client: use temp buffer for single output flush for json/disk util
[fio.git] / init.c
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 <ctype.h>
8 #include <string.h>
9 #include <errno.h>
10 #include <sys/ipc.h>
11 #include <sys/types.h>
12 #include <dlfcn.h>
13 #ifdef CONFIG_VALGRIND_DEV
14 #include <valgrind/drd.h>
15 #else
16 #define DRD_IGNORE_VAR(x) do { } while (0)
17 #endif
18
19 #include "fio.h"
20 #ifndef FIO_NO_HAVE_SHM_H
21 #include <sys/shm.h>
22 #endif
23
24 #include "parse.h"
25 #include "smalloc.h"
26 #include "filehash.h"
27 #include "verify.h"
28 #include "profile.h"
29 #include "server.h"
30 #include "idletime.h"
31 #include "filelock.h"
32 #include "steadystate.h"
33
34 #include "oslib/getopt.h"
35 #include "oslib/strcasestr.h"
36
37 #include "crc/test.h"
38 #include "lib/pow2.h"
39 #include "lib/memcpy.h"
40
41 const char fio_version_string[] = FIO_VERSION;
42
43 #define FIO_RANDSEED            (0xb1899bedUL)
44
45 static char **ini_file;
46 static int max_jobs = FIO_MAX_JOBS;
47 static int dump_cmdline;
48 static int parse_only;
49
50 static struct thread_data def_thread;
51 struct thread_data *threads = NULL;
52 static char **job_sections;
53 static int nr_job_sections;
54
55 int exitall_on_terminate = 0;
56 int output_format = FIO_OUTPUT_NORMAL;
57 int eta_print = FIO_ETA_AUTO;
58 unsigned int eta_interval_msec = 1000;
59 int eta_new_line = 0;
60 FILE *f_out = NULL;
61 FILE *f_err = NULL;
62 char *exec_profile = NULL;
63 int warnings_fatal = 0;
64 int terse_version = 3;
65 int is_backend = 0;
66 int is_local_backend = 0;
67 int nr_clients = 0;
68 int log_syslog = 0;
69
70 int write_bw_log = 0;
71 int read_only = 0;
72 int status_interval = 0;
73
74 char *trigger_file = NULL;
75 long long trigger_timeout = 0;
76 char *trigger_cmd = NULL;
77 char *trigger_remote_cmd = NULL;
78
79 char *aux_path = NULL;
80
81 static int prev_group_jobs;
82
83 unsigned long fio_debug = 0;
84 unsigned int fio_debug_jobno = -1;
85 unsigned int *fio_debug_jobp = NULL;
86 unsigned int *fio_warned = NULL;
87
88 static char cmd_optstr[256];
89 static bool did_arg;
90
91 #define FIO_CLIENT_FLAG         (1 << 16)
92
93 /*
94  * Command line options. These will contain the above, plus a few
95  * extra that only pertain to fio itself and not jobs.
96  */
97 static struct option l_opts[FIO_NR_OPTIONS] = {
98         {
99                 .name           = (char *) "output",
100                 .has_arg        = required_argument,
101                 .val            = 'o' | FIO_CLIENT_FLAG,
102         },
103         {
104                 .name           = (char *) "latency-log",
105                 .has_arg        = required_argument,
106                 .val            = 'l' | FIO_CLIENT_FLAG,
107         },
108         {
109                 .name           = (char *) "bandwidth-log",
110                 .has_arg        = no_argument,
111                 .val            = 'b' | FIO_CLIENT_FLAG,
112         },
113         {
114                 .name           = (char *) "minimal",
115                 .has_arg        = no_argument,
116                 .val            = 'm' | FIO_CLIENT_FLAG,
117         },
118         {
119                 .name           = (char *) "output-format",
120                 .has_arg        = required_argument,
121                 .val            = 'F' | FIO_CLIENT_FLAG,
122         },
123         {
124                 .name           = (char *) "append-terse",
125                 .has_arg        = optional_argument,
126                 .val            = 'f',
127         },
128         {
129                 .name           = (char *) "version",
130                 .has_arg        = no_argument,
131                 .val            = 'v' | FIO_CLIENT_FLAG,
132         },
133         {
134                 .name           = (char *) "help",
135                 .has_arg        = no_argument,
136                 .val            = 'h' | FIO_CLIENT_FLAG,
137         },
138         {
139                 .name           = (char *) "cmdhelp",
140                 .has_arg        = optional_argument,
141                 .val            = 'c' | FIO_CLIENT_FLAG,
142         },
143         {
144                 .name           = (char *) "enghelp",
145                 .has_arg        = optional_argument,
146                 .val            = 'i' | FIO_CLIENT_FLAG,
147         },
148         {
149                 .name           = (char *) "showcmd",
150                 .has_arg        = no_argument,
151                 .val            = 's' | FIO_CLIENT_FLAG,
152         },
153         {
154                 .name           = (char *) "readonly",
155                 .has_arg        = no_argument,
156                 .val            = 'r' | FIO_CLIENT_FLAG,
157         },
158         {
159                 .name           = (char *) "eta",
160                 .has_arg        = required_argument,
161                 .val            = 'e' | FIO_CLIENT_FLAG,
162         },
163         {
164                 .name           = (char *) "eta-interval",
165                 .has_arg        = required_argument,
166                 .val            = 'O' | FIO_CLIENT_FLAG,
167         },
168         {
169                 .name           = (char *) "eta-newline",
170                 .has_arg        = required_argument,
171                 .val            = 'E' | FIO_CLIENT_FLAG,
172         },
173         {
174                 .name           = (char *) "debug",
175                 .has_arg        = required_argument,
176                 .val            = 'd' | FIO_CLIENT_FLAG,
177         },
178         {
179                 .name           = (char *) "parse-only",
180                 .has_arg        = no_argument,
181                 .val            = 'P' | FIO_CLIENT_FLAG,
182         },
183         {
184                 .name           = (char *) "section",
185                 .has_arg        = required_argument,
186                 .val            = 'x' | FIO_CLIENT_FLAG,
187         },
188 #ifdef CONFIG_ZLIB
189         {
190                 .name           = (char *) "inflate-log",
191                 .has_arg        = required_argument,
192                 .val            = 'X' | FIO_CLIENT_FLAG,
193         },
194 #endif
195         {
196                 .name           = (char *) "alloc-size",
197                 .has_arg        = required_argument,
198                 .val            = 'a' | FIO_CLIENT_FLAG,
199         },
200         {
201                 .name           = (char *) "profile",
202                 .has_arg        = required_argument,
203                 .val            = 'p' | FIO_CLIENT_FLAG,
204         },
205         {
206                 .name           = (char *) "warnings-fatal",
207                 .has_arg        = no_argument,
208                 .val            = 'w' | FIO_CLIENT_FLAG,
209         },
210         {
211                 .name           = (char *) "max-jobs",
212                 .has_arg        = required_argument,
213                 .val            = 'j' | FIO_CLIENT_FLAG,
214         },
215         {
216                 .name           = (char *) "terse-version",
217                 .has_arg        = required_argument,
218                 .val            = 'V' | FIO_CLIENT_FLAG,
219         },
220         {
221                 .name           = (char *) "server",
222                 .has_arg        = optional_argument,
223                 .val            = 'S',
224         },
225         {       .name           = (char *) "daemonize",
226                 .has_arg        = required_argument,
227                 .val            = 'D',
228         },
229         {
230                 .name           = (char *) "client",
231                 .has_arg        = required_argument,
232                 .val            = 'C',
233         },
234         {
235                 .name           = (char *) "remote-config",
236                 .has_arg        = required_argument,
237                 .val            = 'R',
238         },
239         {
240                 .name           = (char *) "cpuclock-test",
241                 .has_arg        = no_argument,
242                 .val            = 'T',
243         },
244         {
245                 .name           = (char *) "crctest",
246                 .has_arg        = optional_argument,
247                 .val            = 'G',
248         },
249         {
250                 .name           = (char *) "memcpytest",
251                 .has_arg        = optional_argument,
252                 .val            = 'M',
253         },
254         {
255                 .name           = (char *) "idle-prof",
256                 .has_arg        = required_argument,
257                 .val            = 'I',
258         },
259         {
260                 .name           = (char *) "status-interval",
261                 .has_arg        = required_argument,
262                 .val            = 'L' | FIO_CLIENT_FLAG,
263         },
264         {
265                 .name           = (char *) "trigger-file",
266                 .has_arg        = required_argument,
267                 .val            = 'W',
268         },
269         {
270                 .name           = (char *) "trigger-timeout",
271                 .has_arg        = required_argument,
272                 .val            = 'B',
273         },
274         {
275                 .name           = (char *) "trigger",
276                 .has_arg        = required_argument,
277                 .val            = 'H',
278         },
279         {
280                 .name           = (char *) "trigger-remote",
281                 .has_arg        = required_argument,
282                 .val            = 'J',
283         },
284         {
285                 .name           = (char *) "aux-path",
286                 .has_arg        = required_argument,
287                 .val            = 'K',
288         },
289         {
290                 .name           = NULL,
291         },
292 };
293
294 void free_threads_shm(void)
295 {
296         if (threads) {
297                 void *tp = threads;
298 #ifndef CONFIG_NO_SHM
299                 struct shmid_ds sbuf;
300
301                 threads = NULL;
302                 shmdt(tp);
303                 shmctl(shm_id, IPC_RMID, &sbuf);
304                 shm_id = -1;
305 #else
306                 threads = NULL;
307                 free(tp);
308 #endif
309         }
310 }
311
312 static void free_shm(void)
313 {
314         if (threads) {
315                 flow_exit();
316                 fio_debug_jobp = NULL;
317                 fio_warned = NULL;
318                 free_threads_shm();
319         }
320
321         free(trigger_file);
322         free(trigger_cmd);
323         free(trigger_remote_cmd);
324         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
325
326         options_free(fio_options, &def_thread.o);
327         fio_filelock_exit();
328         file_hash_exit();
329         scleanup();
330 }
331
332 /*
333  * The thread area is shared between the main process and the job
334  * threads/processes. So setup a shared memory segment that will hold
335  * all the job info. We use the end of the region for keeping track of
336  * open files across jobs, for file sharing.
337  */
338 static int setup_thread_area(void)
339 {
340         int i;
341
342         if (threads)
343                 return 0;
344
345         /*
346          * 1024 is too much on some machines, scale max_jobs if
347          * we get a failure that looks like too large a shm segment
348          */
349         do {
350                 size_t size = max_jobs * sizeof(struct thread_data);
351
352                 size += 2 * sizeof(unsigned int);
353
354 #ifndef CONFIG_NO_SHM
355                 shm_id = shmget(0, size, IPC_CREAT | 0600);
356                 if (shm_id != -1)
357                         break;
358                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
359                         perror("shmget");
360                         break;
361                 }
362 #else
363                 threads = malloc(size);
364                 if (threads)
365                         break;
366 #endif
367
368                 max_jobs >>= 1;
369         } while (max_jobs);
370
371 #ifndef CONFIG_NO_SHM
372         if (shm_id == -1)
373                 return 1;
374
375         threads = shmat(shm_id, NULL, 0);
376         if (threads == (void *) -1) {
377                 perror("shmat");
378                 return 1;
379         }
380         if (shm_attach_to_open_removed())
381                 shmctl(shm_id, IPC_RMID, NULL);
382 #endif
383
384         memset(threads, 0, max_jobs * sizeof(struct thread_data));
385         for (i = 0; i < max_jobs; i++)
386                 DRD_IGNORE_VAR(threads[i]);
387         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
388         *fio_debug_jobp = -1;
389         fio_warned = fio_debug_jobp + 1;
390         *fio_warned = 0;
391
392         flow_init();
393
394         return 0;
395 }
396
397 static void dump_print_option(struct print_option *p)
398 {
399         const char *delim;
400
401         if (!strcmp("description", p->name))
402                 delim = "\"";
403         else
404                 delim = "";
405
406         log_info("--%s%s", p->name, p->value ? "" : " ");
407         if (p->value)
408                 log_info("=%s%s%s ", delim, p->value, delim);
409 }
410
411 static void dump_opt_list(struct thread_data *td)
412 {
413         struct flist_head *entry;
414         struct print_option *p;
415
416         if (flist_empty(&td->opt_list))
417                 return;
418
419         flist_for_each(entry, &td->opt_list) {
420                 p = flist_entry(entry, struct print_option, list);
421                 dump_print_option(p);
422         }
423 }
424
425 static void fio_dump_options_free(struct thread_data *td)
426 {
427         while (!flist_empty(&td->opt_list)) {
428                 struct print_option *p;
429
430                 p = flist_first_entry(&td->opt_list, struct print_option, list);
431                 flist_del_init(&p->list);
432                 free(p->name);
433                 free(p->value);
434                 free(p);
435         }
436 }
437
438 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
439 {
440         struct flist_head *entry;
441
442         if (flist_empty(&src->opt_list))
443                 return;
444
445         flist_for_each(entry, &src->opt_list) {
446                 struct print_option *srcp, *dstp;
447
448                 srcp = flist_entry(entry, struct print_option, list);
449                 dstp = malloc(sizeof(*dstp));
450                 dstp->name = strdup(srcp->name);
451                 if (srcp->value)
452                         dstp->value = strdup(srcp->value);
453                 else
454                         dstp->value = NULL;
455                 flist_add_tail(&dstp->list, &dst->opt_list);
456         }
457 }
458
459 /*
460  * Return a free job structure.
461  */
462 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
463                                        bool preserve_eo, const char *jobname)
464 {
465         struct thread_data *td;
466
467         if (global)
468                 return &def_thread;
469         if (setup_thread_area()) {
470                 log_err("error: failed to setup shm segment\n");
471                 return NULL;
472         }
473         if (thread_number >= max_jobs) {
474                 log_err("error: maximum number of jobs (%d) reached.\n",
475                                 max_jobs);
476                 return NULL;
477         }
478
479         td = &threads[thread_number++];
480         *td = *parent;
481
482         INIT_FLIST_HEAD(&td->opt_list);
483         if (parent != &def_thread)
484                 copy_opt_list(td, parent);
485
486         td->io_ops = NULL;
487         td->io_ops_init = 0;
488         if (!preserve_eo)
489                 td->eo = NULL;
490
491         td->o.uid = td->o.gid = -1U;
492
493         dup_files(td, parent);
494         fio_options_mem_dupe(td);
495
496         profile_add_hooks(td);
497
498         td->thread_number = thread_number;
499         td->subjob_number = 0;
500
501         if (jobname)
502                 td->o.name = strdup(jobname);
503
504         if (!parent->o.group_reporting || parent == &def_thread)
505                 stat_number++;
506
507         return td;
508 }
509
510 static void put_job(struct thread_data *td)
511 {
512         if (td == &def_thread)
513                 return;
514
515         profile_td_exit(td);
516         flow_exit_job(td);
517
518         if (td->error)
519                 log_info("fio: %s\n", td->verror);
520
521         fio_options_free(td);
522         fio_dump_options_free(td);
523         if (td->io_ops)
524                 free_ioengine(td);
525
526         if (td->o.name)
527                 free(td->o.name);
528
529         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
530         thread_number--;
531 }
532
533 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
534 {
535         unsigned long long bs = td->o.min_bs[ddir];
536
537         assert(ddir_rw(ddir));
538
539         if (td->o.rate[ddir])
540                 td->rate_bps[ddir] = td->o.rate[ddir];
541         else
542                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
543
544         if (!td->rate_bps[ddir]) {
545                 log_err("rate lower than supported\n");
546                 return -1;
547         }
548
549         td->rate_next_io_time[ddir] = 0;
550         td->rate_io_issue_bytes[ddir] = 0;
551         td->last_usec[ddir] = 0;
552         return 0;
553 }
554
555 static int setup_rate(struct thread_data *td)
556 {
557         int ret = 0;
558
559         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
560                 ret = __setup_rate(td, DDIR_READ);
561         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
562                 ret |= __setup_rate(td, DDIR_WRITE);
563         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
564                 ret |= __setup_rate(td, DDIR_TRIM);
565
566         return ret;
567 }
568
569 static int fixed_block_size(struct thread_options *o)
570 {
571         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
572                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
573                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
574                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
575                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
576 }
577
578 /*
579  * <3 Johannes
580  */
581 static unsigned int gcd(unsigned int m, unsigned int n)
582 {
583         if (!n)
584                 return m;
585
586         return gcd(n, m % n);
587 }
588
589 /*
590  * Lazy way of fixing up options that depend on each other. We could also
591  * define option callback handlers, but this is easier.
592  */
593 static int fixup_options(struct thread_data *td)
594 {
595         struct thread_options *o = &td->o;
596         int ret = 0;
597
598         if (read_only && (td_write(td) || td_trim(td))) {
599                 log_err("fio: trim and write operations are not allowed"
600                          " with the --readonly parameter.\n");
601                 ret |= 1;
602         }
603
604 #ifndef CONFIG_PSHARED
605         if (!o->use_thread) {
606                 log_info("fio: this platform does not support process shared"
607                          " mutexes, forcing use of threads. Use the 'thread'"
608                          " option to get rid of this warning.\n");
609                 o->use_thread = 1;
610                 ret |= warnings_fatal;
611         }
612 #endif
613
614         if (o->write_iolog_file && o->read_iolog_file) {
615                 log_err("fio: read iolog overrides write_iolog\n");
616                 free(o->write_iolog_file);
617                 o->write_iolog_file = NULL;
618                 ret |= warnings_fatal;
619         }
620
621         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
622                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
623                 ret |= 1;
624         }
625
626         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
627                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
628                 ret |= 1;
629         }
630
631         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
632                 if (o->zone_size)
633                         o->zone_mode = ZONE_MODE_STRIDED;
634                 else
635                         o->zone_mode = ZONE_MODE_NONE;
636         }
637
638         /*
639          * Strided zone mode only really works with 1 file.
640          */
641         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
642                 o->zone_mode = ZONE_MODE_NONE;
643
644         /*
645          * If zone_range isn't specified, backward compatibility dictates it
646          * should be made equal to zone_size.
647          */
648         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
649                 o->zone_range = o->zone_size;
650
651         /*
652          * Reads can do overwrites, we always need to pre-create the file
653          */
654         if (td_read(td))
655                 o->overwrite = 1;
656
657         if (!o->min_bs[DDIR_READ])
658                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
659         if (!o->max_bs[DDIR_READ])
660                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
661         if (!o->min_bs[DDIR_WRITE])
662                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
663         if (!o->max_bs[DDIR_WRITE])
664                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
665         if (!o->min_bs[DDIR_TRIM])
666                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
667         if (!o->max_bs[DDIR_TRIM])
668                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
669
670         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
671         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
672
673         /*
674          * For random IO, allow blockalign offset other than min_bs.
675          */
676         if (!o->ba[DDIR_READ] || !td_random(td))
677                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
678         if (!o->ba[DDIR_WRITE] || !td_random(td))
679                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
680         if (!o->ba[DDIR_TRIM] || !td_random(td))
681                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
682
683         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
684             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
685             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
686             !o->norandommap) {
687                 log_err("fio: Any use of blockalign= turns off randommap\n");
688                 o->norandommap = 1;
689                 ret |= warnings_fatal;
690         }
691
692         if (!o->file_size_high)
693                 o->file_size_high = o->file_size_low;
694
695         if (o->start_delay_high) {
696                 if (!o->start_delay_orig)
697                         o->start_delay_orig = o->start_delay;
698                 o->start_delay = rand_between(&td->delay_state,
699                                                 o->start_delay_orig,
700                                                 o->start_delay_high);
701         }
702
703         if (o->norandommap && o->verify != VERIFY_NONE
704             && !fixed_block_size(o))  {
705                 log_err("fio: norandommap given for variable block sizes, "
706                         "verify limited\n");
707                 ret |= warnings_fatal;
708         }
709         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
710                 log_err("fio: bs_unaligned may not work with raw io\n");
711
712         /*
713          * thinktime_spin must be less than thinktime
714          */
715         if (o->thinktime_spin > o->thinktime)
716                 o->thinktime_spin = o->thinktime;
717
718         /*
719          * The low water mark cannot be bigger than the iodepth
720          */
721         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
722                 o->iodepth_low = o->iodepth;
723
724         /*
725          * If batch number isn't set, default to the same as iodepth
726          */
727         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
728                 o->iodepth_batch = o->iodepth;
729
730         /*
731          * If max batch complete number isn't set or set incorrectly,
732          * default to the same as iodepth_batch_complete_min
733          */
734         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
735                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
736
737         /*
738          * There's no need to check for in-flight overlapping IOs if the job
739          * isn't changing data or the maximum iodepth is guaranteed to be 1
740          */
741         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
742             (!(td_write(td) || td_trim(td)) || o->iodepth == 1))
743                 o->serialize_overlap = 0;
744         /*
745          * Currently can't check for overlaps in offload mode
746          */
747         if (o->serialize_overlap && o->io_submit_mode == IO_MODE_OFFLOAD) {
748                 log_err("fio: checking for in-flight overlaps when the "
749                         "io_submit_mode is offload is not supported\n");
750                 o->serialize_overlap = 0;
751                 ret |= warnings_fatal;
752         }
753
754         if (o->nr_files > td->files_index)
755                 o->nr_files = td->files_index;
756
757         if (o->open_files > o->nr_files || !o->open_files)
758                 o->open_files = o->nr_files;
759
760         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
761             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
762             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
763             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
764                 log_err("fio: rate and rate_iops are mutually exclusive\n");
765                 ret |= 1;
766         }
767         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
768             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
769             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
770             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
771             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
772             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
773                 log_err("fio: minimum rate exceeds rate\n");
774                 ret |= 1;
775         }
776
777         if (!o->timeout && o->time_based) {
778                 log_err("fio: time_based requires a runtime/timeout setting\n");
779                 o->time_based = 0;
780                 ret |= warnings_fatal;
781         }
782
783         if (o->fill_device && !o->size)
784                 o->size = -1ULL;
785
786         if (o->verify != VERIFY_NONE) {
787                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
788                     (o->filename ||
789                      !(o->unique_filename &&
790                        strstr(o->filename_format, "$jobname") &&
791                        strstr(o->filename_format, "$jobnum") &&
792                        strstr(o->filename_format, "$filenum")))) {
793                         log_info("fio: multiple writers may overwrite blocks "
794                                 "that belong to other jobs. This can cause "
795                                 "verification failures.\n");
796                         ret |= warnings_fatal;
797                 }
798
799                 /*
800                  * Warn if verification is requested but no verification of any
801                  * kind can be started due to time constraints
802                  */
803                 if (td_write(td) && o->do_verify && o->timeout &&
804                     o->time_based && !td_read(td) && !o->verify_backlog) {
805                         log_info("fio: verification read phase will never "
806                                  "start because write phase uses all of "
807                                  "runtime\n");
808                         ret |= warnings_fatal;
809                 }
810
811                 if (!fio_option_is_set(o, refill_buffers))
812                         o->refill_buffers = 1;
813
814                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
815                     !o->verify_interval)
816                         o->verify_interval = o->min_bs[DDIR_WRITE];
817
818                 /*
819                  * Verify interval must be smaller or equal to the
820                  * write size.
821                  */
822                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
823                         o->verify_interval = o->min_bs[DDIR_WRITE];
824                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
825                         o->verify_interval = o->min_bs[DDIR_READ];
826
827                 /*
828                  * Verify interval must be a factor of both min and max
829                  * write size
830                  */
831                 if (!o->verify_interval ||
832                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
833                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
834                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
835                                                         o->max_bs[DDIR_WRITE]);
836         }
837
838         if (o->pre_read) {
839                 if (o->invalidate_cache)
840                         o->invalidate_cache = 0;
841                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
842                         log_info("fio: cannot pre-read files with an IO engine"
843                                  " that isn't seekable. Pre-read disabled.\n");
844                         ret |= warnings_fatal;
845                 }
846         }
847
848         if (o->unit_base == N2S_NONE) {
849                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
850                         o->unit_base = N2S_BITPERSEC;
851                 else
852                         o->unit_base = N2S_BYTEPERSEC;
853         }
854
855 #ifndef FIO_HAVE_ANY_FALLOCATE
856         /* Platform doesn't support any fallocate so force it to none */
857         o->fallocate_mode = FIO_FALLOCATE_NONE;
858 #endif
859
860 #ifndef CONFIG_FDATASYNC
861         if (o->fdatasync_blocks) {
862                 log_info("fio: this platform does not support fdatasync()"
863                          " falling back to using fsync().  Use the 'fsync'"
864                          " option instead of 'fdatasync' to get rid of"
865                          " this warning\n");
866                 o->fsync_blocks = o->fdatasync_blocks;
867                 o->fdatasync_blocks = 0;
868                 ret |= warnings_fatal;
869         }
870 #endif
871
872 #ifdef WIN32
873         /*
874          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
875          * so fail if we're passed those flags
876          */
877         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
878                 log_err("fio: Windows does not support direct or non-buffered io with"
879                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
880                                 " with 'direct=1' and 'iodepth=1' instead.\n");
881                 ret |= 1;
882         }
883 #endif
884
885         /*
886          * For fully compressible data, just zero them at init time.
887          * It's faster than repeatedly filling it. For non-zero
888          * compression, we should have refill_buffers set. Set it, unless
889          * the job file already changed it.
890          */
891         if (o->compress_percentage) {
892                 if (o->compress_percentage == 100) {
893                         o->zero_buffers = 1;
894                         o->compress_percentage = 0;
895                 } else if (!fio_option_is_set(o, refill_buffers)) {
896                         o->refill_buffers = 1;
897                         td->flags |= TD_F_REFILL_BUFFERS;
898                 }
899         }
900
901         /*
902          * Using a non-uniform random distribution excludes usage of
903          * a random map
904          */
905         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
906                 o->norandommap = 1;
907
908         /*
909          * If size is set but less than the min block size, complain
910          */
911         if (o->size && o->size < td_min_bs(td)) {
912                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
913                         (unsigned long long) o->size, td_min_bs(td));
914                 ret |= 1;
915         }
916
917         /*
918          * O_ATOMIC implies O_DIRECT
919          */
920         if (o->oatomic)
921                 o->odirect = 1;
922
923         /*
924          * If randseed is set, that overrides randrepeat
925          */
926         if (fio_option_is_set(o, rand_seed))
927                 o->rand_repeatable = 0;
928
929         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
930                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
931                 ret |= 1;
932         }
933
934         if (fio_option_is_set(o, gtod_cpu)) {
935                 fio_gtod_init();
936                 fio_gtod_set_cpu(o->gtod_cpu);
937                 fio_gtod_offload = 1;
938         }
939
940         td->loops = o->loops;
941         if (!td->loops)
942                 td->loops = 1;
943
944         if (o->block_error_hist && o->nr_files != 1) {
945                 log_err("fio: block error histogram only available "
946                         "with a single file per job, but %d files "
947                         "provided\n", o->nr_files);
948                 ret |= 1;
949         }
950
951         if (fio_option_is_set(o, clat_percentiles) &&
952             !fio_option_is_set(o, lat_percentiles)) {
953                 o->lat_percentiles = !o->clat_percentiles;
954         } else if (fio_option_is_set(o, lat_percentiles) &&
955                    !fio_option_is_set(o, clat_percentiles)) {
956                 o->clat_percentiles = !o->lat_percentiles;
957         } else if (fio_option_is_set(o, lat_percentiles) &&
958                    fio_option_is_set(o, clat_percentiles) &&
959                    o->lat_percentiles && o->clat_percentiles) {
960                 log_err("fio: lat_percentiles and clat_percentiles are "
961                         "mutually exclusive\n");
962                 ret |= 1;
963         }
964
965         if (o->disable_lat)
966                 o->lat_percentiles = 0;
967         if (o->disable_clat)
968                 o->clat_percentiles = 0;
969
970         /*
971          * Fix these up to be nsec internally
972          */
973         o->max_latency *= 1000ULL;
974         o->latency_target *= 1000ULL;
975         o->latency_window *= 1000ULL;
976
977         return ret;
978 }
979
980 static void init_rand_file_service(struct thread_data *td)
981 {
982         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
983         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
984
985         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
986                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
987                 zipf_disable_hash(&td->next_file_zipf);
988         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
989                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
990                 zipf_disable_hash(&td->next_file_zipf);
991         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
992                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
993                 gauss_disable_hash(&td->next_file_gauss);
994         }
995 }
996
997 void td_fill_verify_state_seed(struct thread_data *td)
998 {
999         bool use64;
1000
1001         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1002                 use64 = true;
1003         else
1004                 use64 = false;
1005
1006         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
1007                 use64);
1008 }
1009
1010 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
1011 {
1012         unsigned int read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
1013         unsigned int write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
1014         unsigned int trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
1015         int i;
1016
1017         /*
1018          * trimwrite is special in that we need to generate the same
1019          * offsets to get the "write after trim" effect. If we are
1020          * using bssplit to set buffer length distributions, ensure that
1021          * we seed the trim and write generators identically. Ditto for
1022          * verify, read and writes must have the same seed, if we are doing
1023          * read verify.
1024          */
1025         if (td->o.verify != VERIFY_NONE)
1026                 write_seed = read_seed;
1027         if (td_trimwrite(td))
1028                 trim_seed = write_seed;
1029         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1030         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1031         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1032
1033         td_fill_verify_state_seed(td);
1034         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1035
1036         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1037                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1038         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1039                 init_rand_file_service(td);
1040
1041         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1042         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1043         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1044         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1045         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1046         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1047         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1048         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1049
1050         if (!td_random(td))
1051                 return;
1052
1053         if (td->o.rand_repeatable)
1054                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1055
1056         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1057
1058         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1059                 struct frand_state *s = &td->seq_rand_state[i];
1060
1061                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1062         }
1063 }
1064
1065 void td_fill_rand_seeds(struct thread_data *td)
1066 {
1067         bool use64;
1068
1069         if (td->o.allrand_repeatable) {
1070                 unsigned int i;
1071
1072                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1073                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1074                                 + i;
1075         }
1076
1077         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1078                 use64 = true;
1079         else
1080                 use64 = false;
1081
1082         td_fill_rand_seeds_internal(td, use64);
1083
1084         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1085         frand_copy(&td->buf_state_prev, &td->buf_state);
1086 }
1087
1088 /*
1089  * Initializes the ioengine configured for a job, if it has not been done so
1090  * already.
1091  */
1092 int ioengine_load(struct thread_data *td)
1093 {
1094         if (!td->o.ioengine) {
1095                 log_err("fio: internal fault, no IO engine specified\n");
1096                 return 1;
1097         }
1098
1099         if (td->io_ops) {
1100                 struct ioengine_ops *ops;
1101                 void *dlhandle;
1102
1103                 /* An engine is loaded, but the requested ioengine
1104                  * may have changed.
1105                  */
1106                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1107                         /* The right engine is already loaded */
1108                         return 0;
1109                 }
1110
1111                 /*
1112                  * Name of file and engine may be different, load ops
1113                  * for this name and see if they match. If they do, then
1114                  * the engine is unchanged.
1115                  */
1116                 dlhandle = td->io_ops_dlhandle;
1117                 ops = load_ioengine(td);
1118                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1119                         if (dlhandle)
1120                                 dlclose(dlhandle);
1121                         return 0;
1122                 }
1123
1124                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1125                         dlclose(dlhandle);
1126
1127                 /* Unload the old engine. */
1128                 free_ioengine(td);
1129         }
1130
1131         td->io_ops = load_ioengine(td);
1132         if (!td->io_ops) {
1133                 log_err("fio: failed to load engine\n");
1134                 return 1;
1135         }
1136
1137         if (td->io_ops->option_struct_size && td->io_ops->options) {
1138                 /*
1139                  * In cases where td->eo is set, clone it for a child thread.
1140                  * This requires that the parent thread has the same ioengine,
1141                  * but that requirement must be enforced by the code which
1142                  * cloned the thread.
1143                  */
1144                 void *origeo = td->eo;
1145                 /*
1146                  * Otherwise use the default thread options.
1147                  */
1148                 if (!origeo && td != &def_thread && def_thread.eo &&
1149                     def_thread.io_ops->options == td->io_ops->options)
1150                         origeo = def_thread.eo;
1151
1152                 options_init(td->io_ops->options);
1153                 td->eo = malloc(td->io_ops->option_struct_size);
1154                 /*
1155                  * Use the default thread as an option template if this uses the
1156                  * same options structure and there are non-default options
1157                  * used.
1158                  */
1159                 if (origeo) {
1160                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1161                         options_mem_dupe(td->io_ops->options, td->eo);
1162                 } else {
1163                         memset(td->eo, 0, td->io_ops->option_struct_size);
1164                         fill_default_options(td->eo, td->io_ops->options);
1165                 }
1166                 *(struct thread_data **)td->eo = td;
1167         }
1168
1169         if (td->o.odirect)
1170                 td->io_ops->flags |= FIO_RAWIO;
1171
1172         td_set_ioengine_flags(td);
1173         return 0;
1174 }
1175
1176 static void init_flags(struct thread_data *td)
1177 {
1178         struct thread_options *o = &td->o;
1179         int i;
1180
1181         if (o->verify_backlog)
1182                 td->flags |= TD_F_VER_BACKLOG;
1183         if (o->trim_backlog)
1184                 td->flags |= TD_F_TRIM_BACKLOG;
1185         if (o->read_iolog_file)
1186                 td->flags |= TD_F_READ_IOLOG;
1187         if (o->refill_buffers)
1188                 td->flags |= TD_F_REFILL_BUFFERS;
1189         /*
1190          * Always scramble buffers if asked to
1191          */
1192         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1193                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1194         /*
1195          * But also scramble buffers, unless we were explicitly asked
1196          * to zero them.
1197          */
1198         if (o->scramble_buffers && !(o->zero_buffers &&
1199             fio_option_is_set(o, zero_buffers)))
1200                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1201         if (o->verify != VERIFY_NONE)
1202                 td->flags |= TD_F_DO_VERIFY;
1203
1204         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1205                 td->flags |= TD_F_NEED_LOCK;
1206
1207         if (o->mem_type == MEM_CUDA_MALLOC)
1208                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1209
1210         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1211                 if (option_check_rate(td, i)) {
1212                         td->flags |= TD_F_CHECK_RATE;
1213                         break;
1214                 }
1215         }
1216 }
1217
1218 static int setup_random_seeds(struct thread_data *td)
1219 {
1220         unsigned long seed;
1221         unsigned int i;
1222
1223         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1224                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1225                 if (!ret)
1226                         td_fill_rand_seeds(td);
1227                 return ret;
1228         }
1229
1230         seed = td->o.rand_seed;
1231         for (i = 0; i < 4; i++)
1232                 seed *= 0x9e370001UL;
1233
1234         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1235                 td->rand_seeds[i] = seed * td->thread_number + i;
1236                 seed *= 0x9e370001UL;
1237         }
1238
1239         td_fill_rand_seeds(td);
1240         return 0;
1241 }
1242
1243 enum {
1244         FPRE_NONE = 0,
1245         FPRE_JOBNAME,
1246         FPRE_JOBNUM,
1247         FPRE_FILENUM
1248 };
1249
1250 static struct fpre_keyword {
1251         const char *keyword;
1252         size_t strlen;
1253         int key;
1254 } fpre_keywords[] = {
1255         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1256         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1257         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1258         { .keyword = NULL, },
1259         };
1260
1261 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1262                            const char *jobname, int jobnum, int filenum)
1263 {
1264         struct fpre_keyword *f;
1265         char copy[PATH_MAX];
1266         size_t dst_left = PATH_MAX - 1;
1267
1268         if (!o->filename_format || !strlen(o->filename_format)) {
1269                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1270                 return buf;
1271         }
1272
1273         for (f = &fpre_keywords[0]; f->keyword; f++)
1274                 f->strlen = strlen(f->keyword);
1275
1276         buf[buf_size - 1] = '\0';
1277         strncpy(buf, o->filename_format, buf_size - 1);
1278
1279         memset(copy, 0, sizeof(copy));
1280         for (f = &fpre_keywords[0]; f->keyword; f++) {
1281                 do {
1282                         size_t pre_len, post_start = 0;
1283                         char *str, *dst = copy;
1284
1285                         str = strcasestr(buf, f->keyword);
1286                         if (!str)
1287                                 break;
1288
1289                         pre_len = str - buf;
1290                         if (strlen(str) != f->strlen)
1291                                 post_start = pre_len + f->strlen;
1292
1293                         if (pre_len) {
1294                                 strncpy(dst, buf, pre_len);
1295                                 dst += pre_len;
1296                                 dst_left -= pre_len;
1297                         }
1298
1299                         switch (f->key) {
1300                         case FPRE_JOBNAME: {
1301                                 int ret;
1302
1303                                 ret = snprintf(dst, dst_left, "%s", jobname);
1304                                 if (ret < 0)
1305                                         break;
1306                                 else if (ret > dst_left) {
1307                                         log_err("fio: truncated filename\n");
1308                                         dst += dst_left;
1309                                         dst_left = 0;
1310                                 } else {
1311                                         dst += ret;
1312                                         dst_left -= ret;
1313                                 }
1314                                 break;
1315                                 }
1316                         case FPRE_JOBNUM: {
1317                                 int ret;
1318
1319                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1320                                 if (ret < 0)
1321                                         break;
1322                                 else if (ret > dst_left) {
1323                                         log_err("fio: truncated filename\n");
1324                                         dst += dst_left;
1325                                         dst_left = 0;
1326                                 } else {
1327                                         dst += ret;
1328                                         dst_left -= ret;
1329                                 }
1330                                 break;
1331                                 }
1332                         case FPRE_FILENUM: {
1333                                 int ret;
1334
1335                                 ret = snprintf(dst, dst_left, "%d", filenum);
1336                                 if (ret < 0)
1337                                         break;
1338                                 else if (ret > dst_left) {
1339                                         log_err("fio: truncated filename\n");
1340                                         dst += dst_left;
1341                                         dst_left = 0;
1342                                 } else {
1343                                         dst += ret;
1344                                         dst_left -= ret;
1345                                 }
1346                                 break;
1347                                 }
1348                         default:
1349                                 assert(0);
1350                                 break;
1351                         }
1352
1353                         if (post_start)
1354                                 strncpy(dst, buf + post_start, dst_left);
1355
1356                         strncpy(buf, copy, buf_size - 1);
1357                 } while (1);
1358         }
1359
1360         return buf;
1361 }
1362
1363 bool parse_dryrun(void)
1364 {
1365         return dump_cmdline || parse_only;
1366 }
1367
1368 static void gen_log_name(char *name, size_t size, const char *logtype,
1369                          const char *logname, unsigned int num,
1370                          const char *suf, int per_job)
1371 {
1372         if (per_job)
1373                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1374         else
1375                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1376 }
1377
1378 static int check_waitees(char *waitee)
1379 {
1380         struct thread_data *td;
1381         int i, ret = 0;
1382
1383         for_each_td(td, i) {
1384                 if (td->subjob_number)
1385                         continue;
1386
1387                 ret += !strcmp(td->o.name, waitee);
1388         }
1389
1390         return ret;
1391 }
1392
1393 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1394 {
1395         int nw;
1396
1397         if (!o->wait_for)
1398                 return true;
1399
1400         if (!strcmp(jobname, o->wait_for)) {
1401                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1402                                 jobname, o->wait_for);
1403                 return false;
1404         }
1405
1406         if (!(nw = check_waitees(o->wait_for))) {
1407                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1408                 return false;
1409         }
1410
1411         if (nw > 1) {
1412                 log_err("%s: multiple waitees %s found,\n"
1413                         "please avoid duplicates when using wait_for option.\n",
1414                                 jobname, o->wait_for);
1415                 return false;
1416         }
1417
1418         return true;
1419 }
1420
1421 /*
1422  * Treat an empty log file name the same as a one not given
1423  */
1424 static const char *make_log_name(const char *logname, const char *jobname)
1425 {
1426         if (logname && strcmp(logname, ""))
1427                 return logname;
1428
1429         return jobname;
1430 }
1431
1432 /*
1433  * Adds a job to the list of things todo. Sanitizes the various options
1434  * to make sure we don't have conflicts, and initializes various
1435  * members of td.
1436  */
1437 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1438                    int recursed, int client_type)
1439 {
1440         unsigned int i;
1441         char fname[PATH_MAX];
1442         int numjobs, file_alloced;
1443         struct thread_options *o = &td->o;
1444         char logname[PATH_MAX + 32];
1445
1446         /*
1447          * the def_thread is just for options, it's not a real job
1448          */
1449         if (td == &def_thread)
1450                 return 0;
1451
1452         init_flags(td);
1453
1454         /*
1455          * if we are just dumping the output command line, don't add the job
1456          */
1457         if (parse_dryrun()) {
1458                 put_job(td);
1459                 return 0;
1460         }
1461
1462         td->client_type = client_type;
1463
1464         if (profile_td_init(td))
1465                 goto err;
1466
1467         if (ioengine_load(td))
1468                 goto err;
1469
1470         file_alloced = 0;
1471         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1472                 file_alloced = 1;
1473
1474                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1475                         add_file(td, jobname, job_add_num, 0);
1476                 else {
1477                         for (i = 0; i < o->nr_files; i++)
1478                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1479                 }
1480         }
1481
1482         if (setup_random_seeds(td)) {
1483                 td_verror(td, errno, "setup_random_seeds");
1484                 goto err;
1485         }
1486
1487         if (fixup_options(td))
1488                 goto err;
1489
1490         /*
1491          * Belongs to fixup_options, but o->name is not necessarily set as yet
1492          */
1493         if (!wait_for_ok(jobname, o))
1494                 goto err;
1495
1496         flow_init_job(td);
1497
1498         /*
1499          * IO engines only need this for option callbacks, and the address may
1500          * change in subprocesses.
1501          */
1502         if (td->eo)
1503                 *(struct thread_data **)td->eo = NULL;
1504
1505         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1506                 struct fio_file *f;
1507
1508                 for_each_file(td, f, i)
1509                         f->real_file_size = -1ULL;
1510         }
1511
1512         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1513
1514         td->ts.clat_percentiles = o->clat_percentiles;
1515         td->ts.lat_percentiles = o->lat_percentiles;
1516         td->ts.percentile_precision = o->percentile_precision;
1517         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1518         td->ts.sig_figs = o->sig_figs;
1519
1520         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1521                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1522                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1523                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1524                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1525                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1526         }
1527         td->ts.sync_stat.min_val = ULONG_MAX;
1528         td->ddir_seq_nr = o->ddir_seq_nr;
1529
1530         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1531                 prev_group_jobs = 0;
1532                 groupid++;
1533                 if (groupid == INT_MAX) {
1534                         log_err("fio: too many groups defined\n");
1535                         goto err;
1536                 }
1537         }
1538
1539         td->groupid = groupid;
1540         prev_group_jobs++;
1541
1542         if (setup_rate(td))
1543                 goto err;
1544
1545         if (o->write_lat_log) {
1546                 struct log_params p = {
1547                         .td = td,
1548                         .avg_msec = o->log_avg_msec,
1549                         .hist_msec = o->log_hist_msec,
1550                         .hist_coarseness = o->log_hist_coarseness,
1551                         .log_type = IO_LOG_TYPE_LAT,
1552                         .log_offset = o->log_offset,
1553                         .log_gz = o->log_gz,
1554                         .log_gz_store = o->log_gz_store,
1555                 };
1556                 const char *pre = make_log_name(o->lat_log_file, o->name);
1557                 const char *suf;
1558
1559                 if (p.log_gz_store)
1560                         suf = "log.fz";
1561                 else
1562                         suf = "log";
1563
1564                 gen_log_name(logname, sizeof(logname), "lat", pre,
1565                                 td->thread_number, suf, o->per_job_logs);
1566                 setup_log(&td->lat_log, &p, logname);
1567
1568                 gen_log_name(logname, sizeof(logname), "slat", pre,
1569                                 td->thread_number, suf, o->per_job_logs);
1570                 setup_log(&td->slat_log, &p, logname);
1571
1572                 gen_log_name(logname, sizeof(logname), "clat", pre,
1573                                 td->thread_number, suf, o->per_job_logs);
1574                 setup_log(&td->clat_log, &p, logname);
1575
1576         }
1577
1578         if (o->write_hist_log) {
1579                 struct log_params p = {
1580                         .td = td,
1581                         .avg_msec = o->log_avg_msec,
1582                         .hist_msec = o->log_hist_msec,
1583                         .hist_coarseness = o->log_hist_coarseness,
1584                         .log_type = IO_LOG_TYPE_HIST,
1585                         .log_offset = o->log_offset,
1586                         .log_gz = o->log_gz,
1587                         .log_gz_store = o->log_gz_store,
1588                 };
1589                 const char *pre = make_log_name(o->hist_log_file, o->name);
1590                 const char *suf;
1591
1592 #ifndef CONFIG_ZLIB
1593                 if (td->client_type) {
1594                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1595                         goto err;
1596                 }
1597 #endif
1598
1599                 if (p.log_gz_store)
1600                         suf = "log.fz";
1601                 else
1602                         suf = "log";
1603
1604                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1605                                 td->thread_number, suf, o->per_job_logs);
1606                 setup_log(&td->clat_hist_log, &p, logname);
1607         }
1608
1609         if (o->write_bw_log) {
1610                 struct log_params p = {
1611                         .td = td,
1612                         .avg_msec = o->log_avg_msec,
1613                         .hist_msec = o->log_hist_msec,
1614                         .hist_coarseness = o->log_hist_coarseness,
1615                         .log_type = IO_LOG_TYPE_BW,
1616                         .log_offset = o->log_offset,
1617                         .log_gz = o->log_gz,
1618                         .log_gz_store = o->log_gz_store,
1619                 };
1620                 const char *pre = make_log_name(o->bw_log_file, o->name);
1621                 const char *suf;
1622
1623                 if (fio_option_is_set(o, bw_avg_time))
1624                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1625                 else
1626                         o->bw_avg_time = p.avg_msec;
1627
1628                 p.hist_msec = o->log_hist_msec;
1629                 p.hist_coarseness = o->log_hist_coarseness;
1630
1631                 if (p.log_gz_store)
1632                         suf = "log.fz";
1633                 else
1634                         suf = "log";
1635
1636                 gen_log_name(logname, sizeof(logname), "bw", pre,
1637                                 td->thread_number, suf, o->per_job_logs);
1638                 setup_log(&td->bw_log, &p, logname);
1639         }
1640         if (o->write_iops_log) {
1641                 struct log_params p = {
1642                         .td = td,
1643                         .avg_msec = o->log_avg_msec,
1644                         .hist_msec = o->log_hist_msec,
1645                         .hist_coarseness = o->log_hist_coarseness,
1646                         .log_type = IO_LOG_TYPE_IOPS,
1647                         .log_offset = o->log_offset,
1648                         .log_gz = o->log_gz,
1649                         .log_gz_store = o->log_gz_store,
1650                 };
1651                 const char *pre = make_log_name(o->iops_log_file, o->name);
1652                 const char *suf;
1653
1654                 if (fio_option_is_set(o, iops_avg_time))
1655                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1656                 else
1657                         o->iops_avg_time = p.avg_msec;
1658
1659                 p.hist_msec = o->log_hist_msec;
1660                 p.hist_coarseness = o->log_hist_coarseness;
1661
1662                 if (p.log_gz_store)
1663                         suf = "log.fz";
1664                 else
1665                         suf = "log";
1666
1667                 gen_log_name(logname, sizeof(logname), "iops", pre,
1668                                 td->thread_number, suf, o->per_job_logs);
1669                 setup_log(&td->iops_log, &p, logname);
1670         }
1671
1672         if (!o->name)
1673                 o->name = strdup(jobname);
1674
1675         if (output_format & FIO_OUTPUT_NORMAL) {
1676                 if (!job_add_num) {
1677                         if (is_backend && !recursed)
1678                                 fio_server_send_add_job(td);
1679
1680                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1681                                 char *c1, *c2, *c3, *c4;
1682                                 char *c5 = NULL, *c6 = NULL;
1683                                 int i2p = is_power_of_2(o->kb_base);
1684                                 struct buf_output out;
1685
1686                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1687                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1688                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1689                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1690
1691                                 if (!o->bs_is_seq_rand) {
1692                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1693                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1694                                 }
1695
1696                                 buf_output_init(&out);
1697                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1698                                                         td->groupid,
1699                                                         ddir_str(o->td_ddir));
1700
1701                                 if (o->bs_is_seq_rand)
1702                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1703                                                         c1, c2, c3, c4);
1704                                 else
1705                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1706                                                         c1, c2, c3, c4, c5, c6);
1707
1708                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1709                                                 td->io_ops->name, o->iodepth);
1710                                 log_info_buf(out.buf, out.buflen);
1711                                 buf_output_free(&out);
1712
1713                                 free(c1);
1714                                 free(c2);
1715                                 free(c3);
1716                                 free(c4);
1717                                 free(c5);
1718                                 free(c6);
1719                         }
1720                 } else if (job_add_num == 1)
1721                         log_info("...\n");
1722         }
1723
1724         if (td_steadystate_init(td))
1725                 goto err;
1726
1727         /*
1728          * recurse add identical jobs, clear numjobs and stonewall options
1729          * as they don't apply to sub-jobs
1730          */
1731         numjobs = o->numjobs;
1732         while (--numjobs) {
1733                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1734
1735                 if (!td_new)
1736                         goto err;
1737
1738                 td_new->o.numjobs = 1;
1739                 td_new->o.stonewall = 0;
1740                 td_new->o.new_group = 0;
1741                 td_new->subjob_number = numjobs;
1742                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1743                 td_new->o.ss_limit = o->ss_limit;
1744
1745                 if (file_alloced) {
1746                         if (td_new->files) {
1747                                 struct fio_file *f;
1748                                 for_each_file(td_new, f, i) {
1749                                         if (f->file_name)
1750                                                 sfree(f->file_name);
1751                                         sfree(f);
1752                                 }
1753                                 free(td_new->files);
1754                                 td_new->files = NULL;
1755                         }
1756                         td_new->files_index = 0;
1757                         td_new->files_size = 0;
1758                         if (td_new->o.filename) {
1759                                 free(td_new->o.filename);
1760                                 td_new->o.filename = NULL;
1761                         }
1762                 }
1763
1764                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1765                         goto err;
1766         }
1767
1768         return 0;
1769 err:
1770         put_job(td);
1771         return -1;
1772 }
1773
1774 /*
1775  * Parse as if 'o' was a command line
1776  */
1777 void add_job_opts(const char **o, int client_type)
1778 {
1779         struct thread_data *td, *td_parent;
1780         int i, in_global = 1;
1781         char jobname[32];
1782
1783         i = 0;
1784         td_parent = td = NULL;
1785         while (o[i]) {
1786                 if (!strncmp(o[i], "name", 4)) {
1787                         in_global = 0;
1788                         if (td)
1789                                 add_job(td, jobname, 0, 0, client_type);
1790                         td = NULL;
1791                         sprintf(jobname, "%s", o[i] + 5);
1792                 }
1793                 if (in_global && !td_parent)
1794                         td_parent = get_new_job(true, &def_thread, false, jobname);
1795                 else if (!in_global && !td) {
1796                         if (!td_parent)
1797                                 td_parent = &def_thread;
1798                         td = get_new_job(false, td_parent, false, jobname);
1799                 }
1800                 if (in_global)
1801                         fio_options_parse(td_parent, (char **) &o[i], 1);
1802                 else
1803                         fio_options_parse(td, (char **) &o[i], 1);
1804                 i++;
1805         }
1806
1807         if (td)
1808                 add_job(td, jobname, 0, 0, client_type);
1809 }
1810
1811 static int skip_this_section(const char *name)
1812 {
1813         int i;
1814
1815         if (!nr_job_sections)
1816                 return 0;
1817         if (!strncmp(name, "global", 6))
1818                 return 0;
1819
1820         for (i = 0; i < nr_job_sections; i++)
1821                 if (!strcmp(job_sections[i], name))
1822                         return 0;
1823
1824         return 1;
1825 }
1826
1827 static int is_empty_or_comment(char *line)
1828 {
1829         unsigned int i;
1830
1831         for (i = 0; i < strlen(line); i++) {
1832                 if (line[i] == ';')
1833                         return 1;
1834                 if (line[i] == '#')
1835                         return 1;
1836                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1837                         return 0;
1838         }
1839
1840         return 1;
1841 }
1842
1843 /*
1844  * This is our [ini] type file parser.
1845  */
1846 static int __parse_jobs_ini(struct thread_data *td,
1847                 char *file, int is_buf, int stonewall_flag, int type,
1848                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1849 {
1850         bool global = false;
1851         char *string;
1852         FILE *f;
1853         char *p;
1854         int ret = 0, stonewall;
1855         int first_sect = 1;
1856         int skip_fgets = 0;
1857         int inside_skip = 0;
1858         char **opts;
1859         int i, alloc_opts, num_opts;
1860
1861         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1862         assert(td || !nested);
1863
1864         if (is_buf)
1865                 f = NULL;
1866         else {
1867                 if (!strcmp(file, "-"))
1868                         f = stdin;
1869                 else
1870                         f = fopen(file, "r");
1871
1872                 if (!f) {
1873                         int __err = errno;
1874
1875                         log_err("fio: unable to open '%s' job file\n", file);
1876                         if (td)
1877                                 td_verror(td, __err, "job file open");
1878                         return 1;
1879                 }
1880         }
1881
1882         string = malloc(4096);
1883
1884         /*
1885          * it's really 256 + small bit, 280 should suffice
1886          */
1887         if (!nested) {
1888                 name = malloc(280);
1889                 memset(name, 0, 280);
1890         }
1891
1892         opts = NULL;
1893         if (nested && popts) {
1894                 opts = *popts;
1895                 alloc_opts = *aopts;
1896                 num_opts = *nopts;
1897         }
1898
1899         if (!opts) {
1900                 alloc_opts = 8;
1901                 opts = malloc(sizeof(char *) * alloc_opts);
1902                 num_opts = 0;
1903         }
1904
1905         stonewall = stonewall_flag;
1906         do {
1907                 /*
1908                  * if skip_fgets is set, we already have loaded a line we
1909                  * haven't handled.
1910                  */
1911                 if (!skip_fgets) {
1912                         if (is_buf)
1913                                 p = strsep(&file, "\n");
1914                         else
1915                                 p = fgets(string, 4096, f);
1916                         if (!p)
1917                                 break;
1918                 }
1919
1920                 skip_fgets = 0;
1921                 strip_blank_front(&p);
1922                 strip_blank_end(p);
1923
1924                 dprint(FD_PARSE, "%s\n", p);
1925                 if (is_empty_or_comment(p))
1926                         continue;
1927
1928                 if (!nested) {
1929                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1930                                 if (inside_skip)
1931                                         continue;
1932
1933                                 log_err("fio: option <%s> outside of "
1934                                         "[] job section\n", p);
1935                                 ret = 1;
1936                                 break;
1937                         }
1938
1939                         name[strlen(name) - 1] = '\0';
1940
1941                         if (skip_this_section(name)) {
1942                                 inside_skip = 1;
1943                                 continue;
1944                         } else
1945                                 inside_skip = 0;
1946
1947                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1948
1949                         global = !strncmp(name, "global", 6);
1950
1951                         if (dump_cmdline) {
1952                                 if (first_sect)
1953                                         log_info("fio ");
1954                                 if (!global)
1955                                         log_info("--name=%s ", name);
1956                                 first_sect = 0;
1957                         }
1958
1959                         td = get_new_job(global, &def_thread, false, name);
1960                         if (!td) {
1961                                 ret = 1;
1962                                 break;
1963                         }
1964
1965                         /*
1966                          * Separate multiple job files by a stonewall
1967                          */
1968                         if (!global && stonewall) {
1969                                 td->o.stonewall = stonewall;
1970                                 stonewall = 0;
1971                         }
1972
1973                         num_opts = 0;
1974                         memset(opts, 0, alloc_opts * sizeof(char *));
1975                 }
1976                 else
1977                         skip_fgets = 1;
1978
1979                 while (1) {
1980                         if (!skip_fgets) {
1981                                 if (is_buf)
1982                                         p = strsep(&file, "\n");
1983                                 else
1984                                         p = fgets(string, 4096, f);
1985                                 if (!p)
1986                                         break;
1987                                 dprint(FD_PARSE, "%s", p);
1988                         }
1989                         else
1990                                 skip_fgets = 0;
1991
1992                         if (is_empty_or_comment(p))
1993                                 continue;
1994
1995                         strip_blank_front(&p);
1996
1997                         /*
1998                          * new section, break out and make sure we don't
1999                          * fgets() a new line at the top.
2000                          */
2001                         if (p[0] == '[') {
2002                                 if (nested) {
2003                                         log_err("No new sections in included files\n");
2004                                         ret = 1;
2005                                         goto out;
2006                                 }
2007
2008                                 skip_fgets = 1;
2009                                 break;
2010                         }
2011
2012                         strip_blank_end(p);
2013
2014                         if (!strncmp(p, "include", strlen("include"))) {
2015                                 char *filename = p + strlen("include") + 1,
2016                                         *ts, *full_fn = NULL;
2017
2018                                 /*
2019                                  * Allow for the include filename
2020                                  * specification to be relative.
2021                                  */
2022                                 if (access(filename, F_OK) &&
2023                                     (ts = strrchr(file, '/'))) {
2024                                         int len = ts - file +
2025                                                 strlen(filename) + 2;
2026
2027                                         if (!(full_fn = calloc(1, len))) {
2028                                                 ret = ENOMEM;
2029                                                 break;
2030                                         }
2031
2032                                         strncpy(full_fn,
2033                                                 file, (ts - file) + 1);
2034                                         strncpy(full_fn + (ts - file) + 1,
2035                                                 filename, strlen(filename));
2036                                         full_fn[len - 1] = 0;
2037                                         filename = full_fn;
2038                                 }
2039
2040                                 ret = __parse_jobs_ini(td, filename, is_buf,
2041                                                        stonewall_flag, type, 1,
2042                                                        name, &opts,
2043                                                        &alloc_opts, &num_opts);
2044
2045                                 if (ret) {
2046                                         log_err("Error %d while parsing "
2047                                                 "include file %s\n",
2048                                                 ret, filename);
2049                                 }
2050
2051                                 if (full_fn)
2052                                         free(full_fn);
2053
2054                                 if (ret)
2055                                         break;
2056
2057                                 continue;
2058                         }
2059
2060                         if (num_opts == alloc_opts) {
2061                                 alloc_opts <<= 1;
2062                                 opts = realloc(opts,
2063                                                 alloc_opts * sizeof(char *));
2064                         }
2065
2066                         opts[num_opts] = strdup(p);
2067                         num_opts++;
2068                 }
2069
2070                 if (nested) {
2071                         *popts = opts;
2072                         *aopts = alloc_opts;
2073                         *nopts = num_opts;
2074                         goto out;
2075                 }
2076
2077                 ret = fio_options_parse(td, opts, num_opts);
2078                 if (!ret) {
2079                         if (dump_cmdline)
2080                                 dump_opt_list(td);
2081
2082                         ret = add_job(td, name, 0, 0, type);
2083                 } else {
2084                         log_err("fio: job %s dropped\n", name);
2085                         put_job(td);
2086                 }
2087
2088                 for (i = 0; i < num_opts; i++)
2089                         free(opts[i]);
2090                 num_opts = 0;
2091         } while (!ret);
2092
2093         if (dump_cmdline)
2094                 log_info("\n");
2095
2096         i = 0;
2097         while (i < nr_job_sections) {
2098                 free(job_sections[i]);
2099                 i++;
2100         }
2101
2102         free(opts);
2103 out:
2104         free(string);
2105         if (!nested)
2106                 free(name);
2107         if (!is_buf && f != stdin)
2108                 fclose(f);
2109         return ret;
2110 }
2111
2112 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2113 {
2114         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2115                         0, NULL, NULL, NULL, NULL);
2116 }
2117
2118 static int fill_def_thread(void)
2119 {
2120         memset(&def_thread, 0, sizeof(def_thread));
2121         INIT_FLIST_HEAD(&def_thread.opt_list);
2122
2123         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2124         def_thread.o.error_dump = 1;
2125
2126         /*
2127          * fill default options
2128          */
2129         fio_fill_default_options(&def_thread);
2130         return 0;
2131 }
2132
2133 static void show_debug_categories(void)
2134 {
2135 #ifdef FIO_INC_DEBUG
2136         const struct debug_level *dl = &debug_levels[0];
2137         int curlen, first = 1;
2138
2139         curlen = 0;
2140         while (dl->name) {
2141                 int has_next = (dl + 1)->name != NULL;
2142
2143                 if (first || curlen + strlen(dl->name) >= 80) {
2144                         if (!first) {
2145                                 printf("\n");
2146                                 curlen = 0;
2147                         }
2148                         curlen += printf("\t\t\t%s", dl->name);
2149                         curlen += 3 * (8 - 1);
2150                         if (has_next)
2151                                 curlen += printf(",");
2152                 } else {
2153                         curlen += printf("%s", dl->name);
2154                         if (has_next)
2155                                 curlen += printf(",");
2156                 }
2157                 dl++;
2158                 first = 0;
2159         }
2160         printf("\n");
2161 #endif
2162 }
2163
2164 /*
2165  * Following options aren't printed by usage().
2166  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2167  * --latency-log - Deprecated option.
2168  */
2169 static void usage(const char *name)
2170 {
2171         printf("%s\n", fio_version_string);
2172         printf("%s [options] [job options] <job file(s)>\n", name);
2173         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2174         show_debug_categories();
2175         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2176         printf("  --output\t\tWrite output to file\n");
2177         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2178         printf("  --minimal\t\tMinimal (terse) output\n");
2179         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2180         printf("  --terse-version=type\tSet terse version output format"
2181                 " (default 3, or 2 or 4)\n");
2182         printf("  --version\t\tPrint version info and exit\n");
2183         printf("  --help\t\tPrint this page\n");
2184         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2185         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2186         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2187                 " them\n");
2188         printf("  --enghelp=engine\tPrint ioengine help, or list"
2189                 " available ioengines\n");
2190         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2191                 " cmd\n");
2192         printf("  --showcmd\t\tTurn a job file into command line options\n");
2193         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2194         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2195         printf("  --eta-newline=t\tForce a new line for every 't'");
2196         printf(" period passed\n");
2197         printf("  --status-interval=t\tForce full status dump every");
2198         printf(" 't' period passed\n");
2199         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2200                 " writes\n");
2201         printf("  --section=name\tOnly run specified section in job file,"
2202                 " multiple sections can be specified\n");
2203         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2204                 " (def 16384)\n");
2205         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2206         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2207         printf("  --server=args\t\tStart a backend fio server\n");
2208         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2209         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2210         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2211         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2212                 "\t\t\t(option=system,percpu) or run unit work\n"
2213                 "\t\t\tcalibration only (option=calibrate)\n");
2214 #ifdef CONFIG_ZLIB
2215         printf("  --inflate-log=log\tInflate and output compressed log\n");
2216 #endif
2217         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2218         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2219         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2220         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2221         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2222         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2223 }
2224
2225 #ifdef FIO_INC_DEBUG
2226 const struct debug_level debug_levels[] = {
2227         { .name = "process",
2228           .help = "Process creation/exit logging",
2229           .shift = FD_PROCESS,
2230         },
2231         { .name = "file",
2232           .help = "File related action logging",
2233           .shift = FD_FILE,
2234         },
2235         { .name = "io",
2236           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2237           .shift = FD_IO,
2238         },
2239         { .name = "mem",
2240           .help = "Memory allocation/freeing logging",
2241           .shift = FD_MEM,
2242         },
2243         { .name = "blktrace",
2244           .help = "blktrace action logging",
2245           .shift = FD_BLKTRACE,
2246         },
2247         { .name = "verify",
2248           .help = "IO verification action logging",
2249           .shift = FD_VERIFY,
2250         },
2251         { .name = "random",
2252           .help = "Random generation logging",
2253           .shift = FD_RANDOM,
2254         },
2255         { .name = "parse",
2256           .help = "Parser logging",
2257           .shift = FD_PARSE,
2258         },
2259         { .name = "diskutil",
2260           .help = "Disk utility logging actions",
2261           .shift = FD_DISKUTIL,
2262         },
2263         { .name = "job",
2264           .help = "Logging related to creating/destroying jobs",
2265           .shift = FD_JOB,
2266         },
2267         { .name = "mutex",
2268           .help = "Mutex logging",
2269           .shift = FD_MUTEX
2270         },
2271         { .name = "profile",
2272           .help = "Logging related to profiles",
2273           .shift = FD_PROFILE,
2274         },
2275         { .name = "time",
2276           .help = "Logging related to time keeping functions",
2277           .shift = FD_TIME,
2278         },
2279         { .name = "net",
2280           .help = "Network logging",
2281           .shift = FD_NET,
2282         },
2283         { .name = "rate",
2284           .help = "Rate logging",
2285           .shift = FD_RATE,
2286         },
2287         { .name = "compress",
2288           .help = "Log compression logging",
2289           .shift = FD_COMPRESS,
2290         },
2291         { .name = "steadystate",
2292           .help = "Steady state detection logging",
2293           .shift = FD_STEADYSTATE,
2294         },
2295         { .name = "helperthread",
2296           .help = "Helper thread logging",
2297           .shift = FD_HELPERTHREAD,
2298         },
2299         { .name = "zbd",
2300           .help = "Zoned Block Device logging",
2301           .shift = FD_ZBD,
2302         },
2303         { .name = NULL, },
2304 };
2305
2306 static int set_debug(const char *string)
2307 {
2308         const struct debug_level *dl;
2309         char *p = (char *) string;
2310         char *opt;
2311         int i;
2312
2313         if (!string)
2314                 return 0;
2315
2316         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2317                 log_info("fio: dumping debug options:");
2318                 for (i = 0; debug_levels[i].name; i++) {
2319                         dl = &debug_levels[i];
2320                         log_info("%s,", dl->name);
2321                 }
2322                 log_info("all\n");
2323                 return 1;
2324         }
2325
2326         while ((opt = strsep(&p, ",")) != NULL) {
2327                 int found = 0;
2328
2329                 if (!strncmp(opt, "all", 3)) {
2330                         log_info("fio: set all debug options\n");
2331                         fio_debug = ~0UL;
2332                         continue;
2333                 }
2334
2335                 for (i = 0; debug_levels[i].name; i++) {
2336                         dl = &debug_levels[i];
2337                         found = !strncmp(opt, dl->name, strlen(dl->name));
2338                         if (!found)
2339                                 continue;
2340
2341                         if (dl->shift == FD_JOB) {
2342                                 opt = strchr(opt, ':');
2343                                 if (!opt) {
2344                                         log_err("fio: missing job number\n");
2345                                         break;
2346                                 }
2347                                 opt++;
2348                                 fio_debug_jobno = atoi(opt);
2349                                 log_info("fio: set debug jobno %d\n",
2350                                                         fio_debug_jobno);
2351                         } else {
2352                                 log_info("fio: set debug option %s\n", opt);
2353                                 fio_debug |= (1UL << dl->shift);
2354                         }
2355                         break;
2356                 }
2357
2358                 if (!found)
2359                         log_err("fio: debug mask %s not found\n", opt);
2360         }
2361         return 0;
2362 }
2363 #else
2364 static int set_debug(const char *string)
2365 {
2366         log_err("fio: debug tracing not included in build\n");
2367         return 1;
2368 }
2369 #endif
2370
2371 static void fio_options_fill_optstring(void)
2372 {
2373         char *ostr = cmd_optstr;
2374         int i, c;
2375
2376         c = i = 0;
2377         while (l_opts[i].name) {
2378                 ostr[c++] = l_opts[i].val;
2379                 if (l_opts[i].has_arg == required_argument)
2380                         ostr[c++] = ':';
2381                 else if (l_opts[i].has_arg == optional_argument) {
2382                         ostr[c++] = ':';
2383                         ostr[c++] = ':';
2384                 }
2385                 i++;
2386         }
2387         ostr[c] = '\0';
2388 }
2389
2390 static int client_flag_set(char c)
2391 {
2392         int i;
2393
2394         i = 0;
2395         while (l_opts[i].name) {
2396                 int val = l_opts[i].val;
2397
2398                 if (c == (val & 0xff))
2399                         return (val & FIO_CLIENT_FLAG);
2400
2401                 i++;
2402         }
2403
2404         return 0;
2405 }
2406
2407 static void parse_cmd_client(void *client, char *opt)
2408 {
2409         fio_client_add_cmd_option(client, opt);
2410 }
2411
2412 static void show_closest_option(const char *name)
2413 {
2414         int best_option, best_distance;
2415         int i, distance;
2416
2417         while (*name == '-')
2418                 name++;
2419
2420         best_option = -1;
2421         best_distance = INT_MAX;
2422         i = 0;
2423         while (l_opts[i].name) {
2424                 distance = string_distance(name, l_opts[i].name);
2425                 if (distance < best_distance) {
2426                         best_distance = distance;
2427                         best_option = i;
2428                 }
2429                 i++;
2430         }
2431
2432         if (best_option != -1 && string_distance_ok(name, best_distance))
2433                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2434 }
2435
2436 static int parse_output_format(const char *optarg)
2437 {
2438         char *p, *orig, *opt;
2439         int ret = 0;
2440
2441         p = orig = strdup(optarg);
2442
2443         output_format = 0;
2444
2445         while ((opt = strsep(&p, ",")) != NULL) {
2446                 if (!strcmp(opt, "minimal") ||
2447                     !strcmp(opt, "terse") ||
2448                     !strcmp(opt, "csv"))
2449                         output_format |= FIO_OUTPUT_TERSE;
2450                 else if (!strcmp(opt, "json"))
2451                         output_format |= FIO_OUTPUT_JSON;
2452                 else if (!strcmp(opt, "json+"))
2453                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2454                 else if (!strcmp(opt, "normal"))
2455                         output_format |= FIO_OUTPUT_NORMAL;
2456                 else {
2457                         log_err("fio: invalid output format %s\n", opt);
2458                         ret = 1;
2459                         break;
2460                 }
2461         }
2462
2463         free(orig);
2464         return ret;
2465 }
2466
2467 int parse_cmd_line(int argc, char *argv[], int client_type)
2468 {
2469         struct thread_data *td = NULL;
2470         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2471         char *ostr = cmd_optstr;
2472         char *pid_file = NULL;
2473         void *cur_client = NULL;
2474         int backend = 0;
2475
2476         /*
2477          * Reset optind handling, since we may call this multiple times
2478          * for the backend.
2479          */
2480         optind = 1;
2481
2482         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2483                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2484                         parse_cmd_client(cur_client, argv[optind - 1]);
2485                         c &= ~FIO_CLIENT_FLAG;
2486                 }
2487
2488                 switch (c) {
2489                 case 'a':
2490                         smalloc_pool_size = atoi(optarg);
2491                         smalloc_pool_size <<= 10;
2492                         sinit();
2493                         break;
2494                 case 'l':
2495                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2496                         do_exit++;
2497                         exit_val = 1;
2498                         break;
2499                 case 'b':
2500                         write_bw_log = 1;
2501                         break;
2502                 case 'o': {
2503                         FILE *tmp;
2504
2505                         if (f_out && f_out != stdout)
2506                                 fclose(f_out);
2507
2508                         tmp = fopen(optarg, "w+");
2509                         if (!tmp) {
2510                                 log_err("fio: output file open error: %s\n", strerror(errno));
2511                                 exit_val = 1;
2512                                 do_exit++;
2513                                 break;
2514                         }
2515                         f_err = f_out = tmp;
2516                         break;
2517                         }
2518                 case 'm':
2519                         output_format = FIO_OUTPUT_TERSE;
2520                         break;
2521                 case 'F':
2522                         if (parse_output_format(optarg)) {
2523                                 log_err("fio: failed parsing output-format\n");
2524                                 exit_val = 1;
2525                                 do_exit++;
2526                                 break;
2527                         }
2528                         break;
2529                 case 'f':
2530                         output_format |= FIO_OUTPUT_TERSE;
2531                         break;
2532                 case 'h':
2533                         did_arg = true;
2534                         if (!cur_client) {
2535                                 usage(argv[0]);
2536                                 do_exit++;
2537                         }
2538                         break;
2539                 case 'c':
2540                         did_arg = true;
2541                         if (!cur_client) {
2542                                 fio_show_option_help(optarg);
2543                                 do_exit++;
2544                         }
2545                         break;
2546                 case 'i':
2547                         did_arg = true;
2548                         if (!cur_client) {
2549                                 fio_show_ioengine_help(optarg);
2550                                 do_exit++;
2551                         }
2552                         break;
2553                 case 's':
2554                         did_arg = true;
2555                         dump_cmdline = 1;
2556                         break;
2557                 case 'r':
2558                         read_only = 1;
2559                         break;
2560                 case 'v':
2561                         did_arg = true;
2562                         if (!cur_client) {
2563                                 log_info("%s\n", fio_version_string);
2564                                 do_exit++;
2565                         }
2566                         break;
2567                 case 'V':
2568                         terse_version = atoi(optarg);
2569                         if (!(terse_version >= 2 && terse_version <= 5)) {
2570                                 log_err("fio: bad terse version format\n");
2571                                 exit_val = 1;
2572                                 do_exit++;
2573                         }
2574                         break;
2575                 case 'e':
2576                         if (!strcmp("always", optarg))
2577                                 eta_print = FIO_ETA_ALWAYS;
2578                         else if (!strcmp("never", optarg))
2579                                 eta_print = FIO_ETA_NEVER;
2580                         break;
2581                 case 'E': {
2582                         long long t = 0;
2583
2584                         if (check_str_time(optarg, &t, 1)) {
2585                                 log_err("fio: failed parsing eta time %s\n", optarg);
2586                                 exit_val = 1;
2587                                 do_exit++;
2588                                 break;
2589                         }
2590                         eta_new_line = t / 1000;
2591                         if (!eta_new_line) {
2592                                 log_err("fio: eta new line time too short\n");
2593                                 exit_val = 1;
2594                                 do_exit++;
2595                         }
2596                         break;
2597                         }
2598                 case 'O': {
2599                         long long t = 0;
2600
2601                         if (check_str_time(optarg, &t, 1)) {
2602                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2603                                 exit_val = 1;
2604                                 do_exit++;
2605                                 break;
2606                         }
2607                         eta_interval_msec = t / 1000;
2608                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2609                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2610                                 exit_val = 1;
2611                                 do_exit++;
2612                         }
2613                         break;
2614                         }
2615                 case 'd':
2616                         if (set_debug(optarg))
2617                                 do_exit++;
2618                         break;
2619                 case 'P':
2620                         did_arg = true;
2621                         parse_only = 1;
2622                         break;
2623                 case 'x': {
2624                         size_t new_size;
2625
2626                         if (!strcmp(optarg, "global")) {
2627                                 log_err("fio: can't use global as only "
2628                                         "section\n");
2629                                 do_exit++;
2630                                 exit_val = 1;
2631                                 break;
2632                         }
2633                         new_size = (nr_job_sections + 1) * sizeof(char *);
2634                         job_sections = realloc(job_sections, new_size);
2635                         job_sections[nr_job_sections] = strdup(optarg);
2636                         nr_job_sections++;
2637                         break;
2638                         }
2639 #ifdef CONFIG_ZLIB
2640                 case 'X':
2641                         exit_val = iolog_file_inflate(optarg);
2642                         did_arg = true;
2643                         do_exit++;
2644                         break;
2645 #endif
2646                 case 'p':
2647                         did_arg = true;
2648                         if (exec_profile)
2649                                 free(exec_profile);
2650                         exec_profile = strdup(optarg);
2651                         break;
2652                 case FIO_GETOPT_JOB: {
2653                         const char *opt = l_opts[lidx].name;
2654                         char *val = optarg;
2655
2656                         if (!strncmp(opt, "name", 4) && td) {
2657                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2658                                 if (ret)
2659                                         goto out_free;
2660                                 td = NULL;
2661                                 did_arg = true;
2662                         }
2663                         if (!td) {
2664                                 int is_section = !strncmp(opt, "name", 4);
2665                                 int global = 0;
2666
2667                                 if (!is_section || !strncmp(val, "global", 6))
2668                                         global = 1;
2669
2670                                 if (is_section && skip_this_section(val))
2671                                         continue;
2672
2673                                 td = get_new_job(global, &def_thread, true, NULL);
2674                                 if (!td || ioengine_load(td)) {
2675                                         if (td) {
2676                                                 put_job(td);
2677                                                 td = NULL;
2678                                         }
2679                                         do_exit++;
2680                                         exit_val = 1;
2681                                         break;
2682                                 }
2683                                 fio_options_set_ioengine_opts(l_opts, td);
2684                         }
2685
2686                         if ((!val || !strlen(val)) &&
2687                             l_opts[lidx].has_arg == required_argument) {
2688                                 log_err("fio: option %s requires an argument\n", opt);
2689                                 ret = 1;
2690                         } else
2691                                 ret = fio_cmd_option_parse(td, opt, val);
2692
2693                         if (ret) {
2694                                 if (td) {
2695                                         put_job(td);
2696                                         td = NULL;
2697                                 }
2698                                 do_exit++;
2699                                 exit_val = 1;
2700                         }
2701
2702                         if (!ret && !strcmp(opt, "ioengine")) {
2703                                 if (ioengine_load(td)) {
2704                                         put_job(td);
2705                                         td = NULL;
2706                                         do_exit++;
2707                                         exit_val = 1;
2708                                         break;
2709                                 }
2710                                 fio_options_set_ioengine_opts(l_opts, td);
2711                         }
2712                         break;
2713                 }
2714                 case FIO_GETOPT_IOENGINE: {
2715                         const char *opt = l_opts[lidx].name;
2716                         char *val = optarg;
2717
2718                         if (!td)
2719                                 break;
2720
2721                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2722                         break;
2723                 }
2724                 case 'w':
2725                         warnings_fatal = 1;
2726                         break;
2727                 case 'j':
2728                         max_jobs = atoi(optarg);
2729                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2730                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2731                                 do_exit++;
2732                                 exit_val = 1;
2733                         }
2734                         break;
2735                 case 'S':
2736                         did_arg = true;
2737 #ifndef CONFIG_NO_SHM
2738                         if (nr_clients) {
2739                                 log_err("fio: can't be both client and server\n");
2740                                 do_exit++;
2741                                 exit_val = 1;
2742                                 break;
2743                         }
2744                         if (optarg)
2745                                 fio_server_set_arg(optarg);
2746                         is_backend = 1;
2747                         backend = 1;
2748 #else
2749                         log_err("fio: client/server requires SHM support\n");
2750                         do_exit++;
2751                         exit_val = 1;
2752 #endif
2753                         break;
2754                 case 'D':
2755                         if (pid_file)
2756                                 free(pid_file);
2757                         pid_file = strdup(optarg);
2758                         break;
2759                 case 'I':
2760                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2761                                 /* exit on error and calibration only */
2762                                 did_arg = true;
2763                                 do_exit++;
2764                                 if (ret == -1)
2765                                         exit_val = 1;
2766                         }
2767                         break;
2768                 case 'C':
2769                         did_arg = true;
2770                         if (is_backend) {
2771                                 log_err("fio: can't be both client and server\n");
2772                                 do_exit++;
2773                                 exit_val = 1;
2774                                 break;
2775                         }
2776                         /* if --client parameter contains a pathname */
2777                         if (0 == access(optarg, R_OK)) {
2778                                 /* file contains a list of host addrs or names */
2779                                 char hostaddr[PATH_MAX] = {0};
2780                                 char formatstr[8];
2781                                 FILE * hostf = fopen(optarg, "r");
2782                                 if (!hostf) {
2783                                         log_err("fio: could not open client list file %s for read\n", optarg);
2784                                         do_exit++;
2785                                         exit_val = 1;
2786                                         break;
2787                                 }
2788                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2789                                 /*
2790                                  * read at most PATH_MAX-1 chars from each
2791                                  * record in this file
2792                                  */
2793                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2794                                         /* expect EVERY host in file to be valid */
2795                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2796                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2797                                                 do_exit++;
2798                                                 exit_val = 1;
2799                                                 break;
2800                                         }
2801                                 }
2802                                 fclose(hostf);
2803                                 break; /* no possibility of job file for "this client only" */
2804                         }
2805                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2806                                 log_err("fio: failed adding client %s\n", optarg);
2807                                 do_exit++;
2808                                 exit_val = 1;
2809                                 break;
2810                         }
2811                         /*
2812                          * If the next argument exists and isn't an option,
2813                          * assume it's a job file for this client only.
2814                          */
2815                         while (optind < argc) {
2816                                 if (!strncmp(argv[optind], "--", 2) ||
2817                                     !strncmp(argv[optind], "-", 1))
2818                                         break;
2819
2820                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2821                                         break;
2822                                 optind++;
2823                         }
2824                         break;
2825                 case 'R':
2826                         did_arg = true;
2827                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2828                                 do_exit++;
2829                                 exit_val = 1;
2830                         }
2831                         break;
2832                 case 'T':
2833                         did_arg = true;
2834                         do_exit++;
2835                         exit_val = fio_monotonic_clocktest(1);
2836                         break;
2837                 case 'G':
2838                         did_arg = true;
2839                         do_exit++;
2840                         exit_val = fio_crctest(optarg);
2841                         break;
2842                 case 'M':
2843                         did_arg = true;
2844                         do_exit++;
2845                         exit_val = fio_memcpy_test(optarg);
2846                         break;
2847                 case 'L': {
2848                         long long val;
2849
2850                         if (check_str_time(optarg, &val, 1)) {
2851                                 log_err("fio: failed parsing time %s\n", optarg);
2852                                 do_exit++;
2853                                 exit_val = 1;
2854                                 break;
2855                         }
2856                         if (val < 1000) {
2857                                 log_err("fio: status interval too small\n");
2858                                 do_exit++;
2859                                 exit_val = 1;
2860                         }
2861                         status_interval = val / 1000;
2862                         break;
2863                         }
2864                 case 'W':
2865                         if (trigger_file)
2866                                 free(trigger_file);
2867                         trigger_file = strdup(optarg);
2868                         break;
2869                 case 'H':
2870                         if (trigger_cmd)
2871                                 free(trigger_cmd);
2872                         trigger_cmd = strdup(optarg);
2873                         break;
2874                 case 'J':
2875                         if (trigger_remote_cmd)
2876                                 free(trigger_remote_cmd);
2877                         trigger_remote_cmd = strdup(optarg);
2878                         break;
2879                 case 'K':
2880                         if (aux_path)
2881                                 free(aux_path);
2882                         aux_path = strdup(optarg);
2883                         break;
2884                 case 'B':
2885                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2886                                 log_err("fio: failed parsing time %s\n", optarg);
2887                                 do_exit++;
2888                                 exit_val = 1;
2889                         }
2890                         trigger_timeout /= 1000000;
2891                         break;
2892                 case '?':
2893                         log_err("%s: unrecognized option '%s'\n", argv[0],
2894                                                         argv[optind - 1]);
2895                         show_closest_option(argv[optind - 1]);
2896                 default:
2897                         do_exit++;
2898                         exit_val = 1;
2899                         break;
2900                 }
2901                 if (do_exit)
2902                         break;
2903         }
2904
2905         if (do_exit && !(is_backend || nr_clients))
2906                 exit(exit_val);
2907
2908         if (nr_clients && fio_clients_connect())
2909                 exit(1);
2910
2911         if (is_backend && backend)
2912                 return fio_start_server(pid_file);
2913         else if (pid_file)
2914                 free(pid_file);
2915
2916         if (td) {
2917                 if (!ret) {
2918                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2919                         if (ret)
2920                                 exit(1);
2921                 }
2922         }
2923
2924         while (!ret && optind < argc) {
2925                 ini_idx++;
2926                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2927                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2928                 optind++;
2929         }
2930
2931 out_free:
2932         return ini_idx;
2933 }
2934
2935 int fio_init_options(void)
2936 {
2937         f_out = stdout;
2938         f_err = stderr;
2939
2940         fio_options_fill_optstring();
2941         fio_options_dup_and_init(l_opts);
2942
2943         atexit(free_shm);
2944
2945         if (fill_def_thread())
2946                 return 1;
2947
2948         return 0;
2949 }
2950
2951 extern int fio_check_options(struct thread_options *);
2952
2953 int parse_options(int argc, char *argv[])
2954 {
2955         const int type = FIO_CLIENT_TYPE_CLI;
2956         int job_files, i;
2957
2958         if (fio_init_options())
2959                 return 1;
2960         if (fio_test_cconv(&def_thread.o))
2961                 log_err("fio: failed internal cconv test\n");
2962
2963         job_files = parse_cmd_line(argc, argv, type);
2964
2965         if (job_files > 0) {
2966                 for (i = 0; i < job_files; i++) {
2967                         if (i && fill_def_thread())
2968                                 return 1;
2969                         if (nr_clients) {
2970                                 if (fio_clients_send_ini(ini_file[i]))
2971                                         return 1;
2972                                 free(ini_file[i]);
2973                         } else if (!is_backend) {
2974                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2975                                         return 1;
2976                                 free(ini_file[i]);
2977                         }
2978                 }
2979         } else if (nr_clients) {
2980                 if (fill_def_thread())
2981                         return 1;
2982                 if (fio_clients_send_ini(NULL))
2983                         return 1;
2984         }
2985
2986         free(ini_file);
2987         fio_options_free(&def_thread);
2988         filesetup_mem_free();
2989
2990         if (!thread_number) {
2991                 if (parse_dryrun())
2992                         return 0;
2993                 if (exec_profile)
2994                         return 0;
2995                 if (is_backend || nr_clients)
2996                         return 0;
2997                 if (did_arg)
2998                         return 0;
2999
3000                 log_err("No job(s) defined\n\n");
3001                 usage(argv[0]);
3002                 return 1;
3003         }
3004
3005         if (output_format & FIO_OUTPUT_NORMAL)
3006                 log_info("%s\n", fio_version_string);
3007
3008         return 0;
3009 }
3010
3011 void options_default_fill(struct thread_options *o)
3012 {
3013         memcpy(o, &def_thread.o, sizeof(*o));
3014 }
3015
3016 struct thread_data *get_global_options(void)
3017 {
3018         return &def_thread;
3019 }