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Fio 1.34.2
[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, len);
57 break;
58 case 2:
59 case 3:
60 case 4: {
61 unsigned int pattern = td->o.verify_pattern;
62 unsigned int i = 0;
63 unsigned char c1, c2, c3, c4;
64 unsigned char *b = p;
65
66 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
67 td->o.verify_pattern_bytes, len);
68
69 c1 = pattern & 0xff;
70 pattern >>= 8;
71 c2 = pattern & 0xff;
72 pattern >>= 8;
73 c3 = pattern & 0xff;
74 pattern >>= 8;
75 c4 = pattern & 0xff;
76
77 while (i < len) {
78 b[i++] = c1;
79 if (i == len)
80 break;
81 b[i++] = c2;
82 if (td->o.verify_pattern_bytes == 2 || i == len)
83 continue;
84 b[i++] = c3;
85 if (td->o.verify_pattern_bytes == 3 || i == len)
86 continue;
87 b[i++] = c4;
88 }
89 break;
90 }
91 }
92}
93
94static void memswp(void *buf1, void *buf2, unsigned int len)
95{
96 char swap[200];
97
98 assert(len <= sizeof(swap));
99
100 memcpy(&swap, buf1, len);
101 memcpy(buf1, buf2, len);
102 memcpy(buf2, &swap, len);
103}
104
105static void hexdump(void *buffer, int len)
106{
107 unsigned char *p = buffer;
108 int i;
109
110 for (i = 0; i < len; i++)
111 log_info("%02x", p[i]);
112 log_info("\n");
113}
114
115/*
116 * Prepare for seperation of verify_header and checksum header
117 */
118static inline unsigned int __hdr_size(int verify_type)
119{
120 unsigned int len = len;
121
122 switch (verify_type) {
123 case VERIFY_NONE:
124 case VERIFY_NULL:
125 len = 0;
126 break;
127 case VERIFY_MD5:
128 len = sizeof(struct vhdr_md5);
129 break;
130 case VERIFY_CRC64:
131 len = sizeof(struct vhdr_crc64);
132 break;
133 case VERIFY_CRC32C:
134 case VERIFY_CRC32:
135 case VERIFY_CRC32C_INTEL:
136 len = sizeof(struct vhdr_crc32);
137 break;
138 case VERIFY_CRC16:
139 len = sizeof(struct vhdr_crc16);
140 break;
141 case VERIFY_CRC7:
142 len = sizeof(struct vhdr_crc7);
143 break;
144 case VERIFY_SHA256:
145 len = sizeof(struct vhdr_sha256);
146 break;
147 case VERIFY_SHA512:
148 len = sizeof(struct vhdr_sha512);
149 break;
150 case VERIFY_META:
151 len = sizeof(struct vhdr_meta);
152 break;
153 case VERIFY_SHA1:
154 len = sizeof(struct vhdr_sha1);
155 break;
156 default:
157 log_err("fio: unknown verify header!\n");
158 assert(0);
159 }
160
161 return len + sizeof(struct verify_header);
162}
163
164static inline unsigned int hdr_size(struct verify_header *hdr)
165{
166 return __hdr_size(hdr->verify_type);
167}
168
169static void *hdr_priv(struct verify_header *hdr)
170{
171 void *priv = hdr;
172
173 return priv + sizeof(struct verify_header);
174}
175
176/*
177 * Return data area 'header_num'
178 */
179static inline void *io_u_verify_off(struct verify_header *hdr,
180 struct io_u *io_u, unsigned char header_num)
181{
182 return io_u->buf + header_num * hdr->len + hdr_size(hdr);
183}
184
185static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
186 struct io_u *io_u, unsigned int header_num)
187{
188 struct vhdr_meta *vh = hdr_priv(hdr);
189
190 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
191
192 if (vh->offset != io_u->offset + header_num * td->o.verify_interval) {
193 log_err("meta: verify failed at %llu/%u\n",
194 io_u->offset + header_num * hdr->len, hdr->len);
195 return EILSEQ;
196 }
197
198 return 0;
199}
200
201static int verify_io_u_sha512(struct verify_header *hdr, struct io_u *io_u,
202 unsigned int header_num)
203{
204 void *p = io_u_verify_off(hdr, io_u, header_num);
205 struct vhdr_sha512 *vh = hdr_priv(hdr);
206 uint8_t sha512[128];
207 struct sha512_ctx sha512_ctx = {
208 .buf = sha512,
209 };
210
211 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", io_u, hdr->len);
212
213 sha512_init(&sha512_ctx);
214 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
215
216 if (memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512))) {
217 log_err("sha512: verify failed at %llu/%u\n",
218 io_u->offset + header_num * hdr->len, hdr->len);
219 hexdump(vh->sha512, sizeof(vh->sha512));
220 hexdump(sha512_ctx.buf, sizeof(sha512));
221 return EILSEQ;
222 }
223
224 return 0;
225}
226
227static int verify_io_u_sha256(struct verify_header *hdr, struct io_u *io_u,
228 unsigned int header_num)
229{
230 void *p = io_u_verify_off(hdr, io_u, header_num);
231 struct vhdr_sha256 *vh = hdr_priv(hdr);
232 uint8_t sha256[128];
233 struct sha256_ctx sha256_ctx = {
234 .buf = sha256,
235 };
236
237 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", io_u, hdr->len);
238
239 sha256_init(&sha256_ctx);
240 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
241
242 if (memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256))) {
243 log_err("sha256: verify failed at %llu/%u\n",
244 io_u->offset + header_num * hdr->len, hdr->len);
245 hexdump(vh->sha256, sizeof(vh->sha256));
246 hexdump(sha256_ctx.buf, sizeof(sha256));
247 return EILSEQ;
248 }
249
250 return 0;
251}
252
253static int verify_io_u_sha1(struct verify_header *hdr, struct io_u *io_u,
254 unsigned int header_num)
255{
256 void *p = io_u_verify_off(hdr, io_u, header_num);
257 struct vhdr_sha1 *vh = hdr_priv(hdr);
258 uint32_t sha1[5];
259 struct sha1_ctx sha1_ctx = {
260 .H = sha1,
261 };
262
263 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", io_u, hdr->len);
264
265 sha1_init(&sha1_ctx);
266 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
267
268 if (memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1))) {
269 log_err("sha1: verify failed at %llu/%u\n",
270 io_u->offset + header_num * hdr->len, hdr->len);
271 hexdump(vh->sha1, sizeof(vh->sha1));
272 hexdump(sha1_ctx.H, sizeof(sha1));
273 return EILSEQ;
274 }
275
276 return 0;
277}
278
279static int verify_io_u_crc7(struct verify_header *hdr, struct io_u *io_u,
280 unsigned char header_num)
281{
282 void *p = io_u_verify_off(hdr, io_u, header_num);
283 struct vhdr_crc7 *vh = hdr_priv(hdr);
284 unsigned char c;
285
286 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", io_u, hdr->len);
287
288 c = crc7(p, hdr->len - hdr_size(hdr));
289
290 if (c != vh->crc7) {
291 log_err("crc7: verify failed at %llu/%u\n",
292 io_u->offset + header_num * hdr->len, hdr->len);
293 log_err("crc7: wanted %x, got %x\n", vh->crc7, c);
294 return EILSEQ;
295 }
296
297 return 0;
298}
299
300static int verify_io_u_crc16(struct verify_header *hdr, struct io_u *io_u,
301 unsigned int header_num)
302{
303 void *p = io_u_verify_off(hdr, io_u, header_num);
304 struct vhdr_crc16 *vh = hdr_priv(hdr);
305 unsigned short c;
306
307 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", io_u, hdr->len);
308
309 c = crc16(p, hdr->len - hdr_size(hdr));
310
311 if (c != vh->crc16) {
312 log_err("crc16: verify failed at %llu/%u\n",
313 io_u->offset + header_num * hdr->len, hdr->len);
314 log_err("crc16: wanted %x, got %x\n", vh->crc16, c);
315 return EILSEQ;
316 }
317
318 return 0;
319}
320
321static int verify_io_u_crc64(struct verify_header *hdr, struct io_u *io_u,
322 unsigned int header_num)
323{
324 void *p = io_u_verify_off(hdr, io_u, header_num);
325 struct vhdr_crc64 *vh = hdr_priv(hdr);
326 unsigned long long c;
327
328 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", io_u, hdr->len);
329
330 c = crc64(p, hdr->len - hdr_size(hdr));
331
332 if (c != vh->crc64) {
333 log_err("crc64: verify failed at %llu/%u\n",
334 io_u->offset + header_num * hdr->len,
335 hdr->len);
336 log_err("crc64: wanted %llx, got %llx\n",
337 (unsigned long long) vh->crc64, c);
338 return EILSEQ;
339 }
340
341 return 0;
342}
343
344static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u,
345 unsigned int header_num)
346{
347 void *p = io_u_verify_off(hdr, io_u, header_num);
348 struct vhdr_crc32 *vh = hdr_priv(hdr);
349 uint32_t c;
350
351 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", io_u, hdr->len);
352
353 c = crc32(p, hdr->len - hdr_size(hdr));
354
355 if (c != vh->crc32) {
356 log_err("crc32: verify failed at %llu/%u\n",
357 io_u->offset + header_num * hdr->len, hdr->len);
358 log_err("crc32: wanted %x, got %x\n", vh->crc32, c);
359 return EILSEQ;
360 }
361
362 return 0;
363}
364
365static int verify_io_u_crc32c(struct verify_header *hdr, struct io_u *io_u,
366 unsigned int header_num)
367{
368 void *p = io_u_verify_off(hdr, io_u, header_num);
369 struct vhdr_crc32 *vh = hdr_priv(hdr);
370 uint32_t c;
371
372 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", io_u, hdr->len);
373
374 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
375 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
376 else
377 c = crc32c(p, hdr->len - hdr_size(hdr));
378
379 if (c != vh->crc32) {
380 log_err("crc32c: verify failed at %llu/%u\n",
381 io_u->offset + header_num * hdr->len, hdr->len);
382 log_err("crc32c: wanted %x, got %x\n", vh->crc32, c);
383 return EILSEQ;
384 }
385
386 return 0;
387}
388
389static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u,
390 unsigned int header_num)
391{
392 void *p = io_u_verify_off(hdr, io_u, header_num);
393 struct vhdr_md5 *vh = hdr_priv(hdr);
394 uint32_t hash[MD5_HASH_WORDS];
395 struct md5_ctx md5_ctx = {
396 .hash = hash,
397 };
398
399 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", io_u, hdr->len);
400
401 md5_init(&md5_ctx);
402 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
403
404 if (memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash))) {
405 log_err("md5: verify failed at %llu/%u\n",
406 io_u->offset + header_num * hdr->len, hdr->len);
407 hexdump(vh->md5_digest, sizeof(vh->md5_digest));
408 hexdump(md5_ctx.hash, sizeof(hash));
409 return EILSEQ;
410 }
411
412 return 0;
413}
414
415static unsigned int hweight8(unsigned int w)
416{
417 unsigned int res = w - ((w >> 1) & 0x55);
418
419 res = (res & 0x33) + ((res >> 2) & 0x33);
420 return (res + (res >> 4)) & 0x0F;
421}
422
423int verify_io_u_pattern(unsigned long pattern, unsigned long pattern_size,
424 char *buf, unsigned int len, unsigned int mod)
425{
426 unsigned int i;
427 char split_pattern[4];
428
429 for (i = 0; i < 4; i++) {
430 split_pattern[i] = pattern & 0xff;
431 pattern >>= 8;
432 }
433
434 for (i = 0; i < len; i++) {
435 if (buf[i] != split_pattern[mod]) {
436 unsigned int bits;
437
438 bits = hweight8(buf[i] ^ split_pattern[mod]);
439 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
440 buf[i], split_pattern[mod], bits);
441 log_err("fio: bad pattern block offset %u\n", i);
442 return EILSEQ;
443 }
444 mod++;
445 if (mod == pattern_size)
446 mod = 0;
447 }
448
449 return 0;
450}
451
452/*
453 * Push IO verification to a separate thread
454 */
455int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
456{
457 if (io_u->file)
458 put_file_log(td, io_u->file);
459
460 io_u->file = NULL;
461
462 pthread_mutex_lock(&td->io_u_lock);
463 flist_del(&io_u->list);
464 flist_add_tail(&io_u->list, &td->verify_list);
465 pthread_mutex_unlock(&td->io_u_lock);
466
467 pthread_cond_signal(&td->verify_cond);
468 io_u->flags |= IO_U_F_FREE_DEF;
469 return 0;
470}
471
472int verify_io_u(struct thread_data *td, struct io_u *io_u)
473{
474 struct verify_header *hdr;
475 unsigned int hdr_size, hdr_inc, hdr_num = 0;
476 void *p;
477 int ret;
478
479 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
480 return 0;
481
482 hdr_inc = io_u->buflen;
483 if (td->o.verify_interval)
484 hdr_inc = td->o.verify_interval;
485
486 ret = 0;
487 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
488 p += hdr_inc, hdr_num++) {
489 if (ret && td->o.verify_fatal) {
490 td->terminate = 1;
491 break;
492 }
493 hdr_size = __hdr_size(td->o.verify);
494 if (td->o.verify_offset)
495 memswp(p, p + td->o.verify_offset, hdr_size);
496 hdr = p;
497
498 if (hdr->fio_magic != FIO_HDR_MAGIC) {
499 log_err("Bad verify header %x\n", hdr->fio_magic);
500 return EILSEQ;
501 }
502
503 if (td->o.verify_pattern_bytes) {
504 dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
505 io_u, hdr->len);
506 ret = verify_io_u_pattern(td->o.verify_pattern,
507 td->o.verify_pattern_bytes,
508 p + hdr_size,
509 hdr_inc - hdr_size,
510 hdr_size % 4);
511 /*
512 * Also verify the meta data, if applicable
513 */
514 if (hdr->verify_type == VERIFY_META)
515 ret |= verify_io_u_meta(hdr, td, io_u, hdr_num);
516
517 if (ret)
518 log_err("fio: verify failed at %llu/%u\n",
519 io_u->offset + hdr_num * hdr->len,
520 hdr->len);
521 continue;
522 }
523
524 switch (hdr->verify_type) {
525 case VERIFY_MD5:
526 ret = verify_io_u_md5(hdr, io_u, hdr_num);
527 break;
528 case VERIFY_CRC64:
529 ret = verify_io_u_crc64(hdr, io_u, hdr_num);
530 break;
531 case VERIFY_CRC32C:
532 case VERIFY_CRC32C_INTEL:
533 ret = verify_io_u_crc32c(hdr, io_u, hdr_num);
534 break;
535 case VERIFY_CRC32:
536 ret = verify_io_u_crc32(hdr, io_u, hdr_num);
537 break;
538 case VERIFY_CRC16:
539 ret = verify_io_u_crc16(hdr, io_u, hdr_num);
540 break;
541 case VERIFY_CRC7:
542 ret = verify_io_u_crc7(hdr, io_u, hdr_num);
543 break;
544 case VERIFY_SHA256:
545 ret = verify_io_u_sha256(hdr, io_u, hdr_num);
546 break;
547 case VERIFY_SHA512:
548 ret = verify_io_u_sha512(hdr, io_u, hdr_num);
549 break;
550 case VERIFY_META:
551 ret = verify_io_u_meta(hdr, td, io_u, hdr_num);
552 break;
553 case VERIFY_SHA1:
554 ret = verify_io_u_sha1(hdr, io_u, hdr_num);
555 break;
556 default:
557 log_err("Bad verify type %u\n", hdr->verify_type);
558 ret = EINVAL;
559 }
560 }
561
562 return ret;
563}
564
565static void fill_meta(struct verify_header *hdr, struct thread_data *td,
566 struct io_u *io_u, unsigned int header_num)
567{
568 struct vhdr_meta *vh = hdr_priv(hdr);
569
570 vh->thread = td->thread_number;
571
572 vh->time_sec = io_u->start_time.tv_sec;
573 vh->time_usec = io_u->start_time.tv_usec;
574
575 vh->numberio = td->io_issues[DDIR_WRITE];
576
577 vh->offset = io_u->offset + header_num * td->o.verify_interval;
578}
579
580static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
581{
582 struct vhdr_sha512 *vh = hdr_priv(hdr);
583 struct sha512_ctx sha512_ctx = {
584 .buf = vh->sha512,
585 };
586
587 sha512_init(&sha512_ctx);
588 sha512_update(&sha512_ctx, p, len);
589}
590
591static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
592{
593 struct vhdr_sha256 *vh = hdr_priv(hdr);
594 struct sha256_ctx sha256_ctx = {
595 .buf = vh->sha256,
596 };
597
598 sha256_init(&sha256_ctx);
599 sha256_update(&sha256_ctx, p, len);
600}
601
602static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
603{
604 struct vhdr_sha1 *vh = hdr_priv(hdr);
605 struct sha1_ctx sha1_ctx = {
606 .H = vh->sha1,
607 };
608
609 sha1_init(&sha1_ctx);
610 sha1_update(&sha1_ctx, p, len);
611}
612
613static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
614{
615 struct vhdr_crc7 *vh = hdr_priv(hdr);
616
617 vh->crc7 = crc7(p, len);
618}
619
620static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
621{
622 struct vhdr_crc16 *vh = hdr_priv(hdr);
623
624 vh->crc16 = crc16(p, len);
625}
626
627static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
628{
629 struct vhdr_crc32 *vh = hdr_priv(hdr);
630
631 vh->crc32 = crc32(p, len);
632}
633
634static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
635{
636 struct vhdr_crc32 *vh = hdr_priv(hdr);
637
638 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
639 vh->crc32 = crc32c_intel(p, len);
640 else
641 vh->crc32 = crc32c(p, len);
642}
643
644static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
645{
646 struct vhdr_crc64 *vh = hdr_priv(hdr);
647
648 vh->crc64 = crc64(p, len);
649}
650
651static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
652{
653 struct vhdr_md5 *vh = hdr_priv(hdr);
654 struct md5_ctx md5_ctx = {
655 .hash = (uint32_t *) vh->md5_digest,
656 };
657
658 md5_init(&md5_ctx);
659 md5_update(&md5_ctx, p, len);
660}
661
662/*
663 * fill body of io_u->buf with random data and add a header with the
664 * crc32 or md5 sum of that data.
665 */
666void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
667{
668 struct verify_header *hdr;
669 void *p = io_u->buf, *data;
670 unsigned int hdr_inc, data_len, header_num = 0;
671
672 if (td->o.verify == VERIFY_NULL)
673 return;
674
675 fill_pattern(td, p, io_u->buflen);
676
677 hdr_inc = io_u->buflen;
678 if (td->o.verify_interval)
679 hdr_inc = td->o.verify_interval;
680
681 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
682 hdr = p;
683
684 hdr->fio_magic = FIO_HDR_MAGIC;
685 hdr->verify_type = td->o.verify;
686 hdr->len = hdr_inc;
687 data_len = hdr_inc - hdr_size(hdr);
688
689 data = p + hdr_size(hdr);
690 switch (td->o.verify) {
691 case VERIFY_MD5:
692 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
693 io_u, hdr->len);
694 fill_md5(hdr, data, data_len);
695 break;
696 case VERIFY_CRC64:
697 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
698 io_u, hdr->len);
699 fill_crc64(hdr, data, data_len);
700 break;
701 case VERIFY_CRC32C:
702 case VERIFY_CRC32C_INTEL:
703 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
704 io_u, hdr->len);
705 fill_crc32c(hdr, data, data_len);
706 break;
707 case VERIFY_CRC32:
708 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
709 io_u, hdr->len);
710 fill_crc32(hdr, data, data_len);
711 break;
712 case VERIFY_CRC16:
713 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
714 io_u, hdr->len);
715 fill_crc16(hdr, data, data_len);
716 break;
717 case VERIFY_CRC7:
718 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
719 io_u, hdr->len);
720 fill_crc7(hdr, data, data_len);
721 break;
722 case VERIFY_SHA256:
723 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
724 io_u, hdr->len);
725 fill_sha256(hdr, data, data_len);
726 break;
727 case VERIFY_SHA512:
728 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
729 io_u, hdr->len);
730 fill_sha512(hdr, data, data_len);
731 break;
732 case VERIFY_META:
733 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
734 io_u, hdr->len);
735 fill_meta(hdr, td, io_u, header_num);
736 break;
737 case VERIFY_SHA1:
738 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
739 io_u, hdr->len);
740 fill_sha1(hdr, data, data_len);
741 break;
742 default:
743 log_err("fio: bad verify type: %d\n", td->o.verify);
744 assert(0);
745 }
746 if (td->o.verify_offset)
747 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
748 header_num++;
749 }
750}
751
752int get_next_verify(struct thread_data *td, struct io_u *io_u)
753{
754 struct io_piece *ipo = NULL;
755
756 /*
757 * this io_u is from a requeue, we already filled the offsets
758 */
759 if (io_u->file)
760 return 0;
761
762 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
763 struct rb_node *n = rb_first(&td->io_hist_tree);
764
765 ipo = rb_entry(n, struct io_piece, rb_node);
766 rb_erase(n, &td->io_hist_tree);
767 } else if (!flist_empty(&td->io_hist_list)) {
768 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
769 flist_del(&ipo->list);
770 }
771
772 if (ipo) {
773 io_u->offset = ipo->offset;
774 io_u->buflen = ipo->len;
775 io_u->file = ipo->file;
776
777 if (!fio_file_open(io_u->file)) {
778 int r = td_io_open_file(td, io_u->file);
779
780 if (r) {
781 dprint(FD_VERIFY, "failed file %s open\n",
782 io_u->file->file_name);
783 return 1;
784 }
785 }
786
787 get_file(ipo->file);
788 assert(fio_file_open(io_u->file));
789 io_u->ddir = DDIR_READ;
790 io_u->xfer_buf = io_u->buf;
791 io_u->xfer_buflen = io_u->buflen;
792 free(ipo);
793 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
794 return 0;
795 }
796
797 dprint(FD_VERIFY, "get_next_verify: empty\n");
798 return 1;
799}
800
801static void *verify_async_thread(void *data)
802{
803 struct thread_data *td = data;
804 struct io_u *io_u;
805 int ret = 0;
806
807 if (td->o.verify_cpumask_set &&
808 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
809 log_err("fio: failed setting verify thread affinity\n");
810 goto done;
811 }
812
813 do {
814 FLIST_HEAD(list);
815
816 read_barrier();
817 if (td->verify_thread_exit)
818 break;
819
820 pthread_mutex_lock(&td->io_u_lock);
821
822 while (flist_empty(&td->verify_list) &&
823 !td->verify_thread_exit) {
824 ret = pthread_cond_wait(&td->verify_cond,
825 &td->io_u_lock);
826 if (ret) {
827 pthread_mutex_unlock(&td->io_u_lock);
828 break;
829 }
830 }
831
832 flist_splice_init(&td->verify_list, &list);
833 pthread_mutex_unlock(&td->io_u_lock);
834
835 if (flist_empty(&list))
836 continue;
837
838 while (!flist_empty(&list)) {
839 io_u = flist_entry(list.next, struct io_u, list);
840 flist_del_init(&io_u->list);
841
842 ret = verify_io_u(td, io_u);
843 put_io_u(td, io_u);
844 if (!ret)
845 continue;
846 if (td->o.continue_on_error &&
847 td_non_fatal_error(ret)) {
848 update_error_count(td, ret);
849 td_clear_error(td);
850 ret = 0;
851 }
852 }
853 } while (!ret);
854
855 if (ret) {
856 td_verror(td, ret, "async_verify");
857 td->terminate = 1;
858 }
859
860done:
861 pthread_mutex_lock(&td->io_u_lock);
862 td->nr_verify_threads--;
863 pthread_mutex_unlock(&td->io_u_lock);
864
865 pthread_cond_signal(&td->free_cond);
866 return NULL;
867}
868
869int verify_async_init(struct thread_data *td)
870{
871 int i, ret;
872
873 td->verify_thread_exit = 0;
874
875 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
876 for (i = 0; i < td->o.verify_async; i++) {
877 ret = pthread_create(&td->verify_threads[i], NULL,
878 verify_async_thread, td);
879 if (ret) {
880 log_err("fio: async verify creation failed: %s\n",
881 strerror(ret));
882 break;
883 }
884 ret = pthread_detach(td->verify_threads[i]);
885 if (ret) {
886 log_err("fio: async verify thread detach failed: %s\n",
887 strerror(ret));
888 break;
889 }
890 td->nr_verify_threads++;
891 }
892
893 if (i != td->o.verify_async) {
894 log_err("fio: only %d verify threads started, exiting\n", i);
895 td->verify_thread_exit = 1;
896 write_barrier();
897 pthread_cond_broadcast(&td->verify_cond);
898 return 1;
899 }
900
901 return 0;
902}
903
904void verify_async_exit(struct thread_data *td)
905{
906 td->verify_thread_exit = 1;
907 write_barrier();
908 pthread_cond_broadcast(&td->verify_cond);
909
910 pthread_mutex_lock(&td->io_u_lock);
911
912 while (td->nr_verify_threads)
913 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
914
915 pthread_mutex_unlock(&td->io_u_lock);
916 free(td->verify_threads);
917 td->verify_threads = NULL;
918}
fio - Flexible IO Tester