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Use aux_path, if set, when loading verify state
[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#include "lib/pattern.h"
17#include "oslib/asprintf.h"
18
19#include "crc/md5.h"
20#include "crc/crc64.h"
21#include "crc/crc32.h"
22#include "crc/crc32c.h"
23#include "crc/crc16.h"
24#include "crc/crc7.h"
25#include "crc/sha256.h"
26#include "crc/sha512.h"
27#include "crc/sha1.h"
28#include "crc/xxhash.h"
29#include "crc/sha3.h"
30
31static void populate_hdr(struct thread_data *td, struct io_u *io_u,
32 struct verify_header *hdr, unsigned int header_num,
33 unsigned int header_len);
34static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
35 struct verify_header *hdr, unsigned int header_num,
36 unsigned int header_len, uint64_t rand_seed);
37
38void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
39{
40 (void)cpy_pattern(td->o.buffer_pattern, td->o.buffer_pattern_bytes, p, len);
41}
42
43static void __fill_buffer(struct thread_options *o, uint64_t seed, void *p,
44 unsigned int len)
45{
46 __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
47}
48
49static uint64_t fill_buffer(struct thread_data *td, void *p,
50 unsigned int len)
51{
52 struct frand_state *fs = &td->verify_state;
53 struct thread_options *o = &td->o;
54
55 return fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
56}
57
58void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
59 struct io_u *io_u, uint64_t seed, int use_seed)
60{
61 struct thread_options *o = &td->o;
62
63 if (!o->verify_pattern_bytes) {
64 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
65
66 if (use_seed)
67 __fill_buffer(o, seed, p, len);
68 else
69 io_u->rand_seed = fill_buffer(td, p, len);
70 return;
71 }
72
73 /* Skip if we were here and we do not need to patch pattern
74 * with format */
75 if (!td->o.verify_fmt_sz && io_u->buf_filled_len >= len) {
76 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
77 o->verify_pattern_bytes, len);
78 return;
79 }
80
81 (void)paste_format(td->o.verify_pattern, td->o.verify_pattern_bytes,
82 td->o.verify_fmt, td->o.verify_fmt_sz,
83 p, len, io_u);
84 io_u->buf_filled_len = len;
85}
86
87static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
88{
89 unsigned int hdr_inc;
90
91 /*
92 * If we use bs_unaligned, buflen can be larger than the verify
93 * interval (which just defaults to the smallest blocksize possible).
94 */
95 hdr_inc = io_u->buflen;
96 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen &&
97 !td->o.bs_unaligned)
98 hdr_inc = td->o.verify_interval;
99
100 return hdr_inc;
101}
102
103static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
104 uint64_t seed, int use_seed)
105{
106 unsigned int hdr_inc, header_num;
107 struct verify_header *hdr;
108 void *p = io_u->buf;
109
110 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
111
112 hdr_inc = get_hdr_inc(td, io_u);
113 header_num = 0;
114 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
115 hdr = p;
116 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
117 header_num++;
118 }
119}
120
121static void memswp(void *buf1, void *buf2, unsigned int len)
122{
123 char swap[200];
124
125 assert(len <= sizeof(swap));
126
127 memcpy(&swap, buf1, len);
128 memcpy(buf1, buf2, len);
129 memcpy(buf2, &swap, len);
130}
131
132static void hexdump(void *buffer, int len)
133{
134 unsigned char *p = buffer;
135 int i;
136
137 for (i = 0; i < len; i++)
138 log_err("%02x", p[i]);
139 log_err("\n");
140}
141
142/*
143 * Prepare for separation of verify_header and checksum header
144 */
145static inline unsigned int __hdr_size(int verify_type)
146{
147 unsigned int len = 0;
148
149 switch (verify_type) {
150 case VERIFY_NONE:
151 case VERIFY_HDR_ONLY:
152 case VERIFY_NULL:
153 case VERIFY_PATTERN:
154 len = 0;
155 break;
156 case VERIFY_MD5:
157 len = sizeof(struct vhdr_md5);
158 break;
159 case VERIFY_CRC64:
160 len = sizeof(struct vhdr_crc64);
161 break;
162 case VERIFY_CRC32C:
163 case VERIFY_CRC32:
164 case VERIFY_CRC32C_INTEL:
165 len = sizeof(struct vhdr_crc32);
166 break;
167 case VERIFY_CRC16:
168 len = sizeof(struct vhdr_crc16);
169 break;
170 case VERIFY_CRC7:
171 len = sizeof(struct vhdr_crc7);
172 break;
173 case VERIFY_SHA256:
174 len = sizeof(struct vhdr_sha256);
175 break;
176 case VERIFY_SHA512:
177 len = sizeof(struct vhdr_sha512);
178 break;
179 case VERIFY_SHA3_224:
180 len = sizeof(struct vhdr_sha3_224);
181 break;
182 case VERIFY_SHA3_256:
183 len = sizeof(struct vhdr_sha3_256);
184 break;
185 case VERIFY_SHA3_384:
186 len = sizeof(struct vhdr_sha3_384);
187 break;
188 case VERIFY_SHA3_512:
189 len = sizeof(struct vhdr_sha3_512);
190 break;
191 case VERIFY_XXHASH:
192 len = sizeof(struct vhdr_xxhash);
193 break;
194 case VERIFY_SHA1:
195 len = sizeof(struct vhdr_sha1);
196 break;
197 case VERIFY_PATTERN_NO_HDR:
198 return 0;
199 default:
200 log_err("fio: unknown verify header!\n");
201 assert(0);
202 }
203
204 return len + sizeof(struct verify_header);
205}
206
207static inline unsigned int hdr_size(struct thread_data *td,
208 struct verify_header *hdr)
209{
210 if (td->o.verify == VERIFY_PATTERN_NO_HDR)
211 return 0;
212
213 return __hdr_size(hdr->verify_type);
214}
215
216static void *hdr_priv(struct verify_header *hdr)
217{
218 void *priv = hdr;
219
220 return priv + sizeof(struct verify_header);
221}
222
223/*
224 * Verify container, pass info to verify handlers and allow them to
225 * pass info back in case of error
226 */
227struct vcont {
228 /*
229 * Input
230 */
231 struct io_u *io_u;
232 unsigned int hdr_num;
233 struct thread_data *td;
234
235 /*
236 * Output, only valid in case of error
237 */
238 const char *name;
239 void *good_crc;
240 void *bad_crc;
241 unsigned int crc_len;
242};
243
244#define DUMP_BUF_SZ 255
245
246static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
247 const char *type, struct fio_file *f)
248{
249 char *ptr, *fname;
250 char sep[2] = { FIO_OS_PATH_SEPARATOR, 0 };
251 int ret, fd;
252
253 ptr = strdup(f->file_name);
254
255 if (asprintf(&fname, "%s%s%s.%llu.%s", aux_path ? : "",
256 aux_path ? sep : "", basename(ptr), offset, type) < 0) {
257 if (!fio_did_warn(FIO_WARN_VERIFY_BUF))
258 log_err("fio: not enough memory for dump buffer filename\n");
259 goto free_ptr;
260 }
261
262 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
263 if (fd < 0) {
264 perror("open verify buf file");
265 goto free_fname;
266 }
267
268 while (len) {
269 ret = write(fd, buf, len);
270 if (!ret)
271 break;
272 else if (ret < 0) {
273 perror("write verify buf file");
274 break;
275 }
276 len -= ret;
277 buf += ret;
278 }
279
280 close(fd);
281 log_err(" %s data dumped as %s\n", type, fname);
282
283free_fname:
284 free(fname);
285
286free_ptr:
287 free(ptr);
288}
289
290/*
291 * Dump the contents of the read block and re-generate the correct data
292 * and dump that too.
293 */
294static void __dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
295{
296 struct thread_data *td = vc->td;
297 struct io_u *io_u = vc->io_u;
298 unsigned long hdr_offset;
299 struct io_u dummy;
300 void *buf;
301
302 if (!td->o.verify_dump)
303 return;
304
305 /*
306 * Dump the contents we just read off disk
307 */
308 hdr_offset = vc->hdr_num * hdr->len;
309
310 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
311 "received", vc->io_u->file);
312
313 /*
314 * Allocate a new buf and re-generate the original data
315 */
316 buf = malloc(io_u->buflen);
317 dummy = *io_u;
318 dummy.buf = buf;
319 dummy.rand_seed = hdr->rand_seed;
320 dummy.buf_filled_len = 0;
321 dummy.buflen = io_u->buflen;
322
323 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
324
325 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
326 "expected", vc->io_u->file);
327 free(buf);
328}
329
330static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
331{
332 struct thread_data *td = vc->td;
333 struct verify_header shdr;
334
335 if (td->o.verify == VERIFY_PATTERN_NO_HDR) {
336 __fill_hdr(td, vc->io_u, &shdr, 0, vc->io_u->buflen, 0);
337 hdr = &shdr;
338 }
339
340 __dump_verify_buffers(hdr, vc);
341}
342
343static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
344{
345 unsigned long long offset;
346
347 offset = vc->io_u->offset;
348 offset += vc->hdr_num * hdr->len;
349 log_err("%.8s: verify failed at file %s offset %llu, length %u"
350 " (requested block: offset=%llu, length=%llu)\n",
351 vc->name, vc->io_u->file->file_name, offset, hdr->len,
352 vc->io_u->offset, vc->io_u->buflen);
353
354 if (vc->good_crc && vc->bad_crc) {
355 log_err(" Expected CRC: ");
356 hexdump(vc->good_crc, vc->crc_len);
357 log_err(" Received CRC: ");
358 hexdump(vc->bad_crc, vc->crc_len);
359 }
360
361 dump_verify_buffers(hdr, vc);
362}
363
364/*
365 * Return data area 'header_num'
366 */
367static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
368{
369 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(vc->td, hdr);
370}
371
372static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
373{
374 struct thread_data *td = vc->td;
375 struct io_u *io_u = vc->io_u;
376 char *buf, *pattern;
377 unsigned int header_size = __hdr_size(td->o.verify);
378 unsigned int len, mod, i, pattern_size;
379 int rc;
380
381 pattern = td->o.verify_pattern;
382 pattern_size = td->o.verify_pattern_bytes;
383 assert(pattern_size != 0);
384
385 (void)paste_format_inplace(pattern, pattern_size,
386 td->o.verify_fmt, td->o.verify_fmt_sz, io_u);
387
388 buf = (char *) hdr + header_size;
389 len = get_hdr_inc(td, io_u) - header_size;
390 mod = (get_hdr_inc(td, io_u) * vc->hdr_num + header_size) % pattern_size;
391
392 rc = cmp_pattern(pattern, pattern_size, mod, buf, len);
393 if (!rc)
394 return 0;
395
396 /* Slow path, compare each byte */
397 for (i = 0; i < len; i++) {
398 if (buf[i] != pattern[mod]) {
399 unsigned int bits;
400
401 bits = hweight8(buf[i] ^ pattern[mod]);
402 log_err("fio: got pattern '%02x', wanted '%02x'. Bad bits %d\n",
403 (unsigned char)buf[i],
404 (unsigned char)pattern[mod],
405 bits);
406 log_err("fio: bad pattern block offset %u\n", i);
407 vc->name = "pattern";
408 log_verify_failure(hdr, vc);
409 return EILSEQ;
410 }
411 mod++;
412 if (mod == td->o.verify_pattern_bytes)
413 mod = 0;
414 }
415
416 /* Unreachable line */
417 assert(0);
418 return EILSEQ;
419}
420
421static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
422{
423 void *p = io_u_verify_off(hdr, vc);
424 struct vhdr_xxhash *vh = hdr_priv(hdr);
425 uint32_t hash;
426 void *state;
427
428 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
429
430 state = XXH32_init(1);
431 XXH32_update(state, p, hdr->len - hdr_size(vc->td, hdr));
432 hash = XXH32_digest(state);
433
434 if (vh->hash == hash)
435 return 0;
436
437 vc->name = "xxhash";
438 vc->good_crc = &vh->hash;
439 vc->bad_crc = &hash;
440 vc->crc_len = sizeof(hash);
441 log_verify_failure(hdr, vc);
442 return EILSEQ;
443}
444
445static int verify_io_u_sha3(struct verify_header *hdr, struct vcont *vc,
446 struct fio_sha3_ctx *sha3_ctx, uint8_t *sha,
447 unsigned int sha_size, const char *name)
448{
449 void *p = io_u_verify_off(hdr, vc);
450
451 dprint(FD_VERIFY, "%s verify io_u %p, len %u\n", name, vc->io_u, hdr->len);
452
453 fio_sha3_update(sha3_ctx, p, hdr->len - hdr_size(vc->td, hdr));
454 fio_sha3_final(sha3_ctx);
455
456 if (!memcmp(sha, sha3_ctx->sha, sha_size))
457 return 0;
458
459 vc->name = name;
460 vc->good_crc = sha;
461 vc->bad_crc = sha3_ctx->sha;
462 vc->crc_len = sha_size;
463 log_verify_failure(hdr, vc);
464 return EILSEQ;
465}
466
467static int verify_io_u_sha3_224(struct verify_header *hdr, struct vcont *vc)
468{
469 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
470 uint8_t sha[SHA3_224_DIGEST_SIZE];
471 struct fio_sha3_ctx sha3_ctx = {
472 .sha = sha,
473 };
474
475 fio_sha3_224_init(&sha3_ctx);
476
477 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
478 SHA3_224_DIGEST_SIZE, "sha3-224");
479}
480
481static int verify_io_u_sha3_256(struct verify_header *hdr, struct vcont *vc)
482{
483 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
484 uint8_t sha[SHA3_256_DIGEST_SIZE];
485 struct fio_sha3_ctx sha3_ctx = {
486 .sha = sha,
487 };
488
489 fio_sha3_256_init(&sha3_ctx);
490
491 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
492 SHA3_256_DIGEST_SIZE, "sha3-256");
493}
494
495static int verify_io_u_sha3_384(struct verify_header *hdr, struct vcont *vc)
496{
497 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
498 uint8_t sha[SHA3_384_DIGEST_SIZE];
499 struct fio_sha3_ctx sha3_ctx = {
500 .sha = sha,
501 };
502
503 fio_sha3_384_init(&sha3_ctx);
504
505 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
506 SHA3_384_DIGEST_SIZE, "sha3-384");
507}
508
509static int verify_io_u_sha3_512(struct verify_header *hdr, struct vcont *vc)
510{
511 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
512 uint8_t sha[SHA3_512_DIGEST_SIZE];
513 struct fio_sha3_ctx sha3_ctx = {
514 .sha = sha,
515 };
516
517 fio_sha3_512_init(&sha3_ctx);
518
519 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
520 SHA3_512_DIGEST_SIZE, "sha3-512");
521}
522
523static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
524{
525 void *p = io_u_verify_off(hdr, vc);
526 struct vhdr_sha512 *vh = hdr_priv(hdr);
527 uint8_t sha512[128];
528 struct fio_sha512_ctx sha512_ctx = {
529 .buf = sha512,
530 };
531
532 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
533
534 fio_sha512_init(&sha512_ctx);
535 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(vc->td, hdr));
536
537 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
538 return 0;
539
540 vc->name = "sha512";
541 vc->good_crc = vh->sha512;
542 vc->bad_crc = sha512_ctx.buf;
543 vc->crc_len = sizeof(vh->sha512);
544 log_verify_failure(hdr, vc);
545 return EILSEQ;
546}
547
548static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
549{
550 void *p = io_u_verify_off(hdr, vc);
551 struct vhdr_sha256 *vh = hdr_priv(hdr);
552 uint8_t sha256[64];
553 struct fio_sha256_ctx sha256_ctx = {
554 .buf = sha256,
555 };
556
557 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
558
559 fio_sha256_init(&sha256_ctx);
560 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(vc->td, hdr));
561 fio_sha256_final(&sha256_ctx);
562
563 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
564 return 0;
565
566 vc->name = "sha256";
567 vc->good_crc = vh->sha256;
568 vc->bad_crc = sha256_ctx.buf;
569 vc->crc_len = sizeof(vh->sha256);
570 log_verify_failure(hdr, vc);
571 return EILSEQ;
572}
573
574static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
575{
576 void *p = io_u_verify_off(hdr, vc);
577 struct vhdr_sha1 *vh = hdr_priv(hdr);
578 uint32_t sha1[5];
579 struct fio_sha1_ctx sha1_ctx = {
580 .H = sha1,
581 };
582
583 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
584
585 fio_sha1_init(&sha1_ctx);
586 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(vc->td, hdr));
587 fio_sha1_final(&sha1_ctx);
588
589 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
590 return 0;
591
592 vc->name = "sha1";
593 vc->good_crc = vh->sha1;
594 vc->bad_crc = sha1_ctx.H;
595 vc->crc_len = sizeof(vh->sha1);
596 log_verify_failure(hdr, vc);
597 return EILSEQ;
598}
599
600static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
601{
602 void *p = io_u_verify_off(hdr, vc);
603 struct vhdr_crc7 *vh = hdr_priv(hdr);
604 unsigned char c;
605
606 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
607
608 c = fio_crc7(p, hdr->len - hdr_size(vc->td, hdr));
609
610 if (c == vh->crc7)
611 return 0;
612
613 vc->name = "crc7";
614 vc->good_crc = &vh->crc7;
615 vc->bad_crc = &c;
616 vc->crc_len = 1;
617 log_verify_failure(hdr, vc);
618 return EILSEQ;
619}
620
621static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
622{
623 void *p = io_u_verify_off(hdr, vc);
624 struct vhdr_crc16 *vh = hdr_priv(hdr);
625 unsigned short c;
626
627 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
628
629 c = fio_crc16(p, hdr->len - hdr_size(vc->td, hdr));
630
631 if (c == vh->crc16)
632 return 0;
633
634 vc->name = "crc16";
635 vc->good_crc = &vh->crc16;
636 vc->bad_crc = &c;
637 vc->crc_len = 2;
638 log_verify_failure(hdr, vc);
639 return EILSEQ;
640}
641
642static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
643{
644 void *p = io_u_verify_off(hdr, vc);
645 struct vhdr_crc64 *vh = hdr_priv(hdr);
646 unsigned long long c;
647
648 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
649
650 c = fio_crc64(p, hdr->len - hdr_size(vc->td, hdr));
651
652 if (c == vh->crc64)
653 return 0;
654
655 vc->name = "crc64";
656 vc->good_crc = &vh->crc64;
657 vc->bad_crc = &c;
658 vc->crc_len = 8;
659 log_verify_failure(hdr, vc);
660 return EILSEQ;
661}
662
663static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
664{
665 void *p = io_u_verify_off(hdr, vc);
666 struct vhdr_crc32 *vh = hdr_priv(hdr);
667 uint32_t c;
668
669 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
670
671 c = fio_crc32(p, hdr->len - hdr_size(vc->td, hdr));
672
673 if (c == vh->crc32)
674 return 0;
675
676 vc->name = "crc32";
677 vc->good_crc = &vh->crc32;
678 vc->bad_crc = &c;
679 vc->crc_len = 4;
680 log_verify_failure(hdr, vc);
681 return EILSEQ;
682}
683
684static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
685{
686 void *p = io_u_verify_off(hdr, vc);
687 struct vhdr_crc32 *vh = hdr_priv(hdr);
688 uint32_t c;
689
690 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
691
692 c = fio_crc32c(p, hdr->len - hdr_size(vc->td, hdr));
693
694 if (c == vh->crc32)
695 return 0;
696
697 vc->name = "crc32c";
698 vc->good_crc = &vh->crc32;
699 vc->bad_crc = &c;
700 vc->crc_len = 4;
701 log_verify_failure(hdr, vc);
702 return EILSEQ;
703}
704
705static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
706{
707 void *p = io_u_verify_off(hdr, vc);
708 struct vhdr_md5 *vh = hdr_priv(hdr);
709 uint32_t hash[MD5_HASH_WORDS];
710 struct fio_md5_ctx md5_ctx = {
711 .hash = hash,
712 };
713
714 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
715
716 fio_md5_init(&md5_ctx);
717 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(vc->td, hdr));
718 fio_md5_final(&md5_ctx);
719
720 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
721 return 0;
722
723 vc->name = "md5";
724 vc->good_crc = vh->md5_digest;
725 vc->bad_crc = md5_ctx.hash;
726 vc->crc_len = sizeof(hash);
727 log_verify_failure(hdr, vc);
728 return EILSEQ;
729}
730
731/*
732 * Push IO verification to a separate thread
733 */
734int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
735{
736 struct io_u *io_u = *io_u_ptr;
737
738 pthread_mutex_lock(&td->io_u_lock);
739
740 if (io_u->file)
741 put_file_log(td, io_u->file);
742
743 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
744 td->cur_depth--;
745 io_u_clear(td, io_u, IO_U_F_IN_CUR_DEPTH);
746 }
747 flist_add_tail(&io_u->verify_list, &td->verify_list);
748 *io_u_ptr = NULL;
749
750 pthread_cond_signal(&td->verify_cond);
751 pthread_mutex_unlock(&td->io_u_lock);
752 return 0;
753}
754
755/*
756 * Thanks Rusty, for spending the time so I don't have to.
757 *
758 * http://rusty.ozlabs.org/?p=560
759 */
760static int mem_is_zero(const void *data, size_t length)
761{
762 const unsigned char *p = data;
763 size_t len;
764
765 /* Check first 16 bytes manually */
766 for (len = 0; len < 16; len++) {
767 if (!length)
768 return 1;
769 if (*p)
770 return 0;
771 p++;
772 length--;
773 }
774
775 /* Now we know that's zero, memcmp with self. */
776 return memcmp(data, p, length) == 0;
777}
778
779static int mem_is_zero_slow(const void *data, size_t length, size_t *offset)
780{
781 const unsigned char *p = data;
782
783 *offset = 0;
784 while (length) {
785 if (*p)
786 break;
787 (*offset)++;
788 length--;
789 p++;
790 }
791
792 return !length;
793}
794
795static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
796{
797 size_t offset;
798
799 if (!td->o.trim_zero)
800 return 0;
801
802 if (mem_is_zero(io_u->buf, io_u->buflen))
803 return 0;
804
805 mem_is_zero_slow(io_u->buf, io_u->buflen, &offset);
806
807 log_err("trim: verify failed at file %s offset %llu, length %llu"
808 ", block offset %lu\n",
809 io_u->file->file_name, io_u->offset, io_u->buflen,
810 (unsigned long) offset);
811 return EILSEQ;
812}
813
814static int verify_header(struct io_u *io_u, struct thread_data *td,
815 struct verify_header *hdr, unsigned int hdr_num,
816 unsigned int hdr_len)
817{
818 void *p = hdr;
819 uint32_t crc;
820
821 if (hdr->magic != FIO_HDR_MAGIC) {
822 log_err("verify: bad magic header %x, wanted %x",
823 hdr->magic, FIO_HDR_MAGIC);
824 goto err;
825 }
826 if (hdr->len != hdr_len) {
827 log_err("verify: bad header length %u, wanted %u",
828 hdr->len, hdr_len);
829 goto err;
830 }
831 if (hdr->rand_seed != io_u->rand_seed) {
832 log_err("verify: bad header rand_seed %"PRIu64
833 ", wanted %"PRIu64,
834 hdr->rand_seed, io_u->rand_seed);
835 goto err;
836 }
837 if (hdr->offset != io_u->offset + hdr_num * td->o.verify_interval) {
838 log_err("verify: bad header offset %"PRIu64
839 ", wanted %llu",
840 hdr->offset, io_u->offset);
841 goto err;
842 }
843
844 /*
845 * For read-only workloads, the program cannot be certain of the
846 * last numberio written to a block. Checking of numberio will be
847 * done only for workloads that write data. For verify_only,
848 * numberio will be checked in the last iteration when the correct
849 * state of numberio, that would have been written to each block
850 * in a previous run of fio, has been reached.
851 */
852 if (td_write(td) && (td_min_bs(td) == td_max_bs(td)) &&
853 !td->o.time_based)
854 if (!td->o.verify_only || td->o.loops == 0)
855 if (hdr->numberio != io_u->numberio) {
856 log_err("verify: bad header numberio %"PRIu16
857 ", wanted %"PRIu16,
858 hdr->numberio, io_u->numberio);
859 goto err;
860 }
861
862 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
863 if (crc != hdr->crc32) {
864 log_err("verify: bad header crc %x, calculated %x",
865 hdr->crc32, crc);
866 goto err;
867 }
868 return 0;
869
870err:
871 log_err(" at file %s offset %llu, length %u"
872 " (requested block: offset=%llu, length=%llu)\n",
873 io_u->file->file_name,
874 io_u->offset + hdr_num * hdr_len, hdr_len,
875 io_u->offset, io_u->buflen);
876
877 if (td->o.verify_dump)
878 dump_buf(p, hdr_len, io_u->offset + hdr_num * hdr_len,
879 "hdr_fail", io_u->file);
880
881 return EILSEQ;
882}
883
884int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
885{
886 struct verify_header *hdr;
887 struct io_u *io_u = *io_u_ptr;
888 unsigned int header_size, hdr_inc, hdr_num = 0;
889 void *p;
890 int ret;
891
892 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
893 return 0;
894 /*
895 * If the IO engine is faking IO (like null), then just pretend
896 * we verified everything.
897 */
898 if (td_ioengine_flagged(td, FIO_FAKEIO))
899 return 0;
900
901 if (io_u->flags & IO_U_F_TRIMMED) {
902 ret = verify_trimmed_io_u(td, io_u);
903 goto done;
904 }
905
906 hdr_inc = get_hdr_inc(td, io_u);
907
908 ret = 0;
909 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
910 p += hdr_inc, hdr_num++) {
911 struct vcont vc = {
912 .io_u = io_u,
913 .hdr_num = hdr_num,
914 .td = td,
915 };
916 unsigned int verify_type;
917
918 if (ret && td->o.verify_fatal)
919 break;
920
921 header_size = __hdr_size(td->o.verify);
922 if (td->o.verify_offset)
923 memswp(p, p + td->o.verify_offset, header_size);
924 hdr = p;
925
926 /*
927 * Make rand_seed check pass when have verify_backlog.
928 */
929 if (!td_rw(td) || (td->flags & TD_F_VER_BACKLOG))
930 io_u->rand_seed = hdr->rand_seed;
931
932 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
933 ret = verify_header(io_u, td, hdr, hdr_num, hdr_inc);
934 if (ret)
935 return ret;
936 }
937
938 if (td->o.verify != VERIFY_NONE)
939 verify_type = td->o.verify;
940 else
941 verify_type = hdr->verify_type;
942
943 switch (verify_type) {
944 case VERIFY_HDR_ONLY:
945 /* Header is always verified, check if pattern is left
946 * for verification. */
947 if (td->o.verify_pattern_bytes)
948 ret = verify_io_u_pattern(hdr, &vc);
949 break;
950 case VERIFY_MD5:
951 ret = verify_io_u_md5(hdr, &vc);
952 break;
953 case VERIFY_CRC64:
954 ret = verify_io_u_crc64(hdr, &vc);
955 break;
956 case VERIFY_CRC32C:
957 case VERIFY_CRC32C_INTEL:
958 ret = verify_io_u_crc32c(hdr, &vc);
959 break;
960 case VERIFY_CRC32:
961 ret = verify_io_u_crc32(hdr, &vc);
962 break;
963 case VERIFY_CRC16:
964 ret = verify_io_u_crc16(hdr, &vc);
965 break;
966 case VERIFY_CRC7:
967 ret = verify_io_u_crc7(hdr, &vc);
968 break;
969 case VERIFY_SHA256:
970 ret = verify_io_u_sha256(hdr, &vc);
971 break;
972 case VERIFY_SHA512:
973 ret = verify_io_u_sha512(hdr, &vc);
974 break;
975 case VERIFY_SHA3_224:
976 ret = verify_io_u_sha3_224(hdr, &vc);
977 break;
978 case VERIFY_SHA3_256:
979 ret = verify_io_u_sha3_256(hdr, &vc);
980 break;
981 case VERIFY_SHA3_384:
982 ret = verify_io_u_sha3_384(hdr, &vc);
983 break;
984 case VERIFY_SHA3_512:
985 ret = verify_io_u_sha3_512(hdr, &vc);
986 break;
987 case VERIFY_XXHASH:
988 ret = verify_io_u_xxhash(hdr, &vc);
989 break;
990 case VERIFY_SHA1:
991 ret = verify_io_u_sha1(hdr, &vc);
992 break;
993 case VERIFY_PATTERN:
994 case VERIFY_PATTERN_NO_HDR:
995 ret = verify_io_u_pattern(hdr, &vc);
996 break;
997 default:
998 log_err("Bad verify type %u\n", hdr->verify_type);
999 ret = EINVAL;
1000 }
1001
1002 if (ret && verify_type != hdr->verify_type)
1003 log_err("fio: verify type mismatch (%u media, %u given)\n",
1004 hdr->verify_type, verify_type);
1005 }
1006
1007done:
1008 if (ret && td->o.verify_fatal)
1009 fio_mark_td_terminate(td);
1010
1011 return ret;
1012}
1013
1014static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
1015{
1016 struct vhdr_xxhash *vh = hdr_priv(hdr);
1017 void *state;
1018
1019 state = XXH32_init(1);
1020 XXH32_update(state, p, len);
1021 vh->hash = XXH32_digest(state);
1022}
1023
1024static void fill_sha3(struct fio_sha3_ctx *sha3_ctx, void *p, unsigned int len)
1025{
1026 fio_sha3_update(sha3_ctx, p, len);
1027 fio_sha3_final(sha3_ctx);
1028}
1029
1030static void fill_sha3_224(struct verify_header *hdr, void *p, unsigned int len)
1031{
1032 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
1033 struct fio_sha3_ctx sha3_ctx = {
1034 .sha = vh->sha,
1035 };
1036
1037 fio_sha3_224_init(&sha3_ctx);
1038 fill_sha3(&sha3_ctx, p, len);
1039}
1040
1041static void fill_sha3_256(struct verify_header *hdr, void *p, unsigned int len)
1042{
1043 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
1044 struct fio_sha3_ctx sha3_ctx = {
1045 .sha = vh->sha,
1046 };
1047
1048 fio_sha3_256_init(&sha3_ctx);
1049 fill_sha3(&sha3_ctx, p, len);
1050}
1051
1052static void fill_sha3_384(struct verify_header *hdr, void *p, unsigned int len)
1053{
1054 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
1055 struct fio_sha3_ctx sha3_ctx = {
1056 .sha = vh->sha,
1057 };
1058
1059 fio_sha3_384_init(&sha3_ctx);
1060 fill_sha3(&sha3_ctx, p, len);
1061}
1062
1063static void fill_sha3_512(struct verify_header *hdr, void *p, unsigned int len)
1064{
1065 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
1066 struct fio_sha3_ctx sha3_ctx = {
1067 .sha = vh->sha,
1068 };
1069
1070 fio_sha3_512_init(&sha3_ctx);
1071 fill_sha3(&sha3_ctx, p, len);
1072}
1073
1074static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
1075{
1076 struct vhdr_sha512 *vh = hdr_priv(hdr);
1077 struct fio_sha512_ctx sha512_ctx = {
1078 .buf = vh->sha512,
1079 };
1080
1081 fio_sha512_init(&sha512_ctx);
1082 fio_sha512_update(&sha512_ctx, p, len);
1083}
1084
1085static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
1086{
1087 struct vhdr_sha256 *vh = hdr_priv(hdr);
1088 struct fio_sha256_ctx sha256_ctx = {
1089 .buf = vh->sha256,
1090 };
1091
1092 fio_sha256_init(&sha256_ctx);
1093 fio_sha256_update(&sha256_ctx, p, len);
1094 fio_sha256_final(&sha256_ctx);
1095}
1096
1097static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
1098{
1099 struct vhdr_sha1 *vh = hdr_priv(hdr);
1100 struct fio_sha1_ctx sha1_ctx = {
1101 .H = vh->sha1,
1102 };
1103
1104 fio_sha1_init(&sha1_ctx);
1105 fio_sha1_update(&sha1_ctx, p, len);
1106 fio_sha1_final(&sha1_ctx);
1107}
1108
1109static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
1110{
1111 struct vhdr_crc7 *vh = hdr_priv(hdr);
1112
1113 vh->crc7 = fio_crc7(p, len);
1114}
1115
1116static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
1117{
1118 struct vhdr_crc16 *vh = hdr_priv(hdr);
1119
1120 vh->crc16 = fio_crc16(p, len);
1121}
1122
1123static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
1124{
1125 struct vhdr_crc32 *vh = hdr_priv(hdr);
1126
1127 vh->crc32 = fio_crc32(p, len);
1128}
1129
1130static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
1131{
1132 struct vhdr_crc32 *vh = hdr_priv(hdr);
1133
1134 vh->crc32 = fio_crc32c(p, len);
1135}
1136
1137static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
1138{
1139 struct vhdr_crc64 *vh = hdr_priv(hdr);
1140
1141 vh->crc64 = fio_crc64(p, len);
1142}
1143
1144static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
1145{
1146 struct vhdr_md5 *vh = hdr_priv(hdr);
1147 struct fio_md5_ctx md5_ctx = {
1148 .hash = (uint32_t *) vh->md5_digest,
1149 };
1150
1151 fio_md5_init(&md5_ctx);
1152 fio_md5_update(&md5_ctx, p, len);
1153 fio_md5_final(&md5_ctx);
1154}
1155
1156static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
1157 struct verify_header *hdr, unsigned int header_num,
1158 unsigned int header_len, uint64_t rand_seed)
1159{
1160 void *p = hdr;
1161
1162 hdr->magic = FIO_HDR_MAGIC;
1163 hdr->verify_type = td->o.verify;
1164 hdr->len = header_len;
1165 hdr->rand_seed = rand_seed;
1166 hdr->offset = io_u->offset + header_num * td->o.verify_interval;
1167 hdr->time_sec = io_u->start_time.tv_sec;
1168 hdr->time_nsec = io_u->start_time.tv_nsec;
1169 hdr->thread = td->thread_number;
1170 hdr->numberio = io_u->numberio;
1171 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
1172}
1173
1174
1175static void fill_hdr(struct thread_data *td, struct io_u *io_u,
1176 struct verify_header *hdr, unsigned int header_num,
1177 unsigned int header_len, uint64_t rand_seed)
1178{
1179 if (td->o.verify != VERIFY_PATTERN_NO_HDR)
1180 __fill_hdr(td, io_u, hdr, header_num, header_len, rand_seed);
1181}
1182
1183static void populate_hdr(struct thread_data *td, struct io_u *io_u,
1184 struct verify_header *hdr, unsigned int header_num,
1185 unsigned int header_len)
1186{
1187 unsigned int data_len;
1188 void *data;
1189 char *p;
1190
1191 p = (char *) hdr;
1192
1193 fill_hdr(td, io_u, hdr, header_num, header_len, io_u->rand_seed);
1194
1195 if (header_len <= hdr_size(td, hdr)) {
1196 td_verror(td, EINVAL, "Blocksize too small");
1197 return;
1198 }
1199 data_len = header_len - hdr_size(td, hdr);
1200
1201 data = p + hdr_size(td, hdr);
1202 switch (td->o.verify) {
1203 case VERIFY_MD5:
1204 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
1205 io_u, hdr->len);
1206 fill_md5(hdr, data, data_len);
1207 break;
1208 case VERIFY_CRC64:
1209 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
1210 io_u, hdr->len);
1211 fill_crc64(hdr, data, data_len);
1212 break;
1213 case VERIFY_CRC32C:
1214 case VERIFY_CRC32C_INTEL:
1215 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1216 io_u, hdr->len);
1217 fill_crc32c(hdr, data, data_len);
1218 break;
1219 case VERIFY_CRC32:
1220 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1221 io_u, hdr->len);
1222 fill_crc32(hdr, data, data_len);
1223 break;
1224 case VERIFY_CRC16:
1225 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1226 io_u, hdr->len);
1227 fill_crc16(hdr, data, data_len);
1228 break;
1229 case VERIFY_CRC7:
1230 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1231 io_u, hdr->len);
1232 fill_crc7(hdr, data, data_len);
1233 break;
1234 case VERIFY_SHA256:
1235 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1236 io_u, hdr->len);
1237 fill_sha256(hdr, data, data_len);
1238 break;
1239 case VERIFY_SHA512:
1240 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1241 io_u, hdr->len);
1242 fill_sha512(hdr, data, data_len);
1243 break;
1244 case VERIFY_SHA3_224:
1245 dprint(FD_VERIFY, "fill sha3-224 io_u %p, len %u\n",
1246 io_u, hdr->len);
1247 fill_sha3_224(hdr, data, data_len);
1248 break;
1249 case VERIFY_SHA3_256:
1250 dprint(FD_VERIFY, "fill sha3-256 io_u %p, len %u\n",
1251 io_u, hdr->len);
1252 fill_sha3_256(hdr, data, data_len);
1253 break;
1254 case VERIFY_SHA3_384:
1255 dprint(FD_VERIFY, "fill sha3-384 io_u %p, len %u\n",
1256 io_u, hdr->len);
1257 fill_sha3_384(hdr, data, data_len);
1258 break;
1259 case VERIFY_SHA3_512:
1260 dprint(FD_VERIFY, "fill sha3-512 io_u %p, len %u\n",
1261 io_u, hdr->len);
1262 fill_sha3_512(hdr, data, data_len);
1263 break;
1264 case VERIFY_XXHASH:
1265 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1266 io_u, hdr->len);
1267 fill_xxhash(hdr, data, data_len);
1268 break;
1269 case VERIFY_SHA1:
1270 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1271 io_u, hdr->len);
1272 fill_sha1(hdr, data, data_len);
1273 break;
1274 case VERIFY_HDR_ONLY:
1275 case VERIFY_PATTERN:
1276 case VERIFY_PATTERN_NO_HDR:
1277 /* nothing to do here */
1278 break;
1279 default:
1280 log_err("fio: bad verify type: %d\n", td->o.verify);
1281 assert(0);
1282 }
1283
1284 if (td->o.verify_offset && hdr_size(td, hdr))
1285 memswp(p, p + td->o.verify_offset, hdr_size(td, hdr));
1286}
1287
1288/*
1289 * fill body of io_u->buf with random data and add a header with the
1290 * checksum of choice
1291 */
1292void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1293{
1294 if (td->o.verify == VERIFY_NULL)
1295 return;
1296
1297 io_u->numberio = td->io_issues[io_u->ddir];
1298
1299 fill_pattern_headers(td, io_u, 0, 0);
1300}
1301
1302int get_next_verify(struct thread_data *td, struct io_u *io_u)
1303{
1304 struct io_piece *ipo = NULL;
1305
1306 /*
1307 * this io_u is from a requeue, we already filled the offsets
1308 */
1309 if (io_u->file)
1310 return 0;
1311
1312 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1313 struct fio_rb_node *n = rb_first(&td->io_hist_tree);
1314
1315 ipo = rb_entry(n, struct io_piece, rb_node);
1316
1317 /*
1318 * Ensure that the associated IO has completed
1319 */
1320 read_barrier();
1321 if (ipo->flags & IP_F_IN_FLIGHT)
1322 goto nothing;
1323
1324 rb_erase(n, &td->io_hist_tree);
1325 assert(ipo->flags & IP_F_ONRB);
1326 ipo->flags &= ~IP_F_ONRB;
1327 } else if (!flist_empty(&td->io_hist_list)) {
1328 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1329
1330 /*
1331 * Ensure that the associated IO has completed
1332 */
1333 read_barrier();
1334 if (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->buflen = ipo->len;
1347 io_u->numberio = ipo->numberio;
1348 io_u->file = ipo->file;
1349 io_u_set(td, io_u, IO_U_F_VER_LIST);
1350
1351 if (ipo->flags & IP_F_TRIMMED)
1352 io_u_set(td, io_u, IO_U_F_TRIMMED);
1353
1354 if (!fio_file_open(io_u->file)) {
1355 int r = td_io_open_file(td, io_u->file);
1356
1357 if (r) {
1358 dprint(FD_VERIFY, "failed file %s open\n",
1359 io_u->file->file_name);
1360 return 1;
1361 }
1362 }
1363
1364 get_file(ipo->file);
1365 assert(fio_file_open(io_u->file));
1366 io_u->ddir = DDIR_READ;
1367 io_u->xfer_buf = io_u->buf;
1368 io_u->xfer_buflen = io_u->buflen;
1369
1370 remove_trim_entry(td, ipo);
1371 free(ipo);
1372 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1373
1374 if (!td->o.verify_pattern_bytes) {
1375 io_u->rand_seed = __rand(&td->verify_state);
1376 if (sizeof(int) != sizeof(long *))
1377 io_u->rand_seed *= __rand(&td->verify_state);
1378 }
1379 return 0;
1380 }
1381
1382nothing:
1383 dprint(FD_VERIFY, "get_next_verify: empty\n");
1384 return 1;
1385}
1386
1387void fio_verify_init(struct thread_data *td)
1388{
1389 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1390 td->o.verify == VERIFY_CRC32C) {
1391 crc32c_arm64_probe();
1392 crc32c_intel_probe();
1393 }
1394}
1395
1396static void *verify_async_thread(void *data)
1397{
1398 struct thread_data *td = data;
1399 struct io_u *io_u;
1400 int ret = 0;
1401
1402 if (fio_option_is_set(&td->o, verify_cpumask) &&
1403 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1404 log_err("fio: failed setting verify thread affinity\n");
1405 goto done;
1406 }
1407
1408 do {
1409 FLIST_HEAD(list);
1410
1411 read_barrier();
1412 if (td->verify_thread_exit)
1413 break;
1414
1415 pthread_mutex_lock(&td->io_u_lock);
1416
1417 while (flist_empty(&td->verify_list) &&
1418 !td->verify_thread_exit) {
1419 ret = pthread_cond_wait(&td->verify_cond,
1420 &td->io_u_lock);
1421 if (ret) {
1422 pthread_mutex_unlock(&td->io_u_lock);
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 struct thread_data *td;
1581 size_t depth;
1582 void *next;
1583 int i, nr;
1584
1585 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1586
1587 /*
1588 * Calculate reply space needed. We need one 'io_state' per thread,
1589 * and the size will vary depending on depth.
1590 */
1591 depth = 0;
1592 nr = 0;
1593 for_each_td(td, i) {
1594 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1595 continue;
1596 td->stop_io = 1;
1597 td->flags |= TD_F_VSTATE_SAVED;
1598 depth += (td->o.iodepth * td->o.nr_files);
1599 nr++;
1600 }
1601
1602 if (!nr)
1603 return NULL;
1604
1605 *sz = sizeof(*rep);
1606 *sz += nr * sizeof(struct thread_io_list);
1607 *sz += depth * sizeof(struct file_comp);
1608 rep = malloc(*sz);
1609 memset(rep, 0, *sz);
1610
1611 rep->threads = cpu_to_le64((uint64_t) nr);
1612
1613 next = &rep->state[0];
1614 for_each_td(td, i) {
1615 struct thread_io_list *s = next;
1616 unsigned int comps, index = 0;
1617
1618 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1619 continue;
1620
1621 comps = fill_file_completions(td, s, &index);
1622
1623 s->no_comps = cpu_to_le64((uint64_t) comps);
1624 s->depth = cpu_to_le64((uint64_t) td->o.iodepth);
1625 s->nofiles = cpu_to_le64((uint64_t) td->o.nr_files);
1626 s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]);
1627 s->index = cpu_to_le64((uint64_t) i);
1628 if (td->random_state.use64) {
1629 s->rand.state64.s[0] = cpu_to_le64(td->random_state.state64.s1);
1630 s->rand.state64.s[1] = cpu_to_le64(td->random_state.state64.s2);
1631 s->rand.state64.s[2] = cpu_to_le64(td->random_state.state64.s3);
1632 s->rand.state64.s[3] = cpu_to_le64(td->random_state.state64.s4);
1633 s->rand.state64.s[4] = cpu_to_le64(td->random_state.state64.s5);
1634 s->rand.state64.s[5] = 0;
1635 s->rand.use64 = cpu_to_le64((uint64_t)1);
1636 } else {
1637 s->rand.state32.s[0] = cpu_to_le32(td->random_state.state32.s1);
1638 s->rand.state32.s[1] = cpu_to_le32(td->random_state.state32.s2);
1639 s->rand.state32.s[2] = cpu_to_le32(td->random_state.state32.s3);
1640 s->rand.state32.s[3] = 0;
1641 s->rand.use64 = 0;
1642 }
1643 snprintf((char *) s->name, sizeof(s->name), "%s", td->o.name);
1644 next = io_list_next(s);
1645 }
1646
1647 return rep;
1648}
1649
1650static int open_state_file(const char *name, const char *prefix, int num,
1651 int for_write)
1652{
1653 char out[PATH_MAX];
1654 int flags;
1655 int fd;
1656
1657 if (for_write)
1658 flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC;
1659 else
1660 flags = O_RDONLY;
1661
1662 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1663
1664 fd = open(out, flags, 0644);
1665 if (fd == -1) {
1666 perror("fio: open state file");
1667 log_err("fio: state file: %s (for_write=%d)\n", out, for_write);
1668 return -1;
1669 }
1670
1671 return fd;
1672}
1673
1674static int write_thread_list_state(struct thread_io_list *s,
1675 const char *prefix)
1676{
1677 struct verify_state_hdr hdr;
1678 uint64_t crc;
1679 ssize_t ret;
1680 int fd;
1681
1682 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1683 if (fd == -1)
1684 return 1;
1685
1686 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1687
1688 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1689 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1690 hdr.crc = cpu_to_le64(crc);
1691 ret = write(fd, &hdr, sizeof(hdr));
1692 if (ret != sizeof(hdr))
1693 goto write_fail;
1694
1695 ret = write(fd, s, thread_io_list_sz(s));
1696 if (ret != thread_io_list_sz(s)) {
1697write_fail:
1698 if (ret < 0)
1699 perror("fio: write state file");
1700 log_err("fio: failed to write state file\n");
1701 ret = 1;
1702 } else
1703 ret = 0;
1704
1705 close(fd);
1706 return ret;
1707}
1708
1709void __verify_save_state(struct all_io_list *state, const char *prefix)
1710{
1711 struct thread_io_list *s = &state->state[0];
1712 unsigned int i;
1713
1714 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1715 write_thread_list_state(s, prefix);
1716 s = io_list_next(s);
1717 }
1718}
1719
1720void verify_save_state(int mask)
1721{
1722 struct all_io_list *state;
1723 size_t sz;
1724
1725 state = get_all_io_list(mask, &sz);
1726 if (state) {
1727 char prefix[PATH_MAX];
1728
1729 if (aux_path)
1730 sprintf(prefix, "%s%clocal", aux_path, FIO_OS_PATH_SEPARATOR);
1731 else
1732 strcpy(prefix, "local");
1733
1734 __verify_save_state(state, prefix);
1735 free(state);
1736 }
1737}
1738
1739void verify_free_state(struct thread_data *td)
1740{
1741 if (td->vstate)
1742 free(td->vstate);
1743}
1744
1745void verify_assign_state(struct thread_data *td, void *p)
1746{
1747 struct thread_io_list *s = p;
1748 int i;
1749
1750 s->no_comps = le64_to_cpu(s->no_comps);
1751 s->depth = le32_to_cpu(s->depth);
1752 s->nofiles = le32_to_cpu(s->nofiles);
1753 s->numberio = le64_to_cpu(s->numberio);
1754 s->rand.use64 = le64_to_cpu(s->rand.use64);
1755
1756 if (s->rand.use64) {
1757 for (i = 0; i < 6; i++)
1758 s->rand.state64.s[i] = le64_to_cpu(s->rand.state64.s[i]);
1759 } else {
1760 for (i = 0; i < 4; i++)
1761 s->rand.state32.s[i] = le32_to_cpu(s->rand.state32.s[i]);
1762 }
1763
1764 for (i = 0; i < s->no_comps; i++) {
1765 s->comps[i].fileno = le64_to_cpu(s->comps[i].fileno);
1766 s->comps[i].offset = le64_to_cpu(s->comps[i].offset);
1767 }
1768
1769 td->vstate = p;
1770}
1771
1772int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s)
1773{
1774 uint64_t crc;
1775
1776 hdr->version = le64_to_cpu(hdr->version);
1777 hdr->size = le64_to_cpu(hdr->size);
1778 hdr->crc = le64_to_cpu(hdr->crc);
1779
1780 if (hdr->version != VSTATE_HDR_VERSION)
1781 return 1;
1782
1783 crc = fio_crc32c((void *)s, hdr->size);
1784 if (crc != hdr->crc)
1785 return 1;
1786
1787 return 0;
1788}
1789
1790int verify_load_state(struct thread_data *td, const char *prefix)
1791{
1792 struct verify_state_hdr hdr;
1793 void *s = NULL;
1794 uint64_t crc;
1795 ssize_t ret;
1796 int fd;
1797
1798 if (!td->o.verify_state)
1799 return 0;
1800
1801 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1802 if (fd == -1)
1803 return 1;
1804
1805 ret = read(fd, &hdr, sizeof(hdr));
1806 if (ret != sizeof(hdr)) {
1807 if (ret < 0)
1808 td_verror(td, errno, "read verify state hdr");
1809 log_err("fio: failed reading verify state header\n");
1810 goto err;
1811 }
1812
1813 hdr.version = le64_to_cpu(hdr.version);
1814 hdr.size = le64_to_cpu(hdr.size);
1815 hdr.crc = le64_to_cpu(hdr.crc);
1816
1817 if (hdr.version != VSTATE_HDR_VERSION) {
1818 log_err("fio: unsupported (%d) version in verify state header\n",
1819 (unsigned int) hdr.version);
1820 goto err;
1821 }
1822
1823 s = malloc(hdr.size);
1824 ret = read(fd, s, hdr.size);
1825 if (ret != hdr.size) {
1826 if (ret < 0)
1827 td_verror(td, errno, "read verify state");
1828 log_err("fio: failed reading verity state\n");
1829 goto err;
1830 }
1831
1832 crc = fio_crc32c(s, hdr.size);
1833 if (crc != hdr.crc) {
1834 log_err("fio: verify state is corrupt\n");
1835 goto err;
1836 }
1837
1838 close(fd);
1839
1840 verify_assign_state(td, s);
1841 return 0;
1842err:
1843 if (s)
1844 free(s);
1845 close(fd);
1846 return 1;
1847}
1848
1849/*
1850 * Use the loaded verify state to know when to stop doing verification
1851 */
1852int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1853{
1854 struct thread_io_list *s = td->vstate;
1855 struct fio_file *f = io_u->file;
1856 int i;
1857
1858 if (!s || !f)
1859 return 0;
1860
1861 /*
1862 * If we're not into the window of issues - depth yet, continue. If
1863 * issue is shorter than depth, do check.
1864 */
1865 if ((td->io_blocks[DDIR_READ] < s->depth ||
1866 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1867 s->numberio > s->depth)
1868 return 0;
1869
1870 /*
1871 * We're in the window of having to check if this io was
1872 * completed or not. If the IO was seen as completed, then
1873 * lets verify it.
1874 */
1875 for (i = 0; i < s->no_comps; i++) {
1876 if (s->comps[i].fileno != f->fileno)
1877 continue;
1878 if (io_u->offset == s->comps[i].offset)
1879 return 0;
1880 }
1881
1882 /*
1883 * Not found, we have to stop
1884 */
1885 return 1;
1886}
fio - Flexible IO Tester