Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/coda/Kconfig b/fs/coda/Kconfig
index c0e5a7f..ae6759f 100644
--- a/fs/coda/Kconfig
+++ b/fs/coda/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
config CODA_FS
tristate "Coda file system support (advanced network fs)"
depends on INET
diff --git a/fs/coda/Makefile b/fs/coda/Makefile
index 1bab69a..78befb8 100644
--- a/fs/coda/Makefile
+++ b/fs/coda/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# Makefile for the Linux Coda filesystem routines.
#
@@ -5,7 +6,8 @@
obj-$(CONFIG_CODA_FS) += coda.o
coda-objs := psdev.o cache.o cnode.o inode.o dir.o file.o upcall.o \
- coda_linux.o symlink.o pioctl.o sysctl.o
+ coda_linux.o symlink.o pioctl.o
+coda-$(CONFIG_SYSCTL) += sysctl.o
# If you want debugging output, please uncomment the following line.
diff --git a/fs/coda/cache.c b/fs/coda/cache.c
index 201fc08..3b8c451 100644
--- a/fs/coda/cache.c
+++ b/fs/coda/cache.c
@@ -21,7 +21,7 @@
#include <linux/spinlock.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
+#include "coda_psdev.h"
#include "coda_linux.h"
#include "coda_cache.h"
diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c
index 845b5a6..06855f6 100644
--- a/fs/coda/cnode.c
+++ b/fs/coda/cnode.c
@@ -8,8 +8,8 @@
#include <linux/time.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
#include <linux/pagemap.h>
+#include "coda_psdev.h"
#include "coda_linux.h"
static inline int coda_fideq(struct CodaFid *fid1, struct CodaFid *fid2)
@@ -137,11 +137,6 @@
struct inode *inode;
unsigned long hash = coda_f2i(fid);
- if ( !sb ) {
- pr_warn("%s: no sb!\n", __func__);
- return NULL;
- }
-
inode = ilookup5(sb, hash, coda_test_inode, fid);
if ( !inode )
return NULL;
@@ -153,6 +148,16 @@
return inode;
}
+struct coda_file_info *coda_ftoc(struct file *file)
+{
+ struct coda_file_info *cfi = file->private_data;
+
+ BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+
+ return cfi;
+
+}
+
/* the CONTROL inode is made without asking attributes from Venus */
struct inode *coda_cnode_makectl(struct super_block *sb)
{
diff --git a/fs/coda/coda_fs_i.h b/fs/coda/coda_fs_i.h
index d702ba1..1763ff9 100644
--- a/fs/coda/coda_fs_i.h
+++ b/fs/coda/coda_fs_i.h
@@ -40,10 +40,9 @@
int cfi_magic; /* magic number */
struct file *cfi_container; /* container file for this cnode */
unsigned int cfi_mapcount; /* nr of times this file is mapped */
+ bool cfi_access_intent; /* is access intent supported */
};
-#define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data))
-
/* flags */
#define C_VATTR 0x1 /* Validity of vattr in inode */
#define C_FLUSH 0x2 /* used after a flush */
@@ -54,6 +53,7 @@
struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr);
struct inode *coda_cnode_makectl(struct super_block *sb);
struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb);
+struct coda_file_info *coda_ftoc(struct file *file);
void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *);
#endif
diff --git a/fs/coda/coda_int.h b/fs/coda/coda_int.h
index bb0b3e0..f82b59c 100644
--- a/fs/coda/coda_int.h
+++ b/fs/coda/coda_int.h
@@ -13,9 +13,19 @@
void coda_destroy_inodecache(void);
int __init coda_init_inodecache(void);
int coda_fsync(struct file *coda_file, loff_t start, loff_t end, int datasync);
+
+#ifdef CONFIG_SYSCTL
void coda_sysctl_init(void);
void coda_sysctl_clean(void);
+#else
+static inline void coda_sysctl_init(void)
+{
+}
+static inline void coda_sysctl_clean(void)
+{
+}
+#endif
#endif /* _CODA_INT_ */
diff --git a/fs/coda/coda_linux.c b/fs/coda/coda_linux.c
index f3d543d..2e1a5a1 100644
--- a/fs/coda/coda_linux.c
+++ b/fs/coda/coda_linux.c
@@ -18,7 +18,7 @@
#include <linux/string.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
+#include "coda_psdev.h"
#include "coda_linux.h"
/* initialize the debugging variables */
@@ -66,6 +66,25 @@
return coda_flags;
}
+static struct timespec64 coda_to_timespec64(struct coda_timespec ts)
+{
+ struct timespec64 ts64 = {
+ .tv_sec = ts.tv_sec,
+ .tv_nsec = ts.tv_nsec,
+ };
+
+ return ts64;
+}
+
+static struct coda_timespec timespec64_to_coda(struct timespec64 ts64)
+{
+ struct coda_timespec ts = {
+ .tv_sec = ts64.tv_sec,
+ .tv_nsec = ts64.tv_nsec,
+ };
+
+ return ts;
+}
/* utility functions below */
void coda_vattr_to_iattr(struct inode *inode, struct coda_vattr *attr)
@@ -105,11 +124,11 @@
if (attr->va_size != -1)
inode->i_blocks = (attr->va_size + 511) >> 9;
if (attr->va_atime.tv_sec != -1)
- inode->i_atime = timespec_to_timespec64(attr->va_atime);
+ inode->i_atime = coda_to_timespec64(attr->va_atime);
if (attr->va_mtime.tv_sec != -1)
- inode->i_mtime = timespec_to_timespec64(attr->va_mtime);
+ inode->i_mtime = coda_to_timespec64(attr->va_mtime);
if (attr->va_ctime.tv_sec != -1)
- inode->i_ctime = timespec_to_timespec64(attr->va_ctime);
+ inode->i_ctime = coda_to_timespec64(attr->va_ctime);
}
@@ -130,12 +149,12 @@
vattr->va_uid = (vuid_t) -1;
vattr->va_gid = (vgid_t) -1;
vattr->va_size = (off_t) -1;
- vattr->va_atime.tv_sec = (time_t) -1;
- vattr->va_atime.tv_nsec = (time_t) -1;
- vattr->va_mtime.tv_sec = (time_t) -1;
- vattr->va_mtime.tv_nsec = (time_t) -1;
- vattr->va_ctime.tv_sec = (time_t) -1;
- vattr->va_ctime.tv_nsec = (time_t) -1;
+ vattr->va_atime.tv_sec = (int64_t) -1;
+ vattr->va_atime.tv_nsec = (long) -1;
+ vattr->va_mtime.tv_sec = (int64_t) -1;
+ vattr->va_mtime.tv_nsec = (long) -1;
+ vattr->va_ctime.tv_sec = (int64_t) -1;
+ vattr->va_ctime.tv_nsec = (long) -1;
vattr->va_type = C_VNON;
vattr->va_fileid = -1;
vattr->va_gen = -1;
@@ -175,13 +194,13 @@
vattr->va_size = iattr->ia_size;
}
if ( valid & ATTR_ATIME ) {
- vattr->va_atime = timespec64_to_timespec(iattr->ia_atime);
+ vattr->va_atime = timespec64_to_coda(iattr->ia_atime);
}
if ( valid & ATTR_MTIME ) {
- vattr->va_mtime = timespec64_to_timespec(iattr->ia_mtime);
+ vattr->va_mtime = timespec64_to_coda(iattr->ia_mtime);
}
if ( valid & ATTR_CTIME ) {
- vattr->va_ctime = timespec64_to_timespec(iattr->ia_ctime);
+ vattr->va_ctime = timespec64_to_coda(iattr->ia_ctime);
}
}
diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h
index 126155c..d5ebd36 100644
--- a/fs/coda/coda_linux.h
+++ b/fs/coda/coda_linux.h
@@ -59,22 +59,6 @@
void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
unsigned short coda_flags_to_cflags(unsigned short);
-/* sysctl.h */
-void coda_sysctl_init(void);
-void coda_sysctl_clean(void);
-
-#define CODA_ALLOC(ptr, cast, size) do { \
- if (size < PAGE_SIZE) \
- ptr = kzalloc((unsigned long) size, GFP_KERNEL); \
- else \
- ptr = (cast)vzalloc((unsigned long) size); \
- if (!ptr) \
- pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
-} while (0)
-
-
-#define CODA_FREE(ptr, size) kvfree((ptr))
-
/* inode to cnode access functions */
static inline struct coda_inode_info *ITOC(struct inode *inode)
diff --git a/fs/coda/coda_psdev.h b/fs/coda/coda_psdev.h
new file mode 100644
index 0000000..52da08c
--- /dev/null
+++ b/fs/coda/coda_psdev.h
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __CODA_PSDEV_H
+#define __CODA_PSDEV_H
+
+#include <linux/backing-dev.h>
+#include <linux/magic.h>
+#include <linux/mutex.h>
+
+#define CODA_PSDEV_MAJOR 67
+#define MAX_CODADEVS 5 /* how many do we allow */
+
+struct kstatfs;
+
+/* messages between coda filesystem in kernel and Venus */
+struct upc_req {
+ struct list_head uc_chain;
+ caddr_t uc_data;
+ u_short uc_flags;
+ u_short uc_inSize; /* Size is at most 5000 bytes */
+ u_short uc_outSize;
+ u_short uc_opcode; /* copied from data to save lookup */
+ int uc_unique;
+ wait_queue_head_t uc_sleep; /* process' wait queue */
+};
+
+#define CODA_REQ_ASYNC 0x1
+#define CODA_REQ_READ 0x2
+#define CODA_REQ_WRITE 0x4
+#define CODA_REQ_ABORT 0x8
+
+/* communication pending/processing queues */
+struct venus_comm {
+ u_long vc_seq;
+ wait_queue_head_t vc_waitq; /* Venus wait queue */
+ struct list_head vc_pending;
+ struct list_head vc_processing;
+ int vc_inuse;
+ struct super_block *vc_sb;
+ struct mutex vc_mutex;
+};
+
+static inline struct venus_comm *coda_vcp(struct super_block *sb)
+{
+ return (struct venus_comm *)((sb)->s_fs_info);
+}
+
+/* upcalls */
+int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
+int venus_getattr(struct super_block *sb, struct CodaFid *fid,
+ struct coda_vattr *attr);
+int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
+int venus_lookup(struct super_block *sb, struct CodaFid *fid,
+ const char *name, int length, int *type,
+ struct CodaFid *resfid);
+int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
+ kuid_t uid);
+int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
+ struct file **f);
+int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
+ const char *name, int length,
+ struct CodaFid *newfid, struct coda_vattr *attrs);
+int venus_create(struct super_block *sb, struct CodaFid *dirfid,
+ const char *name, int length, int excl, int mode,
+ struct CodaFid *newfid, struct coda_vattr *attrs);
+int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
+ const char *name, int length);
+int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
+ const char *name, int length);
+int venus_readlink(struct super_block *sb, struct CodaFid *fid,
+ char *buffer, int *length);
+int venus_rename(struct super_block *sb, struct CodaFid *new_fid,
+ struct CodaFid *old_fid, size_t old_length,
+ size_t new_length, const char *old_name,
+ const char *new_name);
+int venus_link(struct super_block *sb, struct CodaFid *fid,
+ struct CodaFid *dirfid, const char *name, int len );
+int venus_symlink(struct super_block *sb, struct CodaFid *fid,
+ const char *name, int len, const char *symname, int symlen);
+int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
+int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
+ unsigned int cmd, struct PioctlData *data);
+int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out,
+ size_t nbytes);
+int venus_fsync(struct super_block *sb, struct CodaFid *fid);
+int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
+int venus_access_intent(struct super_block *sb, struct CodaFid *fid,
+ bool *access_intent_supported,
+ size_t count, loff_t ppos, int type);
+
+/*
+ * Statistics
+ */
+
+extern struct venus_comm coda_comms[];
+#endif
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 00876dd..ca40c25 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -23,7 +23,7 @@
#include <linux/uaccess.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
+#include "coda_psdev.h"
#include "coda_linux.h"
#include "coda_cache.h"
@@ -47,8 +47,8 @@
int type = 0;
if (length > CODA_MAXNAMLEN) {
- pr_err("name too long: lookup, %s (%*s)\n",
- coda_i2s(dir), (int)length, name);
+ pr_err("name too long: lookup, %s %zu\n",
+ coda_i2s(dir), length);
return ERR_PTR(-ENAMETOOLONG);
}
@@ -356,8 +356,7 @@
ino_t ino;
int ret;
- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;
cii = ITOC(file_inode(coda_file));
@@ -426,8 +425,7 @@
struct file *host_file;
int ret;
- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;
if (host_file->f_op->iterate || host_file->f_op->iterate_shared) {
diff --git a/fs/coda/file.c b/fs/coda/file.c
index 1cbc1f2..128d63d 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -20,22 +20,43 @@
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
+#include <linux/uio.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
-
+#include "coda_psdev.h"
#include "coda_linux.h"
#include "coda_int.h"
+struct coda_vm_ops {
+ atomic_t refcnt;
+ struct file *coda_file;
+ const struct vm_operations_struct *host_vm_ops;
+ struct vm_operations_struct vm_ops;
+};
+
static ssize_t
coda_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *coda_file = iocb->ki_filp;
- struct coda_file_info *cfi = CODA_FTOC(coda_file);
+ struct inode *coda_inode = file_inode(coda_file);
+ struct coda_file_info *cfi = coda_ftoc(coda_file);
+ loff_t ki_pos = iocb->ki_pos;
+ size_t count = iov_iter_count(to);
+ ssize_t ret;
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ ret = venus_access_intent(coda_inode->i_sb, coda_i2f(coda_inode),
+ &cfi->cfi_access_intent,
+ count, ki_pos, CODA_ACCESS_TYPE_READ);
+ if (ret)
+ goto finish_read;
- return vfs_iter_read(cfi->cfi_container, to, &iocb->ki_pos, 0);
+ ret = vfs_iter_read(cfi->cfi_container, to, &iocb->ki_pos, 0);
+
+finish_read:
+ venus_access_intent(coda_inode->i_sb, coda_i2f(coda_inode),
+ &cfi->cfi_access_intent,
+ count, ki_pos, CODA_ACCESS_TYPE_READ_FINISH);
+ return ret;
}
static ssize_t
@@ -43,13 +64,18 @@
{
struct file *coda_file = iocb->ki_filp;
struct inode *coda_inode = file_inode(coda_file);
- struct coda_file_info *cfi = CODA_FTOC(coda_file);
- struct file *host_file;
+ struct coda_file_info *cfi = coda_ftoc(coda_file);
+ struct file *host_file = cfi->cfi_container;
+ loff_t ki_pos = iocb->ki_pos;
+ size_t count = iov_iter_count(to);
ssize_t ret;
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ ret = venus_access_intent(coda_inode->i_sb, coda_i2f(coda_inode),
+ &cfi->cfi_access_intent,
+ count, ki_pos, CODA_ACCESS_TYPE_WRITE);
+ if (ret)
+ goto finish_write;
- host_file = cfi->cfi_container;
file_start_write(host_file);
inode_lock(coda_inode);
ret = vfs_iter_write(cfi->cfi_container, to, &iocb->ki_pos, 0);
@@ -58,26 +84,73 @@
coda_inode->i_mtime = coda_inode->i_ctime = current_time(coda_inode);
inode_unlock(coda_inode);
file_end_write(host_file);
+
+finish_write:
+ venus_access_intent(coda_inode->i_sb, coda_i2f(coda_inode),
+ &cfi->cfi_access_intent,
+ count, ki_pos, CODA_ACCESS_TYPE_WRITE_FINISH);
return ret;
}
+static void
+coda_vm_open(struct vm_area_struct *vma)
+{
+ struct coda_vm_ops *cvm_ops =
+ container_of(vma->vm_ops, struct coda_vm_ops, vm_ops);
+
+ atomic_inc(&cvm_ops->refcnt);
+
+ if (cvm_ops->host_vm_ops && cvm_ops->host_vm_ops->open)
+ cvm_ops->host_vm_ops->open(vma);
+}
+
+static void
+coda_vm_close(struct vm_area_struct *vma)
+{
+ struct coda_vm_ops *cvm_ops =
+ container_of(vma->vm_ops, struct coda_vm_ops, vm_ops);
+
+ if (cvm_ops->host_vm_ops && cvm_ops->host_vm_ops->close)
+ cvm_ops->host_vm_ops->close(vma);
+
+ if (atomic_dec_and_test(&cvm_ops->refcnt)) {
+ vma->vm_ops = cvm_ops->host_vm_ops;
+ fput(cvm_ops->coda_file);
+ kfree(cvm_ops);
+ }
+}
+
static int
coda_file_mmap(struct file *coda_file, struct vm_area_struct *vma)
{
- struct coda_file_info *cfi;
+ struct inode *coda_inode = file_inode(coda_file);
+ struct coda_file_info *cfi = coda_ftoc(coda_file);
+ struct file *host_file = cfi->cfi_container;
+ struct inode *host_inode = file_inode(host_file);
struct coda_inode_info *cii;
- struct file *host_file;
- struct inode *coda_inode, *host_inode;
-
- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
- host_file = cfi->cfi_container;
+ struct coda_vm_ops *cvm_ops;
+ loff_t ppos;
+ size_t count;
+ int ret;
if (!host_file->f_op->mmap)
return -ENODEV;
- coda_inode = file_inode(coda_file);
- host_inode = file_inode(host_file);
+ if (WARN_ON(coda_file != vma->vm_file))
+ return -EIO;
+
+ count = vma->vm_end - vma->vm_start;
+ ppos = vma->vm_pgoff * PAGE_SIZE;
+
+ ret = venus_access_intent(coda_inode->i_sb, coda_i2f(coda_inode),
+ &cfi->cfi_access_intent,
+ count, ppos, CODA_ACCESS_TYPE_MMAP);
+ if (ret)
+ return ret;
+
+ cvm_ops = kmalloc(sizeof(struct coda_vm_ops), GFP_KERNEL);
+ if (!cvm_ops)
+ return -ENOMEM;
cii = ITOC(coda_inode);
spin_lock(&cii->c_lock);
@@ -89,6 +162,7 @@
* the container file on us! */
else if (coda_inode->i_mapping != host_inode->i_mapping) {
spin_unlock(&cii->c_lock);
+ kfree(cvm_ops);
return -EBUSY;
}
@@ -97,7 +171,29 @@
cfi->cfi_mapcount++;
spin_unlock(&cii->c_lock);
- return call_mmap(host_file, vma);
+ vma->vm_file = get_file(host_file);
+ ret = call_mmap(vma->vm_file, vma);
+
+ if (ret) {
+ /* if call_mmap fails, our caller will put coda_file so we
+ * should drop the reference to the host_file that we got.
+ */
+ fput(host_file);
+ kfree(cvm_ops);
+ } else {
+ /* here we add redirects for the open/close vm_operations */
+ cvm_ops->host_vm_ops = vma->vm_ops;
+ if (vma->vm_ops)
+ cvm_ops->vm_ops = *vma->vm_ops;
+
+ cvm_ops->vm_ops.open = coda_vm_open;
+ cvm_ops->vm_ops.close = coda_vm_close;
+ cvm_ops->coda_file = coda_file;
+ atomic_set(&cvm_ops->refcnt, 1);
+
+ vma->vm_ops = &cvm_ops->vm_ops;
+ }
+ return ret;
}
int coda_open(struct inode *coda_inode, struct file *coda_file)
@@ -127,6 +223,8 @@
cfi->cfi_magic = CODA_MAGIC;
cfi->cfi_mapcount = 0;
cfi->cfi_container = host_file;
+ /* assume access intents are supported unless we hear otherwise */
+ cfi->cfi_access_intent = true;
BUG_ON(coda_file->private_data != NULL);
coda_file->private_data = cfi;
@@ -142,8 +240,7 @@
struct inode *host_inode;
int err;
- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);
err = venus_close(coda_inode->i_sb, coda_i2f(coda_inode),
coda_flags, coda_file->f_cred->fsuid);
@@ -185,8 +282,7 @@
return err;
inode_lock(coda_inode);
- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;
err = vfs_fsync(host_file, datasync);
@@ -207,4 +303,3 @@
.fsync = coda_fsync,
.splice_read = generic_file_splice_read,
};
-
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 97424cf..b1c70e2 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -27,7 +27,7 @@
#include <linux/vmalloc.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
+#include "coda_psdev.h"
#include "coda_linux.h"
#include "coda_cache.h"
@@ -54,17 +54,11 @@
return &ei->vfs_inode;
}
-static void coda_i_callback(struct rcu_head *head)
+static void coda_free_inode(struct inode *inode)
{
- struct inode *inode = container_of(head, struct inode, i_rcu);
kmem_cache_free(coda_inode_cachep, ITOC(inode));
}
-static void coda_destroy_inode(struct inode *inode)
-{
- call_rcu(&inode->i_rcu, coda_i_callback);
-}
-
static void init_once(void *foo)
{
struct coda_inode_info *ei = (struct coda_inode_info *) foo;
@@ -104,7 +98,7 @@
static const struct super_operations coda_super_operations =
{
.alloc_inode = coda_alloc_inode,
- .destroy_inode = coda_destroy_inode,
+ .free_inode = coda_free_inode,
.evict_inode = coda_evict_inode,
.put_super = coda_put_super,
.statfs = coda_statfs,
@@ -194,6 +188,9 @@
sb->s_magic = CODA_SUPER_MAGIC;
sb->s_op = &coda_super_operations;
sb->s_d_op = &coda_dentry_operations;
+ sb->s_time_gran = 1;
+ sb->s_time_min = S64_MIN;
+ sb->s_time_max = S64_MAX;
error = super_setup_bdi(sb);
if (error)
@@ -242,6 +239,7 @@
vcp->vc_sb = NULL;
sb->s_fs_info = NULL;
mutex_unlock(&vcp->vc_mutex);
+ mutex_destroy(&vcp->vc_mutex);
pr_info("Bye bye.\n");
}
diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c
index e0c17b7..3aec27e 100644
--- a/fs/coda/pioctl.c
+++ b/fs/coda/pioctl.c
@@ -20,8 +20,7 @@
#include <linux/uaccess.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
-
+#include "coda_psdev.h"
#include "coda_linux.h"
/* pioctl ops */
@@ -64,11 +63,8 @@
* Look up the pathname. Note that the pathname is in
* user memory, and namei takes care of this
*/
- if (data.follow)
- error = user_path(data.path, &path);
- else
- error = user_lpath(data.path, &path);
-
+ error = user_path_at(AT_FDCWD, data.path,
+ data.follow ? LOOKUP_FOLLOW : 0, &path);
if (error)
return error;
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index c5234c2..240669f 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* An implementation of a loadable kernel mode driver providing
* multiple kernel/user space bidirectional communications links.
*
* Author: Alan Cox <alan@lxorguk.ukuu.org.uk>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*
* Adapted to become the Linux 2.0 Coda pseudo device
* Peter Braam <braam@maths.ox.ac.uk>
@@ -39,12 +35,10 @@
#include <linux/device.h>
#include <linux/pid_namespace.h>
#include <asm/io.h>
-#include <linux/poll.h>
#include <linux/uaccess.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
-
+#include "coda_psdev.h"
#include "coda_linux.h"
#include "coda_int.h"
@@ -105,8 +99,12 @@
ssize_t retval = 0, count = 0;
int error;
+ /* make sure there is enough to copy out the (opcode, unique) values */
+ if (nbytes < (2 * sizeof(u_int32_t)))
+ return -EINVAL;
+
/* Peek at the opcode, uniquefier */
- if (copy_from_user(&hdr, buf, 2 * sizeof(u_long)))
+ if (copy_from_user(&hdr, buf, 2 * sizeof(u_int32_t)))
return -EFAULT;
if (DOWNCALL(hdr.opcode)) {
@@ -124,17 +122,21 @@
hdr.opcode, hdr.unique);
nbytes = size;
}
- CODA_ALLOC(dcbuf, union outputArgs *, nbytes);
+ dcbuf = kvmalloc(nbytes, GFP_KERNEL);
+ if (!dcbuf) {
+ retval = -ENOMEM;
+ goto out;
+ }
if (copy_from_user(dcbuf, buf, nbytes)) {
- CODA_FREE(dcbuf, nbytes);
+ kvfree(dcbuf);
retval = -EFAULT;
goto out;
}
/* what downcall errors does Venus handle ? */
- error = coda_downcall(vcp, hdr.opcode, dcbuf);
+ error = coda_downcall(vcp, hdr.opcode, dcbuf, nbytes);
- CODA_FREE(dcbuf, nbytes);
+ kvfree(dcbuf);
if (error) {
pr_warn("%s: coda_downcall error: %d\n",
__func__, error);
@@ -187,8 +189,11 @@
if (req->uc_opcode == CODA_OPEN_BY_FD) {
struct coda_open_by_fd_out *outp =
(struct coda_open_by_fd_out *)req->uc_data;
- if (!outp->oh.result)
+ if (!outp->oh.result) {
outp->fh = fget(outp->fd);
+ if (!outp->fh)
+ return -EBADF;
+ }
}
wake_up(&req->uc_sleep);
@@ -257,7 +262,7 @@
goto out;
}
- CODA_FREE(req->uc_data, sizeof(struct coda_in_hdr));
+ kvfree(req->uc_data);
kfree(req);
out:
mutex_unlock(&vcp->vc_mutex);
@@ -319,7 +324,7 @@
/* Async requests need to be freed here */
if (req->uc_flags & CODA_REQ_ASYNC) {
- CODA_FREE(req->uc_data, sizeof(struct coda_in_hdr));
+ kvfree(req->uc_data);
kfree(req);
continue;
}
@@ -352,13 +357,13 @@
.llseek = noop_llseek,
};
-static int init_coda_psdev(void)
+static int __init init_coda_psdev(void)
{
int i, err = 0;
if (register_chrdev(CODA_PSDEV_MAJOR, "coda", &coda_psdev_fops)) {
pr_err("%s: unable to get major %d\n",
__func__, CODA_PSDEV_MAJOR);
- return -EIO;
+ return -EIO;
}
coda_psdev_class = class_create(THIS_MODULE, "coda");
if (IS_ERR(coda_psdev_class)) {
@@ -383,7 +388,7 @@
MODULE_DESCRIPTION("Coda Distributed File System VFS interface");
MODULE_ALIAS_CHARDEV_MAJOR(CODA_PSDEV_MAJOR);
MODULE_LICENSE("GPL");
-MODULE_VERSION("6.6");
+MODULE_VERSION("7.0");
static int __init init_coda(void)
{
diff --git a/fs/coda/symlink.c b/fs/coda/symlink.c
index 202297d..8907d05 100644
--- a/fs/coda/symlink.c
+++ b/fs/coda/symlink.c
@@ -17,8 +17,7 @@
#include <linux/pagemap.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
-
+#include "coda_psdev.h"
#include "coda_linux.h"
static int coda_symlink_filler(struct file *file, struct page *page)
diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c
index 0301d45..fda3b70 100644
--- a/fs/coda/sysctl.c
+++ b/fs/coda/sysctl.c
@@ -12,7 +12,6 @@
#include "coda_int.h"
-#ifdef CONFIG_SYSCTL
static struct ctl_table_header *fs_table_header;
static struct ctl_table coda_table[] = {
@@ -62,13 +61,3 @@
fs_table_header = NULL;
}
}
-
-#else
-void coda_sysctl_init(void)
-{
-}
-
-void coda_sysctl_clean(void)
-{
-}
-#endif
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index 1175a17..eb3b189 100644
--- a/fs/coda/upcall.c
+++ b/fs/coda/upcall.c
@@ -33,7 +33,7 @@
#include <linux/vfs.h>
#include <linux/coda.h>
-#include <linux/coda_psdev.h>
+#include "coda_psdev.h"
#include "coda_linux.h"
#include "coda_cache.h"
@@ -46,7 +46,7 @@
{
union inputArgs *inp;
- CODA_ALLOC(inp, union inputArgs *, size);
+ inp = kvzalloc(size, GFP_KERNEL);
if (!inp)
return ERR_PTR(-ENOMEM);
@@ -85,7 +85,7 @@
if (!error)
*fidp = outp->coda_root.VFid;
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -104,7 +104,7 @@
if (!error)
*attr = outp->coda_getattr.attr;
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -123,7 +123,7 @@
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -153,7 +153,7 @@
*type = outp->coda_lookup.vtype;
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -173,7 +173,7 @@
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -194,7 +194,7 @@
if (!error)
*fh = outp->coda_open_by_fd.fh;
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -224,7 +224,7 @@
*newfid = outp->coda_mkdir.VFid;
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -262,7 +262,7 @@
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -295,7 +295,7 @@
*newfid = outp->coda_create.VFid;
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -318,7 +318,7 @@
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -340,7 +340,7 @@
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -370,7 +370,7 @@
*(buffer + retlen) = '\0';
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -398,7 +398,7 @@
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -433,7 +433,7 @@
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -449,7 +449,7 @@
inp->coda_fsync.VFid = *fid;
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -467,7 +467,7 @@
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -543,7 +543,7 @@
}
exit:
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -553,7 +553,7 @@
union outputArgs *outp;
int insize, outsize, error;
- insize = max_t(unsigned int, INSIZE(statfs), OUTSIZE(statfs));
+ insize = SIZE(statfs);
UPARG(CODA_STATFS);
error = coda_upcall(coda_vcp(dentry->d_sb), insize, &outsize, inp);
@@ -565,10 +565,51 @@
sfs->f_ffree = outp->coda_statfs.stat.f_ffree;
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
+int venus_access_intent(struct super_block *sb, struct CodaFid *fid,
+ bool *access_intent_supported,
+ size_t count, loff_t ppos, int type)
+{
+ union inputArgs *inp;
+ union outputArgs *outp;
+ int insize, outsize, error;
+ bool finalizer =
+ type == CODA_ACCESS_TYPE_READ_FINISH ||
+ type == CODA_ACCESS_TYPE_WRITE_FINISH;
+
+ if (!*access_intent_supported && !finalizer)
+ return 0;
+
+ insize = SIZE(access_intent);
+ UPARG(CODA_ACCESS_INTENT);
+
+ inp->coda_access_intent.VFid = *fid;
+ inp->coda_access_intent.count = count;
+ inp->coda_access_intent.pos = ppos;
+ inp->coda_access_intent.type = type;
+
+ error = coda_upcall(coda_vcp(sb), insize,
+ finalizer ? NULL : &outsize, inp);
+
+ /*
+ * we have to free the request buffer for synchronous upcalls
+ * or when asynchronous upcalls fail, but not when asynchronous
+ * upcalls succeed
+ */
+ if (!finalizer || error)
+ kvfree(inp);
+
+ /* Chunked access is not supported or an old Coda client */
+ if (error == -EOPNOTSUPP) {
+ *access_intent_supported = false;
+ error = 0;
+ }
+ return error;
+}
+
/*
* coda_upcall and coda_downcall routines.
*/
@@ -598,10 +639,12 @@
* has seen them,
* - CODA_CLOSE or CODA_RELEASE upcall (to avoid reference count problems)
* - CODA_STORE (to avoid data loss)
+ * - CODA_ACCESS_INTENT (to avoid reference count problems)
*/
#define CODA_INTERRUPTIBLE(r) (!coda_hard && \
(((r)->uc_opcode != CODA_CLOSE && \
(r)->uc_opcode != CODA_STORE && \
+ (r)->uc_opcode != CODA_ACCESS_INTENT && \
(r)->uc_opcode != CODA_RELEASE) || \
(r)->uc_flags & CODA_REQ_READ))
@@ -687,21 +730,25 @@
goto exit;
}
- req->uc_data = (void *)buffer;
- req->uc_flags = 0;
- req->uc_inSize = inSize;
- req->uc_outSize = *outSize ? *outSize : inSize;
- req->uc_opcode = ((union inputArgs *)buffer)->ih.opcode;
- req->uc_unique = ++vcp->vc_seq;
- init_waitqueue_head(&req->uc_sleep);
+ buffer->ih.unique = ++vcp->vc_seq;
- /* Fill in the common input args. */
- ((union inputArgs *)buffer)->ih.unique = req->uc_unique;
+ req->uc_data = (void *)buffer;
+ req->uc_flags = outSize ? 0 : CODA_REQ_ASYNC;
+ req->uc_inSize = inSize;
+ req->uc_outSize = (outSize && *outSize) ? *outSize : inSize;
+ req->uc_opcode = buffer->ih.opcode;
+ req->uc_unique = buffer->ih.unique;
+ init_waitqueue_head(&req->uc_sleep);
/* Append msg to pending queue and poke Venus. */
list_add_tail(&req->uc_chain, &vcp->vc_pending);
-
wake_up_interruptible(&vcp->vc_waitq);
+
+ if (req->uc_flags & CODA_REQ_ASYNC) {
+ mutex_unlock(&vcp->vc_mutex);
+ return 0;
+ }
+
/* We can be interrupted while we wait for Venus to process
* our request. If the interrupt occurs before Venus has read
* the request, we dequeue and return. If it occurs after the
@@ -743,20 +790,20 @@
sig_req = kmalloc(sizeof(struct upc_req), GFP_KERNEL);
if (!sig_req) goto exit;
- CODA_ALLOC((sig_req->uc_data), char *, sizeof(struct coda_in_hdr));
- if (!sig_req->uc_data) {
+ sig_inputArgs = kvzalloc(sizeof(struct coda_in_hdr), GFP_KERNEL);
+ if (!sig_inputArgs) {
kfree(sig_req);
goto exit;
}
error = -EINTR;
- sig_inputArgs = (union inputArgs *)sig_req->uc_data;
sig_inputArgs->ih.opcode = CODA_SIGNAL;
sig_inputArgs->ih.unique = req->uc_unique;
sig_req->uc_flags = CODA_REQ_ASYNC;
sig_req->uc_opcode = sig_inputArgs->ih.opcode;
sig_req->uc_unique = sig_inputArgs->ih.unique;
+ sig_req->uc_data = (void *)sig_inputArgs;
sig_req->uc_inSize = sizeof(struct coda_in_hdr);
sig_req->uc_outSize = sizeof(struct coda_in_hdr);
@@ -804,12 +851,44 @@
*
* CODA_REPLACE -- replace one CodaFid with another throughout the name cache */
-int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out)
+int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out,
+ size_t nbytes)
{
struct inode *inode = NULL;
struct CodaFid *fid = NULL, *newfid;
struct super_block *sb;
+ /*
+ * Make sure we have received enough data from the cache
+ * manager to populate the necessary fields in the buffer
+ */
+ switch (opcode) {
+ case CODA_PURGEUSER:
+ if (nbytes < sizeof(struct coda_purgeuser_out))
+ return -EINVAL;
+ break;
+
+ case CODA_ZAPDIR:
+ if (nbytes < sizeof(struct coda_zapdir_out))
+ return -EINVAL;
+ break;
+
+ case CODA_ZAPFILE:
+ if (nbytes < sizeof(struct coda_zapfile_out))
+ return -EINVAL;
+ break;
+
+ case CODA_PURGEFID:
+ if (nbytes < sizeof(struct coda_purgefid_out))
+ return -EINVAL;
+ break;
+
+ case CODA_REPLACE:
+ if (nbytes < sizeof(struct coda_replace_out))
+ return -EINVAL;
+ break;
+ }
+
/* Handle invalidation requests. */
mutex_lock(&vcp->vc_mutex);
sb = vcp->vc_sb;
@@ -879,4 +958,3 @@
iput(inode);
return 0;
}
-