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Fix _SC_NPROCESSORS_ONLN on Windows
[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#include "lib/hweight.h"
17
18#include "crc/md5.h"
19#include "crc/crc64.h"
20#include "crc/crc32.h"
21#include "crc/crc32c.h"
22#include "crc/crc16.h"
23#include "crc/crc7.h"
24#include "crc/sha256.h"
25#include "crc/sha512.h"
26#include "crc/sha1.h"
27
28static void populate_hdr(struct thread_data *td, struct io_u *io_u,
29 struct verify_header *hdr, unsigned int header_num,
30 unsigned int header_len);
31
32void fill_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed)
33{
34 switch (td->o.verify_pattern_bytes) {
35 case 0:
36 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
37 if (use_seed)
38 __fill_random_buf(p, len, seed);
39 else
40 io_u->rand_seed = fill_random_buf(&td->buf_state, p, len);
41 break;
42 case 1:
43 if (io_u->buf_filled_len >= len) {
44 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
45 return;
46 }
47 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
48 memset(p, td->o.verify_pattern[0], len);
49 io_u->buf_filled_len = len;
50 break;
51 default: {
52 unsigned int i = 0, size = 0;
53 unsigned char *b = p;
54
55 if (io_u->buf_filled_len >= len) {
56 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
57 td->o.verify_pattern_bytes, len);
58 return;
59 }
60
61 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
62 td->o.verify_pattern_bytes, len);
63
64 while (i < len) {
65 size = td->o.verify_pattern_bytes;
66 if (size > (len - i))
67 size = len - i;
68 memcpy(b+i, td->o.verify_pattern, size);
69 i += size;
70 }
71 io_u->buf_filled_len = len;
72 break;
73 }
74 }
75}
76
77static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
78{
79 unsigned int hdr_inc;
80
81 hdr_inc = io_u->buflen;
82 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
83 hdr_inc = td->o.verify_interval;
84
85 return hdr_inc;
86}
87
88static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
89 unsigned long seed, int use_seed)
90{
91 unsigned int hdr_inc, header_num;
92 struct verify_header *hdr;
93 void *p = io_u->buf;
94
95 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
96
97 hdr_inc = get_hdr_inc(td, io_u);
98 header_num = 0;
99 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
100 hdr = p;
101 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
102 header_num++;
103 }
104}
105
106static void memswp(void *buf1, void *buf2, unsigned int len)
107{
108 char swap[200];
109
110 assert(len <= sizeof(swap));
111
112 memcpy(&swap, buf1, len);
113 memcpy(buf1, buf2, len);
114 memcpy(buf2, &swap, len);
115}
116
117static void hexdump(void *buffer, int len)
118{
119 unsigned char *p = buffer;
120 int i;
121
122 for (i = 0; i < len; i++)
123 log_err("%02x", p[i]);
124 log_err("\n");
125}
126
127/*
128 * Prepare for seperation of verify_header and checksum header
129 */
130static inline unsigned int __hdr_size(int verify_type)
131{
132 unsigned int len = 0;
133
134 switch (verify_type) {
135 case VERIFY_NONE:
136 case VERIFY_NULL:
137 len = 0;
138 break;
139 case VERIFY_MD5:
140 len = sizeof(struct vhdr_md5);
141 break;
142 case VERIFY_CRC64:
143 len = sizeof(struct vhdr_crc64);
144 break;
145 case VERIFY_CRC32C:
146 case VERIFY_CRC32:
147 case VERIFY_CRC32C_INTEL:
148 len = sizeof(struct vhdr_crc32);
149 break;
150 case VERIFY_CRC16:
151 len = sizeof(struct vhdr_crc16);
152 break;
153 case VERIFY_CRC7:
154 len = sizeof(struct vhdr_crc7);
155 break;
156 case VERIFY_SHA256:
157 len = sizeof(struct vhdr_sha256);
158 break;
159 case VERIFY_SHA512:
160 len = sizeof(struct vhdr_sha512);
161 break;
162 case VERIFY_META:
163 len = sizeof(struct vhdr_meta);
164 break;
165 case VERIFY_SHA1:
166 len = sizeof(struct vhdr_sha1);
167 break;
168 case VERIFY_PATTERN:
169 len = 0;
170 break;
171 default:
172 log_err("fio: unknown verify header!\n");
173 assert(0);
174 }
175
176 return len + sizeof(struct verify_header);
177}
178
179static inline unsigned int hdr_size(struct verify_header *hdr)
180{
181 return __hdr_size(hdr->verify_type);
182}
183
184static void *hdr_priv(struct verify_header *hdr)
185{
186 void *priv = hdr;
187
188 return priv + sizeof(struct verify_header);
189}
190
191/*
192 * Verify container, pass info to verify handlers and allow them to
193 * pass info back in case of error
194 */
195struct vcont {
196 /*
197 * Input
198 */
199 struct io_u *io_u;
200 unsigned int hdr_num;
201 struct thread_data *td;
202
203 /*
204 * Output, only valid in case of error
205 */
206 const char *name;
207 void *good_crc;
208 void *bad_crc;
209 unsigned int crc_len;
210};
211
212static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
213 const char *type, struct fio_file *f)
214{
215 char *ptr, fname[256];
216 int ret, fd;
217
218 ptr = strdup(f->file_name);
219 strcpy(fname, basename(ptr));
220
221 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
222
223 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
224 if (fd < 0) {
225 perror("open verify buf file");
226 return;
227 }
228
229 while (len) {
230 ret = write(fd, buf, len);
231 if (!ret)
232 break;
233 else if (ret < 0) {
234 perror("write verify buf file");
235 break;
236 }
237 len -= ret;
238 buf += ret;
239 }
240
241 close(fd);
242 log_err(" %s data dumped as %s\n", type, fname);
243 free(ptr);
244}
245
246/*
247 * Dump the contents of the read block and re-generate the correct data
248 * and dump that too.
249 */
250static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
251{
252 struct thread_data *td = vc->td;
253 struct io_u *io_u = vc->io_u;
254 unsigned long hdr_offset;
255 struct io_u dummy;
256 void *buf;
257
258 if (!td->o.verify_dump)
259 return;
260
261 /*
262 * Dump the contents we just read off disk
263 */
264 hdr_offset = vc->hdr_num * hdr->len;
265
266 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
267 "received", vc->io_u->file);
268
269 /*
270 * Allocate a new buf and re-generate the original data
271 */
272 buf = malloc(io_u->buflen);
273 dummy = *io_u;
274 dummy.buf = buf;
275 dummy.rand_seed = hdr->rand_seed;
276 dummy.buf_filled_len = 0;
277
278 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
279
280 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
281 "expected", vc->io_u->file);
282 free(buf);
283}
284
285static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
286{
287 unsigned long long offset;
288
289 offset = vc->io_u->offset;
290 offset += vc->hdr_num * hdr->len;
291 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
292 vc->name, vc->io_u->file->file_name, offset, hdr->len);
293
294 if (vc->good_crc && vc->bad_crc) {
295 log_err(" Expected CRC: ");
296 hexdump(vc->good_crc, vc->crc_len);
297 log_err(" Received CRC: ");
298 hexdump(vc->bad_crc, vc->crc_len);
299 }
300
301 dump_verify_buffers(hdr, vc);
302}
303
304/*
305 * Return data area 'header_num'
306 */
307static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
308{
309 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
310}
311
312static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
313{
314 struct thread_data *td = vc->td;
315 struct io_u *io_u = vc->io_u;
316 char *buf, *pattern;
317 unsigned int header_size = __hdr_size(td->o.verify);
318 unsigned int len, mod, i, size, pattern_size;
319
320 pattern = td->o.verify_pattern;
321 pattern_size = td->o.verify_pattern_bytes;
322 if (pattern_size <= 1)
323 pattern_size = MAX_PATTERN_SIZE;
324 buf = (void *) hdr + header_size;
325 len = get_hdr_inc(td, io_u) - header_size;
326 mod = header_size % pattern_size;
327
328 for (i = 0; i < len; i += size) {
329 size = pattern_size - mod;
330 if (size > (len - i))
331 size = len - i;
332 if (memcmp(buf + i, pattern + mod, size))
333 /* Let the slow compare find the first mismatch byte. */
334 break;
335 mod = 0;
336 }
337
338 for (; i < len; i++) {
339 if (buf[i] != pattern[mod]) {
340 unsigned int bits;
341
342 bits = hweight8(buf[i] ^ pattern[mod]);
343 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
344 buf[i], pattern[mod], bits);
345 log_err("fio: bad pattern block offset %u\n", i);
346 dump_verify_buffers(hdr, vc);
347 return EILSEQ;
348 }
349 mod++;
350 if (mod == td->o.verify_pattern_bytes)
351 mod = 0;
352 }
353
354 return 0;
355}
356
357static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
358{
359 struct thread_data *td = vc->td;
360 struct vhdr_meta *vh = hdr_priv(hdr);
361 struct io_u *io_u = vc->io_u;
362 int ret = EILSEQ;
363
364 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
365
366 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
367 ret = 0;
368
369 if (td->o.verify_pattern_bytes)
370 ret |= verify_io_u_pattern(hdr, vc);
371
372 if (!ret)
373 return 0;
374
375 vc->name = "meta";
376 log_verify_failure(hdr, vc);
377 return ret;
378}
379
380static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
381{
382 void *p = io_u_verify_off(hdr, vc);
383 struct vhdr_sha512 *vh = hdr_priv(hdr);
384 uint8_t sha512[128];
385 struct fio_sha512_ctx sha512_ctx = {
386 .buf = sha512,
387 };
388
389 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
390
391 fio_sha512_init(&sha512_ctx);
392 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
393
394 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
395 return 0;
396
397 vc->name = "sha512";
398 vc->good_crc = vh->sha512;
399 vc->bad_crc = sha512_ctx.buf;
400 vc->crc_len = sizeof(vh->sha512);
401 log_verify_failure(hdr, vc);
402 return EILSEQ;
403}
404
405static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
406{
407 void *p = io_u_verify_off(hdr, vc);
408 struct vhdr_sha256 *vh = hdr_priv(hdr);
409 uint8_t sha256[64];
410 struct fio_sha256_ctx sha256_ctx = {
411 .buf = sha256,
412 };
413
414 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
415
416 fio_sha256_init(&sha256_ctx);
417 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
418
419 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
420 return 0;
421
422 vc->name = "sha256";
423 vc->good_crc = vh->sha256;
424 vc->bad_crc = sha256_ctx.buf;
425 vc->crc_len = sizeof(vh->sha256);
426 log_verify_failure(hdr, vc);
427 return EILSEQ;
428}
429
430static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
431{
432 void *p = io_u_verify_off(hdr, vc);
433 struct vhdr_sha1 *vh = hdr_priv(hdr);
434 uint32_t sha1[5];
435 struct fio_sha1_ctx sha1_ctx = {
436 .H = sha1,
437 };
438
439 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
440
441 fio_sha1_init(&sha1_ctx);
442 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
443
444 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
445 return 0;
446
447 vc->name = "sha1";
448 vc->good_crc = vh->sha1;
449 vc->bad_crc = sha1_ctx.H;
450 vc->crc_len = sizeof(vh->sha1);
451 log_verify_failure(hdr, vc);
452 return EILSEQ;
453}
454
455static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
456{
457 void *p = io_u_verify_off(hdr, vc);
458 struct vhdr_crc7 *vh = hdr_priv(hdr);
459 unsigned char c;
460
461 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
462
463 c = fio_crc7(p, hdr->len - hdr_size(hdr));
464
465 if (c == vh->crc7)
466 return 0;
467
468 vc->name = "crc7";
469 vc->good_crc = &vh->crc7;
470 vc->bad_crc = &c;
471 vc->crc_len = 1;
472 log_verify_failure(hdr, vc);
473 return EILSEQ;
474}
475
476static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
477{
478 void *p = io_u_verify_off(hdr, vc);
479 struct vhdr_crc16 *vh = hdr_priv(hdr);
480 unsigned short c;
481
482 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
483
484 c = fio_crc16(p, hdr->len - hdr_size(hdr));
485
486 if (c == vh->crc16)
487 return 0;
488
489 vc->name = "crc16";
490 vc->good_crc = &vh->crc16;
491 vc->bad_crc = &c;
492 vc->crc_len = 2;
493 log_verify_failure(hdr, vc);
494 return EILSEQ;
495}
496
497static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
498{
499 void *p = io_u_verify_off(hdr, vc);
500 struct vhdr_crc64 *vh = hdr_priv(hdr);
501 unsigned long long c;
502
503 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
504
505 c = fio_crc64(p, hdr->len - hdr_size(hdr));
506
507 if (c == vh->crc64)
508 return 0;
509
510 vc->name = "crc64";
511 vc->good_crc = &vh->crc64;
512 vc->bad_crc = &c;
513 vc->crc_len = 8;
514 log_verify_failure(hdr, vc);
515 return EILSEQ;
516}
517
518static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
519{
520 void *p = io_u_verify_off(hdr, vc);
521 struct vhdr_crc32 *vh = hdr_priv(hdr);
522 uint32_t c;
523
524 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
525
526 c = fio_crc32(p, hdr->len - hdr_size(hdr));
527
528 if (c == vh->crc32)
529 return 0;
530
531 vc->name = "crc32";
532 vc->good_crc = &vh->crc32;
533 vc->bad_crc = &c;
534 vc->crc_len = 4;
535 log_verify_failure(hdr, vc);
536 return EILSEQ;
537}
538
539static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
540{
541 void *p = io_u_verify_off(hdr, vc);
542 struct vhdr_crc32 *vh = hdr_priv(hdr);
543 uint32_t c;
544
545 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
546
547 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
548
549 if (c == vh->crc32)
550 return 0;
551
552 vc->name = "crc32c";
553 vc->good_crc = &vh->crc32;
554 vc->bad_crc = &c;
555 vc->crc_len = 4;
556 log_verify_failure(hdr, vc);
557 return EILSEQ;
558}
559
560static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
561{
562 void *p = io_u_verify_off(hdr, vc);
563 struct vhdr_md5 *vh = hdr_priv(hdr);
564 uint32_t hash[MD5_HASH_WORDS];
565 struct fio_md5_ctx md5_ctx = {
566 .hash = hash,
567 };
568
569 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
570
571 fio_md5_init(&md5_ctx);
572 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
573
574 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
575 return 0;
576
577 vc->name = "md5";
578 vc->good_crc = vh->md5_digest;
579 vc->bad_crc = md5_ctx.hash;
580 vc->crc_len = sizeof(hash);
581 log_verify_failure(hdr, vc);
582 return EILSEQ;
583}
584
585/*
586 * Push IO verification to a separate thread
587 */
588int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
589{
590 if (io_u->file)
591 put_file_log(td, io_u->file);
592
593 pthread_mutex_lock(&td->io_u_lock);
594
595 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
596 td->cur_depth--;
597 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
598 }
599 flist_del(&io_u->list);
600 flist_add_tail(&io_u->list, &td->verify_list);
601 io_u->flags |= IO_U_F_FREE_DEF;
602 pthread_mutex_unlock(&td->io_u_lock);
603
604 pthread_cond_signal(&td->verify_cond);
605 return 0;
606}
607
608static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
609{
610 static char zero_buf[1024];
611 unsigned int this_len, len;
612 int ret = 0;
613 void *p;
614
615 if (!td->o.trim_zero)
616 return 0;
617
618 len = io_u->buflen;
619 p = io_u->buf;
620 do {
621 this_len = sizeof(zero_buf);
622 if (this_len > len)
623 this_len = len;
624 if (memcmp(p, zero_buf, this_len)) {
625 ret = EILSEQ;
626 break;
627 }
628 len -= this_len;
629 p += this_len;
630 } while (len);
631
632 if (!ret)
633 return 0;
634
635 log_err("trim: verify failed at file %s offset %llu, length %lu"
636 ", block offset %lu\n",
637 io_u->file->file_name, io_u->offset, io_u->buflen,
638 (unsigned long) (p - io_u->buf));
639 return ret;
640}
641
642static int verify_header(struct io_u *io_u, struct verify_header *hdr)
643{
644 void *p = hdr;
645 uint32_t crc;
646
647 if (hdr->magic != FIO_HDR_MAGIC)
648 return 0;
649 if (hdr->len > io_u->buflen) {
650 log_err("fio: verify header exceeds buffer length (%u > %lu)\n", hdr->len, io_u->buflen);
651 return 0;
652 }
653
654 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
655 if (crc == hdr->crc32)
656 return 1;
657
658 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
659 return 0;
660}
661
662int verify_io_u(struct thread_data *td, struct io_u *io_u)
663{
664 struct verify_header *hdr;
665 unsigned int header_size, hdr_inc, hdr_num = 0;
666 void *p;
667 int ret;
668
669 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
670 return 0;
671 if (io_u->flags & IO_U_F_TRIMMED) {
672 ret = verify_trimmed_io_u(td, io_u);
673 goto done;
674 }
675
676 hdr_inc = get_hdr_inc(td, io_u);
677
678 ret = 0;
679 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
680 p += hdr_inc, hdr_num++) {
681 struct vcont vc = {
682 .io_u = io_u,
683 .hdr_num = hdr_num,
684 .td = td,
685 };
686 unsigned int verify_type;
687
688 if (ret && td->o.verify_fatal)
689 break;
690
691 header_size = __hdr_size(td->o.verify);
692 if (td->o.verify_offset)
693 memswp(p, p + td->o.verify_offset, header_size);
694 hdr = p;
695
696 if (!verify_header(io_u, hdr)) {
697 log_err("verify: bad magic header %x, wanted %x at "
698 "file %s offset %llu, length %u\n",
699 hdr->magic, FIO_HDR_MAGIC,
700 io_u->file->file_name,
701 io_u->offset + hdr_num * hdr->len, hdr->len);
702 return EILSEQ;
703 }
704
705 if (td->o.verify != VERIFY_NONE)
706 verify_type = td->o.verify;
707 else
708 verify_type = hdr->verify_type;
709
710 switch (verify_type) {
711 case VERIFY_MD5:
712 ret = verify_io_u_md5(hdr, &vc);
713 break;
714 case VERIFY_CRC64:
715 ret = verify_io_u_crc64(hdr, &vc);
716 break;
717 case VERIFY_CRC32C:
718 case VERIFY_CRC32C_INTEL:
719 ret = verify_io_u_crc32c(hdr, &vc);
720 break;
721 case VERIFY_CRC32:
722 ret = verify_io_u_crc32(hdr, &vc);
723 break;
724 case VERIFY_CRC16:
725 ret = verify_io_u_crc16(hdr, &vc);
726 break;
727 case VERIFY_CRC7:
728 ret = verify_io_u_crc7(hdr, &vc);
729 break;
730 case VERIFY_SHA256:
731 ret = verify_io_u_sha256(hdr, &vc);
732 break;
733 case VERIFY_SHA512:
734 ret = verify_io_u_sha512(hdr, &vc);
735 break;
736 case VERIFY_META:
737 ret = verify_io_u_meta(hdr, &vc);
738 break;
739 case VERIFY_SHA1:
740 ret = verify_io_u_sha1(hdr, &vc);
741 break;
742 case VERIFY_PATTERN:
743 ret = verify_io_u_pattern(hdr, &vc);
744 break;
745 default:
746 log_err("Bad verify type %u\n", hdr->verify_type);
747 ret = EINVAL;
748 }
749
750 if (ret && verify_type != hdr->verify_type)
751 log_err("fio: verify type mismatch (%u media, %u given)\n",
752 hdr->verify_type, verify_type);
753 }
754
755done:
756 if (ret && td->o.verify_fatal)
757 td->terminate = 1;
758
759 return ret;
760}
761
762static void fill_meta(struct verify_header *hdr, struct thread_data *td,
763 struct io_u *io_u, unsigned int header_num)
764{
765 struct vhdr_meta *vh = hdr_priv(hdr);
766
767 vh->thread = td->thread_number;
768
769 vh->time_sec = io_u->start_time.tv_sec;
770 vh->time_usec = io_u->start_time.tv_usec;
771
772 vh->numberio = td->io_issues[DDIR_WRITE];
773
774 vh->offset = io_u->offset + header_num * td->o.verify_interval;
775}
776
777static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
778{
779 struct vhdr_sha512 *vh = hdr_priv(hdr);
780 struct fio_sha512_ctx sha512_ctx = {
781 .buf = vh->sha512,
782 };
783
784 fio_sha512_init(&sha512_ctx);
785 fio_sha512_update(&sha512_ctx, p, len);
786}
787
788static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
789{
790 struct vhdr_sha256 *vh = hdr_priv(hdr);
791 struct fio_sha256_ctx sha256_ctx = {
792 .buf = vh->sha256,
793 };
794
795 fio_sha256_init(&sha256_ctx);
796 fio_sha256_update(&sha256_ctx, p, len);
797}
798
799static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
800{
801 struct vhdr_sha1 *vh = hdr_priv(hdr);
802 struct fio_sha1_ctx sha1_ctx = {
803 .H = vh->sha1,
804 };
805
806 fio_sha1_init(&sha1_ctx);
807 fio_sha1_update(&sha1_ctx, p, len);
808}
809
810static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
811{
812 struct vhdr_crc7 *vh = hdr_priv(hdr);
813
814 vh->crc7 = fio_crc7(p, len);
815}
816
817static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
818{
819 struct vhdr_crc16 *vh = hdr_priv(hdr);
820
821 vh->crc16 = fio_crc16(p, len);
822}
823
824static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
825{
826 struct vhdr_crc32 *vh = hdr_priv(hdr);
827
828 vh->crc32 = fio_crc32(p, len);
829}
830
831static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
832{
833 struct vhdr_crc32 *vh = hdr_priv(hdr);
834
835 vh->crc32 = fio_crc32c(p, len);
836}
837
838static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
839{
840 struct vhdr_crc64 *vh = hdr_priv(hdr);
841
842 vh->crc64 = fio_crc64(p, len);
843}
844
845static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
846{
847 struct vhdr_md5 *vh = hdr_priv(hdr);
848 struct fio_md5_ctx md5_ctx = {
849 .hash = (uint32_t *) vh->md5_digest,
850 };
851
852 fio_md5_init(&md5_ctx);
853 fio_md5_update(&md5_ctx, p, len);
854}
855
856static void populate_hdr(struct thread_data *td, struct io_u *io_u,
857 struct verify_header *hdr, unsigned int header_num,
858 unsigned int header_len)
859{
860 unsigned int data_len;
861 void *data, *p;
862
863 p = (void *) hdr;
864
865 hdr->magic = FIO_HDR_MAGIC;
866 hdr->verify_type = td->o.verify;
867 hdr->len = header_len;
868 hdr->rand_seed = io_u->rand_seed;
869 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
870
871 data_len = header_len - hdr_size(hdr);
872
873 data = p + hdr_size(hdr);
874 switch (td->o.verify) {
875 case VERIFY_MD5:
876 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
877 io_u, hdr->len);
878 fill_md5(hdr, data, data_len);
879 break;
880 case VERIFY_CRC64:
881 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
882 io_u, hdr->len);
883 fill_crc64(hdr, data, data_len);
884 break;
885 case VERIFY_CRC32C:
886 case VERIFY_CRC32C_INTEL:
887 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
888 io_u, hdr->len);
889 fill_crc32c(hdr, data, data_len);
890 break;
891 case VERIFY_CRC32:
892 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
893 io_u, hdr->len);
894 fill_crc32(hdr, data, data_len);
895 break;
896 case VERIFY_CRC16:
897 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
898 io_u, hdr->len);
899 fill_crc16(hdr, data, data_len);
900 break;
901 case VERIFY_CRC7:
902 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
903 io_u, hdr->len);
904 fill_crc7(hdr, data, data_len);
905 break;
906 case VERIFY_SHA256:
907 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
908 io_u, hdr->len);
909 fill_sha256(hdr, data, data_len);
910 break;
911 case VERIFY_SHA512:
912 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
913 io_u, hdr->len);
914 fill_sha512(hdr, data, data_len);
915 break;
916 case VERIFY_META:
917 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
918 io_u, hdr->len);
919 fill_meta(hdr, td, io_u, header_num);
920 break;
921 case VERIFY_SHA1:
922 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
923 io_u, hdr->len);
924 fill_sha1(hdr, data, data_len);
925 break;
926 case VERIFY_PATTERN:
927 /* nothing to do here */
928 break;
929 default:
930 log_err("fio: bad verify type: %d\n", td->o.verify);
931 assert(0);
932 }
933 if (td->o.verify_offset)
934 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
935}
936
937/*
938 * fill body of io_u->buf with random data and add a header with the
939 * checksum of choice
940 */
941void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
942{
943 if (td->o.verify == VERIFY_NULL)
944 return;
945
946 fill_pattern_headers(td, io_u, 0, 0);
947}
948
949int get_next_verify(struct thread_data *td, struct io_u *io_u)
950{
951 struct io_piece *ipo = NULL;
952
953 /*
954 * this io_u is from a requeue, we already filled the offsets
955 */
956 if (io_u->file)
957 return 0;
958
959 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
960 struct rb_node *n = rb_first(&td->io_hist_tree);
961
962 ipo = rb_entry(n, struct io_piece, rb_node);
963 rb_erase(n, &td->io_hist_tree);
964 assert(ipo->flags & IP_F_ONRB);
965 ipo->flags &= ~IP_F_ONRB;
966 } else if (!flist_empty(&td->io_hist_list)) {
967 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
968 flist_del(&ipo->list);
969 assert(ipo->flags & IP_F_ONLIST);
970 ipo->flags &= ~IP_F_ONLIST;
971 }
972
973 if (ipo) {
974 td->io_hist_len--;
975
976 io_u->offset = ipo->offset;
977 io_u->buflen = ipo->len;
978 io_u->file = ipo->file;
979 io_u->flags |= IO_U_F_VER_LIST;
980
981 if (ipo->flags & IP_F_TRIMMED)
982 io_u->flags |= IO_U_F_TRIMMED;
983
984 if (!fio_file_open(io_u->file)) {
985 int r = td_io_open_file(td, io_u->file);
986
987 if (r) {
988 dprint(FD_VERIFY, "failed file %s open\n",
989 io_u->file->file_name);
990 return 1;
991 }
992 }
993
994 get_file(ipo->file);
995 assert(fio_file_open(io_u->file));
996 io_u->ddir = DDIR_READ;
997 io_u->xfer_buf = io_u->buf;
998 io_u->xfer_buflen = io_u->buflen;
999
1000 remove_trim_entry(td, ipo);
1001 free(ipo);
1002 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1003 return 0;
1004 }
1005
1006 dprint(FD_VERIFY, "get_next_verify: empty\n");
1007 return 1;
1008}
1009
1010static void *verify_async_thread(void *data)
1011{
1012 struct thread_data *td = data;
1013 struct io_u *io_u;
1014 int ret = 0;
1015
1016 if (td->o.verify_cpumask_set &&
1017 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1018 log_err("fio: failed setting verify thread affinity\n");
1019 goto done;
1020 }
1021
1022 do {
1023 FLIST_HEAD(list);
1024
1025 read_barrier();
1026 if (td->verify_thread_exit)
1027 break;
1028
1029 pthread_mutex_lock(&td->io_u_lock);
1030
1031 while (flist_empty(&td->verify_list) &&
1032 !td->verify_thread_exit) {
1033 ret = pthread_cond_wait(&td->verify_cond,
1034 &td->io_u_lock);
1035 if (ret) {
1036 pthread_mutex_unlock(&td->io_u_lock);
1037 break;
1038 }
1039 }
1040
1041 flist_splice_init(&td->verify_list, &list);
1042 pthread_mutex_unlock(&td->io_u_lock);
1043
1044 if (flist_empty(&list))
1045 continue;
1046
1047 while (!flist_empty(&list)) {
1048 io_u = flist_entry(list.next, struct io_u, list);
1049 flist_del_init(&io_u->list);
1050
1051 ret = verify_io_u(td, io_u);
1052 put_io_u(td, io_u);
1053 if (!ret)
1054 continue;
1055 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1056 update_error_count(td, ret);
1057 td_clear_error(td);
1058 ret = 0;
1059 }
1060 }
1061 } while (!ret);
1062
1063 if (ret) {
1064 td_verror(td, ret, "async_verify");
1065 if (td->o.verify_fatal)
1066 td->terminate = 1;
1067 }
1068
1069done:
1070 pthread_mutex_lock(&td->io_u_lock);
1071 td->nr_verify_threads--;
1072 pthread_mutex_unlock(&td->io_u_lock);
1073
1074 pthread_cond_signal(&td->free_cond);
1075 return NULL;
1076}
1077
1078int verify_async_init(struct thread_data *td)
1079{
1080 int i, ret;
1081 pthread_attr_t attr;
1082
1083 pthread_attr_init(&attr);
1084 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1085
1086 td->verify_thread_exit = 0;
1087
1088 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1089 for (i = 0; i < td->o.verify_async; i++) {
1090 ret = pthread_create(&td->verify_threads[i], &attr,
1091 verify_async_thread, td);
1092 if (ret) {
1093 log_err("fio: async verify creation failed: %s\n",
1094 strerror(ret));
1095 break;
1096 }
1097 ret = pthread_detach(td->verify_threads[i]);
1098 if (ret) {
1099 log_err("fio: async verify thread detach failed: %s\n",
1100 strerror(ret));
1101 break;
1102 }
1103 td->nr_verify_threads++;
1104 }
1105
1106 pthread_attr_destroy(&attr);
1107
1108 if (i != td->o.verify_async) {
1109 log_err("fio: only %d verify threads started, exiting\n", i);
1110 td->verify_thread_exit = 1;
1111 write_barrier();
1112 pthread_cond_broadcast(&td->verify_cond);
1113 return 1;
1114 }
1115
1116 return 0;
1117}
1118
1119void verify_async_exit(struct thread_data *td)
1120{
1121 td->verify_thread_exit = 1;
1122 write_barrier();
1123 pthread_cond_broadcast(&td->verify_cond);
1124
1125 pthread_mutex_lock(&td->io_u_lock);
1126
1127 while (td->nr_verify_threads)
1128 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1129
1130 pthread_mutex_unlock(&td->io_u_lock);
1131 free(td->verify_threads);
1132 td->verify_threads = NULL;
1133}
fio - Flexible IO Tester