options: allow offset_increment to understand percentages
[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 #include "blktrace.h"
34
35 #include "oslib/getopt.h"
36 #include "oslib/strcasestr.h"
37
38 #include "crc/test.h"
39 #include "lib/pow2.h"
40 #include "lib/memcpy.h"
41
42 const char fio_version_string[] = FIO_VERSION;
43
44 #define FIO_RANDSEED            (0xb1899bedUL)
45
46 static char **ini_file;
47 static int max_jobs = FIO_MAX_JOBS;
48 static bool dump_cmdline;
49 static bool parse_only;
50 static bool merge_blktrace_only;
51
52 static struct thread_data def_thread;
53 struct thread_data *threads = NULL;
54 static char **job_sections;
55 static int nr_job_sections;
56
57 bool exitall_on_terminate = false;
58 int output_format = FIO_OUTPUT_NORMAL;
59 int eta_print = FIO_ETA_AUTO;
60 unsigned int eta_interval_msec = 1000;
61 int eta_new_line = 0;
62 FILE *f_out = NULL;
63 FILE *f_err = NULL;
64 char *exec_profile = NULL;
65 int warnings_fatal = 0;
66 int terse_version = 3;
67 bool is_backend = false;
68 bool is_local_backend = false;
69 int nr_clients = 0;
70 bool log_syslog = false;
71
72 bool write_bw_log = false;
73 bool read_only = false;
74 int status_interval = 0;
75
76 char *trigger_file = NULL;
77 long long trigger_timeout = 0;
78 char *trigger_cmd = NULL;
79 char *trigger_remote_cmd = NULL;
80
81 char *aux_path = NULL;
82
83 static int prev_group_jobs;
84
85 unsigned long fio_debug = 0;
86 unsigned int fio_debug_jobno = -1;
87 unsigned int *fio_debug_jobp = NULL;
88 unsigned int *fio_warned = NULL;
89
90 static char cmd_optstr[256];
91 static bool did_arg;
92
93 #define FIO_CLIENT_FLAG         (1 << 16)
94
95 /*
96  * Command line options. These will contain the above, plus a few
97  * extra that only pertain to fio itself and not jobs.
98  */
99 static struct option l_opts[FIO_NR_OPTIONS] = {
100         {
101                 .name           = (char *) "output",
102                 .has_arg        = required_argument,
103                 .val            = 'o' | FIO_CLIENT_FLAG,
104         },
105         {
106                 .name           = (char *) "latency-log",
107                 .has_arg        = required_argument,
108                 .val            = 'l' | FIO_CLIENT_FLAG,
109         },
110         {
111                 .name           = (char *) "bandwidth-log",
112                 .has_arg        = no_argument,
113                 .val            = 'b' | FIO_CLIENT_FLAG,
114         },
115         {
116                 .name           = (char *) "minimal",
117                 .has_arg        = no_argument,
118                 .val            = 'm' | FIO_CLIENT_FLAG,
119         },
120         {
121                 .name           = (char *) "output-format",
122                 .has_arg        = required_argument,
123                 .val            = 'F' | FIO_CLIENT_FLAG,
124         },
125         {
126                 .name           = (char *) "append-terse",
127                 .has_arg        = optional_argument,
128                 .val            = 'f',
129         },
130         {
131                 .name           = (char *) "version",
132                 .has_arg        = no_argument,
133                 .val            = 'v' | FIO_CLIENT_FLAG,
134         },
135         {
136                 .name           = (char *) "help",
137                 .has_arg        = no_argument,
138                 .val            = 'h' | FIO_CLIENT_FLAG,
139         },
140         {
141                 .name           = (char *) "cmdhelp",
142                 .has_arg        = optional_argument,
143                 .val            = 'c' | FIO_CLIENT_FLAG,
144         },
145         {
146                 .name           = (char *) "enghelp",
147                 .has_arg        = optional_argument,
148                 .val            = 'i' | FIO_CLIENT_FLAG,
149         },
150         {
151                 .name           = (char *) "showcmd",
152                 .has_arg        = no_argument,
153                 .val            = 's' | FIO_CLIENT_FLAG,
154         },
155         {
156                 .name           = (char *) "readonly",
157                 .has_arg        = no_argument,
158                 .val            = 'r' | FIO_CLIENT_FLAG,
159         },
160         {
161                 .name           = (char *) "eta",
162                 .has_arg        = required_argument,
163                 .val            = 'e' | FIO_CLIENT_FLAG,
164         },
165         {
166                 .name           = (char *) "eta-interval",
167                 .has_arg        = required_argument,
168                 .val            = 'O' | FIO_CLIENT_FLAG,
169         },
170         {
171                 .name           = (char *) "eta-newline",
172                 .has_arg        = required_argument,
173                 .val            = 'E' | FIO_CLIENT_FLAG,
174         },
175         {
176                 .name           = (char *) "debug",
177                 .has_arg        = required_argument,
178                 .val            = 'd' | FIO_CLIENT_FLAG,
179         },
180         {
181                 .name           = (char *) "parse-only",
182                 .has_arg        = no_argument,
183                 .val            = 'P' | FIO_CLIENT_FLAG,
184         },
185         {
186                 .name           = (char *) "section",
187                 .has_arg        = required_argument,
188                 .val            = 'x' | FIO_CLIENT_FLAG,
189         },
190 #ifdef CONFIG_ZLIB
191         {
192                 .name           = (char *) "inflate-log",
193                 .has_arg        = required_argument,
194                 .val            = 'X' | FIO_CLIENT_FLAG,
195         },
196 #endif
197         {
198                 .name           = (char *) "alloc-size",
199                 .has_arg        = required_argument,
200                 .val            = 'a' | FIO_CLIENT_FLAG,
201         },
202         {
203                 .name           = (char *) "profile",
204                 .has_arg        = required_argument,
205                 .val            = 'p' | FIO_CLIENT_FLAG,
206         },
207         {
208                 .name           = (char *) "warnings-fatal",
209                 .has_arg        = no_argument,
210                 .val            = 'w' | FIO_CLIENT_FLAG,
211         },
212         {
213                 .name           = (char *) "max-jobs",
214                 .has_arg        = required_argument,
215                 .val            = 'j' | FIO_CLIENT_FLAG,
216         },
217         {
218                 .name           = (char *) "terse-version",
219                 .has_arg        = required_argument,
220                 .val            = 'V' | FIO_CLIENT_FLAG,
221         },
222         {
223                 .name           = (char *) "server",
224                 .has_arg        = optional_argument,
225                 .val            = 'S',
226         },
227         {       .name           = (char *) "daemonize",
228                 .has_arg        = required_argument,
229                 .val            = 'D',
230         },
231         {
232                 .name           = (char *) "client",
233                 .has_arg        = required_argument,
234                 .val            = 'C',
235         },
236         {
237                 .name           = (char *) "remote-config",
238                 .has_arg        = required_argument,
239                 .val            = 'R',
240         },
241         {
242                 .name           = (char *) "cpuclock-test",
243                 .has_arg        = no_argument,
244                 .val            = 'T',
245         },
246         {
247                 .name           = (char *) "crctest",
248                 .has_arg        = optional_argument,
249                 .val            = 'G',
250         },
251         {
252                 .name           = (char *) "memcpytest",
253                 .has_arg        = optional_argument,
254                 .val            = 'M',
255         },
256         {
257                 .name           = (char *) "idle-prof",
258                 .has_arg        = required_argument,
259                 .val            = 'I',
260         },
261         {
262                 .name           = (char *) "status-interval",
263                 .has_arg        = required_argument,
264                 .val            = 'L' | FIO_CLIENT_FLAG,
265         },
266         {
267                 .name           = (char *) "trigger-file",
268                 .has_arg        = required_argument,
269                 .val            = 'W',
270         },
271         {
272                 .name           = (char *) "trigger-timeout",
273                 .has_arg        = required_argument,
274                 .val            = 'B',
275         },
276         {
277                 .name           = (char *) "trigger",
278                 .has_arg        = required_argument,
279                 .val            = 'H',
280         },
281         {
282                 .name           = (char *) "trigger-remote",
283                 .has_arg        = required_argument,
284                 .val            = 'J',
285         },
286         {
287                 .name           = (char *) "aux-path",
288                 .has_arg        = required_argument,
289                 .val            = 'K',
290         },
291         {
292                 .name           = (char *) "merge-blktrace-only",
293                 .has_arg        = no_argument,
294                 .val            = 'A' | FIO_CLIENT_FLAG,
295         },
296         {
297                 .name           = NULL,
298         },
299 };
300
301 void free_threads_shm(void)
302 {
303         if (threads) {
304                 void *tp = threads;
305 #ifndef CONFIG_NO_SHM
306                 struct shmid_ds sbuf;
307
308                 threads = NULL;
309                 shmdt(tp);
310                 shmctl(shm_id, IPC_RMID, &sbuf);
311                 shm_id = -1;
312 #else
313                 threads = NULL;
314                 free(tp);
315 #endif
316         }
317 }
318
319 static void free_shm(void)
320 {
321         if (threads) {
322                 flow_exit();
323                 fio_debug_jobp = NULL;
324                 fio_warned = NULL;
325                 free_threads_shm();
326         }
327
328         free(trigger_file);
329         free(trigger_cmd);
330         free(trigger_remote_cmd);
331         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
332
333         options_free(fio_options, &def_thread.o);
334         fio_filelock_exit();
335         file_hash_exit();
336         scleanup();
337 }
338
339 /*
340  * The thread area is shared between the main process and the job
341  * threads/processes. So setup a shared memory segment that will hold
342  * all the job info. We use the end of the region for keeping track of
343  * open files across jobs, for file sharing.
344  */
345 static int setup_thread_area(void)
346 {
347         int i;
348
349         if (threads)
350                 return 0;
351
352         /*
353          * 1024 is too much on some machines, scale max_jobs if
354          * we get a failure that looks like too large a shm segment
355          */
356         do {
357                 size_t size = max_jobs * sizeof(struct thread_data);
358
359                 size += 2 * sizeof(unsigned int);
360
361 #ifndef CONFIG_NO_SHM
362                 shm_id = shmget(0, size, IPC_CREAT | 0600);
363                 if (shm_id != -1)
364                         break;
365                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
366                         perror("shmget");
367                         break;
368                 }
369 #else
370                 threads = malloc(size);
371                 if (threads)
372                         break;
373 #endif
374
375                 max_jobs >>= 1;
376         } while (max_jobs);
377
378 #ifndef CONFIG_NO_SHM
379         if (shm_id == -1)
380                 return 1;
381
382         threads = shmat(shm_id, NULL, 0);
383         if (threads == (void *) -1) {
384                 perror("shmat");
385                 return 1;
386         }
387         if (shm_attach_to_open_removed())
388                 shmctl(shm_id, IPC_RMID, NULL);
389 #endif
390
391         memset(threads, 0, max_jobs * sizeof(struct thread_data));
392         for (i = 0; i < max_jobs; i++)
393                 DRD_IGNORE_VAR(threads[i]);
394         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
395         *fio_debug_jobp = -1;
396         fio_warned = fio_debug_jobp + 1;
397         *fio_warned = 0;
398
399         flow_init();
400
401         return 0;
402 }
403
404 static void dump_print_option(struct print_option *p)
405 {
406         const char *delim;
407
408         if (!strcmp("description", p->name))
409                 delim = "\"";
410         else
411                 delim = "";
412
413         log_info("--%s%s", p->name, p->value ? "" : " ");
414         if (p->value)
415                 log_info("=%s%s%s ", delim, p->value, delim);
416 }
417
418 static void dump_opt_list(struct thread_data *td)
419 {
420         struct flist_head *entry;
421         struct print_option *p;
422
423         if (flist_empty(&td->opt_list))
424                 return;
425
426         flist_for_each(entry, &td->opt_list) {
427                 p = flist_entry(entry, struct print_option, list);
428                 dump_print_option(p);
429         }
430 }
431
432 static void fio_dump_options_free(struct thread_data *td)
433 {
434         while (!flist_empty(&td->opt_list)) {
435                 struct print_option *p;
436
437                 p = flist_first_entry(&td->opt_list, struct print_option, list);
438                 flist_del_init(&p->list);
439                 free(p->name);
440                 free(p->value);
441                 free(p);
442         }
443 }
444
445 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
446 {
447         struct flist_head *entry;
448
449         if (flist_empty(&src->opt_list))
450                 return;
451
452         flist_for_each(entry, &src->opt_list) {
453                 struct print_option *srcp, *dstp;
454
455                 srcp = flist_entry(entry, struct print_option, list);
456                 dstp = malloc(sizeof(*dstp));
457                 dstp->name = strdup(srcp->name);
458                 if (srcp->value)
459                         dstp->value = strdup(srcp->value);
460                 else
461                         dstp->value = NULL;
462                 flist_add_tail(&dstp->list, &dst->opt_list);
463         }
464 }
465
466 /*
467  * Return a free job structure.
468  */
469 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
470                                        bool preserve_eo, const char *jobname)
471 {
472         struct thread_data *td;
473
474         if (global)
475                 return &def_thread;
476         if (setup_thread_area()) {
477                 log_err("error: failed to setup shm segment\n");
478                 return NULL;
479         }
480         if (thread_number >= max_jobs) {
481                 log_err("error: maximum number of jobs (%d) reached.\n",
482                                 max_jobs);
483                 return NULL;
484         }
485
486         td = &threads[thread_number++];
487         *td = *parent;
488
489         INIT_FLIST_HEAD(&td->opt_list);
490         if (parent != &def_thread)
491                 copy_opt_list(td, parent);
492
493         td->io_ops = NULL;
494         td->io_ops_init = 0;
495         if (!preserve_eo)
496                 td->eo = NULL;
497
498         td->o.uid = td->o.gid = -1U;
499
500         dup_files(td, parent);
501         fio_options_mem_dupe(td);
502
503         profile_add_hooks(td);
504
505         td->thread_number = thread_number;
506         td->subjob_number = 0;
507
508         if (jobname)
509                 td->o.name = strdup(jobname);
510
511         if (!parent->o.group_reporting || parent == &def_thread)
512                 stat_number++;
513
514         return td;
515 }
516
517 static void put_job(struct thread_data *td)
518 {
519         if (td == &def_thread)
520                 return;
521
522         profile_td_exit(td);
523         flow_exit_job(td);
524
525         if (td->error)
526                 log_info("fio: %s\n", td->verror);
527
528         fio_options_free(td);
529         fio_dump_options_free(td);
530         if (td->io_ops)
531                 free_ioengine(td);
532
533         if (td->o.name)
534                 free(td->o.name);
535
536         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
537         thread_number--;
538 }
539
540 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
541 {
542         unsigned long long bs = td->o.min_bs[ddir];
543
544         assert(ddir_rw(ddir));
545
546         if (td->o.rate[ddir])
547                 td->rate_bps[ddir] = td->o.rate[ddir];
548         else
549                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
550
551         if (!td->rate_bps[ddir]) {
552                 log_err("rate lower than supported\n");
553                 return -1;
554         }
555
556         td->rate_next_io_time[ddir] = 0;
557         td->rate_io_issue_bytes[ddir] = 0;
558         td->last_usec[ddir] = 0;
559         return 0;
560 }
561
562 static int setup_rate(struct thread_data *td)
563 {
564         int ret = 0;
565
566         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
567                 ret = __setup_rate(td, DDIR_READ);
568         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
569                 ret |= __setup_rate(td, DDIR_WRITE);
570         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
571                 ret |= __setup_rate(td, DDIR_TRIM);
572
573         return ret;
574 }
575
576 static int fixed_block_size(struct thread_options *o)
577 {
578         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
579                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
580                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
581                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
582                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
583 }
584
585 /*
586  * <3 Johannes
587  */
588 static unsigned int gcd(unsigned int m, unsigned int n)
589 {
590         if (!n)
591                 return m;
592
593         return gcd(n, m % n);
594 }
595
596 /*
597  * Lazy way of fixing up options that depend on each other. We could also
598  * define option callback handlers, but this is easier.
599  */
600 static int fixup_options(struct thread_data *td)
601 {
602         struct thread_options *o = &td->o;
603         int ret = 0;
604
605         if (read_only && (td_write(td) || td_trim(td))) {
606                 log_err("fio: trim and write operations are not allowed"
607                          " with the --readonly parameter.\n");
608                 ret |= 1;
609         }
610
611 #ifndef CONFIG_PSHARED
612         if (!o->use_thread) {
613                 log_info("fio: this platform does not support process shared"
614                          " mutexes, forcing use of threads. Use the 'thread'"
615                          " option to get rid of this warning.\n");
616                 o->use_thread = 1;
617                 ret |= warnings_fatal;
618         }
619 #endif
620
621         if (o->write_iolog_file && o->read_iolog_file) {
622                 log_err("fio: read iolog overrides write_iolog\n");
623                 free(o->write_iolog_file);
624                 o->write_iolog_file = NULL;
625                 ret |= warnings_fatal;
626         }
627
628         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
629                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
630                 ret |= 1;
631         }
632
633         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
634                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
635                 ret |= 1;
636         }
637
638         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
639                 if (o->zone_size)
640                         o->zone_mode = ZONE_MODE_STRIDED;
641                 else
642                         o->zone_mode = ZONE_MODE_NONE;
643         }
644
645         /*
646          * Strided zone mode only really works with 1 file.
647          */
648         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
649                 o->zone_mode = ZONE_MODE_NONE;
650
651         /*
652          * If zone_range isn't specified, backward compatibility dictates it
653          * should be made equal to zone_size.
654          */
655         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
656                 o->zone_range = o->zone_size;
657
658         /*
659          * Reads can do overwrites, we always need to pre-create the file
660          */
661         if (td_read(td))
662                 o->overwrite = 1;
663
664         if (!o->min_bs[DDIR_READ])
665                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
666         if (!o->max_bs[DDIR_READ])
667                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
668         if (!o->min_bs[DDIR_WRITE])
669                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
670         if (!o->max_bs[DDIR_WRITE])
671                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
672         if (!o->min_bs[DDIR_TRIM])
673                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
674         if (!o->max_bs[DDIR_TRIM])
675                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
676
677         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
678         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
679
680         /*
681          * For random IO, allow blockalign offset other than min_bs.
682          */
683         if (!o->ba[DDIR_READ] || !td_random(td))
684                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
685         if (!o->ba[DDIR_WRITE] || !td_random(td))
686                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
687         if (!o->ba[DDIR_TRIM] || !td_random(td))
688                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
689
690         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
691             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
692             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
693             !o->norandommap) {
694                 log_err("fio: Any use of blockalign= turns off randommap\n");
695                 o->norandommap = 1;
696                 ret |= warnings_fatal;
697         }
698
699         if (!o->file_size_high)
700                 o->file_size_high = o->file_size_low;
701
702         if (o->start_delay_high) {
703                 if (!o->start_delay_orig)
704                         o->start_delay_orig = o->start_delay;
705                 o->start_delay = rand_between(&td->delay_state,
706                                                 o->start_delay_orig,
707                                                 o->start_delay_high);
708         }
709
710         if (o->norandommap && o->verify != VERIFY_NONE
711             && !fixed_block_size(o))  {
712                 log_err("fio: norandommap given for variable block sizes, "
713                         "verify limited\n");
714                 ret |= warnings_fatal;
715         }
716         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
717                 log_err("fio: bs_unaligned may not work with raw io\n");
718
719         /*
720          * thinktime_spin must be less than thinktime
721          */
722         if (o->thinktime_spin > o->thinktime)
723                 o->thinktime_spin = o->thinktime;
724
725         /*
726          * The low water mark cannot be bigger than the iodepth
727          */
728         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
729                 o->iodepth_low = o->iodepth;
730
731         /*
732          * If batch number isn't set, default to the same as iodepth
733          */
734         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
735                 o->iodepth_batch = o->iodepth;
736
737         /*
738          * If max batch complete number isn't set or set incorrectly,
739          * default to the same as iodepth_batch_complete_min
740          */
741         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
742                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
743
744         /*
745          * There's no need to check for in-flight overlapping IOs if the job
746          * isn't changing data or the maximum iodepth is guaranteed to be 1
747          * when we are not in offload mode
748          */
749         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
750             (!(td_write(td) || td_trim(td)) || o->iodepth == 1) &&
751             o->io_submit_mode != IO_MODE_OFFLOAD)
752                 o->serialize_overlap = 0;
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         uint64_t 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         snprintf(buf, buf_size, "%s", o->filename_format);
1277
1278         memset(copy, 0, sizeof(copy));
1279         for (f = &fpre_keywords[0]; f->keyword; f++) {
1280                 do {
1281                         size_t pre_len, post_start = 0;
1282                         char *str, *dst = copy;
1283
1284                         str = strcasestr(buf, f->keyword);
1285                         if (!str)
1286                                 break;
1287
1288                         pre_len = str - buf;
1289                         if (strlen(str) != f->strlen)
1290                                 post_start = pre_len + f->strlen;
1291
1292                         if (pre_len) {
1293                                 strncpy(dst, buf, pre_len);
1294                                 dst += pre_len;
1295                                 dst_left -= pre_len;
1296                         }
1297
1298                         switch (f->key) {
1299                         case FPRE_JOBNAME: {
1300                                 int ret;
1301
1302                                 ret = snprintf(dst, dst_left, "%s", jobname);
1303                                 if (ret < 0)
1304                                         break;
1305                                 else if (ret > dst_left) {
1306                                         log_err("fio: truncated filename\n");
1307                                         dst += dst_left;
1308                                         dst_left = 0;
1309                                 } else {
1310                                         dst += ret;
1311                                         dst_left -= ret;
1312                                 }
1313                                 break;
1314                                 }
1315                         case FPRE_JOBNUM: {
1316                                 int ret;
1317
1318                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1319                                 if (ret < 0)
1320                                         break;
1321                                 else if (ret > dst_left) {
1322                                         log_err("fio: truncated filename\n");
1323                                         dst += dst_left;
1324                                         dst_left = 0;
1325                                 } else {
1326                                         dst += ret;
1327                                         dst_left -= ret;
1328                                 }
1329                                 break;
1330                                 }
1331                         case FPRE_FILENUM: {
1332                                 int ret;
1333
1334                                 ret = snprintf(dst, dst_left, "%d", filenum);
1335                                 if (ret < 0)
1336                                         break;
1337                                 else if (ret > dst_left) {
1338                                         log_err("fio: truncated filename\n");
1339                                         dst += dst_left;
1340                                         dst_left = 0;
1341                                 } else {
1342                                         dst += ret;
1343                                         dst_left -= ret;
1344                                 }
1345                                 break;
1346                                 }
1347                         default:
1348                                 assert(0);
1349                                 break;
1350                         }
1351
1352                         if (post_start)
1353                                 strncpy(dst, buf + post_start, dst_left);
1354
1355                         snprintf(buf, buf_size, "%s", copy);
1356                 } while (1);
1357         }
1358
1359         return buf;
1360 }
1361
1362 bool parse_dryrun(void)
1363 {
1364         return dump_cmdline || parse_only;
1365 }
1366
1367 static void gen_log_name(char *name, size_t size, const char *logtype,
1368                          const char *logname, unsigned int num,
1369                          const char *suf, int per_job)
1370 {
1371         if (per_job)
1372                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1373         else
1374                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1375 }
1376
1377 static int check_waitees(char *waitee)
1378 {
1379         struct thread_data *td;
1380         int i, ret = 0;
1381
1382         for_each_td(td, i) {
1383                 if (td->subjob_number)
1384                         continue;
1385
1386                 ret += !strcmp(td->o.name, waitee);
1387         }
1388
1389         return ret;
1390 }
1391
1392 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1393 {
1394         int nw;
1395
1396         if (!o->wait_for)
1397                 return true;
1398
1399         if (!strcmp(jobname, o->wait_for)) {
1400                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1401                                 jobname, o->wait_for);
1402                 return false;
1403         }
1404
1405         if (!(nw = check_waitees(o->wait_for))) {
1406                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1407                 return false;
1408         }
1409
1410         if (nw > 1) {
1411                 log_err("%s: multiple waitees %s found,\n"
1412                         "please avoid duplicates when using wait_for option.\n",
1413                                 jobname, o->wait_for);
1414                 return false;
1415         }
1416
1417         return true;
1418 }
1419
1420 /*
1421  * Treat an empty log file name the same as a one not given
1422  */
1423 static const char *make_log_name(const char *logname, const char *jobname)
1424 {
1425         if (logname && strcmp(logname, ""))
1426                 return logname;
1427
1428         return jobname;
1429 }
1430
1431 /*
1432  * Adds a job to the list of things todo. Sanitizes the various options
1433  * to make sure we don't have conflicts, and initializes various
1434  * members of td.
1435  */
1436 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1437                    int recursed, int client_type)
1438 {
1439         unsigned int i;
1440         char fname[PATH_MAX + 1];
1441         int numjobs, file_alloced;
1442         struct thread_options *o = &td->o;
1443         char logname[PATH_MAX + 32];
1444
1445         /*
1446          * the def_thread is just for options, it's not a real job
1447          */
1448         if (td == &def_thread)
1449                 return 0;
1450
1451         init_flags(td);
1452
1453         /*
1454          * if we are just dumping the output command line, don't add the job
1455          */
1456         if (parse_dryrun()) {
1457                 put_job(td);
1458                 return 0;
1459         }
1460
1461         td->client_type = client_type;
1462
1463         if (profile_td_init(td))
1464                 goto err;
1465
1466         if (ioengine_load(td))
1467                 goto err;
1468
1469         file_alloced = 0;
1470         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1471                 file_alloced = 1;
1472
1473                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1474                         add_file(td, jobname, job_add_num, 0);
1475                 else {
1476                         for (i = 0; i < o->nr_files; i++)
1477                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1478                 }
1479         }
1480
1481         if (setup_random_seeds(td)) {
1482                 td_verror(td, errno, "setup_random_seeds");
1483                 goto err;
1484         }
1485
1486         if (fixup_options(td))
1487                 goto err;
1488
1489         /*
1490          * Belongs to fixup_options, but o->name is not necessarily set as yet
1491          */
1492         if (!wait_for_ok(jobname, o))
1493                 goto err;
1494
1495         flow_init_job(td);
1496
1497         /*
1498          * IO engines only need this for option callbacks, and the address may
1499          * change in subprocesses.
1500          */
1501         if (td->eo)
1502                 *(struct thread_data **)td->eo = NULL;
1503
1504         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1505                 struct fio_file *f;
1506
1507                 for_each_file(td, f, i)
1508                         f->real_file_size = -1ULL;
1509         }
1510
1511         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1512
1513         td->ts.clat_percentiles = o->clat_percentiles;
1514         td->ts.lat_percentiles = o->lat_percentiles;
1515         td->ts.percentile_precision = o->percentile_precision;
1516         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1517         td->ts.sig_figs = o->sig_figs;
1518
1519         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1520                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1521                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1522                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1523                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1524                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1525         }
1526         td->ts.sync_stat.min_val = ULONG_MAX;
1527         td->ddir_seq_nr = o->ddir_seq_nr;
1528
1529         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1530                 prev_group_jobs = 0;
1531                 groupid++;
1532                 if (groupid == INT_MAX) {
1533                         log_err("fio: too many groups defined\n");
1534                         goto err;
1535                 }
1536         }
1537
1538         td->groupid = groupid;
1539         prev_group_jobs++;
1540
1541         if (setup_rate(td))
1542                 goto err;
1543
1544         if (o->write_lat_log) {
1545                 struct log_params p = {
1546                         .td = td,
1547                         .avg_msec = o->log_avg_msec,
1548                         .hist_msec = o->log_hist_msec,
1549                         .hist_coarseness = o->log_hist_coarseness,
1550                         .log_type = IO_LOG_TYPE_LAT,
1551                         .log_offset = o->log_offset,
1552                         .log_gz = o->log_gz,
1553                         .log_gz_store = o->log_gz_store,
1554                 };
1555                 const char *pre = make_log_name(o->lat_log_file, o->name);
1556                 const char *suf;
1557
1558                 if (p.log_gz_store)
1559                         suf = "log.fz";
1560                 else
1561                         suf = "log";
1562
1563                 gen_log_name(logname, sizeof(logname), "lat", pre,
1564                                 td->thread_number, suf, o->per_job_logs);
1565                 setup_log(&td->lat_log, &p, logname);
1566
1567                 gen_log_name(logname, sizeof(logname), "slat", pre,
1568                                 td->thread_number, suf, o->per_job_logs);
1569                 setup_log(&td->slat_log, &p, logname);
1570
1571                 gen_log_name(logname, sizeof(logname), "clat", pre,
1572                                 td->thread_number, suf, o->per_job_logs);
1573                 setup_log(&td->clat_log, &p, logname);
1574
1575         }
1576
1577         if (o->write_hist_log) {
1578                 struct log_params p = {
1579                         .td = td,
1580                         .avg_msec = o->log_avg_msec,
1581                         .hist_msec = o->log_hist_msec,
1582                         .hist_coarseness = o->log_hist_coarseness,
1583                         .log_type = IO_LOG_TYPE_HIST,
1584                         .log_offset = o->log_offset,
1585                         .log_gz = o->log_gz,
1586                         .log_gz_store = o->log_gz_store,
1587                 };
1588                 const char *pre = make_log_name(o->hist_log_file, o->name);
1589                 const char *suf;
1590
1591 #ifndef CONFIG_ZLIB
1592                 if (td->client_type) {
1593                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1594                         goto err;
1595                 }
1596 #endif
1597
1598                 if (p.log_gz_store)
1599                         suf = "log.fz";
1600                 else
1601                         suf = "log";
1602
1603                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1604                                 td->thread_number, suf, o->per_job_logs);
1605                 setup_log(&td->clat_hist_log, &p, logname);
1606         }
1607
1608         if (o->write_bw_log) {
1609                 struct log_params p = {
1610                         .td = td,
1611                         .avg_msec = o->log_avg_msec,
1612                         .hist_msec = o->log_hist_msec,
1613                         .hist_coarseness = o->log_hist_coarseness,
1614                         .log_type = IO_LOG_TYPE_BW,
1615                         .log_offset = o->log_offset,
1616                         .log_gz = o->log_gz,
1617                         .log_gz_store = o->log_gz_store,
1618                 };
1619                 const char *pre = make_log_name(o->bw_log_file, o->name);
1620                 const char *suf;
1621
1622                 if (fio_option_is_set(o, bw_avg_time))
1623                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1624                 else
1625                         o->bw_avg_time = p.avg_msec;
1626
1627                 p.hist_msec = o->log_hist_msec;
1628                 p.hist_coarseness = o->log_hist_coarseness;
1629
1630                 if (p.log_gz_store)
1631                         suf = "log.fz";
1632                 else
1633                         suf = "log";
1634
1635                 gen_log_name(logname, sizeof(logname), "bw", pre,
1636                                 td->thread_number, suf, o->per_job_logs);
1637                 setup_log(&td->bw_log, &p, logname);
1638         }
1639         if (o->write_iops_log) {
1640                 struct log_params p = {
1641                         .td = td,
1642                         .avg_msec = o->log_avg_msec,
1643                         .hist_msec = o->log_hist_msec,
1644                         .hist_coarseness = o->log_hist_coarseness,
1645                         .log_type = IO_LOG_TYPE_IOPS,
1646                         .log_offset = o->log_offset,
1647                         .log_gz = o->log_gz,
1648                         .log_gz_store = o->log_gz_store,
1649                 };
1650                 const char *pre = make_log_name(o->iops_log_file, o->name);
1651                 const char *suf;
1652
1653                 if (fio_option_is_set(o, iops_avg_time))
1654                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1655                 else
1656                         o->iops_avg_time = p.avg_msec;
1657
1658                 p.hist_msec = o->log_hist_msec;
1659                 p.hist_coarseness = o->log_hist_coarseness;
1660
1661                 if (p.log_gz_store)
1662                         suf = "log.fz";
1663                 else
1664                         suf = "log";
1665
1666                 gen_log_name(logname, sizeof(logname), "iops", pre,
1667                                 td->thread_number, suf, o->per_job_logs);
1668                 setup_log(&td->iops_log, &p, logname);
1669         }
1670
1671         if (!o->name)
1672                 o->name = strdup(jobname);
1673
1674         if (output_format & FIO_OUTPUT_NORMAL) {
1675                 if (!job_add_num) {
1676                         if (is_backend && !recursed)
1677                                 fio_server_send_add_job(td);
1678
1679                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1680                                 char *c1, *c2, *c3, *c4;
1681                                 char *c5 = NULL, *c6 = NULL;
1682                                 int i2p = is_power_of_2(o->kb_base);
1683                                 struct buf_output out;
1684
1685                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1686                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1687                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1688                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1689
1690                                 if (!o->bs_is_seq_rand) {
1691                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1692                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1693                                 }
1694
1695                                 buf_output_init(&out);
1696                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1697                                                         td->groupid,
1698                                                         ddir_str(o->td_ddir));
1699
1700                                 if (o->bs_is_seq_rand)
1701                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1702                                                         c1, c2, c3, c4);
1703                                 else
1704                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1705                                                         c1, c2, c3, c4, c5, c6);
1706
1707                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1708                                                 td->io_ops->name, o->iodepth);
1709                                 log_info_buf(out.buf, out.buflen);
1710                                 buf_output_free(&out);
1711
1712                                 free(c1);
1713                                 free(c2);
1714                                 free(c3);
1715                                 free(c4);
1716                                 free(c5);
1717                                 free(c6);
1718                         }
1719                 } else if (job_add_num == 1)
1720                         log_info("...\n");
1721         }
1722
1723         if (td_steadystate_init(td))
1724                 goto err;
1725
1726         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1727                 goto err;
1728
1729         if (merge_blktrace_only) {
1730                 put_job(td);
1731                 return 0;
1732         }
1733
1734         /*
1735          * recurse add identical jobs, clear numjobs and stonewall options
1736          * as they don't apply to sub-jobs
1737          */
1738         numjobs = o->numjobs;
1739         while (--numjobs) {
1740                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1741
1742                 if (!td_new)
1743                         goto err;
1744
1745                 td_new->o.numjobs = 1;
1746                 td_new->o.stonewall = 0;
1747                 td_new->o.new_group = 0;
1748                 td_new->subjob_number = numjobs;
1749                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1750                 td_new->o.ss_limit = o->ss_limit;
1751
1752                 if (file_alloced) {
1753                         if (td_new->files) {
1754                                 struct fio_file *f;
1755                                 for_each_file(td_new, f, i) {
1756                                         if (f->file_name)
1757                                                 sfree(f->file_name);
1758                                         sfree(f);
1759                                 }
1760                                 free(td_new->files);
1761                                 td_new->files = NULL;
1762                         }
1763                         td_new->files_index = 0;
1764                         td_new->files_size = 0;
1765                         if (td_new->o.filename) {
1766                                 free(td_new->o.filename);
1767                                 td_new->o.filename = NULL;
1768                         }
1769                 }
1770
1771                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1772                         goto err;
1773         }
1774
1775         return 0;
1776 err:
1777         put_job(td);
1778         return -1;
1779 }
1780
1781 /*
1782  * Parse as if 'o' was a command line
1783  */
1784 void add_job_opts(const char **o, int client_type)
1785 {
1786         struct thread_data *td, *td_parent;
1787         int i, in_global = 1;
1788         char jobname[32];
1789
1790         i = 0;
1791         td_parent = td = NULL;
1792         while (o[i]) {
1793                 if (!strncmp(o[i], "name", 4)) {
1794                         in_global = 0;
1795                         if (td)
1796                                 add_job(td, jobname, 0, 0, client_type);
1797                         td = NULL;
1798                         sprintf(jobname, "%s", o[i] + 5);
1799                 }
1800                 if (in_global && !td_parent)
1801                         td_parent = get_new_job(true, &def_thread, false, jobname);
1802                 else if (!in_global && !td) {
1803                         if (!td_parent)
1804                                 td_parent = &def_thread;
1805                         td = get_new_job(false, td_parent, false, jobname);
1806                 }
1807                 if (in_global)
1808                         fio_options_parse(td_parent, (char **) &o[i], 1);
1809                 else
1810                         fio_options_parse(td, (char **) &o[i], 1);
1811                 i++;
1812         }
1813
1814         if (td)
1815                 add_job(td, jobname, 0, 0, client_type);
1816 }
1817
1818 static int skip_this_section(const char *name)
1819 {
1820         int i;
1821
1822         if (!nr_job_sections)
1823                 return 0;
1824         if (!strncmp(name, "global", 6))
1825                 return 0;
1826
1827         for (i = 0; i < nr_job_sections; i++)
1828                 if (!strcmp(job_sections[i], name))
1829                         return 0;
1830
1831         return 1;
1832 }
1833
1834 static int is_empty_or_comment(char *line)
1835 {
1836         unsigned int i;
1837
1838         for (i = 0; i < strlen(line); i++) {
1839                 if (line[i] == ';')
1840                         return 1;
1841                 if (line[i] == '#')
1842                         return 1;
1843                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1844                         return 0;
1845         }
1846
1847         return 1;
1848 }
1849
1850 /*
1851  * This is our [ini] type file parser.
1852  */
1853 static int __parse_jobs_ini(struct thread_data *td,
1854                 char *file, int is_buf, int stonewall_flag, int type,
1855                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1856 {
1857         bool global = false;
1858         char *string;
1859         FILE *f;
1860         char *p;
1861         int ret = 0, stonewall;
1862         int first_sect = 1;
1863         int skip_fgets = 0;
1864         int inside_skip = 0;
1865         char **opts;
1866         int i, alloc_opts, num_opts;
1867
1868         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1869         assert(td || !nested);
1870
1871         if (is_buf)
1872                 f = NULL;
1873         else {
1874                 if (!strcmp(file, "-"))
1875                         f = stdin;
1876                 else
1877                         f = fopen(file, "r");
1878
1879                 if (!f) {
1880                         int __err = errno;
1881
1882                         log_err("fio: unable to open '%s' job file\n", file);
1883                         if (td)
1884                                 td_verror(td, __err, "job file open");
1885                         return 1;
1886                 }
1887         }
1888
1889         string = malloc(OPT_LEN_MAX);
1890
1891         /*
1892          * it's really 256 + small bit, 280 should suffice
1893          */
1894         if (!nested) {
1895                 name = malloc(280);
1896                 memset(name, 0, 280);
1897         }
1898
1899         opts = NULL;
1900         if (nested && popts) {
1901                 opts = *popts;
1902                 alloc_opts = *aopts;
1903                 num_opts = *nopts;
1904         }
1905
1906         if (!opts) {
1907                 alloc_opts = 8;
1908                 opts = malloc(sizeof(char *) * alloc_opts);
1909                 num_opts = 0;
1910         }
1911
1912         stonewall = stonewall_flag;
1913         do {
1914                 /*
1915                  * if skip_fgets is set, we already have loaded a line we
1916                  * haven't handled.
1917                  */
1918                 if (!skip_fgets) {
1919                         if (is_buf)
1920                                 p = strsep(&file, "\n");
1921                         else
1922                                 p = fgets(string, OPT_LEN_MAX, f);
1923                         if (!p)
1924                                 break;
1925                 }
1926
1927                 skip_fgets = 0;
1928                 strip_blank_front(&p);
1929                 strip_blank_end(p);
1930
1931                 dprint(FD_PARSE, "%s\n", p);
1932                 if (is_empty_or_comment(p))
1933                         continue;
1934
1935                 if (!nested) {
1936                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1937                                 if (inside_skip)
1938                                         continue;
1939
1940                                 log_err("fio: option <%s> outside of "
1941                                         "[] job section\n", p);
1942                                 ret = 1;
1943                                 break;
1944                         }
1945
1946                         name[strlen(name) - 1] = '\0';
1947
1948                         if (skip_this_section(name)) {
1949                                 inside_skip = 1;
1950                                 continue;
1951                         } else
1952                                 inside_skip = 0;
1953
1954                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1955
1956                         global = !strncmp(name, "global", 6);
1957
1958                         if (dump_cmdline) {
1959                                 if (first_sect)
1960                                         log_info("fio ");
1961                                 if (!global)
1962                                         log_info("--name=%s ", name);
1963                                 first_sect = 0;
1964                         }
1965
1966                         td = get_new_job(global, &def_thread, false, name);
1967                         if (!td) {
1968                                 ret = 1;
1969                                 break;
1970                         }
1971
1972                         /*
1973                          * Separate multiple job files by a stonewall
1974                          */
1975                         if (!global && stonewall) {
1976                                 td->o.stonewall = stonewall;
1977                                 stonewall = 0;
1978                         }
1979
1980                         num_opts = 0;
1981                         memset(opts, 0, alloc_opts * sizeof(char *));
1982                 }
1983                 else
1984                         skip_fgets = 1;
1985
1986                 while (1) {
1987                         if (!skip_fgets) {
1988                                 if (is_buf)
1989                                         p = strsep(&file, "\n");
1990                                 else
1991                                         p = fgets(string, OPT_LEN_MAX, f);
1992                                 if (!p)
1993                                         break;
1994                                 dprint(FD_PARSE, "%s", p);
1995                         }
1996                         else
1997                                 skip_fgets = 0;
1998
1999                         if (is_empty_or_comment(p))
2000                                 continue;
2001
2002                         strip_blank_front(&p);
2003
2004                         /*
2005                          * new section, break out and make sure we don't
2006                          * fgets() a new line at the top.
2007                          */
2008                         if (p[0] == '[') {
2009                                 if (nested) {
2010                                         log_err("No new sections in included files\n");
2011                                         ret = 1;
2012                                         goto out;
2013                                 }
2014
2015                                 skip_fgets = 1;
2016                                 break;
2017                         }
2018
2019                         strip_blank_end(p);
2020
2021                         if (!strncmp(p, "include", strlen("include"))) {
2022                                 char *filename = p + strlen("include") + 1,
2023                                         *ts, *full_fn = NULL;
2024
2025                                 /*
2026                                  * Allow for the include filename
2027                                  * specification to be relative.
2028                                  */
2029                                 if (access(filename, F_OK) &&
2030                                     (ts = strrchr(file, '/'))) {
2031                                         if (asprintf(&full_fn, "%.*s%s",
2032                                                  (int)(ts - file + 1), file,
2033                                                  filename) < 0) {
2034                                                 ret = ENOMEM;
2035                                                 break;
2036                                         }
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("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2177         printf("  --output\t\tWrite output to file\n");
2178         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2179         printf("  --minimal\t\tMinimal (terse) output\n");
2180         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2181         printf("  --terse-version=type\tSet terse version output format"
2182                 " (default 3, or 2 or 4)\n");
2183         printf("  --version\t\tPrint version info and exit\n");
2184         printf("  --help\t\tPrint this page\n");
2185         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2186         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2187         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2188                 " them\n");
2189         printf("  --enghelp=engine\tPrint ioengine help, or list"
2190                 " available ioengines\n");
2191         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2192                 " cmd\n");
2193         printf("  --showcmd\t\tTurn a job file into command line options\n");
2194         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2195         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2196         printf("  --eta-newline=t\tForce a new line for every 't'");
2197         printf(" period passed\n");
2198         printf("  --status-interval=t\tForce full status dump every");
2199         printf(" 't' period passed\n");
2200         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2201                 " writes\n");
2202         printf("  --section=name\tOnly run specified section in job file,"
2203                 " multiple sections can be specified\n");
2204         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2205                 " (def 16384)\n");
2206         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2207         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2208         printf("  --server=args\t\tStart a backend fio server\n");
2209         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2210         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2211         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2212         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2213                 "\t\t\t(option=system,percpu) or run unit work\n"
2214                 "\t\t\tcalibration only (option=calibrate)\n");
2215 #ifdef CONFIG_ZLIB
2216         printf("  --inflate-log=log\tInflate and output compressed log\n");
2217 #endif
2218         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2219         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2220         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2221         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2222         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2223         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2224 }
2225
2226 #ifdef FIO_INC_DEBUG
2227 const struct debug_level debug_levels[] = {
2228         { .name = "process",
2229           .help = "Process creation/exit logging",
2230           .shift = FD_PROCESS,
2231         },
2232         { .name = "file",
2233           .help = "File related action logging",
2234           .shift = FD_FILE,
2235         },
2236         { .name = "io",
2237           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2238           .shift = FD_IO,
2239         },
2240         { .name = "mem",
2241           .help = "Memory allocation/freeing logging",
2242           .shift = FD_MEM,
2243         },
2244         { .name = "blktrace",
2245           .help = "blktrace action logging",
2246           .shift = FD_BLKTRACE,
2247         },
2248         { .name = "verify",
2249           .help = "IO verification action logging",
2250           .shift = FD_VERIFY,
2251         },
2252         { .name = "random",
2253           .help = "Random generation logging",
2254           .shift = FD_RANDOM,
2255         },
2256         { .name = "parse",
2257           .help = "Parser logging",
2258           .shift = FD_PARSE,
2259         },
2260         { .name = "diskutil",
2261           .help = "Disk utility logging actions",
2262           .shift = FD_DISKUTIL,
2263         },
2264         { .name = "job",
2265           .help = "Logging related to creating/destroying jobs",
2266           .shift = FD_JOB,
2267         },
2268         { .name = "mutex",
2269           .help = "Mutex logging",
2270           .shift = FD_MUTEX
2271         },
2272         { .name = "profile",
2273           .help = "Logging related to profiles",
2274           .shift = FD_PROFILE,
2275         },
2276         { .name = "time",
2277           .help = "Logging related to time keeping functions",
2278           .shift = FD_TIME,
2279         },
2280         { .name = "net",
2281           .help = "Network logging",
2282           .shift = FD_NET,
2283         },
2284         { .name = "rate",
2285           .help = "Rate logging",
2286           .shift = FD_RATE,
2287         },
2288         { .name = "compress",
2289           .help = "Log compression logging",
2290           .shift = FD_COMPRESS,
2291         },
2292         { .name = "steadystate",
2293           .help = "Steady state detection logging",
2294           .shift = FD_STEADYSTATE,
2295         },
2296         { .name = "helperthread",
2297           .help = "Helper thread logging",
2298           .shift = FD_HELPERTHREAD,
2299         },
2300         { .name = "zbd",
2301           .help = "Zoned Block Device logging",
2302           .shift = FD_ZBD,
2303         },
2304         { .name = NULL, },
2305 };
2306
2307 static int set_debug(const char *string)
2308 {
2309         const struct debug_level *dl;
2310         char *p = (char *) string;
2311         char *opt;
2312         int i;
2313
2314         if (!string)
2315                 return 0;
2316
2317         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2318                 log_info("fio: dumping debug options:");
2319                 for (i = 0; debug_levels[i].name; i++) {
2320                         dl = &debug_levels[i];
2321                         log_info("%s,", dl->name);
2322                 }
2323                 log_info("all\n");
2324                 return 1;
2325         }
2326
2327         while ((opt = strsep(&p, ",")) != NULL) {
2328                 int found = 0;
2329
2330                 if (!strncmp(opt, "all", 3)) {
2331                         log_info("fio: set all debug options\n");
2332                         fio_debug = ~0UL;
2333                         continue;
2334                 }
2335
2336                 for (i = 0; debug_levels[i].name; i++) {
2337                         dl = &debug_levels[i];
2338                         found = !strncmp(opt, dl->name, strlen(dl->name));
2339                         if (!found)
2340                                 continue;
2341
2342                         if (dl->shift == FD_JOB) {
2343                                 opt = strchr(opt, ':');
2344                                 if (!opt) {
2345                                         log_err("fio: missing job number\n");
2346                                         break;
2347                                 }
2348                                 opt++;
2349                                 fio_debug_jobno = atoi(opt);
2350                                 log_info("fio: set debug jobno %d\n",
2351                                                         fio_debug_jobno);
2352                         } else {
2353                                 log_info("fio: set debug option %s\n", opt);
2354                                 fio_debug |= (1UL << dl->shift);
2355                         }
2356                         break;
2357                 }
2358
2359                 if (!found)
2360                         log_err("fio: debug mask %s not found\n", opt);
2361         }
2362         return 0;
2363 }
2364 #else
2365 static int set_debug(const char *string)
2366 {
2367         log_err("fio: debug tracing not included in build\n");
2368         return 1;
2369 }
2370 #endif
2371
2372 static void fio_options_fill_optstring(void)
2373 {
2374         char *ostr = cmd_optstr;
2375         int i, c;
2376
2377         c = i = 0;
2378         while (l_opts[i].name) {
2379                 ostr[c++] = l_opts[i].val;
2380                 if (l_opts[i].has_arg == required_argument)
2381                         ostr[c++] = ':';
2382                 else if (l_opts[i].has_arg == optional_argument) {
2383                         ostr[c++] = ':';
2384                         ostr[c++] = ':';
2385                 }
2386                 i++;
2387         }
2388         ostr[c] = '\0';
2389 }
2390
2391 static int client_flag_set(char c)
2392 {
2393         int i;
2394
2395         i = 0;
2396         while (l_opts[i].name) {
2397                 int val = l_opts[i].val;
2398
2399                 if (c == (val & 0xff))
2400                         return (val & FIO_CLIENT_FLAG);
2401
2402                 i++;
2403         }
2404
2405         return 0;
2406 }
2407
2408 static void parse_cmd_client(void *client, char *opt)
2409 {
2410         fio_client_add_cmd_option(client, opt);
2411 }
2412
2413 static void show_closest_option(const char *name)
2414 {
2415         int best_option, best_distance;
2416         int i, distance;
2417
2418         while (*name == '-')
2419                 name++;
2420
2421         best_option = -1;
2422         best_distance = INT_MAX;
2423         i = 0;
2424         while (l_opts[i].name) {
2425                 distance = string_distance(name, l_opts[i].name);
2426                 if (distance < best_distance) {
2427                         best_distance = distance;
2428                         best_option = i;
2429                 }
2430                 i++;
2431         }
2432
2433         if (best_option != -1 && string_distance_ok(name, best_distance))
2434                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2435 }
2436
2437 static int parse_output_format(const char *optarg)
2438 {
2439         char *p, *orig, *opt;
2440         int ret = 0;
2441
2442         p = orig = strdup(optarg);
2443
2444         output_format = 0;
2445
2446         while ((opt = strsep(&p, ",")) != NULL) {
2447                 if (!strcmp(opt, "minimal") ||
2448                     !strcmp(opt, "terse") ||
2449                     !strcmp(opt, "csv"))
2450                         output_format |= FIO_OUTPUT_TERSE;
2451                 else if (!strcmp(opt, "json"))
2452                         output_format |= FIO_OUTPUT_JSON;
2453                 else if (!strcmp(opt, "json+"))
2454                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2455                 else if (!strcmp(opt, "normal"))
2456                         output_format |= FIO_OUTPUT_NORMAL;
2457                 else {
2458                         log_err("fio: invalid output format %s\n", opt);
2459                         ret = 1;
2460                         break;
2461                 }
2462         }
2463
2464         free(orig);
2465         return ret;
2466 }
2467
2468 int parse_cmd_line(int argc, char *argv[], int client_type)
2469 {
2470         struct thread_data *td = NULL;
2471         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2472         char *ostr = cmd_optstr;
2473         char *pid_file = NULL;
2474         void *cur_client = NULL;
2475         bool backend = false;
2476
2477         /*
2478          * Reset optind handling, since we may call this multiple times
2479          * for the backend.
2480          */
2481         optind = 1;
2482
2483         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2484                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2485                         parse_cmd_client(cur_client, argv[optind - 1]);
2486                         c &= ~FIO_CLIENT_FLAG;
2487                 }
2488
2489                 switch (c) {
2490                 case 'a':
2491                         smalloc_pool_size = atoi(optarg);
2492                         smalloc_pool_size <<= 10;
2493                         sinit();
2494                         break;
2495                 case 'l':
2496                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2497                         do_exit++;
2498                         exit_val = 1;
2499                         break;
2500                 case 'b':
2501                         write_bw_log = true;
2502                         break;
2503                 case 'o': {
2504                         FILE *tmp;
2505
2506                         if (f_out && f_out != stdout)
2507                                 fclose(f_out);
2508
2509                         tmp = fopen(optarg, "w+");
2510                         if (!tmp) {
2511                                 log_err("fio: output file open error: %s\n", strerror(errno));
2512                                 exit_val = 1;
2513                                 do_exit++;
2514                                 break;
2515                         }
2516                         f_err = f_out = tmp;
2517                         break;
2518                         }
2519                 case 'm':
2520                         output_format = FIO_OUTPUT_TERSE;
2521                         break;
2522                 case 'F':
2523                         if (parse_output_format(optarg)) {
2524                                 log_err("fio: failed parsing output-format\n");
2525                                 exit_val = 1;
2526                                 do_exit++;
2527                                 break;
2528                         }
2529                         break;
2530                 case 'f':
2531                         output_format |= FIO_OUTPUT_TERSE;
2532                         break;
2533                 case 'h':
2534                         did_arg = true;
2535                         if (!cur_client) {
2536                                 usage(argv[0]);
2537                                 do_exit++;
2538                         }
2539                         break;
2540                 case 'c':
2541                         did_arg = true;
2542                         if (!cur_client) {
2543                                 fio_show_option_help(optarg);
2544                                 do_exit++;
2545                         }
2546                         break;
2547                 case 'i':
2548                         did_arg = true;
2549                         if (!cur_client) {
2550                                 fio_show_ioengine_help(optarg);
2551                                 do_exit++;
2552                         }
2553                         break;
2554                 case 's':
2555                         did_arg = true;
2556                         dump_cmdline = true;
2557                         break;
2558                 case 'r':
2559                         read_only = 1;
2560                         break;
2561                 case 'v':
2562                         did_arg = true;
2563                         if (!cur_client) {
2564                                 log_info("%s\n", fio_version_string);
2565                                 do_exit++;
2566                         }
2567                         break;
2568                 case 'V':
2569                         terse_version = atoi(optarg);
2570                         if (!(terse_version >= 2 && terse_version <= 5)) {
2571                                 log_err("fio: bad terse version format\n");
2572                                 exit_val = 1;
2573                                 do_exit++;
2574                         }
2575                         break;
2576                 case 'e':
2577                         if (!strcmp("always", optarg))
2578                                 eta_print = FIO_ETA_ALWAYS;
2579                         else if (!strcmp("never", optarg))
2580                                 eta_print = FIO_ETA_NEVER;
2581                         break;
2582                 case 'E': {
2583                         long long t = 0;
2584
2585                         if (check_str_time(optarg, &t, 1)) {
2586                                 log_err("fio: failed parsing eta time %s\n", optarg);
2587                                 exit_val = 1;
2588                                 do_exit++;
2589                                 break;
2590                         }
2591                         eta_new_line = t / 1000;
2592                         if (!eta_new_line) {
2593                                 log_err("fio: eta new line time too short\n");
2594                                 exit_val = 1;
2595                                 do_exit++;
2596                         }
2597                         break;
2598                         }
2599                 case 'O': {
2600                         long long t = 0;
2601
2602                         if (check_str_time(optarg, &t, 1)) {
2603                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2604                                 exit_val = 1;
2605                                 do_exit++;
2606                                 break;
2607                         }
2608                         eta_interval_msec = t / 1000;
2609                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2610                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2611                                 exit_val = 1;
2612                                 do_exit++;
2613                         }
2614                         break;
2615                         }
2616                 case 'd':
2617                         if (set_debug(optarg))
2618                                 do_exit++;
2619                         break;
2620                 case 'P':
2621                         did_arg = true;
2622                         parse_only = true;
2623                         break;
2624                 case 'x': {
2625                         size_t new_size;
2626
2627                         if (!strcmp(optarg, "global")) {
2628                                 log_err("fio: can't use global as only "
2629                                         "section\n");
2630                                 do_exit++;
2631                                 exit_val = 1;
2632                                 break;
2633                         }
2634                         new_size = (nr_job_sections + 1) * sizeof(char *);
2635                         job_sections = realloc(job_sections, new_size);
2636                         job_sections[nr_job_sections] = strdup(optarg);
2637                         nr_job_sections++;
2638                         break;
2639                         }
2640 #ifdef CONFIG_ZLIB
2641                 case 'X':
2642                         exit_val = iolog_file_inflate(optarg);
2643                         did_arg = true;
2644                         do_exit++;
2645                         break;
2646 #endif
2647                 case 'p':
2648                         did_arg = true;
2649                         if (exec_profile)
2650                                 free(exec_profile);
2651                         exec_profile = strdup(optarg);
2652                         break;
2653                 case FIO_GETOPT_JOB: {
2654                         const char *opt = l_opts[lidx].name;
2655                         char *val = optarg;
2656
2657                         if (!strncmp(opt, "name", 4) && td) {
2658                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2659                                 if (ret)
2660                                         goto out_free;
2661                                 td = NULL;
2662                                 did_arg = true;
2663                         }
2664                         if (!td) {
2665                                 int is_section = !strncmp(opt, "name", 4);
2666                                 int global = 0;
2667
2668                                 if (!is_section || !strncmp(val, "global", 6))
2669                                         global = 1;
2670
2671                                 if (is_section && skip_this_section(val))
2672                                         continue;
2673
2674                                 td = get_new_job(global, &def_thread, true, NULL);
2675                                 if (!td || ioengine_load(td)) {
2676                                         if (td) {
2677                                                 put_job(td);
2678                                                 td = NULL;
2679                                         }
2680                                         do_exit++;
2681                                         exit_val = 1;
2682                                         break;
2683                                 }
2684                                 fio_options_set_ioengine_opts(l_opts, td);
2685                         }
2686
2687                         if ((!val || !strlen(val)) &&
2688                             l_opts[lidx].has_arg == required_argument) {
2689                                 log_err("fio: option %s requires an argument\n", opt);
2690                                 ret = 1;
2691                         } else
2692                                 ret = fio_cmd_option_parse(td, opt, val);
2693
2694                         if (ret) {
2695                                 if (td) {
2696                                         put_job(td);
2697                                         td = NULL;
2698                                 }
2699                                 do_exit++;
2700                                 exit_val = 1;
2701                         }
2702
2703                         if (!ret && !strcmp(opt, "ioengine")) {
2704                                 if (ioengine_load(td)) {
2705                                         put_job(td);
2706                                         td = NULL;
2707                                         do_exit++;
2708                                         exit_val = 1;
2709                                         break;
2710                                 }
2711                                 fio_options_set_ioengine_opts(l_opts, td);
2712                         }
2713                         break;
2714                 }
2715                 case FIO_GETOPT_IOENGINE: {
2716                         const char *opt = l_opts[lidx].name;
2717                         char *val = optarg;
2718
2719                         if (!td)
2720                                 break;
2721
2722                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2723                         break;
2724                 }
2725                 case 'w':
2726                         warnings_fatal = 1;
2727                         break;
2728                 case 'j':
2729                         max_jobs = atoi(optarg);
2730                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2731                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2732                                 do_exit++;
2733                                 exit_val = 1;
2734                         }
2735                         break;
2736                 case 'S':
2737                         did_arg = true;
2738 #ifndef CONFIG_NO_SHM
2739                         if (nr_clients) {
2740                                 log_err("fio: can't be both client and server\n");
2741                                 do_exit++;
2742                                 exit_val = 1;
2743                                 break;
2744                         }
2745                         if (optarg)
2746                                 fio_server_set_arg(optarg);
2747                         is_backend = true;
2748                         backend = true;
2749 #else
2750                         log_err("fio: client/server requires SHM support\n");
2751                         do_exit++;
2752                         exit_val = 1;
2753 #endif
2754                         break;
2755                 case 'D':
2756                         if (pid_file)
2757                                 free(pid_file);
2758                         pid_file = strdup(optarg);
2759                         break;
2760                 case 'I':
2761                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2762                                 /* exit on error and calibration only */
2763                                 did_arg = true;
2764                                 do_exit++;
2765                                 if (ret == -1)
2766                                         exit_val = 1;
2767                         }
2768                         break;
2769                 case 'C':
2770                         did_arg = true;
2771                         if (is_backend) {
2772                                 log_err("fio: can't be both client and server\n");
2773                                 do_exit++;
2774                                 exit_val = 1;
2775                                 break;
2776                         }
2777                         /* if --client parameter contains a pathname */
2778                         if (0 == access(optarg, R_OK)) {
2779                                 /* file contains a list of host addrs or names */
2780                                 char hostaddr[PATH_MAX] = {0};
2781                                 char formatstr[8];
2782                                 FILE * hostf = fopen(optarg, "r");
2783                                 if (!hostf) {
2784                                         log_err("fio: could not open client list file %s for read\n", optarg);
2785                                         do_exit++;
2786                                         exit_val = 1;
2787                                         break;
2788                                 }
2789                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2790                                 /*
2791                                  * read at most PATH_MAX-1 chars from each
2792                                  * record in this file
2793                                  */
2794                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2795                                         /* expect EVERY host in file to be valid */
2796                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2797                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2798                                                 do_exit++;
2799                                                 exit_val = 1;
2800                                                 break;
2801                                         }
2802                                 }
2803                                 fclose(hostf);
2804                                 break; /* no possibility of job file for "this client only" */
2805                         }
2806                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2807                                 log_err("fio: failed adding client %s\n", optarg);
2808                                 do_exit++;
2809                                 exit_val = 1;
2810                                 break;
2811                         }
2812                         /*
2813                          * If the next argument exists and isn't an option,
2814                          * assume it's a job file for this client only.
2815                          */
2816                         while (optind < argc) {
2817                                 if (!strncmp(argv[optind], "--", 2) ||
2818                                     !strncmp(argv[optind], "-", 1))
2819                                         break;
2820
2821                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2822                                         break;
2823                                 optind++;
2824                         }
2825                         break;
2826                 case 'R':
2827                         did_arg = true;
2828                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2829                                 do_exit++;
2830                                 exit_val = 1;
2831                         }
2832                         break;
2833                 case 'T':
2834                         did_arg = true;
2835                         do_exit++;
2836                         exit_val = fio_monotonic_clocktest(1);
2837                         break;
2838                 case 'G':
2839                         did_arg = true;
2840                         do_exit++;
2841                         exit_val = fio_crctest(optarg);
2842                         break;
2843                 case 'M':
2844                         did_arg = true;
2845                         do_exit++;
2846                         exit_val = fio_memcpy_test(optarg);
2847                         break;
2848                 case 'L': {
2849                         long long val;
2850
2851                         if (check_str_time(optarg, &val, 1)) {
2852                                 log_err("fio: failed parsing time %s\n", optarg);
2853                                 do_exit++;
2854                                 exit_val = 1;
2855                                 break;
2856                         }
2857                         if (val < 1000) {
2858                                 log_err("fio: status interval too small\n");
2859                                 do_exit++;
2860                                 exit_val = 1;
2861                         }
2862                         status_interval = val / 1000;
2863                         break;
2864                         }
2865                 case 'W':
2866                         if (trigger_file)
2867                                 free(trigger_file);
2868                         trigger_file = strdup(optarg);
2869                         break;
2870                 case 'H':
2871                         if (trigger_cmd)
2872                                 free(trigger_cmd);
2873                         trigger_cmd = strdup(optarg);
2874                         break;
2875                 case 'J':
2876                         if (trigger_remote_cmd)
2877                                 free(trigger_remote_cmd);
2878                         trigger_remote_cmd = strdup(optarg);
2879                         break;
2880                 case 'K':
2881                         if (aux_path)
2882                                 free(aux_path);
2883                         aux_path = strdup(optarg);
2884                         break;
2885                 case 'B':
2886                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2887                                 log_err("fio: failed parsing time %s\n", optarg);
2888                                 do_exit++;
2889                                 exit_val = 1;
2890                         }
2891                         trigger_timeout /= 1000000;
2892                         break;
2893
2894                 case 'A':
2895                         did_arg = true;
2896                         merge_blktrace_only = true;
2897                         break;
2898                 case '?':
2899                         log_err("%s: unrecognized option '%s'\n", argv[0],
2900                                                         argv[optind - 1]);
2901                         show_closest_option(argv[optind - 1]);
2902                         /* fall through */
2903                 default:
2904                         do_exit++;
2905                         exit_val = 1;
2906                         break;
2907                 }
2908                 if (do_exit)
2909                         break;
2910         }
2911
2912         if (do_exit && !(is_backend || nr_clients))
2913                 exit(exit_val);
2914
2915         if (nr_clients && fio_clients_connect())
2916                 exit(1);
2917
2918         if (is_backend && backend)
2919                 return fio_start_server(pid_file);
2920         else if (pid_file)
2921                 free(pid_file);
2922
2923         if (td) {
2924                 if (!ret) {
2925                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2926                         if (ret)
2927                                 exit(1);
2928                 }
2929         }
2930
2931         while (!ret && optind < argc) {
2932                 ini_idx++;
2933                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2934                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2935                 optind++;
2936         }
2937
2938 out_free:
2939         return ini_idx;
2940 }
2941
2942 int fio_init_options(void)
2943 {
2944         f_out = stdout;
2945         f_err = stderr;
2946
2947         fio_options_fill_optstring();
2948         fio_options_dup_and_init(l_opts);
2949
2950         atexit(free_shm);
2951
2952         if (fill_def_thread())
2953                 return 1;
2954
2955         return 0;
2956 }
2957
2958 extern int fio_check_options(struct thread_options *);
2959
2960 int parse_options(int argc, char *argv[])
2961 {
2962         const int type = FIO_CLIENT_TYPE_CLI;
2963         int job_files, i;
2964
2965         if (fio_init_options())
2966                 return 1;
2967         if (fio_test_cconv(&def_thread.o))
2968                 log_err("fio: failed internal cconv test\n");
2969
2970         job_files = parse_cmd_line(argc, argv, type);
2971
2972         if (job_files > 0) {
2973                 for (i = 0; i < job_files; i++) {
2974                         if (i && fill_def_thread())
2975                                 return 1;
2976                         if (nr_clients) {
2977                                 if (fio_clients_send_ini(ini_file[i]))
2978                                         return 1;
2979                                 free(ini_file[i]);
2980                         } else if (!is_backend) {
2981                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2982                                         return 1;
2983                                 free(ini_file[i]);
2984                         }
2985                 }
2986         } else if (nr_clients) {
2987                 if (fill_def_thread())
2988                         return 1;
2989                 if (fio_clients_send_ini(NULL))
2990                         return 1;
2991         }
2992
2993         free(ini_file);
2994         fio_options_free(&def_thread);
2995         filesetup_mem_free();
2996
2997         if (!thread_number) {
2998                 if (parse_dryrun())
2999                         return 0;
3000                 if (exec_profile)
3001                         return 0;
3002                 if (is_backend || nr_clients)
3003                         return 0;
3004                 if (did_arg)
3005                         return 0;
3006
3007                 log_err("No job(s) defined\n\n");
3008                 usage(argv[0]);
3009                 return 1;
3010         }
3011
3012         if (output_format & FIO_OUTPUT_NORMAL)
3013                 log_info("%s\n", fio_version_string);
3014
3015         return 0;
3016 }
3017
3018 void options_default_fill(struct thread_options *o)
3019 {
3020         memcpy(o, &def_thread.o, sizeof(*o));
3021 }
3022
3023 struct thread_data *get_global_options(void)
3024 {
3025         return &def_thread;
3026 }