Remove/Move Linux specific sysfs_root field from thread_data
[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"
bcbfeefa 14#include "options.h"
ecc314ba 15#include "os/os.h"
2316296a 16#include "hash.h"
7ebd796f 17#include "lib/axmap.h"
53cdc686 18
97ac992c 19#ifdef CONFIG_LINUX_FALLOCATE
a596f047
EG
20#include <linux/falloc.h>
21#endif
22
7172cfe8
JA
23static int root_warn;
24
bcbfeefa
CE
25static FLIST_HEAD(filename_list);
26
c592b9fe
JA
27static inline void clear_error(struct thread_data *td)
28{
29 td->error = 0;
30 td->verror[0] = '\0';
31}
32
3baddf24
JA
33/*
34 * Leaves f->fd open on success, caller must close
35 */
7bb48f84 36static int extend_file(struct thread_data *td, struct fio_file *f)
25205e97 37{
ea443657 38 int r, new_layout = 0, unlink_file = 0, flags;
25205e97
JA
39 unsigned long long left;
40 unsigned int bs;
f3e1eb23 41 char *b = NULL;
b2a15192 42
4241ea8f
JA
43 if (read_only) {
44 log_err("fio: refusing extend of file due to read-only\n");
45 return 0;
46 }
47
507a702f
JA
48 /*
49 * check if we need to lay the file out complete again. fio
50 * does that for operations involving reads, or for writes
51 * where overwrite is set
52 */
1417daeb
JA
53 if (td_read(td) ||
54 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
9b87f09b 55 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
507a702f 56 new_layout = 1;
1417daeb 57 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
ea443657 58 unlink_file = 1;
507a702f 59
6ae1f57f 60 if (unlink_file || new_layout) {
2442c935
JA
61 int ret;
62
bd199f2b 63 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
2442c935
JA
64
65 ret = td_io_unlink_file(td, f);
66 if (ret != 0 && ret != ENOENT) {
7bb48f84
JA
67 td_verror(td, errno, "unlink");
68 return 1;
69 }
70 }
71
2378826d
JA
72 flags = O_WRONLY;
73 if (td->o.allow_create)
74 flags |= O_CREAT;
507a702f
JA
75 if (new_layout)
76 flags |= O_TRUNC;
77
9c0f3f32
BC
78#ifdef WIN32
79 flags |= _O_BINARY;
80#endif
81
ee56ad50 82 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
507a702f 83 f->fd = open(f->file_name, flags, 0644);
53cdc686 84 if (f->fd < 0) {
2378826d
JA
85 int err = errno;
86
87 if (err == ENOENT && !td->o.allow_create)
88 log_err("fio: file creation disallowed by "
89 "allow_file_create=0\n");
90 else
91 td_verror(td, err, "open");
53cdc686
JA
92 return 1;
93 }
94
97ac992c 95#ifdef CONFIG_POSIX_FALLOCATE
a596f047
EG
96 if (!td->o.fill_device) {
97 switch (td->o.fallocate_mode) {
98 case FIO_FALLOCATE_NONE:
99 break;
100 case FIO_FALLOCATE_POSIX:
101 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
4b91ee8f
JA
102 f->file_name,
103 (unsigned long long) f->real_file_size);
a596f047
EG
104
105 r = posix_fallocate(f->fd, 0, f->real_file_size);
106 if (r > 0) {
107 log_err("fio: posix_fallocate fails: %s\n",
108 strerror(r));
109 }
110 break;
97ac992c 111#ifdef CONFIG_LINUX_FALLOCATE
a596f047
EG
112 case FIO_FALLOCATE_KEEP_SIZE:
113 dprint(FD_FILE,
114 "fallocate(FALLOC_FL_KEEP_SIZE) "
4b91ee8f
JA
115 "file %s size %llu\n", f->file_name,
116 (unsigned long long) f->real_file_size);
7bc8c2cf 117
a596f047
EG
118 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
119 f->real_file_size);
888677a4 120 if (r != 0)
a596f047 121 td_verror(td, errno, "fallocate");
888677a4 122
a596f047 123 break;
97ac992c 124#endif /* CONFIG_LINUX_FALLOCATE */
a596f047
EG
125 default:
126 log_err("fio: unknown fallocate mode: %d\n",
127 td->o.fallocate_mode);
128 assert(0);
7bc8c2cf
JA
129 }
130 }
97ac992c 131#endif /* CONFIG_POSIX_FALLOCATE */
9b836561 132
fc74ac1d
SL
133 if (!new_layout)
134 goto done;
135
5e0074c2
JA
136 /*
137 * The size will be -1ULL when fill_device is used, so don't truncate
138 * or fallocate this file, just write it
139 */
140 if (!td->o.fill_device) {
141 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
4b91ee8f 142 (unsigned long long) f->real_file_size);
5e0074c2 143 if (ftruncate(f->fd, f->real_file_size) == -1) {
3cd4c66f
J
144 if (errno != EFBIG) {
145 td_verror(td, errno, "ftruncate");
146 goto err;
147 }
5e0074c2 148 }
5e0074c2 149 }
40f8298c 150
2dc1bbeb 151 b = malloc(td->o.max_bs[DDIR_WRITE]);
53cdc686 152
7bb48f84 153 left = f->real_file_size;
53cdc686 154 while (left && !td->terminate) {
2dc1bbeb 155 bs = td->o.max_bs[DDIR_WRITE];
53cdc686
JA
156 if (bs > left)
157 bs = left;
158
cc86c395
JA
159 fill_io_buffer(td, b, bs, bs);
160
53cdc686
JA
161 r = write(f->fd, b, bs);
162
5e0074c2
JA
163 if (r > 0) {
164 left -= r;
53cdc686
JA
165 continue;
166 } else {
5e0074c2
JA
167 if (r < 0) {
168 int __e = errno;
169
170 if (__e == ENOSPC) {
171 if (td->o.fill_device)
172 break;
173 log_info("fio: ENOSPC on laying out "
174 "file, stopping\n");
175 break;
176 }
e1161c32 177 td_verror(td, errno, "write");
5e0074c2 178 } else
e1161c32 179 td_verror(td, EIO, "write");
53cdc686
JA
180
181 break;
182 }
183 }
184
ffdfabd4
JA
185 if (td->terminate) {
186 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
38ef9c90 187 td_io_unlink_file(td, f);
ffdfabd4 188 } else if (td->o.create_fsync) {
98e1ac4e
JA
189 if (fsync(f->fd) < 0) {
190 td_verror(td, errno, "fsync");
191 goto err;
192 }
193 }
0d1cd207 194 if (td->o.fill_device && !td_write(td)) {
d6aed795 195 fio_file_clear_size_known(f);
5e0074c2
JA
196 if (td_io_get_file_size(td, f))
197 goto err;
198 if (f->io_size > f->real_file_size)
199 f->io_size = f->real_file_size;
200 }
53cdc686
JA
201
202 free(b);
507a702f 203done:
53cdc686
JA
204 return 0;
205err:
206 close(f->fd);
207 f->fd = -1;
f3e1eb23
JA
208 if (b)
209 free(b);
53cdc686
JA
210 return 1;
211}
212
afad68f7
ZY
213static int pre_read_file(struct thread_data *td, struct fio_file *f)
214{
ef799a64 215 int ret = 0, r, did_open = 0, old_runstate;
afad68f7
ZY
216 unsigned long long left;
217 unsigned int bs;
218 char *b;
219
9b87f09b 220 if (td_ioengine_flagged(td, FIO_PIPEIO))
9c0d2241
JA
221 return 0;
222
d6aed795 223 if (!fio_file_open(f)) {
b0f65863
JA
224 if (td->io_ops->open_file(td, f)) {
225 log_err("fio: cannot pre-read, failed to open file\n");
226 return 1;
227 }
228 did_open = 1;
229 }
230
8edd973d 231 old_runstate = td_bump_runstate(td, TD_PRE_READING);
b0f65863 232
afad68f7
ZY
233 bs = td->o.max_bs[DDIR_READ];
234 b = malloc(bs);
235 memset(b, 0, bs);
236
ef799a64
JA
237 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
238 td_verror(td, errno, "lseek");
239 log_err("fio: failed to lseek pre-read file\n");
240 ret = 1;
241 goto error;
242 }
243
afad68f7
ZY
244 left = f->io_size;
245
246 while (left && !td->terminate) {
247 if (bs > left)
248 bs = left;
249
250 r = read(f->fd, b, bs);
251
252 if (r == (int) bs) {
253 left -= bs;
254 continue;
255 } else {
256 td_verror(td, EIO, "pre_read");
257 break;
258 }
259 }
260
ef799a64 261error:
8edd973d 262 td_restore_runstate(td, old_runstate);
b0f65863
JA
263
264 if (did_open)
265 td->io_ops->close_file(td, f);
ef799a64 266
afad68f7 267 free(b);
ef799a64 268 return ret;
afad68f7
ZY
269}
270
a3f001f5 271unsigned long long get_rand_file_size(struct thread_data *td)
9c60ce64 272{
dc873b6f 273 unsigned long long ret, sized;
c3546b53 274 uint64_t frand_max;
1294c3ec 275 unsigned long r;
9c60ce64 276
c3546b53 277 frand_max = rand_max(&td->file_size_state);
d6b72507 278 r = __rand(&td->file_size_state);
54a21917 279 sized = td->o.file_size_high - td->o.file_size_low;
c3546b53 280 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
5ec10eaa 281 ret += td->o.file_size_low;
2dc1bbeb 282 ret -= (ret % td->o.rw_min_bs);
9c60ce64
JA
283 return ret;
284}
285
53cdc686
JA
286static int file_size(struct thread_data *td, struct fio_file *f)
287{
288 struct stat st;
289
df9c26b1 290 if (stat(f->file_name, &st) == -1) {
7bb48f84
JA
291 td_verror(td, errno, "fstat");
292 return 1;
293 }
53cdc686 294
7bb48f84 295 f->real_file_size = st.st_size;
53cdc686
JA
296 return 0;
297}
298
299static int bdev_size(struct thread_data *td, struct fio_file *f)
300{
9b836561 301 unsigned long long bytes = 0;
53cdc686
JA
302 int r;
303
df9c26b1
JA
304 if (td->io_ops->open_file(td, f)) {
305 log_err("fio: failed opening blockdev %s for size check\n",
306 f->file_name);
307 return 1;
308 }
309
ecc314ba 310 r = blockdev_size(f, &bytes);
53cdc686 311 if (r) {
e1161c32 312 td_verror(td, r, "blockdev_size");
df9c26b1 313 goto err;
53cdc686
JA
314 }
315
7ab077ab
JA
316 if (!bytes) {
317 log_err("%s: zero sized block device?\n", f->file_name);
df9c26b1 318 goto err;
7ab077ab
JA
319 }
320
53cdc686 321 f->real_file_size = bytes;
22a57ba8 322 td->io_ops->close_file(td, f);
53cdc686 323 return 0;
df9c26b1
JA
324err:
325 td->io_ops->close_file(td, f);
326 return 1;
53cdc686
JA
327}
328
4ccdccd1
JA
329static int char_size(struct thread_data *td, struct fio_file *f)
330{
331#ifdef FIO_HAVE_CHARDEV_SIZE
9b836561 332 unsigned long long bytes = 0;
4ccdccd1
JA
333 int r;
334
335 if (td->io_ops->open_file(td, f)) {
b3ec877c 336 log_err("fio: failed opening chardev %s for size check\n",
4ccdccd1
JA
337 f->file_name);
338 return 1;
339 }
340
ecc314ba 341 r = chardev_size(f, &bytes);
4ccdccd1
JA
342 if (r) {
343 td_verror(td, r, "chardev_size");
344 goto err;
345 }
346
347 if (!bytes) {
348 log_err("%s: zero sized char device?\n", f->file_name);
349 goto err;
350 }
351
352 f->real_file_size = bytes;
353 td->io_ops->close_file(td, f);
354 return 0;
355err:
356 td->io_ops->close_file(td, f);
357 return 1;
358#else
359 f->real_file_size = -1ULL;
360 return 0;
361#endif
362}
363
53cdc686
JA
364static int get_file_size(struct thread_data *td, struct fio_file *f)
365{
366 int ret = 0;
367
d6aed795 368 if (fio_file_size_known(f))
409b3417
JA
369 return 0;
370
7bb48f84
JA
371 if (f->filetype == FIO_TYPE_FILE)
372 ret = file_size(td, f);
686fbd31 373 else if (f->filetype == FIO_TYPE_BLOCK)
53cdc686 374 ret = bdev_size(td, f);
4ccdccd1
JA
375 else if (f->filetype == FIO_TYPE_CHAR)
376 ret = char_size(td, f);
53cdc686
JA
377 else
378 f->real_file_size = -1;
379
380 if (ret)
381 return ret;
382
383 if (f->file_offset > f->real_file_size) {
0f2152c1 384 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
4e0a8fa2
JA
385 (unsigned long long) f->file_offset,
386 (unsigned long long) f->real_file_size);
53cdc686
JA
387 return 1;
388 }
389
d6aed795 390 fio_file_set_size_known(f);
53cdc686
JA
391 return 0;
392}
393
3baddf24
JA
394static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
395 unsigned long long off,
396 unsigned long long len)
e5b401d4 397{
942a851a 398 int errval = 0, ret = 0;
e5b401d4 399
c8931876
JA
400#ifdef CONFIG_ESX
401 return 0;
402#endif
403
5e0074c2 404 if (len == -1ULL)
3baddf24
JA
405 len = f->io_size;
406 if (off == -1ULL)
407 off = f->file_offset;
ee56ad50 408
0d1cd207
JA
409 if (len == -1ULL || off == -1ULL)
410 return 0;
411
3baddf24
JA
412 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
413 len);
b5af8293 414
942a851a 415 if (td->io_ops->invalidate) {
d9b100fc 416 ret = td->io_ops->invalidate(td, f);
942a851a
JA
417 if (ret < 0)
418 errval = ret;
419 } else if (f->filetype == FIO_TYPE_FILE) {
ecc314ba 420 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
0b139881 421 if (ret)
942a851a 422 errval = ret;
686fbd31 423 } else if (f->filetype == FIO_TYPE_BLOCK) {
2b9f9141
KR
424 int retry_count = 0;
425
ecc314ba 426 ret = blockdev_invalidate_cache(f);
2b9f9141
KR
427 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
428 /*
429 * Linux multipath devices reject ioctl while
430 * the maps are being updated. That window can
431 * last tens of milliseconds; we'll try up to
432 * a quarter of a second.
433 */
434 usleep(10000);
435 ret = blockdev_invalidate_cache(f);
436 }
7e0e25c9 437 if (ret < 0 && errno == EACCES && geteuid()) {
7172cfe8 438 if (!root_warn) {
5ec10eaa
JA
439 log_err("fio: only root may flush block "
440 "devices. Cache flush bypassed!\n");
7172cfe8
JA
441 root_warn = 1;
442 }
7e0e25c9
JA
443 ret = 0;
444 }
942a851a
JA
445 if (ret < 0)
446 errval = errno;
b5605e9d 447 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
e5b401d4
JA
448 ret = 0;
449
dfe11fd1
JA
450 /*
451 * Cache flushing isn't a fatal condition, and we know it will
452 * happen on some platforms where we don't have the proper
453 * function to flush eg block device caches. So just warn and
454 * continue on our way.
455 */
942a851a
JA
456 if (errval)
457 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
e5b401d4 458
dfe11fd1 459 return 0;
3baddf24
JA
460
461}
462
463int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
464{
d6aed795 465 if (!fio_file_open(f))
a5fb461f
JA
466 return 0;
467
5e0074c2 468 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
e5b401d4
JA
469}
470
6977bcd0 471int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
53cdc686 472{
6977bcd0
JA
473 int ret = 0;
474
ee56ad50 475 dprint(FD_FILE, "fd close %s\n", f->file_name);
4906e0b5
JA
476
477 remove_file_hash(f);
478
6977bcd0
JA
479 if (close(f->fd) < 0)
480 ret = errno;
481
b5af8293 482 f->fd = -1;
e6c4d732
JA
483
484 if (f->shadow_fd != -1) {
485 close(f->shadow_fd);
486 f->shadow_fd = -1;
487 }
488
57e54e08 489 f->engine_data = 0;
6977bcd0 490 return ret;
53cdc686
JA
491}
492
1ccc6dc7 493int file_lookup_open(struct fio_file *f, int flags)
53cdc686 494{
29c1349f 495 struct fio_file *__f;
4d4e80f2
JA
496 int from_hash;
497
498 __f = lookup_file_hash(f->file_name);
499 if (__f) {
9efef3c4 500 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
4d4e80f2
JA
501 /*
502 * racy, need the __f->lock locked
503 */
504 f->lock = __f->lock;
4d4e80f2
JA
505 from_hash = 1;
506 } else {
9efef3c4 507 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
4d4e80f2
JA
508 from_hash = 0;
509 }
510
9c0f3f32
BC
511#ifdef WIN32
512 flags |= _O_BINARY;
513#endif
514
e8670ef8 515 f->fd = open(f->file_name, flags, 0600);
4d4e80f2
JA
516 return from_hash;
517}
518
e6c4d732
JA
519static int file_close_shadow_fds(struct thread_data *td)
520{
521 struct fio_file *f;
522 int num_closed = 0;
523 unsigned int i;
524
525 for_each_file(td, f, i) {
526 if (f->shadow_fd == -1)
527 continue;
528
529 close(f->shadow_fd);
530 f->shadow_fd = -1;
531 num_closed++;
532 }
533
534 return num_closed;
535}
536
4d4e80f2
JA
537int generic_open_file(struct thread_data *td, struct fio_file *f)
538{
66159828 539 int is_std = 0;
53cdc686 540 int flags = 0;
29c1349f 541 int from_hash = 0;
53cdc686 542
ee56ad50
JA
543 dprint(FD_FILE, "fd open %s\n", f->file_name);
544
66159828
JA
545 if (!strcmp(f->file_name, "-")) {
546 if (td_rw(td)) {
547 log_err("fio: can't read/write to stdin/out\n");
548 return 1;
549 }
550 is_std = 1;
ce98fa66
JA
551
552 /*
553 * move output logging to stderr, if we are writing to stdout
554 */
555 if (td_write(td))
556 f_out = stderr;
66159828
JA
557 }
558
6eaf09d6
SL
559 if (td_trim(td))
560 goto skip_flags;
2dc1bbeb 561 if (td->o.odirect)
2fd233b7 562 flags |= OS_O_DIRECT;
d01612f3
CM
563 if (td->o.oatomic) {
564 if (!FIO_O_ATOMIC) {
565 td_verror(td, EINVAL, "OS does not support atomic IO");
566 return 1;
567 }
568 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
569 }
2dc1bbeb 570 if (td->o.sync_io)
2fd233b7 571 flags |= O_SYNC;
2378826d 572 if (td->o.create_on_open && td->o.allow_create)
814452bd 573 flags |= O_CREAT;
6eaf09d6
SL
574skip_flags:
575 if (f->filetype != FIO_TYPE_FILE)
576 flags |= FIO_O_NOATIME;
53cdc686 577
056f3459 578open_again:
660a1cb5 579 if (td_write(td)) {
17308158
JA
580 if (!read_only)
581 flags |= O_RDWR;
53cdc686 582
2378826d 583 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
2fd233b7 584 flags |= O_CREAT;
2fd233b7 585
66159828
JA
586 if (is_std)
587 f->fd = dup(STDOUT_FILENO);
4d4e80f2
JA
588 else
589 from_hash = file_lookup_open(f, flags);
6eaf09d6 590 } else if (td_read(td)) {
4241ea8f 591 if (f->filetype == FIO_TYPE_CHAR && !read_only)
2fd233b7
JA
592 flags |= O_RDWR;
593 else
594 flags |= O_RDONLY;
595
66159828
JA
596 if (is_std)
597 f->fd = dup(STDIN_FILENO);
4d4e80f2
JA
598 else
599 from_hash = file_lookup_open(f, flags);
6eaf09d6
SL
600 } else { //td trim
601 flags |= O_RDWR;
602 from_hash = file_lookup_open(f, flags);
53cdc686
JA
603 }
604
605 if (f->fd == -1) {
e4e33258 606 char buf[FIO_VERROR_SIZE];
e1161c32
JA
607 int __e = errno;
608
835d9b9e 609 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
5921e80c 610 flags &= ~FIO_O_NOATIME;
056f3459
AC
611 goto open_again;
612 }
e6c4d732
JA
613 if (__e == EMFILE && file_close_shadow_fds(td))
614 goto open_again;
056f3459 615
98ffb8f3 616 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
e4e33258 617
a93c5f04
JA
618 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
619 log_err("fio: looks like your file system does not " \
620 "support direct=1/buffered=0\n");
621 }
622
e4e33258 623 td_verror(td, __e, buf);
3ce3ad33 624 return 1;
53cdc686
JA
625 }
626
29c1349f
JA
627 if (!from_hash && f->fd != -1) {
628 if (add_file_hash(f)) {
3f0ca9b9 629 int fio_unused ret;
29c1349f
JA
630
631 /*
e6c4d732
JA
632 * Stash away descriptor for later close. This is to
633 * work-around a "feature" on Linux, where a close of
634 * an fd that has been opened for write will trigger
635 * udev to call blkid to check partitions, fs id, etc.
de8f6de9 636 * That pollutes the device cache, which can slow down
e6c4d732 637 * unbuffered accesses.
29c1349f 638 */
e6c4d732
JA
639 if (f->shadow_fd == -1)
640 f->shadow_fd = f->fd;
641 else {
642 /*
643 * OK to ignore, we haven't done anything
644 * with it
645 */
646 ret = generic_close_file(td, f);
647 }
29c1349f
JA
648 goto open_again;
649 }
650 }
4906e0b5 651
53cdc686 652 return 0;
b5af8293
JA
653}
654
df9c26b1 655int generic_get_file_size(struct thread_data *td, struct fio_file *f)
21972cde 656{
df9c26b1 657 return get_file_size(td, f);
21972cde
JA
658}
659
7bb48f84
JA
660/*
661 * open/close all files, so that ->real_file_size gets set
662 */
bab3fd58 663static int get_file_sizes(struct thread_data *td)
7bb48f84
JA
664{
665 struct fio_file *f;
666 unsigned int i;
bab3fd58 667 int err = 0;
7bb48f84
JA
668
669 for_each_file(td, f, i) {
5ec10eaa
JA
670 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
671 f->file_name);
9efef3c4 672
99a47c69 673 if (td_io_get_file_size(td, f)) {
40b44f4a
JA
674 if (td->error != ENOENT) {
675 log_err("%s\n", td->verror);
676 err = 1;
3ce3ad33 677 break;
40b44f4a 678 }
541d66d7 679 clear_error(td);
07eb79df 680 }
409b3417
JA
681
682 if (f->real_file_size == -1ULL && td->o.size)
683 f->real_file_size = td->o.size / td->o.nr_files;
7bb48f84 684 }
bab3fd58
JA
685
686 return err;
7bb48f84
JA
687}
688
2e3bd4c2
JA
689struct fio_mount {
690 struct flist_head list;
691 const char *base;
692 char __base[256];
693 unsigned int key;
694};
695
696/*
697 * Get free number of bytes for each file on each unique mount.
698 */
699static unsigned long long get_fs_free_counts(struct thread_data *td)
700{
701 struct flist_head *n, *tmp;
68b0316f 702 unsigned long long ret = 0;
2e3bd4c2
JA
703 struct fio_mount *fm;
704 FLIST_HEAD(list);
705 struct fio_file *f;
706 unsigned int i;
707
708 for_each_file(td, f, i) {
709 struct stat sb;
710 char buf[256];
711
686fbd31 712 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
4ccdccd1
JA
713 if (f->real_file_size != -1ULL)
714 ret += f->real_file_size;
68b0316f
JA
715 continue;
716 } else if (f->filetype != FIO_TYPE_FILE)
717 continue;
718
da27a4bf
JA
719 buf[255] = '\0';
720 strncpy(buf, f->file_name, 255);
2e3bd4c2
JA
721
722 if (stat(buf, &sb) < 0) {
723 if (errno != ENOENT)
724 break;
725 strcpy(buf, ".");
726 if (stat(buf, &sb) < 0)
727 break;
728 }
729
730 fm = NULL;
731 flist_for_each(n, &list) {
732 fm = flist_entry(n, struct fio_mount, list);
733 if (fm->key == sb.st_dev)
734 break;
735
736 fm = NULL;
737 }
738
739 if (fm)
740 continue;
741
3660ceae
JA
742 fm = calloc(1, sizeof(*fm));
743 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
2e3bd4c2
JA
744 fm->base = basename(fm->__base);
745 fm->key = sb.st_dev;
746 flist_add(&fm->list, &list);
747 }
748
2e3bd4c2
JA
749 flist_for_each_safe(n, tmp, &list) {
750 unsigned long long sz;
751
752 fm = flist_entry(n, struct fio_mount, list);
753 flist_del(&fm->list);
754
c08ad04c 755 sz = get_fs_free_size(fm->base);
2e3bd4c2
JA
756 if (sz && sz != -1ULL)
757 ret += sz;
758
759 free(fm);
760 }
761
762 return ret;
763}
764
bedc9dc2 765uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
ce95d651 766{
bedc9dc2
JA
767 struct thread_options *o = &td->o;
768
769 if (o->file_append && f->filetype == FIO_TYPE_FILE)
770 return f->real_file_size;
771
9bbefaa2
JA
772 return td->o.start_offset +
773 td->subjob_number * td->o.offset_increment;
ce95d651
DE
774}
775
7bb48f84
JA
776/*
777 * Open the files and setup files sizes, creating files if necessary.
778 */
53cdc686
JA
779int setup_files(struct thread_data *td)
780{
7bb48f84 781 unsigned long long total_size, extend_size;
de98bd30 782 struct thread_options *o = &td->o;
53cdc686 783 struct fio_file *f;
002fe734 784 unsigned int i, nr_fs_extra = 0;
000b0803 785 int err = 0, need_extend;
e90391eb 786 int old_state;
002fe734
JA
787 const unsigned int bs = td_min_bs(td);
788 uint64_t fs = 0;
53cdc686 789
ee56ad50
JA
790 dprint(FD_FILE, "setup files\n");
791
8edd973d 792 old_state = td_bump_runstate(td, TD_SETTING_UP);
e90391eb 793
de98bd30 794 if (o->read_iolog_file)
25460cf6 795 goto done;
691c8fb0 796
53cdc686
JA
797 /*
798 * if ioengine defines a setup() method, it's responsible for
7bb48f84
JA
799 * opening the files and setting f->real_file_size to indicate
800 * the valid range for that file.
53cdc686
JA
801 */
802 if (td->io_ops->setup)
7bb48f84
JA
803 err = td->io_ops->setup(td);
804 else
bab3fd58 805 err = get_file_sizes(td);
53cdc686 806
f1027063 807 if (err)
e90391eb 808 goto err_out;
f1027063 809
0a7eb121 810 /*
7bb48f84
JA
811 * check sizes. if the files/devices do not exist and the size
812 * isn't passed to fio, abort.
0a7eb121 813 */
7bb48f84
JA
814 total_size = 0;
815 for_each_file(td, f, i) {
49a416bd 816 f->fileno = i;
7bb48f84
JA
817 if (f->real_file_size == -1ULL)
818 total_size = -1ULL;
819 else
820 total_size += f->real_file_size;
821 }
0a7eb121 822
de98bd30 823 if (o->fill_device)
2e3bd4c2
JA
824 td->fill_device_size = get_fs_free_counts(td);
825
7bb48f84
JA
826 /*
827 * device/file sizes are zero and no size given, punt
828 */
de98bd30 829 if ((!total_size || total_size == -1ULL) && !o->size &&
9b87f09b 830 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
de98bd30
JA
831 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
832 log_err("%s: you need to specify size=\n", o->name);
e1161c32 833 td_verror(td, EINVAL, "total_file_size");
e90391eb 834 goto err_out;
53cdc686
JA
835 }
836
002fe734
JA
837 /*
838 * Calculate per-file size and potential extra size for the
839 * first files, if needed.
840 */
d1e78e6b 841 if (!o->file_size_low && o->nr_files) {
002fe734
JA
842 uint64_t all_fs;
843
844 fs = o->size / o->nr_files;
845 all_fs = fs * o->nr_files;
846
847 if (all_fs < o->size)
848 nr_fs_extra = (o->size - all_fs) / bs;
849 }
850
7bb48f84
JA
851 /*
852 * now file sizes are known, so we can set ->io_size. if size= is
853 * not given, ->io_size is just equal to ->real_file_size. if size
854 * is given, ->io_size is size / nr_files.
855 */
856 extend_size = total_size = 0;
857 need_extend = 0;
858 for_each_file(td, f, i) {
bedc9dc2 859 f->file_offset = get_start_offset(td, f);
bcdedd0a 860
de98bd30 861 if (!o->file_size_low) {
7bb48f84
JA
862 /*
863 * no file size range given, file size is equal to
002fe734
JA
864 * total size divided by number of files. If that is
865 * zero, set it to the real file size. If the size
866 * doesn't divide nicely with the min blocksize,
867 * make the first files bigger.
7bb48f84 868 */
002fe734
JA
869 f->io_size = fs;
870 if (nr_fs_extra) {
871 nr_fs_extra--;
872 f->io_size += bs;
873 }
874
65bdb10a 875 if (!f->io_size)
273f8c91 876 f->io_size = f->real_file_size - f->file_offset;
de98bd30
JA
877 } else if (f->real_file_size < o->file_size_low ||
878 f->real_file_size > o->file_size_high) {
879 if (f->file_offset > o->file_size_low)
bcdedd0a 880 goto err_offset;
7bb48f84
JA
881 /*
882 * file size given. if it's fixed, use that. if it's a
883 * range, generate a random size in-between.
884 */
de98bd30
JA
885 if (o->file_size_low == o->file_size_high)
886 f->io_size = o->file_size_low - f->file_offset;
887 else {
5ec10eaa
JA
888 f->io_size = get_rand_file_size(td)
889 - f->file_offset;
890 }
65bdb10a 891 } else
bcdedd0a 892 f->io_size = f->real_file_size - f->file_offset;
53cdc686 893
7bb48f84
JA
894 if (f->io_size == -1ULL)
895 total_size = -1ULL;
4d002569 896 else {
e391c704
JA
897 if (o->size_percent) {
898 f->io_size = (f->io_size * o->size_percent) / 100;
899 f->io_size -= (f->io_size % td_min_bs(td));
900 }
7bb48f84 901 total_size += f->io_size;
4d002569 902 }
7bb48f84
JA
903
904 if (f->filetype == FIO_TYPE_FILE &&
bcdedd0a 905 (f->io_size + f->file_offset) > f->real_file_size &&
9b87f09b 906 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
5fd31680
JA
907 if (!o->create_on_open) {
908 need_extend++;
814452bd 909 extend_size += (f->io_size + f->file_offset);
5fd31680 910 } else
814452bd 911 f->real_file_size = f->io_size + f->file_offset;
d6aed795 912 fio_file_set_extend(f);
5ec10eaa 913 }
7bb48f84 914 }
53cdc686 915
66347cfa
DE
916 if (td->o.block_error_hist) {
917 int len;
918
919 assert(td->o.nr_files == 1); /* checked in fixup_options */
920 f = td->files[0];
921 len = f->io_size / td->o.bs[DDIR_TRIM];
922 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
923 log_err("fio: cannot calculate block histogram with "
924 "%d trim blocks, maximum %d\n",
925 len, MAX_NR_BLOCK_INFOS);
926 td_verror(td, EINVAL, "block_error_hist");
927 goto err_out;
928 }
929
930 td->ts.nr_block_infos = len;
8a68c41c 931 for (i = 0; i < len; i++)
66347cfa
DE
932 td->ts.block_infos[i] =
933 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
934 } else
935 td->ts.nr_block_infos = 0;
936
0bc27b0b 937 if (!o->size || (total_size && o->size > total_size))
de98bd30 938 o->size = total_size;
21972cde 939
d1faa06d
JA
940 if (o->size < td_min_bs(td)) {
941 log_err("fio: blocksize too large for data set\n");
942 goto err_out;
943 }
944
7bb48f84
JA
945 /*
946 * See if we need to extend some files
947 */
948 if (need_extend) {
949 temp_stall_ts = 1;
129fb2d4 950 if (output_format & FIO_OUTPUT_NORMAL)
420b104a
RE
951 log_info("%s: Laying out IO file(s) (%u file(s) / %lluMiB)\n",
952 o->name, need_extend, extend_size >> 20);
7bb48f84
JA
953
954 for_each_file(td, f, i) {
5e0074c2 955 unsigned long long old_len = -1ULL, extend_len = -1ULL;
3baddf24 956
d6aed795 957 if (!fio_file_extend(f))
7bb48f84
JA
958 continue;
959
409b3417 960 assert(f->filetype == FIO_TYPE_FILE);
d6aed795 961 fio_file_clear_extend(f);
de98bd30 962 if (!o->fill_device) {
5e0074c2 963 old_len = f->real_file_size;
0b9d69ec
JA
964 extend_len = f->io_size + f->file_offset -
965 old_len;
5e0074c2 966 }
bcdedd0a 967 f->real_file_size = (f->io_size + f->file_offset);
7bb48f84
JA
968 err = extend_file(td, f);
969 if (err)
3baddf24 970 break;
5e0074c2 971
3baddf24
JA
972 err = __file_invalidate_cache(td, f, old_len,
973 extend_len);
9824f73b
JA
974
975 /*
976 * Shut up static checker
977 */
978 if (f->fd != -1)
979 close(f->fd);
980
3baddf24
JA
981 f->fd = -1;
982 if (err)
7bb48f84
JA
983 break;
984 }
985 temp_stall_ts = 0;
986 }
987
988 if (err)
e90391eb 989 goto err_out;
7bb48f84 990
de98bd30
JA
991 if (!o->zone_size)
992 o->zone_size = o->size;
7bb48f84 993
ea966f81
JA
994 /*
995 * iolog already set the total io size, if we read back
996 * stored entries.
997 */
77731b29
JA
998 if (!o->read_iolog_file) {
999 if (o->io_limit)
1000 td->total_io_size = o->io_limit * o->loops;
1001 else
1002 td->total_io_size = o->size * o->loops;
1003 }
25460cf6
JA
1004
1005done:
de98bd30 1006 if (o->create_only)
25460cf6
JA
1007 td->done = 1;
1008
8edd973d 1009 td_restore_runstate(td, old_state);
7bb48f84 1010 return 0;
bcdedd0a 1011err_offset:
de98bd30 1012 log_err("%s: you need to specify valid offset=\n", o->name);
e90391eb 1013err_out:
8edd973d 1014 td_restore_runstate(td, old_state);
bcdedd0a 1015 return 1;
53cdc686
JA
1016}
1017
afad68f7
ZY
1018int pre_read_files(struct thread_data *td)
1019{
1020 struct fio_file *f;
1021 unsigned int i;
1022
1023 dprint(FD_FILE, "pre_read files\n");
1024
1025 for_each_file(td, f, i) {
1026 pre_read_file(td, f);
1027 }
1028
1029 return 1;
1030}
1031
9c6f6316
JA
1032static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1033{
2316296a 1034 unsigned int range_size, seed;
9c6f6316 1035 unsigned long nranges;
42da5c8b 1036 uint64_t fsize;
9c6f6316
JA
1037
1038 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
42da5c8b 1039 fsize = min(f->real_file_size, f->io_size);
9c6f6316 1040
42da5c8b 1041 nranges = (fsize + range_size - 1) / range_size;
9c6f6316 1042
2316296a 1043 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
8425687e
JA
1044 if (!td->o.rand_repeatable)
1045 seed = td->rand_seeds[4];
1046
9c6f6316 1047 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
888677a4 1048 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
56d9fa4b 1049 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
888677a4 1050 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
56d9fa4b 1051 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
f88cd222 1052 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
9c6f6316
JA
1053
1054 return 1;
1055}
1056
1057static int init_rand_distribution(struct thread_data *td)
1058{
1059 struct fio_file *f;
1060 unsigned int i;
1061 int state;
1062
1063 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1064 return 0;
1065
8edd973d
JA
1066 state = td_bump_runstate(td, TD_SETTING_UP);
1067
9c6f6316
JA
1068 for_each_file(td, f, i)
1069 __init_rand_distribution(td, f);
8edd973d
JA
1070
1071 td_restore_runstate(td, state);
9c6f6316
JA
1072
1073 return 1;
1074}
1075
75f90d5f
JA
1076/*
1077 * Check if the number of blocks exceeds the randomness capability of
1078 * the selected generator. Tausworthe is 32-bit, the others are fullly
1079 * 64-bit capable.
1080 */
1081static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1082 uint64_t blocks)
1083{
1084 if (blocks <= FRAND32_MAX)
1085 return 0;
1086 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1087 return 0;
1088
1089 /*
1090 * If the user hasn't specified a random generator, switch
1091 * to tausworthe64 with informational warning. If the user did
1092 * specify one, just warn.
1093 */
1094 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1095 f->file_name);
1096
1097 if (!fio_option_is_set(&td->o, random_generator)) {
1098 log_info("fio: Switching to tausworthe64. Use the "
1099 "random_generator= option to get rid of this "
4e795a3e 1100 "warning.\n");
75f90d5f
JA
1101 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1102 return 0;
1103 }
1104
1105 /*
1106 * Just make this information to avoid breaking scripts.
1107 */
1108 log_info("fio: Use the random_generator= option to switch to lfsr or "
1109 "tausworthe64.\n");
1110 return 0;
1111}
1112
68727076
JA
1113int init_random_map(struct thread_data *td)
1114{
51ede0b1 1115 unsigned long long blocks;
68727076
JA
1116 struct fio_file *f;
1117 unsigned int i;
1118
9c6f6316
JA
1119 if (init_rand_distribution(td))
1120 return 0;
3831a843 1121 if (!td_random(td))
68727076
JA
1122 return 0;
1123
1124 for_each_file(td, f, i) {
42da5c8b 1125 uint64_t fsize = min(f->real_file_size, f->io_size);
38f30c81 1126
42da5c8b 1127 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
53737ae0 1128
75f90d5f 1129 if (check_rand_gen_limits(td, f, blocks))
37fbd7e9 1130 return 1;
37fbd7e9 1131
8055e41d 1132 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
82af46be
JA
1133 unsigned long seed;
1134
1135 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
9c0f3f32 1136
967d1b63
JA
1137 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1138 fio_file_set_lfsr(f);
8055e41d 1139 continue;
967d1b63 1140 }
3831a843 1141 } else if (!td->o.norandommap) {
7ebd796f 1142 f->io_axmap = axmap_new(blocks);
967d1b63
JA
1143 if (f->io_axmap) {
1144 fio_file_set_axmap(f);
8055e41d 1145 continue;
967d1b63 1146 }
1cad7121
JA
1147 } else if (td->o.norandommap)
1148 continue;
ceadd59e 1149
2b386d25 1150 if (!td->o.softrandommap) {
5ec10eaa
JA
1151 log_err("fio: failed allocating random map. If running"
1152 " a large number of jobs, try the 'norandommap'"
2b386d25
JA
1153 " option or set 'softrandommap'. Or give"
1154 " a larger --alloc-size to fio.\n");
68727076
JA
1155 return 1;
1156 }
303032ae
JA
1157
1158 log_info("fio: file %s failed allocating random map. Running "
1159 "job without.\n", f->file_name);
68727076
JA
1160 }
1161
1162 return 0;
1163}
1164
53cdc686
JA
1165void close_files(struct thread_data *td)
1166{
0ab8db89 1167 struct fio_file *f;
af52b345 1168 unsigned int i;
53cdc686 1169
2be3eec3
JA
1170 for_each_file(td, f, i) {
1171 if (fio_file_open(f))
1172 td_io_close_file(td, f);
1173 }
24ffd2c2
JA
1174}
1175
1176void close_and_free_files(struct thread_data *td)
1177{
1178 struct fio_file *f;
1179 unsigned int i;
1180
ee56ad50
JA
1181 dprint(FD_FILE, "close files\n");
1182
0ab8db89 1183 for_each_file(td, f, i) {
38ef9c90
CF
1184 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1185 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1186 td_io_unlink_file(td, f);
1187 }
1188
22a57ba8
JA
1189 if (fio_file_open(f))
1190 td_io_close_file(td, f);
1191
b9fbcf21 1192 remove_file_hash(f);
b3dc7f07 1193
b5f4d8ba
JA
1194 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1195 dprint(FD_FILE, "free unlink %s\n", f->file_name);
38ef9c90 1196 td_io_unlink_file(td, f);
b5f4d8ba
JA
1197 }
1198
f17c4392 1199 sfree(f->file_name);
fa1da865 1200 f->file_name = NULL;
967d1b63
JA
1201 if (fio_file_axmap(f)) {
1202 axmap_free(f->io_axmap);
1203 f->io_axmap = NULL;
1204 }
78d99e6a 1205 sfree(f);
53cdc686 1206 }
b4a6a59a 1207
2dc1bbeb 1208 td->o.filename = NULL;
cade3ef4 1209 free(td->files);
d7df1d13 1210 free(td->file_locks);
9efef3c4 1211 td->files_index = 0;
b4a6a59a 1212 td->files = NULL;
d7df1d13 1213 td->file_locks = NULL;
27ddbfa0 1214 td->o.file_lock_mode = FILE_LOCK_NONE;
2dc1bbeb 1215 td->o.nr_files = 0;
53cdc686 1216}
af52b345 1217
e3bab463 1218static void get_file_type(struct fio_file *f)
af52b345
JA
1219{
1220 struct stat sb;
1221
66159828
JA
1222 if (!strcmp(f->file_name, "-"))
1223 f->filetype = FIO_TYPE_PIPE;
1224 else
1225 f->filetype = FIO_TYPE_FILE;
af52b345 1226
d5b78f5a 1227#ifdef WIN32
3892182a
BC
1228 /* \\.\ is the device namespace in Windows, where every file is
1229 * a block device */
1230 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
686fbd31 1231 f->filetype = FIO_TYPE_BLOCK;
d5b78f5a 1232#endif
3892182a 1233
b30d395e 1234 if (!stat(f->file_name, &sb)) {
3892182a 1235 if (S_ISBLK(sb.st_mode))
686fbd31 1236 f->filetype = FIO_TYPE_BLOCK;
af52b345
JA
1237 else if (S_ISCHR(sb.st_mode))
1238 f->filetype = FIO_TYPE_CHAR;
b5605e9d
JA
1239 else if (S_ISFIFO(sb.st_mode))
1240 f->filetype = FIO_TYPE_PIPE;
af52b345
JA
1241 }
1242}
1243
1b2a83dc 1244static bool __is_already_allocated(const char *fname, bool set)
190b8f0c 1245{
90426237 1246 struct flist_head *entry;
1b2a83dc 1247 bool ret;
bcbfeefa 1248
1b2a83dc
JA
1249 ret = file_bloom_exists(fname, set);
1250 if (!ret)
1251 return ret;
90426237
JA
1252
1253 flist_for_each(entry, &filename_list) {
04d6530f 1254 struct file_name *fn;
90426237 1255
04d6530f
JA
1256 fn = flist_entry(entry, struct file_name, list);
1257
1258 if (!strcmp(fn->filename, fname))
1259 return true;
90426237
JA
1260 }
1261
04d6530f 1262 return false;
bcbfeefa
CE
1263}
1264
04d6530f 1265static bool is_already_allocated(const char *fname)
bcbfeefa 1266{
04d6530f 1267 bool ret;
bcbfeefa 1268
90426237 1269 fio_file_hash_lock();
1b2a83dc 1270 ret = __is_already_allocated(fname, false);
90426237 1271 fio_file_hash_unlock();
04d6530f 1272
90426237
JA
1273 return ret;
1274}
bcbfeefa 1275
90426237
JA
1276static void set_already_allocated(const char *fname)
1277{
1278 struct file_name *fn;
1279
1280 fn = malloc(sizeof(struct file_name));
1281 fn->filename = strdup(fname);
1282
1283 fio_file_hash_lock();
1b2a83dc 1284 if (!__is_already_allocated(fname, true)) {
90426237
JA
1285 flist_add_tail(&fn->list, &filename_list);
1286 fn = NULL;
bcbfeefa 1287 }
90426237 1288 fio_file_hash_unlock();
bcbfeefa 1289
90426237
JA
1290 if (fn) {
1291 free(fn->filename);
1292 free(fn);
1293 }
bcbfeefa
CE
1294}
1295
190b8f0c
CF
1296static void free_already_allocated(void)
1297{
bcbfeefa
CE
1298 struct flist_head *entry, *tmp;
1299 struct file_name *fn;
1300
90426237
JA
1301 if (flist_empty(&filename_list))
1302 return;
1303
1304 fio_file_hash_lock();
1305 flist_for_each_safe(entry, tmp, &filename_list) {
1306 fn = flist_entry(entry, struct file_name, list);
1307 free(fn->filename);
1308 flist_del(&fn->list);
1309 free(fn);
bcbfeefa 1310 }
90426237
JA
1311
1312 fio_file_hash_unlock();
bcbfeefa
CE
1313}
1314
7b5cb700
JA
1315static struct fio_file *alloc_new_file(struct thread_data *td)
1316{
1317 struct fio_file *f;
1318
1319 f = smalloc(sizeof(*f));
1320 if (!f) {
7b5cb700
JA
1321 assert(0);
1322 return NULL;
1323 }
1324
1325 f->fd = -1;
1326 f->shadow_fd = -1;
1327 fio_file_reset(td, f);
1328 return f;
1329}
1330
04d6530f
JA
1331bool exists_and_not_regfile(const char *filename)
1332{
1333 struct stat sb;
1334
1335 if (lstat(filename, &sb) == -1)
1336 return false;
1337
1338#ifndef WIN32 /* NOT Windows */
1339 if (S_ISREG(sb.st_mode))
1340 return false;
1341#else
1342 /* \\.\ is the device namespace in Windows, where every file
1343 * is a device node */
1344 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1345 return false;
1346#endif
1347
1348 return true;
1349}
1350
5903e7b7 1351int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
af52b345 1352{
7b4e4fe5 1353 int cur_files = td->files_index;
bd0ee748 1354 char file_name[PATH_MAX];
af52b345 1355 struct fio_file *f;
bd0ee748 1356 int len = 0;
af52b345 1357
ee56ad50
JA
1358 dprint(FD_FILE, "add file %s\n", fname);
1359
bcbfeefa 1360 if (td->o.directory)
922a5be8
JA
1361 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1362 td->o.unique_filename);
bcbfeefa
CE
1363
1364 sprintf(file_name + len, "%s", fname);
1365
1366 /* clean cloned siblings using existing files */
04d6530f
JA
1367 if (numjob && is_already_allocated(file_name) &&
1368 !exists_and_not_regfile(fname))
bcbfeefa
CE
1369 return 0;
1370
7b5cb700 1371 f = alloc_new_file(td);
bd0ee748 1372
fc99bc0d 1373 if (td->files_size <= td->files_index) {
1983e327 1374 unsigned int new_size = td->o.nr_files + 1;
126d65c6 1375
fc99bc0d
JA
1376 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1377
1378 td->files = realloc(td->files, new_size * sizeof(f));
d537c08b
JM
1379 if (td->files == NULL) {
1380 log_err("fio: realloc OOM\n");
1381 assert(0);
1382 }
d7df1d13
JA
1383 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1384 td->file_locks = realloc(td->file_locks, new_size);
1385 if (!td->file_locks) {
1386 log_err("fio: realloc OOM\n");
1387 assert(0);
1388 }
1389 td->file_locks[cur_files] = FILE_LOCK_NONE;
1390 }
fc99bc0d
JA
1391 td->files_size = new_size;
1392 }
8bb7679e 1393 td->files[cur_files] = f;
89ac1d48 1394 f->fileno = cur_files;
126d65c6 1395
07eb79df
JA
1396 /*
1397 * init function, io engine may not be loaded yet
1398 */
9b87f09b 1399 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
07eb79df
JA
1400 f->real_file_size = -1ULL;
1401
f17c4392 1402 f->file_name = smalloc_strdup(file_name);
81b3c86f 1403 if (!f->file_name)
c48c0be7 1404 assert(0);
0b9d69ec 1405
e3bab463 1406 get_file_type(f);
af52b345 1407
4d4e80f2
JA
1408 switch (td->o.file_lock_mode) {
1409 case FILE_LOCK_NONE:
1410 break;
1411 case FILE_LOCK_READWRITE:
d7df1d13 1412 f->rwlock = fio_rwlock_init();
4d4e80f2
JA
1413 break;
1414 case FILE_LOCK_EXCLUSIVE:
521da527 1415 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
4d4e80f2
JA
1416 break;
1417 default:
1418 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1419 assert(0);
1420 }
29c1349f 1421
7b4e4fe5 1422 td->files_index++;
1549441c
JA
1423 if (f->filetype == FIO_TYPE_FILE)
1424 td->nr_normal_files++;
f29b25a3 1425
bcbfeefa
CE
1426 set_already_allocated(file_name);
1427
5903e7b7
JA
1428 if (inc)
1429 td->o.nr_files++;
1430
5ec10eaa
JA
1431 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1432 cur_files);
9efef3c4 1433
f29b25a3 1434 return cur_files;
af52b345 1435}
0ad920e7 1436
49ffb4a2
JA
1437int add_file_exclusive(struct thread_data *td, const char *fname)
1438{
1439 struct fio_file *f;
1440 unsigned int i;
1441
1442 for_each_file(td, f, i) {
1443 if (!strcmp(f->file_name, fname))
1444 return i;
1445 }
1446
5903e7b7 1447 return add_file(td, fname, 0, 1);
49ffb4a2
JA
1448}
1449
0ad920e7
JA
1450void get_file(struct fio_file *f)
1451{
8172fe97 1452 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
d6aed795 1453 assert(fio_file_open(f));
0ad920e7
JA
1454 f->references++;
1455}
1456
6977bcd0 1457int put_file(struct thread_data *td, struct fio_file *f)
0ad920e7 1458{
98e1ac4e 1459 int f_ret = 0, ret = 0;
6977bcd0 1460
8172fe97 1461 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
ee56ad50 1462
22a57ba8
JA
1463 if (!fio_file_open(f)) {
1464 assert(f->fd == -1);
6977bcd0 1465 return 0;
22a57ba8 1466 }
0ad920e7
JA
1467
1468 assert(f->references);
1469 if (--f->references)
6977bcd0 1470 return 0;
0ad920e7 1471
71b84caa 1472 if (should_fsync(td) && td->o.fsync_on_close) {
98e1ac4e 1473 f_ret = fsync(f->fd);
71b84caa
JA
1474 if (f_ret < 0)
1475 f_ret = errno;
1476 }
ebb1415f 1477
0ad920e7 1478 if (td->io_ops->close_file)
6977bcd0 1479 ret = td->io_ops->close_file(td, f);
1020a139 1480
98e1ac4e 1481 if (!ret)
a5fb461f 1482 ret = f_ret;
98e1ac4e 1483
0ad920e7 1484 td->nr_open_files--;
d6aed795 1485 fio_file_clear_open(f);
22a57ba8 1486 assert(f->fd == -1);
6977bcd0 1487 return ret;
0ad920e7 1488}
bbf6b540 1489
4d4e80f2 1490void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
b2bd2bd9 1491{
4d4e80f2
JA
1492 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1493 return;
29c1349f 1494
4d4e80f2
JA
1495 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1496 if (ddir == DDIR_READ)
d7df1d13 1497 fio_rwlock_read(f->rwlock);
4d4e80f2 1498 else
d7df1d13 1499 fio_rwlock_write(f->rwlock);
4d4e80f2
JA
1500 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1501 fio_mutex_down(f->lock);
1502
d7df1d13 1503 td->file_locks[f->fileno] = td->o.file_lock_mode;
b2bd2bd9
JA
1504}
1505
4d4e80f2 1506void unlock_file(struct thread_data *td, struct fio_file *f)
b2bd2bd9 1507{
4d4e80f2
JA
1508 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1509 return;
4d4e80f2 1510
d7df1d13
JA
1511 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1512 fio_rwlock_unlock(f->rwlock);
1513 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
4d4e80f2 1514 fio_mutex_up(f->lock);
d7df1d13
JA
1515
1516 td->file_locks[f->fileno] = FILE_LOCK_NONE;
b2bd2bd9
JA
1517}
1518
4d4e80f2
JA
1519void unlock_file_all(struct thread_data *td, struct fio_file *f)
1520{
f2a2803a 1521 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
27ddbfa0 1522 return;
d7df1d13
JA
1523 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1524 unlock_file(td, f);
4d4e80f2
JA
1525}
1526
bbf6b540
JA
1527static int recurse_dir(struct thread_data *td, const char *dirname)
1528{
1529 struct dirent *dir;
1530 int ret = 0;
1531 DIR *D;
1532
1533 D = opendir(dirname);
1534 if (!D) {
0ddb270c
JA
1535 char buf[FIO_VERROR_SIZE];
1536
98ffb8f3 1537 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
0ddb270c 1538 td_verror(td, errno, buf);
bbf6b540
JA
1539 return 1;
1540 }
1541
1542 while ((dir = readdir(D)) != NULL) {
1543 char full_path[PATH_MAX];
1544 struct stat sb;
1545
e85b2b83
JA
1546 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1547 continue;
96d32d51 1548
b9fd788f 1549 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
bbf6b540
JA
1550
1551 if (lstat(full_path, &sb) == -1) {
1552 if (errno != ENOENT) {
1553 td_verror(td, errno, "stat");
68ace9e0
JA
1554 ret = 1;
1555 break;
bbf6b540
JA
1556 }
1557 }
1558
1559 if (S_ISREG(sb.st_mode)) {
5903e7b7 1560 add_file(td, full_path, 0, 1);
bbf6b540
JA
1561 continue;
1562 }
0ddb270c
JA
1563 if (!S_ISDIR(sb.st_mode))
1564 continue;
bbf6b540 1565
5ec10eaa
JA
1566 ret = recurse_dir(td, full_path);
1567 if (ret)
bbf6b540
JA
1568 break;
1569 }
1570
1571 closedir(D);
1572 return ret;
1573}
1574
1575int add_dir_files(struct thread_data *td, const char *path)
1576{
0ddb270c
JA
1577 int ret = recurse_dir(td, path);
1578
1579 if (!ret)
1580 log_info("fio: opendir added %d files\n", td->o.nr_files);
1581
1582 return ret;
bbf6b540 1583}
cade3ef4
JA
1584
1585void dup_files(struct thread_data *td, struct thread_data *org)
1586{
1587 struct fio_file *f;
1588 unsigned int i;
9efef3c4
JA
1589
1590 dprint(FD_FILE, "dup files: %d\n", org->files_index);
cade3ef4
JA
1591
1592 if (!org->files)
1593 return;
1594
9efef3c4 1595 td->files = malloc(org->files_index * sizeof(f));
cade3ef4 1596
d7df1d13
JA
1597 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1598 td->file_locks = malloc(org->files_index);
1599
9efef3c4 1600 for_each_file(org, f, i) {
b0fe421a
JA
1601 struct fio_file *__f;
1602
7b5cb700 1603 __f = alloc_new_file(td);
0b9d69ec 1604
bc3456fa 1605 if (f->file_name) {
f17c4392 1606 __f->file_name = smalloc_strdup(f->file_name);
81b3c86f 1607 if (!__f->file_name)
c48c0be7 1608 assert(0);
0b9d69ec 1609
bc3456fa
AC
1610 __f->filetype = f->filetype;
1611 }
b0fe421a 1612
67ad9242
JA
1613 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1614 __f->lock = f->lock;
1615 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1616 __f->rwlock = f->rwlock;
1617
b0fe421a 1618 td->files[i] = __f;
cade3ef4
JA
1619 }
1620}
f29b25a3
JA
1621
1622/*
1623 * Returns the index that matches the filename, or -1 if not there
1624 */
1625int get_fileno(struct thread_data *td, const char *fname)
1626{
1627 struct fio_file *f;
1628 unsigned int i;
1629
1630 for_each_file(td, f, i)
1631 if (!strcmp(f->file_name, fname))
1632 return i;
1633
1634 return -1;
1635}
1636
1637/*
1638 * For log usage, where we add/open/close files automatically
1639 */
1640void free_release_files(struct thread_data *td)
1641{
1642 close_files(td);
66ee4002
JA
1643 td->o.nr_files = 0;
1644 td->o.open_files = 0;
f29b25a3
JA
1645 td->files_index = 0;
1646 td->nr_normal_files = 0;
1647}
33c48814
JA
1648
1649void fio_file_reset(struct thread_data *td, struct fio_file *f)
1650{
f1dfb668
JA
1651 int i;
1652
1653 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1654 f->last_pos[i] = f->file_offset;
1655 f->last_start[i] = -1ULL;
1656 }
1657
967d1b63 1658 if (fio_file_axmap(f))
33c48814 1659 axmap_reset(f->io_axmap);
967d1b63 1660 else if (fio_file_lfsr(f))
33c48814
JA
1661 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1662}
002fe734 1663
747b3105 1664bool fio_files_done(struct thread_data *td)
002fe734
JA
1665{
1666 struct fio_file *f;
1667 unsigned int i;
1668
1669 for_each_file(td, f, i)
1670 if (!fio_file_done(f))
747b3105 1671 return false;
002fe734 1672
747b3105 1673 return true;
002fe734 1674}
bcbfeefa
CE
1675
1676/* free memory used in initialization phase only */
190b8f0c
CF
1677void filesetup_mem_free(void)
1678{
bcbfeefa
CE
1679 free_already_allocated();
1680}