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Drop obsolete comment on a race condition
[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#include <sys/mman.h>
9#include <sys/types.h>
10
11#include "fio.h"
12#include "smalloc.h"
13#include "filehash.h"
14#include "options.h"
15#include "os/os.h"
16#include "hash.h"
17#include "lib/axmap.h"
18
19#ifdef CONFIG_LINUX_FALLOCATE
20#include <linux/falloc.h>
21#endif
22
23static int root_warn;
24
25static FLIST_HEAD(filename_list);
26
27static inline void clear_error(struct thread_data *td)
28{
29 td->error = 0;
30 td->verror[0] = '\0';
31}
32
33/*
34 * Leaves f->fd open on success, caller must close
35 */
36static int extend_file(struct thread_data *td, struct fio_file *f)
37{
38 int r, new_layout = 0, unlink_file = 0, flags;
39 unsigned long long left;
40 unsigned int bs;
41 char *b = NULL;
42
43 if (read_only) {
44 log_err("fio: refusing extend of file due to read-only\n");
45 return 0;
46 }
47
48 /*
49 * check if we need to lay the file out complete again. fio
50 * does that for operations involving reads, or for writes
51 * where overwrite is set
52 */
53 if (td_read(td) ||
54 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
55 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
56 new_layout = 1;
57 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
58 unlink_file = 1;
59
60 if (unlink_file || new_layout) {
61 int ret;
62
63 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
64
65 ret = td_io_unlink_file(td, f);
66 if (ret != 0 && ret != ENOENT) {
67 td_verror(td, errno, "unlink");
68 return 1;
69 }
70 }
71
72 flags = O_WRONLY;
73 if (td->o.allow_create)
74 flags |= O_CREAT;
75 if (new_layout)
76 flags |= O_TRUNC;
77
78#ifdef WIN32
79 flags |= _O_BINARY;
80#endif
81
82 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
83 f->fd = open(f->file_name, flags, 0644);
84 if (f->fd < 0) {
85 int err = errno;
86
87 if (err == ENOENT && !td->o.allow_create)
88 log_err("fio: file creation disallowed by "
89 "allow_file_create=0\n");
90 else
91 td_verror(td, err, "open");
92 return 1;
93 }
94
95#ifdef CONFIG_POSIX_FALLOCATE
96 if (!td->o.fill_device) {
97 switch (td->o.fallocate_mode) {
98 case FIO_FALLOCATE_NONE:
99 break;
100 case FIO_FALLOCATE_POSIX:
101 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
102 f->file_name,
103 (unsigned long long) f->real_file_size);
104
105 r = posix_fallocate(f->fd, 0, f->real_file_size);
106 if (r > 0) {
107 log_err("fio: posix_fallocate fails: %s\n",
108 strerror(r));
109 }
110 break;
111#ifdef CONFIG_LINUX_FALLOCATE
112 case FIO_FALLOCATE_KEEP_SIZE:
113 dprint(FD_FILE,
114 "fallocate(FALLOC_FL_KEEP_SIZE) "
115 "file %s size %llu\n", f->file_name,
116 (unsigned long long) f->real_file_size);
117
118 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
119 f->real_file_size);
120 if (r != 0)
121 td_verror(td, errno, "fallocate");
122
123 break;
124#endif /* CONFIG_LINUX_FALLOCATE */
125 default:
126 log_err("fio: unknown fallocate mode: %d\n",
127 td->o.fallocate_mode);
128 assert(0);
129 }
130 }
131#endif /* CONFIG_POSIX_FALLOCATE */
132
133 if (!new_layout)
134 goto done;
135
136 /*
137 * The size will be -1ULL when fill_device is used, so don't truncate
138 * or fallocate this file, just write it
139 */
140 if (!td->o.fill_device) {
141 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
142 (unsigned long long) f->real_file_size);
143 if (ftruncate(f->fd, f->real_file_size) == -1) {
144 if (errno != EFBIG) {
145 td_verror(td, errno, "ftruncate");
146 goto err;
147 }
148 }
149 }
150
151 b = malloc(td->o.max_bs[DDIR_WRITE]);
152
153 left = f->real_file_size;
154 while (left && !td->terminate) {
155 bs = td->o.max_bs[DDIR_WRITE];
156 if (bs > left)
157 bs = left;
158
159 fill_io_buffer(td, b, bs, bs);
160
161 r = write(f->fd, b, bs);
162
163 if (r > 0) {
164 left -= r;
165 continue;
166 } else {
167 if (r < 0) {
168 int __e = errno;
169
170 if (__e == ENOSPC) {
171 if (td->o.fill_device)
172 break;
173 log_info("fio: ENOSPC on laying out "
174 "file, stopping\n");
175 break;
176 }
177 td_verror(td, errno, "write");
178 } else
179 td_verror(td, EIO, "write");
180
181 break;
182 }
183 }
184
185 if (td->terminate) {
186 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
187 td_io_unlink_file(td, f);
188 } else if (td->o.create_fsync) {
189 if (fsync(f->fd) < 0) {
190 td_verror(td, errno, "fsync");
191 goto err;
192 }
193 }
194 if (td->o.fill_device && !td_write(td)) {
195 fio_file_clear_size_known(f);
196 if (td_io_get_file_size(td, f))
197 goto err;
198 if (f->io_size > f->real_file_size)
199 f->io_size = f->real_file_size;
200 }
201
202 free(b);
203done:
204 return 0;
205err:
206 close(f->fd);
207 f->fd = -1;
208 if (b)
209 free(b);
210 return 1;
211}
212
213static int pre_read_file(struct thread_data *td, struct fio_file *f)
214{
215 int ret = 0, r, did_open = 0, old_runstate;
216 unsigned long long left;
217 unsigned int bs;
218 char *b;
219
220 if (td_ioengine_flagged(td, FIO_PIPEIO))
221 return 0;
222
223 if (!fio_file_open(f)) {
224 if (td->io_ops->open_file(td, f)) {
225 log_err("fio: cannot pre-read, failed to open file\n");
226 return 1;
227 }
228 did_open = 1;
229 }
230
231 old_runstate = td_bump_runstate(td, TD_PRE_READING);
232
233 bs = td->o.max_bs[DDIR_READ];
234 b = malloc(bs);
235 memset(b, 0, bs);
236
237 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
238 td_verror(td, errno, "lseek");
239 log_err("fio: failed to lseek pre-read file\n");
240 ret = 1;
241 goto error;
242 }
243
244 left = f->io_size;
245
246 while (left && !td->terminate) {
247 if (bs > left)
248 bs = left;
249
250 r = read(f->fd, b, bs);
251
252 if (r == (int) bs) {
253 left -= bs;
254 continue;
255 } else {
256 td_verror(td, EIO, "pre_read");
257 break;
258 }
259 }
260
261error:
262 td_restore_runstate(td, old_runstate);
263
264 if (did_open)
265 td->io_ops->close_file(td, f);
266
267 free(b);
268 return ret;
269}
270
271unsigned long long get_rand_file_size(struct thread_data *td)
272{
273 unsigned long long ret, sized;
274 uint64_t frand_max;
275 unsigned long r;
276
277 frand_max = rand_max(&td->file_size_state);
278 r = __rand(&td->file_size_state);
279 sized = td->o.file_size_high - td->o.file_size_low;
280 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
281 ret += td->o.file_size_low;
282 ret -= (ret % td->o.rw_min_bs);
283 return ret;
284}
285
286static int file_size(struct thread_data *td, struct fio_file *f)
287{
288 struct stat st;
289
290 if (stat(f->file_name, &st) == -1) {
291 td_verror(td, errno, "fstat");
292 return 1;
293 }
294
295 f->real_file_size = st.st_size;
296 return 0;
297}
298
299static int bdev_size(struct thread_data *td, struct fio_file *f)
300{
301 unsigned long long bytes = 0;
302 int r;
303
304 if (td->io_ops->open_file(td, f)) {
305 log_err("fio: failed opening blockdev %s for size check\n",
306 f->file_name);
307 return 1;
308 }
309
310 r = blockdev_size(f, &bytes);
311 if (r) {
312 td_verror(td, r, "blockdev_size");
313 goto err;
314 }
315
316 if (!bytes) {
317 log_err("%s: zero sized block device?\n", f->file_name);
318 goto err;
319 }
320
321 f->real_file_size = bytes;
322 td->io_ops->close_file(td, f);
323 return 0;
324err:
325 td->io_ops->close_file(td, f);
326 return 1;
327}
328
329static int char_size(struct thread_data *td, struct fio_file *f)
330{
331#ifdef FIO_HAVE_CHARDEV_SIZE
332 unsigned long long bytes = 0;
333 int r;
334
335 if (td->io_ops->open_file(td, f)) {
336 log_err("fio: failed opening chardev %s for size check\n",
337 f->file_name);
338 return 1;
339 }
340
341 r = chardev_size(f, &bytes);
342 if (r) {
343 td_verror(td, r, "chardev_size");
344 goto err;
345 }
346
347 if (!bytes) {
348 log_err("%s: zero sized char device?\n", f->file_name);
349 goto err;
350 }
351
352 f->real_file_size = bytes;
353 td->io_ops->close_file(td, f);
354 return 0;
355err:
356 td->io_ops->close_file(td, f);
357 return 1;
358#else
359 f->real_file_size = -1ULL;
360 return 0;
361#endif
362}
363
364static int get_file_size(struct thread_data *td, struct fio_file *f)
365{
366 int ret = 0;
367
368 if (fio_file_size_known(f))
369 return 0;
370
371 if (f->filetype == FIO_TYPE_FILE)
372 ret = file_size(td, f);
373 else if (f->filetype == FIO_TYPE_BLOCK)
374 ret = bdev_size(td, f);
375 else if (f->filetype == FIO_TYPE_CHAR)
376 ret = char_size(td, f);
377 else
378 f->real_file_size = -1ULL;
379
380 if (ret) {
381 f->real_file_size = -1ULL;
382 return ret;
383 }
384
385 if (f->file_offset > f->real_file_size) {
386 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
387 (unsigned long long) f->file_offset,
388 (unsigned long long) f->real_file_size);
389 return 1;
390 }
391
392 fio_file_set_size_known(f);
393 return 0;
394}
395
396static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
397 unsigned long long off,
398 unsigned long long len)
399{
400 int errval = 0, ret = 0;
401
402#ifdef CONFIG_ESX
403 return 0;
404#endif
405
406 if (len == -1ULL)
407 len = f->io_size;
408 if (off == -1ULL)
409 off = f->file_offset;
410
411 if (len == -1ULL || off == -1ULL)
412 return 0;
413
414 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
415 len);
416
417 if (td->io_ops->invalidate) {
418 ret = td->io_ops->invalidate(td, f);
419 if (ret < 0)
420 errval = ret;
421 } else if (f->filetype == FIO_TYPE_FILE) {
422 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
423 if (ret)
424 errval = ret;
425 } else if (f->filetype == FIO_TYPE_BLOCK) {
426 int retry_count = 0;
427
428 ret = blockdev_invalidate_cache(f);
429 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
430 /*
431 * Linux multipath devices reject ioctl while
432 * the maps are being updated. That window can
433 * last tens of milliseconds; we'll try up to
434 * a quarter of a second.
435 */
436 usleep(10000);
437 ret = blockdev_invalidate_cache(f);
438 }
439 if (ret < 0 && errno == EACCES && geteuid()) {
440 if (!root_warn) {
441 log_err("fio: only root may flush block "
442 "devices. Cache flush bypassed!\n");
443 root_warn = 1;
444 }
445 ret = 0;
446 }
447 if (ret < 0)
448 errval = errno;
449 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
450 ret = 0;
451
452 /*
453 * Cache flushing isn't a fatal condition, and we know it will
454 * happen on some platforms where we don't have the proper
455 * function to flush eg block device caches. So just warn and
456 * continue on our way.
457 */
458 if (errval)
459 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
460
461 return 0;
462
463}
464
465int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
466{
467 if (!fio_file_open(f))
468 return 0;
469
470 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
471}
472
473int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
474{
475 int ret = 0;
476
477 dprint(FD_FILE, "fd close %s\n", f->file_name);
478
479 remove_file_hash(f);
480
481 if (close(f->fd) < 0)
482 ret = errno;
483
484 f->fd = -1;
485
486 if (f->shadow_fd != -1) {
487 close(f->shadow_fd);
488 f->shadow_fd = -1;
489 }
490
491 f->engine_data = 0;
492 return ret;
493}
494
495int file_lookup_open(struct fio_file *f, int flags)
496{
497 struct fio_file *__f;
498 int from_hash;
499
500 __f = lookup_file_hash(f->file_name);
501 if (__f) {
502 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
503 f->lock = __f->lock;
504 from_hash = 1;
505 } else {
506 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
507 from_hash = 0;
508 }
509
510#ifdef WIN32
511 flags |= _O_BINARY;
512#endif
513
514 f->fd = open(f->file_name, flags, 0600);
515 return from_hash;
516}
517
518static int file_close_shadow_fds(struct thread_data *td)
519{
520 struct fio_file *f;
521 int num_closed = 0;
522 unsigned int i;
523
524 for_each_file(td, f, i) {
525 if (f->shadow_fd == -1)
526 continue;
527
528 close(f->shadow_fd);
529 f->shadow_fd = -1;
530 num_closed++;
531 }
532
533 return num_closed;
534}
535
536int generic_open_file(struct thread_data *td, struct fio_file *f)
537{
538 int is_std = 0;
539 int flags = 0;
540 int from_hash = 0;
541
542 dprint(FD_FILE, "fd open %s\n", f->file_name);
543
544 if (!strcmp(f->file_name, "-")) {
545 if (td_rw(td)) {
546 log_err("fio: can't read/write to stdin/out\n");
547 return 1;
548 }
549 is_std = 1;
550
551 /*
552 * move output logging to stderr, if we are writing to stdout
553 */
554 if (td_write(td))
555 f_out = stderr;
556 }
557
558 if (td_trim(td))
559 goto skip_flags;
560 if (td->o.odirect)
561 flags |= OS_O_DIRECT;
562 if (td->o.oatomic) {
563 if (!FIO_O_ATOMIC) {
564 td_verror(td, EINVAL, "OS does not support atomic IO");
565 return 1;
566 }
567 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
568 }
569 if (td->o.sync_io)
570 flags |= O_SYNC;
571 if (td->o.create_on_open && td->o.allow_create)
572 flags |= O_CREAT;
573skip_flags:
574 if (f->filetype != FIO_TYPE_FILE)
575 flags |= FIO_O_NOATIME;
576
577open_again:
578 if (td_write(td)) {
579 if (!read_only)
580 flags |= O_RDWR;
581
582 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
583 flags |= O_CREAT;
584
585 if (is_std)
586 f->fd = dup(STDOUT_FILENO);
587 else
588 from_hash = file_lookup_open(f, flags);
589 } else if (td_read(td)) {
590 if (f->filetype == FIO_TYPE_CHAR && !read_only)
591 flags |= O_RDWR;
592 else
593 flags |= O_RDONLY;
594
595 if (is_std)
596 f->fd = dup(STDIN_FILENO);
597 else
598 from_hash = file_lookup_open(f, flags);
599 } else { //td trim
600 flags |= O_RDWR;
601 from_hash = file_lookup_open(f, flags);
602 }
603
604 if (f->fd == -1) {
605 char buf[FIO_VERROR_SIZE];
606 int __e = errno;
607
608 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
609 flags &= ~FIO_O_NOATIME;
610 goto open_again;
611 }
612 if (__e == EMFILE && file_close_shadow_fds(td))
613 goto open_again;
614
615 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
616
617 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
618 log_err("fio: looks like your file system does not " \
619 "support direct=1/buffered=0\n");
620 }
621
622 td_verror(td, __e, buf);
623 return 1;
624 }
625
626 if (!from_hash && f->fd != -1) {
627 if (add_file_hash(f)) {
628 int fio_unused ret;
629
630 /*
631 * Stash away descriptor for later close. This is to
632 * work-around a "feature" on Linux, where a close of
633 * an fd that has been opened for write will trigger
634 * udev to call blkid to check partitions, fs id, etc.
635 * That pollutes the device cache, which can slow down
636 * unbuffered accesses.
637 */
638 if (f->shadow_fd == -1)
639 f->shadow_fd = f->fd;
640 else {
641 /*
642 * OK to ignore, we haven't done anything
643 * with it
644 */
645 ret = generic_close_file(td, f);
646 }
647 goto open_again;
648 }
649 }
650
651 return 0;
652}
653
654int generic_get_file_size(struct thread_data *td, struct fio_file *f)
655{
656 return get_file_size(td, f);
657}
658
659/*
660 * open/close all files, so that ->real_file_size gets set
661 */
662static int get_file_sizes(struct thread_data *td)
663{
664 struct fio_file *f;
665 unsigned int i;
666 int err = 0;
667
668 for_each_file(td, f, i) {
669 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
670 f->file_name);
671
672 if (td_io_get_file_size(td, f)) {
673 if (td->error != ENOENT) {
674 log_err("%s\n", td->verror);
675 err = 1;
676 break;
677 }
678 clear_error(td);
679 }
680
681 if (f->real_file_size == -1ULL && td->o.size)
682 f->real_file_size = td->o.size / td->o.nr_files;
683 }
684
685 return err;
686}
687
688struct fio_mount {
689 struct flist_head list;
690 const char *base;
691 char __base[256];
692 unsigned int key;
693};
694
695/*
696 * Get free number of bytes for each file on each unique mount.
697 */
698static unsigned long long get_fs_free_counts(struct thread_data *td)
699{
700 struct flist_head *n, *tmp;
701 unsigned long long ret = 0;
702 struct fio_mount *fm;
703 FLIST_HEAD(list);
704 struct fio_file *f;
705 unsigned int i;
706
707 for_each_file(td, f, i) {
708 struct stat sb;
709 char buf[256];
710
711 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
712 if (f->real_file_size != -1ULL)
713 ret += f->real_file_size;
714 continue;
715 } else if (f->filetype != FIO_TYPE_FILE)
716 continue;
717
718 buf[255] = '\0';
719 strncpy(buf, f->file_name, 255);
720
721 if (stat(buf, &sb) < 0) {
722 if (errno != ENOENT)
723 break;
724 strcpy(buf, ".");
725 if (stat(buf, &sb) < 0)
726 break;
727 }
728
729 fm = NULL;
730 flist_for_each(n, &list) {
731 fm = flist_entry(n, struct fio_mount, list);
732 if (fm->key == sb.st_dev)
733 break;
734
735 fm = NULL;
736 }
737
738 if (fm)
739 continue;
740
741 fm = calloc(1, sizeof(*fm));
742 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
743 fm->base = basename(fm->__base);
744 fm->key = sb.st_dev;
745 flist_add(&fm->list, &list);
746 }
747
748 flist_for_each_safe(n, tmp, &list) {
749 unsigned long long sz;
750
751 fm = flist_entry(n, struct fio_mount, list);
752 flist_del(&fm->list);
753
754 sz = get_fs_free_size(fm->base);
755 if (sz && sz != -1ULL)
756 ret += sz;
757
758 free(fm);
759 }
760
761 return ret;
762}
763
764uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
765{
766 struct thread_options *o = &td->o;
767
768 if (o->file_append && f->filetype == FIO_TYPE_FILE)
769 return f->real_file_size;
770
771 return td->o.start_offset +
772 td->subjob_number * td->o.offset_increment;
773}
774
775/*
776 * Open the files and setup files sizes, creating files if necessary.
777 */
778int setup_files(struct thread_data *td)
779{
780 unsigned long long total_size, extend_size;
781 struct thread_options *o = &td->o;
782 struct fio_file *f;
783 unsigned int i, nr_fs_extra = 0;
784 int err = 0, need_extend;
785 int old_state;
786 const unsigned int bs = td_min_bs(td);
787 uint64_t fs = 0;
788
789 dprint(FD_FILE, "setup files\n");
790
791 old_state = td_bump_runstate(td, TD_SETTING_UP);
792
793 if (o->read_iolog_file)
794 goto done;
795
796 /*
797 * if ioengine defines a setup() method, it's responsible for
798 * opening the files and setting f->real_file_size to indicate
799 * the valid range for that file.
800 */
801 if (td->io_ops->setup)
802 err = td->io_ops->setup(td);
803 else
804 err = get_file_sizes(td);
805
806 if (err)
807 goto err_out;
808
809 /*
810 * check sizes. if the files/devices do not exist and the size
811 * isn't passed to fio, abort.
812 */
813 total_size = 0;
814 for_each_file(td, f, i) {
815 f->fileno = i;
816 if (f->real_file_size == -1ULL)
817 total_size = -1ULL;
818 else
819 total_size += f->real_file_size;
820 }
821
822 if (o->fill_device)
823 td->fill_device_size = get_fs_free_counts(td);
824
825 /*
826 * device/file sizes are zero and no size given, punt
827 */
828 if ((!total_size || total_size == -1ULL) && !o->size &&
829 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
830 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
831 log_err("%s: you need to specify size=\n", o->name);
832 td_verror(td, EINVAL, "total_file_size");
833 goto err_out;
834 }
835
836 /*
837 * Calculate per-file size and potential extra size for the
838 * first files, if needed.
839 */
840 if (!o->file_size_low && o->nr_files) {
841 uint64_t all_fs;
842
843 fs = o->size / o->nr_files;
844 all_fs = fs * o->nr_files;
845
846 if (all_fs < o->size)
847 nr_fs_extra = (o->size - all_fs) / bs;
848 }
849
850 /*
851 * now file sizes are known, so we can set ->io_size. if size= is
852 * not given, ->io_size is just equal to ->real_file_size. if size
853 * is given, ->io_size is size / nr_files.
854 */
855 extend_size = total_size = 0;
856 need_extend = 0;
857 for_each_file(td, f, i) {
858 f->file_offset = get_start_offset(td, f);
859
860 if (!o->file_size_low) {
861 /*
862 * no file size range given, file size is equal to
863 * total size divided by number of files. If that is
864 * zero, set it to the real file size. If the size
865 * doesn't divide nicely with the min blocksize,
866 * make the first files bigger.
867 */
868 f->io_size = fs;
869 if (nr_fs_extra) {
870 nr_fs_extra--;
871 f->io_size += bs;
872 }
873
874 if (!f->io_size)
875 f->io_size = f->real_file_size - f->file_offset;
876 } else if (f->real_file_size < o->file_size_low ||
877 f->real_file_size > o->file_size_high) {
878 if (f->file_offset > o->file_size_low)
879 goto err_offset;
880 /*
881 * file size given. if it's fixed, use that. if it's a
882 * range, generate a random size in-between.
883 */
884 if (o->file_size_low == o->file_size_high)
885 f->io_size = o->file_size_low - f->file_offset;
886 else {
887 f->io_size = get_rand_file_size(td)
888 - f->file_offset;
889 }
890 } else
891 f->io_size = f->real_file_size - f->file_offset;
892
893 if (f->io_size == -1ULL)
894 total_size = -1ULL;
895 else {
896 if (o->size_percent) {
897 f->io_size = (f->io_size * o->size_percent) / 100;
898 f->io_size -= (f->io_size % td_min_bs(td));
899 }
900 total_size += f->io_size;
901 }
902
903 if (f->filetype == FIO_TYPE_FILE &&
904 (f->io_size + f->file_offset) > f->real_file_size &&
905 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
906 if (!o->create_on_open) {
907 need_extend++;
908 extend_size += (f->io_size + f->file_offset);
909 } else
910 f->real_file_size = f->io_size + f->file_offset;
911 fio_file_set_extend(f);
912 }
913 }
914
915 if (td->o.block_error_hist) {
916 int len;
917
918 assert(td->o.nr_files == 1); /* checked in fixup_options */
919 f = td->files[0];
920 len = f->io_size / td->o.bs[DDIR_TRIM];
921 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
922 log_err("fio: cannot calculate block histogram with "
923 "%d trim blocks, maximum %d\n",
924 len, MAX_NR_BLOCK_INFOS);
925 td_verror(td, EINVAL, "block_error_hist");
926 goto err_out;
927 }
928
929 td->ts.nr_block_infos = len;
930 for (i = 0; i < len; i++)
931 td->ts.block_infos[i] =
932 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
933 } else
934 td->ts.nr_block_infos = 0;
935
936 if (!o->size || (total_size && o->size > total_size))
937 o->size = total_size;
938
939 if (o->size < td_min_bs(td)) {
940 log_err("fio: blocksize too large for data set\n");
941 goto err_out;
942 }
943
944 /*
945 * See if we need to extend some files
946 */
947 if (need_extend) {
948 temp_stall_ts = 1;
949 if (output_format & FIO_OUTPUT_NORMAL)
950 log_info("%s: Laying out IO file(s) (%u file(s) / %lluMiB)\n",
951 o->name, need_extend, extend_size >> 20);
952
953 for_each_file(td, f, i) {
954 unsigned long long old_len = -1ULL, extend_len = -1ULL;
955
956 if (!fio_file_extend(f))
957 continue;
958
959 assert(f->filetype == FIO_TYPE_FILE);
960 fio_file_clear_extend(f);
961 if (!o->fill_device) {
962 old_len = f->real_file_size;
963 extend_len = f->io_size + f->file_offset -
964 old_len;
965 }
966 f->real_file_size = (f->io_size + f->file_offset);
967 err = extend_file(td, f);
968 if (err)
969 break;
970
971 err = __file_invalidate_cache(td, f, old_len,
972 extend_len);
973
974 /*
975 * Shut up static checker
976 */
977 if (f->fd != -1)
978 close(f->fd);
979
980 f->fd = -1;
981 if (err)
982 break;
983 }
984 temp_stall_ts = 0;
985 }
986
987 if (err)
988 goto err_out;
989
990 if (!o->zone_size)
991 o->zone_size = o->size;
992
993 /*
994 * iolog already set the total io size, if we read back
995 * stored entries.
996 */
997 if (!o->read_iolog_file) {
998 if (o->io_limit)
999 td->total_io_size = o->io_limit * o->loops;
1000 else
1001 td->total_io_size = o->size * o->loops;
1002 }
1003
1004done:
1005 if (o->create_only)
1006 td->done = 1;
1007
1008 td_restore_runstate(td, old_state);
1009 return 0;
1010err_offset:
1011 log_err("%s: you need to specify valid offset=\n", o->name);
1012err_out:
1013 td_restore_runstate(td, old_state);
1014 return 1;
1015}
1016
1017int pre_read_files(struct thread_data *td)
1018{
1019 struct fio_file *f;
1020 unsigned int i;
1021
1022 dprint(FD_FILE, "pre_read files\n");
1023
1024 for_each_file(td, f, i) {
1025 pre_read_file(td, f);
1026 }
1027
1028 return 1;
1029}
1030
1031static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1032{
1033 unsigned int range_size, seed;
1034 unsigned long nranges;
1035 uint64_t fsize;
1036
1037 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1038 fsize = min(f->real_file_size, f->io_size);
1039
1040 nranges = (fsize + range_size - 1) / range_size;
1041
1042 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1043 if (!td->o.rand_repeatable)
1044 seed = td->rand_seeds[4];
1045
1046 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1047 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1048 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1049 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1050 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1051 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1052
1053 return 1;
1054}
1055
1056static int init_rand_distribution(struct thread_data *td)
1057{
1058 struct fio_file *f;
1059 unsigned int i;
1060 int state;
1061
1062 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1063 return 0;
1064
1065 state = td_bump_runstate(td, TD_SETTING_UP);
1066
1067 for_each_file(td, f, i)
1068 __init_rand_distribution(td, f);
1069
1070 td_restore_runstate(td, state);
1071
1072 return 1;
1073}
1074
1075/*
1076 * Check if the number of blocks exceeds the randomness capability of
1077 * the selected generator. Tausworthe is 32-bit, the others are fullly
1078 * 64-bit capable.
1079 */
1080static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1081 uint64_t blocks)
1082{
1083 if (blocks <= FRAND32_MAX)
1084 return 0;
1085 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1086 return 0;
1087
1088 /*
1089 * If the user hasn't specified a random generator, switch
1090 * to tausworthe64 with informational warning. If the user did
1091 * specify one, just warn.
1092 */
1093 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1094 f->file_name);
1095
1096 if (!fio_option_is_set(&td->o, random_generator)) {
1097 log_info("fio: Switching to tausworthe64. Use the "
1098 "random_generator= option to get rid of this "
1099 "warning.\n");
1100 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1101 return 0;
1102 }
1103
1104 /*
1105 * Just make this information to avoid breaking scripts.
1106 */
1107 log_info("fio: Use the random_generator= option to switch to lfsr or "
1108 "tausworthe64.\n");
1109 return 0;
1110}
1111
1112int init_random_map(struct thread_data *td)
1113{
1114 unsigned long long blocks;
1115 struct fio_file *f;
1116 unsigned int i;
1117
1118 if (init_rand_distribution(td))
1119 return 0;
1120 if (!td_random(td))
1121 return 0;
1122
1123 for_each_file(td, f, i) {
1124 uint64_t fsize = min(f->real_file_size, f->io_size);
1125
1126 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1127
1128 if (check_rand_gen_limits(td, f, blocks))
1129 return 1;
1130
1131 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1132 unsigned long seed;
1133
1134 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1135
1136 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1137 fio_file_set_lfsr(f);
1138 continue;
1139 }
1140 } else if (!td->o.norandommap) {
1141 f->io_axmap = axmap_new(blocks);
1142 if (f->io_axmap) {
1143 fio_file_set_axmap(f);
1144 continue;
1145 }
1146 } else if (td->o.norandommap)
1147 continue;
1148
1149 if (!td->o.softrandommap) {
1150 log_err("fio: failed allocating random map. If running"
1151 " a large number of jobs, try the 'norandommap'"
1152 " option or set 'softrandommap'. Or give"
1153 " a larger --alloc-size to fio.\n");
1154 return 1;
1155 }
1156
1157 log_info("fio: file %s failed allocating random map. Running "
1158 "job without.\n", f->file_name);
1159 }
1160
1161 return 0;
1162}
1163
1164void close_files(struct thread_data *td)
1165{
1166 struct fio_file *f;
1167 unsigned int i;
1168
1169 for_each_file(td, f, i) {
1170 if (fio_file_open(f))
1171 td_io_close_file(td, f);
1172 }
1173}
1174
1175void close_and_free_files(struct thread_data *td)
1176{
1177 struct fio_file *f;
1178 unsigned int i;
1179
1180 dprint(FD_FILE, "close files\n");
1181
1182 for_each_file(td, f, i) {
1183 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1184 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1185 td_io_unlink_file(td, f);
1186 }
1187
1188 if (fio_file_open(f))
1189 td_io_close_file(td, f);
1190
1191 remove_file_hash(f);
1192
1193 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1194 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1195 td_io_unlink_file(td, f);
1196 }
1197
1198 sfree(f->file_name);
1199 f->file_name = NULL;
1200 if (fio_file_axmap(f)) {
1201 axmap_free(f->io_axmap);
1202 f->io_axmap = NULL;
1203 }
1204 sfree(f);
1205 }
1206
1207 td->o.filename = NULL;
1208 free(td->files);
1209 free(td->file_locks);
1210 td->files_index = 0;
1211 td->files = NULL;
1212 td->file_locks = NULL;
1213 td->o.file_lock_mode = FILE_LOCK_NONE;
1214 td->o.nr_files = 0;
1215}
1216
1217static void get_file_type(struct fio_file *f)
1218{
1219 struct stat sb;
1220
1221 if (!strcmp(f->file_name, "-"))
1222 f->filetype = FIO_TYPE_PIPE;
1223 else
1224 f->filetype = FIO_TYPE_FILE;
1225
1226#ifdef WIN32
1227 /* \\.\ is the device namespace in Windows, where every file is
1228 * a block device */
1229 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1230 f->filetype = FIO_TYPE_BLOCK;
1231#endif
1232
1233 if (!stat(f->file_name, &sb)) {
1234 if (S_ISBLK(sb.st_mode))
1235 f->filetype = FIO_TYPE_BLOCK;
1236 else if (S_ISCHR(sb.st_mode))
1237 f->filetype = FIO_TYPE_CHAR;
1238 else if (S_ISFIFO(sb.st_mode))
1239 f->filetype = FIO_TYPE_PIPE;
1240 }
1241}
1242
1243static bool __is_already_allocated(const char *fname, bool set)
1244{
1245 struct flist_head *entry;
1246 bool ret;
1247
1248 ret = file_bloom_exists(fname, set);
1249 if (!ret)
1250 return ret;
1251
1252 flist_for_each(entry, &filename_list) {
1253 struct file_name *fn;
1254
1255 fn = flist_entry(entry, struct file_name, list);
1256
1257 if (!strcmp(fn->filename, fname))
1258 return true;
1259 }
1260
1261 return false;
1262}
1263
1264static bool is_already_allocated(const char *fname)
1265{
1266 bool ret;
1267
1268 fio_file_hash_lock();
1269 ret = __is_already_allocated(fname, false);
1270 fio_file_hash_unlock();
1271
1272 return ret;
1273}
1274
1275static void set_already_allocated(const char *fname)
1276{
1277 struct file_name *fn;
1278
1279 fn = malloc(sizeof(struct file_name));
1280 fn->filename = strdup(fname);
1281
1282 fio_file_hash_lock();
1283 if (!__is_already_allocated(fname, true)) {
1284 flist_add_tail(&fn->list, &filename_list);
1285 fn = NULL;
1286 }
1287 fio_file_hash_unlock();
1288
1289 if (fn) {
1290 free(fn->filename);
1291 free(fn);
1292 }
1293}
1294
1295static void free_already_allocated(void)
1296{
1297 struct flist_head *entry, *tmp;
1298 struct file_name *fn;
1299
1300 if (flist_empty(&filename_list))
1301 return;
1302
1303 fio_file_hash_lock();
1304 flist_for_each_safe(entry, tmp, &filename_list) {
1305 fn = flist_entry(entry, struct file_name, list);
1306 free(fn->filename);
1307 flist_del(&fn->list);
1308 free(fn);
1309 }
1310
1311 fio_file_hash_unlock();
1312}
1313
1314static struct fio_file *alloc_new_file(struct thread_data *td)
1315{
1316 struct fio_file *f;
1317
1318 f = smalloc(sizeof(*f));
1319 if (!f) {
1320 assert(0);
1321 return NULL;
1322 }
1323
1324 f->fd = -1;
1325 f->shadow_fd = -1;
1326 fio_file_reset(td, f);
1327 return f;
1328}
1329
1330bool exists_and_not_regfile(const char *filename)
1331{
1332 struct stat sb;
1333
1334 if (lstat(filename, &sb) == -1)
1335 return false;
1336
1337#ifndef WIN32 /* NOT Windows */
1338 if (S_ISREG(sb.st_mode))
1339 return false;
1340#else
1341 /* \\.\ is the device namespace in Windows, where every file
1342 * is a device node */
1343 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1344 return false;
1345#endif
1346
1347 return true;
1348}
1349
1350int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1351{
1352 int cur_files = td->files_index;
1353 char file_name[PATH_MAX];
1354 struct fio_file *f;
1355 int len = 0;
1356
1357 dprint(FD_FILE, "add file %s\n", fname);
1358
1359 if (td->o.directory)
1360 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1361 td->o.unique_filename);
1362
1363 sprintf(file_name + len, "%s", fname);
1364
1365 /* clean cloned siblings using existing files */
1366 if (numjob && is_already_allocated(file_name) &&
1367 !exists_and_not_regfile(fname))
1368 return 0;
1369
1370 f = alloc_new_file(td);
1371
1372 if (td->files_size <= td->files_index) {
1373 unsigned int new_size = td->o.nr_files + 1;
1374
1375 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1376
1377 td->files = realloc(td->files, new_size * sizeof(f));
1378 if (td->files == NULL) {
1379 log_err("fio: realloc OOM\n");
1380 assert(0);
1381 }
1382 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1383 td->file_locks = realloc(td->file_locks, new_size);
1384 if (!td->file_locks) {
1385 log_err("fio: realloc OOM\n");
1386 assert(0);
1387 }
1388 td->file_locks[cur_files] = FILE_LOCK_NONE;
1389 }
1390 td->files_size = new_size;
1391 }
1392 td->files[cur_files] = f;
1393 f->fileno = cur_files;
1394
1395 /*
1396 * init function, io engine may not be loaded yet
1397 */
1398 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1399 f->real_file_size = -1ULL;
1400
1401 f->file_name = smalloc_strdup(file_name);
1402 if (!f->file_name)
1403 assert(0);
1404
1405 get_file_type(f);
1406
1407 switch (td->o.file_lock_mode) {
1408 case FILE_LOCK_NONE:
1409 break;
1410 case FILE_LOCK_READWRITE:
1411 f->rwlock = fio_rwlock_init();
1412 break;
1413 case FILE_LOCK_EXCLUSIVE:
1414 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1415 break;
1416 default:
1417 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1418 assert(0);
1419 }
1420
1421 td->files_index++;
1422 if (f->filetype == FIO_TYPE_FILE)
1423 td->nr_normal_files++;
1424
1425 set_already_allocated(file_name);
1426
1427 if (inc)
1428 td->o.nr_files++;
1429
1430 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1431 cur_files);
1432
1433 return cur_files;
1434}
1435
1436int add_file_exclusive(struct thread_data *td, const char *fname)
1437{
1438 struct fio_file *f;
1439 unsigned int i;
1440
1441 for_each_file(td, f, i) {
1442 if (!strcmp(f->file_name, fname))
1443 return i;
1444 }
1445
1446 return add_file(td, fname, 0, 1);
1447}
1448
1449void get_file(struct fio_file *f)
1450{
1451 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1452 assert(fio_file_open(f));
1453 f->references++;
1454}
1455
1456int put_file(struct thread_data *td, struct fio_file *f)
1457{
1458 int f_ret = 0, ret = 0;
1459
1460 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1461
1462 if (!fio_file_open(f)) {
1463 assert(f->fd == -1);
1464 return 0;
1465 }
1466
1467 assert(f->references);
1468 if (--f->references)
1469 return 0;
1470
1471 if (should_fsync(td) && td->o.fsync_on_close) {
1472 f_ret = fsync(f->fd);
1473 if (f_ret < 0)
1474 f_ret = errno;
1475 }
1476
1477 if (td->io_ops->close_file)
1478 ret = td->io_ops->close_file(td, f);
1479
1480 if (!ret)
1481 ret = f_ret;
1482
1483 td->nr_open_files--;
1484 fio_file_clear_open(f);
1485 assert(f->fd == -1);
1486 return ret;
1487}
1488
1489void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1490{
1491 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1492 return;
1493
1494 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1495 if (ddir == DDIR_READ)
1496 fio_rwlock_read(f->rwlock);
1497 else
1498 fio_rwlock_write(f->rwlock);
1499 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1500 fio_mutex_down(f->lock);
1501
1502 td->file_locks[f->fileno] = td->o.file_lock_mode;
1503}
1504
1505void unlock_file(struct thread_data *td, struct fio_file *f)
1506{
1507 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1508 return;
1509
1510 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1511 fio_rwlock_unlock(f->rwlock);
1512 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1513 fio_mutex_up(f->lock);
1514
1515 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1516}
1517
1518void unlock_file_all(struct thread_data *td, struct fio_file *f)
1519{
1520 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1521 return;
1522 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1523 unlock_file(td, f);
1524}
1525
1526static int recurse_dir(struct thread_data *td, const char *dirname)
1527{
1528 struct dirent *dir;
1529 int ret = 0;
1530 DIR *D;
1531
1532 D = opendir(dirname);
1533 if (!D) {
1534 char buf[FIO_VERROR_SIZE];
1535
1536 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1537 td_verror(td, errno, buf);
1538 return 1;
1539 }
1540
1541 while ((dir = readdir(D)) != NULL) {
1542 char full_path[PATH_MAX];
1543 struct stat sb;
1544
1545 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1546 continue;
1547
1548 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1549
1550 if (lstat(full_path, &sb) == -1) {
1551 if (errno != ENOENT) {
1552 td_verror(td, errno, "stat");
1553 ret = 1;
1554 break;
1555 }
1556 }
1557
1558 if (S_ISREG(sb.st_mode)) {
1559 add_file(td, full_path, 0, 1);
1560 continue;
1561 }
1562 if (!S_ISDIR(sb.st_mode))
1563 continue;
1564
1565 ret = recurse_dir(td, full_path);
1566 if (ret)
1567 break;
1568 }
1569
1570 closedir(D);
1571 return ret;
1572}
1573
1574int add_dir_files(struct thread_data *td, const char *path)
1575{
1576 int ret = recurse_dir(td, path);
1577
1578 if (!ret)
1579 log_info("fio: opendir added %d files\n", td->o.nr_files);
1580
1581 return ret;
1582}
1583
1584void dup_files(struct thread_data *td, struct thread_data *org)
1585{
1586 struct fio_file *f;
1587 unsigned int i;
1588
1589 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1590
1591 if (!org->files)
1592 return;
1593
1594 td->files = malloc(org->files_index * sizeof(f));
1595
1596 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1597 td->file_locks = malloc(org->files_index);
1598
1599 for_each_file(org, f, i) {
1600 struct fio_file *__f;
1601
1602 __f = alloc_new_file(td);
1603
1604 if (f->file_name) {
1605 __f->file_name = smalloc_strdup(f->file_name);
1606 if (!__f->file_name)
1607 assert(0);
1608
1609 __f->filetype = f->filetype;
1610 }
1611
1612 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1613 __f->lock = f->lock;
1614 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1615 __f->rwlock = f->rwlock;
1616
1617 td->files[i] = __f;
1618 }
1619}
1620
1621/*
1622 * Returns the index that matches the filename, or -1 if not there
1623 */
1624int get_fileno(struct thread_data *td, const char *fname)
1625{
1626 struct fio_file *f;
1627 unsigned int i;
1628
1629 for_each_file(td, f, i)
1630 if (!strcmp(f->file_name, fname))
1631 return i;
1632
1633 return -1;
1634}
1635
1636/*
1637 * For log usage, where we add/open/close files automatically
1638 */
1639void free_release_files(struct thread_data *td)
1640{
1641 close_files(td);
1642 td->o.nr_files = 0;
1643 td->o.open_files = 0;
1644 td->files_index = 0;
1645 td->nr_normal_files = 0;
1646}
1647
1648void fio_file_reset(struct thread_data *td, struct fio_file *f)
1649{
1650 int i;
1651
1652 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1653 f->last_pos[i] = f->file_offset;
1654 f->last_start[i] = -1ULL;
1655 }
1656
1657 if (fio_file_axmap(f))
1658 axmap_reset(f->io_axmap);
1659 else if (fio_file_lfsr(f))
1660 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1661}
1662
1663bool fio_files_done(struct thread_data *td)
1664{
1665 struct fio_file *f;
1666 unsigned int i;
1667
1668 for_each_file(td, f, i)
1669 if (!fio_file_done(f))
1670 return false;
1671
1672 return true;
1673}
1674
1675/* free memory used in initialization phase only */
1676void filesetup_mem_free(void)
1677{
1678 free_already_allocated();
1679}
fio - Flexible IO Tester