From bfcf6d04f8ee817b2cb7c238e0a14392a3245f45 Mon Sep 17 00:00:00 2001 From: Allison Karlitskaya Date: Tue, 26 Nov 2024 16:23:31 +0100 Subject: [PATCH] btrfs: handle FS_IOC_READ_VERITY_METADATA ioctl Commit 146054090b08 ("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 Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/ioctl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 4d9305fa37a8c..baecb19404ad8 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -5308,6 +5308,8 @@ long btrfs_ioctl(struct file *file, unsigned int return fsverity_ioctl_enable(file, (const void __user *)argp); case FS_IOC_MEASURE_VERITY: return fsverity_ioctl_measure(file, argp); + case FS_IOC_READ_VERITY_METADATA: + return fsverity_ioctl_read_metadata(file, argp); case BTRFS_IOC_ENCODED_READ: return btrfs_ioctl_encoded_read(file, argp, false); case BTRFS_IOC_ENCODED_WRITE: -- 2.39.5