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t/zbd: avoid test case 31 failure with small devices
[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 "arch/arch.h"
12#include "fio.h"
13#include "verify.h"
14#include "trim.h"
15#include "lib/rand.h"
16#include "lib/hweight.h"
17#include "lib/pattern.h"
18#include "oslib/asprintf.h"
19
20#include "crc/md5.h"
21#include "crc/crc64.h"
22#include "crc/crc32.h"
23#include "crc/crc32c.h"
24#include "crc/crc16.h"
25#include "crc/crc7.h"
26#include "crc/sha256.h"
27#include "crc/sha512.h"
28#include "crc/sha1.h"
29#include "crc/xxhash.h"
30#include "crc/sha3.h"
31
32static void populate_hdr(struct thread_data *td, struct io_u *io_u,
33 struct verify_header *hdr, unsigned int header_num,
34 unsigned int header_len);
35static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
36 struct verify_header *hdr, unsigned int header_num,
37 unsigned int header_len, uint64_t rand_seed);
38
39void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
40{
41 (void)cpy_pattern(td->o.buffer_pattern, td->o.buffer_pattern_bytes, p, len);
42}
43
44static void __fill_buffer(struct thread_options *o, uint64_t seed, void *p,
45 unsigned int len)
46{
47 __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
48}
49
50void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
51 struct io_u *io_u, uint64_t seed, int use_seed)
52{
53 struct thread_options *o = &td->o;
54
55 if (!o->verify_pattern_bytes) {
56 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
57
58 if (!use_seed) {
59 seed = __rand(&td->verify_state);
60 if (sizeof(int) != sizeof(long *))
61 seed *= (unsigned long)__rand(&td->verify_state);
62 }
63 io_u->rand_seed = seed;
64 __fill_buffer(o, seed, p, len);
65 return;
66 }
67
68 /* Skip if we were here and we do not need to patch pattern
69 * with format */
70 if (!td->o.verify_fmt_sz && io_u->buf_filled_len >= len) {
71 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
72 o->verify_pattern_bytes, len);
73 return;
74 }
75
76 (void)paste_format(td->o.verify_pattern, td->o.verify_pattern_bytes,
77 td->o.verify_fmt, td->o.verify_fmt_sz,
78 p, len, io_u);
79 io_u->buf_filled_len = len;
80}
81
82static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
83{
84 unsigned int hdr_inc;
85
86 /*
87 * If we use bs_unaligned, buflen can be larger than the verify
88 * interval (which just defaults to the smallest blocksize possible).
89 */
90 hdr_inc = io_u->buflen;
91 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen &&
92 !td->o.bs_unaligned)
93 hdr_inc = td->o.verify_interval;
94
95 return hdr_inc;
96}
97
98static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
99 uint64_t seed, int use_seed)
100{
101 unsigned int hdr_inc, header_num;
102 struct verify_header *hdr;
103 void *p = io_u->buf;
104
105 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
106
107 hdr_inc = get_hdr_inc(td, io_u);
108 header_num = 0;
109 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
110 hdr = p;
111 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
112 header_num++;
113 }
114}
115
116static void memswp(void *buf1, void *buf2, unsigned int len)
117{
118 char swap[200];
119
120 assert(len <= sizeof(swap));
121
122 memcpy(&swap, buf1, len);
123 memcpy(buf1, buf2, len);
124 memcpy(buf2, &swap, len);
125}
126
127static void hexdump(void *buffer, int len)
128{
129 unsigned char *p = buffer;
130 int i;
131
132 for (i = 0; i < len; i++)
133 log_err("%02x", p[i]);
134 log_err("\n");
135}
136
137/*
138 * Prepare for separation of verify_header and checksum header
139 */
140static inline unsigned int __hdr_size(int verify_type)
141{
142 unsigned int len = 0;
143
144 switch (verify_type) {
145 case VERIFY_NONE:
146 case VERIFY_HDR_ONLY:
147 case VERIFY_NULL:
148 case VERIFY_PATTERN:
149 len = 0;
150 break;
151 case VERIFY_MD5:
152 len = sizeof(struct vhdr_md5);
153 break;
154 case VERIFY_CRC64:
155 len = sizeof(struct vhdr_crc64);
156 break;
157 case VERIFY_CRC32C:
158 case VERIFY_CRC32:
159 case VERIFY_CRC32C_INTEL:
160 len = sizeof(struct vhdr_crc32);
161 break;
162 case VERIFY_CRC16:
163 len = sizeof(struct vhdr_crc16);
164 break;
165 case VERIFY_CRC7:
166 len = sizeof(struct vhdr_crc7);
167 break;
168 case VERIFY_SHA256:
169 len = sizeof(struct vhdr_sha256);
170 break;
171 case VERIFY_SHA512:
172 len = sizeof(struct vhdr_sha512);
173 break;
174 case VERIFY_SHA3_224:
175 len = sizeof(struct vhdr_sha3_224);
176 break;
177 case VERIFY_SHA3_256:
178 len = sizeof(struct vhdr_sha3_256);
179 break;
180 case VERIFY_SHA3_384:
181 len = sizeof(struct vhdr_sha3_384);
182 break;
183 case VERIFY_SHA3_512:
184 len = sizeof(struct vhdr_sha3_512);
185 break;
186 case VERIFY_XXHASH:
187 len = sizeof(struct vhdr_xxhash);
188 break;
189 case VERIFY_SHA1:
190 len = sizeof(struct vhdr_sha1);
191 break;
192 case VERIFY_PATTERN_NO_HDR:
193 return 0;
194 default:
195 log_err("fio: unknown verify header!\n");
196 assert(0);
197 }
198
199 return len + sizeof(struct verify_header);
200}
201
202static inline unsigned int hdr_size(struct thread_data *td,
203 struct verify_header *hdr)
204{
205 if (td->o.verify == VERIFY_PATTERN_NO_HDR)
206 return 0;
207
208 return __hdr_size(hdr->verify_type);
209}
210
211static void *hdr_priv(struct verify_header *hdr)
212{
213 void *priv = hdr;
214
215 return priv + sizeof(struct verify_header);
216}
217
218/*
219 * Verify container, pass info to verify handlers and allow them to
220 * pass info back in case of error
221 */
222struct vcont {
223 /*
224 * Input
225 */
226 struct io_u *io_u;
227 unsigned int hdr_num;
228 struct thread_data *td;
229
230 /*
231 * Output, only valid in case of error
232 */
233 const char *name;
234 void *good_crc;
235 void *bad_crc;
236 unsigned int crc_len;
237};
238
239#define DUMP_BUF_SZ 255
240
241static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
242 const char *type, struct fio_file *f)
243{
244 char *ptr, *fname;
245 char sep[2] = { FIO_OS_PATH_SEPARATOR, 0 };
246 int ret, fd;
247
248 ptr = strdup(f->file_name);
249
250 if (asprintf(&fname, "%s%s%s.%llu.%s", aux_path ? : "",
251 aux_path ? sep : "", basename(ptr), offset, type) < 0) {
252 if (!fio_did_warn(FIO_WARN_VERIFY_BUF))
253 log_err("fio: not enough memory for dump buffer filename\n");
254 goto free_ptr;
255 }
256
257 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
258 if (fd < 0) {
259 perror("open verify buf file");
260 goto free_fname;
261 }
262
263 while (len) {
264 ret = write(fd, buf, len);
265 if (!ret)
266 break;
267 else if (ret < 0) {
268 perror("write verify buf file");
269 break;
270 }
271 len -= ret;
272 buf += ret;
273 }
274
275 close(fd);
276 log_err(" %s data dumped as %s\n", type, fname);
277
278free_fname:
279 free(fname);
280
281free_ptr:
282 free(ptr);
283}
284
285/*
286 * Dump the contents of the read block and re-generate the correct data
287 * and dump that too.
288 */
289static void __dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
290{
291 struct thread_data *td = vc->td;
292 struct io_u *io_u = vc->io_u;
293 unsigned long hdr_offset;
294 struct io_u dummy;
295 void *buf;
296
297 if (!td->o.verify_dump)
298 return;
299
300 /*
301 * Dump the contents we just read off disk
302 */
303 hdr_offset = vc->hdr_num * hdr->len;
304
305 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->verify_offset + hdr_offset,
306 "received", vc->io_u->file);
307
308 /*
309 * Allocate a new buf and re-generate the original data
310 */
311 buf = malloc(io_u->buflen);
312 dummy = *io_u;
313 dummy.buf = buf;
314 dummy.rand_seed = hdr->rand_seed;
315 dummy.buf_filled_len = 0;
316 dummy.buflen = io_u->buflen;
317
318 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
319
320 dump_buf(buf + hdr_offset, hdr->len, io_u->verify_offset + hdr_offset,
321 "expected", vc->io_u->file);
322 free(buf);
323}
324
325static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
326{
327 struct thread_data *td = vc->td;
328 struct verify_header shdr;
329
330 if (td->o.verify == VERIFY_PATTERN_NO_HDR) {
331 __fill_hdr(td, vc->io_u, &shdr, 0, vc->io_u->buflen, 0);
332 hdr = &shdr;
333 }
334
335 __dump_verify_buffers(hdr, vc);
336}
337
338static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
339{
340 unsigned long long offset;
341 uint32_t len;
342 struct thread_data *td = vc->td;
343
344 offset = vc->io_u->verify_offset;
345 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
346 len = hdr->len;
347 offset += (unsigned long long) vc->hdr_num * len;
348 } else {
349 len = vc->io_u->buflen;
350 }
351
352 log_err("%.8s: verify failed at file %s offset %llu, length %u"
353 " (requested block: offset=%llu, length=%llu, flags=%x)\n",
354 vc->name, vc->io_u->file->file_name, offset, len,
355 vc->io_u->verify_offset, vc->io_u->buflen, vc->io_u->flags);
356
357 if (vc->good_crc && vc->bad_crc) {
358 log_err(" Expected CRC: ");
359 hexdump(vc->good_crc, vc->crc_len);
360 log_err(" Received CRC: ");
361 hexdump(vc->bad_crc, vc->crc_len);
362 }
363
364 dump_verify_buffers(hdr, vc);
365}
366
367/*
368 * Return data area 'header_num'
369 */
370static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
371{
372 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(vc->td, hdr);
373}
374
375static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
376{
377 struct thread_data *td = vc->td;
378 struct io_u *io_u = vc->io_u;
379 char *buf, *pattern;
380 unsigned int header_size = __hdr_size(td->o.verify);
381 unsigned int len, mod, i, pattern_size;
382 int rc;
383
384 pattern = td->o.verify_pattern;
385 pattern_size = td->o.verify_pattern_bytes;
386 assert(pattern_size != 0);
387
388 (void)paste_format_inplace(pattern, pattern_size,
389 td->o.verify_fmt, td->o.verify_fmt_sz, io_u);
390
391 buf = (char *) hdr + header_size;
392 len = get_hdr_inc(td, io_u) - header_size;
393 mod = (get_hdr_inc(td, io_u) * vc->hdr_num + header_size) % pattern_size;
394
395 rc = cmp_pattern(pattern, pattern_size, mod, buf, len);
396 if (!rc)
397 return 0;
398
399 /* Slow path, compare each byte */
400 for (i = 0; i < len; i++) {
401 if (buf[i] != pattern[mod]) {
402 unsigned int bits;
403
404 bits = hweight8(buf[i] ^ pattern[mod]);
405 log_err("fio: got pattern '%02x', wanted '%02x'. Bad bits %d\n",
406 (unsigned char)buf[i],
407 (unsigned char)pattern[mod],
408 bits);
409 log_err("fio: bad pattern block offset %u\n",
410 i + header_size);
411 vc->name = "pattern";
412 log_verify_failure(hdr, vc);
413 return EILSEQ;
414 }
415 mod++;
416 if (mod == td->o.verify_pattern_bytes)
417 mod = 0;
418 }
419
420 /* Unreachable line */
421 assert(0);
422 return EILSEQ;
423}
424
425static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
426{
427 void *p = io_u_verify_off(hdr, vc);
428 struct vhdr_xxhash *vh = hdr_priv(hdr);
429 uint32_t hash;
430 void *state;
431
432 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
433
434 state = XXH32_init(1);
435 XXH32_update(state, p, hdr->len - hdr_size(vc->td, hdr));
436 hash = XXH32_digest(state);
437
438 if (vh->hash == hash)
439 return 0;
440
441 vc->name = "xxhash";
442 vc->good_crc = &vh->hash;
443 vc->bad_crc = &hash;
444 vc->crc_len = sizeof(hash);
445 log_verify_failure(hdr, vc);
446 return EILSEQ;
447}
448
449static int verify_io_u_sha3(struct verify_header *hdr, struct vcont *vc,
450 struct fio_sha3_ctx *sha3_ctx, uint8_t *sha,
451 unsigned int sha_size, const char *name)
452{
453 void *p = io_u_verify_off(hdr, vc);
454
455 dprint(FD_VERIFY, "%s verify io_u %p, len %u\n", name, vc->io_u, hdr->len);
456
457 fio_sha3_update(sha3_ctx, p, hdr->len - hdr_size(vc->td, hdr));
458 fio_sha3_final(sha3_ctx);
459
460 if (!memcmp(sha, sha3_ctx->sha, sha_size))
461 return 0;
462
463 vc->name = name;
464 vc->good_crc = sha;
465 vc->bad_crc = sha3_ctx->sha;
466 vc->crc_len = sha_size;
467 log_verify_failure(hdr, vc);
468 return EILSEQ;
469}
470
471static int verify_io_u_sha3_224(struct verify_header *hdr, struct vcont *vc)
472{
473 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
474 uint8_t sha[SHA3_224_DIGEST_SIZE];
475 struct fio_sha3_ctx sha3_ctx = {
476 .sha = sha,
477 };
478
479 fio_sha3_224_init(&sha3_ctx);
480
481 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
482 SHA3_224_DIGEST_SIZE, "sha3-224");
483}
484
485static int verify_io_u_sha3_256(struct verify_header *hdr, struct vcont *vc)
486{
487 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
488 uint8_t sha[SHA3_256_DIGEST_SIZE];
489 struct fio_sha3_ctx sha3_ctx = {
490 .sha = sha,
491 };
492
493 fio_sha3_256_init(&sha3_ctx);
494
495 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
496 SHA3_256_DIGEST_SIZE, "sha3-256");
497}
498
499static int verify_io_u_sha3_384(struct verify_header *hdr, struct vcont *vc)
500{
501 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
502 uint8_t sha[SHA3_384_DIGEST_SIZE];
503 struct fio_sha3_ctx sha3_ctx = {
504 .sha = sha,
505 };
506
507 fio_sha3_384_init(&sha3_ctx);
508
509 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
510 SHA3_384_DIGEST_SIZE, "sha3-384");
511}
512
513static int verify_io_u_sha3_512(struct verify_header *hdr, struct vcont *vc)
514{
515 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
516 uint8_t sha[SHA3_512_DIGEST_SIZE];
517 struct fio_sha3_ctx sha3_ctx = {
518 .sha = sha,
519 };
520
521 fio_sha3_512_init(&sha3_ctx);
522
523 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
524 SHA3_512_DIGEST_SIZE, "sha3-512");
525}
526
527static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
528{
529 void *p = io_u_verify_off(hdr, vc);
530 struct vhdr_sha512 *vh = hdr_priv(hdr);
531 uint8_t sha512[128];
532 struct fio_sha512_ctx sha512_ctx = {
533 .buf = sha512,
534 };
535
536 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
537
538 fio_sha512_init(&sha512_ctx);
539 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(vc->td, hdr));
540
541 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
542 return 0;
543
544 vc->name = "sha512";
545 vc->good_crc = vh->sha512;
546 vc->bad_crc = sha512_ctx.buf;
547 vc->crc_len = sizeof(vh->sha512);
548 log_verify_failure(hdr, vc);
549 return EILSEQ;
550}
551
552static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
553{
554 void *p = io_u_verify_off(hdr, vc);
555 struct vhdr_sha256 *vh = hdr_priv(hdr);
556 uint8_t sha256[64];
557 struct fio_sha256_ctx sha256_ctx = {
558 .buf = sha256,
559 };
560
561 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
562
563 fio_sha256_init(&sha256_ctx);
564 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(vc->td, hdr));
565 fio_sha256_final(&sha256_ctx);
566
567 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
568 return 0;
569
570 vc->name = "sha256";
571 vc->good_crc = vh->sha256;
572 vc->bad_crc = sha256_ctx.buf;
573 vc->crc_len = sizeof(vh->sha256);
574 log_verify_failure(hdr, vc);
575 return EILSEQ;
576}
577
578static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
579{
580 void *p = io_u_verify_off(hdr, vc);
581 struct vhdr_sha1 *vh = hdr_priv(hdr);
582 uint32_t sha1[5];
583 struct fio_sha1_ctx sha1_ctx = {
584 .H = sha1,
585 };
586
587 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
588
589 fio_sha1_init(&sha1_ctx);
590 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(vc->td, hdr));
591 fio_sha1_final(&sha1_ctx);
592
593 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
594 return 0;
595
596 vc->name = "sha1";
597 vc->good_crc = vh->sha1;
598 vc->bad_crc = sha1_ctx.H;
599 vc->crc_len = sizeof(vh->sha1);
600 log_verify_failure(hdr, vc);
601 return EILSEQ;
602}
603
604static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
605{
606 void *p = io_u_verify_off(hdr, vc);
607 struct vhdr_crc7 *vh = hdr_priv(hdr);
608 unsigned char c;
609
610 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
611
612 c = fio_crc7(p, hdr->len - hdr_size(vc->td, hdr));
613
614 if (c == vh->crc7)
615 return 0;
616
617 vc->name = "crc7";
618 vc->good_crc = &vh->crc7;
619 vc->bad_crc = &c;
620 vc->crc_len = 1;
621 log_verify_failure(hdr, vc);
622 return EILSEQ;
623}
624
625static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
626{
627 void *p = io_u_verify_off(hdr, vc);
628 struct vhdr_crc16 *vh = hdr_priv(hdr);
629 unsigned short c;
630
631 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
632
633 c = fio_crc16(p, hdr->len - hdr_size(vc->td, hdr));
634
635 if (c == vh->crc16)
636 return 0;
637
638 vc->name = "crc16";
639 vc->good_crc = &vh->crc16;
640 vc->bad_crc = &c;
641 vc->crc_len = 2;
642 log_verify_failure(hdr, vc);
643 return EILSEQ;
644}
645
646static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
647{
648 void *p = io_u_verify_off(hdr, vc);
649 struct vhdr_crc64 *vh = hdr_priv(hdr);
650 unsigned long long c;
651
652 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
653
654 c = fio_crc64(p, hdr->len - hdr_size(vc->td, hdr));
655
656 if (c == vh->crc64)
657 return 0;
658
659 vc->name = "crc64";
660 vc->good_crc = &vh->crc64;
661 vc->bad_crc = &c;
662 vc->crc_len = 8;
663 log_verify_failure(hdr, vc);
664 return EILSEQ;
665}
666
667static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
668{
669 void *p = io_u_verify_off(hdr, vc);
670 struct vhdr_crc32 *vh = hdr_priv(hdr);
671 uint32_t c;
672
673 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
674
675 c = fio_crc32(p, hdr->len - hdr_size(vc->td, hdr));
676
677 if (c == vh->crc32)
678 return 0;
679
680 vc->name = "crc32";
681 vc->good_crc = &vh->crc32;
682 vc->bad_crc = &c;
683 vc->crc_len = 4;
684 log_verify_failure(hdr, vc);
685 return EILSEQ;
686}
687
688static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
689{
690 void *p = io_u_verify_off(hdr, vc);
691 struct vhdr_crc32 *vh = hdr_priv(hdr);
692 uint32_t c;
693
694 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
695
696 c = fio_crc32c(p, hdr->len - hdr_size(vc->td, hdr));
697
698 if (c == vh->crc32)
699 return 0;
700
701 vc->name = "crc32c";
702 vc->good_crc = &vh->crc32;
703 vc->bad_crc = &c;
704 vc->crc_len = 4;
705 log_verify_failure(hdr, vc);
706 return EILSEQ;
707}
708
709static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
710{
711 void *p = io_u_verify_off(hdr, vc);
712 struct vhdr_md5 *vh = hdr_priv(hdr);
713 uint32_t hash[MD5_HASH_WORDS];
714 struct fio_md5_ctx md5_ctx = {
715 .hash = hash,
716 };
717
718 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
719
720 fio_md5_init(&md5_ctx);
721 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(vc->td, hdr));
722 fio_md5_final(&md5_ctx);
723
724 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
725 return 0;
726
727 vc->name = "md5";
728 vc->good_crc = vh->md5_digest;
729 vc->bad_crc = md5_ctx.hash;
730 vc->crc_len = sizeof(hash);
731 log_verify_failure(hdr, vc);
732 return EILSEQ;
733}
734
735/*
736 * Push IO verification to a separate thread
737 */
738int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
739{
740 struct io_u *io_u = *io_u_ptr;
741
742 pthread_mutex_lock(&td->io_u_lock);
743
744 if (io_u->file)
745 put_file_log(td, io_u->file);
746
747 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
748 td->cur_depth--;
749 io_u_clear(td, io_u, IO_U_F_IN_CUR_DEPTH);
750 }
751 flist_add_tail(&io_u->verify_list, &td->verify_list);
752 *io_u_ptr = NULL;
753
754 pthread_cond_signal(&td->verify_cond);
755 pthread_mutex_unlock(&td->io_u_lock);
756 return 0;
757}
758
759/*
760 * Thanks Rusty, for spending the time so I don't have to.
761 *
762 * http://rusty.ozlabs.org/?p=560
763 */
764static int mem_is_zero(const void *data, size_t length)
765{
766 const unsigned char *p = data;
767 size_t len;
768
769 /* Check first 16 bytes manually */
770 for (len = 0; len < 16; len++) {
771 if (!length)
772 return 1;
773 if (*p)
774 return 0;
775 p++;
776 length--;
777 }
778
779 /* Now we know that's zero, memcmp with self. */
780 return memcmp(data, p, length) == 0;
781}
782
783static int mem_is_zero_slow(const void *data, size_t length, size_t *offset)
784{
785 const unsigned char *p = data;
786
787 *offset = 0;
788 while (length) {
789 if (*p)
790 break;
791 (*offset)++;
792 length--;
793 p++;
794 }
795
796 return !length;
797}
798
799static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
800{
801 size_t offset;
802
803 if (!td->o.trim_zero)
804 return 0;
805
806 if (mem_is_zero(io_u->buf, io_u->buflen))
807 return 0;
808
809 mem_is_zero_slow(io_u->buf, io_u->buflen, &offset);
810
811 log_err("trim: verify failed at file %s offset %llu, length %llu"
812 ", block offset %lu\n",
813 io_u->file->file_name, io_u->verify_offset, io_u->buflen,
814 (unsigned long) offset);
815 return EILSEQ;
816}
817
818static int verify_header(struct io_u *io_u, struct thread_data *td,
819 struct verify_header *hdr, unsigned int hdr_num,
820 unsigned int hdr_len)
821{
822 void *p = hdr;
823 uint32_t crc;
824
825 if (hdr->magic != FIO_HDR_MAGIC) {
826 log_err("verify: bad magic header %x, wanted %x",
827 hdr->magic, FIO_HDR_MAGIC);
828 goto err;
829 }
830 if (hdr->len != hdr_len) {
831 log_err("verify: bad header length %u, wanted %u",
832 hdr->len, hdr_len);
833 goto err;
834 }
835 if (hdr->rand_seed != io_u->rand_seed) {
836 log_err("verify: bad header rand_seed %"PRIu64
837 ", wanted %"PRIu64,
838 hdr->rand_seed, io_u->rand_seed);
839 goto err;
840 }
841 if (hdr->offset != io_u->verify_offset + hdr_num * td->o.verify_interval) {
842 log_err("verify: bad header offset %"PRIu64
843 ", wanted %llu",
844 hdr->offset, io_u->verify_offset);
845 goto err;
846 }
847
848 /*
849 * For read-only workloads, the program cannot be certain of the
850 * last numberio written to a block. Checking of numberio will be
851 * done only for workloads that write data. For verify_only,
852 * numberio check is skipped.
853 */
854 if (td_write(td) && (td_min_bs(td) == td_max_bs(td)) &&
855 !td->o.time_based)
856 if (!td->o.verify_only)
857 if (hdr->numberio != io_u->numberio) {
858 log_err("verify: bad header numberio %"PRIu16
859 ", wanted %"PRIu16,
860 hdr->numberio, io_u->numberio);
861 goto err;
862 }
863
864 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
865 if (crc != hdr->crc32) {
866 log_err("verify: bad header crc %x, calculated %x",
867 hdr->crc32, crc);
868 goto err;
869 }
870 return 0;
871
872err:
873 log_err(" at file %s offset %llu, length %u"
874 " (requested block: offset=%llu, length=%llu)\n",
875 io_u->file->file_name,
876 io_u->verify_offset + hdr_num * hdr_len, hdr_len,
877 io_u->verify_offset, io_u->buflen);
878
879 if (td->o.verify_dump)
880 dump_buf(p, hdr_len, io_u->verify_offset + hdr_num * hdr_len,
881 "hdr_fail", io_u->file);
882
883 return EILSEQ;
884}
885
886int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
887{
888 struct verify_header *hdr;
889 struct io_u *io_u = *io_u_ptr;
890 unsigned int header_size, hdr_inc, hdr_num = 0;
891 void *p;
892 int ret;
893
894 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
895 return 0;
896 /*
897 * If the IO engine is faking IO (like null), then just pretend
898 * we verified everything.
899 */
900 if (td_ioengine_flagged(td, FIO_FAKEIO))
901 return 0;
902
903 if (io_u->flags & IO_U_F_TRIMMED) {
904 ret = verify_trimmed_io_u(td, io_u);
905 goto done;
906 }
907
908 hdr_inc = get_hdr_inc(td, io_u);
909
910 ret = 0;
911 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
912 p += hdr_inc, hdr_num++) {
913 struct vcont vc = {
914 .io_u = io_u,
915 .hdr_num = hdr_num,
916 .td = td,
917 };
918 unsigned int verify_type;
919
920 if (ret && td->o.verify_fatal)
921 break;
922
923 header_size = __hdr_size(td->o.verify);
924 if (td->o.verify_offset)
925 memswp(p, p + td->o.verify_offset, header_size);
926 hdr = p;
927
928 /*
929 * Make rand_seed check pass when have verify_backlog or
930 * zone reset frequency for zonemode=zbd.
931 */
932 if (!td_rw(td) || (td->flags & TD_F_VER_BACKLOG) ||
933 td->o.zrf.u.f)
934 io_u->rand_seed = hdr->rand_seed;
935
936 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
937 ret = verify_header(io_u, td, hdr, hdr_num, hdr_inc);
938 if (ret)
939 return ret;
940 }
941
942 if (td->o.verify != VERIFY_NONE)
943 verify_type = td->o.verify;
944 else
945 verify_type = hdr->verify_type;
946
947 switch (verify_type) {
948 case VERIFY_HDR_ONLY:
949 /* Header is always verified, check if pattern is left
950 * for verification. */
951 if (td->o.verify_pattern_bytes)
952 ret = verify_io_u_pattern(hdr, &vc);
953 break;
954 case VERIFY_MD5:
955 ret = verify_io_u_md5(hdr, &vc);
956 break;
957 case VERIFY_CRC64:
958 ret = verify_io_u_crc64(hdr, &vc);
959 break;
960 case VERIFY_CRC32C:
961 case VERIFY_CRC32C_INTEL:
962 ret = verify_io_u_crc32c(hdr, &vc);
963 break;
964 case VERIFY_CRC32:
965 ret = verify_io_u_crc32(hdr, &vc);
966 break;
967 case VERIFY_CRC16:
968 ret = verify_io_u_crc16(hdr, &vc);
969 break;
970 case VERIFY_CRC7:
971 ret = verify_io_u_crc7(hdr, &vc);
972 break;
973 case VERIFY_SHA256:
974 ret = verify_io_u_sha256(hdr, &vc);
975 break;
976 case VERIFY_SHA512:
977 ret = verify_io_u_sha512(hdr, &vc);
978 break;
979 case VERIFY_SHA3_224:
980 ret = verify_io_u_sha3_224(hdr, &vc);
981 break;
982 case VERIFY_SHA3_256:
983 ret = verify_io_u_sha3_256(hdr, &vc);
984 break;
985 case VERIFY_SHA3_384:
986 ret = verify_io_u_sha3_384(hdr, &vc);
987 break;
988 case VERIFY_SHA3_512:
989 ret = verify_io_u_sha3_512(hdr, &vc);
990 break;
991 case VERIFY_XXHASH:
992 ret = verify_io_u_xxhash(hdr, &vc);
993 break;
994 case VERIFY_SHA1:
995 ret = verify_io_u_sha1(hdr, &vc);
996 break;
997 case VERIFY_PATTERN:
998 case VERIFY_PATTERN_NO_HDR:
999 ret = verify_io_u_pattern(hdr, &vc);
1000 break;
1001 default:
1002 log_err("Bad verify type %u\n", hdr->verify_type);
1003 ret = EINVAL;
1004 }
1005
1006 if (ret && verify_type != hdr->verify_type)
1007 log_err("fio: verify type mismatch (%u media, %u given)\n",
1008 hdr->verify_type, verify_type);
1009 }
1010
1011done:
1012 if (ret && td->o.verify_fatal)
1013 fio_mark_td_terminate(td);
1014
1015 return ret;
1016}
1017
1018static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
1019{
1020 struct vhdr_xxhash *vh = hdr_priv(hdr);
1021 void *state;
1022
1023 state = XXH32_init(1);
1024 XXH32_update(state, p, len);
1025 vh->hash = XXH32_digest(state);
1026}
1027
1028static void fill_sha3(struct fio_sha3_ctx *sha3_ctx, void *p, unsigned int len)
1029{
1030 fio_sha3_update(sha3_ctx, p, len);
1031 fio_sha3_final(sha3_ctx);
1032}
1033
1034static void fill_sha3_224(struct verify_header *hdr, void *p, unsigned int len)
1035{
1036 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
1037 struct fio_sha3_ctx sha3_ctx = {
1038 .sha = vh->sha,
1039 };
1040
1041 fio_sha3_224_init(&sha3_ctx);
1042 fill_sha3(&sha3_ctx, p, len);
1043}
1044
1045static void fill_sha3_256(struct verify_header *hdr, void *p, unsigned int len)
1046{
1047 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
1048 struct fio_sha3_ctx sha3_ctx = {
1049 .sha = vh->sha,
1050 };
1051
1052 fio_sha3_256_init(&sha3_ctx);
1053 fill_sha3(&sha3_ctx, p, len);
1054}
1055
1056static void fill_sha3_384(struct verify_header *hdr, void *p, unsigned int len)
1057{
1058 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
1059 struct fio_sha3_ctx sha3_ctx = {
1060 .sha = vh->sha,
1061 };
1062
1063 fio_sha3_384_init(&sha3_ctx);
1064 fill_sha3(&sha3_ctx, p, len);
1065}
1066
1067static void fill_sha3_512(struct verify_header *hdr, void *p, unsigned int len)
1068{
1069 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
1070 struct fio_sha3_ctx sha3_ctx = {
1071 .sha = vh->sha,
1072 };
1073
1074 fio_sha3_512_init(&sha3_ctx);
1075 fill_sha3(&sha3_ctx, p, len);
1076}
1077
1078static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
1079{
1080 struct vhdr_sha512 *vh = hdr_priv(hdr);
1081 struct fio_sha512_ctx sha512_ctx = {
1082 .buf = vh->sha512,
1083 };
1084
1085 fio_sha512_init(&sha512_ctx);
1086 fio_sha512_update(&sha512_ctx, p, len);
1087}
1088
1089static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
1090{
1091 struct vhdr_sha256 *vh = hdr_priv(hdr);
1092 struct fio_sha256_ctx sha256_ctx = {
1093 .buf = vh->sha256,
1094 };
1095
1096 fio_sha256_init(&sha256_ctx);
1097 fio_sha256_update(&sha256_ctx, p, len);
1098 fio_sha256_final(&sha256_ctx);
1099}
1100
1101static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
1102{
1103 struct vhdr_sha1 *vh = hdr_priv(hdr);
1104 struct fio_sha1_ctx sha1_ctx = {
1105 .H = vh->sha1,
1106 };
1107
1108 fio_sha1_init(&sha1_ctx);
1109 fio_sha1_update(&sha1_ctx, p, len);
1110 fio_sha1_final(&sha1_ctx);
1111}
1112
1113static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
1114{
1115 struct vhdr_crc7 *vh = hdr_priv(hdr);
1116
1117 vh->crc7 = fio_crc7(p, len);
1118}
1119
1120static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
1121{
1122 struct vhdr_crc16 *vh = hdr_priv(hdr);
1123
1124 vh->crc16 = fio_crc16(p, len);
1125}
1126
1127static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
1128{
1129 struct vhdr_crc32 *vh = hdr_priv(hdr);
1130
1131 vh->crc32 = fio_crc32(p, len);
1132}
1133
1134static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
1135{
1136 struct vhdr_crc32 *vh = hdr_priv(hdr);
1137
1138 vh->crc32 = fio_crc32c(p, len);
1139}
1140
1141static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
1142{
1143 struct vhdr_crc64 *vh = hdr_priv(hdr);
1144
1145 vh->crc64 = fio_crc64(p, len);
1146}
1147
1148static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
1149{
1150 struct vhdr_md5 *vh = hdr_priv(hdr);
1151 struct fio_md5_ctx md5_ctx = {
1152 .hash = (uint32_t *) vh->md5_digest,
1153 };
1154
1155 fio_md5_init(&md5_ctx);
1156 fio_md5_update(&md5_ctx, p, len);
1157 fio_md5_final(&md5_ctx);
1158}
1159
1160static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
1161 struct verify_header *hdr, unsigned int header_num,
1162 unsigned int header_len, uint64_t rand_seed)
1163{
1164 void *p = hdr;
1165
1166 hdr->magic = FIO_HDR_MAGIC;
1167 hdr->verify_type = td->o.verify;
1168 hdr->len = header_len;
1169 hdr->rand_seed = rand_seed;
1170 hdr->offset = io_u->verify_offset + header_num * td->o.verify_interval;
1171 hdr->time_sec = io_u->start_time.tv_sec;
1172 hdr->time_nsec = io_u->start_time.tv_nsec;
1173 hdr->thread = td->thread_number;
1174 hdr->numberio = io_u->numberio;
1175 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
1176}
1177
1178
1179static void fill_hdr(struct thread_data *td, struct io_u *io_u,
1180 struct verify_header *hdr, unsigned int header_num,
1181 unsigned int header_len, uint64_t rand_seed)
1182{
1183 if (td->o.verify != VERIFY_PATTERN_NO_HDR)
1184 __fill_hdr(td, io_u, hdr, header_num, header_len, rand_seed);
1185}
1186
1187static void populate_hdr(struct thread_data *td, struct io_u *io_u,
1188 struct verify_header *hdr, unsigned int header_num,
1189 unsigned int header_len)
1190{
1191 unsigned int data_len;
1192 void *data;
1193 char *p;
1194
1195 p = (char *) hdr;
1196
1197 fill_hdr(td, io_u, hdr, header_num, header_len, io_u->rand_seed);
1198
1199 if (header_len <= hdr_size(td, hdr)) {
1200 td_verror(td, EINVAL, "Blocksize too small");
1201 return;
1202 }
1203 data_len = header_len - hdr_size(td, hdr);
1204
1205 data = p + hdr_size(td, hdr);
1206 switch (td->o.verify) {
1207 case VERIFY_MD5:
1208 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
1209 io_u, hdr->len);
1210 fill_md5(hdr, data, data_len);
1211 break;
1212 case VERIFY_CRC64:
1213 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
1214 io_u, hdr->len);
1215 fill_crc64(hdr, data, data_len);
1216 break;
1217 case VERIFY_CRC32C:
1218 case VERIFY_CRC32C_INTEL:
1219 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1220 io_u, hdr->len);
1221 fill_crc32c(hdr, data, data_len);
1222 break;
1223 case VERIFY_CRC32:
1224 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1225 io_u, hdr->len);
1226 fill_crc32(hdr, data, data_len);
1227 break;
1228 case VERIFY_CRC16:
1229 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1230 io_u, hdr->len);
1231 fill_crc16(hdr, data, data_len);
1232 break;
1233 case VERIFY_CRC7:
1234 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1235 io_u, hdr->len);
1236 fill_crc7(hdr, data, data_len);
1237 break;
1238 case VERIFY_SHA256:
1239 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1240 io_u, hdr->len);
1241 fill_sha256(hdr, data, data_len);
1242 break;
1243 case VERIFY_SHA512:
1244 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1245 io_u, hdr->len);
1246 fill_sha512(hdr, data, data_len);
1247 break;
1248 case VERIFY_SHA3_224:
1249 dprint(FD_VERIFY, "fill sha3-224 io_u %p, len %u\n",
1250 io_u, hdr->len);
1251 fill_sha3_224(hdr, data, data_len);
1252 break;
1253 case VERIFY_SHA3_256:
1254 dprint(FD_VERIFY, "fill sha3-256 io_u %p, len %u\n",
1255 io_u, hdr->len);
1256 fill_sha3_256(hdr, data, data_len);
1257 break;
1258 case VERIFY_SHA3_384:
1259 dprint(FD_VERIFY, "fill sha3-384 io_u %p, len %u\n",
1260 io_u, hdr->len);
1261 fill_sha3_384(hdr, data, data_len);
1262 break;
1263 case VERIFY_SHA3_512:
1264 dprint(FD_VERIFY, "fill sha3-512 io_u %p, len %u\n",
1265 io_u, hdr->len);
1266 fill_sha3_512(hdr, data, data_len);
1267 break;
1268 case VERIFY_XXHASH:
1269 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1270 io_u, hdr->len);
1271 fill_xxhash(hdr, data, data_len);
1272 break;
1273 case VERIFY_SHA1:
1274 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1275 io_u, hdr->len);
1276 fill_sha1(hdr, data, data_len);
1277 break;
1278 case VERIFY_HDR_ONLY:
1279 case VERIFY_PATTERN:
1280 case VERIFY_PATTERN_NO_HDR:
1281 /* nothing to do here */
1282 break;
1283 default:
1284 log_err("fio: bad verify type: %d\n", td->o.verify);
1285 assert(0);
1286 }
1287
1288 if (td->o.verify_offset && hdr_size(td, hdr))
1289 memswp(p, p + td->o.verify_offset, hdr_size(td, hdr));
1290}
1291
1292/*
1293 * fill body of io_u->buf with random data and add a header with the
1294 * checksum of choice
1295 */
1296void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1297{
1298 if (td->o.verify == VERIFY_NULL)
1299 return;
1300
1301 fill_pattern_headers(td, io_u, 0, 0);
1302}
1303
1304int get_next_verify(struct thread_data *td, struct io_u *io_u)
1305{
1306 struct io_piece *ipo = NULL;
1307
1308 /*
1309 * this io_u is from a requeue, we already filled the offsets
1310 */
1311 if (io_u->file)
1312 return 0;
1313
1314 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1315 struct fio_rb_node *n = rb_first(&td->io_hist_tree);
1316
1317 ipo = rb_entry(n, struct io_piece, rb_node);
1318
1319 /*
1320 * Ensure that the associated IO has completed
1321 */
1322 if (atomic_load_acquire(&ipo->flags) & IP_F_IN_FLIGHT)
1323 goto nothing;
1324
1325 rb_erase(n, &td->io_hist_tree);
1326 assert(ipo->flags & IP_F_ONRB);
1327 ipo->flags &= ~IP_F_ONRB;
1328 } else if (!flist_empty(&td->io_hist_list)) {
1329 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1330
1331 /*
1332 * Ensure that the associated IO has completed
1333 */
1334 if (atomic_load_acquire(&ipo->flags) & IP_F_IN_FLIGHT)
1335 goto nothing;
1336
1337 flist_del(&ipo->list);
1338 assert(ipo->flags & IP_F_ONLIST);
1339 ipo->flags &= ~IP_F_ONLIST;
1340 }
1341
1342 if (ipo) {
1343 td->io_hist_len--;
1344
1345 io_u->offset = ipo->offset;
1346 io_u->verify_offset = ipo->offset;
1347 io_u->buflen = ipo->len;
1348 io_u->numberio = ipo->numberio;
1349 io_u->file = ipo->file;
1350 io_u_set(td, io_u, IO_U_F_VER_LIST);
1351
1352 if (ipo->flags & IP_F_TRIMMED)
1353 io_u_set(td, io_u, IO_U_F_TRIMMED);
1354
1355 if (!fio_file_open(io_u->file)) {
1356 int r = td_io_open_file(td, io_u->file);
1357
1358 if (r) {
1359 dprint(FD_VERIFY, "failed file %s open\n",
1360 io_u->file->file_name);
1361 return 1;
1362 }
1363 }
1364
1365 get_file(ipo->file);
1366 assert(fio_file_open(io_u->file));
1367 io_u->ddir = DDIR_READ;
1368 io_u->xfer_buf = io_u->buf;
1369 io_u->xfer_buflen = io_u->buflen;
1370
1371 remove_trim_entry(td, ipo);
1372 free(ipo);
1373 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1374
1375 if (!td->o.verify_pattern_bytes) {
1376 io_u->rand_seed = __rand(&td->verify_state);
1377 if (sizeof(int) != sizeof(long *))
1378 io_u->rand_seed *= __rand(&td->verify_state);
1379 }
1380 return 0;
1381 }
1382
1383nothing:
1384 dprint(FD_VERIFY, "get_next_verify: empty\n");
1385 return 1;
1386}
1387
1388void fio_verify_init(struct thread_data *td)
1389{
1390 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1391 td->o.verify == VERIFY_CRC32C) {
1392 crc32c_arm64_probe();
1393 crc32c_intel_probe();
1394 }
1395}
1396
1397static void *verify_async_thread(void *data)
1398{
1399 struct thread_data *td = data;
1400 struct io_u *io_u;
1401 int ret = 0;
1402
1403 if (fio_option_is_set(&td->o, verify_cpumask) &&
1404 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1405 log_err("fio: failed setting verify thread affinity\n");
1406 goto done;
1407 }
1408
1409 do {
1410 FLIST_HEAD(list);
1411
1412 read_barrier();
1413 if (td->verify_thread_exit)
1414 break;
1415
1416 pthread_mutex_lock(&td->io_u_lock);
1417
1418 while (flist_empty(&td->verify_list) &&
1419 !td->verify_thread_exit) {
1420 ret = pthread_cond_wait(&td->verify_cond,
1421 &td->io_u_lock);
1422 if (ret) {
1423 break;
1424 }
1425 }
1426
1427 flist_splice_init(&td->verify_list, &list);
1428 pthread_mutex_unlock(&td->io_u_lock);
1429
1430 if (flist_empty(&list))
1431 continue;
1432
1433 while (!flist_empty(&list)) {
1434 io_u = flist_first_entry(&list, struct io_u, verify_list);
1435 flist_del_init(&io_u->verify_list);
1436
1437 io_u_set(td, io_u, IO_U_F_NO_FILE_PUT);
1438 ret = verify_io_u(td, &io_u);
1439
1440 put_io_u(td, io_u);
1441 if (!ret)
1442 continue;
1443 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1444 update_error_count(td, ret);
1445 td_clear_error(td);
1446 ret = 0;
1447 }
1448 }
1449 } while (!ret);
1450
1451 if (ret) {
1452 td_verror(td, ret, "async_verify");
1453 if (td->o.verify_fatal)
1454 fio_mark_td_terminate(td);
1455 }
1456
1457done:
1458 pthread_mutex_lock(&td->io_u_lock);
1459 td->nr_verify_threads--;
1460 pthread_cond_signal(&td->free_cond);
1461 pthread_mutex_unlock(&td->io_u_lock);
1462
1463 return NULL;
1464}
1465
1466int verify_async_init(struct thread_data *td)
1467{
1468 int i, ret;
1469 pthread_attr_t attr;
1470
1471 pthread_attr_init(&attr);
1472 pthread_attr_setstacksize(&attr, 2 * PTHREAD_STACK_MIN);
1473
1474 td->verify_thread_exit = 0;
1475
1476 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1477 for (i = 0; i < td->o.verify_async; i++) {
1478 ret = pthread_create(&td->verify_threads[i], &attr,
1479 verify_async_thread, td);
1480 if (ret) {
1481 log_err("fio: async verify creation failed: %s\n",
1482 strerror(ret));
1483 break;
1484 }
1485 ret = pthread_detach(td->verify_threads[i]);
1486 if (ret) {
1487 log_err("fio: async verify thread detach failed: %s\n",
1488 strerror(ret));
1489 break;
1490 }
1491 td->nr_verify_threads++;
1492 }
1493
1494 pthread_attr_destroy(&attr);
1495
1496 if (i != td->o.verify_async) {
1497 log_err("fio: only %d verify threads started, exiting\n", i);
1498
1499 pthread_mutex_lock(&td->io_u_lock);
1500 td->verify_thread_exit = 1;
1501 pthread_cond_broadcast(&td->verify_cond);
1502 pthread_mutex_unlock(&td->io_u_lock);
1503
1504 return 1;
1505 }
1506
1507 return 0;
1508}
1509
1510void verify_async_exit(struct thread_data *td)
1511{
1512 pthread_mutex_lock(&td->io_u_lock);
1513 td->verify_thread_exit = 1;
1514 pthread_cond_broadcast(&td->verify_cond);
1515
1516 while (td->nr_verify_threads)
1517 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1518
1519 pthread_mutex_unlock(&td->io_u_lock);
1520 free(td->verify_threads);
1521 td->verify_threads = NULL;
1522}
1523
1524int paste_blockoff(char *buf, unsigned int len, void *priv)
1525{
1526 struct io_u *io = priv;
1527 unsigned long long off;
1528
1529 typecheck(__typeof__(off), io->offset);
1530 off = cpu_to_le64((uint64_t)io->offset);
1531 len = min(len, (unsigned int)sizeof(off));
1532 memcpy(buf, &off, len);
1533 return 0;
1534}
1535
1536static int __fill_file_completions(struct thread_data *td,
1537 struct thread_io_list *s,
1538 struct fio_file *f, unsigned int *index)
1539{
1540 unsigned int comps;
1541 int i, j;
1542
1543 if (!f->last_write_comp)
1544 return 0;
1545
1546 if (td->io_blocks[DDIR_WRITE] < td->o.iodepth)
1547 comps = td->io_blocks[DDIR_WRITE];
1548 else
1549 comps = td->o.iodepth;
1550
1551 j = f->last_write_idx - 1;
1552 for (i = 0; i < comps; i++) {
1553 if (j == -1)
1554 j = td->o.iodepth - 1;
1555 s->comps[*index].fileno = __cpu_to_le64(f->fileno);
1556 s->comps[*index].offset = cpu_to_le64(f->last_write_comp[j]);
1557 (*index)++;
1558 j--;
1559 }
1560
1561 return comps;
1562}
1563
1564static int fill_file_completions(struct thread_data *td,
1565 struct thread_io_list *s, unsigned int *index)
1566{
1567 struct fio_file *f;
1568 unsigned int i;
1569 int comps = 0;
1570
1571 for_each_file(td, f, i)
1572 comps += __fill_file_completions(td, s, f, index);
1573
1574 return comps;
1575}
1576
1577struct all_io_list *get_all_io_list(int save_mask, size_t *sz)
1578{
1579 struct all_io_list *rep;
1580 size_t depth;
1581 void *next;
1582 int nr;
1583
1584 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1585
1586 /*
1587 * Calculate reply space needed. We need one 'io_state' per thread,
1588 * and the size will vary depending on depth.
1589 */
1590 depth = 0;
1591 nr = 0;
1592 for_each_td(td) {
1593 if (save_mask != IO_LIST_ALL && (__td_index + 1) != save_mask)
1594 continue;
1595 td->stop_io = 1;
1596 td->flags |= TD_F_VSTATE_SAVED;
1597 depth += (td->o.iodepth * td->o.nr_files);
1598 nr++;
1599 } end_for_each();
1600
1601 if (!nr)
1602 return NULL;
1603
1604 *sz = sizeof(*rep);
1605 *sz += nr * sizeof(struct thread_io_list);
1606 *sz += depth * sizeof(struct file_comp);
1607 rep = calloc(1, *sz);
1608
1609 rep->threads = cpu_to_le64((uint64_t) nr);
1610
1611 next = &rep->state[0];
1612 for_each_td(td) {
1613 struct thread_io_list *s = next;
1614 unsigned int comps, index = 0;
1615
1616 if (save_mask != IO_LIST_ALL && (__td_index + 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_le32((uint32_t) td->o.iodepth);
1623 s->nofiles = cpu_to_le32((uint32_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) __td_index);
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 } end_for_each();
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#ifdef _WIN32
1661 flags |= O_BINARY;
1662#endif
1663
1664 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1665
1666 fd = open(out, flags, 0644);
1667 if (fd == -1) {
1668 perror("fio: open state file");
1669 log_err("fio: state file: %s (for_write=%d)\n", out, for_write);
1670 return -1;
1671 }
1672
1673 return fd;
1674}
1675
1676static int write_thread_list_state(struct thread_io_list *s,
1677 const char *prefix)
1678{
1679 struct verify_state_hdr hdr;
1680 uint64_t crc;
1681 ssize_t ret;
1682 int fd;
1683
1684 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1685 if (fd == -1)
1686 return 1;
1687
1688 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1689
1690 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1691 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1692 hdr.crc = cpu_to_le64(crc);
1693 ret = write(fd, &hdr, sizeof(hdr));
1694 if (ret != sizeof(hdr))
1695 goto write_fail;
1696
1697 ret = write(fd, s, thread_io_list_sz(s));
1698 if (ret != thread_io_list_sz(s)) {
1699write_fail:
1700 if (ret < 0)
1701 perror("fio: write state file");
1702 log_err("fio: failed to write state file\n");
1703 ret = 1;
1704 } else
1705 ret = 0;
1706
1707 close(fd);
1708 return ret;
1709}
1710
1711void __verify_save_state(struct all_io_list *state, const char *prefix)
1712{
1713 struct thread_io_list *s = &state->state[0];
1714 unsigned int i;
1715
1716 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1717 write_thread_list_state(s, prefix);
1718 s = io_list_next(s);
1719 }
1720}
1721
1722void verify_save_state(int mask)
1723{
1724 struct all_io_list *state;
1725 size_t sz;
1726
1727 state = get_all_io_list(mask, &sz);
1728 if (state) {
1729 char prefix[PATH_MAX];
1730
1731 if (aux_path)
1732 sprintf(prefix, "%s%clocal", aux_path, FIO_OS_PATH_SEPARATOR);
1733 else
1734 strcpy(prefix, "local");
1735
1736 __verify_save_state(state, prefix);
1737 free(state);
1738 }
1739}
1740
1741void verify_free_state(struct thread_data *td)
1742{
1743 if (td->vstate)
1744 free(td->vstate);
1745}
1746
1747void verify_assign_state(struct thread_data *td, void *p)
1748{
1749 struct thread_io_list *s = p;
1750 int i;
1751
1752 s->no_comps = le64_to_cpu(s->no_comps);
1753 s->depth = le32_to_cpu(s->depth);
1754 s->nofiles = le32_to_cpu(s->nofiles);
1755 s->numberio = le64_to_cpu(s->numberio);
1756 s->rand.use64 = le64_to_cpu(s->rand.use64);
1757
1758 if (s->rand.use64) {
1759 for (i = 0; i < 6; i++)
1760 s->rand.state64.s[i] = le64_to_cpu(s->rand.state64.s[i]);
1761 } else {
1762 for (i = 0; i < 4; i++)
1763 s->rand.state32.s[i] = le32_to_cpu(s->rand.state32.s[i]);
1764 }
1765
1766 for (i = 0; i < s->no_comps; i++) {
1767 s->comps[i].fileno = le64_to_cpu(s->comps[i].fileno);
1768 s->comps[i].offset = le64_to_cpu(s->comps[i].offset);
1769 }
1770
1771 td->vstate = p;
1772}
1773
1774int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s)
1775{
1776 uint64_t crc;
1777
1778 hdr->version = le64_to_cpu(hdr->version);
1779 hdr->size = le64_to_cpu(hdr->size);
1780 hdr->crc = le64_to_cpu(hdr->crc);
1781
1782 if (hdr->version != VSTATE_HDR_VERSION)
1783 return 1;
1784
1785 crc = fio_crc32c((void *)s, hdr->size);
1786 if (crc != hdr->crc)
1787 return 1;
1788
1789 return 0;
1790}
1791
1792int verify_load_state(struct thread_data *td, const char *prefix)
1793{
1794 struct verify_state_hdr hdr;
1795 void *s = NULL;
1796 uint64_t crc;
1797 ssize_t ret;
1798 int fd;
1799
1800 if (!td->o.verify_state)
1801 return 0;
1802
1803 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1804 if (fd == -1)
1805 return 1;
1806
1807 ret = read(fd, &hdr, sizeof(hdr));
1808 if (ret != sizeof(hdr)) {
1809 if (ret < 0)
1810 td_verror(td, errno, "read verify state hdr");
1811 log_err("fio: failed reading verify state header\n");
1812 goto err;
1813 }
1814
1815 hdr.version = le64_to_cpu(hdr.version);
1816 hdr.size = le64_to_cpu(hdr.size);
1817 hdr.crc = le64_to_cpu(hdr.crc);
1818
1819 if (hdr.version != VSTATE_HDR_VERSION) {
1820 log_err("fio: unsupported (%d) version in verify state header\n",
1821 (unsigned int) hdr.version);
1822 goto err;
1823 }
1824
1825 s = malloc(hdr.size);
1826 ret = read(fd, s, hdr.size);
1827 if (ret != hdr.size) {
1828 if (ret < 0)
1829 td_verror(td, errno, "read verify state");
1830 log_err("fio: failed reading verity state\n");
1831 goto err;
1832 }
1833
1834 crc = fio_crc32c(s, hdr.size);
1835 if (crc != hdr.crc) {
1836 log_err("fio: verify state is corrupt\n");
1837 goto err;
1838 }
1839
1840 close(fd);
1841
1842 verify_assign_state(td, s);
1843 return 0;
1844err:
1845 if (s)
1846 free(s);
1847 close(fd);
1848 return 1;
1849}
1850
1851/*
1852 * Use the loaded verify state to know when to stop doing verification
1853 */
1854int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1855{
1856 struct thread_io_list *s = td->vstate;
1857 struct fio_file *f = io_u->file;
1858 int i;
1859
1860 if (!s || !f)
1861 return 0;
1862
1863 /*
1864 * If we're not into the window of issues - depth yet, continue. If
1865 * issue is shorter than depth, do check.
1866 */
1867 if ((td->io_blocks[DDIR_READ] < s->depth ||
1868 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1869 s->numberio > s->depth)
1870 return 0;
1871
1872 /*
1873 * We're in the window of having to check if this io was
1874 * completed or not. If the IO was seen as completed, then
1875 * lets verify it.
1876 */
1877 for (i = 0; i < s->no_comps; i++) {
1878 if (s->comps[i].fileno != f->fileno)
1879 continue;
1880 if (io_u->verify_offset == s->comps[i].offset)
1881 return 0;
1882 }
1883
1884 /*
1885 * Not found, we have to stop
1886 */
1887 return 1;
1888}
fio - Flexible IO Tester