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