Improve LFSR implementation
[fio.git] / filesetup.c
CommitLineData
53cdc686
JA
1#include <unistd.h>
2#include <fcntl.h>
3#include <string.h>
4#include <assert.h>
bbf6b540 5#include <dirent.h>
d74ac843 6#include <libgen.h>
53cdc686
JA
7#include <sys/stat.h>
8#include <sys/mman.h>
bbf6b540 9#include <sys/types.h>
53cdc686
JA
10
11#include "fio.h"
f17c4392 12#include "smalloc.h"
4906e0b5 13#include "filehash.h"
ecc314ba 14#include "os/os.h"
2316296a 15#include "hash.h"
7ebd796f 16#include "lib/axmap.h"
53cdc686 17
97ac992c 18#ifdef CONFIG_LINUX_FALLOCATE
a596f047
EG
19#include <linux/falloc.h>
20#endif
21
7172cfe8
JA
22static int root_warn;
23
c592b9fe
JA
24static inline void clear_error(struct thread_data *td)
25{
26 td->error = 0;
27 td->verror[0] = '\0';
28}
29
3baddf24
JA
30/*
31 * Leaves f->fd open on success, caller must close
32 */
7bb48f84 33static int extend_file(struct thread_data *td, struct fio_file *f)
25205e97 34{
ea443657 35 int r, new_layout = 0, unlink_file = 0, flags;
25205e97
JA
36 unsigned long long left;
37 unsigned int bs;
38 char *b;
b2a15192 39
4241ea8f
JA
40 if (read_only) {
41 log_err("fio: refusing extend of file due to read-only\n");
42 return 0;
43 }
44
507a702f
JA
45 /*
46 * check if we need to lay the file out complete again. fio
47 * does that for operations involving reads, or for writes
48 * where overwrite is set
49 */
ffdfabd4
JA
50 if (td_read(td) || (td_write(td) && td->o.overwrite) ||
51 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
507a702f 52 new_layout = 1;
ea443657
JA
53 if (td_write(td) && !td->o.overwrite)
54 unlink_file = 1;
507a702f 55
6ae1f57f 56 if (unlink_file || new_layout) {
bd199f2b 57 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
982016d6 58 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
7bb48f84
JA
59 td_verror(td, errno, "unlink");
60 return 1;
61 }
62 }
63
507a702f
JA
64 flags = O_WRONLY | O_CREAT;
65 if (new_layout)
66 flags |= O_TRUNC;
67
ee56ad50 68 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
507a702f 69 f->fd = open(f->file_name, flags, 0644);
53cdc686 70 if (f->fd < 0) {
e1161c32 71 td_verror(td, errno, "open");
53cdc686
JA
72 return 1;
73 }
74
97ac992c 75#ifdef CONFIG_POSIX_FALLOCATE
a596f047
EG
76 if (!td->o.fill_device) {
77 switch (td->o.fallocate_mode) {
78 case FIO_FALLOCATE_NONE:
79 break;
80 case FIO_FALLOCATE_POSIX:
81 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
4b91ee8f
JA
82 f->file_name,
83 (unsigned long long) f->real_file_size);
a596f047
EG
84
85 r = posix_fallocate(f->fd, 0, f->real_file_size);
86 if (r > 0) {
87 log_err("fio: posix_fallocate fails: %s\n",
88 strerror(r));
89 }
90 break;
97ac992c 91#ifdef CONFIG_LINUX_FALLOCATE
a596f047
EG
92 case FIO_FALLOCATE_KEEP_SIZE:
93 dprint(FD_FILE,
94 "fallocate(FALLOC_FL_KEEP_SIZE) "
4b91ee8f
JA
95 "file %s size %llu\n", f->file_name,
96 (unsigned long long) f->real_file_size);
7bc8c2cf 97
a596f047
EG
98 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
99 f->real_file_size);
100 if (r != 0) {
101 td_verror(td, errno, "fallocate");
102 }
103 break;
97ac992c 104#endif /* CONFIG_LINUX_FALLOCATE */
a596f047
EG
105 default:
106 log_err("fio: unknown fallocate mode: %d\n",
107 td->o.fallocate_mode);
108 assert(0);
7bc8c2cf
JA
109 }
110 }
97ac992c 111#endif /* CONFIG_POSIX_FALLOCATE */
9b836561 112
fc74ac1d
SL
113 if (!new_layout)
114 goto done;
115
5e0074c2
JA
116 /*
117 * The size will be -1ULL when fill_device is used, so don't truncate
118 * or fallocate this file, just write it
119 */
120 if (!td->o.fill_device) {
121 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
4b91ee8f 122 (unsigned long long) f->real_file_size);
5e0074c2
JA
123 if (ftruncate(f->fd, f->real_file_size) == -1) {
124 td_verror(td, errno, "ftruncate");
125 goto err;
126 }
5e0074c2 127 }
40f8298c 128
2dc1bbeb
JA
129 b = malloc(td->o.max_bs[DDIR_WRITE]);
130 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
53cdc686 131
7bb48f84 132 left = f->real_file_size;
53cdc686 133 while (left && !td->terminate) {
2dc1bbeb 134 bs = td->o.max_bs[DDIR_WRITE];
53cdc686
JA
135 if (bs > left)
136 bs = left;
137
138 r = write(f->fd, b, bs);
139
5e0074c2
JA
140 if (r > 0) {
141 left -= r;
53cdc686
JA
142 continue;
143 } else {
5e0074c2
JA
144 if (r < 0) {
145 int __e = errno;
146
147 if (__e == ENOSPC) {
148 if (td->o.fill_device)
149 break;
150 log_info("fio: ENOSPC on laying out "
151 "file, stopping\n");
152 break;
153 }
e1161c32 154 td_verror(td, errno, "write");
5e0074c2 155 } else
e1161c32 156 td_verror(td, EIO, "write");
53cdc686
JA
157
158 break;
159 }
160 }
161
ffdfabd4
JA
162 if (td->terminate) {
163 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
53cdc686 164 unlink(f->file_name);
ffdfabd4 165 } else if (td->o.create_fsync) {
98e1ac4e
JA
166 if (fsync(f->fd) < 0) {
167 td_verror(td, errno, "fsync");
168 goto err;
169 }
170 }
0d1cd207 171 if (td->o.fill_device && !td_write(td)) {
d6aed795 172 fio_file_clear_size_known(f);
5e0074c2
JA
173 if (td_io_get_file_size(td, f))
174 goto err;
175 if (f->io_size > f->real_file_size)
176 f->io_size = f->real_file_size;
177 }
53cdc686
JA
178
179 free(b);
507a702f 180done:
53cdc686
JA
181 return 0;
182err:
183 close(f->fd);
184 f->fd = -1;
185 return 1;
186}
187
afad68f7
ZY
188static int pre_read_file(struct thread_data *td, struct fio_file *f)
189{
b0f65863 190 int r, did_open = 0, old_runstate;
afad68f7
ZY
191 unsigned long long left;
192 unsigned int bs;
193 char *b;
194
9c0d2241
JA
195 if (td->io_ops->flags & FIO_PIPEIO)
196 return 0;
197
d6aed795 198 if (!fio_file_open(f)) {
b0f65863
JA
199 if (td->io_ops->open_file(td, f)) {
200 log_err("fio: cannot pre-read, failed to open file\n");
201 return 1;
202 }
203 did_open = 1;
204 }
205
206 old_runstate = td->runstate;
207 td_set_runstate(td, TD_PRE_READING);
208
afad68f7
ZY
209 bs = td->o.max_bs[DDIR_READ];
210 b = malloc(bs);
211 memset(b, 0, bs);
212
213 lseek(f->fd, f->file_offset, SEEK_SET);
214 left = f->io_size;
215
216 while (left && !td->terminate) {
217 if (bs > left)
218 bs = left;
219
220 r = read(f->fd, b, bs);
221
222 if (r == (int) bs) {
223 left -= bs;
224 continue;
225 } else {
226 td_verror(td, EIO, "pre_read");
227 break;
228 }
229 }
230
b0f65863
JA
231 td_set_runstate(td, old_runstate);
232
233 if (did_open)
234 td->io_ops->close_file(td, f);
afad68f7
ZY
235 free(b);
236 return 0;
237}
238
7bb48f84 239static unsigned long long get_rand_file_size(struct thread_data *td)
9c60ce64 240{
dc873b6f 241 unsigned long long ret, sized;
1294c3ec 242 unsigned long r;
9c60ce64 243
4c07ad86
JA
244 if (td->o.use_os_rand) {
245 r = os_random_long(&td->file_size_state);
246 sized = td->o.file_size_high - td->o.file_size_low;
247 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
248 } else {
249 r = __rand(&td->__file_size_state);
250 sized = td->o.file_size_high - td->o.file_size_low;
251 ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
252 }
253
5ec10eaa 254 ret += td->o.file_size_low;
2dc1bbeb 255 ret -= (ret % td->o.rw_min_bs);
9c60ce64
JA
256 return ret;
257}
258
53cdc686
JA
259static int file_size(struct thread_data *td, struct fio_file *f)
260{
261 struct stat st;
262
df9c26b1 263 if (stat(f->file_name, &st) == -1) {
7bb48f84
JA
264 td_verror(td, errno, "fstat");
265 return 1;
266 }
53cdc686 267
7bb48f84 268 f->real_file_size = st.st_size;
53cdc686
JA
269 return 0;
270}
271
272static int bdev_size(struct thread_data *td, struct fio_file *f)
273{
9b836561 274 unsigned long long bytes = 0;
53cdc686
JA
275 int r;
276
df9c26b1
JA
277 if (td->io_ops->open_file(td, f)) {
278 log_err("fio: failed opening blockdev %s for size check\n",
279 f->file_name);
280 return 1;
281 }
282
ecc314ba 283 r = blockdev_size(f, &bytes);
53cdc686 284 if (r) {
e1161c32 285 td_verror(td, r, "blockdev_size");
df9c26b1 286 goto err;
53cdc686
JA
287 }
288
7ab077ab
JA
289 if (!bytes) {
290 log_err("%s: zero sized block device?\n", f->file_name);
df9c26b1 291 goto err;
7ab077ab
JA
292 }
293
53cdc686 294 f->real_file_size = bytes;
22a57ba8 295 td->io_ops->close_file(td, f);
53cdc686 296 return 0;
df9c26b1
JA
297err:
298 td->io_ops->close_file(td, f);
299 return 1;
53cdc686
JA
300}
301
4ccdccd1
JA
302static int char_size(struct thread_data *td, struct fio_file *f)
303{
304#ifdef FIO_HAVE_CHARDEV_SIZE
9b836561 305 unsigned long long bytes = 0;
4ccdccd1
JA
306 int r;
307
308 if (td->io_ops->open_file(td, f)) {
309 log_err("fio: failed opening blockdev %s for size check\n",
310 f->file_name);
311 return 1;
312 }
313
ecc314ba 314 r = chardev_size(f, &bytes);
4ccdccd1
JA
315 if (r) {
316 td_verror(td, r, "chardev_size");
317 goto err;
318 }
319
320 if (!bytes) {
321 log_err("%s: zero sized char device?\n", f->file_name);
322 goto err;
323 }
324
325 f->real_file_size = bytes;
326 td->io_ops->close_file(td, f);
327 return 0;
328err:
329 td->io_ops->close_file(td, f);
330 return 1;
331#else
332 f->real_file_size = -1ULL;
333 return 0;
334#endif
335}
336
53cdc686
JA
337static int get_file_size(struct thread_data *td, struct fio_file *f)
338{
339 int ret = 0;
340
d6aed795 341 if (fio_file_size_known(f))
409b3417
JA
342 return 0;
343
7bb48f84
JA
344 if (f->filetype == FIO_TYPE_FILE)
345 ret = file_size(td, f);
346 else if (f->filetype == FIO_TYPE_BD)
53cdc686 347 ret = bdev_size(td, f);
4ccdccd1
JA
348 else if (f->filetype == FIO_TYPE_CHAR)
349 ret = char_size(td, f);
53cdc686
JA
350 else
351 f->real_file_size = -1;
352
353 if (ret)
354 return ret;
355
356 if (f->file_offset > f->real_file_size) {
0f2152c1 357 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
5ec10eaa 358 f->file_offset, f->real_file_size);
53cdc686
JA
359 return 1;
360 }
361
d6aed795 362 fio_file_set_size_known(f);
53cdc686
JA
363 return 0;
364}
365
3baddf24
JA
366static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
367 unsigned long long off,
368 unsigned long long len)
e5b401d4
JA
369{
370 int ret = 0;
371
5e0074c2 372 if (len == -1ULL)
3baddf24
JA
373 len = f->io_size;
374 if (off == -1ULL)
375 off = f->file_offset;
ee56ad50 376
0d1cd207
JA
377 if (len == -1ULL || off == -1ULL)
378 return 0;
379
3baddf24
JA
380 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
381 len);
b5af8293 382
e5b401d4
JA
383 /*
384 * FIXME: add blockdev flushing too
385 */
a1c58075 386 if (f->mmap_ptr) {
03e20d68 387 ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED);
a1c58075 388#ifdef FIO_MADV_FREE
03e20d68 389 (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
a1c58075
JA
390#endif
391 } else if (f->filetype == FIO_TYPE_FILE) {
ecc314ba 392 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
5ec10eaa 393 } else if (f->filetype == FIO_TYPE_BD) {
ecc314ba 394 ret = blockdev_invalidate_cache(f);
7e0e25c9 395 if (ret < 0 && errno == EACCES && geteuid()) {
7172cfe8 396 if (!root_warn) {
5ec10eaa
JA
397 log_err("fio: only root may flush block "
398 "devices. Cache flush bypassed!\n");
7172cfe8
JA
399 root_warn = 1;
400 }
7e0e25c9
JA
401 ret = 0;
402 }
b5605e9d 403 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
e5b401d4
JA
404 ret = 0;
405
406 if (ret < 0) {
e1161c32 407 td_verror(td, errno, "invalidate_cache");
e5b401d4 408 return 1;
3baddf24
JA
409 } else if (ret > 0) {
410 td_verror(td, ret, "invalidate_cache");
411 return 1;
e5b401d4
JA
412 }
413
ad2da605 414 return ret;
3baddf24
JA
415
416}
417
418int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
419{
d6aed795 420 if (!fio_file_open(f))
a5fb461f
JA
421 return 0;
422
5e0074c2 423 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
e5b401d4
JA
424}
425
6977bcd0 426int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
53cdc686 427{
6977bcd0
JA
428 int ret = 0;
429
ee56ad50 430 dprint(FD_FILE, "fd close %s\n", f->file_name);
4906e0b5
JA
431
432 remove_file_hash(f);
433
6977bcd0
JA
434 if (close(f->fd) < 0)
435 ret = errno;
436
b5af8293 437 f->fd = -1;
e6c4d732
JA
438
439 if (f->shadow_fd != -1) {
440 close(f->shadow_fd);
441 f->shadow_fd = -1;
442 }
443
6977bcd0 444 return ret;
53cdc686
JA
445}
446
1ccc6dc7 447int file_lookup_open(struct fio_file *f, int flags)
53cdc686 448{
29c1349f 449 struct fio_file *__f;
4d4e80f2
JA
450 int from_hash;
451
452 __f = lookup_file_hash(f->file_name);
453 if (__f) {
9efef3c4 454 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
4d4e80f2
JA
455 /*
456 * racy, need the __f->lock locked
457 */
458 f->lock = __f->lock;
459 f->lock_owner = __f->lock_owner;
460 f->lock_batch = __f->lock_batch;
461 f->lock_ddir = __f->lock_ddir;
4d4e80f2
JA
462 from_hash = 1;
463 } else {
9efef3c4 464 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
4d4e80f2
JA
465 from_hash = 0;
466 }
467
e8670ef8 468 f->fd = open(f->file_name, flags, 0600);
4d4e80f2
JA
469 return from_hash;
470}
471
e6c4d732
JA
472static int file_close_shadow_fds(struct thread_data *td)
473{
474 struct fio_file *f;
475 int num_closed = 0;
476 unsigned int i;
477
478 for_each_file(td, f, i) {
479 if (f->shadow_fd == -1)
480 continue;
481
482 close(f->shadow_fd);
483 f->shadow_fd = -1;
484 num_closed++;
485 }
486
487 return num_closed;
488}
489
4d4e80f2
JA
490int generic_open_file(struct thread_data *td, struct fio_file *f)
491{
66159828 492 int is_std = 0;
53cdc686 493 int flags = 0;
29c1349f 494 int from_hash = 0;
53cdc686 495
ee56ad50
JA
496 dprint(FD_FILE, "fd open %s\n", f->file_name);
497
6eaf09d6
SL
498 if (td_trim(td) && f->filetype != FIO_TYPE_BD) {
499 log_err("fio: trim only applies to block device\n");
500 return 1;
501 }
502
66159828
JA
503 if (!strcmp(f->file_name, "-")) {
504 if (td_rw(td)) {
505 log_err("fio: can't read/write to stdin/out\n");
506 return 1;
507 }
508 is_std = 1;
ce98fa66
JA
509
510 /*
511 * move output logging to stderr, if we are writing to stdout
512 */
513 if (td_write(td))
514 f_out = stderr;
66159828
JA
515 }
516
6eaf09d6
SL
517 if (td_trim(td))
518 goto skip_flags;
2dc1bbeb 519 if (td->o.odirect)
2fd233b7 520 flags |= OS_O_DIRECT;
2dc1bbeb 521 if (td->o.sync_io)
2fd233b7 522 flags |= O_SYNC;
814452bd
JA
523 if (td->o.create_on_open)
524 flags |= O_CREAT;
6eaf09d6
SL
525skip_flags:
526 if (f->filetype != FIO_TYPE_FILE)
527 flags |= FIO_O_NOATIME;
53cdc686 528
056f3459 529open_again:
660a1cb5 530 if (td_write(td)) {
17308158
JA
531 if (!read_only)
532 flags |= O_RDWR;
53cdc686 533
af52b345 534 if (f->filetype == FIO_TYPE_FILE)
2fd233b7 535 flags |= O_CREAT;
2fd233b7 536
66159828
JA
537 if (is_std)
538 f->fd = dup(STDOUT_FILENO);
4d4e80f2
JA
539 else
540 from_hash = file_lookup_open(f, flags);
6eaf09d6 541 } else if (td_read(td)) {
4241ea8f 542 if (f->filetype == FIO_TYPE_CHAR && !read_only)
2fd233b7
JA
543 flags |= O_RDWR;
544 else
545 flags |= O_RDONLY;
546
66159828
JA
547 if (is_std)
548 f->fd = dup(STDIN_FILENO);
4d4e80f2
JA
549 else
550 from_hash = file_lookup_open(f, flags);
6eaf09d6
SL
551 } else { //td trim
552 flags |= O_RDWR;
553 from_hash = file_lookup_open(f, flags);
53cdc686
JA
554 }
555
556 if (f->fd == -1) {
e4e33258 557 char buf[FIO_VERROR_SIZE];
e1161c32
JA
558 int __e = errno;
559
835d9b9e 560 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
5921e80c 561 flags &= ~FIO_O_NOATIME;
056f3459
AC
562 goto open_again;
563 }
e6c4d732
JA
564 if (__e == EMFILE && file_close_shadow_fds(td))
565 goto open_again;
056f3459 566
98ffb8f3 567 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
e4e33258 568
a93c5f04
JA
569 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
570 log_err("fio: looks like your file system does not " \
571 "support direct=1/buffered=0\n");
572 }
573
e4e33258 574 td_verror(td, __e, buf);
53cdc686
JA
575 }
576
29c1349f
JA
577 if (!from_hash && f->fd != -1) {
578 if (add_file_hash(f)) {
3f0ca9b9 579 int fio_unused ret;
29c1349f
JA
580
581 /*
e6c4d732
JA
582 * Stash away descriptor for later close. This is to
583 * work-around a "feature" on Linux, where a close of
584 * an fd that has been opened for write will trigger
585 * udev to call blkid to check partitions, fs id, etc.
586 * That polutes the device cache, which can slow down
587 * unbuffered accesses.
29c1349f 588 */
e6c4d732
JA
589 if (f->shadow_fd == -1)
590 f->shadow_fd = f->fd;
591 else {
592 /*
593 * OK to ignore, we haven't done anything
594 * with it
595 */
596 ret = generic_close_file(td, f);
597 }
29c1349f
JA
598 goto open_again;
599 }
600 }
4906e0b5 601
53cdc686 602 return 0;
b5af8293
JA
603}
604
df9c26b1 605int generic_get_file_size(struct thread_data *td, struct fio_file *f)
21972cde 606{
df9c26b1 607 return get_file_size(td, f);
21972cde
JA
608}
609
7bb48f84
JA
610/*
611 * open/close all files, so that ->real_file_size gets set
612 */
bab3fd58 613static int get_file_sizes(struct thread_data *td)
7bb48f84
JA
614{
615 struct fio_file *f;
616 unsigned int i;
bab3fd58 617 int err = 0;
7bb48f84
JA
618
619 for_each_file(td, f, i) {
5ec10eaa
JA
620 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
621 f->file_name);
9efef3c4 622
99a47c69 623 if (td_io_get_file_size(td, f)) {
40b44f4a
JA
624 if (td->error != ENOENT) {
625 log_err("%s\n", td->verror);
626 err = 1;
627 }
541d66d7 628 clear_error(td);
07eb79df 629 }
409b3417
JA
630
631 if (f->real_file_size == -1ULL && td->o.size)
632 f->real_file_size = td->o.size / td->o.nr_files;
7bb48f84 633 }
bab3fd58
JA
634
635 return err;
7bb48f84
JA
636}
637
2e3bd4c2
JA
638struct fio_mount {
639 struct flist_head list;
640 const char *base;
641 char __base[256];
642 unsigned int key;
643};
644
645/*
646 * Get free number of bytes for each file on each unique mount.
647 */
648static unsigned long long get_fs_free_counts(struct thread_data *td)
649{
650 struct flist_head *n, *tmp;
68b0316f 651 unsigned long long ret = 0;
2e3bd4c2
JA
652 struct fio_mount *fm;
653 FLIST_HEAD(list);
654 struct fio_file *f;
655 unsigned int i;
656
657 for_each_file(td, f, i) {
658 struct stat sb;
659 char buf[256];
660
4ccdccd1
JA
661 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
662 if (f->real_file_size != -1ULL)
663 ret += f->real_file_size;
68b0316f
JA
664 continue;
665 } else if (f->filetype != FIO_TYPE_FILE)
666 continue;
667
2e3bd4c2
JA
668 strcpy(buf, f->file_name);
669
670 if (stat(buf, &sb) < 0) {
671 if (errno != ENOENT)
672 break;
673 strcpy(buf, ".");
674 if (stat(buf, &sb) < 0)
675 break;
676 }
677
678 fm = NULL;
679 flist_for_each(n, &list) {
680 fm = flist_entry(n, struct fio_mount, list);
681 if (fm->key == sb.st_dev)
682 break;
683
684 fm = NULL;
685 }
686
687 if (fm)
688 continue;
689
690 fm = malloc(sizeof(*fm));
691 strcpy(fm->__base, buf);
692 fm->base = basename(fm->__base);
693 fm->key = sb.st_dev;
694 flist_add(&fm->list, &list);
695 }
696
2e3bd4c2
JA
697 flist_for_each_safe(n, tmp, &list) {
698 unsigned long long sz;
699
700 fm = flist_entry(n, struct fio_mount, list);
701 flist_del(&fm->list);
702
703 sz = get_fs_size(fm->base);
704 if (sz && sz != -1ULL)
705 ret += sz;
706
707 free(fm);
708 }
709
710 return ret;
711}
712
293b8c1f 713uint64_t get_start_offset(struct thread_data *td)
ce95d651
DE
714{
715 return td->o.start_offset +
716 (td->thread_number - 1) * td->o.offset_increment;
717}
718
7bb48f84
JA
719/*
720 * Open the files and setup files sizes, creating files if necessary.
721 */
53cdc686
JA
722int setup_files(struct thread_data *td)
723{
7bb48f84 724 unsigned long long total_size, extend_size;
53cdc686 725 struct fio_file *f;
af52b345 726 unsigned int i;
000b0803 727 int err = 0, need_extend;
53cdc686 728
ee56ad50
JA
729 dprint(FD_FILE, "setup files\n");
730
691c8fb0 731 if (td->o.read_iolog_file)
25460cf6 732 goto done;
691c8fb0 733
53cdc686
JA
734 /*
735 * if ioengine defines a setup() method, it's responsible for
7bb48f84
JA
736 * opening the files and setting f->real_file_size to indicate
737 * the valid range for that file.
53cdc686
JA
738 */
739 if (td->io_ops->setup)
7bb48f84
JA
740 err = td->io_ops->setup(td);
741 else
bab3fd58 742 err = get_file_sizes(td);
53cdc686 743
f1027063
JA
744 if (err)
745 return err;
746
0a7eb121 747 /*
7bb48f84
JA
748 * check sizes. if the files/devices do not exist and the size
749 * isn't passed to fio, abort.
0a7eb121 750 */
7bb48f84
JA
751 total_size = 0;
752 for_each_file(td, f, i) {
753 if (f->real_file_size == -1ULL)
754 total_size = -1ULL;
755 else
756 total_size += f->real_file_size;
757 }
0a7eb121 758
2e3bd4c2
JA
759 if (td->o.fill_device)
760 td->fill_device_size = get_fs_free_counts(td);
761
7bb48f84
JA
762 /*
763 * device/file sizes are zero and no size given, punt
764 */
1f809d15 765 if ((!total_size || total_size == -1ULL) && !td->o.size &&
aa31f1f1 766 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
7bb48f84 767 log_err("%s: you need to specify size=\n", td->o.name);
e1161c32 768 td_verror(td, EINVAL, "total_file_size");
53cdc686
JA
769 return 1;
770 }
771
7bb48f84
JA
772 /*
773 * now file sizes are known, so we can set ->io_size. if size= is
774 * not given, ->io_size is just equal to ->real_file_size. if size
775 * is given, ->io_size is size / nr_files.
776 */
777 extend_size = total_size = 0;
778 need_extend = 0;
779 for_each_file(td, f, i) {
ce95d651 780 f->file_offset = get_start_offset(td);
bcdedd0a 781
7bb48f84
JA
782 if (!td->o.file_size_low) {
783 /*
784 * no file size range given, file size is equal to
785 * total size divided by number of files. if that is
786 * zero, set it to the real file size.
787 */
788 f->io_size = td->o.size / td->o.nr_files;
65bdb10a 789 if (!f->io_size)
273f8c91 790 f->io_size = f->real_file_size - f->file_offset;
7bb48f84
JA
791 } else if (f->real_file_size < td->o.file_size_low ||
792 f->real_file_size > td->o.file_size_high) {
5ec10eaa 793 if (f->file_offset > td->o.file_size_low)
bcdedd0a 794 goto err_offset;
7bb48f84
JA
795 /*
796 * file size given. if it's fixed, use that. if it's a
797 * range, generate a random size in-between.
798 */
5ec10eaa
JA
799 if (td->o.file_size_low == td->o.file_size_high) {
800 f->io_size = td->o.file_size_low
801 - f->file_offset;
802 } else {
803 f->io_size = get_rand_file_size(td)
804 - f->file_offset;
805 }
65bdb10a 806 } else
bcdedd0a 807 f->io_size = f->real_file_size - f->file_offset;
53cdc686 808
7bb48f84
JA
809 if (f->io_size == -1ULL)
810 total_size = -1ULL;
4d002569
SL
811 else {
812 if (td->o.size_percent)
813 f->io_size = (f->io_size * td->o.size_percent) / 100;
7bb48f84 814 total_size += f->io_size;
4d002569 815 }
7bb48f84
JA
816
817 if (f->filetype == FIO_TYPE_FILE &&
bcdedd0a 818 (f->io_size + f->file_offset) > f->real_file_size &&
7bb48f84 819 !(td->io_ops->flags & FIO_DISKLESSIO)) {
814452bd
JA
820 if (!td->o.create_on_open) {
821 need_extend++;
822 extend_size += (f->io_size + f->file_offset);
823 } else
824 f->real_file_size = f->io_size + f->file_offset;
d6aed795 825 fio_file_set_extend(f);
5ec10eaa 826 }
7bb48f84 827 }
53cdc686 828
2298290e 829 if (!td->o.size || td->o.size > total_size)
7bb48f84 830 td->o.size = total_size;
21972cde 831
7bb48f84
JA
832 /*
833 * See if we need to extend some files
834 */
835 if (need_extend) {
836 temp_stall_ts = 1;
f3afa57e 837 if (output_format == FIO_OUTPUT_NORMAL)
a7ba8c5f 838 log_info("%s: Laying out IO file(s) (%u file(s) /"
0f2152c1 839 " %lluMB)\n", td->o.name, need_extend,
a7ba8c5f 840 extend_size >> 20);
7bb48f84
JA
841
842 for_each_file(td, f, i) {
5e0074c2 843 unsigned long long old_len = -1ULL, extend_len = -1ULL;
3baddf24 844
d6aed795 845 if (!fio_file_extend(f))
7bb48f84
JA
846 continue;
847
409b3417 848 assert(f->filetype == FIO_TYPE_FILE);
d6aed795 849 fio_file_clear_extend(f);
5e0074c2
JA
850 if (!td->o.fill_device) {
851 old_len = f->real_file_size;
0b9d69ec
JA
852 extend_len = f->io_size + f->file_offset -
853 old_len;
5e0074c2 854 }
bcdedd0a 855 f->real_file_size = (f->io_size + f->file_offset);
7bb48f84
JA
856 err = extend_file(td, f);
857 if (err)
3baddf24 858 break;
5e0074c2 859
3baddf24
JA
860 err = __file_invalidate_cache(td, f, old_len,
861 extend_len);
862 close(f->fd);
863 f->fd = -1;
864 if (err)
7bb48f84
JA
865 break;
866 }
867 temp_stall_ts = 0;
868 }
869
870 if (err)
871 return err;
872
873 if (!td->o.zone_size)
874 td->o.zone_size = td->o.size;
875
ea966f81
JA
876 /*
877 * iolog already set the total io size, if we read back
878 * stored entries.
879 */
880 if (!td->o.read_iolog_file)
881 td->total_io_size = td->o.size * td->o.loops;
25460cf6
JA
882
883done:
884 if (td->o.create_only)
885 td->done = 1;
886
7bb48f84 887 return 0;
bcdedd0a
YHJT
888err_offset:
889 log_err("%s: you need to specify valid offset=\n", td->o.name);
890 return 1;
53cdc686
JA
891}
892
afad68f7
ZY
893int pre_read_files(struct thread_data *td)
894{
895 struct fio_file *f;
896 unsigned int i;
897
898 dprint(FD_FILE, "pre_read files\n");
899
900 for_each_file(td, f, i) {
901 pre_read_file(td, f);
902 }
903
904 return 1;
905}
906
9c6f6316
JA
907static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
908{
2316296a 909 unsigned int range_size, seed;
9c6f6316 910 unsigned long nranges;
21415db9 911 uint64_t file_size;
9c6f6316
JA
912
913 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
21415db9 914 file_size = min(f->real_file_size, f->io_size);
9c6f6316 915
21415db9 916 nranges = (file_size + range_size - 1) / range_size;
9c6f6316 917
2316296a 918 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
8425687e
JA
919 if (!td->o.rand_repeatable)
920 seed = td->rand_seeds[4];
921
9c6f6316 922 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
2316296a 923 zipf_init(&f->zipf, nranges, td->o.zipf_theta, seed);
9c6f6316 924 else
2316296a 925 pareto_init(&f->zipf, nranges, td->o.pareto_h, seed);
9c6f6316
JA
926
927 return 1;
928}
929
930static int init_rand_distribution(struct thread_data *td)
931{
932 struct fio_file *f;
933 unsigned int i;
934 int state;
935
936 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
937 return 0;
938
939 state = td->runstate;
940 td_set_runstate(td, TD_SETTING_UP);
941 for_each_file(td, f, i)
942 __init_rand_distribution(td, f);
943 td_set_runstate(td, state);
944
945 return 1;
946}
947
68727076
JA
948int init_random_map(struct thread_data *td)
949{
51ede0b1 950 unsigned long long blocks;
68727076
JA
951 struct fio_file *f;
952 unsigned int i;
953
9c6f6316
JA
954 if (init_rand_distribution(td))
955 return 0;
3831a843 956 if (!td_random(td))
68727076
JA
957 return 0;
958
959 for_each_file(td, f, i) {
38f30c81
JA
960 uint64_t file_size = min(f->real_file_size, f->io_size);
961
53737ae0
JA
962 blocks = file_size / (unsigned long long) td->o.rw_min_bs;
963
8055e41d 964 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
82af46be
JA
965 unsigned long seed;
966
967 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
968
d474cbc9 969 if (!lfsr_init(&f->lfsr, blocks, seed, seed & 0xF))
8055e41d 970 continue;
3831a843 971 } else if (!td->o.norandommap) {
7ebd796f
JA
972 f->io_axmap = axmap_new(blocks);
973 if (f->io_axmap)
8055e41d 974 continue;
1cad7121
JA
975 } else if (td->o.norandommap)
976 continue;
ceadd59e 977
2b386d25 978 if (!td->o.softrandommap) {
5ec10eaa
JA
979 log_err("fio: failed allocating random map. If running"
980 " a large number of jobs, try the 'norandommap'"
2b386d25
JA
981 " option or set 'softrandommap'. Or give"
982 " a larger --alloc-size to fio.\n");
68727076
JA
983 return 1;
984 }
303032ae
JA
985
986 log_info("fio: file %s failed allocating random map. Running "
987 "job without.\n", f->file_name);
68727076
JA
988 }
989
990 return 0;
991}
992
53cdc686
JA
993void close_files(struct thread_data *td)
994{
0ab8db89 995 struct fio_file *f;
af52b345 996 unsigned int i;
53cdc686 997
2be3eec3
JA
998 for_each_file(td, f, i) {
999 if (fio_file_open(f))
1000 td_io_close_file(td, f);
1001 }
24ffd2c2
JA
1002}
1003
1004void close_and_free_files(struct thread_data *td)
1005{
1006 struct fio_file *f;
1007 unsigned int i;
1008
ee56ad50
JA
1009 dprint(FD_FILE, "close files\n");
1010
0ab8db89 1011 for_each_file(td, f, i) {
ffdfabd4
JA
1012 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1013 dprint(FD_FILE, "free unlink %s\n", f->file_name);
132ad46d 1014 unlink(f->file_name);
ffdfabd4 1015 }
bdb4e2e9 1016
22a57ba8
JA
1017 if (fio_file_open(f))
1018 td_io_close_file(td, f);
1019
b9fbcf21 1020 remove_file_hash(f);
b3dc7f07 1021
f17c4392 1022 sfree(f->file_name);
fa1da865 1023 f->file_name = NULL;
7ebd796f
JA
1024 axmap_free(f->io_axmap);
1025 f->io_axmap = NULL;
78d99e6a 1026 sfree(f);
53cdc686 1027 }
b4a6a59a 1028
2dc1bbeb 1029 td->o.filename = NULL;
cade3ef4 1030 free(td->files);
9efef3c4 1031 td->files_index = 0;
b4a6a59a 1032 td->files = NULL;
2dc1bbeb 1033 td->o.nr_files = 0;
53cdc686 1034}
af52b345 1035
e3bab463 1036static void get_file_type(struct fio_file *f)
af52b345
JA
1037{
1038 struct stat sb;
1039
66159828
JA
1040 if (!strcmp(f->file_name, "-"))
1041 f->filetype = FIO_TYPE_PIPE;
1042 else
1043 f->filetype = FIO_TYPE_FILE;
af52b345 1044
3892182a
BC
1045 /* \\.\ is the device namespace in Windows, where every file is
1046 * a block device */
1047 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1048 f->filetype = FIO_TYPE_BD;
1049
b30d395e 1050 if (!stat(f->file_name, &sb)) {
3892182a 1051 if (S_ISBLK(sb.st_mode))
af52b345
JA
1052 f->filetype = FIO_TYPE_BD;
1053 else if (S_ISCHR(sb.st_mode))
1054 f->filetype = FIO_TYPE_CHAR;
b5605e9d
JA
1055 else if (S_ISFIFO(sb.st_mode))
1056 f->filetype = FIO_TYPE_PIPE;
af52b345
JA
1057 }
1058}
1059
f29b25a3 1060int add_file(struct thread_data *td, const char *fname)
af52b345 1061{
7b4e4fe5 1062 int cur_files = td->files_index;
bd0ee748 1063 char file_name[PATH_MAX];
af52b345 1064 struct fio_file *f;
bd0ee748 1065 int len = 0;
af52b345 1066
ee56ad50
JA
1067 dprint(FD_FILE, "add file %s\n", fname);
1068
f17c4392 1069 f = smalloc(sizeof(*f));
c48c0be7
JA
1070 if (!f) {
1071 log_err("fio: smalloc OOM\n");
1072 assert(0);
1073 }
0b9d69ec 1074
af52b345 1075 f->fd = -1;
e6c4d732 1076 f->shadow_fd = -1;
33c48814 1077 fio_file_reset(td, f);
bd0ee748 1078
fc99bc0d 1079 if (td->files_size <= td->files_index) {
1983e327 1080 unsigned int new_size = td->o.nr_files + 1;
126d65c6 1081
fc99bc0d
JA
1082 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1083
1084 td->files = realloc(td->files, new_size * sizeof(f));
d537c08b
JM
1085 if (td->files == NULL) {
1086 log_err("fio: realloc OOM\n");
1087 assert(0);
1088 }
fc99bc0d
JA
1089 td->files_size = new_size;
1090 }
8bb7679e 1091 td->files[cur_files] = f;
89ac1d48 1092 f->fileno = cur_files;
126d65c6 1093
07eb79df
JA
1094 /*
1095 * init function, io engine may not be loaded yet
1096 */
1097 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1098 f->real_file_size = -1ULL;
1099
bd0ee748
JA
1100 if (td->o.directory)
1101 len = sprintf(file_name, "%s/", td->o.directory);
1102
1103 sprintf(file_name + len, "%s", fname);
f17c4392 1104 f->file_name = smalloc_strdup(file_name);
c48c0be7
JA
1105 if (!f->file_name) {
1106 log_err("fio: smalloc OOM\n");
1107 assert(0);
1108 }
0b9d69ec 1109
e3bab463 1110 get_file_type(f);
af52b345 1111
4d4e80f2
JA
1112 switch (td->o.file_lock_mode) {
1113 case FILE_LOCK_NONE:
1114 break;
1115 case FILE_LOCK_READWRITE:
1116 f->lock = fio_mutex_rw_init();
1117 break;
1118 case FILE_LOCK_EXCLUSIVE:
521da527 1119 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
4d4e80f2
JA
1120 break;
1121 default:
1122 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1123 assert(0);
1124 }
29c1349f 1125
7b4e4fe5 1126 td->files_index++;
1549441c
JA
1127 if (f->filetype == FIO_TYPE_FILE)
1128 td->nr_normal_files++;
f29b25a3 1129
5ec10eaa
JA
1130 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1131 cur_files);
9efef3c4 1132
f29b25a3 1133 return cur_files;
af52b345 1134}
0ad920e7 1135
49ffb4a2
JA
1136int add_file_exclusive(struct thread_data *td, const char *fname)
1137{
1138 struct fio_file *f;
1139 unsigned int i;
1140
1141 for_each_file(td, f, i) {
1142 if (!strcmp(f->file_name, fname))
1143 return i;
1144 }
1145
1146 return add_file(td, fname);
1147}
1148
0ad920e7
JA
1149void get_file(struct fio_file *f)
1150{
8172fe97 1151 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
d6aed795 1152 assert(fio_file_open(f));
0ad920e7
JA
1153 f->references++;
1154}
1155
6977bcd0 1156int put_file(struct thread_data *td, struct fio_file *f)
0ad920e7 1157{
98e1ac4e 1158 int f_ret = 0, ret = 0;
6977bcd0 1159
8172fe97 1160 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
ee56ad50 1161
22a57ba8
JA
1162 if (!fio_file_open(f)) {
1163 assert(f->fd == -1);
6977bcd0 1164 return 0;
22a57ba8 1165 }
0ad920e7
JA
1166
1167 assert(f->references);
1168 if (--f->references)
6977bcd0 1169 return 0;
0ad920e7 1170
d424d4dd 1171 if (should_fsync(td) && td->o.fsync_on_close)
98e1ac4e 1172 f_ret = fsync(f->fd);
ebb1415f 1173
0ad920e7 1174 if (td->io_ops->close_file)
6977bcd0 1175 ret = td->io_ops->close_file(td, f);
1020a139 1176
98e1ac4e 1177 if (!ret)
a5fb461f 1178 ret = f_ret;
98e1ac4e 1179
0ad920e7 1180 td->nr_open_files--;
d6aed795 1181 fio_file_clear_open(f);
22a57ba8 1182 assert(f->fd == -1);
6977bcd0 1183 return ret;
0ad920e7 1184}
bbf6b540 1185
4d4e80f2 1186void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
b2bd2bd9 1187{
4d4e80f2
JA
1188 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1189 return;
29c1349f 1190
4d4e80f2
JA
1191 if (f->lock_owner == td && f->lock_batch--)
1192 return;
1193
1194 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1195 if (ddir == DDIR_READ)
1196 fio_mutex_down_read(f->lock);
1197 else
1198 fio_mutex_down_write(f->lock);
1199 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1200 fio_mutex_down(f->lock);
1201
1202 f->lock_owner = td;
1203 f->lock_batch = td->o.lockfile_batch;
1204 f->lock_ddir = ddir;
b2bd2bd9
JA
1205}
1206
4d4e80f2 1207void unlock_file(struct thread_data *td, struct fio_file *f)
b2bd2bd9 1208{
4d4e80f2
JA
1209 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1210 return;
1211 if (f->lock_batch)
1212 return;
1213
1214 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1215 const int is_read = f->lock_ddir == DDIR_READ;
1216 int val = fio_mutex_getval(f->lock);
29c1349f 1217
4d4e80f2
JA
1218 if ((is_read && val == 1) || (!is_read && val == -1))
1219 f->lock_owner = NULL;
29c1349f 1220
4d4e80f2
JA
1221 if (is_read)
1222 fio_mutex_up_read(f->lock);
1223 else
1224 fio_mutex_up_write(f->lock);
1225 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
1226 int val = fio_mutex_getval(f->lock);
1227
1228 if (val == 0)
1229 f->lock_owner = NULL;
1230
1231 fio_mutex_up(f->lock);
29c1349f 1232 }
b2bd2bd9
JA
1233}
1234
4d4e80f2
JA
1235void unlock_file_all(struct thread_data *td, struct fio_file *f)
1236{
1237 if (f->lock_owner != td)
1238 return;
1239
1240 f->lock_batch = 0;
1241 unlock_file(td, f);
1242}
1243
bbf6b540
JA
1244static int recurse_dir(struct thread_data *td, const char *dirname)
1245{
1246 struct dirent *dir;
1247 int ret = 0;
1248 DIR *D;
1249
1250 D = opendir(dirname);
1251 if (!D) {
0ddb270c
JA
1252 char buf[FIO_VERROR_SIZE];
1253
98ffb8f3 1254 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
0ddb270c 1255 td_verror(td, errno, buf);
bbf6b540
JA
1256 return 1;
1257 }
1258
1259 while ((dir = readdir(D)) != NULL) {
1260 char full_path[PATH_MAX];
1261 struct stat sb;
1262
e85b2b83
JA
1263 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1264 continue;
96d32d51 1265
b9fd788f 1266 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
bbf6b540
JA
1267
1268 if (lstat(full_path, &sb) == -1) {
1269 if (errno != ENOENT) {
1270 td_verror(td, errno, "stat");
1271 return 1;
1272 }
1273 }
1274
1275 if (S_ISREG(sb.st_mode)) {
1276 add_file(td, full_path);
2dc1bbeb 1277 td->o.nr_files++;
bbf6b540
JA
1278 continue;
1279 }
0ddb270c
JA
1280 if (!S_ISDIR(sb.st_mode))
1281 continue;
bbf6b540 1282
5ec10eaa
JA
1283 ret = recurse_dir(td, full_path);
1284 if (ret)
bbf6b540
JA
1285 break;
1286 }
1287
1288 closedir(D);
1289 return ret;
1290}
1291
1292int add_dir_files(struct thread_data *td, const char *path)
1293{
0ddb270c
JA
1294 int ret = recurse_dir(td, path);
1295
1296 if (!ret)
1297 log_info("fio: opendir added %d files\n", td->o.nr_files);
1298
1299 return ret;
bbf6b540 1300}
cade3ef4
JA
1301
1302void dup_files(struct thread_data *td, struct thread_data *org)
1303{
1304 struct fio_file *f;
1305 unsigned int i;
9efef3c4
JA
1306
1307 dprint(FD_FILE, "dup files: %d\n", org->files_index);
cade3ef4
JA
1308
1309 if (!org->files)
1310 return;
1311
9efef3c4 1312 td->files = malloc(org->files_index * sizeof(f));
cade3ef4 1313
9efef3c4 1314 for_each_file(org, f, i) {
b0fe421a
JA
1315 struct fio_file *__f;
1316
f17c4392 1317 __f = smalloc(sizeof(*__f));
c48c0be7
JA
1318 if (!__f) {
1319 log_err("fio: smalloc OOM\n");
1320 assert(0);
1321 }
22a57ba8 1322 __f->fd = -1;
33c48814 1323 fio_file_reset(td, __f);
0b9d69ec 1324
bc3456fa 1325 if (f->file_name) {
f17c4392 1326 __f->file_name = smalloc_strdup(f->file_name);
c48c0be7
JA
1327 if (!__f->file_name) {
1328 log_err("fio: smalloc OOM\n");
1329 assert(0);
1330 }
0b9d69ec 1331
bc3456fa
AC
1332 __f->filetype = f->filetype;
1333 }
b0fe421a
JA
1334
1335 td->files[i] = __f;
cade3ef4
JA
1336 }
1337}
f29b25a3
JA
1338
1339/*
1340 * Returns the index that matches the filename, or -1 if not there
1341 */
1342int get_fileno(struct thread_data *td, const char *fname)
1343{
1344 struct fio_file *f;
1345 unsigned int i;
1346
1347 for_each_file(td, f, i)
1348 if (!strcmp(f->file_name, fname))
1349 return i;
1350
1351 return -1;
1352}
1353
1354/*
1355 * For log usage, where we add/open/close files automatically
1356 */
1357void free_release_files(struct thread_data *td)
1358{
1359 close_files(td);
1360 td->files_index = 0;
1361 td->nr_normal_files = 0;
1362}
33c48814
JA
1363
1364void fio_file_reset(struct thread_data *td, struct fio_file *f)
1365{
1366 f->last_pos = f->file_offset;
1367 f->last_start = -1ULL;
1368 if (f->io_axmap)
1369 axmap_reset(f->io_axmap);
1370 if (td->o.random_generator == FIO_RAND_GEN_LFSR)
1371 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1372}