btrfs: handle FS_IOC_READ_VERITY_METADATA ioctl

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Commit 146054090b ("btrfs: initial fsverity support") introduced
fs-verity support for btrfs, but didn't add support for
FS_IOC_READ_VERITY_METADATA to directly query the Merkle tree,
descriptor and signature blocks for fs-verity enabled files.

Add the (trival) implementation: we just need to wire it through to the
fs-verity code, the same way as is done in the other two filesystems
which support this ioctl (ext4, f2fs). The fs-verity code already has
access to the required data.

This is also safe to backport to older stable trees (5.15+) if needed.

Signed-off-by: Allison Karlitskaya <allison.karlitskaya@redhat.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Allison Karlitskaya 2024-11-26 16:23:31 +01:00 • committed by David Sterba

parent d0ad40d730

commit bfcf6d04f8

1 changed files with 2 additions and 0 deletions

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fs/btrfs/ioctl.c

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