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[fio.git] / verify.c
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1/*
2 * IO verification helpers
3 */
4#include <unistd.h>
5#include <fcntl.h>
6#include <string.h>
7#include <assert.h>
8#include <pthread.h>
9
10#include "fio.h"
11#include "verify.h"
12#include "smalloc.h"
13
14#include "crc/md5.h"
15#include "crc/crc64.h"
16#include "crc/crc32.h"
17#include "crc/crc32c.h"
18#include "crc/crc16.h"
19#include "crc/crc7.h"
20#include "crc/sha256.h"
21#include "crc/sha512.h"
22#include "crc/sha1.h"
23
24static void fill_random_bytes(struct thread_data *td, void *p, unsigned int len)
25{
26 unsigned int todo;
27 int r;
28
29 while (len) {
30 r = os_random_long(&td->verify_state);
31
32 /*
33 * lrand48_r seems to be broken and only fill the bottom
34 * 32-bits, even on 64-bit archs with 64-bit longs
35 */
36 todo = sizeof(r);
37 if (todo > len)
38 todo = len;
39
40 memcpy(p, &r, todo);
41
42 len -= todo;
43 p += todo;
44 }
45}
46
47static void fill_pattern(struct thread_data *td, void *p, unsigned int len)
48{
49 switch (td->o.verify_pattern_bytes) {
50 case 0:
51 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
52 fill_random_bytes(td, p, len);
53 break;
54 case 1:
55 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
56 memset(p, td->o.verify_pattern[0], len);
57 break;
58 default: {
59 unsigned int i = 0, size = 0;
60 unsigned char *b = p;
61
62 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
63 td->o.verify_pattern_bytes, len);
64
65 while (i < len) {
66 size = td->o.verify_pattern_bytes;
67 if (size > (len - i))
68 size = len - i;
69 memcpy(b+i, td->o.verify_pattern, size);
70 i += size;
71 }
72 break;
73 }
74 }
75}
76
77static void memswp(void *buf1, void *buf2, unsigned int len)
78{
79 char swap[200];
80
81 assert(len <= sizeof(swap));
82
83 memcpy(&swap, buf1, len);
84 memcpy(buf1, buf2, len);
85 memcpy(buf2, &swap, len);
86}
87
88static void hexdump(void *buffer, int len)
89{
90 unsigned char *p = buffer;
91 int i;
92
93 for (i = 0; i < len; i++)
94 log_err("%02x", p[i]);
95 log_err("\n");
96}
97
98/*
99 * Prepare for seperation of verify_header and checksum header
100 */
101static inline unsigned int __hdr_size(int verify_type)
102{
103 unsigned int len = len;
104
105 switch (verify_type) {
106 case VERIFY_NONE:
107 case VERIFY_NULL:
108 len = 0;
109 break;
110 case VERIFY_MD5:
111 len = sizeof(struct vhdr_md5);
112 break;
113 case VERIFY_CRC64:
114 len = sizeof(struct vhdr_crc64);
115 break;
116 case VERIFY_CRC32C:
117 case VERIFY_CRC32:
118 case VERIFY_CRC32C_INTEL:
119 len = sizeof(struct vhdr_crc32);
120 break;
121 case VERIFY_CRC16:
122 len = sizeof(struct vhdr_crc16);
123 break;
124 case VERIFY_CRC7:
125 len = sizeof(struct vhdr_crc7);
126 break;
127 case VERIFY_SHA256:
128 len = sizeof(struct vhdr_sha256);
129 break;
130 case VERIFY_SHA512:
131 len = sizeof(struct vhdr_sha512);
132 break;
133 case VERIFY_META:
134 len = sizeof(struct vhdr_meta);
135 break;
136 case VERIFY_SHA1:
137 len = sizeof(struct vhdr_sha1);
138 break;
139 default:
140 log_err("fio: unknown verify header!\n");
141 assert(0);
142 }
143
144 return len + sizeof(struct verify_header);
145}
146
147static inline unsigned int hdr_size(struct verify_header *hdr)
148{
149 return __hdr_size(hdr->verify_type);
150}
151
152static void *hdr_priv(struct verify_header *hdr)
153{
154 void *priv = hdr;
155
156 return priv + sizeof(struct verify_header);
157}
158
159/*
160 * Verify container, pass info to verify handlers and allow them to
161 * pass info back in case of error
162 */
163struct vcont {
164 /*
165 * Input
166 */
167 struct io_u *io_u;
168 unsigned int hdr_num;
169
170 /*
171 * Output, only valid in case of error
172 */
173 const char *name;
174 void *good_crc;
175 void *bad_crc;
176 unsigned int crc_len;
177};
178
179static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
180{
181 unsigned long long offset;
182
183 offset = vc->io_u->offset;
184 offset += vc->hdr_num * hdr->len;
185 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
186 vc->name, vc->io_u->file->file_name, offset, hdr->len);
187
188 if (vc->good_crc && vc->bad_crc) {
189 log_err(" Expected CRC: ");
190 hexdump(vc->good_crc, vc->crc_len);
191 log_err(" Received CRC: ");
192 hexdump(vc->bad_crc, vc->crc_len);
193 }
194}
195
196/*
197 * Return data area 'header_num'
198 */
199static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
200{
201 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
202}
203
204static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
205 struct vcont *vc)
206{
207 struct vhdr_meta *vh = hdr_priv(hdr);
208 struct io_u *io_u = vc->io_u;
209
210 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
211
212 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
213 return 0;
214
215 vc->name = "meta";
216 log_verify_failure(hdr, vc);
217 return EILSEQ;
218}
219
220static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
221{
222 void *p = io_u_verify_off(hdr, vc);
223 struct vhdr_sha512 *vh = hdr_priv(hdr);
224 uint8_t sha512[128];
225 struct sha512_ctx sha512_ctx = {
226 .buf = sha512,
227 };
228
229 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
230
231 sha512_init(&sha512_ctx);
232 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
233
234 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
235 return 0;
236
237 vc->name = "sha512";
238 vc->good_crc = vh->sha512;
239 vc->bad_crc = sha512_ctx.buf;
240 vc->crc_len = sizeof(vh->sha512);
241 log_verify_failure(hdr, vc);
242 return EILSEQ;
243}
244
245static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
246{
247 void *p = io_u_verify_off(hdr, vc);
248 struct vhdr_sha256 *vh = hdr_priv(hdr);
249 uint8_t sha256[64];
250 struct sha256_ctx sha256_ctx = {
251 .buf = sha256,
252 };
253
254 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
255
256 sha256_init(&sha256_ctx);
257 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
258
259 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
260 return 0;
261
262 vc->name = "sha256";
263 vc->good_crc = vh->sha256;
264 vc->bad_crc = sha256_ctx.buf;
265 vc->crc_len = sizeof(vh->sha256);
266 log_verify_failure(hdr, vc);
267 return EILSEQ;
268}
269
270static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
271{
272 void *p = io_u_verify_off(hdr, vc);
273 struct vhdr_sha1 *vh = hdr_priv(hdr);
274 uint32_t sha1[5];
275 struct sha1_ctx sha1_ctx = {
276 .H = sha1,
277 };
278
279 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
280
281 sha1_init(&sha1_ctx);
282 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
283
284 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
285 return 0;
286
287 vc->name = "sha1";
288 vc->good_crc = vh->sha1;
289 vc->bad_crc = sha1_ctx.H;
290 vc->crc_len = sizeof(vh->sha1);
291 log_verify_failure(hdr, vc);
292 return EILSEQ;
293}
294
295static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
296{
297 void *p = io_u_verify_off(hdr, vc);
298 struct vhdr_crc7 *vh = hdr_priv(hdr);
299 unsigned char c;
300
301 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
302
303 c = crc7(p, hdr->len - hdr_size(hdr));
304
305 if (c == vh->crc7)
306 return 0;
307
308 vc->name = "crc7";
309 vc->good_crc = &vh->crc7;
310 vc->bad_crc = &c;
311 vc->crc_len = 1;
312 log_verify_failure(hdr, vc);
313 return EILSEQ;
314}
315
316static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
317{
318 void *p = io_u_verify_off(hdr, vc);
319 struct vhdr_crc16 *vh = hdr_priv(hdr);
320 unsigned short c;
321
322 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
323
324 c = crc16(p, hdr->len - hdr_size(hdr));
325
326 if (c == vh->crc16)
327 return 0;
328
329 vc->name = "crc16";
330 vc->good_crc = &vh->crc16;
331 vc->bad_crc = &c;
332 vc->crc_len = 2;
333 log_verify_failure(hdr, vc);
334 return EILSEQ;
335}
336
337static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
338{
339 void *p = io_u_verify_off(hdr, vc);
340 struct vhdr_crc64 *vh = hdr_priv(hdr);
341 unsigned long long c;
342
343 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
344
345 c = crc64(p, hdr->len - hdr_size(hdr));
346
347 if (c == vh->crc64)
348 return 0;
349
350 vc->name = "crc64";
351 vc->good_crc = &vh->crc64;
352 vc->bad_crc = &c;
353 vc->crc_len = 8;
354 log_verify_failure(hdr, vc);
355 return EILSEQ;
356}
357
358static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
359{
360 void *p = io_u_verify_off(hdr, vc);
361 struct vhdr_crc32 *vh = hdr_priv(hdr);
362 uint32_t c;
363
364 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
365
366 c = crc32(p, hdr->len - hdr_size(hdr));
367
368 if (c == vh->crc32)
369 return 0;
370
371 vc->name = "crc32";
372 vc->good_crc = &vh->crc32;
373 vc->bad_crc = &c;
374 vc->crc_len = 4;
375 log_verify_failure(hdr, vc);
376 return EILSEQ;
377}
378
379static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
380{
381 void *p = io_u_verify_off(hdr, vc);
382 struct vhdr_crc32 *vh = hdr_priv(hdr);
383 uint32_t c;
384
385 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
386
387 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
388 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
389 else
390 c = crc32c(p, hdr->len - hdr_size(hdr));
391
392 if (c == vh->crc32)
393 return 0;
394
395 vc->name = "crc32c";
396 vc->good_crc = &vh->crc32;
397 vc->bad_crc = &c;
398 vc->crc_len = 4;
399 log_verify_failure(hdr, vc);
400 return EILSEQ;
401}
402
403static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
404{
405 void *p = io_u_verify_off(hdr, vc);
406 struct vhdr_md5 *vh = hdr_priv(hdr);
407 uint32_t hash[MD5_HASH_WORDS];
408 struct md5_ctx md5_ctx = {
409 .hash = hash,
410 };
411
412 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
413
414 md5_init(&md5_ctx);
415 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
416
417 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
418 return 0;
419
420 vc->name = "md5";
421 vc->good_crc = vh->md5_digest;
422 vc->bad_crc = md5_ctx.hash;
423 vc->crc_len = sizeof(hash);
424 log_verify_failure(hdr, vc);
425 return EILSEQ;
426}
427
428static unsigned int hweight8(unsigned int w)
429{
430 unsigned int res = w - ((w >> 1) & 0x55);
431
432 res = (res & 0x33) + ((res >> 2) & 0x33);
433 return (res + (res >> 4)) & 0x0F;
434}
435
436int verify_io_u_pattern(char *pattern, unsigned long pattern_size,
437 char *buf, unsigned int len, unsigned int mod)
438{
439 unsigned int i;
440
441 for (i = 0; i < len; i++) {
442 if (buf[i] != pattern[mod]) {
443 unsigned int bits;
444
445 bits = hweight8(buf[i] ^ pattern[mod]);
446 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
447 buf[i], pattern[mod], bits);
448 log_err("fio: bad pattern block offset %u\n", i);
449 return EILSEQ;
450 }
451 mod++;
452 if (mod == pattern_size)
453 mod = 0;
454 }
455
456 return 0;
457}
458
459/*
460 * Push IO verification to a separate thread
461 */
462int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
463{
464 if (io_u->file)
465 put_file_log(td, io_u->file);
466
467 io_u->file = NULL;
468
469 pthread_mutex_lock(&td->io_u_lock);
470
471 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
472 td->cur_depth--;
473 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
474 }
475 flist_del(&io_u->list);
476 flist_add_tail(&io_u->list, &td->verify_list);
477 io_u->flags |= IO_U_F_FREE_DEF;
478 pthread_mutex_unlock(&td->io_u_lock);
479
480 pthread_cond_signal(&td->verify_cond);
481 return 0;
482}
483
484int verify_io_u(struct thread_data *td, struct io_u *io_u)
485{
486 struct verify_header *hdr;
487 unsigned int hdr_size, hdr_inc, hdr_num = 0;
488 void *p;
489 int ret;
490
491 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
492 return 0;
493
494 hdr_inc = io_u->buflen;
495 if (td->o.verify_interval)
496 hdr_inc = td->o.verify_interval;
497
498 ret = 0;
499 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
500 p += hdr_inc, hdr_num++) {
501 struct vcont vc = {
502 .io_u = io_u,
503 .hdr_num = hdr_num,
504 };
505
506 if (ret && td->o.verify_fatal) {
507 td->terminate = 1;
508 break;
509 }
510 hdr_size = __hdr_size(td->o.verify);
511 if (td->o.verify_offset)
512 memswp(p, p + td->o.verify_offset, hdr_size);
513 hdr = p;
514
515 if (hdr->fio_magic != FIO_HDR_MAGIC) {
516 log_err("Bad verify header %x at %llu\n",
517 hdr->fio_magic,
518 io_u->offset + hdr_num * hdr->len);
519 return EILSEQ;
520 }
521
522 if (td->o.verify_pattern_bytes) {
523 dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
524 io_u, hdr->len);
525 ret = verify_io_u_pattern(td->o.verify_pattern,
526 td->o.verify_pattern_bytes,
527 p + hdr_size,
528 hdr_inc - hdr_size,
529 hdr_size % td->o.verify_pattern_bytes);
530 /*
531 * Also verify the meta data, if applicable
532 */
533 if (hdr->verify_type == VERIFY_META)
534 ret |= verify_io_u_meta(hdr, td, &vc);
535
536 if (ret)
537 log_err("fio: verify failed at %llu/%u\n",
538 io_u->offset + hdr_num * hdr->len,
539 hdr->len);
540 continue;
541 }
542
543 switch (hdr->verify_type) {
544 case VERIFY_MD5:
545 ret = verify_io_u_md5(hdr, &vc);
546 break;
547 case VERIFY_CRC64:
548 ret = verify_io_u_crc64(hdr, &vc);
549 break;
550 case VERIFY_CRC32C:
551 case VERIFY_CRC32C_INTEL:
552 ret = verify_io_u_crc32c(hdr, &vc);
553 break;
554 case VERIFY_CRC32:
555 ret = verify_io_u_crc32(hdr, &vc);
556 break;
557 case VERIFY_CRC16:
558 ret = verify_io_u_crc16(hdr, &vc);
559 break;
560 case VERIFY_CRC7:
561 ret = verify_io_u_crc7(hdr, &vc);
562 break;
563 case VERIFY_SHA256:
564 ret = verify_io_u_sha256(hdr, &vc);
565 break;
566 case VERIFY_SHA512:
567 ret = verify_io_u_sha512(hdr, &vc);
568 break;
569 case VERIFY_META:
570 ret = verify_io_u_meta(hdr, td, &vc);
571 break;
572 case VERIFY_SHA1:
573 ret = verify_io_u_sha1(hdr, &vc);
574 break;
575 default:
576 log_err("Bad verify type %u\n", hdr->verify_type);
577 ret = EINVAL;
578 }
579 }
580
581 return ret;
582}
583
584static void fill_meta(struct verify_header *hdr, struct thread_data *td,
585 struct io_u *io_u, unsigned int header_num)
586{
587 struct vhdr_meta *vh = hdr_priv(hdr);
588
589 vh->thread = td->thread_number;
590
591 vh->time_sec = io_u->start_time.tv_sec;
592 vh->time_usec = io_u->start_time.tv_usec;
593
594 vh->numberio = td->io_issues[DDIR_WRITE];
595
596 vh->offset = io_u->offset + header_num * td->o.verify_interval;
597}
598
599static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
600{
601 struct vhdr_sha512 *vh = hdr_priv(hdr);
602 struct sha512_ctx sha512_ctx = {
603 .buf = vh->sha512,
604 };
605
606 sha512_init(&sha512_ctx);
607 sha512_update(&sha512_ctx, p, len);
608}
609
610static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
611{
612 struct vhdr_sha256 *vh = hdr_priv(hdr);
613 struct sha256_ctx sha256_ctx = {
614 .buf = vh->sha256,
615 };
616
617 sha256_init(&sha256_ctx);
618 sha256_update(&sha256_ctx, p, len);
619}
620
621static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
622{
623 struct vhdr_sha1 *vh = hdr_priv(hdr);
624 struct sha1_ctx sha1_ctx = {
625 .H = vh->sha1,
626 };
627
628 sha1_init(&sha1_ctx);
629 sha1_update(&sha1_ctx, p, len);
630}
631
632static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
633{
634 struct vhdr_crc7 *vh = hdr_priv(hdr);
635
636 vh->crc7 = crc7(p, len);
637}
638
639static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
640{
641 struct vhdr_crc16 *vh = hdr_priv(hdr);
642
643 vh->crc16 = crc16(p, len);
644}
645
646static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
647{
648 struct vhdr_crc32 *vh = hdr_priv(hdr);
649
650 vh->crc32 = crc32(p, len);
651}
652
653static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
654{
655 struct vhdr_crc32 *vh = hdr_priv(hdr);
656
657 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
658 vh->crc32 = crc32c_intel(p, len);
659 else
660 vh->crc32 = crc32c(p, len);
661}
662
663static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
664{
665 struct vhdr_crc64 *vh = hdr_priv(hdr);
666
667 vh->crc64 = crc64(p, len);
668}
669
670static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
671{
672 struct vhdr_md5 *vh = hdr_priv(hdr);
673 struct md5_ctx md5_ctx = {
674 .hash = (uint32_t *) vh->md5_digest,
675 };
676
677 md5_init(&md5_ctx);
678 md5_update(&md5_ctx, p, len);
679}
680
681/*
682 * fill body of io_u->buf with random data and add a header with the
683 * crc32 or md5 sum of that data.
684 */
685void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
686{
687 struct verify_header *hdr;
688 void *p = io_u->buf, *data;
689 unsigned int hdr_inc, data_len, header_num = 0;
690
691 if (td->o.verify == VERIFY_NULL)
692 return;
693
694 fill_pattern(td, p, io_u->buflen);
695
696 hdr_inc = io_u->buflen;
697 if (td->o.verify_interval)
698 hdr_inc = td->o.verify_interval;
699
700 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
701 hdr = p;
702
703 hdr->fio_magic = FIO_HDR_MAGIC;
704 hdr->verify_type = td->o.verify;
705 hdr->len = hdr_inc;
706 data_len = hdr_inc - hdr_size(hdr);
707
708 data = p + hdr_size(hdr);
709 switch (td->o.verify) {
710 case VERIFY_MD5:
711 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
712 io_u, hdr->len);
713 fill_md5(hdr, data, data_len);
714 break;
715 case VERIFY_CRC64:
716 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
717 io_u, hdr->len);
718 fill_crc64(hdr, data, data_len);
719 break;
720 case VERIFY_CRC32C:
721 case VERIFY_CRC32C_INTEL:
722 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
723 io_u, hdr->len);
724 fill_crc32c(hdr, data, data_len);
725 break;
726 case VERIFY_CRC32:
727 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
728 io_u, hdr->len);
729 fill_crc32(hdr, data, data_len);
730 break;
731 case VERIFY_CRC16:
732 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
733 io_u, hdr->len);
734 fill_crc16(hdr, data, data_len);
735 break;
736 case VERIFY_CRC7:
737 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
738 io_u, hdr->len);
739 fill_crc7(hdr, data, data_len);
740 break;
741 case VERIFY_SHA256:
742 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
743 io_u, hdr->len);
744 fill_sha256(hdr, data, data_len);
745 break;
746 case VERIFY_SHA512:
747 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
748 io_u, hdr->len);
749 fill_sha512(hdr, data, data_len);
750 break;
751 case VERIFY_META:
752 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
753 io_u, hdr->len);
754 fill_meta(hdr, td, io_u, header_num);
755 break;
756 case VERIFY_SHA1:
757 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
758 io_u, hdr->len);
759 fill_sha1(hdr, data, data_len);
760 break;
761 default:
762 log_err("fio: bad verify type: %d\n", td->o.verify);
763 assert(0);
764 }
765 if (td->o.verify_offset)
766 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
767 header_num++;
768 }
769}
770
771int get_next_verify(struct thread_data *td, struct io_u *io_u)
772{
773 struct io_piece *ipo = NULL;
774
775 /*
776 * this io_u is from a requeue, we already filled the offsets
777 */
778 if (io_u->file)
779 return 0;
780
781 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
782 struct rb_node *n = rb_first(&td->io_hist_tree);
783
784 ipo = rb_entry(n, struct io_piece, rb_node);
785 rb_erase(n, &td->io_hist_tree);
786 td->io_hist_len--;
787 } else if (!flist_empty(&td->io_hist_list)) {
788 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
789 td->io_hist_len--;
790 flist_del(&ipo->list);
791 }
792
793 if (ipo) {
794 io_u->offset = ipo->offset;
795 io_u->buflen = ipo->len;
796 io_u->file = ipo->file;
797
798 if (!fio_file_open(io_u->file)) {
799 int r = td_io_open_file(td, io_u->file);
800
801 if (r) {
802 dprint(FD_VERIFY, "failed file %s open\n",
803 io_u->file->file_name);
804 return 1;
805 }
806 }
807
808 get_file(ipo->file);
809 assert(fio_file_open(io_u->file));
810 io_u->ddir = DDIR_READ;
811 io_u->xfer_buf = io_u->buf;
812 io_u->xfer_buflen = io_u->buflen;
813 free(ipo);
814 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
815 return 0;
816 }
817
818 dprint(FD_VERIFY, "get_next_verify: empty\n");
819 return 1;
820}
821
822static void *verify_async_thread(void *data)
823{
824 struct thread_data *td = data;
825 struct io_u *io_u;
826 int ret = 0;
827
828 if (td->o.verify_cpumask_set &&
829 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
830 log_err("fio: failed setting verify thread affinity\n");
831 goto done;
832 }
833
834 do {
835 FLIST_HEAD(list);
836
837 read_barrier();
838 if (td->verify_thread_exit)
839 break;
840
841 pthread_mutex_lock(&td->io_u_lock);
842
843 while (flist_empty(&td->verify_list) &&
844 !td->verify_thread_exit) {
845 ret = pthread_cond_wait(&td->verify_cond,
846 &td->io_u_lock);
847 if (ret) {
848 pthread_mutex_unlock(&td->io_u_lock);
849 break;
850 }
851 }
852
853 flist_splice_init(&td->verify_list, &list);
854 pthread_mutex_unlock(&td->io_u_lock);
855
856 if (flist_empty(&list))
857 continue;
858
859 while (!flist_empty(&list)) {
860 io_u = flist_entry(list.next, struct io_u, list);
861 flist_del_init(&io_u->list);
862
863 ret = verify_io_u(td, io_u);
864 put_io_u(td, io_u);
865 if (!ret)
866 continue;
867 if (td->o.continue_on_error &&
868 td_non_fatal_error(ret)) {
869 update_error_count(td, ret);
870 td_clear_error(td);
871 ret = 0;
872 }
873 }
874 } while (!ret);
875
876 if (ret) {
877 td_verror(td, ret, "async_verify");
878 td->terminate = 1;
879 }
880
881done:
882 pthread_mutex_lock(&td->io_u_lock);
883 td->nr_verify_threads--;
884 pthread_mutex_unlock(&td->io_u_lock);
885
886 pthread_cond_signal(&td->free_cond);
887 return NULL;
888}
889
890int verify_async_init(struct thread_data *td)
891{
892 int i, ret;
893
894 td->verify_thread_exit = 0;
895
896 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
897 for (i = 0; i < td->o.verify_async; i++) {
898 ret = pthread_create(&td->verify_threads[i], NULL,
899 verify_async_thread, td);
900 if (ret) {
901 log_err("fio: async verify creation failed: %s\n",
902 strerror(ret));
903 break;
904 }
905 ret = pthread_detach(td->verify_threads[i]);
906 if (ret) {
907 log_err("fio: async verify thread detach failed: %s\n",
908 strerror(ret));
909 break;
910 }
911 td->nr_verify_threads++;
912 }
913
914 if (i != td->o.verify_async) {
915 log_err("fio: only %d verify threads started, exiting\n", i);
916 td->verify_thread_exit = 1;
917 write_barrier();
918 pthread_cond_broadcast(&td->verify_cond);
919 return 1;
920 }
921
922 return 0;
923}
924
925void verify_async_exit(struct thread_data *td)
926{
927 td->verify_thread_exit = 1;
928 write_barrier();
929 pthread_cond_broadcast(&td->verify_cond);
930
931 pthread_mutex_lock(&td->io_u_lock);
932
933 while (td->nr_verify_threads)
934 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
935
936 pthread_mutex_unlock(&td->io_u_lock);
937 free(td->verify_threads);
938 td->verify_threads = NULL;
939}
fio - Flexible IO Tester