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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* fs-verity user API
*
* These ioctls can be used on filesystems that support fs-verity. See the
* "User API" section of Documentation/filesystems/fsverity.rst.
*
* Copyright 2019 Google LLC
*/
#ifndef _UAPI_LINUX_FSVERITY_H
#define _UAPI_LINUX_FSVERITY_H
#include <linux/ioctl.h>
#include <linux/types.h>
#define FS_VERITY_HASH_ALG_SHA256 1
#define FS_VERITY_HASH_ALG_SHA512 2
struct fsverity_enable_arg {
__u32 version;
__u32 hash_algorithm;
__u32 block_size;
__u32 salt_size;
__u64 salt_ptr;
__u32 sig_size;
__u32 __reserved1;
__u64 sig_ptr;
__u64 __reserved2[11];
};
struct fsverity_digest {
__u16 digest_algorithm;
__u16 digest_size; /* input/output */
__u8 digest[];
};
#define FS_IOC_ENABLE_VERITY _IOW('f', 133, struct fsverity_enable_arg)
#define FS_IOC_MEASURE_VERITY _IOWR('f', 134, struct fsverity_digest)
#endif /* _UAPI_LINUX_FSVERITY_H */