Fixup two compile warnings
[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 <fcntl.h>
8 #include <ctype.h>
9 #include <string.h>
10 #include <errno.h>
11 #include <sys/ipc.h>
12 #include <sys/types.h>
13 #include <sys/stat.h>
14
15 #include "fio.h"
16 #ifndef FIO_NO_HAVE_SHM_H
17 #include <sys/shm.h>
18 #endif
19
20 #include "parse.h"
21 #include "smalloc.h"
22 #include "filehash.h"
23 #include "verify.h"
24 #include "profile.h"
25 #include "server.h"
26 #include "idletime.h"
27 #include "filelock.h"
28
29 #include "oslib/getopt.h"
30 #include "oslib/strcasestr.h"
31
32 #include "crc/test.h"
33
34 const char fio_version_string[] = FIO_VERSION;
35
36 #define FIO_RANDSEED            (0xb1899bedUL)
37
38 static char **ini_file;
39 static int max_jobs = FIO_MAX_JOBS;
40 static int dump_cmdline;
41 static long long def_timeout;
42 static int parse_only;
43
44 static struct thread_data def_thread;
45 struct thread_data *threads = NULL;
46 static char **job_sections;
47 static int nr_job_sections;
48
49 int exitall_on_terminate = 0;
50 int output_format = FIO_OUTPUT_NORMAL;
51 int eta_print = FIO_ETA_AUTO;
52 int eta_new_line = 0;
53 FILE *f_out = NULL;
54 FILE *f_err = NULL;
55 char *exec_profile = NULL;
56 int warnings_fatal = 0;
57 int terse_version = 3;
58 int is_backend = 0;
59 int nr_clients = 0;
60 int log_syslog = 0;
61
62 int write_bw_log = 0;
63 int read_only = 0;
64 int status_interval = 0;
65
66 char *trigger_file = NULL;
67 long long trigger_timeout = 0;
68 char *trigger_cmd = NULL;
69 char *trigger_remote_cmd = NULL;
70
71 char *aux_path = NULL;
72
73 static int prev_group_jobs;
74
75 unsigned long fio_debug = 0;
76 unsigned int fio_debug_jobno = -1;
77 unsigned int *fio_debug_jobp = NULL;
78
79 static char cmd_optstr[256];
80 static int did_arg;
81
82 #define FIO_CLIENT_FLAG         (1 << 16)
83
84 /*
85  * Command line options. These will contain the above, plus a few
86  * extra that only pertain to fio itself and not jobs.
87  */
88 static struct option l_opts[FIO_NR_OPTIONS] = {
89         {
90                 .name           = (char *) "output",
91                 .has_arg        = required_argument,
92                 .val            = 'o' | FIO_CLIENT_FLAG,
93         },
94         {
95                 .name           = (char *) "timeout",
96                 .has_arg        = required_argument,
97                 .val            = 't' | FIO_CLIENT_FLAG,
98         },
99         {
100                 .name           = (char *) "latency-log",
101                 .has_arg        = required_argument,
102                 .val            = 'l' | FIO_CLIENT_FLAG,
103         },
104         {
105                 .name           = (char *) "bandwidth-log",
106                 .has_arg        = required_argument,
107                 .val            = 'b' | FIO_CLIENT_FLAG,
108         },
109         {
110                 .name           = (char *) "minimal",
111                 .has_arg        = no_argument,
112                 .val            = 'm' | FIO_CLIENT_FLAG,
113         },
114         {
115                 .name           = (char *) "output-format",
116                 .has_arg        = required_argument,
117                 .val            = 'F' | FIO_CLIENT_FLAG,
118         },
119         {
120                 .name           = (char *) "append-terse",
121                 .has_arg        = optional_argument,
122                 .val            = 'f',
123         },
124         {
125                 .name           = (char *) "version",
126                 .has_arg        = no_argument,
127                 .val            = 'v' | FIO_CLIENT_FLAG,
128         },
129         {
130                 .name           = (char *) "help",
131                 .has_arg        = no_argument,
132                 .val            = 'h' | FIO_CLIENT_FLAG,
133         },
134         {
135                 .name           = (char *) "cmdhelp",
136                 .has_arg        = optional_argument,
137                 .val            = 'c' | FIO_CLIENT_FLAG,
138         },
139         {
140                 .name           = (char *) "enghelp",
141                 .has_arg        = optional_argument,
142                 .val            = 'i' | FIO_CLIENT_FLAG,
143         },
144         {
145                 .name           = (char *) "showcmd",
146                 .has_arg        = no_argument,
147                 .val            = 's' | FIO_CLIENT_FLAG,
148         },
149         {
150                 .name           = (char *) "readonly",
151                 .has_arg        = no_argument,
152                 .val            = 'r' | FIO_CLIENT_FLAG,
153         },
154         {
155                 .name           = (char *) "eta",
156                 .has_arg        = required_argument,
157                 .val            = 'e' | FIO_CLIENT_FLAG,
158         },
159         {
160                 .name           = (char *) "eta-newline",
161                 .has_arg        = required_argument,
162                 .val            = 'E' | FIO_CLIENT_FLAG,
163         },
164         {
165                 .name           = (char *) "debug",
166                 .has_arg        = required_argument,
167                 .val            = 'd' | FIO_CLIENT_FLAG,
168         },
169         {
170                 .name           = (char *) "parse-only",
171                 .has_arg        = no_argument,
172                 .val            = 'P' | FIO_CLIENT_FLAG,
173         },
174         {
175                 .name           = (char *) "section",
176                 .has_arg        = required_argument,
177                 .val            = 'x' | FIO_CLIENT_FLAG,
178         },
179 #ifdef CONFIG_ZLIB
180         {
181                 .name           = (char *) "inflate-log",
182                 .has_arg        = required_argument,
183                 .val            = 'X' | FIO_CLIENT_FLAG,
184         },
185 #endif
186         {
187                 .name           = (char *) "alloc-size",
188                 .has_arg        = required_argument,
189                 .val            = 'a' | FIO_CLIENT_FLAG,
190         },
191         {
192                 .name           = (char *) "profile",
193                 .has_arg        = required_argument,
194                 .val            = 'p' | FIO_CLIENT_FLAG,
195         },
196         {
197                 .name           = (char *) "warnings-fatal",
198                 .has_arg        = no_argument,
199                 .val            = 'w' | FIO_CLIENT_FLAG,
200         },
201         {
202                 .name           = (char *) "max-jobs",
203                 .has_arg        = required_argument,
204                 .val            = 'j' | FIO_CLIENT_FLAG,
205         },
206         {
207                 .name           = (char *) "terse-version",
208                 .has_arg        = required_argument,
209                 .val            = 'V' | FIO_CLIENT_FLAG,
210         },
211         {
212                 .name           = (char *) "server",
213                 .has_arg        = optional_argument,
214                 .val            = 'S',
215         },
216         {       .name           = (char *) "daemonize",
217                 .has_arg        = required_argument,
218                 .val            = 'D',
219         },
220         {
221                 .name           = (char *) "client",
222                 .has_arg        = required_argument,
223                 .val            = 'C',
224         },
225         {
226                 .name           = (char *) "remote-config",
227                 .has_arg        = required_argument,
228                 .val            = 'R',
229         },
230         {
231                 .name           = (char *) "cpuclock-test",
232                 .has_arg        = no_argument,
233                 .val            = 'T',
234         },
235         {
236                 .name           = (char *) "crctest",
237                 .has_arg        = optional_argument,
238                 .val            = 'G',
239         },
240         {
241                 .name           = (char *) "idle-prof",
242                 .has_arg        = required_argument,
243                 .val            = 'I',
244         },
245         {
246                 .name           = (char *) "status-interval",
247                 .has_arg        = required_argument,
248                 .val            = 'L',
249         },
250         {
251                 .name           = (char *) "trigger-file",
252                 .has_arg        = required_argument,
253                 .val            = 'W',
254         },
255         {
256                 .name           = (char *) "trigger-timeout",
257                 .has_arg        = required_argument,
258                 .val            = 'B',
259         },
260         {
261                 .name           = (char *) "trigger",
262                 .has_arg        = required_argument,
263                 .val            = 'H',
264         },
265         {
266                 .name           = (char *) "trigger-remote",
267                 .has_arg        = required_argument,
268                 .val            = 'J',
269         },
270         {
271                 .name           = (char *) "aux-path",
272                 .has_arg        = required_argument,
273                 .val            = 'K',
274         },
275         {
276                 .name           = NULL,
277         },
278 };
279
280 void free_threads_shm(void)
281 {
282         if (threads) {
283                 void *tp = threads;
284 #ifndef CONFIG_NO_SHM
285                 struct shmid_ds sbuf;
286
287                 threads = NULL;
288                 shmdt(tp);
289                 shmctl(shm_id, IPC_RMID, &sbuf);
290                 shm_id = -1;
291 #else
292                 threads = NULL;
293                 free(tp);
294 #endif
295         }
296 }
297
298 static void free_shm(void)
299 {
300         if (threads) {
301                 file_hash_exit();
302                 flow_exit();
303                 fio_debug_jobp = NULL;
304                 free_threads_shm();
305         }
306
307         free(trigger_file);
308         free(trigger_cmd);
309         free(trigger_remote_cmd);
310         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
311
312         options_free(fio_options, &def_thread.o);
313         fio_filelock_exit();
314         scleanup();
315 }
316
317 /*
318  * The thread area is shared between the main process and the job
319  * threads/processes. So setup a shared memory segment that will hold
320  * all the job info. We use the end of the region for keeping track of
321  * open files across jobs, for file sharing.
322  */
323 static int setup_thread_area(void)
324 {
325         void *hash;
326
327         if (threads)
328                 return 0;
329
330         /*
331          * 1024 is too much on some machines, scale max_jobs if
332          * we get a failure that looks like too large a shm segment
333          */
334         do {
335                 size_t size = max_jobs * sizeof(struct thread_data);
336
337                 size += file_hash_size;
338                 size += sizeof(unsigned int);
339
340 #ifndef CONFIG_NO_SHM
341                 shm_id = shmget(0, size, IPC_CREAT | 0600);
342                 if (shm_id != -1)
343                         break;
344                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
345                         perror("shmget");
346                         break;
347                 }
348 #else
349                 threads = malloc(size);
350                 if (threads)
351                         break;
352 #endif
353
354                 max_jobs >>= 1;
355         } while (max_jobs);
356
357 #ifndef CONFIG_NO_SHM
358         if (shm_id == -1)
359                 return 1;
360
361         threads = shmat(shm_id, NULL, 0);
362         if (threads == (void *) -1) {
363                 perror("shmat");
364                 return 1;
365         }
366 #endif
367
368         memset(threads, 0, max_jobs * sizeof(struct thread_data));
369         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
370         fio_debug_jobp = (void *) hash + file_hash_size;
371         *fio_debug_jobp = -1;
372         file_hash_init(hash);
373
374         flow_init();
375
376         return 0;
377 }
378
379 static void set_cmd_options(struct thread_data *td)
380 {
381         struct thread_options *o = &td->o;
382
383         if (!o->timeout)
384                 o->timeout = def_timeout;
385 }
386
387 static void dump_print_option(struct print_option *p)
388 {
389         const char *delim;
390
391         if (!strcmp("description", p->name))
392                 delim = "\"";
393         else
394                 delim = "";
395
396         log_info("--%s%s", p->name, p->value ? "" : " ");
397         if (p->value)
398                 log_info("=%s%s%s ", delim, p->value, delim);
399 }
400
401 static void dump_opt_list(struct thread_data *td)
402 {
403         struct flist_head *entry;
404         struct print_option *p;
405
406         if (flist_empty(&td->opt_list))
407                 return;
408
409         flist_for_each(entry, &td->opt_list) {
410                 p = flist_entry(entry, struct print_option, list);
411                 dump_print_option(p);
412         }
413 }
414
415 static void fio_dump_options_free(struct thread_data *td)
416 {
417         while (!flist_empty(&td->opt_list)) {
418                 struct print_option *p;
419
420                 p = flist_first_entry(&td->opt_list, struct print_option, list);
421                 flist_del_init(&p->list);
422                 free(p->name);
423                 free(p->value);
424                 free(p);
425         }
426 }
427
428 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
429 {
430         struct flist_head *entry;
431
432         if (flist_empty(&src->opt_list))
433                 return;
434
435         flist_for_each(entry, &src->opt_list) {
436                 struct print_option *srcp, *dstp;
437
438                 srcp = flist_entry(entry, struct print_option, list);
439                 dstp = malloc(sizeof(*dstp));
440                 dstp->name = strdup(srcp->name);
441                 if (srcp->value)
442                         dstp->value = strdup(srcp->value);
443                 else
444                         dstp->value = NULL;
445                 flist_add_tail(&dstp->list, &dst->opt_list);
446         }
447 }
448
449 /*
450  * Return a free job structure.
451  */
452 static struct thread_data *get_new_job(int global, struct thread_data *parent,
453                                        int preserve_eo, const char *jobname)
454 {
455         struct thread_data *td;
456
457         if (global) {
458                 set_cmd_options(&def_thread);
459                 return &def_thread;
460         }
461         if (setup_thread_area()) {
462                 log_err("error: failed to setup shm segment\n");
463                 return NULL;
464         }
465         if (thread_number >= max_jobs) {
466                 log_err("error: maximum number of jobs (%d) reached.\n",
467                                 max_jobs);
468                 return NULL;
469         }
470
471         td = &threads[thread_number++];
472         *td = *parent;
473
474         INIT_FLIST_HEAD(&td->opt_list);
475         if (parent != &def_thread)
476                 copy_opt_list(td, parent);
477
478         td->io_ops = NULL;
479         if (!preserve_eo)
480                 td->eo = NULL;
481
482         td->o.uid = td->o.gid = -1U;
483
484         dup_files(td, parent);
485         fio_options_mem_dupe(td);
486
487         profile_add_hooks(td);
488
489         td->thread_number = thread_number;
490         td->subjob_number = 0;
491
492         if (jobname)
493                 td->o.name = strdup(jobname);
494
495         if (!parent->o.group_reporting || parent == &def_thread)
496                 stat_number++;
497
498         set_cmd_options(td);
499         return td;
500 }
501
502 static void put_job(struct thread_data *td)
503 {
504         if (td == &def_thread)
505                 return;
506
507         profile_td_exit(td);
508         flow_exit_job(td);
509
510         if (td->error)
511                 log_info("fio: %s\n", td->verror);
512
513         fio_options_free(td);
514         fio_dump_options_free(td);
515         if (td->io_ops)
516                 free_ioengine(td);
517
518         if (td->o.name)
519                 free(td->o.name);
520
521         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
522         thread_number--;
523 }
524
525 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
526 {
527         unsigned int bs = td->o.min_bs[ddir];
528
529         assert(ddir_rw(ddir));
530
531         if (td->o.rate[ddir])
532                 td->rate_bps[ddir] = td->o.rate[ddir];
533         else
534                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
535
536         if (!td->rate_bps[ddir]) {
537                 log_err("rate lower than supported\n");
538                 return -1;
539         }
540
541         td->rate_next_io_time[ddir] = 0;
542         td->rate_io_issue_bytes[ddir] = 0;
543         td->last_usec = 0;
544         return 0;
545 }
546
547 static int setup_rate(struct thread_data *td)
548 {
549         int ret = 0;
550
551         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
552                 ret = __setup_rate(td, DDIR_READ);
553         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
554                 ret |= __setup_rate(td, DDIR_WRITE);
555         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
556                 ret |= __setup_rate(td, DDIR_TRIM);
557
558         return ret;
559 }
560
561 static int fixed_block_size(struct thread_options *o)
562 {
563         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
564                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
565                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
566                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
567                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
568 }
569
570
571 static unsigned long long get_rand_start_delay(struct thread_data *td)
572 {
573         unsigned long long delayrange;
574         uint64_t frand_max;
575         unsigned long r;
576
577         delayrange = td->o.start_delay_high - td->o.start_delay;
578
579         frand_max = rand_max(&td->delay_state);
580         r = __rand(&td->delay_state);
581         delayrange = (unsigned long long) ((double) delayrange * (r / (frand_max + 1.0)));
582
583         delayrange += td->o.start_delay;
584         return delayrange;
585 }
586
587 /*
588  * Lazy way of fixing up options that depend on each other. We could also
589  * define option callback handlers, but this is easier.
590  */
591 static int fixup_options(struct thread_data *td)
592 {
593         struct thread_options *o = &td->o;
594         int ret = 0;
595
596 #ifndef FIO_HAVE_PSHARED_MUTEX
597         if (!o->use_thread) {
598                 log_info("fio: this platform does not support process shared"
599                          " mutexes, forcing use of threads. Use the 'thread'"
600                          " option to get rid of this warning.\n");
601                 o->use_thread = 1;
602                 ret = warnings_fatal;
603         }
604 #endif
605
606         if (o->write_iolog_file && o->read_iolog_file) {
607                 log_err("fio: read iolog overrides write_iolog\n");
608                 free(o->write_iolog_file);
609                 o->write_iolog_file = NULL;
610                 ret = warnings_fatal;
611         }
612
613         /*
614          * only really works with 1 file
615          */
616         if (o->zone_size && o->open_files > 1)
617                 o->zone_size = 0;
618
619         /*
620          * If zone_range isn't specified, backward compatibility dictates it
621          * should be made equal to zone_size.
622          */
623         if (o->zone_size && !o->zone_range)
624                 o->zone_range = o->zone_size;
625
626         /*
627          * Reads can do overwrites, we always need to pre-create the file
628          */
629         if (td_read(td) || td_rw(td))
630                 o->overwrite = 1;
631
632         if (!o->min_bs[DDIR_READ])
633                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
634         if (!o->max_bs[DDIR_READ])
635                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
636         if (!o->min_bs[DDIR_WRITE])
637                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
638         if (!o->max_bs[DDIR_WRITE])
639                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
640         if (!o->min_bs[DDIR_TRIM])
641                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
642         if (!o->max_bs[DDIR_TRIM])
643                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
644
645         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
646         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
647
648         /*
649          * For random IO, allow blockalign offset other than min_bs.
650          */
651         if (!o->ba[DDIR_READ] || !td_random(td))
652                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
653         if (!o->ba[DDIR_WRITE] || !td_random(td))
654                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
655         if (!o->ba[DDIR_TRIM] || !td_random(td))
656                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
657
658         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
659             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
660             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
661             !o->norandommap) {
662                 log_err("fio: Any use of blockalign= turns off randommap\n");
663                 o->norandommap = 1;
664                 ret = warnings_fatal;
665         }
666
667         if (!o->file_size_high)
668                 o->file_size_high = o->file_size_low;
669
670         if (o->start_delay_high)
671                 o->start_delay = get_rand_start_delay(td);
672
673         if (o->norandommap && o->verify != VERIFY_NONE
674             && !fixed_block_size(o))  {
675                 log_err("fio: norandommap given for variable block sizes, "
676                         "verify limited\n");
677                 ret = warnings_fatal;
678         }
679         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
680                 log_err("fio: bs_unaligned may not work with raw io\n");
681
682         /*
683          * thinktime_spin must be less than thinktime
684          */
685         if (o->thinktime_spin > o->thinktime)
686                 o->thinktime_spin = o->thinktime;
687
688         /*
689          * The low water mark cannot be bigger than the iodepth
690          */
691         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
692                 o->iodepth_low = o->iodepth;
693
694         /*
695          * If batch number isn't set, default to the same as iodepth
696          */
697         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
698                 o->iodepth_batch = o->iodepth;
699
700         /*
701          * If max batch complete number isn't set or set incorrectly,
702          * default to the same as iodepth_batch_complete_min
703          */
704         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
705                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
706
707         if (o->nr_files > td->files_index)
708                 o->nr_files = td->files_index;
709
710         if (o->open_files > o->nr_files || !o->open_files)
711                 o->open_files = o->nr_files;
712
713         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
714             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
715             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
716             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
717                 log_err("fio: rate and rate_iops are mutually exclusive\n");
718                 ret = 1;
719         }
720         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
721             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
722             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
723             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
724             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
725             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
726                 log_err("fio: minimum rate exceeds rate\n");
727                 ret = 1;
728         }
729
730         if (!o->timeout && o->time_based) {
731                 log_err("fio: time_based requires a runtime/timeout setting\n");
732                 o->time_based = 0;
733                 ret = warnings_fatal;
734         }
735
736         if (o->fill_device && !o->size)
737                 o->size = -1ULL;
738
739         if (o->verify != VERIFY_NONE) {
740                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
741                         log_info("Multiple writers may overwrite blocks that "
742                                 "belong to other jobs. This can cause "
743                                 "verification failures.\n");
744                         ret = warnings_fatal;
745                 }
746
747                 if (!fio_option_is_set(o, refill_buffers))
748                         o->refill_buffers = 1;
749
750                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
751                     !o->verify_interval)
752                         o->verify_interval = o->min_bs[DDIR_WRITE];
753
754                 /*
755                  * Verify interval must be smaller or equal to the
756                  * write size.
757                  */
758                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
759                         o->verify_interval = o->min_bs[DDIR_WRITE];
760                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
761                         o->verify_interval = o->min_bs[DDIR_READ];
762         }
763
764         if (o->pre_read) {
765                 o->invalidate_cache = 0;
766                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
767                         log_info("fio: cannot pre-read files with an IO engine"
768                                  " that isn't seekable. Pre-read disabled.\n");
769                         ret = warnings_fatal;
770                 }
771         }
772
773         if (!o->unit_base) {
774                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
775                         o->unit_base = 1;
776                 else
777                         o->unit_base = 8;
778         }
779
780 #ifndef CONFIG_FDATASYNC
781         if (o->fdatasync_blocks) {
782                 log_info("fio: this platform does not support fdatasync()"
783                          " falling back to using fsync().  Use the 'fsync'"
784                          " option instead of 'fdatasync' to get rid of"
785                          " this warning\n");
786                 o->fsync_blocks = o->fdatasync_blocks;
787                 o->fdatasync_blocks = 0;
788                 ret = warnings_fatal;
789         }
790 #endif
791
792 #ifdef WIN32
793         /*
794          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
795          * so fail if we're passed those flags
796          */
797         if (td_ioengine_flagged(td, FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
798                 log_err("fio: Windows does not support direct or non-buffered io with"
799                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
800                                 " with 'direct=1' and 'iodepth=1' instead.\n");
801                 ret = 1;
802         }
803 #endif
804
805         /*
806          * For fully compressible data, just zero them at init time.
807          * It's faster than repeatedly filling it. For non-zero
808          * compression, we should have refill_buffers set. Set it, unless
809          * the job file already changed it.
810          */
811         if (o->compress_percentage) {
812                 if (o->compress_percentage == 100) {
813                         o->zero_buffers = 1;
814                         o->compress_percentage = 0;
815                 } else if (!fio_option_is_set(o, refill_buffers))
816                         o->refill_buffers = 1;
817         }
818
819         /*
820          * Using a non-uniform random distribution excludes usage of
821          * a random map
822          */
823         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
824                 td->o.norandommap = 1;
825
826         /*
827          * If size is set but less than the min block size, complain
828          */
829         if (o->size && o->size < td_min_bs(td)) {
830                 log_err("fio: size too small, must be larger than the IO size: %llu\n", (unsigned long long) o->size);
831                 ret = 1;
832         }
833
834         /*
835          * O_ATOMIC implies O_DIRECT
836          */
837         if (td->o.oatomic)
838                 td->o.odirect = 1;
839
840         /*
841          * If randseed is set, that overrides randrepeat
842          */
843         if (fio_option_is_set(&td->o, rand_seed))
844                 td->o.rand_repeatable = 0;
845
846         if (td_ioengine_flagged(td, FIO_NOEXTEND) && td->o.file_append) {
847                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
848                 ret = 1;
849         }
850
851         if (fio_option_is_set(o, gtod_cpu)) {
852                 fio_gtod_init();
853                 fio_gtod_set_cpu(o->gtod_cpu);
854                 fio_gtod_offload = 1;
855         }
856
857         td->loops = o->loops;
858         if (!td->loops)
859                 td->loops = 1;
860
861         if (td->o.block_error_hist && td->o.nr_files != 1) {
862                 log_err("fio: block error histogram only available "
863                         "with a single file per job, but %d files "
864                         "provided\n", td->o.nr_files);
865                 ret = 1;
866         }
867
868         return ret;
869 }
870
871 /*
872  * This function leaks the buffer
873  */
874 char *fio_uint_to_kmg(unsigned int val)
875 {
876         char *buf = malloc(32);
877         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
878         char *p = post;
879
880         do {
881                 if (val & 1023)
882                         break;
883
884                 val >>= 10;
885                 p++;
886         } while (*p);
887
888         snprintf(buf, 32, "%u%c", val, *p);
889         return buf;
890 }
891
892 /* External engines are specified by "external:name.o") */
893 static const char *get_engine_name(const char *str)
894 {
895         char *p = strstr(str, ":");
896
897         if (!p)
898                 return str;
899
900         p++;
901         strip_blank_front(&p);
902         strip_blank_end(p);
903         return p;
904 }
905
906 static void init_rand_file_service(struct thread_data *td)
907 {
908         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
909         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
910
911         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
912                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
913                 zipf_disable_hash(&td->next_file_zipf);
914         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
915                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
916                 zipf_disable_hash(&td->next_file_zipf);
917         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
918                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
919                 gauss_disable_hash(&td->next_file_gauss);
920         }
921 }
922
923 void td_fill_verify_state_seed(struct thread_data *td)
924 {
925         bool use64;
926
927         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
928                 use64 = 1;
929         else
930                 use64 = 0;
931
932         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
933                 use64);
934 }
935
936 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
937 {
938         int i;
939
940         init_rand_seed(&td->bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF], use64);
941         td_fill_verify_state_seed(td);
942         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
943
944         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
945                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
946         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
947                 init_rand_file_service(td);
948
949         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
950         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
951         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
952         init_rand_seed(&td->poisson_state, td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
953         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
954         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
955
956         if (!td_random(td))
957                 return;
958
959         if (td->o.rand_repeatable)
960                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
961
962         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
963
964         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
965                 struct frand_state *s = &td->seq_rand_state[i];
966
967                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
968         }
969 }
970
971 void td_fill_rand_seeds(struct thread_data *td)
972 {
973         bool use64;
974
975         if (td->o.allrand_repeatable) {
976                 unsigned int i;
977
978                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
979                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
980                                 + i;
981         }
982
983         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
984                 use64 = 1;
985         else
986                 use64 = 0;
987
988         td_fill_rand_seeds_internal(td, use64);
989
990         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
991         frand_copy(&td->buf_state_prev, &td->buf_state);
992 }
993
994 /*
995  * Initializes the ioengine configured for a job, if it has not been done so
996  * already.
997  */
998 int ioengine_load(struct thread_data *td)
999 {
1000         const char *engine;
1001
1002         /*
1003          * Engine has already been loaded.
1004          */
1005         if (td->io_ops)
1006                 return 0;
1007         if (!td->o.ioengine) {
1008                 log_err("fio: internal fault, no IO engine specified\n");
1009                 return 1;
1010         }
1011
1012         engine = get_engine_name(td->o.ioengine);
1013         td->io_ops = load_ioengine(td, engine);
1014         if (!td->io_ops) {
1015                 log_err("fio: failed to load engine %s\n", engine);
1016                 return 1;
1017         }
1018
1019         if (td->io_ops->option_struct_size && td->io_ops->options) {
1020                 /*
1021                  * In cases where td->eo is set, clone it for a child thread.
1022                  * This requires that the parent thread has the same ioengine,
1023                  * but that requirement must be enforced by the code which
1024                  * cloned the thread.
1025                  */
1026                 void *origeo = td->eo;
1027                 /*
1028                  * Otherwise use the default thread options.
1029                  */
1030                 if (!origeo && td != &def_thread && def_thread.eo &&
1031                     def_thread.io_ops->options == td->io_ops->options)
1032                         origeo = def_thread.eo;
1033
1034                 options_init(td->io_ops->options);
1035                 td->eo = malloc(td->io_ops->option_struct_size);
1036                 /*
1037                  * Use the default thread as an option template if this uses the
1038                  * same options structure and there are non-default options
1039                  * used.
1040                  */
1041                 if (origeo) {
1042                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1043                         options_mem_dupe(td->eo, td->io_ops->options);
1044                 } else {
1045                         memset(td->eo, 0, td->io_ops->option_struct_size);
1046                         fill_default_options(td->eo, td->io_ops->options);
1047                 }
1048                 *(struct thread_data **)td->eo = td;
1049         }
1050
1051         if (td->o.odirect)
1052                 td->io_ops->flags |= FIO_RAWIO;
1053
1054         td_set_ioengine_flags(td);
1055         return 0;
1056 }
1057
1058 static void init_flags(struct thread_data *td)
1059 {
1060         struct thread_options *o = &td->o;
1061
1062         if (o->verify_backlog)
1063                 td->flags |= TD_F_VER_BACKLOG;
1064         if (o->trim_backlog)
1065                 td->flags |= TD_F_TRIM_BACKLOG;
1066         if (o->read_iolog_file)
1067                 td->flags |= TD_F_READ_IOLOG;
1068         if (o->refill_buffers)
1069                 td->flags |= TD_F_REFILL_BUFFERS;
1070         /*
1071          * Always scramble buffers if asked to
1072          */
1073         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1074                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1075         /*
1076          * But also scramble buffers, unless we were explicitly asked
1077          * to zero them.
1078          */
1079         if (o->scramble_buffers && !(o->zero_buffers &&
1080             fio_option_is_set(o, zero_buffers)))
1081                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1082         if (o->verify != VERIFY_NONE)
1083                 td->flags |= TD_F_VER_NONE;
1084
1085         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1086                 td->flags |= TD_F_NEED_LOCK;
1087 }
1088
1089 static int setup_random_seeds(struct thread_data *td)
1090 {
1091         unsigned long seed;
1092         unsigned int i;
1093
1094         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed))
1095                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
1096
1097         seed = td->o.rand_seed;
1098         for (i = 0; i < 4; i++)
1099                 seed *= 0x9e370001UL;
1100
1101         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1102                 td->rand_seeds[i] = seed * td->thread_number + i;
1103                 seed *= 0x9e370001UL;
1104         }
1105
1106         td_fill_rand_seeds(td);
1107         return 0;
1108 }
1109
1110 enum {
1111         FPRE_NONE = 0,
1112         FPRE_JOBNAME,
1113         FPRE_JOBNUM,
1114         FPRE_FILENUM
1115 };
1116
1117 static struct fpre_keyword {
1118         const char *keyword;
1119         size_t strlen;
1120         int key;
1121 } fpre_keywords[] = {
1122         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1123         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1124         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1125         { .keyword = NULL, },
1126         };
1127
1128 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1129                            const char *jobname, int jobnum, int filenum)
1130 {
1131         struct fpre_keyword *f;
1132         char copy[PATH_MAX];
1133         size_t dst_left = PATH_MAX - 1;
1134
1135         if (!o->filename_format || !strlen(o->filename_format)) {
1136                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1137                 return NULL;
1138         }
1139
1140         for (f = &fpre_keywords[0]; f->keyword; f++)
1141                 f->strlen = strlen(f->keyword);
1142
1143         buf[buf_size - 1] = '\0';
1144         strncpy(buf, o->filename_format, buf_size - 1);
1145
1146         memset(copy, 0, sizeof(copy));
1147         for (f = &fpre_keywords[0]; f->keyword; f++) {
1148                 do {
1149                         size_t pre_len, post_start = 0;
1150                         char *str, *dst = copy;
1151
1152                         str = strcasestr(buf, f->keyword);
1153                         if (!str)
1154                                 break;
1155
1156                         pre_len = str - buf;
1157                         if (strlen(str) != f->strlen)
1158                                 post_start = pre_len + f->strlen;
1159
1160                         if (pre_len) {
1161                                 strncpy(dst, buf, pre_len);
1162                                 dst += pre_len;
1163                                 dst_left -= pre_len;
1164                         }
1165
1166                         switch (f->key) {
1167                         case FPRE_JOBNAME: {
1168                                 int ret;
1169
1170                                 ret = snprintf(dst, dst_left, "%s", jobname);
1171                                 if (ret < 0)
1172                                         break;
1173                                 else if (ret > dst_left) {
1174                                         log_err("fio: truncated filename\n");
1175                                         dst += dst_left;
1176                                         dst_left = 0;
1177                                 } else {
1178                                         dst += ret;
1179                                         dst_left -= ret;
1180                                 }
1181                                 break;
1182                                 }
1183                         case FPRE_JOBNUM: {
1184                                 int ret;
1185
1186                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1187                                 if (ret < 0)
1188                                         break;
1189                                 else if (ret > dst_left) {
1190                                         log_err("fio: truncated filename\n");
1191                                         dst += dst_left;
1192                                         dst_left = 0;
1193                                 } else {
1194                                         dst += ret;
1195                                         dst_left -= ret;
1196                                 }
1197                                 break;
1198                                 }
1199                         case FPRE_FILENUM: {
1200                                 int ret;
1201
1202                                 ret = snprintf(dst, dst_left, "%d", filenum);
1203                                 if (ret < 0)
1204                                         break;
1205                                 else if (ret > dst_left) {
1206                                         log_err("fio: truncated filename\n");
1207                                         dst += dst_left;
1208                                         dst_left = 0;
1209                                 } else {
1210                                         dst += ret;
1211                                         dst_left -= ret;
1212                                 }
1213                                 break;
1214                                 }
1215                         default:
1216                                 assert(0);
1217                                 break;
1218                         }
1219
1220                         if (post_start)
1221                                 strncpy(dst, buf + post_start, dst_left);
1222
1223                         strncpy(buf, copy, buf_size - 1);
1224                 } while (1);
1225         }
1226
1227         return buf;
1228 }
1229
1230 bool parse_dryrun(void)
1231 {
1232         return dump_cmdline || parse_only;
1233 }
1234
1235 static void gen_log_name(char *name, size_t size, const char *logtype,
1236                          const char *logname, unsigned int num,
1237                          const char *suf, int per_job)
1238 {
1239         if (per_job)
1240                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1241         else
1242                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1243 }
1244
1245 static int check_waitees(char *waitee)
1246 {
1247         struct thread_data *td;
1248         int i, ret = 0;
1249
1250         for_each_td(td, i) {
1251                 if (td->subjob_number)
1252                         continue;
1253
1254                 ret += !strcmp(td->o.name, waitee);
1255         }
1256
1257         return ret;
1258 }
1259
1260 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1261 {
1262         int nw;
1263
1264         if (!o->wait_for)
1265                 return true;
1266
1267         if (!strcmp(jobname, o->wait_for)) {
1268                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1269                                 jobname, o->wait_for);
1270                 return false;
1271         }
1272
1273         if (!(nw = check_waitees(o->wait_for))) {
1274                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1275                 return false;
1276         }
1277
1278         if (nw > 1) {
1279                 log_err("%s: multiple waitees %s found,\n"
1280                         "please avoid duplicates when using wait_for option.\n",
1281                                 jobname, o->wait_for);
1282                 return false;
1283         }
1284
1285         return true;
1286 }
1287
1288 /*
1289  * Adds a job to the list of things todo. Sanitizes the various options
1290  * to make sure we don't have conflicts, and initializes various
1291  * members of td.
1292  */
1293 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1294                    int recursed, int client_type)
1295 {
1296         unsigned int i;
1297         char fname[PATH_MAX];
1298         int numjobs, file_alloced;
1299         struct thread_options *o = &td->o;
1300         char logname[PATH_MAX + 32];
1301
1302         /*
1303          * the def_thread is just for options, it's not a real job
1304          */
1305         if (td == &def_thread)
1306                 return 0;
1307
1308         init_flags(td);
1309
1310         /*
1311          * if we are just dumping the output command line, don't add the job
1312          */
1313         if (parse_dryrun()) {
1314                 put_job(td);
1315                 return 0;
1316         }
1317
1318         td->client_type = client_type;
1319
1320         if (profile_td_init(td))
1321                 goto err;
1322
1323         if (ioengine_load(td))
1324                 goto err;
1325
1326         file_alloced = 0;
1327         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1328                 file_alloced = 1;
1329
1330                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1331                         add_file(td, jobname, job_add_num, 0);
1332                 else {
1333                         for (i = 0; i < o->nr_files; i++)
1334                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1335                 }
1336         }
1337
1338         if (fixup_options(td))
1339                 goto err;
1340
1341         /*
1342          * Belongs to fixup_options, but o->name is not necessarily set as yet
1343          */
1344         if (!wait_for_ok(jobname, o))
1345                 goto err;
1346
1347         flow_init_job(td);
1348
1349         /*
1350          * IO engines only need this for option callbacks, and the address may
1351          * change in subprocesses.
1352          */
1353         if (td->eo)
1354                 *(struct thread_data **)td->eo = NULL;
1355
1356         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1357                 struct fio_file *f;
1358
1359                 for_each_file(td, f, i)
1360                         f->real_file_size = -1ULL;
1361         }
1362
1363         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1364
1365         td->ts.clat_percentiles = o->clat_percentiles;
1366         td->ts.percentile_precision = o->percentile_precision;
1367         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1368
1369         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1370                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1371                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1372                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1373                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1374         }
1375         td->ddir_seq_nr = o->ddir_seq_nr;
1376
1377         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1378                 prev_group_jobs = 0;
1379                 groupid++;
1380                 if (groupid == INT_MAX) {
1381                         log_err("fio: too many groups defined\n");
1382                         goto err;
1383                 }
1384         }
1385
1386         td->groupid = groupid;
1387         prev_group_jobs++;
1388
1389         if (setup_random_seeds(td)) {
1390                 td_verror(td, errno, "init_random_state");
1391                 goto err;
1392         }
1393
1394         if (setup_rate(td))
1395                 goto err;
1396
1397         if (o->lat_log_file) {
1398                 struct log_params p = {
1399                         .td = td,
1400                         .avg_msec = o->log_avg_msec,
1401                         .hist_msec = o->log_hist_msec,
1402                         .hist_coarseness = o->log_hist_coarseness,
1403                         .log_type = IO_LOG_TYPE_LAT,
1404                         .log_offset = o->log_offset,
1405                         .log_gz = o->log_gz,
1406                         .log_gz_store = o->log_gz_store,
1407                 };
1408                 const char *suf;
1409
1410                 if (p.log_gz_store)
1411                         suf = "log.fz";
1412                 else
1413                         suf = "log";
1414
1415                 gen_log_name(logname, sizeof(logname), "lat", o->lat_log_file,
1416                                 td->thread_number, suf, o->per_job_logs);
1417                 setup_log(&td->lat_log, &p, logname);
1418
1419                 gen_log_name(logname, sizeof(logname), "slat", o->lat_log_file,
1420                                 td->thread_number, suf, o->per_job_logs);
1421                 setup_log(&td->slat_log, &p, logname);
1422
1423                 gen_log_name(logname, sizeof(logname), "clat", o->lat_log_file,
1424                                 td->thread_number, suf, o->per_job_logs);
1425                 setup_log(&td->clat_log, &p, logname);
1426         }
1427
1428         if (o->hist_log_file) {
1429                 struct log_params p = {
1430                         .td = td,
1431                         .avg_msec = o->log_avg_msec,
1432                         .hist_msec = o->log_hist_msec,
1433                         .hist_coarseness = o->log_hist_coarseness,
1434                         .log_type = IO_LOG_TYPE_HIST,
1435                         .log_offset = o->log_offset,
1436                         .log_gz = o->log_gz,
1437                         .log_gz_store = o->log_gz_store,
1438                 };
1439                 const char *suf;
1440
1441 #ifndef CONFIG_ZLIB
1442                 if (td->client_type) {
1443                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1444                         goto err;
1445                 }
1446 #endif
1447
1448                 if (p.log_gz_store)
1449                         suf = "log.fz";
1450                 else
1451                         suf = "log";
1452
1453                 gen_log_name(logname, sizeof(logname), "clat_hist", o->hist_log_file,
1454                                 td->thread_number, suf, o->per_job_logs);
1455                 setup_log(&td->clat_hist_log, &p, logname);
1456         }
1457
1458         if (o->bw_log_file) {
1459                 struct log_params p = {
1460                         .td = td,
1461                         .avg_msec = o->log_avg_msec,
1462                         .hist_msec = o->log_hist_msec,
1463                         .hist_coarseness = o->log_hist_coarseness,
1464                         .log_type = IO_LOG_TYPE_BW,
1465                         .log_offset = o->log_offset,
1466                         .log_gz = o->log_gz,
1467                         .log_gz_store = o->log_gz_store,
1468                 };
1469                 const char *suf;
1470
1471                 if (fio_option_is_set(o, bw_avg_time))
1472                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1473                 else
1474                         o->bw_avg_time = p.avg_msec;
1475         
1476                 p.hist_msec = o->log_hist_msec;
1477                 p.hist_coarseness = o->log_hist_coarseness;
1478
1479                 if (p.log_gz_store)
1480                         suf = "log.fz";
1481                 else
1482                         suf = "log";
1483
1484                 gen_log_name(logname, sizeof(logname), "bw", o->bw_log_file,
1485                                 td->thread_number, suf, o->per_job_logs);
1486                 setup_log(&td->bw_log, &p, logname);
1487         }
1488         if (o->iops_log_file) {
1489                 struct log_params p = {
1490                         .td = td,
1491                         .avg_msec = o->log_avg_msec,
1492                         .hist_msec = o->log_hist_msec,
1493                         .hist_coarseness = o->log_hist_coarseness,
1494                         .log_type = IO_LOG_TYPE_IOPS,
1495                         .log_offset = o->log_offset,
1496                         .log_gz = o->log_gz,
1497                         .log_gz_store = o->log_gz_store,
1498                 };
1499                 const char *suf;
1500
1501                 if (fio_option_is_set(o, iops_avg_time))
1502                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1503                 else
1504                         o->iops_avg_time = p.avg_msec;
1505         
1506                 p.hist_msec = o->log_hist_msec;
1507                 p.hist_coarseness = o->log_hist_coarseness;
1508
1509                 if (p.log_gz_store)
1510                         suf = "log.fz";
1511                 else
1512                         suf = "log";
1513
1514                 gen_log_name(logname, sizeof(logname), "iops", o->iops_log_file,
1515                                 td->thread_number, suf, o->per_job_logs);
1516                 setup_log(&td->iops_log, &p, logname);
1517         }
1518
1519         if (!o->name)
1520                 o->name = strdup(jobname);
1521
1522         if (output_format & FIO_OUTPUT_NORMAL) {
1523                 if (!job_add_num) {
1524                         if (is_backend && !recursed)
1525                                 fio_server_send_add_job(td);
1526
1527                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1528                                 char *c1, *c2, *c3, *c4;
1529                                 char *c5 = NULL, *c6 = NULL;
1530
1531                                 c1 = fio_uint_to_kmg(o->min_bs[DDIR_READ]);
1532                                 c2 = fio_uint_to_kmg(o->max_bs[DDIR_READ]);
1533                                 c3 = fio_uint_to_kmg(o->min_bs[DDIR_WRITE]);
1534                                 c4 = fio_uint_to_kmg(o->max_bs[DDIR_WRITE]);
1535
1536                                 if (!o->bs_is_seq_rand) {
1537                                         c5 = fio_uint_to_kmg(o->min_bs[DDIR_TRIM]);
1538                                         c6 = fio_uint_to_kmg(o->max_bs[DDIR_TRIM]);
1539                                 }
1540
1541                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1542                                                         td->groupid,
1543                                                         ddir_str(o->td_ddir));
1544
1545                                 if (o->bs_is_seq_rand)
1546                                         log_info("bs(seq/rand)=%s-%s/%s-%s, ",
1547                                                         c1, c2, c3, c4);
1548                                 else
1549                                         log_info("bs=%s-%s/%s-%s/%s-%s, ",
1550                                                         c1, c2, c3, c4, c5, c6);
1551
1552                                 log_info("ioengine=%s, iodepth=%u\n",
1553                                                 td->io_ops->name, o->iodepth);
1554
1555                                 free(c1);
1556                                 free(c2);
1557                                 free(c3);
1558                                 free(c4);
1559                                 free(c5);
1560                                 free(c6);
1561                         }
1562                 } else if (job_add_num == 1)
1563                         log_info("...\n");
1564         }
1565
1566         /*
1567          * recurse add identical jobs, clear numjobs and stonewall options
1568          * as they don't apply to sub-jobs
1569          */
1570         numjobs = o->numjobs;
1571         while (--numjobs) {
1572                 struct thread_data *td_new = get_new_job(0, td, 1, jobname);
1573
1574                 if (!td_new)
1575                         goto err;
1576
1577                 td_new->o.numjobs = 1;
1578                 td_new->o.stonewall = 0;
1579                 td_new->o.new_group = 0;
1580                 td_new->subjob_number = numjobs;
1581
1582                 if (file_alloced) {
1583                         if (td_new->files) {
1584                                 struct fio_file *f;
1585                                 for_each_file(td_new, f, i) {
1586                                         if (f->file_name)
1587                                                 sfree(f->file_name);
1588                                         sfree(f);
1589                                 }
1590                                 free(td_new->files);
1591                                 td_new->files = NULL;
1592                         }
1593                         td_new->files_index = 0;
1594                         td_new->files_size = 0;
1595                         if (td_new->o.filename) {
1596                                 free(td_new->o.filename);
1597                                 td_new->o.filename = NULL;
1598                         }
1599                 }
1600
1601                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1602                         goto err;
1603         }
1604
1605         return 0;
1606 err:
1607         put_job(td);
1608         return -1;
1609 }
1610
1611 /*
1612  * Parse as if 'o' was a command line
1613  */
1614 void add_job_opts(const char **o, int client_type)
1615 {
1616         struct thread_data *td, *td_parent;
1617         int i, in_global = 1;
1618         char jobname[32];
1619
1620         i = 0;
1621         td_parent = td = NULL;
1622         while (o[i]) {
1623                 if (!strncmp(o[i], "name", 4)) {
1624                         in_global = 0;
1625                         if (td)
1626                                 add_job(td, jobname, 0, 0, client_type);
1627                         td = NULL;
1628                         sprintf(jobname, "%s", o[i] + 5);
1629                 }
1630                 if (in_global && !td_parent)
1631                         td_parent = get_new_job(1, &def_thread, 0, jobname);
1632                 else if (!in_global && !td) {
1633                         if (!td_parent)
1634                                 td_parent = &def_thread;
1635                         td = get_new_job(0, td_parent, 0, jobname);
1636                 }
1637                 if (in_global)
1638                         fio_options_parse(td_parent, (char **) &o[i], 1);
1639                 else
1640                         fio_options_parse(td, (char **) &o[i], 1);
1641                 i++;
1642         }
1643
1644         if (td)
1645                 add_job(td, jobname, 0, 0, client_type);
1646 }
1647
1648 static int skip_this_section(const char *name)
1649 {
1650         int i;
1651
1652         if (!nr_job_sections)
1653                 return 0;
1654         if (!strncmp(name, "global", 6))
1655                 return 0;
1656
1657         for (i = 0; i < nr_job_sections; i++)
1658                 if (!strcmp(job_sections[i], name))
1659                         return 0;
1660
1661         return 1;
1662 }
1663
1664 static int is_empty_or_comment(char *line)
1665 {
1666         unsigned int i;
1667
1668         for (i = 0; i < strlen(line); i++) {
1669                 if (line[i] == ';')
1670                         return 1;
1671                 if (line[i] == '#')
1672                         return 1;
1673                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1674                         return 0;
1675         }
1676
1677         return 1;
1678 }
1679
1680 /*
1681  * This is our [ini] type file parser.
1682  */
1683 int __parse_jobs_ini(struct thread_data *td,
1684                 char *file, int is_buf, int stonewall_flag, int type,
1685                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1686 {
1687         unsigned int global = 0;
1688         char *string;
1689         FILE *f;
1690         char *p;
1691         int ret = 0, stonewall;
1692         int first_sect = 1;
1693         int skip_fgets = 0;
1694         int inside_skip = 0;
1695         char **opts;
1696         int i, alloc_opts, num_opts;
1697
1698         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1699         assert(td || !nested);
1700
1701         if (is_buf)
1702                 f = NULL;
1703         else {
1704                 if (!strcmp(file, "-"))
1705                         f = stdin;
1706                 else
1707                         f = fopen(file, "r");
1708
1709                 if (!f) {
1710                         int __err = errno;
1711
1712                         log_err("fio: unable to open '%s' job file\n", file);
1713                         if (td)
1714                                 td_verror(td, __err, "job file open");
1715                         return 1;
1716                 }
1717         }
1718
1719         string = malloc(4096);
1720
1721         /*
1722          * it's really 256 + small bit, 280 should suffice
1723          */
1724         if (!nested) {
1725                 name = malloc(280);
1726                 memset(name, 0, 280);
1727         }
1728
1729         opts = NULL;
1730         if (nested && popts) {
1731                 opts = *popts;
1732                 alloc_opts = *aopts;
1733                 num_opts = *nopts;
1734         }
1735
1736         if (!opts) {
1737                 alloc_opts = 8;
1738                 opts = malloc(sizeof(char *) * alloc_opts);
1739                 num_opts = 0;
1740         }
1741
1742         stonewall = stonewall_flag;
1743         do {
1744                 /*
1745                  * if skip_fgets is set, we already have loaded a line we
1746                  * haven't handled.
1747                  */
1748                 if (!skip_fgets) {
1749                         if (is_buf)
1750                                 p = strsep(&file, "\n");
1751                         else
1752                                 p = fgets(string, 4096, f);
1753                         if (!p)
1754                                 break;
1755                 }
1756
1757                 skip_fgets = 0;
1758                 strip_blank_front(&p);
1759                 strip_blank_end(p);
1760
1761                 dprint(FD_PARSE, "%s\n", p);
1762                 if (is_empty_or_comment(p))
1763                         continue;
1764
1765                 if (!nested) {
1766                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1767                                 if (inside_skip)
1768                                         continue;
1769
1770                                 log_err("fio: option <%s> outside of "
1771                                         "[] job section\n", p);
1772                                 ret = 1;
1773                                 break;
1774                         }
1775
1776                         name[strlen(name) - 1] = '\0';
1777
1778                         if (skip_this_section(name)) {
1779                                 inside_skip = 1;
1780                                 continue;
1781                         } else
1782                                 inside_skip = 0;
1783
1784                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1785
1786                         global = !strncmp(name, "global", 6);
1787
1788                         if (dump_cmdline) {
1789                                 if (first_sect)
1790                                         log_info("fio ");
1791                                 if (!global)
1792                                         log_info("--name=%s ", name);
1793                                 first_sect = 0;
1794                         }
1795
1796                         td = get_new_job(global, &def_thread, 0, name);
1797                         if (!td) {
1798                                 ret = 1;
1799                                 break;
1800                         }
1801
1802                         /*
1803                          * Separate multiple job files by a stonewall
1804                          */
1805                         if (!global && stonewall) {
1806                                 td->o.stonewall = stonewall;
1807                                 stonewall = 0;
1808                         }
1809
1810                         num_opts = 0;
1811                         memset(opts, 0, alloc_opts * sizeof(char *));
1812                 }
1813                 else
1814                         skip_fgets = 1;
1815
1816                 while (1) {
1817                         if (!skip_fgets) {
1818                                 if (is_buf)
1819                                         p = strsep(&file, "\n");
1820                                 else
1821                                         p = fgets(string, 4096, f);
1822                                 if (!p)
1823                                         break;
1824                                 dprint(FD_PARSE, "%s", p);
1825                         }
1826                         else
1827                                 skip_fgets = 0;
1828
1829                         if (is_empty_or_comment(p))
1830                                 continue;
1831
1832                         strip_blank_front(&p);
1833
1834                         /*
1835                          * new section, break out and make sure we don't
1836                          * fgets() a new line at the top.
1837                          */
1838                         if (p[0] == '[') {
1839                                 if (nested) {
1840                                         log_err("No new sections in included files\n");
1841                                         return 1;
1842                                 }
1843
1844                                 skip_fgets = 1;
1845                                 break;
1846                         }
1847
1848                         strip_blank_end(p);
1849
1850                         if (!strncmp(p, "include", strlen("include"))) {
1851                                 char *filename = p + strlen("include") + 1,
1852                                         *ts, *full_fn = NULL;
1853
1854                                 /*
1855                                  * Allow for the include filename
1856                                  * specification to be relative.
1857                                  */
1858                                 if (access(filename, F_OK) &&
1859                                     (ts = strrchr(file, '/'))) {
1860                                         int len = ts - file +
1861                                                 strlen(filename) + 2;
1862
1863                                         if (!(full_fn = calloc(1, len))) {
1864                                                 ret = ENOMEM;
1865                                                 break;
1866                                         }
1867
1868                                         strncpy(full_fn,
1869                                                 file, (ts - file) + 1);
1870                                         strncpy(full_fn + (ts - file) + 1,
1871                                                 filename, strlen(filename));
1872                                         full_fn[len - 1] = 0;
1873                                         filename = full_fn;
1874                                 }
1875
1876                                 ret = __parse_jobs_ini(td, filename, is_buf,
1877                                                        stonewall_flag, type, 1,
1878                                                        name, &opts,
1879                                                        &alloc_opts, &num_opts);
1880
1881                                 if (ret) {
1882                                         log_err("Error %d while parsing "
1883                                                 "include file %s\n",
1884                                                 ret, filename);
1885                                 }
1886
1887                                 if (full_fn)
1888                                         free(full_fn);
1889
1890                                 if (ret)
1891                                         break;
1892
1893                                 continue;
1894                         }
1895
1896                         if (num_opts == alloc_opts) {
1897                                 alloc_opts <<= 1;
1898                                 opts = realloc(opts,
1899                                                 alloc_opts * sizeof(char *));
1900                         }
1901
1902                         opts[num_opts] = strdup(p);
1903                         num_opts++;
1904                 }
1905
1906                 if (nested) {
1907                         *popts = opts;
1908                         *aopts = alloc_opts;
1909                         *nopts = num_opts;
1910                         goto out;
1911                 }
1912
1913                 ret = fio_options_parse(td, opts, num_opts);
1914                 if (!ret) {
1915                         if (dump_cmdline)
1916                                 dump_opt_list(td);
1917
1918                         ret = add_job(td, name, 0, 0, type);
1919                 } else {
1920                         log_err("fio: job %s dropped\n", name);
1921                         put_job(td);
1922                 }
1923
1924                 for (i = 0; i < num_opts; i++)
1925                         free(opts[i]);
1926                 num_opts = 0;
1927         } while (!ret);
1928
1929         if (dump_cmdline)
1930                 log_info("\n");
1931
1932         i = 0;
1933         while (i < nr_job_sections) {
1934                 free(job_sections[i]);
1935                 i++;
1936         }
1937
1938         free(opts);
1939 out:
1940         free(string);
1941         if (!nested)
1942                 free(name);
1943         if (!is_buf && f != stdin)
1944                 fclose(f);
1945         return ret;
1946 }
1947
1948 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1949 {
1950         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
1951                         0, NULL, NULL, NULL, NULL);
1952 }
1953
1954 static int fill_def_thread(void)
1955 {
1956         memset(&def_thread, 0, sizeof(def_thread));
1957         INIT_FLIST_HEAD(&def_thread.opt_list);
1958
1959         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1960         def_thread.o.error_dump = 1;
1961
1962         /*
1963          * fill default options
1964          */
1965         fio_fill_default_options(&def_thread);
1966         return 0;
1967 }
1968
1969 static void show_debug_categories(void)
1970 {
1971 #ifdef FIO_INC_DEBUG
1972         struct debug_level *dl = &debug_levels[0];
1973         int curlen, first = 1;
1974
1975         curlen = 0;
1976         while (dl->name) {
1977                 int has_next = (dl + 1)->name != NULL;
1978
1979                 if (first || curlen + strlen(dl->name) >= 80) {
1980                         if (!first) {
1981                                 printf("\n");
1982                                 curlen = 0;
1983                         }
1984                         curlen += printf("\t\t\t%s", dl->name);
1985                         curlen += 3 * (8 - 1);
1986                         if (has_next)
1987                                 curlen += printf(",");
1988                 } else {
1989                         curlen += printf("%s", dl->name);
1990                         if (has_next)
1991                                 curlen += printf(",");
1992                 }
1993                 dl++;
1994                 first = 0;
1995         }
1996         printf("\n");
1997 #endif
1998 }
1999
2000 static void usage(const char *name)
2001 {
2002         printf("%s\n", fio_version_string);
2003         printf("%s [options] [job options] <job file(s)>\n", name);
2004         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2005         show_debug_categories();
2006         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2007         printf("  --output\t\tWrite output to file\n");
2008         printf("  --runtime\t\tRuntime in seconds\n");
2009         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
2010         printf("  --minimal\t\tMinimal (terse) output\n");
2011         printf("  --output-format=x\tOutput format (terse,json,json+,normal)\n");
2012         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
2013         printf("  --version\t\tPrint version info and exit\n");
2014         printf("  --help\t\tPrint this page\n");
2015         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2016         printf("  --crctest\t\tTest speed of checksum functions\n");
2017         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2018                 " them\n");
2019         printf("  --enghelp=engine\tPrint ioengine help, or list"
2020                 " available ioengines\n");
2021         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2022                 " cmd\n");
2023         printf("  --showcmd\t\tTurn a job file into command line options\n");
2024         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2025         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2026         printf("  --eta-newline=time\tForce a new line for every 'time'");
2027         printf(" period passed\n");
2028         printf("  --status-interval=t\tForce full status dump every");
2029         printf(" 't' period passed\n");
2030         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2031                 " writes\n");
2032         printf("  --section=name\tOnly run specified section in job file\n");
2033         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2034                 " (def 1024)\n");
2035         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2036         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2037         printf("  --server=args\t\tStart a backend fio server\n");
2038         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2039         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
2040         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2041         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2042                 "\t\t\t(option=system,percpu) or run unit work\n"
2043                 "\t\t\tcalibration only (option=calibrate)\n");
2044 #ifdef CONFIG_ZLIB
2045         printf("  --inflate-log=log\tInflate and output compressed log\n");
2046 #endif
2047         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2048         printf("  --trigger-timeout=t\tExecute trigger af this time\n");
2049         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2050         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2051         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2052         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
2053         printf("\n                   Jens Axboe <jaxboe@fusionio.com>");
2054         printf("\n                   Jens Axboe <axboe@fb.com>\n");
2055 }
2056
2057 #ifdef FIO_INC_DEBUG
2058 struct debug_level debug_levels[] = {
2059         { .name = "process",
2060           .help = "Process creation/exit logging",
2061           .shift = FD_PROCESS,
2062         },
2063         { .name = "file",
2064           .help = "File related action logging",
2065           .shift = FD_FILE,
2066         },
2067         { .name = "io",
2068           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2069           .shift = FD_IO,
2070         },
2071         { .name = "mem",
2072           .help = "Memory allocation/freeing logging",
2073           .shift = FD_MEM,
2074         },
2075         { .name = "blktrace",
2076           .help = "blktrace action logging",
2077           .shift = FD_BLKTRACE,
2078         },
2079         { .name = "verify",
2080           .help = "IO verification action logging",
2081           .shift = FD_VERIFY,
2082         },
2083         { .name = "random",
2084           .help = "Random generation logging",
2085           .shift = FD_RANDOM,
2086         },
2087         { .name = "parse",
2088           .help = "Parser logging",
2089           .shift = FD_PARSE,
2090         },
2091         { .name = "diskutil",
2092           .help = "Disk utility logging actions",
2093           .shift = FD_DISKUTIL,
2094         },
2095         { .name = "job",
2096           .help = "Logging related to creating/destroying jobs",
2097           .shift = FD_JOB,
2098         },
2099         { .name = "mutex",
2100           .help = "Mutex logging",
2101           .shift = FD_MUTEX
2102         },
2103         { .name = "profile",
2104           .help = "Logging related to profiles",
2105           .shift = FD_PROFILE,
2106         },
2107         { .name = "time",
2108           .help = "Logging related to time keeping functions",
2109           .shift = FD_TIME,
2110         },
2111         { .name = "net",
2112           .help = "Network logging",
2113           .shift = FD_NET,
2114         },
2115         { .name = "rate",
2116           .help = "Rate logging",
2117           .shift = FD_RATE,
2118         },
2119         { .name = "compress",
2120           .help = "Log compression logging",
2121           .shift = FD_COMPRESS,
2122         },
2123         { .name = NULL, },
2124 };
2125
2126 static int set_debug(const char *string)
2127 {
2128         struct debug_level *dl;
2129         char *p = (char *) string;
2130         char *opt;
2131         int i;
2132
2133         if (!string)
2134                 return 0;
2135
2136         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2137                 log_info("fio: dumping debug options:");
2138                 for (i = 0; debug_levels[i].name; i++) {
2139                         dl = &debug_levels[i];
2140                         log_info("%s,", dl->name);
2141                 }
2142                 log_info("all\n");
2143                 return 1;
2144         }
2145
2146         while ((opt = strsep(&p, ",")) != NULL) {
2147                 int found = 0;
2148
2149                 if (!strncmp(opt, "all", 3)) {
2150                         log_info("fio: set all debug options\n");
2151                         fio_debug = ~0UL;
2152                         continue;
2153                 }
2154
2155                 for (i = 0; debug_levels[i].name; i++) {
2156                         dl = &debug_levels[i];
2157                         found = !strncmp(opt, dl->name, strlen(dl->name));
2158                         if (!found)
2159                                 continue;
2160
2161                         if (dl->shift == FD_JOB) {
2162                                 opt = strchr(opt, ':');
2163                                 if (!opt) {
2164                                         log_err("fio: missing job number\n");
2165                                         break;
2166                                 }
2167                                 opt++;
2168                                 fio_debug_jobno = atoi(opt);
2169                                 log_info("fio: set debug jobno %d\n",
2170                                                         fio_debug_jobno);
2171                         } else {
2172                                 log_info("fio: set debug option %s\n", opt);
2173                                 fio_debug |= (1UL << dl->shift);
2174                         }
2175                         break;
2176                 }
2177
2178                 if (!found)
2179                         log_err("fio: debug mask %s not found\n", opt);
2180         }
2181         return 0;
2182 }
2183 #else
2184 static int set_debug(const char *string)
2185 {
2186         log_err("fio: debug tracing not included in build\n");
2187         return 1;
2188 }
2189 #endif
2190
2191 static void fio_options_fill_optstring(void)
2192 {
2193         char *ostr = cmd_optstr;
2194         int i, c;
2195
2196         c = i = 0;
2197         while (l_opts[i].name) {
2198                 ostr[c++] = l_opts[i].val;
2199                 if (l_opts[i].has_arg == required_argument)
2200                         ostr[c++] = ':';
2201                 else if (l_opts[i].has_arg == optional_argument) {
2202                         ostr[c++] = ':';
2203                         ostr[c++] = ':';
2204                 }
2205                 i++;
2206         }
2207         ostr[c] = '\0';
2208 }
2209
2210 static int client_flag_set(char c)
2211 {
2212         int i;
2213
2214         i = 0;
2215         while (l_opts[i].name) {
2216                 int val = l_opts[i].val;
2217
2218                 if (c == (val & 0xff))
2219                         return (val & FIO_CLIENT_FLAG);
2220
2221                 i++;
2222         }
2223
2224         return 0;
2225 }
2226
2227 static void parse_cmd_client(void *client, char *opt)
2228 {
2229         fio_client_add_cmd_option(client, opt);
2230 }
2231
2232 static void show_closest_option(const char *name)
2233 {
2234         int best_option, best_distance;
2235         int i, distance;
2236
2237         while (*name == '-')
2238                 name++;
2239
2240         best_option = -1;
2241         best_distance = INT_MAX;
2242         i = 0;
2243         while (l_opts[i].name) {
2244                 distance = string_distance(name, l_opts[i].name);
2245                 if (distance < best_distance) {
2246                         best_distance = distance;
2247                         best_option = i;
2248                 }
2249                 i++;
2250         }
2251
2252         if (best_option != -1 && string_distance_ok(name, best_distance))
2253                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2254 }
2255
2256 static int parse_output_format(const char *optarg)
2257 {
2258         char *p, *orig, *opt;
2259         int ret = 0;
2260
2261         p = orig = strdup(optarg);
2262
2263         output_format = 0;
2264
2265         while ((opt = strsep(&p, ",")) != NULL) {
2266                 if (!strcmp(opt, "minimal") ||
2267                     !strcmp(opt, "terse") ||
2268                     !strcmp(opt, "csv"))
2269                         output_format |= FIO_OUTPUT_TERSE;
2270                 else if (!strcmp(opt, "json"))
2271                         output_format |= FIO_OUTPUT_JSON;
2272                 else if (!strcmp(opt, "json+"))
2273                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2274                 else if (!strcmp(opt, "normal"))
2275                         output_format |= FIO_OUTPUT_NORMAL;
2276                 else {
2277                         log_err("fio: invalid output format %s\n", opt);
2278                         ret = 1;
2279                         break;
2280                 }
2281         }
2282
2283         free(orig);
2284         return ret;
2285 }
2286
2287 int parse_cmd_line(int argc, char *argv[], int client_type)
2288 {
2289         struct thread_data *td = NULL;
2290         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2291         char *ostr = cmd_optstr;
2292         char *pid_file = NULL;
2293         void *cur_client = NULL;
2294         int backend = 0;
2295
2296         /*
2297          * Reset optind handling, since we may call this multiple times
2298          * for the backend.
2299          */
2300         optind = 1;
2301
2302         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2303                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2304                         parse_cmd_client(cur_client, argv[optind - 1]);
2305                         c &= ~FIO_CLIENT_FLAG;
2306                 }
2307
2308                 switch (c) {
2309                 case 'a':
2310                         smalloc_pool_size = atoi(optarg);
2311                         break;
2312                 case 't':
2313                         if (check_str_time(optarg, &def_timeout, 1)) {
2314                                 log_err("fio: failed parsing time %s\n", optarg);
2315                                 do_exit++;
2316                                 exit_val = 1;
2317                         }
2318                         break;
2319                 case 'l':
2320                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2321                         do_exit++;
2322                         exit_val = 1;
2323                         break;
2324                 case 'b':
2325                         write_bw_log = 1;
2326                         break;
2327                 case 'o':
2328                         if (f_out && f_out != stdout)
2329                                 fclose(f_out);
2330
2331                         f_out = fopen(optarg, "w+");
2332                         if (!f_out) {
2333                                 perror("fopen output");
2334                                 exit(1);
2335                         }
2336                         f_err = f_out;
2337                         break;
2338                 case 'm':
2339                         output_format = FIO_OUTPUT_TERSE;
2340                         break;
2341                 case 'F':
2342                         if (parse_output_format(optarg)) {
2343                                 log_err("fio: failed parsing output-format\n");
2344                                 exit_val = 1;
2345                                 do_exit++;
2346                                 break;
2347                         }
2348                         break;
2349                 case 'f':
2350                         output_format |= FIO_OUTPUT_TERSE;
2351                         break;
2352                 case 'h':
2353                         did_arg = 1;
2354                         if (!cur_client) {
2355                                 usage(argv[0]);
2356                                 do_exit++;
2357                         }
2358                         break;
2359                 case 'c':
2360                         did_arg = 1;
2361                         if (!cur_client) {
2362                                 fio_show_option_help(optarg);
2363                                 do_exit++;
2364                         }
2365                         break;
2366                 case 'i':
2367                         did_arg = 1;
2368                         if (!cur_client) {
2369                                 fio_show_ioengine_help(optarg);
2370                                 do_exit++;
2371                         }
2372                         break;
2373                 case 's':
2374                         did_arg = 1;
2375                         dump_cmdline = 1;
2376                         break;
2377                 case 'r':
2378                         read_only = 1;
2379                         break;
2380                 case 'v':
2381                         did_arg = 1;
2382                         if (!cur_client) {
2383                                 log_info("%s\n", fio_version_string);
2384                                 do_exit++;
2385                         }
2386                         break;
2387                 case 'V':
2388                         terse_version = atoi(optarg);
2389                         if (!(terse_version == 2 || terse_version == 3 ||
2390                              terse_version == 4)) {
2391                                 log_err("fio: bad terse version format\n");
2392                                 exit_val = 1;
2393                                 do_exit++;
2394                         }
2395                         break;
2396                 case 'e':
2397                         if (!strcmp("always", optarg))
2398                                 eta_print = FIO_ETA_ALWAYS;
2399                         else if (!strcmp("never", optarg))
2400                                 eta_print = FIO_ETA_NEVER;
2401                         break;
2402                 case 'E': {
2403                         long long t = 0;
2404
2405                         if (check_str_time(optarg, &t, 1)) {
2406                                 log_err("fio: failed parsing eta time %s\n", optarg);
2407                                 exit_val = 1;
2408                                 do_exit++;
2409                         }
2410                         eta_new_line = t / 1000;
2411                         break;
2412                         }
2413                 case 'd':
2414                         if (set_debug(optarg))
2415                                 do_exit++;
2416                         break;
2417                 case 'P':
2418                         did_arg = 1;
2419                         parse_only = 1;
2420                         break;
2421                 case 'x': {
2422                         size_t new_size;
2423
2424                         if (!strcmp(optarg, "global")) {
2425                                 log_err("fio: can't use global as only "
2426                                         "section\n");
2427                                 do_exit++;
2428                                 exit_val = 1;
2429                                 break;
2430                         }
2431                         new_size = (nr_job_sections + 1) * sizeof(char *);
2432                         job_sections = realloc(job_sections, new_size);
2433                         job_sections[nr_job_sections] = strdup(optarg);
2434                         nr_job_sections++;
2435                         break;
2436                         }
2437 #ifdef CONFIG_ZLIB
2438                 case 'X':
2439                         exit_val = iolog_file_inflate(optarg);
2440                         did_arg++;
2441                         do_exit++;
2442                         break;
2443 #endif
2444                 case 'p':
2445                         did_arg = 1;
2446                         if (exec_profile)
2447                                 free(exec_profile);
2448                         exec_profile = strdup(optarg);
2449                         break;
2450                 case FIO_GETOPT_JOB: {
2451                         const char *opt = l_opts[lidx].name;
2452                         char *val = optarg;
2453
2454                         if (!strncmp(opt, "name", 4) && td) {
2455                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2456                                 if (ret)
2457                                         goto out_free;
2458                                 td = NULL;
2459                                 did_arg = 1;
2460                         }
2461                         if (!td) {
2462                                 int is_section = !strncmp(opt, "name", 4);
2463                                 int global = 0;
2464
2465                                 if (!is_section || !strncmp(val, "global", 6))
2466                                         global = 1;
2467
2468                                 if (is_section && skip_this_section(val))
2469                                         continue;
2470
2471                                 td = get_new_job(global, &def_thread, 1, NULL);
2472                                 if (!td || ioengine_load(td)) {
2473                                         if (td) {
2474                                                 put_job(td);
2475                                                 td = NULL;
2476                                         }
2477                                         do_exit++;
2478                                         exit_val = 1;
2479                                         break;
2480                                 }
2481                                 fio_options_set_ioengine_opts(l_opts, td);
2482                         }
2483
2484                         if ((!val || !strlen(val)) &&
2485                             l_opts[lidx].has_arg == required_argument) {
2486                                 log_err("fio: option %s requires an argument\n", opt);
2487                                 ret = 1;
2488                         } else
2489                                 ret = fio_cmd_option_parse(td, opt, val);
2490
2491                         if (ret) {
2492                                 if (td) {
2493                                         put_job(td);
2494                                         td = NULL;
2495                                 }
2496                                 do_exit++;
2497                                 exit_val = 1;
2498                         }
2499
2500                         if (!ret && !strcmp(opt, "ioengine")) {
2501                                 free_ioengine(td);
2502                                 if (ioengine_load(td)) {
2503                                         put_job(td);
2504                                         td = NULL;
2505                                         do_exit++;
2506                                         exit_val = 1;
2507                                         break;
2508                                 }
2509                                 fio_options_set_ioengine_opts(l_opts, td);
2510                         }
2511                         break;
2512                 }
2513                 case FIO_GETOPT_IOENGINE: {
2514                         const char *opt = l_opts[lidx].name;
2515                         char *val = optarg;
2516
2517                         if (!td)
2518                                 break;
2519
2520                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2521                         break;
2522                 }
2523                 case 'w':
2524                         warnings_fatal = 1;
2525                         break;
2526                 case 'j':
2527                         max_jobs = atoi(optarg);
2528                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2529                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2530                                 do_exit++;
2531                                 exit_val = 1;
2532                         }
2533                         break;
2534                 case 'S':
2535                         did_arg = 1;
2536 #ifndef CONFIG_NO_SHM
2537                         if (nr_clients) {
2538                                 log_err("fio: can't be both client and server\n");
2539                                 do_exit++;
2540                                 exit_val = 1;
2541                                 break;
2542                         }
2543                         if (optarg)
2544                                 fio_server_set_arg(optarg);
2545                         is_backend = 1;
2546                         backend = 1;
2547 #else
2548                         log_err("fio: client/server requires SHM support\n");
2549                         do_exit++;
2550                         exit_val = 1;
2551 #endif
2552                         break;
2553                 case 'D':
2554                         if (pid_file)
2555                                 free(pid_file);
2556                         pid_file = strdup(optarg);
2557                         break;
2558                 case 'I':
2559                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2560                                 /* exit on error and calibration only */
2561                                 did_arg = 1;
2562                                 do_exit++;
2563                                 if (ret == -1)
2564                                         exit_val = 1;
2565                         }
2566                         break;
2567                 case 'C':
2568                         did_arg = 1;
2569                         if (is_backend) {
2570                                 log_err("fio: can't be both client and server\n");
2571                                 do_exit++;
2572                                 exit_val = 1;
2573                                 break;
2574                         }
2575                         /* if --client parameter contains a pathname */
2576                         if (0 == access(optarg, R_OK)) {
2577                                 /* file contains a list of host addrs or names */
2578                                 char hostaddr[PATH_MAX] = {0};
2579                                 char formatstr[8];
2580                                 FILE * hostf = fopen(optarg, "r");
2581                                 if (!hostf) {
2582                                         log_err("fio: could not open client list file %s for read\n", optarg);
2583                                         do_exit++;
2584                                         exit_val = 1;
2585                                         break;
2586                                 }
2587                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2588                                 /*
2589                                  * read at most PATH_MAX-1 chars from each
2590                                  * record in this file
2591                                  */
2592                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2593                                         /* expect EVERY host in file to be valid */
2594                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2595                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2596                                                 do_exit++;
2597                                                 exit_val = 1;
2598                                                 break;
2599                                         }
2600                                 }
2601                                 fclose(hostf);
2602                                 break; /* no possibility of job file for "this client only" */
2603                         }
2604                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2605                                 log_err("fio: failed adding client %s\n", optarg);
2606                                 do_exit++;
2607                                 exit_val = 1;
2608                                 break;
2609                         }
2610                         /*
2611                          * If the next argument exists and isn't an option,
2612                          * assume it's a job file for this client only.
2613                          */
2614                         while (optind < argc) {
2615                                 if (!strncmp(argv[optind], "--", 2) ||
2616                                     !strncmp(argv[optind], "-", 1))
2617                                         break;
2618
2619                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2620                                         break;
2621                                 optind++;
2622                         }
2623                         break;
2624                 case 'R':
2625                         did_arg = 1;
2626                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2627                                 do_exit++;
2628                                 exit_val = 1;
2629                         }
2630                         break;
2631                 case 'T':
2632                         did_arg = 1;
2633                         do_exit++;
2634                         exit_val = fio_monotonic_clocktest(1);
2635                         break;
2636                 case 'G':
2637                         did_arg = 1;
2638                         do_exit++;
2639                         exit_val = fio_crctest(optarg);
2640                         break;
2641                 case 'L': {
2642                         long long val;
2643
2644                         if (check_str_time(optarg, &val, 1)) {
2645                                 log_err("fio: failed parsing time %s\n", optarg);
2646                                 do_exit++;
2647                                 exit_val = 1;
2648                                 break;
2649                         }
2650                         status_interval = val / 1000;
2651                         break;
2652                         }
2653                 case 'W':
2654                         if (trigger_file)
2655                                 free(trigger_file);
2656                         trigger_file = strdup(optarg);
2657                         break;
2658                 case 'H':
2659                         if (trigger_cmd)
2660                                 free(trigger_cmd);
2661                         trigger_cmd = strdup(optarg);
2662                         break;
2663                 case 'J':
2664                         if (trigger_remote_cmd)
2665                                 free(trigger_remote_cmd);
2666                         trigger_remote_cmd = strdup(optarg);
2667                         break;
2668                 case 'K':
2669                         if (aux_path)
2670                                 free(aux_path);
2671                         aux_path = strdup(optarg);
2672                         break;
2673                 case 'B':
2674                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2675                                 log_err("fio: failed parsing time %s\n", optarg);
2676                                 do_exit++;
2677                                 exit_val = 1;
2678                         }
2679                         trigger_timeout /= 1000000;
2680                         break;
2681                 case '?':
2682                         log_err("%s: unrecognized option '%s'\n", argv[0],
2683                                                         argv[optind - 1]);
2684                         show_closest_option(argv[optind - 1]);
2685                 default:
2686                         do_exit++;
2687                         exit_val = 1;
2688                         break;
2689                 }
2690                 if (do_exit)
2691                         break;
2692         }
2693
2694         if (do_exit && !(is_backend || nr_clients))
2695                 exit(exit_val);
2696
2697         if (nr_clients && fio_clients_connect())
2698                 exit(1);
2699
2700         if (is_backend && backend)
2701                 return fio_start_server(pid_file);
2702         else if (pid_file)
2703                 free(pid_file);
2704
2705         if (td) {
2706                 if (!ret) {
2707                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2708                         if (ret)
2709                                 did_arg = 1;
2710                 }
2711         }
2712
2713         while (!ret && optind < argc) {
2714                 ini_idx++;
2715                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2716                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2717                 optind++;
2718         }
2719
2720 out_free:
2721         if (pid_file)
2722                 free(pid_file);
2723
2724         return ini_idx;
2725 }
2726
2727 int fio_init_options(void)
2728 {
2729         f_out = stdout;
2730         f_err = stderr;
2731
2732         fio_options_fill_optstring();
2733         fio_options_dup_and_init(l_opts);
2734
2735         atexit(free_shm);
2736
2737         if (fill_def_thread())
2738                 return 1;
2739
2740         return 0;
2741 }
2742
2743 extern int fio_check_options(struct thread_options *);
2744
2745 int parse_options(int argc, char *argv[])
2746 {
2747         const int type = FIO_CLIENT_TYPE_CLI;
2748         int job_files, i;
2749
2750         if (fio_init_options())
2751                 return 1;
2752         if (fio_test_cconv(&def_thread.o))
2753                 log_err("fio: failed internal cconv test\n");
2754
2755         job_files = parse_cmd_line(argc, argv, type);
2756
2757         if (job_files > 0) {
2758                 for (i = 0; i < job_files; i++) {
2759                         if (i && fill_def_thread())
2760                                 return 1;
2761                         if (nr_clients) {
2762                                 if (fio_clients_send_ini(ini_file[i]))
2763                                         return 1;
2764                                 free(ini_file[i]);
2765                         } else if (!is_backend) {
2766                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2767                                         return 1;
2768                                 free(ini_file[i]);
2769                         }
2770                 }
2771         } else if (nr_clients) {
2772                 if (fill_def_thread())
2773                         return 1;
2774                 if (fio_clients_send_ini(NULL))
2775                         return 1;
2776         }
2777
2778         free(ini_file);
2779         fio_options_free(&def_thread);
2780         filesetup_mem_free();
2781
2782         if (!thread_number) {
2783                 if (parse_dryrun())
2784                         return 0;
2785                 if (exec_profile)
2786                         return 0;
2787                 if (is_backend || nr_clients)
2788                         return 0;
2789                 if (did_arg)
2790                         return 0;
2791
2792                 log_err("No jobs(s) defined\n\n");
2793
2794                 if (!did_arg) {
2795                         usage(argv[0]);
2796                         return 1;
2797                 }
2798
2799                 return 0;
2800         }
2801
2802         if (output_format & FIO_OUTPUT_NORMAL)
2803                 log_info("%s\n", fio_version_string);
2804
2805         return 0;
2806 }
2807
2808 void options_default_fill(struct thread_options *o)
2809 {
2810         memcpy(o, &def_thread.o, sizeof(*o));
2811 }
2812
2813 struct thread_data *get_global_options(void)
2814 {
2815         return &def_thread;
2816 }