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t/zbd: avoid test case 31 failure with small devices
[fio.git] / filesetup.c
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CommitLineData
1#include <unistd.h>
2#include <fcntl.h>
3#include <string.h>
4#include <assert.h>
5#include <dirent.h>
6#include <libgen.h>
7#include <sys/stat.h>
8
9#include "fio.h"
10#include "smalloc.h"
11#include "filehash.h"
12#include "options.h"
13#include "os/os.h"
14#include "hash.h"
15#include "lib/axmap.h"
16#include "rwlock.h"
17#include "zbd.h"
18
19#ifdef CONFIG_LINUX_FALLOCATE
20#include <linux/falloc.h>
21#endif
22
23static FLIST_HEAD(filename_list);
24
25/*
26 * List entry for filename_list
27 */
28struct file_name {
29 struct flist_head list;
30 char *filename;
31};
32
33static inline void clear_error(struct thread_data *td)
34{
35 td->error = 0;
36 td->verror[0] = '\0';
37}
38
39static int native_fallocate(struct thread_data *td, struct fio_file *f)
40{
41 bool success;
42
43 success = fio_fallocate(f, 0, f->real_file_size);
44 dprint(FD_FILE, "native fallocate of file %s size %llu was "
45 "%ssuccessful\n", f->file_name,
46 (unsigned long long) f->real_file_size,
47 !success ? "un": "");
48
49 if (success)
50 return false;
51
52 if (errno == ENOSYS)
53 dprint(FD_FILE, "native fallocate is not implemented\n");
54
55 return true;
56}
57
58static void fallocate_file(struct thread_data *td, struct fio_file *f)
59{
60 if (td->o.fill_device)
61 return;
62
63 switch (td->o.fallocate_mode) {
64 case FIO_FALLOCATE_NATIVE:
65 native_fallocate(td, f);
66 break;
67 case FIO_FALLOCATE_NONE:
68 break;
69#ifdef CONFIG_POSIX_FALLOCATE
70 case FIO_FALLOCATE_POSIX: {
71 int r;
72
73 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
74 f->file_name,
75 (unsigned long long) f->real_file_size);
76
77 r = posix_fallocate(f->fd, 0, f->real_file_size);
78 if (r > 0)
79 log_err("fio: posix_fallocate fails: %s\n", strerror(r));
80 break;
81 }
82#endif /* CONFIG_POSIX_FALLOCATE */
83#ifdef CONFIG_LINUX_FALLOCATE
84 case FIO_FALLOCATE_KEEP_SIZE: {
85 int r;
86
87 dprint(FD_FILE, "fallocate(FALLOC_FL_KEEP_SIZE) "
88 "file %s size %llu\n", f->file_name,
89 (unsigned long long) f->real_file_size);
90
91 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0, f->real_file_size);
92 if (r != 0)
93 td_verror(td, errno, "fallocate");
94
95 break;
96 }
97#endif /* CONFIG_LINUX_FALLOCATE */
98 case FIO_FALLOCATE_TRUNCATE: {
99 int r;
100
101 dprint(FD_FILE, "ftruncate file %s size %llu\n",
102 f->file_name,
103 (unsigned long long) f->real_file_size);
104 r = ftruncate(f->fd, f->real_file_size);
105 if (r != 0)
106 td_verror(td, errno, "ftruncate");
107
108 break;
109 }
110 default:
111 log_err("fio: unknown fallocate mode: %d\n", td->o.fallocate_mode);
112 assert(0);
113 }
114}
115
116/*
117 * Leaves f->fd open on success, caller must close
118 */
119static int extend_file(struct thread_data *td, struct fio_file *f)
120{
121 int new_layout = 0, unlink_file = 0, flags;
122 unsigned long long left;
123 unsigned long long bs;
124 char *b = NULL;
125
126 if (read_only) {
127 log_err("fio: refusing extend of file due to read-only\n");
128 return 0;
129 }
130
131 /*
132 * check if we need to lay the file out complete again. fio
133 * does that for operations involving reads, or for writes
134 * where overwrite is set
135 */
136 if (td_read(td) ||
137 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
138 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
139 new_layout = 1;
140 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
141 unlink_file = 1;
142
143 if (unlink_file || new_layout) {
144 int ret;
145
146 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
147
148 ret = td_io_unlink_file(td, f);
149 if (ret != 0 && ret != ENOENT) {
150 td_verror(td, errno, "unlink");
151 return 1;
152 }
153 }
154
155 flags = O_WRONLY;
156 if (td->o.allow_create)
157 flags |= O_CREAT;
158 if (new_layout)
159 flags |= O_TRUNC;
160
161#ifdef WIN32
162 flags |= _O_BINARY;
163#endif
164
165 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
166 f->fd = open(f->file_name, flags, 0644);
167 if (f->fd < 0) {
168 int err = errno;
169
170 if (err == ENOENT && !td->o.allow_create)
171 log_err("fio: file creation disallowed by "
172 "allow_file_create=0\n");
173 else
174 td_verror(td, err, "open");
175 return 1;
176 }
177
178 fallocate_file(td, f);
179
180 /*
181 * If our jobs don't require regular files initially, we're done.
182 */
183 if (!new_layout)
184 goto done;
185
186 /*
187 * The size will be -1ULL when fill_device is used, so don't truncate
188 * or fallocate this file, just write it
189 */
190 if (!td->o.fill_device) {
191 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
192 (unsigned long long) f->real_file_size);
193 if (ftruncate(f->fd, f->real_file_size) == -1) {
194 if (errno != EFBIG) {
195 td_verror(td, errno, "ftruncate");
196 goto err;
197 }
198 }
199 }
200
201 left = f->real_file_size;
202 bs = td->o.max_bs[DDIR_WRITE];
203 if (bs > left)
204 bs = left;
205
206 b = malloc(bs);
207 if (!b) {
208 td_verror(td, errno, "malloc");
209 goto err;
210 }
211
212 while (left && !td->terminate) {
213 ssize_t r;
214
215 if (bs > left)
216 bs = left;
217
218 fill_io_buffer(td, b, bs, bs);
219
220 r = write(f->fd, b, bs);
221
222 if (r > 0) {
223 left -= r;
224 continue;
225 } else {
226 if (r < 0) {
227 int __e = errno;
228
229 if (__e == ENOSPC || __e == EDQUOT) {
230 const char *__e_name;
231 if (td->o.fill_device)
232 break;
233 if (__e == ENOSPC)
234 __e_name = "ENOSPC";
235 else
236 __e_name = "EDQUOT";
237 log_info("fio: %s on laying out "
238 "file, stopping\n", __e_name);
239 }
240 td_verror(td, errno, "write");
241 } else
242 td_verror(td, EIO, "write");
243
244 goto err;
245 }
246 }
247
248 if (td->terminate) {
249 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
250 td_io_unlink_file(td, f);
251 } else if (td->o.create_fsync) {
252 if (fsync(f->fd) < 0) {
253 td_verror(td, errno, "fsync");
254 goto err;
255 }
256 }
257 if (td->o.fill_device && !td_write(td)) {
258 fio_file_clear_size_known(f);
259 if (td_io_get_file_size(td, f))
260 goto err;
261 if (f->io_size > f->real_file_size)
262 f->io_size = f->real_file_size;
263 }
264
265 free(b);
266done:
267 return 0;
268err:
269 close(f->fd);
270 f->fd = -1;
271 if (b)
272 free(b);
273 return 1;
274}
275
276static bool pre_read_file(struct thread_data *td, struct fio_file *f)
277{
278 int r, did_open = 0, old_runstate;
279 unsigned long long left;
280 unsigned long long bs;
281 bool ret = true;
282 char *b;
283
284 if (td_ioengine_flagged(td, FIO_PIPEIO) ||
285 td_ioengine_flagged(td, FIO_NOIO))
286 return true;
287
288 if (f->filetype == FIO_TYPE_CHAR)
289 return true;
290
291 if (!fio_file_open(f)) {
292 if (td->io_ops->open_file(td, f)) {
293 log_err("fio: cannot pre-read, failed to open file\n");
294 return false;
295 }
296 did_open = 1;
297 }
298
299 old_runstate = td_bump_runstate(td, TD_PRE_READING);
300
301 left = f->io_size;
302 bs = td->o.max_bs[DDIR_READ];
303 if (bs > left)
304 bs = left;
305
306 b = calloc(1, bs);
307 if (!b) {
308 td_verror(td, errno, "malloc");
309 ret = false;
310 goto error;
311 }
312
313 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
314 td_verror(td, errno, "lseek");
315 log_err("fio: failed to lseek pre-read file\n");
316 ret = false;
317 goto error;
318 }
319
320 while (left && !td->terminate) {
321 if (bs > left)
322 bs = left;
323
324 r = read(f->fd, b, bs);
325
326 if (r == (int) bs) {
327 left -= bs;
328 continue;
329 } else {
330 td_verror(td, EIO, "pre_read");
331 break;
332 }
333 }
334
335error:
336 td_restore_runstate(td, old_runstate);
337
338 if (did_open)
339 td->io_ops->close_file(td, f);
340
341 free(b);
342 return ret;
343}
344
345/*
346 * Generic function to prepopulate regular file with data.
347 * Useful if you want to make sure I/O engine has data to read.
348 * Leaves f->fd open on success, caller must close.
349 */
350int generic_prepopulate_file(struct thread_data *td, struct fio_file *f)
351{
352 int flags;
353 unsigned long long left, bs;
354 char *b = NULL;
355
356 /* generic function for regular files only */
357 assert(f->filetype == FIO_TYPE_FILE);
358
359 if (read_only) {
360 log_err("fio: refusing to write a file due to read-only\n");
361 return 0;
362 }
363
364 flags = O_WRONLY;
365 if (td->o.allow_create)
366 flags |= O_CREAT;
367
368#ifdef WIN32
369 flags |= _O_BINARY;
370#endif
371
372 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
373 f->fd = open(f->file_name, flags, 0644);
374 if (f->fd < 0) {
375 int err = errno;
376
377 if (err == ENOENT && !td->o.allow_create)
378 log_err("fio: file creation disallowed by "
379 "allow_file_create=0\n");
380 else
381 td_verror(td, err, "open");
382 return 1;
383 }
384
385 left = f->real_file_size;
386 bs = td->o.max_bs[DDIR_WRITE];
387 if (bs > left)
388 bs = left;
389
390 b = malloc(bs);
391 if (!b) {
392 td_verror(td, errno, "malloc");
393 goto err;
394 }
395
396 while (left && !td->terminate) {
397 ssize_t r;
398
399 if (bs > left)
400 bs = left;
401
402 fill_io_buffer(td, b, bs, bs);
403
404 r = write(f->fd, b, bs);
405
406 if (r > 0) {
407 left -= r;
408 } else {
409 td_verror(td, errno, "write");
410 goto err;
411 }
412 }
413
414 if (td->terminate) {
415 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
416 td_io_unlink_file(td, f);
417 } else if (td->o.create_fsync) {
418 if (fsync(f->fd) < 0) {
419 td_verror(td, errno, "fsync");
420 goto err;
421 }
422 }
423
424 free(b);
425 return 0;
426err:
427 close(f->fd);
428 f->fd = -1;
429 if (b)
430 free(b);
431 return 1;
432}
433
434unsigned long long get_rand_file_size(struct thread_data *td)
435{
436 unsigned long long ret, sized;
437 uint64_t frand_max;
438 uint64_t r;
439
440 frand_max = rand_max(&td->file_size_state);
441 r = __rand(&td->file_size_state);
442 sized = td->o.file_size_high - td->o.file_size_low;
443 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
444 ret += td->o.file_size_low;
445 ret -= (ret % td->o.rw_min_bs);
446 return ret;
447}
448
449static int file_size(struct thread_data *td, struct fio_file *f)
450{
451 struct stat st;
452
453 if (stat(f->file_name, &st) == -1) {
454 td_verror(td, errno, "fstat");
455 return 1;
456 }
457
458 f->real_file_size = st.st_size;
459 return 0;
460}
461
462static int bdev_size(struct thread_data *td, struct fio_file *f)
463{
464 unsigned long long bytes = 0;
465 int r;
466
467 if (td->io_ops->open_file(td, f)) {
468 log_err("fio: failed opening blockdev %s for size check\n",
469 f->file_name);
470 return 1;
471 }
472
473 r = blockdev_size(f, &bytes);
474 if (r) {
475 td_verror(td, r, "blockdev_size");
476 goto err;
477 }
478
479 if (!bytes) {
480 log_err("%s: zero sized block device?\n", f->file_name);
481 goto err;
482 }
483
484 f->real_file_size = bytes;
485 td->io_ops->close_file(td, f);
486 return 0;
487err:
488 td->io_ops->close_file(td, f);
489 return 1;
490}
491
492static int char_size(struct thread_data *td, struct fio_file *f)
493{
494#ifdef FIO_HAVE_CHARDEV_SIZE
495 unsigned long long bytes = 0;
496 int r;
497
498 if (td->io_ops->open_file(td, f)) {
499 log_err("fio: failed opening chardev %s for size check\n",
500 f->file_name);
501 return 1;
502 }
503
504 r = chardev_size(f, &bytes);
505 if (r) {
506 td_verror(td, r, "chardev_size");
507 goto err;
508 }
509
510 if (!bytes) {
511 log_err("%s: zero sized char device?\n", f->file_name);
512 goto err;
513 }
514
515 f->real_file_size = bytes;
516 td->io_ops->close_file(td, f);
517 return 0;
518err:
519 td->io_ops->close_file(td, f);
520 return 1;
521#else
522 f->real_file_size = -1ULL;
523 return 0;
524#endif
525}
526
527static int get_file_size(struct thread_data *td, struct fio_file *f)
528{
529 int ret = 0;
530
531 if (fio_file_size_known(f))
532 return 0;
533
534 if (f->filetype == FIO_TYPE_FILE)
535 ret = file_size(td, f);
536 else if (f->filetype == FIO_TYPE_BLOCK)
537 ret = bdev_size(td, f);
538 else if (f->filetype == FIO_TYPE_CHAR)
539 ret = char_size(td, f);
540 else {
541 f->real_file_size = -1;
542 log_info("%s: failed to get file size of %s\n", td->o.name,
543 f->file_name);
544 return 1; /* avoid offset extends end error message */
545 }
546
547 /*
548 * Leave ->real_file_size with 0 since it could be expectation
549 * of initial setup for regular files.
550 */
551 if (ret)
552 return ret;
553
554 /*
555 * ->file_offset normally hasn't been initialized yet, so this
556 * is basically always false unless ->real_file_size is -1, but
557 * if ->real_file_size is -1 this message doesn't make sense.
558 * As a result, this message is basically useless.
559 */
560 if (f->file_offset > f->real_file_size) {
561 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
562 (unsigned long long) f->file_offset,
563 (unsigned long long) f->real_file_size);
564 return 1;
565 }
566
567 fio_file_set_size_known(f);
568 return 0;
569}
570
571static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
572 unsigned long long off,
573 unsigned long long len)
574{
575 int errval = 0, ret = 0;
576
577#ifdef CONFIG_ESX
578 return 0;
579#endif
580
581 if (len == -1ULL)
582 len = f->io_size;
583 if (off == -1ULL)
584 off = f->file_offset;
585
586 if (len == -1ULL || off == -1ULL)
587 return 0;
588
589 if (td->io_ops->invalidate) {
590 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
591 f->file_name);
592 ret = td->io_ops->invalidate(td, f);
593 if (ret < 0)
594 errval = -ret;
595 } else if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
596 dprint(FD_IO, "invalidate not supported by ioengine %s\n",
597 td->io_ops->name);
598 } else if (f->filetype == FIO_TYPE_FILE) {
599 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
600 f->file_name, off, len);
601 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
602 if (ret)
603 errval = ret;
604 } else if (f->filetype == FIO_TYPE_BLOCK) {
605 int retry_count = 0;
606
607 dprint(FD_IO, "drop page cache %s\n", f->file_name);
608 ret = blockdev_invalidate_cache(f);
609 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
610 /*
611 * Linux multipath devices reject ioctl while
612 * the maps are being updated. That window can
613 * last tens of milliseconds; we'll try up to
614 * a quarter of a second.
615 */
616 usleep(10000);
617 ret = blockdev_invalidate_cache(f);
618 }
619 if (ret < 0 && errno == EACCES && geteuid()) {
620 if (!fio_did_warn(FIO_WARN_ROOT_FLUSH)) {
621 log_err("fio: only root may flush block "
622 "devices. Cache flush bypassed!\n");
623 }
624 }
625 if (ret < 0)
626 errval = errno;
627 } else if (f->filetype == FIO_TYPE_CHAR ||
628 f->filetype == FIO_TYPE_PIPE) {
629 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
630 }
631
632 /*
633 * Cache flushing isn't a fatal condition, and we know it will
634 * happen on some platforms where we don't have the proper
635 * function to flush eg block device caches. So just warn and
636 * continue on our way.
637 */
638 if (errval)
639 log_info("fio: cache invalidation of %s failed: %s\n",
640 f->file_name, strerror(errval));
641
642 return 0;
643
644}
645
646int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
647{
648 if (!fio_file_open(f))
649 return 0;
650
651 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
652}
653
654int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
655{
656 int ret = 0;
657
658 dprint(FD_FILE, "fd close %s\n", f->file_name);
659
660 remove_file_hash(f);
661
662 if (close(f->fd) < 0)
663 ret = errno;
664
665 f->fd = -1;
666
667 if (f->shadow_fd != -1) {
668 close(f->shadow_fd);
669 f->shadow_fd = -1;
670 }
671
672 f->engine_pos = 0;
673 return ret;
674}
675
676int file_lookup_open(struct fio_file *f, int flags)
677{
678 struct fio_file *__f;
679 int from_hash;
680
681 __f = lookup_file_hash(f->file_name);
682 if (__f) {
683 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
684 f->lock = __f->lock;
685 from_hash = 1;
686 } else {
687 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
688 from_hash = 0;
689 }
690
691#ifdef WIN32
692 flags |= _O_BINARY;
693#endif
694
695 f->fd = open(f->file_name, flags, 0600);
696 return from_hash;
697}
698
699static int file_close_shadow_fds(struct thread_data *td)
700{
701 struct fio_file *f;
702 int num_closed = 0;
703 unsigned int i;
704
705 for_each_file(td, f, i) {
706 if (f->shadow_fd == -1)
707 continue;
708
709 close(f->shadow_fd);
710 f->shadow_fd = -1;
711 num_closed++;
712 }
713
714 return num_closed;
715}
716
717int generic_open_file(struct thread_data *td, struct fio_file *f)
718{
719 int is_std = 0;
720 int flags = 0;
721 int from_hash = 0;
722
723 dprint(FD_FILE, "fd open %s\n", f->file_name);
724
725 if (!strcmp(f->file_name, "-")) {
726 if (td_rw(td)) {
727 log_err("fio: can't read/write to stdin/out\n");
728 return 1;
729 }
730 is_std = 1;
731
732 /*
733 * move output logging to stderr, if we are writing to stdout
734 */
735 if (td_write(td))
736 f_out = stderr;
737 }
738
739 if (td->o.odirect)
740 flags |= OS_O_DIRECT;
741 flags |= td->o.sync_io;
742 if (td->o.create_on_open && td->o.allow_create)
743 flags |= O_CREAT;
744 if (f->filetype != FIO_TYPE_FILE)
745 flags |= FIO_O_NOATIME;
746
747open_again:
748 if (td_write(td)) {
749 if (!read_only)
750 flags |= O_RDWR;
751
752 if (td->o.verify_only) {
753 flags &= ~O_RDWR;
754 flags |= O_RDONLY;
755 }
756
757 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
758 flags |= O_CREAT;
759
760 if (is_std)
761 f->fd = dup(STDOUT_FILENO);
762 else
763 from_hash = file_lookup_open(f, flags);
764 } else if (td_read(td)) {
765 if (td_ioengine_flagged(td, FIO_RO_NEEDS_RW_OPEN) && !read_only)
766 flags |= O_RDWR;
767 else
768 flags |= O_RDONLY;
769
770 if (is_std)
771 f->fd = dup(STDIN_FILENO);
772 else
773 from_hash = file_lookup_open(f, flags);
774 } else if (td_trim(td)) {
775 assert(!td_rw(td)); /* should have matched above */
776 if (!read_only)
777 flags |= O_RDWR;
778 from_hash = file_lookup_open(f, flags);
779 }
780
781 if (f->fd == -1) {
782 char buf[FIO_VERROR_SIZE];
783 int __e = errno;
784
785 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
786 flags &= ~FIO_O_NOATIME;
787 goto open_again;
788 }
789 if (__e == EMFILE && file_close_shadow_fds(td))
790 goto open_again;
791
792 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
793
794 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
795 log_err("fio: looks like your file system does not " \
796 "support direct=1/buffered=0\n");
797 }
798
799 td_verror(td, __e, buf);
800 return 1;
801 }
802
803 if (!from_hash && f->fd != -1) {
804 if (add_file_hash(f)) {
805 int fio_unused ret;
806
807 /*
808 * Stash away descriptor for later close. This is to
809 * work-around a "feature" on Linux, where a close of
810 * an fd that has been opened for write will trigger
811 * udev to call blkid to check partitions, fs id, etc.
812 * That pollutes the device cache, which can slow down
813 * unbuffered accesses.
814 */
815 if (f->shadow_fd == -1)
816 f->shadow_fd = f->fd;
817 else {
818 /*
819 * OK to ignore, we haven't done anything
820 * with it
821 */
822 ret = generic_close_file(td, f);
823 }
824 goto open_again;
825 }
826 }
827
828 return 0;
829}
830
831/*
832 * This function i.e. get_file_size() is the default .get_file_size
833 * implementation of majority of I/O engines.
834 */
835int generic_get_file_size(struct thread_data *td, struct fio_file *f)
836{
837 return get_file_size(td, f);
838}
839
840/*
841 * open/close all files, so that ->real_file_size gets set
842 */
843static int get_file_sizes(struct thread_data *td)
844{
845 struct fio_file *f;
846 unsigned int i;
847 int err = 0;
848
849 for_each_file(td, f, i) {
850 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
851 f->file_name);
852
853 if (td_io_get_file_size(td, f)) {
854 if (td->error != ENOENT) {
855 log_err("%s\n", td->verror);
856 err = 1;
857 break;
858 }
859 clear_error(td);
860 }
861
862 /*
863 * There are corner cases where we end up with -1 for
864 * ->real_file_size due to unsupported file type, etc.
865 * We then just set to size option value divided by number
866 * of files, similar to the way file ->io_size is set.
867 * stat(2) failure doesn't set ->real_file_size to -1.
868 */
869 if (f->real_file_size == -1ULL && td->o.size)
870 f->real_file_size = td->o.size / td->o.nr_files;
871 }
872
873 return err;
874}
875
876struct fio_mount {
877 struct flist_head list;
878 const char *base;
879 char __base[256];
880 unsigned int key;
881};
882
883/*
884 * Get free number of bytes for each file on each unique mount.
885 */
886static unsigned long long get_fs_free_counts(struct thread_data *td)
887{
888 struct flist_head *n, *tmp;
889 unsigned long long ret = 0;
890 struct fio_mount *fm;
891 FLIST_HEAD(list);
892 struct fio_file *f;
893 unsigned int i;
894
895 for_each_file(td, f, i) {
896 struct stat sb;
897 char buf[256];
898
899 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
900 if (f->real_file_size != -1ULL)
901 ret += f->real_file_size;
902 continue;
903 } else if (f->filetype != FIO_TYPE_FILE)
904 continue;
905
906 snprintf(buf, FIO_ARRAY_SIZE(buf), "%s", f->file_name);
907
908 if (stat(buf, &sb) < 0) {
909 if (errno != ENOENT)
910 break;
911 strcpy(buf, ".");
912 if (stat(buf, &sb) < 0)
913 break;
914 }
915
916 fm = NULL;
917 flist_for_each(n, &list) {
918 fm = flist_entry(n, struct fio_mount, list);
919 if (fm->key == sb.st_dev)
920 break;
921
922 fm = NULL;
923 }
924
925 if (fm)
926 continue;
927
928 fm = calloc(1, sizeof(*fm));
929 snprintf(fm->__base, FIO_ARRAY_SIZE(fm->__base), "%s", buf);
930 fm->base = basename(fm->__base);
931 fm->key = sb.st_dev;
932 flist_add(&fm->list, &list);
933 }
934
935 flist_for_each_safe(n, tmp, &list) {
936 unsigned long long sz;
937
938 fm = flist_entry(n, struct fio_mount, list);
939 flist_del(&fm->list);
940
941 sz = get_fs_free_size(fm->base);
942 if (sz && sz != -1ULL)
943 ret += sz;
944
945 free(fm);
946 }
947
948 return ret;
949}
950
951uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
952{
953 bool align = false;
954 struct thread_options *o = &td->o;
955 unsigned long long align_bs;
956 unsigned long long offset;
957 unsigned long long increment;
958
959 if (o->file_append && f->filetype == FIO_TYPE_FILE)
960 return f->real_file_size;
961
962 if (o->offset_increment_percent) {
963 assert(!o->offset_increment);
964 increment = o->offset_increment_percent * f->real_file_size / 100;
965 align = true;
966 } else
967 increment = o->offset_increment;
968
969 if (o->start_offset_percent > 0) {
970 /* calculate the raw offset */
971 offset = (f->real_file_size * o->start_offset_percent / 100) +
972 (td->subjob_number * increment);
973
974 align = true;
975 } else {
976 /* start_offset_percent not set */
977 offset = o->start_offset +
978 td->subjob_number * increment;
979 }
980
981 if (align) {
982 /*
983 * if offset_align is provided, use it
984 */
985 if (fio_option_is_set(o, start_offset_align)) {
986 align_bs = o->start_offset_align;
987 } else {
988 /* else take the minimum block size */
989 align_bs = td_min_bs(td);
990 }
991
992 /*
993 * block align the offset at the next available boundary at
994 * ceiling(offset / align_bs) * align_bs
995 */
996 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
997 }
998
999 return offset;
1000}
1001
1002/*
1003 * Find longest path component that exists and return its length
1004 */
1005int longest_existing_path(char *path) {
1006 char buf[PATH_MAX];
1007 bool done;
1008 char *buf_pos;
1009 int offset;
1010#ifdef WIN32
1011 DWORD dwAttr;
1012#else
1013 struct stat sb;
1014#endif
1015
1016 sprintf(buf, "%s", path);
1017 done = false;
1018 while (!done) {
1019 buf_pos = strrchr(buf, FIO_OS_PATH_SEPARATOR);
1020 if (!buf_pos) {
1021 offset = 0;
1022 break;
1023 }
1024
1025 *(buf_pos + 1) = '\0';
1026
1027#ifdef WIN32
1028 dwAttr = GetFileAttributesA(buf);
1029 if (dwAttr != INVALID_FILE_ATTRIBUTES) {
1030 done = true;
1031 }
1032#else
1033 if (stat(buf, &sb) == 0)
1034 done = true;
1035#endif
1036 if (done)
1037 offset = buf_pos - buf;
1038 else
1039 *buf_pos = '\0';
1040 }
1041
1042 return offset;
1043}
1044
1045static bool create_work_dirs(struct thread_data *td, const char *fname)
1046{
1047 char path[PATH_MAX];
1048 char *start, *end;
1049 int offset;
1050
1051 snprintf(path, PATH_MAX, "%s", fname);
1052 start = path;
1053
1054 offset = longest_existing_path(path);
1055 end = start + offset;
1056 while ((end = strchr(end, FIO_OS_PATH_SEPARATOR)) != NULL) {
1057 if (end == start) {
1058 end++;
1059 continue;
1060 }
1061 *end = '\0';
1062 errno = 0;
1063 if (fio_mkdir(path, 0700) && errno != EEXIST) {
1064 log_err("fio: failed to create dir (%s): %s\n",
1065 start, strerror(errno));
1066 return false;
1067 }
1068 *end = FIO_OS_PATH_SEPARATOR;
1069 end++;
1070 }
1071 td->flags |= TD_F_DIRS_CREATED;
1072 return true;
1073}
1074
1075/*
1076 * Open the files and setup files sizes, creating files if necessary.
1077 */
1078int setup_files(struct thread_data *td)
1079{
1080 unsigned long long total_size, extend_size;
1081 struct thread_options *o = &td->o;
1082 struct fio_file *f;
1083 unsigned int i, nr_fs_extra = 0;
1084 int err = 0, need_extend;
1085 int old_state;
1086 const unsigned long long bs = td_min_bs(td);
1087 uint64_t fs = 0;
1088
1089 dprint(FD_FILE, "setup files\n");
1090
1091 old_state = td_bump_runstate(td, TD_SETTING_UP);
1092
1093 for_each_file(td, f, i) {
1094 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1095 strchr(f->file_name, FIO_OS_PATH_SEPARATOR) &&
1096 !(td->flags & TD_F_DIRS_CREATED) &&
1097 !create_work_dirs(td, f->file_name))
1098 goto err_out;
1099 }
1100
1101 /*
1102 * Find out physical size of files or devices for this thread,
1103 * before we determine I/O size and range of our targets.
1104 * If ioengine defines a setup() method, it's responsible for
1105 * opening the files and setting f->real_file_size to indicate
1106 * the valid range for that file.
1107 */
1108 if (td->io_ops->setup)
1109 err = td->io_ops->setup(td);
1110 else
1111 err = get_file_sizes(td);
1112
1113 if (err)
1114 goto err_out;
1115
1116 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1117 err = zbd_init_files(td);
1118 if (err)
1119 goto err_out;
1120 }
1121 zbd_recalc_options_with_zone_granularity(td);
1122
1123 if (o->read_iolog_file)
1124 goto done;
1125
1126 /*
1127 * check sizes. if the files/devices do not exist and the size
1128 * isn't passed to fio, abort.
1129 */
1130 total_size = 0;
1131 for_each_file(td, f, i) {
1132 f->fileno = i;
1133 if (f->real_file_size == -1ULL)
1134 total_size = -1ULL;
1135 else
1136 total_size += f->real_file_size;
1137 }
1138
1139 if (o->fill_device)
1140 td->fill_device_size = get_fs_free_counts(td);
1141
1142 /*
1143 * device/file sizes are zero and no size given, punt
1144 */
1145 if ((!total_size || total_size == -1ULL) && !o->size &&
1146 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
1147 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
1148 log_err("%s: you need to specify size=\n", o->name);
1149 td_verror(td, EINVAL, "total_file_size");
1150 goto err_out;
1151 }
1152
1153 /*
1154 * Calculate per-file size and potential extra size for the
1155 * first files, if needed (i.e. if we don't have a fixed size).
1156 */
1157 if (!o->file_size_low && o->nr_files) {
1158 uint64_t all_fs;
1159
1160 fs = o->size / o->nr_files;
1161 all_fs = fs * o->nr_files;
1162
1163 if (all_fs < o->size)
1164 nr_fs_extra = (o->size - all_fs) / bs;
1165 }
1166
1167 /*
1168 * now file sizes are known, so we can set ->io_size. if size= is
1169 * not given, ->io_size is just equal to ->real_file_size. if size
1170 * is given, ->io_size is size / nr_files.
1171 */
1172 extend_size = total_size = 0;
1173 need_extend = 0;
1174 for_each_file(td, f, i) {
1175 f->file_offset = get_start_offset(td, f);
1176
1177 /*
1178 * Update ->io_size depending on options specified.
1179 * ->file_size_low being 0 means filesize option isn't set.
1180 * Non zero ->file_size_low equals ->file_size_high means
1181 * filesize option is set in a fixed size format.
1182 * Non zero ->file_size_low not equals ->file_size_high means
1183 * filesize option is set in a range format.
1184 */
1185 if (!o->file_size_low) {
1186 /*
1187 * no file size or range given, file size is equal to
1188 * total size divided by number of files. If the size
1189 * doesn't divide nicely with the min blocksize,
1190 * make the first files bigger.
1191 */
1192 f->io_size = fs;
1193 if (nr_fs_extra) {
1194 nr_fs_extra--;
1195 f->io_size += bs;
1196 }
1197
1198 /*
1199 * We normally don't come here for regular files, but
1200 * if the result is 0 for a regular file, set it to the
1201 * real file size. This could be size of the existing
1202 * one if it already exists, but otherwise will be set
1203 * to 0. A new file won't be created because
1204 * ->io_size + ->file_offset equals ->real_file_size.
1205 */
1206 if (!f->io_size) {
1207 if (f->file_offset > f->real_file_size)
1208 goto err_offset;
1209 f->io_size = f->real_file_size - f->file_offset;
1210 if (!f->io_size)
1211 log_info("fio: file %s may be ignored\n",
1212 f->file_name);
1213 }
1214 } else if (f->real_file_size < o->file_size_low ||
1215 f->real_file_size > o->file_size_high) {
1216 if (f->file_offset > o->file_size_low)
1217 goto err_offset;
1218 /*
1219 * file size given. if it's fixed, use that. if it's a
1220 * range, generate a random size in-between.
1221 */
1222 if (o->file_size_low == o->file_size_high)
1223 f->io_size = o->file_size_low - f->file_offset;
1224 else {
1225 f->io_size = get_rand_file_size(td)
1226 - f->file_offset;
1227 }
1228 } else
1229 f->io_size = f->real_file_size - f->file_offset;
1230
1231 if (f->io_size == -1ULL)
1232 total_size = -1ULL;
1233 else {
1234 uint64_t io_size;
1235
1236 if (o->size_percent && o->size_percent != 100) {
1237 uint64_t file_size;
1238
1239 file_size = f->io_size + f->file_offset;
1240 f->io_size = (file_size *
1241 o->size_percent) / 100;
1242 if (f->io_size > (file_size - f->file_offset))
1243 f->io_size = file_size - f->file_offset;
1244
1245 f->io_size -= (f->io_size % td_min_bs(td));
1246 }
1247
1248 io_size = f->io_size;
1249 if (o->io_size_percent && o->io_size_percent != 100) {
1250 io_size *= o->io_size_percent;
1251 io_size /= 100;
1252 }
1253
1254 total_size += io_size;
1255 }
1256
1257 if (f->filetype == FIO_TYPE_FILE &&
1258 (f->io_size + f->file_offset) > f->real_file_size) {
1259 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1260 !o->create_on_open) {
1261 need_extend++;
1262 extend_size += (f->io_size + f->file_offset);
1263 fio_file_set_extend(f);
1264 } else if (!td_ioengine_flagged(td, FIO_DISKLESSIO) ||
1265 (td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1266 td_ioengine_flagged(td, FIO_FAKEIO)))
1267 f->real_file_size = f->io_size + f->file_offset;
1268 }
1269 }
1270
1271 if (td->o.block_error_hist) {
1272 int len;
1273
1274 assert(td->o.nr_files == 1); /* checked in fixup_options */
1275 f = td->files[0];
1276 len = f->io_size / td->o.bs[DDIR_TRIM];
1277 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1278 log_err("fio: cannot calculate block histogram with "
1279 "%d trim blocks, maximum %d\n",
1280 len, MAX_NR_BLOCK_INFOS);
1281 td_verror(td, EINVAL, "block_error_hist");
1282 goto err_out;
1283 }
1284
1285 td->ts.nr_block_infos = len;
1286 for (i = 0; i < len; i++)
1287 td->ts.block_infos[i] =
1288 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1289 } else
1290 td->ts.nr_block_infos = 0;
1291
1292 if (!o->size || (total_size && o->size > total_size))
1293 o->size = total_size;
1294
1295 if (o->size < td_min_bs(td)) {
1296 log_err("fio: blocksize is larger than data set range\n");
1297 goto err_out;
1298 }
1299
1300 /*
1301 * See if we need to extend some files, typically needed when our
1302 * target regular files don't exist yet, but our jobs require them
1303 * initially due to read I/Os.
1304 */
1305 if (need_extend) {
1306 temp_stall_ts = 1;
1307 if (output_format & FIO_OUTPUT_NORMAL) {
1308 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1309 o->name,
1310 need_extend > 1 ? "s" : "",
1311 need_extend,
1312 need_extend > 1 ? "s" : "",
1313 need_extend > 1 ? "total " : "",
1314 extend_size >> 20);
1315 }
1316
1317 for_each_file(td, f, i) {
1318 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1319
1320 if (!fio_file_extend(f))
1321 continue;
1322
1323 assert(f->filetype == FIO_TYPE_FILE);
1324 fio_file_clear_extend(f);
1325 if (!o->fill_device) {
1326 old_len = f->real_file_size;
1327 extend_len = f->io_size + f->file_offset -
1328 old_len;
1329 }
1330 f->real_file_size = (f->io_size + f->file_offset);
1331 err = extend_file(td, f);
1332 if (err)
1333 break;
1334
1335 err = __file_invalidate_cache(td, f, old_len,
1336 extend_len);
1337
1338 /*
1339 * Shut up static checker
1340 */
1341 if (f->fd != -1)
1342 close(f->fd);
1343
1344 f->fd = -1;
1345 if (err)
1346 break;
1347 }
1348 temp_stall_ts = 0;
1349 }
1350
1351 if (err)
1352 goto err_out;
1353
1354 /*
1355 * Prepopulate files with data. It might be expected to read some
1356 * "real" data instead of zero'ed files (if no writes to file occurred
1357 * prior to a read job). Engine has to provide a way to do that.
1358 */
1359 if (td->io_ops->prepopulate_file) {
1360 temp_stall_ts = 1;
1361
1362 for_each_file(td, f, i) {
1363 if (output_format & FIO_OUTPUT_NORMAL) {
1364 log_info("%s: Prepopulating IO file (%s)\n",
1365 o->name, f->file_name);
1366 }
1367
1368 err = td->io_ops->prepopulate_file(td, f);
1369 if (err)
1370 break;
1371
1372 err = __file_invalidate_cache(td, f, f->file_offset,
1373 f->io_size);
1374
1375 /*
1376 * Shut up static checker
1377 */
1378 if (f->fd != -1)
1379 close(f->fd);
1380
1381 f->fd = -1;
1382 if (err)
1383 break;
1384 }
1385 temp_stall_ts = 0;
1386 }
1387
1388 if (err)
1389 goto err_out;
1390
1391 /*
1392 * iolog already set the total io size, if we read back
1393 * stored entries.
1394 */
1395 if (!o->read_iolog_file) {
1396 if (o->io_size)
1397 td->total_io_size = o->io_size * o->loops;
1398 else
1399 td->total_io_size = o->size * o->loops;
1400 }
1401
1402done:
1403 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1404 err = zbd_setup_files(td);
1405 if (err)
1406 goto err_out;
1407 }
1408
1409 if (o->create_only)
1410 td->done = 1;
1411
1412 td_restore_runstate(td, old_state);
1413
1414 if (td->o.dp_type != FIO_DP_NONE) {
1415 err = dp_init(td);
1416 if (err)
1417 goto err_out;
1418 }
1419
1420 return 0;
1421
1422err_offset:
1423 log_err("%s: you need to specify valid offset=\n", o->name);
1424err_out:
1425 td_restore_runstate(td, old_state);
1426 return 1;
1427}
1428
1429bool pre_read_files(struct thread_data *td)
1430{
1431 struct fio_file *f;
1432 unsigned int i;
1433
1434 dprint(FD_FILE, "pre_read files\n");
1435
1436 for_each_file(td, f, i) {
1437 if (!pre_read_file(td, f))
1438 return false;
1439 }
1440
1441 return true;
1442}
1443
1444static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1445{
1446 unsigned int range_size, seed;
1447 uint64_t nranges;
1448 uint64_t fsize;
1449
1450 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1451 fsize = min(f->real_file_size, f->io_size);
1452
1453 nranges = (fsize + range_size - 1ULL) / range_size;
1454
1455 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number *
1456 td->rand_seeds[FIO_RAND_BLOCK_OFF];
1457
1458 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1459 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, td->o.random_center.u.f, seed);
1460 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1461 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, td->o.random_center.u.f, seed);
1462 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1463 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, td->o.random_center.u.f, seed);
1464}
1465
1466static bool init_rand_distribution(struct thread_data *td)
1467{
1468 struct fio_file *f;
1469 unsigned int i;
1470 int state;
1471
1472 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM ||
1473 td->o.random_distribution == FIO_RAND_DIST_ZONED ||
1474 td->o.random_distribution == FIO_RAND_DIST_ZONED_ABS)
1475 return false;
1476
1477 state = td_bump_runstate(td, TD_SETTING_UP);
1478
1479 for_each_file(td, f, i)
1480 __init_rand_distribution(td, f);
1481
1482 td_restore_runstate(td, state);
1483 return true;
1484}
1485
1486/*
1487 * Check if the number of blocks exceeds the randomness capability of
1488 * the selected generator. Tausworthe is 32-bit, the others are fully
1489 * 64-bit capable.
1490 */
1491static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1492 uint64_t blocks)
1493{
1494 if (blocks <= FRAND32_MAX)
1495 return 0;
1496 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1497 return 0;
1498
1499 /*
1500 * If the user hasn't specified a random generator, switch
1501 * to tausworthe64 with informational warning. If the user did
1502 * specify one, just warn.
1503 */
1504 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1505 f->file_name);
1506
1507 if (!fio_option_is_set(&td->o, random_generator)) {
1508 log_info("fio: Switching to tausworthe64. Use the "
1509 "random_generator= option to get rid of this "
1510 "warning.\n");
1511 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1512 return 0;
1513 }
1514
1515 /*
1516 * Just make this information to avoid breaking scripts.
1517 */
1518 log_info("fio: Use the random_generator= option to switch to lfsr or "
1519 "tausworthe64.\n");
1520 return 0;
1521}
1522
1523bool init_random_map(struct thread_data *td)
1524{
1525 unsigned long long blocks;
1526 struct fio_file *f;
1527 unsigned int i;
1528
1529 if (init_rand_distribution(td))
1530 return true;
1531 if (!td_random(td))
1532 return true;
1533
1534 for_each_file(td, f, i) {
1535 uint64_t fsize = min(f->real_file_size, f->io_size);
1536
1537 if (td->o.zone_mode == ZONE_MODE_STRIDED)
1538 fsize = td->o.zone_range;
1539
1540 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1541
1542 if (check_rand_gen_limits(td, f, blocks))
1543 return false;
1544
1545 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1546 uint64_t seed;
1547
1548 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1549
1550 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1551 fio_file_set_lfsr(f);
1552 continue;
1553 } else {
1554 log_err("fio: failed initializing LFSR\n");
1555 return false;
1556 }
1557 } else if (!td->o.norandommap) {
1558 f->io_axmap = axmap_new(blocks);
1559 if (f->io_axmap) {
1560 fio_file_set_axmap(f);
1561 continue;
1562 }
1563 } else if (td->o.norandommap)
1564 continue;
1565
1566 if (!td->o.softrandommap) {
1567 log_err("fio: failed allocating random map. If running"
1568 " a large number of jobs, try the 'norandommap'"
1569 " option or set 'softrandommap'. Or give"
1570 " a larger --alloc-size to fio.\n");
1571 return false;
1572 }
1573
1574 log_info("fio: file %s failed allocating random map. Running "
1575 "job without.\n", f->file_name);
1576 }
1577
1578 return true;
1579}
1580
1581void close_files(struct thread_data *td)
1582{
1583 struct fio_file *f;
1584 unsigned int i;
1585
1586 for_each_file(td, f, i) {
1587 if (fio_file_open(f))
1588 td_io_close_file(td, f);
1589 }
1590}
1591
1592void fio_file_free(struct fio_file *f)
1593{
1594 if (fio_file_axmap(f))
1595 axmap_free(f->io_axmap);
1596 if (f->ruhs_info)
1597 sfree(f->ruhs_info);
1598 if (!fio_file_smalloc(f)) {
1599 free(f->file_name);
1600 free(f);
1601 } else {
1602 sfree(f->file_name);
1603 sfree(f);
1604 }
1605}
1606
1607void close_and_free_files(struct thread_data *td)
1608{
1609 struct fio_file *f;
1610 unsigned int i;
1611
1612 dprint(FD_FILE, "close files\n");
1613
1614 for_each_file(td, f, i) {
1615 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1616 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1617 td_io_unlink_file(td, f);
1618 }
1619
1620 if (fio_file_open(f))
1621 td_io_close_file(td, f);
1622
1623 remove_file_hash(f);
1624
1625 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1626 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1627 td_io_unlink_file(td, f);
1628 }
1629
1630 zbd_close_file(f);
1631 fdp_free_ruhs_info(f);
1632 fio_file_free(f);
1633 }
1634
1635 td->o.filename = NULL;
1636 free(td->files);
1637 free(td->file_locks);
1638 td->files_index = 0;
1639 td->files = NULL;
1640 td->file_locks = NULL;
1641 td->o.file_lock_mode = FILE_LOCK_NONE;
1642 td->o.nr_files = 0;
1643}
1644
1645static void get_file_type(struct fio_file *f)
1646{
1647 struct stat sb;
1648
1649 if (!strcmp(f->file_name, "-"))
1650 f->filetype = FIO_TYPE_PIPE;
1651 else
1652 f->filetype = FIO_TYPE_FILE;
1653
1654#ifdef WIN32
1655 /* \\.\ is the device namespace in Windows, where every file is
1656 * a block device */
1657 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1658 f->filetype = FIO_TYPE_BLOCK;
1659#endif
1660
1661 if (!stat(f->file_name, &sb)) {
1662 if (S_ISBLK(sb.st_mode))
1663 f->filetype = FIO_TYPE_BLOCK;
1664 else if (S_ISCHR(sb.st_mode))
1665 f->filetype = FIO_TYPE_CHAR;
1666 else if (S_ISFIFO(sb.st_mode))
1667 f->filetype = FIO_TYPE_PIPE;
1668 }
1669}
1670
1671static bool __is_already_allocated(const char *fname, bool set)
1672{
1673 struct flist_head *entry;
1674 bool ret;
1675
1676 ret = file_bloom_exists(fname, set);
1677 if (!ret)
1678 return ret;
1679
1680 flist_for_each(entry, &filename_list) {
1681 struct file_name *fn;
1682
1683 fn = flist_entry(entry, struct file_name, list);
1684
1685 if (!strcmp(fn->filename, fname))
1686 return true;
1687 }
1688
1689 return false;
1690}
1691
1692static bool is_already_allocated(const char *fname)
1693{
1694 bool ret;
1695
1696 fio_file_hash_lock();
1697 ret = __is_already_allocated(fname, false);
1698 fio_file_hash_unlock();
1699
1700 return ret;
1701}
1702
1703static void set_already_allocated(const char *fname)
1704{
1705 struct file_name *fn;
1706
1707 fn = malloc(sizeof(struct file_name));
1708 fn->filename = strdup(fname);
1709
1710 fio_file_hash_lock();
1711 if (!__is_already_allocated(fname, true)) {
1712 flist_add_tail(&fn->list, &filename_list);
1713 fn = NULL;
1714 }
1715 fio_file_hash_unlock();
1716
1717 if (fn) {
1718 free(fn->filename);
1719 free(fn);
1720 }
1721}
1722
1723static void free_already_allocated(void)
1724{
1725 struct flist_head *entry, *tmp;
1726 struct file_name *fn;
1727
1728 if (flist_empty(&filename_list))
1729 return;
1730
1731 fio_file_hash_lock();
1732 flist_for_each_safe(entry, tmp, &filename_list) {
1733 fn = flist_entry(entry, struct file_name, list);
1734 free(fn->filename);
1735 flist_del(&fn->list);
1736 free(fn);
1737 }
1738
1739 fio_file_hash_unlock();
1740}
1741
1742static struct fio_file *alloc_new_file(struct thread_data *td)
1743{
1744 struct fio_file *f;
1745
1746 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1747 f = calloc(1, sizeof(*f));
1748 else
1749 f = scalloc(1, sizeof(*f));
1750 if (!f) {
1751 assert(0);
1752 return NULL;
1753 }
1754
1755 f->fd = -1;
1756 f->shadow_fd = -1;
1757 fio_file_reset(td, f);
1758 if (!td_ioengine_flagged(td, FIO_NOFILEHASH))
1759 fio_file_set_smalloc(f);
1760 return f;
1761}
1762
1763bool exists_and_not_regfile(const char *filename)
1764{
1765 struct stat sb;
1766
1767 if (lstat(filename, &sb) == -1)
1768 return false;
1769
1770#ifndef WIN32 /* NOT Windows */
1771 if (S_ISREG(sb.st_mode))
1772 return false;
1773#else
1774 /* \\.\ is the device namespace in Windows, where every file
1775 * is a device node */
1776 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1777 return false;
1778#endif
1779
1780 return true;
1781}
1782
1783int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1784{
1785 int cur_files = td->files_index;
1786 char file_name[PATH_MAX];
1787 struct fio_file *f;
1788 int len = 0;
1789
1790 dprint(FD_FILE, "add file %s\n", fname);
1791
1792 if (td->o.directory)
1793 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1794 td->o.unique_filename);
1795
1796 sprintf(file_name + len, "%s", fname);
1797
1798 /* clean cloned siblings using existing files */
1799 if (numjob && is_already_allocated(file_name) &&
1800 !exists_and_not_regfile(fname))
1801 return 0;
1802
1803 f = alloc_new_file(td);
1804
1805 if (td->files_size <= td->files_index) {
1806 unsigned int new_size = td->o.nr_files + 1;
1807
1808 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1809
1810 td->files = realloc(td->files, new_size * sizeof(f));
1811 if (td->files == NULL) {
1812 log_err("fio: realloc OOM\n");
1813 assert(0);
1814 }
1815 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1816 td->file_locks = realloc(td->file_locks, new_size);
1817 if (!td->file_locks) {
1818 log_err("fio: realloc OOM\n");
1819 assert(0);
1820 }
1821 td->file_locks[cur_files] = FILE_LOCK_NONE;
1822 }
1823 td->files_size = new_size;
1824 }
1825 td->files[cur_files] = f;
1826 f->fileno = cur_files;
1827
1828 /*
1829 * init function, io engine may not be loaded yet
1830 */
1831 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1832 f->real_file_size = -1ULL;
1833
1834 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1835 f->file_name = strdup(file_name);
1836 else
1837 f->file_name = smalloc_strdup(file_name);
1838
1839 /* can't handle smalloc failure from here */
1840 assert(f->file_name);
1841
1842 get_file_type(f);
1843
1844 switch (td->o.file_lock_mode) {
1845 case FILE_LOCK_NONE:
1846 break;
1847 case FILE_LOCK_READWRITE:
1848 f->rwlock = fio_rwlock_init();
1849 break;
1850 case FILE_LOCK_EXCLUSIVE:
1851 f->lock = fio_sem_init(FIO_SEM_UNLOCKED);
1852 break;
1853 default:
1854 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1855 assert(0);
1856 }
1857
1858 td->files_index++;
1859
1860 if (td->o.numjobs > 1)
1861 set_already_allocated(file_name);
1862
1863 if (inc)
1864 td->o.nr_files++;
1865
1866 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1867 cur_files);
1868
1869 return cur_files;
1870}
1871
1872int add_file_exclusive(struct thread_data *td, const char *fname)
1873{
1874 struct fio_file *f;
1875 unsigned int i;
1876
1877 for_each_file(td, f, i) {
1878 if (!strcmp(f->file_name, fname))
1879 return i;
1880 }
1881
1882 return add_file(td, fname, 0, 1);
1883}
1884
1885void get_file(struct fio_file *f)
1886{
1887 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1888 assert(fio_file_open(f));
1889 f->references++;
1890}
1891
1892int put_file(struct thread_data *td, struct fio_file *f)
1893{
1894 int f_ret = 0, ret = 0;
1895
1896 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1897
1898 if (!fio_file_open(f)) {
1899 assert(f->fd == -1);
1900 return 0;
1901 }
1902
1903 assert(f->references);
1904 if (--f->references)
1905 return 0;
1906
1907 disk_util_dec(f->du);
1908
1909 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1910 unlock_file_all(td, f);
1911
1912 if (should_fsync(td) && td->o.fsync_on_close) {
1913 f_ret = fsync(f->fd);
1914 if (f_ret < 0)
1915 f_ret = errno;
1916 }
1917
1918 if (td->io_ops->close_file)
1919 ret = td->io_ops->close_file(td, f);
1920
1921 if (!ret)
1922 ret = f_ret;
1923
1924 td->nr_open_files--;
1925 fio_file_clear_closing(f);
1926 fio_file_clear_open(f);
1927 assert(f->fd == -1);
1928 return ret;
1929}
1930
1931void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1932{
1933 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1934 return;
1935
1936 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1937 if (ddir == DDIR_READ)
1938 fio_rwlock_read(f->rwlock);
1939 else
1940 fio_rwlock_write(f->rwlock);
1941 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1942 fio_sem_down(f->lock);
1943
1944 td->file_locks[f->fileno] = td->o.file_lock_mode;
1945}
1946
1947void unlock_file(struct thread_data *td, struct fio_file *f)
1948{
1949 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1950 return;
1951
1952 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1953 fio_rwlock_unlock(f->rwlock);
1954 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1955 fio_sem_up(f->lock);
1956
1957 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1958}
1959
1960void unlock_file_all(struct thread_data *td, struct fio_file *f)
1961{
1962 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1963 return;
1964 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1965 unlock_file(td, f);
1966}
1967
1968static bool recurse_dir(struct thread_data *td, const char *dirname)
1969{
1970 struct dirent *dir;
1971 bool ret = false;
1972 DIR *D;
1973
1974 D = opendir(dirname);
1975 if (!D) {
1976 char buf[FIO_VERROR_SIZE];
1977
1978 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1979 td_verror(td, errno, buf);
1980 return true;
1981 }
1982
1983 while ((dir = readdir(D)) != NULL) {
1984 char full_path[PATH_MAX];
1985 struct stat sb;
1986
1987 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1988 continue;
1989
1990 sprintf(full_path, "%s%c%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1991
1992 if (lstat(full_path, &sb) == -1) {
1993 if (errno != ENOENT) {
1994 td_verror(td, errno, "stat");
1995 ret = true;
1996 break;
1997 }
1998 }
1999
2000 if (S_ISREG(sb.st_mode)) {
2001 add_file(td, full_path, 0, 1);
2002 continue;
2003 }
2004 if (!S_ISDIR(sb.st_mode))
2005 continue;
2006
2007 ret = recurse_dir(td, full_path);
2008 if (ret)
2009 break;
2010 }
2011
2012 closedir(D);
2013 return ret;
2014}
2015
2016int add_dir_files(struct thread_data *td, const char *path)
2017{
2018 int ret = recurse_dir(td, path);
2019
2020 if (!ret)
2021 log_info("fio: opendir added %d files\n", td->o.nr_files);
2022
2023 return ret;
2024}
2025
2026void dup_files(struct thread_data *td, struct thread_data *org)
2027{
2028 struct fio_file *f;
2029 unsigned int i;
2030
2031 dprint(FD_FILE, "dup files: %d\n", org->files_index);
2032
2033 if (!org->files)
2034 return;
2035
2036 td->files = calloc(org->files_index, sizeof(f));
2037
2038 if (td->o.file_lock_mode != FILE_LOCK_NONE)
2039 td->file_locks = malloc(org->files_index);
2040
2041 assert(org->files_index >= org->o.nr_files);
2042 for_each_file(org, f, i) {
2043 struct fio_file *__f;
2044
2045 __f = alloc_new_file(td);
2046
2047 if (f->file_name) {
2048 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
2049 __f->file_name = strdup(f->file_name);
2050 else
2051 __f->file_name = smalloc_strdup(f->file_name);
2052
2053 /* can't handle smalloc failure from here */
2054 assert(__f->file_name);
2055 __f->filetype = f->filetype;
2056 }
2057
2058 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
2059 __f->lock = f->lock;
2060 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
2061 __f->rwlock = f->rwlock;
2062
2063 td->files[i] = __f;
2064 }
2065}
2066
2067/*
2068 * Returns the index that matches the filename, or -1 if not there
2069 */
2070int get_fileno(struct thread_data *td, const char *fname)
2071{
2072 struct fio_file *f;
2073 unsigned int i;
2074
2075 for_each_file(td, f, i)
2076 if (!strcmp(f->file_name, fname))
2077 return i;
2078
2079 return -1;
2080}
2081
2082/*
2083 * For log usage, where we add/open/close files automatically
2084 */
2085void free_release_files(struct thread_data *td)
2086{
2087 close_files(td);
2088 td->o.nr_files = 0;
2089 td->o.open_files = 0;
2090 td->files_index = 0;
2091}
2092
2093void fio_file_reset(struct thread_data *td, struct fio_file *f)
2094{
2095 int i;
2096
2097 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2098 f->last_pos[i] = f->file_offset;
2099 f->last_start[i] = -1ULL;
2100 }
2101
2102 if (fio_file_axmap(f))
2103 axmap_reset(f->io_axmap);
2104 else if (fio_file_lfsr(f))
2105 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
2106
2107 zbd_file_reset(td, f);
2108}
2109
2110bool fio_files_done(struct thread_data *td)
2111{
2112 struct fio_file *f;
2113 unsigned int i;
2114
2115 for_each_file(td, f, i)
2116 if (!fio_file_done(f))
2117 return false;
2118
2119 return true;
2120}
2121
2122/* free memory used in initialization phase only */
2123void filesetup_mem_free(void)
2124{
2125 free_already_allocated();
2126}
2127
2128/*
2129 * This function is for platforms which support direct I/O but not O_DIRECT.
2130 */
2131int fio_set_directio(struct thread_data *td, struct fio_file *f)
2132{
2133#ifdef FIO_OS_DIRECTIO
2134 int ret = fio_set_odirect(f);
2135
2136 if (ret) {
2137 td_verror(td, ret, "fio_set_directio");
2138#if defined(__sun__)
2139 if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
2140 log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
2141 } else {
2142 log_err("fio: the file system does not seem to support direct IO\n");
2143 }
2144#else
2145 log_err("fio: the file system does not seem to support direct IO\n");
2146#endif
2147 return -1;
2148 }
2149
2150 return 0;
2151#else
2152 log_err("fio: direct IO is not supported on this host operating system\n");
2153 return -1;
2154#endif
2155}
fio - Flexible IO Tester