v4.19.13 snapshot.
diff --git a/fs/orangefs/orangefs-utils.c b/fs/orangefs/orangefs-utils.c
new file mode 100644
index 0000000..804c8a2
--- /dev/null
+++ b/fs/orangefs/orangefs-utils.c
@@ -0,0 +1,575 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) 2001 Clemson University and The University of Chicago
+ *
+ * See COPYING in top-level directory.
+ */
+#include <linux/kernel.h>
+#include "protocol.h"
+#include "orangefs-kernel.h"
+#include "orangefs-dev-proto.h"
+#include "orangefs-bufmap.h"
+
+__s32 fsid_of_op(struct orangefs_kernel_op_s *op)
+{
+ __s32 fsid = ORANGEFS_FS_ID_NULL;
+
+ if (op) {
+ switch (op->upcall.type) {
+ case ORANGEFS_VFS_OP_FILE_IO:
+ fsid = op->upcall.req.io.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_LOOKUP:
+ fsid = op->upcall.req.lookup.parent_refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_CREATE:
+ fsid = op->upcall.req.create.parent_refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_GETATTR:
+ fsid = op->upcall.req.getattr.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_REMOVE:
+ fsid = op->upcall.req.remove.parent_refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_MKDIR:
+ fsid = op->upcall.req.mkdir.parent_refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_READDIR:
+ fsid = op->upcall.req.readdir.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_SETATTR:
+ fsid = op->upcall.req.setattr.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_SYMLINK:
+ fsid = op->upcall.req.sym.parent_refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_RENAME:
+ fsid = op->upcall.req.rename.old_parent_refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_STATFS:
+ fsid = op->upcall.req.statfs.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_TRUNCATE:
+ fsid = op->upcall.req.truncate.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_RA_FLUSH:
+ fsid = op->upcall.req.ra_cache_flush.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_FS_UMOUNT:
+ fsid = op->upcall.req.fs_umount.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_GETXATTR:
+ fsid = op->upcall.req.getxattr.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_SETXATTR:
+ fsid = op->upcall.req.setxattr.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_LISTXATTR:
+ fsid = op->upcall.req.listxattr.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_REMOVEXATTR:
+ fsid = op->upcall.req.removexattr.refn.fs_id;
+ break;
+ case ORANGEFS_VFS_OP_FSYNC:
+ fsid = op->upcall.req.fsync.refn.fs_id;
+ break;
+ default:
+ break;
+ }
+ }
+ return fsid;
+}
+
+static int orangefs_inode_flags(struct ORANGEFS_sys_attr_s *attrs)
+{
+ int flags = 0;
+ if (attrs->flags & ORANGEFS_IMMUTABLE_FL)
+ flags |= S_IMMUTABLE;
+ else
+ flags &= ~S_IMMUTABLE;
+ if (attrs->flags & ORANGEFS_APPEND_FL)
+ flags |= S_APPEND;
+ else
+ flags &= ~S_APPEND;
+ if (attrs->flags & ORANGEFS_NOATIME_FL)
+ flags |= S_NOATIME;
+ else
+ flags &= ~S_NOATIME;
+ return flags;
+}
+
+static int orangefs_inode_perms(struct ORANGEFS_sys_attr_s *attrs)
+{
+ int perm_mode = 0;
+
+ if (attrs->perms & ORANGEFS_O_EXECUTE)
+ perm_mode |= S_IXOTH;
+ if (attrs->perms & ORANGEFS_O_WRITE)
+ perm_mode |= S_IWOTH;
+ if (attrs->perms & ORANGEFS_O_READ)
+ perm_mode |= S_IROTH;
+
+ if (attrs->perms & ORANGEFS_G_EXECUTE)
+ perm_mode |= S_IXGRP;
+ if (attrs->perms & ORANGEFS_G_WRITE)
+ perm_mode |= S_IWGRP;
+ if (attrs->perms & ORANGEFS_G_READ)
+ perm_mode |= S_IRGRP;
+
+ if (attrs->perms & ORANGEFS_U_EXECUTE)
+ perm_mode |= S_IXUSR;
+ if (attrs->perms & ORANGEFS_U_WRITE)
+ perm_mode |= S_IWUSR;
+ if (attrs->perms & ORANGEFS_U_READ)
+ perm_mode |= S_IRUSR;
+
+ if (attrs->perms & ORANGEFS_G_SGID)
+ perm_mode |= S_ISGID;
+ if (attrs->perms & ORANGEFS_U_SUID)
+ perm_mode |= S_ISUID;
+
+ return perm_mode;
+}
+
+/*
+ * NOTE: in kernel land, we never use the sys_attr->link_target for
+ * anything, so don't bother copying it into the sys_attr object here.
+ */
+static inline int copy_attributes_from_inode(struct inode *inode,
+ struct ORANGEFS_sys_attr_s *attrs,
+ struct iattr *iattr)
+{
+ umode_t tmp_mode;
+
+ if (!iattr || !inode || !attrs) {
+ gossip_err("NULL iattr (%p), inode (%p), attrs (%p) "
+ "in copy_attributes_from_inode!\n",
+ iattr,
+ inode,
+ attrs);
+ return -EINVAL;
+ }
+ /*
+ * We need to be careful to only copy the attributes out of the
+ * iattr object that we know are valid.
+ */
+ attrs->mask = 0;
+ if (iattr->ia_valid & ATTR_UID) {
+ attrs->owner = from_kuid(&init_user_ns, iattr->ia_uid);
+ attrs->mask |= ORANGEFS_ATTR_SYS_UID;
+ gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner);
+ }
+ if (iattr->ia_valid & ATTR_GID) {
+ attrs->group = from_kgid(&init_user_ns, iattr->ia_gid);
+ attrs->mask |= ORANGEFS_ATTR_SYS_GID;
+ gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group);
+ }
+
+ if (iattr->ia_valid & ATTR_ATIME) {
+ attrs->mask |= ORANGEFS_ATTR_SYS_ATIME;
+ if (iattr->ia_valid & ATTR_ATIME_SET) {
+ attrs->atime = (time64_t)iattr->ia_atime.tv_sec;
+ attrs->mask |= ORANGEFS_ATTR_SYS_ATIME_SET;
+ }
+ }
+ if (iattr->ia_valid & ATTR_MTIME) {
+ attrs->mask |= ORANGEFS_ATTR_SYS_MTIME;
+ if (iattr->ia_valid & ATTR_MTIME_SET) {
+ attrs->mtime = (time64_t)iattr->ia_mtime.tv_sec;
+ attrs->mask |= ORANGEFS_ATTR_SYS_MTIME_SET;
+ }
+ }
+ if (iattr->ia_valid & ATTR_CTIME)
+ attrs->mask |= ORANGEFS_ATTR_SYS_CTIME;
+
+ /*
+ * ORANGEFS cannot set size with a setattr operation. Probably not
+ * likely to be requested through the VFS, but just in case, don't
+ * worry about ATTR_SIZE
+ */
+
+ if (iattr->ia_valid & ATTR_MODE) {
+ tmp_mode = iattr->ia_mode;
+ if (tmp_mode & (S_ISVTX)) {
+ if (is_root_handle(inode)) {
+ /*
+ * allow sticky bit to be set on root (since
+ * it shows up that way by default anyhow),
+ * but don't show it to the server
+ */
+ tmp_mode -= S_ISVTX;
+ } else {
+ gossip_debug(GOSSIP_UTILS_DEBUG,
+ "%s: setting sticky bit not supported.\n",
+ __func__);
+ return -EINVAL;
+ }
+ }
+
+ if (tmp_mode & (S_ISUID)) {
+ gossip_debug(GOSSIP_UTILS_DEBUG,
+ "%s: setting setuid bit not supported.\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ attrs->perms = ORANGEFS_util_translate_mode(tmp_mode);
+ attrs->mask |= ORANGEFS_ATTR_SYS_PERM;
+ }
+
+ return 0;
+}
+
+static int orangefs_inode_type(enum orangefs_ds_type objtype)
+{
+ if (objtype == ORANGEFS_TYPE_METAFILE)
+ return S_IFREG;
+ else if (objtype == ORANGEFS_TYPE_DIRECTORY)
+ return S_IFDIR;
+ else if (objtype == ORANGEFS_TYPE_SYMLINK)
+ return S_IFLNK;
+ else
+ return -1;
+}
+
+static void orangefs_make_bad_inode(struct inode *inode)
+{
+ if (is_root_handle(inode)) {
+ /*
+ * if this occurs, the pvfs2-client-core was killed but we
+ * can't afford to lose the inode operations and such
+ * associated with the root handle in any case.
+ */
+ gossip_debug(GOSSIP_UTILS_DEBUG,
+ "*** NOT making bad root inode %pU\n",
+ get_khandle_from_ino(inode));
+ } else {
+ gossip_debug(GOSSIP_UTILS_DEBUG,
+ "*** making bad inode %pU\n",
+ get_khandle_from_ino(inode));
+ make_bad_inode(inode);
+ }
+}
+
+static int orangefs_inode_is_stale(struct inode *inode,
+ struct ORANGEFS_sys_attr_s *attrs, char *link_target)
+{
+ struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
+ int type = orangefs_inode_type(attrs->objtype);
+ /*
+ * If the inode type or symlink target have changed then this
+ * inode is stale.
+ */
+ if (type == -1 || !(inode->i_mode & type)) {
+ orangefs_make_bad_inode(inode);
+ return 1;
+ }
+ if (type == S_IFLNK && strncmp(orangefs_inode->link_target,
+ link_target, ORANGEFS_NAME_MAX)) {
+ orangefs_make_bad_inode(inode);
+ return 1;
+ }
+ return 0;
+}
+
+int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
+ u32 request_mask)
+{
+ struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
+ struct orangefs_kernel_op_s *new_op;
+ loff_t inode_size;
+ int ret, type;
+
+ gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
+ get_khandle_from_ino(inode));
+
+ if (!new && !bypass) {
+ /*
+ * Must have all the attributes in the mask and be within cache
+ * time.
+ */
+ if ((request_mask & orangefs_inode->getattr_mask) ==
+ request_mask &&
+ time_before(jiffies, orangefs_inode->getattr_time))
+ return 0;
+ }
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
+ if (!new_op)
+ return -ENOMEM;
+ new_op->upcall.req.getattr.refn = orangefs_inode->refn;
+ /*
+ * Size is the hardest attribute to get. The incremental cost of any
+ * other attribute is essentially zero.
+ */
+ if (request_mask & STATX_SIZE || new)
+ new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_ALL_NOHINT;
+ else
+ new_op->upcall.req.getattr.mask =
+ ORANGEFS_ATTR_SYS_ALL_NOHINT & ~ORANGEFS_ATTR_SYS_SIZE;
+
+ ret = service_operation(new_op, __func__,
+ get_interruptible_flag(inode));
+ if (ret != 0)
+ goto out;
+
+ if (!new) {
+ ret = orangefs_inode_is_stale(inode,
+ &new_op->downcall.resp.getattr.attributes,
+ new_op->downcall.resp.getattr.link_target);
+ if (ret) {
+ ret = -ESTALE;
+ goto out;
+ }
+ }
+
+ type = orangefs_inode_type(new_op->
+ downcall.resp.getattr.attributes.objtype);
+ switch (type) {
+ case S_IFREG:
+ inode->i_flags = orangefs_inode_flags(&new_op->
+ downcall.resp.getattr.attributes);
+ if (request_mask & STATX_SIZE || new) {
+ inode_size = (loff_t)new_op->
+ downcall.resp.getattr.attributes.size;
+ inode->i_size = inode_size;
+ inode->i_blkbits = ffs(new_op->downcall.resp.getattr.
+ attributes.blksize);
+ spin_lock(&inode->i_lock);
+ inode->i_bytes = inode_size;
+ inode->i_blocks =
+ (inode_size + 512 - inode_size % 512)/512;
+ spin_unlock(&inode->i_lock);
+ }
+ break;
+ case S_IFDIR:
+ if (request_mask & STATX_SIZE || new) {
+ inode->i_size = PAGE_SIZE;
+ spin_lock(&inode->i_lock);
+ inode_set_bytes(inode, inode->i_size);
+ spin_unlock(&inode->i_lock);
+ }
+ set_nlink(inode, 1);
+ break;
+ case S_IFLNK:
+ if (new) {
+ inode->i_size = (loff_t)strlen(new_op->
+ downcall.resp.getattr.link_target);
+ ret = strscpy(orangefs_inode->link_target,
+ new_op->downcall.resp.getattr.link_target,
+ ORANGEFS_NAME_MAX);
+ if (ret == -E2BIG) {
+ ret = -EIO;
+ goto out;
+ }
+ inode->i_link = orangefs_inode->link_target;
+ }
+ break;
+ /* i.e. -1 */
+ default:
+ /* XXX: ESTALE? This is what is done if it is not new. */
+ orangefs_make_bad_inode(inode);
+ ret = -ESTALE;
+ goto out;
+ }
+
+ inode->i_uid = make_kuid(&init_user_ns, new_op->
+ downcall.resp.getattr.attributes.owner);
+ inode->i_gid = make_kgid(&init_user_ns, new_op->
+ downcall.resp.getattr.attributes.group);
+ inode->i_atime.tv_sec = (time64_t)new_op->
+ downcall.resp.getattr.attributes.atime;
+ inode->i_mtime.tv_sec = (time64_t)new_op->
+ downcall.resp.getattr.attributes.mtime;
+ inode->i_ctime.tv_sec = (time64_t)new_op->
+ downcall.resp.getattr.attributes.ctime;
+ inode->i_atime.tv_nsec = 0;
+ inode->i_mtime.tv_nsec = 0;
+ inode->i_ctime.tv_nsec = 0;
+
+ /* special case: mark the root inode as sticky */
+ inode->i_mode = type | (is_root_handle(inode) ? S_ISVTX : 0) |
+ orangefs_inode_perms(&new_op->downcall.resp.getattr.attributes);
+
+ orangefs_inode->getattr_time = jiffies +
+ orangefs_getattr_timeout_msecs*HZ/1000;
+ if (request_mask & STATX_SIZE || new)
+ orangefs_inode->getattr_mask = STATX_BASIC_STATS;
+ else
+ orangefs_inode->getattr_mask = STATX_BASIC_STATS & ~STATX_SIZE;
+ ret = 0;
+out:
+ op_release(new_op);
+ return ret;
+}
+
+int orangefs_inode_check_changed(struct inode *inode)
+{
+ struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
+ struct orangefs_kernel_op_s *new_op;
+ int ret;
+
+ gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
+ get_khandle_from_ino(inode));
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
+ if (!new_op)
+ return -ENOMEM;
+ new_op->upcall.req.getattr.refn = orangefs_inode->refn;
+ new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_TYPE |
+ ORANGEFS_ATTR_SYS_LNK_TARGET;
+
+ ret = service_operation(new_op, __func__,
+ get_interruptible_flag(inode));
+ if (ret != 0)
+ goto out;
+
+ ret = orangefs_inode_is_stale(inode,
+ &new_op->downcall.resp.getattr.attributes,
+ new_op->downcall.resp.getattr.link_target);
+out:
+ op_release(new_op);
+ return ret;
+}
+
+/*
+ * issues a orangefs setattr request to make sure the new attribute values
+ * take effect if successful. returns 0 on success; -errno otherwise
+ */
+int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr)
+{
+ struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
+ struct orangefs_kernel_op_s *new_op;
+ int ret;
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_SETATTR);
+ if (!new_op)
+ return -ENOMEM;
+
+ new_op->upcall.req.setattr.refn = orangefs_inode->refn;
+ ret = copy_attributes_from_inode(inode,
+ &new_op->upcall.req.setattr.attributes,
+ iattr);
+ if (ret >= 0) {
+ ret = service_operation(new_op, __func__,
+ get_interruptible_flag(inode));
+
+ gossip_debug(GOSSIP_UTILS_DEBUG,
+ "orangefs_inode_setattr: returning %d\n",
+ ret);
+ }
+
+ op_release(new_op);
+
+ if (ret == 0)
+ orangefs_inode->getattr_time = jiffies - 1;
+
+ return ret;
+}
+
+/*
+ * The following is a very dirty hack that is now a permanent part of the
+ * ORANGEFS protocol. See protocol.h for more error definitions.
+ */
+
+/* The order matches include/orangefs-types.h in the OrangeFS source. */
+static int PINT_errno_mapping[] = {
+ 0, EPERM, ENOENT, EINTR, EIO, ENXIO, EBADF, EAGAIN, ENOMEM,
+ EFAULT, EBUSY, EEXIST, ENODEV, ENOTDIR, EISDIR, EINVAL, EMFILE,
+ EFBIG, ENOSPC, EROFS, EMLINK, EPIPE, EDEADLK, ENAMETOOLONG,
+ ENOLCK, ENOSYS, ENOTEMPTY, ELOOP, EWOULDBLOCK, ENOMSG, EUNATCH,
+ EBADR, EDEADLOCK, ENODATA, ETIME, ENONET, EREMOTE, ECOMM,
+ EPROTO, EBADMSG, EOVERFLOW, ERESTART, EMSGSIZE, EPROTOTYPE,
+ ENOPROTOOPT, EPROTONOSUPPORT, EOPNOTSUPP, EADDRINUSE,
+ EADDRNOTAVAIL, ENETDOWN, ENETUNREACH, ENETRESET, ENOBUFS,
+ ETIMEDOUT, ECONNREFUSED, EHOSTDOWN, EHOSTUNREACH, EALREADY,
+ EACCES, ECONNRESET, ERANGE
+};
+
+int orangefs_normalize_to_errno(__s32 error_code)
+{
+ __u32 i;
+
+ /* Success */
+ if (error_code == 0) {
+ return 0;
+ /*
+ * This shouldn't ever happen. If it does it should be fixed on the
+ * server.
+ */
+ } else if (error_code > 0) {
+ gossip_err("orangefs: error status received.\n");
+ gossip_err("orangefs: assuming error code is inverted.\n");
+ error_code = -error_code;
+ }
+
+ /*
+ * XXX: This is very bad since error codes from ORANGEFS may not be
+ * suitable for return into userspace.
+ */
+
+ /*
+ * Convert ORANGEFS error values into errno values suitable for return
+ * from the kernel.
+ */
+ if ((-error_code) & ORANGEFS_NON_ERRNO_ERROR_BIT) {
+ if (((-error_code) &
+ (ORANGEFS_ERROR_NUMBER_BITS|ORANGEFS_NON_ERRNO_ERROR_BIT|
+ ORANGEFS_ERROR_BIT)) == ORANGEFS_ECANCEL) {
+ /*
+ * cancellation error codes generally correspond to
+ * a timeout from the client's perspective
+ */
+ error_code = -ETIMEDOUT;
+ } else {
+ /* assume a default error code */
+ gossip_err("%s: bad error code :%d:.\n",
+ __func__,
+ error_code);
+ error_code = -EINVAL;
+ }
+
+ /* Convert ORANGEFS encoded errno values into regular errno values. */
+ } else if ((-error_code) & ORANGEFS_ERROR_BIT) {
+ i = (-error_code) & ~(ORANGEFS_ERROR_BIT|ORANGEFS_ERROR_CLASS_BITS);
+ if (i < ARRAY_SIZE(PINT_errno_mapping))
+ error_code = -PINT_errno_mapping[i];
+ else
+ error_code = -EINVAL;
+
+ /*
+ * Only ORANGEFS protocol error codes should ever come here. Otherwise
+ * there is a bug somewhere.
+ */
+ } else {
+ gossip_err("%s: unknown error code.\n", __func__);
+ error_code = -EINVAL;
+ }
+ return error_code;
+}
+
+#define NUM_MODES 11
+__s32 ORANGEFS_util_translate_mode(int mode)
+{
+ int ret = 0;
+ int i = 0;
+ static int modes[NUM_MODES] = {
+ S_IXOTH, S_IWOTH, S_IROTH,
+ S_IXGRP, S_IWGRP, S_IRGRP,
+ S_IXUSR, S_IWUSR, S_IRUSR,
+ S_ISGID, S_ISUID
+ };
+ static int orangefs_modes[NUM_MODES] = {
+ ORANGEFS_O_EXECUTE, ORANGEFS_O_WRITE, ORANGEFS_O_READ,
+ ORANGEFS_G_EXECUTE, ORANGEFS_G_WRITE, ORANGEFS_G_READ,
+ ORANGEFS_U_EXECUTE, ORANGEFS_U_WRITE, ORANGEFS_U_READ,
+ ORANGEFS_G_SGID, ORANGEFS_U_SUID
+ };
+
+ for (i = 0; i < NUM_MODES; i++)
+ if (mode & modes[i])
+ ret |= orangefs_modes[i];
+
+ return ret;
+}
+#undef NUM_MODES