diff options
| author | Qu Wenruo <wqu@suse.com> | 2024-01-10 08:58:26 +1030 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-31 16:17:07 -0800 |
| commit | 52e02f26d01a61d598bb5b9ce3d336562b4e0b5a (patch) | |
| tree | 3cdf434b4e1fb46829e3ee6202e5eb48a0e45c97 /include/uapi | |
| parent | 86aff7c5f7c6722041545825162dcf1b30bbeff2 (diff) | |
btrfs: defrag: reject unknown flags of btrfs_ioctl_defrag_range_args
commit 173431b274a9a54fc10b273b46e67f46bcf62d2e upstream.
Add extra sanity check for btrfs_ioctl_defrag_range_args::flags.
This is not really to enhance fuzzing tests, but as a preparation for
future expansion on btrfs_ioctl_defrag_range_args.
In the future we're going to add new members, allowing more fine tuning
for btrfs defrag. Without the -ENONOTSUPP error, there would be no way
to detect if the kernel supports those new defrag features.
CC: stable@vger.kernel.org # 4.14+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/btrfs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index d4d4fa0bb362..24b54635bae9 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -585,6 +585,9 @@ struct btrfs_ioctl_clone_range_args { */ #define BTRFS_DEFRAG_RANGE_COMPRESS 1 #define BTRFS_DEFRAG_RANGE_START_IO 2 +#define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \ + BTRFS_DEFRAG_RANGE_START_IO) + struct btrfs_ioctl_defrag_range_args { /* start of the defrag operation */ __u64 start; |