[fio.git] / verify.c

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

#include "fio.h"

#include "crc/md5.h"
#include "crc/crc64.h"
#include "crc/crc32.h"
#include "crc/crc16.h"
#include "crc/crc7.h"
#include "crc/sha256.h"
#include "crc/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:
		dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
		fill_random_bytes(td, p, len);
		break;
	case 1:
		dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
		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;

		dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
					td->o.verify_pattern_bytes, len);

		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)
{
	char swap[200];

	assert(len <= sizeof(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");
}

/*
 * Prepare for seperation of verify_header and checksum header
 */
static inline unsigned int __hdr_size(int verify_type)
{
	unsigned int len;

	switch (verify_type) {
	case VERIFY_NONE:
	case VERIFY_NULL:
		len = 0;
		break;
	case VERIFY_MD5:
		len = sizeof(struct vhdr_md5);
		break;
	case VERIFY_CRC64:
		len = sizeof(struct vhdr_crc64);
		break;
	case VERIFY_CRC32:
		len = sizeof(struct vhdr_crc32);
		break;
	case VERIFY_CRC16:
		len = sizeof(struct vhdr_crc16);
		break;
	case VERIFY_CRC7:
		len = sizeof(struct vhdr_crc7);
		break;
	case VERIFY_SHA256:
		len = sizeof(struct vhdr_sha256);
		break;
	case VERIFY_SHA512:
		len = sizeof(struct vhdr_sha512);
		break;
	case VERIFY_META:
		len = sizeof(struct vhdr_meta);
		break;
	default:
		log_err("fio: unknown verify header!\n");
		assert(0);
	}

	return len + sizeof(struct verify_header);
}

static inline unsigned int hdr_size(struct verify_header *hdr)
{
	return __hdr_size(hdr->verify_type);
}

static void *hdr_priv(struct verify_header *hdr)
{
	void *priv = hdr;

	return priv + sizeof(struct verify_header);
}

/*
 * 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 + header_num * hdr->len + hdr_size(hdr);
}

static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
                            struct io_u *io_u, unsigned int header_num)
{
	struct vhdr_meta *vh = hdr_priv(hdr);

	dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);

	if (vh->offset != io_u->offset + header_num * td->o.verify_interval) {
		log_err("meta: verify failed at %llu/%u\n",
		              io_u->offset + header_num * hdr->len,
		              hdr->len);
		return EIO;
	}

	return 0;
}

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);
	struct vhdr_sha512 *vh = hdr_priv(hdr);
	uint8_t sha512[128];
	struct sha512_ctx sha512_ctx = {
		.buf = sha512,
	};

	dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", io_u, hdr->len);

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

	if (memcmp(vh->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(vh->sha512, sizeof(vh->sha512));
		hexdump(sha512_ctx.buf, sizeof(sha512));
		return EIO;
	}

	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);
	struct vhdr_sha256 *vh = hdr_priv(hdr);
	uint8_t sha256[128];
	struct sha256_ctx sha256_ctx = {
		.buf = sha256,
	};

	dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", io_u, hdr->len);

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

	if (memcmp(vh->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(vh->sha256, sizeof(vh->sha256));
		hexdump(sha256_ctx.buf, sizeof(sha256));
		return EIO;
	}

	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);
	struct vhdr_crc7 *vh = hdr_priv(hdr);
	unsigned char c;

	dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", io_u, hdr->len);

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

	if (c != vh->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", vh->crc7, c);
		return EIO;
	}

	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);
	struct vhdr_crc16 *vh = hdr_priv(hdr);
	unsigned short c;

	dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", io_u, hdr->len);

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

	if (c != vh->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", vh->crc16, c);
		return EIO;
	}

	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);
	struct vhdr_crc64 *vh = hdr_priv(hdr);
	unsigned long long c;

	dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", io_u, hdr->len);

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

	if (c != vh->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", (unsigned long long) vh->crc64, c);
		return EIO;
	}

	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);
	struct vhdr_crc32 *vh = hdr_priv(hdr);
	uint32_t c;

	dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", io_u, hdr->len);

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

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

	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);
	struct vhdr_md5 *vh = hdr_priv(hdr);
	uint32_t hash[MD5_HASH_WORDS];
	struct md5_ctx md5_ctx = {
		.hash = hash,
	};

	dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", io_u, hdr->len);

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

	if (memcmp(vh->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(vh->md5_digest, sizeof(vh->md5_digest));
		hexdump(md5_ctx.hash, sizeof(hash));
		return EIO;
	}

	return 0;
}

static unsigned int hweight8(unsigned int w)
{
	unsigned int res = w - ((w >> 1) & 0x55);

	res = (res & 0x33) + ((res >> 2) & 0x33);
	return (res + (res >> 4)) & 0x0F;
}

int verify_io_u_pattern(unsigned long pattern, unsigned long pattern_size,
                        char *buf, unsigned int len, unsigned int mod)
{
	unsigned int i;
	char split_pattern[4];

	for (i = 0; i < 4; i++) {
		split_pattern[i] = pattern & 0xff;
		pattern >>= 8;
	}

	for (i = 0; i < len; i++) {
		if (buf[i] != split_pattern[mod]) {
			unsigned int bits;

			bits = hweight8(buf[i] ^ split_pattern[mod]);
			log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
				buf[i], split_pattern[mod], bits);
			log_err("fio: bad pattern block offset %u\n", i);
			return EIO;
		}
		mod++;
		if (mod == pattern_size)
			mod = 0;
	}

	return 0;
}

int verify_io_u(struct thread_data *td, struct io_u *io_u)
{
	struct verify_header *hdr;
	unsigned int hdr_size, 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;

	ret = 0;
	for (p = io_u->buf; p < io_u->buf + io_u->buflen; p += hdr_inc, hdr_num++) {
		if (ret && td->o.verify_fatal) {
			td->terminate = 1;
			break;
		}
		hdr_size = __hdr_size(td->o.verify);
		if (td->o.verify_offset)
			memswp(p, p + td->o.verify_offset, hdr_size);
		hdr = p;

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

		if (td->o.verify_pattern_bytes) {
			dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
								io_u, hdr->len);
			ret = verify_io_u_pattern(td->o.verify_pattern,
			                          td->o.verify_pattern_bytes,
			                          p + hdr_size,
			                          hdr_inc - hdr_size,
			                          hdr_size % 4);
			if (ret)
				log_err("fio: verify failed at %llu/%u\n",
					io_u->offset + hdr_num * hdr->len,
					hdr->len);
			continue;
		}

		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;
		case VERIFY_META:
			ret = verify_io_u_meta(hdr, td, io_u, hdr_num);
			break;
		default:
			log_err("Bad verify type %u\n", hdr->verify_type);
			ret = EINVAL;
		}
	}

	return ret;
}

static void fill_meta(struct verify_header *hdr, struct thread_data *td,
                      struct io_u *io_u, unsigned int header_num)
{
	struct vhdr_meta *vh = hdr_priv(hdr);

	vh->thread = td->thread_number;

	vh->time_sec = io_u->start_time.tv_sec;
	vh->time_usec = io_u->start_time.tv_usec;

	vh->numberio = td->io_issues[DDIR_WRITE];

	vh->offset = io_u->offset + header_num * td->o.verify_interval;
}

static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
{
	struct vhdr_sha512 *vh = hdr_priv(hdr);
	struct sha512_ctx sha512_ctx = {
		.buf = vh->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 vhdr_sha256 *vh = hdr_priv(hdr);
	struct sha256_ctx sha256_ctx = {
		.buf = vh->sha256,
	};

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

static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
{
	struct vhdr_crc7 *vh = hdr_priv(hdr);

	vh->crc7 = crc7(p, len);
}

static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
{
	struct vhdr_crc16 *vh = hdr_priv(hdr);

	vh->crc16 = crc16(p, len);
}

static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
{
	struct vhdr_crc32 *vh = hdr_priv(hdr);

	vh->crc32 = crc32(p, len);
}

static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
{
	struct vhdr_crc64 *vh = hdr_priv(hdr);

	vh->crc64 = crc64(p, len);
}

static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
{
	struct vhdr_md5 *vh = hdr_priv(hdr);
	struct md5_ctx md5_ctx = {
		.hash = (uint32_t *) vh->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, header_num = 0;

	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;

	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_len = hdr_inc - hdr_size(hdr);

		data = p + hdr_size(hdr);
		switch (td->o.verify) {
		case VERIFY_MD5:
			dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
							io_u, hdr->len);
			fill_md5(hdr, data, data_len);
			break;
		case VERIFY_CRC64:
			dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
							io_u, hdr->len);
			fill_crc64(hdr, data, data_len);
			break;
		case VERIFY_CRC32:
			dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
							io_u, hdr->len);
			fill_crc32(hdr, data, data_len);
			break;
		case VERIFY_CRC16:
			dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
							io_u, hdr->len);
			fill_crc16(hdr, data, data_len);
			break;
		case VERIFY_CRC7:
			dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
							io_u, hdr->len);
			fill_crc7(hdr, data, data_len);
			break;
		case VERIFY_SHA256:
			dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
							io_u, hdr->len);
			fill_sha256(hdr, data, data_len);
			break;
		case VERIFY_SHA512:
			dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
							io_u, hdr->len);
			fill_sha512(hdr, data, data_len);
			break;
		case VERIFY_META:
			dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
							io_u, hdr->len);
			fill_meta(hdr, td, io_u, header_num);
			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, hdr_size(hdr));
		header_num++;
	}
}

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) {
				dprint(FD_VERIFY, "failed file %s open\n",
						io_u->file->file_name);
				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);
		dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
		return 0;
	}

	dprint(FD_VERIFY, "get_next_verify: empty\n");
	return 1;
}
Commit	Line	Data
	1	/*
	2	* IO verification helpers
	3	*/
	4	#include <unistd.h>
	5	#include <fcntl.h>
	6	#include <string.h>
	7	#include <assert.h>
	8
	9	#include "fio.h"
	10
	11	#include "crc/md5.h"
	12	#include "crc/crc64.h"
	13	#include "crc/crc32.h"
	14	#include "crc/crc16.h"
	15	#include "crc/crc7.h"
	16	#include "crc/sha256.h"
	17	#include "crc/sha512.h"
	18
	19	static void fill_random_bytes(struct thread_data td, void p, unsigned int len)
	20	{
	21	unsigned int todo;
	22	int r;
	23
	24	while (len) {
	25	r = os_random_long(&td->verify_state);
	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
	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	dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
	47	fill_random_bytes(td, p, len);
	48	break;
	49	case 1:
	50	dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
	51	memset(p, td->o.verify_pattern, len);
	52	break;
	53	case 2:
	54	case 3:
	55	case 4: {
	56	unsigned int pattern = td->o.verify_pattern;
	57	unsigned int i = 0;
	58	unsigned char c1, c2, c3, c4;
	59	unsigned char *b = p;
	60
	61	dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
	62	td->o.verify_pattern_bytes, len);
	63
	64	c1 = pattern & 0xff;
	65	pattern >>= 8;
	66	c2 = pattern & 0xff;
	67	pattern >>= 8;
	68	c3 = pattern & 0xff;
	69	pattern >>= 8;
	70	c4 = pattern & 0xff;
	71
	72	while (i < len) {
	73	b[i++] = c1;
	74	if (i == len)
	75	break;
	76	b[i++] = c2;
	77	if (td->o.verify_pattern_bytes == 2 \|\| i == len)
	78	continue;
	79	b[i++] = c3;
	80	if (td->o.verify_pattern_bytes == 3 \|\| i == len)
	81	continue;
	82	b[i++] = c4;
	83	}
	84	break;
	85	}
	86	}
	87	}
	88
	89	static void memswp(void buf1, void buf2, unsigned int len)
	90	{
	91	char swap[200];
	92
	93	assert(len <= sizeof(swap));
	94
	95	memcpy(&swap, buf1, len);
	96	memcpy(buf1, buf2, len);
	97	memcpy(buf2, &swap, len);
	98	}
	99
	100	static void hexdump(void *buffer, int len)
	101	{
	102	unsigned char *p = buffer;
	103	int i;
	104
	105	for (i = 0; i < len; i++)
	106	log_info("%02x", p[i]);
	107	log_info("\n");
	108	}
	109
	110	/*
	111	* Prepare for seperation of verify_header and checksum header
	112	*/
	113	static inline unsigned int __hdr_size(int verify_type)
	114	{
	115	unsigned int len;
	116
	117	switch (verify_type) {
	118	case VERIFY_NONE:
	119	case VERIFY_NULL:
	120	len = 0;
	121	break;
	122	case VERIFY_MD5:
	123	len = sizeof(struct vhdr_md5);
	124	break;
	125	case VERIFY_CRC64:
	126	len = sizeof(struct vhdr_crc64);
	127	break;
	128	case VERIFY_CRC32:
	129	len = sizeof(struct vhdr_crc32);
	130	break;
	131	case VERIFY_CRC16:
	132	len = sizeof(struct vhdr_crc16);
	133	break;
	134	case VERIFY_CRC7:
	135	len = sizeof(struct vhdr_crc7);
	136	break;
	137	case VERIFY_SHA256:
	138	len = sizeof(struct vhdr_sha256);
	139	break;
	140	case VERIFY_SHA512:
	141	len = sizeof(struct vhdr_sha512);
	142	break;
	143	case VERIFY_META:
	144	len = sizeof(struct vhdr_meta);
	145	break;
	146	default:
	147	log_err("fio: unknown verify header!\n");
	148	assert(0);
	149	}
	150
	151	return len + sizeof(struct verify_header);
	152	}
	153
	154	static inline unsigned int hdr_size(struct verify_header *hdr)
	155	{
	156	return __hdr_size(hdr->verify_type);
	157	}
	158
	159	static void hdr_priv(struct verify_header hdr)
	160	{
	161	void *priv = hdr;
	162
	163	return priv + sizeof(struct verify_header);
	164	}
	165
	166	/*
	167	* Return data area 'header_num'
	168	*/
	169	static inline void io_u_verify_off(struct verify_header hdr,
	170	struct io_u *io_u,
	171	unsigned char header_num)
	172	{
	173	return io_u->buf + header_num * hdr->len + hdr_size(hdr);
	174	}
	175
	176	static int verify_io_u_meta(struct verify_header hdr, struct thread_data td,
	177	struct io_u *io_u, unsigned int header_num)
	178	{
	179	struct vhdr_meta *vh = hdr_priv(hdr);
	180
	181	dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
	182
	183	if (vh->offset != io_u->offset + header_num * td->o.verify_interval) {
	184	log_err("meta: verify failed at %llu/%u\n",
	185	io_u->offset + header_num * hdr->len,
	186	hdr->len);
	187	return EIO;
	188	}
	189
	190	return 0;
	191	}
	192
	193	static int verify_io_u_sha512(struct verify_header hdr, struct io_u io_u,
	194	unsigned int header_num)
	195	{
	196	void *p = io_u_verify_off(hdr, io_u, header_num);
	197	struct vhdr_sha512 *vh = hdr_priv(hdr);
	198	uint8_t sha512[128];
	199	struct sha512_ctx sha512_ctx = {
	200	.buf = sha512,
	201	};
	202
	203	dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", io_u, hdr->len);
	204
	205	sha512_init(&sha512_ctx);
	206	sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
	207
	208	if (memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512))) {
	209	log_err("sha512: verify failed at %llu/%u\n",
	210	io_u->offset + header_num * hdr->len,
	211	hdr->len);
	212	hexdump(vh->sha512, sizeof(vh->sha512));
	213	hexdump(sha512_ctx.buf, sizeof(sha512));
	214	return EIO;
	215	}
	216
	217	return 0;
	218	}
	219
	220	static int verify_io_u_sha256(struct verify_header hdr, struct io_u io_u,
	221	unsigned int header_num)
	222	{
	223	void *p = io_u_verify_off(hdr, io_u, header_num);
	224	struct vhdr_sha256 *vh = hdr_priv(hdr);
	225	uint8_t sha256[128];
	226	struct sha256_ctx sha256_ctx = {
	227	.buf = sha256,
	228	};
	229
	230	dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", io_u, hdr->len);
	231
	232	sha256_init(&sha256_ctx);
	233	sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
	234
	235	if (memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256))) {
	236	log_err("sha256: verify failed at %llu/%u\n",
	237	io_u->offset + header_num * hdr->len,
	238	hdr->len);
	239	hexdump(vh->sha256, sizeof(vh->sha256));
	240	hexdump(sha256_ctx.buf, sizeof(sha256));
	241	return EIO;
	242	}
	243
	244	return 0;
	245	}
	246
	247	static int verify_io_u_crc7(struct verify_header hdr, struct io_u io_u,
	248	unsigned char header_num)
	249	{
	250	void *p = io_u_verify_off(hdr, io_u, header_num);
	251	struct vhdr_crc7 *vh = hdr_priv(hdr);
	252	unsigned char c;
	253
	254	dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", io_u, hdr->len);
	255
	256	c = crc7(p, hdr->len - hdr_size(hdr));
	257
	258	if (c != vh->crc7) {
	259	log_err("crc7: verify failed at %llu/%u\n",
	260	io_u->offset + header_num * hdr->len,
	261	hdr->len);
	262	log_err("crc7: wanted %x, got %x\n", vh->crc7, c);
	263	return EIO;
	264	}
	265
	266	return 0;
	267	}
	268
	269	static int verify_io_u_crc16(struct verify_header hdr, struct io_u io_u,
	270	unsigned int header_num)
	271	{
	272	void *p = io_u_verify_off(hdr, io_u, header_num);
	273	struct vhdr_crc16 *vh = hdr_priv(hdr);
	274	unsigned short c;
	275
	276	dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", io_u, hdr->len);
	277
	278	c = crc16(p, hdr->len - hdr_size(hdr));
	279
	280	if (c != vh->crc16) {
	281	log_err("crc16: verify failed at %llu/%u\n",
	282	io_u->offset + header_num * hdr->len,
	283	hdr->len);
	284	log_err("crc16: wanted %x, got %x\n", vh->crc16, c);
	285	return EIO;
	286	}
	287
	288	return 0;
	289	}
	290
	291	static int verify_io_u_crc64(struct verify_header hdr, struct io_u io_u,
	292	unsigned int header_num)
	293	{
	294	void *p = io_u_verify_off(hdr, io_u, header_num);
	295	struct vhdr_crc64 *vh = hdr_priv(hdr);
	296	unsigned long long c;
	297
	298	dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", io_u, hdr->len);
	299
	300	c = crc64(p, hdr->len - hdr_size(hdr));
	301
	302	if (c != vh->crc64) {
	303	log_err("crc64: verify failed at %llu/%u\n",
	304	io_u->offset + header_num * hdr->len,
	305	hdr->len);
	306	log_err("crc64: wanted %llx, got %llx\n", (unsigned long long) vh->crc64, c);
	307	return EIO;
	308	}
	309
	310	return 0;
	311	}
	312
	313	static int verify_io_u_crc32(struct verify_header hdr, struct io_u io_u,
	314	unsigned int header_num)
	315	{
	316	void *p = io_u_verify_off(hdr, io_u, header_num);
	317	struct vhdr_crc32 *vh = hdr_priv(hdr);
	318	uint32_t c;
	319
	320	dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", io_u, hdr->len);
	321
	322	c = crc32(p, hdr->len - hdr_size(hdr));
	323
	324	if (c != vh->crc32) {
	325	log_err("crc32: verify failed at %llu/%u\n",
	326	io_u->offset + header_num * hdr->len,
	327	hdr->len);
	328	log_err("crc32: wanted %x, got %x\n", vh->crc32, c);
	329	return EIO;
	330	}
	331
	332	return 0;
	333	}
	334
	335	static int verify_io_u_md5(struct verify_header hdr, struct io_u io_u,
	336	unsigned int header_num)
	337	{
	338	void *p = io_u_verify_off(hdr, io_u, header_num);
	339	struct vhdr_md5 *vh = hdr_priv(hdr);
	340	uint32_t hash[MD5_HASH_WORDS];
	341	struct md5_ctx md5_ctx = {
	342	.hash = hash,
	343	};
	344
	345	dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", io_u, hdr->len);
	346
	347	md5_init(&md5_ctx);
	348	md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
	349
	350	if (memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash))) {
	351	log_err("md5: verify failed at %llu/%u\n",
	352	io_u->offset + header_num * hdr->len,
	353	hdr->len);
	354	hexdump(vh->md5_digest, sizeof(vh->md5_digest));
	355	hexdump(md5_ctx.hash, sizeof(hash));
	356	return EIO;
	357	}
	358
	359	return 0;
	360	}
	361
	362	static unsigned int hweight8(unsigned int w)
	363	{
	364	unsigned int res = w - ((w >> 1) & 0x55);
	365
	366	res = (res & 0x33) + ((res >> 2) & 0x33);
	367	return (res + (res >> 4)) & 0x0F;
	368	}
	369
	370	int verify_io_u_pattern(unsigned long pattern, unsigned long pattern_size,
	371	char *buf, unsigned int len, unsigned int mod)
	372	{
	373	unsigned int i;
	374	char split_pattern[4];
	375
	376	for (i = 0; i < 4; i++) {
	377	split_pattern[i] = pattern & 0xff;
	378	pattern >>= 8;
	379	}
	380
	381	for (i = 0; i < len; i++) {
	382	if (buf[i] != split_pattern[mod]) {
	383	unsigned int bits;
	384
	385	bits = hweight8(buf[i] ^ split_pattern[mod]);
	386	log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
	387	buf[i], split_pattern[mod], bits);
	388	log_err("fio: bad pattern block offset %u\n", i);
	389	return EIO;
	390	}
	391	mod++;
	392	if (mod == pattern_size)
	393	mod = 0;
	394	}
	395
	396	return 0;
	397	}
	398
	399	int verify_io_u(struct thread_data td, struct io_u io_u)
	400	{
	401	struct verify_header *hdr;
	402	unsigned int hdr_size, hdr_inc, hdr_num = 0;
	403	void *p;
	404	int ret;
	405
	406	if (td->o.verify == VERIFY_NULL \|\| io_u->ddir != DDIR_READ)
	407	return 0;
	408
	409	hdr_inc = io_u->buflen;
	410	if (td->o.verify_interval)
	411	hdr_inc = td->o.verify_interval;
	412
	413	ret = 0;
	414	for (p = io_u->buf; p < io_u->buf + io_u->buflen; p += hdr_inc, hdr_num++) {
	415	if (ret && td->o.verify_fatal) {
	416	td->terminate = 1;
	417	break;
	418	}
	419	hdr_size = __hdr_size(td->o.verify);
	420	if (td->o.verify_offset)
	421	memswp(p, p + td->o.verify_offset, hdr_size);
	422	hdr = p;
	423
	424	if (hdr->fio_magic != FIO_HDR_MAGIC) {
	425	log_err("Bad verify header %x\n", hdr->fio_magic);
	426	return EIO;
	427	}
	428
	429	if (td->o.verify_pattern_bytes) {
	430	dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
	431	io_u, hdr->len);
	432	ret = verify_io_u_pattern(td->o.verify_pattern,
	433	td->o.verify_pattern_bytes,
	434	p + hdr_size,
	435	hdr_inc - hdr_size,
	436	hdr_size % 4);
	437	if (ret)
	438	log_err("fio: verify failed at %llu/%u\n",
	439	io_u->offset + hdr_num * hdr->len,
	440	hdr->len);
	441	continue;
	442	}
	443
	444	switch (hdr->verify_type) {
	445	case VERIFY_MD5:
	446	ret = verify_io_u_md5(hdr, io_u, hdr_num);
	447	break;
	448	case VERIFY_CRC64:
	449	ret = verify_io_u_crc64(hdr, io_u, hdr_num);
	450	break;
	451	case VERIFY_CRC32:
	452	ret = verify_io_u_crc32(hdr, io_u, hdr_num);
	453	break;
	454	case VERIFY_CRC16:
	455	ret = verify_io_u_crc16(hdr, io_u, hdr_num);
	456	break;
	457	case VERIFY_CRC7:
	458	ret = verify_io_u_crc7(hdr, io_u, hdr_num);
	459	break;
	460	case VERIFY_SHA256:
	461	ret = verify_io_u_sha256(hdr, io_u, hdr_num);
	462	break;
	463	case VERIFY_SHA512:
	464	ret = verify_io_u_sha512(hdr, io_u, hdr_num);
	465	break;
	466	case VERIFY_META:
	467	ret = verify_io_u_meta(hdr, td, io_u, hdr_num);
	468	break;
	469	default:
	470	log_err("Bad verify type %u\n", hdr->verify_type);
	471	ret = EINVAL;
	472	}
	473	}
	474
	475	return ret;
	476	}
	477
	478	static void fill_meta(struct verify_header hdr, struct thread_data td,
	479	struct io_u *io_u, unsigned int header_num)
	480	{
	481	struct vhdr_meta *vh = hdr_priv(hdr);
	482
	483	vh->thread = td->thread_number;
	484
	485	vh->time_sec = io_u->start_time.tv_sec;
	486	vh->time_usec = io_u->start_time.tv_usec;
	487
	488	vh->numberio = td->io_issues[DDIR_WRITE];
	489
	490	vh->offset = io_u->offset + header_num * td->o.verify_interval;
	491	}
	492
	493	static void fill_sha512(struct verify_header hdr, void p, unsigned int len)
	494	{
	495	struct vhdr_sha512 *vh = hdr_priv(hdr);
	496	struct sha512_ctx sha512_ctx = {
	497	.buf = vh->sha512,
	498	};
	499
	500	sha512_init(&sha512_ctx);
	501	sha512_update(&sha512_ctx, p, len);
	502	}
	503
	504	static void fill_sha256(struct verify_header hdr, void p, unsigned int len)
	505	{
	506	struct vhdr_sha256 *vh = hdr_priv(hdr);
	507	struct sha256_ctx sha256_ctx = {
	508	.buf = vh->sha256,
	509	};
	510
	511	sha256_init(&sha256_ctx);
	512	sha256_update(&sha256_ctx, p, len);
	513	}
	514
	515	static void fill_crc7(struct verify_header hdr, void p, unsigned int len)
	516	{
	517	struct vhdr_crc7 *vh = hdr_priv(hdr);
	518
	519	vh->crc7 = crc7(p, len);
	520	}
	521
	522	static void fill_crc16(struct verify_header hdr, void p, unsigned int len)
	523	{
	524	struct vhdr_crc16 *vh = hdr_priv(hdr);
	525
	526	vh->crc16 = crc16(p, len);
	527	}
	528
	529	static void fill_crc32(struct verify_header hdr, void p, unsigned int len)
	530	{
	531	struct vhdr_crc32 *vh = hdr_priv(hdr);
	532
	533	vh->crc32 = crc32(p, len);
	534	}
	535
	536	static void fill_crc64(struct verify_header hdr, void p, unsigned int len)
	537	{
	538	struct vhdr_crc64 *vh = hdr_priv(hdr);
	539
	540	vh->crc64 = crc64(p, len);
	541	}
	542
	543	static void fill_md5(struct verify_header hdr, void p, unsigned int len)
	544	{
	545	struct vhdr_md5 *vh = hdr_priv(hdr);
	546	struct md5_ctx md5_ctx = {
	547	.hash = (uint32_t *) vh->md5_digest,
	548	};
	549
	550	md5_init(&md5_ctx);
	551	md5_update(&md5_ctx, p, len);
	552	}
	553
	554	/*
	555	* fill body of io_u->buf with random data and add a header with the
	556	* crc32 or md5 sum of that data.
	557	*/
	558	void populate_verify_io_u(struct thread_data td, struct io_u io_u)
	559	{
	560	struct verify_header *hdr;
	561	void p = io_u->buf, data;
	562	unsigned int hdr_inc, data_len, header_num = 0;
	563
	564	if (td->o.verify == VERIFY_NULL)
	565	return;
	566
	567	fill_pattern(td, p, io_u->buflen);
	568
	569	hdr_inc = io_u->buflen;
	570	if (td->o.verify_interval)
	571	hdr_inc = td->o.verify_interval;
	572
	573	for (;p < io_u->buf + io_u->buflen; p += hdr_inc) {
	574	hdr = p;
	575
	576	hdr->fio_magic = FIO_HDR_MAGIC;
	577	hdr->verify_type = td->o.verify;
	578	hdr->len = hdr_inc;
	579	data_len = hdr_inc - hdr_size(hdr);
	580
	581	data = p + hdr_size(hdr);
	582	switch (td->o.verify) {
	583	case VERIFY_MD5:
	584	dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
	585	io_u, hdr->len);
	586	fill_md5(hdr, data, data_len);
	587	break;
	588	case VERIFY_CRC64:
	589	dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
	590	io_u, hdr->len);
	591	fill_crc64(hdr, data, data_len);
	592	break;
	593	case VERIFY_CRC32:
	594	dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
	595	io_u, hdr->len);
	596	fill_crc32(hdr, data, data_len);
	597	break;
	598	case VERIFY_CRC16:
	599	dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
	600	io_u, hdr->len);
	601	fill_crc16(hdr, data, data_len);
	602	break;
	603	case VERIFY_CRC7:
	604	dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
	605	io_u, hdr->len);
	606	fill_crc7(hdr, data, data_len);
	607	break;
	608	case VERIFY_SHA256:
	609	dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
	610	io_u, hdr->len);
	611	fill_sha256(hdr, data, data_len);
	612	break;
	613	case VERIFY_SHA512:
	614	dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
	615	io_u, hdr->len);
	616	fill_sha512(hdr, data, data_len);
	617	break;
	618	case VERIFY_META:
	619	dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
	620	io_u, hdr->len);
	621	fill_meta(hdr, td, io_u, header_num);
	622	break;
	623	default:
	624	log_err("fio: bad verify type: %d\n", td->o.verify);
	625	assert(0);
	626	}
	627	if (td->o.verify_offset)
	628	memswp(p, p + td->o.verify_offset, hdr_size(hdr));
	629	header_num++;
	630	}
	631	}
	632
	633	int get_next_verify(struct thread_data td, struct io_u io_u)
	634	{
	635	struct io_piece *ipo = NULL;
	636
	637	/*
	638	* this io_u is from a requeue, we already filled the offsets
	639	*/
	640	if (io_u->file)
	641	return 0;
	642
	643	if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
	644	struct rb_node *n = rb_first(&td->io_hist_tree);
	645
	646	ipo = rb_entry(n, struct io_piece, rb_node);
	647	rb_erase(n, &td->io_hist_tree);
	648	} else if (!list_empty(&td->io_hist_list)) {
	649	ipo = list_entry(td->io_hist_list.next, struct io_piece, list);
	650	list_del(&ipo->list);
	651	}
	652
	653	if (ipo) {
	654	io_u->offset = ipo->offset;
	655	io_u->buflen = ipo->len;
	656	io_u->file = ipo->file;
	657
	658	if ((io_u->file->flags & FIO_FILE_OPEN) == 0) {
	659	int r = td_io_open_file(td, io_u->file);
	660
	661	if (r) {
	662	dprint(FD_VERIFY, "failed file %s open\n",
	663	io_u->file->file_name);
	664	return 1;
	665	}
	666	}
	667
	668	get_file(ipo->file);
	669	assert(io_u->file->flags & FIO_FILE_OPEN);
	670	io_u->ddir = DDIR_READ;
	671	io_u->xfer_buf = io_u->buf;
	672	io_u->xfer_buflen = io_u->buflen;
	673	free(ipo);
	674	dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
	675	return 0;
	676	}
	677
	678	dprint(FD_VERIFY, "get_next_verify: empty\n");
	679	return 1;
	680	}