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