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