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Merge branch 'json_bw_bytes' of https://github.com/sitsofe/fio
[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 = -1ULL;
440
441 /*
442 * Leave ->real_file_size with 0 since it could be expectation
443 * of initial setup for regular files.
444 */
445 if (ret)
446 return ret;
447
448 /*
449 * If ->real_file_size is -1, a conditional for the message
450 * "offset extends end" is always true, but it makes no sense,
451 * so just return the same value here.
452 */
453 if (f->real_file_size == -1ULL) {
454 log_info("%s: failed to get file size of %s\n", td->o.name,
455 f->file_name);
456 return 1;
457 }
458
459 if (td->o.start_offset && f->file_offset == 0)
460 dprint(FD_FILE, "offset of file %s not initialized yet\n",
461 f->file_name);
462 /*
463 * ->file_offset normally hasn't been initialized yet, so this
464 * is basically always false.
465 */
466 if (f->file_offset > f->real_file_size) {
467 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
468 (unsigned long long) f->file_offset,
469 (unsigned long long) f->real_file_size);
470 return 1;
471 }
472
473 fio_file_set_size_known(f);
474 return 0;
475}
476
477static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
478 unsigned long long off,
479 unsigned long long len)
480{
481 int errval = 0, ret = 0;
482
483#ifdef CONFIG_ESX
484 return 0;
485#endif
486
487 if (len == -1ULL)
488 len = f->io_size;
489 if (off == -1ULL)
490 off = f->file_offset;
491
492 if (len == -1ULL || off == -1ULL)
493 return 0;
494
495 if (td->io_ops->invalidate) {
496 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
497 f->file_name);
498 ret = td->io_ops->invalidate(td, f);
499 if (ret < 0)
500 errval = -ret;
501 } else if (f->filetype == FIO_TYPE_FILE) {
502 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
503 f->file_name, off, len);
504 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
505 if (ret)
506 errval = ret;
507 } else if (f->filetype == FIO_TYPE_BLOCK) {
508 int retry_count = 0;
509
510 dprint(FD_IO, "drop page cache %s\n", f->file_name);
511 ret = blockdev_invalidate_cache(f);
512 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
513 /*
514 * Linux multipath devices reject ioctl while
515 * the maps are being updated. That window can
516 * last tens of milliseconds; we'll try up to
517 * a quarter of a second.
518 */
519 usleep(10000);
520 ret = blockdev_invalidate_cache(f);
521 }
522 if (ret < 0 && errno == EACCES && geteuid()) {
523 if (!root_warn) {
524 log_err("fio: only root may flush block "
525 "devices. Cache flush bypassed!\n");
526 root_warn = 1;
527 }
528 ret = 0;
529 }
530 if (ret < 0)
531 errval = errno;
532 } else if (f->filetype == FIO_TYPE_CHAR ||
533 f->filetype == FIO_TYPE_PIPE) {
534 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
535 ret = 0;
536 }
537
538 /*
539 * Cache flushing isn't a fatal condition, and we know it will
540 * happen on some platforms where we don't have the proper
541 * function to flush eg block device caches. So just warn and
542 * continue on our way.
543 */
544 if (errval)
545 log_info("fio: cache invalidation of %s failed: %s\n",
546 f->file_name, strerror(errval));
547
548 return 0;
549
550}
551
552int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
553{
554 if (!fio_file_open(f))
555 return 0;
556
557 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
558}
559
560int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
561{
562 int ret = 0;
563
564 dprint(FD_FILE, "fd close %s\n", f->file_name);
565
566 remove_file_hash(f);
567
568 if (close(f->fd) < 0)
569 ret = errno;
570
571 f->fd = -1;
572
573 if (f->shadow_fd != -1) {
574 close(f->shadow_fd);
575 f->shadow_fd = -1;
576 }
577
578 f->engine_pos = 0;
579 return ret;
580}
581
582int file_lookup_open(struct fio_file *f, int flags)
583{
584 struct fio_file *__f;
585 int from_hash;
586
587 __f = lookup_file_hash(f->file_name);
588 if (__f) {
589 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
590 f->lock = __f->lock;
591 from_hash = 1;
592 } else {
593 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
594 from_hash = 0;
595 }
596
597#ifdef WIN32
598 flags |= _O_BINARY;
599#endif
600
601 f->fd = open(f->file_name, flags, 0600);
602 return from_hash;
603}
604
605static int file_close_shadow_fds(struct thread_data *td)
606{
607 struct fio_file *f;
608 int num_closed = 0;
609 unsigned int i;
610
611 for_each_file(td, f, i) {
612 if (f->shadow_fd == -1)
613 continue;
614
615 close(f->shadow_fd);
616 f->shadow_fd = -1;
617 num_closed++;
618 }
619
620 return num_closed;
621}
622
623int generic_open_file(struct thread_data *td, struct fio_file *f)
624{
625 int is_std = 0;
626 int flags = 0;
627 int from_hash = 0;
628
629 dprint(FD_FILE, "fd open %s\n", f->file_name);
630
631 if (!strcmp(f->file_name, "-")) {
632 if (td_rw(td)) {
633 log_err("fio: can't read/write to stdin/out\n");
634 return 1;
635 }
636 is_std = 1;
637
638 /*
639 * move output logging to stderr, if we are writing to stdout
640 */
641 if (td_write(td))
642 f_out = stderr;
643 }
644
645 if (td_trim(td))
646 goto skip_flags;
647 if (td->o.odirect)
648 flags |= OS_O_DIRECT;
649 if (td->o.oatomic) {
650 if (!FIO_O_ATOMIC) {
651 td_verror(td, EINVAL, "OS does not support atomic IO");
652 return 1;
653 }
654 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
655 }
656 if (td->o.sync_io)
657 flags |= O_SYNC;
658 if (td->o.create_on_open && td->o.allow_create)
659 flags |= O_CREAT;
660skip_flags:
661 if (f->filetype != FIO_TYPE_FILE)
662 flags |= FIO_O_NOATIME;
663
664open_again:
665 if (td_write(td)) {
666 if (!read_only)
667 flags |= O_RDWR;
668
669 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
670 flags |= O_CREAT;
671
672 if (is_std)
673 f->fd = dup(STDOUT_FILENO);
674 else
675 from_hash = file_lookup_open(f, flags);
676 } else if (td_read(td)) {
677 if (f->filetype == FIO_TYPE_CHAR && !read_only)
678 flags |= O_RDWR;
679 else
680 flags |= O_RDONLY;
681
682 if (is_std)
683 f->fd = dup(STDIN_FILENO);
684 else
685 from_hash = file_lookup_open(f, flags);
686 } else if (td_trim(td)) {
687 assert(!td_rw(td)); /* should have matched above */
688 flags |= O_RDWR;
689 from_hash = file_lookup_open(f, flags);
690 }
691
692 if (f->fd == -1) {
693 char buf[FIO_VERROR_SIZE];
694 int __e = errno;
695
696 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
697 flags &= ~FIO_O_NOATIME;
698 goto open_again;
699 }
700 if (__e == EMFILE && file_close_shadow_fds(td))
701 goto open_again;
702
703 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
704
705 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
706 log_err("fio: looks like your file system does not " \
707 "support direct=1/buffered=0\n");
708 }
709
710 td_verror(td, __e, buf);
711 return 1;
712 }
713
714 if (!from_hash && f->fd != -1) {
715 if (add_file_hash(f)) {
716 int fio_unused ret;
717
718 /*
719 * Stash away descriptor for later close. This is to
720 * work-around a "feature" on Linux, where a close of
721 * an fd that has been opened for write will trigger
722 * udev to call blkid to check partitions, fs id, etc.
723 * That pollutes the device cache, which can slow down
724 * unbuffered accesses.
725 */
726 if (f->shadow_fd == -1)
727 f->shadow_fd = f->fd;
728 else {
729 /*
730 * OK to ignore, we haven't done anything
731 * with it
732 */
733 ret = generic_close_file(td, f);
734 }
735 goto open_again;
736 }
737 }
738
739 return 0;
740}
741
742/*
743 * This function i.e. get_file_size() is the default .get_file_size
744 * implementation of majority of I/O engines.
745 */
746int generic_get_file_size(struct thread_data *td, struct fio_file *f)
747{
748 return get_file_size(td, f);
749}
750
751/*
752 * open/close all files, so that ->real_file_size gets set
753 */
754static int get_file_sizes(struct thread_data *td)
755{
756 struct fio_file *f;
757 unsigned int i;
758 int err = 0;
759
760 for_each_file(td, f, i) {
761 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
762 f->file_name);
763
764 if (td_io_get_file_size(td, f)) {
765 if (td->error != ENOENT) {
766 log_err("%s\n", td->verror);
767 err = 1;
768 break;
769 }
770 clear_error(td);
771 }
772
773 /*
774 * There are corner cases where we end up with -1 for
775 * ->real_file_size due to unsupported file type, etc.
776 * We then just set to size option value divided by number
777 * of files, similar to the way file ->io_size is set.
778 * stat(2) failure doesn't set ->real_file_size to -1.
779 */
780 if (f->real_file_size == -1ULL && td->o.size)
781 f->real_file_size = td->o.size / td->o.nr_files;
782 }
783
784 return err;
785}
786
787struct fio_mount {
788 struct flist_head list;
789 const char *base;
790 char __base[256];
791 unsigned int key;
792};
793
794/*
795 * Get free number of bytes for each file on each unique mount.
796 */
797static unsigned long long get_fs_free_counts(struct thread_data *td)
798{
799 struct flist_head *n, *tmp;
800 unsigned long long ret = 0;
801 struct fio_mount *fm;
802 FLIST_HEAD(list);
803 struct fio_file *f;
804 unsigned int i;
805
806 for_each_file(td, f, i) {
807 struct stat sb;
808 char buf[256];
809
810 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
811 if (f->real_file_size != -1ULL)
812 ret += f->real_file_size;
813 continue;
814 } else if (f->filetype != FIO_TYPE_FILE)
815 continue;
816
817 buf[255] = '\0';
818 strncpy(buf, f->file_name, 255);
819
820 if (stat(buf, &sb) < 0) {
821 if (errno != ENOENT)
822 break;
823 strcpy(buf, ".");
824 if (stat(buf, &sb) < 0)
825 break;
826 }
827
828 fm = NULL;
829 flist_for_each(n, &list) {
830 fm = flist_entry(n, struct fio_mount, list);
831 if (fm->key == sb.st_dev)
832 break;
833
834 fm = NULL;
835 }
836
837 if (fm)
838 continue;
839
840 fm = calloc(1, sizeof(*fm));
841 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
842 fm->base = basename(fm->__base);
843 fm->key = sb.st_dev;
844 flist_add(&fm->list, &list);
845 }
846
847 flist_for_each_safe(n, tmp, &list) {
848 unsigned long long sz;
849
850 fm = flist_entry(n, struct fio_mount, list);
851 flist_del(&fm->list);
852
853 sz = get_fs_free_size(fm->base);
854 if (sz && sz != -1ULL)
855 ret += sz;
856
857 free(fm);
858 }
859
860 return ret;
861}
862
863uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
864{
865 struct thread_options *o = &td->o;
866 unsigned long long align_bs;
867 unsigned long long offset;
868
869 if (o->file_append && f->filetype == FIO_TYPE_FILE)
870 return f->real_file_size;
871
872 if (o->start_offset_percent > 0) {
873 /*
874 * if offset_align is provided, set initial offset
875 */
876 if (fio_option_is_set(o, start_offset_align)) {
877 align_bs = o->start_offset_align;
878 } else {
879 /* else take the minimum block size */
880 align_bs = td_min_bs(td);
881 }
882
883 /* calculate the raw offset */
884 offset = (f->real_file_size * o->start_offset_percent / 100) +
885 (td->subjob_number * o->offset_increment);
886
887 /*
888 * block align the offset at the next available boundary at
889 * ceiling(offset / align_bs) * align_bs
890 */
891 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
892
893 } else {
894 /* start_offset_percent not set */
895 offset = o->start_offset +
896 td->subjob_number * o->offset_increment;
897 }
898
899 return offset;
900}
901
902/*
903 * Open the files and setup files sizes, creating files if necessary.
904 */
905int setup_files(struct thread_data *td)
906{
907 unsigned long long total_size, extend_size;
908 struct thread_options *o = &td->o;
909 struct fio_file *f;
910 unsigned int i, nr_fs_extra = 0;
911 int err = 0, need_extend;
912 int old_state;
913 const unsigned int bs = td_min_bs(td);
914 uint64_t fs = 0;
915
916 dprint(FD_FILE, "setup files\n");
917
918 old_state = td_bump_runstate(td, TD_SETTING_UP);
919
920 if (o->read_iolog_file)
921 goto done;
922
923 /*
924 * Find out physical size of files or devices for this thread,
925 * before we determine I/O size and range of our targets.
926 * If ioengine defines a setup() method, it's responsible for
927 * opening the files and setting f->real_file_size to indicate
928 * the valid range for that file.
929 */
930 if (td->io_ops->setup)
931 err = td->io_ops->setup(td);
932 else
933 err = get_file_sizes(td);
934
935 if (err)
936 goto err_out;
937
938 /*
939 * check sizes. if the files/devices do not exist and the size
940 * isn't passed to fio, abort.
941 */
942 total_size = 0;
943 for_each_file(td, f, i) {
944 f->fileno = i;
945 if (f->real_file_size == -1ULL)
946 total_size = -1ULL;
947 else
948 total_size += f->real_file_size;
949 }
950
951 if (o->fill_device)
952 td->fill_device_size = get_fs_free_counts(td);
953
954 /*
955 * device/file sizes are zero and no size given, punt
956 */
957 if ((!total_size || total_size == -1ULL) && !o->size &&
958 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
959 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
960 log_err("%s: you need to specify size=\n", o->name);
961 td_verror(td, EINVAL, "total_file_size");
962 goto err_out;
963 }
964
965 /*
966 * Calculate per-file size and potential extra size for the
967 * first files, if needed (i.e. if we don't have a fixed size).
968 */
969 if (!o->file_size_low && o->nr_files) {
970 uint64_t all_fs;
971
972 fs = o->size / o->nr_files;
973 all_fs = fs * o->nr_files;
974
975 if (all_fs < o->size)
976 nr_fs_extra = (o->size - all_fs) / bs;
977 }
978
979 /*
980 * now file sizes are known, so we can set ->io_size. if size= is
981 * not given, ->io_size is just equal to ->real_file_size. if size
982 * is given, ->io_size is size / nr_files.
983 */
984 extend_size = total_size = 0;
985 need_extend = 0;
986 for_each_file(td, f, i) {
987 f->file_offset = get_start_offset(td, f);
988
989 /*
990 * Update ->io_size depending on options specified.
991 * ->file_size_low being 0 means filesize option isn't set.
992 * Non zero ->file_size_low equals ->file_size_high means
993 * filesize option is set in a fixed size format.
994 * Non zero ->file_size_low not equals ->file_size_high means
995 * filesize option is set in a range format.
996 */
997 if (!o->file_size_low) {
998 /*
999 * no file size or range given, file size is equal to
1000 * total size divided by number of files. If the size
1001 * doesn't divide nicely with the min blocksize,
1002 * make the first files bigger.
1003 */
1004 f->io_size = fs;
1005 if (nr_fs_extra) {
1006 nr_fs_extra--;
1007 f->io_size += bs;
1008 }
1009
1010 /*
1011 * We normally don't come here for regular files, but
1012 * if the result is 0 for a regular file, set it to the
1013 * real file size. This could be size of the existing
1014 * one if it already exists, but otherwise will be set
1015 * to 0. A new file won't be created because
1016 * ->io_size + ->file_offset equals ->real_file_size.
1017 */
1018 if (!f->io_size) {
1019 if (f->file_offset > f->real_file_size)
1020 goto err_offset;
1021 f->io_size = f->real_file_size - f->file_offset;
1022 if (!f->io_size)
1023 log_info("fio: file %s may be ignored\n",
1024 f->file_name);
1025 }
1026 } else if (f->real_file_size < o->file_size_low ||
1027 f->real_file_size > o->file_size_high) {
1028 if (f->file_offset > o->file_size_low)
1029 goto err_offset;
1030 /*
1031 * file size given. if it's fixed, use that. if it's a
1032 * range, generate a random size in-between.
1033 */
1034 if (o->file_size_low == o->file_size_high)
1035 f->io_size = o->file_size_low - f->file_offset;
1036 else {
1037 f->io_size = get_rand_file_size(td)
1038 - f->file_offset;
1039 }
1040 } else
1041 f->io_size = f->real_file_size - f->file_offset;
1042
1043 if (f->io_size == -1ULL)
1044 total_size = -1ULL;
1045 else {
1046 if (o->size_percent) {
1047 uint64_t file_size;
1048
1049 file_size = f->io_size + f->file_offset;
1050 f->io_size = (file_size *
1051 o->size_percent) / 100;
1052 if (f->io_size > (file_size - f->file_offset))
1053 f->io_size = file_size - f->file_offset;
1054
1055 f->io_size -= (f->io_size % td_min_bs(td));
1056 }
1057 total_size += f->io_size;
1058 }
1059
1060 if (f->filetype == FIO_TYPE_FILE &&
1061 (f->io_size + f->file_offset) > f->real_file_size &&
1062 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1063 if (!o->create_on_open) {
1064 need_extend++;
1065 extend_size += (f->io_size + f->file_offset);
1066 fio_file_set_extend(f);
1067 } else
1068 f->real_file_size = f->io_size + f->file_offset;
1069 }
1070 }
1071
1072 if (td->o.block_error_hist) {
1073 int len;
1074
1075 assert(td->o.nr_files == 1); /* checked in fixup_options */
1076 f = td->files[0];
1077 len = f->io_size / td->o.bs[DDIR_TRIM];
1078 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1079 log_err("fio: cannot calculate block histogram with "
1080 "%d trim blocks, maximum %d\n",
1081 len, MAX_NR_BLOCK_INFOS);
1082 td_verror(td, EINVAL, "block_error_hist");
1083 goto err_out;
1084 }
1085
1086 td->ts.nr_block_infos = len;
1087 for (i = 0; i < len; i++)
1088 td->ts.block_infos[i] =
1089 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1090 } else
1091 td->ts.nr_block_infos = 0;
1092
1093 if (!o->size || (total_size && o->size > total_size))
1094 o->size = total_size;
1095
1096 if (o->size < td_min_bs(td)) {
1097 log_err("fio: blocksize too large for data set\n");
1098 goto err_out;
1099 }
1100
1101 /*
1102 * See if we need to extend some files, typically needed when our
1103 * target regular files don't exist yet, but our jobs require them
1104 * initially due to read I/Os.
1105 */
1106 if (need_extend) {
1107 temp_stall_ts = 1;
1108 if (output_format & FIO_OUTPUT_NORMAL) {
1109 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1110 o->name,
1111 need_extend > 1 ? "s" : "",
1112 need_extend,
1113 need_extend > 1 ? "s" : "",
1114 need_extend > 1 ? "total " : "",
1115 extend_size >> 20);
1116 }
1117
1118 for_each_file(td, f, i) {
1119 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1120
1121 if (!fio_file_extend(f))
1122 continue;
1123
1124 assert(f->filetype == FIO_TYPE_FILE);
1125 fio_file_clear_extend(f);
1126 if (!o->fill_device) {
1127 old_len = f->real_file_size;
1128 extend_len = f->io_size + f->file_offset -
1129 old_len;
1130 }
1131 f->real_file_size = (f->io_size + f->file_offset);
1132 err = extend_file(td, f);
1133 if (err)
1134 break;
1135
1136 err = __file_invalidate_cache(td, f, old_len,
1137 extend_len);
1138
1139 /*
1140 * Shut up static checker
1141 */
1142 if (f->fd != -1)
1143 close(f->fd);
1144
1145 f->fd = -1;
1146 if (err)
1147 break;
1148 }
1149 temp_stall_ts = 0;
1150 }
1151
1152 if (err)
1153 goto err_out;
1154
1155 if (!o->zone_size)
1156 o->zone_size = o->size;
1157
1158 /*
1159 * iolog already set the total io size, if we read back
1160 * stored entries.
1161 */
1162 if (!o->read_iolog_file) {
1163 if (o->io_size)
1164 td->total_io_size = o->io_size * o->loops;
1165 else
1166 td->total_io_size = o->size * o->loops;
1167 }
1168
1169done:
1170 if (o->create_only)
1171 td->done = 1;
1172
1173 td_restore_runstate(td, old_state);
1174 return 0;
1175err_offset:
1176 log_err("%s: you need to specify valid offset=\n", o->name);
1177err_out:
1178 td_restore_runstate(td, old_state);
1179 return 1;
1180}
1181
1182bool pre_read_files(struct thread_data *td)
1183{
1184 struct fio_file *f;
1185 unsigned int i;
1186
1187 dprint(FD_FILE, "pre_read files\n");
1188
1189 for_each_file(td, f, i) {
1190 if (!pre_read_file(td, f))
1191 return false;
1192 }
1193
1194 return true;
1195}
1196
1197static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1198{
1199 unsigned int range_size, seed;
1200 unsigned long nranges;
1201 uint64_t fsize;
1202
1203 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1204 fsize = min(f->real_file_size, f->io_size);
1205
1206 nranges = (fsize + range_size - 1) / range_size;
1207
1208 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1209 if (!td->o.rand_repeatable)
1210 seed = td->rand_seeds[4];
1211
1212 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1213 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1214 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1215 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1216 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1217 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1218}
1219
1220static bool init_rand_distribution(struct thread_data *td)
1221{
1222 struct fio_file *f;
1223 unsigned int i;
1224 int state;
1225
1226 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1227 return false;
1228
1229 state = td_bump_runstate(td, TD_SETTING_UP);
1230
1231 for_each_file(td, f, i)
1232 __init_rand_distribution(td, f);
1233
1234 td_restore_runstate(td, state);
1235 return true;
1236}
1237
1238/*
1239 * Check if the number of blocks exceeds the randomness capability of
1240 * the selected generator. Tausworthe is 32-bit, the others are fullly
1241 * 64-bit capable.
1242 */
1243static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1244 uint64_t blocks)
1245{
1246 if (blocks <= FRAND32_MAX)
1247 return 0;
1248 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1249 return 0;
1250
1251 /*
1252 * If the user hasn't specified a random generator, switch
1253 * to tausworthe64 with informational warning. If the user did
1254 * specify one, just warn.
1255 */
1256 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1257 f->file_name);
1258
1259 if (!fio_option_is_set(&td->o, random_generator)) {
1260 log_info("fio: Switching to tausworthe64. Use the "
1261 "random_generator= option to get rid of this "
1262 "warning.\n");
1263 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1264 return 0;
1265 }
1266
1267 /*
1268 * Just make this information to avoid breaking scripts.
1269 */
1270 log_info("fio: Use the random_generator= option to switch to lfsr or "
1271 "tausworthe64.\n");
1272 return 0;
1273}
1274
1275bool init_random_map(struct thread_data *td)
1276{
1277 unsigned long long blocks;
1278 struct fio_file *f;
1279 unsigned int i;
1280
1281 if (init_rand_distribution(td))
1282 return true;
1283 if (!td_random(td))
1284 return true;
1285
1286 for_each_file(td, f, i) {
1287 uint64_t fsize = min(f->real_file_size, f->io_size);
1288
1289 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1290
1291 if (check_rand_gen_limits(td, f, blocks))
1292 return false;
1293
1294 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1295 unsigned long seed;
1296
1297 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1298
1299 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1300 fio_file_set_lfsr(f);
1301 continue;
1302 }
1303 } else if (!td->o.norandommap) {
1304 f->io_axmap = axmap_new(blocks);
1305 if (f->io_axmap) {
1306 fio_file_set_axmap(f);
1307 continue;
1308 }
1309 } else if (td->o.norandommap)
1310 continue;
1311
1312 if (!td->o.softrandommap) {
1313 log_err("fio: failed allocating random map. If running"
1314 " a large number of jobs, try the 'norandommap'"
1315 " option or set 'softrandommap'. Or give"
1316 " a larger --alloc-size to fio.\n");
1317 return false;
1318 }
1319
1320 log_info("fio: file %s failed allocating random map. Running "
1321 "job without.\n", f->file_name);
1322 }
1323
1324 return true;
1325}
1326
1327void close_files(struct thread_data *td)
1328{
1329 struct fio_file *f;
1330 unsigned int i;
1331
1332 for_each_file(td, f, i) {
1333 if (fio_file_open(f))
1334 td_io_close_file(td, f);
1335 }
1336}
1337
1338void close_and_free_files(struct thread_data *td)
1339{
1340 struct fio_file *f;
1341 unsigned int i;
1342 bool use_free = td_ioengine_flagged(td, FIO_NOFILEHASH);
1343
1344 dprint(FD_FILE, "close files\n");
1345
1346 for_each_file(td, f, i) {
1347 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1348 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1349 td_io_unlink_file(td, f);
1350 }
1351
1352 if (fio_file_open(f))
1353 td_io_close_file(td, f);
1354
1355 remove_file_hash(f);
1356
1357 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1358 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1359 td_io_unlink_file(td, f);
1360 }
1361
1362 if (use_free)
1363 free(f->file_name);
1364 else
1365 sfree(f->file_name);
1366 f->file_name = NULL;
1367 if (fio_file_axmap(f)) {
1368 axmap_free(f->io_axmap);
1369 f->io_axmap = NULL;
1370 }
1371 if (use_free)
1372 free(f);
1373 else
1374 sfree(f);
1375 }
1376
1377 td->o.filename = NULL;
1378 free(td->files);
1379 free(td->file_locks);
1380 td->files_index = 0;
1381 td->files = NULL;
1382 td->file_locks = NULL;
1383 td->o.file_lock_mode = FILE_LOCK_NONE;
1384 td->o.nr_files = 0;
1385}
1386
1387static void get_file_type(struct fio_file *f)
1388{
1389 struct stat sb;
1390
1391 if (!strcmp(f->file_name, "-"))
1392 f->filetype = FIO_TYPE_PIPE;
1393 else
1394 f->filetype = FIO_TYPE_FILE;
1395
1396#ifdef WIN32
1397 /* \\.\ is the device namespace in Windows, where every file is
1398 * a block device */
1399 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1400 f->filetype = FIO_TYPE_BLOCK;
1401#endif
1402
1403 if (!stat(f->file_name, &sb)) {
1404 if (S_ISBLK(sb.st_mode))
1405 f->filetype = FIO_TYPE_BLOCK;
1406 else if (S_ISCHR(sb.st_mode))
1407 f->filetype = FIO_TYPE_CHAR;
1408 else if (S_ISFIFO(sb.st_mode))
1409 f->filetype = FIO_TYPE_PIPE;
1410 }
1411}
1412
1413static bool __is_already_allocated(const char *fname, bool set)
1414{
1415 struct flist_head *entry;
1416 bool ret;
1417
1418 ret = file_bloom_exists(fname, set);
1419 if (!ret)
1420 return ret;
1421
1422 flist_for_each(entry, &filename_list) {
1423 struct file_name *fn;
1424
1425 fn = flist_entry(entry, struct file_name, list);
1426
1427 if (!strcmp(fn->filename, fname))
1428 return true;
1429 }
1430
1431 return false;
1432}
1433
1434static bool is_already_allocated(const char *fname)
1435{
1436 bool ret;
1437
1438 fio_file_hash_lock();
1439 ret = __is_already_allocated(fname, false);
1440 fio_file_hash_unlock();
1441
1442 return ret;
1443}
1444
1445static void set_already_allocated(const char *fname)
1446{
1447 struct file_name *fn;
1448
1449 fn = malloc(sizeof(struct file_name));
1450 fn->filename = strdup(fname);
1451
1452 fio_file_hash_lock();
1453 if (!__is_already_allocated(fname, true)) {
1454 flist_add_tail(&fn->list, &filename_list);
1455 fn = NULL;
1456 }
1457 fio_file_hash_unlock();
1458
1459 if (fn) {
1460 free(fn->filename);
1461 free(fn);
1462 }
1463}
1464
1465static void free_already_allocated(void)
1466{
1467 struct flist_head *entry, *tmp;
1468 struct file_name *fn;
1469
1470 if (flist_empty(&filename_list))
1471 return;
1472
1473 fio_file_hash_lock();
1474 flist_for_each_safe(entry, tmp, &filename_list) {
1475 fn = flist_entry(entry, struct file_name, list);
1476 free(fn->filename);
1477 flist_del(&fn->list);
1478 free(fn);
1479 }
1480
1481 fio_file_hash_unlock();
1482}
1483
1484static struct fio_file *alloc_new_file(struct thread_data *td)
1485{
1486 struct fio_file *f;
1487
1488 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1489 f = calloc(1, sizeof(*f));
1490 else
1491 f = smalloc(sizeof(*f));
1492 if (!f) {
1493 assert(0);
1494 return NULL;
1495 }
1496
1497 f->fd = -1;
1498 f->shadow_fd = -1;
1499 fio_file_reset(td, f);
1500 return f;
1501}
1502
1503bool exists_and_not_regfile(const char *filename)
1504{
1505 struct stat sb;
1506
1507 if (lstat(filename, &sb) == -1)
1508 return false;
1509
1510#ifndef WIN32 /* NOT Windows */
1511 if (S_ISREG(sb.st_mode))
1512 return false;
1513#else
1514 /* \\.\ is the device namespace in Windows, where every file
1515 * is a device node */
1516 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1517 return false;
1518#endif
1519
1520 return true;
1521}
1522
1523static bool create_work_dirs(struct thread_data *td, const char *fname)
1524{
1525 char path[PATH_MAX];
1526 char *start, *end;
1527
1528 if (td->o.directory) {
1529 snprintf(path, PATH_MAX, "%s%c%s", td->o.directory,
1530 FIO_OS_PATH_SEPARATOR, fname);
1531 start = strstr(path, fname);
1532 } else {
1533 snprintf(path, PATH_MAX, "%s", fname);
1534 start = path;
1535 }
1536
1537 end = start;
1538 while ((end = strchr(end, FIO_OS_PATH_SEPARATOR)) != NULL) {
1539 if (end == start)
1540 break;
1541 *end = '\0';
1542 errno = 0;
1543#ifdef CONFIG_HAVE_MKDIR_TWO
1544 if (mkdir(path, 0600) && errno != EEXIST) {
1545#else
1546 if (mkdir(path) && errno != EEXIST) {
1547#endif
1548 log_err("fio: failed to create dir (%s): %d\n",
1549 start, errno);
1550 return false;
1551 }
1552 *end = FIO_OS_PATH_SEPARATOR;
1553 end++;
1554 }
1555 td->flags |= TD_F_DIRS_CREATED;
1556 return true;
1557}
1558
1559int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1560{
1561 int cur_files = td->files_index;
1562 char file_name[PATH_MAX];
1563 struct fio_file *f;
1564 int len = 0;
1565
1566 dprint(FD_FILE, "add file %s\n", fname);
1567
1568 if (td->o.directory)
1569 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1570 td->o.unique_filename);
1571
1572 sprintf(file_name + len, "%s", fname);
1573
1574 if (strchr(fname, FIO_OS_PATH_SEPARATOR) &&
1575 !(td->flags & TD_F_DIRS_CREATED) &&
1576 !create_work_dirs(td, fname))
1577 return 1;
1578
1579 /* clean cloned siblings using existing files */
1580 if (numjob && is_already_allocated(file_name) &&
1581 !exists_and_not_regfile(fname))
1582 return 0;
1583
1584 f = alloc_new_file(td);
1585
1586 if (td->files_size <= td->files_index) {
1587 unsigned int new_size = td->o.nr_files + 1;
1588
1589 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1590
1591 td->files = realloc(td->files, new_size * sizeof(f));
1592 if (td->files == NULL) {
1593 log_err("fio: realloc OOM\n");
1594 assert(0);
1595 }
1596 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1597 td->file_locks = realloc(td->file_locks, new_size);
1598 if (!td->file_locks) {
1599 log_err("fio: realloc OOM\n");
1600 assert(0);
1601 }
1602 td->file_locks[cur_files] = FILE_LOCK_NONE;
1603 }
1604 td->files_size = new_size;
1605 }
1606 td->files[cur_files] = f;
1607 f->fileno = cur_files;
1608
1609 /*
1610 * init function, io engine may not be loaded yet
1611 */
1612 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1613 f->real_file_size = -1ULL;
1614
1615 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1616 f->file_name = strdup(file_name);
1617 else
1618 f->file_name = smalloc_strdup(file_name);
1619 if (!f->file_name)
1620 assert(0);
1621
1622 get_file_type(f);
1623
1624 switch (td->o.file_lock_mode) {
1625 case FILE_LOCK_NONE:
1626 break;
1627 case FILE_LOCK_READWRITE:
1628 f->rwlock = fio_rwlock_init();
1629 break;
1630 case FILE_LOCK_EXCLUSIVE:
1631 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1632 break;
1633 default:
1634 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1635 assert(0);
1636 }
1637
1638 td->files_index++;
1639 if (f->filetype == FIO_TYPE_FILE)
1640 td->nr_normal_files++;
1641
1642 if (td->o.numjobs > 1)
1643 set_already_allocated(file_name);
1644
1645 if (inc)
1646 td->o.nr_files++;
1647
1648 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1649 cur_files);
1650
1651 return cur_files;
1652}
1653
1654int add_file_exclusive(struct thread_data *td, const char *fname)
1655{
1656 struct fio_file *f;
1657 unsigned int i;
1658
1659 for_each_file(td, f, i) {
1660 if (!strcmp(f->file_name, fname))
1661 return i;
1662 }
1663
1664 return add_file(td, fname, 0, 1);
1665}
1666
1667void get_file(struct fio_file *f)
1668{
1669 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1670 assert(fio_file_open(f));
1671 f->references++;
1672}
1673
1674int put_file(struct thread_data *td, struct fio_file *f)
1675{
1676 int f_ret = 0, ret = 0;
1677
1678 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1679
1680 if (!fio_file_open(f)) {
1681 assert(f->fd == -1);
1682 return 0;
1683 }
1684
1685 assert(f->references);
1686 if (--f->references)
1687 return 0;
1688
1689 if (should_fsync(td) && td->o.fsync_on_close) {
1690 f_ret = fsync(f->fd);
1691 if (f_ret < 0)
1692 f_ret = errno;
1693 }
1694
1695 if (td->io_ops->close_file)
1696 ret = td->io_ops->close_file(td, f);
1697
1698 if (!ret)
1699 ret = f_ret;
1700
1701 td->nr_open_files--;
1702 fio_file_clear_open(f);
1703 assert(f->fd == -1);
1704 return ret;
1705}
1706
1707void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1708{
1709 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1710 return;
1711
1712 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1713 if (ddir == DDIR_READ)
1714 fio_rwlock_read(f->rwlock);
1715 else
1716 fio_rwlock_write(f->rwlock);
1717 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1718 fio_mutex_down(f->lock);
1719
1720 td->file_locks[f->fileno] = td->o.file_lock_mode;
1721}
1722
1723void unlock_file(struct thread_data *td, struct fio_file *f)
1724{
1725 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1726 return;
1727
1728 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1729 fio_rwlock_unlock(f->rwlock);
1730 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1731 fio_mutex_up(f->lock);
1732
1733 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1734}
1735
1736void unlock_file_all(struct thread_data *td, struct fio_file *f)
1737{
1738 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1739 return;
1740 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1741 unlock_file(td, f);
1742}
1743
1744static bool recurse_dir(struct thread_data *td, const char *dirname)
1745{
1746 struct dirent *dir;
1747 bool ret = false;
1748 DIR *D;
1749
1750 D = opendir(dirname);
1751 if (!D) {
1752 char buf[FIO_VERROR_SIZE];
1753
1754 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1755 td_verror(td, errno, buf);
1756 return true;
1757 }
1758
1759 while ((dir = readdir(D)) != NULL) {
1760 char full_path[PATH_MAX];
1761 struct stat sb;
1762
1763 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1764 continue;
1765
1766 sprintf(full_path, "%s%c%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1767
1768 if (lstat(full_path, &sb) == -1) {
1769 if (errno != ENOENT) {
1770 td_verror(td, errno, "stat");
1771 ret = true;
1772 break;
1773 }
1774 }
1775
1776 if (S_ISREG(sb.st_mode)) {
1777 add_file(td, full_path, 0, 1);
1778 continue;
1779 }
1780 if (!S_ISDIR(sb.st_mode))
1781 continue;
1782
1783 ret = recurse_dir(td, full_path);
1784 if (ret)
1785 break;
1786 }
1787
1788 closedir(D);
1789 return ret;
1790}
1791
1792int add_dir_files(struct thread_data *td, const char *path)
1793{
1794 int ret = recurse_dir(td, path);
1795
1796 if (!ret)
1797 log_info("fio: opendir added %d files\n", td->o.nr_files);
1798
1799 return ret;
1800}
1801
1802void dup_files(struct thread_data *td, struct thread_data *org)
1803{
1804 struct fio_file *f;
1805 unsigned int i;
1806
1807 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1808
1809 if (!org->files)
1810 return;
1811
1812 td->files = malloc(org->files_index * sizeof(f));
1813
1814 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1815 td->file_locks = malloc(org->files_index);
1816
1817 for_each_file(org, f, i) {
1818 struct fio_file *__f;
1819
1820 __f = alloc_new_file(td);
1821
1822 if (f->file_name) {
1823 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1824 __f->file_name = strdup(f->file_name);
1825 else
1826 __f->file_name = smalloc_strdup(f->file_name);
1827 if (!__f->file_name)
1828 assert(0);
1829
1830 __f->filetype = f->filetype;
1831 }
1832
1833 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1834 __f->lock = f->lock;
1835 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1836 __f->rwlock = f->rwlock;
1837
1838 td->files[i] = __f;
1839 }
1840}
1841
1842/*
1843 * Returns the index that matches the filename, or -1 if not there
1844 */
1845int get_fileno(struct thread_data *td, const char *fname)
1846{
1847 struct fio_file *f;
1848 unsigned int i;
1849
1850 for_each_file(td, f, i)
1851 if (!strcmp(f->file_name, fname))
1852 return i;
1853
1854 return -1;
1855}
1856
1857/*
1858 * For log usage, where we add/open/close files automatically
1859 */
1860void free_release_files(struct thread_data *td)
1861{
1862 close_files(td);
1863 td->o.nr_files = 0;
1864 td->o.open_files = 0;
1865 td->files_index = 0;
1866 td->nr_normal_files = 0;
1867}
1868
1869void fio_file_reset(struct thread_data *td, struct fio_file *f)
1870{
1871 int i;
1872
1873 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1874 f->last_pos[i] = f->file_offset;
1875 f->last_start[i] = -1ULL;
1876 }
1877
1878 if (fio_file_axmap(f))
1879 axmap_reset(f->io_axmap);
1880 else if (fio_file_lfsr(f))
1881 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1882}
1883
1884bool fio_files_done(struct thread_data *td)
1885{
1886 struct fio_file *f;
1887 unsigned int i;
1888
1889 for_each_file(td, f, i)
1890 if (!fio_file_done(f))
1891 return false;
1892
1893 return true;
1894}
1895
1896/* free memory used in initialization phase only */
1897void filesetup_mem_free(void)
1898{
1899 free_already_allocated();
1900}
1901
1902/*
1903 * This function is for platforms which support direct I/O but not O_DIRECT.
1904 */
1905int fio_set_directio(struct thread_data *td, struct fio_file *f)
1906{
1907#ifdef FIO_OS_DIRECTIO
1908 int ret = fio_set_odirect(f);
1909
1910 if (ret) {
1911 td_verror(td, ret, "fio_set_directio");
1912#if defined(__sun__)
1913 if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
1914 log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
1915 } else {
1916 log_err("fio: the file system does not seem to support direct IO\n");
1917 }
1918#else
1919 log_err("fio: the file system does not seem to support direct IO\n");
1920#endif
1921 return -1;
1922 }
1923
1924 return 0;
1925#else
1926 log_err("fio: direct IO is not supported on this host operating system\n");
1927 return -1;
1928#endif
1929}
fio - Flexible IO Tester