diff options
| -rw-r--r-- | fs/btrfs/ioctl.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index e9bdb8b783e5..05446f77f99b 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1333,6 +1333,12 @@ static noinline int btrfs_ioctl_snap_create_transid(struct file *file, goto out; } + if (name[0] == '.' && + (namelen == 1 || (name[1] == '.' && namelen == 2))) { + ret = -EEXIST; + goto out; + } + if (subvol) { ret = btrfs_mksubvol(&file->f_path, name, namelen, NULL, transid, readonly); |