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Fix problem with fadvise() and fill_device option
[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 <sys/stat.h>
7#include <sys/mman.h>
8#include <sys/types.h>
9
10#include "fio.h"
11#include "smalloc.h"
12#include "filehash.h"
13
14static int root_warn;
15
16/*
17 * Leaves f->fd open on success, caller must close
18 */
19static int extend_file(struct thread_data *td, struct fio_file *f)
20{
21 int r, new_layout = 0, unlink_file = 0, flags;
22 unsigned long long left;
23 unsigned int bs;
24 char *b;
25
26 if (read_only) {
27 log_err("fio: refusing extend of file due to read-only\n");
28 return 0;
29 }
30
31 /*
32 * check if we need to lay the file out complete again. fio
33 * does that for operations involving reads, or for writes
34 * where overwrite is set
35 */
36 if (td_read(td) || (td_write(td) && td->o.overwrite) ||
37 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
38 new_layout = 1;
39 if (td_write(td) && !td->o.overwrite)
40 unlink_file = 1;
41
42 if (unlink_file || new_layout) {
43 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
44 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
45 td_verror(td, errno, "unlink");
46 return 1;
47 }
48 }
49
50 flags = O_WRONLY | O_CREAT;
51 if (new_layout)
52 flags |= O_TRUNC;
53
54 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
55 f->fd = open(f->file_name, flags, 0644);
56 if (f->fd < 0) {
57 td_verror(td, errno, "open");
58 return 1;
59 }
60
61 if (!new_layout)
62 goto done;
63
64 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
65 f->real_file_size);
66 if (ftruncate(f->fd, f->real_file_size) == -1) {
67 td_verror(td, errno, "ftruncate");
68 goto err;
69 }
70
71#ifdef FIO_HAVE_FALLOCATE
72 dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
73 f->real_file_size);
74 r = posix_fallocate(f->fd, 0, f->real_file_size);
75 if (r < 0)
76 log_err("fio: posix_fallocate fails: %s\n", strerror(-r));
77#endif
78
79 b = malloc(td->o.max_bs[DDIR_WRITE]);
80 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
81
82 left = f->real_file_size;
83 while (left && !td->terminate) {
84 bs = td->o.max_bs[DDIR_WRITE];
85 if (bs > left)
86 bs = left;
87
88 r = write(f->fd, b, bs);
89
90 if (r == (int) bs) {
91 left -= bs;
92 continue;
93 } else {
94 if (r < 0)
95 td_verror(td, errno, "write");
96 else
97 td_verror(td, EIO, "write");
98
99 break;
100 }
101 }
102
103 if (td->terminate) {
104 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
105 unlink(f->file_name);
106 } else if (td->o.create_fsync) {
107 if (fsync(f->fd) < 0) {
108 td_verror(td, errno, "fsync");
109 goto err;
110 }
111 }
112
113 free(b);
114done:
115 return 0;
116err:
117 close(f->fd);
118 f->fd = -1;
119 return 1;
120}
121
122static int pre_read_file(struct thread_data *td, struct fio_file *f)
123{
124 int r, did_open = 0, old_runstate;
125 unsigned long long left;
126 unsigned int bs;
127 char *b;
128
129 if (!(f->flags & FIO_FILE_OPEN)) {
130 if (td->io_ops->open_file(td, f)) {
131 log_err("fio: cannot pre-read, failed to open file\n");
132 return 1;
133 }
134 did_open = 1;
135 }
136
137 old_runstate = td->runstate;
138 td_set_runstate(td, TD_PRE_READING);
139
140 bs = td->o.max_bs[DDIR_READ];
141 b = malloc(bs);
142 memset(b, 0, bs);
143
144 lseek(f->fd, f->file_offset, SEEK_SET);
145 left = f->io_size;
146
147 while (left && !td->terminate) {
148 if (bs > left)
149 bs = left;
150
151 r = read(f->fd, b, bs);
152
153 if (r == (int) bs) {
154 left -= bs;
155 continue;
156 } else {
157 td_verror(td, EIO, "pre_read");
158 break;
159 }
160 }
161
162 td_set_runstate(td, old_runstate);
163
164 if (did_open)
165 td->io_ops->close_file(td, f);
166 free(b);
167 return 0;
168}
169
170static unsigned long long get_rand_file_size(struct thread_data *td)
171{
172 unsigned long long ret, sized;
173 long r;
174
175 r = os_random_long(&td->file_size_state);
176 sized = td->o.file_size_high - td->o.file_size_low;
177 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
178 ret += td->o.file_size_low;
179 ret -= (ret % td->o.rw_min_bs);
180 return ret;
181}
182
183static int file_size(struct thread_data *td, struct fio_file *f)
184{
185 struct stat st;
186
187 if (stat(f->file_name, &st) == -1) {
188 td_verror(td, errno, "fstat");
189 return 1;
190 }
191
192 f->real_file_size = st.st_size;
193 return 0;
194}
195
196static int bdev_size(struct thread_data *td, struct fio_file *f)
197{
198 unsigned long long bytes;
199 int r;
200
201 if (td->io_ops->open_file(td, f)) {
202 log_err("fio: failed opening blockdev %s for size check\n",
203 f->file_name);
204 return 1;
205 }
206
207 r = blockdev_size(f->fd, &bytes);
208 if (r) {
209 td_verror(td, r, "blockdev_size");
210 goto err;
211 }
212
213 if (!bytes) {
214 log_err("%s: zero sized block device?\n", f->file_name);
215 goto err;
216 }
217
218 f->real_file_size = bytes;
219 return 0;
220err:
221 td->io_ops->close_file(td, f);
222 return 1;
223}
224
225static int get_file_size(struct thread_data *td, struct fio_file *f)
226{
227 int ret = 0;
228
229 if (f->flags & FIO_SIZE_KNOWN)
230 return 0;
231
232 if (f->filetype == FIO_TYPE_FILE)
233 ret = file_size(td, f);
234 else if (f->filetype == FIO_TYPE_BD)
235 ret = bdev_size(td, f);
236 else
237 f->real_file_size = -1;
238
239 if (ret)
240 return ret;
241
242 if (f->file_offset > f->real_file_size) {
243 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
244 f->file_offset, f->real_file_size);
245 return 1;
246 }
247
248 f->flags |= FIO_SIZE_KNOWN;
249 return 0;
250}
251
252static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
253 unsigned long long off,
254 unsigned long long len)
255{
256 int ret = 0;
257
258 if (len == -1ULL) {
259 len = f->io_size;
260 if (len == -1ULL && td->o.fill_device)
261 return 0;
262 }
263 if (off == -1ULL)
264 off = f->file_offset;
265
266 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
267 len);
268
269 /*
270 * FIXME: add blockdev flushing too
271 */
272 if (f->mmap)
273 ret = madvise(f->mmap, len, MADV_DONTNEED);
274 else if (f->filetype == FIO_TYPE_FILE) {
275 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
276 } else if (f->filetype == FIO_TYPE_BD) {
277 ret = blockdev_invalidate_cache(f->fd);
278 if (ret < 0 && errno == EACCES && geteuid()) {
279 if (!root_warn) {
280 log_err("fio: only root may flush block "
281 "devices. Cache flush bypassed!\n");
282 root_warn = 1;
283 }
284 ret = 0;
285 }
286 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
287 ret = 0;
288
289 if (ret < 0) {
290 td_verror(td, errno, "invalidate_cache");
291 return 1;
292 } else if (ret > 0) {
293 td_verror(td, ret, "invalidate_cache");
294 return 1;
295 }
296
297 return ret;
298
299}
300
301int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
302{
303 if (!(f->flags & FIO_FILE_OPEN))
304 return 0;
305
306 return __file_invalidate_cache(td, f, -1, -1);
307}
308
309int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
310{
311 int ret = 0;
312
313 dprint(FD_FILE, "fd close %s\n", f->file_name);
314
315 remove_file_hash(f);
316
317 if (close(f->fd) < 0)
318 ret = errno;
319
320 f->fd = -1;
321 return ret;
322}
323
324static int file_lookup_open(struct fio_file *f, int flags)
325{
326 struct fio_file *__f;
327 int from_hash;
328
329 __f = lookup_file_hash(f->file_name);
330 if (__f) {
331 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
332 /*
333 * racy, need the __f->lock locked
334 */
335 f->lock = __f->lock;
336 f->lock_owner = __f->lock_owner;
337 f->lock_batch = __f->lock_batch;
338 f->lock_ddir = __f->lock_ddir;
339 from_hash = 1;
340 } else {
341 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
342 from_hash = 0;
343 }
344
345 f->fd = open(f->file_name, flags, 0600);
346 return from_hash;
347}
348
349int generic_open_file(struct thread_data *td, struct fio_file *f)
350{
351 int is_std = 0;
352 int flags = 0;
353 int from_hash = 0;
354
355 dprint(FD_FILE, "fd open %s\n", f->file_name);
356
357 if (!strcmp(f->file_name, "-")) {
358 if (td_rw(td)) {
359 log_err("fio: can't read/write to stdin/out\n");
360 return 1;
361 }
362 is_std = 1;
363
364 /*
365 * move output logging to stderr, if we are writing to stdout
366 */
367 if (td_write(td))
368 f_out = stderr;
369 }
370
371 if (td->o.odirect)
372 flags |= OS_O_DIRECT;
373 if (td->o.sync_io)
374 flags |= O_SYNC;
375 if (f->filetype != FIO_TYPE_FILE)
376 flags |= FIO_O_NOATIME;
377 if (td->o.create_on_open)
378 flags |= O_CREAT;
379
380open_again:
381 if (td_write(td)) {
382 if (!read_only)
383 flags |= O_RDWR;
384
385 if (f->filetype == FIO_TYPE_FILE)
386 flags |= O_CREAT;
387
388 if (is_std)
389 f->fd = dup(STDOUT_FILENO);
390 else
391 from_hash = file_lookup_open(f, flags);
392 } else {
393 if (f->filetype == FIO_TYPE_CHAR && !read_only)
394 flags |= O_RDWR;
395 else
396 flags |= O_RDONLY;
397
398 if (is_std)
399 f->fd = dup(STDIN_FILENO);
400 else
401 from_hash = file_lookup_open(f, flags);
402 }
403
404 if (f->fd == -1) {
405 char buf[FIO_VERROR_SIZE];
406 int __e = errno;
407
408 if (errno == EPERM && (flags & FIO_O_NOATIME)) {
409 flags &= ~FIO_O_NOATIME;
410 goto open_again;
411 }
412
413 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
414
415 td_verror(td, __e, buf);
416 }
417
418 if (!from_hash && f->fd != -1) {
419 if (add_file_hash(f)) {
420 int ret;
421
422 /*
423 * OK to ignore, we haven't done anything with it
424 */
425 ret = generic_close_file(td, f);
426 goto open_again;
427 }
428 }
429
430 return 0;
431}
432
433int generic_get_file_size(struct thread_data *td, struct fio_file *f)
434{
435 return get_file_size(td, f);
436}
437
438/*
439 * open/close all files, so that ->real_file_size gets set
440 */
441static int get_file_sizes(struct thread_data *td)
442{
443 struct fio_file *f;
444 unsigned int i;
445 int err = 0;
446
447 for_each_file(td, f, i) {
448 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
449 f->file_name);
450
451 if (td_io_get_file_size(td, f)) {
452 if (td->error != ENOENT) {
453 log_err("%s\n", td->verror);
454 err = 1;
455 }
456 clear_error(td);
457 }
458
459 if (f->real_file_size == -1ULL && td->o.size)
460 f->real_file_size = td->o.size / td->o.nr_files;
461 }
462
463 return err;
464}
465
466/*
467 * Open the files and setup files sizes, creating files if necessary.
468 */
469int setup_files(struct thread_data *td)
470{
471 unsigned long long total_size, extend_size;
472 struct fio_file *f;
473 unsigned int i;
474 int err = 0, need_extend;
475
476 dprint(FD_FILE, "setup files\n");
477
478 if (td->o.read_iolog_file)
479 return 0;
480
481 /*
482 * if ioengine defines a setup() method, it's responsible for
483 * opening the files and setting f->real_file_size to indicate
484 * the valid range for that file.
485 */
486 if (td->io_ops->setup)
487 err = td->io_ops->setup(td);
488 else
489 err = get_file_sizes(td);
490
491 if (err)
492 return err;
493
494 /*
495 * check sizes. if the files/devices do not exist and the size
496 * isn't passed to fio, abort.
497 */
498 total_size = 0;
499 for_each_file(td, f, i) {
500 if (f->real_file_size == -1ULL)
501 total_size = -1ULL;
502 else
503 total_size += f->real_file_size;
504 }
505
506 /*
507 * device/file sizes are zero and no size given, punt
508 */
509 if ((!total_size || total_size == -1ULL) && !td->o.size &&
510 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
511 log_err("%s: you need to specify size=\n", td->o.name);
512 td_verror(td, EINVAL, "total_file_size");
513 return 1;
514 }
515
516 /*
517 * now file sizes are known, so we can set ->io_size. if size= is
518 * not given, ->io_size is just equal to ->real_file_size. if size
519 * is given, ->io_size is size / nr_files.
520 */
521 extend_size = total_size = 0;
522 need_extend = 0;
523 for_each_file(td, f, i) {
524 f->file_offset = td->o.start_offset;
525
526 if (!td->o.file_size_low) {
527 /*
528 * no file size range given, file size is equal to
529 * total size divided by number of files. if that is
530 * zero, set it to the real file size.
531 */
532 f->io_size = td->o.size / td->o.nr_files;
533 if (!f->io_size)
534 f->io_size = f->real_file_size - f->file_offset;
535 } else if (f->real_file_size < td->o.file_size_low ||
536 f->real_file_size > td->o.file_size_high) {
537 if (f->file_offset > td->o.file_size_low)
538 goto err_offset;
539 /*
540 * file size given. if it's fixed, use that. if it's a
541 * range, generate a random size in-between.
542 */
543 if (td->o.file_size_low == td->o.file_size_high) {
544 f->io_size = td->o.file_size_low
545 - f->file_offset;
546 } else {
547 f->io_size = get_rand_file_size(td)
548 - f->file_offset;
549 }
550 } else
551 f->io_size = f->real_file_size - f->file_offset;
552
553 if (f->io_size == -1ULL)
554 total_size = -1ULL;
555 else
556 total_size += f->io_size;
557
558 if (f->filetype == FIO_TYPE_FILE &&
559 (f->io_size + f->file_offset) > f->real_file_size &&
560 !(td->io_ops->flags & FIO_DISKLESSIO)) {
561 if (!td->o.create_on_open) {
562 need_extend++;
563 extend_size += (f->io_size + f->file_offset);
564 } else
565 f->real_file_size = f->io_size + f->file_offset;
566 f->flags |= FIO_FILE_EXTEND;
567 }
568 }
569
570 if (!td->o.size || td->o.size > total_size)
571 td->o.size = total_size;
572
573 /*
574 * See if we need to extend some files
575 */
576 if (need_extend) {
577 temp_stall_ts = 1;
578 if (!terse_output)
579 log_info("%s: Laying out IO file(s) (%u file(s) /"
580 " %LuMiB)\n", td->o.name, need_extend,
581 extend_size >> 20);
582
583 for_each_file(td, f, i) {
584 unsigned long long old_len, extend_len;
585
586 if (!(f->flags & FIO_FILE_EXTEND))
587 continue;
588
589 assert(f->filetype == FIO_TYPE_FILE);
590 f->flags &= ~FIO_FILE_EXTEND;
591 old_len = f->real_file_size;
592 extend_len = f->io_size + f->file_offset - old_len;
593 f->real_file_size = (f->io_size + f->file_offset);
594 err = extend_file(td, f);
595 if (err)
596 break;
597
598 err = __file_invalidate_cache(td, f, old_len,
599 extend_len);
600 close(f->fd);
601 f->fd = -1;
602 if (err)
603 break;
604 }
605 temp_stall_ts = 0;
606 }
607
608 if (err)
609 return err;
610
611 if (!td->o.zone_size)
612 td->o.zone_size = td->o.size;
613
614 /*
615 * iolog already set the total io size, if we read back
616 * stored entries.
617 */
618 if (!td->o.read_iolog_file)
619 td->total_io_size = td->o.size * td->o.loops;
620 return 0;
621err_offset:
622 log_err("%s: you need to specify valid offset=\n", td->o.name);
623 return 1;
624}
625
626int pre_read_files(struct thread_data *td)
627{
628 struct fio_file *f;
629 unsigned int i;
630
631 dprint(FD_FILE, "pre_read files\n");
632
633 for_each_file(td, f, i) {
634 pre_read_file(td, f);
635 }
636
637 return 1;
638}
639
640int init_random_map(struct thread_data *td)
641{
642 unsigned long long blocks, num_maps;
643 struct fio_file *f;
644 unsigned int i;
645
646 if (td->o.norandommap || !td_random(td))
647 return 0;
648
649 for_each_file(td, f, i) {
650 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
651 (unsigned long long) td->o.rw_min_bs;
652 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
653 (unsigned long long) BLOCKS_PER_MAP;
654 f->file_map = smalloc(num_maps * sizeof(int));
655 if (f->file_map) {
656 f->num_maps = num_maps;
657 continue;
658 }
659 if (!td->o.softrandommap) {
660 log_err("fio: failed allocating random map. If running"
661 " a large number of jobs, try the 'norandommap'"
662 " option or set 'softrandommap'. Or give"
663 " a larger --alloc-size to fio.\n");
664 return 1;
665 }
666
667 log_info("fio: file %s failed allocating random map. Running "
668 "job without.\n", f->file_name);
669 f->num_maps = 0;
670 }
671
672 return 0;
673}
674
675void close_files(struct thread_data *td)
676{
677 struct fio_file *f;
678 unsigned int i;
679
680 for_each_file(td, f, i)
681 td_io_close_file(td, f);
682}
683
684void close_and_free_files(struct thread_data *td)
685{
686 struct fio_file *f;
687 unsigned int i;
688
689 dprint(FD_FILE, "close files\n");
690
691 for_each_file(td, f, i) {
692 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
693 dprint(FD_FILE, "free unlink %s\n", f->file_name);
694 unlink(f->file_name);
695 }
696
697 td_io_close_file(td, f);
698 remove_file_hash(f);
699
700 sfree(f->file_name);
701 f->file_name = NULL;
702
703 if (f->file_map) {
704 sfree(f->file_map);
705 f->file_map = NULL;
706 }
707 sfree(f);
708 }
709
710 td->o.filename = NULL;
711 free(td->files);
712 td->files_index = 0;
713 td->files = NULL;
714 td->o.nr_files = 0;
715}
716
717static void get_file_type(struct fio_file *f)
718{
719 struct stat sb;
720
721 if (!strcmp(f->file_name, "-"))
722 f->filetype = FIO_TYPE_PIPE;
723 else
724 f->filetype = FIO_TYPE_FILE;
725
726 if (!lstat(f->file_name, &sb)) {
727 if (S_ISBLK(sb.st_mode))
728 f->filetype = FIO_TYPE_BD;
729 else if (S_ISCHR(sb.st_mode))
730 f->filetype = FIO_TYPE_CHAR;
731 else if (S_ISFIFO(sb.st_mode))
732 f->filetype = FIO_TYPE_PIPE;
733 }
734}
735
736int add_file(struct thread_data *td, const char *fname)
737{
738 int cur_files = td->files_index;
739 char file_name[PATH_MAX];
740 struct fio_file *f;
741 int len = 0;
742
743 dprint(FD_FILE, "add file %s\n", fname);
744
745 f = smalloc(sizeof(*f));
746 if (!f) {
747 log_err("fio: smalloc OOM\n");
748 assert(0);
749 }
750
751 f->fd = -1;
752
753 if (td->files_size <= td->files_index) {
754 int new_size = td->o.nr_files + 1;
755
756 dprint(FD_FILE, "resize file array to %d files\n", new_size);
757
758 td->files = realloc(td->files, new_size * sizeof(f));
759 td->files_size = new_size;
760 }
761 td->files[cur_files] = f;
762
763 /*
764 * init function, io engine may not be loaded yet
765 */
766 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
767 f->real_file_size = -1ULL;
768
769 if (td->o.directory)
770 len = sprintf(file_name, "%s/", td->o.directory);
771
772 sprintf(file_name + len, "%s", fname);
773 f->file_name = smalloc_strdup(file_name);
774 if (!f->file_name) {
775 log_err("fio: smalloc OOM\n");
776 assert(0);
777 }
778
779 get_file_type(f);
780
781 switch (td->o.file_lock_mode) {
782 case FILE_LOCK_NONE:
783 break;
784 case FILE_LOCK_READWRITE:
785 f->lock = fio_mutex_rw_init();
786 break;
787 case FILE_LOCK_EXCLUSIVE:
788 f->lock = fio_mutex_init(1);
789 break;
790 default:
791 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
792 assert(0);
793 }
794
795 td->files_index++;
796 if (f->filetype == FIO_TYPE_FILE)
797 td->nr_normal_files++;
798
799 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
800 cur_files);
801
802 return cur_files;
803}
804
805void get_file(struct fio_file *f)
806{
807 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
808 assert(f->flags & FIO_FILE_OPEN);
809 f->references++;
810}
811
812int put_file(struct thread_data *td, struct fio_file *f)
813{
814 int f_ret = 0, ret = 0;
815
816 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
817
818 if (!(f->flags & FIO_FILE_OPEN))
819 return 0;
820
821 assert(f->references);
822 if (--f->references)
823 return 0;
824
825 if (should_fsync(td) && td->o.fsync_on_close)
826 f_ret = fsync(f->fd);
827
828 if (td->io_ops->close_file)
829 ret = td->io_ops->close_file(td, f);
830
831 if (!ret)
832 ret = f_ret;
833
834 td->nr_open_files--;
835 f->flags &= ~FIO_FILE_OPEN;
836 return ret;
837}
838
839void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
840{
841 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
842 return;
843
844 if (f->lock_owner == td && f->lock_batch--)
845 return;
846
847 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
848 if (ddir == DDIR_READ)
849 fio_mutex_down_read(f->lock);
850 else
851 fio_mutex_down_write(f->lock);
852 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
853 fio_mutex_down(f->lock);
854
855 f->lock_owner = td;
856 f->lock_batch = td->o.lockfile_batch;
857 f->lock_ddir = ddir;
858}
859
860void unlock_file(struct thread_data *td, struct fio_file *f)
861{
862 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
863 return;
864 if (f->lock_batch)
865 return;
866
867 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
868 const int is_read = f->lock_ddir == DDIR_READ;
869 int val = fio_mutex_getval(f->lock);
870
871 if ((is_read && val == 1) || (!is_read && val == -1))
872 f->lock_owner = NULL;
873
874 if (is_read)
875 fio_mutex_up_read(f->lock);
876 else
877 fio_mutex_up_write(f->lock);
878 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
879 int val = fio_mutex_getval(f->lock);
880
881 if (val == 0)
882 f->lock_owner = NULL;
883
884 fio_mutex_up(f->lock);
885 }
886}
887
888void unlock_file_all(struct thread_data *td, struct fio_file *f)
889{
890 if (f->lock_owner != td)
891 return;
892
893 f->lock_batch = 0;
894 unlock_file(td, f);
895}
896
897static int recurse_dir(struct thread_data *td, const char *dirname)
898{
899 struct dirent *dir;
900 int ret = 0;
901 DIR *D;
902
903 D = opendir(dirname);
904 if (!D) {
905 char buf[FIO_VERROR_SIZE];
906
907 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
908 td_verror(td, errno, buf);
909 return 1;
910 }
911
912 while ((dir = readdir(D)) != NULL) {
913 char full_path[PATH_MAX];
914 struct stat sb;
915
916 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
917 continue;
918
919 sprintf(full_path, "%s/%s", dirname, dir->d_name);
920
921 if (lstat(full_path, &sb) == -1) {
922 if (errno != ENOENT) {
923 td_verror(td, errno, "stat");
924 return 1;
925 }
926 }
927
928 if (S_ISREG(sb.st_mode)) {
929 add_file(td, full_path);
930 td->o.nr_files++;
931 continue;
932 }
933 if (!S_ISDIR(sb.st_mode))
934 continue;
935
936 ret = recurse_dir(td, full_path);
937 if (ret)
938 break;
939 }
940
941 closedir(D);
942 return ret;
943}
944
945int add_dir_files(struct thread_data *td, const char *path)
946{
947 int ret = recurse_dir(td, path);
948
949 if (!ret)
950 log_info("fio: opendir added %d files\n", td->o.nr_files);
951
952 return ret;
953}
954
955void dup_files(struct thread_data *td, struct thread_data *org)
956{
957 struct fio_file *f;
958 unsigned int i;
959
960 dprint(FD_FILE, "dup files: %d\n", org->files_index);
961
962 if (!org->files)
963 return;
964
965 td->files = malloc(org->files_index * sizeof(f));
966
967 for_each_file(org, f, i) {
968 struct fio_file *__f;
969
970 __f = smalloc(sizeof(*__f));
971 if (!__f) {
972 log_err("fio: smalloc OOM\n");
973 assert(0);
974 }
975
976 if (f->file_name) {
977 __f->file_name = smalloc_strdup(f->file_name);
978 if (!__f->file_name) {
979 log_err("fio: smalloc OOM\n");
980 assert(0);
981 }
982
983 __f->filetype = f->filetype;
984 }
985
986 td->files[i] = __f;
987 }
988}
989
990/*
991 * Returns the index that matches the filename, or -1 if not there
992 */
993int get_fileno(struct thread_data *td, const char *fname)
994{
995 struct fio_file *f;
996 unsigned int i;
997
998 for_each_file(td, f, i)
999 if (!strcmp(f->file_name, fname))
1000 return i;
1001
1002 return -1;
1003}
1004
1005/*
1006 * For log usage, where we add/open/close files automatically
1007 */
1008void free_release_files(struct thread_data *td)
1009{
1010 close_files(td);
1011 td->files_index = 0;
1012 td->nr_normal_files = 0;
1013}
fio - Flexible IO Tester