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[fio.git] / filesetup.c
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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
16static inline void clear_error(struct thread_data *td)
17{
18 td->error = 0;
19 td->verror[0] = '\0';
20}
21
22/*
23 * Leaves f->fd open on success, caller must close
24 */
25static int extend_file(struct thread_data *td, struct fio_file *f)
26{
27 int r, new_layout = 0, unlink_file = 0, flags;
28 unsigned long long left;
29 unsigned int bs;
30 char *b;
31
32 if (read_only) {
33 log_err("fio: refusing extend of file due to read-only\n");
34 return 0;
35 }
36
37 /*
38 * check if we need to lay the file out complete again. fio
39 * does that for operations involving reads, or for writes
40 * where overwrite is set
41 */
42 if (td_read(td) || (td_write(td) && td->o.overwrite) ||
43 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
44 new_layout = 1;
45 if (td_write(td) && !td->o.overwrite)
46 unlink_file = 1;
47
48 if (unlink_file || new_layout) {
49 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
50 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
51 td_verror(td, errno, "unlink");
52 return 1;
53 }
54 }
55
56 flags = O_WRONLY | O_CREAT;
57 if (new_layout)
58 flags |= O_TRUNC;
59
60 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
61 f->fd = open(f->file_name, flags, 0644);
62 if (f->fd < 0) {
63 td_verror(td, errno, "open");
64 return 1;
65 }
66
67 if (!new_layout)
68 goto done;
69
70 /*
71 * The size will be -1ULL when fill_device is used, so don't truncate
72 * or fallocate this file, just write it
73 */
74 if (!td->o.fill_device) {
75 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
76 f->real_file_size);
77 if (ftruncate(f->fd, f->real_file_size) == -1) {
78 td_verror(td, errno, "ftruncate");
79 goto err;
80 }
81
82#ifdef FIO_HAVE_FALLOCATE
83 dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
84 f->real_file_size);
85 r = posix_fallocate(f->fd, 0, f->real_file_size);
86 if (r < 0) {
87 log_err("fio: posix_fallocate fails: %s\n",
88 strerror(-r));
89 }
90#endif
91 }
92
93 b = malloc(td->o.max_bs[DDIR_WRITE]);
94 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
95
96 left = f->real_file_size;
97 while (left && !td->terminate) {
98 bs = td->o.max_bs[DDIR_WRITE];
99 if (bs > left)
100 bs = left;
101
102 r = write(f->fd, b, bs);
103
104 if (r > 0) {
105 left -= r;
106 continue;
107 } else {
108 if (r < 0) {
109 int __e = errno;
110
111 if (__e == ENOSPC) {
112 if (td->o.fill_device)
113 break;
114 log_info("fio: ENOSPC on laying out "
115 "file, stopping\n");
116 break;
117 }
118 td_verror(td, errno, "write");
119 } else
120 td_verror(td, EIO, "write");
121
122 break;
123 }
124 }
125
126 if (td->terminate) {
127 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
128 unlink(f->file_name);
129 } else if (td->o.create_fsync) {
130 if (fsync(f->fd) < 0) {
131 td_verror(td, errno, "fsync");
132 goto err;
133 }
134 }
135 if (td->o.fill_device) {
136 fio_file_clear_size_known(f);
137 if (td_io_get_file_size(td, f))
138 goto err;
139 if (f->io_size > f->real_file_size)
140 f->io_size = f->real_file_size;
141 }
142
143 free(b);
144done:
145 return 0;
146err:
147 close(f->fd);
148 f->fd = -1;
149 return 1;
150}
151
152static int pre_read_file(struct thread_data *td, struct fio_file *f)
153{
154 int r, did_open = 0, old_runstate;
155 unsigned long long left;
156 unsigned int bs;
157 char *b;
158
159 if (!fio_file_open(f)) {
160 if (td->io_ops->open_file(td, f)) {
161 log_err("fio: cannot pre-read, failed to open file\n");
162 return 1;
163 }
164 did_open = 1;
165 }
166
167 old_runstate = td->runstate;
168 td_set_runstate(td, TD_PRE_READING);
169
170 bs = td->o.max_bs[DDIR_READ];
171 b = malloc(bs);
172 memset(b, 0, bs);
173
174 lseek(f->fd, f->file_offset, SEEK_SET);
175 left = f->io_size;
176
177 while (left && !td->terminate) {
178 if (bs > left)
179 bs = left;
180
181 r = read(f->fd, b, bs);
182
183 if (r == (int) bs) {
184 left -= bs;
185 continue;
186 } else {
187 td_verror(td, EIO, "pre_read");
188 break;
189 }
190 }
191
192 td_set_runstate(td, old_runstate);
193
194 if (did_open)
195 td->io_ops->close_file(td, f);
196 free(b);
197 return 0;
198}
199
200static unsigned long long get_rand_file_size(struct thread_data *td)
201{
202 unsigned long long ret, sized;
203 long r;
204
205 r = os_random_long(&td->file_size_state);
206 sized = td->o.file_size_high - td->o.file_size_low;
207 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
208 ret += td->o.file_size_low;
209 ret -= (ret % td->o.rw_min_bs);
210 return ret;
211}
212
213static int file_size(struct thread_data *td, struct fio_file *f)
214{
215 struct stat st;
216
217 if (stat(f->file_name, &st) == -1) {
218 td_verror(td, errno, "fstat");
219 return 1;
220 }
221
222 f->real_file_size = st.st_size;
223 return 0;
224}
225
226static int bdev_size(struct thread_data *td, struct fio_file *f)
227{
228 unsigned long long bytes;
229 int r;
230
231 if (td->io_ops->open_file(td, f)) {
232 log_err("fio: failed opening blockdev %s for size check\n",
233 f->file_name);
234 return 1;
235 }
236
237 r = blockdev_size(f->fd, &bytes);
238 if (r) {
239 td_verror(td, r, "blockdev_size");
240 goto err;
241 }
242
243 if (!bytes) {
244 log_err("%s: zero sized block device?\n", f->file_name);
245 goto err;
246 }
247
248 f->real_file_size = bytes;
249 return 0;
250err:
251 td->io_ops->close_file(td, f);
252 return 1;
253}
254
255static int get_file_size(struct thread_data *td, struct fio_file *f)
256{
257 int ret = 0;
258
259 if (fio_file_size_known(f))
260 return 0;
261
262 if (f->filetype == FIO_TYPE_FILE)
263 ret = file_size(td, f);
264 else if (f->filetype == FIO_TYPE_BD)
265 ret = bdev_size(td, f);
266 else
267 f->real_file_size = -1;
268
269 if (ret)
270 return ret;
271
272 if (f->file_offset > f->real_file_size) {
273 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
274 f->file_offset, f->real_file_size);
275 return 1;
276 }
277
278 fio_file_set_size_known(f);
279 return 0;
280}
281
282static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
283 unsigned long long off,
284 unsigned long long len)
285{
286 int ret = 0;
287
288 if (len == -1ULL)
289 len = f->io_size;
290 if (off == -1ULL)
291 off = f->file_offset;
292
293 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
294 len);
295
296 /*
297 * FIXME: add blockdev flushing too
298 */
299 if (f->mmap_ptr)
300 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
301 else if (f->filetype == FIO_TYPE_FILE) {
302 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
303 } else if (f->filetype == FIO_TYPE_BD) {
304 ret = blockdev_invalidate_cache(f->fd);
305 if (ret < 0 && errno == EACCES && geteuid()) {
306 if (!root_warn) {
307 log_err("fio: only root may flush block "
308 "devices. Cache flush bypassed!\n");
309 root_warn = 1;
310 }
311 ret = 0;
312 }
313 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
314 ret = 0;
315
316 if (ret < 0) {
317 td_verror(td, errno, "invalidate_cache");
318 return 1;
319 } else if (ret > 0) {
320 td_verror(td, ret, "invalidate_cache");
321 return 1;
322 }
323
324 return ret;
325
326}
327
328int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
329{
330 if (!fio_file_open(f))
331 return 0;
332
333 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
334}
335
336int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
337{
338 int ret = 0;
339
340 dprint(FD_FILE, "fd close %s\n", f->file_name);
341
342 remove_file_hash(f);
343
344 if (close(f->fd) < 0)
345 ret = errno;
346
347 f->fd = -1;
348 return ret;
349}
350
351static int file_lookup_open(struct fio_file *f, int flags)
352{
353 struct fio_file *__f;
354 int from_hash;
355
356 __f = lookup_file_hash(f->file_name);
357 if (__f) {
358 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
359 /*
360 * racy, need the __f->lock locked
361 */
362 f->lock = __f->lock;
363 f->lock_owner = __f->lock_owner;
364 f->lock_batch = __f->lock_batch;
365 f->lock_ddir = __f->lock_ddir;
366 from_hash = 1;
367 } else {
368 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
369 from_hash = 0;
370 }
371
372 f->fd = open(f->file_name, flags, 0600);
373 return from_hash;
374}
375
376int generic_open_file(struct thread_data *td, struct fio_file *f)
377{
378 int is_std = 0;
379 int flags = 0;
380 int from_hash = 0;
381
382 dprint(FD_FILE, "fd open %s\n", f->file_name);
383
384 if (!strcmp(f->file_name, "-")) {
385 if (td_rw(td)) {
386 log_err("fio: can't read/write to stdin/out\n");
387 return 1;
388 }
389 is_std = 1;
390
391 /*
392 * move output logging to stderr, if we are writing to stdout
393 */
394 if (td_write(td))
395 f_out = stderr;
396 }
397
398 if (td->o.odirect)
399 flags |= OS_O_DIRECT;
400 if (td->o.sync_io)
401 flags |= O_SYNC;
402 if (f->filetype != FIO_TYPE_FILE)
403 flags |= FIO_O_NOATIME;
404 if (td->o.create_on_open)
405 flags |= O_CREAT;
406
407open_again:
408 if (td_write(td)) {
409 if (!read_only)
410 flags |= O_RDWR;
411
412 if (f->filetype == FIO_TYPE_FILE)
413 flags |= O_CREAT;
414
415 if (is_std)
416 f->fd = dup(STDOUT_FILENO);
417 else
418 from_hash = file_lookup_open(f, flags);
419 } else {
420 if (f->filetype == FIO_TYPE_CHAR && !read_only)
421 flags |= O_RDWR;
422 else
423 flags |= O_RDONLY;
424
425 if (is_std)
426 f->fd = dup(STDIN_FILENO);
427 else
428 from_hash = file_lookup_open(f, flags);
429 }
430
431 if (f->fd == -1) {
432 char buf[FIO_VERROR_SIZE];
433 int __e = errno;
434
435 if (errno == EPERM && (flags & FIO_O_NOATIME)) {
436 flags &= ~FIO_O_NOATIME;
437 goto open_again;
438 }
439
440 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
441
442 td_verror(td, __e, buf);
443 }
444
445 if (!from_hash && f->fd != -1) {
446 if (add_file_hash(f)) {
447 int ret;
448
449 /*
450 * OK to ignore, we haven't done anything with it
451 */
452 ret = generic_close_file(td, f);
453 goto open_again;
454 }
455 }
456
457 return 0;
458}
459
460int generic_get_file_size(struct thread_data *td, struct fio_file *f)
461{
462 return get_file_size(td, f);
463}
464
465/*
466 * open/close all files, so that ->real_file_size gets set
467 */
468static int get_file_sizes(struct thread_data *td)
469{
470 struct fio_file *f;
471 unsigned int i;
472 int err = 0;
473
474 for_each_file(td, f, i) {
475 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
476 f->file_name);
477
478 if (td_io_get_file_size(td, f)) {
479 if (td->error != ENOENT) {
480 log_err("%s\n", td->verror);
481 err = 1;
482 }
483 clear_error(td);
484 }
485
486 if (f->real_file_size == -1ULL && td->o.size)
487 f->real_file_size = td->o.size / td->o.nr_files;
488 }
489
490 return err;
491}
492
493/*
494 * Open the files and setup files sizes, creating files if necessary.
495 */
496int setup_files(struct thread_data *td)
497{
498 unsigned long long total_size, extend_size;
499 struct fio_file *f;
500 unsigned int i;
501 int err = 0, need_extend;
502
503 dprint(FD_FILE, "setup files\n");
504
505 if (td->o.read_iolog_file)
506 return 0;
507
508 /*
509 * if ioengine defines a setup() method, it's responsible for
510 * opening the files and setting f->real_file_size to indicate
511 * the valid range for that file.
512 */
513 if (td->io_ops->setup)
514 err = td->io_ops->setup(td);
515 else
516 err = get_file_sizes(td);
517
518 if (err)
519 return err;
520
521 /*
522 * check sizes. if the files/devices do not exist and the size
523 * isn't passed to fio, abort.
524 */
525 total_size = 0;
526 for_each_file(td, f, i) {
527 if (f->real_file_size == -1ULL)
528 total_size = -1ULL;
529 else
530 total_size += f->real_file_size;
531 }
532
533 /*
534 * device/file sizes are zero and no size given, punt
535 */
536 if ((!total_size || total_size == -1ULL) && !td->o.size &&
537 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
538 log_err("%s: you need to specify size=\n", td->o.name);
539 td_verror(td, EINVAL, "total_file_size");
540 return 1;
541 }
542
543 /*
544 * now file sizes are known, so we can set ->io_size. if size= is
545 * not given, ->io_size is just equal to ->real_file_size. if size
546 * is given, ->io_size is size / nr_files.
547 */
548 extend_size = total_size = 0;
549 need_extend = 0;
550 for_each_file(td, f, i) {
551 f->file_offset = td->o.start_offset;
552
553 if (!td->o.file_size_low) {
554 /*
555 * no file size range given, file size is equal to
556 * total size divided by number of files. if that is
557 * zero, set it to the real file size.
558 */
559 f->io_size = td->o.size / td->o.nr_files;
560 if (!f->io_size)
561 f->io_size = f->real_file_size - f->file_offset;
562 } else if (f->real_file_size < td->o.file_size_low ||
563 f->real_file_size > td->o.file_size_high) {
564 if (f->file_offset > td->o.file_size_low)
565 goto err_offset;
566 /*
567 * file size given. if it's fixed, use that. if it's a
568 * range, generate a random size in-between.
569 */
570 if (td->o.file_size_low == td->o.file_size_high) {
571 f->io_size = td->o.file_size_low
572 - f->file_offset;
573 } else {
574 f->io_size = get_rand_file_size(td)
575 - f->file_offset;
576 }
577 } else
578 f->io_size = f->real_file_size - f->file_offset;
579
580 if (f->io_size == -1ULL)
581 total_size = -1ULL;
582 else
583 total_size += f->io_size;
584
585 if (f->filetype == FIO_TYPE_FILE &&
586 (f->io_size + f->file_offset) > f->real_file_size &&
587 !(td->io_ops->flags & FIO_DISKLESSIO)) {
588 if (!td->o.create_on_open) {
589 need_extend++;
590 extend_size += (f->io_size + f->file_offset);
591 } else
592 f->real_file_size = f->io_size + f->file_offset;
593 fio_file_set_extend(f);
594 }
595 }
596
597 if (!td->o.size || td->o.size > total_size)
598 td->o.size = total_size;
599
600 /*
601 * See if we need to extend some files
602 */
603 if (need_extend) {
604 temp_stall_ts = 1;
605 if (!terse_output)
606 log_info("%s: Laying out IO file(s) (%u file(s) /"
607 " %LuMiB)\n", td->o.name, need_extend,
608 extend_size >> 20);
609
610 for_each_file(td, f, i) {
611 unsigned long long old_len = -1ULL, extend_len = -1ULL;
612
613 if (!fio_file_extend(f))
614 continue;
615
616 assert(f->filetype == FIO_TYPE_FILE);
617 fio_file_clear_extend(f);
618 if (!td->o.fill_device) {
619 old_len = f->real_file_size;
620 extend_len = f->io_size + f->file_offset - old_len;
621 }
622 f->real_file_size = (f->io_size + f->file_offset);
623 err = extend_file(td, f);
624 if (err)
625 break;
626
627 err = __file_invalidate_cache(td, f, old_len,
628 extend_len);
629 close(f->fd);
630 f->fd = -1;
631 if (err)
632 break;
633 }
634 temp_stall_ts = 0;
635 }
636
637 if (err)
638 return err;
639
640 if (!td->o.zone_size)
641 td->o.zone_size = td->o.size;
642
643 /*
644 * iolog already set the total io size, if we read back
645 * stored entries.
646 */
647 if (!td->o.read_iolog_file)
648 td->total_io_size = td->o.size * td->o.loops;
649 return 0;
650err_offset:
651 log_err("%s: you need to specify valid offset=\n", td->o.name);
652 return 1;
653}
654
655int pre_read_files(struct thread_data *td)
656{
657 struct fio_file *f;
658 unsigned int i;
659
660 dprint(FD_FILE, "pre_read files\n");
661
662 for_each_file(td, f, i) {
663 pre_read_file(td, f);
664 }
665
666 return 1;
667}
668
669int init_random_map(struct thread_data *td)
670{
671 unsigned long long blocks, num_maps;
672 struct fio_file *f;
673 unsigned int i;
674
675 if (td->o.norandommap || !td_random(td))
676 return 0;
677
678 for_each_file(td, f, i) {
679 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
680 (unsigned long long) td->o.rw_min_bs;
681 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
682 (unsigned long long) BLOCKS_PER_MAP;
683 f->file_map = smalloc(num_maps * sizeof(int));
684 if (f->file_map) {
685 f->num_maps = num_maps;
686 continue;
687 }
688 if (!td->o.softrandommap) {
689 log_err("fio: failed allocating random map. If running"
690 " a large number of jobs, try the 'norandommap'"
691 " option or set 'softrandommap'. Or give"
692 " a larger --alloc-size to fio.\n");
693 return 1;
694 }
695
696 log_info("fio: file %s failed allocating random map. Running "
697 "job without.\n", f->file_name);
698 f->num_maps = 0;
699 }
700
701 return 0;
702}
703
704void close_files(struct thread_data *td)
705{
706 struct fio_file *f;
707 unsigned int i;
708
709 for_each_file(td, f, i)
710 td_io_close_file(td, f);
711}
712
713void close_and_free_files(struct thread_data *td)
714{
715 struct fio_file *f;
716 unsigned int i;
717
718 dprint(FD_FILE, "close files\n");
719
720 for_each_file(td, f, i) {
721 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
722 dprint(FD_FILE, "free unlink %s\n", f->file_name);
723 unlink(f->file_name);
724 }
725
726 td_io_close_file(td, f);
727 remove_file_hash(f);
728
729 sfree(f->file_name);
730 f->file_name = NULL;
731
732 if (f->file_map) {
733 sfree(f->file_map);
734 f->file_map = NULL;
735 }
736 sfree(f);
737 }
738
739 td->o.filename = NULL;
740 free(td->files);
741 td->files_index = 0;
742 td->files = NULL;
743 td->o.nr_files = 0;
744}
745
746static void get_file_type(struct fio_file *f)
747{
748 struct stat sb;
749
750 if (!strcmp(f->file_name, "-"))
751 f->filetype = FIO_TYPE_PIPE;
752 else
753 f->filetype = FIO_TYPE_FILE;
754
755 if (!lstat(f->file_name, &sb)) {
756 if (S_ISBLK(sb.st_mode))
757 f->filetype = FIO_TYPE_BD;
758 else if (S_ISCHR(sb.st_mode))
759 f->filetype = FIO_TYPE_CHAR;
760 else if (S_ISFIFO(sb.st_mode))
761 f->filetype = FIO_TYPE_PIPE;
762 }
763}
764
765int add_file(struct thread_data *td, const char *fname)
766{
767 int cur_files = td->files_index;
768 char file_name[PATH_MAX];
769 struct fio_file *f;
770 int len = 0;
771
772 dprint(FD_FILE, "add file %s\n", fname);
773
774 f = smalloc(sizeof(*f));
775 if (!f) {
776 log_err("fio: smalloc OOM\n");
777 assert(0);
778 }
779
780 f->fd = -1;
781
782 if (td->files_size <= td->files_index) {
783 int new_size = td->o.nr_files + 1;
784
785 dprint(FD_FILE, "resize file array to %d files\n", new_size);
786
787 td->files = realloc(td->files, new_size * sizeof(f));
788 td->files_size = new_size;
789 }
790 td->files[cur_files] = f;
791
792 /*
793 * init function, io engine may not be loaded yet
794 */
795 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
796 f->real_file_size = -1ULL;
797
798 if (td->o.directory)
799 len = sprintf(file_name, "%s/", td->o.directory);
800
801 sprintf(file_name + len, "%s", fname);
802 f->file_name = smalloc_strdup(file_name);
803 if (!f->file_name) {
804 log_err("fio: smalloc OOM\n");
805 assert(0);
806 }
807
808 get_file_type(f);
809
810 switch (td->o.file_lock_mode) {
811 case FILE_LOCK_NONE:
812 break;
813 case FILE_LOCK_READWRITE:
814 f->lock = fio_mutex_rw_init();
815 break;
816 case FILE_LOCK_EXCLUSIVE:
817 f->lock = fio_mutex_init(1);
818 break;
819 default:
820 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
821 assert(0);
822 }
823
824 td->files_index++;
825 if (f->filetype == FIO_TYPE_FILE)
826 td->nr_normal_files++;
827
828 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
829 cur_files);
830
831 return cur_files;
832}
833
834void get_file(struct fio_file *f)
835{
836 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
837 assert(fio_file_open(f));
838 f->references++;
839}
840
841int put_file(struct thread_data *td, struct fio_file *f)
842{
843 int f_ret = 0, ret = 0;
844
845 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
846
847 if (!fio_file_open(f))
848 return 0;
849
850 assert(f->references);
851 if (--f->references)
852 return 0;
853
854 if (should_fsync(td) && td->o.fsync_on_close)
855 f_ret = fsync(f->fd);
856
857 if (td->io_ops->close_file)
858 ret = td->io_ops->close_file(td, f);
859
860 if (!ret)
861 ret = f_ret;
862
863 td->nr_open_files--;
864 fio_file_clear_open(f);
865 return ret;
866}
867
868void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
869{
870 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
871 return;
872
873 if (f->lock_owner == td && f->lock_batch--)
874 return;
875
876 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
877 if (ddir == DDIR_READ)
878 fio_mutex_down_read(f->lock);
879 else
880 fio_mutex_down_write(f->lock);
881 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
882 fio_mutex_down(f->lock);
883
884 f->lock_owner = td;
885 f->lock_batch = td->o.lockfile_batch;
886 f->lock_ddir = ddir;
887}
888
889void unlock_file(struct thread_data *td, struct fio_file *f)
890{
891 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
892 return;
893 if (f->lock_batch)
894 return;
895
896 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
897 const int is_read = f->lock_ddir == DDIR_READ;
898 int val = fio_mutex_getval(f->lock);
899
900 if ((is_read && val == 1) || (!is_read && val == -1))
901 f->lock_owner = NULL;
902
903 if (is_read)
904 fio_mutex_up_read(f->lock);
905 else
906 fio_mutex_up_write(f->lock);
907 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
908 int val = fio_mutex_getval(f->lock);
909
910 if (val == 0)
911 f->lock_owner = NULL;
912
913 fio_mutex_up(f->lock);
914 }
915}
916
917void unlock_file_all(struct thread_data *td, struct fio_file *f)
918{
919 if (f->lock_owner != td)
920 return;
921
922 f->lock_batch = 0;
923 unlock_file(td, f);
924}
925
926static int recurse_dir(struct thread_data *td, const char *dirname)
927{
928 struct dirent *dir;
929 int ret = 0;
930 DIR *D;
931
932 D = opendir(dirname);
933 if (!D) {
934 char buf[FIO_VERROR_SIZE];
935
936 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
937 td_verror(td, errno, buf);
938 return 1;
939 }
940
941 while ((dir = readdir(D)) != NULL) {
942 char full_path[PATH_MAX];
943 struct stat sb;
944
945 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
946 continue;
947
948 sprintf(full_path, "%s/%s", dirname, dir->d_name);
949
950 if (lstat(full_path, &sb) == -1) {
951 if (errno != ENOENT) {
952 td_verror(td, errno, "stat");
953 return 1;
954 }
955 }
956
957 if (S_ISREG(sb.st_mode)) {
958 add_file(td, full_path);
959 td->o.nr_files++;
960 continue;
961 }
962 if (!S_ISDIR(sb.st_mode))
963 continue;
964
965 ret = recurse_dir(td, full_path);
966 if (ret)
967 break;
968 }
969
970 closedir(D);
971 return ret;
972}
973
974int add_dir_files(struct thread_data *td, const char *path)
975{
976 int ret = recurse_dir(td, path);
977
978 if (!ret)
979 log_info("fio: opendir added %d files\n", td->o.nr_files);
980
981 return ret;
982}
983
984void dup_files(struct thread_data *td, struct thread_data *org)
985{
986 struct fio_file *f;
987 unsigned int i;
988
989 dprint(FD_FILE, "dup files: %d\n", org->files_index);
990
991 if (!org->files)
992 return;
993
994 td->files = malloc(org->files_index * sizeof(f));
995
996 for_each_file(org, f, i) {
997 struct fio_file *__f;
998
999 __f = smalloc(sizeof(*__f));
1000 if (!__f) {
1001 log_err("fio: smalloc OOM\n");
1002 assert(0);
1003 }
1004
1005 if (f->file_name) {
1006 __f->file_name = smalloc_strdup(f->file_name);
1007 if (!__f->file_name) {
1008 log_err("fio: smalloc OOM\n");
1009 assert(0);
1010 }
1011
1012 __f->filetype = f->filetype;
1013 }
1014
1015 td->files[i] = __f;
1016 }
1017}
1018
1019/*
1020 * Returns the index that matches the filename, or -1 if not there
1021 */
1022int get_fileno(struct thread_data *td, const char *fname)
1023{
1024 struct fio_file *f;
1025 unsigned int i;
1026
1027 for_each_file(td, f, i)
1028 if (!strcmp(f->file_name, fname))
1029 return i;
1030
1031 return -1;
1032}
1033
1034/*
1035 * For log usage, where we add/open/close files automatically
1036 */
1037void free_release_files(struct thread_data *td)
1038{
1039 close_files(td);
1040 td->files_index = 0;
1041 td->nr_normal_files = 0;
1042}
fio - Flexible IO Tester