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# 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.
# Reference: https://www.kernel.org/doc/html/latest/filesystems/fsverity.html#user-api
include <uapi/linux/fs.h>
include <uapi/linux/fsverity.h>
ioctl$FS_IOC_ENABLE_VERITY(fd fd, cmd const[FS_IOC_ENABLE_VERITY], arg ptr[in, fsverity_enable_arg])
ioctl$FS_IOC_MEASURE_VERITY(fd fd, cmd const[FS_IOC_MEASURE_VERITY], arg ptr[inout, fsverity_digest])
ioctl$FS_IOC_READ_VERITY_METADATA(fd fd, cmd const[FS_IOC_READ_VERITY_METADATA], arg ptr[in, fsverity_read_metadata_arg])
fsverity_hash_alg = FS_VERITY_HASH_ALG_SHA256, FS_VERITY_HASH_ALG_SHA512
fsverity_enable_arg {
version const[1, int32]
hash_algorithm flags[fsverity_hash_alg, int32]
block_size const[4096, int32]
salt_size len[salt_ptr, int32]
salt_ptr ptr64[in, array[int8]]
sig_size len[sig_ptr, int32]
reserved1 const[0, int32]
sig_ptr ptr64[in, array[int8]]
reserved2 array[const[0, int64], 11]
}
fsverity_digest {
digest_algorithm flags[fsverity_hash_alg, int16]
digest_size len[digest, int16]
digest array[int8]
}
fsverity_metadata_type = FS_VERITY_METADATA_TYPE_MERKLE_TREE, FS_VERITY_METADATA_TYPE_DESCRIPTOR, FS_VERITY_METADATA_TYPE_SIGNATURE
fsverity_read_metadata_arg {
metadata_type flags[fsverity_metadata_type, int64]
offset int64
length len[buf_ptr, int64]
buf_ptr ptr64[out, array[int8]]
reserved const[0, int64]
}
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