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