/*

* IO verification helpers

*/

#include <unistd.h>

#include <fcntl.h>

#include <string.h>

#include <assert.h>

#include <pthread.h>

#include <libgen.h>

#include "fio.h"

#include "verify.h"

#include "trim.h"

#include "lib/rand.h"

#include "lib/hweight.h"

#include "crc/md5.h"

#include "crc/crc64.h"

#include "crc/crc32.h"

#include "crc/crc32c.h"

#include "crc/crc16.h"

#include "crc/crc7.h"

#include "crc/sha256.h"

#include "crc/sha512.h"

#include "crc/sha1.h"

static void populate_hdr(struct thread_data *td, struct io_u *io_u,

struct verify_header *hdr, unsigned int header_num,

unsigned int header_len);

void fill_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed)

{

switch (td->o.verify_pattern_bytes) {

case 0:

dprint(FD_VERIFY, "fill random bytes len=%u\n", len);

if (use_seed)

__fill_random_buf(p, len, seed);

else

io_u->rand_seed = fill_random_buf(&td->buf_state, p, len);

break;

case 1:

if (io_u->buf_filled_len >= len) {

dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);

return;

}

dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);

memset(p, td->o.verify_pattern[0], len);

io_u->buf_filled_len = len;

break;

default: {

unsigned int i = 0, size = 0;

unsigned char *b = p;

if (io_u->buf_filled_len >= len) {

dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",

td->o.verify_pattern_bytes, len);

return;

}

dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",

td->o.verify_pattern_bytes, len);

while (i < len) {

size = td->o.verify_pattern_bytes;

if (size > (len - i))

size = len - i;

memcpy(b+i, td->o.verify_pattern, size);

i += size;

}

io_u->buf_filled_len = len;

break;

}

}

}

static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)

{

unsigned int hdr_inc;

hdr_inc = io_u->buflen;

if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)

hdr_inc = td->o.verify_interval;

return hdr_inc;

}

static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,

unsigned long seed, int use_seed)

{

unsigned int hdr_inc, header_num;

struct verify_header *hdr;

void *p = io_u->buf;

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

hdr_inc = get_hdr_inc(td, io_u);

header_num = 0;

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

hdr = p;

populate_hdr(td, io_u, hdr, header_num, hdr_inc);

header_num++;

}

}

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_err("%02x", p[i]);

log_err("\n");

}

/*

* Prepare for separation of verify_header and checksum header

*/

static inline unsigned int __hdr_size(int verify_type)

{

unsigned int len = 0;

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_CRC32C:

case VERIFY_CRC32:

case VERIFY_CRC32C_INTEL:

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;

case VERIFY_SHA1:

len = sizeof(struct vhdr_sha1);

break;

case VERIFY_PATTERN:

len = 0;

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);

}

/*

* Verify container, pass info to verify handlers and allow them to

* pass info back in case of error

*/

struct vcont {

};

static void dump_buf(char *buf, unsigned int len, unsigned long long offset,

const char *type, struct fio_file *f)

{

char *ptr, fname[256];

int ret, fd;

ptr = strdup(f->file_name);

strcpy(fname, basename(ptr));

sprintf(fname + strlen(fname), ".%llu.%s", offset, type);

fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);

if (fd < 0) {

perror("open verify buf file");

return;

}

while (len) {

ret = write(fd, buf, len);

if (!ret)

break;

else if (ret < 0) {

perror("write verify buf file");

break;

}

len -= ret;

buf += ret;

}

close(fd);

log_err(" %s data dumped as %s\n", type, fname);

free(ptr);

}

/*

* Dump the contents of the read block and re-generate the correct data

* and dump that too.

*/

static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)

{

struct thread_data *td = vc->td;

struct io_u *io_u = vc->io_u;

unsigned long hdr_offset;

struct io_u dummy;

void *buf;

if (!td->o.verify_dump)

return;

/*

* Dump the contents we just read off disk

*/

hdr_offset = vc->hdr_num * hdr->len;

dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,

"received", vc->io_u->file);

/*

* Allocate a new buf and re-generate the original data

*/

buf = malloc(io_u->buflen);

dummy = *io_u;

dummy.buf = buf;

dummy.rand_seed = hdr->rand_seed;

dummy.buf_filled_len = 0;

dummy.buflen = io_u->buflen;

fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);

dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,

"expected", vc->io_u->file);

free(buf);

}

static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)

{

unsigned long long offset;

offset = vc->io_u->offset;

offset += vc->hdr_num * hdr->len;

log_err("%.8s: verify failed at file %s offset %llu, length %u\n",

vc->name, vc->io_u->file->file_name, offset, hdr->len);

if (vc->good_crc && vc->bad_crc) {

log_err(" Expected CRC: ");

hexdump(vc->good_crc, vc->crc_len);

log_err(" Received CRC: ");

hexdump(vc->bad_crc, vc->crc_len);

}

dump_verify_buffers(hdr, vc);

}

/*

* Return data area 'header_num'

*/

static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)

{

return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);

}

static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)

{

struct thread_data *td = vc->td;

struct io_u *io_u = vc->io_u;

char *buf, *pattern;

unsigned int header_size = __hdr_size(td->o.verify);

unsigned int len, mod, i, size, pattern_size;

pattern = td->o.verify_pattern;

pattern_size = td->o.verify_pattern_bytes;

if (pattern_size <= 1)

pattern_size = MAX_PATTERN_SIZE;

buf = (void *) hdr + header_size;

len = get_hdr_inc(td, io_u) - header_size;

mod = header_size % pattern_size;

for (i = 0; i < len; i += size) {

size = pattern_size - mod;

if (size > (len - i))

size = len - i;

if (memcmp(buf + i, pattern + mod, size))

/* Let the slow compare find the first mismatch byte. */

break;

mod = 0;

}

for (; i < len; i++) {

if (buf[i] != pattern[mod]) {

unsigned int bits;

bits = hweight8(buf[i] ^ pattern[mod]);

log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",

buf[i], pattern[mod], bits);

log_err("fio: bad pattern block offset %u\n", i);

dump_verify_buffers(hdr, vc);

return EILSEQ;

}

mod++;

if (mod == td->o.verify_pattern_bytes)

mod = 0;

}

return 0;

}

static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)

{

struct thread_data *td = vc->td;

struct vhdr_meta *vh = hdr_priv(hdr);

struct io_u *io_u = vc->io_u;

int ret = EILSEQ;

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

if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)

ret = 0;

if (td->o.verify_pattern_bytes)

ret |= verify_io_u_pattern(hdr, vc);

if (!ret)

return 0;

vc->name = "meta";

log_verify_failure(hdr, vc);

return ret;

}

static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_sha512 *vh = hdr_priv(hdr);

uint8_t sha512[128];

struct fio_sha512_ctx sha512_ctx = {

.buf = sha512,

};

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

fio_sha512_init(&sha512_ctx);

fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));

if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))

return 0;

vc->name = "sha512";

vc->good_crc = vh->sha512;

vc->bad_crc = sha512_ctx.buf;

vc->crc_len = sizeof(vh->sha512);

log_verify_failure(hdr, vc);

return EILSEQ;

}

static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_sha256 *vh = hdr_priv(hdr);

uint8_t sha256[64];

struct fio_sha256_ctx sha256_ctx = {

.buf = sha256,

};

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

fio_sha256_init(&sha256_ctx);

fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));

if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))

return 0;

vc->name = "sha256";

vc->good_crc = vh->sha256;

vc->bad_crc = sha256_ctx.buf;

vc->crc_len = sizeof(vh->sha256);

log_verify_failure(hdr, vc);

return EILSEQ;

}

static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_sha1 *vh = hdr_priv(hdr);

uint32_t sha1[5];

struct fio_sha1_ctx sha1_ctx = {

.H = sha1,

};

dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);

fio_sha1_init(&sha1_ctx);

fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));

if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))

return 0;

vc->name = "sha1";

vc->good_crc = vh->sha1;

vc->bad_crc = sha1_ctx.H;

vc->crc_len = sizeof(vh->sha1);

log_verify_failure(hdr, vc);

return EILSEQ;

}

static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_crc7 *vh = hdr_priv(hdr);

unsigned char c;

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

c = fio_crc7(p, hdr->len - hdr_size(hdr));

if (c == vh->crc7)

return 0;

vc->name = "crc7";

vc->good_crc = &vh->crc7;

vc->bad_crc = &c;

vc->crc_len = 1;

log_verify_failure(hdr, vc);

return EILSEQ;

}

static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_crc16 *vh = hdr_priv(hdr);

unsigned short c;

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

c = fio_crc16(p, hdr->len - hdr_size(hdr));

if (c == vh->crc16)

return 0;

vc->name = "crc16";

vc->good_crc = &vh->crc16;

vc->bad_crc = &c;

vc->crc_len = 2;

log_verify_failure(hdr, vc);

return EILSEQ;

}

static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_crc64 *vh = hdr_priv(hdr);

unsigned long long c;

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

c = fio_crc64(p, hdr->len - hdr_size(hdr));

if (c == vh->crc64)

return 0;

vc->name = "crc64";

vc->good_crc = &vh->crc64;

vc->bad_crc = &c;

vc->crc_len = 8;

log_verify_failure(hdr, vc);

return EILSEQ;

}

static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_crc32 *vh = hdr_priv(hdr);

uint32_t c;

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

c = fio_crc32(p, hdr->len - hdr_size(hdr));

if (c == vh->crc32)

return 0;

vc->name = "crc32";

vc->good_crc = &vh->crc32;

vc->bad_crc = &c;

vc->crc_len = 4;

log_verify_failure(hdr, vc);

return EILSEQ;

}

static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_crc32 *vh = hdr_priv(hdr);

uint32_t c;

dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);

c = fio_crc32c(p, hdr->len - hdr_size(hdr));

if (c == vh->crc32)

return 0;

vc->name = "crc32c";

vc->good_crc = &vh->crc32;

vc->bad_crc = &c;

vc->crc_len = 4;

log_verify_failure(hdr, vc);

return EILSEQ;

}

static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)

{

void *p = io_u_verify_off(hdr, vc);

struct vhdr_md5 *vh = hdr_priv(hdr);

uint32_t hash[MD5_HASH_WORDS];

struct fio_md5_ctx md5_ctx = {

.hash = hash,

};

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

fio_md5_init(&md5_ctx);

fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));

if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))

return 0;

vc->name = "md5";

vc->good_crc = vh->md5_digest;

vc->bad_crc = md5_ctx.hash;

vc->crc_len = sizeof(hash);

log_verify_failure(hdr, vc);

return EILSEQ;

}

/*

* Push IO verification to a separate thread

*/

int verify_io_u_async(struct thread_data *td, struct io_u *io_u)

{

if (io_u->file)

put_file_log(td, io_u->file);

pthread_mutex_lock(&td->io_u_lock);

if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {

td->cur_depth--;

io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;

}

flist_add_tail(&io_u->verify_list, &td->verify_list);

io_u->flags |= IO_U_F_FREE_DEF;

pthread_mutex_unlock(&td->io_u_lock);

pthread_cond_signal(&td->verify_cond);

return 0;

}

static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)

{

static char zero_buf[1024];

unsigned int this_len, len;

int ret = 0;

void *p;

if (!td->o.trim_zero)

return 0;

len = io_u->buflen;

p = io_u->buf;

do {

this_len = sizeof(zero_buf);

if (this_len > len)

this_len = len;

if (memcmp(p, zero_buf, this_len)) {

ret = EILSEQ;

break;

}

len -= this_len;

p += this_len;

} while (len);

if (!ret)

return 0;

log_err("trim: verify failed at file %s offset %llu, length %lu"

", block offset %lu\n",

io_u->file->file_name, io_u->offset, io_u->buflen,

(unsigned long) (p - io_u->buf));

return ret;

}

static int verify_header(struct io_u *io_u, struct verify_header *hdr)

{

void *p = hdr;

uint32_t crc;

if (hdr->magic != FIO_HDR_MAGIC)

return 0;

if (hdr->len > io_u->buflen) {

log_err("fio: verify header exceeds buffer length (%u > %lu)\n", hdr->len, io_u->buflen);

return 0;

}

crc = fio_crc32c(p, offsetof(struct verify_header, crc32));

if (crc == hdr->crc32)

return 1;

log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);

return 0;

}

int verify_io_u(struct thread_data *td, struct io_u *io_u)

{

struct verify_header *hdr;

unsigned int header_size, hdr_inc, hdr_num = 0;

void *p;

int ret;

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

return 0;

if (io_u->flags & IO_U_F_TRIMMED) {

ret = verify_trimmed_io_u(td, io_u);

goto done;

}

hdr_inc = get_hdr_inc(td, io_u);

ret = 0;

for (p = io_u->buf; p < io_u->buf + io_u->buflen;

p += hdr_inc, hdr_num++) {

struct vcont vc = {

.io_u = io_u,

.hdr_num = hdr_num,

.td = td,

};

unsigned int verify_type;

if (ret && td->o.verify_fatal)

break;

header_size = __hdr_size(td->o.verify);

if (td->o.verify_offset)

memswp(p, p + td->o.verify_offset, header_size);

hdr = p;

if (!verify_header(io_u, hdr)) {

log_err("verify: bad magic header %x, wanted %x at "

"file %s offset %llu, length %u\n",

hdr->magic, FIO_HDR_MAGIC,

io_u->file->file_name,

io_u->offset + hdr_num * hdr->len, hdr->len);

return EILSEQ;

}

if (td->o.verify != VERIFY_NONE)

verify_type = td->o.verify;

else

verify_type = hdr->verify_type;

switch (verify_type) {

case VERIFY_MD5:

ret = verify_io_u_md5(hdr, &vc);

break;

case VERIFY_CRC64:

ret = verify_io_u_crc64(hdr, &vc);

break;

case VERIFY_CRC32C:

case VERIFY_CRC32C_INTEL:

ret = verify_io_u_crc32c(hdr, &vc);

break;

case VERIFY_CRC32:

ret = verify_io_u_crc32(hdr, &vc);

break;

case VERIFY_CRC16:

ret = verify_io_u_crc16(hdr, &vc);

break;

case VERIFY_CRC7:

ret = verify_io_u_crc7(hdr, &vc);

break;

case VERIFY_SHA256:

ret = verify_io_u_sha256(hdr, &vc);

break;

case VERIFY_SHA512:

ret = verify_io_u_sha512(hdr, &vc);

break;

case VERIFY_META:

ret = verify_io_u_meta(hdr, &vc);

break;

case VERIFY_SHA1:

ret = verify_io_u_sha1(hdr, &vc);

break;

case VERIFY_PATTERN:

ret = verify_io_u_pattern(hdr, &vc);

break;

default:

log_err("Bad verify type %u\n", hdr->verify_type);

ret = EINVAL;

}

if (ret && verify_type != hdr->verify_type)

log_err("fio: verify type mismatch (%u media, %u given)\n",

hdr->verify_type, verify_type);

}

done:

if (ret && td->o.verify_fatal)

td->terminate = 1;

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 fio_sha512_ctx sha512_ctx = {

.buf = vh->sha512,

};

fio_sha512_init(&sha512_ctx);

fio_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 fio_sha256_ctx sha256_ctx = {

.buf = vh->sha256,

};

fio_sha256_init(&sha256_ctx);

fio_sha256_update(&sha256_ctx, p, len);

}

static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)

{

struct vhdr_sha1 *vh = hdr_priv(hdr);

struct fio_sha1_ctx sha1_ctx = {

.H = vh->sha1,

};

fio_sha1_init(&sha1_ctx);

fio_sha1_update(&sha1_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 = fio_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 = fio_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 = fio_crc32(p, len);

}

static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)

{

struct vhdr_crc32 *vh = hdr_priv(hdr);

vh->crc32 = fio_crc32c(p, len);

}

static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)

{

struct vhdr_crc64 *vh = hdr_priv(hdr);

vh->crc64 = fio_crc64(p, len);

}

static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)

{

struct vhdr_md5 *vh = hdr_priv(hdr);

struct fio_md5_ctx md5_ctx = {

.hash = (uint32_t *) vh->md5_digest,

};

fio_md5_init(&md5_ctx);

fio_md5_update(&md5_ctx, p, len);

}

static void populate_hdr(struct thread_data *td, struct io_u *io_u,

struct verify_header *hdr, unsigned int header_num,

unsigned int header_len)

{

unsigned int data_len;

void *data, *p;

p = (void *) hdr;

hdr->magic = FIO_HDR_MAGIC;

hdr->verify_type = td->o.verify;

hdr->len = header_len;

hdr->rand_seed = io_u->rand_seed;

hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));

data_len = header_len - 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_CRC32C:

case VERIFY_CRC32C_INTEL:

dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",

io_u, hdr->len);

fill_crc32c(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;

case VERIFY_SHA1:

dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",

io_u, hdr->len);

fill_sha1(hdr, data, data_len);

break;

case VERIFY_PATTERN:

/* nothing to do here */

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));

}

/*

* fill body of io_u->buf with random data and add a header with the

* checksum of choice

*/

void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)

{

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

return;

fill_pattern_headers(td, io_u, 0, 0);

}

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);

assert(ipo->flags & IP_F_ONRB);

ipo->flags &= ~IP_F_ONRB;

} else if (!flist_empty(&td->io_hist_list)) {

ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);

flist_del(&ipo->list);

assert(ipo->flags & IP_F_ONLIST);

ipo->flags &= ~IP_F_ONLIST;

}

if (ipo) {

td->io_hist_len--;

io_u->offset = ipo->offset;

io_u->buflen = ipo->len;

io_u->file = ipo->file;

io_u->flags |= IO_U_F_VER_LIST;

if (ipo->flags & IP_F_TRIMMED)

io_u->flags |= IO_U_F_TRIMMED;

if (!fio_file_open(io_u->file)) {

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(fio_file_open(io_u->file));

io_u->ddir = DDIR_READ;

io_u->xfer_buf = io_u->buf;

io_u->xfer_buflen = io_u->buflen;

remove_trim_entry(td, ipo);

free(ipo);