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genzipf: add help/usage screen (-h)
[fio.git] / init.c
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1/*
2 * This file contains job initialization and setup functions.
3 */
4#include <stdio.h>
5#include <stdlib.h>
6#include <unistd.h>
7#include <fcntl.h>
8#include <ctype.h>
9#include <string.h>
10#include <errno.h>
11#include <sys/ipc.h>
12#include <sys/shm.h>
13#include <sys/types.h>
14#include <sys/stat.h>
15
16#include "fio.h"
17#include "parse.h"
18#include "smalloc.h"
19#include "filehash.h"
20#include "verify.h"
21#include "profile.h"
22#include "server.h"
23
24#include "lib/getopt.h"
25
26const char fio_version_string[] = FIO_VERSION;
27
28#define FIO_RANDSEED (0xb1899bedUL)
29
30static char **ini_file;
31static int max_jobs = FIO_MAX_JOBS;
32static int dump_cmdline;
33static int def_timeout;
34
35static struct thread_data def_thread;
36struct thread_data *threads = NULL;
37
38int exitall_on_terminate = 0;
39int output_format = FIO_OUTPUT_NORMAL;
40int eta_print;
41unsigned long long mlock_size = 0;
42FILE *f_out = NULL;
43FILE *f_err = NULL;
44char **job_sections = NULL;
45int nr_job_sections = 0;
46char *exec_profile = NULL;
47int warnings_fatal = 0;
48int terse_version = 3;
49int is_backend = 0;
50int nr_clients = 0;
51int log_syslog = 0;
52
53int write_bw_log = 0;
54int read_only = 0;
55
56static int write_lat_log;
57
58static int prev_group_jobs;
59
60unsigned long fio_debug = 0;
61unsigned int fio_debug_jobno = -1;
62unsigned int *fio_debug_jobp = NULL;
63
64static char cmd_optstr[256];
65static int did_arg;
66
67const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
68 { .u.f = 1.00 },
69 { .u.f = 5.00 },
70 { .u.f = 10.00 },
71 { .u.f = 20.00 },
72 { .u.f = 30.00 },
73 { .u.f = 40.00 },
74 { .u.f = 50.00 },
75 { .u.f = 60.00 },
76 { .u.f = 70.00 },
77 { .u.f = 80.00 },
78 { .u.f = 90.00 },
79 { .u.f = 95.00 },
80 { .u.f = 99.00 },
81 { .u.f = 99.50 },
82 { .u.f = 99.90 },
83 { .u.f = 99.95 },
84 { .u.f = 99.99 },
85};
86
87#define FIO_CLIENT_FLAG (1 << 16)
88
89/*
90 * Command line options. These will contain the above, plus a few
91 * extra that only pertain to fio itself and not jobs.
92 */
93static struct option l_opts[FIO_NR_OPTIONS] = {
94 {
95 .name = (char *) "output",
96 .has_arg = required_argument,
97 .val = 'o' | FIO_CLIENT_FLAG,
98 },
99 {
100 .name = (char *) "timeout",
101 .has_arg = required_argument,
102 .val = 't' | FIO_CLIENT_FLAG,
103 },
104 {
105 .name = (char *) "latency-log",
106 .has_arg = required_argument,
107 .val = 'l' | FIO_CLIENT_FLAG,
108 },
109 {
110 .name = (char *) "bandwidth-log",
111 .has_arg = required_argument,
112 .val = 'b' | FIO_CLIENT_FLAG,
113 },
114 {
115 .name = (char *) "minimal",
116 .has_arg = optional_argument,
117 .val = 'm' | FIO_CLIENT_FLAG,
118 },
119 {
120 .name = (char *) "output-format",
121 .has_arg = optional_argument,
122 .val = 'F' | FIO_CLIENT_FLAG,
123 },
124 {
125 .name = (char *) "version",
126 .has_arg = no_argument,
127 .val = 'v' | FIO_CLIENT_FLAG,
128 },
129 {
130 .name = (char *) "help",
131 .has_arg = no_argument,
132 .val = 'h' | FIO_CLIENT_FLAG,
133 },
134 {
135 .name = (char *) "cmdhelp",
136 .has_arg = optional_argument,
137 .val = 'c' | FIO_CLIENT_FLAG,
138 },
139 {
140 .name = (char *) "enghelp",
141 .has_arg = optional_argument,
142 .val = 'i' | FIO_CLIENT_FLAG,
143 },
144 {
145 .name = (char *) "showcmd",
146 .has_arg = no_argument,
147 .val = 's' | FIO_CLIENT_FLAG,
148 },
149 {
150 .name = (char *) "readonly",
151 .has_arg = no_argument,
152 .val = 'r' | FIO_CLIENT_FLAG,
153 },
154 {
155 .name = (char *) "eta",
156 .has_arg = required_argument,
157 .val = 'e' | FIO_CLIENT_FLAG,
158 },
159 {
160 .name = (char *) "debug",
161 .has_arg = required_argument,
162 .val = 'd' | FIO_CLIENT_FLAG,
163 },
164 {
165 .name = (char *) "section",
166 .has_arg = required_argument,
167 .val = 'x' | FIO_CLIENT_FLAG,
168 },
169 {
170 .name = (char *) "alloc-size",
171 .has_arg = required_argument,
172 .val = 'a' | FIO_CLIENT_FLAG,
173 },
174 {
175 .name = (char *) "profile",
176 .has_arg = required_argument,
177 .val = 'p' | FIO_CLIENT_FLAG,
178 },
179 {
180 .name = (char *) "warnings-fatal",
181 .has_arg = no_argument,
182 .val = 'w' | FIO_CLIENT_FLAG,
183 },
184 {
185 .name = (char *) "max-jobs",
186 .has_arg = required_argument,
187 .val = 'j' | FIO_CLIENT_FLAG,
188 },
189 {
190 .name = (char *) "terse-version",
191 .has_arg = required_argument,
192 .val = 'V' | FIO_CLIENT_FLAG,
193 },
194 {
195 .name = (char *) "server",
196 .has_arg = optional_argument,
197 .val = 'S',
198 },
199 { .name = (char *) "daemonize",
200 .has_arg = required_argument,
201 .val = 'D',
202 },
203 {
204 .name = (char *) "client",
205 .has_arg = required_argument,
206 .val = 'C',
207 },
208 {
209 .name = NULL,
210 },
211};
212
213static void free_shm(void)
214{
215 struct shmid_ds sbuf;
216
217 if (threads) {
218 void *tp = threads;
219
220 threads = NULL;
221 file_hash_exit();
222 flow_exit();
223 fio_debug_jobp = NULL;
224 shmdt(tp);
225 shmctl(shm_id, IPC_RMID, &sbuf);
226 }
227
228 scleanup();
229}
230
231/*
232 * The thread area is shared between the main process and the job
233 * threads/processes. So setup a shared memory segment that will hold
234 * all the job info. We use the end of the region for keeping track of
235 * open files across jobs, for file sharing.
236 */
237static int setup_thread_area(void)
238{
239 void *hash;
240
241 if (threads)
242 return 0;
243
244 /*
245 * 1024 is too much on some machines, scale max_jobs if
246 * we get a failure that looks like too large a shm segment
247 */
248 do {
249 size_t size = max_jobs * sizeof(struct thread_data);
250
251 size += file_hash_size;
252 size += sizeof(unsigned int);
253
254 shm_id = shmget(0, size, IPC_CREAT | 0600);
255 if (shm_id != -1)
256 break;
257 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
258 perror("shmget");
259 break;
260 }
261
262 max_jobs >>= 1;
263 } while (max_jobs);
264
265 if (shm_id == -1)
266 return 1;
267
268 threads = shmat(shm_id, NULL, 0);
269 if (threads == (void *) -1) {
270 perror("shmat");
271 return 1;
272 }
273
274 memset(threads, 0, max_jobs * sizeof(struct thread_data));
275 hash = (void *) threads + max_jobs * sizeof(struct thread_data);
276 fio_debug_jobp = (void *) hash + file_hash_size;
277 *fio_debug_jobp = -1;
278 file_hash_init(hash);
279
280 flow_init();
281
282 return 0;
283}
284
285/*
286 * Return a free job structure.
287 */
288static struct thread_data *get_new_job(int global, struct thread_data *parent,
289 int preserve_eo)
290{
291 struct thread_data *td;
292
293 if (global)
294 return &def_thread;
295 if (setup_thread_area()) {
296 log_err("error: failed to setup shm segment\n");
297 return NULL;
298 }
299 if (thread_number >= max_jobs) {
300 log_err("error: maximum number of jobs (%d) reached.\n",
301 max_jobs);
302 return NULL;
303 }
304
305 td = &threads[thread_number++];
306 *td = *parent;
307
308 td->io_ops = NULL;
309 if (!preserve_eo)
310 td->eo = NULL;
311
312 td->o.uid = td->o.gid = -1U;
313
314 dup_files(td, parent);
315 fio_options_mem_dupe(td);
316
317 profile_add_hooks(td);
318
319 td->thread_number = thread_number;
320
321 if (!parent || !parent->o.group_reporting)
322 stat_number++;
323
324 return td;
325}
326
327static void put_job(struct thread_data *td)
328{
329 if (td == &def_thread)
330 return;
331
332 profile_td_exit(td);
333 flow_exit_job(td);
334
335 if (td->error)
336 log_info("fio: %s\n", td->verror);
337
338 fio_options_free(td);
339 if (td->io_ops)
340 free_ioengine(td);
341
342 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
343 thread_number--;
344}
345
346static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
347{
348 unsigned int bs = td->o.min_bs[ddir];
349
350 assert(ddir_rw(ddir));
351
352 if (td->o.rate[ddir])
353 td->rate_bps[ddir] = td->o.rate[ddir];
354 else
355 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
356
357 if (!td->rate_bps[ddir]) {
358 log_err("rate lower than supported\n");
359 return -1;
360 }
361
362 td->rate_pending_usleep[ddir] = 0;
363 return 0;
364}
365
366static int setup_rate(struct thread_data *td)
367{
368 int ret = 0;
369
370 if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
371 ret = __setup_rate(td, DDIR_READ);
372 if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
373 ret |= __setup_rate(td, DDIR_WRITE);
374 if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
375 ret |= __setup_rate(td, DDIR_TRIM);
376
377 return ret;
378}
379
380static int fixed_block_size(struct thread_options *o)
381{
382 return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
383 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
384 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
385 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
386 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
387}
388
389/*
390 * Lazy way of fixing up options that depend on each other. We could also
391 * define option callback handlers, but this is easier.
392 */
393static int fixup_options(struct thread_data *td)
394{
395 struct thread_options *o = &td->o;
396 int ret = 0;
397
398#ifndef FIO_HAVE_PSHARED_MUTEX
399 if (!o->use_thread) {
400 log_info("fio: this platform does not support process shared"
401 " mutexes, forcing use of threads. Use the 'thread'"
402 " option to get rid of this warning.\n");
403 o->use_thread = 1;
404 ret = warnings_fatal;
405 }
406#endif
407
408 if (o->write_iolog_file && o->read_iolog_file) {
409 log_err("fio: read iolog overrides write_iolog\n");
410 free(o->write_iolog_file);
411 o->write_iolog_file = NULL;
412 ret = warnings_fatal;
413 }
414
415 /*
416 * only really works with 1 file
417 */
418 if (o->zone_size && o->open_files == 1)
419 o->zone_size = 0;
420
421 /*
422 * If zone_range isn't specified, backward compatibility dictates it
423 * should be made equal to zone_size.
424 */
425 if (o->zone_size && !o->zone_range)
426 o->zone_range = o->zone_size;
427
428 /*
429 * Reads can do overwrites, we always need to pre-create the file
430 */
431 if (td_read(td) || td_rw(td))
432 o->overwrite = 1;
433
434 if (!o->min_bs[DDIR_READ])
435 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
436 if (!o->max_bs[DDIR_READ])
437 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
438 if (!o->min_bs[DDIR_WRITE])
439 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
440 if (!o->max_bs[DDIR_WRITE])
441 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
442 if (!o->min_bs[DDIR_TRIM])
443 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
444 if (!o->max_bs[DDIR_TRIM])
445 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
446
447
448 o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
449 o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
450
451 /*
452 * For random IO, allow blockalign offset other than min_bs.
453 */
454 if (!o->ba[DDIR_READ] || !td_random(td))
455 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
456 if (!o->ba[DDIR_WRITE] || !td_random(td))
457 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
458 if (!o->ba[DDIR_TRIM] || !td_random(td))
459 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
460
461 if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
462 o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
463 o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
464 !o->norandommap) {
465 log_err("fio: Any use of blockalign= turns off randommap\n");
466 o->norandommap = 1;
467 ret = warnings_fatal;
468 }
469
470 if (!o->file_size_high)
471 o->file_size_high = o->file_size_low;
472
473 if (o->norandommap && o->verify != VERIFY_NONE
474 && !fixed_block_size(o)) {
475 log_err("fio: norandommap given for variable block sizes, "
476 "verify disabled\n");
477 o->verify = VERIFY_NONE;
478 ret = warnings_fatal;
479 }
480 if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
481 log_err("fio: bs_unaligned may not work with raw io\n");
482
483 /*
484 * thinktime_spin must be less than thinktime
485 */
486 if (o->thinktime_spin > o->thinktime)
487 o->thinktime_spin = o->thinktime;
488
489 /*
490 * The low water mark cannot be bigger than the iodepth
491 */
492 if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
493 /*
494 * syslet work around - if the workload is sequential,
495 * we want to let the queue drain all the way down to
496 * avoid seeking between async threads
497 */
498 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
499 o->iodepth_low = 1;
500 else
501 o->iodepth_low = o->iodepth;
502 }
503
504 /*
505 * If batch number isn't set, default to the same as iodepth
506 */
507 if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
508 o->iodepth_batch = o->iodepth;
509
510 if (o->nr_files > td->files_index)
511 o->nr_files = td->files_index;
512
513 if (o->open_files > o->nr_files || !o->open_files)
514 o->open_files = o->nr_files;
515
516 if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
517 (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
518 ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
519 (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
520 log_err("fio: rate and rate_iops are mutually exclusive\n");
521 ret = 1;
522 }
523 if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
524 (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
525 (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
526 (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
527 (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
528 (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
529 log_err("fio: minimum rate exceeds rate\n");
530 ret = 1;
531 }
532
533 if (!o->timeout && o->time_based) {
534 log_err("fio: time_based requires a runtime/timeout setting\n");
535 o->time_based = 0;
536 ret = warnings_fatal;
537 }
538
539 if (o->fill_device && !o->size)
540 o->size = -1ULL;
541
542 if (o->verify != VERIFY_NONE) {
543 if (td_write(td) && o->do_verify && o->numjobs > 1) {
544 log_info("Multiple writers may overwrite blocks that "
545 "belong to other jobs. This can cause "
546 "verification failures.\n");
547 ret = warnings_fatal;
548 }
549
550 o->refill_buffers = 1;
551 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
552 !o->verify_interval)
553 o->verify_interval = o->min_bs[DDIR_WRITE];
554 }
555
556 if (o->pre_read) {
557 o->invalidate_cache = 0;
558 if (td->io_ops->flags & FIO_PIPEIO) {
559 log_info("fio: cannot pre-read files with an IO engine"
560 " that isn't seekable. Pre-read disabled.\n");
561 ret = warnings_fatal;
562 }
563 }
564
565#ifndef FIO_HAVE_FDATASYNC
566 if (o->fdatasync_blocks) {
567 log_info("fio: this platform does not support fdatasync()"
568 " falling back to using fsync(). Use the 'fsync'"
569 " option instead of 'fdatasync' to get rid of"
570 " this warning\n");
571 o->fsync_blocks = o->fdatasync_blocks;
572 o->fdatasync_blocks = 0;
573 ret = warnings_fatal;
574 }
575#endif
576
577#ifdef WIN32
578 /*
579 * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
580 * so fail if we're passed those flags
581 */
582 if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
583 log_err("fio: Windows does not support direct or non-buffered io with"
584 " the synchronous ioengines. Use the 'windowsaio' ioengine"
585 " with 'direct=1' and 'iodepth=1' instead.\n");
586 ret = 1;
587 }
588#endif
589
590 /*
591 * For fully compressible data, just zero them at init time.
592 * It's faster than repeatedly filling it.
593 */
594 if (td->o.compress_percentage == 100) {
595 td->o.zero_buffers = 1;
596 td->o.compress_percentage = 0;
597 }
598
599 return ret;
600}
601
602/*
603 * This function leaks the buffer
604 */
605static char *to_kmg(unsigned int val)
606{
607 char *buf = malloc(32);
608 char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
609 char *p = post;
610
611 do {
612 if (val & 1023)
613 break;
614
615 val >>= 10;
616 p++;
617 } while (*p);
618
619 snprintf(buf, 31, "%u%c", val, *p);
620 return buf;
621}
622
623/* External engines are specified by "external:name.o") */
624static const char *get_engine_name(const char *str)
625{
626 char *p = strstr(str, ":");
627
628 if (!p)
629 return str;
630
631 p++;
632 strip_blank_front(&p);
633 strip_blank_end(p);
634 return p;
635}
636
637static int exists_and_not_file(const char *filename)
638{
639 struct stat sb;
640
641 if (lstat(filename, &sb) == -1)
642 return 0;
643
644 /* \\.\ is the device namespace in Windows, where every file
645 * is a device node */
646 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
647 return 0;
648
649 return 1;
650}
651
652static void td_fill_rand_seeds_os(struct thread_data *td)
653{
654 os_random_seed(td->rand_seeds[0], &td->bsrange_state);
655 os_random_seed(td->rand_seeds[1], &td->verify_state);
656 os_random_seed(td->rand_seeds[2], &td->rwmix_state);
657
658 if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
659 os_random_seed(td->rand_seeds[3], &td->next_file_state);
660
661 os_random_seed(td->rand_seeds[5], &td->file_size_state);
662 os_random_seed(td->rand_seeds[6], &td->trim_state);
663
664 if (!td_random(td))
665 return;
666
667 if (td->o.rand_repeatable)
668 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
669
670 os_random_seed(td->rand_seeds[4], &td->random_state);
671}
672
673static void td_fill_rand_seeds_internal(struct thread_data *td)
674{
675 init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
676 init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
677 init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
678
679 if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
680 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
681
682 init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
683 init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
684
685 if (!td_random(td))
686 return;
687
688 if (td->o.rand_repeatable)
689 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
690
691 init_rand_seed(&td->__random_state, td->rand_seeds[4]);
692}
693
694void td_fill_rand_seeds(struct thread_data *td)
695{
696 if (td->o.use_os_rand)
697 td_fill_rand_seeds_os(td);
698 else
699 td_fill_rand_seeds_internal(td);
700
701 init_rand_seed(&td->buf_state, td->rand_seeds[7]);
702}
703
704
705/*
706 * Initializes the ioengine configured for a job, if it has not been done so
707 * already.
708 */
709int ioengine_load(struct thread_data *td)
710{
711 const char *engine;
712
713 /*
714 * Engine has already been loaded.
715 */
716 if (td->io_ops)
717 return 0;
718
719 engine = get_engine_name(td->o.ioengine);
720 td->io_ops = load_ioengine(td, engine);
721 if (!td->io_ops) {
722 log_err("fio: failed to load engine %s\n", engine);
723 return 1;
724 }
725
726 if (td->io_ops->option_struct_size && td->io_ops->options) {
727 /*
728 * In cases where td->eo is set, clone it for a child thread.
729 * This requires that the parent thread has the same ioengine,
730 * but that requirement must be enforced by the code which
731 * cloned the thread.
732 */
733 void *origeo = td->eo;
734 /*
735 * Otherwise use the default thread options.
736 */
737 if (!origeo && td != &def_thread && def_thread.eo &&
738 def_thread.io_ops->options == td->io_ops->options)
739 origeo = def_thread.eo;
740
741 options_init(td->io_ops->options);
742 td->eo = malloc(td->io_ops->option_struct_size);
743 /*
744 * Use the default thread as an option template if this uses the
745 * same options structure and there are non-default options
746 * used.
747 */
748 if (origeo) {
749 memcpy(td->eo, origeo, td->io_ops->option_struct_size);
750 options_mem_dupe(td->eo, td->io_ops->options);
751 } else {
752 memset(td->eo, 0, td->io_ops->option_struct_size);
753 fill_default_options(td->eo, td->io_ops->options);
754 }
755 *(struct thread_data **)td->eo = td;
756 }
757
758 return 0;
759}
760
761/*
762 * Adds a job to the list of things todo. Sanitizes the various options
763 * to make sure we don't have conflicts, and initializes various
764 * members of td.
765 */
766static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
767{
768 const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
769 "randread", "randwrite", "randrw",
770 "trim", NULL, NULL, NULL, "randtrim" };
771 unsigned int i;
772 char fname[PATH_MAX];
773 int numjobs, file_alloced;
774
775 /*
776 * the def_thread is just for options, it's not a real job
777 */
778 if (td == &def_thread)
779 return 0;
780
781 /*
782 * if we are just dumping the output command line, don't add the job
783 */
784 if (dump_cmdline) {
785 put_job(td);
786 return 0;
787 }
788
789 if (profile_td_init(td))
790 goto err;
791
792 if (ioengine_load(td))
793 goto err;
794
795 if (td->o.use_thread)
796 nr_thread++;
797 else
798 nr_process++;
799
800 if (td->o.odirect)
801 td->io_ops->flags |= FIO_RAWIO;
802
803 file_alloced = 0;
804 if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
805 file_alloced = 1;
806
807 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
808 add_file(td, jobname);
809 else {
810 for (i = 0; i < td->o.nr_files; i++) {
811 sprintf(fname, "%s.%d.%d", jobname,
812 td->thread_number, i);
813 add_file(td, fname);
814 }
815 }
816 }
817
818 if (fixup_options(td))
819 goto err;
820
821 flow_init_job(td);
822
823 /*
824 * IO engines only need this for option callbacks, and the address may
825 * change in subprocesses.
826 */
827 if (td->eo)
828 *(struct thread_data **)td->eo = NULL;
829
830 if (td->io_ops->flags & FIO_DISKLESSIO) {
831 struct fio_file *f;
832
833 for_each_file(td, f, i)
834 f->real_file_size = -1ULL;
835 }
836
837 td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
838
839 td->ts.clat_percentiles = td->o.clat_percentiles;
840 if (td->o.overwrite_plist)
841 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
842 else
843 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
844
845 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
846 td->ts.clat_stat[i].min_val = ULONG_MAX;
847 td->ts.slat_stat[i].min_val = ULONG_MAX;
848 td->ts.lat_stat[i].min_val = ULONG_MAX;
849 td->ts.bw_stat[i].min_val = ULONG_MAX;
850 }
851 td->ddir_seq_nr = td->o.ddir_seq_nr;
852
853 if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
854 prev_group_jobs = 0;
855 groupid++;
856 }
857
858 td->groupid = groupid;
859 prev_group_jobs++;
860
861 if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
862 td_verror(td, errno, "init_random_state");
863 goto err;
864 }
865
866 if (setup_rate(td))
867 goto err;
868
869 if (td->o.write_lat_log) {
870 setup_log(&td->lat_log, td->o.log_avg_msec);
871 setup_log(&td->slat_log, td->o.log_avg_msec);
872 setup_log(&td->clat_log, td->o.log_avg_msec);
873 }
874 if (td->o.write_bw_log)
875 setup_log(&td->bw_log, td->o.log_avg_msec);
876 if (td->o.write_iops_log)
877 setup_log(&td->iops_log, td->o.log_avg_msec);
878
879 if (!td->o.name)
880 td->o.name = strdup(jobname);
881
882 if (output_format == FIO_OUTPUT_NORMAL) {
883 if (!job_add_num) {
884 if (!strcmp(td->io_ops->name, "cpuio")) {
885 log_info("%s: ioengine=cpu, cpuload=%u,"
886 " cpucycle=%u\n", td->o.name,
887 td->o.cpuload,
888 td->o.cpucycle);
889 } else {
890 char *c1, *c2, *c3, *c4, *c5, *c6;
891
892 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
893 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
894 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
895 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
896 c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
897 c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
898
899 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
900 " ioengine=%s, iodepth=%u\n",
901 td->o.name, td->groupid,
902 ddir_str[td->o.td_ddir],
903 c1, c2, c3, c4, c5, c6,
904 td->io_ops->name,
905 td->o.iodepth);
906
907 free(c1);
908 free(c2);
909 free(c3);
910 free(c4);
911 free(c5);
912 free(c6);
913 }
914 } else if (job_add_num == 1)
915 log_info("...\n");
916 }
917
918 /*
919 * recurse add identical jobs, clear numjobs and stonewall options
920 * as they don't apply to sub-jobs
921 */
922 numjobs = td->o.numjobs;
923 while (--numjobs) {
924 struct thread_data *td_new = get_new_job(0, td, 1);
925
926 if (!td_new)
927 goto err;
928
929 td_new->o.numjobs = 1;
930 td_new->o.stonewall = 0;
931 td_new->o.new_group = 0;
932
933 if (file_alloced) {
934 td_new->o.filename = NULL;
935 td_new->files_index = 0;
936 td_new->files_size = 0;
937 td_new->files = NULL;
938 }
939
940 job_add_num = numjobs - 1;
941
942 if (add_job(td_new, jobname, job_add_num))
943 goto err;
944 }
945
946 return 0;
947err:
948 put_job(td);
949 return -1;
950}
951
952/*
953 * Parse as if 'o' was a command line
954 */
955void add_job_opts(const char **o)
956{
957 struct thread_data *td, *td_parent;
958 int i, in_global = 1;
959 char jobname[32];
960
961 i = 0;
962 td_parent = td = NULL;
963 while (o[i]) {
964 if (!strncmp(o[i], "name", 4)) {
965 in_global = 0;
966 if (td)
967 add_job(td, jobname, 0);
968 td = NULL;
969 sprintf(jobname, "%s", o[i] + 5);
970 }
971 if (in_global && !td_parent)
972 td_parent = get_new_job(1, &def_thread, 0);
973 else if (!in_global && !td) {
974 if (!td_parent)
975 td_parent = &def_thread;
976 td = get_new_job(0, td_parent, 0);
977 }
978 if (in_global)
979 fio_options_parse(td_parent, (char **) &o[i], 1);
980 else
981 fio_options_parse(td, (char **) &o[i], 1);
982 i++;
983 }
984
985 if (td)
986 add_job(td, jobname, 0);
987}
988
989static int skip_this_section(const char *name)
990{
991 int i;
992
993 if (!nr_job_sections)
994 return 0;
995 if (!strncmp(name, "global", 6))
996 return 0;
997
998 for (i = 0; i < nr_job_sections; i++)
999 if (!strcmp(job_sections[i], name))
1000 return 0;
1001
1002 return 1;
1003}
1004
1005static int is_empty_or_comment(char *line)
1006{
1007 unsigned int i;
1008
1009 for (i = 0; i < strlen(line); i++) {
1010 if (line[i] == ';')
1011 return 1;
1012 if (line[i] == '#')
1013 return 1;
1014 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1015 return 0;
1016 }
1017
1018 return 1;
1019}
1020
1021/*
1022 * This is our [ini] type file parser.
1023 */
1024int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1025{
1026 unsigned int global;
1027 struct thread_data *td;
1028 char *string, *name;
1029 FILE *f;
1030 char *p;
1031 int ret = 0, stonewall;
1032 int first_sect = 1;
1033 int skip_fgets = 0;
1034 int inside_skip = 0;
1035 char **opts;
1036 int i, alloc_opts, num_opts;
1037
1038 if (is_buf)
1039 f = NULL;
1040 else {
1041 if (!strcmp(file, "-"))
1042 f = stdin;
1043 else
1044 f = fopen(file, "r");
1045
1046 if (!f) {
1047 perror("fopen job file");
1048 return 1;
1049 }
1050 }
1051
1052 string = malloc(4096);
1053
1054 /*
1055 * it's really 256 + small bit, 280 should suffice
1056 */
1057 name = malloc(280);
1058 memset(name, 0, 280);
1059
1060 alloc_opts = 8;
1061 opts = malloc(sizeof(char *) * alloc_opts);
1062 num_opts = 0;
1063
1064 stonewall = stonewall_flag;
1065 do {
1066 /*
1067 * if skip_fgets is set, we already have loaded a line we
1068 * haven't handled.
1069 */
1070 if (!skip_fgets) {
1071 if (is_buf)
1072 p = strsep(&file, "\n");
1073 else
1074 p = fgets(string, 4096, f);
1075 if (!p)
1076 break;
1077 }
1078
1079 skip_fgets = 0;
1080 strip_blank_front(&p);
1081 strip_blank_end(p);
1082
1083 if (is_empty_or_comment(p))
1084 continue;
1085 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1086 if (inside_skip)
1087 continue;
1088 log_err("fio: option <%s> outside of [] job section\n",
1089 p);
1090 break;
1091 }
1092
1093 name[strlen(name) - 1] = '\0';
1094
1095 if (skip_this_section(name)) {
1096 inside_skip = 1;
1097 continue;
1098 } else
1099 inside_skip = 0;
1100
1101 global = !strncmp(name, "global", 6);
1102
1103 if (dump_cmdline) {
1104 if (first_sect)
1105 log_info("fio ");
1106 if (!global)
1107 log_info("--name=%s ", name);
1108 first_sect = 0;
1109 }
1110
1111 td = get_new_job(global, &def_thread, 0);
1112 if (!td) {
1113 ret = 1;
1114 break;
1115 }
1116
1117 /*
1118 * Seperate multiple job files by a stonewall
1119 */
1120 if (!global && stonewall) {
1121 td->o.stonewall = stonewall;
1122 stonewall = 0;
1123 }
1124
1125 num_opts = 0;
1126 memset(opts, 0, alloc_opts * sizeof(char *));
1127
1128 while (1) {
1129 if (is_buf)
1130 p = strsep(&file, "\n");
1131 else
1132 p = fgets(string, 4096, f);
1133 if (!p)
1134 break;
1135
1136 if (is_empty_or_comment(p))
1137 continue;
1138
1139 strip_blank_front(&p);
1140
1141 /*
1142 * new section, break out and make sure we don't
1143 * fgets() a new line at the top.
1144 */
1145 if (p[0] == '[') {
1146 skip_fgets = 1;
1147 break;
1148 }
1149
1150 strip_blank_end(p);
1151
1152 if (num_opts == alloc_opts) {
1153 alloc_opts <<= 1;
1154 opts = realloc(opts,
1155 alloc_opts * sizeof(char *));
1156 }
1157
1158 opts[num_opts] = strdup(p);
1159 num_opts++;
1160 }
1161
1162 ret = fio_options_parse(td, opts, num_opts);
1163 if (!ret) {
1164 if (dump_cmdline)
1165 for (i = 0; i < num_opts; i++)
1166 log_info("--%s ", opts[i]);
1167
1168 ret = add_job(td, name, 0);
1169 } else {
1170 log_err("fio: job %s dropped\n", name);
1171 put_job(td);
1172 }
1173
1174 for (i = 0; i < num_opts; i++)
1175 free(opts[i]);
1176 num_opts = 0;
1177 } while (!ret);
1178
1179 if (dump_cmdline)
1180 log_info("\n");
1181
1182 i = 0;
1183 while (i < nr_job_sections) {
1184 free(job_sections[i]);
1185 i++;
1186 }
1187
1188 for (i = 0; i < num_opts; i++)
1189 free(opts[i]);
1190
1191 free(string);
1192 free(name);
1193 free(opts);
1194 if (!is_buf && f != stdin)
1195 fclose(f);
1196 return ret;
1197}
1198
1199static int fill_def_thread(void)
1200{
1201 memset(&def_thread, 0, sizeof(def_thread));
1202
1203 fio_getaffinity(getpid(), &def_thread.o.cpumask);
1204 def_thread.o.timeout = def_timeout;
1205 def_thread.o.error_dump = 1;
1206 /*
1207 * fill default options
1208 */
1209 fio_fill_default_options(&def_thread);
1210 return 0;
1211}
1212
1213static void usage(const char *name)
1214{
1215 printf("%s\n", fio_version_string);
1216 printf("%s [options] [job options] <job file(s)>\n", name);
1217 printf(" --debug=options\tEnable debug logging. May be one/more of:\n"
1218 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1219 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1220 printf(" --output\t\tWrite output to file\n");
1221 printf(" --runtime\t\tRuntime in seconds\n");
1222 printf(" --latency-log\t\tGenerate per-job latency logs\n");
1223 printf(" --bandwidth-log\tGenerate per-job bandwidth logs\n");
1224 printf(" --minimal\t\tMinimal (terse) output\n");
1225 printf(" --output-format=x\tOutput format (terse,json,normal)\n");
1226 printf(" --terse-version=x\tSet terse version output format to 'x'\n");
1227 printf(" --version\t\tPrint version info and exit\n");
1228 printf(" --help\t\tPrint this page\n");
1229 printf(" --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1230 " them\n");
1231 printf(" --enghelp=engine\tPrint ioengine help, or list"
1232 " available ioengines\n");
1233 printf(" --enghelp=engine,cmd\tPrint help for an ioengine"
1234 " cmd\n");
1235 printf(" --showcmd\t\tTurn a job file into command line options\n");
1236 printf(" --eta=when\t\tWhen ETA estimate should be printed\n");
1237 printf(" \t\tMay be \"always\", \"never\" or \"auto\"\n");
1238 printf(" --readonly\t\tTurn on safety read-only checks, preventing"
1239 " writes\n");
1240 printf(" --section=name\tOnly run specified section in job file\n");
1241 printf(" --alloc-size=kb\tSet smalloc pool to this size in kb"
1242 " (def 1024)\n");
1243 printf(" --warnings-fatal\tFio parser warnings are fatal\n");
1244 printf(" --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1245 printf(" --server=args\t\tStart a backend fio server\n");
1246 printf(" --daemonize=pidfile\tBackground fio server, write pid to file\n");
1247 printf(" --client=hostname\tTalk to remote backend fio server at hostname\n");
1248 printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1249 printf("\n Jens Axboe <jaxboe@fusionio.com>\n");
1250}
1251
1252#ifdef FIO_INC_DEBUG
1253struct debug_level debug_levels[] = {
1254 { .name = "process", .shift = FD_PROCESS, },
1255 { .name = "file", .shift = FD_FILE, },
1256 { .name = "io", .shift = FD_IO, },
1257 { .name = "mem", .shift = FD_MEM, },
1258 { .name = "blktrace", .shift = FD_BLKTRACE },
1259 { .name = "verify", .shift = FD_VERIFY },
1260 { .name = "random", .shift = FD_RANDOM },
1261 { .name = "parse", .shift = FD_PARSE },
1262 { .name = "diskutil", .shift = FD_DISKUTIL },
1263 { .name = "job", .shift = FD_JOB },
1264 { .name = "mutex", .shift = FD_MUTEX },
1265 { .name = "profile", .shift = FD_PROFILE },
1266 { .name = "time", .shift = FD_TIME },
1267 { .name = "net", .shift = FD_NET },
1268 { .name = NULL, },
1269};
1270
1271static int set_debug(const char *string)
1272{
1273 struct debug_level *dl;
1274 char *p = (char *) string;
1275 char *opt;
1276 int i;
1277
1278 if (!strcmp(string, "?") || !strcmp(string, "help")) {
1279 log_info("fio: dumping debug options:");
1280 for (i = 0; debug_levels[i].name; i++) {
1281 dl = &debug_levels[i];
1282 log_info("%s,", dl->name);
1283 }
1284 log_info("all\n");
1285 return 1;
1286 }
1287
1288 while ((opt = strsep(&p, ",")) != NULL) {
1289 int found = 0;
1290
1291 if (!strncmp(opt, "all", 3)) {
1292 log_info("fio: set all debug options\n");
1293 fio_debug = ~0UL;
1294 continue;
1295 }
1296
1297 for (i = 0; debug_levels[i].name; i++) {
1298 dl = &debug_levels[i];
1299 found = !strncmp(opt, dl->name, strlen(dl->name));
1300 if (!found)
1301 continue;
1302
1303 if (dl->shift == FD_JOB) {
1304 opt = strchr(opt, ':');
1305 if (!opt) {
1306 log_err("fio: missing job number\n");
1307 break;
1308 }
1309 opt++;
1310 fio_debug_jobno = atoi(opt);
1311 log_info("fio: set debug jobno %d\n",
1312 fio_debug_jobno);
1313 } else {
1314 log_info("fio: set debug option %s\n", opt);
1315 fio_debug |= (1UL << dl->shift);
1316 }
1317 break;
1318 }
1319
1320 if (!found)
1321 log_err("fio: debug mask %s not found\n", opt);
1322 }
1323 return 0;
1324}
1325#else
1326static int set_debug(const char *string)
1327{
1328 log_err("fio: debug tracing not included in build\n");
1329 return 1;
1330}
1331#endif
1332
1333static void fio_options_fill_optstring(void)
1334{
1335 char *ostr = cmd_optstr;
1336 int i, c;
1337
1338 c = i = 0;
1339 while (l_opts[i].name) {
1340 ostr[c++] = l_opts[i].val;
1341 if (l_opts[i].has_arg == required_argument)
1342 ostr[c++] = ':';
1343 else if (l_opts[i].has_arg == optional_argument) {
1344 ostr[c++] = ':';
1345 ostr[c++] = ':';
1346 }
1347 i++;
1348 }
1349 ostr[c] = '\0';
1350}
1351
1352static int client_flag_set(char c)
1353{
1354 int i;
1355
1356 i = 0;
1357 while (l_opts[i].name) {
1358 int val = l_opts[i].val;
1359
1360 if (c == (val & 0xff))
1361 return (val & FIO_CLIENT_FLAG);
1362
1363 i++;
1364 }
1365
1366 return 0;
1367}
1368
1369void parse_cmd_client(void *client, char *opt)
1370{
1371 fio_client_add_cmd_option(client, opt);
1372}
1373
1374int parse_cmd_line(int argc, char *argv[])
1375{
1376 struct thread_data *td = NULL;
1377 int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1378 char *ostr = cmd_optstr;
1379 void *pid_file = NULL;
1380 void *cur_client = NULL;
1381 int backend = 0;
1382
1383 /*
1384 * Reset optind handling, since we may call this multiple times
1385 * for the backend.
1386 */
1387 optind = 1;
1388
1389 while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1390 did_arg = 1;
1391
1392 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1393 parse_cmd_client(cur_client, argv[optind - 1]);
1394 c &= ~FIO_CLIENT_FLAG;
1395 }
1396
1397 switch (c) {
1398 case 'a':
1399 smalloc_pool_size = atoi(optarg);
1400 break;
1401 case 't':
1402 def_timeout = atoi(optarg);
1403 break;
1404 case 'l':
1405 write_lat_log = 1;
1406 break;
1407 case 'b':
1408 write_bw_log = 1;
1409 break;
1410 case 'o':
1411 f_out = fopen(optarg, "w+");
1412 if (!f_out) {
1413 perror("fopen output");
1414 exit(1);
1415 }
1416 f_err = f_out;
1417 break;
1418 case 'm':
1419 output_format = FIO_OUTPUT_TERSE;
1420 break;
1421 case 'F':
1422 if (!strcmp(optarg, "minimal") ||
1423 !strcmp(optarg, "terse") ||
1424 !strcmp(optarg, "csv"))
1425 output_format = FIO_OUTPUT_TERSE;
1426 else if (!strcmp(optarg, "json"))
1427 output_format = FIO_OUTPUT_JSON;
1428 else
1429 output_format = FIO_OUTPUT_NORMAL;
1430 break;
1431 case 'h':
1432 if (!cur_client) {
1433 usage(argv[0]);
1434 do_exit++;
1435 }
1436 break;
1437 case 'c':
1438 if (!cur_client) {
1439 fio_show_option_help(optarg);
1440 do_exit++;
1441 }
1442 break;
1443 case 'i':
1444 if (!cur_client) {
1445 fio_show_ioengine_help(optarg);
1446 do_exit++;
1447 }
1448 break;
1449 case 's':
1450 dump_cmdline = 1;
1451 break;
1452 case 'r':
1453 read_only = 1;
1454 break;
1455 case 'v':
1456 if (!cur_client) {
1457 log_info("%s\n", fio_version_string);
1458 do_exit++;
1459 }
1460 break;
1461 case 'V':
1462 terse_version = atoi(optarg);
1463 if (!(terse_version == 2 || terse_version == 3 ||
1464 terse_version == 4)) {
1465 log_err("fio: bad terse version format\n");
1466 exit_val = 1;
1467 do_exit++;
1468 }
1469 break;
1470 case 'e':
1471 if (!strcmp("always", optarg))
1472 eta_print = FIO_ETA_ALWAYS;
1473 else if (!strcmp("never", optarg))
1474 eta_print = FIO_ETA_NEVER;
1475 break;
1476 case 'd':
1477 if (set_debug(optarg))
1478 do_exit++;
1479 break;
1480 case 'x': {
1481 size_t new_size;
1482
1483 if (!strcmp(optarg, "global")) {
1484 log_err("fio: can't use global as only "
1485 "section\n");
1486 do_exit++;
1487 exit_val = 1;
1488 break;
1489 }
1490 new_size = (nr_job_sections + 1) * sizeof(char *);
1491 job_sections = realloc(job_sections, new_size);
1492 job_sections[nr_job_sections] = strdup(optarg);
1493 nr_job_sections++;
1494 break;
1495 }
1496 case 'p':
1497 exec_profile = strdup(optarg);
1498 break;
1499 case FIO_GETOPT_JOB: {
1500 const char *opt = l_opts[lidx].name;
1501 char *val = optarg;
1502
1503 if (!strncmp(opt, "name", 4) && td) {
1504 ret = add_job(td, td->o.name ?: "fio", 0);
1505 if (ret)
1506 return 0;
1507 td = NULL;
1508 }
1509 if (!td) {
1510 int is_section = !strncmp(opt, "name", 4);
1511 int global = 0;
1512
1513 if (!is_section || !strncmp(val, "global", 6))
1514 global = 1;
1515
1516 if (is_section && skip_this_section(val))
1517 continue;
1518
1519 td = get_new_job(global, &def_thread, 1);
1520 if (!td || ioengine_load(td))
1521 return 0;
1522 fio_options_set_ioengine_opts(l_opts, td);
1523 }
1524
1525 ret = fio_cmd_option_parse(td, opt, val);
1526
1527 if (!ret && !strcmp(opt, "ioengine")) {
1528 free_ioengine(td);
1529 if (ioengine_load(td))
1530 return 0;
1531 fio_options_set_ioengine_opts(l_opts, td);
1532 }
1533 break;
1534 }
1535 case FIO_GETOPT_IOENGINE: {
1536 const char *opt = l_opts[lidx].name;
1537 char *val = optarg;
1538 opt = l_opts[lidx].name;
1539 val = optarg;
1540 ret = fio_cmd_ioengine_option_parse(td, opt, val);
1541 break;
1542 }
1543 case 'w':
1544 warnings_fatal = 1;
1545 break;
1546 case 'j':
1547 max_jobs = atoi(optarg);
1548 if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1549 log_err("fio: invalid max jobs: %d\n", max_jobs);
1550 do_exit++;
1551 exit_val = 1;
1552 }
1553 break;
1554 case 'S':
1555 if (nr_clients) {
1556 log_err("fio: can't be both client and server\n");
1557 do_exit++;
1558 exit_val = 1;
1559 break;
1560 }
1561 if (optarg)
1562 fio_server_set_arg(optarg);
1563 is_backend = 1;
1564 backend = 1;
1565 break;
1566 case 'D':
1567 pid_file = strdup(optarg);
1568 break;
1569 case 'C':
1570 if (is_backend) {
1571 log_err("fio: can't be both client and server\n");
1572 do_exit++;
1573 exit_val = 1;
1574 break;
1575 }
1576 if (fio_client_add(optarg, &cur_client)) {
1577 log_err("fio: failed adding client %s\n", optarg);
1578 do_exit++;
1579 exit_val = 1;
1580 break;
1581 }
1582 /*
1583 * If the next argument exists and isn't an option,
1584 * assume it's a job file for this client only.
1585 */
1586 while (optind < argc) {
1587 if (!strncmp(argv[optind], "--", 2) ||
1588 !strncmp(argv[optind], "-", 1))
1589 break;
1590
1591 fio_client_add_ini_file(cur_client, argv[optind]);
1592 optind++;
1593 }
1594 break;
1595 default:
1596 do_exit++;
1597 exit_val = 1;
1598 break;
1599 }
1600 if (do_exit)
1601 break;
1602 }
1603
1604 if (do_exit) {
1605 if (exit_val && !(is_backend || nr_clients))
1606 exit(exit_val);
1607 }
1608
1609 if (nr_clients && fio_clients_connect()) {
1610 do_exit++;
1611 exit_val = 1;
1612 return -1;
1613 }
1614
1615 if (is_backend && backend)
1616 return fio_start_server(pid_file);
1617
1618 if (td) {
1619 if (!ret)
1620 ret = add_job(td, td->o.name ?: "fio", 0);
1621 }
1622
1623 while (!ret && optind < argc) {
1624 ini_idx++;
1625 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1626 ini_file[ini_idx - 1] = strdup(argv[optind]);
1627 optind++;
1628 }
1629
1630 return ini_idx;
1631}
1632
1633int parse_options(int argc, char *argv[])
1634{
1635 int job_files, i;
1636
1637 f_out = stdout;
1638 f_err = stderr;
1639
1640 fio_options_fill_optstring();
1641 fio_options_dup_and_init(l_opts);
1642
1643 atexit(free_shm);
1644
1645 if (fill_def_thread())
1646 return 1;
1647
1648 job_files = parse_cmd_line(argc, argv);
1649
1650 if (job_files > 0) {
1651 for (i = 0; i < job_files; i++) {
1652 if (fill_def_thread())
1653 return 1;
1654 if (nr_clients) {
1655 if (fio_clients_send_ini(ini_file[i]))
1656 return 1;
1657 free(ini_file[i]);
1658 } else if (!is_backend) {
1659 if (parse_jobs_ini(ini_file[i], 0, i))
1660 return 1;
1661 free(ini_file[i]);
1662 }
1663 }
1664 } else if (nr_clients) {
1665 if (fill_def_thread())
1666 return 1;
1667 if (fio_clients_send_ini(NULL))
1668 return 1;
1669 }
1670
1671 free(ini_file);
1672 fio_options_free(&def_thread);
1673
1674 if (!thread_number) {
1675 if (dump_cmdline)
1676 return 0;
1677 if (exec_profile)
1678 return 0;
1679 if (is_backend || nr_clients)
1680 return 0;
1681 if (did_arg)
1682 return 0;
1683
1684 log_err("No jobs(s) defined\n\n");
1685
1686 if (!did_arg) {
1687 usage(argv[0]);
1688 return 1;
1689 }
1690
1691 return 0;
1692 }
1693
1694 if (def_thread.o.gtod_offload) {
1695 fio_gtod_init();
1696 fio_gtod_offload = 1;
1697 fio_gtod_cpu = def_thread.o.gtod_cpu;
1698 }
1699
1700 if (output_format == FIO_OUTPUT_NORMAL)
1701 log_info("%s\n", fio_version_string);
1702
1703 return 0;
1704}
fio - Flexible IO Tester