1a0f7385dfcbe5fe994ba8757f8e22b254b92ed4
[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 <getopt.h>
12 #include <sys/ipc.h>
13 #include <sys/shm.h>
14 #include <sys/types.h>
15 #include <sys/stat.h>
16
17 #include "fio.h"
18 #include "parse.h"
19
20 static char fio_version_string[] = "fio 1.18.1";
21
22 #define FIO_RANDSEED            (0xb1899bedUL)
23
24 static char **ini_file;
25 static int max_jobs = MAX_JOBS;
26 static int dump_cmdline;
27
28 struct thread_data def_thread;
29 struct thread_data *threads = NULL;
30
31 int exitall_on_terminate = 0;
32 int terse_output = 0;
33 int eta_print;
34 unsigned long long mlock_size = 0;
35 FILE *f_out = NULL;
36 FILE *f_err = NULL;
37 char *job_section = NULL;
38
39 int write_bw_log = 0;
40 int read_only = 0;
41
42 static int def_timeout = 0;
43 static int write_lat_log = 0;
44
45 static int prev_group_jobs;
46
47 unsigned long fio_debug = 0;
48
49 /*
50  * Command line options. These will contain the above, plus a few
51  * extra that only pertain to fio itself and not jobs.
52  */
53 static struct option long_options[FIO_NR_OPTIONS] = {
54         {
55                 .name           = "output",
56                 .has_arg        = required_argument,
57                 .val            = 'o',
58         },
59         {
60                 .name           = "timeout",
61                 .has_arg        = required_argument,
62                 .val            = 't',
63         },
64         {
65                 .name           = "latency-log",
66                 .has_arg        = required_argument,
67                 .val            = 'l',
68         },
69         {
70                 .name           = "bandwidth-log",
71                 .has_arg        = required_argument,
72                 .val            = 'b',
73         },
74         {
75                 .name           = "minimal",
76                 .has_arg        = optional_argument,
77                 .val            = 'm',
78         },
79         {
80                 .name           = "version",
81                 .has_arg        = no_argument,
82                 .val            = 'v',
83         },
84         {
85                 .name           = "help",
86                 .has_arg        = no_argument,
87                 .val            = 'h',
88         },
89         {
90                 .name           = "cmdhelp",
91                 .has_arg        = optional_argument,
92                 .val            = 'c',
93         },
94         {
95                 .name           = "showcmd",
96                 .has_arg        = no_argument,
97                 .val            = 's',
98         },
99         {
100                 .name           = "readonly",
101                 .has_arg        = no_argument,
102                 .val            = 'r',
103         },
104         {
105                 .name           = "eta",
106                 .has_arg        = required_argument,
107                 .val            = 'e',
108         },
109         {
110                 .name           = "debug",
111                 .has_arg        = required_argument,
112                 .val            = 'd',
113         },
114         {
115                 .name           = "section",
116                 .has_arg        = required_argument,
117                 .val            = 'x',
118         },
119         {
120                 .name           = NULL,
121         },
122 };
123
124 FILE *get_f_out()
125 {
126         return f_out;
127 }
128
129 FILE *get_f_err()
130 {
131         return f_err;
132 }
133
134 /*
135  * Return a free job structure.
136  */
137 static struct thread_data *get_new_job(int global, struct thread_data *parent)
138 {
139         struct thread_data *td;
140
141         if (global)
142                 return &def_thread;
143         if (thread_number >= max_jobs)
144                 return NULL;
145
146         td = &threads[thread_number++];
147         *td = *parent;
148
149         dup_files(td, parent);
150         options_mem_dupe(td);
151
152         td->thread_number = thread_number;
153         return td;
154 }
155
156 static void put_job(struct thread_data *td)
157 {
158         if (td == &def_thread)
159                 return;
160
161         if (td->error)
162                 log_info("fio: %s\n", td->verror);
163
164         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
165         thread_number--;
166 }
167
168 static int setup_rate(struct thread_data *td)
169 {
170         unsigned long nr_reads_per_msec;
171         unsigned long long rate;
172         unsigned int bs;
173
174         if (!td->o.rate && !td->o.rate_iops)
175                 return 0;
176
177         if (td_rw(td))
178                 bs = td->o.rw_min_bs;
179         else if (td_read(td))
180                 bs = td->o.min_bs[DDIR_READ];
181         else
182                 bs = td->o.min_bs[DDIR_WRITE];
183
184         if (td->o.rate) {
185                 rate = td->o.rate;
186                 nr_reads_per_msec = (rate * 1024 * 1000LL) / bs;
187         } else
188                 nr_reads_per_msec = td->o.rate_iops * 1000UL;
189
190         if (!nr_reads_per_msec) {
191                 log_err("rate lower than supported\n");
192                 return -1;
193         }
194
195         td->rate_usec_cycle = 1000000000ULL / nr_reads_per_msec;
196         td->rate_pending_usleep = 0;
197         return 0;
198 }
199
200 /*
201  * Lazy way of fixing up options that depend on each other. We could also
202  * define option callback handlers, but this is easier.
203  */
204 static int fixup_options(struct thread_data *td)
205 {
206         struct thread_options *o = &td->o;
207
208         if (read_only && td_write(td)) {
209                 log_err("fio: job <%s> has write bit set, but fio is in read-only mode\n", td->o.name);
210                 return 1;
211         }
212         
213         if (o->rwmix[DDIR_READ] + o->rwmix[DDIR_WRITE] > 100)
214                 o->rwmix[DDIR_WRITE] = 100 - o->rwmix[DDIR_READ];
215
216         if (o->write_iolog_file && o->read_iolog_file) {
217                 log_err("fio: read iolog overrides write_iolog\n");
218                 free(o->write_iolog_file);
219                 o->write_iolog_file = NULL;
220         }
221
222         /*
223          * only really works for sequential io for now, and with 1 file
224          */
225         if (o->zone_size && td_random(td) && o->open_files == 1)
226                 o->zone_size = 0;
227
228         /*
229          * Reads can do overwrites, we always need to pre-create the file
230          */
231         if (td_read(td) || td_rw(td))
232                 o->overwrite = 1;
233
234         if (!o->min_bs[DDIR_READ])
235                 o->min_bs[DDIR_READ]= o->bs[DDIR_READ];
236         if (!o->max_bs[DDIR_READ])
237                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
238         if (!o->min_bs[DDIR_WRITE])
239                 o->min_bs[DDIR_WRITE]= o->bs[DDIR_WRITE];
240         if (!o->max_bs[DDIR_WRITE])
241                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
242
243         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
244
245         if (!o->file_size_high)
246                 o->file_size_high = o->file_size_low;
247
248         if (o->norandommap && o->verify != VERIFY_NONE) {
249                 log_err("fio: norandommap given, verify disabled\n");
250                 o->verify = VERIFY_NONE;
251         }
252         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
253                 log_err("fio: bs_unaligned may not work with raw io\n");
254
255         /*
256          * thinktime_spin must be less than thinktime
257          */
258         if (o->thinktime_spin > o->thinktime)
259                 o->thinktime_spin = o->thinktime;
260
261         /*
262          * The low water mark cannot be bigger than the iodepth
263          */
264         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
265                 /*
266                  * syslet work around - if the workload is sequential,
267                  * we want to let the queue drain all the way down to
268                  * avoid seeking between async threads
269                  */
270                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
271                         o->iodepth_low = 1;
272                 else
273                         o->iodepth_low = o->iodepth;
274         }
275
276         /*
277          * If batch number isn't set, default to the same as iodepth
278          */
279         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
280                 o->iodepth_batch = o->iodepth;
281
282         if (o->nr_files > td->files_index)
283                 o->nr_files = td->files_index;
284
285         if (o->open_files > o->nr_files || !o->open_files)
286                 o->open_files = o->nr_files;
287
288         if ((o->rate && o->rate_iops) || (o->ratemin && o->rate_iops_min)) {
289                 log_err("fio: rate and rate_iops are mutually exclusive\n");
290                 return 1;
291         }
292         if ((o->rate < o->ratemin) || (o->rate_iops < o->rate_iops_min)) {
293                 log_err("fio: minimum rate exceeds rate\n");
294                 return 1;
295         }
296
297         if (!o->timeout && o->time_based) {
298                 log_err("fio: time_based requires a runtime/timeout setting\n");
299                 o->time_based = 0;
300         }
301
302         if (o->fill_device && !o->size)
303                 o->size = ULONG_LONG_MAX;
304         
305         if (td_rw(td) && td->o.verify != VERIFY_NONE)
306                 log_info("fio: mixed read/write workload with verify. May not "
307                  "work as expected, unless you pre-populated the file\n");
308
309         return 0;
310 }
311
312 /*
313  * This function leaks the buffer
314  */
315 static char *to_kmg(unsigned int val)
316 {
317         char *buf = malloc(32);
318         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
319         char *p = post;
320
321         do {
322                 if (val & 1023)
323                         break;
324
325                 val >>= 10;
326                 p++;
327         } while (*p);
328
329         snprintf(buf, 31, "%u%c", val, *p);
330         return buf;
331 }
332
333 /* External engines are specified by "external:name.o") */
334 static const char *get_engine_name(const char *str)
335 {
336         char *p = strstr(str, ":");
337
338         if (!p)
339                 return str;
340
341         p++;
342         strip_blank_front(&p);
343         strip_blank_end(p);
344         return p;
345 }
346
347 static int exists_and_not_file(const char *filename)
348 {
349         struct stat sb;
350
351         if (lstat(filename, &sb) == -1)
352                 return 0;
353
354         if (S_ISREG(sb.st_mode))
355                 return 0;
356
357         return 1;
358 }
359
360 /*
361  * Initialize the various random states we need (random io, block size ranges,
362  * read/write mix, etc).
363  */
364 static int init_random_state(struct thread_data *td)
365 {
366         unsigned long seeds[6];
367         int fd;
368
369         fd = open("/dev/urandom", O_RDONLY);
370         if (fd == -1) {
371                 td_verror(td, errno, "open");
372                 return 1;
373         }
374
375         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
376                 td_verror(td, EIO, "read");
377                 close(fd);
378                 return 1;
379         }
380
381         close(fd);
382
383         os_random_seed(seeds[0], &td->bsrange_state);
384         os_random_seed(seeds[1], &td->verify_state);
385         os_random_seed(seeds[2], &td->rwmix_state);
386
387         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
388                 os_random_seed(seeds[3], &td->next_file_state);
389
390         os_random_seed(seeds[5], &td->file_size_state);
391
392         if (!td_random(td))
393                 return 0;
394
395         if (td->o.rand_repeatable)
396                 seeds[4] = FIO_RANDSEED * td->thread_number;
397
398         os_random_seed(seeds[4], &td->random_state);
399         return 0;
400 }
401
402 /*
403  * Adds a job to the list of things todo. Sanitizes the various options
404  * to make sure we don't have conflicts, and initializes various
405  * members of td.
406  */
407 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
408 {
409         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
410                                    "randread", "randwrite", "randrw" };
411         unsigned int i;
412         const char *engine;
413         char fname[PATH_MAX];
414         int numjobs, file_alloced;
415
416         /*
417          * the def_thread is just for options, it's not a real job
418          */
419         if (td == &def_thread)
420                 return 0;
421
422         /*
423          * if we are just dumping the output command line, don't add the job
424          */
425         if (dump_cmdline) {
426                 put_job(td);
427                 return 0;
428         }
429
430         engine = get_engine_name(td->o.ioengine);
431         td->io_ops = load_ioengine(td, engine);
432         if (!td->io_ops) {
433                 log_err("fio: failed to load engine %s\n", engine);
434                 goto err;
435         }
436
437         if (td->o.use_thread)
438                 nr_thread++;
439         else
440                 nr_process++;
441
442         if (td->o.odirect)
443                 td->io_ops->flags |= FIO_RAWIO;
444
445         file_alloced = 0;
446         if (!td->o.filename && !td->files_index) {
447                 file_alloced = 1;
448
449                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
450                         add_file(td, jobname);
451                 else {
452                         for (i = 0; i < td->o.nr_files; i++) {
453                                 sprintf(fname, "%s.%d.%d", jobname, td->thread_number, i);
454                                 add_file(td, fname);
455                         }
456                 }
457         }
458
459         if (fixup_options(td))
460                 goto err;
461
462         if (td->io_ops->flags & FIO_DISKLESSIO) {
463                 struct fio_file *f;
464
465                 for_each_file(td, f, i)
466                         f->real_file_size = -1ULL;
467         }
468
469         td->mutex = fio_sem_init(0);
470
471         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
472         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
473         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
474         td->ddir_nr = td->o.ddir_nr;
475
476         if ((td->o.stonewall || td->o.numjobs > 1 || td->o.new_group)
477              && prev_group_jobs) {
478                 prev_group_jobs = 0;
479                 groupid++;
480         }
481
482         td->groupid = groupid;
483         prev_group_jobs++;
484
485         if (init_random_state(td))
486                 goto err;
487
488         if (setup_rate(td))
489                 goto err;
490
491         if (td->o.write_lat_log) {
492                 setup_log(&td->ts.slat_log);
493                 setup_log(&td->ts.clat_log);
494         }
495         if (td->o.write_bw_log)
496                 setup_log(&td->ts.bw_log);
497
498         if (!td->o.name)
499                 td->o.name = strdup(jobname);
500
501         if (!terse_output) {
502                 if (!job_add_num) {
503                         if (!strcmp(td->io_ops->name, "cpuio"))
504                                 log_info("%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->o.name, td->o.cpuload, td->o.cpucycle);
505                         else {
506                                 char *c1, *c2, *c3, *c4;
507
508                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
509                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
510                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
511                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
512
513                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->o.name, td->groupid, ddir_str[td->o.td_ddir], c1, c2, c3, c4, td->io_ops->name, td->o.iodepth);
514
515                                 free(c1);
516                                 free(c2);
517                                 free(c3);
518                                 free(c4);
519                         }
520                 } else if (job_add_num == 1)
521                         log_info("...\n");
522         }
523
524         /*
525          * recurse add identical jobs, clear numjobs and stonewall options
526          * as they don't apply to sub-jobs
527          */
528         numjobs = td->o.numjobs;
529         while (--numjobs) {
530                 struct thread_data *td_new = get_new_job(0, td);
531
532                 if (!td_new)
533                         goto err;
534
535                 td_new->o.numjobs = 1;
536                 td_new->o.stonewall = 0;
537                 td_new->o.new_group = 0;
538
539                 if (file_alloced) {
540                         td_new->o.filename = NULL;
541                         td_new->files_index = 0;
542                         td_new->files = NULL;
543                 }
544
545                 job_add_num = numjobs - 1;
546
547                 if (add_job(td_new, jobname, job_add_num))
548                         goto err;
549         }
550
551         return 0;
552 err:
553         put_job(td);
554         return -1;
555 }
556
557 static int skip_this_section(const char *name)
558 {
559         if (!job_section)
560                 return 0;
561         if (!strncmp(name, "global", 6))
562                 return 0;
563
564         return strncmp(job_section, name, strlen(job_section));
565 }
566
567 static int is_empty_or_comment(char *line)
568 {
569         unsigned int i;
570
571         for (i = 0; i < strlen(line); i++) {
572                 if (line[i] == ';')
573                         return 1;
574                 if (line[i] == '#')
575                         return 1;
576                 if (!isspace(line[i]) && !iscntrl(line[i]))
577                         return 0;
578         }
579
580         return 1;
581 }
582
583 /*
584  * This is our [ini] type file parser.
585  */
586 static int parse_jobs_ini(char *file, int stonewall_flag)
587 {
588         unsigned int global;
589         struct thread_data *td;
590         char *string, *name;
591         FILE *f;
592         char *p;
593         int ret = 0, stonewall;
594         int first_sect = 1;
595         int skip_fgets = 0;
596         int inside_skip = 0;
597
598         if (!strcmp(file, "-"))
599                 f = stdin;
600         else
601                 f = fopen(file, "r");
602
603         if (!f) {
604                 perror("fopen job file");
605                 return 1;
606         }
607
608         string = malloc(4096);
609
610         /*
611          * it's really 256 + small bit, 280 should suffice
612          */
613         name = malloc(280);
614         memset(name, 0, 280);
615
616         stonewall = stonewall_flag;
617         do {
618                 /*
619                  * if skip_fgets is set, we already have loaded a line we
620                  * haven't handled.
621                  */
622                 if (!skip_fgets) {
623                         p = fgets(string, 4095, f);
624                         if (!p)
625                                 break;
626                 }
627
628                 skip_fgets = 0;
629                 strip_blank_front(&p);
630                 strip_blank_end(p);
631
632                 if (is_empty_or_comment(p))
633                         continue;
634                 if (sscanf(p, "[%255s]", name) != 1) {
635                         if (inside_skip)
636                                 continue;
637                         log_err("fio: option <%s> outside of [] job section\n", p);
638                         break;
639                 }
640
641                 if (skip_this_section(name)) {
642                         inside_skip = 1;
643                         continue;
644                 } else
645                         inside_skip = 0;
646
647                 global = !strncmp(name, "global", 6);
648
649                 name[strlen(name) - 1] = '\0';
650
651                 if (dump_cmdline) {
652                         if (first_sect)
653                                 log_info("fio ");
654                         if (!global)
655                                 log_info("--name=%s ", name);
656                         first_sect = 0;
657                 }
658
659                 td = get_new_job(global, &def_thread);
660                 if (!td) {
661                         ret = 1;
662                         break;
663                 }
664
665                 /*
666                  * Seperate multiple job files by a stonewall
667                  */
668                 if (!global && stonewall) {
669                         td->o.stonewall = stonewall;
670                         stonewall = 0;
671                 }
672
673                 while ((p = fgets(string, 4096, f)) != NULL) {
674                         if (is_empty_or_comment(p))
675                                 continue;
676
677                         strip_blank_front(&p);
678
679                         /*
680                          * new section, break out and make sure we don't
681                          * fgets() a new line at the top.
682                          */
683                         if (p[0] == '[') {
684                                 skip_fgets = 1;
685                                 break;
686                         }
687
688                         strip_blank_end(p);
689
690                         /*
691                          * Don't break here, continue parsing options so we
692                          * dump all the bad ones. Makes trial/error fixups
693                          * easier on the user.
694                          */
695                         ret |= fio_option_parse(td, p);
696                         if (!ret && dump_cmdline)
697                                 log_info("--%s ", p);
698                 }
699
700                 if (!ret)
701                         ret = add_job(td, name, 0);
702                 else {
703                         log_err("fio: job %s dropped\n", name);
704                         put_job(td);
705                 }
706         } while (!ret);
707
708         if (dump_cmdline)
709                 log_info("\n");
710
711         free(string);
712         free(name);
713         if (f != stdin)
714                 fclose(f);
715         return ret;
716 }
717
718 static int fill_def_thread(void)
719 {
720         memset(&def_thread, 0, sizeof(def_thread));
721
722         fio_getaffinity(getpid(), &def_thread.o.cpumask);
723
724         /*
725          * fill default options
726          */
727         fio_fill_default_options(&def_thread);
728
729         def_thread.o.timeout = def_timeout;
730         def_thread.o.write_bw_log = write_bw_log;
731         def_thread.o.write_lat_log = write_lat_log;
732
733         return 0;
734 }
735
736 static void free_shm(void)
737 {
738         struct shmid_ds sbuf;
739
740         if (threads) {
741                 shmdt((void *) threads);
742                 threads = NULL;
743                 shmctl(shm_id, IPC_RMID, &sbuf);
744         }
745 }
746
747 /*
748  * The thread area is shared between the main process and the job
749  * threads/processes. So setup a shared memory segment that will hold
750  * all the job info.
751  */
752 static int setup_thread_area(void)
753 {
754         /*
755          * 1024 is too much on some machines, scale max_jobs if
756          * we get a failure that looks like too large a shm segment
757          */
758         do {
759                 size_t size = max_jobs * sizeof(struct thread_data);
760
761                 shm_id = shmget(0, size, IPC_CREAT | 0600);
762                 if (shm_id != -1)
763                         break;
764                 if (errno != EINVAL) {
765                         perror("shmget");
766                         break;
767                 }
768
769                 max_jobs >>= 1;
770         } while (max_jobs);
771
772         if (shm_id == -1)
773                 return 1;
774
775         threads = shmat(shm_id, NULL, 0);
776         if (threads == (void *) -1) {
777                 perror("shmat");
778                 return 1;
779         }
780
781         memset(threads, 0, max_jobs * sizeof(struct thread_data));
782         atexit(free_shm);
783         return 0;
784 }
785
786 static void usage(const char *name)
787 {
788         printf("%s\n", fio_version_string);
789         printf("%s [options] [job options] <job file(s)>\n", name);
790         printf("\t--debug=options\tEnable debug logging\n");
791         printf("\t--output\tWrite output to file\n");
792         printf("\t--timeout\tRuntime in seconds\n");
793         printf("\t--latency-log\tGenerate per-job latency logs\n");
794         printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
795         printf("\t--minimal\tMinimal (terse) output\n");
796         printf("\t--version\tPrint version info and exit\n");
797         printf("\t--help\t\tPrint this page\n");
798         printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
799         printf("\t--showcmd\tTurn a job file into command line options\n");
800         printf("\t--eta=when\tWhen ETA estimate should be printed\n");
801         printf("\t          \tMay be \"always\", \"never\" or \"auto\"\n");
802         printf("\t--readonly\tTurn on safety read-only checks, preventing writes\n");
803         printf("\t--section=name\tOnly run specified section in job file\n");
804 }
805
806 #ifdef FIO_INC_DEBUG
807 struct debug_level debug_levels[] = {
808         { .name = "process",    .shift = FD_PROCESS, },
809         { .name = "file",       .shift = FD_FILE, },
810         { .name = "io",         .shift = FD_IO, },
811         { .name = "mem",        .shift = FD_MEM, },
812         { .name = "blktrace",   .shift = FD_BLKTRACE },
813         { .name = "verify",     .shift = FD_VERIFY },
814         { },
815 };
816
817 static void set_debug(const char *string)
818 {
819         struct debug_level *dl;
820         char *p = (char *) string;
821         char *opt;
822         int i;
823
824         if (!strcmp(string, "?") || !strcmp(string, "help")) {
825                 int i;
826
827                 log_info("fio: dumping debug options:");
828                 for (i = 0; debug_levels[i].name; i++) {
829                         dl = &debug_levels[i];
830                         log_info("%s,", dl->name);
831                 }
832                 log_info("all\n");
833                 return;
834         } else if (!strcmp(string, "all")) {
835                 fio_debug = ~0UL;
836                 return;
837         }
838
839         while ((opt = strsep(&p, ",")) != NULL) {
840                 int found = 0;
841
842                 for (i = 0; debug_levels[i].name; i++) {
843                         dl = &debug_levels[i];
844                         if (!strncmp(opt, dl->name, strlen(opt))) {
845                                 log_info("fio: set debug option %s\n", opt);
846                                 found = 1;
847                                 fio_debug |= (1UL << dl->shift);
848                                 break;
849                         }
850                 }
851
852                 if (!found)
853                         log_err("fio: debug mask %s not found\n", opt);
854         }
855 }
856 #else
857 static void set_debug(const char *string)
858 {
859         log_err("fio: debug tracing not included in build\n");
860 }
861 #endif
862
863 static int parse_cmd_line(int argc, char *argv[])
864 {
865         struct thread_data *td = NULL;
866         int c, ini_idx = 0, lidx, ret, dont_add_job = 0, bad_options = 0;
867
868         while ((c = getopt_long_only(argc, argv, "", long_options, &lidx)) != -1) {
869                 switch (c) {
870                 case 't':
871                         def_timeout = atoi(optarg);
872                         break;
873                 case 'l':
874                         write_lat_log = 1;
875                         break;
876                 case 'w':
877                         write_bw_log = 1;
878                         break;
879                 case 'o':
880                         f_out = fopen(optarg, "w+");
881                         if (!f_out) {
882                                 perror("fopen output");
883                                 exit(1);
884                         }
885                         f_err = f_out;
886                         break;
887                 case 'm':
888                         terse_output = 1;
889                         break;
890                 case 'h':
891                         usage(argv[0]);
892                         exit(0);
893                 case 'c':
894                         exit(fio_show_option_help(optarg));
895                 case 's':
896                         dump_cmdline = 1;
897                         break;
898                 case 'r':
899                         read_only = 1;
900                         break;
901                 case 'v':
902                         printf("%s\n", fio_version_string);
903                         exit(0);
904                 case 'e':
905                         if (!strcmp("always", optarg))
906                                 eta_print = FIO_ETA_ALWAYS;
907                         else if (!strcmp("never", optarg))
908                                 eta_print = FIO_ETA_NEVER;
909                         break;
910                 case 'd':
911                         set_debug(optarg);
912                         break;
913                 case 'x':
914                         if (!strcmp(optarg, "global")) {
915                                 log_err("fio: can't use global as only section\n");
916                                 bad_options++;
917                                 break;
918                         }
919                         if (job_section)
920                                 free(job_section);
921                         job_section = strdup(optarg);
922                         break;
923                 case FIO_GETOPT_JOB: {
924                         const char *opt = long_options[lidx].name;
925                         char *val = optarg;
926
927                         if (!strncmp(opt, "name", 4) && td) {
928                                 ret = add_job(td, td->o.name ?: "fio", 0);
929                                 if (ret) {
930                                         put_job(td);
931                                         return 0;
932                                 }
933                                 td = NULL;
934                         }
935                         if (!td) {
936                                 int is_section = !strncmp(opt, "name", 4);
937                                 int global = 0;
938
939                                 if (!is_section || !strncmp(val, "global", 6))
940                                         global = 1;
941
942                                 if (is_section && skip_this_section(val))
943                                         continue;
944
945                                 td = get_new_job(global, &def_thread);
946                                 if (!td)
947                                         return 0;
948                         }
949
950                         ret = fio_cmd_option_parse(td, opt, val);
951                         if (ret)
952                                 dont_add_job = 1;
953                         break;
954                 }
955                 default:
956                         bad_options++;
957                         break;
958                 }
959         }
960
961         if (bad_options)
962                 exit(1);
963
964         if (td) {
965                 if (dont_add_job)
966                         put_job(td);
967                 else {
968                         ret = add_job(td, td->o.name ?: "fio", 0);
969                         if (ret)
970                                 put_job(td);
971                 }
972         }
973
974         while (optind < argc) {
975                 ini_idx++;
976                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
977                 ini_file[ini_idx - 1] = strdup(argv[optind]);
978                 optind++;
979         }
980
981         return ini_idx;
982 }
983
984 int parse_options(int argc, char *argv[])
985 {
986         int job_files, i;
987
988         f_out = stdout;
989         f_err = stderr;
990
991         fio_options_dup_and_init(long_options);
992
993         if (setup_thread_area())
994                 return 1;
995         if (fill_def_thread())
996                 return 1;
997
998         job_files = parse_cmd_line(argc, argv);
999
1000         for (i = 0; i < job_files; i++) {
1001                 if (fill_def_thread())
1002                         return 1;
1003                 if (parse_jobs_ini(ini_file[i], i))
1004                         return 1;
1005                 free(ini_file[i]);
1006         }
1007
1008         free(ini_file);
1009         options_mem_free(&def_thread);
1010
1011         if (!thread_number) {
1012                 if (dump_cmdline)
1013                         return 0;
1014
1015                 log_err("No jobs defined(s)\n");
1016                 usage(argv[0]);
1017                 return 1;
1018         }
1019
1020         return 0;
1021 }