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Catch NULL td->o.ioengine
[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
17#include "crc/md5.h"
18#include "crc/crc64.h"
19#include "crc/crc32.h"
20#include "crc/crc32c.h"
21#include "crc/crc16.h"
22#include "crc/crc7.h"
23#include "crc/sha256.h"
24#include "crc/sha512.h"
25#include "crc/sha1.h"
26
27static void populate_hdr(struct thread_data *td, struct io_u *io_u,
28 struct verify_header *hdr, unsigned int header_num,
29 unsigned int header_len);
30
31void fill_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed)
32{
33 switch (td->o.verify_pattern_bytes) {
34 case 0:
35 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
36 if (use_seed)
37 __fill_random_buf(p, len, seed);
38 else
39 io_u->rand_seed = fill_random_buf(&td->buf_state, p, len);
40 break;
41 case 1:
42 if (io_u->buf_filled_len >= len) {
43 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
44 return;
45 }
46 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
47 memset(p, td->o.verify_pattern[0], len);
48 io_u->buf_filled_len = len;
49 break;
50 default: {
51 unsigned int i = 0, size = 0;
52 unsigned char *b = p;
53
54 if (io_u->buf_filled_len >= len) {
55 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
56 td->o.verify_pattern_bytes, len);
57 return;
58 }
59
60 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
61 td->o.verify_pattern_bytes, len);
62
63 while (i < len) {
64 size = td->o.verify_pattern_bytes;
65 if (size > (len - i))
66 size = len - i;
67 memcpy(b+i, td->o.verify_pattern, size);
68 i += size;
69 }
70 io_u->buf_filled_len = len;
71 break;
72 }
73 }
74}
75
76static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
77{
78 unsigned int hdr_inc;
79
80 hdr_inc = io_u->buflen;
81 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
82 hdr_inc = td->o.verify_interval;
83
84 return hdr_inc;
85}
86
87static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
88 unsigned long seed, int use_seed)
89{
90 unsigned int hdr_inc, header_num;
91 struct verify_header *hdr;
92 void *p = io_u->buf;
93
94 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
95
96 hdr_inc = get_hdr_inc(td, io_u);
97 header_num = 0;
98 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
99 hdr = p;
100 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
101 header_num++;
102 }
103}
104
105static void memswp(void *buf1, void *buf2, unsigned int len)
106{
107 char swap[200];
108
109 assert(len <= sizeof(swap));
110
111 memcpy(&swap, buf1, len);
112 memcpy(buf1, buf2, len);
113 memcpy(buf2, &swap, len);
114}
115
116static void hexdump(void *buffer, int len)
117{
118 unsigned char *p = buffer;
119 int i;
120
121 for (i = 0; i < len; i++)
122 log_err("%02x", p[i]);
123 log_err("\n");
124}
125
126/*
127 * Prepare for seperation of verify_header and checksum header
128 */
129static inline unsigned int __hdr_size(int verify_type)
130{
131 unsigned int len = 0;
132
133 switch (verify_type) {
134 case VERIFY_NONE:
135 case VERIFY_NULL:
136 len = 0;
137 break;
138 case VERIFY_MD5:
139 len = sizeof(struct vhdr_md5);
140 break;
141 case VERIFY_CRC64:
142 len = sizeof(struct vhdr_crc64);
143 break;
144 case VERIFY_CRC32C:
145 case VERIFY_CRC32:
146 case VERIFY_CRC32C_INTEL:
147 len = sizeof(struct vhdr_crc32);
148 break;
149 case VERIFY_CRC16:
150 len = sizeof(struct vhdr_crc16);
151 break;
152 case VERIFY_CRC7:
153 len = sizeof(struct vhdr_crc7);
154 break;
155 case VERIFY_SHA256:
156 len = sizeof(struct vhdr_sha256);
157 break;
158 case VERIFY_SHA512:
159 len = sizeof(struct vhdr_sha512);
160 break;
161 case VERIFY_META:
162 len = sizeof(struct vhdr_meta);
163 break;
164 case VERIFY_SHA1:
165 len = sizeof(struct vhdr_sha1);
166 break;
167 case VERIFY_PATTERN:
168 len = 0;
169 break;
170 default:
171 log_err("fio: unknown verify header!\n");
172 assert(0);
173 }
174
175 return len + sizeof(struct verify_header);
176}
177
178static inline unsigned int hdr_size(struct verify_header *hdr)
179{
180 return __hdr_size(hdr->verify_type);
181}
182
183static void *hdr_priv(struct verify_header *hdr)
184{
185 void *priv = hdr;
186
187 return priv + sizeof(struct verify_header);
188}
189
190/*
191 * Verify container, pass info to verify handlers and allow them to
192 * pass info back in case of error
193 */
194struct vcont {
195 /*
196 * Input
197 */
198 struct io_u *io_u;
199 unsigned int hdr_num;
200 struct thread_data *td;
201
202 /*
203 * Output, only valid in case of error
204 */
205 const char *name;
206 void *good_crc;
207 void *bad_crc;
208 unsigned int crc_len;
209};
210
211static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
212 const char *type, struct fio_file *f)
213{
214 char *ptr, fname[256];
215 int ret, fd;
216
217 ptr = strdup(f->file_name);
218 strcpy(fname, basename(ptr));
219
220 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
221
222 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
223 if (fd < 0) {
224 perror("open verify buf file");
225 return;
226 }
227
228 while (len) {
229 ret = write(fd, buf, len);
230 if (!ret)
231 break;
232 else if (ret < 0) {
233 perror("write verify buf file");
234 break;
235 }
236 len -= ret;
237 buf += ret;
238 }
239
240 close(fd);
241 log_err(" %s data dumped as %s\n", type, fname);
242 free(ptr);
243}
244
245/*
246 * Dump the contents of the read block and re-generate the correct data
247 * and dump that too.
248 */
249static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
250{
251 struct thread_data *td = vc->td;
252 struct io_u *io_u = vc->io_u;
253 unsigned long hdr_offset;
254 struct io_u dummy;
255 void *buf;
256
257 if (!td->o.verify_dump)
258 return;
259
260 /*
261 * Dump the contents we just read off disk
262 */
263 hdr_offset = vc->hdr_num * hdr->len;
264
265 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
266 "received", vc->io_u->file);
267
268 /*
269 * Allocate a new buf and re-generate the original data
270 */
271 buf = malloc(io_u->buflen);
272 dummy = *io_u;
273 dummy.buf = buf;
274 dummy.rand_seed = hdr->rand_seed;
275 dummy.buf_filled_len = 0;
276
277 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
278
279 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
280 "expected", vc->io_u->file);
281 free(buf);
282}
283
284static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
285{
286 unsigned long long offset;
287
288 offset = vc->io_u->offset;
289 offset += vc->hdr_num * hdr->len;
290 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
291 vc->name, vc->io_u->file->file_name, offset, hdr->len);
292
293 if (vc->good_crc && vc->bad_crc) {
294 log_err(" Expected CRC: ");
295 hexdump(vc->good_crc, vc->crc_len);
296 log_err(" Received CRC: ");
297 hexdump(vc->bad_crc, vc->crc_len);
298 }
299
300 dump_verify_buffers(hdr, vc);
301}
302
303/*
304 * Return data area 'header_num'
305 */
306static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
307{
308 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
309}
310
311static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
312{
313 struct thread_data *td = vc->td;
314 struct io_u *io_u = vc->io_u;
315 char *buf, *pattern;
316 unsigned int header_size = __hdr_size(td->o.verify);
317 unsigned int len, mod, i, size, pattern_size;
318
319 pattern = td->o.verify_pattern;
320 pattern_size = td->o.verify_pattern_bytes;
321 if (pattern_size <= 1)
322 pattern_size = MAX_PATTERN_SIZE;
323 buf = (void *) hdr + header_size;
324 len = get_hdr_inc(td, io_u) - header_size;
325 mod = header_size % pattern_size;
326
327 for (i = 0; i < len; i += size) {
328 size = pattern_size - mod;
329 if (size > (len - i))
330 size = len - i;
331 if (memcmp(buf + i, pattern + mod, size))
332 /* Let the slow compare find the first mismatch byte. */
333 break;
334 mod = 0;
335 }
336
337 for (; i < len; i++) {
338 if (buf[i] != pattern[mod]) {
339 unsigned int bits;
340
341 bits = hweight8(buf[i] ^ pattern[mod]);
342 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
343 buf[i], pattern[mod], bits);
344 log_err("fio: bad pattern block offset %u\n", i);
345 dump_verify_buffers(hdr, vc);
346 return EILSEQ;
347 }
348 mod++;
349 if (mod == td->o.verify_pattern_bytes)
350 mod = 0;
351 }
352
353 return 0;
354}
355
356static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
357{
358 struct thread_data *td = vc->td;
359 struct vhdr_meta *vh = hdr_priv(hdr);
360 struct io_u *io_u = vc->io_u;
361 int ret = EILSEQ;
362
363 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
364
365 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
366 ret = 0;
367
368 if (td->o.verify_pattern_bytes)
369 ret |= verify_io_u_pattern(hdr, vc);
370
371 if (!ret)
372 return 0;
373
374 vc->name = "meta";
375 log_verify_failure(hdr, vc);
376 return ret;
377}
378
379static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
380{
381 void *p = io_u_verify_off(hdr, vc);
382 struct vhdr_sha512 *vh = hdr_priv(hdr);
383 uint8_t sha512[128];
384 struct fio_sha512_ctx sha512_ctx = {
385 .buf = sha512,
386 };
387
388 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
389
390 fio_sha512_init(&sha512_ctx);
391 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
392
393 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
394 return 0;
395
396 vc->name = "sha512";
397 vc->good_crc = vh->sha512;
398 vc->bad_crc = sha512_ctx.buf;
399 vc->crc_len = sizeof(vh->sha512);
400 log_verify_failure(hdr, vc);
401 return EILSEQ;
402}
403
404static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
405{
406 void *p = io_u_verify_off(hdr, vc);
407 struct vhdr_sha256 *vh = hdr_priv(hdr);
408 uint8_t sha256[64];
409 struct fio_sha256_ctx sha256_ctx = {
410 .buf = sha256,
411 };
412
413 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
414
415 fio_sha256_init(&sha256_ctx);
416 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
417
418 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
419 return 0;
420
421 vc->name = "sha256";
422 vc->good_crc = vh->sha256;
423 vc->bad_crc = sha256_ctx.buf;
424 vc->crc_len = sizeof(vh->sha256);
425 log_verify_failure(hdr, vc);
426 return EILSEQ;
427}
428
429static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
430{
431 void *p = io_u_verify_off(hdr, vc);
432 struct vhdr_sha1 *vh = hdr_priv(hdr);
433 uint32_t sha1[5];
434 struct fio_sha1_ctx sha1_ctx = {
435 .H = sha1,
436 };
437
438 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
439
440 fio_sha1_init(&sha1_ctx);
441 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
442
443 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
444 return 0;
445
446 vc->name = "sha1";
447 vc->good_crc = vh->sha1;
448 vc->bad_crc = sha1_ctx.H;
449 vc->crc_len = sizeof(vh->sha1);
450 log_verify_failure(hdr, vc);
451 return EILSEQ;
452}
453
454static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
455{
456 void *p = io_u_verify_off(hdr, vc);
457 struct vhdr_crc7 *vh = hdr_priv(hdr);
458 unsigned char c;
459
460 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
461
462 c = fio_crc7(p, hdr->len - hdr_size(hdr));
463
464 if (c == vh->crc7)
465 return 0;
466
467 vc->name = "crc7";
468 vc->good_crc = &vh->crc7;
469 vc->bad_crc = &c;
470 vc->crc_len = 1;
471 log_verify_failure(hdr, vc);
472 return EILSEQ;
473}
474
475static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
476{
477 void *p = io_u_verify_off(hdr, vc);
478 struct vhdr_crc16 *vh = hdr_priv(hdr);
479 unsigned short c;
480
481 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
482
483 c = fio_crc16(p, hdr->len - hdr_size(hdr));
484
485 if (c == vh->crc16)
486 return 0;
487
488 vc->name = "crc16";
489 vc->good_crc = &vh->crc16;
490 vc->bad_crc = &c;
491 vc->crc_len = 2;
492 log_verify_failure(hdr, vc);
493 return EILSEQ;
494}
495
496static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
497{
498 void *p = io_u_verify_off(hdr, vc);
499 struct vhdr_crc64 *vh = hdr_priv(hdr);
500 unsigned long long c;
501
502 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
503
504 c = fio_crc64(p, hdr->len - hdr_size(hdr));
505
506 if (c == vh->crc64)
507 return 0;
508
509 vc->name = "crc64";
510 vc->good_crc = &vh->crc64;
511 vc->bad_crc = &c;
512 vc->crc_len = 8;
513 log_verify_failure(hdr, vc);
514 return EILSEQ;
515}
516
517static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
518{
519 void *p = io_u_verify_off(hdr, vc);
520 struct vhdr_crc32 *vh = hdr_priv(hdr);
521 uint32_t c;
522
523 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
524
525 c = fio_crc32(p, hdr->len - hdr_size(hdr));
526
527 if (c == vh->crc32)
528 return 0;
529
530 vc->name = "crc32";
531 vc->good_crc = &vh->crc32;
532 vc->bad_crc = &c;
533 vc->crc_len = 4;
534 log_verify_failure(hdr, vc);
535 return EILSEQ;
536}
537
538static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
539{
540 void *p = io_u_verify_off(hdr, vc);
541 struct vhdr_crc32 *vh = hdr_priv(hdr);
542 uint32_t c;
543
544 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
545
546 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
547
548 if (c == vh->crc32)
549 return 0;
550
551 vc->name = "crc32c";
552 vc->good_crc = &vh->crc32;
553 vc->bad_crc = &c;
554 vc->crc_len = 4;
555 log_verify_failure(hdr, vc);
556 return EILSEQ;
557}
558
559static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
560{
561 void *p = io_u_verify_off(hdr, vc);
562 struct vhdr_md5 *vh = hdr_priv(hdr);
563 uint32_t hash[MD5_HASH_WORDS];
564 struct fio_md5_ctx md5_ctx = {
565 .hash = hash,
566 };
567
568 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
569
570 fio_md5_init(&md5_ctx);
571 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
572
573 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
574 return 0;
575
576 vc->name = "md5";
577 vc->good_crc = vh->md5_digest;
578 vc->bad_crc = md5_ctx.hash;
579 vc->crc_len = sizeof(hash);
580 log_verify_failure(hdr, vc);
581 return EILSEQ;
582}
583
584/*
585 * Push IO verification to a separate thread
586 */
587int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
588{
589 if (io_u->file)
590 put_file_log(td, io_u->file);
591
592 pthread_mutex_lock(&td->io_u_lock);
593
594 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
595 td->cur_depth--;
596 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
597 }
598 flist_del(&io_u->list);
599 flist_add_tail(&io_u->list, &td->verify_list);
600 io_u->flags |= IO_U_F_FREE_DEF;
601 pthread_mutex_unlock(&td->io_u_lock);
602
603 pthread_cond_signal(&td->verify_cond);
604 return 0;
605}
606
607static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
608{
609 static char zero_buf[1024];
610 unsigned int this_len, len;
611 int ret = 0;
612 void *p;
613
614 if (!td->o.trim_zero)
615 return 0;
616
617 len = io_u->buflen;
618 p = io_u->buf;
619 do {
620 this_len = sizeof(zero_buf);
621 if (this_len > len)
622 this_len = len;
623 if (memcmp(p, zero_buf, this_len)) {
624 ret = EILSEQ;
625 break;
626 }
627 len -= this_len;
628 p += this_len;
629 } while (len);
630
631 if (!ret)
632 return 0;
633
634 log_err("trim: verify failed at file %s offset %llu, length %lu"
635 ", block offset %lu\n",
636 io_u->file->file_name, io_u->offset, io_u->buflen,
637 (unsigned long) (p - io_u->buf));
638 return ret;
639}
640
641static int verify_header(struct io_u *io_u, struct verify_header *hdr)
642{
643 void *p = hdr;
644 uint32_t crc;
645
646 if (hdr->magic != FIO_HDR_MAGIC)
647 return 0;
648 if (hdr->len > io_u->buflen) {
649 log_err("fio: verify header exceeds buffer length (%u > %lu)\n", hdr->len, io_u->buflen);
650 return 0;
651 }
652
653 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
654 if (crc == hdr->crc32)
655 return 1;
656
657 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
658 return 0;
659}
660
661int verify_io_u(struct thread_data *td, struct io_u *io_u)
662{
663 struct verify_header *hdr;
664 unsigned int header_size, hdr_inc, hdr_num = 0;
665 void *p;
666 int ret;
667
668 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
669 return 0;
670 if (io_u->flags & IO_U_F_TRIMMED) {
671 ret = verify_trimmed_io_u(td, io_u);
672 goto done;
673 }
674
675 hdr_inc = get_hdr_inc(td, io_u);
676
677 ret = 0;
678 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
679 p += hdr_inc, hdr_num++) {
680 struct vcont vc = {
681 .io_u = io_u,
682 .hdr_num = hdr_num,
683 .td = td,
684 };
685 unsigned int verify_type;
686
687 if (ret && td->o.verify_fatal)
688 break;
689
690 header_size = __hdr_size(td->o.verify);
691 if (td->o.verify_offset)
692 memswp(p, p + td->o.verify_offset, header_size);
693 hdr = p;
694
695 if (!verify_header(io_u, hdr)) {
696 log_err("verify: bad magic header %x, wanted %x at "
697 "file %s offset %llu, length %u\n",
698 hdr->magic, FIO_HDR_MAGIC,
699 io_u->file->file_name,
700 io_u->offset + hdr_num * hdr->len, hdr->len);
701 return EILSEQ;
702 }
703
704 if (td->o.verify != VERIFY_NONE)
705 verify_type = td->o.verify;
706 else
707 verify_type = hdr->verify_type;
708
709 switch (verify_type) {
710 case VERIFY_MD5:
711 ret = verify_io_u_md5(hdr, &vc);
712 break;
713 case VERIFY_CRC64:
714 ret = verify_io_u_crc64(hdr, &vc);
715 break;
716 case VERIFY_CRC32C:
717 case VERIFY_CRC32C_INTEL:
718 ret = verify_io_u_crc32c(hdr, &vc);
719 break;
720 case VERIFY_CRC32:
721 ret = verify_io_u_crc32(hdr, &vc);
722 break;
723 case VERIFY_CRC16:
724 ret = verify_io_u_crc16(hdr, &vc);
725 break;
726 case VERIFY_CRC7:
727 ret = verify_io_u_crc7(hdr, &vc);
728 break;
729 case VERIFY_SHA256:
730 ret = verify_io_u_sha256(hdr, &vc);
731 break;
732 case VERIFY_SHA512:
733 ret = verify_io_u_sha512(hdr, &vc);
734 break;
735 case VERIFY_META:
736 ret = verify_io_u_meta(hdr, &vc);
737 break;
738 case VERIFY_SHA1:
739 ret = verify_io_u_sha1(hdr, &vc);
740 break;
741 case VERIFY_PATTERN:
742 ret = verify_io_u_pattern(hdr, &vc);
743 break;
744 default:
745 log_err("Bad verify type %u\n", hdr->verify_type);
746 ret = EINVAL;
747 }
748
749 if (ret && verify_type != hdr->verify_type)
750 log_err("fio: verify type mismatch (%u media, %u given)\n",
751 hdr->verify_type, verify_type);
752 }
753
754done:
755 if (ret && td->o.verify_fatal)
756 td->terminate = 1;
757
758 return ret;
759}
760
761static void fill_meta(struct verify_header *hdr, struct thread_data *td,
762 struct io_u *io_u, unsigned int header_num)
763{
764 struct vhdr_meta *vh = hdr_priv(hdr);
765
766 vh->thread = td->thread_number;
767
768 vh->time_sec = io_u->start_time.tv_sec;
769 vh->time_usec = io_u->start_time.tv_usec;
770
771 vh->numberio = td->io_issues[DDIR_WRITE];
772
773 vh->offset = io_u->offset + header_num * td->o.verify_interval;
774}
775
776static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
777{
778 struct vhdr_sha512 *vh = hdr_priv(hdr);
779 struct fio_sha512_ctx sha512_ctx = {
780 .buf = vh->sha512,
781 };
782
783 fio_sha512_init(&sha512_ctx);
784 fio_sha512_update(&sha512_ctx, p, len);
785}
786
787static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
788{
789 struct vhdr_sha256 *vh = hdr_priv(hdr);
790 struct fio_sha256_ctx sha256_ctx = {
791 .buf = vh->sha256,
792 };
793
794 fio_sha256_init(&sha256_ctx);
795 fio_sha256_update(&sha256_ctx, p, len);
796}
797
798static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
799{
800 struct vhdr_sha1 *vh = hdr_priv(hdr);
801 struct fio_sha1_ctx sha1_ctx = {
802 .H = vh->sha1,
803 };
804
805 fio_sha1_init(&sha1_ctx);
806 fio_sha1_update(&sha1_ctx, p, len);
807}
808
809static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
810{
811 struct vhdr_crc7 *vh = hdr_priv(hdr);
812
813 vh->crc7 = fio_crc7(p, len);
814}
815
816static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
817{
818 struct vhdr_crc16 *vh = hdr_priv(hdr);
819
820 vh->crc16 = fio_crc16(p, len);
821}
822
823static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
824{
825 struct vhdr_crc32 *vh = hdr_priv(hdr);
826
827 vh->crc32 = fio_crc32(p, len);
828}
829
830static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
831{
832 struct vhdr_crc32 *vh = hdr_priv(hdr);
833
834 vh->crc32 = fio_crc32c(p, len);
835}
836
837static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
838{
839 struct vhdr_crc64 *vh = hdr_priv(hdr);
840
841 vh->crc64 = fio_crc64(p, len);
842}
843
844static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
845{
846 struct vhdr_md5 *vh = hdr_priv(hdr);
847 struct fio_md5_ctx md5_ctx = {
848 .hash = (uint32_t *) vh->md5_digest,
849 };
850
851 fio_md5_init(&md5_ctx);
852 fio_md5_update(&md5_ctx, p, len);
853}
854
855static void populate_hdr(struct thread_data *td, struct io_u *io_u,
856 struct verify_header *hdr, unsigned int header_num,
857 unsigned int header_len)
858{
859 unsigned int data_len;
860 void *data, *p;
861
862 p = (void *) hdr;
863
864 hdr->magic = FIO_HDR_MAGIC;
865 hdr->verify_type = td->o.verify;
866 hdr->len = header_len;
867 hdr->rand_seed = io_u->rand_seed;
868 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
869
870 data_len = header_len - hdr_size(hdr);
871
872 data = p + hdr_size(hdr);
873 switch (td->o.verify) {
874 case VERIFY_MD5:
875 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
876 io_u, hdr->len);
877 fill_md5(hdr, data, data_len);
878 break;
879 case VERIFY_CRC64:
880 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
881 io_u, hdr->len);
882 fill_crc64(hdr, data, data_len);
883 break;
884 case VERIFY_CRC32C:
885 case VERIFY_CRC32C_INTEL:
886 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
887 io_u, hdr->len);
888 fill_crc32c(hdr, data, data_len);
889 break;
890 case VERIFY_CRC32:
891 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
892 io_u, hdr->len);
893 fill_crc32(hdr, data, data_len);
894 break;
895 case VERIFY_CRC16:
896 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
897 io_u, hdr->len);
898 fill_crc16(hdr, data, data_len);
899 break;
900 case VERIFY_CRC7:
901 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
902 io_u, hdr->len);
903 fill_crc7(hdr, data, data_len);
904 break;
905 case VERIFY_SHA256:
906 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
907 io_u, hdr->len);
908 fill_sha256(hdr, data, data_len);
909 break;
910 case VERIFY_SHA512:
911 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
912 io_u, hdr->len);
913 fill_sha512(hdr, data, data_len);
914 break;
915 case VERIFY_META:
916 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
917 io_u, hdr->len);
918 fill_meta(hdr, td, io_u, header_num);
919 break;
920 case VERIFY_SHA1:
921 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
922 io_u, hdr->len);
923 fill_sha1(hdr, data, data_len);
924 break;
925 case VERIFY_PATTERN:
926 /* nothing to do here */
927 break;
928 default:
929 log_err("fio: bad verify type: %d\n", td->o.verify);
930 assert(0);
931 }
932 if (td->o.verify_offset)
933 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
934}
935
936/*
937 * fill body of io_u->buf with random data and add a header with the
938 * checksum of choice
939 */
940void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
941{
942 if (td->o.verify == VERIFY_NULL)
943 return;
944
945 fill_pattern_headers(td, io_u, 0, 0);
946}
947
948int get_next_verify(struct thread_data *td, struct io_u *io_u)
949{
950 struct io_piece *ipo = NULL;
951
952 /*
953 * this io_u is from a requeue, we already filled the offsets
954 */
955 if (io_u->file)
956 return 0;
957
958 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
959 struct rb_node *n = rb_first(&td->io_hist_tree);
960
961 ipo = rb_entry(n, struct io_piece, rb_node);
962 rb_erase(n, &td->io_hist_tree);
963 assert(ipo->flags & IP_F_ONRB);
964 ipo->flags &= ~IP_F_ONRB;
965 } else if (!flist_empty(&td->io_hist_list)) {
966 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
967 flist_del(&ipo->list);
968 assert(ipo->flags & IP_F_ONLIST);
969 ipo->flags &= ~IP_F_ONLIST;
970 }
971
972 if (ipo) {
973 td->io_hist_len--;
974
975 io_u->offset = ipo->offset;
976 io_u->buflen = ipo->len;
977 io_u->file = ipo->file;
978 io_u->flags |= IO_U_F_VER_LIST;
979
980 if (ipo->flags & IP_F_TRIMMED)
981 io_u->flags |= IO_U_F_TRIMMED;
982
983 if (!fio_file_open(io_u->file)) {
984 int r = td_io_open_file(td, io_u->file);
985
986 if (r) {
987 dprint(FD_VERIFY, "failed file %s open\n",
988 io_u->file->file_name);
989 return 1;
990 }
991 }
992
993 get_file(ipo->file);
994 assert(fio_file_open(io_u->file));
995 io_u->ddir = DDIR_READ;
996 io_u->xfer_buf = io_u->buf;
997 io_u->xfer_buflen = io_u->buflen;
998
999 remove_trim_entry(td, ipo);
1000 free(ipo);
1001 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1002 return 0;
1003 }
1004
1005 dprint(FD_VERIFY, "get_next_verify: empty\n");
1006 return 1;
1007}
1008
1009void fio_verify_init(struct thread_data *td)
1010{
1011 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1012 td->o.verify == VERIFY_CRC32C) {
1013 crc32c_intel_probe();
1014 }
1015}
1016
1017static void *verify_async_thread(void *data)
1018{
1019 struct thread_data *td = data;
1020 struct io_u *io_u;
1021 int ret = 0;
1022
1023 if (td->o.verify_cpumask_set &&
1024 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1025 log_err("fio: failed setting verify thread affinity\n");
1026 goto done;
1027 }
1028
1029 do {
1030 FLIST_HEAD(list);
1031
1032 read_barrier();
1033 if (td->verify_thread_exit)
1034 break;
1035
1036 pthread_mutex_lock(&td->io_u_lock);
1037
1038 while (flist_empty(&td->verify_list) &&
1039 !td->verify_thread_exit) {
1040 ret = pthread_cond_wait(&td->verify_cond,
1041 &td->io_u_lock);
1042 if (ret) {
1043 pthread_mutex_unlock(&td->io_u_lock);
1044 break;
1045 }
1046 }
1047
1048 flist_splice_init(&td->verify_list, &list);
1049 pthread_mutex_unlock(&td->io_u_lock);
1050
1051 if (flist_empty(&list))
1052 continue;
1053
1054 while (!flist_empty(&list)) {
1055 io_u = flist_entry(list.next, struct io_u, list);
1056 flist_del_init(&io_u->list);
1057
1058 ret = verify_io_u(td, io_u);
1059 put_io_u(td, io_u);
1060 if (!ret)
1061 continue;
1062 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1063 update_error_count(td, ret);
1064 td_clear_error(td);
1065 ret = 0;
1066 }
1067 }
1068 } while (!ret);
1069
1070 if (ret) {
1071 td_verror(td, ret, "async_verify");
1072 if (td->o.verify_fatal)
1073 td->terminate = 1;
1074 }
1075
1076done:
1077 pthread_mutex_lock(&td->io_u_lock);
1078 td->nr_verify_threads--;
1079 pthread_mutex_unlock(&td->io_u_lock);
1080
1081 pthread_cond_signal(&td->free_cond);
1082 return NULL;
1083}
1084
1085int verify_async_init(struct thread_data *td)
1086{
1087 int i, ret;
1088 pthread_attr_t attr;
1089
1090 pthread_attr_init(&attr);
1091 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1092
1093 td->verify_thread_exit = 0;
1094
1095 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1096 for (i = 0; i < td->o.verify_async; i++) {
1097 ret = pthread_create(&td->verify_threads[i], &attr,
1098 verify_async_thread, td);
1099 if (ret) {
1100 log_err("fio: async verify creation failed: %s\n",
1101 strerror(ret));
1102 break;
1103 }
1104 ret = pthread_detach(td->verify_threads[i]);
1105 if (ret) {
1106 log_err("fio: async verify thread detach failed: %s\n",
1107 strerror(ret));
1108 break;
1109 }
1110 td->nr_verify_threads++;
1111 }
1112
1113 pthread_attr_destroy(&attr);
1114
1115 if (i != td->o.verify_async) {
1116 log_err("fio: only %d verify threads started, exiting\n", i);
1117 td->verify_thread_exit = 1;
1118 write_barrier();
1119 pthread_cond_broadcast(&td->verify_cond);
1120 return 1;
1121 }
1122
1123 return 0;
1124}
1125
1126void verify_async_exit(struct thread_data *td)
1127{
1128 td->verify_thread_exit = 1;
1129 write_barrier();
1130 pthread_cond_broadcast(&td->verify_cond);
1131
1132 pthread_mutex_lock(&td->io_u_lock);
1133
1134 while (td->nr_verify_threads)
1135 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1136
1137 pthread_mutex_unlock(&td->io_u_lock);
1138 free(td->verify_threads);
1139 td->verify_threads = NULL;
1140}
fio - Flexible IO Tester