGUID must be zero for SMB2.02 dialect */
if (server->vals->protocol_id == SMB20_PROT_ID)
@@ -888,7 +861,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
cifs_small_buf_release(req);
rsp = (struct smb2_negotiate_rsp *)rsp_iov.iov_base;
/*
@@ -896,9 +870,7 @@
* cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]);
*/
if (rc == -EOPNOTSUPP) {
- cifs_server_dbg(VFS, "Dialect not supported by server. Consider "
- "specifying vers=1.0 or vers=2.0 on mount for accessing"
- " older servers\n");
+ cifs_server_dbg(VFS, "Dialect not supported by server. Consider specifying vers=1.0 or vers=2.0 on mount for accessing older servers\n");
goto neg_exit;
} else if (rc != 0)
goto neg_exit;
@@ -931,8 +903,8 @@
} else if (le16_to_cpu(rsp->DialectRevision) !=
server->vals->protocol_id) {
/* if requested single dialect ensure returned dialect matched */
- cifs_server_dbg(VFS, "Illegal 0x%x dialect returned: not requested\n",
- le16_to_cpu(rsp->DialectRevision));
+ cifs_server_dbg(VFS, "Invalid 0x%x dialect returned: not requested\n",
+ le16_to_cpu(rsp->DialectRevision));
return -EIO;
}
@@ -949,8 +921,8 @@
else if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID))
cifs_dbg(FYI, "negotiated smb3.1.1 dialect\n");
else {
- cifs_server_dbg(VFS, "Illegal dialect returned by server 0x%x\n",
- le16_to_cpu(rsp->DialectRevision));
+ cifs_server_dbg(VFS, "Invalid dialect returned by server 0x%x\n",
+ le16_to_cpu(rsp->DialectRevision));
rc = -EIO;
goto neg_exit;
}
@@ -1062,6 +1034,9 @@
pneg_inbuf->Capabilities =
cpu_to_le32(server->vals->req_capabilities);
+ if (tcon->ses->chan_max > 1)
+ pneg_inbuf->Capabilities |= cpu_to_le32(SMB2_GLOBAL_CAP_MULTI_CHANNEL);
+
memcpy(pneg_inbuf->Guid, server->client_guid,
SMB2_CLIENT_GUID_SIZE);
@@ -1115,15 +1090,16 @@
rc = 0;
goto out_free_inbuf;
} else if (rc != 0) {
- cifs_tcon_dbg(VFS, "validate protocol negotiate failed: %d\n", rc);
+ cifs_tcon_dbg(VFS, "validate protocol negotiate failed: %d\n",
+ rc);
rc = -EIO;
goto out_free_inbuf;
}
rc = -EIO;
if (rsplen != sizeof(*pneg_rsp)) {
- cifs_tcon_dbg(VFS, "invalid protocol negotiate response size: %d\n",
- rsplen);
+ cifs_tcon_dbg(VFS, "Invalid protocol negotiate response size: %d\n",
+ rsplen);
/* relax check since Mac returns max bufsize allowed on ioctl */
if (rsplen > CIFSMaxBufSize || rsplen < sizeof(*pneg_rsp))
@@ -1173,7 +1149,7 @@
if ((server->sec_kerberos || server->sec_mskerberos) &&
(global_secflags & CIFSSEC_MAY_KRB5))
return Kerberos;
- /* Fallthrough */
+ fallthrough;
default:
return Unspecified;
}
@@ -1204,21 +1180,30 @@
int rc;
struct cifs_ses *ses = sess_data->ses;
struct smb2_sess_setup_req *req;
- struct TCP_Server_Info *server = ses->server;
+ struct TCP_Server_Info *server = cifs_ses_server(ses);
unsigned int total_len;
- rc = smb2_plain_req_init(SMB2_SESSION_SETUP, NULL, (void **) &req,
- &total_len);
+ rc = smb2_plain_req_init(SMB2_SESSION_SETUP, NULL, server,
+ (void **) &req,
+ &total_len);
if (rc)
return rc;
- /* First session, not a reauthenticate */
- req->sync_hdr.SessionId = 0;
-
- /* if reconnect, we need to send previous sess id, otherwise it is 0 */
- req->PreviousSessionId = sess_data->previous_session;
-
- req->Flags = 0; /* MBZ */
+ if (sess_data->ses->binding) {
+ req->sync_hdr.SessionId = sess_data->ses->Suid;
+ req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED;
+ req->PreviousSessionId = 0;
+ req->Flags = SMB2_SESSION_REQ_FLAG_BINDING;
+ } else {
+ /* First session, not a reauthenticate */
+ req->sync_hdr.SessionId = 0;
+ /*
+ * if reconnect, we need to send previous sess id
+ * otherwise it is 0
+ */
+ req->PreviousSessionId = sess_data->previous_session;
+ req->Flags = 0; /* MBZ */
+ }
/* enough to enable echos and oplocks and one max size write */
req->sync_hdr.CreditRequest = cpu_to_le16(130);
@@ -1277,6 +1262,7 @@
/* BB add code to build os and lm fields */
rc = cifs_send_recv(sess_data->xid, sess_data->ses,
+ cifs_ses_server(sess_data->ses),
&rqst,
&sess_data->buf0_type,
CIFS_LOG_ERROR | CIFS_NEG_OP, &rsp_iov);
@@ -1291,28 +1277,33 @@
{
int rc = 0;
struct cifs_ses *ses = sess_data->ses;
+ struct TCP_Server_Info *server = cifs_ses_server(ses);
- mutex_lock(&ses->server->srv_mutex);
- if (ses->server->ops->generate_signingkey) {
- rc = ses->server->ops->generate_signingkey(ses);
+ mutex_lock(&server->srv_mutex);
+ if (server->ops->generate_signingkey) {
+ rc = server->ops->generate_signingkey(ses);
if (rc) {
cifs_dbg(FYI,
"SMB3 session key generation failed\n");
- mutex_unlock(&ses->server->srv_mutex);
+ mutex_unlock(&server->srv_mutex);
return rc;
}
}
- if (!ses->server->session_estab) {
- ses->server->sequence_number = 0x2;
- ses->server->session_estab = true;
+ if (!server->session_estab) {
+ server->sequence_number = 0x2;
+ server->session_estab = true;
}
- mutex_unlock(&ses->server->srv_mutex);
+ mutex_unlock(&server->srv_mutex);
cifs_dbg(FYI, "SMB2/3 session established successfully\n");
- spin_lock(&GlobalMid_Lock);
- ses->status = CifsGood;
- ses->need_reconnect = false;
- spin_unlock(&GlobalMid_Lock);
+ /* keep existing ses state if binding */
+ if (!ses->binding) {
+ spin_lock(&GlobalMid_Lock);
+ ses->status = CifsGood;
+ ses->need_reconnect = false;
+ spin_unlock(&GlobalMid_Lock);
+ }
+
return rc;
}
@@ -1345,23 +1336,24 @@
* sending us a response in an expected form
*/
if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) {
- cifs_dbg(VFS,
- "bad cifs.upcall version. Expected %d got %d",
- CIFS_SPNEGO_UPCALL_VERSION, msg->version);
+ cifs_dbg(VFS, "bad cifs.upcall version. Expected %d got %d\n",
+ CIFS_SPNEGO_UPCALL_VERSION, msg->version);
rc = -EKEYREJECTED;
goto out_put_spnego_key;
}
- ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len,
- GFP_KERNEL);
- if (!ses->auth_key.response) {
- cifs_dbg(VFS,
- "Kerberos can't allocate (%u bytes) memory",
- msg->sesskey_len);
- rc = -ENOMEM;
- goto out_put_spnego_key;
+ /* keep session key if binding */
+ if (!ses->binding) {
+ ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len,
+ GFP_KERNEL);
+ if (!ses->auth_key.response) {
+ cifs_dbg(VFS, "Kerberos can't allocate (%u bytes) memory\n",
+ msg->sesskey_len);
+ rc = -ENOMEM;
+ goto out_put_spnego_key;
+ }
+ ses->auth_key.len = msg->sesskey_len;
}
- ses->auth_key.len = msg->sesskey_len;
sess_data->iov[1].iov_base = msg->data + msg->sesskey_len;
sess_data->iov[1].iov_len = msg->secblob_len;
@@ -1371,9 +1363,11 @@
goto out_put_spnego_key;
rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base;
- ses->Suid = rsp->sync_hdr.SessionId;
-
- ses->session_flags = le16_to_cpu(rsp->SessionFlags);
+ /* keep session id and flags if binding */
+ if (!ses->binding) {
+ ses->Suid = rsp->sync_hdr.SessionId;
+ ses->session_flags = le16_to_cpu(rsp->SessionFlags);
+ }
rc = SMB2_sess_establish_session(sess_data);
out_put_spnego_key:
@@ -1467,9 +1461,11 @@
cifs_dbg(FYI, "rawntlmssp session setup challenge phase\n");
-
- ses->Suid = rsp->sync_hdr.SessionId;
- ses->session_flags = le16_to_cpu(rsp->SessionFlags);
+ /* keep existing ses id and flags if binding */
+ if (!ses->binding) {
+ ses->Suid = rsp->sync_hdr.SessionId;
+ ses->session_flags = le16_to_cpu(rsp->SessionFlags);
+ }
out:
kfree(ntlmssp_blob);
@@ -1526,10 +1522,28 @@
rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base;
- ses->Suid = rsp->sync_hdr.SessionId;
- ses->session_flags = le16_to_cpu(rsp->SessionFlags);
+ /* keep existing ses id and flags if binding */
+ if (!ses->binding) {
+ ses->Suid = rsp->sync_hdr.SessionId;
+ ses->session_flags = le16_to_cpu(rsp->SessionFlags);
+ }
rc = SMB2_sess_establish_session(sess_data);
+#ifdef CONFIG_CIFS_DEBUG_DUMP_KEYS
+ if (ses->server->dialect < SMB30_PROT_ID) {
+ cifs_dbg(VFS, "%s: dumping generated SMB2 session keys\n", __func__);
+ /*
+ * The session id is opaque in terms of endianness, so we can't
+ * print it as a long long. we dump it as we got it on the wire
+ */
+ cifs_dbg(VFS, "Session Id %*ph\n", (int)sizeof(ses->Suid),
+ &ses->Suid);
+ cifs_dbg(VFS, "Session Key %*ph\n",
+ SMB2_NTLMV2_SESSKEY_SIZE, ses->auth_key.response);
+ cifs_dbg(VFS, "Signing Key %*ph\n",
+ SMB3_SIGN_KEY_SIZE, ses->auth_key.response);
+ }
+#endif
out:
kfree(ntlmssp_blob);
SMB2_sess_free_buffer(sess_data);
@@ -1544,11 +1558,10 @@
{
int type;
- type = smb2_select_sectype(ses->server, ses->sectype);
+ type = smb2_select_sectype(cifs_ses_server(ses), ses->sectype);
cifs_dbg(FYI, "sess setup type %d\n", type);
if (type == Unspecified) {
- cifs_dbg(VFS,
- "Unable to select appropriate authentication method!");
+ cifs_dbg(VFS, "Unable to select appropriate authentication method!\n");
return -EINVAL;
}
@@ -1572,7 +1585,7 @@
const struct nls_table *nls_cp)
{
int rc = 0;
- struct TCP_Server_Info *server = ses->server;
+ struct TCP_Server_Info *server = cifs_ses_server(ses);
struct SMB2_sess_data *sess_data;
cifs_dbg(FYI, "Session Setup\n");
@@ -1598,7 +1611,7 @@
/*
* Initialize the session hash with the server one.
*/
- memcpy(ses->preauth_sha_hash, ses->server->preauth_sha_hash,
+ memcpy(ses->preauth_sha_hash, server->preauth_sha_hash,
SMB2_PREAUTH_HASH_SIZE);
while (sess_data->func)
@@ -1636,7 +1649,8 @@
if (ses->need_reconnect)
goto smb2_session_already_dead;
- rc = smb2_plain_req_init(SMB2_LOGOFF, NULL, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_LOGOFF, NULL, ses->server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -1657,7 +1671,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, ses->server,
+ &rqst, &resp_buf_type, flags, &rsp_iov);
cifs_small_buf_release(req);
/*
* No tcon so can't do
@@ -1698,7 +1713,10 @@
__le16 *unc_path = NULL;
int flags = 0;
unsigned int total_len;
- struct TCP_Server_Info *server = ses->server;
+ struct TCP_Server_Info *server;
+
+ /* always use master channel */
+ server = ses->server;
cifs_dbg(FYI, "TCON\n");
@@ -1719,8 +1737,8 @@
/* SMB2 TREE_CONNECT request must be called with TreeId == 0 */
tcon->tid = 0;
atomic_set(&tcon->num_remote_opens, 0);
- rc = smb2_plain_req_init(SMB2_TREE_CONNECT, tcon, (void **) &req,
- &total_len);
+ rc = smb2_plain_req_init(SMB2_TREE_CONNECT, tcon, server,
+ (void **) &req, &total_len);
if (rc) {
kfree(unc_path);
return rc;
@@ -1759,7 +1777,8 @@
/* Need 64 for max size write so ask for more in case not there yet */
req->sync_hdr.CreditRequest = cpu_to_le16(64);
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
cifs_small_buf_release(req);
rsp = (struct smb2_tree_connect_rsp *)rsp_iov.iov_base;
trace_smb3_tcon(xid, tcon->tid, ses->Suid, tree, rc);
@@ -1842,8 +1861,11 @@
if ((tcon->need_reconnect) || (tcon->ses->need_reconnect))
return 0;
- rc = smb2_plain_req_init(SMB2_TREE_DISCONNECT, tcon, (void **) &req,
- &total_len);
+ close_shroot_lease(&tcon->crfid);
+
+ rc = smb2_plain_req_init(SMB2_TREE_DISCONNECT, tcon, ses->server,
+ (void **) &req,
+ &total_len);
if (rc)
return rc;
@@ -1859,7 +1881,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, ses->server,
+ &rqst, &resp_buf_type, flags, &rsp_iov);
cifs_small_buf_release(req);
if (rc)
cifs_stats_fail_inc(tcon, SMB2_TREE_DISCONNECT_HE);
@@ -1926,17 +1949,58 @@
buf->IndexNumber = pdisk_id->DiskFileId;
}
+static void
+parse_posix_ctxt(struct create_context *cc, struct smb2_file_all_info *info,
+ struct create_posix_rsp *posix)
+{
+ int sid_len;
+ u8 *beg = (u8 *)cc + le16_to_cpu(cc->DataOffset);
+ u8 *end = beg + le32_to_cpu(cc->DataLength);
+ u8 *sid;
+
+ memset(posix, 0, sizeof(*posix));
+
+ posix->nlink = le32_to_cpu(*(__le32 *)(beg + 0));
+ posix->reparse_tag = le32_to_cpu(*(__le32 *)(beg + 4));
+ posix->mode = le32_to_cpu(*(__le32 *)(beg + 8));
+
+ sid = beg + 12;
+ sid_len = posix_info_sid_size(sid, end);
+ if (sid_len < 0) {
+ cifs_dbg(VFS, "bad owner sid in posix create response\n");
+ return;
+ }
+ memcpy(&posix->owner, sid, sid_len);
+
+ sid = sid + sid_len;
+ sid_len = posix_info_sid_size(sid, end);
+ if (sid_len < 0) {
+ cifs_dbg(VFS, "bad group sid in posix create response\n");
+ return;
+ }
+ memcpy(&posix->group, sid, sid_len);
+
+ cifs_dbg(FYI, "nlink=%d mode=%o reparse_tag=%x\n",
+ posix->nlink, posix->mode, posix->reparse_tag);
+}
+
void
smb2_parse_contexts(struct TCP_Server_Info *server,
- struct smb2_create_rsp *rsp,
- unsigned int *epoch, char *lease_key, __u8 *oplock,
- struct smb2_file_all_info *buf)
+ struct smb2_create_rsp *rsp,
+ unsigned int *epoch, char *lease_key, __u8 *oplock,
+ struct smb2_file_all_info *buf,
+ struct create_posix_rsp *posix)
{
char *data_offset;
struct create_context *cc;
unsigned int next;
unsigned int remaining;
char *name;
+ static const char smb3_create_tag_posix[] = {
+ 0x93, 0xAD, 0x25, 0x50, 0x9C,
+ 0xB4, 0x11, 0xE7, 0xB4, 0x23, 0x83,
+ 0xDE, 0x96, 0x8B, 0xCD, 0x7C
+ };
*oplock = 0;
data_offset = (char *)rsp + le32_to_cpu(rsp->CreateContextsOffset);
@@ -1956,6 +2020,16 @@
else if (buf && (le16_to_cpu(cc->NameLength) == 4) &&
strncmp(name, SMB2_CREATE_QUERY_ON_DISK_ID, 4) == 0)
parse_query_id_ctxt(cc, buf);
+ else if ((le16_to_cpu(cc->NameLength) == 16)) {
+ if (posix &&
+ memcmp(name, smb3_create_tag_posix, 16) == 0)
+ parse_posix_ctxt(cc, buf, posix);
+ }
+ /* else {
+ cifs_dbg(FYI, "Context not matched with len %d\n",
+ le16_to_cpu(cc->NameLength));
+ cifs_dump_mem("Cctxt name: ", name, 4);
+ } */
next = le32_to_cpu(cc->Next);
if (!next)
@@ -2184,6 +2258,140 @@
return 0;
}
+/* See See http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx */
+static void setup_owner_group_sids(char *buf)
+{
+ struct owner_group_sids *sids = (struct owner_group_sids *)buf;
+
+ /* Populate the user ownership fields S-1-5-88-1 */
+ sids->owner.Revision = 1;
+ sids->owner.NumAuth = 3;
+ sids->owner.Authority[5] = 5;
+ sids->owner.SubAuthorities[0] = cpu_to_le32(88);
+ sids->owner.SubAuthorities[1] = cpu_to_le32(1);
+ sids->owner.SubAuthorities[2] = cpu_to_le32(current_fsuid().val);
+
+ /* Populate the group ownership fields S-1-5-88-2 */
+ sids->group.Revision = 1;
+ sids->group.NumAuth = 3;
+ sids->group.Authority[5] = 5;
+ sids->group.SubAuthorities[0] = cpu_to_le32(88);
+ sids->group.SubAuthorities[1] = cpu_to_le32(2);
+ sids->group.SubAuthorities[2] = cpu_to_le32(current_fsgid().val);
+
+ cifs_dbg(FYI, "owner S-1-5-88-1-%d, group S-1-5-88-2-%d\n", current_fsuid().val, current_fsgid().val);
+}
+
+/* See MS-SMB2 2.2.13.2.2 and MS-DTYP 2.4.6 */
+static struct crt_sd_ctxt *
+create_sd_buf(umode_t mode, bool set_owner, unsigned int *len)
+{
+ struct crt_sd_ctxt *buf;
+ __u8 *ptr, *aclptr;
+ unsigned int acelen, acl_size, ace_count;
+ unsigned int owner_offset = 0;
+ unsigned int group_offset = 0;
+ struct smb3_acl acl;
+
+ *len = roundup(sizeof(struct crt_sd_ctxt) + (sizeof(struct cifs_ace) * 4), 8);
+
+ if (set_owner) {
+ /* sizeof(struct owner_group_sids) is already multiple of 8 so no need to round */
+ *len += sizeof(struct owner_group_sids);
+ }
+
+ buf = kzalloc(*len, GFP_KERNEL);
+ if (buf == NULL)
+ return buf;
+
+ ptr = (__u8 *)&buf[1];
+ if (set_owner) {
+ /* offset fields are from beginning of security descriptor not of create context */
+ owner_offset = ptr - (__u8 *)&buf->sd;
+ buf->sd.OffsetOwner = cpu_to_le32(owner_offset);
+ group_offset = owner_offset + offsetof(struct owner_group_sids, group);
+ buf->sd.OffsetGroup = cpu_to_le32(group_offset);
+
+ setup_owner_group_sids(ptr);
+ ptr += sizeof(struct owner_group_sids);
+ } else {
+ buf->sd.OffsetOwner = 0;
+ buf->sd.OffsetGroup = 0;
+ }
+
+ buf->ccontext.DataOffset = cpu_to_le16(offsetof(struct crt_sd_ctxt, sd));
+ buf->ccontext.NameOffset = cpu_to_le16(offsetof(struct crt_sd_ctxt, Name));
+ buf->ccontext.NameLength = cpu_to_le16(4);
+ /* SMB2_CREATE_SD_BUFFER_TOKEN is "SecD" */
+ buf->Name[0] = 'S';
+ buf->Name[1] = 'e';
+ buf->Name[2] = 'c';
+ buf->Name[3] = 'D';
+ buf->sd.Revision = 1; /* Must be one see MS-DTYP 2.4.6 */
+
+ /*
+ * ACL is "self relative" ie ACL is stored in contiguous block of memory
+ * and "DP" ie the DACL is present
+ */
+ buf->sd.Control = cpu_to_le16(ACL_CONTROL_SR | ACL_CONTROL_DP);
+
+ /* offset owner, group and Sbz1 and SACL are all zero */
+ buf->sd.OffsetDacl = cpu_to_le32(ptr - (__u8 *)&buf->sd);
+ /* Ship the ACL for now. we will copy it into buf later. */
+ aclptr = ptr;
+ ptr += sizeof(struct smb3_acl);
+
+ /* create one ACE to hold the mode embedded in reserved special SID */
+ acelen = setup_special_mode_ACE((struct cifs_ace *)ptr, (__u64)mode);
+ ptr += acelen;
+ acl_size = acelen + sizeof(struct smb3_acl);
+ ace_count = 1;
+
+ if (set_owner) {
+ /* we do not need to reallocate buffer to add the two more ACEs. plenty of space */
+ acelen = setup_special_user_owner_ACE((struct cifs_ace *)ptr);
+ ptr += acelen;
+ acl_size += acelen;
+ ace_count += 1;
+ }
+
+ /* and one more ACE to allow access for authenticated users */
+ acelen = setup_authusers_ACE((struct cifs_ace *)ptr);
+ ptr += acelen;
+ acl_size += acelen;
+ ace_count += 1;
+
+ acl.AclRevision = ACL_REVISION; /* See 2.4.4.1 of MS-DTYP */
+ acl.AclSize = cpu_to_le16(acl_size);
+ acl.AceCount = cpu_to_le16(ace_count);
+ memcpy(aclptr, &acl, sizeof(struct smb3_acl));
+
+ buf->ccontext.DataLength = cpu_to_le32(ptr - (__u8 *)&buf->sd);
+ *len = roundup(ptr - (__u8 *)buf, 8);
+
+ return buf;
+}
+
+static int
+add_sd_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode, bool set_owner)
+{
+ struct smb2_create_req *req = iov[0].iov_base;
+ unsigned int num = *num_iovec;
+ unsigned int len = 0;
+
+ iov[num].iov_base = create_sd_buf(mode, set_owner, &len);
+ if (iov[num].iov_base == NULL)
+ return -ENOMEM;
+ iov[num].iov_len = len;
+ if (!req->CreateContextsOffset)
+ req->CreateContextsOffset = cpu_to_le32(
+ sizeof(struct smb2_create_req) +
+ iov[num - 1].iov_len);
+ le32_add_cpu(&req->CreateContextsLength, len);
+ *num_iovec = num + 1;
+ return 0;
+}
+
static struct crt_query_id_ctxt *
create_query_id_buf(void)
{
@@ -2293,6 +2501,7 @@
int flags = 0;
unsigned int total_len;
__le16 *utf16_path = NULL;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
cifs_dbg(FYI, "mkdir\n");
@@ -2301,13 +2510,14 @@
if (!utf16_path)
return -ENOMEM;
- if (!ses || !(ses->server)) {
+ if (!ses || !server) {
rc = -EIO;
goto err_free_path;
}
/* resource #2: request */
- rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_CREATE, tcon, server,
+ (void **) &req, &total_len);
if (rc)
goto err_free_path;
@@ -2393,7 +2603,8 @@
trace_smb3_posix_mkdir_enter(xid, tcon->tid, ses->Suid, CREATE_NOT_FILE,
FILE_WRITE_ATTRIBUTES);
/* resource #4: response buffer */
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
if (rc) {
cifs_stats_fail_inc(tcon, SMB2_CREATE_HE);
trace_smb3_posix_mkdir_err(xid, tcon->tid, ses->Suid,
@@ -2422,10 +2633,10 @@
}
int
-SMB2_open_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, __u8 *oplock,
+SMB2_open_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
+ struct smb_rqst *rqst, __u8 *oplock,
struct cifs_open_parms *oparms, __le16 *path)
{
- struct TCP_Server_Info *server = tcon->ses->server;
struct smb2_create_req *req;
unsigned int n_iov = 2;
__u32 file_attributes = 0;
@@ -2436,7 +2647,8 @@
__le16 *copy_path;
int rc;
- rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_CREATE, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -2556,18 +2768,35 @@
return rc;
}
- if ((oparms->disposition == FILE_CREATE) &&
- (oparms->mode != ACL_NO_MODE)) {
- if (n_iov > 2) {
- struct create_context *ccontext =
- (struct create_context *)iov[n_iov-1].iov_base;
- ccontext->Next =
- cpu_to_le32(iov[n_iov-1].iov_len);
+ if ((oparms->disposition != FILE_OPEN) && (oparms->cifs_sb)) {
+ bool set_mode;
+ bool set_owner;
+
+ if ((oparms->cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID) &&
+ (oparms->mode != ACL_NO_MODE))
+ set_mode = true;
+ else {
+ set_mode = false;
+ oparms->mode = ACL_NO_MODE;
}
- /* rc = add_sd_context(iov, &n_iov, oparms->mode); */
- if (rc)
- return rc;
+ if (oparms->cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL)
+ set_owner = true;
+ else
+ set_owner = false;
+
+ if (set_owner | set_mode) {
+ if (n_iov > 2) {
+ struct create_context *ccontext =
+ (struct create_context *)iov[n_iov-1].iov_base;
+ ccontext->Next = cpu_to_le32(iov[n_iov-1].iov_len);
+ }
+
+ cifs_dbg(FYI, "add sd with mode 0x%x\n", oparms->mode);
+ rc = add_sd_context(iov, &n_iov, oparms->mode, set_owner);
+ if (rc)
+ return rc;
+ }
}
if (n_iov > 2) {
@@ -2600,13 +2829,14 @@
int
SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
__u8 *oplock, struct smb2_file_all_info *buf,
+ struct create_posix_rsp *posix,
struct kvec *err_iov, int *buftype)
{
struct smb_rqst rqst;
struct smb2_create_rsp *rsp = NULL;
- struct TCP_Server_Info *server;
struct cifs_tcon *tcon = oparms->tcon;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
struct kvec iov[SMB2_CREATE_IOV_SIZE];
struct kvec rsp_iov = {NULL, 0};
int resp_buftype = CIFS_NO_BUFFER;
@@ -2614,9 +2844,7 @@
int flags = 0;
cifs_dbg(FYI, "create/open\n");
- if (ses && (ses->server))
- server = ses->server;
- else
+ if (!ses || !server)
return -EIO;
if (smb3_encryption_required(tcon))
@@ -2627,14 +2855,16 @@
rqst.rq_iov = iov;
rqst.rq_nvec = SMB2_CREATE_IOV_SIZE;
- rc = SMB2_open_init(tcon, &rqst, oplock, oparms, path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst, oplock, oparms, path);
if (rc)
goto creat_exit;
trace_smb3_open_enter(xid, tcon->tid, tcon->ses->Suid,
oparms->create_options, oparms->desired_access);
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags,
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags,
&rsp_iov);
rsp = (struct smb2_create_rsp *)rsp_iov.iov_base;
@@ -2649,8 +2879,8 @@
trace_smb3_open_err(xid, tcon->tid, ses->Suid,
oparms->create_options, oparms->desired_access, rc);
if (rc == -EREMCHG) {
- printk_once(KERN_WARNING "server share %s deleted\n",
- tcon->treeName);
+ pr_warn_once("server share %s deleted\n",
+ tcon->treeName);
tcon->need_reconnect = true;
}
goto creat_exit;
@@ -2678,7 +2908,7 @@
smb2_parse_contexts(server, rsp, &oparms->fid->epoch,
- oparms->fid->lease_key, oplock, buf);
+ oparms->fid->lease_key, oplock, buf, posix);
creat_exit:
SMB2_open_free(&rqst);
free_rsp_buf(resp_buftype, rsp);
@@ -2686,7 +2916,8 @@
}
int
-SMB2_ioctl_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
+SMB2_ioctl_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid, u32 opcode,
bool is_fsctl, char *in_data, u32 indatalen,
__u32 max_response_size)
@@ -2697,7 +2928,8 @@
int rc;
char *in_data_buf;
- rc = smb2_ioctl_req_init(opcode, tcon, (void **) &req, &total_len);
+ rc = smb2_ioctl_req_init(opcode, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -2799,12 +3031,12 @@
struct smb_rqst rqst;
struct smb2_ioctl_rsp *rsp = NULL;
struct cifs_ses *ses;
+ struct TCP_Server_Info *server;
struct kvec iov[SMB2_IOCTL_IOV_SIZE];
struct kvec rsp_iov = {NULL, 0};
int resp_buftype = CIFS_NO_BUFFER;
int rc = 0;
int flags = 0;
- struct TCP_Server_Info *server;
cifs_dbg(FYI, "SMB2 IOCTL\n");
@@ -2815,14 +3047,14 @@
if (plen)
*plen = 0;
- if (tcon)
- ses = tcon->ses;
- else
+ if (!tcon)
return -EIO;
+ ses = tcon->ses;
if (!ses)
return -EIO;
- server = ses->server;
+
+ server = cifs_pick_channel(ses);
if (!server)
return -EIO;
@@ -2834,12 +3066,14 @@
rqst.rq_iov = iov;
rqst.rq_nvec = SMB2_IOCTL_IOV_SIZE;
- rc = SMB2_ioctl_init(tcon, &rqst, persistent_fid, volatile_fid, opcode,
+ rc = SMB2_ioctl_init(tcon, server,
+ &rqst, persistent_fid, volatile_fid, opcode,
is_fsctl, in_data, indatalen, max_out_data_len);
if (rc)
goto ioctl_exit;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags,
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags,
&rsp_iov);
rsp = (struct smb2_ioctl_rsp *)rsp_iov.iov_base;
@@ -2927,20 +3161,26 @@
}
int
-SMB2_close_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
- u64 persistent_fid, u64 volatile_fid)
+SMB2_close_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
+ u64 persistent_fid, u64 volatile_fid, bool query_attrs)
{
struct smb2_close_req *req;
struct kvec *iov = rqst->rq_iov;
unsigned int total_len;
int rc;
- rc = smb2_plain_req_init(SMB2_CLOSE, tcon, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_CLOSE, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
req->PersistentFileId = persistent_fid;
req->VolatileFileId = volatile_fid;
+ if (query_attrs)
+ req->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
+ else
+ req->Flags = 0;
iov[0].iov_base = (char *)req;
iov[0].iov_len = total_len;
@@ -2955,21 +3195,24 @@
}
int
-SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
- u64 persistent_fid, u64 volatile_fid)
+__SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid,
+ struct smb2_file_network_open_info *pbuf)
{
struct smb_rqst rqst;
struct smb2_close_rsp *rsp = NULL;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
struct kvec iov[1];
struct kvec rsp_iov;
int resp_buftype = CIFS_NO_BUFFER;
int rc = 0;
int flags = 0;
+ bool query_attrs = false;
cifs_dbg(FYI, "Close\n");
- if (!ses || !(ses->server))
+ if (!ses || !server)
return -EIO;
if (smb3_encryption_required(tcon))
@@ -2980,12 +3223,19 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
+ /* check if need to ask server to return timestamps in close response */
+ if (pbuf)
+ query_attrs = true;
+
trace_smb3_close_enter(xid, persistent_fid, tcon->tid, ses->Suid);
- rc = SMB2_close_init(tcon, &rqst, persistent_fid, volatile_fid);
+ rc = SMB2_close_init(tcon, server,
+ &rqst, persistent_fid, volatile_fid,
+ query_attrs);
if (rc)
goto close_exit;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
rsp = (struct smb2_close_rsp *)rsp_iov.iov_base;
if (rc != 0) {
@@ -2993,14 +3243,18 @@
trace_smb3_close_err(xid, persistent_fid, tcon->tid, ses->Suid,
rc);
goto close_exit;
- } else
+ } else {
trace_smb3_close_done(xid, persistent_fid, tcon->tid,
ses->Suid);
+ /*
+ * Note that have to subtract 4 since struct network_open_info
+ * has a final 4 byte pad that close response does not have
+ */
+ if (pbuf)
+ memcpy(pbuf, (char *)&rsp->CreationTime, sizeof(*pbuf) - 4);
+ }
atomic_dec(&tcon->num_remote_opens);
-
- /* BB FIXME - decode close response, update inode for caching */
-
close_exit:
SMB2_close_free(&rqst);
free_rsp_buf(resp_buftype, rsp);
@@ -3019,6 +3273,13 @@
}
int
+SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid)
+{
+ return __SMB2_close(xid, tcon, persistent_fid, volatile_fid, NULL);
+}
+
+int
smb2_validate_iov(unsigned int offset, unsigned int buffer_length,
struct kvec *iov, unsigned int min_buf_size)
{
@@ -3042,7 +3303,7 @@
}
if ((begin_of_buf > end_of_smb) || (end_of_buf > end_of_smb)) {
- cifs_dbg(VFS, "illegal server response, bad offset to data\n");
+ cifs_dbg(VFS, "Invalid server response, bad offset to data\n");
return -EINVAL;
}
@@ -3074,7 +3335,8 @@
}
int
-SMB2_query_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
+SMB2_query_info_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid,
u8 info_class, u8 info_type, u32 additional_info,
size_t output_len, size_t input_len, void *input)
@@ -3084,8 +3346,8 @@
unsigned int total_len;
int rc;
- rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, (void **) &req,
- &total_len);
+ rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -3137,7 +3399,7 @@
if (!ses)
return -EIO;
- server = ses->server;
+ server = cifs_pick_channel(ses);
if (!server)
return -EIO;
@@ -3149,7 +3411,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = SMB2_query_info_init(tcon, &rqst, persistent_fid, volatile_fid,
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst, persistent_fid, volatile_fid,
info_class, info_type, additional_info,
output_len, 0, NULL);
if (rc)
@@ -3158,7 +3421,8 @@
trace_smb3_query_info_enter(xid, persistent_fid, tcon->tid,
ses->Suid, info_class, (__u32)info_type);
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
if (rc) {
@@ -3213,6 +3477,19 @@
}
int
+SMB311_posix_query_info(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid, struct smb311_posix_qinfo *data, u32 *plen)
+{
+ size_t output_len = sizeof(struct smb311_posix_qinfo *) +
+ (sizeof(struct cifs_sid) * 2) + (PATH_MAX * 2);
+ *plen = 0;
+
+ return query_info(xid, tcon, persistent_fid, volatile_fid,
+ SMB_FIND_FILE_POSIX_INFO, SMB2_O_INFO_FILE, 0,
+ output_len, sizeof(struct smb311_posix_qinfo), (void **)&data, plen);
+}
+
+int
SMB2_query_acl(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
void **data, u32 *plen)
@@ -3243,20 +3520,23 @@
static int
SMB2_notify_init(const unsigned int xid, struct smb_rqst *rqst,
- struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid,
- u32 completion_filter, bool watch_tree)
+ struct cifs_tcon *tcon, struct TCP_Server_Info *server,
+ u64 persistent_fid, u64 volatile_fid,
+ u32 completion_filter, bool watch_tree)
{
struct smb2_change_notify_req *req;
struct kvec *iov = rqst->rq_iov;
unsigned int total_len;
int rc;
- rc = smb2_plain_req_init(SMB2_CHANGE_NOTIFY, tcon, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_CHANGE_NOTIFY, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
req->PersistentFileId = persistent_fid;
req->VolatileFileId = volatile_fid;
+ /* See note 354 of MS-SMB2, 64K max */
req->OutputBufferLength =
cpu_to_le32(SMB2_MAX_BUFFER_SIZE - MAX_SMB2_HDR_SIZE);
req->CompletionFilter = cpu_to_le32(completion_filter);
@@ -3277,6 +3557,7 @@
u32 completion_filter)
{
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
struct smb_rqst rqst;
struct kvec iov[1];
struct kvec rsp_iov = {NULL, 0};
@@ -3285,7 +3566,7 @@
int rc = 0;
cifs_dbg(FYI, "change notify\n");
- if (!ses || !(ses->server))
+ if (!ses || !server)
return -EIO;
if (smb3_encryption_required(tcon))
@@ -3296,14 +3577,16 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = SMB2_notify_init(xid, &rqst, tcon, persistent_fid, volatile_fid,
+ rc = SMB2_notify_init(xid, &rqst, tcon, server,
+ persistent_fid, volatile_fid,
completion_filter, watch_tree);
if (rc)
goto cnotify_exit;
trace_smb3_notify_enter(xid, persistent_fid, tcon->tid, ses->Suid,
(u8)watch_tree, completion_filter);
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
if (rc != 0) {
cifs_stats_fail_inc(tcon, SMB2_CHANGE_NOTIFY_HE);
@@ -3393,7 +3676,7 @@
spin_unlock(&cifs_tcp_ses_lock);
list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) {
- rc = smb2_reconnect(SMB2_INTERNAL_CMD, tcon);
+ rc = smb2_reconnect(SMB2_INTERNAL_CMD, tcon, server);
if (!rc)
cifs_reopen_persistent_handles(tcon);
else
@@ -3429,11 +3712,12 @@
if (server->tcpStatus == CifsNeedNegotiate) {
/* No need to send echo on newly established connections */
- queue_delayed_work(cifsiod_wq, &server->reconnect, 0);
+ mod_delayed_work(cifsiod_wq, &server->reconnect, 0);
return rc;
}
- rc = smb2_plain_req_init(SMB2_ECHO, NULL, (void **)&req, &total_len);
+ rc = smb2_plain_req_init(SMB2_ECHO, NULL, server,
+ (void **)&req, &total_len);
if (rc)
return rc;
@@ -3460,14 +3744,16 @@
int
SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst,
- struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid)
+ struct cifs_tcon *tcon, struct TCP_Server_Info *server,
+ u64 persistent_fid, u64 volatile_fid)
{
struct smb2_flush_req *req;
struct kvec *iov = rqst->rq_iov;
unsigned int total_len;
int rc;
- rc = smb2_plain_req_init(SMB2_FLUSH, tcon, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_FLUSH, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -3488,6 +3774,7 @@
struct smb_rqst rqst;
struct kvec iov[1];
struct kvec rsp_iov = {NULL, 0};
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
int resp_buftype = CIFS_NO_BUFFER;
int flags = 0;
int rc = 0;
@@ -3504,12 +3791,14 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = SMB2_flush_init(xid, &rqst, tcon, persistent_fid, volatile_fid);
+ rc = SMB2_flush_init(xid, &rqst, tcon, server,
+ persistent_fid, volatile_fid);
if (rc)
goto flush_exit;
trace_smb3_flush_enter(xid, persistent_fid, tcon->tid, ses->Suid);
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
if (rc != 0) {
cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE);
@@ -3537,14 +3826,13 @@
int rc = -EACCES;
struct smb2_read_plain_req *req = NULL;
struct smb2_sync_hdr *shdr;
- struct TCP_Server_Info *server;
+ struct TCP_Server_Info *server = io_parms->server;
- rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, (void **) &req,
- total_len);
+ rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, server,
+ (void **) &req, total_len);
if (rc)
return rc;
- server = io_parms->tcon->ses->server;
if (server == NULL)
return -ECONNABORTED;
@@ -3573,8 +3861,7 @@
rdata->bytes >= server->smbd_conn->rdma_readwrite_threshold) {
struct smbd_buffer_descriptor_v1 *v1;
- bool need_invalidate =
- io_parms->tcon->ses->server->dialect == SMB30_PROT_ID;
+ bool need_invalidate = server->dialect == SMB30_PROT_ID;
rdata->mr = smbd_register_mr(
server->smbd_conn, rdata->pages,
@@ -3631,7 +3918,7 @@
{
struct cifs_readdata *rdata = mid->callback_data;
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
- struct TCP_Server_Info *server = tcon->ses->server;
+ struct TCP_Server_Info *server = rdata->server;
struct smb2_sync_hdr *shdr =
(struct smb2_sync_hdr *)rdata->iov[0].iov_base;
struct cifs_credits credits = { .value = 0, .instance = 0 };
@@ -3643,6 +3930,10 @@
.rq_pagesz = rdata->pagesz,
.rq_tailsz = rdata->tailsz };
+ WARN_ONCE(rdata->server != mid->server,
+ "rdata server %p != mid server %p",
+ rdata->server, mid->server);
+
cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n",
__func__, mid->mid, mid->mid_state, rdata->result,
rdata->bytes);
@@ -3677,7 +3968,7 @@
case MID_RESPONSE_MALFORMED:
credits.value = le16_to_cpu(shdr->CreditRequest);
credits.instance = server->reconnect_instance;
- /* fall through */
+ fallthrough;
default:
rdata->result = -EIO;
}
@@ -3720,20 +4011,23 @@
struct smb_rqst rqst = { .rq_iov = rdata->iov,
.rq_nvec = 1 };
struct TCP_Server_Info *server;
+ struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
unsigned int total_len;
cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n",
__func__, rdata->offset, rdata->bytes);
+ if (!rdata->server)
+ rdata->server = cifs_pick_channel(tcon->ses);
+
io_parms.tcon = tlink_tcon(rdata->cfile->tlink);
+ io_parms.server = server = rdata->server;
io_parms.offset = rdata->offset;
io_parms.length = rdata->bytes;
io_parms.persistent_fid = rdata->cfile->fid.persistent_fid;
io_parms.volatile_fid = rdata->cfile->fid.volatile_fid;
io_parms.pid = rdata->pid;
- server = io_parms.tcon->ses->server;
-
rc = smb2_new_read_req(
(void **) &buf, &total_len, &io_parms, rdata, 0, 0);
if (rc)
@@ -3760,7 +4054,7 @@
}
kref_get(&rdata->refcount);
- rc = cifs_call_async(io_parms.tcon->ses->server, &rqst,
+ rc = cifs_call_async(server, &rqst,
cifs_readv_receive, smb2_readv_callback,
smb3_handle_read_data, rdata, flags,
&rdata->credits);
@@ -3792,6 +4086,9 @@
int flags = CIFS_LOG_ERROR;
struct cifs_ses *ses = io_parms->tcon->ses;
+ if (!io_parms->server)
+ io_parms->server = cifs_pick_channel(io_parms->tcon->ses);
+
*nbytes = 0;
rc = smb2_new_read_req((void **)&req, &total_len, io_parms, NULL, 0, 0);
if (rc)
@@ -3807,7 +4104,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, io_parms->server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
rsp = (struct smb2_read_rsp *)rsp_iov.iov_base;
if (rc) {
@@ -3863,11 +4161,15 @@
{
struct cifs_writedata *wdata = mid->callback_data;
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
- struct TCP_Server_Info *server = tcon->ses->server;
+ struct TCP_Server_Info *server = wdata->server;
unsigned int written;
struct smb2_write_rsp *rsp = (struct smb2_write_rsp *)mid->resp_buf;
struct cifs_credits credits = { .value = 0, .instance = 0 };
+ WARN_ONCE(wdata->server != mid->server,
+ "wdata server %p != mid server %p",
+ wdata->server, mid->server);
+
switch (mid->mid_state) {
case MID_RESPONSE_RECEIVED:
credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest);
@@ -3898,7 +4200,7 @@
case MID_RESPONSE_MALFORMED:
credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest);
credits.instance = server->reconnect_instance;
- /* fall through */
+ fallthrough;
default:
wdata->result = -EIO;
break;
@@ -3923,8 +4225,8 @@
tcon->tid, tcon->ses->Suid, wdata->offset,
wdata->bytes, wdata->result);
if (wdata->result == -ENOSPC)
- printk_once(KERN_WARNING "Out of space writing to %s\n",
- tcon->treeName);
+ pr_warn_once("Out of space writing to %s\n",
+ tcon->treeName);
} else
trace_smb3_write_done(0 /* no xid */,
wdata->cfile->fid.persistent_fid,
@@ -3945,12 +4247,16 @@
struct smb2_write_req *req = NULL;
struct smb2_sync_hdr *shdr;
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
- struct TCP_Server_Info *server = tcon->ses->server;
+ struct TCP_Server_Info *server = wdata->server;
struct kvec iov[1];
struct smb_rqst rqst = { };
unsigned int total_len;
- rc = smb2_plain_req_init(SMB2_WRITE, tcon, (void **) &req, &total_len);
+ if (!wdata->server)
+ server = wdata->server = cifs_pick_channel(tcon->ses);
+
+ rc = smb2_plain_req_init(SMB2_WRITE, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -4088,20 +4394,24 @@
struct kvec rsp_iov;
int flags = 0;
unsigned int total_len;
+ struct TCP_Server_Info *server;
*nbytes = 0;
if (n_vec < 1)
return rc;
- rc = smb2_plain_req_init(SMB2_WRITE, io_parms->tcon, (void **) &req,
- &total_len);
+ if (!io_parms->server)
+ io_parms->server = cifs_pick_channel(io_parms->tcon->ses);
+ server = io_parms->server;
+ if (server == NULL)
+ return -ECONNABORTED;
+
+ rc = smb2_plain_req_init(SMB2_WRITE, io_parms->tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
- if (io_parms->tcon->ses->server == NULL)
- return -ECONNABORTED;
-
if (smb3_encryption_required(io_parms->tcon))
flags |= CIFS_TRANSFORM_REQ;
@@ -4130,7 +4440,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = n_vec + 1;
- rc = cifs_send_recv(xid, io_parms->tcon->ses, &rqst,
+ rc = cifs_send_recv(xid, io_parms->tcon->ses, server,
+ &rqst,
&resp_buftype, flags, &rsp_iov);
rsp = (struct smb2_write_rsp *)rsp_iov.iov_base;
@@ -4154,8 +4465,104 @@
return rc;
}
+int posix_info_sid_size(const void *beg, const void *end)
+{
+ size_t subauth;
+ int total;
+
+ if (beg + 1 > end)
+ return -1;
+
+ subauth = *(u8 *)(beg+1);
+ if (subauth < 1 || subauth > 15)
+ return -1;
+
+ total = 1 + 1 + 6 + 4*subauth;
+ if (beg + total > end)
+ return -1;
+
+ return total;
+}
+
+int posix_info_parse(const void *beg, const void *end,
+ struct smb2_posix_info_parsed *out)
+
+{
+ int total_len = 0;
+ int sid_len;
+ int name_len;
+ const void *owner_sid;
+ const void *group_sid;
+ const void *name;
+
+ /* if no end bound given, assume payload to be correct */
+ if (!end) {
+ const struct smb2_posix_info *p = beg;
+
+ end = beg + le32_to_cpu(p->NextEntryOffset);
+ /* last element will have a 0 offset, pick a sensible bound */
+ if (end == beg)
+ end += 0xFFFF;
+ }
+
+ /* check base buf */
+ if (beg + sizeof(struct smb2_posix_info) > end)
+ return -1;
+ total_len = sizeof(struct smb2_posix_info);
+
+ /* check owner sid */
+ owner_sid = beg + total_len;
+ sid_len = posix_info_sid_size(owner_sid, end);
+ if (sid_len < 0)
+ return -1;
+ total_len += sid_len;
+
+ /* check group sid */
+ group_sid = beg + total_len;
+ sid_len = posix_info_sid_size(group_sid, end);
+ if (sid_len < 0)
+ return -1;
+ total_len += sid_len;
+
+ /* check name len */
+ if (beg + total_len + 4 > end)
+ return -1;
+ name_len = le32_to_cpu(*(__le32 *)(beg + total_len));
+ if (name_len < 1 || name_len > 0xFFFF)
+ return -1;
+ total_len += 4;
+
+ /* check name */
+ name = beg + total_len;
+ if (name + name_len > end)
+ return -1;
+ total_len += name_len;
+
+ if (out) {
+ out->base = beg;
+ out->size = total_len;
+ out->name_len = name_len;
+ out->name = name;
+ memcpy(&out->owner, owner_sid,
+ posix_info_sid_size(owner_sid, end));
+ memcpy(&out->group, group_sid,
+ posix_info_sid_size(group_sid, end));
+ }
+ return total_len;
+}
+
+static int posix_info_extra_size(const void *beg, const void *end)
+{
+ int len = posix_info_parse(beg, end, NULL);
+
+ if (len < 0)
+ return -1;
+ return len - sizeof(struct smb2_posix_info);
+}
+
static unsigned int
-num_entries(char *bufstart, char *end_of_buf, char **lastentry, size_t size)
+num_entries(int infotype, char *bufstart, char *end_of_buf, char **lastentry,
+ size_t size)
{
int len;
unsigned int entrycount = 0;
@@ -4179,8 +4586,13 @@
entryptr = entryptr + next_offset;
dir_info = (FILE_DIRECTORY_INFO *)entryptr;
- len = le32_to_cpu(dir_info->FileNameLength);
- if (entryptr + len < entryptr ||
+ if (infotype == SMB_FIND_FILE_POSIX_INFO)
+ len = posix_info_extra_size(entryptr, end_of_buf);
+ else
+ len = le32_to_cpu(dir_info->FileNameLength);
+
+ if (len < 0 ||
+ entryptr + len < entryptr ||
entryptr + len > end_of_buf ||
entryptr + len + size > end_of_buf) {
cifs_dbg(VFS, "directory entry name would overflow frame end of buf %p\n",
@@ -4202,56 +4614,42 @@
/*
* Readdir/FindFirst
*/
-int
-SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
- u64 persistent_fid, u64 volatile_fid, int index,
- struct cifs_search_info *srch_inf)
+int SMB2_query_directory_init(const unsigned int xid,
+ struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
+ u64 persistent_fid, u64 volatile_fid,
+ int index, int info_level)
{
- struct smb_rqst rqst;
struct smb2_query_directory_req *req;
- struct smb2_query_directory_rsp *rsp = NULL;
- struct kvec iov[2];
- struct kvec rsp_iov;
- int rc = 0;
- int len;
- int resp_buftype = CIFS_NO_BUFFER;
unsigned char *bufptr;
- struct TCP_Server_Info *server;
- struct cifs_ses *ses = tcon->ses;
__le16 asteriks = cpu_to_le16('*');
- char *end_of_smb;
- unsigned int output_size = CIFSMaxBufSize;
- size_t info_buf_size;
- int flags = 0;
+ unsigned int output_size = CIFSMaxBufSize -
+ MAX_SMB2_CREATE_RESPONSE_SIZE -
+ MAX_SMB2_CLOSE_RESPONSE_SIZE;
unsigned int total_len;
+ struct kvec *iov = rqst->rq_iov;
+ int len, rc;
- if (ses && (ses->server))
- server = ses->server;
- else
- return -EIO;
-
- rc = smb2_plain_req_init(SMB2_QUERY_DIRECTORY, tcon, (void **) &req,
- &total_len);
+ rc = smb2_plain_req_init(SMB2_QUERY_DIRECTORY, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
- if (smb3_encryption_required(tcon))
- flags |= CIFS_TRANSFORM_REQ;
-
- switch (srch_inf->info_level) {
+ switch (info_level) {
case SMB_FIND_FILE_DIRECTORY_INFO:
req->FileInformationClass = FILE_DIRECTORY_INFORMATION;
- info_buf_size = sizeof(FILE_DIRECTORY_INFO) - 1;
break;
case SMB_FIND_FILE_ID_FULL_DIR_INFO:
req->FileInformationClass = FILEID_FULL_DIRECTORY_INFORMATION;
- info_buf_size = sizeof(SEARCH_ID_FULL_DIR_INFO) - 1;
+ break;
+ case SMB_FIND_FILE_POSIX_INFO:
+ req->FileInformationClass = SMB_FIND_FILE_POSIX_INFO;
break;
default:
cifs_tcon_dbg(VFS, "info level %u isn't supported\n",
- srch_inf->info_level);
- rc = -EINVAL;
- goto qdir_exit;
+ info_level);
+ return -EINVAL;
}
req->FileIndex = cpu_to_le32(index);
@@ -4280,15 +4678,126 @@
iov[1].iov_base = (char *)(req->Buffer);
iov[1].iov_len = len;
- memset(&rqst, 0, sizeof(struct smb_rqst));
- rqst.rq_iov = iov;
- rqst.rq_nvec = 2;
-
trace_smb3_query_dir_enter(xid, persistent_fid, tcon->tid,
tcon->ses->Suid, index, output_size);
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
- cifs_small_buf_release(req);
+ return 0;
+}
+
+void SMB2_query_directory_free(struct smb_rqst *rqst)
+{
+ if (rqst && rqst->rq_iov) {
+ cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */
+ }
+}
+
+int
+smb2_parse_query_directory(struct cifs_tcon *tcon,
+ struct kvec *rsp_iov,
+ int resp_buftype,
+ struct cifs_search_info *srch_inf)
+{
+ struct smb2_query_directory_rsp *rsp;
+ size_t info_buf_size;
+ char *end_of_smb;
+ int rc;
+
+ rsp = (struct smb2_query_directory_rsp *)rsp_iov->iov_base;
+
+ switch (srch_inf->info_level) {
+ case SMB_FIND_FILE_DIRECTORY_INFO:
+ info_buf_size = sizeof(FILE_DIRECTORY_INFO) - 1;
+ break;
+ case SMB_FIND_FILE_ID_FULL_DIR_INFO:
+ info_buf_size = sizeof(SEARCH_ID_FULL_DIR_INFO) - 1;
+ break;
+ case SMB_FIND_FILE_POSIX_INFO:
+ /* note that posix payload are variable size */
+ info_buf_size = sizeof(struct smb2_posix_info);
+ break;
+ default:
+ cifs_tcon_dbg(VFS, "info level %u isn't supported\n",
+ srch_inf->info_level);
+ return -EINVAL;
+ }
+
+ rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
+ le32_to_cpu(rsp->OutputBufferLength), rsp_iov,
+ info_buf_size);
+ if (rc) {
+ cifs_tcon_dbg(VFS, "bad info payload");
+ return rc;
+ }
+
+ srch_inf->unicode = true;
+
+ if (srch_inf->ntwrk_buf_start) {
+ if (srch_inf->smallBuf)
+ cifs_small_buf_release(srch_inf->ntwrk_buf_start);
+ else
+ cifs_buf_release(srch_inf->ntwrk_buf_start);
+ }
+ srch_inf->ntwrk_buf_start = (char *)rsp;
+ srch_inf->srch_entries_start = srch_inf->last_entry =
+ (char *)rsp + le16_to_cpu(rsp->OutputBufferOffset);
+ end_of_smb = rsp_iov->iov_len + (char *)rsp;
+
+ srch_inf->entries_in_buffer = num_entries(
+ srch_inf->info_level,
+ srch_inf->srch_entries_start,
+ end_of_smb,
+ &srch_inf->last_entry,
+ info_buf_size);
+
+ srch_inf->index_of_last_entry += srch_inf->entries_in_buffer;
+ cifs_dbg(FYI, "num entries %d last_index %lld srch start %p srch end %p\n",
+ srch_inf->entries_in_buffer, srch_inf->index_of_last_entry,
+ srch_inf->srch_entries_start, srch_inf->last_entry);
+ if (resp_buftype == CIFS_LARGE_BUFFER)
+ srch_inf->smallBuf = false;
+ else if (resp_buftype == CIFS_SMALL_BUFFER)
+ srch_inf->smallBuf = true;
+ else
+ cifs_tcon_dbg(VFS, "Invalid search buffer type\n");
+
+ return 0;
+}
+
+int
+SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid, int index,
+ struct cifs_search_info *srch_inf)
+{
+ struct smb_rqst rqst;
+ struct kvec iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
+ struct smb2_query_directory_rsp *rsp = NULL;
+ int resp_buftype = CIFS_NO_BUFFER;
+ struct kvec rsp_iov;
+ int rc = 0;
+ struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
+ int flags = 0;
+
+ if (!ses || !(ses->server))
+ return -EIO;
+
+ if (smb3_encryption_required(tcon))
+ flags |= CIFS_TRANSFORM_REQ;
+
+ memset(&rqst, 0, sizeof(struct smb_rqst));
+ memset(&iov, 0, sizeof(iov));
+ rqst.rq_iov = iov;
+ rqst.rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
+
+ rc = SMB2_query_directory_init(xid, tcon, server,
+ &rqst, persistent_fid,
+ volatile_fid, index,
+ srch_inf->info_level);
+ if (rc)
+ goto qdir_exit;
+
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
rsp = (struct smb2_query_directory_rsp *)rsp_iov.iov_base;
if (rc) {
@@ -4306,62 +4815,38 @@
goto qdir_exit;
}
- rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
- le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
- info_buf_size);
+ rc = smb2_parse_query_directory(tcon, &rsp_iov, resp_buftype,
+ srch_inf);
if (rc) {
trace_smb3_query_dir_err(xid, persistent_fid, tcon->tid,
tcon->ses->Suid, index, 0, rc);
goto qdir_exit;
}
-
- srch_inf->unicode = true;
-
- if (srch_inf->ntwrk_buf_start) {
- if (srch_inf->smallBuf)
- cifs_small_buf_release(srch_inf->ntwrk_buf_start);
- else
- cifs_buf_release(srch_inf->ntwrk_buf_start);
- }
- srch_inf->ntwrk_buf_start = (char *)rsp;
- srch_inf->srch_entries_start = srch_inf->last_entry =
- (char *)rsp + le16_to_cpu(rsp->OutputBufferOffset);
- end_of_smb = rsp_iov.iov_len + (char *)rsp;
- srch_inf->entries_in_buffer =
- num_entries(srch_inf->srch_entries_start, end_of_smb,
- &srch_inf->last_entry, info_buf_size);
- srch_inf->index_of_last_entry += srch_inf->entries_in_buffer;
- cifs_dbg(FYI, "num entries %d last_index %lld srch start %p srch end %p\n",
- srch_inf->entries_in_buffer, srch_inf->index_of_last_entry,
- srch_inf->srch_entries_start, srch_inf->last_entry);
- if (resp_buftype == CIFS_LARGE_BUFFER)
- srch_inf->smallBuf = false;
- else if (resp_buftype == CIFS_SMALL_BUFFER)
- srch_inf->smallBuf = true;
- else
- cifs_tcon_dbg(VFS, "illegal search buffer type\n");
+ resp_buftype = CIFS_NO_BUFFER;
trace_smb3_query_dir_done(xid, persistent_fid, tcon->tid,
tcon->ses->Suid, index, srch_inf->entries_in_buffer);
- return rc;
qdir_exit:
+ SMB2_query_directory_free(&rqst);
free_rsp_buf(resp_buftype, rsp);
return rc;
}
int
-SMB2_set_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
- u64 persistent_fid, u64 volatile_fid, u32 pid, u8 info_class,
- u8 info_type, u32 additional_info,
- void **data, unsigned int *size)
+SMB2_set_info_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
+ u64 persistent_fid, u64 volatile_fid, u32 pid,
+ u8 info_class, u8 info_type, u32 additional_info,
+ void **data, unsigned int *size)
{
struct smb2_set_info_req *req;
struct kvec *iov = rqst->rq_iov;
unsigned int i, total_len;
int rc;
- rc = smb2_plain_req_init(SMB2_SET_INFO, tcon, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_SET_INFO, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -4412,9 +4897,10 @@
int rc = 0;
int resp_buftype;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
int flags = 0;
- if (!ses || !(ses->server))
+ if (!ses || !server)
return -EIO;
if (!num)
@@ -4431,7 +4917,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = num;
- rc = SMB2_set_info_init(tcon, &rqst, persistent_fid, volatile_fid, pid,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst, persistent_fid, volatile_fid, pid,
info_class, info_type, additional_info,
data, size);
if (rc) {
@@ -4440,7 +4927,8 @@
}
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags,
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags,
&rsp_iov);
SMB2_set_info_free(&rqst);
rsp = (struct smb2_set_info_rsp *)rsp_iov.iov_base;
@@ -4503,6 +4991,7 @@
int rc;
struct smb2_oplock_break *req = NULL;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
int flags = CIFS_OBREAK_OP;
unsigned int total_len;
struct kvec iov[1];
@@ -4510,8 +4999,8 @@
int resp_buf_type;
cifs_dbg(FYI, "SMB2_oplock_break\n");
- rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req,
- &total_len);
+ rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -4532,7 +5021,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buf_type, flags, &rsp_iov);
cifs_small_buf_release(req);
if (rc) {
@@ -4575,8 +5065,10 @@
}
static int
-build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon, int level,
- int outbuf_len, u64 persistent_fid, u64 volatile_fid)
+build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ int level, int outbuf_len, u64 persistent_fid,
+ u64 volatile_fid)
{
int rc;
struct smb2_query_info_req *req;
@@ -4584,11 +5076,11 @@
cifs_dbg(FYI, "Query FSInfo level %d\n", level);
- if ((tcon->ses == NULL) || (tcon->ses->server == NULL))
+ if ((tcon->ses == NULL) || server == NULL)
return -EIO;
- rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, (void **) &req,
- &total_len);
+ rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -4618,10 +5110,12 @@
int rc = 0;
int resp_buftype;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
FILE_SYSTEM_POSIX_INFO *info = NULL;
int flags = 0;
- rc = build_qfs_info_req(&iov, tcon, FS_POSIX_INFORMATION,
+ rc = build_qfs_info_req(&iov, tcon, server,
+ FS_POSIX_INFORMATION,
sizeof(FILE_SYSTEM_POSIX_INFO),
persistent_fid, volatile_fid);
if (rc)
@@ -4634,7 +5128,8 @@
rqst.rq_iov = &iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
cifs_small_buf_release(iov.iov_base);
if (rc) {
cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
@@ -4666,10 +5161,12 @@
int rc = 0;
int resp_buftype;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
struct smb2_fs_full_size_info *info = NULL;
int flags = 0;
- rc = build_qfs_info_req(&iov, tcon, FS_FULL_SIZE_INFORMATION,
+ rc = build_qfs_info_req(&iov, tcon, server,
+ FS_FULL_SIZE_INFORMATION,
sizeof(struct smb2_fs_full_size_info),
persistent_fid, volatile_fid);
if (rc)
@@ -4682,7 +5179,8 @@
rqst.rq_iov = &iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
cifs_small_buf_release(iov.iov_base);
if (rc) {
cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
@@ -4714,6 +5212,7 @@
int rc = 0;
int resp_buftype, max_len, min_len;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
unsigned int rsp_len, offset;
int flags = 0;
@@ -4734,7 +5233,8 @@
return -EINVAL;
}
- rc = build_qfs_info_req(&iov, tcon, level, max_len,
+ rc = build_qfs_info_req(&iov, tcon, server,
+ level, max_len,
persistent_fid, volatile_fid);
if (rc)
return rc;
@@ -4746,7 +5246,8 @@
rqst.rq_iov = &iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buftype, flags, &rsp_iov);
cifs_small_buf_release(iov.iov_base);
if (rc) {
cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
@@ -4799,10 +5300,12 @@
unsigned int count;
int flags = CIFS_NO_RSP_BUF;
unsigned int total_len;
+ struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
cifs_dbg(FYI, "smb2_lockv num lock %d\n", num_lock);
- rc = smb2_plain_req_init(SMB2_LOCK, tcon, (void **) &req, &total_len);
+ rc = smb2_plain_req_init(SMB2_LOCK, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -4828,7 +5331,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 2;
- rc = cifs_send_recv(xid, tcon->ses, &rqst, &resp_buf_type, flags,
+ rc = cifs_send_recv(xid, tcon->ses, server,
+ &rqst, &resp_buf_type, flags,
&rsp_iov);
cifs_small_buf_release(req);
if (rc) {
@@ -4873,10 +5377,11 @@
int resp_buf_type;
__u64 *please_key_high;
__u64 *please_key_low;
+ struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
cifs_dbg(FYI, "SMB2_lease_break\n");
- rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req,
- &total_len);
+ rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, server,
+ (void **) &req, &total_len);
if (rc)
return rc;
@@ -4899,7 +5404,8 @@
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
- rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov);
+ rc = cifs_send_recv(xid, ses, server,
+ &rqst, &resp_buf_type, flags, &rsp_iov);
cifs_small_buf_release(req);
please_key_low = (__u64 *)lease_key;
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 739556e..56ec9fb 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -25,12 +25,13 @@
#define _SMB2PDU_H
#include <net/sock.h>
+#include <cifsacl.h>
/*
* Note that, due to trying to use names similar to the protocol specifications,
* there are many mixed case field names in the structures below. Although
* this does not match typical Linux kernel style, it is necessary to be
- * be able to match against the protocol specfication.
+ * able to match against the protocol specfication.
*
* SMB2 commands
* Some commands have minimal (wct=0,bcc=0), or uninteresting, responses
@@ -90,6 +91,7 @@
#define SMB2_PROTO_NUMBER cpu_to_le32(0x424d53fe)
#define SMB2_TRANSFORM_PROTO_NUM cpu_to_le32(0x424d53fd)
+#define SMB2_COMPRESSION_TRANSFORM_ID cpu_to_le32(0x424d53fc)
/*
* SMB2 Header Definition
@@ -118,24 +120,77 @@
__u8 Signature[16];
} __packed;
+/* The total header size for SMB2 read and write */
+#define SMB2_READWRITE_PDU_HEADER_SIZE (48 + sizeof(struct smb2_sync_hdr))
+
struct smb2_sync_pdu {
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize2; /* size of wct area (varies, request specific) */
} __packed;
-#define SMB3_AES128CCM_NONCE 11
-#define SMB3_AES128GCM_NONCE 12
+#define SMB3_AES_CCM_NONCE 11
+#define SMB3_AES_GCM_NONCE 12
+/* Transform flags (for 3.0 dialect this flag indicates CCM */
+#define TRANSFORM_FLAG_ENCRYPTED 0x0001
struct smb2_transform_hdr {
__le32 ProtocolId; /* 0xFD 'S' 'M' 'B' */
__u8 Signature[16];
__u8 Nonce[16];
__le32 OriginalMessageSize;
__u16 Reserved1;
- __le16 Flags; /* EncryptionAlgorithm */
+ __le16 Flags; /* EncryptionAlgorithm for 3.0, enc enabled for 3.1.1 */
__u64 SessionId;
} __packed;
+/* See MS-SMB2 2.2.42 */
+struct smb2_compression_transform_hdr {
+ __le32 ProtocolId; /* 0xFC 'S' 'M' 'B' */
+ __le32 OriginalCompressedSegmentSize;
+ __le16 CompressionAlgorithm;
+ __le16 Flags;
+ __le16 Length; /* if chained it is length, else offset */
+} __packed;
+
+/* See MS-SMB2 2.2.42.1 */
+#define SMB2_COMPRESSION_FLAG_NONE 0x0000
+#define SMB2_COMPRESSION_FLAG_CHAINED 0x0001
+
+struct compression_payload_header {
+ __le16 CompressionAlgorithm;
+ __le16 Flags;
+ __le32 Length; /* length of compressed playload including field below if present */
+ /* __le32 OriginalPayloadSize; */ /* optional */
+} __packed;
+
+/* See MS-SMB2 2.2.42.2 */
+struct compression_pattern_payload_v1 {
+ __le16 Pattern;
+ __le16 Reserved1;
+ __le16 Reserved2;
+ __le32 Repetitions;
+} __packed;
+
+/* See MS-SMB2 2.2.43 */
+struct smb2_rdma_transform {
+ __le16 RdmaDescriptorOffset;
+ __le16 RdmaDescriptorLength;
+ __le32 Channel; /* for values see channel description in smb2 read above */
+ __le16 TransformCount;
+ __le16 Reserved1;
+ __le32 Reserved2;
+} __packed;
+
+struct smb2_rdma_encryption_transform {
+ __le16 TransformType;
+ __le16 SignatureLength;
+ __le16 NonceLength;
+ __u16 Reserved;
+ __u8 Signature[]; /* variable length */
+ /* u8 Nonce[] */
+ /* followed by padding */
+} __packed;
+
/*
* SMB2 flag definitions
*/
@@ -181,7 +236,7 @@
__le16 PrintNameOffset;
__le16 PrintNameLength;
__le32 Flags;
- __u8 PathBuffer[0];
+ __u8 PathBuffer[];
} __packed;
/* SMB 3.1.1 and later dialects. See MS-SMB2 section 2.2.2.1 */
@@ -191,6 +246,10 @@
__u8 ErrorContextData; /* ErrorDataLength long array */
} __packed;
+/* ErrorId values */
+#define SMB2_ERROR_ID_DEFAULT 0x00000000
+#define SMB2_ERROR_ID_SHARE_REDIRECT cpu_to_le32(0x72645253) /* "rdRS" */
+
/* Defines for Type field below (see MS-SMB2 2.2.2.2.2.1) */
#define MOVE_DST_IPADDR_V4 cpu_to_le32(0x00000001)
#define MOVE_DST_IPADDR_V6 cpu_to_le32(0x00000002)
@@ -209,7 +268,7 @@
__le16 Flags;
__le16 TargetType;
__le32 IPAddrCount;
- struct move_dst_ipaddr IpAddrMoveList[0];
+ struct move_dst_ipaddr IpAddrMoveList[];
/* __u8 ResourceName[] */ /* Name of share as counted Unicode string */
} __packed;
@@ -262,6 +321,9 @@
#define SMB2_ENCRYPTION_CAPABILITIES cpu_to_le16(2)
#define SMB2_COMPRESSION_CAPABILITIES cpu_to_le16(3)
#define SMB2_NETNAME_NEGOTIATE_CONTEXT_ID cpu_to_le16(5)
+#define SMB2_TRANSPORT_CAPABILITIES cpu_to_le16(6)
+#define SMB2_RDMA_TRANSFORM_CAPABILITIES cpu_to_le16(7)
+#define SMB2_SIGNING_CAPABILITIES cpu_to_le16(8)
#define SMB2_POSIX_EXTENSIONS_AVAILABLE cpu_to_le16(0x100)
struct smb2_neg_context {
@@ -298,6 +360,9 @@
/* Encryption Algorithms Ciphers */
#define SMB2_ENCRYPTION_AES128_CCM cpu_to_le16(0x0001)
#define SMB2_ENCRYPTION_AES128_GCM cpu_to_le16(0x0002)
+/* we currently do not request AES256_CCM since presumably GCM faster */
+#define SMB2_ENCRYPTION_AES256_CCM cpu_to_le16(0x0003)
+#define SMB2_ENCRYPTION_AES256_GCM cpu_to_le16(0x0004)
/* Min encrypt context data is one cipher so 2 bytes + 2 byte count field */
#define MIN_ENCRYPT_CTXT_DATA_LEN 4
@@ -305,8 +370,9 @@
__le16 ContextType; /* 2 */
__le16 DataLength;
__le32 Reserved;
- __le16 CipherCount; /* AES-128-GCM and AES-128-CCM */
- __le16 Ciphers[2];
+ /* CipherCount usally 2, but can be 3 when AES256-GCM enabled */
+ __le16 CipherCount; /* AES128-GCM and AES128-CCM by default */
+ __le16 Ciphers[3];
} __packed;
/* See MS-SMB2 2.2.3.1.3 */
@@ -314,6 +380,12 @@
#define SMB3_COMPRESS_LZNT1 cpu_to_le16(0x0001)
#define SMB3_COMPRESS_LZ77 cpu_to_le16(0x0002)
#define SMB3_COMPRESS_LZ77_HUFF cpu_to_le16(0x0003)
+/* Pattern scanning algorithm See MS-SMB2 3.1.4.4.1 */
+#define SMB3_COMPRESS_PATTERN cpu_to_le16(0x0004) /* Pattern_V1 */
+
+/* Compression Flags */
+#define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE cpu_to_le32(0x00000000)
+#define SMB2_COMPRESSION_CAPABILITIES_FLAG_CHAINED cpu_to_le32(0x00000001)
struct smb2_compression_capabilities_context {
__le16 ContextType; /* 3 */
@@ -321,7 +393,7 @@
__u32 Reserved;
__le16 CompressionAlgorithmCount;
__u16 Padding;
- __u32 Reserved1;
+ __u32 Flags;
__le16 CompressionAlgorithms[3];
} __packed;
@@ -330,10 +402,42 @@
* Its struct simply contains NetName, an array of Unicode characters
*/
struct smb2_netname_neg_context {
- __le16 ContextType; /* 0x100 */
+ __le16 ContextType; /* 5 */
__le16 DataLength;
__le32 Reserved;
- __le16 NetName[0]; /* hostname of target converted to UCS-2 */
+ __le16 NetName[]; /* hostname of target converted to UCS-2 */
+} __packed;
+
+/*
+ * For rdma transform capabilities context see MS-SMB2 2.2.3.1.6
+ * and 2.2.4.1.5
+ */
+
+/* RDMA Transform IDs */
+#define SMB2_RDMA_TRANSFORM_NONE 0x0000
+#define SMB2_RDMA_TRANSFORM_ENCRYPTION 0x0001
+
+struct smb2_rdma_transform_capabilities_context {
+ __le16 ContextType; /* 7 */
+ __le16 DataLength;
+ __u32 Reserved;
+ __le16 TransformCount;
+ __u16 Reserved1;
+ __u32 Reserved2;
+ __le16 RDMATransformIds[1];
+} __packed;
+
+/* Signing algorithms */
+#define SIGNING_ALG_HMAC_SHA256 0
+#define SIGNING_ALG_AES_CMAC 1
+#define SIGNING_ALG_AES_GMAC 2
+
+struct smb2_signing_capabilities {
+ __le16 ContextType; /* 8 */
+ __le16 DataLength;
+ __u32 Reserved;
+ __le16 SigningAlgorithmCount;
+ __le16 SigningAlgorithms[];
} __packed;
#define POSIX_CTXT_DATA_LEN 16
@@ -413,7 +517,7 @@
struct smb2_tree_connect_req {
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 9 */
- __le16 Reserved; /* Flags in SMB3.1.1 */
+ __le16 Flags; /* Reserved MBZ for dialects prior to SMB3.1.1 */
__le16 PathOffset;
__le16 PathLength;
__u8 Buffer[1]; /* variable length */
@@ -428,13 +532,13 @@
__le16 ContextType;
__le16 DataLength;
__le32 Reserved;
- __u8 Data[0];
+ __u8 Data[];
} __packed;
/* Remoted identity tree connect context structures - see MS-SMB2 2.2.9.2.1 */
struct smb3_blob_data {
__le16 BlobSize;
- __u8 BlobData[0];
+ __u8 BlobData[];
} __packed;
/* Valid values for Attr */
@@ -484,14 +588,14 @@
__le16 DeviceGroups; /* offset to SID_ARRAY_DATA struct */
__le16 UserClaims; /* offset to BLOB_DATA struct */
__le16 DeviceClaims; /* offset to BLOB_DATA struct */
- __u8 TicketInfo[0]; /* variable length buf - remoted identity data */
+ __u8 TicketInfo[]; /* variable length buf - remoted identity data */
} __packed;
struct smb2_tree_connect_req_extension {
__le32 TreeConnectContextOffset;
__le16 TreeConnectContextCount;
__u8 Reserved[10];
- __u8 PathName[0]; /* variable sized array */
+ __u8 PathName[]; /* variable sized array */
/* followed by array of TreeConnectContexts */
} __packed;
@@ -640,7 +744,7 @@
| FILE_WRITE_EA_LE | FILE_WRITE_ATTRIBUTES_LE)
#define FILE_EXEC_RIGHTS_LE (FILE_EXECUTE_LE)
-/* Impersonation Levels */
+/* Impersonation Levels. See MS-WPO section 9.7 and MSDN-IMPERS */
#define IL_ANONYMOUS cpu_to_le32(0x00000000)
#define IL_IDENTIFICATION cpu_to_le32(0x00000001)
#define IL_IMPERSONATION cpu_to_le32(0x00000002)
@@ -696,7 +800,7 @@
__le16 NameLength;
__le32 CreateContextsOffset;
__le32 CreateContextsLength;
- __u8 Buffer[0];
+ __u8 Buffer[];
} __packed;
/*
@@ -734,7 +838,7 @@
__le16 Reserved;
__le16 DataOffset;
__le32 DataLength;
- __u8 Buffer[0];
+ __u8 Buffer[];
} __packed;
#define SMB2_LEASE_READ_CACHING_HE 0x01
@@ -746,7 +850,7 @@
#define SMB2_LEASE_HANDLE_CACHING cpu_to_le32(0x02)
#define SMB2_LEASE_WRITE_CACHING cpu_to_le32(0x04)
-#define SMB2_LEASE_FLAG_BREAK_IN_PROGRESS cpu_to_le32(0x02)
+#define SMB2_LEASE_FLAG_BREAK_IN_PROGRESS cpu_to_le32(0x00000002)
#define SMB2_LEASE_FLAG_PARENT_LEASE_KEY_SET cpu_to_le32(0x00000004)
#define SMB2_LEASE_KEY_SIZE 16
@@ -863,11 +967,18 @@
__u8 Name[8];
} __packed;
+struct crt_sd_ctxt {
+ struct create_context ccontext;
+ __u8 Name[8];
+ struct smb3_sd sd;
+} __packed;
+
+
#define COPY_CHUNK_RES_KEY_SIZE 24
struct resume_key_req {
char ResumeKey[COPY_CHUNK_RES_KEY_SIZE];
__le32 ContextLength; /* MBZ */
- char Context[0]; /* ignored, Windows sets to 4 bytes of zero */
+ char Context[]; /* ignored, Windows sets to 4 bytes of zero */
} __packed;
/* this goes in the ioctl buffer when doing a copychunk request */
@@ -894,6 +1005,31 @@
__le32 TotalBytesWritten;
} __packed;
+/* See MS-FSCC 2.3.29 and 2.3.30 */
+struct get_retrieval_pointer_count_req {
+ __le64 StartingVcn; /* virtual cluster number (signed) */
+} __packed;
+
+struct get_retrieval_pointer_count_rsp {
+ __le32 ExtentCount;
+} __packed;
+
+/*
+ * See MS-FSCC 2.3.33 and 2.3.34
+ * request is the same as get_retrieval_point_count_req struct above
+ */
+struct smb3_extents {
+ __le64 NextVcn;
+ __le64 Lcn; /* logical cluster number */
+} __packed;
+
+struct get_retrieval_pointers_refcount_rsp {
+ __le32 ExtentCount;
+ __u32 Reserved;
+ __le64 StartingVcn;
+ struct smb3_extents extents[];
+} __packed;
+
struct fsctl_set_integrity_information_req {
__le16 ChecksumAlgorithm;
__le16 Reserved;
@@ -929,7 +1065,7 @@
__le32 ReparseTag;
__le16 ReparseDataLength;
__u16 Reserved;
- __u8 DataBuffer[0]; /* Variable Length */
+ __u8 DataBuffer[]; /* Variable Length */
} __packed;
struct reparse_guid_data_buffer {
@@ -937,7 +1073,7 @@
__le16 ReparseDataLength;
__u16 Reserved;
__u8 ReparseGuid[16];
- __u8 DataBuffer[0]; /* Variable Length */
+ __u8 DataBuffer[]; /* Variable Length */
} __packed;
struct reparse_mount_point_data_buffer {
@@ -948,7 +1084,7 @@
__le16 SubstituteNameLength;
__le16 PrintNameOffset;
__le16 PrintNameLength;
- __u8 PathBuffer[0]; /* Variable Length */
+ __u8 PathBuffer[]; /* Variable Length */
} __packed;
#define SYMLINK_FLAG_RELATIVE 0x00000001
@@ -962,7 +1098,7 @@
__le16 PrintNameOffset;
__le16 PrintNameLength;
__le32 Flags;
- __u8 PathBuffer[0]; /* Variable Length */
+ __u8 PathBuffer[]; /* Variable Length */
} __packed;
/* See MS-FSCC 2.1.2.6 and cifspdu.h for struct reparse_posix_data */
@@ -1064,7 +1200,7 @@
__le32 MaxOutputResponse;
__le32 Flags;
__u32 Reserved2;
- __u8 Buffer[0];
+ __u8 Buffer[];
} __packed;
struct smb2_ioctl_rsp {
@@ -1136,6 +1272,7 @@
#define SMB2_CHANNEL_NONE cpu_to_le32(0x00000000)
#define SMB2_CHANNEL_RDMA_V1 cpu_to_le32(0x00000001) /* SMB3 or later */
#define SMB2_CHANNEL_RDMA_V1_INVALIDATE cpu_to_le32(0x00000002) /* >= SMB3.02 */
+#define SMB2_CHANNEL_RDMA_TRANSFORM cpu_to_le32(0x00000003) /* >= SMB3.02, only used on write */
/* SMB2 read request without RFC1001 length at the beginning */
struct smb2_read_plain_req {
@@ -1155,6 +1292,10 @@
__u8 Buffer[1];
} __packed;
+/* Read flags */
+#define SMB2_READFLAG_RESPONSE_NONE 0x00000000
+#define SMB2_READFLAG_RESPONSE_RDMA_TRANSFORM 0x00000001
+
struct smb2_read_rsp {
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 17 */
@@ -1162,7 +1303,7 @@
__u8 Reserved;
__le32 DataLength;
__le32 DataRemaining;
- __u32 Reserved2;
+ __u32 Flags;
__u8 Buffer[1];
} __packed;
@@ -1178,7 +1319,7 @@
__le64 Offset;
__u64 PersistentFileId; /* opaque endianness */
__u64 VolatileFileId; /* opaque endianness */
- __le32 Channel; /* Reserved MBZ */
+ __le32 Channel; /* MBZ unless SMB3.02 or later */
__le32 RemainingBytes;
__le16 WriteChannelInfoOffset;
__le16 WriteChannelInfoLength;
@@ -1280,6 +1421,8 @@
#define SMB2_INDEX_SPECIFIED 0x04
#define SMB2_REOPEN 0x10
+#define SMB2_QUERY_DIRECTORY_IOV_SIZE 2
+
struct smb2_query_directory_req {
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 33 */
@@ -1465,7 +1608,7 @@
__le32 VolumeLabelLength; /* includes trailing null */
__u8 SupportsObjects; /* True if eg like NTFS, supports objects */
__u8 Reserved;
- __u8 VolumeLabel[0]; /* variable len */
+ __u8 VolumeLabel[]; /* variable len */
} __packed;
/* partial list of QUERY INFO levels */
@@ -1515,6 +1658,7 @@
#define FILE_NORMALIZED_NAME_INFORMATION 48
#define FILEID_GLOBAL_TX_DIRECTORY_INFORMATION 50
#define FILE_STANDARD_LINK_INFORMATION 54
+#define FILE_ID_INFORMATION 59
struct smb2_file_internal_info {
__le64 IndexNumber;
@@ -1526,7 +1670,8 @@
__u8 Reserved[7];
__u64 RootDirectory; /* MBZ for network operations (why says spec?) */
__le32 FileNameLength;
- char FileName[0]; /* New name to be assigned */
+ char FileName[]; /* New name to be assigned */
+ /* padding - overall struct size must be >= 24 so filename + pad >= 6 */
} __packed; /* level 10 Set */
struct smb2_file_link_info { /* encoding of request for level 11 */
@@ -1535,7 +1680,7 @@
__u8 Reserved[7];
__u64 RootDirectory; /* MBZ for network operations (why says spec?) */
__le32 FileNameLength;
- char FileName[0]; /* Name to be assigned to new link */
+ char FileName[]; /* Name to be assigned to new link */
} __packed; /* level 11 Set */
struct smb2_file_full_ea_info { /* encoding of response for level 15 */
@@ -1543,7 +1688,7 @@
__u8 flags;
__u8 ea_name_length;
__le16 ea_value_length;
- char ea_data[0]; /* \0 terminated name plus value */
+ char ea_data[]; /* \0 terminated name plus value */
} __packed; /* level 15 Set */
/*
@@ -1578,6 +1723,107 @@
__le64 EndOfFile; /* new end of file value */
} __packed; /* level 20 Set */
+struct smb2_file_reparse_point_info {
+ __le64 IndexNumber;
+ __le32 Tag;
+} __packed;
+
+struct smb2_file_network_open_info {
+ __le64 CreationTime;
+ __le64 LastAccessTime;
+ __le64 LastWriteTime;
+ __le64 ChangeTime;
+ __le64 AllocationSize;
+ __le64 EndOfFile;
+ __le32 Attributes;
+ __le32 Reserved;
+} __packed; /* level 34 Query also similar returned in close rsp and open rsp */
+
+/* See MS-FSCC 2.4.43 */
+struct smb2_file_id_information {
+ __le64 VolumeSerialNumber;
+ __u64 PersistentFileId; /* opaque endianness */
+ __u64 VolatileFileId; /* opaque endianness */
+} __packed; /* level 59 */
+
extern char smb2_padding[7];
+/* equivalent of the contents of SMB3.1.1 POSIX open context response */
+struct create_posix_rsp {
+ u32 nlink;
+ u32 reparse_tag;
+ u32 mode;
+ struct cifs_sid owner; /* var-sized on the wire */
+ struct cifs_sid group; /* var-sized on the wire */
+} __packed;
+
+/*
+ * SMB2-only POSIX info level for query dir
+ *
+ * See posix_info_sid_size(), posix_info_extra_size() and
+ * posix_info_parse() to help with the handling of this struct.
+ */
+struct smb2_posix_info {
+ __le32 NextEntryOffset;
+ __u32 Ignored;
+ __le64 CreationTime;
+ __le64 LastAccessTime;
+ __le64 LastWriteTime;
+ __le64 ChangeTime;
+ __le64 EndOfFile;
+ __le64 AllocationSize;
+ __le32 DosAttributes;
+ __le64 Inode;
+ __le32 DeviceId;
+ __le32 Zero;
+ /* beginning of POSIX Create Context Response */
+ __le32 HardLinks;
+ __le32 ReparseTag;
+ __le32 Mode;
+ /*
+ * var sized owner SID
+ * var sized group SID
+ * le32 filenamelength
+ * u8 filename[]
+ */
+} __packed;
+
+/* Level 100 query info */
+struct smb311_posix_qinfo {
+ __le64 CreationTime;
+ __le64 LastAccessTime;
+ __le64 LastWriteTime;
+ __le64 ChangeTime;
+ __le64 EndOfFile;
+ __le64 AllocationSize;
+ __le32 DosAttributes;
+ __le64 Inode;
+ __le32 DeviceId;
+ __le32 Zero;
+ /* beginning of POSIX Create Context Response */
+ __le32 HardLinks;
+ __le32 ReparseTag;
+ __le32 Mode;
+ u8 Sids[];
+ /*
+ * var sized owner SID
+ * var sized group SID
+ * le32 filenamelength
+ * u8 filename[]
+ */
+} __packed;
+
+/*
+ * Parsed version of the above struct. Allows direct access to the
+ * variable length fields
+ */
+struct smb2_posix_info_parsed {
+ const struct smb2_posix_info *base;
+ size_t size;
+ struct cifs_sid owner;
+ struct cifs_sid group;
+ int name_len;
+ const u8 *name;
+};
+
#endif /* _SMB2PDU_H */
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 57f7075..4eb0ca8 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -46,7 +46,8 @@
extern int smb2_check_receive(struct mid_q_entry *mid,
struct TCP_Server_Info *server, bool log_error);
extern struct mid_q_entry *smb2_setup_request(struct cifs_ses *ses,
- struct smb_rqst *rqst);
+ struct TCP_Server_Info *,
+ struct smb_rqst *rqst);
extern struct mid_q_entry *smb2_setup_async_request(
struct TCP_Server_Info *server, struct smb_rqst *rqst);
extern struct cifs_ses *smb2_find_smb_ses(struct TCP_Server_Info *server,
@@ -54,9 +55,11 @@
extern struct cifs_tcon *smb2_find_smb_tcon(struct TCP_Server_Info *server,
__u64 ses_id, __u32 tid);
extern int smb2_calc_signature(struct smb_rqst *rqst,
- struct TCP_Server_Info *server);
+ struct TCP_Server_Info *server,
+ bool allocate_crypto);
extern int smb3_calc_signature(struct smb_rqst *rqst,
- struct TCP_Server_Info *server);
+ struct TCP_Server_Info *server,
+ bool allocate_crypto);
extern void smb2_echo_request(struct work_struct *work);
extern __le32 smb2_get_lease_state(struct cifsInodeInfo *cinode);
extern bool smb2_is_valid_oplock_break(char *buffer,
@@ -67,10 +70,16 @@
struct mid_q_entry *mid);
extern int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
- struct cifs_fid *pfid);
+ struct cifs_sb_info *cifs_sb,
+ struct cached_fid **cfid);
extern void close_shroot(struct cached_fid *cfid);
+extern void close_shroot_lease(struct cached_fid *cfid);
+extern void close_shroot_lease_locked(struct cached_fid *cfid);
extern void move_smb2_info_to_cifs(FILE_ALL_INFO *dst,
struct smb2_file_all_info *src);
+extern int smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *path,
+ __u32 *reparse_tag);
extern int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const char *full_path, FILE_ALL_INFO *data,
@@ -136,8 +145,11 @@
extern int SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms,
__le16 *path, __u8 *oplock,
struct smb2_file_all_info *buf,
+ struct create_posix_rsp *posix,
struct kvec *err_iov, int *resp_buftype);
-extern int SMB2_open_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
+extern int SMB2_open_init(struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
__u8 *oplock, struct cifs_open_parms *oparms,
__le16 *path);
extern void SMB2_open_free(struct smb_rqst *rqst);
@@ -145,7 +157,9 @@
u64 persistent_fid, u64 volatile_fid, u32 opcode,
bool is_fsctl, char *in_data, u32 indatalen, u32 maxoutlen,
char **out_data, u32 *plen /* returned data len */);
-extern int SMB2_ioctl_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
+extern int SMB2_ioctl_init(struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid, u32 opcode,
bool is_fsctl, char *in_data, u32 indatalen,
__u32 max_response_size);
@@ -154,21 +168,32 @@
u64 persistent_fid, u64 volatile_fid, bool watch_tree,
u32 completion_filter);
+extern int __SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid,
+ struct smb2_file_network_open_info *pbuf);
extern int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id);
-extern int SMB2_close_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
- u64 persistent_file_id, u64 volatile_file_id);
+extern int SMB2_close_init(struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
+ u64 persistent_fid, u64 volatile_fid,
+ bool query_attrs);
extern void SMB2_close_free(struct smb_rqst *rqst);
extern int SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id);
extern int SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst,
struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
u64 persistent_file_id, u64 volatile_file_id);
extern void SMB2_flush_free(struct smb_rqst *rqst);
+extern int SMB311_posix_query_info(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid, struct smb311_posix_qinfo *data, u32 *plen);
extern int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id,
struct smb2_file_all_info *data);
-extern int SMB2_query_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
+extern int SMB2_query_info_init(struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid,
u8 info_class, u8 info_type,
u32 additional_info, size_t output_len,
@@ -191,10 +216,18 @@
extern int SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, int index,
struct cifs_search_info *srch_inf);
+extern int SMB2_query_directory_init(unsigned int xid, struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
+ u64 persistent_fid, u64 volatile_fid,
+ int index, int info_level);
+extern void SMB2_query_directory_free(struct smb_rqst *rqst);
extern int SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, u32 pid,
__le64 *eof);
-extern int SMB2_set_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
+extern int SMB2_set_info_init(struct cifs_tcon *tcon,
+ struct TCP_Server_Info *server,
+ struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid, u32 pid,
u8 info_class, u8 info_type, u32 additional_info,
void **data, unsigned int *size);
@@ -213,8 +246,7 @@
extern int smb2_handle_cancelled_close(struct cifs_tcon *tcon,
__u64 persistent_fid,
__u64 volatile_fid);
-extern int smb2_handle_cancelled_mid(char *buffer,
- struct TCP_Server_Info *server);
+extern int smb2_handle_cancelled_mid(struct mid_q_entry *mid, struct TCP_Server_Info *server);
void smb2_cancelled_close_fid(struct work_struct *work);
extern int SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id,
@@ -241,7 +273,8 @@
extern void smb2_parse_contexts(struct TCP_Server_Info *server,
struct smb2_create_rsp *rsp,
unsigned int *epoch, char *lease_key,
- __u8 *oplock, struct smb2_file_all_info *buf);
+ __u8 *oplock, struct smb2_file_all_info *buf,
+ struct create_posix_rsp *posix);
extern int smb3_encryption_required(const struct cifs_tcon *tcon);
extern int smb2_validate_iov(unsigned int offset, unsigned int buffer_length,
struct kvec *iov, unsigned int min_buf_size);
@@ -261,4 +294,11 @@
u32 class, u32 type, u32 output_len,
struct kvec *rsp, int *buftype,
struct cifs_sb_info *cifs_sb);
+/* query path info from the server using SMB311 POSIX extensions*/
+extern int smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *sb, const char *path, struct smb311_posix_qinfo *qinf,
+ bool *adjust_tx, bool *symlink);
+int posix_info_parse(const void *beg, const void *end,
+ struct smb2_posix_info_parsed *out);
+int posix_info_sid_size(const void *beg, const void *end);
#endif /* _SMB2PROTO_H */
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index 8056529..e6fa76a 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -41,14 +41,6 @@
#include "smb2glob.h"
static int
-smb2_crypto_shash_allocate(struct TCP_Server_Info *server)
-{
- return cifs_alloc_hash("hmac(sha256)",
- &server->secmech.hmacsha256,
- &server->secmech.sdeschmacsha256);
-}
-
-static int
smb3_crypto_shash_allocate(struct TCP_Server_Info *server)
{
struct cifs_secmech *p = &server->secmech;
@@ -98,6 +90,62 @@
return rc;
}
+
+static
+int smb2_get_sign_key(__u64 ses_id, struct TCP_Server_Info *server, u8 *key)
+{
+ struct cifs_chan *chan;
+ struct cifs_ses *ses = NULL;
+ struct TCP_Server_Info *it = NULL;
+ int i;
+ int rc = 0;
+
+ spin_lock(&cifs_tcp_ses_lock);
+
+ list_for_each_entry(it, &cifs_tcp_ses_list, tcp_ses_list) {
+ list_for_each_entry(ses, &it->smb_ses_list, smb_ses_list) {
+ if (ses->Suid == ses_id)
+ goto found;
+ }
+ }
+ cifs_server_dbg(VFS, "%s: Could not find session 0x%llx\n",
+ __func__, ses_id);
+ rc = -ENOENT;
+ goto out;
+
+found:
+ if (ses->binding) {
+ /*
+ * If we are in the process of binding a new channel
+ * to an existing session, use the master connection
+ * session key
+ */
+ memcpy(key, ses->smb3signingkey, SMB3_SIGN_KEY_SIZE);
+ goto out;
+ }
+
+ /*
+ * Otherwise, use the channel key.
+ */
+
+ for (i = 0; i < ses->chan_count; i++) {
+ chan = ses->chans + i;
+ if (chan->server == server) {
+ memcpy(key, chan->signkey, SMB3_SIGN_KEY_SIZE);
+ goto out;
+ }
+ }
+
+ cifs_dbg(VFS,
+ "%s: Could not find channel signing key for session 0x%llx\n",
+ __func__, ses_id);
+ rc = -ENOENT;
+
+out:
+ spin_unlock(&cifs_tcp_ses_lock);
+ return rc;
+}
+
static struct cifs_ses *
smb2_find_smb_ses_unlocked(struct TCP_Server_Info *server, __u64 ses_id)
{
@@ -163,7 +211,8 @@
}
int
-smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
+smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server,
+ bool allocate_crypto)
{
int rc;
unsigned char smb2_signature[SMB2_HMACSHA256_SIZE];
@@ -172,6 +221,8 @@
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)iov[0].iov_base;
struct cifs_ses *ses;
struct shash_desc *shash;
+ struct crypto_shash *hash;
+ struct sdesc *sdesc = NULL;
struct smb_rqst drqst;
ses = smb2_find_smb_ses(server, shdr->SessionId);
@@ -183,24 +234,32 @@
memset(smb2_signature, 0x0, SMB2_HMACSHA256_SIZE);
memset(shdr->Signature, 0x0, SMB2_SIGNATURE_SIZE);
- rc = smb2_crypto_shash_allocate(server);
- if (rc) {
- cifs_server_dbg(VFS, "%s: sha256 alloc failed\n", __func__);
- return rc;
+ if (allocate_crypto) {
+ rc = cifs_alloc_hash("hmac(sha256)", &hash, &sdesc);
+ if (rc) {
+ cifs_server_dbg(VFS,
+ "%s: sha256 alloc failed\n", __func__);
+ return rc;
+ }
+ shash = &sdesc->shash;
+ } else {
+ hash = server->secmech.hmacsha256;
+ shash = &server->secmech.sdeschmacsha256->shash;
}
- rc = crypto_shash_setkey(server->secmech.hmacsha256,
- ses->auth_key.response, SMB2_NTLMV2_SESSKEY_SIZE);
+ rc = crypto_shash_setkey(hash, ses->auth_key.response,
+ SMB2_NTLMV2_SESSKEY_SIZE);
if (rc) {
- cifs_server_dbg(VFS, "%s: Could not update with response\n", __func__);
- return rc;
+ cifs_server_dbg(VFS,
+ "%s: Could not update with response\n",
+ __func__);
+ goto out;
}
- shash = &server->secmech.sdeschmacsha256->shash;
rc = crypto_shash_init(shash);
if (rc) {
cifs_server_dbg(VFS, "%s: Could not init sha256", __func__);
- return rc;
+ goto out;
}
/*
@@ -215,9 +274,10 @@
rc = crypto_shash_update(shash, iov[0].iov_base,
iov[0].iov_len);
if (rc) {
- cifs_server_dbg(VFS, "%s: Could not update with payload\n",
- __func__);
- return rc;
+ cifs_server_dbg(VFS,
+ "%s: Could not update with payload\n",
+ __func__);
+ goto out;
}
drqst.rq_iov++;
drqst.rq_nvec--;
@@ -227,6 +287,9 @@
if (!rc)
memcpy(shdr->Signature, sigptr, SMB2_SIGNATURE_SIZE);
+out:
+ if (allocate_crypto)
+ cifs_free_hash(&hash, &sdesc);
return rc;
}
@@ -235,7 +298,8 @@
{
unsigned char zero = 0x0;
__u8 i[4] = {0, 0, 0, 1};
- __u8 L[4] = {0, 0, 0, 128};
+ __u8 L128[4] = {0, 0, 0, 128};
+ __u8 L256[4] = {0, 0, 1, 0};
int rc = 0;
unsigned char prfhash[SMB2_HMACSHA256_SIZE];
unsigned char *hashptr = prfhash;
@@ -291,8 +355,14 @@
goto smb3signkey_ret;
}
- rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash,
- L, 4);
+ if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) ||
+ (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) {
+ rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash,
+ L256, 4);
+ } else {
+ rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash,
+ L128, 4);
+ }
if (rc) {
cifs_server_dbg(VFS, "%s: Could not update with L\n", __func__);
goto smb3signkey_ret;
@@ -327,22 +397,49 @@
const struct derivation_triplet *ptriplet)
{
int rc;
+#ifdef CONFIG_CIFS_DEBUG_DUMP_KEYS
+ struct TCP_Server_Info *server = ses->server;
+#endif
- rc = generate_key(ses, ptriplet->signing.label,
- ptriplet->signing.context, ses->smb3signingkey,
- SMB3_SIGN_KEY_SIZE);
- if (rc)
- return rc;
+ /*
+ * All channels use the same encryption/decryption keys but
+ * they have their own signing key.
+ *
+ * When we generate the keys, check if it is for a new channel
+ * (binding) in which case we only need to generate a signing
+ * key and store it in the channel as to not overwrite the
+ * master connection signing key stored in the session
+ */
- rc = generate_key(ses, ptriplet->encryption.label,
- ptriplet->encryption.context, ses->smb3encryptionkey,
- SMB3_SIGN_KEY_SIZE);
- if (rc)
- return rc;
+ if (ses->binding) {
+ rc = generate_key(ses, ptriplet->signing.label,
+ ptriplet->signing.context,
+ cifs_ses_binding_channel(ses)->signkey,
+ SMB3_SIGN_KEY_SIZE);
+ if (rc)
+ return rc;
+ } else {
+ rc = generate_key(ses, ptriplet->signing.label,
+ ptriplet->signing.context,
+ ses->smb3signingkey,
+ SMB3_SIGN_KEY_SIZE);
+ if (rc)
+ return rc;
- rc = generate_key(ses, ptriplet->decryption.label,
- ptriplet->decryption.context,
- ses->smb3decryptionkey, SMB3_SIGN_KEY_SIZE);
+ memcpy(ses->chans[0].signkey, ses->smb3signingkey,
+ SMB3_SIGN_KEY_SIZE);
+
+ rc = generate_key(ses, ptriplet->encryption.label,
+ ptriplet->encryption.context,
+ ses->smb3encryptionkey,
+ SMB3_ENC_DEC_KEY_SIZE);
+ rc = generate_key(ses, ptriplet->decryption.label,
+ ptriplet->decryption.context,
+ ses->smb3decryptionkey,
+ SMB3_ENC_DEC_KEY_SIZE);
+ if (rc)
+ return rc;
+ }
if (rc)
return rc;
@@ -355,14 +452,23 @@
*/
cifs_dbg(VFS, "Session Id %*ph\n", (int)sizeof(ses->Suid),
&ses->Suid);
+ cifs_dbg(VFS, "Cipher type %d\n", server->cipher_type);
cifs_dbg(VFS, "Session Key %*ph\n",
SMB2_NTLMV2_SESSKEY_SIZE, ses->auth_key.response);
cifs_dbg(VFS, "Signing Key %*ph\n",
SMB3_SIGN_KEY_SIZE, ses->smb3signingkey);
- cifs_dbg(VFS, "ServerIn Key %*ph\n",
- SMB3_SIGN_KEY_SIZE, ses->smb3encryptionkey);
- cifs_dbg(VFS, "ServerOut Key %*ph\n",
- SMB3_SIGN_KEY_SIZE, ses->smb3decryptionkey);
+ if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) ||
+ (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) {
+ cifs_dbg(VFS, "ServerIn Key %*ph\n",
+ SMB3_GCM256_CRYPTKEY_SIZE, ses->smb3encryptionkey);
+ cifs_dbg(VFS, "ServerOut Key %*ph\n",
+ SMB3_GCM256_CRYPTKEY_SIZE, ses->smb3decryptionkey);
+ } else {
+ cifs_dbg(VFS, "ServerIn Key %*ph\n",
+ SMB3_GCM128_CRYPTKEY_SIZE, ses->smb3encryptionkey);
+ cifs_dbg(VFS, "ServerOut Key %*ph\n",
+ SMB3_GCM128_CRYPTKEY_SIZE, ses->smb3decryptionkey);
+ }
#endif
return rc;
}
@@ -424,31 +530,42 @@
}
int
-smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
+smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server,
+ bool allocate_crypto)
{
int rc;
unsigned char smb3_signature[SMB2_CMACAES_SIZE];
unsigned char *sigptr = smb3_signature;
struct kvec *iov = rqst->rq_iov;
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)iov[0].iov_base;
- struct cifs_ses *ses;
- struct shash_desc *shash = &server->secmech.sdesccmacaes->shash;
+ struct shash_desc *shash;
+ struct crypto_shash *hash;
+ struct sdesc *sdesc = NULL;
struct smb_rqst drqst;
+ u8 key[SMB3_SIGN_KEY_SIZE];
- ses = smb2_find_smb_ses(server, shdr->SessionId);
- if (!ses) {
- cifs_server_dbg(VFS, "%s: Could not find session\n", __func__);
+ rc = smb2_get_sign_key(shdr->SessionId, server, key);
+ if (rc)
return 0;
+
+ if (allocate_crypto) {
+ rc = cifs_alloc_hash("cmac(aes)", &hash, &sdesc);
+ if (rc)
+ return rc;
+
+ shash = &sdesc->shash;
+ } else {
+ hash = server->secmech.cmacaes;
+ shash = &server->secmech.sdesccmacaes->shash;
}
memset(smb3_signature, 0x0, SMB2_CMACAES_SIZE);
memset(shdr->Signature, 0x0, SMB2_SIGNATURE_SIZE);
- rc = crypto_shash_setkey(server->secmech.cmacaes,
- ses->smb3signingkey, SMB2_CMACAES_SIZE);
+ rc = crypto_shash_setkey(hash, key, SMB2_CMACAES_SIZE);
if (rc) {
cifs_server_dbg(VFS, "%s: Could not set key for cmac aes\n", __func__);
- return rc;
+ goto out;
}
/*
@@ -459,7 +576,7 @@
rc = crypto_shash_init(shash);
if (rc) {
cifs_server_dbg(VFS, "%s: Could not init cmac aes\n", __func__);
- return rc;
+ goto out;
}
/*
@@ -476,7 +593,7 @@
if (rc) {
cifs_server_dbg(VFS, "%s: Could not update with payload\n",
__func__);
- return rc;
+ goto out;
}
drqst.rq_iov++;
drqst.rq_nvec--;
@@ -486,6 +603,9 @@
if (!rc)
memcpy(shdr->Signature, sigptr, SMB2_SIGNATURE_SIZE);
+out:
+ if (allocate_crypto)
+ cifs_free_hash(&hash, &sdesc);
return rc;
}
@@ -494,19 +614,28 @@
smb2_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
int rc = 0;
- struct smb2_sync_hdr *shdr =
- (struct smb2_sync_hdr *)rqst->rq_iov[0].iov_base;
+ struct smb2_sync_hdr *shdr;
+ struct smb2_sess_setup_req *ssr;
+ bool is_binding;
+ bool is_signed;
- if (!(shdr->Flags & SMB2_FLAGS_SIGNED) ||
- server->tcpStatus == CifsNeedNegotiate)
- return rc;
+ shdr = (struct smb2_sync_hdr *)rqst->rq_iov[0].iov_base;
+ ssr = (struct smb2_sess_setup_req *)shdr;
- if (!server->session_estab) {
+ is_binding = shdr->Command == SMB2_SESSION_SETUP &&
+ (ssr->Flags & SMB2_SESSION_REQ_FLAG_BINDING);
+ is_signed = shdr->Flags & SMB2_FLAGS_SIGNED;
+
+ if (!is_signed)
+ return 0;
+ if (server->tcpStatus == CifsNeedNegotiate)
+ return 0;
+ if (!is_binding && !server->session_estab) {
strncpy(shdr->Signature, "BSRSPYL", 8);
- return rc;
+ return 0;
}
- rc = server->ops->calc_signature(rqst, server);
+ rc = server->ops->calc_signature(rqst, server, false);
return rc;
}
@@ -515,7 +644,7 @@
smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
{
unsigned int rc;
- char server_response_sig[16];
+ char server_response_sig[SMB2_SIGNATURE_SIZE];
struct smb2_sync_hdr *shdr =
(struct smb2_sync_hdr *)rqst->rq_iov[0].iov_base;
@@ -544,16 +673,16 @@
memset(shdr->Signature, 0, SMB2_SIGNATURE_SIZE);
- mutex_lock(&server->srv_mutex);
- rc = server->ops->calc_signature(rqst, server);
- mutex_unlock(&server->srv_mutex);
+ rc = server->ops->calc_signature(rqst, server, true);
if (rc)
return rc;
- if (memcmp(server_response_sig, shdr->Signature, SMB2_SIGNATURE_SIZE))
+ if (memcmp(server_response_sig, shdr->Signature, SMB2_SIGNATURE_SIZE)) {
+ cifs_dbg(VFS, "sign fail cmd 0x%x message id 0x%llx\n",
+ shdr->Command, shdr->MessageId);
return -EACCES;
- else
+ } else
return 0;
}
@@ -612,18 +741,18 @@
}
static int
-smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_sync_hdr *shdr,
- struct mid_q_entry **mid)
+smb2_get_mid_entry(struct cifs_ses *ses, struct TCP_Server_Info *server,
+ struct smb2_sync_hdr *shdr, struct mid_q_entry **mid)
{
- if (ses->server->tcpStatus == CifsExiting)
+ if (server->tcpStatus == CifsExiting)
return -ENOENT;
- if (ses->server->tcpStatus == CifsNeedReconnect) {
+ if (server->tcpStatus == CifsNeedReconnect) {
cifs_dbg(FYI, "tcp session dead - return to caller to retry\n");
return -EAGAIN;
}
- if (ses->server->tcpStatus == CifsNeedNegotiate &&
+ if (server->tcpStatus == CifsNeedNegotiate &&
shdr->Command != SMB2_NEGOTIATE)
return -EAGAIN;
@@ -640,11 +769,11 @@
/* else ok - we are shutting down the session */
}
- *mid = smb2_mid_entry_alloc(shdr, ses->server);
+ *mid = smb2_mid_entry_alloc(shdr, server);
if (*mid == NULL)
return -ENOMEM;
spin_lock(&GlobalMid_Lock);
- list_add_tail(&(*mid)->qhead, &ses->server->pending_mid_q);
+ list_add_tail(&(*mid)->qhead, &server->pending_mid_q);
spin_unlock(&GlobalMid_Lock);
return 0;
@@ -677,24 +806,25 @@
}
struct mid_q_entry *
-smb2_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
+smb2_setup_request(struct cifs_ses *ses, struct TCP_Server_Info *server,
+ struct smb_rqst *rqst)
{
int rc;
struct smb2_sync_hdr *shdr =
(struct smb2_sync_hdr *)rqst->rq_iov[0].iov_base;
struct mid_q_entry *mid;
- smb2_seq_num_into_buf(ses->server, shdr);
+ smb2_seq_num_into_buf(server, shdr);
- rc = smb2_get_mid_entry(ses, shdr, &mid);
+ rc = smb2_get_mid_entry(ses, server, shdr, &mid);
if (rc) {
- revert_current_mid_from_hdr(ses->server, shdr);
+ revert_current_mid_from_hdr(server, shdr);
return ERR_PTR(rc);
}
- rc = smb2_sign_rqst(rqst, ses->server);
+ rc = smb2_sign_rqst(rqst, server);
if (rc) {
- revert_current_mid_from_hdr(ses->server, shdr);
+ revert_current_mid_from_hdr(server, shdr);
cifs_delete_mid(mid);
return ERR_PTR(rc);
}
@@ -738,12 +868,13 @@
struct crypto_aead *tfm;
if (!server->secmech.ccmaesencrypt) {
- if (server->cipher_type == SMB2_ENCRYPTION_AES128_GCM)
+ if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
+ (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
tfm = crypto_alloc_aead("gcm(aes)", 0, 0);
else
tfm = crypto_alloc_aead("ccm(aes)", 0, 0);
if (IS_ERR(tfm)) {
- cifs_server_dbg(VFS, "%s: Failed to alloc encrypt aead\n",
+ cifs_server_dbg(VFS, "%s: Failed alloc encrypt aead\n",
__func__);
return PTR_ERR(tfm);
}
@@ -751,7 +882,8 @@
}
if (!server->secmech.ccmaesdecrypt) {
- if (server->cipher_type == SMB2_ENCRYPTION_AES128_GCM)
+ if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
+ (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
tfm = crypto_alloc_aead("gcm(aes)", 0, 0);
else
tfm = crypto_alloc_aead("ccm(aes)", 0, 0);
diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
index 5b1b97e..b029ed3 100644
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -284,28 +284,22 @@
request->sge[i].length,
DMA_TO_DEVICE);
- if (request->has_payload) {
- if (atomic_dec_and_test(&request->info->send_payload_pending))
- wake_up(&request->info->wait_send_payload_pending);
- } else {
- if (atomic_dec_and_test(&request->info->send_pending))
- wake_up(&request->info->wait_send_pending);
- }
+ if (atomic_dec_and_test(&request->info->send_pending))
+ wake_up(&request->info->wait_send_pending);
+
+ wake_up(&request->info->wait_post_send);
mempool_free(request, request->info->request_mempool);
}
static void dump_smbd_negotiate_resp(struct smbd_negotiate_resp *resp)
{
- log_rdma_event(INFO, "resp message min_version %u max_version %u "
- "negotiated_version %u credits_requested %u "
- "credits_granted %u status %u max_readwrite_size %u "
- "preferred_send_size %u max_receive_size %u "
- "max_fragmented_size %u\n",
- resp->min_version, resp->max_version, resp->negotiated_version,
- resp->credits_requested, resp->credits_granted, resp->status,
- resp->max_readwrite_size, resp->preferred_send_size,
- resp->max_receive_size, resp->max_fragmented_size);
+ log_rdma_event(INFO, "resp message min_version %u max_version %u negotiated_version %u credits_requested %u credits_granted %u status %u max_readwrite_size %u preferred_send_size %u max_receive_size %u max_fragmented_size %u\n",
+ resp->min_version, resp->max_version,
+ resp->negotiated_version, resp->credits_requested,
+ resp->credits_granted, resp->status,
+ resp->max_readwrite_size, resp->preferred_send_size,
+ resp->max_receive_size, resp->max_fragmented_size);
}
/*
@@ -383,27 +377,6 @@
return true;
}
-/*
- * Check and schedule to send an immediate packet
- * This is used to extend credtis to remote peer to keep the transport busy
- */
-static void check_and_send_immediate(struct smbd_connection *info)
-{
- if (info->transport_status != SMBD_CONNECTED)
- return;
-
- info->send_immediate = true;
-
- /*
- * Promptly send a packet if our peer is running low on receive
- * credits
- */
- if (atomic_read(&info->receive_credits) <
- info->receive_credit_target - 1)
- queue_delayed_work(
- info->workqueue, &info->send_immediate_work, 0);
-}
-
static void smbd_post_send_credits(struct work_struct *work)
{
int ret = 0;
@@ -453,29 +426,16 @@
info->new_credits_offered += ret;
spin_unlock(&info->lock_new_credits_offered);
- atomic_add(ret, &info->receive_credits);
-
- /* Check if we can post new receive and grant credits to peer */
- check_and_send_immediate(info);
-}
-
-static void smbd_recv_done_work(struct work_struct *work)
-{
- struct smbd_connection *info =
- container_of(work, struct smbd_connection, recv_done_work);
-
- /*
- * We may have new send credits granted from remote peer
- * If any sender is blcoked on lack of credets, unblock it
- */
- if (atomic_read(&info->send_credits))
- wake_up_interruptible(&info->wait_send_queue);
-
- /*
- * Check if we need to send something to remote peer to
- * grant more credits or respond to KEEP_ALIVE packet
- */
- check_and_send_immediate(info);
+ /* Promptly send an immediate packet as defined in [MS-SMBD] 3.1.1.1 */
+ info->send_immediate = true;
+ if (atomic_read(&info->receive_credits) <
+ info->receive_credit_target - 1) {
+ if (info->keep_alive_requested == KEEP_ALIVE_PENDING ||
+ info->send_immediate) {
+ log_keep_alive(INFO, "send an empty message\n");
+ smbd_post_send_empty(info);
+ }
+ }
}
/* Called from softirq, when recv is done */
@@ -487,10 +447,9 @@
struct smbd_connection *info = response->info;
int data_length = 0;
- log_rdma_recv(INFO, "response=%p type=%d wc status=%d wc opcode %d "
- "byte_len=%d pkey_index=%x\n",
- response, response->type, wc->status, wc->opcode,
- wc->byte_len, wc->pkey_index);
+ log_rdma_recv(INFO, "response=%p type=%d wc status=%d wc opcode %d byte_len=%d pkey_index=%x\n",
+ response, response->type, wc->status, wc->opcode,
+ wc->byte_len, wc->pkey_index);
if (wc->status != IB_WC_SUCCESS || wc->opcode != IB_WC_RECV) {
log_rdma_recv(INFO, "wc->status=%d opcode=%d\n",
@@ -546,15 +505,21 @@
atomic_dec(&info->receive_credits);
info->receive_credit_target =
le16_to_cpu(data_transfer->credits_requested);
- atomic_add(le16_to_cpu(data_transfer->credits_granted),
- &info->send_credits);
+ if (le16_to_cpu(data_transfer->credits_granted)) {
+ atomic_add(le16_to_cpu(data_transfer->credits_granted),
+ &info->send_credits);
+ /*
+ * We have new send credits granted from remote peer
+ * If any sender is waiting for credits, unblock it
+ */
+ wake_up_interruptible(&info->wait_send_queue);
+ }
- log_incoming(INFO, "data flags %d data_offset %d "
- "data_length %d remaining_data_length %d\n",
- le16_to_cpu(data_transfer->flags),
- le32_to_cpu(data_transfer->data_offset),
- le32_to_cpu(data_transfer->data_length),
- le32_to_cpu(data_transfer->remaining_data_length));
+ log_incoming(INFO, "data flags %d data_offset %d data_length %d remaining_data_length %d\n",
+ le16_to_cpu(data_transfer->flags),
+ le32_to_cpu(data_transfer->data_offset),
+ le32_to_cpu(data_transfer->data_length),
+ le32_to_cpu(data_transfer->remaining_data_length));
/* Send a KEEP_ALIVE response right away if requested */
info->keep_alive_requested = KEEP_ALIVE_NONE;
@@ -563,7 +528,6 @@
info->keep_alive_requested = KEEP_ALIVE_PENDING;
}
- queue_work(info->workqueue, &info->recv_done_work);
return;
default:
@@ -663,14 +627,10 @@
}
if (!frwr_is_supported(&info->id->device->attrs)) {
- log_rdma_event(ERR,
- "Fast Registration Work Requests "
- "(FRWR) is not supported\n");
- log_rdma_event(ERR,
- "Device capability flags = %llx "
- "max_fast_reg_page_list_len = %u\n",
- info->id->device->attrs.device_cap_flags,
- info->id->device->attrs.max_fast_reg_page_list_len);
+ log_rdma_event(ERR, "Fast Registration Work Requests (FRWR) is not supported\n");
+ log_rdma_event(ERR, "Device capability flags = %llx max_fast_reg_page_list_len = %u\n",
+ info->id->device->attrs.device_cap_flags,
+ info->id->device->attrs.max_fast_reg_page_list_len);
rc = -EPROTONOSUPPORT;
goto out2;
}
@@ -756,7 +716,6 @@
request->sge[0].addr,
request->sge[0].length, request->sge[0].lkey);
- request->has_payload = false;
atomic_inc(&info->send_pending);
rc = ib_post_send(info->id->qp, &send_wr, NULL);
if (!rc)
@@ -813,120 +772,9 @@
return 0;
}
-/*
- * Build and prepare the SMBD packet header
- * This function waits for avaialbe send credits and build a SMBD packet
- * header. The caller then optional append payload to the packet after
- * the header
- * intput values
- * size: the size of the payload
- * remaining_data_length: remaining data to send if this is part of a
- * fragmented packet
- * output values
- * request_out: the request allocated from this function
- * return values: 0 on success, otherwise actual error code returned
- */
-static int smbd_create_header(struct smbd_connection *info,
- int size, int remaining_data_length,
- struct smbd_request **request_out)
-{
- struct smbd_request *request;
- struct smbd_data_transfer *packet;
- int header_length;
- int rc;
-
- /* Wait for send credits. A SMBD packet needs one credit */
- rc = wait_event_interruptible(info->wait_send_queue,
- atomic_read(&info->send_credits) > 0 ||
- info->transport_status != SMBD_CONNECTED);
- if (rc)
- return rc;
-
- if (info->transport_status != SMBD_CONNECTED) {
- log_outgoing(ERR, "disconnected not sending\n");
- return -EAGAIN;
- }
- atomic_dec(&info->send_credits);
-
- request = mempool_alloc(info->request_mempool, GFP_KERNEL);
- if (!request) {
- rc = -ENOMEM;
- goto err;
- }
-
- request->info = info;
-
- /* Fill in the packet header */
- packet = smbd_request_payload(request);
- packet->credits_requested = cpu_to_le16(info->send_credit_target);
- packet->credits_granted =
- cpu_to_le16(manage_credits_prior_sending(info));
- info->send_immediate = false;
-
- packet->flags = 0;
- if (manage_keep_alive_before_sending(info))
- packet->flags |= cpu_to_le16(SMB_DIRECT_RESPONSE_REQUESTED);
-
- packet->reserved = 0;
- if (!size)
- packet->data_offset = 0;
- else
- packet->data_offset = cpu_to_le32(24);
- packet->data_length = cpu_to_le32(size);
- packet->remaining_data_length = cpu_to_le32(remaining_data_length);
- packet->padding = 0;
-
- log_outgoing(INFO, "credits_requested=%d credits_granted=%d "
- "data_offset=%d data_length=%d remaining_data_length=%d\n",
- le16_to_cpu(packet->credits_requested),
- le16_to_cpu(packet->credits_granted),
- le32_to_cpu(packet->data_offset),
- le32_to_cpu(packet->data_length),
- le32_to_cpu(packet->remaining_data_length));
-
- /* Map the packet to DMA */
- header_length = sizeof(struct smbd_data_transfer);
- /* If this is a packet without payload, don't send padding */
- if (!size)
- header_length = offsetof(struct smbd_data_transfer, padding);
-
- request->num_sge = 1;
- request->sge[0].addr = ib_dma_map_single(info->id->device,
- (void *)packet,
- header_length,
- DMA_TO_DEVICE);
- if (ib_dma_mapping_error(info->id->device, request->sge[0].addr)) {
- mempool_free(request, info->request_mempool);
- rc = -EIO;
- goto err;
- }
-
- request->sge[0].length = header_length;
- request->sge[0].lkey = info->pd->local_dma_lkey;
-
- *request_out = request;
- return 0;
-
-err:
- atomic_inc(&info->send_credits);
- return rc;
-}
-
-static void smbd_destroy_header(struct smbd_connection *info,
- struct smbd_request *request)
-{
-
- ib_dma_unmap_single(info->id->device,
- request->sge[0].addr,
- request->sge[0].length,
- DMA_TO_DEVICE);
- mempool_free(request, info->request_mempool);
- atomic_inc(&info->send_credits);
-}
-
/* Post the send request */
static int smbd_post_send(struct smbd_connection *info,
- struct smbd_request *request, bool has_payload)
+ struct smbd_request *request)
{
struct ib_send_wr send_wr;
int rc, i;
@@ -951,24 +799,9 @@
send_wr.opcode = IB_WR_SEND;
send_wr.send_flags = IB_SEND_SIGNALED;
- if (has_payload) {
- request->has_payload = true;
- atomic_inc(&info->send_payload_pending);
- } else {
- request->has_payload = false;
- atomic_inc(&info->send_pending);
- }
-
rc = ib_post_send(info->id->qp, &send_wr, NULL);
if (rc) {
log_rdma_send(ERR, "ib_post_send failed rc=%d\n", rc);
- if (has_payload) {
- if (atomic_dec_and_test(&info->send_payload_pending))
- wake_up(&info->wait_send_payload_pending);
- } else {
- if (atomic_dec_and_test(&info->send_pending))
- wake_up(&info->wait_send_pending);
- }
smbd_disconnect_rdma_connection(info);
rc = -EAGAIN;
} else
@@ -984,14 +817,106 @@
{
int num_sgs;
int i, rc;
+ int header_length;
struct smbd_request *request;
+ struct smbd_data_transfer *packet;
+ int new_credits;
struct scatterlist *sg;
- rc = smbd_create_header(
- info, data_length, remaining_data_length, &request);
+wait_credit:
+ /* Wait for send credits. A SMBD packet needs one credit */
+ rc = wait_event_interruptible(info->wait_send_queue,
+ atomic_read(&info->send_credits) > 0 ||
+ info->transport_status != SMBD_CONNECTED);
if (rc)
- return rc;
+ goto err_wait_credit;
+ if (info->transport_status != SMBD_CONNECTED) {
+ log_outgoing(ERR, "disconnected not sending on wait_credit\n");
+ rc = -EAGAIN;
+ goto err_wait_credit;
+ }
+ if (unlikely(atomic_dec_return(&info->send_credits) < 0)) {
+ atomic_inc(&info->send_credits);
+ goto wait_credit;
+ }
+
+wait_send_queue:
+ wait_event(info->wait_post_send,
+ atomic_read(&info->send_pending) < info->send_credit_target ||
+ info->transport_status != SMBD_CONNECTED);
+
+ if (info->transport_status != SMBD_CONNECTED) {
+ log_outgoing(ERR, "disconnected not sending on wait_send_queue\n");
+ rc = -EAGAIN;
+ goto err_wait_send_queue;
+ }
+
+ if (unlikely(atomic_inc_return(&info->send_pending) >
+ info->send_credit_target)) {
+ atomic_dec(&info->send_pending);
+ goto wait_send_queue;
+ }
+
+ request = mempool_alloc(info->request_mempool, GFP_KERNEL);
+ if (!request) {
+ rc = -ENOMEM;
+ goto err_alloc;
+ }
+
+ request->info = info;
+
+ /* Fill in the packet header */
+ packet = smbd_request_payload(request);
+ packet->credits_requested = cpu_to_le16(info->send_credit_target);
+
+ new_credits = manage_credits_prior_sending(info);
+ atomic_add(new_credits, &info->receive_credits);
+ packet->credits_granted = cpu_to_le16(new_credits);
+
+ info->send_immediate = false;
+
+ packet->flags = 0;
+ if (manage_keep_alive_before_sending(info))
+ packet->flags |= cpu_to_le16(SMB_DIRECT_RESPONSE_REQUESTED);
+
+ packet->reserved = 0;
+ if (!data_length)
+ packet->data_offset = 0;
+ else
+ packet->data_offset = cpu_to_le32(24);
+ packet->data_length = cpu_to_le32(data_length);
+ packet->remaining_data_length = cpu_to_le32(remaining_data_length);
+ packet->padding = 0;
+
+ log_outgoing(INFO, "credits_requested=%d credits_granted=%d data_offset=%d data_length=%d remaining_data_length=%d\n",
+ le16_to_cpu(packet->credits_requested),
+ le16_to_cpu(packet->credits_granted),
+ le32_to_cpu(packet->data_offset),
+ le32_to_cpu(packet->data_length),
+ le32_to_cpu(packet->remaining_data_length));
+
+ /* Map the packet to DMA */
+ header_length = sizeof(struct smbd_data_transfer);
+ /* If this is a packet without payload, don't send padding */
+ if (!data_length)
+ header_length = offsetof(struct smbd_data_transfer, padding);
+
+ request->num_sge = 1;
+ request->sge[0].addr = ib_dma_map_single(info->id->device,
+ (void *)packet,
+ header_length,
+ DMA_TO_DEVICE);
+ if (ib_dma_mapping_error(info->id->device, request->sge[0].addr)) {
+ rc = -EIO;
+ request->sge[0].addr = 0;
+ goto err_dma;
+ }
+
+ request->sge[0].length = header_length;
+ request->sge[0].lkey = info->pd->local_dma_lkey;
+
+ /* Fill in the packet data payload */
num_sgs = sgl ? sg_nents(sgl) : 0;
for_each_sg(sgl, sg, num_sgs, i) {
request->sge[i+1].addr =
@@ -1001,25 +926,41 @@
info->id->device, request->sge[i+1].addr)) {
rc = -EIO;
request->sge[i+1].addr = 0;
- goto dma_mapping_failure;
+ goto err_dma;
}
request->sge[i+1].length = sg->length;
request->sge[i+1].lkey = info->pd->local_dma_lkey;
request->num_sge++;
}
- rc = smbd_post_send(info, request, data_length);
+ rc = smbd_post_send(info, request);
if (!rc)
return 0;
-dma_mapping_failure:
- for (i = 1; i < request->num_sge; i++)
+err_dma:
+ for (i = 0; i < request->num_sge; i++)
if (request->sge[i].addr)
ib_dma_unmap_single(info->id->device,
request->sge[i].addr,
request->sge[i].length,
DMA_TO_DEVICE);
- smbd_destroy_header(info, request);
+ mempool_free(request, info->request_mempool);
+
+ /* roll back receive credits and credits to be offered */
+ spin_lock(&info->lock_new_credits_offered);
+ info->new_credits_offered += new_credits;
+ spin_unlock(&info->lock_new_credits_offered);
+ atomic_sub(new_credits, &info->receive_credits);
+
+err_alloc:
+ if (atomic_dec_and_test(&info->send_pending))
+ wake_up(&info->wait_send_pending);
+
+err_wait_send_queue:
+ /* roll back send credits and pending */
+ atomic_inc(&info->send_credits);
+
+err_wait_credit:
return rc;
}
@@ -1127,11 +1068,9 @@
response->type = SMBD_NEGOTIATE_RESP;
rc = smbd_post_recv(info, response);
- log_rdma_event(INFO,
- "smbd_post_recv rc=%d iov.addr=%llx iov.length=%x "
- "iov.lkey=%x\n",
- rc, response->sge.addr,
- response->sge.length, response->sge.lkey);
+ log_rdma_event(INFO, "smbd_post_recv rc=%d iov.addr=%llx iov.length=%x iov.lkey=%x\n",
+ rc, response->sge.addr,
+ response->sge.length, response->sge.lkey);
if (rc)
return rc;
@@ -1341,25 +1280,6 @@
mempool_free(response, info->response_mempool);
}
-/*
- * Check and send an immediate or keep alive packet
- * The condition to send those packets are defined in [MS-SMBD] 3.1.1.1
- * Connection.KeepaliveRequested and Connection.SendImmediate
- * The idea is to extend credits to server as soon as it becomes available
- */
-static void send_immediate_work(struct work_struct *work)
-{
- struct smbd_connection *info = container_of(
- work, struct smbd_connection,
- send_immediate_work.work);
-
- if (info->keep_alive_requested == KEEP_ALIVE_PENDING ||
- info->send_immediate) {
- log_keep_alive(INFO, "send an empty message\n");
- smbd_post_send_empty(info);
- }
-}
-
/* Implement idle connection timer [MS-SMBD] 3.1.6.2 */
static void idle_connection_timer(struct work_struct *work)
{
@@ -1414,14 +1334,10 @@
log_rdma_event(INFO, "cancelling idle timer\n");
cancel_delayed_work_sync(&info->idle_timer_work);
- log_rdma_event(INFO, "cancelling send immediate work\n");
- cancel_delayed_work_sync(&info->send_immediate_work);
log_rdma_event(INFO, "wait for all send posted to IB to finish\n");
wait_event(info->wait_send_pending,
atomic_read(&info->send_pending) == 0);
- wait_event(info->wait_send_payload_pending,
- atomic_read(&info->send_payload_pending) == 0);
/* It's not posssible for upper layer to get to reassembly */
log_rdma_event(INFO, "drain the reassembly queue\n");
@@ -1612,25 +1528,19 @@
if (smbd_send_credit_target > info->id->device->attrs.max_cqe ||
smbd_send_credit_target > info->id->device->attrs.max_qp_wr) {
- log_rdma_event(ERR,
- "consider lowering send_credit_target = %d. "
- "Possible CQE overrun, device "
- "reporting max_cpe %d max_qp_wr %d\n",
- smbd_send_credit_target,
- info->id->device->attrs.max_cqe,
- info->id->device->attrs.max_qp_wr);
+ log_rdma_event(ERR, "consider lowering send_credit_target = %d. Possible CQE overrun, device reporting max_cpe %d max_qp_wr %d\n",
+ smbd_send_credit_target,
+ info->id->device->attrs.max_cqe,
+ info->id->device->attrs.max_qp_wr);
goto config_failed;
}
if (smbd_receive_credit_max > info->id->device->attrs.max_cqe ||
smbd_receive_credit_max > info->id->device->attrs.max_qp_wr) {
- log_rdma_event(ERR,
- "consider lowering receive_credit_max = %d. "
- "Possible CQE overrun, device "
- "reporting max_cpe %d max_qp_wr %d\n",
- smbd_receive_credit_max,
- info->id->device->attrs.max_cqe,
- info->id->device->attrs.max_qp_wr);
+ log_rdma_event(ERR, "consider lowering receive_credit_max = %d. Possible CQE overrun, device reporting max_cpe %d max_qp_wr %d\n",
+ smbd_receive_credit_max,
+ info->id->device->attrs.max_cqe,
+ info->id->device->attrs.max_qp_wr);
goto config_failed;
}
@@ -1751,18 +1661,15 @@
init_waitqueue_head(&info->wait_send_queue);
INIT_DELAYED_WORK(&info->idle_timer_work, idle_connection_timer);
- INIT_DELAYED_WORK(&info->send_immediate_work, send_immediate_work);
queue_delayed_work(info->workqueue, &info->idle_timer_work,
info->keep_alive_interval*HZ);
init_waitqueue_head(&info->wait_send_pending);
atomic_set(&info->send_pending, 0);
- init_waitqueue_head(&info->wait_send_payload_pending);
- atomic_set(&info->send_payload_pending, 0);
+ init_waitqueue_head(&info->wait_post_send);
INIT_WORK(&info->disconnect_work, smbd_disconnect_rdma_work);
- INIT_WORK(&info->recv_done_work, smbd_recv_done_work);
INIT_WORK(&info->post_send_credits_work, smbd_post_send_credits);
info->new_credits_offered = 0;
spin_lock_init(&info->lock_new_credits_offered);
@@ -1940,11 +1847,9 @@
to_read -= to_copy;
data_read += to_copy;
- log_read(INFO, "_get_first_reassembly memcpy %d bytes "
- "data_transfer_length-offset=%d after that "
- "to_read=%d data_read=%d offset=%d\n",
- to_copy, data_length - offset,
- to_read, data_read, offset);
+ log_read(INFO, "_get_first_reassembly memcpy %d bytes data_transfer_length-offset=%d after that to_read=%d data_read=%d offset=%d\n",
+ to_copy, data_length - offset,
+ to_read, data_read, offset);
}
spin_lock_irq(&info->reassembly_queue_lock);
@@ -1953,10 +1858,9 @@
spin_unlock_irq(&info->reassembly_queue_lock);
info->first_entry_offset = offset;
- log_read(INFO, "returning to thread data_read=%d "
- "reassembly_data_length=%d first_entry_offset=%d\n",
- data_read, info->reassembly_data_length,
- info->first_entry_offset);
+ log_read(INFO, "returning to thread data_read=%d reassembly_data_length=%d first_entry_offset=%d\n",
+ data_read, info->reassembly_data_length,
+ info->first_entry_offset);
read_rfc1002_done:
return data_read;
}
@@ -2027,7 +1931,7 @@
if (iov_iter_rw(&msg->msg_iter) == WRITE) {
/* It's a bug in upper layer to get there */
- cifs_dbg(VFS, "CIFS: invalid msg iter dir %u\n",
+ cifs_dbg(VFS, "Invalid msg iter dir %u\n",
iov_iter_rw(&msg->msg_iter));
rc = -EINVAL;
goto out;
@@ -2049,7 +1953,7 @@
default:
/* It's a bug in upper layer to get there */
- cifs_dbg(VFS, "CIFS: invalid msg type %d\n",
+ cifs_dbg(VFS, "Invalid msg type %d\n",
iov_iter_type(&msg->msg_iter));
rc = -EINVAL;
}
@@ -2097,8 +2001,7 @@
for (i = 0; i < num_rqst; i++)
remaining_data_length += smb_rqst_len(server, &rqst_array[i]);
- if (remaining_data_length + sizeof(struct smbd_data_transfer) >
- info->max_fragmented_send_size) {
+ if (remaining_data_length > info->max_fragmented_send_size) {
log_write(ERR, "payload size %d > max size %d\n",
remaining_data_length, info->max_fragmented_send_size);
rc = -EINVAL;
@@ -2119,10 +2022,9 @@
dump_smb(iov[i].iov_base, iov[i].iov_len);
- log_write(INFO, "rqst_idx=%d nvec=%d rqst->rq_npages=%d rq_pagesz=%d "
- "rq_tailsz=%d buflen=%lu\n",
- rqst_idx, rqst->rq_nvec, rqst->rq_npages, rqst->rq_pagesz,
- rqst->rq_tailsz, smb_rqst_len(server, rqst));
+ log_write(INFO, "rqst_idx=%d nvec=%d rqst->rq_npages=%d rq_pagesz=%d rq_tailsz=%d buflen=%lu\n",
+ rqst_idx, rqst->rq_nvec, rqst->rq_npages, rqst->rq_pagesz,
+ rqst->rq_tailsz, smb_rqst_len(server, rqst));
start = i = 0;
buflen = 0;
@@ -2132,11 +2034,9 @@
if (i > start) {
remaining_data_length -=
(buflen-iov[i].iov_len);
- log_write(INFO, "sending iov[] from start=%d "
- "i=%d nvecs=%d "
- "remaining_data_length=%d\n",
- start, i, i-start,
- remaining_data_length);
+ log_write(INFO, "sending iov[] from start=%d i=%d nvecs=%d remaining_data_length=%d\n",
+ start, i, i - start,
+ remaining_data_length);
rc = smbd_post_send_data(
info, &iov[start], i-start,
remaining_data_length);
@@ -2145,10 +2045,9 @@
} else {
/* iov[start] is too big, break it */
nvecs = (buflen+max_iov_size-1)/max_iov_size;
- log_write(INFO, "iov[%d] iov_base=%p buflen=%d"
- " break to %d vectors\n",
- start, iov[start].iov_base,
- buflen, nvecs);
+ log_write(INFO, "iov[%d] iov_base=%p buflen=%d break to %d vectors\n",
+ start, iov[start].iov_base,
+ buflen, nvecs);
for (j = 0; j < nvecs; j++) {
vec.iov_base =
(char *)iov[start].iov_base +
@@ -2160,11 +2059,9 @@
max_iov_size*(nvecs-1);
remaining_data_length -= vec.iov_len;
log_write(INFO,
- "sending vec j=%d iov_base=%p"
- " iov_len=%zu "
- "remaining_data_length=%d\n",
- j, vec.iov_base, vec.iov_len,
- remaining_data_length);
+ "sending vec j=%d iov_base=%p iov_len=%zu remaining_data_length=%d\n",
+ j, vec.iov_base, vec.iov_len,
+ remaining_data_length);
rc = smbd_post_send_data(
info, &vec, 1,
remaining_data_length);
@@ -2182,11 +2079,9 @@
if (i == rqst->rq_nvec) {
/* send out all remaining vecs */
remaining_data_length -= buflen;
- log_write(INFO,
- "sending iov[] from start=%d i=%d "
- "nvecs=%d remaining_data_length=%d\n",
- start, i, i-start,
- remaining_data_length);
+ log_write(INFO, "sending iov[] from start=%d i=%d nvecs=%d remaining_data_length=%d\n",
+ start, i, i - start,
+ remaining_data_length);
rc = smbd_post_send_data(info, &iov[start],
i-start, remaining_data_length);
if (rc)
@@ -2210,10 +2105,9 @@
if (j == nvecs-1)
size = buflen - j*max_iov_size;
remaining_data_length -= size;
- log_write(INFO, "sending pages i=%d offset=%d size=%d"
- " remaining_data_length=%d\n",
- i, j*max_iov_size+offset, size,
- remaining_data_length);
+ log_write(INFO, "sending pages i=%d offset=%d size=%d remaining_data_length=%d\n",
+ i, j * max_iov_size + offset, size,
+ remaining_data_length);
rc = smbd_post_send_page(
info, rqst->rq_pages[i],
j*max_iov_size + offset,
@@ -2235,8 +2129,8 @@
* that means all the I/Os have been out and we are good to return
*/
- wait_event(info->wait_send_payload_pending,
- atomic_read(&info->send_payload_pending) == 0);
+ wait_event(info->wait_send_pending,
+ atomic_read(&info->send_pending) == 0);
return rc;
}
@@ -2287,11 +2181,9 @@
info->pd, info->mr_type,
info->max_frmr_depth);
if (IS_ERR(smbdirect_mr->mr)) {
- log_rdma_mr(ERR,
- "ib_alloc_mr failed mr_type=%x "
- "max_frmr_depth=%x\n",
- info->mr_type,
- info->max_frmr_depth);
+ log_rdma_mr(ERR, "ib_alloc_mr failed mr_type=%x max_frmr_depth=%x\n",
+ info->mr_type,
+ info->max_frmr_depth);
smbd_disconnect_rdma_connection(info);
continue;
}
@@ -2354,9 +2246,8 @@
smbdirect_mr->mr = ib_alloc_mr(info->pd, info->mr_type,
info->max_frmr_depth);
if (IS_ERR(smbdirect_mr->mr)) {
- log_rdma_mr(ERR, "ib_alloc_mr failed mr_type=%x "
- "max_frmr_depth=%x\n",
- info->mr_type, info->max_frmr_depth);
+ log_rdma_mr(ERR, "ib_alloc_mr failed mr_type=%x max_frmr_depth=%x\n",
+ info->mr_type, info->max_frmr_depth);
goto out;
}
smbdirect_mr->sgl = kcalloc(
diff --git a/fs/cifs/smbdirect.h b/fs/cifs/smbdirect.h
index 6ff880a..a87fca8 100644
--- a/fs/cifs/smbdirect.h
+++ b/fs/cifs/smbdirect.h
@@ -67,7 +67,6 @@
bool negotiate_done;
struct work_struct disconnect_work;
- struct work_struct recv_done_work;
struct work_struct post_send_credits_work;
spinlock_t lock_new_credits_offered;
@@ -115,8 +114,7 @@
/* Activity accoutning */
atomic_t send_pending;
wait_queue_head_t wait_send_pending;
- atomic_t send_payload_pending;
- wait_queue_head_t wait_send_payload_pending;
+ wait_queue_head_t wait_post_send;
/* Receive queue */
struct list_head receive_queue;
@@ -155,7 +153,6 @@
struct workqueue_struct *workqueue;
struct delayed_work idle_timer_work;
- struct delayed_work send_immediate_work;
/* Memory pool for preallocating buffers */
/* request pool for RDMA send */
@@ -235,9 +232,6 @@
struct smbd_connection *info;
struct ib_cqe cqe;
- /* true if this request carries upper layer payload */
- bool has_payload;
-
/* the SGE entries for this packet */
struct ib_sge sge[SMBDIRECT_MAX_SGE];
int num_sge;
diff --git a/fs/cifs/smbfsctl.h b/fs/cifs/smbfsctl.h
index 1ff2852..a0e8474 100644
--- a/fs/cifs/smbfsctl.h
+++ b/fs/cifs/smbfsctl.h
@@ -103,6 +103,8 @@
#define FSCTL_SET_ZERO_ON_DEALLOC 0x00090194 /* BB add struct */
#define FSCTL_SET_SHORT_NAME_BEHAVIOR 0x000901B4 /* BB add struct */
#define FSCTL_GET_INTEGRITY_INFORMATION 0x0009027C
+#define FSCTL_GET_RETRIEVAL_POINTERS_AND_REFCOUNT 0x000903d3
+#define FSCTL_GET_RETRIEVAL_POINTER_COUNT 0x0009042b
#define FSCTL_QUERY_ALLOCATED_RANGES 0x000940CF
#define FSCTL_SET_DEFECT_MANAGEMENT 0x00098134 /* BB add struct */
#define FSCTL_FILE_LEVEL_TRIM 0x00098208 /* BB add struct */
diff --git a/fs/cifs/trace.h b/fs/cifs/trace.h
index e7e350b..90e0fab 100644
--- a/fs/cifs/trace.h
+++ b/fs/cifs/trace.h
@@ -318,6 +318,7 @@
TP_ARGS(xid, tid, sesid, full_path))
DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(query_info_compound_enter);
+DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(posix_query_info_compound_enter);
DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(hardlink_enter);
DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(rename_enter);
DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(rmdir_enter);
@@ -354,6 +355,7 @@
TP_ARGS(xid, tid, sesid))
DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(query_info_compound_done);
+DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(posix_query_info_compound_done);
DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(hardlink_done);
DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(rename_done);
DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(rmdir_done);
@@ -395,6 +397,7 @@
TP_ARGS(xid, tid, sesid, rc))
DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(query_info_compound_err);
+DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(posix_query_info_compound_err);
DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(hardlink_err);
DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(rename_err);
DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(rmdir_err);
@@ -547,6 +550,33 @@
DEFINE_SMB3_EXIT_ERR_EVENT(exit_err);
+
+DECLARE_EVENT_CLASS(smb3_sync_err_class,
+ TP_PROTO(unsigned long ino,
+ int rc),
+ TP_ARGS(ino, rc),
+ TP_STRUCT__entry(
+ __field(unsigned long, ino)
+ __field(int, rc)
+ ),
+ TP_fast_assign(
+ __entry->ino = ino;
+ __entry->rc = rc;
+ ),
+ TP_printk("\tino=%lu rc=%d",
+ __entry->ino, __entry->rc)
+)
+
+#define DEFINE_SMB3_SYNC_ERR_EVENT(name) \
+DEFINE_EVENT(smb3_sync_err_class, cifs_##name, \
+ TP_PROTO(unsigned long ino, \
+ int rc), \
+ TP_ARGS(ino, rc))
+
+DEFINE_SMB3_SYNC_ERR_EVENT(fsync_err);
+DEFINE_SMB3_SYNC_ERR_EVENT(flush_err);
+
+
DECLARE_EVENT_CLASS(smb3_enter_exit_class,
TP_PROTO(unsigned int xid,
const char *func_name),
@@ -848,33 +878,39 @@
DECLARE_EVENT_CLASS(smb3_credit_class,
TP_PROTO(__u64 currmid,
char *hostname,
- int credits),
- TP_ARGS(currmid, hostname, credits),
+ int credits,
+ int credits_to_add),
+ TP_ARGS(currmid, hostname, credits, credits_to_add),
TP_STRUCT__entry(
__field(__u64, currmid)
__field(char *, hostname)
__field(int, credits)
+ __field(int, credits_to_add)
),
TP_fast_assign(
__entry->currmid = currmid;
__entry->hostname = hostname;
__entry->credits = credits;
+ __entry->credits_to_add = credits_to_add;
),
- TP_printk("server=%s current_mid=0x%llx credits=%d",
+ TP_printk("server=%s current_mid=0x%llx credits=%d credits_to_add=%d",
__entry->hostname,
__entry->currmid,
- __entry->credits)
+ __entry->credits,
+ __entry->credits_to_add)
)
#define DEFINE_SMB3_CREDIT_EVENT(name) \
DEFINE_EVENT(smb3_credit_class, smb3_##name, \
TP_PROTO(__u64 currmid, \
char *hostname, \
- int credits), \
- TP_ARGS(currmid, hostname, credits))
+ int credits, \
+ int credits_to_add), \
+ TP_ARGS(currmid, hostname, credits, credits_to_add))
DEFINE_SMB3_CREDIT_EVENT(reconnect_with_invalid_credits);
DEFINE_SMB3_CREDIT_EVENT(credit_timeout);
+DEFINE_SMB3_CREDIT_EVENT(add_credits);
#endif /* _CIFS_TRACE_H */
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 61e7df4..503a005 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -101,7 +101,7 @@
if (midEntry->resp_buf && (midEntry->mid_flags & MID_WAIT_CANCELLED) &&
midEntry->mid_state == MID_RESPONSE_RECEIVED &&
server->ops->handle_cancelled_mid)
- server->ops->handle_cancelled_mid(midEntry->resp_buf, server);
+ server->ops->handle_cancelled_mid(midEntry, server);
midEntry->mid_state = MID_FREE;
atomic_dec(&midCount);
@@ -112,7 +112,7 @@
#ifdef CONFIG_CIFS_STATS2
now = jiffies;
if (now < midEntry->when_alloc)
- cifs_server_dbg(VFS, "invalid mid allocation time\n");
+ cifs_server_dbg(VFS, "Invalid mid allocation time\n");
roundtrip_time = now - midEntry->when_alloc;
if (smb_cmd < NUMBER_OF_SMB2_COMMANDS) {
@@ -151,12 +151,12 @@
trace_smb3_slow_rsp(smb_cmd, midEntry->mid, midEntry->pid,
midEntry->when_sent, midEntry->when_received);
if (cifsFYI & CIFS_TIMER) {
- pr_debug(" CIFS slow rsp: cmd %d mid %llu",
- midEntry->command, midEntry->mid);
- cifs_info(" A: 0x%lx S: 0x%lx R: 0x%lx\n",
- now - midEntry->when_alloc,
- now - midEntry->when_sent,
- now - midEntry->when_received);
+ pr_debug("slow rsp: cmd %d mid %llu",
+ midEntry->command, midEntry->mid);
+ cifs_info("A: 0x%lx S: 0x%lx R: 0x%lx\n",
+ now - midEntry->when_alloc,
+ now - midEntry->when_sent,
+ now - midEntry->when_received);
}
}
#endif
@@ -325,7 +325,6 @@
size_t total_len = 0, sent, size;
struct socket *ssocket = server->ssocket;
struct msghdr smb_msg;
- int val = 1;
__be32 rfc1002_marker;
if (cifs_rdma_enabled(server)) {
@@ -345,8 +344,7 @@
}
/* cork the socket */
- kernel_setsockopt(ssocket, SOL_TCP, TCP_CORK,
- (char *)&val, sizeof(val));
+ tcp_sock_set_cork(ssocket->sk, true);
for (j = 0; j < num_rqst; j++)
send_length += smb_rqst_len(server, &rqst[j]);
@@ -435,9 +433,7 @@
}
/* uncork it */
- val = 0;
- kernel_setsockopt(ssocket, SOL_TCP, TCP_CORK,
- (char *)&val, sizeof(val));
+ tcp_sock_set_cork(ssocket->sk, false);
if ((total_len > 0) && (total_len != send_length)) {
cifs_dbg(FYI, "partial send (wanted=%u sent=%zu): terminating session\n",
@@ -477,8 +473,7 @@
return -ENOMEM;
if (!server->ops->init_transform_rq) {
- cifs_server_dbg(VFS, "Encryption requested but transform "
- "callback is missing\n");
+ cifs_server_dbg(VFS, "Encryption requested but transform callback is missing\n");
return -EIO;
}
@@ -568,7 +563,7 @@
cifs_num_waiters_dec(server);
if (!rc) {
trace_smb3_credit_timeout(server->CurrentMid,
- server->hostname, num_credits);
+ server->hostname, num_credits, 0);
cifs_server_dbg(VFS, "wait timed out after %d ms\n",
timeout);
return -ENOTSUPP;
@@ -609,7 +604,8 @@
if (!rc) {
trace_smb3_credit_timeout(
server->CurrentMid,
- server->hostname, num_credits);
+ server->hostname, num_credits,
+ 0);
cifs_server_dbg(VFS, "wait timed out after %d ms\n",
timeout);
return -ENOTSUPP;
@@ -953,11 +949,12 @@
}
/* BB special case reconnect tid and uid here? */
- return map_smb_to_linux_error(mid->resp_buf, log_error);
+ return map_and_check_smb_error(mid, log_error);
}
struct mid_q_entry *
-cifs_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
+cifs_setup_request(struct cifs_ses *ses, struct TCP_Server_Info *ignored,
+ struct smb_rqst *rqst)
{
int rc;
struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
@@ -1004,8 +1001,35 @@
DeleteMidQEntry(mid);
}
+/*
+ * Return a channel (master if none) of @ses that can be used to send
+ * regular requests.
+ *
+ * If we are currently binding a new channel (negprot/sess.setup),
+ * return the new incomplete channel.
+ */
+struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses)
+{
+ uint index = 0;
+
+ if (!ses)
+ return NULL;
+
+ if (!ses->binding) {
+ /* round robin */
+ if (ses->chan_count > 1) {
+ index = (uint)atomic_inc_return(&ses->chan_seq);
+ index %= ses->chan_count;
+ }
+ return ses->chans[index].server;
+ } else {
+ return cifs_ses_server(ses);
+ }
+}
+
int
compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
+ struct TCP_Server_Info *server,
const int flags, const int num_rqst, struct smb_rqst *rqst,
int *resp_buf_type, struct kvec *resp_iov)
{
@@ -1017,19 +1041,17 @@
};
unsigned int instance;
char *buf;
- struct TCP_Server_Info *server;
optype = flags & CIFS_OP_MASK;
for (i = 0; i < num_rqst; i++)
resp_buf_type[i] = CIFS_NO_BUFFER; /* no response buf yet */
- if ((ses == NULL) || (ses->server == NULL)) {
+ if (!ses || !ses->server || !server) {
cifs_dbg(VFS, "Null session\n");
return -EIO;
}
- server = ses->server;
if (server->tcpStatus == CifsExiting)
return -ENOENT;
@@ -1074,7 +1096,7 @@
}
for (i = 0; i < num_rqst; i++) {
- midQ[i] = server->ops->setup_request(ses, &rqst[i]);
+ midQ[i] = server->ops->setup_request(ses, server, &rqst[i]);
if (IS_ERR(midQ[i])) {
revert_current_mid(server, i);
for (j = 0; j < i; j++)
@@ -1229,11 +1251,12 @@
int
cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
+ struct TCP_Server_Info *server,
struct smb_rqst *rqst, int *resp_buf_type, const int flags,
struct kvec *resp_iov)
{
- return compound_send_recv(xid, ses, flags, 1, rqst, resp_buf_type,
- resp_iov);
+ return compound_send_recv(xid, ses, server, flags, 1,
+ rqst, resp_buf_type, resp_iov);
}
int
@@ -1268,7 +1291,8 @@
rqst.rq_iov = new_iov;
rqst.rq_nvec = n_vec + 1;
- rc = cifs_send_recv(xid, ses, &rqst, resp_buf_type, flags, resp_iov);
+ rc = cifs_send_recv(xid, ses, ses->server,
+ &rqst, resp_buf_type, flags, resp_iov);
if (n_vec + 1 > CIFS_MAX_IOV_SIZE)
kfree(new_iov);
return rc;
@@ -1305,8 +1329,8 @@
use ses->maxReq */
if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
- cifs_server_dbg(VFS, "Illegal length, greater than maximum frame, %d\n",
- len);
+ cifs_server_dbg(VFS, "Invalid length, greater than maximum frame, %d\n",
+ len);
return -EIO;
}
@@ -1322,7 +1346,7 @@
rc = allocate_mid(ses, in_buf, &midQ);
if (rc) {
- mutex_unlock(&ses->server->srv_mutex);
+ mutex_unlock(&server->srv_mutex);
/* Update # of requests on wire to server */
add_credits(server, &credits, 0);
return rc;
@@ -1446,8 +1470,8 @@
use ses->maxReq */
if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
- cifs_tcon_dbg(VFS, "Illegal length, greater than maximum frame, %d\n",
- len);
+ cifs_tcon_dbg(VFS, "Invalid length, greater than maximum frame, %d\n",
+ len);
return -EIO;
}
diff --git a/fs/cifs/winucase.c b/fs/cifs/winucase.c
index 1a23a1d..59b6c57 100644
--- a/fs/cifs/winucase.c
+++ b/fs/cifs/winucase.c
@@ -9,7 +9,7 @@
*
* 3.1.5.3 Mapping UTF-16 Strings to Upper Case:
*
- * http://msdn.microsoft.com/en-us/library/hh877830.aspx
+ * https://msdn.microsoft.com/en-us/library/hh877830.aspx
* http://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=10921
*
* In particular, the table in "Windows 8 Upper Case Mapping Table.txt" was
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index db4ba8f..b829917 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -32,7 +32,8 @@
#include "cifs_unicode.h"
#define MAX_EA_VALUE_SIZE CIFSMaxBufSize
-#define CIFS_XATTR_CIFS_ACL "system.cifs_acl"
+#define CIFS_XATTR_CIFS_ACL "system.cifs_acl" /* DACL only */
+#define CIFS_XATTR_CIFS_NTSD "system.cifs_ntsd" /* owner plus DACL */
#define CIFS_XATTR_ATTRIB "cifs.dosattrib" /* full name: user.cifs.dosattrib */
#define CIFS_XATTR_CREATETIME "cifs.creationtime" /* user.cifs.creationtime */
/*
@@ -40,12 +41,62 @@
* confusing users and using the 20+ year old term 'cifs' when it is no longer
* secure, replaced by SMB2 (then even more highly secure SMB3) many years ago
*/
-#define SMB3_XATTR_CIFS_ACL "system.smb3_acl"
+#define SMB3_XATTR_CIFS_ACL "system.smb3_acl" /* DACL only */
+#define SMB3_XATTR_CIFS_NTSD "system.smb3_ntsd" /* owner plus DACL */
#define SMB3_XATTR_ATTRIB "smb3.dosattrib" /* full name: user.smb3.dosattrib */
#define SMB3_XATTR_CREATETIME "smb3.creationtime" /* user.smb3.creationtime */
/* BB need to add server (Samba e.g) support for security and trusted prefix */
-enum { XATTR_USER, XATTR_CIFS_ACL, XATTR_ACL_ACCESS, XATTR_ACL_DEFAULT };
+enum { XATTR_USER, XATTR_CIFS_ACL, XATTR_ACL_ACCESS, XATTR_ACL_DEFAULT,
+ XATTR_CIFS_NTSD };
+
+static int cifs_attrib_set(unsigned int xid, struct cifs_tcon *pTcon,
+ struct inode *inode, char *full_path,
+ const void *value, size_t size)
+{
+ ssize_t rc = -EOPNOTSUPP;
+ __u32 *pattrib = (__u32 *)value;
+ __u32 attrib;
+ FILE_BASIC_INFO info_buf;
+
+ if ((value == NULL) || (size != sizeof(__u32)))
+ return -ERANGE;
+
+ memset(&info_buf, 0, sizeof(info_buf));
+ attrib = *pattrib;
+ info_buf.Attributes = cpu_to_le32(attrib);
+ if (pTcon->ses->server->ops->set_file_info)
+ rc = pTcon->ses->server->ops->set_file_info(inode, full_path,
+ &info_buf, xid);
+ if (rc == 0)
+ CIFS_I(inode)->cifsAttrs = attrib;
+
+ return rc;
+}
+
+static int cifs_creation_time_set(unsigned int xid, struct cifs_tcon *pTcon,
+ struct inode *inode, char *full_path,
+ const void *value, size_t size)
+{
+ ssize_t rc = -EOPNOTSUPP;
+ __u64 *pcreation_time = (__u64 *)value;
+ __u64 creation_time;
+ FILE_BASIC_INFO info_buf;
+
+ if ((value == NULL) || (size != sizeof(__u64)))
+ return -ERANGE;
+
+ memset(&info_buf, 0, sizeof(info_buf));
+ creation_time = *pcreation_time;
+ info_buf.CreationTime = cpu_to_le64(creation_time);
+ if (pTcon->ses->server->ops->set_file_info)
+ rc = pTcon->ses->server->ops->set_file_info(inode, full_path,
+ &info_buf, xid);
+ if (rc == 0)
+ CIFS_I(inode)->createtime = creation_time;
+
+ return rc;
+}
static int cifs_xattr_set(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
@@ -86,6 +137,23 @@
switch (handler->flags) {
case XATTR_USER:
+ cifs_dbg(FYI, "%s:setting user xattr %s\n", __func__, name);
+ if ((strcmp(name, CIFS_XATTR_ATTRIB) == 0) ||
+ (strcmp(name, SMB3_XATTR_ATTRIB) == 0)) {
+ rc = cifs_attrib_set(xid, pTcon, inode, full_path,
+ value, size);
+ if (rc == 0) /* force revalidate of the inode */
+ CIFS_I(inode)->time = 0;
+ break;
+ } else if ((strcmp(name, CIFS_XATTR_CREATETIME) == 0) ||
+ (strcmp(name, SMB3_XATTR_CREATETIME) == 0)) {
+ rc = cifs_creation_time_set(xid, pTcon, inode,
+ full_path, value, size);
+ if (rc == 0) /* force revalidate of the inode */
+ CIFS_I(inode)->time = 0;
+ break;
+ }
+
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto out;
@@ -95,7 +163,8 @@
cifs_sb->local_nls, cifs_sb);
break;
- case XATTR_CIFS_ACL: {
+ case XATTR_CIFS_ACL:
+ case XATTR_CIFS_NTSD: {
struct cifs_ntsd *pacl;
if (!value)
@@ -106,12 +175,25 @@
} else {
memcpy(pacl, value, size);
if (value &&
- pTcon->ses->server->ops->set_acl)
- rc = pTcon->ses->server->ops->set_acl(pacl,
- size, inode,
- full_path, CIFS_ACL_DACL);
- else
+ pTcon->ses->server->ops->set_acl) {
+ rc = 0;
+ if (handler->flags == XATTR_CIFS_NTSD) {
+ /* set owner and DACL */
+ rc = pTcon->ses->server->ops->set_acl(
+ pacl, size, inode,
+ full_path,
+ CIFS_ACL_OWNER);
+ }
+ if (rc == 0) {
+ /* set DACL */
+ rc = pTcon->ses->server->ops->set_acl(
+ pacl, size, inode,
+ full_path,
+ CIFS_ACL_DACL);
+ }
+ } else {
rc = -EOPNOTSUPP;
+ }
if (rc == 0) /* force revalidate of the inode */
CIFS_I(inode)->time = 0;
kfree(pacl);
@@ -179,7 +261,7 @@
void *value, size_t size)
{
ssize_t rc;
- __u64 * pcreatetime;
+ __u64 *pcreatetime;
rc = cifs_revalidate_dentry_attr(dentry);
if (rc)
@@ -244,7 +326,9 @@
full_path, name, value, size, cifs_sb);
break;
- case XATTR_CIFS_ACL: {
+ case XATTR_CIFS_ACL:
+ case XATTR_CIFS_NTSD: {
+ /* the whole ntsd is fetched regardless */
u32 acllen;
struct cifs_ntsd *pacl;
@@ -382,6 +466,26 @@
.set = cifs_xattr_set,
};
+static const struct xattr_handler cifs_cifs_ntsd_xattr_handler = {
+ .name = CIFS_XATTR_CIFS_NTSD,
+ .flags = XATTR_CIFS_NTSD,
+ .get = cifs_xattr_get,
+ .set = cifs_xattr_set,
+};
+
+/*
+ * Although this is just an alias for the above, need to move away from
+ * confusing users and using the 20 year old term 'cifs' when it is no
+ * longer secure and was replaced by SMB2/SMB3 a long time ago, and
+ * SMB3 and later are highly secure.
+ */
+static const struct xattr_handler smb3_ntsd_xattr_handler = {
+ .name = SMB3_XATTR_CIFS_NTSD,
+ .flags = XATTR_CIFS_NTSD,
+ .get = cifs_xattr_get,
+ .set = cifs_xattr_set,
+};
+
static const struct xattr_handler cifs_posix_acl_access_xattr_handler = {
.name = XATTR_NAME_POSIX_ACL_ACCESS,
.flags = XATTR_ACL_ACCESS,
@@ -401,6 +505,8 @@
&cifs_os2_xattr_handler,
&cifs_cifs_acl_xattr_handler,
&smb3_acl_xattr_handler, /* alias for above since avoiding "cifs" */
+ &cifs_cifs_ntsd_xattr_handler,
+ &smb3_ntsd_xattr_handler, /* alias for above since avoiding "cifs" */
&cifs_posix_acl_access_xattr_handler,
&cifs_posix_acl_default_xattr_handler,
NULL