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Fio 1.50-rc2
[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#include "trim.h"
14#include "lib/rand.h"
15
16#include "crc/md5.h"
17#include "crc/crc64.h"
18#include "crc/crc32.h"
19#include "crc/crc32c.h"
20#include "crc/crc16.h"
21#include "crc/crc7.h"
22#include "crc/sha256.h"
23#include "crc/sha512.h"
24#include "crc/sha1.h"
25
26static void populate_hdr(struct thread_data *td, struct io_u *io_u,
27 struct verify_header *hdr, unsigned int header_num,
28 unsigned int header_len);
29
30void fill_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed)
31{
32 switch (td->o.verify_pattern_bytes) {
33 case 0:
34 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
35 if (use_seed)
36 __fill_random_buf(p, len, seed);
37 else
38 io_u->rand_seed = fill_random_buf(p, len);
39 break;
40 case 1:
41 if (io_u->buf_filled_len >= len) {
42 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
43 return;
44 }
45 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
46 memset(p, td->o.verify_pattern[0], len);
47 io_u->buf_filled_len = len;
48 break;
49 default: {
50 unsigned int i = 0, size = 0;
51 unsigned char *b = p;
52
53 if (io_u->buf_filled_len >= len) {
54 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
55 td->o.verify_pattern_bytes, len);
56 return;
57 }
58 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
59 td->o.verify_pattern_bytes, len);
60
61 while (i < len) {
62 size = td->o.verify_pattern_bytes;
63 if (size > (len - i))
64 size = len - i;
65 memcpy(b+i, td->o.verify_pattern, size);
66 i += size;
67 }
68 io_u->buf_filled_len = len;
69 break;
70 }
71 }
72}
73
74static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
75 unsigned long seed, int use_seed)
76{
77 unsigned int hdr_inc, header_num;
78 struct verify_header *hdr;
79 void *p = io_u->buf;
80
81 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
82
83 hdr_inc = io_u->buflen;
84 if (td->o.verify_interval)
85 hdr_inc = td->o.verify_interval;
86
87 header_num = 0;
88 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
89 hdr = p;
90 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
91 header_num++;
92 }
93}
94
95static void memswp(void *buf1, void *buf2, unsigned int len)
96{
97 char swap[200];
98
99 assert(len <= sizeof(swap));
100
101 memcpy(&swap, buf1, len);
102 memcpy(buf1, buf2, len);
103 memcpy(buf2, &swap, len);
104}
105
106static void hexdump(void *buffer, int len)
107{
108 unsigned char *p = buffer;
109 int i;
110
111 for (i = 0; i < len; i++)
112 log_err("%02x", p[i]);
113 log_err("\n");
114}
115
116/*
117 * Prepare for seperation of verify_header and checksum header
118 */
119static inline unsigned int __hdr_size(int verify_type)
120{
121 unsigned int len = 0;
122
123 switch (verify_type) {
124 case VERIFY_NONE:
125 case VERIFY_NULL:
126 len = 0;
127 break;
128 case VERIFY_MD5:
129 len = sizeof(struct vhdr_md5);
130 break;
131 case VERIFY_CRC64:
132 len = sizeof(struct vhdr_crc64);
133 break;
134 case VERIFY_CRC32C:
135 case VERIFY_CRC32:
136 case VERIFY_CRC32C_INTEL:
137 len = sizeof(struct vhdr_crc32);
138 break;
139 case VERIFY_CRC16:
140 len = sizeof(struct vhdr_crc16);
141 break;
142 case VERIFY_CRC7:
143 len = sizeof(struct vhdr_crc7);
144 break;
145 case VERIFY_SHA256:
146 len = sizeof(struct vhdr_sha256);
147 break;
148 case VERIFY_SHA512:
149 len = sizeof(struct vhdr_sha512);
150 break;
151 case VERIFY_META:
152 len = sizeof(struct vhdr_meta);
153 break;
154 case VERIFY_SHA1:
155 len = sizeof(struct vhdr_sha1);
156 break;
157 default:
158 log_err("fio: unknown verify header!\n");
159 assert(0);
160 }
161
162 return len + sizeof(struct verify_header);
163}
164
165static inline unsigned int hdr_size(struct verify_header *hdr)
166{
167 return __hdr_size(hdr->verify_type);
168}
169
170static void *hdr_priv(struct verify_header *hdr)
171{
172 void *priv = hdr;
173
174 return priv + sizeof(struct verify_header);
175}
176
177/*
178 * Verify container, pass info to verify handlers and allow them to
179 * pass info back in case of error
180 */
181struct vcont {
182 /*
183 * Input
184 */
185 struct io_u *io_u;
186 unsigned int hdr_num;
187 struct thread_data *td;
188
189 /*
190 * Output, only valid in case of error
191 */
192 const char *name;
193 void *good_crc;
194 void *bad_crc;
195 unsigned int crc_len;
196};
197
198static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
199 const char *type, struct fio_file *f)
200{
201 char fname[256];
202 int ret, fd;
203
204 strcpy(fname, f->file_name);
205 basename(fname);
206
207 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
208
209 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
210 if (fd < 0) {
211 perror("open verify buf file");
212 return;
213 }
214
215 while (len) {
216 ret = write(fd, buf, len);
217 if (!ret)
218 break;
219 else if (ret < 0) {
220 perror("write verify buf file");
221 break;
222 }
223 len -= ret;
224 buf += ret;
225 }
226
227 close(fd);
228 log_err(" %s data dumped as %s\n", type, fname);
229}
230
231/*
232 * Dump the contents of the read block and re-generate the correct data
233 * and dump that too.
234 */
235static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
236{
237 struct thread_data *td = vc->td;
238 struct io_u *io_u = vc->io_u;
239 unsigned long hdr_offset;
240 struct io_u dummy;
241 void *buf;
242
243 /*
244 * Dump the contents we just read off disk
245 */
246 hdr_offset = vc->hdr_num * hdr->len;
247
248 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
249 "received", vc->io_u->file);
250
251 /*
252 * Allocate a new buf and re-generate the original data
253 */
254 buf = malloc(io_u->buflen);
255 dummy = *io_u;
256 dummy.buf = buf;
257 dummy.rand_seed = hdr->rand_seed;
258
259 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
260
261 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
262 "expected", vc->io_u->file);
263 free(buf);
264}
265
266static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
267{
268 unsigned long long offset;
269
270 offset = vc->io_u->offset;
271 offset += vc->hdr_num * hdr->len;
272 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
273 vc->name, vc->io_u->file->file_name, offset, hdr->len);
274
275 if (vc->good_crc && vc->bad_crc) {
276 log_err(" Expected CRC: ");
277 hexdump(vc->good_crc, vc->crc_len);
278 log_err(" Received CRC: ");
279 hexdump(vc->bad_crc, vc->crc_len);
280 }
281
282 dump_verify_buffers(hdr, vc);
283}
284
285/*
286 * Return data area 'header_num'
287 */
288static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
289{
290 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
291}
292
293static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
294 struct vcont *vc)
295{
296 struct vhdr_meta *vh = hdr_priv(hdr);
297 struct io_u *io_u = vc->io_u;
298
299 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
300
301 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
302 return 0;
303
304 vc->name = "meta";
305 log_verify_failure(hdr, vc);
306 return EILSEQ;
307}
308
309static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
310{
311 void *p = io_u_verify_off(hdr, vc);
312 struct vhdr_sha512 *vh = hdr_priv(hdr);
313 uint8_t sha512[128];
314 struct sha512_ctx sha512_ctx = {
315 .buf = sha512,
316 };
317
318 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
319
320 sha512_init(&sha512_ctx);
321 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
322
323 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
324 return 0;
325
326 vc->name = "sha512";
327 vc->good_crc = vh->sha512;
328 vc->bad_crc = sha512_ctx.buf;
329 vc->crc_len = sizeof(vh->sha512);
330 log_verify_failure(hdr, vc);
331 return EILSEQ;
332}
333
334static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
335{
336 void *p = io_u_verify_off(hdr, vc);
337 struct vhdr_sha256 *vh = hdr_priv(hdr);
338 uint8_t sha256[64];
339 struct sha256_ctx sha256_ctx = {
340 .buf = sha256,
341 };
342
343 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
344
345 sha256_init(&sha256_ctx);
346 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
347
348 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
349 return 0;
350
351 vc->name = "sha256";
352 vc->good_crc = vh->sha256;
353 vc->bad_crc = sha256_ctx.buf;
354 vc->crc_len = sizeof(vh->sha256);
355 log_verify_failure(hdr, vc);
356 return EILSEQ;
357}
358
359static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
360{
361 void *p = io_u_verify_off(hdr, vc);
362 struct vhdr_sha1 *vh = hdr_priv(hdr);
363 uint32_t sha1[5];
364 struct sha1_ctx sha1_ctx = {
365 .H = sha1,
366 };
367
368 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
369
370 sha1_init(&sha1_ctx);
371 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
372
373 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
374 return 0;
375
376 vc->name = "sha1";
377 vc->good_crc = vh->sha1;
378 vc->bad_crc = sha1_ctx.H;
379 vc->crc_len = sizeof(vh->sha1);
380 log_verify_failure(hdr, vc);
381 return EILSEQ;
382}
383
384static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
385{
386 void *p = io_u_verify_off(hdr, vc);
387 struct vhdr_crc7 *vh = hdr_priv(hdr);
388 unsigned char c;
389
390 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
391
392 c = crc7(p, hdr->len - hdr_size(hdr));
393
394 if (c == vh->crc7)
395 return 0;
396
397 vc->name = "crc7";
398 vc->good_crc = &vh->crc7;
399 vc->bad_crc = &c;
400 vc->crc_len = 1;
401 log_verify_failure(hdr, vc);
402 return EILSEQ;
403}
404
405static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
406{
407 void *p = io_u_verify_off(hdr, vc);
408 struct vhdr_crc16 *vh = hdr_priv(hdr);
409 unsigned short c;
410
411 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
412
413 c = crc16(p, hdr->len - hdr_size(hdr));
414
415 if (c == vh->crc16)
416 return 0;
417
418 vc->name = "crc16";
419 vc->good_crc = &vh->crc16;
420 vc->bad_crc = &c;
421 vc->crc_len = 2;
422 log_verify_failure(hdr, vc);
423 return EILSEQ;
424}
425
426static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
427{
428 void *p = io_u_verify_off(hdr, vc);
429 struct vhdr_crc64 *vh = hdr_priv(hdr);
430 unsigned long long c;
431
432 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
433
434 c = crc64(p, hdr->len - hdr_size(hdr));
435
436 if (c == vh->crc64)
437 return 0;
438
439 vc->name = "crc64";
440 vc->good_crc = &vh->crc64;
441 vc->bad_crc = &c;
442 vc->crc_len = 8;
443 log_verify_failure(hdr, vc);
444 return EILSEQ;
445}
446
447static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
448{
449 void *p = io_u_verify_off(hdr, vc);
450 struct vhdr_crc32 *vh = hdr_priv(hdr);
451 uint32_t c;
452
453 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
454
455 c = crc32(p, hdr->len - hdr_size(hdr));
456
457 if (c == vh->crc32)
458 return 0;
459
460 vc->name = "crc32";
461 vc->good_crc = &vh->crc32;
462 vc->bad_crc = &c;
463 vc->crc_len = 4;
464 log_verify_failure(hdr, vc);
465 return EILSEQ;
466}
467
468static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
469{
470 void *p = io_u_verify_off(hdr, vc);
471 struct vhdr_crc32 *vh = hdr_priv(hdr);
472 uint32_t c;
473
474 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
475
476 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
477 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
478 else
479 c = crc32c(p, hdr->len - hdr_size(hdr));
480
481 if (c == vh->crc32)
482 return 0;
483
484 vc->name = "crc32c";
485 vc->good_crc = &vh->crc32;
486 vc->bad_crc = &c;
487 vc->crc_len = 4;
488 log_verify_failure(hdr, vc);
489 return EILSEQ;
490}
491
492static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
493{
494 void *p = io_u_verify_off(hdr, vc);
495 struct vhdr_md5 *vh = hdr_priv(hdr);
496 uint32_t hash[MD5_HASH_WORDS];
497 struct md5_ctx md5_ctx = {
498 .hash = hash,
499 };
500
501 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
502
503 md5_init(&md5_ctx);
504 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
505
506 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
507 return 0;
508
509 vc->name = "md5";
510 vc->good_crc = vh->md5_digest;
511 vc->bad_crc = md5_ctx.hash;
512 vc->crc_len = sizeof(hash);
513 log_verify_failure(hdr, vc);
514 return EILSEQ;
515}
516
517static unsigned int hweight8(unsigned int w)
518{
519 unsigned int res = w - ((w >> 1) & 0x55);
520
521 res = (res & 0x33) + ((res >> 2) & 0x33);
522 return (res + (res >> 4)) & 0x0F;
523}
524
525int verify_io_u_pattern(char *pattern, unsigned long pattern_size,
526 char *buf, unsigned int len, unsigned int mod)
527{
528 unsigned int i;
529
530 for (i = 0; i < len; i++) {
531 if (buf[i] != pattern[mod]) {
532 unsigned int bits;
533
534 bits = hweight8(buf[i] ^ pattern[mod]);
535 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
536 buf[i], pattern[mod], bits);
537 log_err("fio: bad pattern block offset %u\n", i);
538 return EILSEQ;
539 }
540 mod++;
541 if (mod == pattern_size)
542 mod = 0;
543 }
544
545 return 0;
546}
547
548/*
549 * Push IO verification to a separate thread
550 */
551int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
552{
553 if (io_u->file)
554 put_file_log(td, io_u->file);
555
556 io_u->file = NULL;
557
558 pthread_mutex_lock(&td->io_u_lock);
559
560 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
561 td->cur_depth--;
562 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
563 }
564 flist_del(&io_u->list);
565 flist_add_tail(&io_u->list, &td->verify_list);
566 io_u->flags |= IO_U_F_FREE_DEF;
567 pthread_mutex_unlock(&td->io_u_lock);
568
569 pthread_cond_signal(&td->verify_cond);
570 return 0;
571}
572
573static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
574{
575 static char zero_buf[1024];
576 unsigned int this_len, len;
577 int ret = 0;
578 void *p;
579
580 if (!td->o.trim_zero)
581 return 0;
582
583 len = io_u->buflen;
584 p = io_u->buf;
585 do {
586 this_len = sizeof(zero_buf);
587 if (this_len > len)
588 this_len = len;
589 if (memcmp(p, zero_buf, this_len)) {
590 ret = EILSEQ;
591 break;
592 }
593 len -= this_len;
594 p += this_len;
595 } while (len);
596
597 if (!ret)
598 return 0;
599
600 log_err("trim: verify failed at file %s offset %llu, length %lu"
601 ", block offset %lu\n",
602 io_u->file->file_name, io_u->offset, io_u->buflen,
603 (unsigned long) (p - io_u->buf));
604 return ret;
605}
606
607int verify_io_u(struct thread_data *td, struct io_u *io_u)
608{
609 struct verify_header *hdr;
610 unsigned int hdr_size, hdr_inc, hdr_num = 0;
611 void *p;
612 int ret;
613
614 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
615 return 0;
616 if (io_u->flags & IO_U_F_TRIMMED) {
617 ret = verify_trimmed_io_u(td, io_u);
618 goto done;
619 }
620
621 hdr_inc = io_u->buflen;
622 if (td->o.verify_interval)
623 hdr_inc = td->o.verify_interval;
624
625 ret = 0;
626 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
627 p += hdr_inc, hdr_num++) {
628 struct vcont vc = {
629 .io_u = io_u,
630 .hdr_num = hdr_num,
631 .td = td,
632 };
633
634 if (ret && td->o.verify_fatal)
635 break;
636
637 hdr_size = __hdr_size(td->o.verify);
638 if (td->o.verify_offset)
639 memswp(p, p + td->o.verify_offset, hdr_size);
640 hdr = p;
641
642 if (hdr->fio_magic != FIO_HDR_MAGIC) {
643 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
644 hdr->fio_magic, FIO_HDR_MAGIC,
645 io_u->file->file_name,
646 io_u->offset + hdr_num * hdr->len, hdr->len);
647 return EILSEQ;
648 }
649
650 if (td->o.verify_pattern_bytes) {
651 dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
652 io_u, hdr->len);
653 ret = verify_io_u_pattern(td->o.verify_pattern,
654 td->o.verify_pattern_bytes,
655 p + hdr_size,
656 hdr_inc - hdr_size,
657 hdr_size % td->o.verify_pattern_bytes);
658
659 if (ret) {
660 log_err("pattern: verify failed at file %s offset %llu, length %u\n",
661 io_u->file->file_name,
662 io_u->offset + hdr_num * hdr->len,
663 hdr->len);
664 }
665
666 /*
667 * Also verify the meta data, if applicable
668 */
669 if (hdr->verify_type == VERIFY_META)
670 ret |= verify_io_u_meta(hdr, td, &vc);
671 continue;
672 }
673
674 switch (hdr->verify_type) {
675 case VERIFY_MD5:
676 ret = verify_io_u_md5(hdr, &vc);
677 break;
678 case VERIFY_CRC64:
679 ret = verify_io_u_crc64(hdr, &vc);
680 break;
681 case VERIFY_CRC32C:
682 case VERIFY_CRC32C_INTEL:
683 ret = verify_io_u_crc32c(hdr, &vc);
684 break;
685 case VERIFY_CRC32:
686 ret = verify_io_u_crc32(hdr, &vc);
687 break;
688 case VERIFY_CRC16:
689 ret = verify_io_u_crc16(hdr, &vc);
690 break;
691 case VERIFY_CRC7:
692 ret = verify_io_u_crc7(hdr, &vc);
693 break;
694 case VERIFY_SHA256:
695 ret = verify_io_u_sha256(hdr, &vc);
696 break;
697 case VERIFY_SHA512:
698 ret = verify_io_u_sha512(hdr, &vc);
699 break;
700 case VERIFY_META:
701 ret = verify_io_u_meta(hdr, td, &vc);
702 break;
703 case VERIFY_SHA1:
704 ret = verify_io_u_sha1(hdr, &vc);
705 break;
706 default:
707 log_err("Bad verify type %u\n", hdr->verify_type);
708 ret = EINVAL;
709 }
710 }
711
712done:
713 if (ret && td->o.verify_fatal)
714 td->terminate = 1;
715
716 return ret;
717}
718
719static void fill_meta(struct verify_header *hdr, struct thread_data *td,
720 struct io_u *io_u, unsigned int header_num)
721{
722 struct vhdr_meta *vh = hdr_priv(hdr);
723
724 vh->thread = td->thread_number;
725
726 vh->time_sec = io_u->start_time.tv_sec;
727 vh->time_usec = io_u->start_time.tv_usec;
728
729 vh->numberio = td->io_issues[DDIR_WRITE];
730
731 vh->offset = io_u->offset + header_num * td->o.verify_interval;
732}
733
734static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
735{
736 struct vhdr_sha512 *vh = hdr_priv(hdr);
737 struct sha512_ctx sha512_ctx = {
738 .buf = vh->sha512,
739 };
740
741 sha512_init(&sha512_ctx);
742 sha512_update(&sha512_ctx, p, len);
743}
744
745static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
746{
747 struct vhdr_sha256 *vh = hdr_priv(hdr);
748 struct sha256_ctx sha256_ctx = {
749 .buf = vh->sha256,
750 };
751
752 sha256_init(&sha256_ctx);
753 sha256_update(&sha256_ctx, p, len);
754}
755
756static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
757{
758 struct vhdr_sha1 *vh = hdr_priv(hdr);
759 struct sha1_ctx sha1_ctx = {
760 .H = vh->sha1,
761 };
762
763 sha1_init(&sha1_ctx);
764 sha1_update(&sha1_ctx, p, len);
765}
766
767static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
768{
769 struct vhdr_crc7 *vh = hdr_priv(hdr);
770
771 vh->crc7 = crc7(p, len);
772}
773
774static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
775{
776 struct vhdr_crc16 *vh = hdr_priv(hdr);
777
778 vh->crc16 = crc16(p, len);
779}
780
781static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
782{
783 struct vhdr_crc32 *vh = hdr_priv(hdr);
784
785 vh->crc32 = crc32(p, len);
786}
787
788static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
789{
790 struct vhdr_crc32 *vh = hdr_priv(hdr);
791
792 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
793 vh->crc32 = crc32c_intel(p, len);
794 else
795 vh->crc32 = crc32c(p, len);
796}
797
798static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
799{
800 struct vhdr_crc64 *vh = hdr_priv(hdr);
801
802 vh->crc64 = crc64(p, len);
803}
804
805static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
806{
807 struct vhdr_md5 *vh = hdr_priv(hdr);
808 struct md5_ctx md5_ctx = {
809 .hash = (uint32_t *) vh->md5_digest,
810 };
811
812 md5_init(&md5_ctx);
813 md5_update(&md5_ctx, p, len);
814}
815
816static void populate_hdr(struct thread_data *td, struct io_u *io_u,
817 struct verify_header *hdr, unsigned int header_num,
818 unsigned int header_len)
819{
820 unsigned int data_len;
821 void *data, *p;
822
823 p = (void *) hdr;
824
825 hdr->fio_magic = FIO_HDR_MAGIC;
826 hdr->len = header_len;
827 hdr->verify_type = td->o.verify;
828 hdr->rand_seed = io_u->rand_seed;
829 data_len = header_len - hdr_size(hdr);
830
831 data = p + hdr_size(hdr);
832 switch (td->o.verify) {
833 case VERIFY_MD5:
834 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
835 io_u, hdr->len);
836 fill_md5(hdr, data, data_len);
837 break;
838 case VERIFY_CRC64:
839 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
840 io_u, hdr->len);
841 fill_crc64(hdr, data, data_len);
842 break;
843 case VERIFY_CRC32C:
844 case VERIFY_CRC32C_INTEL:
845 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
846 io_u, hdr->len);
847 fill_crc32c(hdr, data, data_len);
848 break;
849 case VERIFY_CRC32:
850 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
851 io_u, hdr->len);
852 fill_crc32(hdr, data, data_len);
853 break;
854 case VERIFY_CRC16:
855 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
856 io_u, hdr->len);
857 fill_crc16(hdr, data, data_len);
858 break;
859 case VERIFY_CRC7:
860 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
861 io_u, hdr->len);
862 fill_crc7(hdr, data, data_len);
863 break;
864 case VERIFY_SHA256:
865 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
866 io_u, hdr->len);
867 fill_sha256(hdr, data, data_len);
868 break;
869 case VERIFY_SHA512:
870 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
871 io_u, hdr->len);
872 fill_sha512(hdr, data, data_len);
873 break;
874 case VERIFY_META:
875 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
876 io_u, hdr->len);
877 fill_meta(hdr, td, io_u, header_num);
878 break;
879 case VERIFY_SHA1:
880 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
881 io_u, hdr->len);
882 fill_sha1(hdr, data, data_len);
883 break;
884 default:
885 log_err("fio: bad verify type: %d\n", td->o.verify);
886 assert(0);
887 }
888 if (td->o.verify_offset)
889 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
890}
891
892/*
893 * fill body of io_u->buf with random data and add a header with the
894 * checksum of choice
895 */
896void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
897{
898 if (td->o.verify == VERIFY_NULL)
899 return;
900
901 fill_pattern_headers(td, io_u, 0, 0);
902}
903
904int get_next_verify(struct thread_data *td, struct io_u *io_u)
905{
906 struct io_piece *ipo = NULL;
907
908 /*
909 * this io_u is from a requeue, we already filled the offsets
910 */
911 if (io_u->file)
912 return 0;
913
914 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
915 struct rb_node *n = rb_first(&td->io_hist_tree);
916
917 ipo = rb_entry(n, struct io_piece, rb_node);
918 rb_erase(n, &td->io_hist_tree);
919 assert(ipo->flags & IP_F_ONRB);
920 ipo->flags &= ~IP_F_ONRB;
921 } else if (!flist_empty(&td->io_hist_list)) {
922 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
923 flist_del(&ipo->list);
924 assert(ipo->flags & IP_F_ONLIST);
925 ipo->flags &= ~IP_F_ONLIST;
926 }
927
928 if (ipo) {
929 td->io_hist_len--;
930
931 io_u->offset = ipo->offset;
932 io_u->buflen = ipo->len;
933 io_u->file = ipo->file;
934
935 if (ipo->flags & IP_F_TRIMMED)
936 io_u->flags |= IO_U_F_TRIMMED;
937
938 if (!fio_file_open(io_u->file)) {
939 int r = td_io_open_file(td, io_u->file);
940
941 if (r) {
942 dprint(FD_VERIFY, "failed file %s open\n",
943 io_u->file->file_name);
944 return 1;
945 }
946 }
947
948 get_file(ipo->file);
949 assert(fio_file_open(io_u->file));
950 io_u->ddir = DDIR_READ;
951 io_u->xfer_buf = io_u->buf;
952 io_u->xfer_buflen = io_u->buflen;
953
954 remove_trim_entry(td, ipo);
955 free(ipo);
956 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
957 return 0;
958 }
959
960 dprint(FD_VERIFY, "get_next_verify: empty\n");
961 return 1;
962}
963
964static void *verify_async_thread(void *data)
965{
966 struct thread_data *td = data;
967 struct io_u *io_u;
968 int ret = 0;
969
970 if (td->o.verify_cpumask_set &&
971 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
972 log_err("fio: failed setting verify thread affinity\n");
973 goto done;
974 }
975
976 do {
977 FLIST_HEAD(list);
978
979 read_barrier();
980 if (td->verify_thread_exit)
981 break;
982
983 pthread_mutex_lock(&td->io_u_lock);
984
985 while (flist_empty(&td->verify_list) &&
986 !td->verify_thread_exit) {
987 ret = pthread_cond_wait(&td->verify_cond,
988 &td->io_u_lock);
989 if (ret) {
990 pthread_mutex_unlock(&td->io_u_lock);
991 break;
992 }
993 }
994
995 flist_splice_init(&td->verify_list, &list);
996 pthread_mutex_unlock(&td->io_u_lock);
997
998 if (flist_empty(&list))
999 continue;
1000
1001 while (!flist_empty(&list)) {
1002 io_u = flist_entry(list.next, struct io_u, list);
1003 flist_del_init(&io_u->list);
1004
1005 ret = verify_io_u(td, io_u);
1006 put_io_u(td, io_u);
1007 if (!ret)
1008 continue;
1009 if (td->o.continue_on_error &&
1010 td_non_fatal_error(ret)) {
1011 update_error_count(td, ret);
1012 td_clear_error(td);
1013 ret = 0;
1014 }
1015 }
1016 } while (!ret);
1017
1018 if (ret) {
1019 td_verror(td, ret, "async_verify");
1020 if (td->o.verify_fatal)
1021 td->terminate = 1;
1022 }
1023
1024done:
1025 pthread_mutex_lock(&td->io_u_lock);
1026 td->nr_verify_threads--;
1027 pthread_mutex_unlock(&td->io_u_lock);
1028
1029 pthread_cond_signal(&td->free_cond);
1030 return NULL;
1031}
1032
1033int verify_async_init(struct thread_data *td)
1034{
1035 int i, ret;
1036 pthread_attr_t attr;
1037
1038 pthread_attr_init(&attr);
1039 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1040
1041 td->verify_thread_exit = 0;
1042
1043 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1044 for (i = 0; i < td->o.verify_async; i++) {
1045 ret = pthread_create(&td->verify_threads[i], &attr,
1046 verify_async_thread, td);
1047 if (ret) {
1048 log_err("fio: async verify creation failed: %s\n",
1049 strerror(ret));
1050 break;
1051 }
1052 ret = pthread_detach(td->verify_threads[i]);
1053 if (ret) {
1054 log_err("fio: async verify thread detach failed: %s\n",
1055 strerror(ret));
1056 break;
1057 }
1058 td->nr_verify_threads++;
1059 }
1060
1061 pthread_attr_destroy(&attr);
1062
1063 if (i != td->o.verify_async) {
1064 log_err("fio: only %d verify threads started, exiting\n", i);
1065 td->verify_thread_exit = 1;
1066 write_barrier();
1067 pthread_cond_broadcast(&td->verify_cond);
1068 return 1;
1069 }
1070
1071 return 0;
1072}
1073
1074void verify_async_exit(struct thread_data *td)
1075{
1076 td->verify_thread_exit = 1;
1077 write_barrier();
1078 pthread_cond_broadcast(&td->verify_cond);
1079
1080 pthread_mutex_lock(&td->io_u_lock);
1081
1082 while (td->nr_verify_threads)
1083 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1084
1085 pthread_mutex_unlock(&td->io_u_lock);
1086 free(td->verify_threads);
1087 td->verify_threads = NULL;
1088}
fio - Flexible IO Tester