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| author | Miklos Szeredi <mszeredi@suse.cz> | 2014-07-23 15:15:33 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-08-07 14:40:09 -0400 |
| commit | 3b69ff51d087d265aa4af3a532fc4f20bf33e718 (patch) | |
| tree | 961659a736ae216eee0684c26c0dca8f6c92323f /mm | |
| parent | 80ace85c915d0f41016f82917218997b72431258 (diff) | |
| download | lwn-3b69ff51d087d265aa4af3a532fc4f20bf33e718.tar.gz lwn-3b69ff51d087d265aa4af3a532fc4f20bf33e718.zip | |
shmem: support RENAME_NOREPLACE
Implement ->rename2 instead of ->rename.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/shmem.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index af68b15a8fc1..fe959181f995 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2054,11 +2054,14 @@ static int shmem_rmdir(struct inode *dir, struct dentry *dentry) * it exists so that the VFS layer correctly free's it when it * gets overwritten. */ -static int shmem_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry) +static int shmem_rename2(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry, unsigned int flags) { struct inode *inode = old_dentry->d_inode; int they_are_dirs = S_ISDIR(inode->i_mode); + if (flags & ~(RENAME_NOREPLACE)) + return -EINVAL; + if (!simple_empty(new_dentry)) return -ENOTEMPTY; @@ -2741,7 +2744,7 @@ static const struct inode_operations shmem_dir_inode_operations = { .mkdir = shmem_mkdir, .rmdir = shmem_rmdir, .mknod = shmem_mknod, - .rename = shmem_rename, + .rename2 = shmem_rename2, .tmpfile = shmem_tmpfile, #endif #ifdef CONFIG_TMPFS_XATTR |