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Makefile: Link to the system logging library on Android
[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 <libgen.h>
7#include <sys/stat.h>
8
9#include "fio.h"
10#include "smalloc.h"
11#include "filehash.h"
12#include "options.h"
13#include "os/os.h"
14#include "hash.h"
15#include "lib/axmap.h"
16#include "rwlock.h"
17#include "zbd.h"
18
19#ifdef CONFIG_LINUX_FALLOCATE
20#include <linux/falloc.h>
21#endif
22
23static FLIST_HEAD(filename_list);
24
25/*
26 * List entry for filename_list
27 */
28struct file_name {
29 struct flist_head list;
30 char *filename;
31};
32
33static inline void clear_error(struct thread_data *td)
34{
35 td->error = 0;
36 td->verror[0] = '\0';
37}
38
39static int native_fallocate(struct thread_data *td, struct fio_file *f)
40{
41 bool success;
42
43 success = fio_fallocate(f, 0, f->real_file_size);
44 dprint(FD_FILE, "native fallocate of file %s size %llu was "
45 "%ssuccessful\n", f->file_name,
46 (unsigned long long) f->real_file_size,
47 !success ? "un": "");
48
49 if (success)
50 return false;
51
52 if (errno == ENOSYS)
53 dprint(FD_FILE, "native fallocate is not implemented\n");
54
55 return true;
56}
57
58static void fallocate_file(struct thread_data *td, struct fio_file *f)
59{
60 if (td->o.fill_device)
61 return;
62
63 switch (td->o.fallocate_mode) {
64 case FIO_FALLOCATE_NATIVE:
65 native_fallocate(td, f);
66 break;
67 case FIO_FALLOCATE_NONE:
68 break;
69#ifdef CONFIG_POSIX_FALLOCATE
70 case FIO_FALLOCATE_POSIX: {
71 int r;
72
73 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
74 f->file_name,
75 (unsigned long long) f->real_file_size);
76
77 r = posix_fallocate(f->fd, 0, f->real_file_size);
78 if (r > 0)
79 log_err("fio: posix_fallocate fails: %s\n", strerror(r));
80 break;
81 }
82#endif /* CONFIG_POSIX_FALLOCATE */
83#ifdef CONFIG_LINUX_FALLOCATE
84 case FIO_FALLOCATE_KEEP_SIZE: {
85 int r;
86
87 dprint(FD_FILE, "fallocate(FALLOC_FL_KEEP_SIZE) "
88 "file %s size %llu\n", f->file_name,
89 (unsigned long long) f->real_file_size);
90
91 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0, f->real_file_size);
92 if (r != 0)
93 td_verror(td, errno, "fallocate");
94
95 break;
96 }
97#endif /* CONFIG_LINUX_FALLOCATE */
98 default:
99 log_err("fio: unknown fallocate mode: %d\n", td->o.fallocate_mode);
100 assert(0);
101 }
102}
103
104/*
105 * Leaves f->fd open on success, caller must close
106 */
107static int extend_file(struct thread_data *td, struct fio_file *f)
108{
109 int new_layout = 0, unlink_file = 0, flags;
110 unsigned long long left;
111 unsigned long long bs;
112 char *b = NULL;
113
114 if (read_only) {
115 log_err("fio: refusing extend of file due to read-only\n");
116 return 0;
117 }
118
119 /*
120 * check if we need to lay the file out complete again. fio
121 * does that for operations involving reads, or for writes
122 * where overwrite is set
123 */
124 if (td_read(td) ||
125 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
126 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
127 new_layout = 1;
128 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
129 unlink_file = 1;
130
131 if (unlink_file || new_layout) {
132 int ret;
133
134 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
135
136 ret = td_io_unlink_file(td, f);
137 if (ret != 0 && ret != ENOENT) {
138 td_verror(td, errno, "unlink");
139 return 1;
140 }
141 }
142
143 flags = O_WRONLY;
144 if (td->o.allow_create)
145 flags |= O_CREAT;
146 if (new_layout)
147 flags |= O_TRUNC;
148
149#ifdef WIN32
150 flags |= _O_BINARY;
151#endif
152
153 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
154 f->fd = open(f->file_name, flags, 0644);
155 if (f->fd < 0) {
156 int err = errno;
157
158 if (err == ENOENT && !td->o.allow_create)
159 log_err("fio: file creation disallowed by "
160 "allow_file_create=0\n");
161 else
162 td_verror(td, err, "open");
163 return 1;
164 }
165
166 fallocate_file(td, f);
167
168 /*
169 * If our jobs don't require regular files initially, we're done.
170 */
171 if (!new_layout)
172 goto done;
173
174 /*
175 * The size will be -1ULL when fill_device is used, so don't truncate
176 * or fallocate this file, just write it
177 */
178 if (!td->o.fill_device) {
179 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
180 (unsigned long long) f->real_file_size);
181 if (ftruncate(f->fd, f->real_file_size) == -1) {
182 if (errno != EFBIG) {
183 td_verror(td, errno, "ftruncate");
184 goto err;
185 }
186 }
187 }
188
189 left = f->real_file_size;
190 bs = td->o.max_bs[DDIR_WRITE];
191 if (bs > left)
192 bs = left;
193
194 b = malloc(bs);
195 if (!b) {
196 td_verror(td, errno, "malloc");
197 goto err;
198 }
199
200 while (left && !td->terminate) {
201 ssize_t r;
202
203 if (bs > left)
204 bs = left;
205
206 fill_io_buffer(td, b, bs, bs);
207
208 r = write(f->fd, b, bs);
209
210 if (r > 0) {
211 left -= r;
212 continue;
213 } else {
214 if (r < 0) {
215 int __e = errno;
216
217 if (__e == ENOSPC) {
218 if (td->o.fill_device)
219 break;
220 log_info("fio: ENOSPC on laying out "
221 "file, stopping\n");
222 break;
223 }
224 td_verror(td, errno, "write");
225 } else
226 td_verror(td, EIO, "write");
227
228 break;
229 }
230 }
231
232 if (td->terminate) {
233 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
234 td_io_unlink_file(td, f);
235 } else if (td->o.create_fsync) {
236 if (fsync(f->fd) < 0) {
237 td_verror(td, errno, "fsync");
238 goto err;
239 }
240 }
241 if (td->o.fill_device && !td_write(td)) {
242 fio_file_clear_size_known(f);
243 if (td_io_get_file_size(td, f))
244 goto err;
245 if (f->io_size > f->real_file_size)
246 f->io_size = f->real_file_size;
247 }
248
249 free(b);
250done:
251 return 0;
252err:
253 close(f->fd);
254 f->fd = -1;
255 if (b)
256 free(b);
257 return 1;
258}
259
260static bool pre_read_file(struct thread_data *td, struct fio_file *f)
261{
262 int r, did_open = 0, old_runstate;
263 unsigned long long left;
264 unsigned long long bs;
265 bool ret = true;
266 char *b;
267
268 if (td_ioengine_flagged(td, FIO_PIPEIO) ||
269 td_ioengine_flagged(td, FIO_NOIO))
270 return true;
271
272 if (f->filetype == FIO_TYPE_CHAR)
273 return true;
274
275 if (!fio_file_open(f)) {
276 if (td->io_ops->open_file(td, f)) {
277 log_err("fio: cannot pre-read, failed to open file\n");
278 return false;
279 }
280 did_open = 1;
281 }
282
283 old_runstate = td_bump_runstate(td, TD_PRE_READING);
284
285 left = f->io_size;
286 bs = td->o.max_bs[DDIR_READ];
287 if (bs > left)
288 bs = left;
289
290 b = malloc(bs);
291 if (!b) {
292 td_verror(td, errno, "malloc");
293 ret = false;
294 goto error;
295 }
296 memset(b, 0, bs);
297
298 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
299 td_verror(td, errno, "lseek");
300 log_err("fio: failed to lseek pre-read file\n");
301 ret = false;
302 goto error;
303 }
304
305 while (left && !td->terminate) {
306 if (bs > left)
307 bs = left;
308
309 r = read(f->fd, b, bs);
310
311 if (r == (int) bs) {
312 left -= bs;
313 continue;
314 } else {
315 td_verror(td, EIO, "pre_read");
316 break;
317 }
318 }
319
320error:
321 td_restore_runstate(td, old_runstate);
322
323 if (did_open)
324 td->io_ops->close_file(td, f);
325
326 free(b);
327 return ret;
328}
329
330unsigned long long get_rand_file_size(struct thread_data *td)
331{
332 unsigned long long ret, sized;
333 uint64_t frand_max;
334 uint64_t r;
335
336 frand_max = rand_max(&td->file_size_state);
337 r = __rand(&td->file_size_state);
338 sized = td->o.file_size_high - td->o.file_size_low;
339 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
340 ret += td->o.file_size_low;
341 ret -= (ret % td->o.rw_min_bs);
342 return ret;
343}
344
345static int file_size(struct thread_data *td, struct fio_file *f)
346{
347 struct stat st;
348
349 if (stat(f->file_name, &st) == -1) {
350 td_verror(td, errno, "fstat");
351 return 1;
352 }
353
354 f->real_file_size = st.st_size;
355 return 0;
356}
357
358static int bdev_size(struct thread_data *td, struct fio_file *f)
359{
360 unsigned long long bytes = 0;
361 int r;
362
363 if (td->io_ops->open_file(td, f)) {
364 log_err("fio: failed opening blockdev %s for size check\n",
365 f->file_name);
366 return 1;
367 }
368
369 r = blockdev_size(f, &bytes);
370 if (r) {
371 td_verror(td, r, "blockdev_size");
372 goto err;
373 }
374
375 if (!bytes) {
376 log_err("%s: zero sized block device?\n", f->file_name);
377 goto err;
378 }
379
380 f->real_file_size = bytes;
381 td->io_ops->close_file(td, f);
382 return 0;
383err:
384 td->io_ops->close_file(td, f);
385 return 1;
386}
387
388static int char_size(struct thread_data *td, struct fio_file *f)
389{
390#ifdef FIO_HAVE_CHARDEV_SIZE
391 unsigned long long bytes = 0;
392 int r;
393
394 if (td->io_ops->open_file(td, f)) {
395 log_err("fio: failed opening chardev %s for size check\n",
396 f->file_name);
397 return 1;
398 }
399
400 r = chardev_size(f, &bytes);
401 if (r) {
402 td_verror(td, r, "chardev_size");
403 goto err;
404 }
405
406 if (!bytes) {
407 log_err("%s: zero sized char device?\n", f->file_name);
408 goto err;
409 }
410
411 f->real_file_size = bytes;
412 td->io_ops->close_file(td, f);
413 return 0;
414err:
415 td->io_ops->close_file(td, f);
416 return 1;
417#else
418 f->real_file_size = -1ULL;
419 return 0;
420#endif
421}
422
423static int get_file_size(struct thread_data *td, struct fio_file *f)
424{
425 int ret = 0;
426
427 if (fio_file_size_known(f))
428 return 0;
429
430 if (f->filetype == FIO_TYPE_FILE)
431 ret = file_size(td, f);
432 else if (f->filetype == FIO_TYPE_BLOCK)
433 ret = bdev_size(td, f);
434 else if (f->filetype == FIO_TYPE_CHAR)
435 ret = char_size(td, f);
436 else {
437 f->real_file_size = -1;
438 log_info("%s: failed to get file size of %s\n", td->o.name,
439 f->file_name);
440 return 1; /* avoid offset extends end error message */
441 }
442
443 /*
444 * Leave ->real_file_size with 0 since it could be expectation
445 * of initial setup for regular files.
446 */
447 if (ret)
448 return ret;
449
450 /*
451 * ->file_offset normally hasn't been initialized yet, so this
452 * is basically always false unless ->real_file_size is -1, but
453 * if ->real_file_size is -1 this message doesn't make sense.
454 * As a result, this message is basically useless.
455 */
456 if (f->file_offset > f->real_file_size) {
457 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
458 (unsigned long long) f->file_offset,
459 (unsigned long long) f->real_file_size);
460 return 1;
461 }
462
463 fio_file_set_size_known(f);
464 return 0;
465}
466
467static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
468 unsigned long long off,
469 unsigned long long len)
470{
471 int errval = 0, ret = 0;
472
473#ifdef CONFIG_ESX
474 return 0;
475#endif
476
477 if (len == -1ULL)
478 len = f->io_size;
479 if (off == -1ULL)
480 off = f->file_offset;
481
482 if (len == -1ULL || off == -1ULL)
483 return 0;
484
485 if (td->io_ops->invalidate) {
486 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
487 f->file_name);
488 ret = td->io_ops->invalidate(td, f);
489 if (ret < 0)
490 errval = -ret;
491 } else if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
492 dprint(FD_IO, "invalidate not supported by ioengine %s\n",
493 td->io_ops->name);
494 } else if (f->filetype == FIO_TYPE_FILE) {
495 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
496 f->file_name, off, len);
497 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
498 if (ret)
499 errval = ret;
500 } else if (f->filetype == FIO_TYPE_BLOCK) {
501 int retry_count = 0;
502
503 dprint(FD_IO, "drop page cache %s\n", f->file_name);
504 ret = blockdev_invalidate_cache(f);
505 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
506 /*
507 * Linux multipath devices reject ioctl while
508 * the maps are being updated. That window can
509 * last tens of milliseconds; we'll try up to
510 * a quarter of a second.
511 */
512 usleep(10000);
513 ret = blockdev_invalidate_cache(f);
514 }
515 if (ret < 0 && errno == EACCES && geteuid()) {
516 if (!fio_did_warn(FIO_WARN_ROOT_FLUSH)) {
517 log_err("fio: only root may flush block "
518 "devices. Cache flush bypassed!\n");
519 }
520 }
521 if (ret < 0)
522 errval = errno;
523 } else if (f->filetype == FIO_TYPE_CHAR ||
524 f->filetype == FIO_TYPE_PIPE) {
525 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
526 }
527
528 /*
529 * Cache flushing isn't a fatal condition, and we know it will
530 * happen on some platforms where we don't have the proper
531 * function to flush eg block device caches. So just warn and
532 * continue on our way.
533 */
534 if (errval)
535 log_info("fio: cache invalidation of %s failed: %s\n",
536 f->file_name, strerror(errval));
537
538 return 0;
539
540}
541
542int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
543{
544 if (!fio_file_open(f))
545 return 0;
546
547 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
548}
549
550int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
551{
552 int ret = 0;
553
554 dprint(FD_FILE, "fd close %s\n", f->file_name);
555
556 remove_file_hash(f);
557
558 if (close(f->fd) < 0)
559 ret = errno;
560
561 f->fd = -1;
562
563 if (f->shadow_fd != -1) {
564 close(f->shadow_fd);
565 f->shadow_fd = -1;
566 }
567
568 f->engine_pos = 0;
569 return ret;
570}
571
572int file_lookup_open(struct fio_file *f, int flags)
573{
574 struct fio_file *__f;
575 int from_hash;
576
577 __f = lookup_file_hash(f->file_name);
578 if (__f) {
579 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
580 f->lock = __f->lock;
581 from_hash = 1;
582 } else {
583 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
584 from_hash = 0;
585 }
586
587#ifdef WIN32
588 flags |= _O_BINARY;
589#endif
590
591 f->fd = open(f->file_name, flags, 0600);
592 return from_hash;
593}
594
595static int file_close_shadow_fds(struct thread_data *td)
596{
597 struct fio_file *f;
598 int num_closed = 0;
599 unsigned int i;
600
601 for_each_file(td, f, i) {
602 if (f->shadow_fd == -1)
603 continue;
604
605 close(f->shadow_fd);
606 f->shadow_fd = -1;
607 num_closed++;
608 }
609
610 return num_closed;
611}
612
613int generic_open_file(struct thread_data *td, struct fio_file *f)
614{
615 int is_std = 0;
616 int flags = 0;
617 int from_hash = 0;
618
619 dprint(FD_FILE, "fd open %s\n", f->file_name);
620
621 if (!strcmp(f->file_name, "-")) {
622 if (td_rw(td)) {
623 log_err("fio: can't read/write to stdin/out\n");
624 return 1;
625 }
626 is_std = 1;
627
628 /*
629 * move output logging to stderr, if we are writing to stdout
630 */
631 if (td_write(td))
632 f_out = stderr;
633 }
634
635 if (td_trim(td))
636 goto skip_flags;
637 if (td->o.odirect)
638 flags |= OS_O_DIRECT;
639 if (td->o.oatomic) {
640 if (!FIO_O_ATOMIC) {
641 td_verror(td, EINVAL, "OS does not support atomic IO");
642 return 1;
643 }
644 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
645 }
646 if (td->o.sync_io)
647 flags |= O_SYNC;
648 if (td->o.create_on_open && td->o.allow_create)
649 flags |= O_CREAT;
650skip_flags:
651 if (f->filetype != FIO_TYPE_FILE)
652 flags |= FIO_O_NOATIME;
653
654open_again:
655 if (td_write(td)) {
656 if (!read_only)
657 flags |= O_RDWR;
658
659 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
660 flags |= O_CREAT;
661
662 if (is_std)
663 f->fd = dup(STDOUT_FILENO);
664 else
665 from_hash = file_lookup_open(f, flags);
666 } else if (td_read(td)) {
667 if (f->filetype == FIO_TYPE_CHAR && !read_only)
668 flags |= O_RDWR;
669 else
670 flags |= O_RDONLY;
671
672 if (is_std)
673 f->fd = dup(STDIN_FILENO);
674 else
675 from_hash = file_lookup_open(f, flags);
676 } else if (td_trim(td)) {
677 assert(!td_rw(td)); /* should have matched above */
678 if (!read_only)
679 flags |= O_RDWR;
680 from_hash = file_lookup_open(f, flags);
681 }
682
683 if (f->fd == -1) {
684 char buf[FIO_VERROR_SIZE];
685 int __e = errno;
686
687 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
688 flags &= ~FIO_O_NOATIME;
689 goto open_again;
690 }
691 if (__e == EMFILE && file_close_shadow_fds(td))
692 goto open_again;
693
694 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
695
696 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
697 log_err("fio: looks like your file system does not " \
698 "support direct=1/buffered=0\n");
699 }
700
701 td_verror(td, __e, buf);
702 return 1;
703 }
704
705 if (!from_hash && f->fd != -1) {
706 if (add_file_hash(f)) {
707 int fio_unused ret;
708
709 /*
710 * Stash away descriptor for later close. This is to
711 * work-around a "feature" on Linux, where a close of
712 * an fd that has been opened for write will trigger
713 * udev to call blkid to check partitions, fs id, etc.
714 * That pollutes the device cache, which can slow down
715 * unbuffered accesses.
716 */
717 if (f->shadow_fd == -1)
718 f->shadow_fd = f->fd;
719 else {
720 /*
721 * OK to ignore, we haven't done anything
722 * with it
723 */
724 ret = generic_close_file(td, f);
725 }
726 goto open_again;
727 }
728 }
729
730 return 0;
731}
732
733/*
734 * This function i.e. get_file_size() is the default .get_file_size
735 * implementation of majority of I/O engines.
736 */
737int generic_get_file_size(struct thread_data *td, struct fio_file *f)
738{
739 return get_file_size(td, f);
740}
741
742/*
743 * open/close all files, so that ->real_file_size gets set
744 */
745static int get_file_sizes(struct thread_data *td)
746{
747 struct fio_file *f;
748 unsigned int i;
749 int err = 0;
750
751 for_each_file(td, f, i) {
752 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
753 f->file_name);
754
755 if (td_io_get_file_size(td, f)) {
756 if (td->error != ENOENT) {
757 log_err("%s\n", td->verror);
758 err = 1;
759 break;
760 }
761 clear_error(td);
762 }
763
764 /*
765 * There are corner cases where we end up with -1 for
766 * ->real_file_size due to unsupported file type, etc.
767 * We then just set to size option value divided by number
768 * of files, similar to the way file ->io_size is set.
769 * stat(2) failure doesn't set ->real_file_size to -1.
770 */
771 if (f->real_file_size == -1ULL && td->o.size)
772 f->real_file_size = td->o.size / td->o.nr_files;
773 }
774
775 return err;
776}
777
778struct fio_mount {
779 struct flist_head list;
780 const char *base;
781 char __base[256];
782 unsigned int key;
783};
784
785/*
786 * Get free number of bytes for each file on each unique mount.
787 */
788static unsigned long long get_fs_free_counts(struct thread_data *td)
789{
790 struct flist_head *n, *tmp;
791 unsigned long long ret = 0;
792 struct fio_mount *fm;
793 FLIST_HEAD(list);
794 struct fio_file *f;
795 unsigned int i;
796
797 for_each_file(td, f, i) {
798 struct stat sb;
799 char buf[256];
800
801 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
802 if (f->real_file_size != -1ULL)
803 ret += f->real_file_size;
804 continue;
805 } else if (f->filetype != FIO_TYPE_FILE)
806 continue;
807
808 snprintf(buf, ARRAY_SIZE(buf), "%s", f->file_name);
809
810 if (stat(buf, &sb) < 0) {
811 if (errno != ENOENT)
812 break;
813 strcpy(buf, ".");
814 if (stat(buf, &sb) < 0)
815 break;
816 }
817
818 fm = NULL;
819 flist_for_each(n, &list) {
820 fm = flist_entry(n, struct fio_mount, list);
821 if (fm->key == sb.st_dev)
822 break;
823
824 fm = NULL;
825 }
826
827 if (fm)
828 continue;
829
830 fm = calloc(1, sizeof(*fm));
831 snprintf(fm->__base, ARRAY_SIZE(fm->__base), "%s", buf);
832 fm->base = basename(fm->__base);
833 fm->key = sb.st_dev;
834 flist_add(&fm->list, &list);
835 }
836
837 flist_for_each_safe(n, tmp, &list) {
838 unsigned long long sz;
839
840 fm = flist_entry(n, struct fio_mount, list);
841 flist_del(&fm->list);
842
843 sz = get_fs_free_size(fm->base);
844 if (sz && sz != -1ULL)
845 ret += sz;
846
847 free(fm);
848 }
849
850 return ret;
851}
852
853uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
854{
855 bool align = false;
856 struct thread_options *o = &td->o;
857 unsigned long long align_bs;
858 unsigned long long offset;
859 unsigned long long increment;
860
861 if (o->file_append && f->filetype == FIO_TYPE_FILE)
862 return f->real_file_size;
863
864 if (o->offset_increment_percent) {
865 assert(!o->offset_increment);
866 increment = o->offset_increment_percent * f->real_file_size / 100;
867 align = true;
868 } else
869 increment = o->offset_increment;
870
871 if (o->start_offset_percent > 0) {
872 /* calculate the raw offset */
873 offset = (f->real_file_size * o->start_offset_percent / 100) +
874 (td->subjob_number * increment);
875
876 align = true;
877 } else {
878 /* start_offset_percent not set */
879 offset = o->start_offset +
880 td->subjob_number * increment;
881 }
882
883 if (align) {
884 /*
885 * if offset_align is provided, use it
886 */
887 if (fio_option_is_set(o, start_offset_align)) {
888 align_bs = o->start_offset_align;
889 } else {
890 /* else take the minimum block size */
891 align_bs = td_min_bs(td);
892 }
893
894 /*
895 * block align the offset at the next available boundary at
896 * ceiling(offset / align_bs) * align_bs
897 */
898 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
899 }
900
901 return offset;
902}
903
904static bool create_work_dirs(struct thread_data *td, const char *fname)
905{
906 char path[PATH_MAX];
907 char *start, *end;
908
909 if (td->o.directory) {
910 snprintf(path, PATH_MAX, "%s%c%s", td->o.directory,
911 FIO_OS_PATH_SEPARATOR, fname);
912 start = strstr(path, fname);
913 } else {
914 snprintf(path, PATH_MAX, "%s", fname);
915 start = path;
916 }
917
918 end = start;
919 while ((end = strchr(end, FIO_OS_PATH_SEPARATOR)) != NULL) {
920 if (end == start)
921 break;
922 *end = '\0';
923 errno = 0;
924#ifdef CONFIG_HAVE_MKDIR_TWO
925 if (mkdir(path, 0600) && errno != EEXIST) {
926#else
927 if (mkdir(path) && errno != EEXIST) {
928#endif
929 log_err("fio: failed to create dir (%s): %d\n",
930 start, errno);
931 return false;
932 }
933 *end = FIO_OS_PATH_SEPARATOR;
934 end++;
935 }
936 td->flags |= TD_F_DIRS_CREATED;
937 return true;
938}
939
940/*
941 * Open the files and setup files sizes, creating files if necessary.
942 */
943int setup_files(struct thread_data *td)
944{
945 unsigned long long total_size, extend_size;
946 struct thread_options *o = &td->o;
947 struct fio_file *f;
948 unsigned int i, nr_fs_extra = 0;
949 int err = 0, need_extend;
950 int old_state;
951 const unsigned long long bs = td_min_bs(td);
952 uint64_t fs = 0;
953
954 dprint(FD_FILE, "setup files\n");
955
956 old_state = td_bump_runstate(td, TD_SETTING_UP);
957
958 for_each_file(td, f, i) {
959 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
960 strchr(f->file_name, FIO_OS_PATH_SEPARATOR) &&
961 !(td->flags & TD_F_DIRS_CREATED) &&
962 !create_work_dirs(td, f->file_name))
963 goto err_out;
964 }
965
966 /*
967 * Find out physical size of files or devices for this thread,
968 * before we determine I/O size and range of our targets.
969 * If ioengine defines a setup() method, it's responsible for
970 * opening the files and setting f->real_file_size to indicate
971 * the valid range for that file.
972 */
973 if (td->io_ops->setup)
974 err = td->io_ops->setup(td);
975 else
976 err = get_file_sizes(td);
977
978 if (err)
979 goto err_out;
980
981 if (o->read_iolog_file)
982 goto done;
983
984 /*
985 * check sizes. if the files/devices do not exist and the size
986 * isn't passed to fio, abort.
987 */
988 total_size = 0;
989 for_each_file(td, f, i) {
990 f->fileno = i;
991 if (f->real_file_size == -1ULL)
992 total_size = -1ULL;
993 else
994 total_size += f->real_file_size;
995 }
996
997 if (o->fill_device)
998 td->fill_device_size = get_fs_free_counts(td);
999
1000 /*
1001 * device/file sizes are zero and no size given, punt
1002 */
1003 if ((!total_size || total_size == -1ULL) && !o->size &&
1004 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
1005 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
1006 log_err("%s: you need to specify size=\n", o->name);
1007 td_verror(td, EINVAL, "total_file_size");
1008 goto err_out;
1009 }
1010
1011 /*
1012 * Calculate per-file size and potential extra size for the
1013 * first files, if needed (i.e. if we don't have a fixed size).
1014 */
1015 if (!o->file_size_low && o->nr_files) {
1016 uint64_t all_fs;
1017
1018 fs = o->size / o->nr_files;
1019 all_fs = fs * o->nr_files;
1020
1021 if (all_fs < o->size)
1022 nr_fs_extra = (o->size - all_fs) / bs;
1023 }
1024
1025 /*
1026 * now file sizes are known, so we can set ->io_size. if size= is
1027 * not given, ->io_size is just equal to ->real_file_size. if size
1028 * is given, ->io_size is size / nr_files.
1029 */
1030 extend_size = total_size = 0;
1031 need_extend = 0;
1032 for_each_file(td, f, i) {
1033 f->file_offset = get_start_offset(td, f);
1034
1035 /*
1036 * Update ->io_size depending on options specified.
1037 * ->file_size_low being 0 means filesize option isn't set.
1038 * Non zero ->file_size_low equals ->file_size_high means
1039 * filesize option is set in a fixed size format.
1040 * Non zero ->file_size_low not equals ->file_size_high means
1041 * filesize option is set in a range format.
1042 */
1043 if (!o->file_size_low) {
1044 /*
1045 * no file size or range given, file size is equal to
1046 * total size divided by number of files. If the size
1047 * doesn't divide nicely with the min blocksize,
1048 * make the first files bigger.
1049 */
1050 f->io_size = fs;
1051 if (nr_fs_extra) {
1052 nr_fs_extra--;
1053 f->io_size += bs;
1054 }
1055
1056 /*
1057 * We normally don't come here for regular files, but
1058 * if the result is 0 for a regular file, set it to the
1059 * real file size. This could be size of the existing
1060 * one if it already exists, but otherwise will be set
1061 * to 0. A new file won't be created because
1062 * ->io_size + ->file_offset equals ->real_file_size.
1063 */
1064 if (!f->io_size) {
1065 if (f->file_offset > f->real_file_size)
1066 goto err_offset;
1067 f->io_size = f->real_file_size - f->file_offset;
1068 if (!f->io_size)
1069 log_info("fio: file %s may be ignored\n",
1070 f->file_name);
1071 }
1072 } else if (f->real_file_size < o->file_size_low ||
1073 f->real_file_size > o->file_size_high) {
1074 if (f->file_offset > o->file_size_low)
1075 goto err_offset;
1076 /*
1077 * file size given. if it's fixed, use that. if it's a
1078 * range, generate a random size in-between.
1079 */
1080 if (o->file_size_low == o->file_size_high)
1081 f->io_size = o->file_size_low - f->file_offset;
1082 else {
1083 f->io_size = get_rand_file_size(td)
1084 - f->file_offset;
1085 }
1086 } else
1087 f->io_size = f->real_file_size - f->file_offset;
1088
1089 if (f->io_size == -1ULL)
1090 total_size = -1ULL;
1091 else {
1092 if (o->size_percent && o->size_percent != 100) {
1093 uint64_t file_size;
1094
1095 file_size = f->io_size + f->file_offset;
1096 f->io_size = (file_size *
1097 o->size_percent) / 100;
1098 if (f->io_size > (file_size - f->file_offset))
1099 f->io_size = file_size - f->file_offset;
1100
1101 f->io_size -= (f->io_size % td_min_bs(td));
1102 }
1103 total_size += f->io_size;
1104 }
1105
1106 if (f->filetype == FIO_TYPE_FILE &&
1107 (f->io_size + f->file_offset) > f->real_file_size) {
1108 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1109 !o->create_on_open) {
1110 need_extend++;
1111 extend_size += (f->io_size + f->file_offset);
1112 fio_file_set_extend(f);
1113 } else if (!td_ioengine_flagged(td, FIO_DISKLESSIO) ||
1114 (td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1115 td_ioengine_flagged(td, FIO_FAKEIO)))
1116 f->real_file_size = f->io_size + f->file_offset;
1117 }
1118 }
1119
1120 if (td->o.block_error_hist) {
1121 int len;
1122
1123 assert(td->o.nr_files == 1); /* checked in fixup_options */
1124 f = td->files[0];
1125 len = f->io_size / td->o.bs[DDIR_TRIM];
1126 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1127 log_err("fio: cannot calculate block histogram with "
1128 "%d trim blocks, maximum %d\n",
1129 len, MAX_NR_BLOCK_INFOS);
1130 td_verror(td, EINVAL, "block_error_hist");
1131 goto err_out;
1132 }
1133
1134 td->ts.nr_block_infos = len;
1135 for (i = 0; i < len; i++)
1136 td->ts.block_infos[i] =
1137 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1138 } else
1139 td->ts.nr_block_infos = 0;
1140
1141 if (!o->size || (total_size && o->size > total_size))
1142 o->size = total_size;
1143
1144 if (o->size < td_min_bs(td)) {
1145 log_err("fio: blocksize too large for data set\n");
1146 goto err_out;
1147 }
1148
1149 /*
1150 * See if we need to extend some files, typically needed when our
1151 * target regular files don't exist yet, but our jobs require them
1152 * initially due to read I/Os.
1153 */
1154 if (need_extend) {
1155 temp_stall_ts = 1;
1156 if (output_format & FIO_OUTPUT_NORMAL) {
1157 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1158 o->name,
1159 need_extend > 1 ? "s" : "",
1160 need_extend,
1161 need_extend > 1 ? "s" : "",
1162 need_extend > 1 ? "total " : "",
1163 extend_size >> 20);
1164 }
1165
1166 for_each_file(td, f, i) {
1167 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1168
1169 if (!fio_file_extend(f))
1170 continue;
1171
1172 assert(f->filetype == FIO_TYPE_FILE);
1173 fio_file_clear_extend(f);
1174 if (!o->fill_device) {
1175 old_len = f->real_file_size;
1176 extend_len = f->io_size + f->file_offset -
1177 old_len;
1178 }
1179 f->real_file_size = (f->io_size + f->file_offset);
1180 err = extend_file(td, f);
1181 if (err)
1182 break;
1183
1184 err = __file_invalidate_cache(td, f, old_len,
1185 extend_len);
1186
1187 /*
1188 * Shut up static checker
1189 */
1190 if (f->fd != -1)
1191 close(f->fd);
1192
1193 f->fd = -1;
1194 if (err)
1195 break;
1196 }
1197 temp_stall_ts = 0;
1198 }
1199
1200 if (err)
1201 goto err_out;
1202
1203 /*
1204 * iolog already set the total io size, if we read back
1205 * stored entries.
1206 */
1207 if (!o->read_iolog_file) {
1208 if (o->io_size)
1209 td->total_io_size = o->io_size * o->loops;
1210 else
1211 td->total_io_size = o->size * o->loops;
1212 }
1213
1214done:
1215 if (o->create_only)
1216 td->done = 1;
1217
1218 td_restore_runstate(td, old_state);
1219
1220 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1221 err = zbd_init(td);
1222 if (err)
1223 goto err_out;
1224 }
1225 return 0;
1226
1227err_offset:
1228 log_err("%s: you need to specify valid offset=\n", o->name);
1229err_out:
1230 td_restore_runstate(td, old_state);
1231 return 1;
1232}
1233
1234bool pre_read_files(struct thread_data *td)
1235{
1236 struct fio_file *f;
1237 unsigned int i;
1238
1239 dprint(FD_FILE, "pre_read files\n");
1240
1241 for_each_file(td, f, i) {
1242 if (!pre_read_file(td, f))
1243 return false;
1244 }
1245
1246 return true;
1247}
1248
1249static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1250{
1251 unsigned int range_size, seed;
1252 uint64_t nranges;
1253 uint64_t fsize;
1254
1255 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1256 fsize = min(f->real_file_size, f->io_size);
1257
1258 nranges = (fsize + range_size - 1ULL) / range_size;
1259
1260 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1261 if (!td->o.rand_repeatable)
1262 seed = td->rand_seeds[4];
1263
1264 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1265 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1266 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1267 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1268 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1269 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1270}
1271
1272static bool init_rand_distribution(struct thread_data *td)
1273{
1274 struct fio_file *f;
1275 unsigned int i;
1276 int state;
1277
1278 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1279 return false;
1280
1281 state = td_bump_runstate(td, TD_SETTING_UP);
1282
1283 for_each_file(td, f, i)
1284 __init_rand_distribution(td, f);
1285
1286 td_restore_runstate(td, state);
1287 return true;
1288}
1289
1290/*
1291 * Check if the number of blocks exceeds the randomness capability of
1292 * the selected generator. Tausworthe is 32-bit, the others are fullly
1293 * 64-bit capable.
1294 */
1295static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1296 uint64_t blocks)
1297{
1298 if (blocks <= FRAND32_MAX)
1299 return 0;
1300 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1301 return 0;
1302
1303 /*
1304 * If the user hasn't specified a random generator, switch
1305 * to tausworthe64 with informational warning. If the user did
1306 * specify one, just warn.
1307 */
1308 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1309 f->file_name);
1310
1311 if (!fio_option_is_set(&td->o, random_generator)) {
1312 log_info("fio: Switching to tausworthe64. Use the "
1313 "random_generator= option to get rid of this "
1314 "warning.\n");
1315 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1316 return 0;
1317 }
1318
1319 /*
1320 * Just make this information to avoid breaking scripts.
1321 */
1322 log_info("fio: Use the random_generator= option to switch to lfsr or "
1323 "tausworthe64.\n");
1324 return 0;
1325}
1326
1327bool init_random_map(struct thread_data *td)
1328{
1329 unsigned long long blocks;
1330 struct fio_file *f;
1331 unsigned int i;
1332
1333 if (init_rand_distribution(td))
1334 return true;
1335 if (!td_random(td))
1336 return true;
1337
1338 for_each_file(td, f, i) {
1339 uint64_t fsize = min(f->real_file_size, f->io_size);
1340
1341 if (td->o.zone_mode == ZONE_MODE_STRIDED)
1342 fsize = td->o.zone_range;
1343
1344 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1345
1346 if (check_rand_gen_limits(td, f, blocks))
1347 return false;
1348
1349 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1350 uint64_t seed;
1351
1352 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1353
1354 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1355 fio_file_set_lfsr(f);
1356 continue;
1357 }
1358 } else if (!td->o.norandommap) {
1359 f->io_axmap = axmap_new(blocks);
1360 if (f->io_axmap) {
1361 fio_file_set_axmap(f);
1362 continue;
1363 }
1364 } else if (td->o.norandommap)
1365 continue;
1366
1367 if (!td->o.softrandommap) {
1368 log_err("fio: failed allocating random map. If running"
1369 " a large number of jobs, try the 'norandommap'"
1370 " option or set 'softrandommap'. Or give"
1371 " a larger --alloc-size to fio.\n");
1372 return false;
1373 }
1374
1375 log_info("fio: file %s failed allocating random map. Running "
1376 "job without.\n", f->file_name);
1377 }
1378
1379 return true;
1380}
1381
1382void close_files(struct thread_data *td)
1383{
1384 struct fio_file *f;
1385 unsigned int i;
1386
1387 for_each_file(td, f, i) {
1388 if (fio_file_open(f))
1389 td_io_close_file(td, f);
1390 }
1391}
1392
1393void close_and_free_files(struct thread_data *td)
1394{
1395 struct fio_file *f;
1396 unsigned int i;
1397 bool use_free = td_ioengine_flagged(td, FIO_NOFILEHASH);
1398
1399 dprint(FD_FILE, "close files\n");
1400
1401 for_each_file(td, f, i) {
1402 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1403 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1404 td_io_unlink_file(td, f);
1405 }
1406
1407 if (fio_file_open(f))
1408 td_io_close_file(td, f);
1409
1410 remove_file_hash(f);
1411
1412 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1413 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1414 td_io_unlink_file(td, f);
1415 }
1416
1417 zbd_free_zone_info(f);
1418
1419 if (use_free)
1420 free(f->file_name);
1421 else
1422 sfree(f->file_name);
1423 f->file_name = NULL;
1424 if (fio_file_axmap(f)) {
1425 axmap_free(f->io_axmap);
1426 f->io_axmap = NULL;
1427 }
1428 if (use_free)
1429 free(f);
1430 else
1431 sfree(f);
1432 }
1433
1434 td->o.filename = NULL;
1435 free(td->files);
1436 free(td->file_locks);
1437 td->files_index = 0;
1438 td->files = NULL;
1439 td->file_locks = NULL;
1440 td->o.file_lock_mode = FILE_LOCK_NONE;
1441 td->o.nr_files = 0;
1442}
1443
1444static void get_file_type(struct fio_file *f)
1445{
1446 struct stat sb;
1447
1448 if (!strcmp(f->file_name, "-"))
1449 f->filetype = FIO_TYPE_PIPE;
1450 else
1451 f->filetype = FIO_TYPE_FILE;
1452
1453#ifdef WIN32
1454 /* \\.\ is the device namespace in Windows, where every file is
1455 * a block device */
1456 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1457 f->filetype = FIO_TYPE_BLOCK;
1458#endif
1459
1460 if (!stat(f->file_name, &sb)) {
1461 if (S_ISBLK(sb.st_mode))
1462 f->filetype = FIO_TYPE_BLOCK;
1463 else if (S_ISCHR(sb.st_mode))
1464 f->filetype = FIO_TYPE_CHAR;
1465 else if (S_ISFIFO(sb.st_mode))
1466 f->filetype = FIO_TYPE_PIPE;
1467 }
1468}
1469
1470static bool __is_already_allocated(const char *fname, bool set)
1471{
1472 struct flist_head *entry;
1473 bool ret;
1474
1475 ret = file_bloom_exists(fname, set);
1476 if (!ret)
1477 return ret;
1478
1479 flist_for_each(entry, &filename_list) {
1480 struct file_name *fn;
1481
1482 fn = flist_entry(entry, struct file_name, list);
1483
1484 if (!strcmp(fn->filename, fname))
1485 return true;
1486 }
1487
1488 return false;
1489}
1490
1491static bool is_already_allocated(const char *fname)
1492{
1493 bool ret;
1494
1495 fio_file_hash_lock();
1496 ret = __is_already_allocated(fname, false);
1497 fio_file_hash_unlock();
1498
1499 return ret;
1500}
1501
1502static void set_already_allocated(const char *fname)
1503{
1504 struct file_name *fn;
1505
1506 fn = malloc(sizeof(struct file_name));
1507 fn->filename = strdup(fname);
1508
1509 fio_file_hash_lock();
1510 if (!__is_already_allocated(fname, true)) {
1511 flist_add_tail(&fn->list, &filename_list);
1512 fn = NULL;
1513 }
1514 fio_file_hash_unlock();
1515
1516 if (fn) {
1517 free(fn->filename);
1518 free(fn);
1519 }
1520}
1521
1522static void free_already_allocated(void)
1523{
1524 struct flist_head *entry, *tmp;
1525 struct file_name *fn;
1526
1527 if (flist_empty(&filename_list))
1528 return;
1529
1530 fio_file_hash_lock();
1531 flist_for_each_safe(entry, tmp, &filename_list) {
1532 fn = flist_entry(entry, struct file_name, list);
1533 free(fn->filename);
1534 flist_del(&fn->list);
1535 free(fn);
1536 }
1537
1538 fio_file_hash_unlock();
1539}
1540
1541static struct fio_file *alloc_new_file(struct thread_data *td)
1542{
1543 struct fio_file *f;
1544
1545 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1546 f = calloc(1, sizeof(*f));
1547 else
1548 f = scalloc(1, sizeof(*f));
1549 if (!f) {
1550 assert(0);
1551 return NULL;
1552 }
1553
1554 f->fd = -1;
1555 f->shadow_fd = -1;
1556 fio_file_reset(td, f);
1557 return f;
1558}
1559
1560bool exists_and_not_regfile(const char *filename)
1561{
1562 struct stat sb;
1563
1564 if (lstat(filename, &sb) == -1)
1565 return false;
1566
1567#ifndef WIN32 /* NOT Windows */
1568 if (S_ISREG(sb.st_mode))
1569 return false;
1570#else
1571 /* \\.\ is the device namespace in Windows, where every file
1572 * is a device node */
1573 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1574 return false;
1575#endif
1576
1577 return true;
1578}
1579
1580int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1581{
1582 int cur_files = td->files_index;
1583 char file_name[PATH_MAX];
1584 struct fio_file *f;
1585 int len = 0;
1586
1587 dprint(FD_FILE, "add file %s\n", fname);
1588
1589 if (td->o.directory)
1590 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1591 td->o.unique_filename);
1592
1593 sprintf(file_name + len, "%s", fname);
1594
1595 /* clean cloned siblings using existing files */
1596 if (numjob && is_already_allocated(file_name) &&
1597 !exists_and_not_regfile(fname))
1598 return 0;
1599
1600 f = alloc_new_file(td);
1601
1602 if (td->files_size <= td->files_index) {
1603 unsigned int new_size = td->o.nr_files + 1;
1604
1605 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1606
1607 td->files = realloc(td->files, new_size * sizeof(f));
1608 if (td->files == NULL) {
1609 log_err("fio: realloc OOM\n");
1610 assert(0);
1611 }
1612 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1613 td->file_locks = realloc(td->file_locks, new_size);
1614 if (!td->file_locks) {
1615 log_err("fio: realloc OOM\n");
1616 assert(0);
1617 }
1618 td->file_locks[cur_files] = FILE_LOCK_NONE;
1619 }
1620 td->files_size = new_size;
1621 }
1622 td->files[cur_files] = f;
1623 f->fileno = cur_files;
1624
1625 /*
1626 * init function, io engine may not be loaded yet
1627 */
1628 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1629 f->real_file_size = -1ULL;
1630
1631 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1632 f->file_name = strdup(file_name);
1633 else
1634 f->file_name = smalloc_strdup(file_name);
1635
1636 /* can't handle smalloc failure from here */
1637 assert(f->file_name);
1638
1639 get_file_type(f);
1640
1641 switch (td->o.file_lock_mode) {
1642 case FILE_LOCK_NONE:
1643 break;
1644 case FILE_LOCK_READWRITE:
1645 f->rwlock = fio_rwlock_init();
1646 break;
1647 case FILE_LOCK_EXCLUSIVE:
1648 f->lock = fio_sem_init(FIO_SEM_UNLOCKED);
1649 break;
1650 default:
1651 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1652 assert(0);
1653 }
1654
1655 td->files_index++;
1656
1657 if (td->o.numjobs > 1)
1658 set_already_allocated(file_name);
1659
1660 if (inc)
1661 td->o.nr_files++;
1662
1663 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1664 cur_files);
1665
1666 return cur_files;
1667}
1668
1669int add_file_exclusive(struct thread_data *td, const char *fname)
1670{
1671 struct fio_file *f;
1672 unsigned int i;
1673
1674 for_each_file(td, f, i) {
1675 if (!strcmp(f->file_name, fname))
1676 return i;
1677 }
1678
1679 return add_file(td, fname, 0, 1);
1680}
1681
1682void get_file(struct fio_file *f)
1683{
1684 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1685 assert(fio_file_open(f));
1686 f->references++;
1687}
1688
1689int put_file(struct thread_data *td, struct fio_file *f)
1690{
1691 int f_ret = 0, ret = 0;
1692
1693 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1694
1695 if (!fio_file_open(f)) {
1696 assert(f->fd == -1);
1697 return 0;
1698 }
1699
1700 assert(f->references);
1701 if (--f->references)
1702 return 0;
1703
1704 disk_util_dec(f->du);
1705
1706 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1707 unlock_file_all(td, f);
1708
1709 if (should_fsync(td) && td->o.fsync_on_close) {
1710 f_ret = fsync(f->fd);
1711 if (f_ret < 0)
1712 f_ret = errno;
1713 }
1714
1715 if (td->io_ops->close_file)
1716 ret = td->io_ops->close_file(td, f);
1717
1718 if (!ret)
1719 ret = f_ret;
1720
1721 td->nr_open_files--;
1722 fio_file_clear_closing(f);
1723 fio_file_clear_open(f);
1724 assert(f->fd == -1);
1725 return ret;
1726}
1727
1728void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1729{
1730 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1731 return;
1732
1733 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1734 if (ddir == DDIR_READ)
1735 fio_rwlock_read(f->rwlock);
1736 else
1737 fio_rwlock_write(f->rwlock);
1738 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1739 fio_sem_down(f->lock);
1740
1741 td->file_locks[f->fileno] = td->o.file_lock_mode;
1742}
1743
1744void unlock_file(struct thread_data *td, struct fio_file *f)
1745{
1746 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1747 return;
1748
1749 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1750 fio_rwlock_unlock(f->rwlock);
1751 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1752 fio_sem_up(f->lock);
1753
1754 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1755}
1756
1757void unlock_file_all(struct thread_data *td, struct fio_file *f)
1758{
1759 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1760 return;
1761 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1762 unlock_file(td, f);
1763}
1764
1765static bool recurse_dir(struct thread_data *td, const char *dirname)
1766{
1767 struct dirent *dir;
1768 bool ret = false;
1769 DIR *D;
1770
1771 D = opendir(dirname);
1772 if (!D) {
1773 char buf[FIO_VERROR_SIZE];
1774
1775 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1776 td_verror(td, errno, buf);
1777 return true;
1778 }
1779
1780 while ((dir = readdir(D)) != NULL) {
1781 char full_path[PATH_MAX];
1782 struct stat sb;
1783
1784 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1785 continue;
1786
1787 sprintf(full_path, "%s%c%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1788
1789 if (lstat(full_path, &sb) == -1) {
1790 if (errno != ENOENT) {
1791 td_verror(td, errno, "stat");
1792 ret = true;
1793 break;
1794 }
1795 }
1796
1797 if (S_ISREG(sb.st_mode)) {
1798 add_file(td, full_path, 0, 1);
1799 continue;
1800 }
1801 if (!S_ISDIR(sb.st_mode))
1802 continue;
1803
1804 ret = recurse_dir(td, full_path);
1805 if (ret)
1806 break;
1807 }
1808
1809 closedir(D);
1810 return ret;
1811}
1812
1813int add_dir_files(struct thread_data *td, const char *path)
1814{
1815 int ret = recurse_dir(td, path);
1816
1817 if (!ret)
1818 log_info("fio: opendir added %d files\n", td->o.nr_files);
1819
1820 return ret;
1821}
1822
1823void dup_files(struct thread_data *td, struct thread_data *org)
1824{
1825 struct fio_file *f;
1826 unsigned int i;
1827
1828 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1829
1830 if (!org->files)
1831 return;
1832
1833 td->files = malloc(org->files_index * sizeof(f));
1834
1835 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1836 td->file_locks = malloc(org->files_index);
1837
1838 for_each_file(org, f, i) {
1839 struct fio_file *__f;
1840
1841 __f = alloc_new_file(td);
1842
1843 if (f->file_name) {
1844 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1845 __f->file_name = strdup(f->file_name);
1846 else
1847 __f->file_name = smalloc_strdup(f->file_name);
1848
1849 /* can't handle smalloc failure from here */
1850 assert(__f->file_name);
1851 __f->filetype = f->filetype;
1852 }
1853
1854 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1855 __f->lock = f->lock;
1856 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1857 __f->rwlock = f->rwlock;
1858
1859 td->files[i] = __f;
1860 }
1861}
1862
1863/*
1864 * Returns the index that matches the filename, or -1 if not there
1865 */
1866int get_fileno(struct thread_data *td, const char *fname)
1867{
1868 struct fio_file *f;
1869 unsigned int i;
1870
1871 for_each_file(td, f, i)
1872 if (!strcmp(f->file_name, fname))
1873 return i;
1874
1875 return -1;
1876}
1877
1878/*
1879 * For log usage, where we add/open/close files automatically
1880 */
1881void free_release_files(struct thread_data *td)
1882{
1883 close_files(td);
1884 td->o.nr_files = 0;
1885 td->o.open_files = 0;
1886 td->files_index = 0;
1887}
1888
1889void fio_file_reset(struct thread_data *td, struct fio_file *f)
1890{
1891 int i;
1892
1893 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1894 f->last_pos[i] = f->file_offset;
1895 f->last_start[i] = -1ULL;
1896 }
1897
1898 if (fio_file_axmap(f))
1899 axmap_reset(f->io_axmap);
1900 else if (fio_file_lfsr(f))
1901 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1902
1903 zbd_file_reset(td, f);
1904}
1905
1906bool fio_files_done(struct thread_data *td)
1907{
1908 struct fio_file *f;
1909 unsigned int i;
1910
1911 for_each_file(td, f, i)
1912 if (!fio_file_done(f))
1913 return false;
1914
1915 return true;
1916}
1917
1918/* free memory used in initialization phase only */
1919void filesetup_mem_free(void)
1920{
1921 free_already_allocated();
1922}
1923
1924/*
1925 * This function is for platforms which support direct I/O but not O_DIRECT.
1926 */
1927int fio_set_directio(struct thread_data *td, struct fio_file *f)
1928{
1929#ifdef FIO_OS_DIRECTIO
1930 int ret = fio_set_odirect(f);
1931
1932 if (ret) {
1933 td_verror(td, ret, "fio_set_directio");
1934#if defined(__sun__)
1935 if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
1936 log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
1937 } else {
1938 log_err("fio: the file system does not seem to support direct IO\n");
1939 }
1940#else
1941 log_err("fio: the file system does not seem to support direct IO\n");
1942#endif
1943 return -1;
1944 }
1945
1946 return 0;
1947#else
1948 log_err("fio: direct IO is not supported on this host operating system\n");
1949 return -1;
1950#endif
1951}
fio - Flexible IO Tester