Fix offset_increment option and add man page entry for it
[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"
53cdc686 15
a596f047
EG
16#ifdef FIO_HAVE_LINUX_FALLOCATE
17#include <linux/falloc.h>
18#endif
19
7172cfe8
JA
20static int root_warn;
21
c592b9fe
JA
22static inline void clear_error(struct thread_data *td)
23{
24 td->error = 0;
25 td->verror[0] = '\0';
26}
27
3baddf24
JA
28/*
29 * Leaves f->fd open on success, caller must close
30 */
7bb48f84 31static int extend_file(struct thread_data *td, struct fio_file *f)
25205e97 32{
ea443657 33 int r, new_layout = 0, unlink_file = 0, flags;
25205e97
JA
34 unsigned long long left;
35 unsigned int bs;
36 char *b;
b2a15192 37
4241ea8f
JA
38 if (read_only) {
39 log_err("fio: refusing extend of file due to read-only\n");
40 return 0;
41 }
42
507a702f
JA
43 /*
44 * check if we need to lay the file out complete again. fio
45 * does that for operations involving reads, or for writes
46 * where overwrite is set
47 */
ffdfabd4
JA
48 if (td_read(td) || (td_write(td) && td->o.overwrite) ||
49 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
507a702f 50 new_layout = 1;
ea443657
JA
51 if (td_write(td) && !td->o.overwrite)
52 unlink_file = 1;
507a702f 53
6ae1f57f 54 if (unlink_file || new_layout) {
bd199f2b 55 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
982016d6 56 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
7bb48f84
JA
57 td_verror(td, errno, "unlink");
58 return 1;
59 }
60 }
61
507a702f
JA
62 flags = O_WRONLY | O_CREAT;
63 if (new_layout)
64 flags |= O_TRUNC;
65
ee56ad50 66 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
507a702f 67 f->fd = open(f->file_name, flags, 0644);
53cdc686 68 if (f->fd < 0) {
e1161c32 69 td_verror(td, errno, "open");
53cdc686
JA
70 return 1;
71 }
72
7bc8c2cf 73#ifdef FIO_HAVE_FALLOCATE
a596f047
EG
74 if (!td->o.fill_device) {
75 switch (td->o.fallocate_mode) {
76 case FIO_FALLOCATE_NONE:
77 break;
78 case FIO_FALLOCATE_POSIX:
79 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
80 f->file_name, f->real_file_size);
81
82 r = posix_fallocate(f->fd, 0, f->real_file_size);
83 if (r > 0) {
84 log_err("fio: posix_fallocate fails: %s\n",
85 strerror(r));
86 }
87 break;
88#ifdef FIO_HAVE_LINUX_FALLOCATE
89 case FIO_FALLOCATE_KEEP_SIZE:
90 dprint(FD_FILE,
91 "fallocate(FALLOC_FL_KEEP_SIZE) "
92 "file %s size %llu\n",
93 f->file_name, f->real_file_size);
7bc8c2cf 94
a596f047
EG
95 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
96 f->real_file_size);
97 if (r != 0) {
98 td_verror(td, errno, "fallocate");
99 }
100 break;
101#endif /* FIO_HAVE_LINUX_FALLOCATE */
102 default:
103 log_err("fio: unknown fallocate mode: %d\n",
104 td->o.fallocate_mode);
105 assert(0);
7bc8c2cf
JA
106 }
107 }
a596f047 108#endif /* FIO_HAVE_FALLOCATE */
9b836561 109
fc74ac1d
SL
110 if (!new_layout)
111 goto done;
112
5e0074c2
JA
113 /*
114 * The size will be -1ULL when fill_device is used, so don't truncate
115 * or fallocate this file, just write it
116 */
117 if (!td->o.fill_device) {
118 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
ee56ad50 119 f->real_file_size);
5e0074c2
JA
120 if (ftruncate(f->fd, f->real_file_size) == -1) {
121 td_verror(td, errno, "ftruncate");
122 goto err;
123 }
5e0074c2 124 }
40f8298c 125
2dc1bbeb
JA
126 b = malloc(td->o.max_bs[DDIR_WRITE]);
127 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
53cdc686 128
7bb48f84 129 left = f->real_file_size;
53cdc686 130 while (left && !td->terminate) {
2dc1bbeb 131 bs = td->o.max_bs[DDIR_WRITE];
53cdc686
JA
132 if (bs > left)
133 bs = left;
134
135 r = write(f->fd, b, bs);
136
5e0074c2
JA
137 if (r > 0) {
138 left -= r;
53cdc686
JA
139 continue;
140 } else {
5e0074c2
JA
141 if (r < 0) {
142 int __e = errno;
143
144 if (__e == ENOSPC) {
145 if (td->o.fill_device)
146 break;
147 log_info("fio: ENOSPC on laying out "
148 "file, stopping\n");
149 break;
150 }
e1161c32 151 td_verror(td, errno, "write");
5e0074c2 152 } else
e1161c32 153 td_verror(td, EIO, "write");
53cdc686
JA
154
155 break;
156 }
157 }
158
ffdfabd4
JA
159 if (td->terminate) {
160 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
53cdc686 161 unlink(f->file_name);
ffdfabd4 162 } else if (td->o.create_fsync) {
98e1ac4e
JA
163 if (fsync(f->fd) < 0) {
164 td_verror(td, errno, "fsync");
165 goto err;
166 }
167 }
0d1cd207 168 if (td->o.fill_device && !td_write(td)) {
d6aed795 169 fio_file_clear_size_known(f);
5e0074c2
JA
170 if (td_io_get_file_size(td, f))
171 goto err;
172 if (f->io_size > f->real_file_size)
173 f->io_size = f->real_file_size;
174 }
53cdc686
JA
175
176 free(b);
507a702f 177done:
53cdc686
JA
178 return 0;
179err:
180 close(f->fd);
181 f->fd = -1;
182 return 1;
183}
184
afad68f7
ZY
185static int pre_read_file(struct thread_data *td, struct fio_file *f)
186{
b0f65863 187 int r, did_open = 0, old_runstate;
afad68f7
ZY
188 unsigned long long left;
189 unsigned int bs;
190 char *b;
191
9c0d2241
JA
192 if (td->io_ops->flags & FIO_PIPEIO)
193 return 0;
194
d6aed795 195 if (!fio_file_open(f)) {
b0f65863
JA
196 if (td->io_ops->open_file(td, f)) {
197 log_err("fio: cannot pre-read, failed to open file\n");
198 return 1;
199 }
200 did_open = 1;
201 }
202
203 old_runstate = td->runstate;
204 td_set_runstate(td, TD_PRE_READING);
205
afad68f7
ZY
206 bs = td->o.max_bs[DDIR_READ];
207 b = malloc(bs);
208 memset(b, 0, bs);
209
210 lseek(f->fd, f->file_offset, SEEK_SET);
211 left = f->io_size;
212
213 while (left && !td->terminate) {
214 if (bs > left)
215 bs = left;
216
217 r = read(f->fd, b, bs);
218
219 if (r == (int) bs) {
220 left -= bs;
221 continue;
222 } else {
223 td_verror(td, EIO, "pre_read");
224 break;
225 }
226 }
227
b0f65863
JA
228 td_set_runstate(td, old_runstate);
229
230 if (did_open)
231 td->io_ops->close_file(td, f);
afad68f7
ZY
232 free(b);
233 return 0;
234}
235
7bb48f84 236static unsigned long long get_rand_file_size(struct thread_data *td)
9c60ce64 237{
dc873b6f 238 unsigned long long ret, sized;
1294c3ec 239 unsigned long r;
9c60ce64 240
4c07ad86
JA
241 if (td->o.use_os_rand) {
242 r = os_random_long(&td->file_size_state);
243 sized = td->o.file_size_high - td->o.file_size_low;
244 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
245 } else {
246 r = __rand(&td->__file_size_state);
247 sized = td->o.file_size_high - td->o.file_size_low;
248 ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
249 }
250
5ec10eaa 251 ret += td->o.file_size_low;
2dc1bbeb 252 ret -= (ret % td->o.rw_min_bs);
9c60ce64
JA
253 return ret;
254}
255
53cdc686
JA
256static int file_size(struct thread_data *td, struct fio_file *f)
257{
258 struct stat st;
259
df9c26b1 260 if (stat(f->file_name, &st) == -1) {
7bb48f84
JA
261 td_verror(td, errno, "fstat");
262 return 1;
263 }
53cdc686 264
7bb48f84 265 f->real_file_size = st.st_size;
53cdc686
JA
266 return 0;
267}
268
269static int bdev_size(struct thread_data *td, struct fio_file *f)
270{
9b836561 271 unsigned long long bytes = 0;
53cdc686
JA
272 int r;
273
df9c26b1
JA
274 if (td->io_ops->open_file(td, f)) {
275 log_err("fio: failed opening blockdev %s for size check\n",
276 f->file_name);
277 return 1;
278 }
279
ecc314ba 280 r = blockdev_size(f, &bytes);
53cdc686 281 if (r) {
e1161c32 282 td_verror(td, r, "blockdev_size");
df9c26b1 283 goto err;
53cdc686
JA
284 }
285
7ab077ab
JA
286 if (!bytes) {
287 log_err("%s: zero sized block device?\n", f->file_name);
df9c26b1 288 goto err;
7ab077ab
JA
289 }
290
53cdc686 291 f->real_file_size = bytes;
22a57ba8 292 td->io_ops->close_file(td, f);
53cdc686 293 return 0;
df9c26b1
JA
294err:
295 td->io_ops->close_file(td, f);
296 return 1;
53cdc686
JA
297}
298
4ccdccd1
JA
299static int char_size(struct thread_data *td, struct fio_file *f)
300{
301#ifdef FIO_HAVE_CHARDEV_SIZE
9b836561 302 unsigned long long bytes = 0;
4ccdccd1
JA
303 int r;
304
305 if (td->io_ops->open_file(td, f)) {
306 log_err("fio: failed opening blockdev %s for size check\n",
307 f->file_name);
308 return 1;
309 }
310
ecc314ba 311 r = chardev_size(f, &bytes);
4ccdccd1
JA
312 if (r) {
313 td_verror(td, r, "chardev_size");
314 goto err;
315 }
316
317 if (!bytes) {
318 log_err("%s: zero sized char device?\n", f->file_name);
319 goto err;
320 }
321
322 f->real_file_size = bytes;
323 td->io_ops->close_file(td, f);
324 return 0;
325err:
326 td->io_ops->close_file(td, f);
327 return 1;
328#else
329 f->real_file_size = -1ULL;
330 return 0;
331#endif
332}
333
53cdc686
JA
334static int get_file_size(struct thread_data *td, struct fio_file *f)
335{
336 int ret = 0;
337
d6aed795 338 if (fio_file_size_known(f))
409b3417
JA
339 return 0;
340
7bb48f84
JA
341 if (f->filetype == FIO_TYPE_FILE)
342 ret = file_size(td, f);
343 else if (f->filetype == FIO_TYPE_BD)
53cdc686 344 ret = bdev_size(td, f);
4ccdccd1
JA
345 else if (f->filetype == FIO_TYPE_CHAR)
346 ret = char_size(td, f);
53cdc686
JA
347 else
348 f->real_file_size = -1;
349
350 if (ret)
351 return ret;
352
353 if (f->file_offset > f->real_file_size) {
0f2152c1 354 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
5ec10eaa 355 f->file_offset, f->real_file_size);
53cdc686
JA
356 return 1;
357 }
358
d6aed795 359 fio_file_set_size_known(f);
53cdc686
JA
360 return 0;
361}
362
3baddf24
JA
363static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
364 unsigned long long off,
365 unsigned long long len)
e5b401d4
JA
366{
367 int ret = 0;
368
5e0074c2 369 if (len == -1ULL)
3baddf24
JA
370 len = f->io_size;
371 if (off == -1ULL)
372 off = f->file_offset;
ee56ad50 373
0d1cd207
JA
374 if (len == -1ULL || off == -1ULL)
375 return 0;
376
3baddf24
JA
377 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
378 len);
b5af8293 379
e5b401d4
JA
380 /*
381 * FIXME: add blockdev flushing too
382 */
a1c58075 383 if (f->mmap_ptr) {
03e20d68 384 ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED);
a1c58075 385#ifdef FIO_MADV_FREE
03e20d68 386 (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
a1c58075
JA
387#endif
388 } else if (f->filetype == FIO_TYPE_FILE) {
ecc314ba 389 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
5ec10eaa 390 } else if (f->filetype == FIO_TYPE_BD) {
ecc314ba 391 ret = blockdev_invalidate_cache(f);
7e0e25c9 392 if (ret < 0 && errno == EACCES && geteuid()) {
7172cfe8 393 if (!root_warn) {
5ec10eaa
JA
394 log_err("fio: only root may flush block "
395 "devices. Cache flush bypassed!\n");
7172cfe8
JA
396 root_warn = 1;
397 }
7e0e25c9
JA
398 ret = 0;
399 }
b5605e9d 400 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
e5b401d4
JA
401 ret = 0;
402
403 if (ret < 0) {
e1161c32 404 td_verror(td, errno, "invalidate_cache");
e5b401d4 405 return 1;
3baddf24
JA
406 } else if (ret > 0) {
407 td_verror(td, ret, "invalidate_cache");
408 return 1;
e5b401d4
JA
409 }
410
ad2da605 411 return ret;
3baddf24
JA
412
413}
414
415int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
416{
d6aed795 417 if (!fio_file_open(f))
a5fb461f
JA
418 return 0;
419
5e0074c2 420 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
e5b401d4
JA
421}
422
6977bcd0 423int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
53cdc686 424{
6977bcd0
JA
425 int ret = 0;
426
ee56ad50 427 dprint(FD_FILE, "fd close %s\n", f->file_name);
4906e0b5
JA
428
429 remove_file_hash(f);
430
6977bcd0
JA
431 if (close(f->fd) < 0)
432 ret = errno;
433
b5af8293 434 f->fd = -1;
6977bcd0 435 return ret;
53cdc686
JA
436}
437
4d4e80f2 438static int file_lookup_open(struct fio_file *f, int flags)
53cdc686 439{
29c1349f 440 struct fio_file *__f;
4d4e80f2
JA
441 int from_hash;
442
443 __f = lookup_file_hash(f->file_name);
444 if (__f) {
9efef3c4 445 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
4d4e80f2
JA
446 /*
447 * racy, need the __f->lock locked
448 */
449 f->lock = __f->lock;
450 f->lock_owner = __f->lock_owner;
451 f->lock_batch = __f->lock_batch;
452 f->lock_ddir = __f->lock_ddir;
4d4e80f2
JA
453 from_hash = 1;
454 } else {
9efef3c4 455 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
4d4e80f2
JA
456 from_hash = 0;
457 }
458
e8670ef8 459 f->fd = open(f->file_name, flags, 0600);
4d4e80f2
JA
460 return from_hash;
461}
462
463int generic_open_file(struct thread_data *td, struct fio_file *f)
464{
66159828 465 int is_std = 0;
53cdc686 466 int flags = 0;
29c1349f 467 int from_hash = 0;
53cdc686 468
ee56ad50
JA
469 dprint(FD_FILE, "fd open %s\n", f->file_name);
470
66159828
JA
471 if (!strcmp(f->file_name, "-")) {
472 if (td_rw(td)) {
473 log_err("fio: can't read/write to stdin/out\n");
474 return 1;
475 }
476 is_std = 1;
ce98fa66
JA
477
478 /*
479 * move output logging to stderr, if we are writing to stdout
480 */
481 if (td_write(td))
482 f_out = stderr;
66159828
JA
483 }
484
2dc1bbeb 485 if (td->o.odirect)
2fd233b7 486 flags |= OS_O_DIRECT;
2dc1bbeb 487 if (td->o.sync_io)
2fd233b7 488 flags |= O_SYNC;
ad92396c 489 if (f->filetype != FIO_TYPE_FILE)
5921e80c 490 flags |= FIO_O_NOATIME;
814452bd
JA
491 if (td->o.create_on_open)
492 flags |= O_CREAT;
53cdc686 493
056f3459 494open_again:
660a1cb5 495 if (td_write(td)) {
17308158
JA
496 if (!read_only)
497 flags |= O_RDWR;
53cdc686 498
af52b345 499 if (f->filetype == FIO_TYPE_FILE)
2fd233b7 500 flags |= O_CREAT;
2fd233b7 501
66159828
JA
502 if (is_std)
503 f->fd = dup(STDOUT_FILENO);
4d4e80f2
JA
504 else
505 from_hash = file_lookup_open(f, flags);
2fd233b7 506 } else {
4241ea8f 507 if (f->filetype == FIO_TYPE_CHAR && !read_only)
2fd233b7
JA
508 flags |= O_RDWR;
509 else
510 flags |= O_RDONLY;
511
66159828
JA
512 if (is_std)
513 f->fd = dup(STDIN_FILENO);
4d4e80f2
JA
514 else
515 from_hash = file_lookup_open(f, flags);
53cdc686
JA
516 }
517
518 if (f->fd == -1) {
e4e33258 519 char buf[FIO_VERROR_SIZE];
e1161c32
JA
520 int __e = errno;
521
835d9b9e 522 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
5921e80c 523 flags &= ~FIO_O_NOATIME;
056f3459
AC
524 goto open_again;
525 }
526
e8670ef8 527 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
e4e33258
JA
528
529 td_verror(td, __e, buf);
53cdc686
JA
530 }
531
29c1349f
JA
532 if (!from_hash && f->fd != -1) {
533 if (add_file_hash(f)) {
3f0ca9b9 534 int fio_unused ret;
29c1349f
JA
535
536 /*
537 * OK to ignore, we haven't done anything with it
538 */
539 ret = generic_close_file(td, f);
540 goto open_again;
541 }
542 }
4906e0b5 543
53cdc686 544 return 0;
b5af8293
JA
545}
546
df9c26b1 547int generic_get_file_size(struct thread_data *td, struct fio_file *f)
21972cde 548{
df9c26b1 549 return get_file_size(td, f);
21972cde
JA
550}
551
7bb48f84
JA
552/*
553 * open/close all files, so that ->real_file_size gets set
554 */
bab3fd58 555static int get_file_sizes(struct thread_data *td)
7bb48f84
JA
556{
557 struct fio_file *f;
558 unsigned int i;
bab3fd58 559 int err = 0;
7bb48f84
JA
560
561 for_each_file(td, f, i) {
5ec10eaa
JA
562 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
563 f->file_name);
9efef3c4 564
99a47c69 565 if (td_io_get_file_size(td, f)) {
40b44f4a
JA
566 if (td->error != ENOENT) {
567 log_err("%s\n", td->verror);
568 err = 1;
569 }
541d66d7 570 clear_error(td);
07eb79df 571 }
409b3417
JA
572
573 if (f->real_file_size == -1ULL && td->o.size)
574 f->real_file_size = td->o.size / td->o.nr_files;
7bb48f84 575 }
bab3fd58
JA
576
577 return err;
7bb48f84
JA
578}
579
2e3bd4c2
JA
580struct fio_mount {
581 struct flist_head list;
582 const char *base;
583 char __base[256];
584 unsigned int key;
585};
586
587/*
588 * Get free number of bytes for each file on each unique mount.
589 */
590static unsigned long long get_fs_free_counts(struct thread_data *td)
591{
592 struct flist_head *n, *tmp;
68b0316f 593 unsigned long long ret = 0;
2e3bd4c2
JA
594 struct fio_mount *fm;
595 FLIST_HEAD(list);
596 struct fio_file *f;
597 unsigned int i;
598
599 for_each_file(td, f, i) {
600 struct stat sb;
601 char buf[256];
602
4ccdccd1
JA
603 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
604 if (f->real_file_size != -1ULL)
605 ret += f->real_file_size;
68b0316f
JA
606 continue;
607 } else if (f->filetype != FIO_TYPE_FILE)
608 continue;
609
2e3bd4c2
JA
610 strcpy(buf, f->file_name);
611
612 if (stat(buf, &sb) < 0) {
613 if (errno != ENOENT)
614 break;
615 strcpy(buf, ".");
616 if (stat(buf, &sb) < 0)
617 break;
618 }
619
620 fm = NULL;
621 flist_for_each(n, &list) {
622 fm = flist_entry(n, struct fio_mount, list);
623 if (fm->key == sb.st_dev)
624 break;
625
626 fm = NULL;
627 }
628
629 if (fm)
630 continue;
631
632 fm = malloc(sizeof(*fm));
633 strcpy(fm->__base, buf);
634 fm->base = basename(fm->__base);
635 fm->key = sb.st_dev;
636 flist_add(&fm->list, &list);
637 }
638
2e3bd4c2
JA
639 flist_for_each_safe(n, tmp, &list) {
640 unsigned long long sz;
641
642 fm = flist_entry(n, struct fio_mount, list);
643 flist_del(&fm->list);
644
645 sz = get_fs_size(fm->base);
646 if (sz && sz != -1ULL)
647 ret += sz;
648
649 free(fm);
650 }
651
652 return ret;
653}
654
7bb48f84
JA
655/*
656 * Open the files and setup files sizes, creating files if necessary.
657 */
53cdc686
JA
658int setup_files(struct thread_data *td)
659{
7bb48f84 660 unsigned long long total_size, extend_size;
53cdc686 661 struct fio_file *f;
af52b345 662 unsigned int i;
000b0803 663 int err = 0, need_extend;
53cdc686 664
ee56ad50
JA
665 dprint(FD_FILE, "setup files\n");
666
691c8fb0
JA
667 if (td->o.read_iolog_file)
668 return 0;
669
53cdc686
JA
670 /*
671 * if ioengine defines a setup() method, it's responsible for
7bb48f84
JA
672 * opening the files and setting f->real_file_size to indicate
673 * the valid range for that file.
53cdc686
JA
674 */
675 if (td->io_ops->setup)
7bb48f84
JA
676 err = td->io_ops->setup(td);
677 else
bab3fd58 678 err = get_file_sizes(td);
53cdc686 679
f1027063
JA
680 if (err)
681 return err;
682
0a7eb121 683 /*
7bb48f84
JA
684 * check sizes. if the files/devices do not exist and the size
685 * isn't passed to fio, abort.
0a7eb121 686 */
7bb48f84
JA
687 total_size = 0;
688 for_each_file(td, f, i) {
689 if (f->real_file_size == -1ULL)
690 total_size = -1ULL;
691 else
692 total_size += f->real_file_size;
693 }
0a7eb121 694
2e3bd4c2
JA
695 if (td->o.fill_device)
696 td->fill_device_size = get_fs_free_counts(td);
697
7bb48f84
JA
698 /*
699 * device/file sizes are zero and no size given, punt
700 */
1f809d15 701 if ((!total_size || total_size == -1ULL) && !td->o.size &&
aa31f1f1 702 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
7bb48f84 703 log_err("%s: you need to specify size=\n", td->o.name);
e1161c32 704 td_verror(td, EINVAL, "total_file_size");
53cdc686
JA
705 return 1;
706 }
707
7bb48f84
JA
708 /*
709 * now file sizes are known, so we can set ->io_size. if size= is
710 * not given, ->io_size is just equal to ->real_file_size. if size
711 * is given, ->io_size is size / nr_files.
712 */
713 extend_size = total_size = 0;
714 need_extend = 0;
715 for_each_file(td, f, i) {
214ac7e0 716 f->file_offset = td->o.start_offset +
591e9e06 717 (td->thread_number - 1) * td->o.offset_increment;
bcdedd0a 718
7bb48f84
JA
719 if (!td->o.file_size_low) {
720 /*
721 * no file size range given, file size is equal to
722 * total size divided by number of files. if that is
723 * zero, set it to the real file size.
724 */
725 f->io_size = td->o.size / td->o.nr_files;
65bdb10a 726 if (!f->io_size)
273f8c91 727 f->io_size = f->real_file_size - f->file_offset;
7bb48f84
JA
728 } else if (f->real_file_size < td->o.file_size_low ||
729 f->real_file_size > td->o.file_size_high) {
5ec10eaa 730 if (f->file_offset > td->o.file_size_low)
bcdedd0a 731 goto err_offset;
7bb48f84
JA
732 /*
733 * file size given. if it's fixed, use that. if it's a
734 * range, generate a random size in-between.
735 */
5ec10eaa
JA
736 if (td->o.file_size_low == td->o.file_size_high) {
737 f->io_size = td->o.file_size_low
738 - f->file_offset;
739 } else {
740 f->io_size = get_rand_file_size(td)
741 - f->file_offset;
742 }
65bdb10a 743 } else
bcdedd0a 744 f->io_size = f->real_file_size - f->file_offset;
53cdc686 745
7bb48f84
JA
746 if (f->io_size == -1ULL)
747 total_size = -1ULL;
748 else
749 total_size += f->io_size;
750
751 if (f->filetype == FIO_TYPE_FILE &&
bcdedd0a 752 (f->io_size + f->file_offset) > f->real_file_size &&
7bb48f84 753 !(td->io_ops->flags & FIO_DISKLESSIO)) {
814452bd
JA
754 if (!td->o.create_on_open) {
755 need_extend++;
756 extend_size += (f->io_size + f->file_offset);
757 } else
758 f->real_file_size = f->io_size + f->file_offset;
d6aed795 759 fio_file_set_extend(f);
5ec10eaa 760 }
7bb48f84 761 }
53cdc686 762
7bb59102
JA
763 if (td->o.size_percent)
764 total_size = (total_size * td->o.size_percent) / 100;
765
2298290e 766 if (!td->o.size || td->o.size > total_size)
7bb48f84 767 td->o.size = total_size;
21972cde 768
7bb48f84
JA
769 /*
770 * See if we need to extend some files
771 */
772 if (need_extend) {
773 temp_stall_ts = 1;
a7ba8c5f
SSY
774 if (!terse_output)
775 log_info("%s: Laying out IO file(s) (%u file(s) /"
0f2152c1 776 " %lluMB)\n", td->o.name, need_extend,
a7ba8c5f 777 extend_size >> 20);
7bb48f84
JA
778
779 for_each_file(td, f, i) {
5e0074c2 780 unsigned long long old_len = -1ULL, extend_len = -1ULL;
3baddf24 781
d6aed795 782 if (!fio_file_extend(f))
7bb48f84
JA
783 continue;
784
409b3417 785 assert(f->filetype == FIO_TYPE_FILE);
d6aed795 786 fio_file_clear_extend(f);
5e0074c2
JA
787 if (!td->o.fill_device) {
788 old_len = f->real_file_size;
0b9d69ec
JA
789 extend_len = f->io_size + f->file_offset -
790 old_len;
5e0074c2 791 }
bcdedd0a 792 f->real_file_size = (f->io_size + f->file_offset);
7bb48f84
JA
793 err = extend_file(td, f);
794 if (err)
3baddf24 795 break;
5e0074c2 796
3baddf24
JA
797 err = __file_invalidate_cache(td, f, old_len,
798 extend_len);
799 close(f->fd);
800 f->fd = -1;
801 if (err)
7bb48f84
JA
802 break;
803 }
804 temp_stall_ts = 0;
805 }
806
807 if (err)
808 return err;
809
810 if (!td->o.zone_size)
811 td->o.zone_size = td->o.size;
812
ea966f81
JA
813 /*
814 * iolog already set the total io size, if we read back
815 * stored entries.
816 */
817 if (!td->o.read_iolog_file)
818 td->total_io_size = td->o.size * td->o.loops;
7bb48f84 819 return 0;
bcdedd0a
YHJT
820err_offset:
821 log_err("%s: you need to specify valid offset=\n", td->o.name);
822 return 1;
53cdc686
JA
823}
824
afad68f7
ZY
825int pre_read_files(struct thread_data *td)
826{
827 struct fio_file *f;
828 unsigned int i;
829
830 dprint(FD_FILE, "pre_read files\n");
831
832 for_each_file(td, f, i) {
833 pre_read_file(td, f);
834 }
835
836 return 1;
837}
838
68727076
JA
839int init_random_map(struct thread_data *td)
840{
509eab12 841 unsigned long long blocks, num_maps;
68727076
JA
842 struct fio_file *f;
843 unsigned int i;
844
de8dd119 845 if (td->o.norandommap || !td_random(td))
68727076
JA
846 return 0;
847
848 for_each_file(td, f, i) {
5ec10eaa
JA
849 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
850 (unsigned long long) td->o.rw_min_bs;
851 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
852 (unsigned long long) BLOCKS_PER_MAP;
ceadd59e
JA
853 if (num_maps == (unsigned long) num_maps) {
854 f->file_map = smalloc(num_maps * sizeof(unsigned long));
855 if (f->file_map) {
856 f->num_maps = num_maps;
857 continue;
858 }
859 } else
860 f->file_map = NULL;
861
2b386d25 862 if (!td->o.softrandommap) {
5ec10eaa
JA
863 log_err("fio: failed allocating random map. If running"
864 " a large number of jobs, try the 'norandommap'"
2b386d25
JA
865 " option or set 'softrandommap'. Or give"
866 " a larger --alloc-size to fio.\n");
68727076
JA
867 return 1;
868 }
303032ae
JA
869
870 log_info("fio: file %s failed allocating random map. Running "
871 "job without.\n", f->file_name);
872 f->num_maps = 0;
68727076
JA
873 }
874
875 return 0;
876}
877
53cdc686
JA
878void close_files(struct thread_data *td)
879{
0ab8db89 880 struct fio_file *f;
af52b345 881 unsigned int i;
53cdc686 882
2be3eec3
JA
883 for_each_file(td, f, i) {
884 if (fio_file_open(f))
885 td_io_close_file(td, f);
886 }
24ffd2c2
JA
887}
888
889void close_and_free_files(struct thread_data *td)
890{
891 struct fio_file *f;
892 unsigned int i;
893
ee56ad50
JA
894 dprint(FD_FILE, "close files\n");
895
0ab8db89 896 for_each_file(td, f, i) {
ffdfabd4
JA
897 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
898 dprint(FD_FILE, "free unlink %s\n", f->file_name);
132ad46d 899 unlink(f->file_name);
ffdfabd4 900 }
bdb4e2e9 901
22a57ba8
JA
902 if (fio_file_open(f))
903 td_io_close_file(td, f);
904
b9fbcf21 905 remove_file_hash(f);
b3dc7f07 906
f17c4392 907 sfree(f->file_name);
fa1da865 908 f->file_name = NULL;
61eb313e
JA
909 sfree(f->file_map);
910 f->file_map = NULL;
78d99e6a 911 sfree(f);
53cdc686 912 }
b4a6a59a 913
2dc1bbeb 914 td->o.filename = NULL;
cade3ef4 915 free(td->files);
9efef3c4 916 td->files_index = 0;
b4a6a59a 917 td->files = NULL;
2dc1bbeb 918 td->o.nr_files = 0;
53cdc686 919}
af52b345 920
e3bab463 921static void get_file_type(struct fio_file *f)
af52b345
JA
922{
923 struct stat sb;
924
66159828
JA
925 if (!strcmp(f->file_name, "-"))
926 f->filetype = FIO_TYPE_PIPE;
927 else
928 f->filetype = FIO_TYPE_FILE;
af52b345 929
3892182a
BC
930 /* \\.\ is the device namespace in Windows, where every file is
931 * a block device */
932 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
933 f->filetype = FIO_TYPE_BD;
934
b30d395e 935 if (!stat(f->file_name, &sb)) {
3892182a 936 if (S_ISBLK(sb.st_mode))
af52b345
JA
937 f->filetype = FIO_TYPE_BD;
938 else if (S_ISCHR(sb.st_mode))
939 f->filetype = FIO_TYPE_CHAR;
b5605e9d
JA
940 else if (S_ISFIFO(sb.st_mode))
941 f->filetype = FIO_TYPE_PIPE;
af52b345
JA
942 }
943}
944
f29b25a3 945int add_file(struct thread_data *td, const char *fname)
af52b345 946{
7b4e4fe5 947 int cur_files = td->files_index;
bd0ee748 948 char file_name[PATH_MAX];
af52b345 949 struct fio_file *f;
bd0ee748 950 int len = 0;
af52b345 951
ee56ad50
JA
952 dprint(FD_FILE, "add file %s\n", fname);
953
f17c4392 954 f = smalloc(sizeof(*f));
c48c0be7
JA
955 if (!f) {
956 log_err("fio: smalloc OOM\n");
957 assert(0);
958 }
0b9d69ec 959
af52b345 960 f->fd = -1;
38dad62d 961 fio_file_reset(f);
bd0ee748 962
fc99bc0d 963 if (td->files_size <= td->files_index) {
4b341fca 964 int new_size = td->o.nr_files + 1;
126d65c6 965
fc99bc0d
JA
966 dprint(FD_FILE, "resize file array to %d files\n", new_size);
967
968 td->files = realloc(td->files, new_size * sizeof(f));
fc99bc0d
JA
969 td->files_size = new_size;
970 }
8bb7679e 971 td->files[cur_files] = f;
126d65c6 972
07eb79df
JA
973 /*
974 * init function, io engine may not be loaded yet
975 */
976 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
977 f->real_file_size = -1ULL;
978
bd0ee748
JA
979 if (td->o.directory)
980 len = sprintf(file_name, "%s/", td->o.directory);
981
982 sprintf(file_name + len, "%s", fname);
f17c4392 983 f->file_name = smalloc_strdup(file_name);
c48c0be7
JA
984 if (!f->file_name) {
985 log_err("fio: smalloc OOM\n");
986 assert(0);
987 }
0b9d69ec 988
e3bab463 989 get_file_type(f);
af52b345 990
4d4e80f2
JA
991 switch (td->o.file_lock_mode) {
992 case FILE_LOCK_NONE:
993 break;
994 case FILE_LOCK_READWRITE:
995 f->lock = fio_mutex_rw_init();
996 break;
997 case FILE_LOCK_EXCLUSIVE:
998 f->lock = fio_mutex_init(1);
999 break;
1000 default:
1001 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1002 assert(0);
1003 }
29c1349f 1004
7b4e4fe5 1005 td->files_index++;
1549441c
JA
1006 if (f->filetype == FIO_TYPE_FILE)
1007 td->nr_normal_files++;
f29b25a3 1008
5ec10eaa
JA
1009 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1010 cur_files);
9efef3c4 1011
f29b25a3 1012 return cur_files;
af52b345 1013}
0ad920e7 1014
49ffb4a2
JA
1015int add_file_exclusive(struct thread_data *td, const char *fname)
1016{
1017 struct fio_file *f;
1018 unsigned int i;
1019
1020 for_each_file(td, f, i) {
1021 if (!strcmp(f->file_name, fname))
1022 return i;
1023 }
1024
1025 return add_file(td, fname);
1026}
1027
0ad920e7
JA
1028void get_file(struct fio_file *f)
1029{
8172fe97 1030 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
d6aed795 1031 assert(fio_file_open(f));
0ad920e7
JA
1032 f->references++;
1033}
1034
6977bcd0 1035int put_file(struct thread_data *td, struct fio_file *f)
0ad920e7 1036{
98e1ac4e 1037 int f_ret = 0, ret = 0;
6977bcd0 1038
8172fe97 1039 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
ee56ad50 1040
22a57ba8
JA
1041 if (!fio_file_open(f)) {
1042 assert(f->fd == -1);
6977bcd0 1043 return 0;
22a57ba8 1044 }
0ad920e7
JA
1045
1046 assert(f->references);
1047 if (--f->references)
6977bcd0 1048 return 0;
0ad920e7 1049
d424d4dd 1050 if (should_fsync(td) && td->o.fsync_on_close)
98e1ac4e 1051 f_ret = fsync(f->fd);
ebb1415f 1052
0ad920e7 1053 if (td->io_ops->close_file)
6977bcd0 1054 ret = td->io_ops->close_file(td, f);
1020a139 1055
98e1ac4e 1056 if (!ret)
a5fb461f 1057 ret = f_ret;
98e1ac4e 1058
0ad920e7 1059 td->nr_open_files--;
d6aed795 1060 fio_file_clear_open(f);
22a57ba8 1061 assert(f->fd == -1);
6977bcd0 1062 return ret;
0ad920e7 1063}
bbf6b540 1064
4d4e80f2 1065void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
b2bd2bd9 1066{
4d4e80f2
JA
1067 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1068 return;
29c1349f 1069
4d4e80f2
JA
1070 if (f->lock_owner == td && f->lock_batch--)
1071 return;
1072
1073 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1074 if (ddir == DDIR_READ)
1075 fio_mutex_down_read(f->lock);
1076 else
1077 fio_mutex_down_write(f->lock);
1078 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1079 fio_mutex_down(f->lock);
1080
1081 f->lock_owner = td;
1082 f->lock_batch = td->o.lockfile_batch;
1083 f->lock_ddir = ddir;
b2bd2bd9
JA
1084}
1085
4d4e80f2 1086void unlock_file(struct thread_data *td, struct fio_file *f)
b2bd2bd9 1087{
4d4e80f2
JA
1088 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1089 return;
1090 if (f->lock_batch)
1091 return;
1092
1093 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1094 const int is_read = f->lock_ddir == DDIR_READ;
1095 int val = fio_mutex_getval(f->lock);
29c1349f 1096
4d4e80f2
JA
1097 if ((is_read && val == 1) || (!is_read && val == -1))
1098 f->lock_owner = NULL;
29c1349f 1099
4d4e80f2
JA
1100 if (is_read)
1101 fio_mutex_up_read(f->lock);
1102 else
1103 fio_mutex_up_write(f->lock);
1104 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
1105 int val = fio_mutex_getval(f->lock);
1106
1107 if (val == 0)
1108 f->lock_owner = NULL;
1109
1110 fio_mutex_up(f->lock);
29c1349f 1111 }
b2bd2bd9
JA
1112}
1113
4d4e80f2
JA
1114void unlock_file_all(struct thread_data *td, struct fio_file *f)
1115{
1116 if (f->lock_owner != td)
1117 return;
1118
1119 f->lock_batch = 0;
1120 unlock_file(td, f);
1121}
1122
bbf6b540
JA
1123static int recurse_dir(struct thread_data *td, const char *dirname)
1124{
1125 struct dirent *dir;
1126 int ret = 0;
1127 DIR *D;
1128
1129 D = opendir(dirname);
1130 if (!D) {
0ddb270c
JA
1131 char buf[FIO_VERROR_SIZE];
1132
1133 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
1134 td_verror(td, errno, buf);
bbf6b540
JA
1135 return 1;
1136 }
1137
1138 while ((dir = readdir(D)) != NULL) {
1139 char full_path[PATH_MAX];
1140 struct stat sb;
1141
e85b2b83
JA
1142 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1143 continue;
96d32d51 1144
b9fd788f 1145 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
bbf6b540
JA
1146
1147 if (lstat(full_path, &sb) == -1) {
1148 if (errno != ENOENT) {
1149 td_verror(td, errno, "stat");
1150 return 1;
1151 }
1152 }
1153
1154 if (S_ISREG(sb.st_mode)) {
1155 add_file(td, full_path);
2dc1bbeb 1156 td->o.nr_files++;
bbf6b540
JA
1157 continue;
1158 }
0ddb270c
JA
1159 if (!S_ISDIR(sb.st_mode))
1160 continue;
bbf6b540 1161
5ec10eaa
JA
1162 ret = recurse_dir(td, full_path);
1163 if (ret)
bbf6b540
JA
1164 break;
1165 }
1166
1167 closedir(D);
1168 return ret;
1169}
1170
1171int add_dir_files(struct thread_data *td, const char *path)
1172{
0ddb270c
JA
1173 int ret = recurse_dir(td, path);
1174
1175 if (!ret)
1176 log_info("fio: opendir added %d files\n", td->o.nr_files);
1177
1178 return ret;
bbf6b540 1179}
cade3ef4
JA
1180
1181void dup_files(struct thread_data *td, struct thread_data *org)
1182{
1183 struct fio_file *f;
1184 unsigned int i;
9efef3c4
JA
1185
1186 dprint(FD_FILE, "dup files: %d\n", org->files_index);
cade3ef4
JA
1187
1188 if (!org->files)
1189 return;
1190
9efef3c4 1191 td->files = malloc(org->files_index * sizeof(f));
cade3ef4 1192
9efef3c4 1193 for_each_file(org, f, i) {
b0fe421a
JA
1194 struct fio_file *__f;
1195
f17c4392 1196 __f = smalloc(sizeof(*__f));
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1197 if (!__f) {
1198 log_err("fio: smalloc OOM\n");
1199 assert(0);
1200 }
22a57ba8 1201 __f->fd = -1;
38dad62d 1202 fio_file_reset(__f);
0b9d69ec 1203
bc3456fa 1204 if (f->file_name) {
f17c4392 1205 __f->file_name = smalloc_strdup(f->file_name);
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1206 if (!__f->file_name) {
1207 log_err("fio: smalloc OOM\n");
1208 assert(0);
1209 }
0b9d69ec 1210
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1211 __f->filetype = f->filetype;
1212 }
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1213
1214 td->files[i] = __f;
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1215 }
1216}
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1217
1218/*
1219 * Returns the index that matches the filename, or -1 if not there
1220 */
1221int get_fileno(struct thread_data *td, const char *fname)
1222{
1223 struct fio_file *f;
1224 unsigned int i;
1225
1226 for_each_file(td, f, i)
1227 if (!strcmp(f->file_name, fname))
1228 return i;
1229
1230 return -1;
1231}
1232
1233/*
1234 * For log usage, where we add/open/close files automatically
1235 */
1236void free_release_files(struct thread_data *td)
1237{
1238 close_files(td);
1239 td->files_index = 0;
1240 td->nr_normal_files = 0;
1241}