diff options
| -rw-r--r-- | Documentation/filesystems/Locking | 6 | ||||
| -rw-r--r-- | Documentation/filesystems/directory-locking | 2 | ||||
| -rw-r--r-- | Documentation/filesystems/vfs.txt | 9 | ||||
| -rw-r--r-- | fs/cachefiles/namei.c | 3 | ||||
| -rw-r--r-- | fs/namei.c | 15 | ||||
| -rw-r--r-- | include/linux/fs.h | 2 | ||||
| -rw-r--r-- | security/tomoyo/realpath.c | 4 |
7 files changed, 10 insertions, 31 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index d30fb2cb5066..da320bc08b9e 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -50,8 +50,6 @@ prototypes: int (*mkdir) (struct inode *,struct dentry *,umode_t); int (*rmdir) (struct inode *,struct dentry *); int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t); - int (*rename) (struct inode *, struct dentry *, - struct inode *, struct dentry *); int (*rename2) (struct inode *, struct dentry *, struct inode *, struct dentry *, unsigned int); int (*readlink) (struct dentry *, char __user *,int); @@ -83,7 +81,6 @@ symlink: yes mkdir: yes unlink: yes (both) rmdir: yes (both) (see below) -rename: yes (all) (see below) rename2: yes (all) (see below) readlink: no get_link: no @@ -102,8 +99,7 @@ tmpfile: no Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on victim. - cross-directory ->rename() and rename2() has (per-superblock) -->s_vfs_rename_sem. + cross-directory ->rename2() has (per-superblock) ->s_vfs_rename_sem. See Documentation/filesystems/directory-locking for more detailed discussion of the locking scheme for directory operations. diff --git a/Documentation/filesystems/directory-locking b/Documentation/filesystems/directory-locking index c314badbcfc6..4e32cb961e5b 100644 --- a/Documentation/filesystems/directory-locking +++ b/Documentation/filesystems/directory-locking @@ -19,7 +19,7 @@ locks victim and calls the method. Locks are exclusive. 4) rename() that is _not_ cross-directory. Locking rules: caller locks the parent and finds source and target. In case of exchange (with -RENAME_EXCHANGE in rename2() flags argument) lock both. In any case, +RENAME_EXCHANGE in flags argument) lock both. In any case, if the target already exists, lock it. If the source is a non-directory, lock it. If we need to lock both, lock them in inode pointer order. Then call the method. All locks are exclusive. diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index 9ace359d6cc5..c641e0c37a07 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -345,8 +345,6 @@ struct inode_operations { int (*mkdir) (struct inode *,struct dentry *,umode_t); int (*rmdir) (struct inode *,struct dentry *); int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t); - int (*rename) (struct inode *, struct dentry *, - struct inode *, struct dentry *); int (*rename2) (struct inode *, struct dentry *, struct inode *, struct dentry *, unsigned int); int (*readlink) (struct dentry *, char __user *,int); @@ -416,11 +414,8 @@ otherwise noted. rename: called by the rename(2) system call to rename the object to have the parent and name given by the second inode and dentry. - rename2: this has an additional flags argument compared to rename. - If no flags are supported by the filesystem then this method - need not be implemented. If some flags are supported then the - filesystem must return -EINVAL for any unsupported or unknown - flags. Currently the following flags are implemented: + The filesystem must return -EINVAL for any unsupported or + unknown flags. Currently the following flags are implemented: (1) RENAME_NOREPLACE: this flag indicates that if the target of the rename exists the rename should fail with -EEXIST instead of replacing the target. The VFS already checks for diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index 3f7c2cd41f8f..02e1507812de 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -804,8 +804,7 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, !d_backing_inode(subdir)->i_op->lookup || !d_backing_inode(subdir)->i_op->mkdir || !d_backing_inode(subdir)->i_op->create || - (!d_backing_inode(subdir)->i_op->rename && - !d_backing_inode(subdir)->i_op->rename2) || + !d_backing_inode(subdir)->i_op->rename2 || !d_backing_inode(subdir)->i_op->rmdir || !d_backing_inode(subdir)->i_op->unlink) goto check_error; diff --git a/fs/namei.c b/fs/namei.c index adb04146df09..02803bd6cbad 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -4369,12 +4369,9 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (error) return error; - if (!old_dir->i_op->rename && !old_dir->i_op->rename2) + if (!old_dir->i_op->rename2) return -EPERM; - if (flags && !old_dir->i_op->rename2) - return -EINVAL; - /* * If we are going to change the parent - check write permissions, * we'll need to flip '..'. @@ -4428,14 +4425,8 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (error) goto out; } - if (!old_dir->i_op->rename2) { - error = old_dir->i_op->rename(old_dir, old_dentry, - new_dir, new_dentry); - } else { - WARN_ON(old_dir->i_op->rename != NULL); - error = old_dir->i_op->rename2(old_dir, old_dentry, - new_dir, new_dentry, flags); - } + error = old_dir->i_op->rename2(old_dir, old_dentry, + new_dir, new_dentry, flags); if (error) goto out; diff --git a/include/linux/fs.h b/include/linux/fs.h index 2bd67545fdf8..6b14ceba4f20 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1732,8 +1732,6 @@ struct inode_operations { int (*mkdir) (struct inode *,struct dentry *,umode_t); int (*rmdir) (struct inode *,struct dentry *); int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t); - int (*rename) (struct inode *, struct dentry *, - struct inode *, struct dentry *); int (*rename2) (struct inode *, struct dentry *, struct inode *, struct dentry *, unsigned int); int (*setattr) (struct dentry *, struct iattr *); diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c index 5077f1968841..38bcdbc06bb2 100644 --- a/security/tomoyo/realpath.c +++ b/security/tomoyo/realpath.c @@ -173,7 +173,7 @@ static char *tomoyo_get_local_path(struct dentry *dentry, char * const buffer, * Use filesystem name if filesystem does not support rename() * operation. */ - if (!inode->i_op->rename && !inode->i_op->rename2) + if (!inode->i_op->rename2) goto prepend_filesystem_name; } /* Prepend device name. */ @@ -283,7 +283,7 @@ char *tomoyo_realpath_from_path(const struct path *path) * or dentry without vfsmount. */ if (!path->mnt || - (!inode->i_op->rename && !inode->i_op->rename2)) + (!inode->i_op->rename2)) pos = tomoyo_get_local_path(path->dentry, buf, buf_len - 1); /* Get absolute name for the rest. */ |