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