engines/libblkio: Share a single blkio instance among threads in same process
[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 7#include <sys/stat.h>
53cdc686
JA
8
9#include "fio.h"
f17c4392 10#include "smalloc.h"
4906e0b5 11#include "filehash.h"
bcbfeefa 12#include "options.h"
ecc314ba 13#include "os/os.h"
2316296a 14#include "hash.h"
7ebd796f 15#include "lib/axmap.h"
ae626d4e 16#include "rwlock.h"
bfbdd35b 17#include "zbd.h"
53cdc686 18
97ac992c 19#ifdef CONFIG_LINUX_FALLOCATE
a596f047
EG
20#include <linux/falloc.h>
21#endif
22
bcbfeefa
CE
23static FLIST_HEAD(filename_list);
24
bf651609
TK
25/*
26 * List entry for filename_list
27 */
28struct file_name {
29 struct flist_head list;
30 char *filename;
31};
32
c592b9fe
JA
33static inline void clear_error(struct thread_data *td)
34{
35 td->error = 0;
36 td->verror[0] = '\0';
37}
38
c75f74fb 39static int native_fallocate(struct thread_data *td, struct fio_file *f)
2c3e17be
SW
40{
41 bool success;
42
43 success = fio_fallocate(f, 0, f->real_file_size);
44 dprint(FD_FILE, "native fallocate of file %s size %llu was "
45 "%ssuccessful\n", f->file_name,
46 (unsigned long long) f->real_file_size,
47 !success ? "un": "");
48
49 if (success)
c0aabe37 50 return false;
2c3e17be
SW
51
52 if (errno == ENOSYS)
53 dprint(FD_FILE, "native fallocate is not implemented\n");
54
c0aabe37 55 return true;
2c3e17be
SW
56}
57
005eb303
JA
58static void fallocate_file(struct thread_data *td, struct fio_file *f)
59{
005eb303
JA
60 if (td->o.fill_device)
61 return;
62
005eb303 63 switch (td->o.fallocate_mode) {
2c3e17be 64 case FIO_FALLOCATE_NATIVE:
c0aabe37 65 native_fallocate(td, f);
2c3e17be 66 break;
005eb303
JA
67 case FIO_FALLOCATE_NONE:
68 break;
2c3e17be 69#ifdef CONFIG_POSIX_FALLOCATE
52db2dac
JA
70 case FIO_FALLOCATE_POSIX: {
71 int r;
72
005eb303
JA
73 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
74 f->file_name,
75 (unsigned long long) f->real_file_size);
76
77 r = posix_fallocate(f->fd, 0, f->real_file_size);
78 if (r > 0)
79 log_err("fio: posix_fallocate fails: %s\n", strerror(r));
80 break;
52db2dac 81 }
2c3e17be 82#endif /* CONFIG_POSIX_FALLOCATE */
005eb303 83#ifdef CONFIG_LINUX_FALLOCATE
52db2dac
JA
84 case FIO_FALLOCATE_KEEP_SIZE: {
85 int r;
86
005eb303
JA
87 dprint(FD_FILE, "fallocate(FALLOC_FL_KEEP_SIZE) "
88 "file %s size %llu\n", f->file_name,
89 (unsigned long long) f->real_file_size);
90
91 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0, f->real_file_size);
92 if (r != 0)
93 td_verror(td, errno, "fallocate");
94
95 break;
52db2dac 96 }
005eb303 97#endif /* CONFIG_LINUX_FALLOCATE */
38ca5f03
TV
98 case FIO_FALLOCATE_TRUNCATE: {
99 int r;
100
101 dprint(FD_FILE, "ftruncate file %s size %llu\n",
102 f->file_name,
103 (unsigned long long) f->real_file_size);
104 r = ftruncate(f->fd, f->real_file_size);
105 if (r != 0)
106 td_verror(td, errno, "ftruncate");
107
108 break;
109 }
005eb303
JA
110 default:
111 log_err("fio: unknown fallocate mode: %d\n", td->o.fallocate_mode);
112 assert(0);
113 }
005eb303
JA
114}
115
3baddf24
JA
116/*
117 * Leaves f->fd open on success, caller must close
118 */
7bb48f84 119static int extend_file(struct thread_data *td, struct fio_file *f)
25205e97 120{
005eb303 121 int new_layout = 0, unlink_file = 0, flags;
25205e97 122 unsigned long long left;
5fff9543 123 unsigned long long bs;
f3e1eb23 124 char *b = NULL;
b2a15192 125
4241ea8f
JA
126 if (read_only) {
127 log_err("fio: refusing extend of file due to read-only\n");
128 return 0;
129 }
130
507a702f
JA
131 /*
132 * check if we need to lay the file out complete again. fio
133 * does that for operations involving reads, or for writes
134 * where overwrite is set
135 */
1417daeb
JA
136 if (td_read(td) ||
137 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
9b87f09b 138 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
507a702f 139 new_layout = 1;
1417daeb 140 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
ea443657 141 unlink_file = 1;
507a702f 142
6ae1f57f 143 if (unlink_file || new_layout) {
2442c935
JA
144 int ret;
145
d5e3f7cb 146 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
2442c935
JA
147
148 ret = td_io_unlink_file(td, f);
149 if (ret != 0 && ret != ENOENT) {
7bb48f84
JA
150 td_verror(td, errno, "unlink");
151 return 1;
152 }
153 }
154
2378826d
JA
155 flags = O_WRONLY;
156 if (td->o.allow_create)
157 flags |= O_CREAT;
507a702f
JA
158 if (new_layout)
159 flags |= O_TRUNC;
160
9c0f3f32
BC
161#ifdef WIN32
162 flags |= _O_BINARY;
163#endif
164
ee56ad50 165 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
507a702f 166 f->fd = open(f->file_name, flags, 0644);
53cdc686 167 if (f->fd < 0) {
2378826d
JA
168 int err = errno;
169
170 if (err == ENOENT && !td->o.allow_create)
171 log_err("fio: file creation disallowed by "
172 "allow_file_create=0\n");
323876fb 173 else
2378826d 174 td_verror(td, err, "open");
53cdc686
JA
175 return 1;
176 }
177
005eb303 178 fallocate_file(td, f);
9b836561 179
79591fa9
TK
180 /*
181 * If our jobs don't require regular files initially, we're done.
182 */
fc74ac1d
SL
183 if (!new_layout)
184 goto done;
185
5e0074c2
JA
186 /*
187 * The size will be -1ULL when fill_device is used, so don't truncate
188 * or fallocate this file, just write it
189 */
190 if (!td->o.fill_device) {
191 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
4b91ee8f 192 (unsigned long long) f->real_file_size);
5e0074c2 193 if (ftruncate(f->fd, f->real_file_size) == -1) {
3cd4c66f
J
194 if (errno != EFBIG) {
195 td_verror(td, errno, "ftruncate");
196 goto err;
197 }
5e0074c2 198 }
5e0074c2 199 }
40f8298c 200
82d8de31
TK
201 left = f->real_file_size;
202 bs = td->o.max_bs[DDIR_WRITE];
203 if (bs > left)
204 bs = left;
205
323876fb 206 b = malloc(bs);
84af30a1 207 if (!b) {
323876fb 208 td_verror(td, errno, "malloc");
84af30a1
TK
209 goto err;
210 }
53cdc686 211
53cdc686 212 while (left && !td->terminate) {
005eb303
JA
213 ssize_t r;
214
53cdc686
JA
215 if (bs > left)
216 bs = left;
217
cc86c395
JA
218 fill_io_buffer(td, b, bs, bs);
219
53cdc686
JA
220 r = write(f->fd, b, bs);
221
5e0074c2
JA
222 if (r > 0) {
223 left -= r;
53cdc686
JA
224 continue;
225 } else {
5e0074c2
JA
226 if (r < 0) {
227 int __e = errno;
228
418f5399
MB
229 if (__e == ENOSPC || __e == EDQUOT) {
230 const char *__e_name;
5e0074c2
JA
231 if (td->o.fill_device)
232 break;
418f5399
MB
233 if (__e == ENOSPC)
234 __e_name = "ENOSPC";
235 else
236 __e_name = "EDQUOT";
237 log_info("fio: %s on laying out "
238 "file, stopping\n", __e_name);
5e0074c2 239 }
e1161c32 240 td_verror(td, errno, "write");
5e0074c2 241 } else
e1161c32 242 td_verror(td, EIO, "write");
53cdc686 243
9107a641 244 goto err;
53cdc686
JA
245 }
246 }
247
ffdfabd4
JA
248 if (td->terminate) {
249 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
38ef9c90 250 td_io_unlink_file(td, f);
ffdfabd4 251 } else if (td->o.create_fsync) {
98e1ac4e
JA
252 if (fsync(f->fd) < 0) {
253 td_verror(td, errno, "fsync");
254 goto err;
255 }
256 }
0d1cd207 257 if (td->o.fill_device && !td_write(td)) {
d6aed795 258 fio_file_clear_size_known(f);
5e0074c2
JA
259 if (td_io_get_file_size(td, f))
260 goto err;
261 if (f->io_size > f->real_file_size)
262 f->io_size = f->real_file_size;
263 }
53cdc686 264
323876fb 265 free(b);
507a702f 266done:
53cdc686
JA
267 return 0;
268err:
269 close(f->fd);
270 f->fd = -1;
f3e1eb23 271 if (b)
323876fb 272 free(b);
53cdc686
JA
273 return 1;
274}
275
c139f3b4 276static bool pre_read_file(struct thread_data *td, struct fio_file *f)
afad68f7 277{
c139f3b4 278 int r, did_open = 0, old_runstate;
afad68f7 279 unsigned long long left;
5fff9543 280 unsigned long long bs;
c139f3b4 281 bool ret = true;
afad68f7
ZY
282 char *b;
283
736f1188
TK
284 if (td_ioengine_flagged(td, FIO_PIPEIO) ||
285 td_ioengine_flagged(td, FIO_NOIO))
c139f3b4 286 return true;
9c0d2241 287
e658078b 288 if (f->filetype == FIO_TYPE_CHAR)
c139f3b4 289 return true;
e658078b 290
d6aed795 291 if (!fio_file_open(f)) {
b0f65863
JA
292 if (td->io_ops->open_file(td, f)) {
293 log_err("fio: cannot pre-read, failed to open file\n");
c139f3b4 294 return false;
b0f65863
JA
295 }
296 did_open = 1;
297 }
298
8edd973d 299 old_runstate = td_bump_runstate(td, TD_PRE_READING);
b0f65863 300
82d8de31 301 left = f->io_size;
afad68f7 302 bs = td->o.max_bs[DDIR_READ];
82d8de31
TK
303 if (bs > left)
304 bs = left;
305
afad68f7 306 b = malloc(bs);
84af30a1
TK
307 if (!b) {
308 td_verror(td, errno, "malloc");
c139f3b4 309 ret = false;
84af30a1
TK
310 goto error;
311 }
afad68f7
ZY
312 memset(b, 0, bs);
313
ef799a64
JA
314 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
315 td_verror(td, errno, "lseek");
316 log_err("fio: failed to lseek pre-read file\n");
c139f3b4 317 ret = false;
ef799a64
JA
318 goto error;
319 }
320
afad68f7
ZY
321 while (left && !td->terminate) {
322 if (bs > left)
323 bs = left;
324
325 r = read(f->fd, b, bs);
326
327 if (r == (int) bs) {
328 left -= bs;
329 continue;
330 } else {
331 td_verror(td, EIO, "pre_read");
332 break;
333 }
334 }
335
ef799a64 336error:
8edd973d 337 td_restore_runstate(td, old_runstate);
b0f65863
JA
338
339 if (did_open)
340 td->io_ops->close_file(td, f);
ef799a64 341
afad68f7 342 free(b);
ef799a64 343 return ret;
afad68f7
ZY
344}
345
8c47cc76
ŁS
346/*
347 * Generic function to prepopulate regular file with data.
348 * Useful if you want to make sure I/O engine has data to read.
349 * Leaves f->fd open on success, caller must close.
350 */
351int generic_prepopulate_file(struct thread_data *td, struct fio_file *f)
352{
353 int flags;
354 unsigned long long left, bs;
355 char *b = NULL;
356
357 /* generic function for regular files only */
358 assert(f->filetype == FIO_TYPE_FILE);
359
360 if (read_only) {
361 log_err("fio: refusing to write a file due to read-only\n");
362 return 0;
363 }
364
365 flags = O_WRONLY;
366 if (td->o.allow_create)
367 flags |= O_CREAT;
368
369#ifdef WIN32
370 flags |= _O_BINARY;
371#endif
372
373 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
374 f->fd = open(f->file_name, flags, 0644);
375 if (f->fd < 0) {
376 int err = errno;
377
378 if (err == ENOENT && !td->o.allow_create)
379 log_err("fio: file creation disallowed by "
380 "allow_file_create=0\n");
381 else
382 td_verror(td, err, "open");
383 return 1;
384 }
385
386 left = f->real_file_size;
387 bs = td->o.max_bs[DDIR_WRITE];
388 if (bs > left)
389 bs = left;
390
391 b = malloc(bs);
392 if (!b) {
393 td_verror(td, errno, "malloc");
394 goto err;
395 }
396
397 while (left && !td->terminate) {
398 ssize_t r;
399
400 if (bs > left)
401 bs = left;
402
403 fill_io_buffer(td, b, bs, bs);
404
405 r = write(f->fd, b, bs);
406
407 if (r > 0) {
408 left -= r;
409 } else {
410 td_verror(td, errno, "write");
411 goto err;
412 }
413 }
414
415 if (td->terminate) {
416 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
417 td_io_unlink_file(td, f);
418 } else if (td->o.create_fsync) {
419 if (fsync(f->fd) < 0) {
420 td_verror(td, errno, "fsync");
421 goto err;
422 }
423 }
424
425 free(b);
426 return 0;
427err:
428 close(f->fd);
429 f->fd = -1;
430 if (b)
431 free(b);
432 return 1;
433}
434
a3f001f5 435unsigned long long get_rand_file_size(struct thread_data *td)
9c60ce64 436{
dc873b6f 437 unsigned long long ret, sized;
c3546b53 438 uint64_t frand_max;
ed06087e 439 uint64_t r;
9c60ce64 440
c3546b53 441 frand_max = rand_max(&td->file_size_state);
d6b72507 442 r = __rand(&td->file_size_state);
54a21917 443 sized = td->o.file_size_high - td->o.file_size_low;
c3546b53 444 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
5ec10eaa 445 ret += td->o.file_size_low;
2dc1bbeb 446 ret -= (ret % td->o.rw_min_bs);
9c60ce64
JA
447 return ret;
448}
449
53cdc686
JA
450static int file_size(struct thread_data *td, struct fio_file *f)
451{
452 struct stat st;
453
df9c26b1 454 if (stat(f->file_name, &st) == -1) {
7bb48f84
JA
455 td_verror(td, errno, "fstat");
456 return 1;
457 }
53cdc686 458
7bb48f84 459 f->real_file_size = st.st_size;
53cdc686
JA
460 return 0;
461}
462
463static int bdev_size(struct thread_data *td, struct fio_file *f)
464{
9b836561 465 unsigned long long bytes = 0;
53cdc686
JA
466 int r;
467
df9c26b1
JA
468 if (td->io_ops->open_file(td, f)) {
469 log_err("fio: failed opening blockdev %s for size check\n",
470 f->file_name);
471 return 1;
472 }
473
ecc314ba 474 r = blockdev_size(f, &bytes);
53cdc686 475 if (r) {
e1161c32 476 td_verror(td, r, "blockdev_size");
df9c26b1 477 goto err;
53cdc686
JA
478 }
479
7ab077ab
JA
480 if (!bytes) {
481 log_err("%s: zero sized block device?\n", f->file_name);
df9c26b1 482 goto err;
7ab077ab
JA
483 }
484
53cdc686 485 f->real_file_size = bytes;
22a57ba8 486 td->io_ops->close_file(td, f);
53cdc686 487 return 0;
df9c26b1
JA
488err:
489 td->io_ops->close_file(td, f);
490 return 1;
53cdc686
JA
491}
492
4ccdccd1
JA
493static int char_size(struct thread_data *td, struct fio_file *f)
494{
495#ifdef FIO_HAVE_CHARDEV_SIZE
9b836561 496 unsigned long long bytes = 0;
4ccdccd1
JA
497 int r;
498
499 if (td->io_ops->open_file(td, f)) {
b3ec877c 500 log_err("fio: failed opening chardev %s for size check\n",
4ccdccd1
JA
501 f->file_name);
502 return 1;
503 }
504
ecc314ba 505 r = chardev_size(f, &bytes);
4ccdccd1
JA
506 if (r) {
507 td_verror(td, r, "chardev_size");
508 goto err;
509 }
510
511 if (!bytes) {
512 log_err("%s: zero sized char device?\n", f->file_name);
513 goto err;
514 }
515
516 f->real_file_size = bytes;
517 td->io_ops->close_file(td, f);
518 return 0;
519err:
520 td->io_ops->close_file(td, f);
521 return 1;
522#else
523 f->real_file_size = -1ULL;
524 return 0;
525#endif
526}
527
53cdc686
JA
528static int get_file_size(struct thread_data *td, struct fio_file *f)
529{
530 int ret = 0;
531
d6aed795 532 if (fio_file_size_known(f))
409b3417
JA
533 return 0;
534
7bb48f84
JA
535 if (f->filetype == FIO_TYPE_FILE)
536 ret = file_size(td, f);
686fbd31 537 else if (f->filetype == FIO_TYPE_BLOCK)
53cdc686 538 ret = bdev_size(td, f);
4ccdccd1
JA
539 else if (f->filetype == FIO_TYPE_CHAR)
540 ret = char_size(td, f);
8bd809f5
TK
541 else {
542 f->real_file_size = -1;
543 log_info("%s: failed to get file size of %s\n", td->o.name,
544 f->file_name);
545 return 1; /* avoid offset extends end error message */
546 }
53cdc686 547
79591fa9
TK
548 /*
549 * Leave ->real_file_size with 0 since it could be expectation
550 * of initial setup for regular files.
551 */
a0cb220b 552 if (ret)
53cdc686
JA
553 return ret;
554
957c81b9
TK
555 /*
556 * ->file_offset normally hasn't been initialized yet, so this
8bd809f5
TK
557 * is basically always false unless ->real_file_size is -1, but
558 * if ->real_file_size is -1 this message doesn't make sense.
559 * As a result, this message is basically useless.
957c81b9 560 */
53cdc686 561 if (f->file_offset > f->real_file_size) {
0f2152c1 562 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
4e0a8fa2
JA
563 (unsigned long long) f->file_offset,
564 (unsigned long long) f->real_file_size);
53cdc686
JA
565 return 1;
566 }
567
d6aed795 568 fio_file_set_size_known(f);
53cdc686
JA
569 return 0;
570}
571
3baddf24
JA
572static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
573 unsigned long long off,
574 unsigned long long len)
e5b401d4 575{
942a851a 576 int errval = 0, ret = 0;
e5b401d4 577
c8931876
JA
578#ifdef CONFIG_ESX
579 return 0;
580#endif
581
5e0074c2 582 if (len == -1ULL)
3baddf24
JA
583 len = f->io_size;
584 if (off == -1ULL)
585 off = f->file_offset;
ee56ad50 586
0d1cd207
JA
587 if (len == -1ULL || off == -1ULL)
588 return 0;
589
942a851a 590 if (td->io_ops->invalidate) {
4499dbef
TK
591 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
592 f->file_name);
d9b100fc 593 ret = td->io_ops->invalidate(td, f);
942a851a 594 if (ret < 0)
afd118db 595 errval = -ret;
4e18b4d9
SW
596 } else if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
597 dprint(FD_IO, "invalidate not supported by ioengine %s\n",
598 td->io_ops->name);
942a851a 599 } else if (f->filetype == FIO_TYPE_FILE) {
4499dbef
TK
600 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
601 f->file_name, off, len);
ecc314ba 602 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
0b139881 603 if (ret)
942a851a 604 errval = ret;
686fbd31 605 } else if (f->filetype == FIO_TYPE_BLOCK) {
2b9f9141
KR
606 int retry_count = 0;
607
4499dbef 608 dprint(FD_IO, "drop page cache %s\n", f->file_name);
ecc314ba 609 ret = blockdev_invalidate_cache(f);
2b9f9141
KR
610 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
611 /*
612 * Linux multipath devices reject ioctl while
613 * the maps are being updated. That window can
614 * last tens of milliseconds; we'll try up to
615 * a quarter of a second.
616 */
617 usleep(10000);
618 ret = blockdev_invalidate_cache(f);
619 }
7e0e25c9 620 if (ret < 0 && errno == EACCES && geteuid()) {
5bdc4522 621 if (!fio_did_warn(FIO_WARN_ROOT_FLUSH)) {
5ec10eaa
JA
622 log_err("fio: only root may flush block "
623 "devices. Cache flush bypassed!\n");
7172cfe8 624 }
7e0e25c9 625 }
942a851a
JA
626 if (ret < 0)
627 errval = errno;
4499dbef
TK
628 } else if (f->filetype == FIO_TYPE_CHAR ||
629 f->filetype == FIO_TYPE_PIPE) {
630 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
4499dbef 631 }
e5b401d4 632
dfe11fd1
JA
633 /*
634 * Cache flushing isn't a fatal condition, and we know it will
635 * happen on some platforms where we don't have the proper
636 * function to flush eg block device caches. So just warn and
637 * continue on our way.
638 */
942a851a 639 if (errval)
22de5d77
TK
640 log_info("fio: cache invalidation of %s failed: %s\n",
641 f->file_name, strerror(errval));
e5b401d4 642
dfe11fd1 643 return 0;
3baddf24
JA
644
645}
646
647int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
648{
d6aed795 649 if (!fio_file_open(f))
a5fb461f
JA
650 return 0;
651
5e0074c2 652 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
e5b401d4
JA
653}
654
6977bcd0 655int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
53cdc686 656{
6977bcd0
JA
657 int ret = 0;
658
ee56ad50 659 dprint(FD_FILE, "fd close %s\n", f->file_name);
4906e0b5
JA
660
661 remove_file_hash(f);
662
6977bcd0
JA
663 if (close(f->fd) < 0)
664 ret = errno;
665
b5af8293 666 f->fd = -1;
e6c4d732
JA
667
668 if (f->shadow_fd != -1) {
669 close(f->shadow_fd);
670 f->shadow_fd = -1;
671 }
672
710bf9c5 673 f->engine_pos = 0;
6977bcd0 674 return ret;
53cdc686
JA
675}
676
1ccc6dc7 677int file_lookup_open(struct fio_file *f, int flags)
53cdc686 678{
29c1349f 679 struct fio_file *__f;
4d4e80f2
JA
680 int from_hash;
681
682 __f = lookup_file_hash(f->file_name);
683 if (__f) {
9efef3c4 684 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
4d4e80f2 685 f->lock = __f->lock;
4d4e80f2
JA
686 from_hash = 1;
687 } else {
9efef3c4 688 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
4d4e80f2
JA
689 from_hash = 0;
690 }
691
9c0f3f32
BC
692#ifdef WIN32
693 flags |= _O_BINARY;
694#endif
695
e8670ef8 696 f->fd = open(f->file_name, flags, 0600);
4d4e80f2
JA
697 return from_hash;
698}
699
e6c4d732
JA
700static int file_close_shadow_fds(struct thread_data *td)
701{
702 struct fio_file *f;
703 int num_closed = 0;
704 unsigned int i;
705
706 for_each_file(td, f, i) {
707 if (f->shadow_fd == -1)
708 continue;
709
710 close(f->shadow_fd);
711 f->shadow_fd = -1;
712 num_closed++;
713 }
714
715 return num_closed;
716}
717
4d4e80f2
JA
718int generic_open_file(struct thread_data *td, struct fio_file *f)
719{
66159828 720 int is_std = 0;
53cdc686 721 int flags = 0;
29c1349f 722 int from_hash = 0;
53cdc686 723
ee56ad50
JA
724 dprint(FD_FILE, "fd open %s\n", f->file_name);
725
66159828
JA
726 if (!strcmp(f->file_name, "-")) {
727 if (td_rw(td)) {
728 log_err("fio: can't read/write to stdin/out\n");
729 return 1;
730 }
731 is_std = 1;
ce98fa66
JA
732
733 /*
734 * move output logging to stderr, if we are writing to stdout
735 */
736 if (td_write(td))
737 f_out = stderr;
66159828
JA
738 }
739
6eaf09d6
SL
740 if (td_trim(td))
741 goto skip_flags;
2dc1bbeb 742 if (td->o.odirect)
2fd233b7 743 flags |= OS_O_DIRECT;
d01612f3
CM
744 if (td->o.oatomic) {
745 if (!FIO_O_ATOMIC) {
746 td_verror(td, EINVAL, "OS does not support atomic IO");
747 return 1;
748 }
749 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
750 }
eb9f8d7f 751 flags |= td->o.sync_io;
2378826d 752 if (td->o.create_on_open && td->o.allow_create)
814452bd 753 flags |= O_CREAT;
6eaf09d6
SL
754skip_flags:
755 if (f->filetype != FIO_TYPE_FILE)
756 flags |= FIO_O_NOATIME;
53cdc686 757
056f3459 758open_again:
660a1cb5 759 if (td_write(td)) {
17308158
JA
760 if (!read_only)
761 flags |= O_RDWR;
53cdc686 762
2378826d 763 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
2fd233b7 764 flags |= O_CREAT;
2fd233b7 765
66159828
JA
766 if (is_std)
767 f->fd = dup(STDOUT_FILENO);
4d4e80f2
JA
768 else
769 from_hash = file_lookup_open(f, flags);
6eaf09d6 770 } else if (td_read(td)) {
4241ea8f 771 if (f->filetype == FIO_TYPE_CHAR && !read_only)
2fd233b7
JA
772 flags |= O_RDWR;
773 else
774 flags |= O_RDONLY;
775
66159828
JA
776 if (is_std)
777 f->fd = dup(STDIN_FILENO);
4d4e80f2
JA
778 else
779 from_hash = file_lookup_open(f, flags);
49cff020
TK
780 } else if (td_trim(td)) {
781 assert(!td_rw(td)); /* should have matched above */
11ff4c37
VF
782 if (!read_only)
783 flags |= O_RDWR;
6eaf09d6 784 from_hash = file_lookup_open(f, flags);
53cdc686
JA
785 }
786
787 if (f->fd == -1) {
e4e33258 788 char buf[FIO_VERROR_SIZE];
e1161c32
JA
789 int __e = errno;
790
835d9b9e 791 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
5921e80c 792 flags &= ~FIO_O_NOATIME;
056f3459
AC
793 goto open_again;
794 }
e6c4d732
JA
795 if (__e == EMFILE && file_close_shadow_fds(td))
796 goto open_again;
056f3459 797
98ffb8f3 798 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
e4e33258 799
a93c5f04
JA
800 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
801 log_err("fio: looks like your file system does not " \
802 "support direct=1/buffered=0\n");
803 }
804
e4e33258 805 td_verror(td, __e, buf);
3ce3ad33 806 return 1;
53cdc686
JA
807 }
808
29c1349f
JA
809 if (!from_hash && f->fd != -1) {
810 if (add_file_hash(f)) {
3f0ca9b9 811 int fio_unused ret;
29c1349f
JA
812
813 /*
e6c4d732
JA
814 * Stash away descriptor for later close. This is to
815 * work-around a "feature" on Linux, where a close of
816 * an fd that has been opened for write will trigger
817 * udev to call blkid to check partitions, fs id, etc.
de8f6de9 818 * That pollutes the device cache, which can slow down
e6c4d732 819 * unbuffered accesses.
29c1349f 820 */
e6c4d732
JA
821 if (f->shadow_fd == -1)
822 f->shadow_fd = f->fd;
823 else {
824 /*
825 * OK to ignore, we haven't done anything
826 * with it
827 */
828 ret = generic_close_file(td, f);
829 }
29c1349f
JA
830 goto open_again;
831 }
832 }
4906e0b5 833
53cdc686 834 return 0;
b5af8293
JA
835}
836
79591fa9
TK
837/*
838 * This function i.e. get_file_size() is the default .get_file_size
839 * implementation of majority of I/O engines.
840 */
df9c26b1 841int generic_get_file_size(struct thread_data *td, struct fio_file *f)
21972cde 842{
df9c26b1 843 return get_file_size(td, f);
21972cde
JA
844}
845
7bb48f84
JA
846/*
847 * open/close all files, so that ->real_file_size gets set
848 */
bab3fd58 849static int get_file_sizes(struct thread_data *td)
7bb48f84
JA
850{
851 struct fio_file *f;
852 unsigned int i;
bab3fd58 853 int err = 0;
7bb48f84
JA
854
855 for_each_file(td, f, i) {
08c44a55 856 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
5ec10eaa 857 f->file_name);
9efef3c4 858
99a47c69 859 if (td_io_get_file_size(td, f)) {
40b44f4a
JA
860 if (td->error != ENOENT) {
861 log_err("%s\n", td->verror);
862 err = 1;
3ce3ad33 863 break;
40b44f4a 864 }
541d66d7 865 clear_error(td);
07eb79df 866 }
409b3417 867
79591fa9
TK
868 /*
869 * There are corner cases where we end up with -1 for
870 * ->real_file_size due to unsupported file type, etc.
871 * We then just set to size option value divided by number
872 * of files, similar to the way file ->io_size is set.
873 * stat(2) failure doesn't set ->real_file_size to -1.
874 */
409b3417
JA
875 if (f->real_file_size == -1ULL && td->o.size)
876 f->real_file_size = td->o.size / td->o.nr_files;
7bb48f84 877 }
bab3fd58
JA
878
879 return err;
7bb48f84
JA
880}
881
2e3bd4c2
JA
882struct fio_mount {
883 struct flist_head list;
884 const char *base;
885 char __base[256];
886 unsigned int key;
887};
888
889/*
890 * Get free number of bytes for each file on each unique mount.
891 */
892static unsigned long long get_fs_free_counts(struct thread_data *td)
893{
894 struct flist_head *n, *tmp;
68b0316f 895 unsigned long long ret = 0;
2e3bd4c2
JA
896 struct fio_mount *fm;
897 FLIST_HEAD(list);
898 struct fio_file *f;
899 unsigned int i;
900
901 for_each_file(td, f, i) {
902 struct stat sb;
903 char buf[256];
904
686fbd31 905 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
4ccdccd1
JA
906 if (f->real_file_size != -1ULL)
907 ret += f->real_file_size;
68b0316f
JA
908 continue;
909 } else if (f->filetype != FIO_TYPE_FILE)
910 continue;
911
59f94d26 912 snprintf(buf, FIO_ARRAY_SIZE(buf), "%s", f->file_name);
2e3bd4c2
JA
913
914 if (stat(buf, &sb) < 0) {
915 if (errno != ENOENT)
916 break;
917 strcpy(buf, ".");
918 if (stat(buf, &sb) < 0)
919 break;
920 }
921
922 fm = NULL;
923 flist_for_each(n, &list) {
924 fm = flist_entry(n, struct fio_mount, list);
925 if (fm->key == sb.st_dev)
926 break;
927
928 fm = NULL;
929 }
930
931 if (fm)
932 continue;
933
3660ceae 934 fm = calloc(1, sizeof(*fm));
59f94d26 935 snprintf(fm->__base, FIO_ARRAY_SIZE(fm->__base), "%s", buf);
2e3bd4c2
JA
936 fm->base = basename(fm->__base);
937 fm->key = sb.st_dev;
938 flist_add(&fm->list, &list);
939 }
940
2e3bd4c2
JA
941 flist_for_each_safe(n, tmp, &list) {
942 unsigned long long sz;
943
944 fm = flist_entry(n, struct fio_mount, list);
945 flist_del(&fm->list);
946
c08ad04c 947 sz = get_fs_free_size(fm->base);
2e3bd4c2
JA
948 if (sz && sz != -1ULL)
949 ret += sz;
950
951 free(fm);
952 }
953
954 return ret;
955}
956
bedc9dc2 957uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
ce95d651 958{
0b288ba1 959 bool align = false;
bedc9dc2 960 struct thread_options *o = &td->o;
872e0415
JA
961 unsigned long long align_bs;
962 unsigned long long offset;
0b288ba1 963 unsigned long long increment;
bedc9dc2
JA
964
965 if (o->file_append && f->filetype == FIO_TYPE_FILE)
966 return f->real_file_size;
967
0b288ba1
VF
968 if (o->offset_increment_percent) {
969 assert(!o->offset_increment);
970 increment = o->offset_increment_percent * f->real_file_size / 100;
971 align = true;
972 } else
973 increment = o->offset_increment;
974
89978a6b 975 if (o->start_offset_percent > 0) {
0b288ba1
VF
976 /* calculate the raw offset */
977 offset = (f->real_file_size * o->start_offset_percent / 100) +
978 (td->subjob_number * increment);
979
980 align = true;
981 } else {
982 /* start_offset_percent not set */
983 offset = o->start_offset +
984 td->subjob_number * increment;
985 }
986
987 if (align) {
872e0415 988 /*
0b288ba1 989 * if offset_align is provided, use it
872e0415 990 */
83c8b093
JF
991 if (fio_option_is_set(o, start_offset_align)) {
992 align_bs = o->start_offset_align;
872e0415
JA
993 } else {
994 /* else take the minimum block size */
89978a6b
BW
995 align_bs = td_min_bs(td);
996 }
997
872e0415
JA
998 /*
999 * block align the offset at the next available boundary at
1000 * ceiling(offset / align_bs) * align_bs
1001 */
89978a6b 1002 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
89978a6b 1003 }
872e0415 1004
89978a6b 1005 return offset;
ce95d651
DE
1006}
1007
7273058c
SW
1008/*
1009 * Find longest path component that exists and return its length
1010 */
1011int longest_existing_path(char *path) {
1012 char buf[PATH_MAX];
1013 bool done;
1014 char *buf_pos;
1015 int offset;
1016#ifdef WIN32
1017 DWORD dwAttr;
1018#else
1019 struct stat sb;
1020#endif
1021
1022 sprintf(buf, "%s", path);
1023 done = false;
1024 while (!done) {
1025 buf_pos = strrchr(buf, FIO_OS_PATH_SEPARATOR);
1026 if (!buf_pos) {
7273058c
SW
1027 offset = 0;
1028 break;
1029 }
1030
1031 *(buf_pos + 1) = '\0';
1032
1033#ifdef WIN32
1034 dwAttr = GetFileAttributesA(buf);
1035 if (dwAttr != INVALID_FILE_ATTRIBUTES) {
1036 done = true;
1037 }
1038#else
1039 if (stat(buf, &sb) == 0)
1040 done = true;
1041#endif
1042 if (done)
1043 offset = buf_pos - buf;
1044 else
1045 *buf_pos = '\0';
1046 }
1047
1048 return offset;
1049}
1050
95af8dd5
KZ
1051static bool create_work_dirs(struct thread_data *td, const char *fname)
1052{
1053 char path[PATH_MAX];
1054 char *start, *end;
7273058c 1055 int offset;
95af8dd5 1056
df18600f
SW
1057 snprintf(path, PATH_MAX, "%s", fname);
1058 start = path;
95af8dd5 1059
7273058c
SW
1060 offset = longest_existing_path(path);
1061 end = start + offset;
95af8dd5 1062 while ((end = strchr(end, FIO_OS_PATH_SEPARATOR)) != NULL) {
df18600f
SW
1063 if (end == start) {
1064 end++;
1065 continue;
1066 }
95af8dd5
KZ
1067 *end = '\0';
1068 errno = 0;
df18600f 1069 if (fio_mkdir(path, 0700) && errno != EEXIST) {
7273058c
SW
1070 log_err("fio: failed to create dir (%s): %s\n",
1071 start, strerror(errno));
95af8dd5
KZ
1072 return false;
1073 }
1074 *end = FIO_OS_PATH_SEPARATOR;
1075 end++;
1076 }
1077 td->flags |= TD_F_DIRS_CREATED;
1078 return true;
1079}
1080
7bb48f84
JA
1081/*
1082 * Open the files and setup files sizes, creating files if necessary.
1083 */
53cdc686
JA
1084int setup_files(struct thread_data *td)
1085{
7bb48f84 1086 unsigned long long total_size, extend_size;
de98bd30 1087 struct thread_options *o = &td->o;
53cdc686 1088 struct fio_file *f;
002fe734 1089 unsigned int i, nr_fs_extra = 0;
000b0803 1090 int err = 0, need_extend;
e90391eb 1091 int old_state;
5fff9543 1092 const unsigned long long bs = td_min_bs(td);
002fe734 1093 uint64_t fs = 0;
53cdc686 1094
d5e3f7cb 1095 dprint(FD_FILE, "setup files\n");
ee56ad50 1096
8edd973d 1097 old_state = td_bump_runstate(td, TD_SETTING_UP);
e90391eb 1098
95af8dd5
KZ
1099 for_each_file(td, f, i) {
1100 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1101 strchr(f->file_name, FIO_OS_PATH_SEPARATOR) &&
1102 !(td->flags & TD_F_DIRS_CREATED) &&
1103 !create_work_dirs(td, f->file_name))
1104 goto err_out;
1105 }
1106
53cdc686 1107 /*
79591fa9
TK
1108 * Find out physical size of files or devices for this thread,
1109 * before we determine I/O size and range of our targets.
1110 * If ioengine defines a setup() method, it's responsible for
7bb48f84
JA
1111 * opening the files and setting f->real_file_size to indicate
1112 * the valid range for that file.
53cdc686
JA
1113 */
1114 if (td->io_ops->setup)
7bb48f84
JA
1115 err = td->io_ops->setup(td);
1116 else
bab3fd58 1117 err = get_file_sizes(td);
53cdc686 1118
f1027063 1119 if (err)
e90391eb 1120 goto err_out;
f1027063 1121
8f39afa7
AD
1122 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1123 err = zbd_init_files(td);
1124 if (err)
1125 goto err_out;
1126 }
1127 zbd_recalc_options_with_zone_granularity(td);
1128
fd1d8e0a
NC
1129 if (o->read_iolog_file)
1130 goto done;
1131
0a7eb121 1132 /*
7bb48f84
JA
1133 * check sizes. if the files/devices do not exist and the size
1134 * isn't passed to fio, abort.
0a7eb121 1135 */
7bb48f84
JA
1136 total_size = 0;
1137 for_each_file(td, f, i) {
49a416bd 1138 f->fileno = i;
7bb48f84
JA
1139 if (f->real_file_size == -1ULL)
1140 total_size = -1ULL;
1141 else
1142 total_size += f->real_file_size;
1143 }
0a7eb121 1144
de98bd30 1145 if (o->fill_device)
2e3bd4c2
JA
1146 td->fill_device_size = get_fs_free_counts(td);
1147
7bb48f84
JA
1148 /*
1149 * device/file sizes are zero and no size given, punt
1150 */
de98bd30 1151 if ((!total_size || total_size == -1ULL) && !o->size &&
9b87f09b 1152 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
de98bd30
JA
1153 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
1154 log_err("%s: you need to specify size=\n", o->name);
e1161c32 1155 td_verror(td, EINVAL, "total_file_size");
e90391eb 1156 goto err_out;
53cdc686
JA
1157 }
1158
002fe734
JA
1159 /*
1160 * Calculate per-file size and potential extra size for the
79591fa9 1161 * first files, if needed (i.e. if we don't have a fixed size).
002fe734 1162 */
d1e78e6b 1163 if (!o->file_size_low && o->nr_files) {
002fe734
JA
1164 uint64_t all_fs;
1165
1166 fs = o->size / o->nr_files;
1167 all_fs = fs * o->nr_files;
1168
1169 if (all_fs < o->size)
1170 nr_fs_extra = (o->size - all_fs) / bs;
1171 }
1172
7bb48f84
JA
1173 /*
1174 * now file sizes are known, so we can set ->io_size. if size= is
1175 * not given, ->io_size is just equal to ->real_file_size. if size
1176 * is given, ->io_size is size / nr_files.
1177 */
1178 extend_size = total_size = 0;
1179 need_extend = 0;
1180 for_each_file(td, f, i) {
bedc9dc2 1181 f->file_offset = get_start_offset(td, f);
bcdedd0a 1182
79591fa9
TK
1183 /*
1184 * Update ->io_size depending on options specified.
1185 * ->file_size_low being 0 means filesize option isn't set.
1186 * Non zero ->file_size_low equals ->file_size_high means
1187 * filesize option is set in a fixed size format.
1188 * Non zero ->file_size_low not equals ->file_size_high means
1189 * filesize option is set in a range format.
1190 */
de98bd30 1191 if (!o->file_size_low) {
7bb48f84 1192 /*
79591fa9 1193 * no file size or range given, file size is equal to
c4aa2d08 1194 * total size divided by number of files. If the size
002fe734
JA
1195 * doesn't divide nicely with the min blocksize,
1196 * make the first files bigger.
7bb48f84 1197 */
0d060147 1198 f->io_size = fs;
002fe734
JA
1199 if (nr_fs_extra) {
1200 nr_fs_extra--;
1201 f->io_size += bs;
1202 }
1203
c4aa2d08 1204 /*
c6dfd837
TK
1205 * We normally don't come here for regular files, but
1206 * if the result is 0 for a regular file, set it to the
1207 * real file size. This could be size of the existing
1208 * one if it already exists, but otherwise will be set
1209 * to 0. A new file won't be created because
c4aa2d08
TK
1210 * ->io_size + ->file_offset equals ->real_file_size.
1211 */
1212 if (!f->io_size) {
1213 if (f->file_offset > f->real_file_size)
1214 goto err_offset;
273f8c91 1215 f->io_size = f->real_file_size - f->file_offset;
c4aa2d08
TK
1216 if (!f->io_size)
1217 log_info("fio: file %s may be ignored\n",
1218 f->file_name);
1219 }
de98bd30
JA
1220 } else if (f->real_file_size < o->file_size_low ||
1221 f->real_file_size > o->file_size_high) {
1222 if (f->file_offset > o->file_size_low)
bcdedd0a 1223 goto err_offset;
7bb48f84
JA
1224 /*
1225 * file size given. if it's fixed, use that. if it's a
1226 * range, generate a random size in-between.
1227 */
de98bd30
JA
1228 if (o->file_size_low == o->file_size_high)
1229 f->io_size = o->file_size_low - f->file_offset;
1230 else {
5ec10eaa
JA
1231 f->io_size = get_rand_file_size(td)
1232 - f->file_offset;
1233 }
65bdb10a 1234 } else
bcdedd0a 1235 f->io_size = f->real_file_size - f->file_offset;
53cdc686 1236
7bb48f84
JA
1237 if (f->io_size == -1ULL)
1238 total_size = -1ULL;
4d002569 1239 else {
8b38f401
AD
1240 uint64_t io_size;
1241
408874da 1242 if (o->size_percent && o->size_percent != 100) {
76e4bb4f
SW
1243 uint64_t file_size;
1244
1245 file_size = f->io_size + f->file_offset;
1246 f->io_size = (file_size *
1247 o->size_percent) / 100;
1248 if (f->io_size > (file_size - f->file_offset))
1249 f->io_size = file_size - f->file_offset;
1250
e391c704
JA
1251 f->io_size -= (f->io_size % td_min_bs(td));
1252 }
8b38f401
AD
1253
1254 io_size = f->io_size;
1255 if (o->io_size_percent && o->io_size_percent != 100) {
1256 io_size *= o->io_size_percent;
1257 io_size /= 100;
1258 }
1259
1260 total_size += io_size;
4d002569 1261 }
7bb48f84
JA
1262
1263 if (f->filetype == FIO_TYPE_FILE &&
3c029ac4
SK
1264 (f->io_size + f->file_offset) > f->real_file_size) {
1265 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1266 !o->create_on_open) {
5fd31680 1267 need_extend++;
814452bd 1268 extend_size += (f->io_size + f->file_offset);
43558406 1269 fio_file_set_extend(f);
3c029ac4
SK
1270 } else if (!td_ioengine_flagged(td, FIO_DISKLESSIO) ||
1271 (td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1272 td_ioengine_flagged(td, FIO_FAKEIO)))
814452bd 1273 f->real_file_size = f->io_size + f->file_offset;
5ec10eaa 1274 }
7bb48f84 1275 }
53cdc686 1276
66347cfa
DE
1277 if (td->o.block_error_hist) {
1278 int len;
1279
1280 assert(td->o.nr_files == 1); /* checked in fixup_options */
1281 f = td->files[0];
1282 len = f->io_size / td->o.bs[DDIR_TRIM];
1283 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1284 log_err("fio: cannot calculate block histogram with "
1285 "%d trim blocks, maximum %d\n",
1286 len, MAX_NR_BLOCK_INFOS);
1287 td_verror(td, EINVAL, "block_error_hist");
1288 goto err_out;
1289 }
1290
1291 td->ts.nr_block_infos = len;
8a68c41c 1292 for (i = 0; i < len; i++)
66347cfa
DE
1293 td->ts.block_infos[i] =
1294 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1295 } else
1296 td->ts.nr_block_infos = 0;
1297
0bc27b0b 1298 if (!o->size || (total_size && o->size > total_size))
de98bd30 1299 o->size = total_size;
21972cde 1300
d1faa06d 1301 if (o->size < td_min_bs(td)) {
6c3c11e5 1302 log_err("fio: blocksize is larger than data set range\n");
d1faa06d
JA
1303 goto err_out;
1304 }
1305
7bb48f84 1306 /*
79591fa9
TK
1307 * See if we need to extend some files, typically needed when our
1308 * target regular files don't exist yet, but our jobs require them
1309 * initially due to read I/Os.
7bb48f84
JA
1310 */
1311 if (need_extend) {
1312 temp_stall_ts = 1;
7c5f4cdb
TK
1313 if (output_format & FIO_OUTPUT_NORMAL) {
1314 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1315 o->name,
1316 need_extend > 1 ? "s" : "",
1317 need_extend,
1318 need_extend > 1 ? "s" : "",
1319 need_extend > 1 ? "total " : "",
1320 extend_size >> 20);
1321 }
7bb48f84
JA
1322
1323 for_each_file(td, f, i) {
5e0074c2 1324 unsigned long long old_len = -1ULL, extend_len = -1ULL;
3baddf24 1325
d6aed795 1326 if (!fio_file_extend(f))
7bb48f84
JA
1327 continue;
1328
409b3417 1329 assert(f->filetype == FIO_TYPE_FILE);
d6aed795 1330 fio_file_clear_extend(f);
de98bd30 1331 if (!o->fill_device) {
5e0074c2 1332 old_len = f->real_file_size;
0b9d69ec
JA
1333 extend_len = f->io_size + f->file_offset -
1334 old_len;
5e0074c2 1335 }
bcdedd0a 1336 f->real_file_size = (f->io_size + f->file_offset);
7bb48f84
JA
1337 err = extend_file(td, f);
1338 if (err)
3baddf24 1339 break;
5e0074c2 1340
3baddf24
JA
1341 err = __file_invalidate_cache(td, f, old_len,
1342 extend_len);
9824f73b
JA
1343
1344 /*
1345 * Shut up static checker
1346 */
1347 if (f->fd != -1)
1348 close(f->fd);
1349
3baddf24
JA
1350 f->fd = -1;
1351 if (err)
7bb48f84
JA
1352 break;
1353 }
1354 temp_stall_ts = 0;
1355 }
1356
8c47cc76
ŁS
1357 if (err)
1358 goto err_out;
1359
1360 /*
1361 * Prepopulate files with data. It might be expected to read some
1362 * "real" data instead of zero'ed files (if no writes to file occurred
1363 * prior to a read job). Engine has to provide a way to do that.
1364 */
1365 if (td->io_ops->prepopulate_file) {
1366 temp_stall_ts = 1;
1367
1368 for_each_file(td, f, i) {
1369 if (output_format & FIO_OUTPUT_NORMAL) {
1370 log_info("%s: Prepopulating IO file (%s)\n",
1371 o->name, f->file_name);
1372 }
1373
1374 err = td->io_ops->prepopulate_file(td, f);
1375 if (err)
1376 break;
1377
1378 err = __file_invalidate_cache(td, f, f->file_offset,
1379 f->io_size);
1380
1381 /*
1382 * Shut up static checker
1383 */
1384 if (f->fd != -1)
1385 close(f->fd);
1386
1387 f->fd = -1;
1388 if (err)
1389 break;
1390 }
1391 temp_stall_ts = 0;
1392 }
1393
7bb48f84 1394 if (err)
e90391eb 1395 goto err_out;
7bb48f84 1396
ea966f81
JA
1397 /*
1398 * iolog already set the total io size, if we read back
1399 * stored entries.
1400 */
77731b29 1401 if (!o->read_iolog_file) {
5be9bf09
TK
1402 if (o->io_size)
1403 td->total_io_size = o->io_size * o->loops;
77731b29
JA
1404 else
1405 td->total_io_size = o->size * o->loops;
1406 }
25460cf6
JA
1407
1408done:
bfbdd35b 1409 if (td->o.zone_mode == ZONE_MODE_ZBD) {
3c1dc34c 1410 err = zbd_setup_files(td);
bfbdd35b
BVA
1411 if (err)
1412 goto err_out;
1413 }
8f39afa7
AD
1414
1415 if (o->create_only)
1416 td->done = 1;
1417
1418 td_restore_runstate(td, old_state);
1419
7bb48f84 1420 return 0;
bfbdd35b 1421
bcdedd0a 1422err_offset:
de98bd30 1423 log_err("%s: you need to specify valid offset=\n", o->name);
e90391eb 1424err_out:
8edd973d 1425 td_restore_runstate(td, old_state);
bcdedd0a 1426 return 1;
53cdc686
JA
1427}
1428
c139f3b4 1429bool pre_read_files(struct thread_data *td)
afad68f7
ZY
1430{
1431 struct fio_file *f;
1432 unsigned int i;
1433
1434 dprint(FD_FILE, "pre_read files\n");
1435
1436 for_each_file(td, f, i) {
c139f3b4
JA
1437 if (!pre_read_file(td, f))
1438 return false;
afad68f7
ZY
1439 }
1440
c139f3b4 1441 return true;
afad68f7
ZY
1442}
1443
3a03f0cf 1444static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
9c6f6316 1445{
2316296a 1446 unsigned int range_size, seed;
abb60c32 1447 uint64_t nranges;
42da5c8b 1448 uint64_t fsize;
9c6f6316
JA
1449
1450 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
42da5c8b 1451 fsize = min(f->real_file_size, f->io_size);
9c6f6316 1452
abb60c32 1453 nranges = (fsize + range_size - 1ULL) / range_size;
9c6f6316 1454
2316296a 1455 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
8425687e 1456 if (!td->o.rand_repeatable)
c08f9533 1457 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
8425687e 1458
9c6f6316 1459 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
a87c90fd 1460 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, td->o.random_center.u.f, seed);
56d9fa4b 1461 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
a87c90fd 1462 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, td->o.random_center.u.f, seed);
56d9fa4b 1463 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
a87c90fd 1464 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, td->o.random_center.u.f, seed);
9c6f6316
JA
1465}
1466
4d832322 1467static bool init_rand_distribution(struct thread_data *td)
9c6f6316
JA
1468{
1469 struct fio_file *f;
1470 unsigned int i;
1471 int state;
1472
fd9882fa
JA
1473 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM ||
1474 td->o.random_distribution == FIO_RAND_DIST_ZONED ||
1475 td->o.random_distribution == FIO_RAND_DIST_ZONED_ABS)
4d832322 1476 return false;
9c6f6316 1477
8edd973d
JA
1478 state = td_bump_runstate(td, TD_SETTING_UP);
1479
9c6f6316
JA
1480 for_each_file(td, f, i)
1481 __init_rand_distribution(td, f);
8edd973d
JA
1482
1483 td_restore_runstate(td, state);
4d832322 1484 return true;
9c6f6316
JA
1485}
1486
75f90d5f
JA
1487/*
1488 * Check if the number of blocks exceeds the randomness capability of
fc002f14 1489 * the selected generator. Tausworthe is 32-bit, the others are fully
75f90d5f
JA
1490 * 64-bit capable.
1491 */
1492static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1493 uint64_t blocks)
1494{
1495 if (blocks <= FRAND32_MAX)
1496 return 0;
1497 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1498 return 0;
1499
1500 /*
1501 * If the user hasn't specified a random generator, switch
1502 * to tausworthe64 with informational warning. If the user did
1503 * specify one, just warn.
1504 */
1505 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1506 f->file_name);
1507
1508 if (!fio_option_is_set(&td->o, random_generator)) {
1509 log_info("fio: Switching to tausworthe64. Use the "
1510 "random_generator= option to get rid of this "
4e795a3e 1511 "warning.\n");
75f90d5f
JA
1512 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1513 return 0;
1514 }
1515
1516 /*
1517 * Just make this information to avoid breaking scripts.
1518 */
1519 log_info("fio: Use the random_generator= option to switch to lfsr or "
1520 "tausworthe64.\n");
1521 return 0;
1522}
1523
4d832322 1524bool init_random_map(struct thread_data *td)
68727076 1525{
51ede0b1 1526 unsigned long long blocks;
68727076
JA
1527 struct fio_file *f;
1528 unsigned int i;
1529
9c6f6316 1530 if (init_rand_distribution(td))
4d832322 1531 return true;
3831a843 1532 if (!td_random(td))
4d832322 1533 return true;
68727076
JA
1534
1535 for_each_file(td, f, i) {
42da5c8b 1536 uint64_t fsize = min(f->real_file_size, f->io_size);
38f30c81 1537
3ed8c570
VF
1538 if (td->o.zone_mode == ZONE_MODE_STRIDED)
1539 fsize = td->o.zone_range;
1540
42da5c8b 1541 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
53737ae0 1542
75f90d5f 1543 if (check_rand_gen_limits(td, f, blocks))
4d832322 1544 return false;
37fbd7e9 1545
8055e41d 1546 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
9781c080 1547 uint64_t seed;
82af46be
JA
1548
1549 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
9c0f3f32 1550
967d1b63
JA
1551 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1552 fio_file_set_lfsr(f);
8055e41d 1553 continue;
78f59d40
VF
1554 } else {
1555 log_err("fio: failed initializing LFSR\n");
1556 return false;
967d1b63 1557 }
3831a843 1558 } else if (!td->o.norandommap) {
7ebd796f 1559 f->io_axmap = axmap_new(blocks);
967d1b63
JA
1560 if (f->io_axmap) {
1561 fio_file_set_axmap(f);
8055e41d 1562 continue;
967d1b63 1563 }
1cad7121
JA
1564 } else if (td->o.norandommap)
1565 continue;
ceadd59e 1566
2b386d25 1567 if (!td->o.softrandommap) {
5ec10eaa
JA
1568 log_err("fio: failed allocating random map. If running"
1569 " a large number of jobs, try the 'norandommap'"
2b386d25
JA
1570 " option or set 'softrandommap'. Or give"
1571 " a larger --alloc-size to fio.\n");
4d832322 1572 return false;
68727076 1573 }
303032ae
JA
1574
1575 log_info("fio: file %s failed allocating random map. Running "
1576 "job without.\n", f->file_name);
68727076
JA
1577 }
1578
4d832322 1579 return true;
68727076
JA
1580}
1581
53cdc686
JA
1582void close_files(struct thread_data *td)
1583{
0ab8db89 1584 struct fio_file *f;
af52b345 1585 unsigned int i;
53cdc686 1586
2be3eec3
JA
1587 for_each_file(td, f, i) {
1588 if (fio_file_open(f))
1589 td_io_close_file(td, f);
1590 }
24ffd2c2
JA
1591}
1592
e711df54
JA
1593void fio_file_free(struct fio_file *f)
1594{
1595 if (fio_file_axmap(f))
1596 axmap_free(f->io_axmap);
1597 if (!fio_file_smalloc(f)) {
1598 free(f->file_name);
1599 free(f);
1600 } else {
1601 sfree(f->file_name);
1602 sfree(f);
1603 }
1604}
1605
24ffd2c2
JA
1606void close_and_free_files(struct thread_data *td)
1607{
1608 struct fio_file *f;
1609 unsigned int i;
1610
ee56ad50
JA
1611 dprint(FD_FILE, "close files\n");
1612
0ab8db89 1613 for_each_file(td, f, i) {
38ef9c90
CF
1614 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1615 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1616 td_io_unlink_file(td, f);
1617 }
1618
22a57ba8
JA
1619 if (fio_file_open(f))
1620 td_io_close_file(td, f);
1621
b9fbcf21 1622 remove_file_hash(f);
b3dc7f07 1623
b5f4d8ba
JA
1624 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1625 dprint(FD_FILE, "free unlink %s\n", f->file_name);
38ef9c90 1626 td_io_unlink_file(td, f);
b5f4d8ba
JA
1627 }
1628
3c1dc34c 1629 zbd_close_file(f);
e711df54 1630 fio_file_free(f);
53cdc686 1631 }
b4a6a59a 1632
2dc1bbeb 1633 td->o.filename = NULL;
cade3ef4 1634 free(td->files);
d7df1d13 1635 free(td->file_locks);
9efef3c4 1636 td->files_index = 0;
b4a6a59a 1637 td->files = NULL;
d7df1d13 1638 td->file_locks = NULL;
27ddbfa0 1639 td->o.file_lock_mode = FILE_LOCK_NONE;
2dc1bbeb 1640 td->o.nr_files = 0;
53cdc686 1641}
af52b345 1642
e3bab463 1643static void get_file_type(struct fio_file *f)
af52b345
JA
1644{
1645 struct stat sb;
1646
66159828
JA
1647 if (!strcmp(f->file_name, "-"))
1648 f->filetype = FIO_TYPE_PIPE;
1649 else
1650 f->filetype = FIO_TYPE_FILE;
af52b345 1651
d5b78f5a 1652#ifdef WIN32
3892182a
BC
1653 /* \\.\ is the device namespace in Windows, where every file is
1654 * a block device */
1655 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
686fbd31 1656 f->filetype = FIO_TYPE_BLOCK;
d5b78f5a 1657#endif
3892182a 1658
b30d395e 1659 if (!stat(f->file_name, &sb)) {
3892182a 1660 if (S_ISBLK(sb.st_mode))
686fbd31 1661 f->filetype = FIO_TYPE_BLOCK;
af52b345
JA
1662 else if (S_ISCHR(sb.st_mode))
1663 f->filetype = FIO_TYPE_CHAR;
b5605e9d
JA
1664 else if (S_ISFIFO(sb.st_mode))
1665 f->filetype = FIO_TYPE_PIPE;
af52b345
JA
1666 }
1667}
1668
1b2a83dc 1669static bool __is_already_allocated(const char *fname, bool set)
190b8f0c 1670{
90426237 1671 struct flist_head *entry;
1b2a83dc 1672 bool ret;
bcbfeefa 1673
1b2a83dc
JA
1674 ret = file_bloom_exists(fname, set);
1675 if (!ret)
1676 return ret;
90426237
JA
1677
1678 flist_for_each(entry, &filename_list) {
04d6530f 1679 struct file_name *fn;
90426237 1680
04d6530f
JA
1681 fn = flist_entry(entry, struct file_name, list);
1682
1683 if (!strcmp(fn->filename, fname))
1684 return true;
90426237
JA
1685 }
1686
04d6530f 1687 return false;
bcbfeefa
CE
1688}
1689
04d6530f 1690static bool is_already_allocated(const char *fname)
bcbfeefa 1691{
04d6530f 1692 bool ret;
bcbfeefa 1693
90426237 1694 fio_file_hash_lock();
1b2a83dc 1695 ret = __is_already_allocated(fname, false);
90426237 1696 fio_file_hash_unlock();
04d6530f 1697
90426237
JA
1698 return ret;
1699}
bcbfeefa 1700
90426237
JA
1701static void set_already_allocated(const char *fname)
1702{
1703 struct file_name *fn;
1704
1705 fn = malloc(sizeof(struct file_name));
1706 fn->filename = strdup(fname);
1707
1708 fio_file_hash_lock();
1b2a83dc 1709 if (!__is_already_allocated(fname, true)) {
90426237
JA
1710 flist_add_tail(&fn->list, &filename_list);
1711 fn = NULL;
bcbfeefa 1712 }
90426237 1713 fio_file_hash_unlock();
bcbfeefa 1714
90426237
JA
1715 if (fn) {
1716 free(fn->filename);
1717 free(fn);
1718 }
bcbfeefa
CE
1719}
1720
190b8f0c
CF
1721static void free_already_allocated(void)
1722{
bcbfeefa
CE
1723 struct flist_head *entry, *tmp;
1724 struct file_name *fn;
1725
90426237
JA
1726 if (flist_empty(&filename_list))
1727 return;
1728
1729 fio_file_hash_lock();
1730 flist_for_each_safe(entry, tmp, &filename_list) {
1731 fn = flist_entry(entry, struct file_name, list);
1732 free(fn->filename);
1733 flist_del(&fn->list);
1734 free(fn);
bcbfeefa 1735 }
90426237
JA
1736
1737 fio_file_hash_unlock();
bcbfeefa
CE
1738}
1739
7b5cb700
JA
1740static struct fio_file *alloc_new_file(struct thread_data *td)
1741{
1742 struct fio_file *f;
1743
cb9bf647
JB
1744 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1745 f = calloc(1, sizeof(*f));
1746 else
e0b3258b 1747 f = scalloc(1, sizeof(*f));
7b5cb700 1748 if (!f) {
7b5cb700
JA
1749 assert(0);
1750 return NULL;
1751 }
1752
1753 f->fd = -1;
1754 f->shadow_fd = -1;
1755 fio_file_reset(td, f);
6081231a
JA
1756 if (!td_ioengine_flagged(td, FIO_NOFILEHASH))
1757 fio_file_set_smalloc(f);
7b5cb700
JA
1758 return f;
1759}
1760
04d6530f
JA
1761bool exists_and_not_regfile(const char *filename)
1762{
1763 struct stat sb;
1764
1765 if (lstat(filename, &sb) == -1)
1766 return false;
1767
1768#ifndef WIN32 /* NOT Windows */
1769 if (S_ISREG(sb.st_mode))
1770 return false;
1771#else
1772 /* \\.\ is the device namespace in Windows, where every file
1773 * is a device node */
1774 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1775 return false;
1776#endif
1777
1778 return true;
1779}
1780
5903e7b7 1781int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
af52b345 1782{
7b4e4fe5 1783 int cur_files = td->files_index;
bd0ee748 1784 char file_name[PATH_MAX];
af52b345 1785 struct fio_file *f;
bd0ee748 1786 int len = 0;
af52b345 1787
ee56ad50
JA
1788 dprint(FD_FILE, "add file %s\n", fname);
1789
bcbfeefa 1790 if (td->o.directory)
922a5be8
JA
1791 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1792 td->o.unique_filename);
bcbfeefa
CE
1793
1794 sprintf(file_name + len, "%s", fname);
1795
1796 /* clean cloned siblings using existing files */
04d6530f
JA
1797 if (numjob && is_already_allocated(file_name) &&
1798 !exists_and_not_regfile(fname))
bcbfeefa
CE
1799 return 0;
1800
7b5cb700 1801 f = alloc_new_file(td);
bd0ee748 1802
fc99bc0d 1803 if (td->files_size <= td->files_index) {
1983e327 1804 unsigned int new_size = td->o.nr_files + 1;
126d65c6 1805
fc99bc0d
JA
1806 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1807
1808 td->files = realloc(td->files, new_size * sizeof(f));
d537c08b
JM
1809 if (td->files == NULL) {
1810 log_err("fio: realloc OOM\n");
1811 assert(0);
1812 }
d7df1d13
JA
1813 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1814 td->file_locks = realloc(td->file_locks, new_size);
1815 if (!td->file_locks) {
1816 log_err("fio: realloc OOM\n");
1817 assert(0);
1818 }
1819 td->file_locks[cur_files] = FILE_LOCK_NONE;
1820 }
fc99bc0d
JA
1821 td->files_size = new_size;
1822 }
8bb7679e 1823 td->files[cur_files] = f;
89ac1d48 1824 f->fileno = cur_files;
126d65c6 1825
07eb79df
JA
1826 /*
1827 * init function, io engine may not be loaded yet
1828 */
9b87f09b 1829 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
07eb79df
JA
1830 f->real_file_size = -1ULL;
1831
cb9bf647
JB
1832 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1833 f->file_name = strdup(file_name);
1834 else
1835 f->file_name = smalloc_strdup(file_name);
b2e6494c
JA
1836
1837 /* can't handle smalloc failure from here */
1838 assert(f->file_name);
0b9d69ec 1839
e3bab463 1840 get_file_type(f);
af52b345 1841
4d4e80f2
JA
1842 switch (td->o.file_lock_mode) {
1843 case FILE_LOCK_NONE:
1844 break;
1845 case FILE_LOCK_READWRITE:
d7df1d13 1846 f->rwlock = fio_rwlock_init();
4d4e80f2
JA
1847 break;
1848 case FILE_LOCK_EXCLUSIVE:
971caeb1 1849 f->lock = fio_sem_init(FIO_SEM_UNLOCKED);
4d4e80f2
JA
1850 break;
1851 default:
1852 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1853 assert(0);
1854 }
29c1349f 1855
7b4e4fe5 1856 td->files_index++;
f29b25a3 1857
084a5475
JA
1858 if (td->o.numjobs > 1)
1859 set_already_allocated(file_name);
bcbfeefa 1860
5903e7b7
JA
1861 if (inc)
1862 td->o.nr_files++;
1863
5ec10eaa
JA
1864 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1865 cur_files);
9efef3c4 1866
f29b25a3 1867 return cur_files;
af52b345 1868}
0ad920e7 1869
49ffb4a2
JA
1870int add_file_exclusive(struct thread_data *td, const char *fname)
1871{
1872 struct fio_file *f;
1873 unsigned int i;
1874
1875 for_each_file(td, f, i) {
1876 if (!strcmp(f->file_name, fname))
1877 return i;
1878 }
1879
5903e7b7 1880 return add_file(td, fname, 0, 1);
49ffb4a2
JA
1881}
1882
0ad920e7
JA
1883void get_file(struct fio_file *f)
1884{
8172fe97 1885 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
d6aed795 1886 assert(fio_file_open(f));
0ad920e7
JA
1887 f->references++;
1888}
1889
6977bcd0 1890int put_file(struct thread_data *td, struct fio_file *f)
0ad920e7 1891{
98e1ac4e 1892 int f_ret = 0, ret = 0;
6977bcd0 1893
8172fe97 1894 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
ee56ad50 1895
22a57ba8
JA
1896 if (!fio_file_open(f)) {
1897 assert(f->fd == -1);
6977bcd0 1898 return 0;
22a57ba8 1899 }
0ad920e7
JA
1900
1901 assert(f->references);
1902 if (--f->references)
6977bcd0 1903 return 0;
0ad920e7 1904
230f33fb
AK
1905 disk_util_dec(f->du);
1906
1907 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1908 unlock_file_all(td, f);
1909
71b84caa 1910 if (should_fsync(td) && td->o.fsync_on_close) {
98e1ac4e 1911 f_ret = fsync(f->fd);
71b84caa
JA
1912 if (f_ret < 0)
1913 f_ret = errno;
1914 }
ebb1415f 1915
0ad920e7 1916 if (td->io_ops->close_file)
6977bcd0 1917 ret = td->io_ops->close_file(td, f);
1020a139 1918
98e1ac4e 1919 if (!ret)
a5fb461f 1920 ret = f_ret;
98e1ac4e 1921
0ad920e7 1922 td->nr_open_files--;
230f33fb 1923 fio_file_clear_closing(f);
d6aed795 1924 fio_file_clear_open(f);
22a57ba8 1925 assert(f->fd == -1);
6977bcd0 1926 return ret;
0ad920e7 1927}
bbf6b540 1928
4d4e80f2 1929void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
b2bd2bd9 1930{
4d4e80f2
JA
1931 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1932 return;
29c1349f 1933
4d4e80f2
JA
1934 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1935 if (ddir == DDIR_READ)
d7df1d13 1936 fio_rwlock_read(f->rwlock);
4d4e80f2 1937 else
d7df1d13 1938 fio_rwlock_write(f->rwlock);
4d4e80f2 1939 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
971caeb1 1940 fio_sem_down(f->lock);
4d4e80f2 1941
d7df1d13 1942 td->file_locks[f->fileno] = td->o.file_lock_mode;
b2bd2bd9
JA
1943}
1944
4d4e80f2 1945void unlock_file(struct thread_data *td, struct fio_file *f)
b2bd2bd9 1946{
4d4e80f2
JA
1947 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1948 return;
4d4e80f2 1949
d7df1d13
JA
1950 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1951 fio_rwlock_unlock(f->rwlock);
1952 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
971caeb1 1953 fio_sem_up(f->lock);
d7df1d13
JA
1954
1955 td->file_locks[f->fileno] = FILE_LOCK_NONE;
b2bd2bd9
JA
1956}
1957
4d4e80f2
JA
1958void unlock_file_all(struct thread_data *td, struct fio_file *f)
1959{
f2a2803a 1960 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
27ddbfa0 1961 return;
d7df1d13
JA
1962 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1963 unlock_file(td, f);
4d4e80f2
JA
1964}
1965
13bddad9 1966static bool recurse_dir(struct thread_data *td, const char *dirname)
bbf6b540
JA
1967{
1968 struct dirent *dir;
13bddad9 1969 bool ret = false;
bbf6b540
JA
1970 DIR *D;
1971
1972 D = opendir(dirname);
1973 if (!D) {
0ddb270c
JA
1974 char buf[FIO_VERROR_SIZE];
1975
98ffb8f3 1976 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
0ddb270c 1977 td_verror(td, errno, buf);
13bddad9 1978 return true;
bbf6b540
JA
1979 }
1980
1981 while ((dir = readdir(D)) != NULL) {
1982 char full_path[PATH_MAX];
1983 struct stat sb;
1984
e85b2b83
JA
1985 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1986 continue;
96d32d51 1987
53a7af85 1988 sprintf(full_path, "%s%c%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
bbf6b540
JA
1989
1990 if (lstat(full_path, &sb) == -1) {
1991 if (errno != ENOENT) {
1992 td_verror(td, errno, "stat");
13bddad9 1993 ret = true;
68ace9e0 1994 break;
bbf6b540
JA
1995 }
1996 }
1997
1998 if (S_ISREG(sb.st_mode)) {
5903e7b7 1999 add_file(td, full_path, 0, 1);
bbf6b540
JA
2000 continue;
2001 }
0ddb270c
JA
2002 if (!S_ISDIR(sb.st_mode))
2003 continue;
bbf6b540 2004
5ec10eaa
JA
2005 ret = recurse_dir(td, full_path);
2006 if (ret)
bbf6b540
JA
2007 break;
2008 }
2009
2010 closedir(D);
2011 return ret;
2012}
2013
2014int add_dir_files(struct thread_data *td, const char *path)
2015{
0ddb270c
JA
2016 int ret = recurse_dir(td, path);
2017
2018 if (!ret)
2019 log_info("fio: opendir added %d files\n", td->o.nr_files);
2020
2021 return ret;
bbf6b540 2022}
cade3ef4
JA
2023
2024void dup_files(struct thread_data *td, struct thread_data *org)
2025{
2026 struct fio_file *f;
2027 unsigned int i;
9efef3c4
JA
2028
2029 dprint(FD_FILE, "dup files: %d\n", org->files_index);
cade3ef4
JA
2030
2031 if (!org->files)
2032 return;
2033
5d7de92e 2034 td->files = calloc(org->files_index, sizeof(f));
cade3ef4 2035
d7df1d13
JA
2036 if (td->o.file_lock_mode != FILE_LOCK_NONE)
2037 td->file_locks = malloc(org->files_index);
2038
5d7de92e 2039 assert(org->files_index >= org->o.nr_files);
9efef3c4 2040 for_each_file(org, f, i) {
b0fe421a
JA
2041 struct fio_file *__f;
2042
7b5cb700 2043 __f = alloc_new_file(td);
0b9d69ec 2044
bc3456fa 2045 if (f->file_name) {
cb9bf647
JB
2046 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
2047 __f->file_name = strdup(f->file_name);
2048 else
2049 __f->file_name = smalloc_strdup(f->file_name);
0b9d69ec 2050
b2e6494c
JA
2051 /* can't handle smalloc failure from here */
2052 assert(__f->file_name);
bc3456fa
AC
2053 __f->filetype = f->filetype;
2054 }
b0fe421a 2055
67ad9242
JA
2056 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
2057 __f->lock = f->lock;
2058 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
2059 __f->rwlock = f->rwlock;
2060
b0fe421a 2061 td->files[i] = __f;
cade3ef4
JA
2062 }
2063}
f29b25a3
JA
2064
2065/*
2066 * Returns the index that matches the filename, or -1 if not there
2067 */
2068int get_fileno(struct thread_data *td, const char *fname)
2069{
2070 struct fio_file *f;
2071 unsigned int i;
2072
2073 for_each_file(td, f, i)
2074 if (!strcmp(f->file_name, fname))
2075 return i;
2076
2077 return -1;
2078}
2079
2080/*
2081 * For log usage, where we add/open/close files automatically
2082 */
2083void free_release_files(struct thread_data *td)
2084{
2085 close_files(td);
66ee4002
JA
2086 td->o.nr_files = 0;
2087 td->o.open_files = 0;
f29b25a3 2088 td->files_index = 0;
f29b25a3 2089}
33c48814
JA
2090
2091void fio_file_reset(struct thread_data *td, struct fio_file *f)
2092{
f1dfb668
JA
2093 int i;
2094
2095 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2096 f->last_pos[i] = f->file_offset;
2097 f->last_start[i] = -1ULL;
2098 }
2099
967d1b63 2100 if (fio_file_axmap(f))
33c48814 2101 axmap_reset(f->io_axmap);
967d1b63 2102 else if (fio_file_lfsr(f))
33c48814 2103 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
bfbdd35b
BVA
2104
2105 zbd_file_reset(td, f);
33c48814 2106}
002fe734 2107
747b3105 2108bool fio_files_done(struct thread_data *td)
002fe734
JA
2109{
2110 struct fio_file *f;
2111 unsigned int i;
2112
2113 for_each_file(td, f, i)
2114 if (!fio_file_done(f))
747b3105 2115 return false;
002fe734 2116
747b3105 2117 return true;
002fe734 2118}
bcbfeefa
CE
2119
2120/* free memory used in initialization phase only */
190b8f0c
CF
2121void filesetup_mem_free(void)
2122{
bcbfeefa
CE
2123 free_already_allocated();
2124}
47534cda
TK
2125
2126/*
2127 * This function is for platforms which support direct I/O but not O_DIRECT.
2128 */
2129int fio_set_directio(struct thread_data *td, struct fio_file *f)
2130{
2131#ifdef FIO_OS_DIRECTIO
2905de74 2132 int ret = fio_set_odirect(f);
47534cda
TK
2133
2134 if (ret) {
2135 td_verror(td, ret, "fio_set_directio");
2136#if defined(__sun__)
2137 if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
2138 log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
2139 } else {
2140 log_err("fio: the file system does not seem to support direct IO\n");
2141 }
2142#else
2143 log_err("fio: the file system does not seem to support direct IO\n");
2144#endif
2145 return -1;
2146 }
2147
2148 return 0;
2149#else
51102e0d 2150 log_err("fio: direct IO is not supported on this host operating system\n");
47534cda
TK
2151 return -1;
2152#endif
2153}