sys/linux/fsverity.txt

# Copyright 2019 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

include <uapi/linux/fs.h>
include <uapi/linux/fsverity.h>

ioctl$FS_IOC_ENABLE_VERITY(fd fd, cmd const[FS_IOC_ENABLE_VERITY])
ioctl$FS_IOC_MEASURE_VERITY(fd fd, cmd const[FS_IOC_MEASURE_VERITY], arg ptr[inout, fsverity_digest])

fsverity_digest_algorithm_flags = FS_VERITY_ALG_SHA256, FS_VERITY_ALG_SHA512, FS_VERITY_ALG_CRC32C

fsverity_digest {
	digest_algorithm	flags[fsverity_digest_algorithm_flags, int16]
	digest_size		len[digest, int16]
	digest			array[int8]
}