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