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Cleanup diskutil.c
[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
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 (td->io_ops->flags & FIO_PIPEIO)
160 return 0;
161
162 if (!fio_file_open(f)) {
163 if (td->io_ops->open_file(td, f)) {
164 log_err("fio: cannot pre-read, failed to open file\n");
165 return 1;
166 }
167 did_open = 1;
168 }
169
170 old_runstate = td->runstate;
171 td_set_runstate(td, TD_PRE_READING);
172
173 bs = td->o.max_bs[DDIR_READ];
174 b = malloc(bs);
175 memset(b, 0, bs);
176
177 lseek(f->fd, f->file_offset, SEEK_SET);
178 left = f->io_size;
179
180 while (left && !td->terminate) {
181 if (bs > left)
182 bs = left;
183
184 r = read(f->fd, b, bs);
185
186 if (r == (int) bs) {
187 left -= bs;
188 continue;
189 } else {
190 td_verror(td, EIO, "pre_read");
191 break;
192 }
193 }
194
195 td_set_runstate(td, old_runstate);
196
197 if (did_open)
198 td->io_ops->close_file(td, f);
199 free(b);
200 return 0;
201}
202
203static unsigned long long get_rand_file_size(struct thread_data *td)
204{
205 unsigned long long ret, sized;
206 long r;
207
208 r = os_random_long(&td->file_size_state);
209 sized = td->o.file_size_high - td->o.file_size_low;
210 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
211 ret += td->o.file_size_low;
212 ret -= (ret % td->o.rw_min_bs);
213 return ret;
214}
215
216static int file_size(struct thread_data *td, struct fio_file *f)
217{
218 struct stat st;
219
220 if (stat(f->file_name, &st) == -1) {
221 td_verror(td, errno, "fstat");
222 return 1;
223 }
224
225 f->real_file_size = st.st_size;
226 return 0;
227}
228
229static int bdev_size(struct thread_data *td, struct fio_file *f)
230{
231 unsigned long long bytes;
232 int r;
233
234 if (td->io_ops->open_file(td, f)) {
235 log_err("fio: failed opening blockdev %s for size check\n",
236 f->file_name);
237 return 1;
238 }
239
240 r = blockdev_size(f->fd, &bytes);
241 if (r) {
242 td_verror(td, r, "blockdev_size");
243 goto err;
244 }
245
246 if (!bytes) {
247 log_err("%s: zero sized block device?\n", f->file_name);
248 goto err;
249 }
250
251 f->real_file_size = bytes;
252 td->io_ops->close_file(td, f);
253 return 0;
254err:
255 td->io_ops->close_file(td, f);
256 return 1;
257}
258
259static int get_file_size(struct thread_data *td, struct fio_file *f)
260{
261 int ret = 0;
262
263 if (fio_file_size_known(f))
264 return 0;
265
266 if (f->filetype == FIO_TYPE_FILE)
267 ret = file_size(td, f);
268 else if (f->filetype == FIO_TYPE_BD)
269 ret = bdev_size(td, f);
270 else
271 f->real_file_size = -1;
272
273 if (ret)
274 return ret;
275
276 if (f->file_offset > f->real_file_size) {
277 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
278 f->file_offset, f->real_file_size);
279 return 1;
280 }
281
282 fio_file_set_size_known(f);
283 return 0;
284}
285
286static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
287 unsigned long long off,
288 unsigned long long len)
289{
290 int ret = 0;
291
292 if (len == -1ULL)
293 len = f->io_size;
294 if (off == -1ULL)
295 off = f->file_offset;
296
297 if (len == -1ULL || off == -1ULL)
298 return 0;
299
300 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
301 len);
302
303 /*
304 * FIXME: add blockdev flushing too
305 */
306 if (f->mmap_ptr) {
307 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
308#ifdef FIO_MADV_FREE
309 (void) madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
310#endif
311 } else if (f->filetype == FIO_TYPE_FILE) {
312 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
313 } else if (f->filetype == FIO_TYPE_BD) {
314 ret = blockdev_invalidate_cache(f->fd);
315 if (ret < 0 && errno == EACCES && geteuid()) {
316 if (!root_warn) {
317 log_err("fio: only root may flush block "
318 "devices. Cache flush bypassed!\n");
319 root_warn = 1;
320 }
321 ret = 0;
322 }
323 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
324 ret = 0;
325
326 if (ret < 0) {
327 td_verror(td, errno, "invalidate_cache");
328 return 1;
329 } else if (ret > 0) {
330 td_verror(td, ret, "invalidate_cache");
331 return 1;
332 }
333
334 return ret;
335
336}
337
338int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
339{
340 if (!fio_file_open(f))
341 return 0;
342
343 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
344}
345
346int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
347{
348 int ret = 0;
349
350 dprint(FD_FILE, "fd close %s\n", f->file_name);
351
352 remove_file_hash(f);
353
354 if (close(f->fd) < 0)
355 ret = errno;
356
357 f->fd = -1;
358 return ret;
359}
360
361static int file_lookup_open(struct fio_file *f, int flags)
362{
363 struct fio_file *__f;
364 int from_hash;
365
366 __f = lookup_file_hash(f->file_name);
367 if (__f) {
368 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
369 /*
370 * racy, need the __f->lock locked
371 */
372 f->lock = __f->lock;
373 f->lock_owner = __f->lock_owner;
374 f->lock_batch = __f->lock_batch;
375 f->lock_ddir = __f->lock_ddir;
376 from_hash = 1;
377 } else {
378 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
379 from_hash = 0;
380 }
381
382 f->fd = open(f->file_name, flags, 0600);
383 return from_hash;
384}
385
386int generic_open_file(struct thread_data *td, struct fio_file *f)
387{
388 int is_std = 0;
389 int flags = 0;
390 int from_hash = 0;
391
392 dprint(FD_FILE, "fd open %s\n", f->file_name);
393
394 if (!strcmp(f->file_name, "-")) {
395 if (td_rw(td)) {
396 log_err("fio: can't read/write to stdin/out\n");
397 return 1;
398 }
399 is_std = 1;
400
401 /*
402 * move output logging to stderr, if we are writing to stdout
403 */
404 if (td_write(td))
405 f_out = stderr;
406 }
407
408 if (td->o.odirect)
409 flags |= OS_O_DIRECT;
410 if (td->o.sync_io)
411 flags |= O_SYNC;
412 if (f->filetype != FIO_TYPE_FILE)
413 flags |= FIO_O_NOATIME;
414 if (td->o.create_on_open)
415 flags |= O_CREAT;
416
417open_again:
418 if (td_write(td)) {
419 if (!read_only)
420 flags |= O_RDWR;
421
422 if (f->filetype == FIO_TYPE_FILE)
423 flags |= O_CREAT;
424
425 if (is_std)
426 f->fd = dup(STDOUT_FILENO);
427 else
428 from_hash = file_lookup_open(f, flags);
429 } else {
430 if (f->filetype == FIO_TYPE_CHAR && !read_only)
431 flags |= O_RDWR;
432 else
433 flags |= O_RDONLY;
434
435 if (is_std)
436 f->fd = dup(STDIN_FILENO);
437 else
438 from_hash = file_lookup_open(f, flags);
439 }
440
441 if (f->fd == -1) {
442 char buf[FIO_VERROR_SIZE];
443 int __e = errno;
444
445 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
446 flags &= ~FIO_O_NOATIME;
447 goto open_again;
448 }
449
450 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
451
452 td_verror(td, __e, buf);
453 }
454
455 if (!from_hash && f->fd != -1) {
456 if (add_file_hash(f)) {
457 int ret;
458
459 /*
460 * OK to ignore, we haven't done anything with it
461 */
462 ret = generic_close_file(td, f);
463 goto open_again;
464 }
465 }
466
467 return 0;
468}
469
470int generic_get_file_size(struct thread_data *td, struct fio_file *f)
471{
472 return get_file_size(td, f);
473}
474
475/*
476 * open/close all files, so that ->real_file_size gets set
477 */
478static int get_file_sizes(struct thread_data *td)
479{
480 struct fio_file *f;
481 unsigned int i;
482 int err = 0;
483
484 for_each_file(td, f, i) {
485 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
486 f->file_name);
487
488 if (td_io_get_file_size(td, f)) {
489 if (td->error != ENOENT) {
490 log_err("%s\n", td->verror);
491 err = 1;
492 }
493 clear_error(td);
494 }
495
496 if (f->real_file_size == -1ULL && td->o.size)
497 f->real_file_size = td->o.size / td->o.nr_files;
498 }
499
500 return err;
501}
502
503/*
504 * Open the files and setup files sizes, creating files if necessary.
505 */
506int setup_files(struct thread_data *td)
507{
508 unsigned long long total_size, extend_size;
509 struct fio_file *f;
510 unsigned int i;
511 int err = 0, need_extend;
512
513 dprint(FD_FILE, "setup files\n");
514
515 if (td->o.read_iolog_file)
516 return 0;
517
518 /*
519 * if ioengine defines a setup() method, it's responsible for
520 * opening the files and setting f->real_file_size to indicate
521 * the valid range for that file.
522 */
523 if (td->io_ops->setup)
524 err = td->io_ops->setup(td);
525 else
526 err = get_file_sizes(td);
527
528 if (err)
529 return err;
530
531 /*
532 * check sizes. if the files/devices do not exist and the size
533 * isn't passed to fio, abort.
534 */
535 total_size = 0;
536 for_each_file(td, f, i) {
537 if (f->real_file_size == -1ULL)
538 total_size = -1ULL;
539 else
540 total_size += f->real_file_size;
541 }
542
543 /*
544 * device/file sizes are zero and no size given, punt
545 */
546 if ((!total_size || total_size == -1ULL) && !td->o.size &&
547 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
548 log_err("%s: you need to specify size=\n", td->o.name);
549 td_verror(td, EINVAL, "total_file_size");
550 return 1;
551 }
552
553 /*
554 * now file sizes are known, so we can set ->io_size. if size= is
555 * not given, ->io_size is just equal to ->real_file_size. if size
556 * is given, ->io_size is size / nr_files.
557 */
558 extend_size = total_size = 0;
559 need_extend = 0;
560 for_each_file(td, f, i) {
561 f->file_offset = td->o.start_offset;
562
563 if (!td->o.file_size_low) {
564 /*
565 * no file size range given, file size is equal to
566 * total size divided by number of files. if that is
567 * zero, set it to the real file size.
568 */
569 f->io_size = td->o.size / td->o.nr_files;
570 if (!f->io_size)
571 f->io_size = f->real_file_size - f->file_offset;
572 } else if (f->real_file_size < td->o.file_size_low ||
573 f->real_file_size > td->o.file_size_high) {
574 if (f->file_offset > td->o.file_size_low)
575 goto err_offset;
576 /*
577 * file size given. if it's fixed, use that. if it's a
578 * range, generate a random size in-between.
579 */
580 if (td->o.file_size_low == td->o.file_size_high) {
581 f->io_size = td->o.file_size_low
582 - f->file_offset;
583 } else {
584 f->io_size = get_rand_file_size(td)
585 - f->file_offset;
586 }
587 } else
588 f->io_size = f->real_file_size - f->file_offset;
589
590 if (f->io_size == -1ULL)
591 total_size = -1ULL;
592 else
593 total_size += f->io_size;
594
595 if (f->filetype == FIO_TYPE_FILE &&
596 (f->io_size + f->file_offset) > f->real_file_size &&
597 !(td->io_ops->flags & FIO_DISKLESSIO)) {
598 if (!td->o.create_on_open) {
599 need_extend++;
600 extend_size += (f->io_size + f->file_offset);
601 } else
602 f->real_file_size = f->io_size + f->file_offset;
603 fio_file_set_extend(f);
604 }
605 }
606
607 if (!td->o.size || td->o.size > total_size)
608 td->o.size = total_size;
609
610 /*
611 * See if we need to extend some files
612 */
613 if (need_extend) {
614 temp_stall_ts = 1;
615 if (!terse_output)
616 log_info("%s: Laying out IO file(s) (%u file(s) /"
617 " %LuMB)\n", td->o.name, need_extend,
618 extend_size >> 20);
619
620 for_each_file(td, f, i) {
621 unsigned long long old_len = -1ULL, extend_len = -1ULL;
622
623 if (!fio_file_extend(f))
624 continue;
625
626 assert(f->filetype == FIO_TYPE_FILE);
627 fio_file_clear_extend(f);
628 if (!td->o.fill_device) {
629 old_len = f->real_file_size;
630 extend_len = f->io_size + f->file_offset - old_len;
631 }
632 f->real_file_size = (f->io_size + f->file_offset);
633 err = extend_file(td, f);
634 if (err)
635 break;
636
637 err = __file_invalidate_cache(td, f, old_len,
638 extend_len);
639 close(f->fd);
640 f->fd = -1;
641 if (err)
642 break;
643 }
644 temp_stall_ts = 0;
645 }
646
647 if (err)
648 return err;
649
650 if (!td->o.zone_size)
651 td->o.zone_size = td->o.size;
652
653 /*
654 * iolog already set the total io size, if we read back
655 * stored entries.
656 */
657 if (!td->o.read_iolog_file)
658 td->total_io_size = td->o.size * td->o.loops;
659 return 0;
660err_offset:
661 log_err("%s: you need to specify valid offset=\n", td->o.name);
662 return 1;
663}
664
665int pre_read_files(struct thread_data *td)
666{
667 struct fio_file *f;
668 unsigned int i;
669
670 dprint(FD_FILE, "pre_read files\n");
671
672 for_each_file(td, f, i) {
673 pre_read_file(td, f);
674 }
675
676 return 1;
677}
678
679int init_random_map(struct thread_data *td)
680{
681 unsigned long long blocks, num_maps;
682 struct fio_file *f;
683 unsigned int i;
684
685 if (td->o.norandommap || !td_random(td))
686 return 0;
687
688 for_each_file(td, f, i) {
689 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
690 (unsigned long long) td->o.rw_min_bs;
691 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
692 (unsigned long long) BLOCKS_PER_MAP;
693 f->file_map = smalloc(num_maps * sizeof(int));
694 if (f->file_map) {
695 f->num_maps = num_maps;
696 continue;
697 }
698 if (!td->o.softrandommap) {
699 log_err("fio: failed allocating random map. If running"
700 " a large number of jobs, try the 'norandommap'"
701 " option or set 'softrandommap'. Or give"
702 " a larger --alloc-size to fio.\n");
703 return 1;
704 }
705
706 log_info("fio: file %s failed allocating random map. Running "
707 "job without.\n", f->file_name);
708 f->num_maps = 0;
709 }
710
711 return 0;
712}
713
714void close_files(struct thread_data *td)
715{
716 struct fio_file *f;
717 unsigned int i;
718
719 for_each_file(td, f, i) {
720 if (fio_file_open(f))
721 td_io_close_file(td, f);
722 }
723}
724
725void close_and_free_files(struct thread_data *td)
726{
727 struct fio_file *f;
728 unsigned int i;
729
730 dprint(FD_FILE, "close files\n");
731
732 for_each_file(td, f, i) {
733 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
734 dprint(FD_FILE, "free unlink %s\n", f->file_name);
735 unlink(f->file_name);
736 }
737
738 if (fio_file_open(f))
739 td_io_close_file(td, f);
740
741 remove_file_hash(f);
742
743 sfree(f->file_name);
744 f->file_name = NULL;
745
746 if (f->file_map) {
747 sfree(f->file_map);
748 f->file_map = NULL;
749 }
750 sfree(f);
751 }
752
753 td->o.filename = NULL;
754 free(td->files);
755 td->files_index = 0;
756 td->files = NULL;
757 td->o.nr_files = 0;
758}
759
760static void get_file_type(struct fio_file *f)
761{
762 struct stat sb;
763
764 if (!strcmp(f->file_name, "-"))
765 f->filetype = FIO_TYPE_PIPE;
766 else
767 f->filetype = FIO_TYPE_FILE;
768
769 if (!lstat(f->file_name, &sb)) {
770 if (S_ISBLK(sb.st_mode))
771 f->filetype = FIO_TYPE_BD;
772 else if (S_ISCHR(sb.st_mode))
773 f->filetype = FIO_TYPE_CHAR;
774 else if (S_ISFIFO(sb.st_mode))
775 f->filetype = FIO_TYPE_PIPE;
776 }
777}
778
779int add_file(struct thread_data *td, const char *fname)
780{
781 int cur_files = td->files_index;
782 char file_name[PATH_MAX];
783 struct fio_file *f;
784 int len = 0;
785
786 dprint(FD_FILE, "add file %s\n", fname);
787
788 f = smalloc(sizeof(*f));
789 if (!f) {
790 log_err("fio: smalloc OOM\n");
791 assert(0);
792 }
793
794 f->fd = -1;
795
796 if (td->files_size <= td->files_index) {
797 int new_size = td->o.nr_files + 1;
798
799 dprint(FD_FILE, "resize file array to %d files\n", new_size);
800
801 td->files = realloc(td->files, new_size * sizeof(f));
802 td->files_size = new_size;
803 }
804 td->files[cur_files] = f;
805
806 /*
807 * init function, io engine may not be loaded yet
808 */
809 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
810 f->real_file_size = -1ULL;
811
812 if (td->o.directory)
813 len = sprintf(file_name, "%s/", td->o.directory);
814
815 sprintf(file_name + len, "%s", fname);
816 f->file_name = smalloc_strdup(file_name);
817 if (!f->file_name) {
818 log_err("fio: smalloc OOM\n");
819 assert(0);
820 }
821
822 get_file_type(f);
823
824 switch (td->o.file_lock_mode) {
825 case FILE_LOCK_NONE:
826 break;
827 case FILE_LOCK_READWRITE:
828 f->lock = fio_mutex_rw_init();
829 break;
830 case FILE_LOCK_EXCLUSIVE:
831 f->lock = fio_mutex_init(1);
832 break;
833 default:
834 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
835 assert(0);
836 }
837
838 td->files_index++;
839 if (f->filetype == FIO_TYPE_FILE)
840 td->nr_normal_files++;
841
842 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
843 cur_files);
844
845 return cur_files;
846}
847
848void get_file(struct fio_file *f)
849{
850 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
851 assert(fio_file_open(f));
852 f->references++;
853}
854
855int put_file(struct thread_data *td, struct fio_file *f)
856{
857 int f_ret = 0, ret = 0;
858
859 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
860
861 if (!fio_file_open(f)) {
862 assert(f->fd == -1);
863 return 0;
864 }
865
866 assert(f->references);
867 if (--f->references)
868 return 0;
869
870 if (should_fsync(td) && td->o.fsync_on_close)
871 f_ret = fsync(f->fd);
872
873 if (td->io_ops->close_file)
874 ret = td->io_ops->close_file(td, f);
875
876 if (!ret)
877 ret = f_ret;
878
879 td->nr_open_files--;
880 fio_file_clear_open(f);
881 assert(f->fd == -1);
882 return ret;
883}
884
885void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
886{
887 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
888 return;
889
890 if (f->lock_owner == td && f->lock_batch--)
891 return;
892
893 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
894 if (ddir == DDIR_READ)
895 fio_mutex_down_read(f->lock);
896 else
897 fio_mutex_down_write(f->lock);
898 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
899 fio_mutex_down(f->lock);
900
901 f->lock_owner = td;
902 f->lock_batch = td->o.lockfile_batch;
903 f->lock_ddir = ddir;
904}
905
906void unlock_file(struct thread_data *td, struct fio_file *f)
907{
908 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
909 return;
910 if (f->lock_batch)
911 return;
912
913 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
914 const int is_read = f->lock_ddir == DDIR_READ;
915 int val = fio_mutex_getval(f->lock);
916
917 if ((is_read && val == 1) || (!is_read && val == -1))
918 f->lock_owner = NULL;
919
920 if (is_read)
921 fio_mutex_up_read(f->lock);
922 else
923 fio_mutex_up_write(f->lock);
924 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
925 int val = fio_mutex_getval(f->lock);
926
927 if (val == 0)
928 f->lock_owner = NULL;
929
930 fio_mutex_up(f->lock);
931 }
932}
933
934void unlock_file_all(struct thread_data *td, struct fio_file *f)
935{
936 if (f->lock_owner != td)
937 return;
938
939 f->lock_batch = 0;
940 unlock_file(td, f);
941}
942
943static int recurse_dir(struct thread_data *td, const char *dirname)
944{
945 struct dirent *dir;
946 int ret = 0;
947 DIR *D;
948
949 D = opendir(dirname);
950 if (!D) {
951 char buf[FIO_VERROR_SIZE];
952
953 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
954 td_verror(td, errno, buf);
955 return 1;
956 }
957
958 while ((dir = readdir(D)) != NULL) {
959 char full_path[PATH_MAX];
960 struct stat sb;
961
962 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
963 continue;
964
965 sprintf(full_path, "%s/%s", dirname, dir->d_name);
966
967 if (lstat(full_path, &sb) == -1) {
968 if (errno != ENOENT) {
969 td_verror(td, errno, "stat");
970 return 1;
971 }
972 }
973
974 if (S_ISREG(sb.st_mode)) {
975 add_file(td, full_path);
976 td->o.nr_files++;
977 continue;
978 }
979 if (!S_ISDIR(sb.st_mode))
980 continue;
981
982 ret = recurse_dir(td, full_path);
983 if (ret)
984 break;
985 }
986
987 closedir(D);
988 return ret;
989}
990
991int add_dir_files(struct thread_data *td, const char *path)
992{
993 int ret = recurse_dir(td, path);
994
995 if (!ret)
996 log_info("fio: opendir added %d files\n", td->o.nr_files);
997
998 return ret;
999}
1000
1001void dup_files(struct thread_data *td, struct thread_data *org)
1002{
1003 struct fio_file *f;
1004 unsigned int i;
1005
1006 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1007
1008 if (!org->files)
1009 return;
1010
1011 td->files = malloc(org->files_index * sizeof(f));
1012
1013 for_each_file(org, f, i) {
1014 struct fio_file *__f;
1015
1016 __f = smalloc(sizeof(*__f));
1017 if (!__f) {
1018 log_err("fio: smalloc OOM\n");
1019 assert(0);
1020 }
1021 __f->fd = -1;
1022
1023 if (f->file_name) {
1024 __f->file_name = smalloc_strdup(f->file_name);
1025 if (!__f->file_name) {
1026 log_err("fio: smalloc OOM\n");
1027 assert(0);
1028 }
1029
1030 __f->filetype = f->filetype;
1031 }
1032
1033 td->files[i] = __f;
1034 }
1035}
1036
1037/*
1038 * Returns the index that matches the filename, or -1 if not there
1039 */
1040int get_fileno(struct thread_data *td, const char *fname)
1041{
1042 struct fio_file *f;
1043 unsigned int i;
1044
1045 for_each_file(td, f, i)
1046 if (!strcmp(f->file_name, fname))
1047 return i;
1048
1049 return -1;
1050}
1051
1052/*
1053 * For log usage, where we add/open/close files automatically
1054 */
1055void free_release_files(struct thread_data *td)
1056{
1057 close_files(td);
1058 td->files_index = 0;
1059 td->nr_normal_files = 0;
1060}
fio - Flexible IO Tester