Use 0 instead of DDIR_READ to iterate from 0 to DDIR_RWDIR_CNT
[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_BLOCK)
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 = -1ULL;
379
380         if (ret) {
381                 f->real_file_size = -1ULL;
382                 return ret;
383         }
384
385         if (f->file_offset > f->real_file_size) {
386                 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
387                                         (unsigned long long) f->file_offset,
388                                         (unsigned long long) f->real_file_size);
389                 return 1;
390         }
391
392         fio_file_set_size_known(f);
393         return 0;
394 }
395
396 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
397                                    unsigned long long off,
398                                    unsigned long long len)
399 {
400         int errval = 0, ret = 0;
401
402 #ifdef CONFIG_ESX
403         return 0;
404 #endif
405
406         if (len == -1ULL)
407                 len = f->io_size;
408         if (off == -1ULL)
409                 off = f->file_offset;
410
411         if (len == -1ULL || off == -1ULL)
412                 return 0;
413
414         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
415                                                                 len);
416
417         if (td->io_ops->invalidate) {
418                 ret = td->io_ops->invalidate(td, f);
419                 if (ret < 0)
420                         errval = ret;
421         } else if (f->filetype == FIO_TYPE_FILE) {
422                 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
423                 if (ret)
424                         errval = ret;
425         } else if (f->filetype == FIO_TYPE_BLOCK) {
426                 int retry_count = 0;
427
428                 ret = blockdev_invalidate_cache(f);
429                 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
430                         /*
431                          * Linux multipath devices reject ioctl while
432                          * the maps are being updated. That window can
433                          * last tens of milliseconds; we'll try up to
434                          * a quarter of a second.
435                          */
436                         usleep(10000);
437                         ret = blockdev_invalidate_cache(f);
438                 }
439                 if (ret < 0 && errno == EACCES && geteuid()) {
440                         if (!root_warn) {
441                                 log_err("fio: only root may flush block "
442                                         "devices. Cache flush bypassed!\n");
443                                 root_warn = 1;
444                         }
445                         ret = 0;
446                 }
447                 if (ret < 0)
448                         errval = errno;
449         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
450                 ret = 0;
451
452         /*
453          * Cache flushing isn't a fatal condition, and we know it will
454          * happen on some platforms where we don't have the proper
455          * function to flush eg block device caches. So just warn and
456          * continue on our way.
457          */
458         if (errval)
459                 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
460
461         return 0;
462
463 }
464
465 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
466 {
467         if (!fio_file_open(f))
468                 return 0;
469
470         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
471 }
472
473 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
474 {
475         int ret = 0;
476
477         dprint(FD_FILE, "fd close %s\n", f->file_name);
478
479         remove_file_hash(f);
480
481         if (close(f->fd) < 0)
482                 ret = errno;
483
484         f->fd = -1;
485
486         if (f->shadow_fd != -1) {
487                 close(f->shadow_fd);
488                 f->shadow_fd = -1;
489         }
490
491         f->engine_data = 0;
492         return ret;
493 }
494
495 int file_lookup_open(struct fio_file *f, int flags)
496 {
497         struct fio_file *__f;
498         int from_hash;
499
500         __f = lookup_file_hash(f->file_name);
501         if (__f) {
502                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
503                 /*
504                  * racy, need the __f->lock locked
505                  */
506                 f->lock = __f->lock;
507                 from_hash = 1;
508         } else {
509                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
510                 from_hash = 0;
511         }
512
513 #ifdef WIN32
514         flags |= _O_BINARY;
515 #endif
516
517         f->fd = open(f->file_name, flags, 0600);
518         return from_hash;
519 }
520
521 static int file_close_shadow_fds(struct thread_data *td)
522 {
523         struct fio_file *f;
524         int num_closed = 0;
525         unsigned int i;
526
527         for_each_file(td, f, i) {
528                 if (f->shadow_fd == -1)
529                         continue;
530
531                 close(f->shadow_fd);
532                 f->shadow_fd = -1;
533                 num_closed++;
534         }
535
536         return num_closed;
537 }
538
539 int generic_open_file(struct thread_data *td, struct fio_file *f)
540 {
541         int is_std = 0;
542         int flags = 0;
543         int from_hash = 0;
544
545         dprint(FD_FILE, "fd open %s\n", f->file_name);
546
547         if (!strcmp(f->file_name, "-")) {
548                 if (td_rw(td)) {
549                         log_err("fio: can't read/write to stdin/out\n");
550                         return 1;
551                 }
552                 is_std = 1;
553
554                 /*
555                  * move output logging to stderr, if we are writing to stdout
556                  */
557                 if (td_write(td))
558                         f_out = stderr;
559         }
560
561         if (td_trim(td))
562                 goto skip_flags;
563         if (td->o.odirect)
564                 flags |= OS_O_DIRECT;
565         if (td->o.oatomic) {
566                 if (!FIO_O_ATOMIC) {
567                         td_verror(td, EINVAL, "OS does not support atomic IO");
568                         return 1;
569                 }
570                 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
571         }
572         if (td->o.sync_io)
573                 flags |= O_SYNC;
574         if (td->o.create_on_open && td->o.allow_create)
575                 flags |= O_CREAT;
576 skip_flags:
577         if (f->filetype != FIO_TYPE_FILE)
578                 flags |= FIO_O_NOATIME;
579
580 open_again:
581         if (td_write(td)) {
582                 if (!read_only)
583                         flags |= O_RDWR;
584
585                 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
586                         flags |= O_CREAT;
587
588                 if (is_std)
589                         f->fd = dup(STDOUT_FILENO);
590                 else
591                         from_hash = file_lookup_open(f, flags);
592         } else if (td_read(td)) {
593                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
594                         flags |= O_RDWR;
595                 else
596                         flags |= O_RDONLY;
597
598                 if (is_std)
599                         f->fd = dup(STDIN_FILENO);
600                 else
601                         from_hash = file_lookup_open(f, flags);
602         } else { //td trim
603                 flags |= O_RDWR;
604                 from_hash = file_lookup_open(f, flags);
605         }
606
607         if (f->fd == -1) {
608                 char buf[FIO_VERROR_SIZE];
609                 int __e = errno;
610
611                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
612                         flags &= ~FIO_O_NOATIME;
613                         goto open_again;
614                 }
615                 if (__e == EMFILE && file_close_shadow_fds(td))
616                         goto open_again;
617
618                 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
619
620                 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
621                         log_err("fio: looks like your file system does not " \
622                                 "support direct=1/buffered=0\n");
623                 }
624
625                 td_verror(td, __e, buf);
626                 return 1;
627         }
628
629         if (!from_hash && f->fd != -1) {
630                 if (add_file_hash(f)) {
631                         int fio_unused ret;
632
633                         /*
634                          * Stash away descriptor for later close. This is to
635                          * work-around a "feature" on Linux, where a close of
636                          * an fd that has been opened for write will trigger
637                          * udev to call blkid to check partitions, fs id, etc.
638                          * That pollutes the device cache, which can slow down
639                          * unbuffered accesses.
640                          */
641                         if (f->shadow_fd == -1)
642                                 f->shadow_fd = f->fd;
643                         else {
644                                 /*
645                                  * OK to ignore, we haven't done anything
646                                  * with it
647                                  */
648                                 ret = generic_close_file(td, f);
649                         }
650                         goto open_again;
651                 }
652         }
653
654         return 0;
655 }
656
657 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
658 {
659         return get_file_size(td, f);
660 }
661
662 /*
663  * open/close all files, so that ->real_file_size gets set
664  */
665 static int get_file_sizes(struct thread_data *td)
666 {
667         struct fio_file *f;
668         unsigned int i;
669         int err = 0;
670
671         for_each_file(td, f, i) {
672                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
673                                                                 f->file_name);
674
675                 if (td_io_get_file_size(td, f)) {
676                         if (td->error != ENOENT) {
677                                 log_err("%s\n", td->verror);
678                                 err = 1;
679                                 break;
680                         }
681                         clear_error(td);
682                 }
683
684                 if (f->real_file_size == -1ULL && td->o.size)
685                         f->real_file_size = td->o.size / td->o.nr_files;
686         }
687
688         return err;
689 }
690
691 struct fio_mount {
692         struct flist_head list;
693         const char *base;
694         char __base[256];
695         unsigned int key;
696 };
697
698 /*
699  * Get free number of bytes for each file on each unique mount.
700  */
701 static unsigned long long get_fs_free_counts(struct thread_data *td)
702 {
703         struct flist_head *n, *tmp;
704         unsigned long long ret = 0;
705         struct fio_mount *fm;
706         FLIST_HEAD(list);
707         struct fio_file *f;
708         unsigned int i;
709
710         for_each_file(td, f, i) {
711                 struct stat sb;
712                 char buf[256];
713
714                 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
715                         if (f->real_file_size != -1ULL)
716                                 ret += f->real_file_size;
717                         continue;
718                 } else if (f->filetype != FIO_TYPE_FILE)
719                         continue;
720
721                 buf[255] = '\0';
722                 strncpy(buf, f->file_name, 255);
723
724                 if (stat(buf, &sb) < 0) {
725                         if (errno != ENOENT)
726                                 break;
727                         strcpy(buf, ".");
728                         if (stat(buf, &sb) < 0)
729                                 break;
730                 }
731
732                 fm = NULL;
733                 flist_for_each(n, &list) {
734                         fm = flist_entry(n, struct fio_mount, list);
735                         if (fm->key == sb.st_dev)
736                                 break;
737
738                         fm = NULL;
739                 }
740
741                 if (fm)
742                         continue;
743
744                 fm = calloc(1, sizeof(*fm));
745                 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
746                 fm->base = basename(fm->__base);
747                 fm->key = sb.st_dev;
748                 flist_add(&fm->list, &list);
749         }
750
751         flist_for_each_safe(n, tmp, &list) {
752                 unsigned long long sz;
753
754                 fm = flist_entry(n, struct fio_mount, list);
755                 flist_del(&fm->list);
756
757                 sz = get_fs_free_size(fm->base);
758                 if (sz && sz != -1ULL)
759                         ret += sz;
760
761                 free(fm);
762         }
763
764         return ret;
765 }
766
767 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
768 {
769         struct thread_options *o = &td->o;
770
771         if (o->file_append && f->filetype == FIO_TYPE_FILE)
772                 return f->real_file_size;
773
774         return td->o.start_offset +
775                 td->subjob_number * td->o.offset_increment;
776 }
777
778 /*
779  * Open the files and setup files sizes, creating files if necessary.
780  */
781 int setup_files(struct thread_data *td)
782 {
783         unsigned long long total_size, extend_size;
784         struct thread_options *o = &td->o;
785         struct fio_file *f;
786         unsigned int i, nr_fs_extra = 0;
787         int err = 0, need_extend;
788         int old_state;
789         const unsigned int bs = td_min_bs(td);
790         uint64_t fs = 0;
791
792         dprint(FD_FILE, "setup files\n");
793
794         old_state = td_bump_runstate(td, TD_SETTING_UP);
795
796         if (o->read_iolog_file)
797                 goto done;
798
799         /*
800          * if ioengine defines a setup() method, it's responsible for
801          * opening the files and setting f->real_file_size to indicate
802          * the valid range for that file.
803          */
804         if (td->io_ops->setup)
805                 err = td->io_ops->setup(td);
806         else
807                 err = get_file_sizes(td);
808
809         if (err)
810                 goto err_out;
811
812         /*
813          * check sizes. if the files/devices do not exist and the size
814          * isn't passed to fio, abort.
815          */
816         total_size = 0;
817         for_each_file(td, f, i) {
818                 f->fileno = i;
819                 if (f->real_file_size == -1ULL)
820                         total_size = -1ULL;
821                 else
822                         total_size += f->real_file_size;
823         }
824
825         if (o->fill_device)
826                 td->fill_device_size = get_fs_free_counts(td);
827
828         /*
829          * device/file sizes are zero and no size given, punt
830          */
831         if ((!total_size || total_size == -1ULL) && !o->size &&
832             !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
833             !(o->nr_files && (o->file_size_low || o->file_size_high))) {
834                 log_err("%s: you need to specify size=\n", o->name);
835                 td_verror(td, EINVAL, "total_file_size");
836                 goto err_out;
837         }
838
839         /*
840          * Calculate per-file size and potential extra size for the
841          * first files, if needed.
842          */
843         if (!o->file_size_low && o->nr_files) {
844                 uint64_t all_fs;
845
846                 fs = o->size / o->nr_files;
847                 all_fs = fs * o->nr_files;
848
849                 if (all_fs < o->size)
850                         nr_fs_extra = (o->size - all_fs) / bs;
851         }
852
853         /*
854          * now file sizes are known, so we can set ->io_size. if size= is
855          * not given, ->io_size is just equal to ->real_file_size. if size
856          * is given, ->io_size is size / nr_files.
857          */
858         extend_size = total_size = 0;
859         need_extend = 0;
860         for_each_file(td, f, i) {
861                 f->file_offset = get_start_offset(td, f);
862
863                 if (!o->file_size_low) {
864                         /*
865                          * no file size range given, file size is equal to
866                          * total size divided by number of files. If that is
867                          * zero, set it to the real file size. If the size
868                          * doesn't divide nicely with the min blocksize,
869                          * make the first files bigger.
870                          */
871                         f->io_size = fs;
872                         if (nr_fs_extra) {
873                                 nr_fs_extra--;
874                                 f->io_size += bs;
875                         }
876
877                         if (!f->io_size)
878                                 f->io_size = f->real_file_size - f->file_offset;
879                 } else if (f->real_file_size < o->file_size_low ||
880                            f->real_file_size > o->file_size_high) {
881                         if (f->file_offset > o->file_size_low)
882                                 goto err_offset;
883                         /*
884                          * file size given. if it's fixed, use that. if it's a
885                          * range, generate a random size in-between.
886                          */
887                         if (o->file_size_low == o->file_size_high)
888                                 f->io_size = o->file_size_low - f->file_offset;
889                         else {
890                                 f->io_size = get_rand_file_size(td)
891                                                 - f->file_offset;
892                         }
893                 } else
894                         f->io_size = f->real_file_size - f->file_offset;
895
896                 if (f->io_size == -1ULL)
897                         total_size = -1ULL;
898                 else {
899                         if (o->size_percent) {
900                                 f->io_size = (f->io_size * o->size_percent) / 100;
901                                 f->io_size -= (f->io_size % td_min_bs(td));
902                         }
903                         total_size += f->io_size;
904                 }
905
906                 if (f->filetype == FIO_TYPE_FILE &&
907                     (f->io_size + f->file_offset) > f->real_file_size &&
908                     !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
909                         if (!o->create_on_open) {
910                                 need_extend++;
911                                 extend_size += (f->io_size + f->file_offset);
912                         } else
913                                 f->real_file_size = f->io_size + f->file_offset;
914                         fio_file_set_extend(f);
915                 }
916         }
917
918         if (td->o.block_error_hist) {
919                 int len;
920
921                 assert(td->o.nr_files == 1);    /* checked in fixup_options */
922                 f = td->files[0];
923                 len = f->io_size / td->o.bs[DDIR_TRIM];
924                 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
925                         log_err("fio: cannot calculate block histogram with "
926                                 "%d trim blocks, maximum %d\n",
927                                 len, MAX_NR_BLOCK_INFOS);
928                         td_verror(td, EINVAL, "block_error_hist");
929                         goto err_out;
930                 }
931
932                 td->ts.nr_block_infos = len;
933                 for (i = 0; i < len; i++)
934                         td->ts.block_infos[i] =
935                                 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
936         } else
937                 td->ts.nr_block_infos = 0;
938
939         if (!o->size || (total_size && o->size > total_size))
940                 o->size = total_size;
941
942         if (o->size < td_min_bs(td)) {
943                 log_err("fio: blocksize too large for data set\n");
944                 goto err_out;
945         }
946
947         /*
948          * See if we need to extend some files
949          */
950         if (need_extend) {
951                 temp_stall_ts = 1;
952                 if (output_format & FIO_OUTPUT_NORMAL)
953                         log_info("%s: Laying out IO file(s) (%u file(s) / %lluMiB)\n",
954                                  o->name, need_extend, extend_size >> 20);
955
956                 for_each_file(td, f, i) {
957                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
958
959                         if (!fio_file_extend(f))
960                                 continue;
961
962                         assert(f->filetype == FIO_TYPE_FILE);
963                         fio_file_clear_extend(f);
964                         if (!o->fill_device) {
965                                 old_len = f->real_file_size;
966                                 extend_len = f->io_size + f->file_offset -
967                                                 old_len;
968                         }
969                         f->real_file_size = (f->io_size + f->file_offset);
970                         err = extend_file(td, f);
971                         if (err)
972                                 break;
973
974                         err = __file_invalidate_cache(td, f, old_len,
975                                                                 extend_len);
976
977                         /*
978                          * Shut up static checker
979                          */
980                         if (f->fd != -1)
981                                 close(f->fd);
982
983                         f->fd = -1;
984                         if (err)
985                                 break;
986                 }
987                 temp_stall_ts = 0;
988         }
989
990         if (err)
991                 goto err_out;
992
993         if (!o->zone_size)
994                 o->zone_size = o->size;
995
996         /*
997          * iolog already set the total io size, if we read back
998          * stored entries.
999          */
1000         if (!o->read_iolog_file) {
1001                 if (o->io_limit)
1002                         td->total_io_size = o->io_limit * o->loops;
1003                 else
1004                         td->total_io_size = o->size * o->loops;
1005         }
1006
1007 done:
1008         if (o->create_only)
1009                 td->done = 1;
1010
1011         td_restore_runstate(td, old_state);
1012         return 0;
1013 err_offset:
1014         log_err("%s: you need to specify valid offset=\n", o->name);
1015 err_out:
1016         td_restore_runstate(td, old_state);
1017         return 1;
1018 }
1019
1020 int pre_read_files(struct thread_data *td)
1021 {
1022         struct fio_file *f;
1023         unsigned int i;
1024
1025         dprint(FD_FILE, "pre_read files\n");
1026
1027         for_each_file(td, f, i) {
1028                 pre_read_file(td, f);
1029         }
1030
1031         return 1;
1032 }
1033
1034 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1035 {
1036         unsigned int range_size, seed;
1037         unsigned long nranges;
1038         uint64_t fsize;
1039
1040         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1041         fsize = min(f->real_file_size, f->io_size);
1042
1043         nranges = (fsize + range_size - 1) / range_size;
1044
1045         seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1046         if (!td->o.rand_repeatable)
1047                 seed = td->rand_seeds[4];
1048
1049         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1050                 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1051         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1052                 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1053         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1054                 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1055
1056         return 1;
1057 }
1058
1059 static int init_rand_distribution(struct thread_data *td)
1060 {
1061         struct fio_file *f;
1062         unsigned int i;
1063         int state;
1064
1065         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1066                 return 0;
1067
1068         state = td_bump_runstate(td, TD_SETTING_UP);
1069
1070         for_each_file(td, f, i)
1071                 __init_rand_distribution(td, f);
1072
1073         td_restore_runstate(td, state);
1074
1075         return 1;
1076 }
1077
1078 /*
1079  * Check if the number of blocks exceeds the randomness capability of
1080  * the selected generator. Tausworthe is 32-bit, the others are fullly
1081  * 64-bit capable.
1082  */
1083 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1084                                  uint64_t blocks)
1085 {
1086         if (blocks <= FRAND32_MAX)
1087                 return 0;
1088         if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1089                 return 0;
1090
1091         /*
1092          * If the user hasn't specified a random generator, switch
1093          * to tausworthe64 with informational warning. If the user did
1094          * specify one, just warn.
1095          */
1096         log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1097                         f->file_name);
1098
1099         if (!fio_option_is_set(&td->o, random_generator)) {
1100                 log_info("fio: Switching to tausworthe64. Use the "
1101                          "random_generator= option to get rid of this "
1102                          "warning.\n");
1103                 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1104                 return 0;
1105         }
1106
1107         /*
1108          * Just make this information to avoid breaking scripts.
1109          */
1110         log_info("fio: Use the random_generator= option to switch to lfsr or "
1111                          "tausworthe64.\n");
1112         return 0;
1113 }
1114
1115 int init_random_map(struct thread_data *td)
1116 {
1117         unsigned long long blocks;
1118         struct fio_file *f;
1119         unsigned int i;
1120
1121         if (init_rand_distribution(td))
1122                 return 0;
1123         if (!td_random(td))
1124                 return 0;
1125
1126         for_each_file(td, f, i) {
1127                 uint64_t fsize = min(f->real_file_size, f->io_size);
1128
1129                 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1130
1131                 if (check_rand_gen_limits(td, f, blocks))
1132                         return 1;
1133
1134                 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1135                         unsigned long seed;
1136
1137                         seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1138
1139                         if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1140                                 fio_file_set_lfsr(f);
1141                                 continue;
1142                         }
1143                 } else if (!td->o.norandommap) {
1144                         f->io_axmap = axmap_new(blocks);
1145                         if (f->io_axmap) {
1146                                 fio_file_set_axmap(f);
1147                                 continue;
1148                         }
1149                 } else if (td->o.norandommap)
1150                         continue;
1151
1152                 if (!td->o.softrandommap) {
1153                         log_err("fio: failed allocating random map. If running"
1154                                 " a large number of jobs, try the 'norandommap'"
1155                                 " option or set 'softrandommap'. Or give"
1156                                 " a larger --alloc-size to fio.\n");
1157                         return 1;
1158                 }
1159
1160                 log_info("fio: file %s failed allocating random map. Running "
1161                          "job without.\n", f->file_name);
1162         }
1163
1164         return 0;
1165 }
1166
1167 void close_files(struct thread_data *td)
1168 {
1169         struct fio_file *f;
1170         unsigned int i;
1171
1172         for_each_file(td, f, i) {
1173                 if (fio_file_open(f))
1174                         td_io_close_file(td, f);
1175         }
1176 }
1177
1178 void close_and_free_files(struct thread_data *td)
1179 {
1180         struct fio_file *f;
1181         unsigned int i;
1182
1183         dprint(FD_FILE, "close files\n");
1184
1185         for_each_file(td, f, i) {
1186                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1187                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1188                         td_io_unlink_file(td, f);
1189                 }
1190
1191                 if (fio_file_open(f))
1192                         td_io_close_file(td, f);
1193
1194                 remove_file_hash(f);
1195
1196                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1197                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1198                         td_io_unlink_file(td, f);
1199                 }
1200
1201                 sfree(f->file_name);
1202                 f->file_name = NULL;
1203                 if (fio_file_axmap(f)) {
1204                         axmap_free(f->io_axmap);
1205                         f->io_axmap = NULL;
1206                 }
1207                 sfree(f);
1208         }
1209
1210         td->o.filename = NULL;
1211         free(td->files);
1212         free(td->file_locks);
1213         td->files_index = 0;
1214         td->files = NULL;
1215         td->file_locks = NULL;
1216         td->o.file_lock_mode = FILE_LOCK_NONE;
1217         td->o.nr_files = 0;
1218 }
1219
1220 static void get_file_type(struct fio_file *f)
1221 {
1222         struct stat sb;
1223
1224         if (!strcmp(f->file_name, "-"))
1225                 f->filetype = FIO_TYPE_PIPE;
1226         else
1227                 f->filetype = FIO_TYPE_FILE;
1228
1229 #ifdef WIN32
1230         /* \\.\ is the device namespace in Windows, where every file is
1231          * a block device */
1232         if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1233                 f->filetype = FIO_TYPE_BLOCK;
1234 #endif
1235
1236         if (!stat(f->file_name, &sb)) {
1237                 if (S_ISBLK(sb.st_mode))
1238                         f->filetype = FIO_TYPE_BLOCK;
1239                 else if (S_ISCHR(sb.st_mode))
1240                         f->filetype = FIO_TYPE_CHAR;
1241                 else if (S_ISFIFO(sb.st_mode))
1242                         f->filetype = FIO_TYPE_PIPE;
1243         }
1244 }
1245
1246 static bool __is_already_allocated(const char *fname, bool set)
1247 {
1248         struct flist_head *entry;
1249         bool ret;
1250
1251         ret = file_bloom_exists(fname, set);
1252         if (!ret)
1253                 return ret;
1254
1255         flist_for_each(entry, &filename_list) {
1256                 struct file_name *fn;
1257
1258                 fn = flist_entry(entry, struct file_name, list);
1259
1260                 if (!strcmp(fn->filename, fname))
1261                         return true;
1262         }
1263
1264         return false;
1265 }
1266
1267 static bool is_already_allocated(const char *fname)
1268 {
1269         bool ret;
1270
1271         fio_file_hash_lock();
1272         ret = __is_already_allocated(fname, false);
1273         fio_file_hash_unlock();
1274
1275         return ret;
1276 }
1277
1278 static void set_already_allocated(const char *fname)
1279 {
1280         struct file_name *fn;
1281
1282         fn = malloc(sizeof(struct file_name));
1283         fn->filename = strdup(fname);
1284
1285         fio_file_hash_lock();
1286         if (!__is_already_allocated(fname, true)) {
1287                 flist_add_tail(&fn->list, &filename_list);
1288                 fn = NULL;
1289         }
1290         fio_file_hash_unlock();
1291
1292         if (fn) {
1293                 free(fn->filename);
1294                 free(fn);
1295         }
1296 }
1297
1298 static void free_already_allocated(void)
1299 {
1300         struct flist_head *entry, *tmp;
1301         struct file_name *fn;
1302
1303         if (flist_empty(&filename_list))
1304                 return;
1305
1306         fio_file_hash_lock();
1307         flist_for_each_safe(entry, tmp, &filename_list) {
1308                 fn = flist_entry(entry, struct file_name, list);
1309                 free(fn->filename);
1310                 flist_del(&fn->list);
1311                 free(fn);
1312         }
1313
1314         fio_file_hash_unlock();
1315 }
1316
1317 static struct fio_file *alloc_new_file(struct thread_data *td)
1318 {
1319         struct fio_file *f;
1320
1321         f = smalloc(sizeof(*f));
1322         if (!f) {
1323                 assert(0);
1324                 return NULL;
1325         }
1326
1327         f->fd = -1;
1328         f->shadow_fd = -1;
1329         fio_file_reset(td, f);
1330         return f;
1331 }
1332
1333 bool exists_and_not_regfile(const char *filename)
1334 {
1335         struct stat sb;
1336
1337         if (lstat(filename, &sb) == -1)
1338                 return false;
1339
1340 #ifndef WIN32 /* NOT Windows */
1341         if (S_ISREG(sb.st_mode))
1342                 return false;
1343 #else
1344         /* \\.\ is the device namespace in Windows, where every file
1345          * is a device node */
1346         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1347                 return false;
1348 #endif
1349
1350         return true;
1351 }
1352
1353 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1354 {
1355         int cur_files = td->files_index;
1356         char file_name[PATH_MAX];
1357         struct fio_file *f;
1358         int len = 0;
1359
1360         dprint(FD_FILE, "add file %s\n", fname);
1361
1362         if (td->o.directory)
1363                 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1364                                         td->o.unique_filename);
1365
1366         sprintf(file_name + len, "%s", fname);
1367
1368         /* clean cloned siblings using existing files */
1369         if (numjob && is_already_allocated(file_name) &&
1370             !exists_and_not_regfile(fname))
1371                 return 0;
1372
1373         f = alloc_new_file(td);
1374
1375         if (td->files_size <= td->files_index) {
1376                 unsigned int new_size = td->o.nr_files + 1;
1377
1378                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1379
1380                 td->files = realloc(td->files, new_size * sizeof(f));
1381                 if (td->files == NULL) {
1382                         log_err("fio: realloc OOM\n");
1383                         assert(0);
1384                 }
1385                 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1386                         td->file_locks = realloc(td->file_locks, new_size);
1387                         if (!td->file_locks) {
1388                                 log_err("fio: realloc OOM\n");
1389                                 assert(0);
1390                         }
1391                         td->file_locks[cur_files] = FILE_LOCK_NONE;
1392                 }
1393                 td->files_size = new_size;
1394         }
1395         td->files[cur_files] = f;
1396         f->fileno = cur_files;
1397
1398         /*
1399          * init function, io engine may not be loaded yet
1400          */
1401         if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1402                 f->real_file_size = -1ULL;
1403
1404         f->file_name = smalloc_strdup(file_name);
1405         if (!f->file_name)
1406                 assert(0);
1407
1408         get_file_type(f);
1409
1410         switch (td->o.file_lock_mode) {
1411         case FILE_LOCK_NONE:
1412                 break;
1413         case FILE_LOCK_READWRITE:
1414                 f->rwlock = fio_rwlock_init();
1415                 break;
1416         case FILE_LOCK_EXCLUSIVE:
1417                 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1418                 break;
1419         default:
1420                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1421                 assert(0);
1422         }
1423
1424         td->files_index++;
1425         if (f->filetype == FIO_TYPE_FILE)
1426                 td->nr_normal_files++;
1427
1428         set_already_allocated(file_name);
1429
1430         if (inc)
1431                 td->o.nr_files++;
1432
1433         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1434                                                         cur_files);
1435
1436         return cur_files;
1437 }
1438
1439 int add_file_exclusive(struct thread_data *td, const char *fname)
1440 {
1441         struct fio_file *f;
1442         unsigned int i;
1443
1444         for_each_file(td, f, i) {
1445                 if (!strcmp(f->file_name, fname))
1446                         return i;
1447         }
1448
1449         return add_file(td, fname, 0, 1);
1450 }
1451
1452 void get_file(struct fio_file *f)
1453 {
1454         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1455         assert(fio_file_open(f));
1456         f->references++;
1457 }
1458
1459 int put_file(struct thread_data *td, struct fio_file *f)
1460 {
1461         int f_ret = 0, ret = 0;
1462
1463         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1464
1465         if (!fio_file_open(f)) {
1466                 assert(f->fd == -1);
1467                 return 0;
1468         }
1469
1470         assert(f->references);
1471         if (--f->references)
1472                 return 0;
1473
1474         if (should_fsync(td) && td->o.fsync_on_close) {
1475                 f_ret = fsync(f->fd);
1476                 if (f_ret < 0)
1477                         f_ret = errno;
1478         }
1479
1480         if (td->io_ops->close_file)
1481                 ret = td->io_ops->close_file(td, f);
1482
1483         if (!ret)
1484                 ret = f_ret;
1485
1486         td->nr_open_files--;
1487         fio_file_clear_open(f);
1488         assert(f->fd == -1);
1489         return ret;
1490 }
1491
1492 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1493 {
1494         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1495                 return;
1496
1497         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1498                 if (ddir == DDIR_READ)
1499                         fio_rwlock_read(f->rwlock);
1500                 else
1501                         fio_rwlock_write(f->rwlock);
1502         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1503                 fio_mutex_down(f->lock);
1504
1505         td->file_locks[f->fileno] = td->o.file_lock_mode;
1506 }
1507
1508 void unlock_file(struct thread_data *td, struct fio_file *f)
1509 {
1510         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1511                 return;
1512
1513         if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1514                 fio_rwlock_unlock(f->rwlock);
1515         else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1516                 fio_mutex_up(f->lock);
1517
1518         td->file_locks[f->fileno] = FILE_LOCK_NONE;
1519 }
1520
1521 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1522 {
1523         if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1524                 return;
1525         if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1526                 unlock_file(td, f);
1527 }
1528
1529 static int recurse_dir(struct thread_data *td, const char *dirname)
1530 {
1531         struct dirent *dir;
1532         int ret = 0;
1533         DIR *D;
1534
1535         D = opendir(dirname);
1536         if (!D) {
1537                 char buf[FIO_VERROR_SIZE];
1538
1539                 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1540                 td_verror(td, errno, buf);
1541                 return 1;
1542         }
1543
1544         while ((dir = readdir(D)) != NULL) {
1545                 char full_path[PATH_MAX];
1546                 struct stat sb;
1547
1548                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1549                         continue;
1550
1551                 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1552
1553                 if (lstat(full_path, &sb) == -1) {
1554                         if (errno != ENOENT) {
1555                                 td_verror(td, errno, "stat");
1556                                 ret = 1;
1557                                 break;
1558                         }
1559                 }
1560
1561                 if (S_ISREG(sb.st_mode)) {
1562                         add_file(td, full_path, 0, 1);
1563                         continue;
1564                 }
1565                 if (!S_ISDIR(sb.st_mode))
1566                         continue;
1567
1568                 ret = recurse_dir(td, full_path);
1569                 if (ret)
1570                         break;
1571         }
1572
1573         closedir(D);
1574         return ret;
1575 }
1576
1577 int add_dir_files(struct thread_data *td, const char *path)
1578 {
1579         int ret = recurse_dir(td, path);
1580
1581         if (!ret)
1582                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1583
1584         return ret;
1585 }
1586
1587 void dup_files(struct thread_data *td, struct thread_data *org)
1588 {
1589         struct fio_file *f;
1590         unsigned int i;
1591
1592         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1593
1594         if (!org->files)
1595                 return;
1596
1597         td->files = malloc(org->files_index * sizeof(f));
1598
1599         if (td->o.file_lock_mode != FILE_LOCK_NONE)
1600                 td->file_locks = malloc(org->files_index);
1601
1602         for_each_file(org, f, i) {
1603                 struct fio_file *__f;
1604
1605                 __f = alloc_new_file(td);
1606
1607                 if (f->file_name) {
1608                         __f->file_name = smalloc_strdup(f->file_name);
1609                         if (!__f->file_name)
1610                                 assert(0);
1611
1612                         __f->filetype = f->filetype;
1613                 }
1614
1615                 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1616                         __f->lock = f->lock;
1617                 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1618                         __f->rwlock = f->rwlock;
1619
1620                 td->files[i] = __f;
1621         }
1622 }
1623
1624 /*
1625  * Returns the index that matches the filename, or -1 if not there
1626  */
1627 int get_fileno(struct thread_data *td, const char *fname)
1628 {
1629         struct fio_file *f;
1630         unsigned int i;
1631
1632         for_each_file(td, f, i)
1633                 if (!strcmp(f->file_name, fname))
1634                         return i;
1635
1636         return -1;
1637 }
1638
1639 /*
1640  * For log usage, where we add/open/close files automatically
1641  */
1642 void free_release_files(struct thread_data *td)
1643 {
1644         close_files(td);
1645         td->o.nr_files = 0;
1646         td->o.open_files = 0;
1647         td->files_index = 0;
1648         td->nr_normal_files = 0;
1649 }
1650
1651 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1652 {
1653         int i;
1654
1655         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1656                 f->last_pos[i] = f->file_offset;
1657                 f->last_start[i] = -1ULL;
1658         }
1659
1660         if (fio_file_axmap(f))
1661                 axmap_reset(f->io_axmap);
1662         else if (fio_file_lfsr(f))
1663                 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1664 }
1665
1666 bool fio_files_done(struct thread_data *td)
1667 {
1668         struct fio_file *f;
1669         unsigned int i;
1670
1671         for_each_file(td, f, i)
1672                 if (!fio_file_done(f))
1673                         return false;
1674
1675         return true;
1676 }
1677
1678 /* free memory used in initialization phase only */
1679 void filesetup_mem_free(void)
1680 {
1681         free_already_allocated();
1682 }