export file_lookup_open
[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
1ccc6dc7 438int 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
6eaf09d6
SL
471 if (td_trim(td) && f->filetype != FIO_TYPE_BD) {
472 log_err("fio: trim only applies to block device\n");
473 return 1;
474 }
475
66159828
JA
476 if (!strcmp(f->file_name, "-")) {
477 if (td_rw(td)) {
478 log_err("fio: can't read/write to stdin/out\n");
479 return 1;
480 }
481 is_std = 1;
ce98fa66
JA
482
483 /*
484 * move output logging to stderr, if we are writing to stdout
485 */
486 if (td_write(td))
487 f_out = stderr;
66159828
JA
488 }
489
6eaf09d6
SL
490 if (td_trim(td))
491 goto skip_flags;
2dc1bbeb 492 if (td->o.odirect)
2fd233b7 493 flags |= OS_O_DIRECT;
2dc1bbeb 494 if (td->o.sync_io)
2fd233b7 495 flags |= O_SYNC;
814452bd
JA
496 if (td->o.create_on_open)
497 flags |= O_CREAT;
6eaf09d6
SL
498skip_flags:
499 if (f->filetype != FIO_TYPE_FILE)
500 flags |= FIO_O_NOATIME;
53cdc686 501
056f3459 502open_again:
660a1cb5 503 if (td_write(td)) {
17308158
JA
504 if (!read_only)
505 flags |= O_RDWR;
53cdc686 506
af52b345 507 if (f->filetype == FIO_TYPE_FILE)
2fd233b7 508 flags |= O_CREAT;
2fd233b7 509
66159828
JA
510 if (is_std)
511 f->fd = dup(STDOUT_FILENO);
4d4e80f2
JA
512 else
513 from_hash = file_lookup_open(f, flags);
6eaf09d6 514 } else if (td_read(td)) {
4241ea8f 515 if (f->filetype == FIO_TYPE_CHAR && !read_only)
2fd233b7
JA
516 flags |= O_RDWR;
517 else
518 flags |= O_RDONLY;
519
66159828
JA
520 if (is_std)
521 f->fd = dup(STDIN_FILENO);
4d4e80f2
JA
522 else
523 from_hash = file_lookup_open(f, flags);
6eaf09d6
SL
524 } else { //td trim
525 flags |= O_RDWR;
526 from_hash = file_lookup_open(f, flags);
53cdc686
JA
527 }
528
529 if (f->fd == -1) {
e4e33258 530 char buf[FIO_VERROR_SIZE];
e1161c32
JA
531 int __e = errno;
532
835d9b9e 533 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
5921e80c 534 flags &= ~FIO_O_NOATIME;
056f3459
AC
535 goto open_again;
536 }
537
e8670ef8 538 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
e4e33258 539
a93c5f04
JA
540 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
541 log_err("fio: looks like your file system does not " \
542 "support direct=1/buffered=0\n");
543 }
544
e4e33258 545 td_verror(td, __e, buf);
53cdc686
JA
546 }
547
29c1349f
JA
548 if (!from_hash && f->fd != -1) {
549 if (add_file_hash(f)) {
3f0ca9b9 550 int fio_unused ret;
29c1349f
JA
551
552 /*
553 * OK to ignore, we haven't done anything with it
554 */
555 ret = generic_close_file(td, f);
556 goto open_again;
557 }
558 }
4906e0b5 559
53cdc686 560 return 0;
b5af8293
JA
561}
562
df9c26b1 563int generic_get_file_size(struct thread_data *td, struct fio_file *f)
21972cde 564{
df9c26b1 565 return get_file_size(td, f);
21972cde
JA
566}
567
7bb48f84
JA
568/*
569 * open/close all files, so that ->real_file_size gets set
570 */
bab3fd58 571static int get_file_sizes(struct thread_data *td)
7bb48f84
JA
572{
573 struct fio_file *f;
574 unsigned int i;
bab3fd58 575 int err = 0;
7bb48f84
JA
576
577 for_each_file(td, f, i) {
5ec10eaa
JA
578 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
579 f->file_name);
9efef3c4 580
99a47c69 581 if (td_io_get_file_size(td, f)) {
40b44f4a
JA
582 if (td->error != ENOENT) {
583 log_err("%s\n", td->verror);
584 err = 1;
585 }
541d66d7 586 clear_error(td);
07eb79df 587 }
409b3417
JA
588
589 if (f->real_file_size == -1ULL && td->o.size)
590 f->real_file_size = td->o.size / td->o.nr_files;
7bb48f84 591 }
bab3fd58
JA
592
593 return err;
7bb48f84
JA
594}
595
2e3bd4c2
JA
596struct fio_mount {
597 struct flist_head list;
598 const char *base;
599 char __base[256];
600 unsigned int key;
601};
602
603/*
604 * Get free number of bytes for each file on each unique mount.
605 */
606static unsigned long long get_fs_free_counts(struct thread_data *td)
607{
608 struct flist_head *n, *tmp;
68b0316f 609 unsigned long long ret = 0;
2e3bd4c2
JA
610 struct fio_mount *fm;
611 FLIST_HEAD(list);
612 struct fio_file *f;
613 unsigned int i;
614
615 for_each_file(td, f, i) {
616 struct stat sb;
617 char buf[256];
618
4ccdccd1
JA
619 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
620 if (f->real_file_size != -1ULL)
621 ret += f->real_file_size;
68b0316f
JA
622 continue;
623 } else if (f->filetype != FIO_TYPE_FILE)
624 continue;
625
2e3bd4c2
JA
626 strcpy(buf, f->file_name);
627
628 if (stat(buf, &sb) < 0) {
629 if (errno != ENOENT)
630 break;
631 strcpy(buf, ".");
632 if (stat(buf, &sb) < 0)
633 break;
634 }
635
636 fm = NULL;
637 flist_for_each(n, &list) {
638 fm = flist_entry(n, struct fio_mount, list);
639 if (fm->key == sb.st_dev)
640 break;
641
642 fm = NULL;
643 }
644
645 if (fm)
646 continue;
647
648 fm = malloc(sizeof(*fm));
649 strcpy(fm->__base, buf);
650 fm->base = basename(fm->__base);
651 fm->key = sb.st_dev;
652 flist_add(&fm->list, &list);
653 }
654
2e3bd4c2
JA
655 flist_for_each_safe(n, tmp, &list) {
656 unsigned long long sz;
657
658 fm = flist_entry(n, struct fio_mount, list);
659 flist_del(&fm->list);
660
661 sz = get_fs_size(fm->base);
662 if (sz && sz != -1ULL)
663 ret += sz;
664
665 free(fm);
666 }
667
668 return ret;
669}
670
ce95d651
DE
671unsigned long long get_start_offset(struct thread_data *td)
672{
673 return td->o.start_offset +
674 (td->thread_number - 1) * td->o.offset_increment;
675}
676
7bb48f84
JA
677/*
678 * Open the files and setup files sizes, creating files if necessary.
679 */
53cdc686
JA
680int setup_files(struct thread_data *td)
681{
7bb48f84 682 unsigned long long total_size, extend_size;
53cdc686 683 struct fio_file *f;
af52b345 684 unsigned int i;
000b0803 685 int err = 0, need_extend;
53cdc686 686
ee56ad50
JA
687 dprint(FD_FILE, "setup files\n");
688
691c8fb0 689 if (td->o.read_iolog_file)
25460cf6 690 goto done;
691c8fb0 691
53cdc686
JA
692 /*
693 * if ioengine defines a setup() method, it's responsible for
7bb48f84
JA
694 * opening the files and setting f->real_file_size to indicate
695 * the valid range for that file.
53cdc686
JA
696 */
697 if (td->io_ops->setup)
7bb48f84
JA
698 err = td->io_ops->setup(td);
699 else
bab3fd58 700 err = get_file_sizes(td);
53cdc686 701
f1027063
JA
702 if (err)
703 return err;
704
0a7eb121 705 /*
7bb48f84
JA
706 * check sizes. if the files/devices do not exist and the size
707 * isn't passed to fio, abort.
0a7eb121 708 */
7bb48f84
JA
709 total_size = 0;
710 for_each_file(td, f, i) {
711 if (f->real_file_size == -1ULL)
712 total_size = -1ULL;
713 else
714 total_size += f->real_file_size;
715 }
0a7eb121 716
2e3bd4c2
JA
717 if (td->o.fill_device)
718 td->fill_device_size = get_fs_free_counts(td);
719
7bb48f84
JA
720 /*
721 * device/file sizes are zero and no size given, punt
722 */
1f809d15 723 if ((!total_size || total_size == -1ULL) && !td->o.size &&
aa31f1f1 724 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
7bb48f84 725 log_err("%s: you need to specify size=\n", td->o.name);
e1161c32 726 td_verror(td, EINVAL, "total_file_size");
53cdc686
JA
727 return 1;
728 }
729
7bb48f84
JA
730 /*
731 * now file sizes are known, so we can set ->io_size. if size= is
732 * not given, ->io_size is just equal to ->real_file_size. if size
733 * is given, ->io_size is size / nr_files.
734 */
735 extend_size = total_size = 0;
736 need_extend = 0;
737 for_each_file(td, f, i) {
ce95d651 738 f->file_offset = get_start_offset(td);
bcdedd0a 739
7bb48f84
JA
740 if (!td->o.file_size_low) {
741 /*
742 * no file size range given, file size is equal to
743 * total size divided by number of files. if that is
744 * zero, set it to the real file size.
745 */
746 f->io_size = td->o.size / td->o.nr_files;
65bdb10a 747 if (!f->io_size)
273f8c91 748 f->io_size = f->real_file_size - f->file_offset;
7bb48f84
JA
749 } else if (f->real_file_size < td->o.file_size_low ||
750 f->real_file_size > td->o.file_size_high) {
5ec10eaa 751 if (f->file_offset > td->o.file_size_low)
bcdedd0a 752 goto err_offset;
7bb48f84
JA
753 /*
754 * file size given. if it's fixed, use that. if it's a
755 * range, generate a random size in-between.
756 */
5ec10eaa
JA
757 if (td->o.file_size_low == td->o.file_size_high) {
758 f->io_size = td->o.file_size_low
759 - f->file_offset;
760 } else {
761 f->io_size = get_rand_file_size(td)
762 - f->file_offset;
763 }
65bdb10a 764 } else
bcdedd0a 765 f->io_size = f->real_file_size - f->file_offset;
53cdc686 766
7bb48f84
JA
767 if (f->io_size == -1ULL)
768 total_size = -1ULL;
769 else
770 total_size += f->io_size;
771
772 if (f->filetype == FIO_TYPE_FILE &&
bcdedd0a 773 (f->io_size + f->file_offset) > f->real_file_size &&
7bb48f84 774 !(td->io_ops->flags & FIO_DISKLESSIO)) {
814452bd
JA
775 if (!td->o.create_on_open) {
776 need_extend++;
777 extend_size += (f->io_size + f->file_offset);
778 } else
779 f->real_file_size = f->io_size + f->file_offset;
d6aed795 780 fio_file_set_extend(f);
5ec10eaa 781 }
7bb48f84 782 }
53cdc686 783
7bb59102
JA
784 if (td->o.size_percent)
785 total_size = (total_size * td->o.size_percent) / 100;
786
2298290e 787 if (!td->o.size || td->o.size > total_size)
7bb48f84 788 td->o.size = total_size;
21972cde 789
7bb48f84
JA
790 /*
791 * See if we need to extend some files
792 */
793 if (need_extend) {
794 temp_stall_ts = 1;
f3afa57e 795 if (output_format == FIO_OUTPUT_NORMAL)
a7ba8c5f 796 log_info("%s: Laying out IO file(s) (%u file(s) /"
0f2152c1 797 " %lluMB)\n", td->o.name, need_extend,
a7ba8c5f 798 extend_size >> 20);
7bb48f84
JA
799
800 for_each_file(td, f, i) {
5e0074c2 801 unsigned long long old_len = -1ULL, extend_len = -1ULL;
3baddf24 802
d6aed795 803 if (!fio_file_extend(f))
7bb48f84
JA
804 continue;
805
409b3417 806 assert(f->filetype == FIO_TYPE_FILE);
d6aed795 807 fio_file_clear_extend(f);
5e0074c2
JA
808 if (!td->o.fill_device) {
809 old_len = f->real_file_size;
0b9d69ec
JA
810 extend_len = f->io_size + f->file_offset -
811 old_len;
5e0074c2 812 }
bcdedd0a 813 f->real_file_size = (f->io_size + f->file_offset);
7bb48f84
JA
814 err = extend_file(td, f);
815 if (err)
3baddf24 816 break;
5e0074c2 817
3baddf24
JA
818 err = __file_invalidate_cache(td, f, old_len,
819 extend_len);
820 close(f->fd);
821 f->fd = -1;
822 if (err)
7bb48f84
JA
823 break;
824 }
825 temp_stall_ts = 0;
826 }
827
828 if (err)
829 return err;
830
831 if (!td->o.zone_size)
832 td->o.zone_size = td->o.size;
833
ea966f81
JA
834 /*
835 * iolog already set the total io size, if we read back
836 * stored entries.
837 */
838 if (!td->o.read_iolog_file)
839 td->total_io_size = td->o.size * td->o.loops;
25460cf6
JA
840
841done:
842 if (td->o.create_only)
843 td->done = 1;
844
7bb48f84 845 return 0;
bcdedd0a
YHJT
846err_offset:
847 log_err("%s: you need to specify valid offset=\n", td->o.name);
848 return 1;
53cdc686
JA
849}
850
afad68f7
ZY
851int pre_read_files(struct thread_data *td)
852{
853 struct fio_file *f;
854 unsigned int i;
855
856 dprint(FD_FILE, "pre_read files\n");
857
858 for_each_file(td, f, i) {
859 pre_read_file(td, f);
860 }
861
862 return 1;
863}
864
68727076
JA
865int init_random_map(struct thread_data *td)
866{
509eab12 867 unsigned long long blocks, num_maps;
68727076
JA
868 struct fio_file *f;
869 unsigned int i;
870
de8dd119 871 if (td->o.norandommap || !td_random(td))
68727076
JA
872 return 0;
873
874 for_each_file(td, f, i) {
5ec10eaa
JA
875 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
876 (unsigned long long) td->o.rw_min_bs;
877 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
878 (unsigned long long) BLOCKS_PER_MAP;
ceadd59e
JA
879 if (num_maps == (unsigned long) num_maps) {
880 f->file_map = smalloc(num_maps * sizeof(unsigned long));
881 if (f->file_map) {
882 f->num_maps = num_maps;
883 continue;
884 }
885 } else
886 f->file_map = NULL;
887
2b386d25 888 if (!td->o.softrandommap) {
5ec10eaa
JA
889 log_err("fio: failed allocating random map. If running"
890 " a large number of jobs, try the 'norandommap'"
2b386d25
JA
891 " option or set 'softrandommap'. Or give"
892 " a larger --alloc-size to fio.\n");
68727076
JA
893 return 1;
894 }
303032ae
JA
895
896 log_info("fio: file %s failed allocating random map. Running "
897 "job without.\n", f->file_name);
898 f->num_maps = 0;
68727076
JA
899 }
900
901 return 0;
902}
903
53cdc686
JA
904void close_files(struct thread_data *td)
905{
0ab8db89 906 struct fio_file *f;
af52b345 907 unsigned int i;
53cdc686 908
2be3eec3
JA
909 for_each_file(td, f, i) {
910 if (fio_file_open(f))
911 td_io_close_file(td, f);
912 }
24ffd2c2
JA
913}
914
915void close_and_free_files(struct thread_data *td)
916{
917 struct fio_file *f;
918 unsigned int i;
919
ee56ad50
JA
920 dprint(FD_FILE, "close files\n");
921
0ab8db89 922 for_each_file(td, f, i) {
ffdfabd4
JA
923 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
924 dprint(FD_FILE, "free unlink %s\n", f->file_name);
132ad46d 925 unlink(f->file_name);
ffdfabd4 926 }
bdb4e2e9 927
22a57ba8
JA
928 if (fio_file_open(f))
929 td_io_close_file(td, f);
930
b9fbcf21 931 remove_file_hash(f);
b3dc7f07 932
f17c4392 933 sfree(f->file_name);
fa1da865 934 f->file_name = NULL;
61eb313e
JA
935 sfree(f->file_map);
936 f->file_map = NULL;
78d99e6a 937 sfree(f);
53cdc686 938 }
b4a6a59a 939
2dc1bbeb 940 td->o.filename = NULL;
cade3ef4 941 free(td->files);
9efef3c4 942 td->files_index = 0;
b4a6a59a 943 td->files = NULL;
2dc1bbeb 944 td->o.nr_files = 0;
53cdc686 945}
af52b345 946
e3bab463 947static void get_file_type(struct fio_file *f)
af52b345
JA
948{
949 struct stat sb;
950
66159828
JA
951 if (!strcmp(f->file_name, "-"))
952 f->filetype = FIO_TYPE_PIPE;
953 else
954 f->filetype = FIO_TYPE_FILE;
af52b345 955
3892182a
BC
956 /* \\.\ is the device namespace in Windows, where every file is
957 * a block device */
958 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
959 f->filetype = FIO_TYPE_BD;
960
b30d395e 961 if (!stat(f->file_name, &sb)) {
3892182a 962 if (S_ISBLK(sb.st_mode))
af52b345
JA
963 f->filetype = FIO_TYPE_BD;
964 else if (S_ISCHR(sb.st_mode))
965 f->filetype = FIO_TYPE_CHAR;
b5605e9d
JA
966 else if (S_ISFIFO(sb.st_mode))
967 f->filetype = FIO_TYPE_PIPE;
af52b345
JA
968 }
969}
970
f29b25a3 971int add_file(struct thread_data *td, const char *fname)
af52b345 972{
7b4e4fe5 973 int cur_files = td->files_index;
bd0ee748 974 char file_name[PATH_MAX];
af52b345 975 struct fio_file *f;
bd0ee748 976 int len = 0;
af52b345 977
ee56ad50
JA
978 dprint(FD_FILE, "add file %s\n", fname);
979
f17c4392 980 f = smalloc(sizeof(*f));
c48c0be7
JA
981 if (!f) {
982 log_err("fio: smalloc OOM\n");
983 assert(0);
984 }
0b9d69ec 985
af52b345 986 f->fd = -1;
38dad62d 987 fio_file_reset(f);
bd0ee748 988
fc99bc0d 989 if (td->files_size <= td->files_index) {
4b341fca 990 int new_size = td->o.nr_files + 1;
126d65c6 991
fc99bc0d
JA
992 dprint(FD_FILE, "resize file array to %d files\n", new_size);
993
994 td->files = realloc(td->files, new_size * sizeof(f));
fc99bc0d
JA
995 td->files_size = new_size;
996 }
8bb7679e 997 td->files[cur_files] = f;
89ac1d48 998 f->fileno = cur_files;
126d65c6 999
07eb79df
JA
1000 /*
1001 * init function, io engine may not be loaded yet
1002 */
1003 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1004 f->real_file_size = -1ULL;
1005
bd0ee748
JA
1006 if (td->o.directory)
1007 len = sprintf(file_name, "%s/", td->o.directory);
1008
1009 sprintf(file_name + len, "%s", fname);
f17c4392 1010 f->file_name = smalloc_strdup(file_name);
c48c0be7
JA
1011 if (!f->file_name) {
1012 log_err("fio: smalloc OOM\n");
1013 assert(0);
1014 }
0b9d69ec 1015
e3bab463 1016 get_file_type(f);
af52b345 1017
4d4e80f2
JA
1018 switch (td->o.file_lock_mode) {
1019 case FILE_LOCK_NONE:
1020 break;
1021 case FILE_LOCK_READWRITE:
1022 f->lock = fio_mutex_rw_init();
1023 break;
1024 case FILE_LOCK_EXCLUSIVE:
521da527 1025 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
4d4e80f2
JA
1026 break;
1027 default:
1028 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1029 assert(0);
1030 }
29c1349f 1031
7b4e4fe5 1032 td->files_index++;
1549441c
JA
1033 if (f->filetype == FIO_TYPE_FILE)
1034 td->nr_normal_files++;
f29b25a3 1035
5ec10eaa
JA
1036 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1037 cur_files);
9efef3c4 1038
f29b25a3 1039 return cur_files;
af52b345 1040}
0ad920e7 1041
49ffb4a2
JA
1042int add_file_exclusive(struct thread_data *td, const char *fname)
1043{
1044 struct fio_file *f;
1045 unsigned int i;
1046
1047 for_each_file(td, f, i) {
1048 if (!strcmp(f->file_name, fname))
1049 return i;
1050 }
1051
1052 return add_file(td, fname);
1053}
1054
0ad920e7
JA
1055void get_file(struct fio_file *f)
1056{
8172fe97 1057 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
d6aed795 1058 assert(fio_file_open(f));
0ad920e7
JA
1059 f->references++;
1060}
1061
6977bcd0 1062int put_file(struct thread_data *td, struct fio_file *f)
0ad920e7 1063{
98e1ac4e 1064 int f_ret = 0, ret = 0;
6977bcd0 1065
8172fe97 1066 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
ee56ad50 1067
22a57ba8
JA
1068 if (!fio_file_open(f)) {
1069 assert(f->fd == -1);
6977bcd0 1070 return 0;
22a57ba8 1071 }
0ad920e7
JA
1072
1073 assert(f->references);
1074 if (--f->references)
6977bcd0 1075 return 0;
0ad920e7 1076
d424d4dd 1077 if (should_fsync(td) && td->o.fsync_on_close)
98e1ac4e 1078 f_ret = fsync(f->fd);
ebb1415f 1079
0ad920e7 1080 if (td->io_ops->close_file)
6977bcd0 1081 ret = td->io_ops->close_file(td, f);
1020a139 1082
98e1ac4e 1083 if (!ret)
a5fb461f 1084 ret = f_ret;
98e1ac4e 1085
0ad920e7 1086 td->nr_open_files--;
d6aed795 1087 fio_file_clear_open(f);
22a57ba8 1088 assert(f->fd == -1);
6977bcd0 1089 return ret;
0ad920e7 1090}
bbf6b540 1091
4d4e80f2 1092void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
b2bd2bd9 1093{
4d4e80f2
JA
1094 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1095 return;
29c1349f 1096
4d4e80f2
JA
1097 if (f->lock_owner == td && f->lock_batch--)
1098 return;
1099
1100 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1101 if (ddir == DDIR_READ)
1102 fio_mutex_down_read(f->lock);
1103 else
1104 fio_mutex_down_write(f->lock);
1105 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1106 fio_mutex_down(f->lock);
1107
1108 f->lock_owner = td;
1109 f->lock_batch = td->o.lockfile_batch;
1110 f->lock_ddir = ddir;
b2bd2bd9
JA
1111}
1112
4d4e80f2 1113void unlock_file(struct thread_data *td, struct fio_file *f)
b2bd2bd9 1114{
4d4e80f2
JA
1115 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1116 return;
1117 if (f->lock_batch)
1118 return;
1119
1120 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1121 const int is_read = f->lock_ddir == DDIR_READ;
1122 int val = fio_mutex_getval(f->lock);
29c1349f 1123
4d4e80f2
JA
1124 if ((is_read && val == 1) || (!is_read && val == -1))
1125 f->lock_owner = NULL;
29c1349f 1126
4d4e80f2
JA
1127 if (is_read)
1128 fio_mutex_up_read(f->lock);
1129 else
1130 fio_mutex_up_write(f->lock);
1131 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
1132 int val = fio_mutex_getval(f->lock);
1133
1134 if (val == 0)
1135 f->lock_owner = NULL;
1136
1137 fio_mutex_up(f->lock);
29c1349f 1138 }
b2bd2bd9
JA
1139}
1140
4d4e80f2
JA
1141void unlock_file_all(struct thread_data *td, struct fio_file *f)
1142{
1143 if (f->lock_owner != td)
1144 return;
1145
1146 f->lock_batch = 0;
1147 unlock_file(td, f);
1148}
1149
bbf6b540
JA
1150static int recurse_dir(struct thread_data *td, const char *dirname)
1151{
1152 struct dirent *dir;
1153 int ret = 0;
1154 DIR *D;
1155
1156 D = opendir(dirname);
1157 if (!D) {
0ddb270c
JA
1158 char buf[FIO_VERROR_SIZE];
1159
1160 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
1161 td_verror(td, errno, buf);
bbf6b540
JA
1162 return 1;
1163 }
1164
1165 while ((dir = readdir(D)) != NULL) {
1166 char full_path[PATH_MAX];
1167 struct stat sb;
1168
e85b2b83
JA
1169 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1170 continue;
96d32d51 1171
b9fd788f 1172 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
bbf6b540
JA
1173
1174 if (lstat(full_path, &sb) == -1) {
1175 if (errno != ENOENT) {
1176 td_verror(td, errno, "stat");
1177 return 1;
1178 }
1179 }
1180
1181 if (S_ISREG(sb.st_mode)) {
1182 add_file(td, full_path);
2dc1bbeb 1183 td->o.nr_files++;
bbf6b540
JA
1184 continue;
1185 }
0ddb270c
JA
1186 if (!S_ISDIR(sb.st_mode))
1187 continue;
bbf6b540 1188
5ec10eaa
JA
1189 ret = recurse_dir(td, full_path);
1190 if (ret)
bbf6b540
JA
1191 break;
1192 }
1193
1194 closedir(D);
1195 return ret;
1196}
1197
1198int add_dir_files(struct thread_data *td, const char *path)
1199{
0ddb270c
JA
1200 int ret = recurse_dir(td, path);
1201
1202 if (!ret)
1203 log_info("fio: opendir added %d files\n", td->o.nr_files);
1204
1205 return ret;
bbf6b540 1206}
cade3ef4
JA
1207
1208void dup_files(struct thread_data *td, struct thread_data *org)
1209{
1210 struct fio_file *f;
1211 unsigned int i;
9efef3c4
JA
1212
1213 dprint(FD_FILE, "dup files: %d\n", org->files_index);
cade3ef4
JA
1214
1215 if (!org->files)
1216 return;
1217
9efef3c4 1218 td->files = malloc(org->files_index * sizeof(f));
cade3ef4 1219
9efef3c4 1220 for_each_file(org, f, i) {
b0fe421a
JA
1221 struct fio_file *__f;
1222
f17c4392 1223 __f = smalloc(sizeof(*__f));
c48c0be7
JA
1224 if (!__f) {
1225 log_err("fio: smalloc OOM\n");
1226 assert(0);
1227 }
22a57ba8 1228 __f->fd = -1;
38dad62d 1229 fio_file_reset(__f);
0b9d69ec 1230
bc3456fa 1231 if (f->file_name) {
f17c4392 1232 __f->file_name = smalloc_strdup(f->file_name);
c48c0be7
JA
1233 if (!__f->file_name) {
1234 log_err("fio: smalloc OOM\n");
1235 assert(0);
1236 }
0b9d69ec 1237
bc3456fa
AC
1238 __f->filetype = f->filetype;
1239 }
b0fe421a
JA
1240
1241 td->files[i] = __f;
cade3ef4
JA
1242 }
1243}
f29b25a3
JA
1244
1245/*
1246 * Returns the index that matches the filename, or -1 if not there
1247 */
1248int get_fileno(struct thread_data *td, const char *fname)
1249{
1250 struct fio_file *f;
1251 unsigned int i;
1252
1253 for_each_file(td, f, i)
1254 if (!strcmp(f->file_name, fname))
1255 return i;
1256
1257 return -1;
1258}
1259
1260/*
1261 * For log usage, where we add/open/close files automatically
1262 */
1263void free_release_files(struct thread_data *td)
1264{
1265 close_files(td);
1266 td->files_index = 0;
1267 td->nr_normal_files = 0;
1268}