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Fio 2.0.2
[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#include <libgen.h>
10
11#include "fio.h"
12#include "verify.h"
13#include "smalloc.h"
14#include "trim.h"
15#include "lib/rand.h"
16
17#include "crc/md5.h"
18#include "crc/crc64.h"
19#include "crc/crc32.h"
20#include "crc/crc32c.h"
21#include "crc/crc16.h"
22#include "crc/crc7.h"
23#include "crc/sha256.h"
24#include "crc/sha512.h"
25#include "crc/sha1.h"
26
27static void populate_hdr(struct thread_data *td, struct io_u *io_u,
28 struct verify_header *hdr, unsigned int header_num,
29 unsigned int header_len);
30
31void fill_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed)
32{
33 switch (td->o.verify_pattern_bytes) {
34 case 0:
35 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
36 if (use_seed)
37 __fill_random_buf(p, len, seed);
38 else
39 io_u->rand_seed = fill_random_buf(&td->buf_state, p, len);
40 break;
41 case 1:
42 if (io_u->buf_filled_len >= len) {
43 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
44 return;
45 }
46 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
47 memset(p, td->o.verify_pattern[0], len);
48 io_u->buf_filled_len = len;
49 break;
50 default: {
51 unsigned int i = 0, size = 0;
52 unsigned char *b = p;
53
54 if (io_u->buf_filled_len >= len) {
55 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
56 td->o.verify_pattern_bytes, len);
57 return;
58 }
59
60 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
61 td->o.verify_pattern_bytes, len);
62
63 while (i < len) {
64 size = td->o.verify_pattern_bytes;
65 if (size > (len - i))
66 size = len - i;
67 memcpy(b+i, td->o.verify_pattern, size);
68 i += size;
69 }
70 io_u->buf_filled_len = len;
71 break;
72 }
73 }
74}
75
76static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
77{
78 unsigned int hdr_inc;
79
80 hdr_inc = io_u->buflen;
81 if (td->o.verify_interval)
82 hdr_inc = td->o.verify_interval;
83
84 return hdr_inc;
85}
86
87static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
88 unsigned long seed, int use_seed)
89{
90 unsigned int hdr_inc, header_num;
91 struct verify_header *hdr;
92 void *p = io_u->buf;
93
94 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
95
96 hdr_inc = get_hdr_inc(td, io_u);
97 header_num = 0;
98 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
99 hdr = p;
100 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
101 header_num++;
102 }
103}
104
105static void memswp(void *buf1, void *buf2, unsigned int len)
106{
107 char swap[200];
108
109 assert(len <= sizeof(swap));
110
111 memcpy(&swap, buf1, len);
112 memcpy(buf1, buf2, len);
113 memcpy(buf2, &swap, len);
114}
115
116static void hexdump(void *buffer, int len)
117{
118 unsigned char *p = buffer;
119 int i;
120
121 for (i = 0; i < len; i++)
122 log_err("%02x", p[i]);
123 log_err("\n");
124}
125
126/*
127 * Prepare for seperation of verify_header and checksum header
128 */
129static inline unsigned int __hdr_size(int verify_type)
130{
131 unsigned int len = 0;
132
133 switch (verify_type) {
134 case VERIFY_NONE:
135 case VERIFY_NULL:
136 len = 0;
137 break;
138 case VERIFY_MD5:
139 len = sizeof(struct vhdr_md5);
140 break;
141 case VERIFY_CRC64:
142 len = sizeof(struct vhdr_crc64);
143 break;
144 case VERIFY_CRC32C:
145 case VERIFY_CRC32:
146 case VERIFY_CRC32C_INTEL:
147 len = sizeof(struct vhdr_crc32);
148 break;
149 case VERIFY_CRC16:
150 len = sizeof(struct vhdr_crc16);
151 break;
152 case VERIFY_CRC7:
153 len = sizeof(struct vhdr_crc7);
154 break;
155 case VERIFY_SHA256:
156 len = sizeof(struct vhdr_sha256);
157 break;
158 case VERIFY_SHA512:
159 len = sizeof(struct vhdr_sha512);
160 break;
161 case VERIFY_META:
162 len = sizeof(struct vhdr_meta);
163 break;
164 case VERIFY_SHA1:
165 len = sizeof(struct vhdr_sha1);
166 break;
167 case VERIFY_PATTERN:
168 len = 0;
169 break;
170 default:
171 log_err("fio: unknown verify header!\n");
172 assert(0);
173 }
174
175 return len + sizeof(struct verify_header);
176}
177
178static inline unsigned int hdr_size(struct verify_header *hdr)
179{
180 return __hdr_size(hdr->verify_type);
181}
182
183static void *hdr_priv(struct verify_header *hdr)
184{
185 void *priv = hdr;
186
187 return priv + sizeof(struct verify_header);
188}
189
190/*
191 * Verify container, pass info to verify handlers and allow them to
192 * pass info back in case of error
193 */
194struct vcont {
195 /*
196 * Input
197 */
198 struct io_u *io_u;
199 unsigned int hdr_num;
200 struct thread_data *td;
201
202 /*
203 * Output, only valid in case of error
204 */
205 const char *name;
206 void *good_crc;
207 void *bad_crc;
208 unsigned int crc_len;
209};
210
211static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
212 const char *type, struct fio_file *f)
213{
214 char *ptr, fname[256];
215 int ret, fd;
216
217 ptr = strdup(f->file_name);
218 strcpy(fname, basename(ptr));
219
220 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
221
222 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
223 if (fd < 0) {
224 perror("open verify buf file");
225 return;
226 }
227
228 while (len) {
229 ret = write(fd, buf, len);
230 if (!ret)
231 break;
232 else if (ret < 0) {
233 perror("write verify buf file");
234 break;
235 }
236 len -= ret;
237 buf += ret;
238 }
239
240 close(fd);
241 log_err(" %s data dumped as %s\n", type, fname);
242 free(ptr);
243}
244
245/*
246 * Dump the contents of the read block and re-generate the correct data
247 * and dump that too.
248 */
249static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
250{
251 struct thread_data *td = vc->td;
252 struct io_u *io_u = vc->io_u;
253 unsigned long hdr_offset;
254 struct io_u dummy;
255 void *buf;
256
257 if (!td->o.verify_dump)
258 return;
259
260 /*
261 * Dump the contents we just read off disk
262 */
263 hdr_offset = vc->hdr_num * hdr->len;
264
265 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
266 "received", vc->io_u->file);
267
268 /*
269 * Allocate a new buf and re-generate the original data
270 */
271 buf = malloc(io_u->buflen);
272 dummy = *io_u;
273 dummy.buf = buf;
274 dummy.rand_seed = hdr->rand_seed;
275 dummy.buf_filled_len = 0;
276
277 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
278
279 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
280 "expected", vc->io_u->file);
281 free(buf);
282}
283
284static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
285{
286 unsigned long long offset;
287
288 offset = vc->io_u->offset;
289 offset += vc->hdr_num * hdr->len;
290 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
291 vc->name, vc->io_u->file->file_name, offset, hdr->len);
292
293 if (vc->good_crc && vc->bad_crc) {
294 log_err(" Expected CRC: ");
295 hexdump(vc->good_crc, vc->crc_len);
296 log_err(" Received CRC: ");
297 hexdump(vc->bad_crc, vc->crc_len);
298 }
299
300 dump_verify_buffers(hdr, vc);
301}
302
303/*
304 * Return data area 'header_num'
305 */
306static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
307{
308 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
309}
310
311static unsigned int hweight8(unsigned int w)
312{
313 unsigned int res = w - ((w >> 1) & 0x55);
314
315 res = (res & 0x33) + ((res >> 2) & 0x33);
316 return (res + (res >> 4)) & 0x0F;
317}
318
319static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
320{
321 struct thread_data *td = vc->td;
322 struct io_u *io_u = vc->io_u;
323 char *buf, *pattern;
324 unsigned int header_size = __hdr_size(td->o.verify);
325 unsigned int len, mod, i;
326
327 pattern = td->o.verify_pattern;
328 buf = (void *) hdr + header_size;
329 len = get_hdr_inc(td, io_u) - header_size;
330 mod = header_size % td->o.verify_pattern_bytes;
331
332 for (i = 0; i < len; i++) {
333 if (buf[i] != pattern[mod]) {
334 unsigned int bits;
335
336 bits = hweight8(buf[i] ^ pattern[mod]);
337 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
338 buf[i], pattern[mod], bits);
339 log_err("fio: bad pattern block offset %u\n", i);
340 dump_verify_buffers(hdr, vc);
341 return EILSEQ;
342 }
343 mod++;
344 if (mod == td->o.verify_pattern_bytes)
345 mod = 0;
346 }
347
348 return 0;
349}
350
351static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
352{
353 struct thread_data *td = vc->td;
354 struct vhdr_meta *vh = hdr_priv(hdr);
355 struct io_u *io_u = vc->io_u;
356 int ret = EILSEQ;
357
358 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
359
360 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
361 ret = 0;
362
363 if (td->o.verify_pattern_bytes)
364 ret |= verify_io_u_pattern(hdr, vc);
365
366 if (!ret)
367 return 0;
368
369 vc->name = "meta";
370 log_verify_failure(hdr, vc);
371 return ret;
372}
373
374static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
375{
376 void *p = io_u_verify_off(hdr, vc);
377 struct vhdr_sha512 *vh = hdr_priv(hdr);
378 uint8_t sha512[128];
379 struct sha512_ctx sha512_ctx = {
380 .buf = sha512,
381 };
382
383 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
384
385 sha512_init(&sha512_ctx);
386 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
387
388 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
389 return 0;
390
391 vc->name = "sha512";
392 vc->good_crc = vh->sha512;
393 vc->bad_crc = sha512_ctx.buf;
394 vc->crc_len = sizeof(vh->sha512);
395 log_verify_failure(hdr, vc);
396 return EILSEQ;
397}
398
399static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
400{
401 void *p = io_u_verify_off(hdr, vc);
402 struct vhdr_sha256 *vh = hdr_priv(hdr);
403 uint8_t sha256[64];
404 struct sha256_ctx sha256_ctx = {
405 .buf = sha256,
406 };
407
408 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
409
410 sha256_init(&sha256_ctx);
411 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
412
413 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
414 return 0;
415
416 vc->name = "sha256";
417 vc->good_crc = vh->sha256;
418 vc->bad_crc = sha256_ctx.buf;
419 vc->crc_len = sizeof(vh->sha256);
420 log_verify_failure(hdr, vc);
421 return EILSEQ;
422}
423
424static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
425{
426 void *p = io_u_verify_off(hdr, vc);
427 struct vhdr_sha1 *vh = hdr_priv(hdr);
428 uint32_t sha1[5];
429 struct sha1_ctx sha1_ctx = {
430 .H = sha1,
431 };
432
433 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
434
435 sha1_init(&sha1_ctx);
436 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
437
438 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
439 return 0;
440
441 vc->name = "sha1";
442 vc->good_crc = vh->sha1;
443 vc->bad_crc = sha1_ctx.H;
444 vc->crc_len = sizeof(vh->sha1);
445 log_verify_failure(hdr, vc);
446 return EILSEQ;
447}
448
449static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
450{
451 void *p = io_u_verify_off(hdr, vc);
452 struct vhdr_crc7 *vh = hdr_priv(hdr);
453 unsigned char c;
454
455 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
456
457 c = crc7(p, hdr->len - hdr_size(hdr));
458
459 if (c == vh->crc7)
460 return 0;
461
462 vc->name = "crc7";
463 vc->good_crc = &vh->crc7;
464 vc->bad_crc = &c;
465 vc->crc_len = 1;
466 log_verify_failure(hdr, vc);
467 return EILSEQ;
468}
469
470static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
471{
472 void *p = io_u_verify_off(hdr, vc);
473 struct vhdr_crc16 *vh = hdr_priv(hdr);
474 unsigned short c;
475
476 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
477
478 c = crc16(p, hdr->len - hdr_size(hdr));
479
480 if (c == vh->crc16)
481 return 0;
482
483 vc->name = "crc16";
484 vc->good_crc = &vh->crc16;
485 vc->bad_crc = &c;
486 vc->crc_len = 2;
487 log_verify_failure(hdr, vc);
488 return EILSEQ;
489}
490
491static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
492{
493 void *p = io_u_verify_off(hdr, vc);
494 struct vhdr_crc64 *vh = hdr_priv(hdr);
495 unsigned long long c;
496
497 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
498
499 c = crc64(p, hdr->len - hdr_size(hdr));
500
501 if (c == vh->crc64)
502 return 0;
503
504 vc->name = "crc64";
505 vc->good_crc = &vh->crc64;
506 vc->bad_crc = &c;
507 vc->crc_len = 8;
508 log_verify_failure(hdr, vc);
509 return EILSEQ;
510}
511
512static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
513{
514 void *p = io_u_verify_off(hdr, vc);
515 struct vhdr_crc32 *vh = hdr_priv(hdr);
516 uint32_t c;
517
518 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
519
520 c = crc32(p, hdr->len - hdr_size(hdr));
521
522 if (c == vh->crc32)
523 return 0;
524
525 vc->name = "crc32";
526 vc->good_crc = &vh->crc32;
527 vc->bad_crc = &c;
528 vc->crc_len = 4;
529 log_verify_failure(hdr, vc);
530 return EILSEQ;
531}
532
533static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
534{
535 void *p = io_u_verify_off(hdr, vc);
536 struct vhdr_crc32 *vh = hdr_priv(hdr);
537 uint32_t c;
538
539 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
540
541 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
542 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
543 else
544 c = crc32c(p, hdr->len - hdr_size(hdr));
545
546 if (c == vh->crc32)
547 return 0;
548
549 vc->name = "crc32c";
550 vc->good_crc = &vh->crc32;
551 vc->bad_crc = &c;
552 vc->crc_len = 4;
553 log_verify_failure(hdr, vc);
554 return EILSEQ;
555}
556
557static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
558{
559 void *p = io_u_verify_off(hdr, vc);
560 struct vhdr_md5 *vh = hdr_priv(hdr);
561 uint32_t hash[MD5_HASH_WORDS];
562 struct md5_ctx md5_ctx = {
563 .hash = hash,
564 };
565
566 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
567
568 md5_init(&md5_ctx);
569 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
570
571 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
572 return 0;
573
574 vc->name = "md5";
575 vc->good_crc = vh->md5_digest;
576 vc->bad_crc = md5_ctx.hash;
577 vc->crc_len = sizeof(hash);
578 log_verify_failure(hdr, vc);
579 return EILSEQ;
580}
581
582/*
583 * Push IO verification to a separate thread
584 */
585int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
586{
587 if (io_u->file)
588 put_file_log(td, io_u->file);
589
590 pthread_mutex_lock(&td->io_u_lock);
591
592 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
593 td->cur_depth--;
594 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
595 }
596 flist_del(&io_u->list);
597 flist_add_tail(&io_u->list, &td->verify_list);
598 io_u->flags |= IO_U_F_FREE_DEF;
599 pthread_mutex_unlock(&td->io_u_lock);
600
601 pthread_cond_signal(&td->verify_cond);
602 return 0;
603}
604
605static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
606{
607 static char zero_buf[1024];
608 unsigned int this_len, len;
609 int ret = 0;
610 void *p;
611
612 if (!td->o.trim_zero)
613 return 0;
614
615 len = io_u->buflen;
616 p = io_u->buf;
617 do {
618 this_len = sizeof(zero_buf);
619 if (this_len > len)
620 this_len = len;
621 if (memcmp(p, zero_buf, this_len)) {
622 ret = EILSEQ;
623 break;
624 }
625 len -= this_len;
626 p += this_len;
627 } while (len);
628
629 if (!ret)
630 return 0;
631
632 log_err("trim: verify failed at file %s offset %llu, length %lu"
633 ", block offset %lu\n",
634 io_u->file->file_name, io_u->offset, io_u->buflen,
635 (unsigned long) (p - io_u->buf));
636 return ret;
637}
638
639int verify_io_u(struct thread_data *td, struct io_u *io_u)
640{
641 struct verify_header *hdr;
642 unsigned int header_size, hdr_inc, hdr_num = 0;
643 void *p;
644 int ret;
645
646 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
647 return 0;
648 if (io_u->flags & IO_U_F_TRIMMED) {
649 ret = verify_trimmed_io_u(td, io_u);
650 goto done;
651 }
652
653 hdr_inc = get_hdr_inc(td, io_u);
654
655 ret = 0;
656 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
657 p += hdr_inc, hdr_num++) {
658 struct vcont vc = {
659 .io_u = io_u,
660 .hdr_num = hdr_num,
661 .td = td,
662 };
663
664 if (ret && td->o.verify_fatal)
665 break;
666
667 header_size = __hdr_size(td->o.verify);
668 if (td->o.verify_offset)
669 memswp(p, p + td->o.verify_offset, header_size);
670 hdr = p;
671
672 if (hdr->fio_magic != FIO_HDR_MAGIC) {
673 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
674 hdr->fio_magic, FIO_HDR_MAGIC,
675 io_u->file->file_name,
676 io_u->offset + hdr_num * hdr->len, hdr->len);
677 return EILSEQ;
678 }
679
680 switch (hdr->verify_type) {
681 case VERIFY_MD5:
682 ret = verify_io_u_md5(hdr, &vc);
683 break;
684 case VERIFY_CRC64:
685 ret = verify_io_u_crc64(hdr, &vc);
686 break;
687 case VERIFY_CRC32C:
688 case VERIFY_CRC32C_INTEL:
689 ret = verify_io_u_crc32c(hdr, &vc);
690 break;
691 case VERIFY_CRC32:
692 ret = verify_io_u_crc32(hdr, &vc);
693 break;
694 case VERIFY_CRC16:
695 ret = verify_io_u_crc16(hdr, &vc);
696 break;
697 case VERIFY_CRC7:
698 ret = verify_io_u_crc7(hdr, &vc);
699 break;
700 case VERIFY_SHA256:
701 ret = verify_io_u_sha256(hdr, &vc);
702 break;
703 case VERIFY_SHA512:
704 ret = verify_io_u_sha512(hdr, &vc);
705 break;
706 case VERIFY_META:
707 ret = verify_io_u_meta(hdr, &vc);
708 break;
709 case VERIFY_SHA1:
710 ret = verify_io_u_sha1(hdr, &vc);
711 break;
712 case VERIFY_PATTERN:
713 ret = verify_io_u_pattern(hdr, &vc);
714 break;
715 default:
716 log_err("Bad verify type %u\n", hdr->verify_type);
717 ret = EINVAL;
718 }
719 }
720
721done:
722 if (ret && td->o.verify_fatal)
723 td->terminate = 1;
724
725 return ret;
726}
727
728static void fill_meta(struct verify_header *hdr, struct thread_data *td,
729 struct io_u *io_u, unsigned int header_num)
730{
731 struct vhdr_meta *vh = hdr_priv(hdr);
732
733 vh->thread = td->thread_number;
734
735 vh->time_sec = io_u->start_time.tv_sec;
736 vh->time_usec = io_u->start_time.tv_usec;
737
738 vh->numberio = td->io_issues[DDIR_WRITE];
739
740 vh->offset = io_u->offset + header_num * td->o.verify_interval;
741}
742
743static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
744{
745 struct vhdr_sha512 *vh = hdr_priv(hdr);
746 struct sha512_ctx sha512_ctx = {
747 .buf = vh->sha512,
748 };
749
750 sha512_init(&sha512_ctx);
751 sha512_update(&sha512_ctx, p, len);
752}
753
754static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
755{
756 struct vhdr_sha256 *vh = hdr_priv(hdr);
757 struct sha256_ctx sha256_ctx = {
758 .buf = vh->sha256,
759 };
760
761 sha256_init(&sha256_ctx);
762 sha256_update(&sha256_ctx, p, len);
763}
764
765static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
766{
767 struct vhdr_sha1 *vh = hdr_priv(hdr);
768 struct sha1_ctx sha1_ctx = {
769 .H = vh->sha1,
770 };
771
772 sha1_init(&sha1_ctx);
773 sha1_update(&sha1_ctx, p, len);
774}
775
776static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
777{
778 struct vhdr_crc7 *vh = hdr_priv(hdr);
779
780 vh->crc7 = crc7(p, len);
781}
782
783static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
784{
785 struct vhdr_crc16 *vh = hdr_priv(hdr);
786
787 vh->crc16 = crc16(p, len);
788}
789
790static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
791{
792 struct vhdr_crc32 *vh = hdr_priv(hdr);
793
794 vh->crc32 = crc32(p, len);
795}
796
797static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
798{
799 struct vhdr_crc32 *vh = hdr_priv(hdr);
800
801 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
802 vh->crc32 = crc32c_intel(p, len);
803 else
804 vh->crc32 = crc32c(p, len);
805}
806
807static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
808{
809 struct vhdr_crc64 *vh = hdr_priv(hdr);
810
811 vh->crc64 = crc64(p, len);
812}
813
814static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
815{
816 struct vhdr_md5 *vh = hdr_priv(hdr);
817 struct md5_ctx md5_ctx = {
818 .hash = (uint32_t *) vh->md5_digest,
819 };
820
821 md5_init(&md5_ctx);
822 md5_update(&md5_ctx, p, len);
823}
824
825static void populate_hdr(struct thread_data *td, struct io_u *io_u,
826 struct verify_header *hdr, unsigned int header_num,
827 unsigned int header_len)
828{
829 unsigned int data_len;
830 void *data, *p;
831
832 p = (void *) hdr;
833
834 hdr->fio_magic = FIO_HDR_MAGIC;
835 hdr->len = header_len;
836 hdr->verify_type = td->o.verify;
837 hdr->rand_seed = io_u->rand_seed;
838 data_len = header_len - hdr_size(hdr);
839
840 data = p + hdr_size(hdr);
841 switch (td->o.verify) {
842 case VERIFY_MD5:
843 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
844 io_u, hdr->len);
845 fill_md5(hdr, data, data_len);
846 break;
847 case VERIFY_CRC64:
848 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
849 io_u, hdr->len);
850 fill_crc64(hdr, data, data_len);
851 break;
852 case VERIFY_CRC32C:
853 case VERIFY_CRC32C_INTEL:
854 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
855 io_u, hdr->len);
856 fill_crc32c(hdr, data, data_len);
857 break;
858 case VERIFY_CRC32:
859 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
860 io_u, hdr->len);
861 fill_crc32(hdr, data, data_len);
862 break;
863 case VERIFY_CRC16:
864 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
865 io_u, hdr->len);
866 fill_crc16(hdr, data, data_len);
867 break;
868 case VERIFY_CRC7:
869 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
870 io_u, hdr->len);
871 fill_crc7(hdr, data, data_len);
872 break;
873 case VERIFY_SHA256:
874 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
875 io_u, hdr->len);
876 fill_sha256(hdr, data, data_len);
877 break;
878 case VERIFY_SHA512:
879 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
880 io_u, hdr->len);
881 fill_sha512(hdr, data, data_len);
882 break;
883 case VERIFY_META:
884 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
885 io_u, hdr->len);
886 fill_meta(hdr, td, io_u, header_num);
887 break;
888 case VERIFY_SHA1:
889 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
890 io_u, hdr->len);
891 fill_sha1(hdr, data, data_len);
892 break;
893 case VERIFY_PATTERN:
894 /* nothing to do here */
895 break;
896 default:
897 log_err("fio: bad verify type: %d\n", td->o.verify);
898 assert(0);
899 }
900 if (td->o.verify_offset)
901 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
902}
903
904/*
905 * fill body of io_u->buf with random data and add a header with the
906 * checksum of choice
907 */
908void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
909{
910 if (td->o.verify == VERIFY_NULL)
911 return;
912
913 fill_pattern_headers(td, io_u, 0, 0);
914}
915
916int get_next_verify(struct thread_data *td, struct io_u *io_u)
917{
918 struct io_piece *ipo = NULL;
919
920 /*
921 * this io_u is from a requeue, we already filled the offsets
922 */
923 if (io_u->file)
924 return 0;
925
926 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
927 struct rb_node *n = rb_first(&td->io_hist_tree);
928
929 ipo = rb_entry(n, struct io_piece, rb_node);
930 rb_erase(n, &td->io_hist_tree);
931 assert(ipo->flags & IP_F_ONRB);
932 ipo->flags &= ~IP_F_ONRB;
933 } else if (!flist_empty(&td->io_hist_list)) {
934 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
935 flist_del(&ipo->list);
936 assert(ipo->flags & IP_F_ONLIST);
937 ipo->flags &= ~IP_F_ONLIST;
938 }
939
940 if (ipo) {
941 td->io_hist_len--;
942
943 io_u->offset = ipo->offset;
944 io_u->buflen = ipo->len;
945 io_u->file = ipo->file;
946
947 if (ipo->flags & IP_F_TRIMMED)
948 io_u->flags |= IO_U_F_TRIMMED;
949
950 if (!fio_file_open(io_u->file)) {
951 int r = td_io_open_file(td, io_u->file);
952
953 if (r) {
954 dprint(FD_VERIFY, "failed file %s open\n",
955 io_u->file->file_name);
956 return 1;
957 }
958 }
959
960 get_file(ipo->file);
961 assert(fio_file_open(io_u->file));
962 io_u->ddir = DDIR_READ;
963 io_u->xfer_buf = io_u->buf;
964 io_u->xfer_buflen = io_u->buflen;
965
966 remove_trim_entry(td, ipo);
967 free(ipo);
968 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
969 return 0;
970 }
971
972 dprint(FD_VERIFY, "get_next_verify: empty\n");
973 return 1;
974}
975
976static void *verify_async_thread(void *data)
977{
978 struct thread_data *td = data;
979 struct io_u *io_u;
980 int ret = 0;
981
982 if (td->o.verify_cpumask_set &&
983 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
984 log_err("fio: failed setting verify thread affinity\n");
985 goto done;
986 }
987
988 do {
989 FLIST_HEAD(list);
990
991 read_barrier();
992 if (td->verify_thread_exit)
993 break;
994
995 pthread_mutex_lock(&td->io_u_lock);
996
997 while (flist_empty(&td->verify_list) &&
998 !td->verify_thread_exit) {
999 ret = pthread_cond_wait(&td->verify_cond,
1000 &td->io_u_lock);
1001 if (ret) {
1002 pthread_mutex_unlock(&td->io_u_lock);
1003 break;
1004 }
1005 }
1006
1007 flist_splice_init(&td->verify_list, &list);
1008 pthread_mutex_unlock(&td->io_u_lock);
1009
1010 if (flist_empty(&list))
1011 continue;
1012
1013 while (!flist_empty(&list)) {
1014 io_u = flist_entry(list.next, struct io_u, list);
1015 flist_del_init(&io_u->list);
1016
1017 ret = verify_io_u(td, io_u);
1018 put_io_u(td, io_u);
1019 if (!ret)
1020 continue;
1021 if (td->o.continue_on_error & ERROR_TYPE_VERIFY &&
1022 td_non_fatal_error(ret)) {
1023 update_error_count(td, ret);
1024 td_clear_error(td);
1025 ret = 0;
1026 }
1027 }
1028 } while (!ret);
1029
1030 if (ret) {
1031 td_verror(td, ret, "async_verify");
1032 if (td->o.verify_fatal)
1033 td->terminate = 1;
1034 }
1035
1036done:
1037 pthread_mutex_lock(&td->io_u_lock);
1038 td->nr_verify_threads--;
1039 pthread_mutex_unlock(&td->io_u_lock);
1040
1041 pthread_cond_signal(&td->free_cond);
1042 return NULL;
1043}
1044
1045int verify_async_init(struct thread_data *td)
1046{
1047 int i, ret;
1048 pthread_attr_t attr;
1049
1050 pthread_attr_init(&attr);
1051 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1052
1053 td->verify_thread_exit = 0;
1054
1055 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1056 for (i = 0; i < td->o.verify_async; i++) {
1057 ret = pthread_create(&td->verify_threads[i], &attr,
1058 verify_async_thread, td);
1059 if (ret) {
1060 log_err("fio: async verify creation failed: %s\n",
1061 strerror(ret));
1062 break;
1063 }
1064 ret = pthread_detach(td->verify_threads[i]);
1065 if (ret) {
1066 log_err("fio: async verify thread detach failed: %s\n",
1067 strerror(ret));
1068 break;
1069 }
1070 td->nr_verify_threads++;
1071 }
1072
1073 pthread_attr_destroy(&attr);
1074
1075 if (i != td->o.verify_async) {
1076 log_err("fio: only %d verify threads started, exiting\n", i);
1077 td->verify_thread_exit = 1;
1078 write_barrier();
1079 pthread_cond_broadcast(&td->verify_cond);
1080 return 1;
1081 }
1082
1083 return 0;
1084}
1085
1086void verify_async_exit(struct thread_data *td)
1087{
1088 td->verify_thread_exit = 1;
1089 write_barrier();
1090 pthread_cond_broadcast(&td->verify_cond);
1091
1092 pthread_mutex_lock(&td->io_u_lock);
1093
1094 while (td->nr_verify_threads)
1095 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1096
1097 pthread_mutex_unlock(&td->io_u_lock);
1098 free(td->verify_threads);
1099 td->verify_threads = NULL;
1100}
fio - Flexible IO Tester