btrfs: return EPERM upon rmdir on a subvolume
A subvolume cannot be deleted via rmdir, but the error code ENOTEMPTY
is confusing. Return EPERM instead, as this is not permitted.
Signed-off-by: David Sterba <dsterba@suse.cz>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d41e467..1c50f7c 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3200,9 +3200,10 @@
struct btrfs_trans_handle *trans;
unsigned long nr = 0;
- if (inode->i_size > BTRFS_EMPTY_DIR_SIZE ||
- btrfs_ino(inode) == BTRFS_FIRST_FREE_OBJECTID)
+ if (inode->i_size > BTRFS_EMPTY_DIR_SIZE)
return -ENOTEMPTY;
+ if (btrfs_ino(inode) == BTRFS_FIRST_FREE_OBJECTID)
+ return -EPERM;
trans = __unlink_start_trans(dir, dentry);
if (IS_ERR(trans))