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