Merge "Include linux/fsverity.h and remove inlined definition" am: a9170837...

#include <errno.h>

#include <fcntl.h>

#include <linux/fsverity.h>

#include <string.h>

#include <sys/ioctl.h>

#include <sys/stat.h>

#include <android-base/unique_fd.h>

// TODO(112037636): Always include once fsverity.h is upstreamed.

#if __has_include(<linux/fsverity.h>)

#include <linux/fsverity.h>

#else

#include <linux/limits.h>

#include <linux/ioctl.h>

#include <linux/types.h>

#define FS_VERITY_HASH_ALG_SHA256	1

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

const int kSha256Bytes = 32;

namespace android {