969e7cc0a70e4a06ce6c287f6f88dcc8d0c87b68
[fio.git] / filesetup.c
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
23 static int root_warn;
24
25 static FLIST_HEAD(filename_list);
26
27 static inline void clear_error(struct thread_data *td)
28 {
29         td->error = 0;
30         td->verror[0] = '\0';
31 }
32
33 /*
34  * Leaves f->fd open on success, caller must close
35  */
36 static int extend_file(struct thread_data *td, struct fio_file *f)
37 {
38         int r, new_layout = 0, unlink_file = 0, flags;
39         unsigned long long left;
40         unsigned int bs;
41         char *b = NULL;
42
43         if (read_only) {
44                 log_err("fio: refusing extend of file due to read-only\n");
45                 return 0;
46         }
47
48         /*
49          * check if we need to lay the file out complete again. fio
50          * does that for operations involving reads, or for writes
51          * where overwrite is set
52          */
53         if (td_read(td) ||
54            (td_write(td) && td->o.overwrite && !td->o.file_append) ||
55             (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
56                 new_layout = 1;
57         if (td_write(td) && !td->o.overwrite && !td->o.file_append)
58                 unlink_file = 1;
59
60         if (unlink_file || new_layout) {
61                 int ret;
62
63                 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
64
65                 ret = td_io_unlink_file(td, f);
66                 if (ret != 0 && ret != ENOENT) {
67                         td_verror(td, errno, "unlink");
68                         return 1;
69                 }
70         }
71
72         flags = O_WRONLY;
73         if (td->o.allow_create)
74                 flags |= O_CREAT;
75         if (new_layout)
76                 flags |= O_TRUNC;
77
78 #ifdef WIN32
79         flags |= _O_BINARY;
80 #endif
81
82         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
83         f->fd = open(f->file_name, flags, 0644);
84         if (f->fd < 0) {
85                 int err = errno;
86
87                 if (err == ENOENT && !td->o.allow_create)
88                         log_err("fio: file creation disallowed by "
89                                         "allow_file_create=0\n");
90                 else
91                         td_verror(td, err, "open");
92                 return 1;
93         }
94
95 #ifdef CONFIG_POSIX_FALLOCATE
96         if (!td->o.fill_device) {
97                 switch (td->o.fallocate_mode) {
98                 case FIO_FALLOCATE_NONE:
99                         break;
100                 case FIO_FALLOCATE_POSIX:
101                         dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
102                                  f->file_name,
103                                  (unsigned long long) f->real_file_size);
104
105                         r = posix_fallocate(f->fd, 0, f->real_file_size);
106                         if (r > 0) {
107                                 log_err("fio: posix_fallocate fails: %s\n",
108                                                 strerror(r));
109                         }
110                         break;
111 #ifdef CONFIG_LINUX_FALLOCATE
112                 case FIO_FALLOCATE_KEEP_SIZE:
113                         dprint(FD_FILE,
114                                 "fallocate(FALLOC_FL_KEEP_SIZE) "
115                                 "file %s size %llu\n", f->file_name,
116                                 (unsigned long long) f->real_file_size);
117
118                         r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
119                                         f->real_file_size);
120                         if (r != 0)
121                                 td_verror(td, errno, "fallocate");
122
123                         break;
124 #endif /* CONFIG_LINUX_FALLOCATE */
125                 default:
126                         log_err("fio: unknown fallocate mode: %d\n",
127                                 td->o.fallocate_mode);
128                         assert(0);
129                 }
130         }
131 #endif /* CONFIG_POSIX_FALLOCATE */
132
133         if (!new_layout)
134                 goto done;
135
136         /*
137          * The size will be -1ULL when fill_device is used, so don't truncate
138          * or fallocate this file, just write it
139          */
140         if (!td->o.fill_device) {
141                 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
142                                         (unsigned long long) f->real_file_size);
143                 if (ftruncate(f->fd, f->real_file_size) == -1) {
144                         if (errno != EFBIG) {
145                                 td_verror(td, errno, "ftruncate");
146                                 goto err;
147                         }
148                 }
149         }
150
151         b = malloc(td->o.max_bs[DDIR_WRITE]);
152
153         left = f->real_file_size;
154         while (left && !td->terminate) {
155                 bs = td->o.max_bs[DDIR_WRITE];
156                 if (bs > left)
157                         bs = left;
158
159                 fill_io_buffer(td, b, bs, bs);
160
161                 r = write(f->fd, b, bs);
162
163                 if (r > 0) {
164                         left -= r;
165                         continue;
166                 } else {
167                         if (r < 0) {
168                                 int __e = errno;
169
170                                 if (__e == ENOSPC) {
171                                         if (td->o.fill_device)
172                                                 break;
173                                         log_info("fio: ENOSPC on laying out "
174                                                  "file, stopping\n");
175                                         break;
176                                 }
177                                 td_verror(td, errno, "write");
178                         } else
179                                 td_verror(td, EIO, "write");
180
181                         break;
182                 }
183         }
184
185         if (td->terminate) {
186                 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
187                 td_io_unlink_file(td, f);
188         } else if (td->o.create_fsync) {
189                 if (fsync(f->fd) < 0) {
190                         td_verror(td, errno, "fsync");
191                         goto err;
192                 }
193         }
194         if (td->o.fill_device && !td_write(td)) {
195                 fio_file_clear_size_known(f);
196                 if (td_io_get_file_size(td, f))
197                         goto err;
198                 if (f->io_size > f->real_file_size)
199                         f->io_size = f->real_file_size;
200         }
201
202         free(b);
203 done:
204         return 0;
205 err:
206         close(f->fd);
207         f->fd = -1;
208         if (b)
209                 free(b);
210         return 1;
211 }
212
213 static int pre_read_file(struct thread_data *td, struct fio_file *f)
214 {
215         int ret = 0, r, did_open = 0, old_runstate;
216         unsigned long long left;
217         unsigned int bs;
218         char *b;
219
220         if (td_ioengine_flagged(td, FIO_PIPEIO))
221                 return 0;
222
223         if (!fio_file_open(f)) {
224                 if (td->io_ops->open_file(td, f)) {
225                         log_err("fio: cannot pre-read, failed to open file\n");
226                         return 1;
227                 }
228                 did_open = 1;
229         }
230
231         old_runstate = td_bump_runstate(td, TD_PRE_READING);
232
233         bs = td->o.max_bs[DDIR_READ];
234         b = malloc(bs);
235         memset(b, 0, bs);
236
237         if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
238                 td_verror(td, errno, "lseek");
239                 log_err("fio: failed to lseek pre-read file\n");
240                 ret = 1;
241                 goto error;
242         }
243
244         left = f->io_size;
245
246         while (left && !td->terminate) {
247                 if (bs > left)
248                         bs = left;
249
250                 r = read(f->fd, b, bs);
251
252                 if (r == (int) bs) {
253                         left -= bs;
254                         continue;
255                 } else {
256                         td_verror(td, EIO, "pre_read");
257                         break;
258                 }
259         }
260
261 error:
262         td_restore_runstate(td, old_runstate);
263
264         if (did_open)
265                 td->io_ops->close_file(td, f);
266
267         free(b);
268         return ret;
269 }
270
271 unsigned long long get_rand_file_size(struct thread_data *td)
272 {
273         unsigned long long ret, sized;
274         uint64_t frand_max;
275         unsigned long r;
276
277         frand_max = rand_max(&td->file_size_state);
278         r = __rand(&td->file_size_state);
279         sized = td->o.file_size_high - td->o.file_size_low;
280         ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
281         ret += td->o.file_size_low;
282         ret -= (ret % td->o.rw_min_bs);
283         return ret;
284 }
285
286 static int file_size(struct thread_data *td, struct fio_file *f)
287 {
288         struct stat st;
289
290         if (stat(f->file_name, &st) == -1) {
291                 td_verror(td, errno, "fstat");
292                 return 1;
293         }
294
295         f->real_file_size = st.st_size;
296         return 0;
297 }
298
299 static int bdev_size(struct thread_data *td, struct fio_file *f)
300 {
301         unsigned long long bytes = 0;
302         int r;
303
304         if (td->io_ops->open_file(td, f)) {
305                 log_err("fio: failed opening blockdev %s for size check\n",
306                         f->file_name);
307                 return 1;
308         }
309
310         r = blockdev_size(f, &bytes);
311         if (r) {
312                 td_verror(td, r, "blockdev_size");
313                 goto err;
314         }
315
316         if (!bytes) {
317                 log_err("%s: zero sized block device?\n", f->file_name);
318                 goto err;
319         }
320
321         f->real_file_size = bytes;
322         td->io_ops->close_file(td, f);
323         return 0;
324 err:
325         td->io_ops->close_file(td, f);
326         return 1;
327 }
328
329 static int char_size(struct thread_data *td, struct fio_file *f)
330 {
331 #ifdef FIO_HAVE_CHARDEV_SIZE
332         unsigned long long bytes = 0;
333         int r;
334
335         if (td->io_ops->open_file(td, f)) {
336                 log_err("fio: failed opening chardev %s for size check\n",
337                         f->file_name);
338                 return 1;
339         }
340
341         r = chardev_size(f, &bytes);
342         if (r) {
343                 td_verror(td, r, "chardev_size");
344                 goto err;
345         }
346
347         if (!bytes) {
348                 log_err("%s: zero sized char device?\n", f->file_name);
349                 goto err;
350         }
351
352         f->real_file_size = bytes;
353         td->io_ops->close_file(td, f);
354         return 0;
355 err:
356         td->io_ops->close_file(td, f);
357         return 1;
358 #else
359         f->real_file_size = -1ULL;
360         return 0;
361 #endif
362 }
363
364 static int get_file_size(struct thread_data *td, struct fio_file *f)
365 {
366         int ret = 0;
367
368         if (fio_file_size_known(f))
369                 return 0;
370
371         if (f->filetype == FIO_TYPE_FILE)
372                 ret = file_size(td, f);
373         else if (f->filetype == FIO_TYPE_BD)
374                 ret = bdev_size(td, f);
375         else if (f->filetype == FIO_TYPE_CHAR)
376                 ret = char_size(td, f);
377         else
378                 f->real_file_size = -1;
379
380         if (ret)
381                 return ret;
382
383         if (f->file_offset > f->real_file_size) {
384                 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
385                                         (unsigned long long) f->file_offset,
386                                         (unsigned long long) f->real_file_size);
387                 return 1;
388         }
389
390         fio_file_set_size_known(f);
391         return 0;
392 }
393
394 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
395                                    unsigned long long off,
396                                    unsigned long long len)
397 {
398         int errval = 0, ret = 0;
399
400 #ifdef CONFIG_ESX
401         return 0;
402 #endif
403
404         if (len == -1ULL)
405                 len = f->io_size;
406         if (off == -1ULL)
407                 off = f->file_offset;
408
409         if (len == -1ULL || off == -1ULL)
410                 return 0;
411
412         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
413                                                                 len);
414
415         if (td->io_ops->invalidate) {
416                 ret = td->io_ops->invalidate(td, f);
417                 if (ret < 0)
418                         errval = ret;
419         } else if (f->filetype == FIO_TYPE_FILE) {
420                 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
421                 if (ret)
422                         errval = ret;
423         } else if (f->filetype == FIO_TYPE_BD) {
424                 int retry_count = 0;
425
426                 ret = blockdev_invalidate_cache(f);
427                 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
428                         /*
429                          * Linux multipath devices reject ioctl while
430                          * the maps are being updated. That window can
431                          * last tens of milliseconds; we'll try up to
432                          * a quarter of a second.
433                          */
434                         usleep(10000);
435                         ret = blockdev_invalidate_cache(f);
436                 }
437                 if (ret < 0 && errno == EACCES && geteuid()) {
438                         if (!root_warn) {
439                                 log_err("fio: only root may flush block "
440                                         "devices. Cache flush bypassed!\n");
441                                 root_warn = 1;
442                         }
443                         ret = 0;
444                 }
445                 if (ret < 0)
446                         errval = errno;
447         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
448                 ret = 0;
449
450         /*
451          * Cache flushing isn't a fatal condition, and we know it will
452          * happen on some platforms where we don't have the proper
453          * function to flush eg block device caches. So just warn and
454          * continue on our way.
455          */
456         if (errval)
457                 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
458
459         return 0;
460
461 }
462
463 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
464 {
465         if (!fio_file_open(f))
466                 return 0;
467
468         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
469 }
470
471 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
472 {
473         int ret = 0;
474
475         dprint(FD_FILE, "fd close %s\n", f->file_name);
476
477         remove_file_hash(f);
478
479         if (close(f->fd) < 0)
480                 ret = errno;
481
482         f->fd = -1;
483
484         if (f->shadow_fd != -1) {
485                 close(f->shadow_fd);
486                 f->shadow_fd = -1;
487         }
488
489         f->engine_data = 0;
490         return ret;
491 }
492
493 int file_lookup_open(struct fio_file *f, int flags)
494 {
495         struct fio_file *__f;
496         int from_hash;
497
498         __f = lookup_file_hash(f->file_name);
499         if (__f) {
500                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
501                 /*
502                  * racy, need the __f->lock locked
503                  */
504                 f->lock = __f->lock;
505                 from_hash = 1;
506         } else {
507                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
508                 from_hash = 0;
509         }
510
511 #ifdef WIN32
512         flags |= _O_BINARY;
513 #endif
514
515         f->fd = open(f->file_name, flags, 0600);
516         return from_hash;
517 }
518
519 static int file_close_shadow_fds(struct thread_data *td)
520 {
521         struct fio_file *f;
522         int num_closed = 0;
523         unsigned int i;
524
525         for_each_file(td, f, i) {
526                 if (f->shadow_fd == -1)
527                         continue;
528
529                 close(f->shadow_fd);
530                 f->shadow_fd = -1;
531                 num_closed++;
532         }
533
534         return num_closed;
535 }
536
537 int generic_open_file(struct thread_data *td, struct fio_file *f)
538 {
539         int is_std = 0;
540         int flags = 0;
541         int from_hash = 0;
542
543         dprint(FD_FILE, "fd open %s\n", f->file_name);
544
545         if (!strcmp(f->file_name, "-")) {
546                 if (td_rw(td)) {
547                         log_err("fio: can't read/write to stdin/out\n");
548                         return 1;
549                 }
550                 is_std = 1;
551
552                 /*
553                  * move output logging to stderr, if we are writing to stdout
554                  */
555                 if (td_write(td))
556                         f_out = stderr;
557         }
558
559         if (td_trim(td))
560                 goto skip_flags;
561         if (td->o.odirect)
562                 flags |= OS_O_DIRECT;
563         if (td->o.oatomic) {
564                 if (!FIO_O_ATOMIC) {
565                         td_verror(td, EINVAL, "OS does not support atomic IO");
566                         return 1;
567                 }
568                 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
569         }
570         if (td->o.sync_io)
571                 flags |= O_SYNC;
572         if (td->o.create_on_open && td->o.allow_create)
573                 flags |= O_CREAT;
574 skip_flags:
575         if (f->filetype != FIO_TYPE_FILE)
576                 flags |= FIO_O_NOATIME;
577
578 open_again:
579         if (td_write(td)) {
580                 if (!read_only)
581                         flags |= O_RDWR;
582
583                 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
584                         flags |= O_CREAT;
585
586                 if (is_std)
587                         f->fd = dup(STDOUT_FILENO);
588                 else
589                         from_hash = file_lookup_open(f, flags);
590         } else if (td_read(td)) {
591                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
592                         flags |= O_RDWR;
593                 else
594                         flags |= O_RDONLY;
595
596                 if (is_std)
597                         f->fd = dup(STDIN_FILENO);
598                 else
599                         from_hash = file_lookup_open(f, flags);
600         } else { //td trim
601                 flags |= O_RDWR;
602                 from_hash = file_lookup_open(f, flags);
603         }
604
605         if (f->fd == -1) {
606                 char buf[FIO_VERROR_SIZE];
607                 int __e = errno;
608
609                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
610                         flags &= ~FIO_O_NOATIME;
611                         goto open_again;
612                 }
613                 if (__e == EMFILE && file_close_shadow_fds(td))
614                         goto open_again;
615
616                 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
617
618                 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
619                         log_err("fio: looks like your file system does not " \
620                                 "support direct=1/buffered=0\n");
621                 }
622
623                 td_verror(td, __e, buf);
624                 return 1;
625         }
626
627         if (!from_hash && f->fd != -1) {
628                 if (add_file_hash(f)) {
629                         int fio_unused ret;
630
631                         /*
632                          * Stash away descriptor for later close. This is to
633                          * work-around a "feature" on Linux, where a close of
634                          * an fd that has been opened for write will trigger
635                          * udev to call blkid to check partitions, fs id, etc.
636                          * That pollutes the device cache, which can slow down
637                          * unbuffered accesses.
638                          */
639                         if (f->shadow_fd == -1)
640                                 f->shadow_fd = f->fd;
641                         else {
642                                 /*
643                                  * OK to ignore, we haven't done anything
644                                  * with it
645                                  */
646                                 ret = generic_close_file(td, f);
647                         }
648                         goto open_again;
649                 }
650         }
651
652         return 0;
653 }
654
655 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
656 {
657         return get_file_size(td, f);
658 }
659
660 /*
661  * open/close all files, so that ->real_file_size gets set
662  */
663 static int get_file_sizes(struct thread_data *td)
664 {
665         struct fio_file *f;
666         unsigned int i;
667         int err = 0;
668
669         for_each_file(td, f, i) {
670                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
671                                                                 f->file_name);
672
673                 if (td_io_get_file_size(td, f)) {
674                         if (td->error != ENOENT) {
675                                 log_err("%s\n", td->verror);
676                                 err = 1;
677                                 break;
678                         }
679                         clear_error(td);
680                 }
681
682                 if (f->real_file_size == -1ULL && td->o.size)
683                         f->real_file_size = td->o.size / td->o.nr_files;
684         }
685
686         return err;
687 }
688
689 struct fio_mount {
690         struct flist_head list;
691         const char *base;
692         char __base[256];
693         unsigned int key;
694 };
695
696 /*
697  * Get free number of bytes for each file on each unique mount.
698  */
699 static unsigned long long get_fs_free_counts(struct thread_data *td)
700 {
701         struct flist_head *n, *tmp;
702         unsigned long long ret = 0;
703         struct fio_mount *fm;
704         FLIST_HEAD(list);
705         struct fio_file *f;
706         unsigned int i;
707
708         for_each_file(td, f, i) {
709                 struct stat sb;
710                 char buf[256];
711
712                 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
713                         if (f->real_file_size != -1ULL)
714                                 ret += f->real_file_size;
715                         continue;
716                 } else if (f->filetype != FIO_TYPE_FILE)
717                         continue;
718
719                 buf[255] = '\0';
720                 strncpy(buf, f->file_name, 255);
721
722                 if (stat(buf, &sb) < 0) {
723                         if (errno != ENOENT)
724                                 break;
725                         strcpy(buf, ".");
726                         if (stat(buf, &sb) < 0)
727                                 break;
728                 }
729
730                 fm = NULL;
731                 flist_for_each(n, &list) {
732                         fm = flist_entry(n, struct fio_mount, list);
733                         if (fm->key == sb.st_dev)
734                                 break;
735
736                         fm = NULL;
737                 }
738
739                 if (fm)
740                         continue;
741
742                 fm = calloc(1, sizeof(*fm));
743                 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
744                 fm->base = basename(fm->__base);
745                 fm->key = sb.st_dev;
746                 flist_add(&fm->list, &list);
747         }
748
749         flist_for_each_safe(n, tmp, &list) {
750                 unsigned long long sz;
751
752                 fm = flist_entry(n, struct fio_mount, list);
753                 flist_del(&fm->list);
754
755                 sz = get_fs_free_size(fm->base);
756                 if (sz && sz != -1ULL)
757                         ret += sz;
758
759                 free(fm);
760         }
761
762         return ret;
763 }
764
765 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
766 {
767         struct thread_options *o = &td->o;
768
769         if (o->file_append && f->filetype == FIO_TYPE_FILE)
770                 return f->real_file_size;
771
772         return td->o.start_offset +
773                 td->subjob_number * td->o.offset_increment;
774 }
775
776 /*
777  * Open the files and setup files sizes, creating files if necessary.
778  */
779 int setup_files(struct thread_data *td)
780 {
781         unsigned long long total_size, extend_size;
782         struct thread_options *o = &td->o;
783         struct fio_file *f;
784         unsigned int i, nr_fs_extra = 0;
785         int err = 0, need_extend;
786         int old_state;
787         const unsigned int bs = td_min_bs(td);
788         uint64_t fs = 0;
789
790         dprint(FD_FILE, "setup files\n");
791
792         old_state = td_bump_runstate(td, TD_SETTING_UP);
793
794         if (o->read_iolog_file)
795                 goto done;
796
797         /*
798          * if ioengine defines a setup() method, it's responsible for
799          * opening the files and setting f->real_file_size to indicate
800          * the valid range for that file.
801          */
802         if (td->io_ops->setup)
803                 err = td->io_ops->setup(td);
804         else
805                 err = get_file_sizes(td);
806
807         if (err)
808                 goto err_out;
809
810         /*
811          * check sizes. if the files/devices do not exist and the size
812          * isn't passed to fio, abort.
813          */
814         total_size = 0;
815         for_each_file(td, f, i) {
816                 f->fileno = i;
817                 if (f->real_file_size == -1ULL)
818                         total_size = -1ULL;
819                 else
820                         total_size += f->real_file_size;
821         }
822
823         if (o->fill_device)
824                 td->fill_device_size = get_fs_free_counts(td);
825
826         /*
827          * device/file sizes are zero and no size given, punt
828          */
829         if ((!total_size || total_size == -1ULL) && !o->size &&
830             !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
831             !(o->nr_files && (o->file_size_low || o->file_size_high))) {
832                 log_err("%s: you need to specify size=\n", o->name);
833                 td_verror(td, EINVAL, "total_file_size");
834                 goto err_out;
835         }
836
837         /*
838          * Calculate per-file size and potential extra size for the
839          * first files, if needed.
840          */
841         if (!o->file_size_low && o->nr_files) {
842                 uint64_t all_fs;
843
844                 fs = o->size / o->nr_files;
845                 all_fs = fs * o->nr_files;
846
847                 if (all_fs < o->size)
848                         nr_fs_extra = (o->size - all_fs) / bs;
849         }
850
851         /*
852          * now file sizes are known, so we can set ->io_size. if size= is
853          * not given, ->io_size is just equal to ->real_file_size. if size
854          * is given, ->io_size is size / nr_files.
855          */
856         extend_size = total_size = 0;
857         need_extend = 0;
858         for_each_file(td, f, i) {
859                 f->file_offset = get_start_offset(td, f);
860
861                 if (!o->file_size_low) {
862                         /*
863                          * no file size range given, file size is equal to
864                          * total size divided by number of files. If that is
865                          * zero, set it to the real file size. If the size
866                          * doesn't divide nicely with the min blocksize,
867                          * make the first files bigger.
868                          */
869                         f->io_size = fs;
870                         if (nr_fs_extra) {
871                                 nr_fs_extra--;
872                                 f->io_size += bs;
873                         }
874
875                         if (!f->io_size)
876                                 f->io_size = f->real_file_size - f->file_offset;
877                 } else if (f->real_file_size < o->file_size_low ||
878                            f->real_file_size > o->file_size_high) {
879                         if (f->file_offset > o->file_size_low)
880                                 goto err_offset;
881                         /*
882                          * file size given. if it's fixed, use that. if it's a
883                          * range, generate a random size in-between.
884                          */
885                         if (o->file_size_low == o->file_size_high)
886                                 f->io_size = o->file_size_low - f->file_offset;
887                         else {
888                                 f->io_size = get_rand_file_size(td)
889                                                 - f->file_offset;
890                         }
891                 } else
892                         f->io_size = f->real_file_size - f->file_offset;
893
894                 if (f->io_size == -1ULL)
895                         total_size = -1ULL;
896                 else {
897                         if (o->size_percent) {
898                                 f->io_size = (f->io_size * o->size_percent) / 100;
899                                 f->io_size -= (f->io_size % td_min_bs(td));
900                         }
901                         total_size += f->io_size;
902                 }
903
904                 if (f->filetype == FIO_TYPE_FILE &&
905                     (f->io_size + f->file_offset) > f->real_file_size &&
906                     !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
907                         if (!o->create_on_open) {
908                                 need_extend++;
909                                 extend_size += (f->io_size + f->file_offset);
910                         } else
911                                 f->real_file_size = f->io_size + f->file_offset;
912                         fio_file_set_extend(f);
913                 }
914         }
915
916         if (td->o.block_error_hist) {
917                 int len;
918
919                 assert(td->o.nr_files == 1);    /* checked in fixup_options */
920                 f = td->files[0];
921                 len = f->io_size / td->o.bs[DDIR_TRIM];
922                 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
923                         log_err("fio: cannot calculate block histogram with "
924                                 "%d trim blocks, maximum %d\n",
925                                 len, MAX_NR_BLOCK_INFOS);
926                         td_verror(td, EINVAL, "block_error_hist");
927                         goto err_out;
928                 }
929
930                 td->ts.nr_block_infos = len;
931                 for (i = 0; i < len; i++)
932                         td->ts.block_infos[i] =
933                                 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
934         } else
935                 td->ts.nr_block_infos = 0;
936
937         if (!o->size || (total_size && o->size > total_size))
938                 o->size = total_size;
939
940         if (o->size < td_min_bs(td)) {
941                 log_err("fio: blocksize too large for data set\n");
942                 goto err_out;
943         }
944
945         /*
946          * See if we need to extend some files
947          */
948         if (need_extend) {
949                 temp_stall_ts = 1;
950                 if (output_format & FIO_OUTPUT_NORMAL)
951                         log_info("%s: Laying out IO file(s) (%u file(s) /"
952                                  " %lluMB)\n", o->name, need_extend,
953                                         extend_size >> 20);
954
955                 for_each_file(td, f, i) {
956                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
957
958                         if (!fio_file_extend(f))
959                                 continue;
960
961                         assert(f->filetype == FIO_TYPE_FILE);
962                         fio_file_clear_extend(f);
963                         if (!o->fill_device) {
964                                 old_len = f->real_file_size;
965                                 extend_len = f->io_size + f->file_offset -
966                                                 old_len;
967                         }
968                         f->real_file_size = (f->io_size + f->file_offset);
969                         err = extend_file(td, f);
970                         if (err)
971                                 break;
972
973                         err = __file_invalidate_cache(td, f, old_len,
974                                                                 extend_len);
975
976                         /*
977                          * Shut up static checker
978                          */
979                         if (f->fd != -1)
980                                 close(f->fd);
981
982                         f->fd = -1;
983                         if (err)
984                                 break;
985                 }
986                 temp_stall_ts = 0;
987         }
988
989         if (err)
990                 goto err_out;
991
992         if (!o->zone_size)
993                 o->zone_size = o->size;
994
995         /*
996          * iolog already set the total io size, if we read back
997          * stored entries.
998          */
999         if (!o->read_iolog_file) {
1000                 if (o->io_limit)
1001                         td->total_io_size = o->io_limit * o->loops;
1002                 else
1003                         td->total_io_size = o->size * o->loops;
1004         }
1005
1006 done:
1007         if (o->create_only)
1008                 td->done = 1;
1009
1010         td_restore_runstate(td, old_state);
1011         return 0;
1012 err_offset:
1013         log_err("%s: you need to specify valid offset=\n", o->name);
1014 err_out:
1015         td_restore_runstate(td, old_state);
1016         return 1;
1017 }
1018
1019 int pre_read_files(struct thread_data *td)
1020 {
1021         struct fio_file *f;
1022         unsigned int i;
1023
1024         dprint(FD_FILE, "pre_read files\n");
1025
1026         for_each_file(td, f, i) {
1027                 pre_read_file(td, f);
1028         }
1029
1030         return 1;
1031 }
1032
1033 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1034 {
1035         unsigned int range_size, seed;
1036         unsigned long nranges;
1037         uint64_t fsize;
1038
1039         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1040         fsize = min(f->real_file_size, f->io_size);
1041
1042         nranges = (fsize + range_size - 1) / range_size;
1043
1044         seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1045         if (!td->o.rand_repeatable)
1046                 seed = td->rand_seeds[4];
1047
1048         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1049                 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1050         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1051                 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1052         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1053                 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1054
1055         return 1;
1056 }
1057
1058 static int init_rand_distribution(struct thread_data *td)
1059 {
1060         struct fio_file *f;
1061         unsigned int i;
1062         int state;
1063
1064         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1065                 return 0;
1066
1067         state = td_bump_runstate(td, TD_SETTING_UP);
1068
1069         for_each_file(td, f, i)
1070                 __init_rand_distribution(td, f);
1071
1072         td_restore_runstate(td, state);
1073
1074         return 1;
1075 }
1076
1077 /*
1078  * Check if the number of blocks exceeds the randomness capability of
1079  * the selected generator. Tausworthe is 32-bit, the others are fullly
1080  * 64-bit capable.
1081  */
1082 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1083                                  uint64_t blocks)
1084 {
1085         if (blocks <= FRAND32_MAX)
1086                 return 0;
1087         if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1088                 return 0;
1089
1090         /*
1091          * If the user hasn't specified a random generator, switch
1092          * to tausworthe64 with informational warning. If the user did
1093          * specify one, just warn.
1094          */
1095         log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1096                         f->file_name);
1097
1098         if (!fio_option_is_set(&td->o, random_generator)) {
1099                 log_info("fio: Switching to tausworthe64. Use the "
1100                          "random_generator= option to get rid of this "
1101                          "warning.\n");
1102                 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1103                 return 0;
1104         }
1105
1106         /*
1107          * Just make this information to avoid breaking scripts.
1108          */
1109         log_info("fio: Use the random_generator= option to switch to lfsr or "
1110                          "tausworthe64.\n");
1111         return 0;
1112 }
1113
1114 int init_random_map(struct thread_data *td)
1115 {
1116         unsigned long long blocks;
1117         struct fio_file *f;
1118         unsigned int i;
1119
1120         if (init_rand_distribution(td))
1121                 return 0;
1122         if (!td_random(td))
1123                 return 0;
1124
1125         for_each_file(td, f, i) {
1126                 uint64_t fsize = min(f->real_file_size, f->io_size);
1127
1128                 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1129
1130                 if (check_rand_gen_limits(td, f, blocks))
1131                         return 1;
1132
1133                 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1134                         unsigned long seed;
1135
1136                         seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1137
1138                         if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1139                                 fio_file_set_lfsr(f);
1140                                 continue;
1141                         }
1142                 } else if (!td->o.norandommap) {
1143                         f->io_axmap = axmap_new(blocks);
1144                         if (f->io_axmap) {
1145                                 fio_file_set_axmap(f);
1146                                 continue;
1147                         }
1148                 } else if (td->o.norandommap)
1149                         continue;
1150
1151                 if (!td->o.softrandommap) {
1152                         log_err("fio: failed allocating random map. If running"
1153                                 " a large number of jobs, try the 'norandommap'"
1154                                 " option or set 'softrandommap'. Or give"
1155                                 " a larger --alloc-size to fio.\n");
1156                         return 1;
1157                 }
1158
1159                 log_info("fio: file %s failed allocating random map. Running "
1160                          "job without.\n", f->file_name);
1161         }
1162
1163         return 0;
1164 }
1165
1166 void close_files(struct thread_data *td)
1167 {
1168         struct fio_file *f;
1169         unsigned int i;
1170
1171         for_each_file(td, f, i) {
1172                 if (fio_file_open(f))
1173                         td_io_close_file(td, f);
1174         }
1175 }
1176
1177 void close_and_free_files(struct thread_data *td)
1178 {
1179         struct fio_file *f;
1180         unsigned int i;
1181
1182         dprint(FD_FILE, "close files\n");
1183
1184         for_each_file(td, f, i) {
1185                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1186                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1187                         td_io_unlink_file(td, f);
1188                 }
1189
1190                 if (fio_file_open(f))
1191                         td_io_close_file(td, f);
1192
1193                 remove_file_hash(f);
1194
1195                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1196                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1197                         td_io_unlink_file(td, f);
1198                 }
1199
1200                 sfree(f->file_name);
1201                 f->file_name = NULL;
1202                 if (fio_file_axmap(f)) {
1203                         axmap_free(f->io_axmap);
1204                         f->io_axmap = NULL;
1205                 }
1206                 sfree(f);
1207         }
1208
1209         td->o.filename = NULL;
1210         free(td->files);
1211         free(td->file_locks);
1212         td->files_index = 0;
1213         td->files = NULL;
1214         td->file_locks = NULL;
1215         td->o.file_lock_mode = FILE_LOCK_NONE;
1216         td->o.nr_files = 0;
1217 }
1218
1219 static void get_file_type(struct fio_file *f)
1220 {
1221         struct stat sb;
1222
1223         if (!strcmp(f->file_name, "-"))
1224                 f->filetype = FIO_TYPE_PIPE;
1225         else
1226                 f->filetype = FIO_TYPE_FILE;
1227
1228 #ifdef WIN32
1229         /* \\.\ is the device namespace in Windows, where every file is
1230          * a block device */
1231         if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1232                 f->filetype = FIO_TYPE_BD;
1233 #endif
1234
1235         if (!stat(f->file_name, &sb)) {
1236                 if (S_ISBLK(sb.st_mode))
1237                         f->filetype = FIO_TYPE_BD;
1238                 else if (S_ISCHR(sb.st_mode))
1239                         f->filetype = FIO_TYPE_CHAR;
1240                 else if (S_ISFIFO(sb.st_mode))
1241                         f->filetype = FIO_TYPE_PIPE;
1242         }
1243 }
1244
1245 static bool __is_already_allocated(const char *fname, bool set)
1246 {
1247         struct flist_head *entry;
1248         bool ret;
1249
1250         ret = file_bloom_exists(fname, set);
1251         if (!ret)
1252                 return ret;
1253
1254         flist_for_each(entry, &filename_list) {
1255                 struct file_name *fn;
1256
1257                 fn = flist_entry(entry, struct file_name, list);
1258
1259                 if (!strcmp(fn->filename, fname))
1260                         return true;
1261         }
1262
1263         return false;
1264 }
1265
1266 static bool is_already_allocated(const char *fname)
1267 {
1268         bool ret;
1269
1270         fio_file_hash_lock();
1271         ret = __is_already_allocated(fname, false);
1272         fio_file_hash_unlock();
1273
1274         return ret;
1275 }
1276
1277 static void set_already_allocated(const char *fname)
1278 {
1279         struct file_name *fn;
1280
1281         fn = malloc(sizeof(struct file_name));
1282         fn->filename = strdup(fname);
1283
1284         fio_file_hash_lock();
1285         if (!__is_already_allocated(fname, true)) {
1286                 flist_add_tail(&fn->list, &filename_list);
1287                 fn = NULL;
1288         }
1289         fio_file_hash_unlock();
1290
1291         if (fn) {
1292                 free(fn->filename);
1293                 free(fn);
1294         }
1295 }
1296
1297 static void free_already_allocated(void)
1298 {
1299         struct flist_head *entry, *tmp;
1300         struct file_name *fn;
1301
1302         if (flist_empty(&filename_list))
1303                 return;
1304
1305         fio_file_hash_lock();
1306         flist_for_each_safe(entry, tmp, &filename_list) {
1307                 fn = flist_entry(entry, struct file_name, list);
1308                 free(fn->filename);
1309                 flist_del(&fn->list);
1310                 free(fn);
1311         }
1312
1313         fio_file_hash_unlock();
1314 }
1315
1316 static struct fio_file *alloc_new_file(struct thread_data *td)
1317 {
1318         struct fio_file *f;
1319
1320         f = smalloc(sizeof(*f));
1321         if (!f) {
1322                 assert(0);
1323                 return NULL;
1324         }
1325
1326         f->fd = -1;
1327         f->shadow_fd = -1;
1328         fio_file_reset(td, f);
1329         return f;
1330 }
1331
1332 bool exists_and_not_regfile(const char *filename)
1333 {
1334         struct stat sb;
1335
1336         if (lstat(filename, &sb) == -1)
1337                 return false;
1338
1339 #ifndef WIN32 /* NOT Windows */
1340         if (S_ISREG(sb.st_mode))
1341                 return false;
1342 #else
1343         /* \\.\ is the device namespace in Windows, where every file
1344          * is a device node */
1345         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1346                 return false;
1347 #endif
1348
1349         return true;
1350 }
1351
1352 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1353 {
1354         int cur_files = td->files_index;
1355         char file_name[PATH_MAX];
1356         struct fio_file *f;
1357         int len = 0;
1358
1359         dprint(FD_FILE, "add file %s\n", fname);
1360
1361         if (td->o.directory)
1362                 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1363                                         td->o.unique_filename);
1364
1365         sprintf(file_name + len, "%s", fname);
1366
1367         /* clean cloned siblings using existing files */
1368         if (numjob && is_already_allocated(file_name) &&
1369             !exists_and_not_regfile(fname))
1370                 return 0;
1371
1372         f = alloc_new_file(td);
1373
1374         if (td->files_size <= td->files_index) {
1375                 unsigned int new_size = td->o.nr_files + 1;
1376
1377                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1378
1379                 td->files = realloc(td->files, new_size * sizeof(f));
1380                 if (td->files == NULL) {
1381                         log_err("fio: realloc OOM\n");
1382                         assert(0);
1383                 }
1384                 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1385                         td->file_locks = realloc(td->file_locks, new_size);
1386                         if (!td->file_locks) {
1387                                 log_err("fio: realloc OOM\n");
1388                                 assert(0);
1389                         }
1390                         td->file_locks[cur_files] = FILE_LOCK_NONE;
1391                 }
1392                 td->files_size = new_size;
1393         }
1394         td->files[cur_files] = f;
1395         f->fileno = cur_files;
1396
1397         /*
1398          * init function, io engine may not be loaded yet
1399          */
1400         if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1401                 f->real_file_size = -1ULL;
1402
1403         f->file_name = smalloc_strdup(file_name);
1404         if (!f->file_name)
1405                 assert(0);
1406
1407         get_file_type(f);
1408
1409         switch (td->o.file_lock_mode) {
1410         case FILE_LOCK_NONE:
1411                 break;
1412         case FILE_LOCK_READWRITE:
1413                 f->rwlock = fio_rwlock_init();
1414                 break;
1415         case FILE_LOCK_EXCLUSIVE:
1416                 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1417                 break;
1418         default:
1419                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1420                 assert(0);
1421         }
1422
1423         td->files_index++;
1424         if (f->filetype == FIO_TYPE_FILE)
1425                 td->nr_normal_files++;
1426
1427         set_already_allocated(file_name);
1428
1429         if (inc)
1430                 td->o.nr_files++;
1431
1432         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1433                                                         cur_files);
1434
1435         return cur_files;
1436 }
1437
1438 int add_file_exclusive(struct thread_data *td, const char *fname)
1439 {
1440         struct fio_file *f;
1441         unsigned int i;
1442
1443         for_each_file(td, f, i) {
1444                 if (!strcmp(f->file_name, fname))
1445                         return i;
1446         }
1447
1448         return add_file(td, fname, 0, 1);
1449 }
1450
1451 void get_file(struct fio_file *f)
1452 {
1453         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1454         assert(fio_file_open(f));
1455         f->references++;
1456 }
1457
1458 int put_file(struct thread_data *td, struct fio_file *f)
1459 {
1460         int f_ret = 0, ret = 0;
1461
1462         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1463
1464         if (!fio_file_open(f)) {
1465                 assert(f->fd == -1);
1466                 return 0;
1467         }
1468
1469         assert(f->references);
1470         if (--f->references)
1471                 return 0;
1472
1473         if (should_fsync(td) && td->o.fsync_on_close) {
1474                 f_ret = fsync(f->fd);
1475                 if (f_ret < 0)
1476                         f_ret = errno;
1477         }
1478
1479         if (td->io_ops->close_file)
1480                 ret = td->io_ops->close_file(td, f);
1481
1482         if (!ret)
1483                 ret = f_ret;
1484
1485         td->nr_open_files--;
1486         fio_file_clear_open(f);
1487         assert(f->fd == -1);
1488         return ret;
1489 }
1490
1491 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1492 {
1493         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1494                 return;
1495
1496         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1497                 if (ddir == DDIR_READ)
1498                         fio_rwlock_read(f->rwlock);
1499                 else
1500                         fio_rwlock_write(f->rwlock);
1501         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1502                 fio_mutex_down(f->lock);
1503
1504         td->file_locks[f->fileno] = td->o.file_lock_mode;
1505 }
1506
1507 void unlock_file(struct thread_data *td, struct fio_file *f)
1508 {
1509         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1510                 return;
1511
1512         if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1513                 fio_rwlock_unlock(f->rwlock);
1514         else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1515                 fio_mutex_up(f->lock);
1516
1517         td->file_locks[f->fileno] = FILE_LOCK_NONE;
1518 }
1519
1520 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1521 {
1522         if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1523                 return;
1524         if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1525                 unlock_file(td, f);
1526 }
1527
1528 static int recurse_dir(struct thread_data *td, const char *dirname)
1529 {
1530         struct dirent *dir;
1531         int ret = 0;
1532         DIR *D;
1533
1534         D = opendir(dirname);
1535         if (!D) {
1536                 char buf[FIO_VERROR_SIZE];
1537
1538                 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1539                 td_verror(td, errno, buf);
1540                 return 1;
1541         }
1542
1543         while ((dir = readdir(D)) != NULL) {
1544                 char full_path[PATH_MAX];
1545                 struct stat sb;
1546
1547                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1548                         continue;
1549
1550                 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1551
1552                 if (lstat(full_path, &sb) == -1) {
1553                         if (errno != ENOENT) {
1554                                 td_verror(td, errno, "stat");
1555                                 ret = 1;
1556                                 break;
1557                         }
1558                 }
1559
1560                 if (S_ISREG(sb.st_mode)) {
1561                         add_file(td, full_path, 0, 1);
1562                         continue;
1563                 }
1564                 if (!S_ISDIR(sb.st_mode))
1565                         continue;
1566
1567                 ret = recurse_dir(td, full_path);
1568                 if (ret)
1569                         break;
1570         }
1571
1572         closedir(D);
1573         return ret;
1574 }
1575
1576 int add_dir_files(struct thread_data *td, const char *path)
1577 {
1578         int ret = recurse_dir(td, path);
1579
1580         if (!ret)
1581                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1582
1583         return ret;
1584 }
1585
1586 void dup_files(struct thread_data *td, struct thread_data *org)
1587 {
1588         struct fio_file *f;
1589         unsigned int i;
1590
1591         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1592
1593         if (!org->files)
1594                 return;
1595
1596         td->files = malloc(org->files_index * sizeof(f));
1597
1598         if (td->o.file_lock_mode != FILE_LOCK_NONE)
1599                 td->file_locks = malloc(org->files_index);
1600
1601         for_each_file(org, f, i) {
1602                 struct fio_file *__f;
1603
1604                 __f = alloc_new_file(td);
1605
1606                 if (f->file_name) {
1607                         __f->file_name = smalloc_strdup(f->file_name);
1608                         if (!__f->file_name)
1609                                 assert(0);
1610
1611                         __f->filetype = f->filetype;
1612                 }
1613
1614                 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1615                         __f->lock = f->lock;
1616                 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1617                         __f->rwlock = f->rwlock;
1618
1619                 td->files[i] = __f;
1620         }
1621 }
1622
1623 /*
1624  * Returns the index that matches the filename, or -1 if not there
1625  */
1626 int get_fileno(struct thread_data *td, const char *fname)
1627 {
1628         struct fio_file *f;
1629         unsigned int i;
1630
1631         for_each_file(td, f, i)
1632                 if (!strcmp(f->file_name, fname))
1633                         return i;
1634
1635         return -1;
1636 }
1637
1638 /*
1639  * For log usage, where we add/open/close files automatically
1640  */
1641 void free_release_files(struct thread_data *td)
1642 {
1643         close_files(td);
1644         td->o.nr_files = 0;
1645         td->o.open_files = 0;
1646         td->files_index = 0;
1647         td->nr_normal_files = 0;
1648 }
1649
1650 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1651 {
1652         int i;
1653
1654         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1655                 f->last_pos[i] = f->file_offset;
1656                 f->last_start[i] = -1ULL;
1657         }
1658
1659         if (fio_file_axmap(f))
1660                 axmap_reset(f->io_axmap);
1661         else if (fio_file_lfsr(f))
1662                 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1663 }
1664
1665 bool fio_files_done(struct thread_data *td)
1666 {
1667         struct fio_file *f;
1668         unsigned int i;
1669
1670         for_each_file(td, f, i)
1671                 if (!fio_file_done(f))
1672                         return false;
1673
1674         return true;
1675 }
1676
1677 /* free memory used in initialization phase only */
1678 void filesetup_mem_free(void)
1679 {
1680         free_already_allocated();
1681 }