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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 && !td_write(td)) {
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 if (len == -1ULL || off == -1ULL)
294 return 0;
295
296 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
297 len);
298
299 /*
300 * FIXME: add blockdev flushing too
301 */
302 if (f->mmap_ptr)
303 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
304 else if (f->filetype == FIO_TYPE_FILE) {
305 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
306 } else if (f->filetype == FIO_TYPE_BD) {
307 ret = blockdev_invalidate_cache(f->fd);
308 if (ret < 0 && errno == EACCES && geteuid()) {
309 if (!root_warn) {
310 log_err("fio: only root may flush block "
311 "devices. Cache flush bypassed!\n");
312 root_warn = 1;
313 }
314 ret = 0;
315 }
316 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
317 ret = 0;
318
319 if (ret < 0) {
320 td_verror(td, errno, "invalidate_cache");
321 return 1;
322 } else if (ret > 0) {
323 td_verror(td, ret, "invalidate_cache");
324 return 1;
325 }
326
327 return ret;
328
329}
330
331int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
332{
333 if (!fio_file_open(f))
334 return 0;
335
336 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
337}
338
339int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
340{
341 int ret = 0;
342
343 dprint(FD_FILE, "fd close %s\n", f->file_name);
344
345 remove_file_hash(f);
346
347 if (close(f->fd) < 0)
348 ret = errno;
349
350 f->fd = -1;
351 return ret;
352}
353
354static int file_lookup_open(struct fio_file *f, int flags)
355{
356 struct fio_file *__f;
357 int from_hash;
358
359 __f = lookup_file_hash(f->file_name);
360 if (__f) {
361 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
362 /*
363 * racy, need the __f->lock locked
364 */
365 f->lock = __f->lock;
366 f->lock_owner = __f->lock_owner;
367 f->lock_batch = __f->lock_batch;
368 f->lock_ddir = __f->lock_ddir;
369 from_hash = 1;
370 } else {
371 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
372 from_hash = 0;
373 }
374
375 f->fd = open(f->file_name, flags, 0600);
376 return from_hash;
377}
378
379int generic_open_file(struct thread_data *td, struct fio_file *f)
380{
381 int is_std = 0;
382 int flags = 0;
383 int from_hash = 0;
384
385 dprint(FD_FILE, "fd open %s\n", f->file_name);
386
387 if (!strcmp(f->file_name, "-")) {
388 if (td_rw(td)) {
389 log_err("fio: can't read/write to stdin/out\n");
390 return 1;
391 }
392 is_std = 1;
393
394 /*
395 * move output logging to stderr, if we are writing to stdout
396 */
397 if (td_write(td))
398 f_out = stderr;
399 }
400
401 if (td->o.odirect)
402 flags |= OS_O_DIRECT;
403 if (td->o.sync_io)
404 flags |= O_SYNC;
405 if (f->filetype != FIO_TYPE_FILE)
406 flags |= FIO_O_NOATIME;
407 if (td->o.create_on_open)
408 flags |= O_CREAT;
409
410open_again:
411 if (td_write(td)) {
412 if (!read_only)
413 flags |= O_RDWR;
414
415 if (f->filetype == FIO_TYPE_FILE)
416 flags |= O_CREAT;
417
418 if (is_std)
419 f->fd = dup(STDOUT_FILENO);
420 else
421 from_hash = file_lookup_open(f, flags);
422 } else {
423 if (f->filetype == FIO_TYPE_CHAR && !read_only)
424 flags |= O_RDWR;
425 else
426 flags |= O_RDONLY;
427
428 if (is_std)
429 f->fd = dup(STDIN_FILENO);
430 else
431 from_hash = file_lookup_open(f, flags);
432 }
433
434 if (f->fd == -1) {
435 char buf[FIO_VERROR_SIZE];
436 int __e = errno;
437
438 if (errno == EPERM && (flags & FIO_O_NOATIME)) {
439 flags &= ~FIO_O_NOATIME;
440 goto open_again;
441 }
442
443 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
444
445 td_verror(td, __e, buf);
446 }
447
448 if (!from_hash && f->fd != -1) {
449 if (add_file_hash(f)) {
450 int ret;
451
452 /*
453 * OK to ignore, we haven't done anything with it
454 */
455 ret = generic_close_file(td, f);
456 goto open_again;
457 }
458 }
459
460 return 0;
461}
462
463int generic_get_file_size(struct thread_data *td, struct fio_file *f)
464{
465 return get_file_size(td, f);
466}
467
468/*
469 * open/close all files, so that ->real_file_size gets set
470 */
471static int get_file_sizes(struct thread_data *td)
472{
473 struct fio_file *f;
474 unsigned int i;
475 int err = 0;
476
477 for_each_file(td, f, i) {
478 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
479 f->file_name);
480
481 if (td_io_get_file_size(td, f)) {
482 if (td->error != ENOENT) {
483 log_err("%s\n", td->verror);
484 err = 1;
485 }
486 clear_error(td);
487 }
488
489 if (f->real_file_size == -1ULL && td->o.size)
490 f->real_file_size = td->o.size / td->o.nr_files;
491 }
492
493 return err;
494}
495
496/*
497 * Open the files and setup files sizes, creating files if necessary.
498 */
499int setup_files(struct thread_data *td)
500{
501 unsigned long long total_size, extend_size;
502 struct fio_file *f;
503 unsigned int i;
504 int err = 0, need_extend;
505
506 dprint(FD_FILE, "setup files\n");
507
508 if (td->o.read_iolog_file)
509 return 0;
510
511 /*
512 * if ioengine defines a setup() method, it's responsible for
513 * opening the files and setting f->real_file_size to indicate
514 * the valid range for that file.
515 */
516 if (td->io_ops->setup)
517 err = td->io_ops->setup(td);
518 else
519 err = get_file_sizes(td);
520
521 if (err)
522 return err;
523
524 /*
525 * check sizes. if the files/devices do not exist and the size
526 * isn't passed to fio, abort.
527 */
528 total_size = 0;
529 for_each_file(td, f, i) {
530 if (f->real_file_size == -1ULL)
531 total_size = -1ULL;
532 else
533 total_size += f->real_file_size;
534 }
535
536 /*
537 * device/file sizes are zero and no size given, punt
538 */
539 if ((!total_size || total_size == -1ULL) && !td->o.size &&
540 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
541 log_err("%s: you need to specify size=\n", td->o.name);
542 td_verror(td, EINVAL, "total_file_size");
543 return 1;
544 }
545
546 /*
547 * now file sizes are known, so we can set ->io_size. if size= is
548 * not given, ->io_size is just equal to ->real_file_size. if size
549 * is given, ->io_size is size / nr_files.
550 */
551 extend_size = total_size = 0;
552 need_extend = 0;
553 for_each_file(td, f, i) {
554 f->file_offset = td->o.start_offset;
555
556 if (!td->o.file_size_low) {
557 /*
558 * no file size range given, file size is equal to
559 * total size divided by number of files. if that is
560 * zero, set it to the real file size.
561 */
562 f->io_size = td->o.size / td->o.nr_files;
563 if (!f->io_size)
564 f->io_size = f->real_file_size - f->file_offset;
565 } else if (f->real_file_size < td->o.file_size_low ||
566 f->real_file_size > td->o.file_size_high) {
567 if (f->file_offset > td->o.file_size_low)
568 goto err_offset;
569 /*
570 * file size given. if it's fixed, use that. if it's a
571 * range, generate a random size in-between.
572 */
573 if (td->o.file_size_low == td->o.file_size_high) {
574 f->io_size = td->o.file_size_low
575 - f->file_offset;
576 } else {
577 f->io_size = get_rand_file_size(td)
578 - f->file_offset;
579 }
580 } else
581 f->io_size = f->real_file_size - f->file_offset;
582
583 if (f->io_size == -1ULL)
584 total_size = -1ULL;
585 else
586 total_size += f->io_size;
587
588 if (f->filetype == FIO_TYPE_FILE &&
589 (f->io_size + f->file_offset) > f->real_file_size &&
590 !(td->io_ops->flags & FIO_DISKLESSIO)) {
591 if (!td->o.create_on_open) {
592 need_extend++;
593 extend_size += (f->io_size + f->file_offset);
594 } else
595 f->real_file_size = f->io_size + f->file_offset;
596 fio_file_set_extend(f);
597 }
598 }
599
600 if (!td->o.size || td->o.size > total_size)
601 td->o.size = total_size;
602
603 /*
604 * See if we need to extend some files
605 */
606 if (need_extend) {
607 temp_stall_ts = 1;
608 if (!terse_output)
609 log_info("%s: Laying out IO file(s) (%u file(s) /"
610 " %LuMiB)\n", td->o.name, need_extend,
611 extend_size >> 20);
612
613 for_each_file(td, f, i) {
614 unsigned long long old_len = -1ULL, extend_len = -1ULL;
615
616 if (!fio_file_extend(f))
617 continue;
618
619 assert(f->filetype == FIO_TYPE_FILE);
620 fio_file_clear_extend(f);
621 if (!td->o.fill_device) {
622 old_len = f->real_file_size;
623 extend_len = f->io_size + f->file_offset - old_len;
624 }
625 f->real_file_size = (f->io_size + f->file_offset);
626 err = extend_file(td, f);
627 if (err)
628 break;
629
630 err = __file_invalidate_cache(td, f, old_len,
631 extend_len);
632 close(f->fd);
633 f->fd = -1;
634 if (err)
635 break;
636 }
637 temp_stall_ts = 0;
638 }
639
640 if (err)
641 return err;
642
643 if (!td->o.zone_size)
644 td->o.zone_size = td->o.size;
645
646 /*
647 * iolog already set the total io size, if we read back
648 * stored entries.
649 */
650 if (!td->o.read_iolog_file)
651 td->total_io_size = td->o.size * td->o.loops;
652 return 0;
653err_offset:
654 log_err("%s: you need to specify valid offset=\n", td->o.name);
655 return 1;
656}
657
658int pre_read_files(struct thread_data *td)
659{
660 struct fio_file *f;
661 unsigned int i;
662
663 dprint(FD_FILE, "pre_read files\n");
664
665 for_each_file(td, f, i) {
666 pre_read_file(td, f);
667 }
668
669 return 1;
670}
671
672int init_random_map(struct thread_data *td)
673{
674 unsigned long long blocks, num_maps;
675 struct fio_file *f;
676 unsigned int i;
677
678 if (td->o.norandommap || !td_random(td))
679 return 0;
680
681 for_each_file(td, f, i) {
682 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
683 (unsigned long long) td->o.rw_min_bs;
684 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
685 (unsigned long long) BLOCKS_PER_MAP;
686 f->file_map = smalloc(num_maps * sizeof(int));
687 if (f->file_map) {
688 f->num_maps = num_maps;
689 continue;
690 }
691 if (!td->o.softrandommap) {
692 log_err("fio: failed allocating random map. If running"
693 " a large number of jobs, try the 'norandommap'"
694 " option or set 'softrandommap'. Or give"
695 " a larger --alloc-size to fio.\n");
696 return 1;
697 }
698
699 log_info("fio: file %s failed allocating random map. Running "
700 "job without.\n", f->file_name);
701 f->num_maps = 0;
702 }
703
704 return 0;
705}
706
707void close_files(struct thread_data *td)
708{
709 struct fio_file *f;
710 unsigned int i;
711
712 for_each_file(td, f, i)
713 td_io_close_file(td, f);
714}
715
716void close_and_free_files(struct thread_data *td)
717{
718 struct fio_file *f;
719 unsigned int i;
720
721 dprint(FD_FILE, "close files\n");
722
723 for_each_file(td, f, i) {
724 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
725 dprint(FD_FILE, "free unlink %s\n", f->file_name);
726 unlink(f->file_name);
727 }
728
729 td_io_close_file(td, f);
730 remove_file_hash(f);
731
732 sfree(f->file_name);
733 f->file_name = NULL;
734
735 if (f->file_map) {
736 sfree(f->file_map);
737 f->file_map = NULL;
738 }
739 sfree(f);
740 }
741
742 td->o.filename = NULL;
743 free(td->files);
744 td->files_index = 0;
745 td->files = NULL;
746 td->o.nr_files = 0;
747}
748
749static void get_file_type(struct fio_file *f)
750{
751 struct stat sb;
752
753 if (!strcmp(f->file_name, "-"))
754 f->filetype = FIO_TYPE_PIPE;
755 else
756 f->filetype = FIO_TYPE_FILE;
757
758 if (!lstat(f->file_name, &sb)) {
759 if (S_ISBLK(sb.st_mode))
760 f->filetype = FIO_TYPE_BD;
761 else if (S_ISCHR(sb.st_mode))
762 f->filetype = FIO_TYPE_CHAR;
763 else if (S_ISFIFO(sb.st_mode))
764 f->filetype = FIO_TYPE_PIPE;
765 }
766}
767
768int add_file(struct thread_data *td, const char *fname)
769{
770 int cur_files = td->files_index;
771 char file_name[PATH_MAX];
772 struct fio_file *f;
773 int len = 0;
774
775 dprint(FD_FILE, "add file %s\n", fname);
776
777 f = smalloc(sizeof(*f));
778 if (!f) {
779 log_err("fio: smalloc OOM\n");
780 assert(0);
781 }
782
783 f->fd = -1;
784
785 if (td->files_size <= td->files_index) {
786 int new_size = td->o.nr_files + 1;
787
788 dprint(FD_FILE, "resize file array to %d files\n", new_size);
789
790 td->files = realloc(td->files, new_size * sizeof(f));
791 td->files_size = new_size;
792 }
793 td->files[cur_files] = f;
794
795 /*
796 * init function, io engine may not be loaded yet
797 */
798 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
799 f->real_file_size = -1ULL;
800
801 if (td->o.directory)
802 len = sprintf(file_name, "%s/", td->o.directory);
803
804 sprintf(file_name + len, "%s", fname);
805 f->file_name = smalloc_strdup(file_name);
806 if (!f->file_name) {
807 log_err("fio: smalloc OOM\n");
808 assert(0);
809 }
810
811 get_file_type(f);
812
813 switch (td->o.file_lock_mode) {
814 case FILE_LOCK_NONE:
815 break;
816 case FILE_LOCK_READWRITE:
817 f->lock = fio_mutex_rw_init();
818 break;
819 case FILE_LOCK_EXCLUSIVE:
820 f->lock = fio_mutex_init(1);
821 break;
822 default:
823 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
824 assert(0);
825 }
826
827 td->files_index++;
828 if (f->filetype == FIO_TYPE_FILE)
829 td->nr_normal_files++;
830
831 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
832 cur_files);
833
834 return cur_files;
835}
836
837void get_file(struct fio_file *f)
838{
839 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
840 assert(fio_file_open(f));
841 f->references++;
842}
843
844int put_file(struct thread_data *td, struct fio_file *f)
845{
846 int f_ret = 0, ret = 0;
847
848 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
849
850 if (!fio_file_open(f))
851 return 0;
852
853 assert(f->references);
854 if (--f->references)
855 return 0;
856
857 if (should_fsync(td) && td->o.fsync_on_close)
858 f_ret = fsync(f->fd);
859
860 if (td->io_ops->close_file)
861 ret = td->io_ops->close_file(td, f);
862
863 if (!ret)
864 ret = f_ret;
865
866 td->nr_open_files--;
867 fio_file_clear_open(f);
868 return ret;
869}
870
871void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
872{
873 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
874 return;
875
876 if (f->lock_owner == td && f->lock_batch--)
877 return;
878
879 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
880 if (ddir == DDIR_READ)
881 fio_mutex_down_read(f->lock);
882 else
883 fio_mutex_down_write(f->lock);
884 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
885 fio_mutex_down(f->lock);
886
887 f->lock_owner = td;
888 f->lock_batch = td->o.lockfile_batch;
889 f->lock_ddir = ddir;
890}
891
892void unlock_file(struct thread_data *td, struct fio_file *f)
893{
894 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
895 return;
896 if (f->lock_batch)
897 return;
898
899 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
900 const int is_read = f->lock_ddir == DDIR_READ;
901 int val = fio_mutex_getval(f->lock);
902
903 if ((is_read && val == 1) || (!is_read && val == -1))
904 f->lock_owner = NULL;
905
906 if (is_read)
907 fio_mutex_up_read(f->lock);
908 else
909 fio_mutex_up_write(f->lock);
910 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
911 int val = fio_mutex_getval(f->lock);
912
913 if (val == 0)
914 f->lock_owner = NULL;
915
916 fio_mutex_up(f->lock);
917 }
918}
919
920void unlock_file_all(struct thread_data *td, struct fio_file *f)
921{
922 if (f->lock_owner != td)
923 return;
924
925 f->lock_batch = 0;
926 unlock_file(td, f);
927}
928
929static int recurse_dir(struct thread_data *td, const char *dirname)
930{
931 struct dirent *dir;
932 int ret = 0;
933 DIR *D;
934
935 D = opendir(dirname);
936 if (!D) {
937 char buf[FIO_VERROR_SIZE];
938
939 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
940 td_verror(td, errno, buf);
941 return 1;
942 }
943
944 while ((dir = readdir(D)) != NULL) {
945 char full_path[PATH_MAX];
946 struct stat sb;
947
948 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
949 continue;
950
951 sprintf(full_path, "%s/%s", dirname, dir->d_name);
952
953 if (lstat(full_path, &sb) == -1) {
954 if (errno != ENOENT) {
955 td_verror(td, errno, "stat");
956 return 1;
957 }
958 }
959
960 if (S_ISREG(sb.st_mode)) {
961 add_file(td, full_path);
962 td->o.nr_files++;
963 continue;
964 }
965 if (!S_ISDIR(sb.st_mode))
966 continue;
967
968 ret = recurse_dir(td, full_path);
969 if (ret)
970 break;
971 }
972
973 closedir(D);
974 return ret;
975}
976
977int add_dir_files(struct thread_data *td, const char *path)
978{
979 int ret = recurse_dir(td, path);
980
981 if (!ret)
982 log_info("fio: opendir added %d files\n", td->o.nr_files);
983
984 return ret;
985}
986
987void dup_files(struct thread_data *td, struct thread_data *org)
988{
989 struct fio_file *f;
990 unsigned int i;
991
992 dprint(FD_FILE, "dup files: %d\n", org->files_index);
993
994 if (!org->files)
995 return;
996
997 td->files = malloc(org->files_index * sizeof(f));
998
999 for_each_file(org, f, i) {
1000 struct fio_file *__f;
1001
1002 __f = smalloc(sizeof(*__f));
1003 if (!__f) {
1004 log_err("fio: smalloc OOM\n");
1005 assert(0);
1006 }
1007
1008 if (f->file_name) {
1009 __f->file_name = smalloc_strdup(f->file_name);
1010 if (!__f->file_name) {
1011 log_err("fio: smalloc OOM\n");
1012 assert(0);
1013 }
1014
1015 __f->filetype = f->filetype;
1016 }
1017
1018 td->files[i] = __f;
1019 }
1020}
1021
1022/*
1023 * Returns the index that matches the filename, or -1 if not there
1024 */
1025int get_fileno(struct thread_data *td, const char *fname)
1026{
1027 struct fio_file *f;
1028 unsigned int i;
1029
1030 for_each_file(td, f, i)
1031 if (!strcmp(f->file_name, fname))
1032 return i;
1033
1034 return -1;
1035}
1036
1037/*
1038 * For log usage, where we add/open/close files automatically
1039 */
1040void free_release_files(struct thread_data *td)
1041{
1042 close_files(td);
1043 td->files_index = 0;
1044 td->nr_normal_files = 0;
1045}
fio - Flexible IO Tester