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verify: Fix test to not check for numberio when verify_only is true
[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 "trim.h"
14#include "lib/rand.h"
15#include "lib/hweight.h"
16#include "lib/pattern.h"
17#include "oslib/asprintf.h"
18
19#include "crc/md5.h"
20#include "crc/crc64.h"
21#include "crc/crc32.h"
22#include "crc/crc32c.h"
23#include "crc/crc16.h"
24#include "crc/crc7.h"
25#include "crc/sha256.h"
26#include "crc/sha512.h"
27#include "crc/sha1.h"
28#include "crc/xxhash.h"
29#include "crc/sha3.h"
30
31static void populate_hdr(struct thread_data *td, struct io_u *io_u,
32 struct verify_header *hdr, unsigned int header_num,
33 unsigned int header_len);
34static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
35 struct verify_header *hdr, unsigned int header_num,
36 unsigned int header_len, uint64_t rand_seed);
37
38void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
39{
40 (void)cpy_pattern(td->o.buffer_pattern, td->o.buffer_pattern_bytes, p, len);
41}
42
43static void __fill_buffer(struct thread_options *o, uint64_t seed, void *p,
44 unsigned int len)
45{
46 __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
47}
48
49static uint64_t fill_buffer(struct thread_data *td, void *p,
50 unsigned int len)
51{
52 struct frand_state *fs = &td->verify_state;
53 struct thread_options *o = &td->o;
54
55 return fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
56}
57
58void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
59 struct io_u *io_u, uint64_t seed, int use_seed)
60{
61 struct thread_options *o = &td->o;
62
63 if (!o->verify_pattern_bytes) {
64 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
65
66 if (use_seed)
67 __fill_buffer(o, seed, p, len);
68 else
69 io_u->rand_seed = fill_buffer(td, p, len);
70 return;
71 }
72
73 /* Skip if we were here and we do not need to patch pattern
74 * with format */
75 if (!td->o.verify_fmt_sz && io_u->buf_filled_len >= len) {
76 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
77 o->verify_pattern_bytes, len);
78 return;
79 }
80
81 (void)paste_format(td->o.verify_pattern, td->o.verify_pattern_bytes,
82 td->o.verify_fmt, td->o.verify_fmt_sz,
83 p, len, io_u);
84 io_u->buf_filled_len = len;
85}
86
87static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
88{
89 unsigned int hdr_inc;
90
91 /*
92 * If we use bs_unaligned, buflen can be larger than the verify
93 * interval (which just defaults to the smallest blocksize possible).
94 */
95 hdr_inc = io_u->buflen;
96 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen &&
97 !td->o.bs_unaligned)
98 hdr_inc = td->o.verify_interval;
99
100 return hdr_inc;
101}
102
103static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
104 uint64_t seed, int use_seed)
105{
106 unsigned int hdr_inc, header_num;
107 struct verify_header *hdr;
108 void *p = io_u->buf;
109
110 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
111
112 hdr_inc = get_hdr_inc(td, io_u);
113 header_num = 0;
114 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
115 hdr = p;
116 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
117 header_num++;
118 }
119}
120
121static void memswp(void *buf1, void *buf2, unsigned int len)
122{
123 char swap[200];
124
125 assert(len <= sizeof(swap));
126
127 memcpy(&swap, buf1, len);
128 memcpy(buf1, buf2, len);
129 memcpy(buf2, &swap, len);
130}
131
132static void hexdump(void *buffer, int len)
133{
134 unsigned char *p = buffer;
135 int i;
136
137 for (i = 0; i < len; i++)
138 log_err("%02x", p[i]);
139 log_err("\n");
140}
141
142/*
143 * Prepare for separation of verify_header and checksum header
144 */
145static inline unsigned int __hdr_size(int verify_type)
146{
147 unsigned int len = 0;
148
149 switch (verify_type) {
150 case VERIFY_NONE:
151 case VERIFY_HDR_ONLY:
152 case VERIFY_NULL:
153 case VERIFY_PATTERN:
154 len = 0;
155 break;
156 case VERIFY_MD5:
157 len = sizeof(struct vhdr_md5);
158 break;
159 case VERIFY_CRC64:
160 len = sizeof(struct vhdr_crc64);
161 break;
162 case VERIFY_CRC32C:
163 case VERIFY_CRC32:
164 case VERIFY_CRC32C_INTEL:
165 len = sizeof(struct vhdr_crc32);
166 break;
167 case VERIFY_CRC16:
168 len = sizeof(struct vhdr_crc16);
169 break;
170 case VERIFY_CRC7:
171 len = sizeof(struct vhdr_crc7);
172 break;
173 case VERIFY_SHA256:
174 len = sizeof(struct vhdr_sha256);
175 break;
176 case VERIFY_SHA512:
177 len = sizeof(struct vhdr_sha512);
178 break;
179 case VERIFY_SHA3_224:
180 len = sizeof(struct vhdr_sha3_224);
181 break;
182 case VERIFY_SHA3_256:
183 len = sizeof(struct vhdr_sha3_256);
184 break;
185 case VERIFY_SHA3_384:
186 len = sizeof(struct vhdr_sha3_384);
187 break;
188 case VERIFY_SHA3_512:
189 len = sizeof(struct vhdr_sha3_512);
190 break;
191 case VERIFY_XXHASH:
192 len = sizeof(struct vhdr_xxhash);
193 break;
194 case VERIFY_SHA1:
195 len = sizeof(struct vhdr_sha1);
196 break;
197 case VERIFY_PATTERN_NO_HDR:
198 return 0;
199 default:
200 log_err("fio: unknown verify header!\n");
201 assert(0);
202 }
203
204 return len + sizeof(struct verify_header);
205}
206
207static inline unsigned int hdr_size(struct thread_data *td,
208 struct verify_header *hdr)
209{
210 if (td->o.verify == VERIFY_PATTERN_NO_HDR)
211 return 0;
212
213 return __hdr_size(hdr->verify_type);
214}
215
216static void *hdr_priv(struct verify_header *hdr)
217{
218 void *priv = hdr;
219
220 return priv + sizeof(struct verify_header);
221}
222
223/*
224 * Verify container, pass info to verify handlers and allow them to
225 * pass info back in case of error
226 */
227struct vcont {
228 /*
229 * Input
230 */
231 struct io_u *io_u;
232 unsigned int hdr_num;
233 struct thread_data *td;
234
235 /*
236 * Output, only valid in case of error
237 */
238 const char *name;
239 void *good_crc;
240 void *bad_crc;
241 unsigned int crc_len;
242};
243
244#define DUMP_BUF_SZ 255
245
246static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
247 const char *type, struct fio_file *f)
248{
249 char *ptr, *fname;
250 char sep[2] = { FIO_OS_PATH_SEPARATOR, 0 };
251 int ret, fd;
252
253 ptr = strdup(f->file_name);
254
255 if (asprintf(&fname, "%s%s%s.%llu.%s", aux_path ? : "",
256 aux_path ? sep : "", basename(ptr), offset, type) < 0) {
257 if (!fio_did_warn(FIO_WARN_VERIFY_BUF))
258 log_err("fio: not enough memory for dump buffer filename\n");
259 goto free_ptr;
260 }
261
262 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
263 if (fd < 0) {
264 perror("open verify buf file");
265 goto free_fname;
266 }
267
268 while (len) {
269 ret = write(fd, buf, len);
270 if (!ret)
271 break;
272 else if (ret < 0) {
273 perror("write verify buf file");
274 break;
275 }
276 len -= ret;
277 buf += ret;
278 }
279
280 close(fd);
281 log_err(" %s data dumped as %s\n", type, fname);
282
283free_fname:
284 free(fname);
285
286free_ptr:
287 free(ptr);
288}
289
290/*
291 * Dump the contents of the read block and re-generate the correct data
292 * and dump that too.
293 */
294static void __dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
295{
296 struct thread_data *td = vc->td;
297 struct io_u *io_u = vc->io_u;
298 unsigned long hdr_offset;
299 struct io_u dummy;
300 void *buf;
301
302 if (!td->o.verify_dump)
303 return;
304
305 /*
306 * Dump the contents we just read off disk
307 */
308 hdr_offset = vc->hdr_num * hdr->len;
309
310 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
311 "received", vc->io_u->file);
312
313 /*
314 * Allocate a new buf and re-generate the original data
315 */
316 buf = malloc(io_u->buflen);
317 dummy = *io_u;
318 dummy.buf = buf;
319 dummy.rand_seed = hdr->rand_seed;
320 dummy.buf_filled_len = 0;
321 dummy.buflen = io_u->buflen;
322
323 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
324
325 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
326 "expected", vc->io_u->file);
327 free(buf);
328}
329
330static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
331{
332 struct thread_data *td = vc->td;
333 struct verify_header shdr;
334
335 if (td->o.verify == VERIFY_PATTERN_NO_HDR) {
336 __fill_hdr(td, vc->io_u, &shdr, 0, vc->io_u->buflen, 0);
337 hdr = &shdr;
338 }
339
340 __dump_verify_buffers(hdr, vc);
341}
342
343static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
344{
345 unsigned long long offset;
346
347 offset = vc->io_u->offset;
348 offset += vc->hdr_num * hdr->len;
349 log_err("%.8s: verify failed at file %s offset %llu, length %u"
350 " (requested block: offset=%llu, length=%llu)\n",
351 vc->name, vc->io_u->file->file_name, offset, hdr->len,
352 vc->io_u->offset, vc->io_u->buflen);
353
354 if (vc->good_crc && vc->bad_crc) {
355 log_err(" Expected CRC: ");
356 hexdump(vc->good_crc, vc->crc_len);
357 log_err(" Received CRC: ");
358 hexdump(vc->bad_crc, vc->crc_len);
359 }
360
361 dump_verify_buffers(hdr, vc);
362}
363
364/*
365 * Return data area 'header_num'
366 */
367static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
368{
369 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(vc->td, hdr);
370}
371
372static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
373{
374 struct thread_data *td = vc->td;
375 struct io_u *io_u = vc->io_u;
376 char *buf, *pattern;
377 unsigned int header_size = __hdr_size(td->o.verify);
378 unsigned int len, mod, i, pattern_size;
379 int rc;
380
381 pattern = td->o.verify_pattern;
382 pattern_size = td->o.verify_pattern_bytes;
383 assert(pattern_size != 0);
384
385 (void)paste_format_inplace(pattern, pattern_size,
386 td->o.verify_fmt, td->o.verify_fmt_sz, io_u);
387
388 buf = (char *) hdr + header_size;
389 len = get_hdr_inc(td, io_u) - header_size;
390 mod = (get_hdr_inc(td, io_u) * vc->hdr_num + header_size) % pattern_size;
391
392 rc = cmp_pattern(pattern, pattern_size, mod, buf, len);
393 if (!rc)
394 return 0;
395
396 /* Slow path, compare each byte */
397 for (i = 0; i < len; i++) {
398 if (buf[i] != pattern[mod]) {
399 unsigned int bits;
400
401 bits = hweight8(buf[i] ^ pattern[mod]);
402 log_err("fio: got pattern '%02x', wanted '%02x'. Bad bits %d\n",
403 (unsigned char)buf[i],
404 (unsigned char)pattern[mod],
405 bits);
406 log_err("fio: bad pattern block offset %u\n", i);
407 vc->name = "pattern";
408 log_verify_failure(hdr, vc);
409 return EILSEQ;
410 }
411 mod++;
412 if (mod == td->o.verify_pattern_bytes)
413 mod = 0;
414 }
415
416 /* Unreachable line */
417 assert(0);
418 return EILSEQ;
419}
420
421static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
422{
423 void *p = io_u_verify_off(hdr, vc);
424 struct vhdr_xxhash *vh = hdr_priv(hdr);
425 uint32_t hash;
426 void *state;
427
428 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
429
430 state = XXH32_init(1);
431 XXH32_update(state, p, hdr->len - hdr_size(vc->td, hdr));
432 hash = XXH32_digest(state);
433
434 if (vh->hash == hash)
435 return 0;
436
437 vc->name = "xxhash";
438 vc->good_crc = &vh->hash;
439 vc->bad_crc = &hash;
440 vc->crc_len = sizeof(hash);
441 log_verify_failure(hdr, vc);
442 return EILSEQ;
443}
444
445static int verify_io_u_sha3(struct verify_header *hdr, struct vcont *vc,
446 struct fio_sha3_ctx *sha3_ctx, uint8_t *sha,
447 unsigned int sha_size, const char *name)
448{
449 void *p = io_u_verify_off(hdr, vc);
450
451 dprint(FD_VERIFY, "%s verify io_u %p, len %u\n", name, vc->io_u, hdr->len);
452
453 fio_sha3_update(sha3_ctx, p, hdr->len - hdr_size(vc->td, hdr));
454 fio_sha3_final(sha3_ctx);
455
456 if (!memcmp(sha, sha3_ctx->sha, sha_size))
457 return 0;
458
459 vc->name = name;
460 vc->good_crc = sha;
461 vc->bad_crc = sha3_ctx->sha;
462 vc->crc_len = sha_size;
463 log_verify_failure(hdr, vc);
464 return EILSEQ;
465}
466
467static int verify_io_u_sha3_224(struct verify_header *hdr, struct vcont *vc)
468{
469 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
470 uint8_t sha[SHA3_224_DIGEST_SIZE];
471 struct fio_sha3_ctx sha3_ctx = {
472 .sha = sha,
473 };
474
475 fio_sha3_224_init(&sha3_ctx);
476
477 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
478 SHA3_224_DIGEST_SIZE, "sha3-224");
479}
480
481static int verify_io_u_sha3_256(struct verify_header *hdr, struct vcont *vc)
482{
483 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
484 uint8_t sha[SHA3_256_DIGEST_SIZE];
485 struct fio_sha3_ctx sha3_ctx = {
486 .sha = sha,
487 };
488
489 fio_sha3_256_init(&sha3_ctx);
490
491 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
492 SHA3_256_DIGEST_SIZE, "sha3-256");
493}
494
495static int verify_io_u_sha3_384(struct verify_header *hdr, struct vcont *vc)
496{
497 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
498 uint8_t sha[SHA3_384_DIGEST_SIZE];
499 struct fio_sha3_ctx sha3_ctx = {
500 .sha = sha,
501 };
502
503 fio_sha3_384_init(&sha3_ctx);
504
505 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
506 SHA3_384_DIGEST_SIZE, "sha3-384");
507}
508
509static int verify_io_u_sha3_512(struct verify_header *hdr, struct vcont *vc)
510{
511 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
512 uint8_t sha[SHA3_512_DIGEST_SIZE];
513 struct fio_sha3_ctx sha3_ctx = {
514 .sha = sha,
515 };
516
517 fio_sha3_512_init(&sha3_ctx);
518
519 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
520 SHA3_512_DIGEST_SIZE, "sha3-512");
521}
522
523static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
524{
525 void *p = io_u_verify_off(hdr, vc);
526 struct vhdr_sha512 *vh = hdr_priv(hdr);
527 uint8_t sha512[128];
528 struct fio_sha512_ctx sha512_ctx = {
529 .buf = sha512,
530 };
531
532 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
533
534 fio_sha512_init(&sha512_ctx);
535 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(vc->td, hdr));
536
537 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
538 return 0;
539
540 vc->name = "sha512";
541 vc->good_crc = vh->sha512;
542 vc->bad_crc = sha512_ctx.buf;
543 vc->crc_len = sizeof(vh->sha512);
544 log_verify_failure(hdr, vc);
545 return EILSEQ;
546}
547
548static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
549{
550 void *p = io_u_verify_off(hdr, vc);
551 struct vhdr_sha256 *vh = hdr_priv(hdr);
552 uint8_t sha256[64];
553 struct fio_sha256_ctx sha256_ctx = {
554 .buf = sha256,
555 };
556
557 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
558
559 fio_sha256_init(&sha256_ctx);
560 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(vc->td, hdr));
561 fio_sha256_final(&sha256_ctx);
562
563 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
564 return 0;
565
566 vc->name = "sha256";
567 vc->good_crc = vh->sha256;
568 vc->bad_crc = sha256_ctx.buf;
569 vc->crc_len = sizeof(vh->sha256);
570 log_verify_failure(hdr, vc);
571 return EILSEQ;
572}
573
574static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
575{
576 void *p = io_u_verify_off(hdr, vc);
577 struct vhdr_sha1 *vh = hdr_priv(hdr);
578 uint32_t sha1[5];
579 struct fio_sha1_ctx sha1_ctx = {
580 .H = sha1,
581 };
582
583 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
584
585 fio_sha1_init(&sha1_ctx);
586 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(vc->td, hdr));
587 fio_sha1_final(&sha1_ctx);
588
589 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
590 return 0;
591
592 vc->name = "sha1";
593 vc->good_crc = vh->sha1;
594 vc->bad_crc = sha1_ctx.H;
595 vc->crc_len = sizeof(vh->sha1);
596 log_verify_failure(hdr, vc);
597 return EILSEQ;
598}
599
600static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
601{
602 void *p = io_u_verify_off(hdr, vc);
603 struct vhdr_crc7 *vh = hdr_priv(hdr);
604 unsigned char c;
605
606 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
607
608 c = fio_crc7(p, hdr->len - hdr_size(vc->td, hdr));
609
610 if (c == vh->crc7)
611 return 0;
612
613 vc->name = "crc7";
614 vc->good_crc = &vh->crc7;
615 vc->bad_crc = &c;
616 vc->crc_len = 1;
617 log_verify_failure(hdr, vc);
618 return EILSEQ;
619}
620
621static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
622{
623 void *p = io_u_verify_off(hdr, vc);
624 struct vhdr_crc16 *vh = hdr_priv(hdr);
625 unsigned short c;
626
627 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
628
629 c = fio_crc16(p, hdr->len - hdr_size(vc->td, hdr));
630
631 if (c == vh->crc16)
632 return 0;
633
634 vc->name = "crc16";
635 vc->good_crc = &vh->crc16;
636 vc->bad_crc = &c;
637 vc->crc_len = 2;
638 log_verify_failure(hdr, vc);
639 return EILSEQ;
640}
641
642static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
643{
644 void *p = io_u_verify_off(hdr, vc);
645 struct vhdr_crc64 *vh = hdr_priv(hdr);
646 unsigned long long c;
647
648 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
649
650 c = fio_crc64(p, hdr->len - hdr_size(vc->td, hdr));
651
652 if (c == vh->crc64)
653 return 0;
654
655 vc->name = "crc64";
656 vc->good_crc = &vh->crc64;
657 vc->bad_crc = &c;
658 vc->crc_len = 8;
659 log_verify_failure(hdr, vc);
660 return EILSEQ;
661}
662
663static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
664{
665 void *p = io_u_verify_off(hdr, vc);
666 struct vhdr_crc32 *vh = hdr_priv(hdr);
667 uint32_t c;
668
669 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
670
671 c = fio_crc32(p, hdr->len - hdr_size(vc->td, hdr));
672
673 if (c == vh->crc32)
674 return 0;
675
676 vc->name = "crc32";
677 vc->good_crc = &vh->crc32;
678 vc->bad_crc = &c;
679 vc->crc_len = 4;
680 log_verify_failure(hdr, vc);
681 return EILSEQ;
682}
683
684static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
685{
686 void *p = io_u_verify_off(hdr, vc);
687 struct vhdr_crc32 *vh = hdr_priv(hdr);
688 uint32_t c;
689
690 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
691
692 c = fio_crc32c(p, hdr->len - hdr_size(vc->td, hdr));
693
694 if (c == vh->crc32)
695 return 0;
696
697 vc->name = "crc32c";
698 vc->good_crc = &vh->crc32;
699 vc->bad_crc = &c;
700 vc->crc_len = 4;
701 log_verify_failure(hdr, vc);
702 return EILSEQ;
703}
704
705static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
706{
707 void *p = io_u_verify_off(hdr, vc);
708 struct vhdr_md5 *vh = hdr_priv(hdr);
709 uint32_t hash[MD5_HASH_WORDS];
710 struct fio_md5_ctx md5_ctx = {
711 .hash = hash,
712 };
713
714 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
715
716 fio_md5_init(&md5_ctx);
717 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(vc->td, hdr));
718 fio_md5_final(&md5_ctx);
719
720 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
721 return 0;
722
723 vc->name = "md5";
724 vc->good_crc = vh->md5_digest;
725 vc->bad_crc = md5_ctx.hash;
726 vc->crc_len = sizeof(hash);
727 log_verify_failure(hdr, vc);
728 return EILSEQ;
729}
730
731/*
732 * Push IO verification to a separate thread
733 */
734int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
735{
736 struct io_u *io_u = *io_u_ptr;
737
738 pthread_mutex_lock(&td->io_u_lock);
739
740 if (io_u->file)
741 put_file_log(td, io_u->file);
742
743 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
744 td->cur_depth--;
745 io_u_clear(td, io_u, IO_U_F_IN_CUR_DEPTH);
746 }
747 flist_add_tail(&io_u->verify_list, &td->verify_list);
748 *io_u_ptr = NULL;
749
750 pthread_cond_signal(&td->verify_cond);
751 pthread_mutex_unlock(&td->io_u_lock);
752 return 0;
753}
754
755/*
756 * Thanks Rusty, for spending the time so I don't have to.
757 *
758 * http://rusty.ozlabs.org/?p=560
759 */
760static int mem_is_zero(const void *data, size_t length)
761{
762 const unsigned char *p = data;
763 size_t len;
764
765 /* Check first 16 bytes manually */
766 for (len = 0; len < 16; len++) {
767 if (!length)
768 return 1;
769 if (*p)
770 return 0;
771 p++;
772 length--;
773 }
774
775 /* Now we know that's zero, memcmp with self. */
776 return memcmp(data, p, length) == 0;
777}
778
779static int mem_is_zero_slow(const void *data, size_t length, size_t *offset)
780{
781 const unsigned char *p = data;
782
783 *offset = 0;
784 while (length) {
785 if (*p)
786 break;
787 (*offset)++;
788 length--;
789 p++;
790 }
791
792 return !length;
793}
794
795static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
796{
797 size_t offset;
798
799 if (!td->o.trim_zero)
800 return 0;
801
802 if (mem_is_zero(io_u->buf, io_u->buflen))
803 return 0;
804
805 mem_is_zero_slow(io_u->buf, io_u->buflen, &offset);
806
807 log_err("trim: verify failed at file %s offset %llu, length %llu"
808 ", block offset %lu\n",
809 io_u->file->file_name, io_u->offset, io_u->buflen,
810 (unsigned long) offset);
811 return EILSEQ;
812}
813
814static int verify_header(struct io_u *io_u, struct thread_data *td,
815 struct verify_header *hdr, unsigned int hdr_num,
816 unsigned int hdr_len)
817{
818 void *p = hdr;
819 uint32_t crc;
820
821 if (hdr->magic != FIO_HDR_MAGIC) {
822 log_err("verify: bad magic header %x, wanted %x",
823 hdr->magic, FIO_HDR_MAGIC);
824 goto err;
825 }
826 if (hdr->len != hdr_len) {
827 log_err("verify: bad header length %u, wanted %u",
828 hdr->len, hdr_len);
829 goto err;
830 }
831 if (hdr->rand_seed != io_u->rand_seed) {
832 log_err("verify: bad header rand_seed %"PRIu64
833 ", wanted %"PRIu64,
834 hdr->rand_seed, io_u->rand_seed);
835 goto err;
836 }
837 if (hdr->offset != io_u->offset + hdr_num * td->o.verify_interval) {
838 log_err("verify: bad header offset %"PRIu64
839 ", wanted %llu",
840 hdr->offset, io_u->offset);
841 goto err;
842 }
843
844 /*
845 * For read-only workloads, the program cannot be certain of the
846 * last numberio written to a block. Checking of numberio will be
847 * done only for workloads that write data. For verify_only,
848 * numberio check is skipped.
849 */
850 if (td_write(td) && (td_min_bs(td) == td_max_bs(td)) &&
851 !td->o.time_based)
852 if (!td->o.verify_only)
853 if (hdr->numberio != io_u->numberio) {
854 log_err("verify: bad header numberio %"PRIu16
855 ", wanted %"PRIu16,
856 hdr->numberio, io_u->numberio);
857 goto err;
858 }
859
860 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
861 if (crc != hdr->crc32) {
862 log_err("verify: bad header crc %x, calculated %x",
863 hdr->crc32, crc);
864 goto err;
865 }
866 return 0;
867
868err:
869 log_err(" at file %s offset %llu, length %u"
870 " (requested block: offset=%llu, length=%llu)\n",
871 io_u->file->file_name,
872 io_u->offset + hdr_num * hdr_len, hdr_len,
873 io_u->offset, io_u->buflen);
874
875 if (td->o.verify_dump)
876 dump_buf(p, hdr_len, io_u->offset + hdr_num * hdr_len,
877 "hdr_fail", io_u->file);
878
879 return EILSEQ;
880}
881
882int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
883{
884 struct verify_header *hdr;
885 struct io_u *io_u = *io_u_ptr;
886 unsigned int header_size, hdr_inc, hdr_num = 0;
887 void *p;
888 int ret;
889
890 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
891 return 0;
892 /*
893 * If the IO engine is faking IO (like null), then just pretend
894 * we verified everything.
895 */
896 if (td_ioengine_flagged(td, FIO_FAKEIO))
897 return 0;
898
899 if (io_u->flags & IO_U_F_TRIMMED) {
900 ret = verify_trimmed_io_u(td, io_u);
901 goto done;
902 }
903
904 hdr_inc = get_hdr_inc(td, io_u);
905
906 ret = 0;
907 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
908 p += hdr_inc, hdr_num++) {
909 struct vcont vc = {
910 .io_u = io_u,
911 .hdr_num = hdr_num,
912 .td = td,
913 };
914 unsigned int verify_type;
915
916 if (ret && td->o.verify_fatal)
917 break;
918
919 header_size = __hdr_size(td->o.verify);
920 if (td->o.verify_offset)
921 memswp(p, p + td->o.verify_offset, header_size);
922 hdr = p;
923
924 /*
925 * Make rand_seed check pass when have verify_backlog.
926 */
927 if (!td_rw(td) || (td->flags & TD_F_VER_BACKLOG))
928 io_u->rand_seed = hdr->rand_seed;
929
930 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
931 ret = verify_header(io_u, td, hdr, hdr_num, hdr_inc);
932 if (ret)
933 return ret;
934 }
935
936 if (td->o.verify != VERIFY_NONE)
937 verify_type = td->o.verify;
938 else
939 verify_type = hdr->verify_type;
940
941 switch (verify_type) {
942 case VERIFY_HDR_ONLY:
943 /* Header is always verified, check if pattern is left
944 * for verification. */
945 if (td->o.verify_pattern_bytes)
946 ret = verify_io_u_pattern(hdr, &vc);
947 break;
948 case VERIFY_MD5:
949 ret = verify_io_u_md5(hdr, &vc);
950 break;
951 case VERIFY_CRC64:
952 ret = verify_io_u_crc64(hdr, &vc);
953 break;
954 case VERIFY_CRC32C:
955 case VERIFY_CRC32C_INTEL:
956 ret = verify_io_u_crc32c(hdr, &vc);
957 break;
958 case VERIFY_CRC32:
959 ret = verify_io_u_crc32(hdr, &vc);
960 break;
961 case VERIFY_CRC16:
962 ret = verify_io_u_crc16(hdr, &vc);
963 break;
964 case VERIFY_CRC7:
965 ret = verify_io_u_crc7(hdr, &vc);
966 break;
967 case VERIFY_SHA256:
968 ret = verify_io_u_sha256(hdr, &vc);
969 break;
970 case VERIFY_SHA512:
971 ret = verify_io_u_sha512(hdr, &vc);
972 break;
973 case VERIFY_SHA3_224:
974 ret = verify_io_u_sha3_224(hdr, &vc);
975 break;
976 case VERIFY_SHA3_256:
977 ret = verify_io_u_sha3_256(hdr, &vc);
978 break;
979 case VERIFY_SHA3_384:
980 ret = verify_io_u_sha3_384(hdr, &vc);
981 break;
982 case VERIFY_SHA3_512:
983 ret = verify_io_u_sha3_512(hdr, &vc);
984 break;
985 case VERIFY_XXHASH:
986 ret = verify_io_u_xxhash(hdr, &vc);
987 break;
988 case VERIFY_SHA1:
989 ret = verify_io_u_sha1(hdr, &vc);
990 break;
991 case VERIFY_PATTERN:
992 case VERIFY_PATTERN_NO_HDR:
993 ret = verify_io_u_pattern(hdr, &vc);
994 break;
995 default:
996 log_err("Bad verify type %u\n", hdr->verify_type);
997 ret = EINVAL;
998 }
999
1000 if (ret && verify_type != hdr->verify_type)
1001 log_err("fio: verify type mismatch (%u media, %u given)\n",
1002 hdr->verify_type, verify_type);
1003 }
1004
1005done:
1006 if (ret && td->o.verify_fatal)
1007 fio_mark_td_terminate(td);
1008
1009 return ret;
1010}
1011
1012static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
1013{
1014 struct vhdr_xxhash *vh = hdr_priv(hdr);
1015 void *state;
1016
1017 state = XXH32_init(1);
1018 XXH32_update(state, p, len);
1019 vh->hash = XXH32_digest(state);
1020}
1021
1022static void fill_sha3(struct fio_sha3_ctx *sha3_ctx, void *p, unsigned int len)
1023{
1024 fio_sha3_update(sha3_ctx, p, len);
1025 fio_sha3_final(sha3_ctx);
1026}
1027
1028static void fill_sha3_224(struct verify_header *hdr, void *p, unsigned int len)
1029{
1030 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
1031 struct fio_sha3_ctx sha3_ctx = {
1032 .sha = vh->sha,
1033 };
1034
1035 fio_sha3_224_init(&sha3_ctx);
1036 fill_sha3(&sha3_ctx, p, len);
1037}
1038
1039static void fill_sha3_256(struct verify_header *hdr, void *p, unsigned int len)
1040{
1041 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
1042 struct fio_sha3_ctx sha3_ctx = {
1043 .sha = vh->sha,
1044 };
1045
1046 fio_sha3_256_init(&sha3_ctx);
1047 fill_sha3(&sha3_ctx, p, len);
1048}
1049
1050static void fill_sha3_384(struct verify_header *hdr, void *p, unsigned int len)
1051{
1052 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
1053 struct fio_sha3_ctx sha3_ctx = {
1054 .sha = vh->sha,
1055 };
1056
1057 fio_sha3_384_init(&sha3_ctx);
1058 fill_sha3(&sha3_ctx, p, len);
1059}
1060
1061static void fill_sha3_512(struct verify_header *hdr, void *p, unsigned int len)
1062{
1063 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
1064 struct fio_sha3_ctx sha3_ctx = {
1065 .sha = vh->sha,
1066 };
1067
1068 fio_sha3_512_init(&sha3_ctx);
1069 fill_sha3(&sha3_ctx, p, len);
1070}
1071
1072static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
1073{
1074 struct vhdr_sha512 *vh = hdr_priv(hdr);
1075 struct fio_sha512_ctx sha512_ctx = {
1076 .buf = vh->sha512,
1077 };
1078
1079 fio_sha512_init(&sha512_ctx);
1080 fio_sha512_update(&sha512_ctx, p, len);
1081}
1082
1083static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
1084{
1085 struct vhdr_sha256 *vh = hdr_priv(hdr);
1086 struct fio_sha256_ctx sha256_ctx = {
1087 .buf = vh->sha256,
1088 };
1089
1090 fio_sha256_init(&sha256_ctx);
1091 fio_sha256_update(&sha256_ctx, p, len);
1092 fio_sha256_final(&sha256_ctx);
1093}
1094
1095static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
1096{
1097 struct vhdr_sha1 *vh = hdr_priv(hdr);
1098 struct fio_sha1_ctx sha1_ctx = {
1099 .H = vh->sha1,
1100 };
1101
1102 fio_sha1_init(&sha1_ctx);
1103 fio_sha1_update(&sha1_ctx, p, len);
1104 fio_sha1_final(&sha1_ctx);
1105}
1106
1107static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
1108{
1109 struct vhdr_crc7 *vh = hdr_priv(hdr);
1110
1111 vh->crc7 = fio_crc7(p, len);
1112}
1113
1114static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
1115{
1116 struct vhdr_crc16 *vh = hdr_priv(hdr);
1117
1118 vh->crc16 = fio_crc16(p, len);
1119}
1120
1121static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
1122{
1123 struct vhdr_crc32 *vh = hdr_priv(hdr);
1124
1125 vh->crc32 = fio_crc32(p, len);
1126}
1127
1128static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
1129{
1130 struct vhdr_crc32 *vh = hdr_priv(hdr);
1131
1132 vh->crc32 = fio_crc32c(p, len);
1133}
1134
1135static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
1136{
1137 struct vhdr_crc64 *vh = hdr_priv(hdr);
1138
1139 vh->crc64 = fio_crc64(p, len);
1140}
1141
1142static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
1143{
1144 struct vhdr_md5 *vh = hdr_priv(hdr);
1145 struct fio_md5_ctx md5_ctx = {
1146 .hash = (uint32_t *) vh->md5_digest,
1147 };
1148
1149 fio_md5_init(&md5_ctx);
1150 fio_md5_update(&md5_ctx, p, len);
1151 fio_md5_final(&md5_ctx);
1152}
1153
1154static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
1155 struct verify_header *hdr, unsigned int header_num,
1156 unsigned int header_len, uint64_t rand_seed)
1157{
1158 void *p = hdr;
1159
1160 hdr->magic = FIO_HDR_MAGIC;
1161 hdr->verify_type = td->o.verify;
1162 hdr->len = header_len;
1163 hdr->rand_seed = rand_seed;
1164 hdr->offset = io_u->offset + header_num * td->o.verify_interval;
1165 hdr->time_sec = io_u->start_time.tv_sec;
1166 hdr->time_nsec = io_u->start_time.tv_nsec;
1167 hdr->thread = td->thread_number;
1168 hdr->numberio = io_u->numberio;
1169 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
1170}
1171
1172
1173static void fill_hdr(struct thread_data *td, struct io_u *io_u,
1174 struct verify_header *hdr, unsigned int header_num,
1175 unsigned int header_len, uint64_t rand_seed)
1176{
1177 if (td->o.verify != VERIFY_PATTERN_NO_HDR)
1178 __fill_hdr(td, io_u, hdr, header_num, header_len, rand_seed);
1179}
1180
1181static void populate_hdr(struct thread_data *td, struct io_u *io_u,
1182 struct verify_header *hdr, unsigned int header_num,
1183 unsigned int header_len)
1184{
1185 unsigned int data_len;
1186 void *data;
1187 char *p;
1188
1189 p = (char *) hdr;
1190
1191 fill_hdr(td, io_u, hdr, header_num, header_len, io_u->rand_seed);
1192
1193 if (header_len <= hdr_size(td, hdr)) {
1194 td_verror(td, EINVAL, "Blocksize too small");
1195 return;
1196 }
1197 data_len = header_len - hdr_size(td, hdr);
1198
1199 data = p + hdr_size(td, hdr);
1200 switch (td->o.verify) {
1201 case VERIFY_MD5:
1202 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
1203 io_u, hdr->len);
1204 fill_md5(hdr, data, data_len);
1205 break;
1206 case VERIFY_CRC64:
1207 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
1208 io_u, hdr->len);
1209 fill_crc64(hdr, data, data_len);
1210 break;
1211 case VERIFY_CRC32C:
1212 case VERIFY_CRC32C_INTEL:
1213 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1214 io_u, hdr->len);
1215 fill_crc32c(hdr, data, data_len);
1216 break;
1217 case VERIFY_CRC32:
1218 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1219 io_u, hdr->len);
1220 fill_crc32(hdr, data, data_len);
1221 break;
1222 case VERIFY_CRC16:
1223 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1224 io_u, hdr->len);
1225 fill_crc16(hdr, data, data_len);
1226 break;
1227 case VERIFY_CRC7:
1228 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1229 io_u, hdr->len);
1230 fill_crc7(hdr, data, data_len);
1231 break;
1232 case VERIFY_SHA256:
1233 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1234 io_u, hdr->len);
1235 fill_sha256(hdr, data, data_len);
1236 break;
1237 case VERIFY_SHA512:
1238 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1239 io_u, hdr->len);
1240 fill_sha512(hdr, data, data_len);
1241 break;
1242 case VERIFY_SHA3_224:
1243 dprint(FD_VERIFY, "fill sha3-224 io_u %p, len %u\n",
1244 io_u, hdr->len);
1245 fill_sha3_224(hdr, data, data_len);
1246 break;
1247 case VERIFY_SHA3_256:
1248 dprint(FD_VERIFY, "fill sha3-256 io_u %p, len %u\n",
1249 io_u, hdr->len);
1250 fill_sha3_256(hdr, data, data_len);
1251 break;
1252 case VERIFY_SHA3_384:
1253 dprint(FD_VERIFY, "fill sha3-384 io_u %p, len %u\n",
1254 io_u, hdr->len);
1255 fill_sha3_384(hdr, data, data_len);
1256 break;
1257 case VERIFY_SHA3_512:
1258 dprint(FD_VERIFY, "fill sha3-512 io_u %p, len %u\n",
1259 io_u, hdr->len);
1260 fill_sha3_512(hdr, data, data_len);
1261 break;
1262 case VERIFY_XXHASH:
1263 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1264 io_u, hdr->len);
1265 fill_xxhash(hdr, data, data_len);
1266 break;
1267 case VERIFY_SHA1:
1268 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1269 io_u, hdr->len);
1270 fill_sha1(hdr, data, data_len);
1271 break;
1272 case VERIFY_HDR_ONLY:
1273 case VERIFY_PATTERN:
1274 case VERIFY_PATTERN_NO_HDR:
1275 /* nothing to do here */
1276 break;
1277 default:
1278 log_err("fio: bad verify type: %d\n", td->o.verify);
1279 assert(0);
1280 }
1281
1282 if (td->o.verify_offset && hdr_size(td, hdr))
1283 memswp(p, p + td->o.verify_offset, hdr_size(td, hdr));
1284}
1285
1286/*
1287 * fill body of io_u->buf with random data and add a header with the
1288 * checksum of choice
1289 */
1290void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1291{
1292 if (td->o.verify == VERIFY_NULL)
1293 return;
1294
1295 io_u->numberio = td->io_issues[io_u->ddir];
1296
1297 fill_pattern_headers(td, io_u, 0, 0);
1298}
1299
1300int get_next_verify(struct thread_data *td, struct io_u *io_u)
1301{
1302 struct io_piece *ipo = NULL;
1303
1304 /*
1305 * this io_u is from a requeue, we already filled the offsets
1306 */
1307 if (io_u->file)
1308 return 0;
1309
1310 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1311 struct fio_rb_node *n = rb_first(&td->io_hist_tree);
1312
1313 ipo = rb_entry(n, struct io_piece, rb_node);
1314
1315 /*
1316 * Ensure that the associated IO has completed
1317 */
1318 read_barrier();
1319 if (ipo->flags & IP_F_IN_FLIGHT)
1320 goto nothing;
1321
1322 rb_erase(n, &td->io_hist_tree);
1323 assert(ipo->flags & IP_F_ONRB);
1324 ipo->flags &= ~IP_F_ONRB;
1325 } else if (!flist_empty(&td->io_hist_list)) {
1326 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1327
1328 /*
1329 * Ensure that the associated IO has completed
1330 */
1331 read_barrier();
1332 if (ipo->flags & IP_F_IN_FLIGHT)
1333 goto nothing;
1334
1335 flist_del(&ipo->list);
1336 assert(ipo->flags & IP_F_ONLIST);
1337 ipo->flags &= ~IP_F_ONLIST;
1338 }
1339
1340 if (ipo) {
1341 td->io_hist_len--;
1342
1343 io_u->offset = ipo->offset;
1344 io_u->buflen = ipo->len;
1345 io_u->numberio = ipo->numberio;
1346 io_u->file = ipo->file;
1347 io_u_set(td, io_u, IO_U_F_VER_LIST);
1348
1349 if (ipo->flags & IP_F_TRIMMED)
1350 io_u_set(td, io_u, IO_U_F_TRIMMED);
1351
1352 if (!fio_file_open(io_u->file)) {
1353 int r = td_io_open_file(td, io_u->file);
1354
1355 if (r) {
1356 dprint(FD_VERIFY, "failed file %s open\n",
1357 io_u->file->file_name);
1358 return 1;
1359 }
1360 }
1361
1362 get_file(ipo->file);
1363 assert(fio_file_open(io_u->file));
1364 io_u->ddir = DDIR_READ;
1365 io_u->xfer_buf = io_u->buf;
1366 io_u->xfer_buflen = io_u->buflen;
1367
1368 remove_trim_entry(td, ipo);
1369 free(ipo);
1370 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1371
1372 if (!td->o.verify_pattern_bytes) {
1373 io_u->rand_seed = __rand(&td->verify_state);
1374 if (sizeof(int) != sizeof(long *))
1375 io_u->rand_seed *= __rand(&td->verify_state);
1376 }
1377 return 0;
1378 }
1379
1380nothing:
1381 dprint(FD_VERIFY, "get_next_verify: empty\n");
1382 return 1;
1383}
1384
1385void fio_verify_init(struct thread_data *td)
1386{
1387 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1388 td->o.verify == VERIFY_CRC32C) {
1389 crc32c_arm64_probe();
1390 crc32c_intel_probe();
1391 }
1392}
1393
1394static void *verify_async_thread(void *data)
1395{
1396 struct thread_data *td = data;
1397 struct io_u *io_u;
1398 int ret = 0;
1399
1400 if (fio_option_is_set(&td->o, verify_cpumask) &&
1401 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1402 log_err("fio: failed setting verify thread affinity\n");
1403 goto done;
1404 }
1405
1406 do {
1407 FLIST_HEAD(list);
1408
1409 read_barrier();
1410 if (td->verify_thread_exit)
1411 break;
1412
1413 pthread_mutex_lock(&td->io_u_lock);
1414
1415 while (flist_empty(&td->verify_list) &&
1416 !td->verify_thread_exit) {
1417 ret = pthread_cond_wait(&td->verify_cond,
1418 &td->io_u_lock);
1419 if (ret) {
1420 pthread_mutex_unlock(&td->io_u_lock);
1421 break;
1422 }
1423 }
1424
1425 flist_splice_init(&td->verify_list, &list);
1426 pthread_mutex_unlock(&td->io_u_lock);
1427
1428 if (flist_empty(&list))
1429 continue;
1430
1431 while (!flist_empty(&list)) {
1432 io_u = flist_first_entry(&list, struct io_u, verify_list);
1433 flist_del_init(&io_u->verify_list);
1434
1435 io_u_set(td, io_u, IO_U_F_NO_FILE_PUT);
1436 ret = verify_io_u(td, &io_u);
1437
1438 put_io_u(td, io_u);
1439 if (!ret)
1440 continue;
1441 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1442 update_error_count(td, ret);
1443 td_clear_error(td);
1444 ret = 0;
1445 }
1446 }
1447 } while (!ret);
1448
1449 if (ret) {
1450 td_verror(td, ret, "async_verify");
1451 if (td->o.verify_fatal)
1452 fio_mark_td_terminate(td);
1453 }
1454
1455done:
1456 pthread_mutex_lock(&td->io_u_lock);
1457 td->nr_verify_threads--;
1458 pthread_cond_signal(&td->free_cond);
1459 pthread_mutex_unlock(&td->io_u_lock);
1460
1461 return NULL;
1462}
1463
1464int verify_async_init(struct thread_data *td)
1465{
1466 int i, ret;
1467 pthread_attr_t attr;
1468
1469 pthread_attr_init(&attr);
1470 pthread_attr_setstacksize(&attr, 2 * PTHREAD_STACK_MIN);
1471
1472 td->verify_thread_exit = 0;
1473
1474 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1475 for (i = 0; i < td->o.verify_async; i++) {
1476 ret = pthread_create(&td->verify_threads[i], &attr,
1477 verify_async_thread, td);
1478 if (ret) {
1479 log_err("fio: async verify creation failed: %s\n",
1480 strerror(ret));
1481 break;
1482 }
1483 ret = pthread_detach(td->verify_threads[i]);
1484 if (ret) {
1485 log_err("fio: async verify thread detach failed: %s\n",
1486 strerror(ret));
1487 break;
1488 }
1489 td->nr_verify_threads++;
1490 }
1491
1492 pthread_attr_destroy(&attr);
1493
1494 if (i != td->o.verify_async) {
1495 log_err("fio: only %d verify threads started, exiting\n", i);
1496
1497 pthread_mutex_lock(&td->io_u_lock);
1498 td->verify_thread_exit = 1;
1499 pthread_cond_broadcast(&td->verify_cond);
1500 pthread_mutex_unlock(&td->io_u_lock);
1501
1502 return 1;
1503 }
1504
1505 return 0;
1506}
1507
1508void verify_async_exit(struct thread_data *td)
1509{
1510 pthread_mutex_lock(&td->io_u_lock);
1511 td->verify_thread_exit = 1;
1512 pthread_cond_broadcast(&td->verify_cond);
1513
1514 while (td->nr_verify_threads)
1515 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1516
1517 pthread_mutex_unlock(&td->io_u_lock);
1518 free(td->verify_threads);
1519 td->verify_threads = NULL;
1520}
1521
1522int paste_blockoff(char *buf, unsigned int len, void *priv)
1523{
1524 struct io_u *io = priv;
1525 unsigned long long off;
1526
1527 typecheck(__typeof__(off), io->offset);
1528 off = cpu_to_le64((uint64_t)io->offset);
1529 len = min(len, (unsigned int)sizeof(off));
1530 memcpy(buf, &off, len);
1531 return 0;
1532}
1533
1534static int __fill_file_completions(struct thread_data *td,
1535 struct thread_io_list *s,
1536 struct fio_file *f, unsigned int *index)
1537{
1538 unsigned int comps;
1539 int i, j;
1540
1541 if (!f->last_write_comp)
1542 return 0;
1543
1544 if (td->io_blocks[DDIR_WRITE] < td->o.iodepth)
1545 comps = td->io_blocks[DDIR_WRITE];
1546 else
1547 comps = td->o.iodepth;
1548
1549 j = f->last_write_idx - 1;
1550 for (i = 0; i < comps; i++) {
1551 if (j == -1)
1552 j = td->o.iodepth - 1;
1553 s->comps[*index].fileno = __cpu_to_le64(f->fileno);
1554 s->comps[*index].offset = cpu_to_le64(f->last_write_comp[j]);
1555 (*index)++;
1556 j--;
1557 }
1558
1559 return comps;
1560}
1561
1562static int fill_file_completions(struct thread_data *td,
1563 struct thread_io_list *s, unsigned int *index)
1564{
1565 struct fio_file *f;
1566 unsigned int i;
1567 int comps = 0;
1568
1569 for_each_file(td, f, i)
1570 comps += __fill_file_completions(td, s, f, index);
1571
1572 return comps;
1573}
1574
1575struct all_io_list *get_all_io_list(int save_mask, size_t *sz)
1576{
1577 struct all_io_list *rep;
1578 struct thread_data *td;
1579 size_t depth;
1580 void *next;
1581 int i, nr;
1582
1583 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1584
1585 /*
1586 * Calculate reply space needed. We need one 'io_state' per thread,
1587 * and the size will vary depending on depth.
1588 */
1589 depth = 0;
1590 nr = 0;
1591 for_each_td(td, i) {
1592 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1593 continue;
1594 td->stop_io = 1;
1595 td->flags |= TD_F_VSTATE_SAVED;
1596 depth += (td->o.iodepth * td->o.nr_files);
1597 nr++;
1598 }
1599
1600 if (!nr)
1601 return NULL;
1602
1603 *sz = sizeof(*rep);
1604 *sz += nr * sizeof(struct thread_io_list);
1605 *sz += depth * sizeof(struct file_comp);
1606 rep = malloc(*sz);
1607 memset(rep, 0, *sz);
1608
1609 rep->threads = cpu_to_le64((uint64_t) nr);
1610
1611 next = &rep->state[0];
1612 for_each_td(td, i) {
1613 struct thread_io_list *s = next;
1614 unsigned int comps, index = 0;
1615
1616 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1617 continue;
1618
1619 comps = fill_file_completions(td, s, &index);
1620
1621 s->no_comps = cpu_to_le64((uint64_t) comps);
1622 s->depth = cpu_to_le64((uint64_t) td->o.iodepth);
1623 s->nofiles = cpu_to_le64((uint64_t) td->o.nr_files);
1624 s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]);
1625 s->index = cpu_to_le64((uint64_t) i);
1626 if (td->random_state.use64) {
1627 s->rand.state64.s[0] = cpu_to_le64(td->random_state.state64.s1);
1628 s->rand.state64.s[1] = cpu_to_le64(td->random_state.state64.s2);
1629 s->rand.state64.s[2] = cpu_to_le64(td->random_state.state64.s3);
1630 s->rand.state64.s[3] = cpu_to_le64(td->random_state.state64.s4);
1631 s->rand.state64.s[4] = cpu_to_le64(td->random_state.state64.s5);
1632 s->rand.state64.s[5] = 0;
1633 s->rand.use64 = cpu_to_le64((uint64_t)1);
1634 } else {
1635 s->rand.state32.s[0] = cpu_to_le32(td->random_state.state32.s1);
1636 s->rand.state32.s[1] = cpu_to_le32(td->random_state.state32.s2);
1637 s->rand.state32.s[2] = cpu_to_le32(td->random_state.state32.s3);
1638 s->rand.state32.s[3] = 0;
1639 s->rand.use64 = 0;
1640 }
1641 snprintf((char *) s->name, sizeof(s->name), "%s", td->o.name);
1642 next = io_list_next(s);
1643 }
1644
1645 return rep;
1646}
1647
1648static int open_state_file(const char *name, const char *prefix, int num,
1649 int for_write)
1650{
1651 char out[PATH_MAX];
1652 int flags;
1653 int fd;
1654
1655 if (for_write)
1656 flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC;
1657 else
1658 flags = O_RDONLY;
1659
1660 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1661
1662 fd = open(out, flags, 0644);
1663 if (fd == -1) {
1664 perror("fio: open state file");
1665 log_err("fio: state file: %s (for_write=%d)\n", out, for_write);
1666 return -1;
1667 }
1668
1669 return fd;
1670}
1671
1672static int write_thread_list_state(struct thread_io_list *s,
1673 const char *prefix)
1674{
1675 struct verify_state_hdr hdr;
1676 uint64_t crc;
1677 ssize_t ret;
1678 int fd;
1679
1680 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1681 if (fd == -1)
1682 return 1;
1683
1684 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1685
1686 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1687 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1688 hdr.crc = cpu_to_le64(crc);
1689 ret = write(fd, &hdr, sizeof(hdr));
1690 if (ret != sizeof(hdr))
1691 goto write_fail;
1692
1693 ret = write(fd, s, thread_io_list_sz(s));
1694 if (ret != thread_io_list_sz(s)) {
1695write_fail:
1696 if (ret < 0)
1697 perror("fio: write state file");
1698 log_err("fio: failed to write state file\n");
1699 ret = 1;
1700 } else
1701 ret = 0;
1702
1703 close(fd);
1704 return ret;
1705}
1706
1707void __verify_save_state(struct all_io_list *state, const char *prefix)
1708{
1709 struct thread_io_list *s = &state->state[0];
1710 unsigned int i;
1711
1712 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1713 write_thread_list_state(s, prefix);
1714 s = io_list_next(s);
1715 }
1716}
1717
1718void verify_save_state(int mask)
1719{
1720 struct all_io_list *state;
1721 size_t sz;
1722
1723 state = get_all_io_list(mask, &sz);
1724 if (state) {
1725 char prefix[PATH_MAX];
1726
1727 if (aux_path)
1728 sprintf(prefix, "%s%clocal", aux_path, FIO_OS_PATH_SEPARATOR);
1729 else
1730 strcpy(prefix, "local");
1731
1732 __verify_save_state(state, prefix);
1733 free(state);
1734 }
1735}
1736
1737void verify_free_state(struct thread_data *td)
1738{
1739 if (td->vstate)
1740 free(td->vstate);
1741}
1742
1743void verify_assign_state(struct thread_data *td, void *p)
1744{
1745 struct thread_io_list *s = p;
1746 int i;
1747
1748 s->no_comps = le64_to_cpu(s->no_comps);
1749 s->depth = le32_to_cpu(s->depth);
1750 s->nofiles = le32_to_cpu(s->nofiles);
1751 s->numberio = le64_to_cpu(s->numberio);
1752 s->rand.use64 = le64_to_cpu(s->rand.use64);
1753
1754 if (s->rand.use64) {
1755 for (i = 0; i < 6; i++)
1756 s->rand.state64.s[i] = le64_to_cpu(s->rand.state64.s[i]);
1757 } else {
1758 for (i = 0; i < 4; i++)
1759 s->rand.state32.s[i] = le32_to_cpu(s->rand.state32.s[i]);
1760 }
1761
1762 for (i = 0; i < s->no_comps; i++) {
1763 s->comps[i].fileno = le64_to_cpu(s->comps[i].fileno);
1764 s->comps[i].offset = le64_to_cpu(s->comps[i].offset);
1765 }
1766
1767 td->vstate = p;
1768}
1769
1770int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s)
1771{
1772 uint64_t crc;
1773
1774 hdr->version = le64_to_cpu(hdr->version);
1775 hdr->size = le64_to_cpu(hdr->size);
1776 hdr->crc = le64_to_cpu(hdr->crc);
1777
1778 if (hdr->version != VSTATE_HDR_VERSION)
1779 return 1;
1780
1781 crc = fio_crc32c((void *)s, hdr->size);
1782 if (crc != hdr->crc)
1783 return 1;
1784
1785 return 0;
1786}
1787
1788int verify_load_state(struct thread_data *td, const char *prefix)
1789{
1790 struct verify_state_hdr hdr;
1791 void *s = NULL;
1792 uint64_t crc;
1793 ssize_t ret;
1794 int fd;
1795
1796 if (!td->o.verify_state)
1797 return 0;
1798
1799 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1800 if (fd == -1)
1801 return 1;
1802
1803 ret = read(fd, &hdr, sizeof(hdr));
1804 if (ret != sizeof(hdr)) {
1805 if (ret < 0)
1806 td_verror(td, errno, "read verify state hdr");
1807 log_err("fio: failed reading verify state header\n");
1808 goto err;
1809 }
1810
1811 hdr.version = le64_to_cpu(hdr.version);
1812 hdr.size = le64_to_cpu(hdr.size);
1813 hdr.crc = le64_to_cpu(hdr.crc);
1814
1815 if (hdr.version != VSTATE_HDR_VERSION) {
1816 log_err("fio: unsupported (%d) version in verify state header\n",
1817 (unsigned int) hdr.version);
1818 goto err;
1819 }
1820
1821 s = malloc(hdr.size);
1822 ret = read(fd, s, hdr.size);
1823 if (ret != hdr.size) {
1824 if (ret < 0)
1825 td_verror(td, errno, "read verify state");
1826 log_err("fio: failed reading verity state\n");
1827 goto err;
1828 }
1829
1830 crc = fio_crc32c(s, hdr.size);
1831 if (crc != hdr.crc) {
1832 log_err("fio: verify state is corrupt\n");
1833 goto err;
1834 }
1835
1836 close(fd);
1837
1838 verify_assign_state(td, s);
1839 return 0;
1840err:
1841 if (s)
1842 free(s);
1843 close(fd);
1844 return 1;
1845}
1846
1847/*
1848 * Use the loaded verify state to know when to stop doing verification
1849 */
1850int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1851{
1852 struct thread_io_list *s = td->vstate;
1853 struct fio_file *f = io_u->file;
1854 int i;
1855
1856 if (!s || !f)
1857 return 0;
1858
1859 /*
1860 * If we're not into the window of issues - depth yet, continue. If
1861 * issue is shorter than depth, do check.
1862 */
1863 if ((td->io_blocks[DDIR_READ] < s->depth ||
1864 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1865 s->numberio > s->depth)
1866 return 0;
1867
1868 /*
1869 * We're in the window of having to check if this io was
1870 * completed or not. If the IO was seen as completed, then
1871 * lets verify it.
1872 */
1873 for (i = 0; i < s->no_comps; i++) {
1874 if (s->comps[i].fileno != f->fileno)
1875 continue;
1876 if (io_u->offset == s->comps[i].offset)
1877 return 0;
1878 }
1879
1880 /*
1881 * Not found, we have to stop
1882 */
1883 return 1;
1884}
fio - Flexible IO Tester