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HOWTO: fix wrong kb_base= description
[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 <libgen.h>
7#include <sys/stat.h>
8#include <sys/mman.h>
9#include <sys/types.h>
10
11#include "fio.h"
12#include "smalloc.h"
13#include "filehash.h"
14#include "options.h"
15#include "os/os.h"
16#include "hash.h"
17#include "lib/axmap.h"
18
19#ifdef CONFIG_LINUX_FALLOCATE
20#include <linux/falloc.h>
21#endif
22
23static int root_warn;
24
25static FLIST_HEAD(filename_list);
26
27/*
28 * List entry for filename_list
29 */
30struct file_name {
31 struct flist_head list;
32 char *filename;
33};
34
35static inline void clear_error(struct thread_data *td)
36{
37 td->error = 0;
38 td->verror[0] = '\0';
39}
40
41static inline int native_fallocate(struct thread_data *td, struct fio_file *f)
42{
43 bool success;
44
45 success = fio_fallocate(f, 0, f->real_file_size);
46 dprint(FD_FILE, "native fallocate of file %s size %llu was "
47 "%ssuccessful\n", f->file_name,
48 (unsigned long long) f->real_file_size,
49 !success ? "un": "");
50
51 if (success)
52 return 0;
53
54 if (errno == ENOSYS)
55 dprint(FD_FILE, "native fallocate is not implemented\n");
56
57 return -1;
58}
59
60static void fallocate_file(struct thread_data *td, struct fio_file *f)
61{
62 int r;
63
64 if (td->o.fill_device)
65 return;
66
67 switch (td->o.fallocate_mode) {
68 case FIO_FALLOCATE_NATIVE:
69 r = native_fallocate(td, f);
70 if (r != 0 && errno != ENOSYS)
71 log_err("fio: native_fallocate call failed: %s\n",
72 strerror(errno));
73 break;
74 case FIO_FALLOCATE_NONE:
75 break;
76#ifdef CONFIG_POSIX_FALLOCATE
77 case FIO_FALLOCATE_POSIX:
78 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
79 f->file_name,
80 (unsigned long long) f->real_file_size);
81
82 r = posix_fallocate(f->fd, 0, f->real_file_size);
83 if (r > 0)
84 log_err("fio: posix_fallocate fails: %s\n", strerror(r));
85 break;
86#endif /* CONFIG_POSIX_FALLOCATE */
87#ifdef CONFIG_LINUX_FALLOCATE
88 case FIO_FALLOCATE_KEEP_SIZE:
89 dprint(FD_FILE, "fallocate(FALLOC_FL_KEEP_SIZE) "
90 "file %s size %llu\n", f->file_name,
91 (unsigned long long) f->real_file_size);
92
93 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0, f->real_file_size);
94 if (r != 0)
95 td_verror(td, errno, "fallocate");
96
97 break;
98#endif /* CONFIG_LINUX_FALLOCATE */
99 default:
100 log_err("fio: unknown fallocate mode: %d\n", td->o.fallocate_mode);
101 assert(0);
102 }
103}
104
105/*
106 * Leaves f->fd open on success, caller must close
107 */
108static int extend_file(struct thread_data *td, struct fio_file *f)
109{
110 int new_layout = 0, unlink_file = 0, flags;
111 unsigned long long left;
112 unsigned int bs;
113 char *b = NULL;
114
115 if (read_only) {
116 log_err("fio: refusing extend of file due to read-only\n");
117 return 0;
118 }
119
120 /*
121 * check if we need to lay the file out complete again. fio
122 * does that for operations involving reads, or for writes
123 * where overwrite is set
124 */
125 if (td_read(td) ||
126 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
127 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
128 new_layout = 1;
129 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
130 unlink_file = 1;
131
132 if (unlink_file || new_layout) {
133 int ret;
134
135 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
136
137 ret = td_io_unlink_file(td, f);
138 if (ret != 0 && ret != ENOENT) {
139 td_verror(td, errno, "unlink");
140 return 1;
141 }
142 }
143
144 flags = O_WRONLY;
145 if (td->o.allow_create)
146 flags |= O_CREAT;
147 if (new_layout)
148 flags |= O_TRUNC;
149 if (td->o.odirect)
150 flags |= OS_O_DIRECT;
151
152#ifdef WIN32
153 flags |= _O_BINARY;
154#endif
155
156 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
157 f->fd = open(f->file_name, flags, 0644);
158 if (f->fd < 0) {
159 int err = errno;
160
161 if (err == ENOENT && !td->o.allow_create)
162 log_err("fio: file creation disallowed by "
163 "allow_file_create=0\n");
164 else
165 td_verror(td, err, "open");
166 return 1;
167 }
168
169 fallocate_file(td, f);
170
171 /*
172 * If our jobs don't require regular files initially, we're done.
173 */
174 if (!new_layout)
175 goto done;
176
177 /*
178 * The size will be -1ULL when fill_device is used, so don't truncate
179 * or fallocate this file, just write it
180 */
181 if (!td->o.fill_device) {
182 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
183 (unsigned long long) f->real_file_size);
184 if (ftruncate(f->fd, f->real_file_size) == -1) {
185 if (errno != EFBIG) {
186 td_verror(td, errno, "ftruncate");
187 goto err;
188 }
189 }
190 }
191
192 left = f->real_file_size;
193 bs = td->o.max_bs[DDIR_WRITE];
194 if (bs > left)
195 bs = left;
196
197 b = malloc(bs);
198 if (!b) {
199 td_verror(td, errno, "malloc");
200 goto err;
201 }
202
203 while (left && !td->terminate) {
204 ssize_t r;
205
206 if (bs > left)
207 bs = left;
208
209 fill_io_buffer(td, b, bs, bs);
210
211 r = write(f->fd, b, bs);
212
213 if (r > 0) {
214 left -= r;
215 continue;
216 } else {
217 if (r < 0) {
218 int __e = errno;
219
220 if (__e == ENOSPC) {
221 if (td->o.fill_device)
222 break;
223 log_info("fio: ENOSPC on laying out "
224 "file, stopping\n");
225 break;
226 }
227 td_verror(td, errno, "write");
228 } else
229 td_verror(td, EIO, "write");
230
231 break;
232 }
233 }
234
235 if (td->terminate) {
236 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
237 td_io_unlink_file(td, f);
238 } else if (td->o.create_fsync) {
239 if (fsync(f->fd) < 0) {
240 td_verror(td, errno, "fsync");
241 goto err;
242 }
243 }
244 if (td->o.fill_device && !td_write(td)) {
245 fio_file_clear_size_known(f);
246 if (td_io_get_file_size(td, f))
247 goto err;
248 if (f->io_size > f->real_file_size)
249 f->io_size = f->real_file_size;
250 }
251
252 free(b);
253done:
254 return 0;
255err:
256 close(f->fd);
257 f->fd = -1;
258 if (b)
259 free(b);
260 return 1;
261}
262
263static int pre_read_file(struct thread_data *td, struct fio_file *f)
264{
265 int ret = 0, r, did_open = 0, old_runstate;
266 unsigned long long left;
267 unsigned int bs;
268 char *b;
269
270 if (td_ioengine_flagged(td, FIO_PIPEIO) ||
271 td_ioengine_flagged(td, FIO_NOIO))
272 return 0;
273
274 if (f->filetype == FIO_TYPE_CHAR)
275 return 0;
276
277 if (!fio_file_open(f)) {
278 if (td->io_ops->open_file(td, f)) {
279 log_err("fio: cannot pre-read, failed to open file\n");
280 return 1;
281 }
282 did_open = 1;
283 }
284
285 old_runstate = td_bump_runstate(td, TD_PRE_READING);
286
287 left = f->io_size;
288 bs = td->o.max_bs[DDIR_READ];
289 if (bs > left)
290 bs = left;
291
292 b = malloc(bs);
293 if (!b) {
294 td_verror(td, errno, "malloc");
295 ret = 1;
296 goto error;
297 }
298 memset(b, 0, bs);
299
300 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
301 td_verror(td, errno, "lseek");
302 log_err("fio: failed to lseek pre-read file\n");
303 ret = 1;
304 goto error;
305 }
306
307 while (left && !td->terminate) {
308 if (bs > left)
309 bs = left;
310
311 r = read(f->fd, b, bs);
312
313 if (r == (int) bs) {
314 left -= bs;
315 continue;
316 } else {
317 td_verror(td, EIO, "pre_read");
318 break;
319 }
320 }
321
322error:
323 td_restore_runstate(td, old_runstate);
324
325 if (did_open)
326 td->io_ops->close_file(td, f);
327
328 free(b);
329 return ret;
330}
331
332unsigned long long get_rand_file_size(struct thread_data *td)
333{
334 unsigned long long ret, sized;
335 uint64_t frand_max;
336 unsigned long r;
337
338 frand_max = rand_max(&td->file_size_state);
339 r = __rand(&td->file_size_state);
340 sized = td->o.file_size_high - td->o.file_size_low;
341 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
342 ret += td->o.file_size_low;
343 ret -= (ret % td->o.rw_min_bs);
344 return ret;
345}
346
347static int file_size(struct thread_data *td, struct fio_file *f)
348{
349 struct stat st;
350
351 if (stat(f->file_name, &st) == -1) {
352 td_verror(td, errno, "fstat");
353 return 1;
354 }
355
356 f->real_file_size = st.st_size;
357 return 0;
358}
359
360static int bdev_size(struct thread_data *td, struct fio_file *f)
361{
362 unsigned long long bytes = 0;
363 int r;
364
365 if (td->io_ops->open_file(td, f)) {
366 log_err("fio: failed opening blockdev %s for size check\n",
367 f->file_name);
368 return 1;
369 }
370
371 r = blockdev_size(f, &bytes);
372 if (r) {
373 td_verror(td, r, "blockdev_size");
374 goto err;
375 }
376
377 if (!bytes) {
378 log_err("%s: zero sized block device?\n", f->file_name);
379 goto err;
380 }
381
382 f->real_file_size = bytes;
383 td->io_ops->close_file(td, f);
384 return 0;
385err:
386 td->io_ops->close_file(td, f);
387 return 1;
388}
389
390static int char_size(struct thread_data *td, struct fio_file *f)
391{
392#ifdef FIO_HAVE_CHARDEV_SIZE
393 unsigned long long bytes = 0;
394 int r;
395
396 if (td->io_ops->open_file(td, f)) {
397 log_err("fio: failed opening chardev %s for size check\n",
398 f->file_name);
399 return 1;
400 }
401
402 r = chardev_size(f, &bytes);
403 if (r) {
404 td_verror(td, r, "chardev_size");
405 goto err;
406 }
407
408 if (!bytes) {
409 log_err("%s: zero sized char device?\n", f->file_name);
410 goto err;
411 }
412
413 f->real_file_size = bytes;
414 td->io_ops->close_file(td, f);
415 return 0;
416err:
417 td->io_ops->close_file(td, f);
418 return 1;
419#else
420 f->real_file_size = -1ULL;
421 return 0;
422#endif
423}
424
425static int get_file_size(struct thread_data *td, struct fio_file *f)
426{
427 int ret = 0;
428
429 if (fio_file_size_known(f))
430 return 0;
431
432 if (f->filetype == FIO_TYPE_FILE)
433 ret = file_size(td, f);
434 else if (f->filetype == FIO_TYPE_BLOCK)
435 ret = bdev_size(td, f);
436 else if (f->filetype == FIO_TYPE_CHAR)
437 ret = char_size(td, f);
438 else
439 f->real_file_size = -1ULL;
440
441 /*
442 * Leave ->real_file_size with 0 since it could be expectation
443 * of initial setup for regular files.
444 */
445 if (ret)
446 return ret;
447
448 /*
449 * If ->real_file_size is -1, a conditional for the message
450 * "offset extends end" is always true, but it makes no sense,
451 * so just return the same value here.
452 */
453 if (f->real_file_size == -1ULL) {
454 log_info("%s: failed to get file size of %s\n", td->o.name,
455 f->file_name);
456 return 1;
457 }
458
459 if (td->o.start_offset && f->file_offset == 0)
460 dprint(FD_FILE, "offset of file %s not initialized yet\n",
461 f->file_name);
462 /*
463 * ->file_offset normally hasn't been initialized yet, so this
464 * is basically always false.
465 */
466 if (f->file_offset > f->real_file_size) {
467 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
468 (unsigned long long) f->file_offset,
469 (unsigned long long) f->real_file_size);
470 return 1;
471 }
472
473 fio_file_set_size_known(f);
474 return 0;
475}
476
477static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
478 unsigned long long off,
479 unsigned long long len)
480{
481 int errval = 0, ret = 0;
482
483#ifdef CONFIG_ESX
484 return 0;
485#endif
486
487 if (len == -1ULL)
488 len = f->io_size;
489 if (off == -1ULL)
490 off = f->file_offset;
491
492 if (len == -1ULL || off == -1ULL)
493 return 0;
494
495 if (td->io_ops->invalidate) {
496 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
497 f->file_name);
498 ret = td->io_ops->invalidate(td, f);
499 if (ret < 0)
500 errval = -ret;
501 } else if (f->filetype == FIO_TYPE_FILE) {
502 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
503 f->file_name, off, len);
504 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
505 if (ret)
506 errval = ret;
507 } else if (f->filetype == FIO_TYPE_BLOCK) {
508 int retry_count = 0;
509
510 dprint(FD_IO, "drop page cache %s\n", f->file_name);
511 ret = blockdev_invalidate_cache(f);
512 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
513 /*
514 * Linux multipath devices reject ioctl while
515 * the maps are being updated. That window can
516 * last tens of milliseconds; we'll try up to
517 * a quarter of a second.
518 */
519 usleep(10000);
520 ret = blockdev_invalidate_cache(f);
521 }
522 if (ret < 0 && errno == EACCES && geteuid()) {
523 if (!root_warn) {
524 log_err("fio: only root may flush block "
525 "devices. Cache flush bypassed!\n");
526 root_warn = 1;
527 }
528 ret = 0;
529 }
530 if (ret < 0)
531 errval = errno;
532 } else if (f->filetype == FIO_TYPE_CHAR ||
533 f->filetype == FIO_TYPE_PIPE) {
534 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
535 ret = 0;
536 }
537
538 /*
539 * Cache flushing isn't a fatal condition, and we know it will
540 * happen on some platforms where we don't have the proper
541 * function to flush eg block device caches. So just warn and
542 * continue on our way.
543 */
544 if (errval)
545 log_info("fio: cache invalidation of %s failed: %s\n",
546 f->file_name, strerror(errval));
547
548 return 0;
549
550}
551
552int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
553{
554 if (!fio_file_open(f))
555 return 0;
556
557 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
558}
559
560int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
561{
562 int ret = 0;
563
564 dprint(FD_FILE, "fd close %s\n", f->file_name);
565
566 remove_file_hash(f);
567
568 if (close(f->fd) < 0)
569 ret = errno;
570
571 f->fd = -1;
572
573 if (f->shadow_fd != -1) {
574 close(f->shadow_fd);
575 f->shadow_fd = -1;
576 }
577
578 f->engine_pos = 0;
579 return ret;
580}
581
582int file_lookup_open(struct fio_file *f, int flags)
583{
584 struct fio_file *__f;
585 int from_hash;
586
587 __f = lookup_file_hash(f->file_name);
588 if (__f) {
589 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
590 f->lock = __f->lock;
591 from_hash = 1;
592 } else {
593 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
594 from_hash = 0;
595 }
596
597#ifdef WIN32
598 flags |= _O_BINARY;
599#endif
600
601 f->fd = open(f->file_name, flags, 0600);
602 return from_hash;
603}
604
605static int file_close_shadow_fds(struct thread_data *td)
606{
607 struct fio_file *f;
608 int num_closed = 0;
609 unsigned int i;
610
611 for_each_file(td, f, i) {
612 if (f->shadow_fd == -1)
613 continue;
614
615 close(f->shadow_fd);
616 f->shadow_fd = -1;
617 num_closed++;
618 }
619
620 return num_closed;
621}
622
623int generic_open_file(struct thread_data *td, struct fio_file *f)
624{
625 int is_std = 0;
626 int flags = 0;
627 int from_hash = 0;
628
629 dprint(FD_FILE, "fd open %s\n", f->file_name);
630
631 if (!strcmp(f->file_name, "-")) {
632 if (td_rw(td)) {
633 log_err("fio: can't read/write to stdin/out\n");
634 return 1;
635 }
636 is_std = 1;
637
638 /*
639 * move output logging to stderr, if we are writing to stdout
640 */
641 if (td_write(td))
642 f_out = stderr;
643 }
644
645 if (td_trim(td))
646 goto skip_flags;
647 if (td->o.odirect)
648 flags |= OS_O_DIRECT;
649 if (td->o.oatomic) {
650 if (!FIO_O_ATOMIC) {
651 td_verror(td, EINVAL, "OS does not support atomic IO");
652 return 1;
653 }
654 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
655 }
656 if (td->o.sync_io)
657 flags |= O_SYNC;
658 if (td->o.create_on_open && td->o.allow_create)
659 flags |= O_CREAT;
660skip_flags:
661 if (f->filetype != FIO_TYPE_FILE)
662 flags |= FIO_O_NOATIME;
663
664open_again:
665 if (td_write(td)) {
666 if (!read_only)
667 flags |= O_RDWR;
668
669 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
670 flags |= O_CREAT;
671
672 if (is_std)
673 f->fd = dup(STDOUT_FILENO);
674 else
675 from_hash = file_lookup_open(f, flags);
676 } else if (td_read(td)) {
677 if (f->filetype == FIO_TYPE_CHAR && !read_only)
678 flags |= O_RDWR;
679 else
680 flags |= O_RDONLY;
681
682 if (is_std)
683 f->fd = dup(STDIN_FILENO);
684 else
685 from_hash = file_lookup_open(f, flags);
686 } else if (td_trim(td)) {
687 assert(!td_rw(td)); /* should have matched above */
688 flags |= O_RDWR;
689 from_hash = file_lookup_open(f, flags);
690 }
691
692 if (f->fd == -1) {
693 char buf[FIO_VERROR_SIZE];
694 int __e = errno;
695
696 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
697 flags &= ~FIO_O_NOATIME;
698 goto open_again;
699 }
700 if (__e == EMFILE && file_close_shadow_fds(td))
701 goto open_again;
702
703 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
704
705 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
706 log_err("fio: looks like your file system does not " \
707 "support direct=1/buffered=0\n");
708 }
709
710 td_verror(td, __e, buf);
711 return 1;
712 }
713
714 if (!from_hash && f->fd != -1) {
715 if (add_file_hash(f)) {
716 int fio_unused ret;
717
718 /*
719 * Stash away descriptor for later close. This is to
720 * work-around a "feature" on Linux, where a close of
721 * an fd that has been opened for write will trigger
722 * udev to call blkid to check partitions, fs id, etc.
723 * That pollutes the device cache, which can slow down
724 * unbuffered accesses.
725 */
726 if (f->shadow_fd == -1)
727 f->shadow_fd = f->fd;
728 else {
729 /*
730 * OK to ignore, we haven't done anything
731 * with it
732 */
733 ret = generic_close_file(td, f);
734 }
735 goto open_again;
736 }
737 }
738
739 return 0;
740}
741
742/*
743 * This function i.e. get_file_size() is the default .get_file_size
744 * implementation of majority of I/O engines.
745 */
746int generic_get_file_size(struct thread_data *td, struct fio_file *f)
747{
748 return get_file_size(td, f);
749}
750
751/*
752 * open/close all files, so that ->real_file_size gets set
753 */
754static int get_file_sizes(struct thread_data *td)
755{
756 struct fio_file *f;
757 unsigned int i;
758 int err = 0;
759
760 for_each_file(td, f, i) {
761 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
762 f->file_name);
763
764 if (td_io_get_file_size(td, f)) {
765 if (td->error != ENOENT) {
766 log_err("%s\n", td->verror);
767 err = 1;
768 break;
769 }
770 clear_error(td);
771 }
772
773 /*
774 * There are corner cases where we end up with -1 for
775 * ->real_file_size due to unsupported file type, etc.
776 * We then just set to size option value divided by number
777 * of files, similar to the way file ->io_size is set.
778 * stat(2) failure doesn't set ->real_file_size to -1.
779 */
780 if (f->real_file_size == -1ULL && td->o.size)
781 f->real_file_size = td->o.size / td->o.nr_files;
782 }
783
784 return err;
785}
786
787struct fio_mount {
788 struct flist_head list;
789 const char *base;
790 char __base[256];
791 unsigned int key;
792};
793
794/*
795 * Get free number of bytes for each file on each unique mount.
796 */
797static unsigned long long get_fs_free_counts(struct thread_data *td)
798{
799 struct flist_head *n, *tmp;
800 unsigned long long ret = 0;
801 struct fio_mount *fm;
802 FLIST_HEAD(list);
803 struct fio_file *f;
804 unsigned int i;
805
806 for_each_file(td, f, i) {
807 struct stat sb;
808 char buf[256];
809
810 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
811 if (f->real_file_size != -1ULL)
812 ret += f->real_file_size;
813 continue;
814 } else if (f->filetype != FIO_TYPE_FILE)
815 continue;
816
817 buf[255] = '\0';
818 strncpy(buf, f->file_name, 255);
819
820 if (stat(buf, &sb) < 0) {
821 if (errno != ENOENT)
822 break;
823 strcpy(buf, ".");
824 if (stat(buf, &sb) < 0)
825 break;
826 }
827
828 fm = NULL;
829 flist_for_each(n, &list) {
830 fm = flist_entry(n, struct fio_mount, list);
831 if (fm->key == sb.st_dev)
832 break;
833
834 fm = NULL;
835 }
836
837 if (fm)
838 continue;
839
840 fm = calloc(1, sizeof(*fm));
841 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
842 fm->base = basename(fm->__base);
843 fm->key = sb.st_dev;
844 flist_add(&fm->list, &list);
845 }
846
847 flist_for_each_safe(n, tmp, &list) {
848 unsigned long long sz;
849
850 fm = flist_entry(n, struct fio_mount, list);
851 flist_del(&fm->list);
852
853 sz = get_fs_free_size(fm->base);
854 if (sz && sz != -1ULL)
855 ret += sz;
856
857 free(fm);
858 }
859
860 return ret;
861}
862
863uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
864{
865 struct thread_options *o = &td->o;
866 unsigned long long align_bs;
867 unsigned long long offset;
868
869 if (o->file_append && f->filetype == FIO_TYPE_FILE)
870 return f->real_file_size;
871
872 if (o->start_offset_percent > 0) {
873 /*
874 * if blockalign is provided, find the min across read, write,
875 * and trim
876 */
877 if (fio_option_is_set(o, ba)) {
878 align_bs = (unsigned long long) min(o->ba[DDIR_READ], o->ba[DDIR_WRITE]);
879 align_bs = min((unsigned long long) o->ba[DDIR_TRIM], align_bs);
880 } else {
881 /* else take the minimum block size */
882 align_bs = td_min_bs(td);
883 }
884
885 /* calculate the raw offset */
886 offset = (f->real_file_size * o->start_offset_percent / 100) +
887 (td->subjob_number * o->offset_increment);
888
889 /*
890 * block align the offset at the next available boundary at
891 * ceiling(offset / align_bs) * align_bs
892 */
893 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
894
895 } else {
896 /* start_offset_percent not set */
897 offset = o->start_offset +
898 td->subjob_number * o->offset_increment;
899 }
900
901 return offset;
902}
903
904/*
905 * Open the files and setup files sizes, creating files if necessary.
906 */
907int setup_files(struct thread_data *td)
908{
909 unsigned long long total_size, extend_size;
910 struct thread_options *o = &td->o;
911 struct fio_file *f;
912 unsigned int i, nr_fs_extra = 0;
913 int err = 0, need_extend;
914 int old_state;
915 const unsigned int bs = td_min_bs(td);
916 uint64_t fs = 0;
917
918 dprint(FD_FILE, "setup files\n");
919
920 old_state = td_bump_runstate(td, TD_SETTING_UP);
921
922 if (o->read_iolog_file)
923 goto done;
924
925 /*
926 * Find out physical size of files or devices for this thread,
927 * before we determine I/O size and range of our targets.
928 * If ioengine defines a setup() method, it's responsible for
929 * opening the files and setting f->real_file_size to indicate
930 * the valid range for that file.
931 */
932 if (td->io_ops->setup)
933 err = td->io_ops->setup(td);
934 else
935 err = get_file_sizes(td);
936
937 if (err)
938 goto err_out;
939
940 /*
941 * check sizes. if the files/devices do not exist and the size
942 * isn't passed to fio, abort.
943 */
944 total_size = 0;
945 for_each_file(td, f, i) {
946 f->fileno = i;
947 if (f->real_file_size == -1ULL)
948 total_size = -1ULL;
949 else
950 total_size += f->real_file_size;
951 }
952
953 if (o->fill_device)
954 td->fill_device_size = get_fs_free_counts(td);
955
956 /*
957 * device/file sizes are zero and no size given, punt
958 */
959 if ((!total_size || total_size == -1ULL) && !o->size &&
960 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
961 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
962 log_err("%s: you need to specify size=\n", o->name);
963 td_verror(td, EINVAL, "total_file_size");
964 goto err_out;
965 }
966
967 /*
968 * Calculate per-file size and potential extra size for the
969 * first files, if needed (i.e. if we don't have a fixed size).
970 */
971 if (!o->file_size_low && o->nr_files) {
972 uint64_t all_fs;
973
974 fs = o->size / o->nr_files;
975 all_fs = fs * o->nr_files;
976
977 if (all_fs < o->size)
978 nr_fs_extra = (o->size - all_fs) / bs;
979 }
980
981 /*
982 * now file sizes are known, so we can set ->io_size. if size= is
983 * not given, ->io_size is just equal to ->real_file_size. if size
984 * is given, ->io_size is size / nr_files.
985 */
986 extend_size = total_size = 0;
987 need_extend = 0;
988 for_each_file(td, f, i) {
989 f->file_offset = get_start_offset(td, f);
990
991 /*
992 * Update ->io_size depending on options specified.
993 * ->file_size_low being 0 means filesize option isn't set.
994 * Non zero ->file_size_low equals ->file_size_high means
995 * filesize option is set in a fixed size format.
996 * Non zero ->file_size_low not equals ->file_size_high means
997 * filesize option is set in a range format.
998 */
999 if (!o->file_size_low) {
1000 /*
1001 * no file size or range given, file size is equal to
1002 * total size divided by number of files. If the size
1003 * doesn't divide nicely with the min blocksize,
1004 * make the first files bigger.
1005 */
1006 f->io_size = fs;
1007 if (nr_fs_extra) {
1008 nr_fs_extra--;
1009 f->io_size += bs;
1010 }
1011
1012 /*
1013 * We normally don't come here for regular files, but
1014 * if the result is 0 for a regular file, set it to the
1015 * real file size. This could be size of the existing
1016 * one if it already exists, but otherwise will be set
1017 * to 0. A new file won't be created because
1018 * ->io_size + ->file_offset equals ->real_file_size.
1019 */
1020 if (!f->io_size) {
1021 if (f->file_offset > f->real_file_size)
1022 goto err_offset;
1023 f->io_size = f->real_file_size - f->file_offset;
1024 if (!f->io_size)
1025 log_info("fio: file %s may be ignored\n",
1026 f->file_name);
1027 }
1028 } else if (f->real_file_size < o->file_size_low ||
1029 f->real_file_size > o->file_size_high) {
1030 if (f->file_offset > o->file_size_low)
1031 goto err_offset;
1032 /*
1033 * file size given. if it's fixed, use that. if it's a
1034 * range, generate a random size in-between.
1035 */
1036 if (o->file_size_low == o->file_size_high)
1037 f->io_size = o->file_size_low - f->file_offset;
1038 else {
1039 f->io_size = get_rand_file_size(td)
1040 - f->file_offset;
1041 }
1042 } else
1043 f->io_size = f->real_file_size - f->file_offset;
1044
1045 if (f->io_size == -1ULL)
1046 total_size = -1ULL;
1047 else {
1048 if (o->size_percent) {
1049 uint64_t file_size;
1050
1051 file_size = f->io_size + f->file_offset;
1052 f->io_size = (file_size *
1053 o->size_percent) / 100;
1054 if (f->io_size > (file_size - f->file_offset))
1055 f->io_size = file_size - f->file_offset;
1056
1057 f->io_size -= (f->io_size % td_min_bs(td));
1058 }
1059 total_size += f->io_size;
1060 }
1061
1062 if (f->filetype == FIO_TYPE_FILE &&
1063 (f->io_size + f->file_offset) > f->real_file_size &&
1064 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1065 if (!o->create_on_open) {
1066 need_extend++;
1067 extend_size += (f->io_size + f->file_offset);
1068 fio_file_set_extend(f);
1069 } else
1070 f->real_file_size = f->io_size + f->file_offset;
1071 }
1072 }
1073
1074 if (td->o.block_error_hist) {
1075 int len;
1076
1077 assert(td->o.nr_files == 1); /* checked in fixup_options */
1078 f = td->files[0];
1079 len = f->io_size / td->o.bs[DDIR_TRIM];
1080 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1081 log_err("fio: cannot calculate block histogram with "
1082 "%d trim blocks, maximum %d\n",
1083 len, MAX_NR_BLOCK_INFOS);
1084 td_verror(td, EINVAL, "block_error_hist");
1085 goto err_out;
1086 }
1087
1088 td->ts.nr_block_infos = len;
1089 for (i = 0; i < len; i++)
1090 td->ts.block_infos[i] =
1091 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1092 } else
1093 td->ts.nr_block_infos = 0;
1094
1095 if (!o->size || (total_size && o->size > total_size))
1096 o->size = total_size;
1097
1098 if (o->size < td_min_bs(td)) {
1099 log_err("fio: blocksize too large for data set\n");
1100 goto err_out;
1101 }
1102
1103 /*
1104 * See if we need to extend some files, typically needed when our
1105 * target regular files don't exist yet, but our jobs require them
1106 * initially due to read I/Os.
1107 */
1108 if (need_extend) {
1109 temp_stall_ts = 1;
1110 if (output_format & FIO_OUTPUT_NORMAL) {
1111 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1112 o->name,
1113 need_extend > 1 ? "s" : "",
1114 need_extend,
1115 need_extend > 1 ? "s" : "",
1116 need_extend > 1 ? "total " : "",
1117 extend_size >> 20);
1118 }
1119
1120 for_each_file(td, f, i) {
1121 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1122
1123 if (!fio_file_extend(f))
1124 continue;
1125
1126 assert(f->filetype == FIO_TYPE_FILE);
1127 fio_file_clear_extend(f);
1128 if (!o->fill_device) {
1129 old_len = f->real_file_size;
1130 extend_len = f->io_size + f->file_offset -
1131 old_len;
1132 }
1133 f->real_file_size = (f->io_size + f->file_offset);
1134 err = extend_file(td, f);
1135 if (err)
1136 break;
1137
1138 err = __file_invalidate_cache(td, f, old_len,
1139 extend_len);
1140
1141 /*
1142 * Shut up static checker
1143 */
1144 if (f->fd != -1)
1145 close(f->fd);
1146
1147 f->fd = -1;
1148 if (err)
1149 break;
1150 }
1151 temp_stall_ts = 0;
1152 }
1153
1154 if (err)
1155 goto err_out;
1156
1157 if (!o->zone_size)
1158 o->zone_size = o->size;
1159
1160 /*
1161 * iolog already set the total io size, if we read back
1162 * stored entries.
1163 */
1164 if (!o->read_iolog_file) {
1165 if (o->io_size)
1166 td->total_io_size = o->io_size * o->loops;
1167 else
1168 td->total_io_size = o->size * o->loops;
1169 }
1170
1171done:
1172 if (o->create_only)
1173 td->done = 1;
1174
1175 td_restore_runstate(td, old_state);
1176 return 0;
1177err_offset:
1178 log_err("%s: you need to specify valid offset=\n", o->name);
1179err_out:
1180 td_restore_runstate(td, old_state);
1181 return 1;
1182}
1183
1184int pre_read_files(struct thread_data *td)
1185{
1186 struct fio_file *f;
1187 unsigned int i;
1188
1189 dprint(FD_FILE, "pre_read files\n");
1190
1191 for_each_file(td, f, i) {
1192 if (pre_read_file(td, f))
1193 return -1;
1194 }
1195
1196 return 0;
1197}
1198
1199static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1200{
1201 unsigned int range_size, seed;
1202 unsigned long nranges;
1203 uint64_t fsize;
1204
1205 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1206 fsize = min(f->real_file_size, f->io_size);
1207
1208 nranges = (fsize + range_size - 1) / range_size;
1209
1210 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1211 if (!td->o.rand_repeatable)
1212 seed = td->rand_seeds[4];
1213
1214 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1215 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1216 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1217 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1218 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1219 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1220
1221 return 1;
1222}
1223
1224static int init_rand_distribution(struct thread_data *td)
1225{
1226 struct fio_file *f;
1227 unsigned int i;
1228 int state;
1229
1230 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1231 return 0;
1232
1233 state = td_bump_runstate(td, TD_SETTING_UP);
1234
1235 for_each_file(td, f, i)
1236 __init_rand_distribution(td, f);
1237
1238 td_restore_runstate(td, state);
1239
1240 return 1;
1241}
1242
1243/*
1244 * Check if the number of blocks exceeds the randomness capability of
1245 * the selected generator. Tausworthe is 32-bit, the others are fullly
1246 * 64-bit capable.
1247 */
1248static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1249 uint64_t blocks)
1250{
1251 if (blocks <= FRAND32_MAX)
1252 return 0;
1253 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1254 return 0;
1255
1256 /*
1257 * If the user hasn't specified a random generator, switch
1258 * to tausworthe64 with informational warning. If the user did
1259 * specify one, just warn.
1260 */
1261 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1262 f->file_name);
1263
1264 if (!fio_option_is_set(&td->o, random_generator)) {
1265 log_info("fio: Switching to tausworthe64. Use the "
1266 "random_generator= option to get rid of this "
1267 "warning.\n");
1268 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1269 return 0;
1270 }
1271
1272 /*
1273 * Just make this information to avoid breaking scripts.
1274 */
1275 log_info("fio: Use the random_generator= option to switch to lfsr or "
1276 "tausworthe64.\n");
1277 return 0;
1278}
1279
1280int init_random_map(struct thread_data *td)
1281{
1282 unsigned long long blocks;
1283 struct fio_file *f;
1284 unsigned int i;
1285
1286 if (init_rand_distribution(td))
1287 return 0;
1288 if (!td_random(td))
1289 return 0;
1290
1291 for_each_file(td, f, i) {
1292 uint64_t fsize = min(f->real_file_size, f->io_size);
1293
1294 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1295
1296 if (check_rand_gen_limits(td, f, blocks))
1297 return 1;
1298
1299 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1300 unsigned long seed;
1301
1302 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1303
1304 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1305 fio_file_set_lfsr(f);
1306 continue;
1307 }
1308 } else if (!td->o.norandommap) {
1309 f->io_axmap = axmap_new(blocks);
1310 if (f->io_axmap) {
1311 fio_file_set_axmap(f);
1312 continue;
1313 }
1314 } else if (td->o.norandommap)
1315 continue;
1316
1317 if (!td->o.softrandommap) {
1318 log_err("fio: failed allocating random map. If running"
1319 " a large number of jobs, try the 'norandommap'"
1320 " option or set 'softrandommap'. Or give"
1321 " a larger --alloc-size to fio.\n");
1322 return 1;
1323 }
1324
1325 log_info("fio: file %s failed allocating random map. Running "
1326 "job without.\n", f->file_name);
1327 }
1328
1329 return 0;
1330}
1331
1332void close_files(struct thread_data *td)
1333{
1334 struct fio_file *f;
1335 unsigned int i;
1336
1337 for_each_file(td, f, i) {
1338 if (fio_file_open(f))
1339 td_io_close_file(td, f);
1340 }
1341}
1342
1343void close_and_free_files(struct thread_data *td)
1344{
1345 struct fio_file *f;
1346 unsigned int i;
1347
1348 dprint(FD_FILE, "close files\n");
1349
1350 for_each_file(td, f, i) {
1351 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1352 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1353 td_io_unlink_file(td, f);
1354 }
1355
1356 if (fio_file_open(f))
1357 td_io_close_file(td, f);
1358
1359 remove_file_hash(f);
1360
1361 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1362 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1363 td_io_unlink_file(td, f);
1364 }
1365
1366 sfree(f->file_name);
1367 f->file_name = NULL;
1368 if (fio_file_axmap(f)) {
1369 axmap_free(f->io_axmap);
1370 f->io_axmap = NULL;
1371 }
1372 sfree(f);
1373 }
1374
1375 td->o.filename = NULL;
1376 free(td->files);
1377 free(td->file_locks);
1378 td->files_index = 0;
1379 td->files = NULL;
1380 td->file_locks = NULL;
1381 td->o.file_lock_mode = FILE_LOCK_NONE;
1382 td->o.nr_files = 0;
1383}
1384
1385static void get_file_type(struct fio_file *f)
1386{
1387 struct stat sb;
1388
1389 if (!strcmp(f->file_name, "-"))
1390 f->filetype = FIO_TYPE_PIPE;
1391 else
1392 f->filetype = FIO_TYPE_FILE;
1393
1394#ifdef WIN32
1395 /* \\.\ is the device namespace in Windows, where every file is
1396 * a block device */
1397 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1398 f->filetype = FIO_TYPE_BLOCK;
1399#endif
1400
1401 if (!stat(f->file_name, &sb)) {
1402 if (S_ISBLK(sb.st_mode))
1403 f->filetype = FIO_TYPE_BLOCK;
1404 else if (S_ISCHR(sb.st_mode))
1405 f->filetype = FIO_TYPE_CHAR;
1406 else if (S_ISFIFO(sb.st_mode))
1407 f->filetype = FIO_TYPE_PIPE;
1408 }
1409}
1410
1411static bool __is_already_allocated(const char *fname, bool set)
1412{
1413 struct flist_head *entry;
1414 bool ret;
1415
1416 ret = file_bloom_exists(fname, set);
1417 if (!ret)
1418 return ret;
1419
1420 flist_for_each(entry, &filename_list) {
1421 struct file_name *fn;
1422
1423 fn = flist_entry(entry, struct file_name, list);
1424
1425 if (!strcmp(fn->filename, fname))
1426 return true;
1427 }
1428
1429 return false;
1430}
1431
1432static bool is_already_allocated(const char *fname)
1433{
1434 bool ret;
1435
1436 fio_file_hash_lock();
1437 ret = __is_already_allocated(fname, false);
1438 fio_file_hash_unlock();
1439
1440 return ret;
1441}
1442
1443static void set_already_allocated(const char *fname)
1444{
1445 struct file_name *fn;
1446
1447 fn = malloc(sizeof(struct file_name));
1448 fn->filename = strdup(fname);
1449
1450 fio_file_hash_lock();
1451 if (!__is_already_allocated(fname, true)) {
1452 flist_add_tail(&fn->list, &filename_list);
1453 fn = NULL;
1454 }
1455 fio_file_hash_unlock();
1456
1457 if (fn) {
1458 free(fn->filename);
1459 free(fn);
1460 }
1461}
1462
1463static void free_already_allocated(void)
1464{
1465 struct flist_head *entry, *tmp;
1466 struct file_name *fn;
1467
1468 if (flist_empty(&filename_list))
1469 return;
1470
1471 fio_file_hash_lock();
1472 flist_for_each_safe(entry, tmp, &filename_list) {
1473 fn = flist_entry(entry, struct file_name, list);
1474 free(fn->filename);
1475 flist_del(&fn->list);
1476 free(fn);
1477 }
1478
1479 fio_file_hash_unlock();
1480}
1481
1482static struct fio_file *alloc_new_file(struct thread_data *td)
1483{
1484 struct fio_file *f;
1485
1486 f = smalloc(sizeof(*f));
1487 if (!f) {
1488 assert(0);
1489 return NULL;
1490 }
1491
1492 f->fd = -1;
1493 f->shadow_fd = -1;
1494 fio_file_reset(td, f);
1495 return f;
1496}
1497
1498bool exists_and_not_regfile(const char *filename)
1499{
1500 struct stat sb;
1501
1502 if (lstat(filename, &sb) == -1)
1503 return false;
1504
1505#ifndef WIN32 /* NOT Windows */
1506 if (S_ISREG(sb.st_mode))
1507 return false;
1508#else
1509 /* \\.\ is the device namespace in Windows, where every file
1510 * is a device node */
1511 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1512 return false;
1513#endif
1514
1515 return true;
1516}
1517
1518int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1519{
1520 int cur_files = td->files_index;
1521 char file_name[PATH_MAX];
1522 struct fio_file *f;
1523 int len = 0;
1524
1525 dprint(FD_FILE, "add file %s\n", fname);
1526
1527 if (td->o.directory)
1528 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1529 td->o.unique_filename);
1530
1531 sprintf(file_name + len, "%s", fname);
1532
1533 /* clean cloned siblings using existing files */
1534 if (numjob && is_already_allocated(file_name) &&
1535 !exists_and_not_regfile(fname))
1536 return 0;
1537
1538 f = alloc_new_file(td);
1539
1540 if (td->files_size <= td->files_index) {
1541 unsigned int new_size = td->o.nr_files + 1;
1542
1543 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1544
1545 td->files = realloc(td->files, new_size * sizeof(f));
1546 if (td->files == NULL) {
1547 log_err("fio: realloc OOM\n");
1548 assert(0);
1549 }
1550 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1551 td->file_locks = realloc(td->file_locks, new_size);
1552 if (!td->file_locks) {
1553 log_err("fio: realloc OOM\n");
1554 assert(0);
1555 }
1556 td->file_locks[cur_files] = FILE_LOCK_NONE;
1557 }
1558 td->files_size = new_size;
1559 }
1560 td->files[cur_files] = f;
1561 f->fileno = cur_files;
1562
1563 /*
1564 * init function, io engine may not be loaded yet
1565 */
1566 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1567 f->real_file_size = -1ULL;
1568
1569 f->file_name = smalloc_strdup(file_name);
1570 if (!f->file_name)
1571 assert(0);
1572
1573 get_file_type(f);
1574
1575 switch (td->o.file_lock_mode) {
1576 case FILE_LOCK_NONE:
1577 break;
1578 case FILE_LOCK_READWRITE:
1579 f->rwlock = fio_rwlock_init();
1580 break;
1581 case FILE_LOCK_EXCLUSIVE:
1582 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1583 break;
1584 default:
1585 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1586 assert(0);
1587 }
1588
1589 td->files_index++;
1590 if (f->filetype == FIO_TYPE_FILE)
1591 td->nr_normal_files++;
1592
1593 set_already_allocated(file_name);
1594
1595 if (inc)
1596 td->o.nr_files++;
1597
1598 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1599 cur_files);
1600
1601 return cur_files;
1602}
1603
1604int add_file_exclusive(struct thread_data *td, const char *fname)
1605{
1606 struct fio_file *f;
1607 unsigned int i;
1608
1609 for_each_file(td, f, i) {
1610 if (!strcmp(f->file_name, fname))
1611 return i;
1612 }
1613
1614 return add_file(td, fname, 0, 1);
1615}
1616
1617void get_file(struct fio_file *f)
1618{
1619 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1620 assert(fio_file_open(f));
1621 f->references++;
1622}
1623
1624int put_file(struct thread_data *td, struct fio_file *f)
1625{
1626 int f_ret = 0, ret = 0;
1627
1628 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1629
1630 if (!fio_file_open(f)) {
1631 assert(f->fd == -1);
1632 return 0;
1633 }
1634
1635 assert(f->references);
1636 if (--f->references)
1637 return 0;
1638
1639 if (should_fsync(td) && td->o.fsync_on_close) {
1640 f_ret = fsync(f->fd);
1641 if (f_ret < 0)
1642 f_ret = errno;
1643 }
1644
1645 if (td->io_ops->close_file)
1646 ret = td->io_ops->close_file(td, f);
1647
1648 if (!ret)
1649 ret = f_ret;
1650
1651 td->nr_open_files--;
1652 fio_file_clear_open(f);
1653 assert(f->fd == -1);
1654 return ret;
1655}
1656
1657void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1658{
1659 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1660 return;
1661
1662 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1663 if (ddir == DDIR_READ)
1664 fio_rwlock_read(f->rwlock);
1665 else
1666 fio_rwlock_write(f->rwlock);
1667 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1668 fio_mutex_down(f->lock);
1669
1670 td->file_locks[f->fileno] = td->o.file_lock_mode;
1671}
1672
1673void unlock_file(struct thread_data *td, struct fio_file *f)
1674{
1675 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1676 return;
1677
1678 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1679 fio_rwlock_unlock(f->rwlock);
1680 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1681 fio_mutex_up(f->lock);
1682
1683 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1684}
1685
1686void unlock_file_all(struct thread_data *td, struct fio_file *f)
1687{
1688 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1689 return;
1690 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1691 unlock_file(td, f);
1692}
1693
1694static int recurse_dir(struct thread_data *td, const char *dirname)
1695{
1696 struct dirent *dir;
1697 int ret = 0;
1698 DIR *D;
1699
1700 D = opendir(dirname);
1701 if (!D) {
1702 char buf[FIO_VERROR_SIZE];
1703
1704 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1705 td_verror(td, errno, buf);
1706 return 1;
1707 }
1708
1709 while ((dir = readdir(D)) != NULL) {
1710 char full_path[PATH_MAX];
1711 struct stat sb;
1712
1713 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1714 continue;
1715
1716 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1717
1718 if (lstat(full_path, &sb) == -1) {
1719 if (errno != ENOENT) {
1720 td_verror(td, errno, "stat");
1721 ret = 1;
1722 break;
1723 }
1724 }
1725
1726 if (S_ISREG(sb.st_mode)) {
1727 add_file(td, full_path, 0, 1);
1728 continue;
1729 }
1730 if (!S_ISDIR(sb.st_mode))
1731 continue;
1732
1733 ret = recurse_dir(td, full_path);
1734 if (ret)
1735 break;
1736 }
1737
1738 closedir(D);
1739 return ret;
1740}
1741
1742int add_dir_files(struct thread_data *td, const char *path)
1743{
1744 int ret = recurse_dir(td, path);
1745
1746 if (!ret)
1747 log_info("fio: opendir added %d files\n", td->o.nr_files);
1748
1749 return ret;
1750}
1751
1752void dup_files(struct thread_data *td, struct thread_data *org)
1753{
1754 struct fio_file *f;
1755 unsigned int i;
1756
1757 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1758
1759 if (!org->files)
1760 return;
1761
1762 td->files = malloc(org->files_index * sizeof(f));
1763
1764 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1765 td->file_locks = malloc(org->files_index);
1766
1767 for_each_file(org, f, i) {
1768 struct fio_file *__f;
1769
1770 __f = alloc_new_file(td);
1771
1772 if (f->file_name) {
1773 __f->file_name = smalloc_strdup(f->file_name);
1774 if (!__f->file_name)
1775 assert(0);
1776
1777 __f->filetype = f->filetype;
1778 }
1779
1780 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1781 __f->lock = f->lock;
1782 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1783 __f->rwlock = f->rwlock;
1784
1785 td->files[i] = __f;
1786 }
1787}
1788
1789/*
1790 * Returns the index that matches the filename, or -1 if not there
1791 */
1792int get_fileno(struct thread_data *td, const char *fname)
1793{
1794 struct fio_file *f;
1795 unsigned int i;
1796
1797 for_each_file(td, f, i)
1798 if (!strcmp(f->file_name, fname))
1799 return i;
1800
1801 return -1;
1802}
1803
1804/*
1805 * For log usage, where we add/open/close files automatically
1806 */
1807void free_release_files(struct thread_data *td)
1808{
1809 close_files(td);
1810 td->o.nr_files = 0;
1811 td->o.open_files = 0;
1812 td->files_index = 0;
1813 td->nr_normal_files = 0;
1814}
1815
1816void fio_file_reset(struct thread_data *td, struct fio_file *f)
1817{
1818 int i;
1819
1820 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1821 f->last_pos[i] = f->file_offset;
1822 f->last_start[i] = -1ULL;
1823 }
1824
1825 if (fio_file_axmap(f))
1826 axmap_reset(f->io_axmap);
1827 else if (fio_file_lfsr(f))
1828 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1829}
1830
1831bool fio_files_done(struct thread_data *td)
1832{
1833 struct fio_file *f;
1834 unsigned int i;
1835
1836 for_each_file(td, f, i)
1837 if (!fio_file_done(f))
1838 return false;
1839
1840 return true;
1841}
1842
1843/* free memory used in initialization phase only */
1844void filesetup_mem_free(void)
1845{
1846 free_already_allocated();
1847}
fio - Flexible IO Tester