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verify: add raw pattern verify
[fio.git] / verify.c
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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
17#include "crc/md5.h"
18#include "crc/crc64.h"
19#include "crc/crc32.h"
20#include "crc/crc32c.h"
21#include "crc/crc16.h"
22#include "crc/crc7.h"
23#include "crc/sha256.h"
24#include "crc/sha512.h"
25#include "crc/sha1.h"
26#include "crc/xxhash.h"
27
28static void populate_hdr(struct thread_data *td, struct io_u *io_u,
29 struct verify_header *hdr, unsigned int header_num,
30 unsigned int header_len);
31
32void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
33{
34 fill_pattern(p, len, td->o.buffer_pattern, td->o.buffer_pattern_bytes);
35}
36
37void __fill_buffer(struct thread_options *o, unsigned long seed, void *p,
38 unsigned int len)
39{
40 __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
41}
42
43unsigned long fill_buffer(struct thread_data *td, void *p, unsigned int len)
44{
45 struct frand_state *fs = &td->verify_state;
46 struct thread_options *o = &td->o;
47
48 return fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
49}
50
51void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
52 struct io_u *io_u, unsigned long seed, int use_seed)
53{
54 struct thread_options *o = &td->o;
55
56 if (!o->verify_pattern_bytes) {
57 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
58
59 if (use_seed)
60 __fill_buffer(o, seed, p, len);
61 else
62 io_u->rand_seed = fill_buffer(td, p, len);
63 return;
64 }
65
66 if (io_u->buf_filled_len >= len) {
67 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
68 o->verify_pattern_bytes, len);
69 return;
70 }
71
72 fill_pattern(p, len, o->verify_pattern, o->verify_pattern_bytes);
73 io_u->buf_filled_len = len;
74}
75
76static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
77{
78 unsigned int hdr_inc;
79
80 hdr_inc = io_u->buflen;
81 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
82 hdr_inc = td->o.verify_interval;
83
84 return hdr_inc;
85}
86
87static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
88 unsigned long seed, int use_seed)
89{
90 unsigned int hdr_inc, header_num;
91 struct verify_header *hdr;
92 void *p = io_u->buf;
93
94 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
95
96 hdr_inc = get_hdr_inc(td, io_u);
97 header_num = 0;
98 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
99 hdr = p;
100 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
101 header_num++;
102 }
103}
104
105static void memswp(void *buf1, void *buf2, unsigned int len)
106{
107 char swap[200];
108
109 assert(len <= sizeof(swap));
110
111 memcpy(&swap, buf1, len);
112 memcpy(buf1, buf2, len);
113 memcpy(buf2, &swap, len);
114}
115
116static void hexdump(void *buffer, int len)
117{
118 unsigned char *p = buffer;
119 int i;
120
121 for (i = 0; i < len; i++)
122 log_err("%02x", p[i]);
123 log_err("\n");
124}
125
126/*
127 * Prepare for separation of verify_header and checksum header
128 */
129static inline unsigned int __hdr_size(int verify_type)
130{
131 unsigned int len = 0;
132
133 switch (verify_type) {
134 case VERIFY_NONE:
135 case VERIFY_NULL:
136 len = 0;
137 break;
138 case VERIFY_MD5:
139 len = sizeof(struct vhdr_md5);
140 break;
141 case VERIFY_CRC64:
142 len = sizeof(struct vhdr_crc64);
143 break;
144 case VERIFY_CRC32C:
145 case VERIFY_CRC32:
146 case VERIFY_CRC32C_INTEL:
147 len = sizeof(struct vhdr_crc32);
148 break;
149 case VERIFY_CRC16:
150 len = sizeof(struct vhdr_crc16);
151 break;
152 case VERIFY_CRC7:
153 len = sizeof(struct vhdr_crc7);
154 break;
155 case VERIFY_SHA256:
156 len = sizeof(struct vhdr_sha256);
157 break;
158 case VERIFY_SHA512:
159 len = sizeof(struct vhdr_sha512);
160 break;
161 case VERIFY_XXHASH:
162 len = sizeof(struct vhdr_xxhash);
163 break;
164 case VERIFY_META:
165 len = sizeof(struct vhdr_meta);
166 break;
167 case VERIFY_SHA1:
168 len = sizeof(struct vhdr_sha1);
169 break;
170 case VERIFY_PATTERN:
171 case VERIFY_PATTERN_NO_HDR:
172 len = 0;
173 break;
174 default:
175 log_err("fio: unknown verify header!\n");
176 assert(0);
177 }
178
179 return len + sizeof(struct verify_header);
180}
181
182static inline unsigned int hdr_size(struct verify_header *hdr)
183{
184 return __hdr_size(hdr->verify_type);
185}
186
187static void *hdr_priv(struct verify_header *hdr)
188{
189 void *priv = hdr;
190
191 return priv + sizeof(struct verify_header);
192}
193
194/*
195 * Verify container, pass info to verify handlers and allow them to
196 * pass info back in case of error
197 */
198struct vcont {
199 /*
200 * Input
201 */
202 struct io_u *io_u;
203 unsigned int hdr_num;
204 struct thread_data *td;
205
206 /*
207 * Output, only valid in case of error
208 */
209 const char *name;
210 void *good_crc;
211 void *bad_crc;
212 unsigned int crc_len;
213};
214
215#define DUMP_BUF_SZ 255
216static int dump_buf_warned;
217
218static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
219 const char *type, struct fio_file *f)
220{
221 char *ptr, fname[DUMP_BUF_SZ];
222 size_t buf_left = DUMP_BUF_SZ;
223 int ret, fd;
224
225 ptr = strdup(f->file_name);
226
227 fname[DUMP_BUF_SZ - 1] = '\0';
228 strncpy(fname, basename(ptr), DUMP_BUF_SZ - 1);
229
230 buf_left -= strlen(fname);
231 if (buf_left <= 0) {
232 if (!dump_buf_warned) {
233 log_err("fio: verify failure dump buffer too small\n");
234 dump_buf_warned = 1;
235 }
236 free(ptr);
237 return;
238 }
239
240 snprintf(fname + strlen(fname), buf_left, ".%llu.%s", offset, type);
241
242 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
243 if (fd < 0) {
244 perror("open verify buf file");
245 return;
246 }
247
248 while (len) {
249 ret = write(fd, buf, len);
250 if (!ret)
251 break;
252 else if (ret < 0) {
253 perror("write verify buf file");
254 break;
255 }
256 len -= ret;
257 buf += ret;
258 }
259
260 close(fd);
261 log_err(" %s data dumped as %s\n", type, fname);
262 free(ptr);
263}
264
265/*
266 * Dump the contents of the read block and re-generate the correct data
267 * and dump that too.
268 */
269static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
270{
271 struct thread_data *td = vc->td;
272 struct io_u *io_u = vc->io_u;
273 unsigned long hdr_offset;
274 struct io_u dummy;
275 void *buf;
276
277 if (!td->o.verify_dump)
278 return;
279
280 /*
281 * Dump the contents we just read off disk
282 */
283 hdr_offset = vc->hdr_num * hdr->len;
284
285 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
286 "received", vc->io_u->file);
287
288 /*
289 * Allocate a new buf and re-generate the original data
290 */
291 buf = malloc(io_u->buflen);
292 dummy = *io_u;
293 dummy.buf = buf;
294 dummy.rand_seed = hdr->rand_seed;
295 dummy.buf_filled_len = 0;
296 dummy.buflen = io_u->buflen;
297
298 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
299
300 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
301 "expected", vc->io_u->file);
302 free(buf);
303}
304
305static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
306{
307 unsigned long long offset;
308
309 offset = vc->io_u->offset;
310 offset += vc->hdr_num * hdr->len;
311 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
312 vc->name, vc->io_u->file->file_name, offset, hdr->len);
313
314 if (vc->good_crc && vc->bad_crc) {
315 log_err(" Expected CRC: ");
316 hexdump(vc->good_crc, vc->crc_len);
317 log_err(" Received CRC: ");
318 hexdump(vc->bad_crc, vc->crc_len);
319 }
320
321 dump_verify_buffers(hdr, vc);
322}
323
324/*
325 * Return data area 'header_num'
326 */
327static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
328{
329 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
330}
331
332static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
333{
334 struct thread_data *td = vc->td;
335 struct io_u *io_u = vc->io_u;
336 char *buf, *pattern;
337 unsigned int header_size = __hdr_size(td->o.verify);
338 unsigned int len, mod, i, size, pattern_size;
339
340 pattern = td->o.verify_pattern;
341 pattern_size = td->o.verify_pattern_bytes;
342 if (pattern_size <= 1)
343 pattern_size = MAX_PATTERN_SIZE;
344 buf = (void *) hdr + header_size;
345 len = get_hdr_inc(td, io_u) - header_size;
346 mod = header_size % pattern_size;
347
348 for (i = 0; i < len; i += size) {
349 size = pattern_size - mod;
350 if (size > (len - i))
351 size = len - i;
352 if (memcmp(buf + i, pattern + mod, size))
353 /* Let the slow compare find the first mismatch byte. */
354 break;
355 mod = 0;
356 }
357
358 for (; i < len; i++) {
359 if (buf[i] != pattern[mod]) {
360 unsigned int bits;
361
362 bits = hweight8(buf[i] ^ pattern[mod]);
363 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
364 buf[i], pattern[mod], bits);
365 log_err("fio: bad pattern block offset %u\n", i);
366 dump_verify_buffers(hdr, vc);
367 return EILSEQ;
368 }
369 mod++;
370 if (mod == td->o.verify_pattern_bytes)
371 mod = 0;
372 }
373
374 return 0;
375}
376
377static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
378{
379 struct thread_data *td = vc->td;
380 struct vhdr_meta *vh = hdr_priv(hdr);
381 struct io_u *io_u = vc->io_u;
382 int ret = EILSEQ;
383
384 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
385
386 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
387 ret = 0;
388
389 if (td->o.verify_pattern_bytes)
390 ret |= verify_io_u_pattern(hdr, vc);
391
392 /*
393 * For read-only workloads, the program cannot be certain of the
394 * last numberio written to a block. Checking of numberio will be
395 * done only for workloads that write data. For verify_only,
396 * numberio will be checked in the last iteration when the correct
397 * state of numberio, that would have been written to each block
398 * in a previous run of fio, has been reached.
399 */
400 if ((td_write(td) || td_rw(td)) && (td_min_bs(td) == td_max_bs(td)) &&
401 !td->o.time_based)
402 if (!td->o.verify_only || td->o.loops == 0)
403 if (vh->numberio != io_u->numberio)
404 ret = EILSEQ;
405
406 if (!ret)
407 return 0;
408
409 vc->name = "meta";
410 log_verify_failure(hdr, vc);
411 return ret;
412}
413
414static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
415{
416 void *p = io_u_verify_off(hdr, vc);
417 struct vhdr_xxhash *vh = hdr_priv(hdr);
418 uint32_t hash;
419 void *state;
420
421 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
422
423 state = XXH32_init(1);
424 XXH32_update(state, p, hdr->len - hdr_size(hdr));
425 hash = XXH32_digest(state);
426
427 if (vh->hash == hash)
428 return 0;
429
430 vc->name = "xxhash";
431 vc->good_crc = &vh->hash;
432 vc->bad_crc = &hash;
433 vc->crc_len = sizeof(hash);
434 log_verify_failure(hdr, vc);
435 return EILSEQ;
436}
437
438static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
439{
440 void *p = io_u_verify_off(hdr, vc);
441 struct vhdr_sha512 *vh = hdr_priv(hdr);
442 uint8_t sha512[128];
443 struct fio_sha512_ctx sha512_ctx = {
444 .buf = sha512,
445 };
446
447 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
448
449 fio_sha512_init(&sha512_ctx);
450 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
451
452 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
453 return 0;
454
455 vc->name = "sha512";
456 vc->good_crc = vh->sha512;
457 vc->bad_crc = sha512_ctx.buf;
458 vc->crc_len = sizeof(vh->sha512);
459 log_verify_failure(hdr, vc);
460 return EILSEQ;
461}
462
463static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
464{
465 void *p = io_u_verify_off(hdr, vc);
466 struct vhdr_sha256 *vh = hdr_priv(hdr);
467 uint8_t sha256[64];
468 struct fio_sha256_ctx sha256_ctx = {
469 .buf = sha256,
470 };
471
472 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
473
474 fio_sha256_init(&sha256_ctx);
475 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
476 fio_sha256_final(&sha256_ctx);
477
478 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
479 return 0;
480
481 vc->name = "sha256";
482 vc->good_crc = vh->sha256;
483 vc->bad_crc = sha256_ctx.buf;
484 vc->crc_len = sizeof(vh->sha256);
485 log_verify_failure(hdr, vc);
486 return EILSEQ;
487}
488
489static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
490{
491 void *p = io_u_verify_off(hdr, vc);
492 struct vhdr_sha1 *vh = hdr_priv(hdr);
493 uint32_t sha1[5];
494 struct fio_sha1_ctx sha1_ctx = {
495 .H = sha1,
496 };
497
498 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
499
500 fio_sha1_init(&sha1_ctx);
501 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
502 fio_sha1_final(&sha1_ctx);
503
504 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
505 return 0;
506
507 vc->name = "sha1";
508 vc->good_crc = vh->sha1;
509 vc->bad_crc = sha1_ctx.H;
510 vc->crc_len = sizeof(vh->sha1);
511 log_verify_failure(hdr, vc);
512 return EILSEQ;
513}
514
515static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
516{
517 void *p = io_u_verify_off(hdr, vc);
518 struct vhdr_crc7 *vh = hdr_priv(hdr);
519 unsigned char c;
520
521 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
522
523 c = fio_crc7(p, hdr->len - hdr_size(hdr));
524
525 if (c == vh->crc7)
526 return 0;
527
528 vc->name = "crc7";
529 vc->good_crc = &vh->crc7;
530 vc->bad_crc = &c;
531 vc->crc_len = 1;
532 log_verify_failure(hdr, vc);
533 return EILSEQ;
534}
535
536static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
537{
538 void *p = io_u_verify_off(hdr, vc);
539 struct vhdr_crc16 *vh = hdr_priv(hdr);
540 unsigned short c;
541
542 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
543
544 c = fio_crc16(p, hdr->len - hdr_size(hdr));
545
546 if (c == vh->crc16)
547 return 0;
548
549 vc->name = "crc16";
550 vc->good_crc = &vh->crc16;
551 vc->bad_crc = &c;
552 vc->crc_len = 2;
553 log_verify_failure(hdr, vc);
554 return EILSEQ;
555}
556
557static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
558{
559 void *p = io_u_verify_off(hdr, vc);
560 struct vhdr_crc64 *vh = hdr_priv(hdr);
561 unsigned long long c;
562
563 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
564
565 c = fio_crc64(p, hdr->len - hdr_size(hdr));
566
567 if (c == vh->crc64)
568 return 0;
569
570 vc->name = "crc64";
571 vc->good_crc = &vh->crc64;
572 vc->bad_crc = &c;
573 vc->crc_len = 8;
574 log_verify_failure(hdr, vc);
575 return EILSEQ;
576}
577
578static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
579{
580 void *p = io_u_verify_off(hdr, vc);
581 struct vhdr_crc32 *vh = hdr_priv(hdr);
582 uint32_t c;
583
584 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
585
586 c = fio_crc32(p, hdr->len - hdr_size(hdr));
587
588 if (c == vh->crc32)
589 return 0;
590
591 vc->name = "crc32";
592 vc->good_crc = &vh->crc32;
593 vc->bad_crc = &c;
594 vc->crc_len = 4;
595 log_verify_failure(hdr, vc);
596 return EILSEQ;
597}
598
599static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
600{
601 void *p = io_u_verify_off(hdr, vc);
602 struct vhdr_crc32 *vh = hdr_priv(hdr);
603 uint32_t c;
604
605 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
606
607 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
608
609 if (c == vh->crc32)
610 return 0;
611
612 vc->name = "crc32c";
613 vc->good_crc = &vh->crc32;
614 vc->bad_crc = &c;
615 vc->crc_len = 4;
616 log_verify_failure(hdr, vc);
617 return EILSEQ;
618}
619
620static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
621{
622 void *p = io_u_verify_off(hdr, vc);
623 struct vhdr_md5 *vh = hdr_priv(hdr);
624 uint32_t hash[MD5_HASH_WORDS];
625 struct fio_md5_ctx md5_ctx = {
626 .hash = hash,
627 };
628
629 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
630
631 fio_md5_init(&md5_ctx);
632 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
633 fio_md5_final(&md5_ctx);
634
635 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
636 return 0;
637
638 vc->name = "md5";
639 vc->good_crc = vh->md5_digest;
640 vc->bad_crc = md5_ctx.hash;
641 vc->crc_len = sizeof(hash);
642 log_verify_failure(hdr, vc);
643 return EILSEQ;
644}
645
646/*
647 * Push IO verification to a separate thread
648 */
649int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
650{
651 struct io_u *io_u = *io_u_ptr;
652
653 pthread_mutex_lock(&td->io_u_lock);
654
655 if (io_u->file)
656 put_file_log(td, io_u->file);
657
658 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
659 td->cur_depth--;
660 io_u_clear(io_u, IO_U_F_IN_CUR_DEPTH);
661 }
662 flist_add_tail(&io_u->verify_list, &td->verify_list);
663 *io_u_ptr = NULL;
664 pthread_mutex_unlock(&td->io_u_lock);
665
666 pthread_cond_signal(&td->verify_cond);
667 return 0;
668}
669
670static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
671{
672 static char zero_buf[1024];
673 unsigned int this_len, len;
674 int ret = 0;
675 void *p;
676
677 if (!td->o.trim_zero)
678 return 0;
679
680 len = io_u->buflen;
681 p = io_u->buf;
682 do {
683 this_len = sizeof(zero_buf);
684 if (this_len > len)
685 this_len = len;
686 if (memcmp(p, zero_buf, this_len)) {
687 ret = EILSEQ;
688 break;
689 }
690 len -= this_len;
691 p += this_len;
692 } while (len);
693
694 if (!ret)
695 return 0;
696
697 log_err("trim: verify failed at file %s offset %llu, length %lu"
698 ", block offset %lu\n",
699 io_u->file->file_name, io_u->offset, io_u->buflen,
700 (unsigned long) (p - io_u->buf));
701 return ret;
702}
703
704static int verify_header(struct io_u *io_u, struct verify_header *hdr,
705 unsigned int hdr_num, unsigned int hdr_len)
706{
707 void *p = hdr;
708 uint32_t crc;
709
710 if (hdr->magic != FIO_HDR_MAGIC) {
711 log_err("verify: bad magic header %x, wanted %x",
712 hdr->magic, FIO_HDR_MAGIC);
713 goto err;
714 }
715 if (hdr->len != hdr_len) {
716 log_err("verify: bad header length %u, wanted %u",
717 hdr->len, hdr_len);
718 goto err;
719 }
720 if (hdr->rand_seed != io_u->rand_seed) {
721 log_err("verify: bad header rand_seed %"PRIu64
722 ", wanted %"PRIu64,
723 hdr->rand_seed, io_u->rand_seed);
724 goto err;
725 }
726
727 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
728 if (crc != hdr->crc32) {
729 log_err("verify: bad header crc %x, calculated %x",
730 hdr->crc32, crc);
731 goto err;
732 }
733 return 0;
734
735err:
736 log_err(" at file %s offset %llu, length %u\n",
737 io_u->file->file_name,
738 io_u->offset + hdr_num * hdr_len, hdr_len);
739 return EILSEQ;
740}
741
742int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
743{
744 struct verify_header *hdr;
745 struct io_u *io_u = *io_u_ptr;
746 unsigned int header_size, hdr_inc, hdr_num = 0;
747 void *p;
748 int ret;
749
750 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
751 return 0;
752 /*
753 * If the IO engine is faking IO (like null), then just pretend
754 * we verified everything.
755 */
756 if (td->io_ops->flags & FIO_FAKEIO)
757 return 0;
758
759 if (io_u->flags & IO_U_F_TRIMMED) {
760 ret = verify_trimmed_io_u(td, io_u);
761 goto done;
762 }
763
764 hdr_inc = get_hdr_inc(td, io_u);
765
766 ret = 0;
767 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
768 p += hdr_inc, hdr_num++) {
769 struct vcont vc = {
770 .io_u = io_u,
771 .hdr_num = hdr_num,
772 .td = td,
773 };
774 unsigned int verify_type;
775
776 if (ret && td->o.verify_fatal)
777 break;
778
779 header_size = __hdr_size(td->o.verify);
780 if (td->o.verify_offset)
781 memswp(p, p + td->o.verify_offset, header_size);
782 hdr = p;
783
784 /*
785 * Make rand_seed check pass when have verifysort or
786 * verify_backlog.
787 */
788 if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG))
789 io_u->rand_seed = hdr->rand_seed;
790
791 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
792 ret = verify_header(io_u, hdr, hdr_num, hdr_inc);
793 if (ret)
794 return ret;
795 }
796
797 if (td->o.verify != VERIFY_NONE)
798 verify_type = td->o.verify;
799 else
800 verify_type = hdr->verify_type;
801
802 switch (verify_type) {
803 case VERIFY_MD5:
804 ret = verify_io_u_md5(hdr, &vc);
805 break;
806 case VERIFY_CRC64:
807 ret = verify_io_u_crc64(hdr, &vc);
808 break;
809 case VERIFY_CRC32C:
810 case VERIFY_CRC32C_INTEL:
811 ret = verify_io_u_crc32c(hdr, &vc);
812 break;
813 case VERIFY_CRC32:
814 ret = verify_io_u_crc32(hdr, &vc);
815 break;
816 case VERIFY_CRC16:
817 ret = verify_io_u_crc16(hdr, &vc);
818 break;
819 case VERIFY_CRC7:
820 ret = verify_io_u_crc7(hdr, &vc);
821 break;
822 case VERIFY_SHA256:
823 ret = verify_io_u_sha256(hdr, &vc);
824 break;
825 case VERIFY_SHA512:
826 ret = verify_io_u_sha512(hdr, &vc);
827 break;
828 case VERIFY_XXHASH:
829 ret = verify_io_u_xxhash(hdr, &vc);
830 break;
831 case VERIFY_META:
832 ret = verify_io_u_meta(hdr, &vc);
833 break;
834 case VERIFY_SHA1:
835 ret = verify_io_u_sha1(hdr, &vc);
836 break;
837 case VERIFY_PATTERN:
838 case VERIFY_PATTERN_NO_HDR:
839 ret = verify_io_u_pattern(hdr, &vc);
840 break;
841 default:
842 log_err("Bad verify type %u\n", hdr->verify_type);
843 ret = EINVAL;
844 }
845
846 if (ret && verify_type != hdr->verify_type)
847 log_err("fio: verify type mismatch (%u media, %u given)\n",
848 hdr->verify_type, verify_type);
849 }
850
851done:
852 if (ret && td->o.verify_fatal)
853 fio_mark_td_terminate(td);
854
855 return ret;
856}
857
858static void fill_meta(struct verify_header *hdr, struct thread_data *td,
859 struct io_u *io_u, unsigned int header_num)
860{
861 struct vhdr_meta *vh = hdr_priv(hdr);
862
863 vh->thread = td->thread_number;
864
865 vh->time_sec = io_u->start_time.tv_sec;
866 vh->time_usec = io_u->start_time.tv_usec;
867
868 vh->numberio = io_u->numberio;
869
870 vh->offset = io_u->offset + header_num * td->o.verify_interval;
871}
872
873static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
874{
875 struct vhdr_xxhash *vh = hdr_priv(hdr);
876 void *state;
877
878 state = XXH32_init(1);
879 XXH32_update(state, p, len);
880 vh->hash = XXH32_digest(state);
881}
882
883static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
884{
885 struct vhdr_sha512 *vh = hdr_priv(hdr);
886 struct fio_sha512_ctx sha512_ctx = {
887 .buf = vh->sha512,
888 };
889
890 fio_sha512_init(&sha512_ctx);
891 fio_sha512_update(&sha512_ctx, p, len);
892}
893
894static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
895{
896 struct vhdr_sha256 *vh = hdr_priv(hdr);
897 struct fio_sha256_ctx sha256_ctx = {
898 .buf = vh->sha256,
899 };
900
901 fio_sha256_init(&sha256_ctx);
902 fio_sha256_update(&sha256_ctx, p, len);
903 fio_sha256_final(&sha256_ctx);
904}
905
906static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
907{
908 struct vhdr_sha1 *vh = hdr_priv(hdr);
909 struct fio_sha1_ctx sha1_ctx = {
910 .H = vh->sha1,
911 };
912
913 fio_sha1_init(&sha1_ctx);
914 fio_sha1_update(&sha1_ctx, p, len);
915 fio_sha1_final(&sha1_ctx);
916}
917
918static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
919{
920 struct vhdr_crc7 *vh = hdr_priv(hdr);
921
922 vh->crc7 = fio_crc7(p, len);
923}
924
925static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
926{
927 struct vhdr_crc16 *vh = hdr_priv(hdr);
928
929 vh->crc16 = fio_crc16(p, len);
930}
931
932static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
933{
934 struct vhdr_crc32 *vh = hdr_priv(hdr);
935
936 vh->crc32 = fio_crc32(p, len);
937}
938
939static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
940{
941 struct vhdr_crc32 *vh = hdr_priv(hdr);
942
943 vh->crc32 = fio_crc32c(p, len);
944}
945
946static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
947{
948 struct vhdr_crc64 *vh = hdr_priv(hdr);
949
950 vh->crc64 = fio_crc64(p, len);
951}
952
953static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
954{
955 struct vhdr_md5 *vh = hdr_priv(hdr);
956 struct fio_md5_ctx md5_ctx = {
957 .hash = (uint32_t *) vh->md5_digest,
958 };
959
960 fio_md5_init(&md5_ctx);
961 fio_md5_update(&md5_ctx, p, len);
962 fio_md5_final(&md5_ctx);
963}
964
965static void populate_hdr(struct thread_data *td, struct io_u *io_u,
966 struct verify_header *hdr, unsigned int header_num,
967 unsigned int header_len)
968{
969 unsigned int data_len;
970 void *data, *p;
971
972 if (td->o.verify == VERIFY_PATTERN_NO_HDR)
973 return;
974
975 p = (void *) hdr;
976
977 hdr->magic = FIO_HDR_MAGIC;
978 hdr->verify_type = td->o.verify;
979 hdr->len = header_len;
980 hdr->rand_seed = io_u->rand_seed;
981 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
982
983 data_len = header_len - hdr_size(hdr);
984
985 data = p + hdr_size(hdr);
986 switch (td->o.verify) {
987 case VERIFY_MD5:
988 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
989 io_u, hdr->len);
990 fill_md5(hdr, data, data_len);
991 break;
992 case VERIFY_CRC64:
993 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
994 io_u, hdr->len);
995 fill_crc64(hdr, data, data_len);
996 break;
997 case VERIFY_CRC32C:
998 case VERIFY_CRC32C_INTEL:
999 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1000 io_u, hdr->len);
1001 fill_crc32c(hdr, data, data_len);
1002 break;
1003 case VERIFY_CRC32:
1004 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1005 io_u, hdr->len);
1006 fill_crc32(hdr, data, data_len);
1007 break;
1008 case VERIFY_CRC16:
1009 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1010 io_u, hdr->len);
1011 fill_crc16(hdr, data, data_len);
1012 break;
1013 case VERIFY_CRC7:
1014 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1015 io_u, hdr->len);
1016 fill_crc7(hdr, data, data_len);
1017 break;
1018 case VERIFY_SHA256:
1019 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1020 io_u, hdr->len);
1021 fill_sha256(hdr, data, data_len);
1022 break;
1023 case VERIFY_SHA512:
1024 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1025 io_u, hdr->len);
1026 fill_sha512(hdr, data, data_len);
1027 break;
1028 case VERIFY_XXHASH:
1029 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1030 io_u, hdr->len);
1031 fill_xxhash(hdr, data, data_len);
1032 break;
1033 case VERIFY_META:
1034 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
1035 io_u, hdr->len);
1036 fill_meta(hdr, td, io_u, header_num);
1037 break;
1038 case VERIFY_SHA1:
1039 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1040 io_u, hdr->len);
1041 fill_sha1(hdr, data, data_len);
1042 break;
1043 case VERIFY_PATTERN:
1044 /* nothing to do here */
1045 break;
1046 default:
1047 log_err("fio: bad verify type: %d\n", td->o.verify);
1048 assert(0);
1049 }
1050 if (td->o.verify_offset)
1051 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
1052}
1053
1054/*
1055 * fill body of io_u->buf with random data and add a header with the
1056 * checksum of choice
1057 */
1058void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1059{
1060 if (td->o.verify == VERIFY_NULL)
1061 return;
1062
1063 io_u->numberio = td->io_issues[io_u->ddir];
1064
1065 fill_pattern_headers(td, io_u, 0, 0);
1066}
1067
1068int get_next_verify(struct thread_data *td, struct io_u *io_u)
1069{
1070 struct io_piece *ipo = NULL;
1071
1072 /*
1073 * this io_u is from a requeue, we already filled the offsets
1074 */
1075 if (io_u->file)
1076 return 0;
1077
1078 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1079 struct rb_node *n = rb_first(&td->io_hist_tree);
1080
1081 ipo = rb_entry(n, struct io_piece, rb_node);
1082
1083 /*
1084 * Ensure that the associated IO has completed
1085 */
1086 read_barrier();
1087 if (ipo->flags & IP_F_IN_FLIGHT)
1088 goto nothing;
1089
1090 rb_erase(n, &td->io_hist_tree);
1091 assert(ipo->flags & IP_F_ONRB);
1092 ipo->flags &= ~IP_F_ONRB;
1093 } else if (!flist_empty(&td->io_hist_list)) {
1094 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1095
1096 /*
1097 * Ensure that the associated IO has completed
1098 */
1099 read_barrier();
1100 if (ipo->flags & IP_F_IN_FLIGHT)
1101 goto nothing;
1102
1103 flist_del(&ipo->list);
1104 assert(ipo->flags & IP_F_ONLIST);
1105 ipo->flags &= ~IP_F_ONLIST;
1106 }
1107
1108 if (ipo) {
1109 td->io_hist_len--;
1110
1111 io_u->offset = ipo->offset;
1112 io_u->buflen = ipo->len;
1113 io_u->numberio = ipo->numberio;
1114 io_u->file = ipo->file;
1115 io_u_set(io_u, IO_U_F_VER_LIST);
1116
1117 if (ipo->flags & IP_F_TRIMMED)
1118 io_u_set(io_u, IO_U_F_TRIMMED);
1119
1120 if (!fio_file_open(io_u->file)) {
1121 int r = td_io_open_file(td, io_u->file);
1122
1123 if (r) {
1124 dprint(FD_VERIFY, "failed file %s open\n",
1125 io_u->file->file_name);
1126 return 1;
1127 }
1128 }
1129
1130 get_file(ipo->file);
1131 assert(fio_file_open(io_u->file));
1132 io_u->ddir = DDIR_READ;
1133 io_u->xfer_buf = io_u->buf;
1134 io_u->xfer_buflen = io_u->buflen;
1135
1136 remove_trim_entry(td, ipo);
1137 free(ipo);
1138 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1139
1140 if (!td->o.verify_pattern_bytes) {
1141 io_u->rand_seed = __rand(&td->verify_state);
1142 if (sizeof(int) != sizeof(long *))
1143 io_u->rand_seed *= __rand(&td->verify_state);
1144 }
1145 return 0;
1146 }
1147
1148nothing:
1149 dprint(FD_VERIFY, "get_next_verify: empty\n");
1150 return 1;
1151}
1152
1153void fio_verify_init(struct thread_data *td)
1154{
1155 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1156 td->o.verify == VERIFY_CRC32C) {
1157 crc32c_intel_probe();
1158 }
1159}
1160
1161static void *verify_async_thread(void *data)
1162{
1163 struct thread_data *td = data;
1164 struct io_u *io_u;
1165 int ret = 0;
1166
1167 if (fio_option_is_set(&td->o, verify_cpumask) &&
1168 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1169 log_err("fio: failed setting verify thread affinity\n");
1170 goto done;
1171 }
1172
1173 do {
1174 FLIST_HEAD(list);
1175
1176 read_barrier();
1177 if (td->verify_thread_exit)
1178 break;
1179
1180 pthread_mutex_lock(&td->io_u_lock);
1181
1182 while (flist_empty(&td->verify_list) &&
1183 !td->verify_thread_exit) {
1184 ret = pthread_cond_wait(&td->verify_cond,
1185 &td->io_u_lock);
1186 if (ret) {
1187 pthread_mutex_unlock(&td->io_u_lock);
1188 break;
1189 }
1190 }
1191
1192 flist_splice_init(&td->verify_list, &list);
1193 pthread_mutex_unlock(&td->io_u_lock);
1194
1195 if (flist_empty(&list))
1196 continue;
1197
1198 while (!flist_empty(&list)) {
1199 io_u = flist_first_entry(&list, struct io_u, verify_list);
1200 flist_del_init(&io_u->verify_list);
1201
1202 io_u_set(io_u, IO_U_F_NO_FILE_PUT);
1203 ret = verify_io_u(td, &io_u);
1204
1205 put_io_u(td, io_u);
1206 if (!ret)
1207 continue;
1208 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1209 update_error_count(td, ret);
1210 td_clear_error(td);
1211 ret = 0;
1212 }
1213 }
1214 } while (!ret);
1215
1216 if (ret) {
1217 td_verror(td, ret, "async_verify");
1218 if (td->o.verify_fatal)
1219 fio_mark_td_terminate(td);
1220 }
1221
1222done:
1223 pthread_mutex_lock(&td->io_u_lock);
1224 td->nr_verify_threads--;
1225 pthread_mutex_unlock(&td->io_u_lock);
1226
1227 pthread_cond_signal(&td->free_cond);
1228 return NULL;
1229}
1230
1231int verify_async_init(struct thread_data *td)
1232{
1233 int i, ret;
1234 pthread_attr_t attr;
1235
1236 pthread_attr_init(&attr);
1237 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1238
1239 td->verify_thread_exit = 0;
1240
1241 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1242 for (i = 0; i < td->o.verify_async; i++) {
1243 ret = pthread_create(&td->verify_threads[i], &attr,
1244 verify_async_thread, td);
1245 if (ret) {
1246 log_err("fio: async verify creation failed: %s\n",
1247 strerror(ret));
1248 break;
1249 }
1250 ret = pthread_detach(td->verify_threads[i]);
1251 if (ret) {
1252 log_err("fio: async verify thread detach failed: %s\n",
1253 strerror(ret));
1254 break;
1255 }
1256 td->nr_verify_threads++;
1257 }
1258
1259 pthread_attr_destroy(&attr);
1260
1261 if (i != td->o.verify_async) {
1262 log_err("fio: only %d verify threads started, exiting\n", i);
1263 td->verify_thread_exit = 1;
1264 write_barrier();
1265 pthread_cond_broadcast(&td->verify_cond);
1266 return 1;
1267 }
1268
1269 return 0;
1270}
1271
1272void verify_async_exit(struct thread_data *td)
1273{
1274 td->verify_thread_exit = 1;
1275 write_barrier();
1276 pthread_cond_broadcast(&td->verify_cond);
1277
1278 pthread_mutex_lock(&td->io_u_lock);
1279
1280 while (td->nr_verify_threads)
1281 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1282
1283 pthread_mutex_unlock(&td->io_u_lock);
1284 free(td->verify_threads);
1285 td->verify_threads = NULL;
1286}
1287
1288struct all_io_list *get_all_io_list(int save_mask, size_t *sz)
1289{
1290 struct all_io_list *rep;
1291 struct thread_data *td;
1292 size_t depth;
1293 void *next;
1294 int i, nr;
1295
1296 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1297
1298 /*
1299 * Calculate reply space needed. We need one 'io_state' per thread,
1300 * and the size will vary depending on depth.
1301 */
1302 depth = 0;
1303 nr = 0;
1304 for_each_td(td, i) {
1305 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1306 continue;
1307 td->stop_io = 1;
1308 td->flags |= TD_F_VSTATE_SAVED;
1309 depth += td->o.iodepth;
1310 nr++;
1311 }
1312
1313 if (!nr)
1314 return NULL;
1315
1316 *sz = sizeof(*rep);
1317 *sz += nr * sizeof(struct thread_io_list);
1318 *sz += depth * sizeof(uint64_t);
1319 rep = malloc(*sz);
1320
1321 rep->threads = cpu_to_le64((uint64_t) nr);
1322
1323 next = &rep->state[0];
1324 for_each_td(td, i) {
1325 struct thread_io_list *s = next;
1326 unsigned int comps;
1327
1328 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1329 continue;
1330
1331 if (td->last_write_comp) {
1332 int j, k;
1333
1334 if (td->io_blocks[DDIR_WRITE] < td->o.iodepth)
1335 comps = td->io_blocks[DDIR_WRITE];
1336 else
1337 comps = td->o.iodepth;
1338
1339 k = td->last_write_idx - 1;
1340 for (j = 0; j < comps; j++) {
1341 if (k == -1)
1342 k = td->o.iodepth - 1;
1343 s->offsets[j] = cpu_to_le64(td->last_write_comp[k]);
1344 k--;
1345 }
1346 } else
1347 comps = 0;
1348
1349 s->no_comps = cpu_to_le64((uint64_t) comps);
1350 s->depth = cpu_to_le64((uint64_t) td->o.iodepth);
1351 s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]);
1352 s->index = cpu_to_le64((uint64_t) i);
1353 if (td->random_state.use64) {
1354 s->rand.state64.s[0] = cpu_to_le64(td->random_state.state64.s1);
1355 s->rand.state64.s[1] = cpu_to_le64(td->random_state.state64.s2);
1356 s->rand.state64.s[2] = cpu_to_le64(td->random_state.state64.s3);
1357 s->rand.state64.s[3] = cpu_to_le64(td->random_state.state64.s4);
1358 s->rand.state64.s[4] = cpu_to_le64(td->random_state.state64.s5);
1359 s->rand.state64.s[5] = 0;
1360 s->rand.use64 = cpu_to_le64((uint64_t)1);
1361 } else {
1362 s->rand.state32.s[0] = cpu_to_le32(td->random_state.state32.s1);
1363 s->rand.state32.s[1] = cpu_to_le32(td->random_state.state32.s2);
1364 s->rand.state32.s[2] = cpu_to_le32(td->random_state.state32.s3);
1365 s->rand.state32.s[3] = 0;
1366 s->rand.use64 = 0;
1367 }
1368 s->name[sizeof(s->name) - 1] = '\0';
1369 strncpy((char *) s->name, td->o.name, sizeof(s->name) - 1);
1370 next = io_list_next(s);
1371 }
1372
1373 return rep;
1374}
1375
1376static int open_state_file(const char *name, const char *prefix, int num,
1377 int for_write)
1378{
1379 char out[64];
1380 int flags;
1381 int fd;
1382
1383 if (for_write)
1384 flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC;
1385 else
1386 flags = O_RDONLY;
1387
1388 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1389
1390 fd = open(out, flags, 0644);
1391 if (fd == -1) {
1392 perror("fio: open state file");
1393 return -1;
1394 }
1395
1396 return fd;
1397}
1398
1399static int write_thread_list_state(struct thread_io_list *s,
1400 const char *prefix)
1401{
1402 struct verify_state_hdr hdr;
1403 uint64_t crc;
1404 ssize_t ret;
1405 int fd;
1406
1407 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1408 if (fd == -1)
1409 return 1;
1410
1411 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1412
1413 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1414 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1415 hdr.crc = cpu_to_le64(crc);
1416 ret = write(fd, &hdr, sizeof(hdr));
1417 if (ret != sizeof(hdr))
1418 goto write_fail;
1419
1420 ret = write(fd, s, thread_io_list_sz(s));
1421 if (ret != thread_io_list_sz(s)) {
1422write_fail:
1423 if (ret < 0)
1424 perror("fio: write state file");
1425 log_err("fio: failed to write state file\n");
1426 ret = 1;
1427 } else
1428 ret = 0;
1429
1430 close(fd);
1431 return ret;
1432}
1433
1434void __verify_save_state(struct all_io_list *state, const char *prefix)
1435{
1436 struct thread_io_list *s = &state->state[0];
1437 unsigned int i;
1438
1439 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1440 write_thread_list_state(s, prefix);
1441 s = io_list_next(s);
1442 }
1443}
1444
1445void verify_save_state(void)
1446{
1447 struct all_io_list *state;
1448 size_t sz;
1449
1450 state = get_all_io_list(IO_LIST_ALL, &sz);
1451 if (state) {
1452 __verify_save_state(state, "local");
1453 free(state);
1454 }
1455}
1456
1457void verify_free_state(struct thread_data *td)
1458{
1459 if (td->vstate)
1460 free(td->vstate);
1461}
1462
1463static struct thread_io_list *convert_v1_list(struct thread_io_list_v1 *s)
1464{
1465 struct thread_io_list *til;
1466 int i;
1467
1468 til = malloc(__thread_io_list_sz(s->no_comps));
1469 til->no_comps = s->no_comps;
1470 til->depth = s->depth;
1471 til->numberio = s->numberio;
1472 til->index = s->index;
1473 memcpy(til->name, s->name, sizeof(til->name));
1474
1475 til->rand.use64 = 0;
1476 for (i = 0; i < 4; i++)
1477 til->rand.state32.s[i] = s->rand.s[i];
1478
1479 for (i = 0; i < s->no_comps; i++)
1480 til->offsets[i] = s->offsets[i];
1481
1482 return til;
1483}
1484
1485void verify_convert_assign_state(struct thread_data *td, void *p, int version)
1486{
1487 struct thread_io_list *til;
1488 int i;
1489
1490 if (version == 1) {
1491 struct thread_io_list_v1 *s = p;
1492
1493 s->no_comps = le64_to_cpu(s->no_comps);
1494 s->depth = le64_to_cpu(s->depth);
1495 s->numberio = le64_to_cpu(s->numberio);
1496 for (i = 0; i < 4; i++)
1497 s->rand.s[i] = le32_to_cpu(s->rand.s[i]);
1498 for (i = 0; i < s->no_comps; i++)
1499 s->offsets[i] = le64_to_cpu(s->offsets[i]);
1500
1501 til = convert_v1_list(s);
1502 free(s);
1503 } else {
1504 struct thread_io_list *s = p;
1505
1506 s->no_comps = le64_to_cpu(s->no_comps);
1507 s->depth = le64_to_cpu(s->depth);
1508 s->numberio = le64_to_cpu(s->numberio);
1509 s->rand.use64 = le64_to_cpu(s->rand.use64);
1510
1511 if (s->rand.use64) {
1512 for (i = 0; i < 6; i++)
1513 s->rand.state64.s[i] = le64_to_cpu(s->rand.state64.s[i]);
1514 } else {
1515 for (i = 0; i < 4; i++)
1516 s->rand.state32.s[i] = le32_to_cpu(s->rand.state32.s[i]);
1517 }
1518 for (i = 0; i < s->no_comps; i++)
1519 s->offsets[i] = le64_to_cpu(s->offsets[i]);
1520
1521 til = p;
1522 }
1523
1524 td->vstate = til;
1525}
1526
1527int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s,
1528 int *version)
1529{
1530 uint64_t crc;
1531
1532 hdr->version = le64_to_cpu(hdr->version);
1533 hdr->size = le64_to_cpu(hdr->size);
1534 hdr->crc = le64_to_cpu(hdr->crc);
1535
1536 if (hdr->version != VSTATE_HDR_VERSION ||
1537 hdr->version != VSTATE_HDR_VERSION_V1)
1538 return 1;
1539
1540 crc = fio_crc32c((void *)s, hdr->size);
1541 if (crc != hdr->crc)
1542 return 1;
1543
1544 *version = hdr->version;
1545 return 0;
1546}
1547
1548int verify_load_state(struct thread_data *td, const char *prefix)
1549{
1550 struct verify_state_hdr hdr;
1551 void *s = NULL;
1552 uint64_t crc;
1553 ssize_t ret;
1554 int fd;
1555
1556 if (!td->o.verify_state)
1557 return 0;
1558
1559 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1560 if (fd == -1)
1561 return 1;
1562
1563 ret = read(fd, &hdr, sizeof(hdr));
1564 if (ret != sizeof(hdr)) {
1565 if (ret < 0)
1566 td_verror(td, errno, "read verify state hdr");
1567 log_err("fio: failed reading verify state header\n");
1568 goto err;
1569 }
1570
1571 hdr.version = le64_to_cpu(hdr.version);
1572 hdr.size = le64_to_cpu(hdr.size);
1573 hdr.crc = le64_to_cpu(hdr.crc);
1574
1575 if (hdr.version != VSTATE_HDR_VERSION &&
1576 hdr.version != VSTATE_HDR_VERSION_V1) {
1577 log_err("fio: bad version in verify state header\n");
1578 goto err;
1579 }
1580
1581 s = malloc(hdr.size);
1582 ret = read(fd, s, hdr.size);
1583 if (ret != hdr.size) {
1584 if (ret < 0)
1585 td_verror(td, errno, "read verify state");
1586 log_err("fio: failed reading verity state\n");
1587 goto err;
1588 }
1589
1590 crc = fio_crc32c(s, hdr.size);
1591 if (crc != hdr.crc) {
1592 log_err("fio: verify state is corrupt\n");
1593 goto err;
1594 }
1595
1596 close(fd);
1597
1598 verify_convert_assign_state(td, s, hdr.version);
1599 return 0;
1600err:
1601 if (s)
1602 free(s);
1603 close(fd);
1604 return 1;
1605}
1606
1607/*
1608 * Use the loaded verify state to know when to stop doing verification
1609 */
1610int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1611{
1612 struct thread_io_list *s = td->vstate;
1613 int i;
1614
1615 if (!s)
1616 return 0;
1617
1618 /*
1619 * If we're not into the window of issues - depth yet, continue. If
1620 * issue is shorter than depth, do check.
1621 */
1622 if ((td->io_blocks[DDIR_READ] < s->depth ||
1623 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1624 s->numberio > s->depth)
1625 return 0;
1626
1627 /*
1628 * We're in the window of having to check if this io was
1629 * completed or not. If the IO was seen as completed, then
1630 * lets verify it.
1631 */
1632 for (i = 0; i < s->no_comps; i++)
1633 if (io_u->offset == s->offsets[i])
1634 return 0;
1635
1636 /*
1637 * Not found, we have to stop
1638 */
1639 return 1;
1640}
fio - Flexible IO Tester