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