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authorMiklos Szeredi <mszeredi@suse.cz>2014-07-23 15:15:33 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2014-08-07 14:40:09 -0400
commit3b69ff51d087d265aa4af3a532fc4f20bf33e718 (patch)
tree961659a736ae216eee0684c26c0dca8f6c92323f /mm/shmem.c
parent80ace85c915d0f41016f82917218997b72431258 (diff)
downloadlinux-3b69ff51d087d265aa4af3a532fc4f20bf33e718.tar.bz2
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/shmem.c')
-rw-r--r--mm/shmem.c7
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