9e2d1131d276637983094c1cbdf5afbb9172225a
[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
28 #include "lib/getopt.h"
29 #include "lib/strcasestr.h"
30
31 const char fio_version_string[] = FIO_VERSION;
32
33 #define FIO_RANDSEED            (0xb1899bedUL)
34
35 static char **ini_file;
36 static int max_jobs = FIO_MAX_JOBS;
37 static int dump_cmdline;
38 static int def_timeout;
39 static int parse_only;
40
41 static struct thread_data def_thread;
42 struct thread_data *threads = NULL;
43
44 int exitall_on_terminate = 0;
45 int output_format = FIO_OUTPUT_NORMAL;
46 int eta_print = FIO_ETA_AUTO;
47 int eta_new_line = 0;
48 FILE *f_out = NULL;
49 FILE *f_err = NULL;
50 char **job_sections = NULL;
51 int nr_job_sections = 0;
52 char *exec_profile = NULL;
53 int warnings_fatal = 0;
54 int terse_version = 3;
55 int is_backend = 0;
56 int nr_clients = 0;
57 int log_syslog = 0;
58
59 int write_bw_log = 0;
60 int read_only = 0;
61
62 static int write_lat_log;
63
64 static int prev_group_jobs;
65
66 unsigned long fio_debug = 0;
67 unsigned int fio_debug_jobno = -1;
68 unsigned int *fio_debug_jobp = NULL;
69
70 static char cmd_optstr[256];
71 static int did_arg;
72
73 #define FIO_CLIENT_FLAG         (1 << 16)
74
75 /*
76  * Command line options. These will contain the above, plus a few
77  * extra that only pertain to fio itself and not jobs.
78  */
79 static struct option l_opts[FIO_NR_OPTIONS] = {
80         {
81                 .name           = (char *) "output",
82                 .has_arg        = required_argument,
83                 .val            = 'o' | FIO_CLIENT_FLAG,
84         },
85         {
86                 .name           = (char *) "timeout",
87                 .has_arg        = required_argument,
88                 .val            = 't' | FIO_CLIENT_FLAG,
89         },
90         {
91                 .name           = (char *) "latency-log",
92                 .has_arg        = required_argument,
93                 .val            = 'l' | FIO_CLIENT_FLAG,
94         },
95         {
96                 .name           = (char *) "bandwidth-log",
97                 .has_arg        = required_argument,
98                 .val            = 'b' | FIO_CLIENT_FLAG,
99         },
100         {
101                 .name           = (char *) "minimal",
102                 .has_arg        = optional_argument,
103                 .val            = 'm' | FIO_CLIENT_FLAG,
104         },
105         {
106                 .name           = (char *) "output-format",
107                 .has_arg        = optional_argument,
108                 .val            = 'F' | FIO_CLIENT_FLAG,
109         },
110         {
111                 .name           = (char *) "version",
112                 .has_arg        = no_argument,
113                 .val            = 'v' | FIO_CLIENT_FLAG,
114         },
115         {
116                 .name           = (char *) "help",
117                 .has_arg        = no_argument,
118                 .val            = 'h' | FIO_CLIENT_FLAG,
119         },
120         {
121                 .name           = (char *) "cmdhelp",
122                 .has_arg        = optional_argument,
123                 .val            = 'c' | FIO_CLIENT_FLAG,
124         },
125         {
126                 .name              = (char *) "enghelp",
127                 .has_arg        = optional_argument,
128                 .val                = 'i' | FIO_CLIENT_FLAG,
129         },
130         {
131                 .name           = (char *) "showcmd",
132                 .has_arg        = no_argument,
133                 .val            = 's' | FIO_CLIENT_FLAG,
134         },
135         {
136                 .name           = (char *) "readonly",
137                 .has_arg        = no_argument,
138                 .val            = 'r' | FIO_CLIENT_FLAG,
139         },
140         {
141                 .name           = (char *) "eta",
142                 .has_arg        = required_argument,
143                 .val            = 'e' | FIO_CLIENT_FLAG,
144         },
145         {
146                 .name           = (char *) "eta-newline",
147                 .has_arg        = required_argument,
148                 .val            = 'E' | FIO_CLIENT_FLAG,
149         },
150         {
151                 .name           = (char *) "debug",
152                 .has_arg        = required_argument,
153                 .val            = 'd' | FIO_CLIENT_FLAG,
154         },
155         {
156                 .name           = (char *) "parse-only",
157                 .has_arg        = no_argument,
158                 .val            = 'P' | FIO_CLIENT_FLAG,
159         },
160         {
161                 .name           = (char *) "section",
162                 .has_arg        = required_argument,
163                 .val            = 'x' | FIO_CLIENT_FLAG,
164         },
165         {
166                 .name           = (char *) "alloc-size",
167                 .has_arg        = required_argument,
168                 .val            = 'a' | FIO_CLIENT_FLAG,
169         },
170         {
171                 .name           = (char *) "profile",
172                 .has_arg        = required_argument,
173                 .val            = 'p' | FIO_CLIENT_FLAG,
174         },
175         {
176                 .name           = (char *) "warnings-fatal",
177                 .has_arg        = no_argument,
178                 .val            = 'w' | FIO_CLIENT_FLAG,
179         },
180         {
181                 .name           = (char *) "max-jobs",
182                 .has_arg        = required_argument,
183                 .val            = 'j' | FIO_CLIENT_FLAG,
184         },
185         {
186                 .name           = (char *) "terse-version",
187                 .has_arg        = required_argument,
188                 .val            = 'V' | FIO_CLIENT_FLAG,
189         },
190         {
191                 .name           = (char *) "server",
192                 .has_arg        = optional_argument,
193                 .val            = 'S',
194         },
195         {       .name           = (char *) "daemonize",
196                 .has_arg        = required_argument,
197                 .val            = 'D',
198         },
199         {
200                 .name           = (char *) "client",
201                 .has_arg        = required_argument,
202                 .val            = 'C',
203         },
204         {
205                 .name           = (char *) "cpuclock-test",
206                 .has_arg        = no_argument,
207                 .val            = 'T',
208         },
209         {
210                 .name           = (char *) "idle-prof",
211                 .has_arg        = required_argument,
212                 .val            = 'I',
213         },
214         {
215                 .name           = NULL,
216         },
217 };
218
219 static void free_shm(void)
220 {
221         struct shmid_ds sbuf;
222
223         if (threads) {
224                 void *tp = threads;
225
226                 threads = NULL;
227                 file_hash_exit();
228                 flow_exit();
229                 fio_debug_jobp = NULL;
230                 shmdt(tp);
231                 shmctl(shm_id, IPC_RMID, &sbuf);
232         }
233
234         scleanup();
235 }
236
237 /*
238  * The thread area is shared between the main process and the job
239  * threads/processes. So setup a shared memory segment that will hold
240  * all the job info. We use the end of the region for keeping track of
241  * open files across jobs, for file sharing.
242  */
243 static int setup_thread_area(void)
244 {
245         void *hash;
246
247         if (threads)
248                 return 0;
249
250         /*
251          * 1024 is too much on some machines, scale max_jobs if
252          * we get a failure that looks like too large a shm segment
253          */
254         do {
255                 size_t size = max_jobs * sizeof(struct thread_data);
256
257                 size += file_hash_size;
258                 size += sizeof(unsigned int);
259
260                 shm_id = shmget(0, size, IPC_CREAT | 0600);
261                 if (shm_id != -1)
262                         break;
263                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
264                         perror("shmget");
265                         break;
266                 }
267
268                 max_jobs >>= 1;
269         } while (max_jobs);
270
271         if (shm_id == -1)
272                 return 1;
273
274         threads = shmat(shm_id, NULL, 0);
275         if (threads == (void *) -1) {
276                 perror("shmat");
277                 return 1;
278         }
279
280         memset(threads, 0, max_jobs * sizeof(struct thread_data));
281         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
282         fio_debug_jobp = (void *) hash + file_hash_size;
283         *fio_debug_jobp = -1;
284         file_hash_init(hash);
285
286         flow_init();
287
288         return 0;
289 }
290
291 /*
292  * Return a free job structure.
293  */
294 static struct thread_data *get_new_job(int global, struct thread_data *parent,
295                                        int preserve_eo)
296 {
297         struct thread_data *td;
298
299         if (global)
300                 return &def_thread;
301         if (setup_thread_area()) {
302                 log_err("error: failed to setup shm segment\n");
303                 return NULL;
304         }
305         if (thread_number >= max_jobs) {
306                 log_err("error: maximum number of jobs (%d) reached.\n",
307                                 max_jobs);
308                 return NULL;
309         }
310
311         td = &threads[thread_number++];
312         *td = *parent;
313
314         td->io_ops = NULL;
315         if (!preserve_eo)
316                 td->eo = NULL;
317
318         td->o.uid = td->o.gid = -1U;
319
320         dup_files(td, parent);
321         fio_options_mem_dupe(td);
322
323         profile_add_hooks(td);
324
325         td->thread_number = thread_number;
326
327         if (!parent || !parent->o.group_reporting)
328                 stat_number++;
329
330         return td;
331 }
332
333 static void put_job(struct thread_data *td)
334 {
335         if (td == &def_thread)
336                 return;
337
338         profile_td_exit(td);
339         flow_exit_job(td);
340
341         if (td->error)
342                 log_info("fio: %s\n", td->verror);
343
344         fio_options_free(td);
345         if (td->io_ops)
346                 free_ioengine(td);
347
348         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
349         thread_number--;
350 }
351
352 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
353 {
354         unsigned int bs = td->o.min_bs[ddir];
355
356         assert(ddir_rw(ddir));
357
358         if (td->o.rate[ddir])
359                 td->rate_bps[ddir] = td->o.rate[ddir];
360         else
361                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
362
363         if (!td->rate_bps[ddir]) {
364                 log_err("rate lower than supported\n");
365                 return -1;
366         }
367
368         td->rate_pending_usleep[ddir] = 0;
369         return 0;
370 }
371
372 static int setup_rate(struct thread_data *td)
373 {
374         int ret = 0;
375
376         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
377                 ret = __setup_rate(td, DDIR_READ);
378         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
379                 ret |= __setup_rate(td, DDIR_WRITE);
380         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
381                 ret |= __setup_rate(td, DDIR_TRIM);
382
383         return ret;
384 }
385
386 static int fixed_block_size(struct thread_options *o)
387 {
388         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
389                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
390                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
391                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
392                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
393 }
394
395 /*
396  * Lazy way of fixing up options that depend on each other. We could also
397  * define option callback handlers, but this is easier.
398  */
399 static int fixup_options(struct thread_data *td)
400 {
401         struct thread_options *o = &td->o;
402         int ret = 0;
403
404 #ifndef FIO_HAVE_PSHARED_MUTEX
405         if (!o->use_thread) {
406                 log_info("fio: this platform does not support process shared"
407                          " mutexes, forcing use of threads. Use the 'thread'"
408                          " option to get rid of this warning.\n");
409                 o->use_thread = 1;
410                 ret = warnings_fatal;
411         }
412 #endif
413
414         if (o->write_iolog_file && o->read_iolog_file) {
415                 log_err("fio: read iolog overrides write_iolog\n");
416                 free(o->write_iolog_file);
417                 o->write_iolog_file = NULL;
418                 ret = warnings_fatal;
419         }
420
421         /*
422          * only really works with 1 file
423          */
424         if (o->zone_size && o->open_files > 1)
425                 o->zone_size = 0;
426
427         /*
428          * If zone_range isn't specified, backward compatibility dictates it
429          * should be made equal to zone_size.
430          */
431         if (o->zone_size && !o->zone_range)
432                 o->zone_range = o->zone_size;
433
434         /*
435          * Reads can do overwrites, we always need to pre-create the file
436          */
437         if (td_read(td) || td_rw(td))
438                 o->overwrite = 1;
439
440         if (!o->min_bs[DDIR_READ])
441                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
442         if (!o->max_bs[DDIR_READ])
443                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
444         if (!o->min_bs[DDIR_WRITE])
445                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
446         if (!o->max_bs[DDIR_WRITE])
447                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
448         if (!o->min_bs[DDIR_TRIM])
449                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
450         if (!o->max_bs[DDIR_TRIM])
451                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
452
453
454         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
455         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
456
457         /*
458          * For random IO, allow blockalign offset other than min_bs.
459          */
460         if (!o->ba[DDIR_READ] || !td_random(td))
461                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
462         if (!o->ba[DDIR_WRITE] || !td_random(td))
463                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
464         if (!o->ba[DDIR_TRIM] || !td_random(td))
465                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
466
467         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
468             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
469             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
470             !o->norandommap) {
471                 log_err("fio: Any use of blockalign= turns off randommap\n");
472                 o->norandommap = 1;
473                 ret = warnings_fatal;
474         }
475
476         if (!o->file_size_high)
477                 o->file_size_high = o->file_size_low;
478
479         if (o->norandommap && o->verify != VERIFY_NONE
480             && !fixed_block_size(o))  {
481                 log_err("fio: norandommap given for variable block sizes, "
482                         "verify disabled\n");
483                 o->verify = VERIFY_NONE;
484                 ret = warnings_fatal;
485         }
486         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
487                 log_err("fio: bs_unaligned may not work with raw io\n");
488
489         /*
490          * thinktime_spin must be less than thinktime
491          */
492         if (o->thinktime_spin > o->thinktime)
493                 o->thinktime_spin = o->thinktime;
494
495         /*
496          * The low water mark cannot be bigger than the iodepth
497          */
498         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
499                 o->iodepth_low = o->iodepth;
500
501         /*
502          * If batch number isn't set, default to the same as iodepth
503          */
504         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
505                 o->iodepth_batch = o->iodepth;
506
507         if (o->nr_files > td->files_index)
508                 o->nr_files = td->files_index;
509
510         if (o->open_files > o->nr_files || !o->open_files)
511                 o->open_files = o->nr_files;
512
513         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
514             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
515             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
516             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
517                 log_err("fio: rate and rate_iops are mutually exclusive\n");
518                 ret = 1;
519         }
520         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
521             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
522             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
523             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
524             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
525             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
526                 log_err("fio: minimum rate exceeds rate\n");
527                 ret = 1;
528         }
529
530         if (!o->timeout && o->time_based) {
531                 log_err("fio: time_based requires a runtime/timeout setting\n");
532                 o->time_based = 0;
533                 ret = warnings_fatal;
534         }
535
536         if (o->fill_device && !o->size)
537                 o->size = -1ULL;
538
539         if (o->verify != VERIFY_NONE) {
540                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
541                         log_info("Multiple writers may overwrite blocks that "
542                                 "belong to other jobs. This can cause "
543                                 "verification failures.\n");
544                         ret = warnings_fatal;
545                 }
546
547                 o->refill_buffers = 1;
548                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
549                     !o->verify_interval)
550                         o->verify_interval = o->min_bs[DDIR_WRITE];
551         }
552
553         if (o->pre_read) {
554                 o->invalidate_cache = 0;
555                 if (td->io_ops->flags & FIO_PIPEIO) {
556                         log_info("fio: cannot pre-read files with an IO engine"
557                                  " that isn't seekable. Pre-read disabled.\n");
558                         ret = warnings_fatal;
559                 }
560         }
561
562         if (!o->unit_base) {
563                 if (td->io_ops->flags & FIO_BIT_BASED)
564                         o->unit_base = 1;
565                 else
566                         o->unit_base = 8;
567         }
568
569 #ifndef CONFIG_FDATASYNC
570         if (o->fdatasync_blocks) {
571                 log_info("fio: this platform does not support fdatasync()"
572                          " falling back to using fsync().  Use the 'fsync'"
573                          " option instead of 'fdatasync' to get rid of"
574                          " this warning\n");
575                 o->fsync_blocks = o->fdatasync_blocks;
576                 o->fdatasync_blocks = 0;
577                 ret = warnings_fatal;
578         }
579 #endif
580
581 #ifdef WIN32
582         /*
583          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
584          * so fail if we're passed those flags
585          */
586         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
587                 log_err("fio: Windows does not support direct or non-buffered io with"
588                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
589                                 " with 'direct=1' and 'iodepth=1' instead.\n");
590                 ret = 1;
591         }
592 #endif
593
594         /*
595          * For fully compressible data, just zero them at init time.
596          * It's faster than repeatedly filling it.
597          */
598         if (td->o.compress_percentage == 100) {
599                 td->o.zero_buffers = 1;
600                 td->o.compress_percentage = 0;
601         }
602
603         /*
604          * Using a non-uniform random distribution excludes usage of
605          * a random map
606          */
607         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
608                 td->o.norandommap = 1;
609
610         return ret;
611 }
612
613 /*
614  * This function leaks the buffer
615  */
616 static char *to_kmg(unsigned int val)
617 {
618         char *buf = malloc(32);
619         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
620         char *p = post;
621
622         do {
623                 if (val & 1023)
624                         break;
625
626                 val >>= 10;
627                 p++;
628         } while (*p);
629
630         snprintf(buf, 32, "%u%c", val, *p);
631         return buf;
632 }
633
634 /* External engines are specified by "external:name.o") */
635 static const char *get_engine_name(const char *str)
636 {
637         char *p = strstr(str, ":");
638
639         if (!p)
640                 return str;
641
642         p++;
643         strip_blank_front(&p);
644         strip_blank_end(p);
645         return p;
646 }
647
648 static int exists_and_not_file(const char *filename)
649 {
650         struct stat sb;
651
652         if (lstat(filename, &sb) == -1)
653                 return 0;
654
655         /* \\.\ is the device namespace in Windows, where every file
656          * is a device node */
657         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
658                 return 0;
659
660         return 1;
661 }
662
663 static void td_fill_rand_seeds_os(struct thread_data *td)
664 {
665         os_random_seed(td->rand_seeds[FIO_RAND_BS_OFF], &td->bsrange_state);
666         os_random_seed(td->rand_seeds[FIO_RAND_VER_OFF], &td->verify_state);
667         os_random_seed(td->rand_seeds[FIO_RAND_MIX_OFF], &td->rwmix_state);
668
669         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
670                 os_random_seed(td->rand_seeds[FIO_RAND_FILE_OFF], &td->next_file_state);
671
672         os_random_seed(td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], &td->file_size_state);
673         os_random_seed(td->rand_seeds[FIO_RAND_TRIM_OFF], &td->trim_state);
674
675         if (!td_random(td))
676                 return;
677
678         if (td->o.rand_repeatable)
679                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
680
681         os_random_seed(td->rand_seeds[FIO_RAND_BLOCK_OFF], &td->random_state);
682 }
683
684 static void td_fill_rand_seeds_internal(struct thread_data *td)
685 {
686         init_rand_seed(&td->__bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
687         init_rand_seed(&td->__verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
688         init_rand_seed(&td->__rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
689
690         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
691                 init_rand_seed(&td->__next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
692
693         init_rand_seed(&td->__file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
694         init_rand_seed(&td->__trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
695
696         if (!td_random(td))
697                 return;
698
699         if (td->o.rand_repeatable)
700                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
701
702         init_rand_seed(&td->__random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
703 }
704
705 void td_fill_rand_seeds(struct thread_data *td)
706 {
707         if (td->o.use_os_rand)
708                 td_fill_rand_seeds_os(td);
709         else
710                 td_fill_rand_seeds_internal(td);
711
712         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
713 }
714
715 /*
716  * Initializes the ioengine configured for a job, if it has not been done so
717  * already.
718  */
719 int ioengine_load(struct thread_data *td)
720 {
721         const char *engine;
722
723         /*
724          * Engine has already been loaded.
725          */
726         if (td->io_ops)
727                 return 0;
728
729         engine = get_engine_name(td->o.ioengine);
730         td->io_ops = load_ioengine(td, engine);
731         if (!td->io_ops) {
732                 log_err("fio: failed to load engine %s\n", engine);
733                 return 1;
734         }
735
736         if (td->io_ops->option_struct_size && td->io_ops->options) {
737                 /*
738                  * In cases where td->eo is set, clone it for a child thread.
739                  * This requires that the parent thread has the same ioengine,
740                  * but that requirement must be enforced by the code which
741                  * cloned the thread.
742                  */
743                 void *origeo = td->eo;
744                 /*
745                  * Otherwise use the default thread options.
746                  */
747                 if (!origeo && td != &def_thread && def_thread.eo &&
748                     def_thread.io_ops->options == td->io_ops->options)
749                         origeo = def_thread.eo;
750
751                 options_init(td->io_ops->options);
752                 td->eo = malloc(td->io_ops->option_struct_size);
753                 /*
754                  * Use the default thread as an option template if this uses the
755                  * same options structure and there are non-default options
756                  * used.
757                  */
758                 if (origeo) {
759                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
760                         options_mem_dupe(td->eo, td->io_ops->options);
761                 } else {
762                         memset(td->eo, 0, td->io_ops->option_struct_size);
763                         fill_default_options(td->eo, td->io_ops->options);
764                 }
765                 *(struct thread_data **)td->eo = td;
766         }
767
768         return 0;
769 }
770
771 static void init_flags(struct thread_data *td)
772 {
773         struct thread_options *o = &td->o;
774
775         if (o->verify_backlog)
776                 td->flags |= TD_F_VER_BACKLOG;
777         if (o->trim_backlog)
778                 td->flags |= TD_F_TRIM_BACKLOG;
779         if (o->read_iolog_file)
780                 td->flags |= TD_F_READ_IOLOG;
781         if (o->refill_buffers)
782                 td->flags |= TD_F_REFILL_BUFFERS;
783         if (o->scramble_buffers)
784                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
785         if (o->verify != VERIFY_NONE)
786                 td->flags |= TD_F_VER_NONE;
787 }
788
789 static int setup_random_seeds(struct thread_data *td)
790 {
791         unsigned long seed;
792         unsigned int i;
793
794         if (!td->o.rand_repeatable)
795                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
796
797         for (seed = 0x89, i = 0; i < 4; i++)
798                 seed *= 0x9e370001UL;
799
800         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
801                 td->rand_seeds[i] = seed;
802                 seed *= 0x9e370001UL;
803         }
804
805         td_fill_rand_seeds(td);
806         return 0;
807 }
808
809 enum {
810         FPRE_NONE = 0,
811         FPRE_JOBNAME,
812         FPRE_JOBNUM,
813         FPRE_FILENUM
814 };
815
816 static struct fpre_keyword {
817         const char *keyword;
818         size_t strlen;
819         int key;
820 } fpre_keywords[] = {
821         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
822         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
823         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
824         { .keyword = NULL, },
825         };
826
827 static char *make_filename(char *buf, struct thread_options *o,
828                            const char *jobname, int jobnum, int filenum)
829 {
830         struct fpre_keyword *f;
831         char copy[PATH_MAX];
832
833         if (!o->filename_format || !strlen(o->filename_format)) {
834                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
835                 return NULL;
836         }
837
838         for (f = &fpre_keywords[0]; f->keyword; f++)
839                 f->strlen = strlen(f->keyword);
840
841         strcpy(buf, o->filename_format);
842         memset(copy, 0, sizeof(copy));
843         for (f = &fpre_keywords[0]; f->keyword; f++) {
844                 do {
845                         size_t pre_len, post_start = 0;
846                         char *str, *dst = copy;
847
848                         str = strcasestr(buf, f->keyword);
849                         if (!str)
850                                 break;
851
852                         pre_len = str - buf;
853                         if (strlen(str) != f->strlen)
854                                 post_start = pre_len + f->strlen;
855
856                         if (pre_len) {
857                                 strncpy(dst, buf, pre_len);
858                                 dst += pre_len;
859                         }
860
861                         switch (f->key) {
862                         case FPRE_JOBNAME:
863                                 dst += sprintf(dst, "%s", jobname);
864                                 break;
865                         case FPRE_JOBNUM:
866                                 dst += sprintf(dst, "%d", jobnum);
867                                 break;
868                         case FPRE_FILENUM:
869                                 dst += sprintf(dst, "%d", filenum);
870                                 break;
871                         default:
872                                 assert(0);
873                                 break;
874                         }
875
876                         if (post_start)
877                                 strcpy(dst, buf + post_start);
878
879                         strcpy(buf, copy);
880                 } while (1);
881         }
882
883         return buf;
884 }
885 /*
886  * Adds a job to the list of things todo. Sanitizes the various options
887  * to make sure we don't have conflicts, and initializes various
888  * members of td.
889  */
890 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
891 {
892         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
893                                    "randread", "randwrite", "randrw",
894                                    "trim", NULL, NULL, NULL, "randtrim" };
895         unsigned int i;
896         char fname[PATH_MAX];
897         int numjobs, file_alloced;
898         struct thread_options *o = &td->o;
899
900         /*
901          * the def_thread is just for options, it's not a real job
902          */
903         if (td == &def_thread)
904                 return 0;
905
906         init_flags(td);
907
908         /*
909          * if we are just dumping the output command line, don't add the job
910          */
911         if (dump_cmdline || parse_only) {
912                 put_job(td);
913                 return 0;
914         }
915
916         if (profile_td_init(td))
917                 goto err;
918
919         if (ioengine_load(td))
920                 goto err;
921
922         if (o->use_thread)
923                 nr_thread++;
924         else
925                 nr_process++;
926
927         if (o->odirect)
928                 td->io_ops->flags |= FIO_RAWIO;
929
930         file_alloced = 0;
931         if (!o->filename && !td->files_index && !o->read_iolog_file) {
932                 file_alloced = 1;
933
934                 if (o->nr_files == 1 && exists_and_not_file(jobname))
935                         add_file(td, jobname);
936                 else {
937                         for (i = 0; i < o->nr_files; i++)
938                                 add_file(td, make_filename(fname, o, jobname, td->thread_number, i));
939                 }
940         }
941
942         if (fixup_options(td))
943                 goto err;
944
945         flow_init_job(td);
946
947         /*
948          * IO engines only need this for option callbacks, and the address may
949          * change in subprocesses.
950          */
951         if (td->eo)
952                 *(struct thread_data **)td->eo = NULL;
953
954         if (td->io_ops->flags & FIO_DISKLESSIO) {
955                 struct fio_file *f;
956
957                 for_each_file(td, f, i)
958                         f->real_file_size = -1ULL;
959         }
960
961         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
962
963         td->ts.clat_percentiles = o->clat_percentiles;
964         td->ts.percentile_precision = o->percentile_precision;
965         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
966
967         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
968                 td->ts.clat_stat[i].min_val = ULONG_MAX;
969                 td->ts.slat_stat[i].min_val = ULONG_MAX;
970                 td->ts.lat_stat[i].min_val = ULONG_MAX;
971                 td->ts.bw_stat[i].min_val = ULONG_MAX;
972         }
973         td->ddir_seq_nr = o->ddir_seq_nr;
974
975         if ((o->stonewall || o->new_group) && prev_group_jobs) {
976                 prev_group_jobs = 0;
977                 groupid++;
978         }
979
980         td->groupid = groupid;
981         prev_group_jobs++;
982
983         if (setup_random_seeds(td)) {
984                 td_verror(td, errno, "init_random_state");
985                 goto err;
986         }
987
988         if (setup_rate(td))
989                 goto err;
990
991         if (o->write_lat_log) {
992                 setup_log(&td->lat_log, o->log_avg_msec);
993                 setup_log(&td->slat_log, o->log_avg_msec);
994                 setup_log(&td->clat_log, o->log_avg_msec);
995         }
996         if (o->write_bw_log)
997                 setup_log(&td->bw_log, o->log_avg_msec);
998         if (o->write_iops_log)
999                 setup_log(&td->iops_log, o->log_avg_msec);
1000
1001         if (!o->name)
1002                 o->name = strdup(jobname);
1003
1004         if (output_format == FIO_OUTPUT_NORMAL) {
1005                 if (!job_add_num) {
1006                         if (!strcmp(td->io_ops->name, "cpuio")) {
1007                                 log_info("%s: ioengine=cpu, cpuload=%u,"
1008                                          " cpucycle=%u\n", o->name,
1009                                                 o->cpuload, o->cpucycle);
1010                         } else {
1011                                 char *c1, *c2, *c3, *c4, *c5, *c6;
1012
1013                                 c1 = to_kmg(o->min_bs[DDIR_READ]);
1014                                 c2 = to_kmg(o->max_bs[DDIR_READ]);
1015                                 c3 = to_kmg(o->min_bs[DDIR_WRITE]);
1016                                 c4 = to_kmg(o->max_bs[DDIR_WRITE]);
1017                                 c5 = to_kmg(o->min_bs[DDIR_TRIM]);
1018                                 c6 = to_kmg(o->max_bs[DDIR_TRIM]);
1019
1020                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
1021                                          " ioengine=%s, iodepth=%u\n",
1022                                                 o->name, td->groupid,
1023                                                 ddir_str[o->td_ddir],
1024                                                 c1, c2, c3, c4, c5, c6,
1025                                                 td->io_ops->name, o->iodepth);
1026
1027                                 free(c1);
1028                                 free(c2);
1029                                 free(c3);
1030                                 free(c4);
1031                                 free(c5);
1032                                 free(c6);
1033                         }
1034                 } else if (job_add_num == 1)
1035                         log_info("...\n");
1036         }
1037
1038         /*
1039          * recurse add identical jobs, clear numjobs and stonewall options
1040          * as they don't apply to sub-jobs
1041          */
1042         numjobs = o->numjobs;
1043         while (--numjobs) {
1044                 struct thread_data *td_new = get_new_job(0, td, 1);
1045
1046                 if (!td_new)
1047                         goto err;
1048
1049                 td_new->o.numjobs = 1;
1050                 td_new->o.stonewall = 0;
1051                 td_new->o.new_group = 0;
1052
1053                 if (file_alloced) {
1054                         td_new->o.filename = NULL;
1055                         td_new->files_index = 0;
1056                         td_new->files_size = 0;
1057                         td_new->files = NULL;
1058                 }
1059
1060                 job_add_num = numjobs - 1;
1061
1062                 if (add_job(td_new, jobname, job_add_num))
1063                         goto err;
1064         }
1065
1066         return 0;
1067 err:
1068         put_job(td);
1069         return -1;
1070 }
1071
1072 /*
1073  * Parse as if 'o' was a command line
1074  */
1075 void add_job_opts(const char **o)
1076 {
1077         struct thread_data *td, *td_parent;
1078         int i, in_global = 1;
1079         char jobname[32];
1080
1081         i = 0;
1082         td_parent = td = NULL;
1083         while (o[i]) {
1084                 if (!strncmp(o[i], "name", 4)) {
1085                         in_global = 0;
1086                         if (td)
1087                                 add_job(td, jobname, 0);
1088                         td = NULL;
1089                         sprintf(jobname, "%s", o[i] + 5);
1090                 }
1091                 if (in_global && !td_parent)
1092                         td_parent = get_new_job(1, &def_thread, 0);
1093                 else if (!in_global && !td) {
1094                         if (!td_parent)
1095                                 td_parent = &def_thread;
1096                         td = get_new_job(0, td_parent, 0);
1097                 }
1098                 if (in_global)
1099                         fio_options_parse(td_parent, (char **) &o[i], 1);
1100                 else
1101                         fio_options_parse(td, (char **) &o[i], 1);
1102                 i++;
1103         }
1104
1105         if (td)
1106                 add_job(td, jobname, 0);
1107 }
1108
1109 static int skip_this_section(const char *name)
1110 {
1111         int i;
1112
1113         if (!nr_job_sections)
1114                 return 0;
1115         if (!strncmp(name, "global", 6))
1116                 return 0;
1117
1118         for (i = 0; i < nr_job_sections; i++)
1119                 if (!strcmp(job_sections[i], name))
1120                         return 0;
1121
1122         return 1;
1123 }
1124
1125 static int is_empty_or_comment(char *line)
1126 {
1127         unsigned int i;
1128
1129         for (i = 0; i < strlen(line); i++) {
1130                 if (line[i] == ';')
1131                         return 1;
1132                 if (line[i] == '#')
1133                         return 1;
1134                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1135                         return 0;
1136         }
1137
1138         return 1;
1139 }
1140
1141 /*
1142  * This is our [ini] type file parser.
1143  */
1144 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1145 {
1146         unsigned int global;
1147         struct thread_data *td;
1148         char *string, *name;
1149         FILE *f;
1150         char *p;
1151         int ret = 0, stonewall;
1152         int first_sect = 1;
1153         int skip_fgets = 0;
1154         int inside_skip = 0;
1155         char **opts;
1156         int i, alloc_opts, num_opts;
1157
1158         if (is_buf)
1159                 f = NULL;
1160         else {
1161                 if (!strcmp(file, "-"))
1162                         f = stdin;
1163                 else
1164                         f = fopen(file, "r");
1165
1166                 if (!f) {
1167                         perror("fopen job file");
1168                         return 1;
1169                 }
1170         }
1171
1172         string = malloc(4096);
1173
1174         /*
1175          * it's really 256 + small bit, 280 should suffice
1176          */
1177         name = malloc(280);
1178         memset(name, 0, 280);
1179
1180         alloc_opts = 8;
1181         opts = malloc(sizeof(char *) * alloc_opts);
1182         num_opts = 0;
1183
1184         stonewall = stonewall_flag;
1185         do {
1186                 /*
1187                  * if skip_fgets is set, we already have loaded a line we
1188                  * haven't handled.
1189                  */
1190                 if (!skip_fgets) {
1191                         if (is_buf)
1192                                 p = strsep(&file, "\n");
1193                         else
1194                                 p = fgets(string, 4096, f);
1195                         if (!p)
1196                                 break;
1197                 }
1198
1199                 skip_fgets = 0;
1200                 strip_blank_front(&p);
1201                 strip_blank_end(p);
1202
1203                 if (is_empty_or_comment(p))
1204                         continue;
1205                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1206                         if (inside_skip)
1207                                 continue;
1208                         log_err("fio: option <%s> outside of [] job section\n",
1209                                                                         p);
1210                         break;
1211                 }
1212
1213                 name[strlen(name) - 1] = '\0';
1214
1215                 if (skip_this_section(name)) {
1216                         inside_skip = 1;
1217                         continue;
1218                 } else
1219                         inside_skip = 0;
1220
1221                 global = !strncmp(name, "global", 6);
1222
1223                 if (dump_cmdline) {
1224                         if (first_sect)
1225                                 log_info("fio ");
1226                         if (!global)
1227                                 log_info("--name=%s ", name);
1228                         first_sect = 0;
1229                 }
1230
1231                 td = get_new_job(global, &def_thread, 0);
1232                 if (!td) {
1233                         ret = 1;
1234                         break;
1235                 }
1236
1237                 /*
1238                  * Seperate multiple job files by a stonewall
1239                  */
1240                 if (!global && stonewall) {
1241                         td->o.stonewall = stonewall;
1242                         stonewall = 0;
1243                 }
1244
1245                 num_opts = 0;
1246                 memset(opts, 0, alloc_opts * sizeof(char *));
1247
1248                 while (1) {
1249                         if (is_buf)
1250                                 p = strsep(&file, "\n");
1251                         else
1252                                 p = fgets(string, 4096, f);
1253                         if (!p)
1254                                 break;
1255
1256                         if (is_empty_or_comment(p))
1257                                 continue;
1258
1259                         strip_blank_front(&p);
1260
1261                         /*
1262                          * new section, break out and make sure we don't
1263                          * fgets() a new line at the top.
1264                          */
1265                         if (p[0] == '[') {
1266                                 skip_fgets = 1;
1267                                 break;
1268                         }
1269
1270                         strip_blank_end(p);
1271
1272                         if (num_opts == alloc_opts) {
1273                                 alloc_opts <<= 1;
1274                                 opts = realloc(opts,
1275                                                 alloc_opts * sizeof(char *));
1276                         }
1277
1278                         opts[num_opts] = strdup(p);
1279                         num_opts++;
1280                 }
1281
1282                 ret = fio_options_parse(td, opts, num_opts);
1283                 if (!ret) {
1284                         if (dump_cmdline)
1285                                 for (i = 0; i < num_opts; i++)
1286                                         log_info("--%s ", opts[i]);
1287
1288                         ret = add_job(td, name, 0);
1289                 } else {
1290                         log_err("fio: job %s dropped\n", name);
1291                         put_job(td);
1292                 }
1293
1294                 for (i = 0; i < num_opts; i++)
1295                         free(opts[i]);
1296                 num_opts = 0;
1297         } while (!ret);
1298
1299         if (dump_cmdline)
1300                 log_info("\n");
1301
1302         i = 0;
1303         while (i < nr_job_sections) {
1304                 free(job_sections[i]);
1305                 i++;
1306         }
1307
1308         for (i = 0; i < num_opts; i++)
1309                 free(opts[i]);
1310
1311         free(string);
1312         free(name);
1313         free(opts);
1314         if (!is_buf && f != stdin)
1315                 fclose(f);
1316         return ret;
1317 }
1318
1319 static int fill_def_thread(void)
1320 {
1321         memset(&def_thread, 0, sizeof(def_thread));
1322
1323         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1324         def_thread.o.timeout = def_timeout;
1325         def_thread.o.error_dump = 1;
1326         /*
1327          * fill default options
1328          */
1329         fio_fill_default_options(&def_thread);
1330         return 0;
1331 }
1332
1333 static void usage(const char *name)
1334 {
1335         printf("%s\n", fio_version_string);
1336         printf("%s [options] [job options] <job file(s)>\n", name);
1337         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1338                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1339                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1340         printf("  --parse-only\t\tParse options only, don't start any IO\n");
1341         printf("  --output\t\tWrite output to file\n");
1342         printf("  --runtime\t\tRuntime in seconds\n");
1343         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1344         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1345         printf("  --minimal\t\tMinimal (terse) output\n");
1346         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1347         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1348         printf("  --version\t\tPrint version info and exit\n");
1349         printf("  --help\t\tPrint this page\n");
1350         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1351         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1352                 " them\n");
1353         printf("  --enghelp=engine\tPrint ioengine help, or list"
1354                 " available ioengines\n");
1355         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1356                 " cmd\n");
1357         printf("  --showcmd\t\tTurn a job file into command line options\n");
1358         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1359         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1360         printf("  --eta-newline=time\tForce a new line for every 'time'");
1361         printf(" period passed\n");
1362         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1363                 " writes\n");
1364         printf("  --section=name\tOnly run specified section in job file\n");
1365         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1366                 " (def 1024)\n");
1367         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1368         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1369         printf("  --server=args\t\tStart a backend fio server\n");
1370         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1371         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1372         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
1373                 "\t\t\t(option=system,percpu) or run unit work\n"
1374                 "\t\t\tcalibration only (option=calibrate)\n");
1375         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1376         printf("\n                   Jens Axboe <jaxboe@fusionio.com>\n");
1377 }
1378
1379 #ifdef FIO_INC_DEBUG
1380 struct debug_level debug_levels[] = {
1381         { .name = "process",    .shift = FD_PROCESS, },
1382         { .name = "file",       .shift = FD_FILE, },
1383         { .name = "io",         .shift = FD_IO, },
1384         { .name = "mem",        .shift = FD_MEM, },
1385         { .name = "blktrace",   .shift = FD_BLKTRACE },
1386         { .name = "verify",     .shift = FD_VERIFY },
1387         { .name = "random",     .shift = FD_RANDOM },
1388         { .name = "parse",      .shift = FD_PARSE },
1389         { .name = "diskutil",   .shift = FD_DISKUTIL },
1390         { .name = "job",        .shift = FD_JOB },
1391         { .name = "mutex",      .shift = FD_MUTEX },
1392         { .name = "profile",    .shift = FD_PROFILE },
1393         { .name = "time",       .shift = FD_TIME },
1394         { .name = "net",        .shift = FD_NET },
1395         { .name = NULL, },
1396 };
1397
1398 static int set_debug(const char *string)
1399 {
1400         struct debug_level *dl;
1401         char *p = (char *) string;
1402         char *opt;
1403         int i;
1404
1405         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1406                 log_info("fio: dumping debug options:");
1407                 for (i = 0; debug_levels[i].name; i++) {
1408                         dl = &debug_levels[i];
1409                         log_info("%s,", dl->name);
1410                 }
1411                 log_info("all\n");
1412                 return 1;
1413         }
1414
1415         while ((opt = strsep(&p, ",")) != NULL) {
1416                 int found = 0;
1417
1418                 if (!strncmp(opt, "all", 3)) {
1419                         log_info("fio: set all debug options\n");
1420                         fio_debug = ~0UL;
1421                         continue;
1422                 }
1423
1424                 for (i = 0; debug_levels[i].name; i++) {
1425                         dl = &debug_levels[i];
1426                         found = !strncmp(opt, dl->name, strlen(dl->name));
1427                         if (!found)
1428                                 continue;
1429
1430                         if (dl->shift == FD_JOB) {
1431                                 opt = strchr(opt, ':');
1432                                 if (!opt) {
1433                                         log_err("fio: missing job number\n");
1434                                         break;
1435                                 }
1436                                 opt++;
1437                                 fio_debug_jobno = atoi(opt);
1438                                 log_info("fio: set debug jobno %d\n",
1439                                                         fio_debug_jobno);
1440                         } else {
1441                                 log_info("fio: set debug option %s\n", opt);
1442                                 fio_debug |= (1UL << dl->shift);
1443                         }
1444                         break;
1445                 }
1446
1447                 if (!found)
1448                         log_err("fio: debug mask %s not found\n", opt);
1449         }
1450         return 0;
1451 }
1452 #else
1453 static int set_debug(const char *string)
1454 {
1455         log_err("fio: debug tracing not included in build\n");
1456         return 1;
1457 }
1458 #endif
1459
1460 static void fio_options_fill_optstring(void)
1461 {
1462         char *ostr = cmd_optstr;
1463         int i, c;
1464
1465         c = i = 0;
1466         while (l_opts[i].name) {
1467                 ostr[c++] = l_opts[i].val;
1468                 if (l_opts[i].has_arg == required_argument)
1469                         ostr[c++] = ':';
1470                 else if (l_opts[i].has_arg == optional_argument) {
1471                         ostr[c++] = ':';
1472                         ostr[c++] = ':';
1473                 }
1474                 i++;
1475         }
1476         ostr[c] = '\0';
1477 }
1478
1479 static int client_flag_set(char c)
1480 {
1481         int i;
1482
1483         i = 0;
1484         while (l_opts[i].name) {
1485                 int val = l_opts[i].val;
1486
1487                 if (c == (val & 0xff))
1488                         return (val & FIO_CLIENT_FLAG);
1489
1490                 i++;
1491         }
1492
1493         return 0;
1494 }
1495
1496 void parse_cmd_client(void *client, char *opt)
1497 {
1498         fio_client_add_cmd_option(client, opt);
1499 }
1500
1501 int parse_cmd_line(int argc, char *argv[])
1502 {
1503         struct thread_data *td = NULL;
1504         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1505         char *ostr = cmd_optstr;
1506         void *pid_file = NULL;
1507         void *cur_client = NULL;
1508         int backend = 0;
1509
1510         /*
1511          * Reset optind handling, since we may call this multiple times
1512          * for the backend.
1513          */
1514         optind = 1;
1515
1516         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1517                 did_arg = 1;
1518
1519                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1520                         parse_cmd_client(cur_client, argv[optind - 1]);
1521                         c &= ~FIO_CLIENT_FLAG;
1522                 }
1523
1524                 switch (c) {
1525                 case 'a':
1526                         smalloc_pool_size = atoi(optarg);
1527                         break;
1528                 case 't':
1529                         def_timeout = atoi(optarg);
1530                         break;
1531                 case 'l':
1532                         write_lat_log = 1;
1533                         break;
1534                 case 'b':
1535                         write_bw_log = 1;
1536                         break;
1537                 case 'o':
1538                         f_out = fopen(optarg, "w+");
1539                         if (!f_out) {
1540                                 perror("fopen output");
1541                                 exit(1);
1542                         }
1543                         f_err = f_out;
1544                         break;
1545                 case 'm':
1546                         output_format = FIO_OUTPUT_TERSE;
1547                         break;
1548                 case 'F':
1549                         if (!strcmp(optarg, "minimal") ||
1550                             !strcmp(optarg, "terse") ||
1551                             !strcmp(optarg, "csv"))
1552                                 output_format = FIO_OUTPUT_TERSE;
1553                         else if (!strcmp(optarg, "json"))
1554                                 output_format = FIO_OUTPUT_JSON;
1555                         else
1556                                 output_format = FIO_OUTPUT_NORMAL;
1557                         break;
1558                 case 'h':
1559                         if (!cur_client) {
1560                                 usage(argv[0]);
1561                                 do_exit++;
1562                         }
1563                         break;
1564                 case 'c':
1565                         if (!cur_client) {
1566                                 fio_show_option_help(optarg);
1567                                 do_exit++;
1568                         }
1569                         break;
1570                 case 'i':
1571                         if (!cur_client) {
1572                                 fio_show_ioengine_help(optarg);
1573                                 do_exit++;
1574                         }
1575                         break;
1576                 case 's':
1577                         dump_cmdline = 1;
1578                         break;
1579                 case 'r':
1580                         read_only = 1;
1581                         break;
1582                 case 'v':
1583                         if (!cur_client) {
1584                                 log_info("%s\n", fio_version_string);
1585                                 do_exit++;
1586                         }
1587                         break;
1588                 case 'V':
1589                         terse_version = atoi(optarg);
1590                         if (!(terse_version == 2 || terse_version == 3 ||
1591                              terse_version == 4)) {
1592                                 log_err("fio: bad terse version format\n");
1593                                 exit_val = 1;
1594                                 do_exit++;
1595                         }
1596                         break;
1597                 case 'e':
1598                         if (!strcmp("always", optarg))
1599                                 eta_print = FIO_ETA_ALWAYS;
1600                         else if (!strcmp("never", optarg))
1601                                 eta_print = FIO_ETA_NEVER;
1602                         break;
1603                 case 'E': {
1604                         long long t = 0;
1605
1606                         if (str_to_decimal(optarg, &t, 0, NULL)) {
1607                                 log_err("fio: failed parsing eta time %s\n", optarg);
1608                                 exit_val = 1;
1609                                 do_exit++;
1610                         }
1611                         eta_new_line = t;
1612                         break;
1613                         }
1614                 case 'd':
1615                         if (set_debug(optarg))
1616                                 do_exit++;
1617                         break;
1618                 case 'P':
1619                         parse_only = 1;
1620                         break;
1621                 case 'x': {
1622                         size_t new_size;
1623
1624                         if (!strcmp(optarg, "global")) {
1625                                 log_err("fio: can't use global as only "
1626                                         "section\n");
1627                                 do_exit++;
1628                                 exit_val = 1;
1629                                 break;
1630                         }
1631                         new_size = (nr_job_sections + 1) * sizeof(char *);
1632                         job_sections = realloc(job_sections, new_size);
1633                         job_sections[nr_job_sections] = strdup(optarg);
1634                         nr_job_sections++;
1635                         break;
1636                         }
1637                 case 'p':
1638                         exec_profile = strdup(optarg);
1639                         break;
1640                 case FIO_GETOPT_JOB: {
1641                         const char *opt = l_opts[lidx].name;
1642                         char *val = optarg;
1643
1644                         if (!strncmp(opt, "name", 4) && td) {
1645                                 ret = add_job(td, td->o.name ?: "fio", 0);
1646                                 if (ret)
1647                                         return 0;
1648                                 td = NULL;
1649                         }
1650                         if (!td) {
1651                                 int is_section = !strncmp(opt, "name", 4);
1652                                 int global = 0;
1653
1654                                 if (!is_section || !strncmp(val, "global", 6))
1655                                         global = 1;
1656
1657                                 if (is_section && skip_this_section(val))
1658                                         continue;
1659
1660                                 td = get_new_job(global, &def_thread, 1);
1661                                 if (!td || ioengine_load(td))
1662                                         return 0;
1663                                 fio_options_set_ioengine_opts(l_opts, td);
1664                         }
1665
1666                         ret = fio_cmd_option_parse(td, opt, val);
1667
1668                         if (!ret && !strcmp(opt, "ioengine")) {
1669                                 free_ioengine(td);
1670                                 if (ioengine_load(td))
1671                                         return 0;
1672                                 fio_options_set_ioengine_opts(l_opts, td);
1673                         }
1674                         break;
1675                 }
1676                 case FIO_GETOPT_IOENGINE: {
1677                         const char *opt = l_opts[lidx].name;
1678                         char *val = optarg;
1679                         opt = l_opts[lidx].name;
1680                         val = optarg;
1681                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1682                         break;
1683                 }
1684                 case 'w':
1685                         warnings_fatal = 1;
1686                         break;
1687                 case 'j':
1688                         max_jobs = atoi(optarg);
1689                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1690                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1691                                 do_exit++;
1692                                 exit_val = 1;
1693                         }
1694                         break;
1695                 case 'S':
1696                         if (nr_clients) {
1697                                 log_err("fio: can't be both client and server\n");
1698                                 do_exit++;
1699                                 exit_val = 1;
1700                                 break;
1701                         }
1702                         if (optarg)
1703                                 fio_server_set_arg(optarg);
1704                         is_backend = 1;
1705                         backend = 1;
1706                         break;
1707                 case 'D':
1708                         pid_file = strdup(optarg);
1709                         break;
1710                 case 'I':
1711                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
1712                                 /* exit on error and calibration only */
1713                                 do_exit++;
1714                                 if (ret == -1) 
1715                                         exit_val = 1;
1716                         }
1717                         break;
1718                 case 'C':
1719                         if (is_backend) {
1720                                 log_err("fio: can't be both client and server\n");
1721                                 do_exit++;
1722                                 exit_val = 1;
1723                                 break;
1724                         }
1725                         if (fio_client_add(optarg, &cur_client)) {
1726                                 log_err("fio: failed adding client %s\n", optarg);
1727                                 do_exit++;
1728                                 exit_val = 1;
1729                                 break;
1730                         }
1731                         /*
1732                          * If the next argument exists and isn't an option,
1733                          * assume it's a job file for this client only.
1734                          */
1735                         while (optind < argc) {
1736                                 if (!strncmp(argv[optind], "--", 2) ||
1737                                     !strncmp(argv[optind], "-", 1))
1738                                         break;
1739
1740                                 fio_client_add_ini_file(cur_client, argv[optind]);
1741                                 optind++;
1742                         }
1743                         break;
1744                 case 'T':
1745                         do_exit++;
1746                         exit_val = fio_monotonic_clocktest();
1747                         break;
1748                 case '?':
1749                         log_err("%s: unrecognized option '%s'\n", argv[0],
1750                                                         argv[optind - 1]);
1751                 default:
1752                         do_exit++;
1753                         exit_val = 1;
1754                         break;
1755                 }
1756                 if (do_exit)
1757                         break;
1758         }
1759
1760         if (do_exit) {
1761                 if (exit_val && !(is_backend || nr_clients))
1762                         exit(exit_val);
1763         }
1764
1765         if (nr_clients && fio_clients_connect()) {
1766                 do_exit++;
1767                 exit_val = 1;
1768                 return -1;
1769         }
1770
1771         if (is_backend && backend)
1772                 return fio_start_server(pid_file);
1773
1774         if (td) {
1775                 if (!ret)
1776                         ret = add_job(td, td->o.name ?: "fio", 0);
1777         }
1778
1779         while (!ret && optind < argc) {
1780                 ini_idx++;
1781                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1782                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1783                 optind++;
1784         }
1785
1786         return ini_idx;
1787 }
1788
1789 int parse_options(int argc, char *argv[])
1790 {
1791         int job_files, i;
1792
1793         f_out = stdout;
1794         f_err = stderr;
1795
1796         fio_options_fill_optstring();
1797         fio_options_dup_and_init(l_opts);
1798
1799         atexit(free_shm);
1800
1801         if (fill_def_thread())
1802                 return 1;
1803
1804         job_files = parse_cmd_line(argc, argv);
1805
1806         if (job_files > 0) {
1807                 for (i = 0; i < job_files; i++) {
1808                         if (fill_def_thread())
1809                                 return 1;
1810                         if (nr_clients) {
1811                                 if (fio_clients_send_ini(ini_file[i]))
1812                                         return 1;
1813                                 free(ini_file[i]);
1814                         } else if (!is_backend) {
1815                                 if (parse_jobs_ini(ini_file[i], 0, i))
1816                                         return 1;
1817                                 free(ini_file[i]);
1818                         }
1819                 }
1820         } else if (nr_clients) {
1821                 if (fill_def_thread())
1822                         return 1;
1823                 if (fio_clients_send_ini(NULL))
1824                         return 1;
1825         }
1826
1827         free(ini_file);
1828         fio_options_free(&def_thread);
1829
1830         if (!thread_number) {
1831                 if (dump_cmdline || parse_only)
1832                         return 0;
1833                 if (exec_profile)
1834                         return 0;
1835                 if (is_backend || nr_clients)
1836                         return 0;
1837                 if (did_arg)
1838                         return 0;
1839
1840                 log_err("No jobs(s) defined\n\n");
1841
1842                 if (!did_arg) {
1843                         usage(argv[0]);
1844                         return 1;
1845                 }
1846
1847                 return 0;
1848         }
1849
1850         if (def_thread.o.gtod_offload) {
1851                 fio_gtod_init();
1852                 fio_gtod_offload = 1;
1853                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1854         }
1855
1856         if (output_format == FIO_OUTPUT_NORMAL)
1857                 log_info("%s\n", fio_version_string);
1858
1859         return 0;
1860 }