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Cleanup some verify bits
[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 "smalloc.h"
14#include "trim.h"
15#include "lib/rand.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(p, len);
40 break;
41 case 1:
42 /*
43 * See below write barrier comment
44 */
45#if 0
46 read_barrier();
47 if (io_u->buf_filled_len >= len) {
48 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
49 return;
50 }
51#endif
52 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
53 memset(p, td->o.verify_pattern[0], len);
54 /*
55 * We need to ensure that the pattern stores are seen before
56 * the fill length store, or we could observe headers that
57 * aren't valid to the extent notified by the fill length
58 */
59 write_barrier();
60 io_u->buf_filled_len = len;
61 break;
62 default: {
63 unsigned int i = 0, size = 0;
64 unsigned char *b = p;
65
66#if 0
67 read_barrier();
68 if (io_u->buf_filled_len >= len) {
69 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
70 td->o.verify_pattern_bytes, len);
71 return;
72 }
73#endif
74 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
75 td->o.verify_pattern_bytes, len);
76
77 while (i < len) {
78 size = td->o.verify_pattern_bytes;
79 if (size > (len - i))
80 size = len - i;
81 memcpy(b+i, td->o.verify_pattern, size);
82 i += size;
83 }
84 write_barrier();
85 io_u->buf_filled_len = len;
86 break;
87 }
88 }
89}
90
91static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
92{
93 unsigned int hdr_inc;
94
95 hdr_inc = io_u->buflen;
96 if (td->o.verify_interval)
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_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 seperation 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_NULL:
151 len = 0;
152 break;
153 case VERIFY_MD5:
154 len = sizeof(struct vhdr_md5);
155 break;
156 case VERIFY_CRC64:
157 len = sizeof(struct vhdr_crc64);
158 break;
159 case VERIFY_CRC32C:
160 case VERIFY_CRC32:
161 case VERIFY_CRC32C_INTEL:
162 len = sizeof(struct vhdr_crc32);
163 break;
164 case VERIFY_CRC16:
165 len = sizeof(struct vhdr_crc16);
166 break;
167 case VERIFY_CRC7:
168 len = sizeof(struct vhdr_crc7);
169 break;
170 case VERIFY_SHA256:
171 len = sizeof(struct vhdr_sha256);
172 break;
173 case VERIFY_SHA512:
174 len = sizeof(struct vhdr_sha512);
175 break;
176 case VERIFY_META:
177 len = sizeof(struct vhdr_meta);
178 break;
179 case VERIFY_SHA1:
180 len = sizeof(struct vhdr_sha1);
181 break;
182 default:
183 log_err("fio: unknown verify header!\n");
184 assert(0);
185 }
186
187 return len + sizeof(struct verify_header);
188}
189
190static inline unsigned int hdr_size(struct verify_header *hdr)
191{
192 return __hdr_size(hdr->verify_type);
193}
194
195static void *hdr_priv(struct verify_header *hdr)
196{
197 void *priv = hdr;
198
199 return priv + sizeof(struct verify_header);
200}
201
202/*
203 * Verify container, pass info to verify handlers and allow them to
204 * pass info back in case of error
205 */
206struct vcont {
207 /*
208 * Input
209 */
210 struct io_u *io_u;
211 unsigned int hdr_num;
212 struct thread_data *td;
213
214 /*
215 * Output, only valid in case of error
216 */
217 const char *name;
218 void *good_crc;
219 void *bad_crc;
220 unsigned int crc_len;
221};
222
223static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
224 const char *type, struct fio_file *f)
225{
226 char *ptr, fname[256];
227 int ret, fd;
228
229 ptr = strdup(f->file_name);
230 strcpy(fname, basename(ptr));
231
232 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
233
234 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
235 if (fd < 0) {
236 perror("open verify buf file");
237 return;
238 }
239
240 while (len) {
241 ret = write(fd, buf, len);
242 if (!ret)
243 break;
244 else if (ret < 0) {
245 perror("write verify buf file");
246 break;
247 }
248 len -= ret;
249 buf += ret;
250 }
251
252 close(fd);
253 log_err(" %s data dumped as %s\n", type, fname);
254 free(ptr);
255}
256
257/*
258 * Dump the contents of the read block and re-generate the correct data
259 * and dump that too.
260 */
261static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
262{
263 struct thread_data *td = vc->td;
264 struct io_u *io_u = vc->io_u;
265 unsigned long hdr_offset;
266 struct io_u dummy;
267 void *buf;
268
269 /*
270 * Dump the contents we just read off disk
271 */
272 hdr_offset = vc->hdr_num * hdr->len;
273
274 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
275 "received", vc->io_u->file);
276
277 /*
278 * Allocate a new buf and re-generate the original data
279 */
280 buf = malloc(io_u->buflen);
281 dummy = *io_u;
282 dummy.buf = buf;
283 dummy.rand_seed = hdr->rand_seed;
284 dummy.buf_filled_len = 0;
285
286 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
287
288 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
289 "expected", vc->io_u->file);
290 free(buf);
291}
292
293static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
294{
295 unsigned long long offset;
296
297 offset = vc->io_u->offset;
298 offset += vc->hdr_num * hdr->len;
299 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
300 vc->name, vc->io_u->file->file_name, offset, hdr->len);
301
302 if (vc->good_crc && vc->bad_crc) {
303 log_err(" Expected CRC: ");
304 hexdump(vc->good_crc, vc->crc_len);
305 log_err(" Received CRC: ");
306 hexdump(vc->bad_crc, vc->crc_len);
307 }
308
309 dump_verify_buffers(hdr, vc);
310}
311
312/*
313 * Return data area 'header_num'
314 */
315static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
316{
317 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
318}
319
320static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
321 struct vcont *vc)
322{
323 struct vhdr_meta *vh = hdr_priv(hdr);
324 struct io_u *io_u = vc->io_u;
325
326 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
327
328 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
329 return 0;
330
331 vc->name = "meta";
332 log_verify_failure(hdr, vc);
333 return EILSEQ;
334}
335
336static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
337{
338 void *p = io_u_verify_off(hdr, vc);
339 struct vhdr_sha512 *vh = hdr_priv(hdr);
340 uint8_t sha512[128];
341 struct sha512_ctx sha512_ctx = {
342 .buf = sha512,
343 };
344
345 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
346
347 sha512_init(&sha512_ctx);
348 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
349
350 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
351 return 0;
352
353 vc->name = "sha512";
354 vc->good_crc = vh->sha512;
355 vc->bad_crc = sha512_ctx.buf;
356 vc->crc_len = sizeof(vh->sha512);
357 log_verify_failure(hdr, vc);
358 return EILSEQ;
359}
360
361static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
362{
363 void *p = io_u_verify_off(hdr, vc);
364 struct vhdr_sha256 *vh = hdr_priv(hdr);
365 uint8_t sha256[64];
366 struct sha256_ctx sha256_ctx = {
367 .buf = sha256,
368 };
369
370 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
371
372 sha256_init(&sha256_ctx);
373 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
374
375 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
376 return 0;
377
378 vc->name = "sha256";
379 vc->good_crc = vh->sha256;
380 vc->bad_crc = sha256_ctx.buf;
381 vc->crc_len = sizeof(vh->sha256);
382 log_verify_failure(hdr, vc);
383 return EILSEQ;
384}
385
386static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
387{
388 void *p = io_u_verify_off(hdr, vc);
389 struct vhdr_sha1 *vh = hdr_priv(hdr);
390 uint32_t sha1[5];
391 struct sha1_ctx sha1_ctx = {
392 .H = sha1,
393 };
394
395 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
396
397 sha1_init(&sha1_ctx);
398 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
399
400 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
401 return 0;
402
403 vc->name = "sha1";
404 vc->good_crc = vh->sha1;
405 vc->bad_crc = sha1_ctx.H;
406 vc->crc_len = sizeof(vh->sha1);
407 log_verify_failure(hdr, vc);
408 return EILSEQ;
409}
410
411static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
412{
413 void *p = io_u_verify_off(hdr, vc);
414 struct vhdr_crc7 *vh = hdr_priv(hdr);
415 unsigned char c;
416
417 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
418
419 c = crc7(p, hdr->len - hdr_size(hdr));
420
421 if (c == vh->crc7)
422 return 0;
423
424 vc->name = "crc7";
425 vc->good_crc = &vh->crc7;
426 vc->bad_crc = &c;
427 vc->crc_len = 1;
428 log_verify_failure(hdr, vc);
429 return EILSEQ;
430}
431
432static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
433{
434 void *p = io_u_verify_off(hdr, vc);
435 struct vhdr_crc16 *vh = hdr_priv(hdr);
436 unsigned short c;
437
438 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
439
440 c = crc16(p, hdr->len - hdr_size(hdr));
441
442 if (c == vh->crc16)
443 return 0;
444
445 vc->name = "crc16";
446 vc->good_crc = &vh->crc16;
447 vc->bad_crc = &c;
448 vc->crc_len = 2;
449 log_verify_failure(hdr, vc);
450 return EILSEQ;
451}
452
453static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
454{
455 void *p = io_u_verify_off(hdr, vc);
456 struct vhdr_crc64 *vh = hdr_priv(hdr);
457 unsigned long long c;
458
459 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
460
461 c = crc64(p, hdr->len - hdr_size(hdr));
462
463 if (c == vh->crc64)
464 return 0;
465
466 vc->name = "crc64";
467 vc->good_crc = &vh->crc64;
468 vc->bad_crc = &c;
469 vc->crc_len = 8;
470 log_verify_failure(hdr, vc);
471 return EILSEQ;
472}
473
474static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
475{
476 void *p = io_u_verify_off(hdr, vc);
477 struct vhdr_crc32 *vh = hdr_priv(hdr);
478 uint32_t c;
479
480 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
481
482 c = crc32(p, hdr->len - hdr_size(hdr));
483
484 if (c == vh->crc32)
485 return 0;
486
487 vc->name = "crc32";
488 vc->good_crc = &vh->crc32;
489 vc->bad_crc = &c;
490 vc->crc_len = 4;
491 log_verify_failure(hdr, vc);
492 return EILSEQ;
493}
494
495static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
496{
497 void *p = io_u_verify_off(hdr, vc);
498 struct vhdr_crc32 *vh = hdr_priv(hdr);
499 uint32_t c;
500
501 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
502
503 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
504 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
505 else
506 c = crc32c(p, hdr->len - hdr_size(hdr));
507
508 if (c == vh->crc32)
509 return 0;
510
511 vc->name = "crc32c";
512 vc->good_crc = &vh->crc32;
513 vc->bad_crc = &c;
514 vc->crc_len = 4;
515 log_verify_failure(hdr, vc);
516 return EILSEQ;
517}
518
519static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
520{
521 void *p = io_u_verify_off(hdr, vc);
522 struct vhdr_md5 *vh = hdr_priv(hdr);
523 uint32_t hash[MD5_HASH_WORDS];
524 struct md5_ctx md5_ctx = {
525 .hash = hash,
526 };
527
528 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
529
530 md5_init(&md5_ctx);
531 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
532
533 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
534 return 0;
535
536 vc->name = "md5";
537 vc->good_crc = vh->md5_digest;
538 vc->bad_crc = md5_ctx.hash;
539 vc->crc_len = sizeof(hash);
540 log_verify_failure(hdr, vc);
541 return EILSEQ;
542}
543
544static unsigned int hweight8(unsigned int w)
545{
546 unsigned int res = w - ((w >> 1) & 0x55);
547
548 res = (res & 0x33) + ((res >> 2) & 0x33);
549 return (res + (res >> 4)) & 0x0F;
550}
551
552int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
553{
554 struct thread_data *td = vc->td;
555 struct io_u *io_u = vc->io_u;
556 char *buf, *pattern;
557 unsigned int hdr_size = __hdr_size(td->o.verify);
558 unsigned int len, mod, i;
559
560 pattern = td->o.verify_pattern;
561 buf = (void *) hdr + hdr_size;
562 len = get_hdr_inc(td, io_u) - hdr_size;
563 mod = hdr_size % td->o.verify_pattern_bytes;
564
565 for (i = 0; i < len; i++) {
566 if (buf[i] != pattern[mod]) {
567 unsigned int bits;
568
569 bits = hweight8(buf[i] ^ pattern[mod]);
570 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
571 buf[i], pattern[mod], bits);
572 log_err("fio: bad pattern block offset %u\n", i);
573 dump_verify_buffers(hdr, vc);
574 return EILSEQ;
575 }
576 mod++;
577 if (mod == td->o.verify_pattern_bytes)
578 mod = 0;
579 }
580
581 return 0;
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 io_u->file = NULL;
593
594 pthread_mutex_lock(&td->io_u_lock);
595
596 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
597 td->cur_depth--;
598 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
599 }
600 flist_del(&io_u->list);
601 flist_add_tail(&io_u->list, &td->verify_list);
602 io_u->flags |= IO_U_F_FREE_DEF;
603 pthread_mutex_unlock(&td->io_u_lock);
604
605 pthread_cond_signal(&td->verify_cond);
606 return 0;
607}
608
609static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
610{
611 static char zero_buf[1024];
612 unsigned int this_len, len;
613 int ret = 0;
614 void *p;
615
616 if (!td->o.trim_zero)
617 return 0;
618
619 len = io_u->buflen;
620 p = io_u->buf;
621 do {
622 this_len = sizeof(zero_buf);
623 if (this_len > len)
624 this_len = len;
625 if (memcmp(p, zero_buf, this_len)) {
626 ret = EILSEQ;
627 break;
628 }
629 len -= this_len;
630 p += this_len;
631 } while (len);
632
633 if (!ret)
634 return 0;
635
636 log_err("trim: verify failed at file %s offset %llu, length %lu"
637 ", block offset %lu\n",
638 io_u->file->file_name, io_u->offset, io_u->buflen,
639 (unsigned long) (p - io_u->buf));
640 return ret;
641}
642
643int verify_io_u(struct thread_data *td, struct io_u *io_u)
644{
645 struct verify_header *hdr;
646 unsigned int hdr_size, hdr_inc, hdr_num = 0;
647 void *p;
648 int ret;
649
650 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
651 return 0;
652 if (io_u->flags & IO_U_F_TRIMMED) {
653 ret = verify_trimmed_io_u(td, io_u);
654 goto done;
655 }
656
657 hdr_inc = get_hdr_inc(td, io_u);
658
659 ret = 0;
660 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
661 p += hdr_inc, hdr_num++) {
662 struct vcont vc = {
663 .io_u = io_u,
664 .hdr_num = hdr_num,
665 .td = td,
666 };
667
668 if (ret && td->o.verify_fatal)
669 break;
670
671 hdr_size = __hdr_size(td->o.verify);
672 if (td->o.verify_offset)
673 memswp(p, p + td->o.verify_offset, hdr_size);
674 hdr = p;
675
676 if (hdr->fio_magic != FIO_HDR_MAGIC) {
677 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
678 hdr->fio_magic, FIO_HDR_MAGIC,
679 io_u->file->file_name,
680 io_u->offset + hdr_num * hdr->len, hdr->len);
681 return EILSEQ;
682 }
683
684 if (td->o.verify_pattern_bytes) {
685 dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
686 io_u, hdr->len);
687 ret = verify_io_u_pattern(hdr, &vc);
688 if (ret) {
689 log_err("pattern: verify failed at file %s offset %llu, length %u\n",
690 io_u->file->file_name,
691 io_u->offset + hdr_num * hdr->len,
692 hdr->len);
693 }
694
695 /*
696 * Also verify the meta data, if applicable
697 */
698 if (hdr->verify_type == VERIFY_META)
699 ret |= verify_io_u_meta(hdr, td, &vc);
700 continue;
701 }
702
703 switch (hdr->verify_type) {
704 case VERIFY_MD5:
705 ret = verify_io_u_md5(hdr, &vc);
706 break;
707 case VERIFY_CRC64:
708 ret = verify_io_u_crc64(hdr, &vc);
709 break;
710 case VERIFY_CRC32C:
711 case VERIFY_CRC32C_INTEL:
712 ret = verify_io_u_crc32c(hdr, &vc);
713 break;
714 case VERIFY_CRC32:
715 ret = verify_io_u_crc32(hdr, &vc);
716 break;
717 case VERIFY_CRC16:
718 ret = verify_io_u_crc16(hdr, &vc);
719 break;
720 case VERIFY_CRC7:
721 ret = verify_io_u_crc7(hdr, &vc);
722 break;
723 case VERIFY_SHA256:
724 ret = verify_io_u_sha256(hdr, &vc);
725 break;
726 case VERIFY_SHA512:
727 ret = verify_io_u_sha512(hdr, &vc);
728 break;
729 case VERIFY_META:
730 ret = verify_io_u_meta(hdr, td, &vc);
731 break;
732 case VERIFY_SHA1:
733 ret = verify_io_u_sha1(hdr, &vc);
734 break;
735 default:
736 log_err("Bad verify type %u\n", hdr->verify_type);
737 ret = EINVAL;
738 }
739 }
740
741done:
742 if (ret && td->o.verify_fatal)
743 td->terminate = 1;
744
745 return ret;
746}
747
748static void fill_meta(struct verify_header *hdr, struct thread_data *td,
749 struct io_u *io_u, unsigned int header_num)
750{
751 struct vhdr_meta *vh = hdr_priv(hdr);
752
753 vh->thread = td->thread_number;
754
755 vh->time_sec = io_u->start_time.tv_sec;
756 vh->time_usec = io_u->start_time.tv_usec;
757
758 vh->numberio = td->io_issues[DDIR_WRITE];
759
760 vh->offset = io_u->offset + header_num * td->o.verify_interval;
761}
762
763static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
764{
765 struct vhdr_sha512 *vh = hdr_priv(hdr);
766 struct sha512_ctx sha512_ctx = {
767 .buf = vh->sha512,
768 };
769
770 sha512_init(&sha512_ctx);
771 sha512_update(&sha512_ctx, p, len);
772}
773
774static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
775{
776 struct vhdr_sha256 *vh = hdr_priv(hdr);
777 struct sha256_ctx sha256_ctx = {
778 .buf = vh->sha256,
779 };
780
781 sha256_init(&sha256_ctx);
782 sha256_update(&sha256_ctx, p, len);
783}
784
785static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
786{
787 struct vhdr_sha1 *vh = hdr_priv(hdr);
788 struct sha1_ctx sha1_ctx = {
789 .H = vh->sha1,
790 };
791
792 sha1_init(&sha1_ctx);
793 sha1_update(&sha1_ctx, p, len);
794}
795
796static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
797{
798 struct vhdr_crc7 *vh = hdr_priv(hdr);
799
800 vh->crc7 = crc7(p, len);
801}
802
803static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
804{
805 struct vhdr_crc16 *vh = hdr_priv(hdr);
806
807 vh->crc16 = crc16(p, len);
808}
809
810static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
811{
812 struct vhdr_crc32 *vh = hdr_priv(hdr);
813
814 vh->crc32 = crc32(p, len);
815}
816
817static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
818{
819 struct vhdr_crc32 *vh = hdr_priv(hdr);
820
821 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
822 vh->crc32 = crc32c_intel(p, len);
823 else
824 vh->crc32 = crc32c(p, len);
825}
826
827static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
828{
829 struct vhdr_crc64 *vh = hdr_priv(hdr);
830
831 vh->crc64 = crc64(p, len);
832}
833
834static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
835{
836 struct vhdr_md5 *vh = hdr_priv(hdr);
837 struct md5_ctx md5_ctx = {
838 .hash = (uint32_t *) vh->md5_digest,
839 };
840
841 md5_init(&md5_ctx);
842 md5_update(&md5_ctx, p, len);
843}
844
845static void populate_hdr(struct thread_data *td, struct io_u *io_u,
846 struct verify_header *hdr, unsigned int header_num,
847 unsigned int header_len)
848{
849 unsigned int data_len;
850 void *data, *p;
851
852 p = (void *) hdr;
853
854 hdr->fio_magic = FIO_HDR_MAGIC;
855 hdr->len = header_len;
856 hdr->verify_type = td->o.verify;
857 hdr->rand_seed = io_u->rand_seed;
858 data_len = header_len - hdr_size(hdr);
859
860 data = p + hdr_size(hdr);
861 switch (td->o.verify) {
862 case VERIFY_MD5:
863 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
864 io_u, hdr->len);
865 fill_md5(hdr, data, data_len);
866 break;
867 case VERIFY_CRC64:
868 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
869 io_u, hdr->len);
870 fill_crc64(hdr, data, data_len);
871 break;
872 case VERIFY_CRC32C:
873 case VERIFY_CRC32C_INTEL:
874 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
875 io_u, hdr->len);
876 fill_crc32c(hdr, data, data_len);
877 break;
878 case VERIFY_CRC32:
879 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
880 io_u, hdr->len);
881 fill_crc32(hdr, data, data_len);
882 break;
883 case VERIFY_CRC16:
884 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
885 io_u, hdr->len);
886 fill_crc16(hdr, data, data_len);
887 break;
888 case VERIFY_CRC7:
889 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
890 io_u, hdr->len);
891 fill_crc7(hdr, data, data_len);
892 break;
893 case VERIFY_SHA256:
894 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
895 io_u, hdr->len);
896 fill_sha256(hdr, data, data_len);
897 break;
898 case VERIFY_SHA512:
899 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
900 io_u, hdr->len);
901 fill_sha512(hdr, data, data_len);
902 break;
903 case VERIFY_META:
904 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
905 io_u, hdr->len);
906 fill_meta(hdr, td, io_u, header_num);
907 break;
908 case VERIFY_SHA1:
909 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
910 io_u, hdr->len);
911 fill_sha1(hdr, data, data_len);
912 break;
913 default:
914 log_err("fio: bad verify type: %d\n", td->o.verify);
915 assert(0);
916 }
917 if (td->o.verify_offset)
918 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
919}
920
921/*
922 * fill body of io_u->buf with random data and add a header with the
923 * checksum of choice
924 */
925void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
926{
927 if (td->o.verify == VERIFY_NULL)
928 return;
929
930 fill_pattern_headers(td, io_u, 0, 0);
931}
932
933int get_next_verify(struct thread_data *td, struct io_u *io_u)
934{
935 struct io_piece *ipo = NULL;
936
937 /*
938 * this io_u is from a requeue, we already filled the offsets
939 */
940 if (io_u->file)
941 return 0;
942
943 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
944 struct rb_node *n = rb_first(&td->io_hist_tree);
945
946 ipo = rb_entry(n, struct io_piece, rb_node);
947 rb_erase(n, &td->io_hist_tree);
948 assert(ipo->flags & IP_F_ONRB);
949 ipo->flags &= ~IP_F_ONRB;
950 } else if (!flist_empty(&td->io_hist_list)) {
951 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
952 flist_del(&ipo->list);
953 assert(ipo->flags & IP_F_ONLIST);
954 ipo->flags &= ~IP_F_ONLIST;
955 }
956
957 if (ipo) {
958 td->io_hist_len--;
959
960 io_u->offset = ipo->offset;
961 io_u->buflen = ipo->len;
962 io_u->file = ipo->file;
963
964 if (ipo->flags & IP_F_TRIMMED)
965 io_u->flags |= IO_U_F_TRIMMED;
966
967 if (!fio_file_open(io_u->file)) {
968 int r = td_io_open_file(td, io_u->file);
969
970 if (r) {
971 dprint(FD_VERIFY, "failed file %s open\n",
972 io_u->file->file_name);
973 return 1;
974 }
975 }
976
977 get_file(ipo->file);
978 assert(fio_file_open(io_u->file));
979 io_u->ddir = DDIR_READ;
980 io_u->xfer_buf = io_u->buf;
981 io_u->xfer_buflen = io_u->buflen;
982
983 remove_trim_entry(td, ipo);
984 free(ipo);
985 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
986 return 0;
987 }
988
989 dprint(FD_VERIFY, "get_next_verify: empty\n");
990 return 1;
991}
992
993static void *verify_async_thread(void *data)
994{
995 struct thread_data *td = data;
996 struct io_u *io_u;
997 int ret = 0;
998
999 if (td->o.verify_cpumask_set &&
1000 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1001 log_err("fio: failed setting verify thread affinity\n");
1002 goto done;
1003 }
1004
1005 do {
1006 FLIST_HEAD(list);
1007
1008 read_barrier();
1009 if (td->verify_thread_exit)
1010 break;
1011
1012 pthread_mutex_lock(&td->io_u_lock);
1013
1014 while (flist_empty(&td->verify_list) &&
1015 !td->verify_thread_exit) {
1016 ret = pthread_cond_wait(&td->verify_cond,
1017 &td->io_u_lock);
1018 if (ret) {
1019 pthread_mutex_unlock(&td->io_u_lock);
1020 break;
1021 }
1022 }
1023
1024 flist_splice_init(&td->verify_list, &list);
1025 pthread_mutex_unlock(&td->io_u_lock);
1026
1027 if (flist_empty(&list))
1028 continue;
1029
1030 while (!flist_empty(&list)) {
1031 io_u = flist_entry(list.next, struct io_u, list);
1032 flist_del_init(&io_u->list);
1033
1034 ret = verify_io_u(td, io_u);
1035 put_io_u(td, io_u);
1036 if (!ret)
1037 continue;
1038 if (td->o.continue_on_error &&
1039 td_non_fatal_error(ret)) {
1040 update_error_count(td, ret);
1041 td_clear_error(td);
1042 ret = 0;
1043 }
1044 }
1045 } while (!ret);
1046
1047 if (ret) {
1048 td_verror(td, ret, "async_verify");
1049 if (td->o.verify_fatal)
1050 td->terminate = 1;
1051 }
1052
1053done:
1054 pthread_mutex_lock(&td->io_u_lock);
1055 td->nr_verify_threads--;
1056 pthread_mutex_unlock(&td->io_u_lock);
1057
1058 pthread_cond_signal(&td->free_cond);
1059 return NULL;
1060}
1061
1062int verify_async_init(struct thread_data *td)
1063{
1064 int i, ret;
1065 pthread_attr_t attr;
1066
1067 pthread_attr_init(&attr);
1068 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1069
1070 td->verify_thread_exit = 0;
1071
1072 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1073 for (i = 0; i < td->o.verify_async; i++) {
1074 ret = pthread_create(&td->verify_threads[i], &attr,
1075 verify_async_thread, td);
1076 if (ret) {
1077 log_err("fio: async verify creation failed: %s\n",
1078 strerror(ret));
1079 break;
1080 }
1081 ret = pthread_detach(td->verify_threads[i]);
1082 if (ret) {
1083 log_err("fio: async verify thread detach failed: %s\n",
1084 strerror(ret));
1085 break;
1086 }
1087 td->nr_verify_threads++;
1088 }
1089
1090 pthread_attr_destroy(&attr);
1091
1092 if (i != td->o.verify_async) {
1093 log_err("fio: only %d verify threads started, exiting\n", i);
1094 td->verify_thread_exit = 1;
1095 write_barrier();
1096 pthread_cond_broadcast(&td->verify_cond);
1097 return 1;
1098 }
1099
1100 return 0;
1101}
1102
1103void verify_async_exit(struct thread_data *td)
1104{
1105 td->verify_thread_exit = 1;
1106 write_barrier();
1107 pthread_cond_broadcast(&td->verify_cond);
1108
1109 pthread_mutex_lock(&td->io_u_lock);
1110
1111 while (td->nr_verify_threads)
1112 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1113
1114 pthread_mutex_unlock(&td->io_u_lock);
1115 free(td->verify_threads);
1116 td->verify_threads = NULL;
1117}
fio - Flexible IO Tester