diff options
| author | Qu Wenruo <wqu@suse.com> | 2024-01-10 08:58:26 +1030 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-23 08:24:52 +0100 |
| commit | 69a087625203b337949778a6d65bd1e75d750a14 (patch) | |
| tree | 008b3e044d6c9161c07e2f7ac24f201dfe3a026e /include/uapi | |
| parent | d0bf04c9654cff972535a854bd4ce3de0ca3ca00 (diff) | |
| download | linux-69a087625203b337949778a6d65bd1e75d750a14.tar.gz linux-69a087625203b337949778a6d65bd1e75d750a14.tar.bz2 linux-69a087625203b337949778a6d65bd1e75d750a14.zip | |
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 72cd9f61f054..140722320698 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -539,6 +539,9 @@ 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; |