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Make verify_dump off by default
[fio.git] / verify.c
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CommitLineData
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 /*
43 * See below write barrier comment
44 */
45#if 0
46 read_barrier();
47 if (io_u->buf_filled_len >= len) {
48 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
49 return;
50 }
51#endif
52 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
53 memset(p, td->o.verify_pattern[0], len);
54 /*
55 * We need to ensure that the pattern stores are seen before
56 * the fill length store, or we could observe headers that
57 * aren't valid to the extent notified by the fill length
58 */
59 write_barrier();
60 io_u->buf_filled_len = len;
61 break;
62 default: {
63 unsigned int i = 0, size = 0;
64 unsigned char *b = p;
65
66#if 0
67 read_barrier();
68 if (io_u->buf_filled_len >= len) {
69 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
70 td->o.verify_pattern_bytes, len);
71 return;
72 }
73#endif
74 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
75 td->o.verify_pattern_bytes, len);
76
77 while (i < len) {
78 size = td->o.verify_pattern_bytes;
79 if (size > (len - i))
80 size = len - i;
81 memcpy(b+i, td->o.verify_pattern, size);
82 i += size;
83 }
84 write_barrier();
85 io_u->buf_filled_len = len;
86 break;
87 }
88 }
89}
90
91static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
92{
93 unsigned int hdr_inc;
94
95 hdr_inc = io_u->buflen;
96 if (td->o.verify_interval)
97 hdr_inc = td->o.verify_interval;
98
99 return hdr_inc;
100}
101
102static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
103 unsigned long seed, int use_seed)
104{
105 unsigned int hdr_inc, header_num;
106 struct verify_header *hdr;
107 void *p = io_u->buf;
108
109 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
110
111 hdr_inc = get_hdr_inc(td, io_u);
112 header_num = 0;
113 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
114 hdr = p;
115 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
116 header_num++;
117 }
118}
119
120static void memswp(void *buf1, void *buf2, unsigned int len)
121{
122 char swap[200];
123
124 assert(len <= sizeof(swap));
125
126 memcpy(&swap, buf1, len);
127 memcpy(buf1, buf2, len);
128 memcpy(buf2, &swap, len);
129}
130
131static void hexdump(void *buffer, int len)
132{
133 unsigned char *p = buffer;
134 int i;
135
136 for (i = 0; i < len; i++)
137 log_err("%02x", p[i]);
138 log_err("\n");
139}
140
141/*
142 * Prepare for seperation of verify_header and checksum header
143 */
144static inline unsigned int __hdr_size(int verify_type)
145{
146 unsigned int len = 0;
147
148 switch (verify_type) {
149 case VERIFY_NONE:
150 case VERIFY_NULL:
151 len = 0;
152 break;
153 case VERIFY_MD5:
154 len = sizeof(struct vhdr_md5);
155 break;
156 case VERIFY_CRC64:
157 len = sizeof(struct vhdr_crc64);
158 break;
159 case VERIFY_CRC32C:
160 case VERIFY_CRC32:
161 case VERIFY_CRC32C_INTEL:
162 len = sizeof(struct vhdr_crc32);
163 break;
164 case VERIFY_CRC16:
165 len = sizeof(struct vhdr_crc16);
166 break;
167 case VERIFY_CRC7:
168 len = sizeof(struct vhdr_crc7);
169 break;
170 case VERIFY_SHA256:
171 len = sizeof(struct vhdr_sha256);
172 break;
173 case VERIFY_SHA512:
174 len = sizeof(struct vhdr_sha512);
175 break;
176 case VERIFY_META:
177 len = sizeof(struct vhdr_meta);
178 break;
179 case VERIFY_SHA1:
180 len = sizeof(struct vhdr_sha1);
181 break;
182 case VERIFY_PATTERN:
183 len = 0;
184 break;
185 default:
186 log_err("fio: unknown verify header!\n");
187 assert(0);
188 }
189
190 return len + sizeof(struct verify_header);
191}
192
193static inline unsigned int hdr_size(struct verify_header *hdr)
194{
195 return __hdr_size(hdr->verify_type);
196}
197
198static void *hdr_priv(struct verify_header *hdr)
199{
200 void *priv = hdr;
201
202 return priv + sizeof(struct verify_header);
203}
204
205/*
206 * Verify container, pass info to verify handlers and allow them to
207 * pass info back in case of error
208 */
209struct vcont {
210 /*
211 * Input
212 */
213 struct io_u *io_u;
214 unsigned int hdr_num;
215 struct thread_data *td;
216
217 /*
218 * Output, only valid in case of error
219 */
220 const char *name;
221 void *good_crc;
222 void *bad_crc;
223 unsigned int crc_len;
224};
225
226static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
227 const char *type, struct fio_file *f)
228{
229 char *ptr, fname[256];
230 int ret, fd;
231
232 ptr = strdup(f->file_name);
233 strcpy(fname, basename(ptr));
234
235 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
236
237 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
238 if (fd < 0) {
239 perror("open verify buf file");
240 return;
241 }
242
243 while (len) {
244 ret = write(fd, buf, len);
245 if (!ret)
246 break;
247 else if (ret < 0) {
248 perror("write verify buf file");
249 break;
250 }
251 len -= ret;
252 buf += ret;
253 }
254
255 close(fd);
256 log_err(" %s data dumped as %s\n", type, fname);
257 free(ptr);
258}
259
260/*
261 * Dump the contents of the read block and re-generate the correct data
262 * and dump that too.
263 */
264static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
265{
266 struct thread_data *td = vc->td;
267 struct io_u *io_u = vc->io_u;
268 unsigned long hdr_offset;
269 struct io_u dummy;
270 void *buf;
271
272 if (!td->o.verify_dump)
273 return;
274
275 /*
276 * Dump the contents we just read off disk
277 */
278 hdr_offset = vc->hdr_num * hdr->len;
279
280 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
281 "received", vc->io_u->file);
282
283 /*
284 * Allocate a new buf and re-generate the original data
285 */
286 buf = malloc(io_u->buflen);
287 dummy = *io_u;
288 dummy.buf = buf;
289 dummy.rand_seed = hdr->rand_seed;
290 dummy.buf_filled_len = 0;
291
292 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
293
294 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
295 "expected", vc->io_u->file);
296 free(buf);
297}
298
299static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
300{
301 unsigned long long offset;
302
303 offset = vc->io_u->offset;
304 offset += vc->hdr_num * hdr->len;
305 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
306 vc->name, vc->io_u->file->file_name, offset, hdr->len);
307
308 if (vc->good_crc && vc->bad_crc) {
309 log_err(" Expected CRC: ");
310 hexdump(vc->good_crc, vc->crc_len);
311 log_err(" Received CRC: ");
312 hexdump(vc->bad_crc, vc->crc_len);
313 }
314
315 dump_verify_buffers(hdr, vc);
316}
317
318/*
319 * Return data area 'header_num'
320 */
321static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
322{
323 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
324}
325
326static unsigned int hweight8(unsigned int w)
327{
328 unsigned int res = w - ((w >> 1) & 0x55);
329
330 res = (res & 0x33) + ((res >> 2) & 0x33);
331 return (res + (res >> 4)) & 0x0F;
332}
333
334static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
335{
336 struct thread_data *td = vc->td;
337 struct io_u *io_u = vc->io_u;
338 char *buf, *pattern;
339 unsigned int header_size = __hdr_size(td->o.verify);
340 unsigned int len, mod, i;
341
342 pattern = td->o.verify_pattern;
343 buf = (void *) hdr + header_size;
344 len = get_hdr_inc(td, io_u) - header_size;
345 mod = header_size % td->o.verify_pattern_bytes;
346
347 for (i = 0; i < len; i++) {
348 if (buf[i] != pattern[mod]) {
349 unsigned int bits;
350
351 bits = hweight8(buf[i] ^ pattern[mod]);
352 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
353 buf[i], pattern[mod], bits);
354 log_err("fio: bad pattern block offset %u\n", i);
355 dump_verify_buffers(hdr, vc);
356 return EILSEQ;
357 }
358 mod++;
359 if (mod == td->o.verify_pattern_bytes)
360 mod = 0;
361 }
362
363 return 0;
364}
365
366static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
367{
368 struct thread_data *td = vc->td;
369 struct vhdr_meta *vh = hdr_priv(hdr);
370 struct io_u *io_u = vc->io_u;
371 int ret = EILSEQ;
372
373 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
374
375 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
376 ret = 0;
377
378 if (td->o.verify_pattern_bytes)
379 ret |= verify_io_u_pattern(hdr, vc);
380
381 if (!ret)
382 return 0;
383
384 vc->name = "meta";
385 log_verify_failure(hdr, vc);
386 return ret;
387}
388
389static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
390{
391 void *p = io_u_verify_off(hdr, vc);
392 struct vhdr_sha512 *vh = hdr_priv(hdr);
393 uint8_t sha512[128];
394 struct sha512_ctx sha512_ctx = {
395 .buf = sha512,
396 };
397
398 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
399
400 sha512_init(&sha512_ctx);
401 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
402
403 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
404 return 0;
405
406 vc->name = "sha512";
407 vc->good_crc = vh->sha512;
408 vc->bad_crc = sha512_ctx.buf;
409 vc->crc_len = sizeof(vh->sha512);
410 log_verify_failure(hdr, vc);
411 return EILSEQ;
412}
413
414static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
415{
416 void *p = io_u_verify_off(hdr, vc);
417 struct vhdr_sha256 *vh = hdr_priv(hdr);
418 uint8_t sha256[64];
419 struct sha256_ctx sha256_ctx = {
420 .buf = sha256,
421 };
422
423 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
424
425 sha256_init(&sha256_ctx);
426 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
427
428 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
429 return 0;
430
431 vc->name = "sha256";
432 vc->good_crc = vh->sha256;
433 vc->bad_crc = sha256_ctx.buf;
434 vc->crc_len = sizeof(vh->sha256);
435 log_verify_failure(hdr, vc);
436 return EILSEQ;
437}
438
439static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
440{
441 void *p = io_u_verify_off(hdr, vc);
442 struct vhdr_sha1 *vh = hdr_priv(hdr);
443 uint32_t sha1[5];
444 struct sha1_ctx sha1_ctx = {
445 .H = sha1,
446 };
447
448 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
449
450 sha1_init(&sha1_ctx);
451 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
452
453 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
454 return 0;
455
456 vc->name = "sha1";
457 vc->good_crc = vh->sha1;
458 vc->bad_crc = sha1_ctx.H;
459 vc->crc_len = sizeof(vh->sha1);
460 log_verify_failure(hdr, vc);
461 return EILSEQ;
462}
463
464static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
465{
466 void *p = io_u_verify_off(hdr, vc);
467 struct vhdr_crc7 *vh = hdr_priv(hdr);
468 unsigned char c;
469
470 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
471
472 c = crc7(p, hdr->len - hdr_size(hdr));
473
474 if (c == vh->crc7)
475 return 0;
476
477 vc->name = "crc7";
478 vc->good_crc = &vh->crc7;
479 vc->bad_crc = &c;
480 vc->crc_len = 1;
481 log_verify_failure(hdr, vc);
482 return EILSEQ;
483}
484
485static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
486{
487 void *p = io_u_verify_off(hdr, vc);
488 struct vhdr_crc16 *vh = hdr_priv(hdr);
489 unsigned short c;
490
491 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
492
493 c = crc16(p, hdr->len - hdr_size(hdr));
494
495 if (c == vh->crc16)
496 return 0;
497
498 vc->name = "crc16";
499 vc->good_crc = &vh->crc16;
500 vc->bad_crc = &c;
501 vc->crc_len = 2;
502 log_verify_failure(hdr, vc);
503 return EILSEQ;
504}
505
506static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
507{
508 void *p = io_u_verify_off(hdr, vc);
509 struct vhdr_crc64 *vh = hdr_priv(hdr);
510 unsigned long long c;
511
512 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
513
514 c = crc64(p, hdr->len - hdr_size(hdr));
515
516 if (c == vh->crc64)
517 return 0;
518
519 vc->name = "crc64";
520 vc->good_crc = &vh->crc64;
521 vc->bad_crc = &c;
522 vc->crc_len = 8;
523 log_verify_failure(hdr, vc);
524 return EILSEQ;
525}
526
527static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
528{
529 void *p = io_u_verify_off(hdr, vc);
530 struct vhdr_crc32 *vh = hdr_priv(hdr);
531 uint32_t c;
532
533 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
534
535 c = crc32(p, hdr->len - hdr_size(hdr));
536
537 if (c == vh->crc32)
538 return 0;
539
540 vc->name = "crc32";
541 vc->good_crc = &vh->crc32;
542 vc->bad_crc = &c;
543 vc->crc_len = 4;
544 log_verify_failure(hdr, vc);
545 return EILSEQ;
546}
547
548static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
549{
550 void *p = io_u_verify_off(hdr, vc);
551 struct vhdr_crc32 *vh = hdr_priv(hdr);
552 uint32_t c;
553
554 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
555
556 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
557 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
558 else
559 c = crc32c(p, hdr->len - hdr_size(hdr));
560
561 if (c == vh->crc32)
562 return 0;
563
564 vc->name = "crc32c";
565 vc->good_crc = &vh->crc32;
566 vc->bad_crc = &c;
567 vc->crc_len = 4;
568 log_verify_failure(hdr, vc);
569 return EILSEQ;
570}
571
572static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
573{
574 void *p = io_u_verify_off(hdr, vc);
575 struct vhdr_md5 *vh = hdr_priv(hdr);
576 uint32_t hash[MD5_HASH_WORDS];
577 struct md5_ctx md5_ctx = {
578 .hash = hash,
579 };
580
581 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
582
583 md5_init(&md5_ctx);
584 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
585
586 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
587 return 0;
588
589 vc->name = "md5";
590 vc->good_crc = vh->md5_digest;
591 vc->bad_crc = md5_ctx.hash;
592 vc->crc_len = sizeof(hash);
593 log_verify_failure(hdr, vc);
594 return EILSEQ;
595}
596
597/*
598 * Push IO verification to a separate thread
599 */
600int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
601{
602 if (io_u->file)
603 put_file_log(td, io_u->file);
604
605 io_u->file = NULL;
606
607 pthread_mutex_lock(&td->io_u_lock);
608
609 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
610 td->cur_depth--;
611 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
612 }
613 flist_del(&io_u->list);
614 flist_add_tail(&io_u->list, &td->verify_list);
615 io_u->flags |= IO_U_F_FREE_DEF;
616 pthread_mutex_unlock(&td->io_u_lock);
617
618 pthread_cond_signal(&td->verify_cond);
619 return 0;
620}
621
622static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
623{
624 static char zero_buf[1024];
625 unsigned int this_len, len;
626 int ret = 0;
627 void *p;
628
629 if (!td->o.trim_zero)
630 return 0;
631
632 len = io_u->buflen;
633 p = io_u->buf;
634 do {
635 this_len = sizeof(zero_buf);
636 if (this_len > len)
637 this_len = len;
638 if (memcmp(p, zero_buf, this_len)) {
639 ret = EILSEQ;
640 break;
641 }
642 len -= this_len;
643 p += this_len;
644 } while (len);
645
646 if (!ret)
647 return 0;
648
649 log_err("trim: verify failed at file %s offset %llu, length %lu"
650 ", block offset %lu\n",
651 io_u->file->file_name, io_u->offset, io_u->buflen,
652 (unsigned long) (p - io_u->buf));
653 return ret;
654}
655
656int verify_io_u(struct thread_data *td, struct io_u *io_u)
657{
658 struct verify_header *hdr;
659 unsigned int header_size, hdr_inc, hdr_num = 0;
660 void *p;
661 int ret;
662
663 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
664 return 0;
665 if (io_u->flags & IO_U_F_TRIMMED) {
666 ret = verify_trimmed_io_u(td, io_u);
667 goto done;
668 }
669
670 hdr_inc = get_hdr_inc(td, io_u);
671
672 ret = 0;
673 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
674 p += hdr_inc, hdr_num++) {
675 struct vcont vc = {
676 .io_u = io_u,
677 .hdr_num = hdr_num,
678 .td = td,
679 };
680
681 if (ret && td->o.verify_fatal)
682 break;
683
684 header_size = __hdr_size(td->o.verify);
685 if (td->o.verify_offset)
686 memswp(p, p + td->o.verify_offset, header_size);
687 hdr = p;
688
689 if (hdr->fio_magic != FIO_HDR_MAGIC) {
690 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
691 hdr->fio_magic, FIO_HDR_MAGIC,
692 io_u->file->file_name,
693 io_u->offset + hdr_num * hdr->len, hdr->len);
694 return EILSEQ;
695 }
696
697 switch (hdr->verify_type) {
698 case VERIFY_MD5:
699 ret = verify_io_u_md5(hdr, &vc);
700 break;
701 case VERIFY_CRC64:
702 ret = verify_io_u_crc64(hdr, &vc);
703 break;
704 case VERIFY_CRC32C:
705 case VERIFY_CRC32C_INTEL:
706 ret = verify_io_u_crc32c(hdr, &vc);
707 break;
708 case VERIFY_CRC32:
709 ret = verify_io_u_crc32(hdr, &vc);
710 break;
711 case VERIFY_CRC16:
712 ret = verify_io_u_crc16(hdr, &vc);
713 break;
714 case VERIFY_CRC7:
715 ret = verify_io_u_crc7(hdr, &vc);
716 break;
717 case VERIFY_SHA256:
718 ret = verify_io_u_sha256(hdr, &vc);
719 break;
720 case VERIFY_SHA512:
721 ret = verify_io_u_sha512(hdr, &vc);
722 break;
723 case VERIFY_META:
724 ret = verify_io_u_meta(hdr, &vc);
725 break;
726 case VERIFY_SHA1:
727 ret = verify_io_u_sha1(hdr, &vc);
728 break;
729 case VERIFY_PATTERN:
730 ret = verify_io_u_pattern(hdr, &vc);
731 break;
732 default:
733 log_err("Bad verify type %u\n", hdr->verify_type);
734 ret = EINVAL;
735 }
736 }
737
738done:
739 if (ret && td->o.verify_fatal)
740 td->terminate = 1;
741
742 return ret;
743}
744
745static void fill_meta(struct verify_header *hdr, struct thread_data *td,
746 struct io_u *io_u, unsigned int header_num)
747{
748 struct vhdr_meta *vh = hdr_priv(hdr);
749
750 vh->thread = td->thread_number;
751
752 vh->time_sec = io_u->start_time.tv_sec;
753 vh->time_usec = io_u->start_time.tv_usec;
754
755 vh->numberio = td->io_issues[DDIR_WRITE];
756
757 vh->offset = io_u->offset + header_num * td->o.verify_interval;
758}
759
760static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
761{
762 struct vhdr_sha512 *vh = hdr_priv(hdr);
763 struct sha512_ctx sha512_ctx = {
764 .buf = vh->sha512,
765 };
766
767 sha512_init(&sha512_ctx);
768 sha512_update(&sha512_ctx, p, len);
769}
770
771static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
772{
773 struct vhdr_sha256 *vh = hdr_priv(hdr);
774 struct sha256_ctx sha256_ctx = {
775 .buf = vh->sha256,
776 };
777
778 sha256_init(&sha256_ctx);
779 sha256_update(&sha256_ctx, p, len);
780}
781
782static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
783{
784 struct vhdr_sha1 *vh = hdr_priv(hdr);
785 struct sha1_ctx sha1_ctx = {
786 .H = vh->sha1,
787 };
788
789 sha1_init(&sha1_ctx);
790 sha1_update(&sha1_ctx, p, len);
791}
792
793static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
794{
795 struct vhdr_crc7 *vh = hdr_priv(hdr);
796
797 vh->crc7 = crc7(p, len);
798}
799
800static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
801{
802 struct vhdr_crc16 *vh = hdr_priv(hdr);
803
804 vh->crc16 = crc16(p, len);
805}
806
807static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
808{
809 struct vhdr_crc32 *vh = hdr_priv(hdr);
810
811 vh->crc32 = crc32(p, len);
812}
813
814static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
815{
816 struct vhdr_crc32 *vh = hdr_priv(hdr);
817
818 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
819 vh->crc32 = crc32c_intel(p, len);
820 else
821 vh->crc32 = crc32c(p, len);
822}
823
824static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
825{
826 struct vhdr_crc64 *vh = hdr_priv(hdr);
827
828 vh->crc64 = crc64(p, len);
829}
830
831static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
832{
833 struct vhdr_md5 *vh = hdr_priv(hdr);
834 struct md5_ctx md5_ctx = {
835 .hash = (uint32_t *) vh->md5_digest,
836 };
837
838 md5_init(&md5_ctx);
839 md5_update(&md5_ctx, p, len);
840}
841
842static void populate_hdr(struct thread_data *td, struct io_u *io_u,
843 struct verify_header *hdr, unsigned int header_num,
844 unsigned int header_len)
845{
846 unsigned int data_len;
847 void *data, *p;
848
849 p = (void *) hdr;
850
851 hdr->fio_magic = FIO_HDR_MAGIC;
852 hdr->len = header_len;
853 hdr->verify_type = td->o.verify;
854 hdr->rand_seed = io_u->rand_seed;
855 data_len = header_len - hdr_size(hdr);
856
857 data = p + hdr_size(hdr);
858 switch (td->o.verify) {
859 case VERIFY_MD5:
860 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
861 io_u, hdr->len);
862 fill_md5(hdr, data, data_len);
863 break;
864 case VERIFY_CRC64:
865 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
866 io_u, hdr->len);
867 fill_crc64(hdr, data, data_len);
868 break;
869 case VERIFY_CRC32C:
870 case VERIFY_CRC32C_INTEL:
871 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
872 io_u, hdr->len);
873 fill_crc32c(hdr, data, data_len);
874 break;
875 case VERIFY_CRC32:
876 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
877 io_u, hdr->len);
878 fill_crc32(hdr, data, data_len);
879 break;
880 case VERIFY_CRC16:
881 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
882 io_u, hdr->len);
883 fill_crc16(hdr, data, data_len);
884 break;
885 case VERIFY_CRC7:
886 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
887 io_u, hdr->len);
888 fill_crc7(hdr, data, data_len);
889 break;
890 case VERIFY_SHA256:
891 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
892 io_u, hdr->len);
893 fill_sha256(hdr, data, data_len);
894 break;
895 case VERIFY_SHA512:
896 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
897 io_u, hdr->len);
898 fill_sha512(hdr, data, data_len);
899 break;
900 case VERIFY_META:
901 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
902 io_u, hdr->len);
903 fill_meta(hdr, td, io_u, header_num);
904 break;
905 case VERIFY_SHA1:
906 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
907 io_u, hdr->len);
908 fill_sha1(hdr, data, data_len);
909 break;
910 case VERIFY_PATTERN:
911 /* nothing to do here */
912 break;
913 default:
914 log_err("fio: bad verify type: %d\n", td->o.verify);
915 assert(0);
916 }
917 if (td->o.verify_offset)
918 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
919}
920
921/*
922 * fill body of io_u->buf with random data and add a header with the
923 * checksum of choice
924 */
925void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
926{
927 if (td->o.verify == VERIFY_NULL)
928 return;
929
930 fill_pattern_headers(td, io_u, 0, 0);
931}
932
933int get_next_verify(struct thread_data *td, struct io_u *io_u)
934{
935 struct io_piece *ipo = NULL;
936
937 /*
938 * this io_u is from a requeue, we already filled the offsets
939 */
940 if (io_u->file)
941 return 0;
942
943 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
944 struct rb_node *n = rb_first(&td->io_hist_tree);
945
946 ipo = rb_entry(n, struct io_piece, rb_node);
947 rb_erase(n, &td->io_hist_tree);
948 assert(ipo->flags & IP_F_ONRB);
949 ipo->flags &= ~IP_F_ONRB;
950 } else if (!flist_empty(&td->io_hist_list)) {
951 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
952 flist_del(&ipo->list);
953 assert(ipo->flags & IP_F_ONLIST);
954 ipo->flags &= ~IP_F_ONLIST;
955 }
956
957 if (ipo) {
958 td->io_hist_len--;
959
960 io_u->offset = ipo->offset;
961 io_u->buflen = ipo->len;
962 io_u->file = ipo->file;
963
964 if (ipo->flags & IP_F_TRIMMED)
965 io_u->flags |= IO_U_F_TRIMMED;
966
967 if (!fio_file_open(io_u->file)) {
968 int r = td_io_open_file(td, io_u->file);
969
970 if (r) {
971 dprint(FD_VERIFY, "failed file %s open\n",
972 io_u->file->file_name);
973 return 1;
974 }
975 }
976
977 get_file(ipo->file);
978 assert(fio_file_open(io_u->file));
979 io_u->ddir = DDIR_READ;
980 io_u->xfer_buf = io_u->buf;
981 io_u->xfer_buflen = io_u->buflen;
982
983 remove_trim_entry(td, ipo);
984 free(ipo);
985 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
986 return 0;
987 }
988
989 dprint(FD_VERIFY, "get_next_verify: empty\n");
990 return 1;
991}
992
993static void *verify_async_thread(void *data)
994{
995 struct thread_data *td = data;
996 struct io_u *io_u;
997 int ret = 0;
998
999 if (td->o.verify_cpumask_set &&
1000 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1001 log_err("fio: failed setting verify thread affinity\n");
1002 goto done;
1003 }
1004
1005 do {
1006 FLIST_HEAD(list);
1007
1008 read_barrier();
1009 if (td->verify_thread_exit)
1010 break;
1011
1012 pthread_mutex_lock(&td->io_u_lock);
1013
1014 while (flist_empty(&td->verify_list) &&
1015 !td->verify_thread_exit) {
1016 ret = pthread_cond_wait(&td->verify_cond,
1017 &td->io_u_lock);
1018 if (ret) {
1019 pthread_mutex_unlock(&td->io_u_lock);
1020 break;
1021 }
1022 }
1023
1024 flist_splice_init(&td->verify_list, &list);
1025 pthread_mutex_unlock(&td->io_u_lock);
1026
1027 if (flist_empty(&list))
1028 continue;
1029
1030 while (!flist_empty(&list)) {
1031 io_u = flist_entry(list.next, struct io_u, list);
1032 flist_del_init(&io_u->list);
1033
1034 ret = verify_io_u(td, io_u);
1035 put_io_u(td, io_u);
1036 if (!ret)
1037 continue;
1038 if (td->o.continue_on_error &&
1039 td_non_fatal_error(ret)) {
1040 update_error_count(td, ret);
1041 td_clear_error(td);
1042 ret = 0;
1043 }
1044 }
1045 } while (!ret);
1046
1047 if (ret) {
1048 td_verror(td, ret, "async_verify");
1049 if (td->o.verify_fatal)
1050 td->terminate = 1;
1051 }
1052
1053done:
1054 pthread_mutex_lock(&td->io_u_lock);
1055 td->nr_verify_threads--;
1056 pthread_mutex_unlock(&td->io_u_lock);
1057
1058 pthread_cond_signal(&td->free_cond);
1059 return NULL;
1060}
1061
1062int verify_async_init(struct thread_data *td)
1063{
1064 int i, ret;
1065 pthread_attr_t attr;
1066
1067 pthread_attr_init(&attr);
1068 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1069
1070 td->verify_thread_exit = 0;
1071
1072 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1073 for (i = 0; i < td->o.verify_async; i++) {
1074 ret = pthread_create(&td->verify_threads[i], &attr,
1075 verify_async_thread, td);
1076 if (ret) {
1077 log_err("fio: async verify creation failed: %s\n",
1078 strerror(ret));
1079 break;
1080 }
1081 ret = pthread_detach(td->verify_threads[i]);
1082 if (ret) {
1083 log_err("fio: async verify thread detach failed: %s\n",
1084 strerror(ret));
1085 break;
1086 }
1087 td->nr_verify_threads++;
1088 }
1089
1090 pthread_attr_destroy(&attr);
1091
1092 if (i != td->o.verify_async) {
1093 log_err("fio: only %d verify threads started, exiting\n", i);
1094 td->verify_thread_exit = 1;
1095 write_barrier();
1096 pthread_cond_broadcast(&td->verify_cond);
1097 return 1;
1098 }
1099
1100 return 0;
1101}
1102
1103void verify_async_exit(struct thread_data *td)
1104{
1105 td->verify_thread_exit = 1;
1106 write_barrier();
1107 pthread_cond_broadcast(&td->verify_cond);
1108
1109 pthread_mutex_lock(&td->io_u_lock);
1110
1111 while (td->nr_verify_threads)
1112 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1113
1114 pthread_mutex_unlock(&td->io_u_lock);
1115 free(td->verify_threads);
1116 td->verify_threads = NULL;
1117}
fio - Flexible IO Tester