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init: fix memory leak in error handling
[fio.git] / verify.c
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CommitLineData
1/*
2 * IO verification helpers
3 */
4#include <unistd.h>
5#include <fcntl.h>
6#include <string.h>
7#include <assert.h>
8#include <pthread.h>
9#include <libgen.h>
10
11#include "fio.h"
12#include "verify.h"
13#include "trim.h"
14#include "lib/rand.h"
15#include "lib/hweight.h"
16#include "lib/pattern.h"
17
18#include "crc/md5.h"
19#include "crc/crc64.h"
20#include "crc/crc32.h"
21#include "crc/crc32c.h"
22#include "crc/crc16.h"
23#include "crc/crc7.h"
24#include "crc/sha256.h"
25#include "crc/sha512.h"
26#include "crc/sha1.h"
27#include "crc/xxhash.h"
28#include "crc/sha3.h"
29
30static void populate_hdr(struct thread_data *td, struct io_u *io_u,
31 struct verify_header *hdr, unsigned int header_num,
32 unsigned int header_len);
33static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
34 struct verify_header *hdr, unsigned int header_num,
35 unsigned int header_len, uint64_t rand_seed);
36
37void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
38{
39 (void)cpy_pattern(td->o.buffer_pattern, td->o.buffer_pattern_bytes, p, len);
40}
41
42static void __fill_buffer(struct thread_options *o, unsigned long seed, void *p,
43 unsigned int len)
44{
45 __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
46}
47
48static unsigned long fill_buffer(struct thread_data *td, void *p,
49 unsigned int len)
50{
51 struct frand_state *fs = &td->verify_state;
52 struct thread_options *o = &td->o;
53
54 return fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
55}
56
57void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
58 struct io_u *io_u, unsigned long seed, int use_seed)
59{
60 struct thread_options *o = &td->o;
61
62 if (!o->verify_pattern_bytes) {
63 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
64
65 if (use_seed)
66 __fill_buffer(o, seed, p, len);
67 else
68 io_u->rand_seed = fill_buffer(td, p, len);
69 return;
70 }
71
72 /* Skip if we were here and we do not need to patch pattern
73 * with format */
74 if (!td->o.verify_fmt_sz && io_u->buf_filled_len >= len) {
75 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
76 o->verify_pattern_bytes, len);
77 return;
78 }
79
80 (void)paste_format(td->o.verify_pattern, td->o.verify_pattern_bytes,
81 td->o.verify_fmt, td->o.verify_fmt_sz,
82 p, len, io_u);
83 io_u->buf_filled_len = len;
84}
85
86static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
87{
88 unsigned int hdr_inc;
89
90 /*
91 * If we use bs_unaligned, buflen can be larger than the verify
92 * interval (which just defaults to the smallest blocksize possible).
93 */
94 hdr_inc = io_u->buflen;
95 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen &&
96 !td->o.bs_unaligned)
97 hdr_inc = td->o.verify_interval;
98
99 return hdr_inc;
100}
101
102static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
103 unsigned long seed, int use_seed)
104{
105 unsigned int hdr_inc, header_num;
106 struct verify_header *hdr;
107 void *p = io_u->buf;
108
109 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
110
111 hdr_inc = get_hdr_inc(td, io_u);
112 header_num = 0;
113 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
114 hdr = p;
115 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
116 header_num++;
117 }
118}
119
120static void memswp(void *buf1, void *buf2, unsigned int len)
121{
122 char swap[200];
123
124 assert(len <= sizeof(swap));
125
126 memcpy(&swap, buf1, len);
127 memcpy(buf1, buf2, len);
128 memcpy(buf2, &swap, len);
129}
130
131static void hexdump(void *buffer, int len)
132{
133 unsigned char *p = buffer;
134 int i;
135
136 for (i = 0; i < len; i++)
137 log_err("%02x", p[i]);
138 log_err("\n");
139}
140
141/*
142 * Prepare for separation of verify_header and checksum header
143 */
144static inline unsigned int __hdr_size(int verify_type)
145{
146 unsigned int len = 0;
147
148 switch (verify_type) {
149 case VERIFY_NONE:
150 case VERIFY_HDR_ONLY:
151 case VERIFY_NULL:
152 case VERIFY_PATTERN:
153 len = 0;
154 break;
155 case VERIFY_MD5:
156 len = sizeof(struct vhdr_md5);
157 break;
158 case VERIFY_CRC64:
159 len = sizeof(struct vhdr_crc64);
160 break;
161 case VERIFY_CRC32C:
162 case VERIFY_CRC32:
163 case VERIFY_CRC32C_INTEL:
164 len = sizeof(struct vhdr_crc32);
165 break;
166 case VERIFY_CRC16:
167 len = sizeof(struct vhdr_crc16);
168 break;
169 case VERIFY_CRC7:
170 len = sizeof(struct vhdr_crc7);
171 break;
172 case VERIFY_SHA256:
173 len = sizeof(struct vhdr_sha256);
174 break;
175 case VERIFY_SHA512:
176 len = sizeof(struct vhdr_sha512);
177 break;
178 case VERIFY_SHA3_224:
179 len = sizeof(struct vhdr_sha3_224);
180 break;
181 case VERIFY_SHA3_256:
182 len = sizeof(struct vhdr_sha3_256);
183 break;
184 case VERIFY_SHA3_384:
185 len = sizeof(struct vhdr_sha3_384);
186 break;
187 case VERIFY_SHA3_512:
188 len = sizeof(struct vhdr_sha3_512);
189 break;
190 case VERIFY_XXHASH:
191 len = sizeof(struct vhdr_xxhash);
192 break;
193 case VERIFY_SHA1:
194 len = sizeof(struct vhdr_sha1);
195 break;
196 case VERIFY_PATTERN_NO_HDR:
197 return 0;
198 default:
199 log_err("fio: unknown verify header!\n");
200 assert(0);
201 }
202
203 return len + sizeof(struct verify_header);
204}
205
206static inline unsigned int hdr_size(struct thread_data *td,
207 struct verify_header *hdr)
208{
209 if (td->o.verify == VERIFY_PATTERN_NO_HDR)
210 return 0;
211
212 return __hdr_size(hdr->verify_type);
213}
214
215static void *hdr_priv(struct verify_header *hdr)
216{
217 void *priv = hdr;
218
219 return priv + sizeof(struct verify_header);
220}
221
222/*
223 * Verify container, pass info to verify handlers and allow them to
224 * pass info back in case of error
225 */
226struct vcont {
227 /*
228 * Input
229 */
230 struct io_u *io_u;
231 unsigned int hdr_num;
232 struct thread_data *td;
233
234 /*
235 * Output, only valid in case of error
236 */
237 const char *name;
238 void *good_crc;
239 void *bad_crc;
240 unsigned int crc_len;
241};
242
243#define DUMP_BUF_SZ 255
244
245static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
246 const char *type, struct fio_file *f)
247{
248 char *ptr, *fname;
249 char sep[2] = { FIO_OS_PATH_SEPARATOR, 0 };
250 int ret, fd;
251
252 ptr = strdup(f->file_name);
253
254 if (asprintf(&fname, "%s%s%s.%llu.%s", aux_path ? : "",
255 aux_path ? sep : "", basename(ptr), offset, type) < 0) {
256 if (!fio_did_warn(FIO_WARN_VERIFY_BUF))
257 log_err("fio: not enough memory for dump buffer filename\n");
258 goto free_ptr;
259 }
260
261 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
262 if (fd < 0) {
263 perror("open verify buf file");
264 goto free_fname;
265 }
266
267 while (len) {
268 ret = write(fd, buf, len);
269 if (!ret)
270 break;
271 else if (ret < 0) {
272 perror("write verify buf file");
273 break;
274 }
275 len -= ret;
276 buf += ret;
277 }
278
279 close(fd);
280 log_err(" %s data dumped as %s\n", type, fname);
281
282free_fname:
283 free(fname);
284
285free_ptr:
286 free(ptr);
287}
288
289/*
290 * Dump the contents of the read block and re-generate the correct data
291 * and dump that too.
292 */
293static void __dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
294{
295 struct thread_data *td = vc->td;
296 struct io_u *io_u = vc->io_u;
297 unsigned long hdr_offset;
298 struct io_u dummy;
299 void *buf;
300
301 if (!td->o.verify_dump)
302 return;
303
304 /*
305 * Dump the contents we just read off disk
306 */
307 hdr_offset = vc->hdr_num * hdr->len;
308
309 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
310 "received", vc->io_u->file);
311
312 /*
313 * Allocate a new buf and re-generate the original data
314 */
315 buf = malloc(io_u->buflen);
316 dummy = *io_u;
317 dummy.buf = buf;
318 dummy.rand_seed = hdr->rand_seed;
319 dummy.buf_filled_len = 0;
320 dummy.buflen = io_u->buflen;
321
322 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
323
324 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
325 "expected", vc->io_u->file);
326 free(buf);
327}
328
329static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
330{
331 struct thread_data *td = vc->td;
332 struct verify_header shdr;
333
334 if (td->o.verify == VERIFY_PATTERN_NO_HDR) {
335 __fill_hdr(td, vc->io_u, &shdr, 0, vc->io_u->buflen, 0);
336 hdr = &shdr;
337 }
338
339 __dump_verify_buffers(hdr, vc);
340}
341
342static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
343{
344 unsigned long long offset;
345
346 offset = vc->io_u->offset;
347 offset += vc->hdr_num * hdr->len;
348 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
349 vc->name, vc->io_u->file->file_name, offset, hdr->len);
350
351 if (vc->good_crc && vc->bad_crc) {
352 log_err(" Expected CRC: ");
353 hexdump(vc->good_crc, vc->crc_len);
354 log_err(" Received CRC: ");
355 hexdump(vc->bad_crc, vc->crc_len);
356 }
357
358 dump_verify_buffers(hdr, vc);
359}
360
361/*
362 * Return data area 'header_num'
363 */
364static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
365{
366 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(vc->td, hdr);
367}
368
369static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
370{
371 struct thread_data *td = vc->td;
372 struct io_u *io_u = vc->io_u;
373 char *buf, *pattern;
374 unsigned int header_size = __hdr_size(td->o.verify);
375 unsigned int len, mod, i, pattern_size;
376 int rc;
377
378 pattern = td->o.verify_pattern;
379 pattern_size = td->o.verify_pattern_bytes;
380 assert(pattern_size != 0);
381
382 (void)paste_format_inplace(pattern, pattern_size,
383 td->o.verify_fmt, td->o.verify_fmt_sz, io_u);
384
385 buf = (char *) hdr + header_size;
386 len = get_hdr_inc(td, io_u) - header_size;
387 mod = (get_hdr_inc(td, io_u) * vc->hdr_num + header_size) % pattern_size;
388
389 rc = cmp_pattern(pattern, pattern_size, mod, buf, len);
390 if (!rc)
391 return 0;
392
393 /* Slow path, compare each byte */
394 for (i = 0; i < len; i++) {
395 if (buf[i] != pattern[mod]) {
396 unsigned int bits;
397
398 bits = hweight8(buf[i] ^ pattern[mod]);
399 log_err("fio: got pattern '%02x', wanted '%02x'. Bad bits %d\n",
400 (unsigned char)buf[i],
401 (unsigned char)pattern[mod],
402 bits);
403 log_err("fio: bad pattern block offset %u\n", i);
404 vc->name = "pattern";
405 log_verify_failure(hdr, vc);
406 return EILSEQ;
407 }
408 mod++;
409 if (mod == td->o.verify_pattern_bytes)
410 mod = 0;
411 }
412
413 /* Unreachable line */
414 assert(0);
415 return EILSEQ;
416}
417
418static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
419{
420 void *p = io_u_verify_off(hdr, vc);
421 struct vhdr_xxhash *vh = hdr_priv(hdr);
422 uint32_t hash;
423 void *state;
424
425 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
426
427 state = XXH32_init(1);
428 XXH32_update(state, p, hdr->len - hdr_size(vc->td, hdr));
429 hash = XXH32_digest(state);
430
431 if (vh->hash == hash)
432 return 0;
433
434 vc->name = "xxhash";
435 vc->good_crc = &vh->hash;
436 vc->bad_crc = &hash;
437 vc->crc_len = sizeof(hash);
438 log_verify_failure(hdr, vc);
439 return EILSEQ;
440}
441
442static int verify_io_u_sha3(struct verify_header *hdr, struct vcont *vc,
443 struct fio_sha3_ctx *sha3_ctx, uint8_t *sha,
444 unsigned int sha_size, const char *name)
445{
446 void *p = io_u_verify_off(hdr, vc);
447
448 dprint(FD_VERIFY, "%s verify io_u %p, len %u\n", name, vc->io_u, hdr->len);
449
450 fio_sha3_update(sha3_ctx, p, hdr->len - hdr_size(vc->td, hdr));
451 fio_sha3_final(sha3_ctx);
452
453 if (!memcmp(sha, sha3_ctx->sha, sha_size))
454 return 0;
455
456 vc->name = name;
457 vc->good_crc = sha;
458 vc->bad_crc = sha3_ctx->sha;
459 vc->crc_len = sha_size;
460 log_verify_failure(hdr, vc);
461 return EILSEQ;
462}
463
464static int verify_io_u_sha3_224(struct verify_header *hdr, struct vcont *vc)
465{
466 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
467 uint8_t sha[SHA3_224_DIGEST_SIZE];
468 struct fio_sha3_ctx sha3_ctx = {
469 .sha = sha,
470 };
471
472 fio_sha3_224_init(&sha3_ctx);
473
474 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
475 SHA3_224_DIGEST_SIZE, "sha3-224");
476}
477
478static int verify_io_u_sha3_256(struct verify_header *hdr, struct vcont *vc)
479{
480 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
481 uint8_t sha[SHA3_256_DIGEST_SIZE];
482 struct fio_sha3_ctx sha3_ctx = {
483 .sha = sha,
484 };
485
486 fio_sha3_256_init(&sha3_ctx);
487
488 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
489 SHA3_256_DIGEST_SIZE, "sha3-256");
490}
491
492static int verify_io_u_sha3_384(struct verify_header *hdr, struct vcont *vc)
493{
494 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
495 uint8_t sha[SHA3_384_DIGEST_SIZE];
496 struct fio_sha3_ctx sha3_ctx = {
497 .sha = sha,
498 };
499
500 fio_sha3_384_init(&sha3_ctx);
501
502 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
503 SHA3_384_DIGEST_SIZE, "sha3-384");
504}
505
506static int verify_io_u_sha3_512(struct verify_header *hdr, struct vcont *vc)
507{
508 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
509 uint8_t sha[SHA3_512_DIGEST_SIZE];
510 struct fio_sha3_ctx sha3_ctx = {
511 .sha = sha,
512 };
513
514 fio_sha3_512_init(&sha3_ctx);
515
516 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
517 SHA3_512_DIGEST_SIZE, "sha3-512");
518}
519
520static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
521{
522 void *p = io_u_verify_off(hdr, vc);
523 struct vhdr_sha512 *vh = hdr_priv(hdr);
524 uint8_t sha512[128];
525 struct fio_sha512_ctx sha512_ctx = {
526 .buf = sha512,
527 };
528
529 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
530
531 fio_sha512_init(&sha512_ctx);
532 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(vc->td, hdr));
533
534 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
535 return 0;
536
537 vc->name = "sha512";
538 vc->good_crc = vh->sha512;
539 vc->bad_crc = sha512_ctx.buf;
540 vc->crc_len = sizeof(vh->sha512);
541 log_verify_failure(hdr, vc);
542 return EILSEQ;
543}
544
545static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
546{
547 void *p = io_u_verify_off(hdr, vc);
548 struct vhdr_sha256 *vh = hdr_priv(hdr);
549 uint8_t sha256[64];
550 struct fio_sha256_ctx sha256_ctx = {
551 .buf = sha256,
552 };
553
554 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
555
556 fio_sha256_init(&sha256_ctx);
557 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(vc->td, hdr));
558 fio_sha256_final(&sha256_ctx);
559
560 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
561 return 0;
562
563 vc->name = "sha256";
564 vc->good_crc = vh->sha256;
565 vc->bad_crc = sha256_ctx.buf;
566 vc->crc_len = sizeof(vh->sha256);
567 log_verify_failure(hdr, vc);
568 return EILSEQ;
569}
570
571static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
572{
573 void *p = io_u_verify_off(hdr, vc);
574 struct vhdr_sha1 *vh = hdr_priv(hdr);
575 uint32_t sha1[5];
576 struct fio_sha1_ctx sha1_ctx = {
577 .H = sha1,
578 };
579
580 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
581
582 fio_sha1_init(&sha1_ctx);
583 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(vc->td, hdr));
584 fio_sha1_final(&sha1_ctx);
585
586 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
587 return 0;
588
589 vc->name = "sha1";
590 vc->good_crc = vh->sha1;
591 vc->bad_crc = sha1_ctx.H;
592 vc->crc_len = sizeof(vh->sha1);
593 log_verify_failure(hdr, vc);
594 return EILSEQ;
595}
596
597static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
598{
599 void *p = io_u_verify_off(hdr, vc);
600 struct vhdr_crc7 *vh = hdr_priv(hdr);
601 unsigned char c;
602
603 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
604
605 c = fio_crc7(p, hdr->len - hdr_size(vc->td, hdr));
606
607 if (c == vh->crc7)
608 return 0;
609
610 vc->name = "crc7";
611 vc->good_crc = &vh->crc7;
612 vc->bad_crc = &c;
613 vc->crc_len = 1;
614 log_verify_failure(hdr, vc);
615 return EILSEQ;
616}
617
618static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
619{
620 void *p = io_u_verify_off(hdr, vc);
621 struct vhdr_crc16 *vh = hdr_priv(hdr);
622 unsigned short c;
623
624 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
625
626 c = fio_crc16(p, hdr->len - hdr_size(vc->td, hdr));
627
628 if (c == vh->crc16)
629 return 0;
630
631 vc->name = "crc16";
632 vc->good_crc = &vh->crc16;
633 vc->bad_crc = &c;
634 vc->crc_len = 2;
635 log_verify_failure(hdr, vc);
636 return EILSEQ;
637}
638
639static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
640{
641 void *p = io_u_verify_off(hdr, vc);
642 struct vhdr_crc64 *vh = hdr_priv(hdr);
643 unsigned long long c;
644
645 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
646
647 c = fio_crc64(p, hdr->len - hdr_size(vc->td, hdr));
648
649 if (c == vh->crc64)
650 return 0;
651
652 vc->name = "crc64";
653 vc->good_crc = &vh->crc64;
654 vc->bad_crc = &c;
655 vc->crc_len = 8;
656 log_verify_failure(hdr, vc);
657 return EILSEQ;
658}
659
660static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
661{
662 void *p = io_u_verify_off(hdr, vc);
663 struct vhdr_crc32 *vh = hdr_priv(hdr);
664 uint32_t c;
665
666 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
667
668 c = fio_crc32(p, hdr->len - hdr_size(vc->td, hdr));
669
670 if (c == vh->crc32)
671 return 0;
672
673 vc->name = "crc32";
674 vc->good_crc = &vh->crc32;
675 vc->bad_crc = &c;
676 vc->crc_len = 4;
677 log_verify_failure(hdr, vc);
678 return EILSEQ;
679}
680
681static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
682{
683 void *p = io_u_verify_off(hdr, vc);
684 struct vhdr_crc32 *vh = hdr_priv(hdr);
685 uint32_t c;
686
687 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
688
689 c = fio_crc32c(p, hdr->len - hdr_size(vc->td, hdr));
690
691 if (c == vh->crc32)
692 return 0;
693
694 vc->name = "crc32c";
695 vc->good_crc = &vh->crc32;
696 vc->bad_crc = &c;
697 vc->crc_len = 4;
698 log_verify_failure(hdr, vc);
699 return EILSEQ;
700}
701
702static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
703{
704 void *p = io_u_verify_off(hdr, vc);
705 struct vhdr_md5 *vh = hdr_priv(hdr);
706 uint32_t hash[MD5_HASH_WORDS];
707 struct fio_md5_ctx md5_ctx = {
708 .hash = hash,
709 };
710
711 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
712
713 fio_md5_init(&md5_ctx);
714 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(vc->td, hdr));
715 fio_md5_final(&md5_ctx);
716
717 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
718 return 0;
719
720 vc->name = "md5";
721 vc->good_crc = vh->md5_digest;
722 vc->bad_crc = md5_ctx.hash;
723 vc->crc_len = sizeof(hash);
724 log_verify_failure(hdr, vc);
725 return EILSEQ;
726}
727
728/*
729 * Push IO verification to a separate thread
730 */
731int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
732{
733 struct io_u *io_u = *io_u_ptr;
734
735 pthread_mutex_lock(&td->io_u_lock);
736
737 if (io_u->file)
738 put_file_log(td, io_u->file);
739
740 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
741 td->cur_depth--;
742 io_u_clear(td, io_u, IO_U_F_IN_CUR_DEPTH);
743 }
744 flist_add_tail(&io_u->verify_list, &td->verify_list);
745 *io_u_ptr = NULL;
746
747 pthread_cond_signal(&td->verify_cond);
748 pthread_mutex_unlock(&td->io_u_lock);
749 return 0;
750}
751
752/*
753 * Thanks Rusty, for spending the time so I don't have to.
754 *
755 * http://rusty.ozlabs.org/?p=560
756 */
757static int mem_is_zero(const void *data, size_t length)
758{
759 const unsigned char *p = data;
760 size_t len;
761
762 /* Check first 16 bytes manually */
763 for (len = 0; len < 16; len++) {
764 if (!length)
765 return 1;
766 if (*p)
767 return 0;
768 p++;
769 length--;
770 }
771
772 /* Now we know that's zero, memcmp with self. */
773 return memcmp(data, p, length) == 0;
774}
775
776static int mem_is_zero_slow(const void *data, size_t length, size_t *offset)
777{
778 const unsigned char *p = data;
779
780 *offset = 0;
781 while (length) {
782 if (*p)
783 break;
784 (*offset)++;
785 length--;
786 p++;
787 }
788
789 return !length;
790}
791
792static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
793{
794 size_t offset;
795
796 if (!td->o.trim_zero)
797 return 0;
798
799 if (mem_is_zero(io_u->buf, io_u->buflen))
800 return 0;
801
802 mem_is_zero_slow(io_u->buf, io_u->buflen, &offset);
803
804 log_err("trim: verify failed at file %s offset %llu, length %lu"
805 ", block offset %lu\n",
806 io_u->file->file_name, io_u->offset, io_u->buflen,
807 (unsigned long) offset);
808 return EILSEQ;
809}
810
811static int verify_header(struct io_u *io_u, struct thread_data *td,
812 struct verify_header *hdr, unsigned int hdr_num,
813 unsigned int hdr_len)
814{
815 void *p = hdr;
816 uint32_t crc;
817
818 if (hdr->magic != FIO_HDR_MAGIC) {
819 log_err("verify: bad magic header %x, wanted %x",
820 hdr->magic, FIO_HDR_MAGIC);
821 goto err;
822 }
823 if (hdr->len != hdr_len) {
824 log_err("verify: bad header length %u, wanted %u",
825 hdr->len, hdr_len);
826 goto err;
827 }
828 if (hdr->rand_seed != io_u->rand_seed) {
829 log_err("verify: bad header rand_seed %"PRIu64
830 ", wanted %"PRIu64,
831 hdr->rand_seed, io_u->rand_seed);
832 goto err;
833 }
834 if (hdr->offset != io_u->offset + hdr_num * td->o.verify_interval) {
835 log_err("verify: bad header offset %"PRIu64
836 ", wanted %llu",
837 hdr->offset, io_u->offset);
838 goto err;
839 }
840
841 /*
842 * For read-only workloads, the program cannot be certain of the
843 * last numberio written to a block. Checking of numberio will be
844 * done only for workloads that write data. For verify_only,
845 * numberio will be checked in the last iteration when the correct
846 * state of numberio, that would have been written to each block
847 * in a previous run of fio, has been reached.
848 */
849 if (td_write(td) && (td_min_bs(td) == td_max_bs(td)) &&
850 !td->o.time_based)
851 if (!td->o.verify_only || td->o.loops == 0)
852 if (hdr->numberio != io_u->numberio) {
853 log_err("verify: bad header numberio %"PRIu16
854 ", wanted %"PRIu16,
855 hdr->numberio, io_u->numberio);
856 goto err;
857 }
858
859 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
860 if (crc != hdr->crc32) {
861 log_err("verify: bad header crc %x, calculated %x",
862 hdr->crc32, crc);
863 goto err;
864 }
865 return 0;
866
867err:
868 log_err(" at file %s offset %llu, length %u\n",
869 io_u->file->file_name,
870 io_u->offset + hdr_num * hdr_len, hdr_len);
871
872 if (td->o.verify_dump)
873 dump_buf(p, hdr_len, io_u->offset + hdr_num * hdr_len,
874 "hdr_fail", io_u->file);
875
876 return EILSEQ;
877}
878
879int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
880{
881 struct verify_header *hdr;
882 struct io_u *io_u = *io_u_ptr;
883 unsigned int header_size, hdr_inc, hdr_num = 0;
884 void *p;
885 int ret;
886
887 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
888 return 0;
889 /*
890 * If the IO engine is faking IO (like null), then just pretend
891 * we verified everything.
892 */
893 if (td_ioengine_flagged(td, FIO_FAKEIO))
894 return 0;
895
896 if (io_u->flags & IO_U_F_TRIMMED) {
897 ret = verify_trimmed_io_u(td, io_u);
898 goto done;
899 }
900
901 hdr_inc = get_hdr_inc(td, io_u);
902
903 ret = 0;
904 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
905 p += hdr_inc, hdr_num++) {
906 struct vcont vc = {
907 .io_u = io_u,
908 .hdr_num = hdr_num,
909 .td = td,
910 };
911 unsigned int verify_type;
912
913 if (ret && td->o.verify_fatal)
914 break;
915
916 header_size = __hdr_size(td->o.verify);
917 if (td->o.verify_offset)
918 memswp(p, p + td->o.verify_offset, header_size);
919 hdr = p;
920
921 /*
922 * Make rand_seed check pass when have verifysort or
923 * verify_backlog.
924 */
925 if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG))
926 io_u->rand_seed = hdr->rand_seed;
927
928 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
929 ret = verify_header(io_u, td, hdr, hdr_num, hdr_inc);
930 if (ret)
931 return ret;
932 }
933
934 if (td->o.verify != VERIFY_NONE)
935 verify_type = td->o.verify;
936 else
937 verify_type = hdr->verify_type;
938
939 switch (verify_type) {
940 case VERIFY_HDR_ONLY:
941 /* Header is always verified, check if pattern is left
942 * for verification. */
943 if (td->o.verify_pattern_bytes)
944 ret = verify_io_u_pattern(hdr, &vc);
945 break;
946 case VERIFY_MD5:
947 ret = verify_io_u_md5(hdr, &vc);
948 break;
949 case VERIFY_CRC64:
950 ret = verify_io_u_crc64(hdr, &vc);
951 break;
952 case VERIFY_CRC32C:
953 case VERIFY_CRC32C_INTEL:
954 ret = verify_io_u_crc32c(hdr, &vc);
955 break;
956 case VERIFY_CRC32:
957 ret = verify_io_u_crc32(hdr, &vc);
958 break;
959 case VERIFY_CRC16:
960 ret = verify_io_u_crc16(hdr, &vc);
961 break;
962 case VERIFY_CRC7:
963 ret = verify_io_u_crc7(hdr, &vc);
964 break;
965 case VERIFY_SHA256:
966 ret = verify_io_u_sha256(hdr, &vc);
967 break;
968 case VERIFY_SHA512:
969 ret = verify_io_u_sha512(hdr, &vc);
970 break;
971 case VERIFY_SHA3_224:
972 ret = verify_io_u_sha3_224(hdr, &vc);
973 break;
974 case VERIFY_SHA3_256:
975 ret = verify_io_u_sha3_256(hdr, &vc);
976 break;
977 case VERIFY_SHA3_384:
978 ret = verify_io_u_sha3_384(hdr, &vc);
979 break;
980 case VERIFY_SHA3_512:
981 ret = verify_io_u_sha3_512(hdr, &vc);
982 break;
983 case VERIFY_XXHASH:
984 ret = verify_io_u_xxhash(hdr, &vc);
985 break;
986 case VERIFY_SHA1:
987 ret = verify_io_u_sha1(hdr, &vc);
988 break;
989 case VERIFY_PATTERN:
990 case VERIFY_PATTERN_NO_HDR:
991 ret = verify_io_u_pattern(hdr, &vc);
992 break;
993 default:
994 log_err("Bad verify type %u\n", hdr->verify_type);
995 ret = EINVAL;
996 }
997
998 if (ret && verify_type != hdr->verify_type)
999 log_err("fio: verify type mismatch (%u media, %u given)\n",
1000 hdr->verify_type, verify_type);
1001 }
1002
1003done:
1004 if (ret && td->o.verify_fatal)
1005 fio_mark_td_terminate(td);
1006
1007 return ret;
1008}
1009
1010static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
1011{
1012 struct vhdr_xxhash *vh = hdr_priv(hdr);
1013 void *state;
1014
1015 state = XXH32_init(1);
1016 XXH32_update(state, p, len);
1017 vh->hash = XXH32_digest(state);
1018}
1019
1020static void fill_sha3(struct fio_sha3_ctx *sha3_ctx, void *p, unsigned int len)
1021{
1022 fio_sha3_update(sha3_ctx, p, len);
1023 fio_sha3_final(sha3_ctx);
1024}
1025
1026static void fill_sha3_224(struct verify_header *hdr, void *p, unsigned int len)
1027{
1028 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
1029 struct fio_sha3_ctx sha3_ctx = {
1030 .sha = vh->sha,
1031 };
1032
1033 fio_sha3_224_init(&sha3_ctx);
1034 fill_sha3(&sha3_ctx, p, len);
1035}
1036
1037static void fill_sha3_256(struct verify_header *hdr, void *p, unsigned int len)
1038{
1039 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
1040 struct fio_sha3_ctx sha3_ctx = {
1041 .sha = vh->sha,
1042 };
1043
1044 fio_sha3_256_init(&sha3_ctx);
1045 fill_sha3(&sha3_ctx, p, len);
1046}
1047
1048static void fill_sha3_384(struct verify_header *hdr, void *p, unsigned int len)
1049{
1050 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
1051 struct fio_sha3_ctx sha3_ctx = {
1052 .sha = vh->sha,
1053 };
1054
1055 fio_sha3_384_init(&sha3_ctx);
1056 fill_sha3(&sha3_ctx, p, len);
1057}
1058
1059static void fill_sha3_512(struct verify_header *hdr, void *p, unsigned int len)
1060{
1061 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
1062 struct fio_sha3_ctx sha3_ctx = {
1063 .sha = vh->sha,
1064 };
1065
1066 fio_sha3_512_init(&sha3_ctx);
1067 fill_sha3(&sha3_ctx, p, len);
1068}
1069
1070static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
1071{
1072 struct vhdr_sha512 *vh = hdr_priv(hdr);
1073 struct fio_sha512_ctx sha512_ctx = {
1074 .buf = vh->sha512,
1075 };
1076
1077 fio_sha512_init(&sha512_ctx);
1078 fio_sha512_update(&sha512_ctx, p, len);
1079}
1080
1081static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
1082{
1083 struct vhdr_sha256 *vh = hdr_priv(hdr);
1084 struct fio_sha256_ctx sha256_ctx = {
1085 .buf = vh->sha256,
1086 };
1087
1088 fio_sha256_init(&sha256_ctx);
1089 fio_sha256_update(&sha256_ctx, p, len);
1090 fio_sha256_final(&sha256_ctx);
1091}
1092
1093static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
1094{
1095 struct vhdr_sha1 *vh = hdr_priv(hdr);
1096 struct fio_sha1_ctx sha1_ctx = {
1097 .H = vh->sha1,
1098 };
1099
1100 fio_sha1_init(&sha1_ctx);
1101 fio_sha1_update(&sha1_ctx, p, len);
1102 fio_sha1_final(&sha1_ctx);
1103}
1104
1105static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
1106{
1107 struct vhdr_crc7 *vh = hdr_priv(hdr);
1108
1109 vh->crc7 = fio_crc7(p, len);
1110}
1111
1112static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
1113{
1114 struct vhdr_crc16 *vh = hdr_priv(hdr);
1115
1116 vh->crc16 = fio_crc16(p, len);
1117}
1118
1119static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
1120{
1121 struct vhdr_crc32 *vh = hdr_priv(hdr);
1122
1123 vh->crc32 = fio_crc32(p, len);
1124}
1125
1126static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
1127{
1128 struct vhdr_crc32 *vh = hdr_priv(hdr);
1129
1130 vh->crc32 = fio_crc32c(p, len);
1131}
1132
1133static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
1134{
1135 struct vhdr_crc64 *vh = hdr_priv(hdr);
1136
1137 vh->crc64 = fio_crc64(p, len);
1138}
1139
1140static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
1141{
1142 struct vhdr_md5 *vh = hdr_priv(hdr);
1143 struct fio_md5_ctx md5_ctx = {
1144 .hash = (uint32_t *) vh->md5_digest,
1145 };
1146
1147 fio_md5_init(&md5_ctx);
1148 fio_md5_update(&md5_ctx, p, len);
1149 fio_md5_final(&md5_ctx);
1150}
1151
1152static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
1153 struct verify_header *hdr, unsigned int header_num,
1154 unsigned int header_len, uint64_t rand_seed)
1155{
1156 void *p = hdr;
1157
1158 hdr->magic = FIO_HDR_MAGIC;
1159 hdr->verify_type = td->o.verify;
1160 hdr->len = header_len;
1161 hdr->rand_seed = rand_seed;
1162 hdr->offset = io_u->offset + header_num * td->o.verify_interval;
1163 hdr->time_sec = io_u->start_time.tv_sec;
1164 hdr->time_nsec = io_u->start_time.tv_nsec;
1165 hdr->thread = td->thread_number;
1166 hdr->numberio = io_u->numberio;
1167 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
1168}
1169
1170
1171static void fill_hdr(struct thread_data *td, struct io_u *io_u,
1172 struct verify_header *hdr, unsigned int header_num,
1173 unsigned int header_len, uint64_t rand_seed)
1174{
1175 if (td->o.verify != VERIFY_PATTERN_NO_HDR)
1176 __fill_hdr(td, io_u, hdr, header_num, header_len, rand_seed);
1177}
1178
1179static void populate_hdr(struct thread_data *td, struct io_u *io_u,
1180 struct verify_header *hdr, unsigned int header_num,
1181 unsigned int header_len)
1182{
1183 unsigned int data_len;
1184 void *data;
1185 char *p;
1186
1187 p = (char *) hdr;
1188
1189 fill_hdr(td, io_u, hdr, header_num, header_len, io_u->rand_seed);
1190
1191 data_len = header_len - hdr_size(td, hdr);
1192
1193 data = p + hdr_size(td, hdr);
1194 switch (td->o.verify) {
1195 case VERIFY_MD5:
1196 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
1197 io_u, hdr->len);
1198 fill_md5(hdr, data, data_len);
1199 break;
1200 case VERIFY_CRC64:
1201 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
1202 io_u, hdr->len);
1203 fill_crc64(hdr, data, data_len);
1204 break;
1205 case VERIFY_CRC32C:
1206 case VERIFY_CRC32C_INTEL:
1207 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1208 io_u, hdr->len);
1209 fill_crc32c(hdr, data, data_len);
1210 break;
1211 case VERIFY_CRC32:
1212 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1213 io_u, hdr->len);
1214 fill_crc32(hdr, data, data_len);
1215 break;
1216 case VERIFY_CRC16:
1217 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1218 io_u, hdr->len);
1219 fill_crc16(hdr, data, data_len);
1220 break;
1221 case VERIFY_CRC7:
1222 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1223 io_u, hdr->len);
1224 fill_crc7(hdr, data, data_len);
1225 break;
1226 case VERIFY_SHA256:
1227 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1228 io_u, hdr->len);
1229 fill_sha256(hdr, data, data_len);
1230 break;
1231 case VERIFY_SHA512:
1232 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1233 io_u, hdr->len);
1234 fill_sha512(hdr, data, data_len);
1235 break;
1236 case VERIFY_SHA3_224:
1237 dprint(FD_VERIFY, "fill sha3-224 io_u %p, len %u\n",
1238 io_u, hdr->len);
1239 fill_sha3_224(hdr, data, data_len);
1240 break;
1241 case VERIFY_SHA3_256:
1242 dprint(FD_VERIFY, "fill sha3-256 io_u %p, len %u\n",
1243 io_u, hdr->len);
1244 fill_sha3_256(hdr, data, data_len);
1245 break;
1246 case VERIFY_SHA3_384:
1247 dprint(FD_VERIFY, "fill sha3-384 io_u %p, len %u\n",
1248 io_u, hdr->len);
1249 fill_sha3_384(hdr, data, data_len);
1250 break;
1251 case VERIFY_SHA3_512:
1252 dprint(FD_VERIFY, "fill sha3-512 io_u %p, len %u\n",
1253 io_u, hdr->len);
1254 fill_sha3_512(hdr, data, data_len);
1255 break;
1256 case VERIFY_XXHASH:
1257 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1258 io_u, hdr->len);
1259 fill_xxhash(hdr, data, data_len);
1260 break;
1261 case VERIFY_SHA1:
1262 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1263 io_u, hdr->len);
1264 fill_sha1(hdr, data, data_len);
1265 break;
1266 case VERIFY_HDR_ONLY:
1267 case VERIFY_PATTERN:
1268 case VERIFY_PATTERN_NO_HDR:
1269 /* nothing to do here */
1270 break;
1271 default:
1272 log_err("fio: bad verify type: %d\n", td->o.verify);
1273 assert(0);
1274 }
1275
1276 if (td->o.verify_offset && hdr_size(td, hdr))
1277 memswp(p, p + td->o.verify_offset, hdr_size(td, hdr));
1278}
1279
1280/*
1281 * fill body of io_u->buf with random data and add a header with the
1282 * checksum of choice
1283 */
1284void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1285{
1286 if (td->o.verify == VERIFY_NULL)
1287 return;
1288
1289 io_u->numberio = td->io_issues[io_u->ddir];
1290
1291 fill_pattern_headers(td, io_u, 0, 0);
1292}
1293
1294int get_next_verify(struct thread_data *td, struct io_u *io_u)
1295{
1296 struct io_piece *ipo = NULL;
1297
1298 /*
1299 * this io_u is from a requeue, we already filled the offsets
1300 */
1301 if (io_u->file)
1302 return 0;
1303
1304 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1305 struct fio_rb_node *n = rb_first(&td->io_hist_tree);
1306
1307 ipo = rb_entry(n, struct io_piece, rb_node);
1308
1309 /*
1310 * Ensure that the associated IO has completed
1311 */
1312 read_barrier();
1313 if (ipo->flags & IP_F_IN_FLIGHT)
1314 goto nothing;
1315
1316 rb_erase(n, &td->io_hist_tree);
1317 assert(ipo->flags & IP_F_ONRB);
1318 ipo->flags &= ~IP_F_ONRB;
1319 } else if (!flist_empty(&td->io_hist_list)) {
1320 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1321
1322 /*
1323 * Ensure that the associated IO has completed
1324 */
1325 read_barrier();
1326 if (ipo->flags & IP_F_IN_FLIGHT)
1327 goto nothing;
1328
1329 flist_del(&ipo->list);
1330 assert(ipo->flags & IP_F_ONLIST);
1331 ipo->flags &= ~IP_F_ONLIST;
1332 }
1333
1334 if (ipo) {
1335 td->io_hist_len--;
1336
1337 io_u->offset = ipo->offset;
1338 io_u->buflen = ipo->len;
1339 io_u->numberio = ipo->numberio;
1340 io_u->file = ipo->file;
1341 io_u_set(td, io_u, IO_U_F_VER_LIST);
1342
1343 if (ipo->flags & IP_F_TRIMMED)
1344 io_u_set(td, io_u, IO_U_F_TRIMMED);
1345
1346 if (!fio_file_open(io_u->file)) {
1347 int r = td_io_open_file(td, io_u->file);
1348
1349 if (r) {
1350 dprint(FD_VERIFY, "failed file %s open\n",
1351 io_u->file->file_name);
1352 return 1;
1353 }
1354 }
1355
1356 get_file(ipo->file);
1357 assert(fio_file_open(io_u->file));
1358 io_u->ddir = DDIR_READ;
1359 io_u->xfer_buf = io_u->buf;
1360 io_u->xfer_buflen = io_u->buflen;
1361
1362 remove_trim_entry(td, ipo);
1363 free(ipo);
1364 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1365
1366 if (!td->o.verify_pattern_bytes) {
1367 io_u->rand_seed = __rand(&td->verify_state);
1368 if (sizeof(int) != sizeof(long *))
1369 io_u->rand_seed *= __rand(&td->verify_state);
1370 }
1371 return 0;
1372 }
1373
1374nothing:
1375 dprint(FD_VERIFY, "get_next_verify: empty\n");
1376 return 1;
1377}
1378
1379void fio_verify_init(struct thread_data *td)
1380{
1381 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1382 td->o.verify == VERIFY_CRC32C) {
1383 crc32c_arm64_probe();
1384 crc32c_intel_probe();
1385 }
1386}
1387
1388static void *verify_async_thread(void *data)
1389{
1390 struct thread_data *td = data;
1391 struct io_u *io_u;
1392 int ret = 0;
1393
1394 if (fio_option_is_set(&td->o, verify_cpumask) &&
1395 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1396 log_err("fio: failed setting verify thread affinity\n");
1397 goto done;
1398 }
1399
1400 do {
1401 FLIST_HEAD(list);
1402
1403 read_barrier();
1404 if (td->verify_thread_exit)
1405 break;
1406
1407 pthread_mutex_lock(&td->io_u_lock);
1408
1409 while (flist_empty(&td->verify_list) &&
1410 !td->verify_thread_exit) {
1411 ret = pthread_cond_wait(&td->verify_cond,
1412 &td->io_u_lock);
1413 if (ret) {
1414 pthread_mutex_unlock(&td->io_u_lock);
1415 break;
1416 }
1417 }
1418
1419 flist_splice_init(&td->verify_list, &list);
1420 pthread_mutex_unlock(&td->io_u_lock);
1421
1422 if (flist_empty(&list))
1423 continue;
1424
1425 while (!flist_empty(&list)) {
1426 io_u = flist_first_entry(&list, struct io_u, verify_list);
1427 flist_del_init(&io_u->verify_list);
1428
1429 io_u_set(td, io_u, IO_U_F_NO_FILE_PUT);
1430 ret = verify_io_u(td, &io_u);
1431
1432 put_io_u(td, io_u);
1433 if (!ret)
1434 continue;
1435 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1436 update_error_count(td, ret);
1437 td_clear_error(td);
1438 ret = 0;
1439 }
1440 }
1441 } while (!ret);
1442
1443 if (ret) {
1444 td_verror(td, ret, "async_verify");
1445 if (td->o.verify_fatal)
1446 fio_mark_td_terminate(td);
1447 }
1448
1449done:
1450 pthread_mutex_lock(&td->io_u_lock);
1451 td->nr_verify_threads--;
1452 pthread_cond_signal(&td->free_cond);
1453 pthread_mutex_unlock(&td->io_u_lock);
1454
1455 return NULL;
1456}
1457
1458int verify_async_init(struct thread_data *td)
1459{
1460 int i, ret;
1461 pthread_attr_t attr;
1462
1463 pthread_attr_init(&attr);
1464 pthread_attr_setstacksize(&attr, 2 * PTHREAD_STACK_MIN);
1465
1466 td->verify_thread_exit = 0;
1467
1468 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1469 for (i = 0; i < td->o.verify_async; i++) {
1470 ret = pthread_create(&td->verify_threads[i], &attr,
1471 verify_async_thread, td);
1472 if (ret) {
1473 log_err("fio: async verify creation failed: %s\n",
1474 strerror(ret));
1475 break;
1476 }
1477 ret = pthread_detach(td->verify_threads[i]);
1478 if (ret) {
1479 log_err("fio: async verify thread detach failed: %s\n",
1480 strerror(ret));
1481 break;
1482 }
1483 td->nr_verify_threads++;
1484 }
1485
1486 pthread_attr_destroy(&attr);
1487
1488 if (i != td->o.verify_async) {
1489 log_err("fio: only %d verify threads started, exiting\n", i);
1490
1491 pthread_mutex_lock(&td->io_u_lock);
1492 td->verify_thread_exit = 1;
1493 pthread_cond_broadcast(&td->verify_cond);
1494 pthread_mutex_unlock(&td->io_u_lock);
1495
1496 return 1;
1497 }
1498
1499 return 0;
1500}
1501
1502void verify_async_exit(struct thread_data *td)
1503{
1504 pthread_mutex_lock(&td->io_u_lock);
1505 td->verify_thread_exit = 1;
1506 pthread_cond_broadcast(&td->verify_cond);
1507
1508 while (td->nr_verify_threads)
1509 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1510
1511 pthread_mutex_unlock(&td->io_u_lock);
1512 free(td->verify_threads);
1513 td->verify_threads = NULL;
1514}
1515
1516int paste_blockoff(char *buf, unsigned int len, void *priv)
1517{
1518 struct io_u *io = priv;
1519 unsigned long long off;
1520
1521 typecheck(typeof(off), io->offset);
1522 off = cpu_to_le64((uint64_t)io->offset);
1523 len = min(len, (unsigned int)sizeof(off));
1524 memcpy(buf, &off, len);
1525 return 0;
1526}
1527
1528static int __fill_file_completions(struct thread_data *td,
1529 struct thread_io_list *s,
1530 struct fio_file *f, unsigned int *index)
1531{
1532 unsigned int comps;
1533 int i, j;
1534
1535 if (!f->last_write_comp)
1536 return 0;
1537
1538 if (td->io_blocks[DDIR_WRITE] < td->o.iodepth)
1539 comps = td->io_blocks[DDIR_WRITE];
1540 else
1541 comps = td->o.iodepth;
1542
1543 j = f->last_write_idx - 1;
1544 for (i = 0; i < comps; i++) {
1545 if (j == -1)
1546 j = td->o.iodepth - 1;
1547 s->comps[*index].fileno = __cpu_to_le64(f->fileno);
1548 s->comps[*index].offset = cpu_to_le64(f->last_write_comp[j]);
1549 (*index)++;
1550 j--;
1551 }
1552
1553 return comps;
1554}
1555
1556static int fill_file_completions(struct thread_data *td,
1557 struct thread_io_list *s, unsigned int *index)
1558{
1559 struct fio_file *f;
1560 unsigned int i;
1561 int comps = 0;
1562
1563 for_each_file(td, f, i)
1564 comps += __fill_file_completions(td, s, f, index);
1565
1566 return comps;
1567}
1568
1569struct all_io_list *get_all_io_list(int save_mask, size_t *sz)
1570{
1571 struct all_io_list *rep;
1572 struct thread_data *td;
1573 size_t depth;
1574 void *next;
1575 int i, nr;
1576
1577 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1578
1579 /*
1580 * Calculate reply space needed. We need one 'io_state' per thread,
1581 * and the size will vary depending on depth.
1582 */
1583 depth = 0;
1584 nr = 0;
1585 for_each_td(td, i) {
1586 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1587 continue;
1588 td->stop_io = 1;
1589 td->flags |= TD_F_VSTATE_SAVED;
1590 depth += (td->o.iodepth * td->o.nr_files);
1591 nr++;
1592 }
1593
1594 if (!nr)
1595 return NULL;
1596
1597 *sz = sizeof(*rep);
1598 *sz += nr * sizeof(struct thread_io_list);
1599 *sz += depth * sizeof(struct file_comp);
1600 rep = malloc(*sz);
1601 memset(rep, 0, *sz);
1602
1603 rep->threads = cpu_to_le64((uint64_t) nr);
1604
1605 next = &rep->state[0];
1606 for_each_td(td, i) {
1607 struct thread_io_list *s = next;
1608 unsigned int comps, index = 0;
1609
1610 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1611 continue;
1612
1613 comps = fill_file_completions(td, s, &index);
1614
1615 s->no_comps = cpu_to_le64((uint64_t) comps);
1616 s->depth = cpu_to_le64((uint64_t) td->o.iodepth);
1617 s->nofiles = cpu_to_le64((uint64_t) td->o.nr_files);
1618 s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]);
1619 s->index = cpu_to_le64((uint64_t) i);
1620 if (td->random_state.use64) {
1621 s->rand.state64.s[0] = cpu_to_le64(td->random_state.state64.s1);
1622 s->rand.state64.s[1] = cpu_to_le64(td->random_state.state64.s2);
1623 s->rand.state64.s[2] = cpu_to_le64(td->random_state.state64.s3);
1624 s->rand.state64.s[3] = cpu_to_le64(td->random_state.state64.s4);
1625 s->rand.state64.s[4] = cpu_to_le64(td->random_state.state64.s5);
1626 s->rand.state64.s[5] = 0;
1627 s->rand.use64 = cpu_to_le64((uint64_t)1);
1628 } else {
1629 s->rand.state32.s[0] = cpu_to_le32(td->random_state.state32.s1);
1630 s->rand.state32.s[1] = cpu_to_le32(td->random_state.state32.s2);
1631 s->rand.state32.s[2] = cpu_to_le32(td->random_state.state32.s3);
1632 s->rand.state32.s[3] = 0;
1633 s->rand.use64 = 0;
1634 }
1635 s->name[sizeof(s->name) - 1] = '\0';
1636 strncpy((char *) s->name, td->o.name, sizeof(s->name) - 1);
1637 next = io_list_next(s);
1638 }
1639
1640 return rep;
1641}
1642
1643static int open_state_file(const char *name, const char *prefix, int num,
1644 int for_write)
1645{
1646 char out[PATH_MAX];
1647 int flags;
1648 int fd;
1649
1650 if (for_write)
1651 flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC;
1652 else
1653 flags = O_RDONLY;
1654
1655 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1656
1657 fd = open(out, flags, 0644);
1658 if (fd == -1) {
1659 perror("fio: open state file");
1660 log_err("fio: state file: %s (for_write=%d)\n", out, for_write);
1661 return -1;
1662 }
1663
1664 return fd;
1665}
1666
1667static int write_thread_list_state(struct thread_io_list *s,
1668 const char *prefix)
1669{
1670 struct verify_state_hdr hdr;
1671 uint64_t crc;
1672 ssize_t ret;
1673 int fd;
1674
1675 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1676 if (fd == -1)
1677 return 1;
1678
1679 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1680
1681 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1682 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1683 hdr.crc = cpu_to_le64(crc);
1684 ret = write(fd, &hdr, sizeof(hdr));
1685 if (ret != sizeof(hdr))
1686 goto write_fail;
1687
1688 ret = write(fd, s, thread_io_list_sz(s));
1689 if (ret != thread_io_list_sz(s)) {
1690write_fail:
1691 if (ret < 0)
1692 perror("fio: write state file");
1693 log_err("fio: failed to write state file\n");
1694 ret = 1;
1695 } else
1696 ret = 0;
1697
1698 close(fd);
1699 return ret;
1700}
1701
1702void __verify_save_state(struct all_io_list *state, const char *prefix)
1703{
1704 struct thread_io_list *s = &state->state[0];
1705 unsigned int i;
1706
1707 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1708 write_thread_list_state(s, prefix);
1709 s = io_list_next(s);
1710 }
1711}
1712
1713void verify_save_state(int mask)
1714{
1715 struct all_io_list *state;
1716 size_t sz;
1717
1718 state = get_all_io_list(mask, &sz);
1719 if (state) {
1720 char prefix[PATH_MAX];
1721
1722 if (aux_path)
1723 sprintf(prefix, "%s%clocal", aux_path, FIO_OS_PATH_SEPARATOR);
1724 else
1725 strcpy(prefix, "local");
1726
1727 __verify_save_state(state, prefix);
1728 free(state);
1729 }
1730}
1731
1732void verify_free_state(struct thread_data *td)
1733{
1734 if (td->vstate)
1735 free(td->vstate);
1736}
1737
1738void verify_assign_state(struct thread_data *td, void *p)
1739{
1740 struct thread_io_list *s = p;
1741 int i;
1742
1743 s->no_comps = le64_to_cpu(s->no_comps);
1744 s->depth = le32_to_cpu(s->depth);
1745 s->nofiles = le32_to_cpu(s->nofiles);
1746 s->numberio = le64_to_cpu(s->numberio);
1747 s->rand.use64 = le64_to_cpu(s->rand.use64);
1748
1749 if (s->rand.use64) {
1750 for (i = 0; i < 6; i++)
1751 s->rand.state64.s[i] = le64_to_cpu(s->rand.state64.s[i]);
1752 } else {
1753 for (i = 0; i < 4; i++)
1754 s->rand.state32.s[i] = le32_to_cpu(s->rand.state32.s[i]);
1755 }
1756
1757 for (i = 0; i < s->no_comps; i++) {
1758 s->comps[i].fileno = le64_to_cpu(s->comps[i].fileno);
1759 s->comps[i].offset = le64_to_cpu(s->comps[i].offset);
1760 }
1761
1762 td->vstate = p;
1763}
1764
1765int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s)
1766{
1767 uint64_t crc;
1768
1769 hdr->version = le64_to_cpu(hdr->version);
1770 hdr->size = le64_to_cpu(hdr->size);
1771 hdr->crc = le64_to_cpu(hdr->crc);
1772
1773 if (hdr->version != VSTATE_HDR_VERSION)
1774 return 1;
1775
1776 crc = fio_crc32c((void *)s, hdr->size);
1777 if (crc != hdr->crc)
1778 return 1;
1779
1780 return 0;
1781}
1782
1783int verify_load_state(struct thread_data *td, const char *prefix)
1784{
1785 struct verify_state_hdr hdr;
1786 void *s = NULL;
1787 uint64_t crc;
1788 ssize_t ret;
1789 int fd;
1790
1791 if (!td->o.verify_state)
1792 return 0;
1793
1794 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1795 if (fd == -1)
1796 return 1;
1797
1798 ret = read(fd, &hdr, sizeof(hdr));
1799 if (ret != sizeof(hdr)) {
1800 if (ret < 0)
1801 td_verror(td, errno, "read verify state hdr");
1802 log_err("fio: failed reading verify state header\n");
1803 goto err;
1804 }
1805
1806 hdr.version = le64_to_cpu(hdr.version);
1807 hdr.size = le64_to_cpu(hdr.size);
1808 hdr.crc = le64_to_cpu(hdr.crc);
1809
1810 if (hdr.version != VSTATE_HDR_VERSION) {
1811 log_err("fio: unsupported (%d) version in verify state header\n",
1812 (unsigned int) hdr.version);
1813 goto err;
1814 }
1815
1816 s = malloc(hdr.size);
1817 ret = read(fd, s, hdr.size);
1818 if (ret != hdr.size) {
1819 if (ret < 0)
1820 td_verror(td, errno, "read verify state");
1821 log_err("fio: failed reading verity state\n");
1822 goto err;
1823 }
1824
1825 crc = fio_crc32c(s, hdr.size);
1826 if (crc != hdr.crc) {
1827 log_err("fio: verify state is corrupt\n");
1828 goto err;
1829 }
1830
1831 close(fd);
1832
1833 verify_assign_state(td, s);
1834 return 0;
1835err:
1836 if (s)
1837 free(s);
1838 close(fd);
1839 return 1;
1840}
1841
1842/*
1843 * Use the loaded verify state to know when to stop doing verification
1844 */
1845int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1846{
1847 struct thread_io_list *s = td->vstate;
1848 struct fio_file *f = io_u->file;
1849 int i;
1850
1851 if (!s || !f)
1852 return 0;
1853
1854 /*
1855 * If we're not into the window of issues - depth yet, continue. If
1856 * issue is shorter than depth, do check.
1857 */
1858 if ((td->io_blocks[DDIR_READ] < s->depth ||
1859 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1860 s->numberio > s->depth)
1861 return 0;
1862
1863 /*
1864 * We're in the window of having to check if this io was
1865 * completed or not. If the IO was seen as completed, then
1866 * lets verify it.
1867 */
1868 for (i = 0; i < s->no_comps; i++) {
1869 if (s->comps[i].fileno != f->fileno)
1870 continue;
1871 if (io_u->offset == s->comps[i].offset)
1872 return 0;
1873 }
1874
1875 /*
1876 * Not found, we have to stop
1877 */
1878 return 1;
1879}
fio - Flexible IO Tester