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