[fio.git] / verify.c

/*
 * IO verification helpers
 */
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <assert.h>

#include "fio.h"

#include "md5.h"
#include "crc64.h"
#include "crc32.h"
#include "crc16.h"
#include "crc7.h"
#include "sha256.h"
#include "sha512.h"

static void fill_random_bytes(struct thread_data *td, void *p, unsigned int len)
{
	unsigned int todo;
	int r;

	while (len) {
		r = os_random_long(&td->verify_state);

		/*
		 * lrand48_r seems to be broken and only fill the bottom
		 * 32-bits, even on 64-bit archs with 64-bit longs
		 */
		todo = sizeof(r);
		if (todo > len)
			todo = len;

		memcpy(p, &r, todo);

		len -= todo;
		p += todo;
	}
}

static void fill_pattern(struct thread_data *td, void *p, unsigned int len)
{
	switch (td->o.verify_pattern_bytes) {
	case 0:
		fill_random_bytes(td, p, len);
		break;
	case 1:
		memset(p, td->o.verify_pattern, len);
		break;
	case 2:
	case 3:
	case 4: {
		unsigned int pattern = td->o.verify_pattern;
		unsigned int i = 0;
		unsigned char c1, c2, c3, c4;
		unsigned char *b = p;

		c1 = pattern & 0xff;
		pattern >>= 8;
		c2 = pattern & 0xff;
		pattern >>= 8;
		c3 = pattern & 0xff;
		pattern >>= 8;
		c4 = pattern & 0xff;

		while (i < len) {
			b[i++] = c1;
			if (i == len)
				break;
			b[i++] = c2;
			if (td->o.verify_pattern_bytes == 2 || i == len)
				continue;
			b[i++] = c3;
			if (td->o.verify_pattern_bytes == 3 || i == len)
				continue;
			b[i++] = c4;
		}
		break;
		}
	}
}

static void memswp(void* buf1, void* buf2, unsigned int len)
{
	struct verify_header swap;

	memcpy(&swap, buf1, len);
	memcpy(buf1, buf2, len);
	memcpy(buf2, &swap, len);
}

static void hexdump(void *buffer, int len)
{
	unsigned char *p = buffer;
	int i;

	for (i = 0; i < len; i++)
		log_info("%02x", p[i]);
	log_info("\n");
}

/*
 * Return data area 'header_num'
 */
static inline void *io_u_verify_off(struct verify_header *hdr,
				    struct io_u *io_u,
				    unsigned char header_num)
{
	return io_u->buf + sizeof(*hdr) + header_num * hdr->len;
}

static int verify_io_u_sha512(struct verify_header *hdr, struct io_u *io_u,
			      unsigned int header_num)
{
	void *p = io_u_verify_off(hdr, io_u, header_num);
	uint8_t sha512[128];
	struct sha512_ctx sha512_ctx = {
		.buf = sha512,
	};

	sha512_init(&sha512_ctx);
	sha512_update(&sha512_ctx, p, hdr->len - sizeof(*hdr));

	if (memcmp(hdr->sha512, sha512_ctx.buf, sizeof(sha512))) {
		log_err("sha512: verify failed at %llu/%u\n",
		              io_u->offset + header_num * hdr->len,
		              hdr->len);
		hexdump(hdr->sha512, sizeof(hdr->sha512));
		hexdump(sha512_ctx.buf, sizeof(sha512));
		return 1;
	}

	return 0;
}

static int verify_io_u_sha256(struct verify_header *hdr, struct io_u *io_u,
			      unsigned int header_num)
{
	void *p = io_u_verify_off(hdr, io_u, header_num);
	uint8_t sha256[128];
	struct sha256_ctx sha256_ctx = {
		.buf = sha256,
	};

	sha256_init(&sha256_ctx);
	sha256_update(&sha256_ctx, p, hdr->len - sizeof(*hdr));

	if (memcmp(hdr->sha256, sha256_ctx.buf, sizeof(sha256))) {
		log_err("sha256: verify failed at %llu/%u\n",
		              io_u->offset + header_num * hdr->len,
		              hdr->len);
		hexdump(hdr->sha256, sizeof(hdr->sha256));
		hexdump(sha256_ctx.buf, sizeof(sha256));
		return 1;
	}

	return 0;
}

static int verify_io_u_crc7(struct verify_header *hdr, struct io_u *io_u,
                            unsigned char header_num)
{
	void *p = io_u_verify_off(hdr, io_u, header_num);
	unsigned char c;

	c = crc7(p, hdr->len - sizeof(*hdr));

	if (c != hdr->crc7) {
		log_err("crc7: verify failed at %llu/%u\n",
		                io_u->offset + header_num * hdr->len,
				hdr->len);
		log_err("crc7: wanted %x, got %x\n", hdr->crc7, c);
		return 1;
	}

	return 0;
}

static int verify_io_u_crc16(struct verify_header *hdr, struct io_u *io_u,
                             unsigned int header_num)
{
	void *p = io_u_verify_off(hdr, io_u, header_num);
	unsigned short c;

	c = crc16(p, hdr->len - sizeof(*hdr));

	if (c != hdr->crc16) {
		log_err("crc16: verify failed at %llu/%u\n",
		                io_u->offset + header_num * hdr->len,
				hdr->len);
		log_err("crc16: wanted %x, got %x\n", hdr->crc16, c);
		return 1;
	}

	return 0;
}

static int verify_io_u_crc64(struct verify_header *hdr, struct io_u *io_u,
                             unsigned int header_num)
{
	void *p = io_u_verify_off(hdr, io_u, header_num);
	unsigned long long c;

	c = crc64(p, hdr->len - sizeof(*hdr));

	if (c != hdr->crc64) {
		log_err("crc64: verify failed at %llu/%u\n",
				io_u->offset + header_num * hdr->len,
				hdr->len);
		log_err("crc64: wanted %llx, got %llx\n", hdr->crc64, c);
		return 1;
	}

	return 0;
}

static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u,
		             unsigned int header_num)
{
	void *p = io_u_verify_off(hdr, io_u, header_num);
	unsigned long c;

	c = crc32(p, hdr->len - sizeof(*hdr));

	if (c != hdr->crc32) {
		log_err("crc32: verify failed at %llu/%u\n",
		                io_u->offset + header_num * hdr->len,
				hdr->len);
		log_err("crc32: wanted %lx, got %lx\n", hdr->crc32, c);
		return 1;
	}

	return 0;
}

static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u,
		           unsigned int header_num)
{
	void *p = io_u_verify_off(hdr, io_u, header_num);
	uint32_t hash[MD5_HASH_WORDS];
	struct md5_ctx md5_ctx = {
		.hash = hash,
	};

	md5_init(&md5_ctx);
	md5_update(&md5_ctx, p, hdr->len - sizeof(*hdr));

	if (memcmp(hdr->md5_digest, md5_ctx.hash, sizeof(hash))) {
		log_err("md5: verify failed at %llu/%u\n",
		              io_u->offset + header_num * hdr->len,
		              hdr->len);
		hexdump(hdr->md5_digest, sizeof(hdr->md5_digest));
		hexdump(md5_ctx.hash, sizeof(hash));
		return 1;
	}

	return 0;
}

int verify_io_u(struct thread_data *td, struct io_u *io_u)
{
	struct verify_header *hdr;
	unsigned int hdr_inc, hdr_num = 0;
	void *p;
	int ret;

	if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
		return 0;

	hdr_inc = io_u->buflen;
	if (td->o.verify_interval)
		hdr_inc = td->o.verify_interval;

	for (p = io_u->buf; p < io_u->buf + io_u->buflen; p += hdr_inc) {
		if (td->o.verify_offset)
			memswp(p, p + td->o.verify_offset, sizeof(*hdr));

		hdr = p;

		if (hdr->fio_magic != FIO_HDR_MAGIC) {
			log_err("Bad verify header %x\n", hdr->fio_magic);
			return EIO;
		}

		switch (hdr->verify_type) {
		case VERIFY_MD5:
			ret = verify_io_u_md5(hdr, io_u, hdr_num);
			break;
		case VERIFY_CRC64:
			ret = verify_io_u_crc64(hdr, io_u, hdr_num);
			break;
		case VERIFY_CRC32:
			ret = verify_io_u_crc32(hdr, io_u, hdr_num);
			break;
		case VERIFY_CRC16:
			ret = verify_io_u_crc16(hdr, io_u, hdr_num);
			break;
		case VERIFY_CRC7:
			ret = verify_io_u_crc7(hdr, io_u, hdr_num);
			break;
		case VERIFY_SHA256:
			ret = verify_io_u_sha256(hdr, io_u, hdr_num);
			break;
		case VERIFY_SHA512:
			ret = verify_io_u_sha512(hdr, io_u, hdr_num);
			break;
		default:
			log_err("Bad verify type %u\n", hdr->verify_type);
			ret = 1;
		}
		hdr_num++;
	}

	return 0;
}

static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
{
	struct sha512_ctx sha512_ctx = {
		.buf = hdr->sha512,
	};

	sha512_init(&sha512_ctx);
	sha512_update(&sha512_ctx, p, len);
}

static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
{
	struct sha256_ctx sha256_ctx = {
		.buf = hdr->sha256,
	};

	sha256_init(&sha256_ctx);
	sha256_update(&sha256_ctx, p, len);
}

static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
{
	hdr->crc7 = crc7(p, len);
}

static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
{
	hdr->crc16 = crc16(p, len);
}

static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
{
	hdr->crc32 = crc32(p, len);
}

static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
{
	hdr->crc64 = crc64(p, len);
}

static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
{
	struct md5_ctx md5_ctx = {
		.hash = (uint32_t *) hdr->md5_digest,
	};

	md5_init(&md5_ctx);
	md5_update(&md5_ctx, p, len);
}

/*
 * fill body of io_u->buf with random data and add a header with the
 * crc32 or md5 sum of that data.
 */
void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
{
	struct verify_header *hdr;
	void *p = io_u->buf, *data;
	unsigned int hdr_inc, data_len;

	if (td->o.verify == VERIFY_NULL)
		return;

	fill_pattern(td, p, io_u->buflen);

	hdr_inc = io_u->buflen;
	if (td->o.verify_interval)
		hdr_inc = td->o.verify_interval;
	data_len = hdr_inc - sizeof(*hdr);

	for (;p < io_u->buf + io_u->buflen; p += hdr_inc) {
		hdr = p;

		hdr->fio_magic = FIO_HDR_MAGIC;
		hdr->verify_type = td->o.verify;
		hdr->len = hdr_inc;

		data = p + sizeof(*hdr);
		switch (td->o.verify) {
		case VERIFY_MD5:
			fill_md5(hdr, data, data_len);
			break;
		case VERIFY_CRC64:
			fill_crc64(hdr, data, data_len);
			break;
		case VERIFY_CRC32:
			fill_crc32(hdr, data, data_len);
			break;
		case VERIFY_CRC16:
			fill_crc16(hdr, data, data_len);
			break;
		case VERIFY_CRC7:
			fill_crc7(hdr, data, data_len);
			break;
		case VERIFY_SHA256:
			fill_sha256(hdr, data, data_len);
			break;
		case VERIFY_SHA512:
			fill_sha512(hdr, data, data_len);
			break;
		default:
			log_err("fio: bad verify type: %d\n", td->o.verify);
			assert(0);
		}
		if (td->o.verify_offset)
			memswp(p, p + td->o.verify_offset, sizeof(*hdr));
	}
}

int get_next_verify(struct thread_data *td, struct io_u *io_u)
{
	struct io_piece *ipo = NULL;

	/*
	 * this io_u is from a requeue, we already filled the offsets
	 */
	if (io_u->file)
		return 0;

	if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
		struct rb_node *n = rb_first(&td->io_hist_tree);

		ipo = rb_entry(n, struct io_piece, rb_node);
		rb_erase(n, &td->io_hist_tree);
	} else if (!list_empty(&td->io_hist_list)) {
		ipo = list_entry(td->io_hist_list.next, struct io_piece, list);
		list_del(&ipo->list);
	}

	if (ipo) {
		io_u->offset = ipo->offset;
		io_u->buflen = ipo->len;
		io_u->file = ipo->file;

		if ((io_u->file->flags & FIO_FILE_OPEN) == 0) {
			int r = td_io_open_file(td, io_u->file);

			if (r)
				return 1;
		}

		get_file(ipo->file);
		assert(io_u->file->flags & FIO_FILE_OPEN);
		io_u->ddir = DDIR_READ;
		io_u->xfer_buf = io_u->buf;
		io_u->xfer_buflen = io_u->buflen;
		free(ipo);
		return 0;
	}

	return 1;
}
Commit	Line	Data
e29d1b70 JA	1	/*
	2	* IO verification helpers
	3	*/
	4	#include <unistd.h>
	5	#include <fcntl.h>
	6	#include <string.h>
97af62ce	7	#include <assert.h>
e29d1b70 JA	8
e29d1b70 JA	9	#include "fio.h"
e29d1b70	10
cd14cc10 JA	11	#include "md5.h"
	12	#include "crc64.h"
	13	#include "crc32.h"
	14	#include "crc16.h"
	15	#include "crc7.h"
	16	#include "sha256.h"
	17	#include "sha512.h"
	18
90059d65	19	static void fill_random_bytes(struct thread_data td, void p, unsigned int len)
e29d1b70 JA	20	{
e29d1b70 JA	21	unsigned int todo;
4c5946c6	22	int r;
e29d1b70 JA	23
e29d1b70 JA	24	while (len) {
4c5946c6	25	r = os_random_long(&td->verify_state);
e29d1b70 JA	26
	27	/*
	28	* lrand48_r seems to be broken and only fill the bottom
	29	* 32-bits, even on 64-bit archs with 64-bit longs
	30	*/
	31	todo = sizeof(r);
	32	if (todo > len)
	33	todo = len;
	34
	35	memcpy(p, &r, todo);
	36
	37	len -= todo;
	38	p += todo;
	39	}
	40	}
	41
90059d65 JA	42	static void fill_pattern(struct thread_data td, void p, unsigned int len)
	43	{
	44	switch (td->o.verify_pattern_bytes) {
	45	case 0:
	46	fill_random_bytes(td, p, len);
	47	break;
	48	case 1:
	49	memset(p, td->o.verify_pattern, len);
	50	break;
	51	case 2:
	52	case 3:
	53	case 4: {
	54	unsigned int pattern = td->o.verify_pattern;
	55	unsigned int i = 0;
	56	unsigned char c1, c2, c3, c4;
	57	unsigned char *b = p;
	58
	59	c1 = pattern & 0xff;
	60	pattern >>= 8;
	61	c2 = pattern & 0xff;
	62	pattern >>= 8;
	63	c3 = pattern & 0xff;
	64	pattern >>= 8;
	65	c4 = pattern & 0xff;
	66
	67	while (i < len) {
	68	b[i++] = c1;
	69	if (i == len)
	70	break;
	71	b[i++] = c2;
	72	if (td->o.verify_pattern_bytes == 2 \|\| i == len)
	73	continue;
	74	b[i++] = c3;
	75	if (td->o.verify_pattern_bytes == 3 \|\| i == len)
	76	continue;
	77	b[i++] = c4;
	78	}
	79	break;
	80	}
	81	}
	82	}
	83
	84	static void memswp(void* buf1, void* buf2, unsigned int len)
546a9142 SL	85	{
546a9142 SL	86	struct verify_header swap;
90059d65	87
546a9142 SL	88	memcpy(&swap, buf1, len);
	89	memcpy(buf1, buf2, len);
	90	memcpy(buf2, &swap, len);
	91	}
	92
e29d1b70 JA	93	static void hexdump(void *buffer, int len)
	94	{
	95	unsigned char *p = buffer;
	96	int i;
	97
	98	for (i = 0; i < len; i++)
6d86144d JA	99	log_info("%02x", p[i]);
6d86144d JA	100	log_info("\n");
e29d1b70 JA	101	}
e29d1b70 JA	102
d9f2caf3 JA	103	/*
	104	* Return data area 'header_num'
	105	*/
	106	static inline void io_u_verify_off(struct verify_header hdr,
	107	struct io_u *io_u,
	108	unsigned char header_num)
	109	{
	110	return io_u->buf + sizeof(hdr) + header_num hdr->len;
	111	}
	112
cd14cc10 JA	113	static int verify_io_u_sha512(struct verify_header hdr, struct io_u io_u,
	114	unsigned int header_num)
	115	{
	116	void *p = io_u_verify_off(hdr, io_u, header_num);
	117	uint8_t sha512[128];
	118	struct sha512_ctx sha512_ctx = {
	119	.buf = sha512,
	120	};
	121
	122	sha512_init(&sha512_ctx);
	123	sha512_update(&sha512_ctx, p, hdr->len - sizeof(*hdr));
	124
	125	if (memcmp(hdr->sha512, sha512_ctx.buf, sizeof(sha512))) {
	126	log_err("sha512: verify failed at %llu/%u\n",
	127	io_u->offset + header_num * hdr->len,
	128	hdr->len);
	129	hexdump(hdr->sha512, sizeof(hdr->sha512));
	130	hexdump(sha512_ctx.buf, sizeof(sha512));
	131	return 1;
	132	}
	133
	134	return 0;
	135	}
	136
	137	static int verify_io_u_sha256(struct verify_header hdr, struct io_u io_u,
	138	unsigned int header_num)
	139	{
	140	void *p = io_u_verify_off(hdr, io_u, header_num);
	141	uint8_t sha256[128];
	142	struct sha256_ctx sha256_ctx = {
	143	.buf = sha256,
	144	};
	145
	146	sha256_init(&sha256_ctx);
	147	sha256_update(&sha256_ctx, p, hdr->len - sizeof(*hdr));
	148
	149	if (memcmp(hdr->sha256, sha256_ctx.buf, sizeof(sha256))) {
	150	log_err("sha256: verify failed at %llu/%u\n",
	151	io_u->offset + header_num * hdr->len,
	152	hdr->len);
	153	hexdump(hdr->sha256, sizeof(hdr->sha256));
	154	hexdump(sha256_ctx.buf, sizeof(sha256));
	155	return 1;
	156	}
	157
	158	return 0;
	159	}
	160
3f9f4e26 SL	161	static int verify_io_u_crc7(struct verify_header hdr, struct io_u io_u,
3f9f4e26 SL	162	unsigned char header_num)
1e154bdb	163	{
d9f2caf3	164	void *p = io_u_verify_off(hdr, io_u, header_num);
1e154bdb JA	165	unsigned char c;
1e154bdb JA	166
1e154bdb JA	167	c = crc7(p, hdr->len - sizeof(*hdr));
	168
	169	if (c != hdr->crc7) {
3f9f4e26 SL	170	log_err("crc7: verify failed at %llu/%u\n",
	171	io_u->offset + header_num * hdr->len,
	172	hdr->len);
1e154bdb JA	173	log_err("crc7: wanted %x, got %x\n", hdr->crc7, c);
	174	return 1;
	175	}
	176
	177	return 0;
	178	}
	179
3f9f4e26 SL	180	static int verify_io_u_crc16(struct verify_header hdr, struct io_u io_u,
3f9f4e26 SL	181	unsigned int header_num)
969f7ed3	182	{
d9f2caf3	183	void *p = io_u_verify_off(hdr, io_u, header_num);
969f7ed3 JA	184	unsigned short c;
969f7ed3 JA	185
969f7ed3 JA	186	c = crc16(p, hdr->len - sizeof(*hdr));
	187
	188	if (c != hdr->crc16) {
3f9f4e26 SL	189	log_err("crc16: verify failed at %llu/%u\n",
	190	io_u->offset + header_num * hdr->len,
	191	hdr->len);
1f24ea44	192	log_err("crc16: wanted %x, got %x\n", hdr->crc16, c);
969f7ed3 JA	193	return 1;
	194	}
	195
	196	return 0;
	197	}
	198
3f9f4e26 SL	199	static int verify_io_u_crc64(struct verify_header hdr, struct io_u io_u,
3f9f4e26 SL	200	unsigned int header_num)
d77a7af3	201	{
d9f2caf3	202	void *p = io_u_verify_off(hdr, io_u, header_num);
d77a7af3 JA	203	unsigned long long c;
	204
	205	c = crc64(p, hdr->len - sizeof(*hdr));
	206
	207	if (c != hdr->crc64) {
3f9f4e26 SL	208	log_err("crc64: verify failed at %llu/%u\n",
	209	io_u->offset + header_num * hdr->len,
	210	hdr->len);
d77a7af3 JA	211	log_err("crc64: wanted %llx, got %llx\n", hdr->crc64, c);
	212	return 1;
	213	}
	214
	215	return 0;
	216	}
	217
3f9f4e26 SL	218	static int verify_io_u_crc32(struct verify_header hdr, struct io_u io_u,
3f9f4e26 SL	219	unsigned int header_num)
e29d1b70	220	{
d9f2caf3	221	void *p = io_u_verify_off(hdr, io_u, header_num);
e29d1b70 JA	222	unsigned long c;
e29d1b70 JA	223
e29d1b70 JA	224	c = crc32(p, hdr->len - sizeof(*hdr));
	225
	226	if (c != hdr->crc32) {
3f9f4e26 SL	227	log_err("crc32: verify failed at %llu/%u\n",
	228	io_u->offset + header_num * hdr->len,
	229	hdr->len);
e29d1b70 JA	230	log_err("crc32: wanted %lx, got %lx\n", hdr->crc32, c);
	231	return 1;
	232	}
	233
	234	return 0;
	235	}
	236
3f9f4e26 SL	237	static int verify_io_u_md5(struct verify_header hdr, struct io_u io_u,
3f9f4e26 SL	238	unsigned int header_num)
e29d1b70	239	{
d9f2caf3	240	void *p = io_u_verify_off(hdr, io_u, header_num);
8c432325 JA	241	uint32_t hash[MD5_HASH_WORDS];
	242	struct md5_ctx md5_ctx = {
	243	.hash = hash,
	244	};
e29d1b70	245
61f821f1	246	md5_init(&md5_ctx);
e29d1b70 JA	247	md5_update(&md5_ctx, p, hdr->len - sizeof(*hdr));
e29d1b70 JA	248
c9b3fdf3	249	if (memcmp(hdr->md5_digest, md5_ctx.hash, sizeof(hash))) {
3f9f4e26 SL	250	log_err("md5: verify failed at %llu/%u\n",
	251	io_u->offset + header_num * hdr->len,
	252	hdr->len);
e29d1b70	253	hexdump(hdr->md5_digest, sizeof(hdr->md5_digest));
8c432325	254	hexdump(md5_ctx.hash, sizeof(hash));
e29d1b70 JA	255	return 1;
	256	}
	257
	258	return 0;
	259	}
	260
36690c9b	261	int verify_io_u(struct thread_data td, struct io_u io_u)
e29d1b70	262	{
3f9f4e26 SL	263	struct verify_header *hdr;
3f9f4e26 SL	264	unsigned int hdr_inc, hdr_num = 0;
95646108	265	void *p;
e29d1b70 JA	266	int ret;
e29d1b70 JA	267
1dcc0498	268	if (td->o.verify == VERIFY_NULL \|\| io_u->ddir != DDIR_READ)
36690c9b JA	269	return 0;
36690c9b JA	270
3f9f4e26	271	hdr_inc = io_u->buflen;
a59e170d JA	272	if (td->o.verify_interval)
a59e170d JA	273	hdr_inc = td->o.verify_interval;
e29d1b70	274
95646108	275	for (p = io_u->buf; p < io_u->buf + io_u->buflen; p += hdr_inc) {
a59e170d JA	276	if (td->o.verify_offset)
a59e170d JA	277	memswp(p, p + td->o.verify_offset, sizeof(*hdr));
546a9142	278
95646108	279	hdr = p;
e29d1b70	280
3f9f4e26 SL	281	if (hdr->fio_magic != FIO_HDR_MAGIC) {
	282	log_err("Bad verify header %x\n", hdr->fio_magic);
	283	return EIO;
	284	}
	285
	286	switch (hdr->verify_type) {
	287	case VERIFY_MD5:
	288	ret = verify_io_u_md5(hdr, io_u, hdr_num);
	289	break;
	290	case VERIFY_CRC64:
	291	ret = verify_io_u_crc64(hdr, io_u, hdr_num);
	292	break;
	293	case VERIFY_CRC32:
	294	ret = verify_io_u_crc32(hdr, io_u, hdr_num);
	295	break;
	296	case VERIFY_CRC16:
	297	ret = verify_io_u_crc16(hdr, io_u, hdr_num);
	298	break;
	299	case VERIFY_CRC7:
	300	ret = verify_io_u_crc7(hdr, io_u, hdr_num);
	301	break;
cd14cc10 JA	302	case VERIFY_SHA256:
	303	ret = verify_io_u_sha256(hdr, io_u, hdr_num);
	304	break;
	305	case VERIFY_SHA512:
	306	ret = verify_io_u_sha512(hdr, io_u, hdr_num);
	307	break;
3f9f4e26 SL	308	default:
	309	log_err("Bad verify type %u\n", hdr->verify_type);
	310	ret = 1;
	311	}
	312	hdr_num++;
	313	}
a7dfe862 JA	314
a7dfe862 JA	315	return 0;
e29d1b70 JA	316	}
e29d1b70 JA	317
cd14cc10 JA	318	static void fill_sha512(struct verify_header hdr, void p, unsigned int len)
	319	{
	320	struct sha512_ctx sha512_ctx = {
	321	.buf = hdr->sha512,
	322	};
	323
	324	sha512_init(&sha512_ctx);
	325	sha512_update(&sha512_ctx, p, len);
	326	}
	327
	328	static void fill_sha256(struct verify_header hdr, void p, unsigned int len)
	329	{
	330	struct sha256_ctx sha256_ctx = {
	331	.buf = hdr->sha256,
	332	};
	333
	334	sha256_init(&sha256_ctx);
	335	sha256_update(&sha256_ctx, p, len);
	336	}
	337
1e154bdb JA	338	static void fill_crc7(struct verify_header hdr, void p, unsigned int len)
	339	{
	340	hdr->crc7 = crc7(p, len);
	341	}
	342
969f7ed3 JA	343	static void fill_crc16(struct verify_header hdr, void p, unsigned int len)
	344	{
	345	hdr->crc16 = crc16(p, len);
	346	}
	347
e29d1b70 JA	348	static void fill_crc32(struct verify_header hdr, void p, unsigned int len)
	349	{
	350	hdr->crc32 = crc32(p, len);
	351	}
	352
d77a7af3 JA	353	static void fill_crc64(struct verify_header hdr, void p, unsigned int len)
	354	{
	355	hdr->crc64 = crc64(p, len);
	356	}
	357
e29d1b70 JA	358	static void fill_md5(struct verify_header hdr, void p, unsigned int len)
e29d1b70 JA	359	{
8c432325 JA	360	struct md5_ctx md5_ctx = {
	361	.hash = (uint32_t *) hdr->md5_digest,
	362	};
e29d1b70	363
61f821f1	364	md5_init(&md5_ctx);
e29d1b70	365	md5_update(&md5_ctx, p, len);
e29d1b70 JA	366	}
	367
	368	/*
	369	* fill body of io_u->buf with random data and add a header with the
	370	* crc32 or md5 sum of that data.
	371	*/
	372	void populate_verify_io_u(struct thread_data td, struct io_u io_u)
	373	{
baefa9be	374	struct verify_header *hdr;
95646108	375	void p = io_u->buf, data;
546a9142	376	unsigned int hdr_inc, data_len;
e29d1b70	377
9cc3d150 JA	378	if (td->o.verify == VERIFY_NULL)
	379	return;
	380
90059d65	381	fill_pattern(td, p, io_u->buflen);
546a9142 SL	382
546a9142 SL	383	hdr_inc = io_u->buflen;
a59e170d JA	384	if (td->o.verify_interval)
a59e170d JA	385	hdr_inc = td->o.verify_interval;
546a9142	386	data_len = hdr_inc - sizeof(*hdr);
baefa9be	387
95646108 JA	388	for (;p < io_u->buf + io_u->buflen; p += hdr_inc) {
95646108 JA	389	hdr = p;
3f9f4e26 SL	390
	391	hdr->fio_magic = FIO_HDR_MAGIC;
	392	hdr->verify_type = td->o.verify;
546a9142	393	hdr->len = hdr_inc;
3f9f4e26 SL	394
3f9f4e26 SL	395	data = p + sizeof(*hdr);
3f9f4e26 SL	396	switch (td->o.verify) {
	397	case VERIFY_MD5:
	398	fill_md5(hdr, data, data_len);
	399	break;
	400	case VERIFY_CRC64:
	401	fill_crc64(hdr, data, data_len);
	402	break;
	403	case VERIFY_CRC32:
	404	fill_crc32(hdr, data, data_len);
	405	break;
	406	case VERIFY_CRC16:
	407	fill_crc16(hdr, data, data_len);
	408	break;
	409	case VERIFY_CRC7:
	410	fill_crc7(hdr, data, data_len);
	411	break;
cd14cc10 JA	412	case VERIFY_SHA256:
	413	fill_sha256(hdr, data, data_len);
	414	break;
	415	case VERIFY_SHA512:
	416	fill_sha512(hdr, data, data_len);
	417	break;
3f9f4e26 SL	418	default:
	419	log_err("fio: bad verify type: %d\n", td->o.verify);
	420	assert(0);
	421	}
a59e170d JA	422	if (td->o.verify_offset)
a59e170d JA	423	memswp(p, p + td->o.verify_offset, sizeof(*hdr));
e29d1b70	424	}
e29d1b70 JA	425	}
	426
	427	int get_next_verify(struct thread_data td, struct io_u io_u)
	428	{
8de8f047	429	struct io_piece *ipo = NULL;
e29d1b70	430
d2d7fa53 JA	431	/*
	432	* this io_u is from a requeue, we already filled the offsets
	433	*/
	434	if (io_u->file)
	435	return 0;
	436
8de8f047 JA	437	if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
8de8f047 JA	438	struct rb_node *n = rb_first(&td->io_hist_tree);
e29d1b70	439
8de8f047	440	ipo = rb_entry(n, struct io_piece, rb_node);
4b87898e	441	rb_erase(n, &td->io_hist_tree);
8de8f047 JA	442	} else if (!list_empty(&td->io_hist_list)) {
	443	ipo = list_entry(td->io_hist_list.next, struct io_piece, list);
	444	list_del(&ipo->list);
	445	}
e29d1b70	446
8de8f047	447	if (ipo) {
e29d1b70 JA	448	io_u->offset = ipo->offset;
e29d1b70 JA	449	io_u->buflen = ipo->len;
36167d82	450	io_u->file = ipo->file;
97af62ce JA	451
	452	if ((io_u->file->flags & FIO_FILE_OPEN) == 0) {
	453	int r = td_io_open_file(td, io_u->file);
	454
	455	if (r)
	456	return 1;
	457	}
	458
	459	get_file(ipo->file);
	460	assert(io_u->file->flags & FIO_FILE_OPEN);
e29d1b70	461	io_u->ddir = DDIR_READ;
36167d82 JA	462	io_u->xfer_buf = io_u->buf;
36167d82 JA	463	io_u->xfer_buflen = io_u->buflen;
e29d1b70 JA	464	free(ipo);
	465	return 0;
	466	}
	467
	468	return 1;
	469	}