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zbd: relocate Coverity annotation
[fio.git] / filesetup.c
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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 case FIO_FALLOCATE_TRUNCATE: {
99 int r;
100
101 dprint(FD_FILE, "ftruncate file %s size %llu\n",
102 f->file_name,
103 (unsigned long long) f->real_file_size);
104 r = ftruncate(f->fd, f->real_file_size);
105 if (r != 0)
106 td_verror(td, errno, "ftruncate");
107
108 break;
109 }
110 default:
111 log_err("fio: unknown fallocate mode: %d\n", td->o.fallocate_mode);
112 assert(0);
113 }
114}
115
116/*
117 * Leaves f->fd open on success, caller must close
118 */
119static int extend_file(struct thread_data *td, struct fio_file *f)
120{
121 int new_layout = 0, unlink_file = 0, flags;
122 unsigned long long left;
123 unsigned long long bs;
124 char *b = NULL;
125
126 if (read_only) {
127 log_err("fio: refusing extend of file due to read-only\n");
128 return 0;
129 }
130
131 /*
132 * check if we need to lay the file out complete again. fio
133 * does that for operations involving reads, or for writes
134 * where overwrite is set
135 */
136 if (td_read(td) ||
137 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
138 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
139 new_layout = 1;
140 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
141 unlink_file = 1;
142
143 if (unlink_file || new_layout) {
144 int ret;
145
146 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
147
148 ret = td_io_unlink_file(td, f);
149 if (ret != 0 && ret != ENOENT) {
150 td_verror(td, errno, "unlink");
151 return 1;
152 }
153 }
154
155 flags = O_WRONLY;
156 if (td->o.allow_create)
157 flags |= O_CREAT;
158 if (new_layout)
159 flags |= O_TRUNC;
160
161#ifdef WIN32
162 flags |= _O_BINARY;
163#endif
164
165 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
166 f->fd = open(f->file_name, flags, 0644);
167 if (f->fd < 0) {
168 int err = errno;
169
170 if (err == ENOENT && !td->o.allow_create)
171 log_err("fio: file creation disallowed by "
172 "allow_file_create=0\n");
173 else
174 td_verror(td, err, "open");
175 return 1;
176 }
177
178 fallocate_file(td, f);
179
180 /*
181 * If our jobs don't require regular files initially, we're done.
182 */
183 if (!new_layout)
184 goto done;
185
186 /*
187 * The size will be -1ULL when fill_device is used, so don't truncate
188 * or fallocate this file, just write it
189 */
190 if (!td->o.fill_device) {
191 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
192 (unsigned long long) f->real_file_size);
193 if (ftruncate(f->fd, f->real_file_size) == -1) {
194 if (errno != EFBIG) {
195 td_verror(td, errno, "ftruncate");
196 goto err;
197 }
198 }
199 }
200
201 left = f->real_file_size;
202 bs = td->o.max_bs[DDIR_WRITE];
203 if (bs > left)
204 bs = left;
205
206 b = malloc(bs);
207 if (!b) {
208 td_verror(td, errno, "malloc");
209 goto err;
210 }
211
212 while (left && !td->terminate) {
213 ssize_t r;
214
215 if (bs > left)
216 bs = left;
217
218 fill_io_buffer(td, b, bs, bs);
219
220 r = write(f->fd, b, bs);
221
222 if (r > 0) {
223 left -= r;
224 continue;
225 } else {
226 if (r < 0) {
227 int __e = errno;
228
229 if (__e == ENOSPC) {
230 if (td->o.fill_device)
231 break;
232 log_info("fio: ENOSPC on laying out "
233 "file, stopping\n");
234 }
235 td_verror(td, errno, "write");
236 } else
237 td_verror(td, EIO, "write");
238
239 goto err;
240 }
241 }
242
243 if (td->terminate) {
244 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
245 td_io_unlink_file(td, f);
246 } else if (td->o.create_fsync) {
247 if (fsync(f->fd) < 0) {
248 td_verror(td, errno, "fsync");
249 goto err;
250 }
251 }
252 if (td->o.fill_device && !td_write(td)) {
253 fio_file_clear_size_known(f);
254 if (td_io_get_file_size(td, f))
255 goto err;
256 if (f->io_size > f->real_file_size)
257 f->io_size = f->real_file_size;
258 }
259
260 free(b);
261done:
262 return 0;
263err:
264 close(f->fd);
265 f->fd = -1;
266 if (b)
267 free(b);
268 return 1;
269}
270
271static bool pre_read_file(struct thread_data *td, struct fio_file *f)
272{
273 int r, did_open = 0, old_runstate;
274 unsigned long long left;
275 unsigned long long bs;
276 bool ret = true;
277 char *b;
278
279 if (td_ioengine_flagged(td, FIO_PIPEIO) ||
280 td_ioengine_flagged(td, FIO_NOIO))
281 return true;
282
283 if (f->filetype == FIO_TYPE_CHAR)
284 return true;
285
286 if (!fio_file_open(f)) {
287 if (td->io_ops->open_file(td, f)) {
288 log_err("fio: cannot pre-read, failed to open file\n");
289 return false;
290 }
291 did_open = 1;
292 }
293
294 old_runstate = td_bump_runstate(td, TD_PRE_READING);
295
296 left = f->io_size;
297 bs = td->o.max_bs[DDIR_READ];
298 if (bs > left)
299 bs = left;
300
301 b = malloc(bs);
302 if (!b) {
303 td_verror(td, errno, "malloc");
304 ret = false;
305 goto error;
306 }
307 memset(b, 0, bs);
308
309 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
310 td_verror(td, errno, "lseek");
311 log_err("fio: failed to lseek pre-read file\n");
312 ret = false;
313 goto error;
314 }
315
316 while (left && !td->terminate) {
317 if (bs > left)
318 bs = left;
319
320 r = read(f->fd, b, bs);
321
322 if (r == (int) bs) {
323 left -= bs;
324 continue;
325 } else {
326 td_verror(td, EIO, "pre_read");
327 break;
328 }
329 }
330
331error:
332 td_restore_runstate(td, old_runstate);
333
334 if (did_open)
335 td->io_ops->close_file(td, f);
336
337 free(b);
338 return ret;
339}
340
341unsigned long long get_rand_file_size(struct thread_data *td)
342{
343 unsigned long long ret, sized;
344 uint64_t frand_max;
345 uint64_t r;
346
347 frand_max = rand_max(&td->file_size_state);
348 r = __rand(&td->file_size_state);
349 sized = td->o.file_size_high - td->o.file_size_low;
350 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
351 ret += td->o.file_size_low;
352 ret -= (ret % td->o.rw_min_bs);
353 return ret;
354}
355
356static int file_size(struct thread_data *td, struct fio_file *f)
357{
358 struct stat st;
359
360 if (stat(f->file_name, &st) == -1) {
361 td_verror(td, errno, "fstat");
362 return 1;
363 }
364
365 f->real_file_size = st.st_size;
366 return 0;
367}
368
369static int bdev_size(struct thread_data *td, struct fio_file *f)
370{
371 unsigned long long bytes = 0;
372 int r;
373
374 if (td->io_ops->open_file(td, f)) {
375 log_err("fio: failed opening blockdev %s for size check\n",
376 f->file_name);
377 return 1;
378 }
379
380 r = blockdev_size(f, &bytes);
381 if (r) {
382 td_verror(td, r, "blockdev_size");
383 goto err;
384 }
385
386 if (!bytes) {
387 log_err("%s: zero sized block device?\n", f->file_name);
388 goto err;
389 }
390
391 f->real_file_size = bytes;
392 td->io_ops->close_file(td, f);
393 return 0;
394err:
395 td->io_ops->close_file(td, f);
396 return 1;
397}
398
399static int char_size(struct thread_data *td, struct fio_file *f)
400{
401#ifdef FIO_HAVE_CHARDEV_SIZE
402 unsigned long long bytes = 0;
403 int r;
404
405 if (td->io_ops->open_file(td, f)) {
406 log_err("fio: failed opening chardev %s for size check\n",
407 f->file_name);
408 return 1;
409 }
410
411 r = chardev_size(f, &bytes);
412 if (r) {
413 td_verror(td, r, "chardev_size");
414 goto err;
415 }
416
417 if (!bytes) {
418 log_err("%s: zero sized char device?\n", f->file_name);
419 goto err;
420 }
421
422 f->real_file_size = bytes;
423 td->io_ops->close_file(td, f);
424 return 0;
425err:
426 td->io_ops->close_file(td, f);
427 return 1;
428#else
429 f->real_file_size = -1ULL;
430 return 0;
431#endif
432}
433
434static int get_file_size(struct thread_data *td, struct fio_file *f)
435{
436 int ret = 0;
437
438 if (fio_file_size_known(f))
439 return 0;
440
441 if (f->filetype == FIO_TYPE_FILE)
442 ret = file_size(td, f);
443 else if (f->filetype == FIO_TYPE_BLOCK)
444 ret = bdev_size(td, f);
445 else if (f->filetype == FIO_TYPE_CHAR)
446 ret = char_size(td, f);
447 else {
448 f->real_file_size = -1;
449 log_info("%s: failed to get file size of %s\n", td->o.name,
450 f->file_name);
451 return 1; /* avoid offset extends end error message */
452 }
453
454 /*
455 * Leave ->real_file_size with 0 since it could be expectation
456 * of initial setup for regular files.
457 */
458 if (ret)
459 return ret;
460
461 /*
462 * ->file_offset normally hasn't been initialized yet, so this
463 * is basically always false unless ->real_file_size is -1, but
464 * if ->real_file_size is -1 this message doesn't make sense.
465 * As a result, this message is basically useless.
466 */
467 if (f->file_offset > f->real_file_size) {
468 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
469 (unsigned long long) f->file_offset,
470 (unsigned long long) f->real_file_size);
471 return 1;
472 }
473
474 fio_file_set_size_known(f);
475 return 0;
476}
477
478static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
479 unsigned long long off,
480 unsigned long long len)
481{
482 int errval = 0, ret = 0;
483
484#ifdef CONFIG_ESX
485 return 0;
486#endif
487
488 if (len == -1ULL)
489 len = f->io_size;
490 if (off == -1ULL)
491 off = f->file_offset;
492
493 if (len == -1ULL || off == -1ULL)
494 return 0;
495
496 if (td->io_ops->invalidate) {
497 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
498 f->file_name);
499 ret = td->io_ops->invalidate(td, f);
500 if (ret < 0)
501 errval = -ret;
502 } else if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
503 dprint(FD_IO, "invalidate not supported by ioengine %s\n",
504 td->io_ops->name);
505 } else if (f->filetype == FIO_TYPE_FILE) {
506 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
507 f->file_name, off, len);
508 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
509 if (ret)
510 errval = ret;
511 } else if (f->filetype == FIO_TYPE_BLOCK) {
512 int retry_count = 0;
513
514 dprint(FD_IO, "drop page cache %s\n", f->file_name);
515 ret = blockdev_invalidate_cache(f);
516 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
517 /*
518 * Linux multipath devices reject ioctl while
519 * the maps are being updated. That window can
520 * last tens of milliseconds; we'll try up to
521 * a quarter of a second.
522 */
523 usleep(10000);
524 ret = blockdev_invalidate_cache(f);
525 }
526 if (ret < 0 && errno == EACCES && geteuid()) {
527 if (!fio_did_warn(FIO_WARN_ROOT_FLUSH)) {
528 log_err("fio: only root may flush block "
529 "devices. Cache flush bypassed!\n");
530 }
531 }
532 if (ret < 0)
533 errval = errno;
534 } else if (f->filetype == FIO_TYPE_CHAR ||
535 f->filetype == FIO_TYPE_PIPE) {
536 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
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 flags |= td->o.sync_io;
658 if (td->o.create_on_open && td->o.allow_create)
659 flags |= O_CREAT;
660skip_flags:
661 if (f->filetype != FIO_TYPE_FILE)
662 flags |= FIO_O_NOATIME;
663
664open_again:
665 if (td_write(td)) {
666 if (!read_only)
667 flags |= O_RDWR;
668
669 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
670 flags |= O_CREAT;
671
672 if (is_std)
673 f->fd = dup(STDOUT_FILENO);
674 else
675 from_hash = file_lookup_open(f, flags);
676 } else if (td_read(td)) {
677 if (f->filetype == FIO_TYPE_CHAR && !read_only)
678 flags |= O_RDWR;
679 else
680 flags |= O_RDONLY;
681
682 if (is_std)
683 f->fd = dup(STDIN_FILENO);
684 else
685 from_hash = file_lookup_open(f, flags);
686 } else if (td_trim(td)) {
687 assert(!td_rw(td)); /* should have matched above */
688 if (!read_only)
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 snprintf(buf, FIO_ARRAY_SIZE(buf), "%s", f->file_name);
819
820 if (stat(buf, &sb) < 0) {
821 if (errno != ENOENT)
822 break;
823 strcpy(buf, ".");
824 if (stat(buf, &sb) < 0)
825 break;
826 }
827
828 fm = NULL;
829 flist_for_each(n, &list) {
830 fm = flist_entry(n, struct fio_mount, list);
831 if (fm->key == sb.st_dev)
832 break;
833
834 fm = NULL;
835 }
836
837 if (fm)
838 continue;
839
840 fm = calloc(1, sizeof(*fm));
841 snprintf(fm->__base, FIO_ARRAY_SIZE(fm->__base), "%s", buf);
842 fm->base = basename(fm->__base);
843 fm->key = sb.st_dev;
844 flist_add(&fm->list, &list);
845 }
846
847 flist_for_each_safe(n, tmp, &list) {
848 unsigned long long sz;
849
850 fm = flist_entry(n, struct fio_mount, list);
851 flist_del(&fm->list);
852
853 sz = get_fs_free_size(fm->base);
854 if (sz && sz != -1ULL)
855 ret += sz;
856
857 free(fm);
858 }
859
860 return ret;
861}
862
863uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
864{
865 bool align = false;
866 struct thread_options *o = &td->o;
867 unsigned long long align_bs;
868 unsigned long long offset;
869 unsigned long long increment;
870
871 if (o->file_append && f->filetype == FIO_TYPE_FILE)
872 return f->real_file_size;
873
874 if (o->offset_increment_percent) {
875 assert(!o->offset_increment);
876 increment = o->offset_increment_percent * f->real_file_size / 100;
877 align = true;
878 } else
879 increment = o->offset_increment;
880
881 if (o->start_offset_percent > 0) {
882 /* calculate the raw offset */
883 offset = (f->real_file_size * o->start_offset_percent / 100) +
884 (td->subjob_number * increment);
885
886 align = true;
887 } else {
888 /* start_offset_percent not set */
889 offset = o->start_offset +
890 td->subjob_number * increment;
891 }
892
893 if (align) {
894 /*
895 * if offset_align is provided, use it
896 */
897 if (fio_option_is_set(o, start_offset_align)) {
898 align_bs = o->start_offset_align;
899 } else {
900 /* else take the minimum block size */
901 align_bs = td_min_bs(td);
902 }
903
904 /*
905 * block align the offset at the next available boundary at
906 * ceiling(offset / align_bs) * align_bs
907 */
908 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
909 }
910
911 return offset;
912}
913
914/*
915 * Find longest path component that exists and return its length
916 */
917int longest_existing_path(char *path) {
918 char buf[PATH_MAX];
919 bool done;
920 char *buf_pos;
921 int offset;
922#ifdef WIN32
923 DWORD dwAttr;
924#else
925 struct stat sb;
926#endif
927
928 sprintf(buf, "%s", path);
929 done = false;
930 while (!done) {
931 buf_pos = strrchr(buf, FIO_OS_PATH_SEPARATOR);
932 if (!buf_pos) {
933 done = true;
934 offset = 0;
935 break;
936 }
937
938 *(buf_pos + 1) = '\0';
939
940#ifdef WIN32
941 dwAttr = GetFileAttributesA(buf);
942 if (dwAttr != INVALID_FILE_ATTRIBUTES) {
943 done = true;
944 }
945#else
946 if (stat(buf, &sb) == 0)
947 done = true;
948#endif
949 if (done)
950 offset = buf_pos - buf;
951 else
952 *buf_pos = '\0';
953 }
954
955 return offset;
956}
957
958static bool create_work_dirs(struct thread_data *td, const char *fname)
959{
960 char path[PATH_MAX];
961 char *start, *end;
962 int offset;
963
964 snprintf(path, PATH_MAX, "%s", fname);
965 start = path;
966
967 offset = longest_existing_path(path);
968 end = start + offset;
969 while ((end = strchr(end, FIO_OS_PATH_SEPARATOR)) != NULL) {
970 if (end == start) {
971 end++;
972 continue;
973 }
974 *end = '\0';
975 errno = 0;
976 if (fio_mkdir(path, 0700) && errno != EEXIST) {
977 log_err("fio: failed to create dir (%s): %s\n",
978 start, strerror(errno));
979 return false;
980 }
981 *end = FIO_OS_PATH_SEPARATOR;
982 end++;
983 }
984 td->flags |= TD_F_DIRS_CREATED;
985 return true;
986}
987
988/*
989 * Open the files and setup files sizes, creating files if necessary.
990 */
991int setup_files(struct thread_data *td)
992{
993 unsigned long long total_size, extend_size;
994 struct thread_options *o = &td->o;
995 struct fio_file *f;
996 unsigned int i, nr_fs_extra = 0;
997 int err = 0, need_extend;
998 int old_state;
999 const unsigned long long bs = td_min_bs(td);
1000 uint64_t fs = 0;
1001
1002 dprint(FD_FILE, "setup files\n");
1003
1004 old_state = td_bump_runstate(td, TD_SETTING_UP);
1005
1006 for_each_file(td, f, i) {
1007 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1008 strchr(f->file_name, FIO_OS_PATH_SEPARATOR) &&
1009 !(td->flags & TD_F_DIRS_CREATED) &&
1010 !create_work_dirs(td, f->file_name))
1011 goto err_out;
1012 }
1013
1014 /*
1015 * Find out physical size of files or devices for this thread,
1016 * before we determine I/O size and range of our targets.
1017 * If ioengine defines a setup() method, it's responsible for
1018 * opening the files and setting f->real_file_size to indicate
1019 * the valid range for that file.
1020 */
1021 if (td->io_ops->setup)
1022 err = td->io_ops->setup(td);
1023 else
1024 err = get_file_sizes(td);
1025
1026 if (err)
1027 goto err_out;
1028
1029 if (o->read_iolog_file)
1030 goto done;
1031
1032 /*
1033 * check sizes. if the files/devices do not exist and the size
1034 * isn't passed to fio, abort.
1035 */
1036 total_size = 0;
1037 for_each_file(td, f, i) {
1038 f->fileno = i;
1039 if (f->real_file_size == -1ULL)
1040 total_size = -1ULL;
1041 else
1042 total_size += f->real_file_size;
1043 }
1044
1045 if (o->fill_device)
1046 td->fill_device_size = get_fs_free_counts(td);
1047
1048 /*
1049 * device/file sizes are zero and no size given, punt
1050 */
1051 if ((!total_size || total_size == -1ULL) && !o->size &&
1052 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
1053 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
1054 log_err("%s: you need to specify size=\n", o->name);
1055 td_verror(td, EINVAL, "total_file_size");
1056 goto err_out;
1057 }
1058
1059 /*
1060 * Calculate per-file size and potential extra size for the
1061 * first files, if needed (i.e. if we don't have a fixed size).
1062 */
1063 if (!o->file_size_low && o->nr_files) {
1064 uint64_t all_fs;
1065
1066 fs = o->size / o->nr_files;
1067 all_fs = fs * o->nr_files;
1068
1069 if (all_fs < o->size)
1070 nr_fs_extra = (o->size - all_fs) / bs;
1071 }
1072
1073 /*
1074 * now file sizes are known, so we can set ->io_size. if size= is
1075 * not given, ->io_size is just equal to ->real_file_size. if size
1076 * is given, ->io_size is size / nr_files.
1077 */
1078 extend_size = total_size = 0;
1079 need_extend = 0;
1080 for_each_file(td, f, i) {
1081 f->file_offset = get_start_offset(td, f);
1082
1083 /*
1084 * Update ->io_size depending on options specified.
1085 * ->file_size_low being 0 means filesize option isn't set.
1086 * Non zero ->file_size_low equals ->file_size_high means
1087 * filesize option is set in a fixed size format.
1088 * Non zero ->file_size_low not equals ->file_size_high means
1089 * filesize option is set in a range format.
1090 */
1091 if (!o->file_size_low) {
1092 /*
1093 * no file size or range given, file size is equal to
1094 * total size divided by number of files. If the size
1095 * doesn't divide nicely with the min blocksize,
1096 * make the first files bigger.
1097 */
1098 f->io_size = fs;
1099 if (nr_fs_extra) {
1100 nr_fs_extra--;
1101 f->io_size += bs;
1102 }
1103
1104 /*
1105 * We normally don't come here for regular files, but
1106 * if the result is 0 for a regular file, set it to the
1107 * real file size. This could be size of the existing
1108 * one if it already exists, but otherwise will be set
1109 * to 0. A new file won't be created because
1110 * ->io_size + ->file_offset equals ->real_file_size.
1111 */
1112 if (!f->io_size) {
1113 if (f->file_offset > f->real_file_size)
1114 goto err_offset;
1115 f->io_size = f->real_file_size - f->file_offset;
1116 if (!f->io_size)
1117 log_info("fio: file %s may be ignored\n",
1118 f->file_name);
1119 }
1120 } else if (f->real_file_size < o->file_size_low ||
1121 f->real_file_size > o->file_size_high) {
1122 if (f->file_offset > o->file_size_low)
1123 goto err_offset;
1124 /*
1125 * file size given. if it's fixed, use that. if it's a
1126 * range, generate a random size in-between.
1127 */
1128 if (o->file_size_low == o->file_size_high)
1129 f->io_size = o->file_size_low - f->file_offset;
1130 else {
1131 f->io_size = get_rand_file_size(td)
1132 - f->file_offset;
1133 }
1134 } else
1135 f->io_size = f->real_file_size - f->file_offset;
1136
1137 if (f->io_size == -1ULL)
1138 total_size = -1ULL;
1139 else {
1140 uint64_t io_size;
1141
1142 if (o->size_percent && o->size_percent != 100) {
1143 uint64_t file_size;
1144
1145 file_size = f->io_size + f->file_offset;
1146 f->io_size = (file_size *
1147 o->size_percent) / 100;
1148 if (f->io_size > (file_size - f->file_offset))
1149 f->io_size = file_size - f->file_offset;
1150
1151 f->io_size -= (f->io_size % td_min_bs(td));
1152 }
1153
1154 io_size = f->io_size;
1155 if (o->io_size_percent && o->io_size_percent != 100) {
1156 io_size *= o->io_size_percent;
1157 io_size /= 100;
1158 }
1159
1160 total_size += io_size;
1161 }
1162
1163 if (f->filetype == FIO_TYPE_FILE &&
1164 (f->io_size + f->file_offset) > f->real_file_size) {
1165 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1166 !o->create_on_open) {
1167 need_extend++;
1168 extend_size += (f->io_size + f->file_offset);
1169 fio_file_set_extend(f);
1170 } else if (!td_ioengine_flagged(td, FIO_DISKLESSIO) ||
1171 (td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1172 td_ioengine_flagged(td, FIO_FAKEIO)))
1173 f->real_file_size = f->io_size + f->file_offset;
1174 }
1175 }
1176
1177 if (td->o.block_error_hist) {
1178 int len;
1179
1180 assert(td->o.nr_files == 1); /* checked in fixup_options */
1181 f = td->files[0];
1182 len = f->io_size / td->o.bs[DDIR_TRIM];
1183 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1184 log_err("fio: cannot calculate block histogram with "
1185 "%d trim blocks, maximum %d\n",
1186 len, MAX_NR_BLOCK_INFOS);
1187 td_verror(td, EINVAL, "block_error_hist");
1188 goto err_out;
1189 }
1190
1191 td->ts.nr_block_infos = len;
1192 for (i = 0; i < len; i++)
1193 td->ts.block_infos[i] =
1194 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1195 } else
1196 td->ts.nr_block_infos = 0;
1197
1198 if (!o->size || (total_size && o->size > total_size))
1199 o->size = total_size;
1200
1201 if (o->size < td_min_bs(td)) {
1202 log_err("fio: blocksize is larger than data set range\n");
1203 goto err_out;
1204 }
1205
1206 /*
1207 * See if we need to extend some files, typically needed when our
1208 * target regular files don't exist yet, but our jobs require them
1209 * initially due to read I/Os.
1210 */
1211 if (need_extend) {
1212 temp_stall_ts = 1;
1213 if (output_format & FIO_OUTPUT_NORMAL) {
1214 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1215 o->name,
1216 need_extend > 1 ? "s" : "",
1217 need_extend,
1218 need_extend > 1 ? "s" : "",
1219 need_extend > 1 ? "total " : "",
1220 extend_size >> 20);
1221 }
1222
1223 for_each_file(td, f, i) {
1224 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1225
1226 if (!fio_file_extend(f))
1227 continue;
1228
1229 assert(f->filetype == FIO_TYPE_FILE);
1230 fio_file_clear_extend(f);
1231 if (!o->fill_device) {
1232 old_len = f->real_file_size;
1233 extend_len = f->io_size + f->file_offset -
1234 old_len;
1235 }
1236 f->real_file_size = (f->io_size + f->file_offset);
1237 err = extend_file(td, f);
1238 if (err)
1239 break;
1240
1241 err = __file_invalidate_cache(td, f, old_len,
1242 extend_len);
1243
1244 /*
1245 * Shut up static checker
1246 */
1247 if (f->fd != -1)
1248 close(f->fd);
1249
1250 f->fd = -1;
1251 if (err)
1252 break;
1253 }
1254 temp_stall_ts = 0;
1255 }
1256
1257 if (err)
1258 goto err_out;
1259
1260 /*
1261 * iolog already set the total io size, if we read back
1262 * stored entries.
1263 */
1264 if (!o->read_iolog_file) {
1265 if (o->io_size)
1266 td->total_io_size = o->io_size * o->loops;
1267 else
1268 td->total_io_size = o->size * o->loops;
1269 }
1270
1271done:
1272 if (o->create_only)
1273 td->done = 1;
1274
1275 td_restore_runstate(td, old_state);
1276
1277 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1278 err = zbd_setup_files(td);
1279 if (err)
1280 goto err_out;
1281 }
1282 return 0;
1283
1284err_offset:
1285 log_err("%s: you need to specify valid offset=\n", o->name);
1286err_out:
1287 td_restore_runstate(td, old_state);
1288 return 1;
1289}
1290
1291bool pre_read_files(struct thread_data *td)
1292{
1293 struct fio_file *f;
1294 unsigned int i;
1295
1296 dprint(FD_FILE, "pre_read files\n");
1297
1298 for_each_file(td, f, i) {
1299 if (!pre_read_file(td, f))
1300 return false;
1301 }
1302
1303 return true;
1304}
1305
1306static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1307{
1308 unsigned int range_size, seed;
1309 uint64_t nranges;
1310 uint64_t fsize;
1311
1312 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1313 fsize = min(f->real_file_size, f->io_size);
1314
1315 nranges = (fsize + range_size - 1ULL) / range_size;
1316
1317 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1318 if (!td->o.rand_repeatable)
1319 seed = td->rand_seeds[4];
1320
1321 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1322 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, td->o.random_center.u.f, seed);
1323 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1324 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, td->o.random_center.u.f, seed);
1325 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1326 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, td->o.random_center.u.f, seed);
1327}
1328
1329static bool init_rand_distribution(struct thread_data *td)
1330{
1331 struct fio_file *f;
1332 unsigned int i;
1333 int state;
1334
1335 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM ||
1336 td->o.random_distribution == FIO_RAND_DIST_ZONED ||
1337 td->o.random_distribution == FIO_RAND_DIST_ZONED_ABS)
1338 return false;
1339
1340 state = td_bump_runstate(td, TD_SETTING_UP);
1341
1342 for_each_file(td, f, i)
1343 __init_rand_distribution(td, f);
1344
1345 td_restore_runstate(td, state);
1346 return true;
1347}
1348
1349/*
1350 * Check if the number of blocks exceeds the randomness capability of
1351 * the selected generator. Tausworthe is 32-bit, the others are fullly
1352 * 64-bit capable.
1353 */
1354static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1355 uint64_t blocks)
1356{
1357 if (blocks <= FRAND32_MAX)
1358 return 0;
1359 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1360 return 0;
1361
1362 /*
1363 * If the user hasn't specified a random generator, switch
1364 * to tausworthe64 with informational warning. If the user did
1365 * specify one, just warn.
1366 */
1367 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1368 f->file_name);
1369
1370 if (!fio_option_is_set(&td->o, random_generator)) {
1371 log_info("fio: Switching to tausworthe64. Use the "
1372 "random_generator= option to get rid of this "
1373 "warning.\n");
1374 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1375 return 0;
1376 }
1377
1378 /*
1379 * Just make this information to avoid breaking scripts.
1380 */
1381 log_info("fio: Use the random_generator= option to switch to lfsr or "
1382 "tausworthe64.\n");
1383 return 0;
1384}
1385
1386bool init_random_map(struct thread_data *td)
1387{
1388 unsigned long long blocks;
1389 struct fio_file *f;
1390 unsigned int i;
1391
1392 if (init_rand_distribution(td))
1393 return true;
1394 if (!td_random(td))
1395 return true;
1396
1397 for_each_file(td, f, i) {
1398 uint64_t fsize = min(f->real_file_size, f->io_size);
1399
1400 if (td->o.zone_mode == ZONE_MODE_STRIDED)
1401 fsize = td->o.zone_range;
1402
1403 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1404
1405 if (check_rand_gen_limits(td, f, blocks))
1406 return false;
1407
1408 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1409 uint64_t seed;
1410
1411 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1412
1413 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1414 fio_file_set_lfsr(f);
1415 continue;
1416 } else {
1417 log_err("fio: failed initializing LFSR\n");
1418 return false;
1419 }
1420 } else if (!td->o.norandommap) {
1421 f->io_axmap = axmap_new(blocks);
1422 if (f->io_axmap) {
1423 fio_file_set_axmap(f);
1424 continue;
1425 }
1426 } else if (td->o.norandommap)
1427 continue;
1428
1429 if (!td->o.softrandommap) {
1430 log_err("fio: failed allocating random map. If running"
1431 " a large number of jobs, try the 'norandommap'"
1432 " option or set 'softrandommap'. Or give"
1433 " a larger --alloc-size to fio.\n");
1434 return false;
1435 }
1436
1437 log_info("fio: file %s failed allocating random map. Running "
1438 "job without.\n", f->file_name);
1439 }
1440
1441 return true;
1442}
1443
1444void close_files(struct thread_data *td)
1445{
1446 struct fio_file *f;
1447 unsigned int i;
1448
1449 for_each_file(td, f, i) {
1450 if (fio_file_open(f))
1451 td_io_close_file(td, f);
1452 }
1453}
1454
1455void fio_file_free(struct fio_file *f)
1456{
1457 if (fio_file_axmap(f))
1458 axmap_free(f->io_axmap);
1459 if (!fio_file_smalloc(f)) {
1460 free(f->file_name);
1461 free(f);
1462 } else {
1463 sfree(f->file_name);
1464 sfree(f);
1465 }
1466}
1467
1468void close_and_free_files(struct thread_data *td)
1469{
1470 struct fio_file *f;
1471 unsigned int i;
1472
1473 dprint(FD_FILE, "close files\n");
1474
1475 for_each_file(td, f, i) {
1476 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1477 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1478 td_io_unlink_file(td, f);
1479 }
1480
1481 if (fio_file_open(f))
1482 td_io_close_file(td, f);
1483
1484 remove_file_hash(f);
1485
1486 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1487 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1488 td_io_unlink_file(td, f);
1489 }
1490
1491 zbd_close_file(f);
1492 fio_file_free(f);
1493 }
1494
1495 td->o.filename = NULL;
1496 free(td->files);
1497 free(td->file_locks);
1498 td->files_index = 0;
1499 td->files = NULL;
1500 td->file_locks = NULL;
1501 td->o.file_lock_mode = FILE_LOCK_NONE;
1502 td->o.nr_files = 0;
1503}
1504
1505static void get_file_type(struct fio_file *f)
1506{
1507 struct stat sb;
1508
1509 if (!strcmp(f->file_name, "-"))
1510 f->filetype = FIO_TYPE_PIPE;
1511 else
1512 f->filetype = FIO_TYPE_FILE;
1513
1514#ifdef WIN32
1515 /* \\.\ is the device namespace in Windows, where every file is
1516 * a block device */
1517 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1518 f->filetype = FIO_TYPE_BLOCK;
1519#endif
1520
1521 if (!stat(f->file_name, &sb)) {
1522 if (S_ISBLK(sb.st_mode))
1523 f->filetype = FIO_TYPE_BLOCK;
1524 else if (S_ISCHR(sb.st_mode))
1525 f->filetype = FIO_TYPE_CHAR;
1526 else if (S_ISFIFO(sb.st_mode))
1527 f->filetype = FIO_TYPE_PIPE;
1528 }
1529}
1530
1531static bool __is_already_allocated(const char *fname, bool set)
1532{
1533 struct flist_head *entry;
1534 bool ret;
1535
1536 ret = file_bloom_exists(fname, set);
1537 if (!ret)
1538 return ret;
1539
1540 flist_for_each(entry, &filename_list) {
1541 struct file_name *fn;
1542
1543 fn = flist_entry(entry, struct file_name, list);
1544
1545 if (!strcmp(fn->filename, fname))
1546 return true;
1547 }
1548
1549 return false;
1550}
1551
1552static bool is_already_allocated(const char *fname)
1553{
1554 bool ret;
1555
1556 fio_file_hash_lock();
1557 ret = __is_already_allocated(fname, false);
1558 fio_file_hash_unlock();
1559
1560 return ret;
1561}
1562
1563static void set_already_allocated(const char *fname)
1564{
1565 struct file_name *fn;
1566
1567 fn = malloc(sizeof(struct file_name));
1568 fn->filename = strdup(fname);
1569
1570 fio_file_hash_lock();
1571 if (!__is_already_allocated(fname, true)) {
1572 flist_add_tail(&fn->list, &filename_list);
1573 fn = NULL;
1574 }
1575 fio_file_hash_unlock();
1576
1577 if (fn) {
1578 free(fn->filename);
1579 free(fn);
1580 }
1581}
1582
1583static void free_already_allocated(void)
1584{
1585 struct flist_head *entry, *tmp;
1586 struct file_name *fn;
1587
1588 if (flist_empty(&filename_list))
1589 return;
1590
1591 fio_file_hash_lock();
1592 flist_for_each_safe(entry, tmp, &filename_list) {
1593 fn = flist_entry(entry, struct file_name, list);
1594 free(fn->filename);
1595 flist_del(&fn->list);
1596 free(fn);
1597 }
1598
1599 fio_file_hash_unlock();
1600}
1601
1602static struct fio_file *alloc_new_file(struct thread_data *td)
1603{
1604 struct fio_file *f;
1605
1606 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1607 f = calloc(1, sizeof(*f));
1608 else
1609 f = scalloc(1, sizeof(*f));
1610 if (!f) {
1611 assert(0);
1612 return NULL;
1613 }
1614
1615 f->fd = -1;
1616 f->shadow_fd = -1;
1617 fio_file_reset(td, f);
1618 if (!td_ioengine_flagged(td, FIO_NOFILEHASH))
1619 fio_file_set_smalloc(f);
1620 return f;
1621}
1622
1623bool exists_and_not_regfile(const char *filename)
1624{
1625 struct stat sb;
1626
1627 if (lstat(filename, &sb) == -1)
1628 return false;
1629
1630#ifndef WIN32 /* NOT Windows */
1631 if (S_ISREG(sb.st_mode))
1632 return false;
1633#else
1634 /* \\.\ is the device namespace in Windows, where every file
1635 * is a device node */
1636 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1637 return false;
1638#endif
1639
1640 return true;
1641}
1642
1643int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1644{
1645 int cur_files = td->files_index;
1646 char file_name[PATH_MAX];
1647 struct fio_file *f;
1648 int len = 0;
1649
1650 dprint(FD_FILE, "add file %s\n", fname);
1651
1652 if (td->o.directory)
1653 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1654 td->o.unique_filename);
1655
1656 sprintf(file_name + len, "%s", fname);
1657
1658 /* clean cloned siblings using existing files */
1659 if (numjob && is_already_allocated(file_name) &&
1660 !exists_and_not_regfile(fname))
1661 return 0;
1662
1663 f = alloc_new_file(td);
1664
1665 if (td->files_size <= td->files_index) {
1666 unsigned int new_size = td->o.nr_files + 1;
1667
1668 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1669
1670 td->files = realloc(td->files, new_size * sizeof(f));
1671 if (td->files == NULL) {
1672 log_err("fio: realloc OOM\n");
1673 assert(0);
1674 }
1675 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1676 td->file_locks = realloc(td->file_locks, new_size);
1677 if (!td->file_locks) {
1678 log_err("fio: realloc OOM\n");
1679 assert(0);
1680 }
1681 td->file_locks[cur_files] = FILE_LOCK_NONE;
1682 }
1683 td->files_size = new_size;
1684 }
1685 td->files[cur_files] = f;
1686 f->fileno = cur_files;
1687
1688 /*
1689 * init function, io engine may not be loaded yet
1690 */
1691 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1692 f->real_file_size = -1ULL;
1693
1694 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1695 f->file_name = strdup(file_name);
1696 else
1697 f->file_name = smalloc_strdup(file_name);
1698
1699 /* can't handle smalloc failure from here */
1700 assert(f->file_name);
1701
1702 get_file_type(f);
1703
1704 switch (td->o.file_lock_mode) {
1705 case FILE_LOCK_NONE:
1706 break;
1707 case FILE_LOCK_READWRITE:
1708 f->rwlock = fio_rwlock_init();
1709 break;
1710 case FILE_LOCK_EXCLUSIVE:
1711 f->lock = fio_sem_init(FIO_SEM_UNLOCKED);
1712 break;
1713 default:
1714 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1715 assert(0);
1716 }
1717
1718 td->files_index++;
1719
1720 if (td->o.numjobs > 1)
1721 set_already_allocated(file_name);
1722
1723 if (inc)
1724 td->o.nr_files++;
1725
1726 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1727 cur_files);
1728
1729 return cur_files;
1730}
1731
1732int add_file_exclusive(struct thread_data *td, const char *fname)
1733{
1734 struct fio_file *f;
1735 unsigned int i;
1736
1737 for_each_file(td, f, i) {
1738 if (!strcmp(f->file_name, fname))
1739 return i;
1740 }
1741
1742 return add_file(td, fname, 0, 1);
1743}
1744
1745void get_file(struct fio_file *f)
1746{
1747 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1748 assert(fio_file_open(f));
1749 f->references++;
1750}
1751
1752int put_file(struct thread_data *td, struct fio_file *f)
1753{
1754 int f_ret = 0, ret = 0;
1755
1756 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1757
1758 if (!fio_file_open(f)) {
1759 assert(f->fd == -1);
1760 return 0;
1761 }
1762
1763 assert(f->references);
1764 if (--f->references)
1765 return 0;
1766
1767 disk_util_dec(f->du);
1768
1769 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1770 unlock_file_all(td, f);
1771
1772 if (should_fsync(td) && td->o.fsync_on_close) {
1773 f_ret = fsync(f->fd);
1774 if (f_ret < 0)
1775 f_ret = errno;
1776 }
1777
1778 if (td->io_ops->close_file)
1779 ret = td->io_ops->close_file(td, f);
1780
1781 if (!ret)
1782 ret = f_ret;
1783
1784 td->nr_open_files--;
1785 fio_file_clear_closing(f);
1786 fio_file_clear_open(f);
1787 assert(f->fd == -1);
1788 return ret;
1789}
1790
1791void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1792{
1793 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1794 return;
1795
1796 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1797 if (ddir == DDIR_READ)
1798 fio_rwlock_read(f->rwlock);
1799 else
1800 fio_rwlock_write(f->rwlock);
1801 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1802 fio_sem_down(f->lock);
1803
1804 td->file_locks[f->fileno] = td->o.file_lock_mode;
1805}
1806
1807void unlock_file(struct thread_data *td, struct fio_file *f)
1808{
1809 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1810 return;
1811
1812 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1813 fio_rwlock_unlock(f->rwlock);
1814 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1815 fio_sem_up(f->lock);
1816
1817 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1818}
1819
1820void unlock_file_all(struct thread_data *td, struct fio_file *f)
1821{
1822 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1823 return;
1824 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1825 unlock_file(td, f);
1826}
1827
1828static bool recurse_dir(struct thread_data *td, const char *dirname)
1829{
1830 struct dirent *dir;
1831 bool ret = false;
1832 DIR *D;
1833
1834 D = opendir(dirname);
1835 if (!D) {
1836 char buf[FIO_VERROR_SIZE];
1837
1838 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1839 td_verror(td, errno, buf);
1840 return true;
1841 }
1842
1843 while ((dir = readdir(D)) != NULL) {
1844 char full_path[PATH_MAX];
1845 struct stat sb;
1846
1847 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1848 continue;
1849
1850 sprintf(full_path, "%s%c%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1851
1852 if (lstat(full_path, &sb) == -1) {
1853 if (errno != ENOENT) {
1854 td_verror(td, errno, "stat");
1855 ret = true;
1856 break;
1857 }
1858 }
1859
1860 if (S_ISREG(sb.st_mode)) {
1861 add_file(td, full_path, 0, 1);
1862 continue;
1863 }
1864 if (!S_ISDIR(sb.st_mode))
1865 continue;
1866
1867 ret = recurse_dir(td, full_path);
1868 if (ret)
1869 break;
1870 }
1871
1872 closedir(D);
1873 return ret;
1874}
1875
1876int add_dir_files(struct thread_data *td, const char *path)
1877{
1878 int ret = recurse_dir(td, path);
1879
1880 if (!ret)
1881 log_info("fio: opendir added %d files\n", td->o.nr_files);
1882
1883 return ret;
1884}
1885
1886void dup_files(struct thread_data *td, struct thread_data *org)
1887{
1888 struct fio_file *f;
1889 unsigned int i;
1890
1891 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1892
1893 if (!org->files)
1894 return;
1895
1896 td->files = malloc(org->files_index * sizeof(f));
1897
1898 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1899 td->file_locks = malloc(org->files_index);
1900
1901 for_each_file(org, f, i) {
1902 struct fio_file *__f;
1903
1904 __f = alloc_new_file(td);
1905
1906 if (f->file_name) {
1907 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1908 __f->file_name = strdup(f->file_name);
1909 else
1910 __f->file_name = smalloc_strdup(f->file_name);
1911
1912 /* can't handle smalloc failure from here */
1913 assert(__f->file_name);
1914 __f->filetype = f->filetype;
1915 }
1916
1917 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1918 __f->lock = f->lock;
1919 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1920 __f->rwlock = f->rwlock;
1921
1922 td->files[i] = __f;
1923 }
1924}
1925
1926/*
1927 * Returns the index that matches the filename, or -1 if not there
1928 */
1929int get_fileno(struct thread_data *td, const char *fname)
1930{
1931 struct fio_file *f;
1932 unsigned int i;
1933
1934 for_each_file(td, f, i)
1935 if (!strcmp(f->file_name, fname))
1936 return i;
1937
1938 return -1;
1939}
1940
1941/*
1942 * For log usage, where we add/open/close files automatically
1943 */
1944void free_release_files(struct thread_data *td)
1945{
1946 close_files(td);
1947 td->o.nr_files = 0;
1948 td->o.open_files = 0;
1949 td->files_index = 0;
1950}
1951
1952void fio_file_reset(struct thread_data *td, struct fio_file *f)
1953{
1954 int i;
1955
1956 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1957 f->last_pos[i] = f->file_offset;
1958 f->last_start[i] = -1ULL;
1959 }
1960
1961 if (fio_file_axmap(f))
1962 axmap_reset(f->io_axmap);
1963 else if (fio_file_lfsr(f))
1964 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1965
1966 zbd_file_reset(td, f);
1967}
1968
1969bool fio_files_done(struct thread_data *td)
1970{
1971 struct fio_file *f;
1972 unsigned int i;
1973
1974 for_each_file(td, f, i)
1975 if (!fio_file_done(f))
1976 return false;
1977
1978 return true;
1979}
1980
1981/* free memory used in initialization phase only */
1982void filesetup_mem_free(void)
1983{
1984 free_already_allocated();
1985}
1986
1987/*
1988 * This function is for platforms which support direct I/O but not O_DIRECT.
1989 */
1990int fio_set_directio(struct thread_data *td, struct fio_file *f)
1991{
1992#ifdef FIO_OS_DIRECTIO
1993 int ret = fio_set_odirect(f);
1994
1995 if (ret) {
1996 td_verror(td, ret, "fio_set_directio");
1997#if defined(__sun__)
1998 if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
1999 log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
2000 } else {
2001 log_err("fio: the file system does not seem to support direct IO\n");
2002 }
2003#else
2004 log_err("fio: the file system does not seem to support direct IO\n");
2005#endif
2006 return -1;
2007 }
2008
2009 return 0;
2010#else
2011 log_err("fio: direct IO is not supported on this host operating system\n");
2012 return -1;
2013#endif
2014}
fio - Flexible IO Tester