init.c revision b2cecdc28469f8042d6cc3d83d83b18086845f18 
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/shm.h>
13#include <sys/types.h>
14#include <sys/stat.h>
15
16#include "fio.h"
17#include "parse.h"
18#include "smalloc.h"
19#include "filehash.h"
20#include "verify.h"
21#include "profile.h"
22#include "server.h"
23
24#include "lib/getopt.h"
25
26const char fio_version_string[] = FIO_VERSION;
27
28#define FIO_RANDSEED		(0xb1899bedUL)
29
30static char **ini_file;
31static int max_jobs = FIO_MAX_JOBS;
32static int dump_cmdline;
33static int def_timeout;
34
35static struct thread_data def_thread;
36struct thread_data *threads = NULL;
37
38int exitall_on_terminate = 0;
39int terse_output = 0;
40int eta_print;
41unsigned long long mlock_size = 0;
42FILE *f_out = NULL;
43FILE *f_err = NULL;
44char **job_sections = NULL;
45int nr_job_sections = 0;
46char *exec_profile = NULL;
47int warnings_fatal = 0;
48int terse_version = 3;
49int is_backend = 0;
50int nr_clients = 0;
51int log_syslog = 0;
52
53int write_bw_log = 0;
54int read_only = 0;
55
56static int write_lat_log;
57
58static int prev_group_jobs;
59
60unsigned long fio_debug = 0;
61unsigned int fio_debug_jobno = -1;
62unsigned int *fio_debug_jobp = NULL;
63
64static char cmd_optstr[256];
65static int did_arg;
66
67const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
68	{ .u.f	=  1.00 },
69	{ .u.f	=  5.00 },
70	{ .u.f	= 10.00 },
71	{ .u.f	= 20.00 },
72	{ .u.f	= 30.00 },
73	{ .u.f	= 40.00 },
74	{ .u.f	= 50.00 },
75	{ .u.f	= 60.00 },
76	{ .u.f	= 70.00 },
77	{ .u.f	= 80.00 },
78	{ .u.f	= 90.00 },
79	{ .u.f	= 95.00 },
80	{ .u.f	= 99.00 },
81	{ .u.f	= 99.50 },
82	{ .u.f	= 99.90 },
83	{ .u.f	= 99.95 },
84	{ .u.f	= 99.99 },
85};
86
87#define FIO_CLIENT_FLAG		(1 << 16)
88
89/*
90 * Command line options. These will contain the above, plus a few
91 * extra that only pertain to fio itself and not jobs.
92 */
93static struct option l_opts[FIO_NR_OPTIONS] = {
94	{
95		.name		= (char *) "output",
96		.has_arg	= required_argument,
97		.val		= 'o' | FIO_CLIENT_FLAG,
98	},
99	{
100		.name		= (char *) "timeout",
101		.has_arg	= required_argument,
102		.val		= 't' | FIO_CLIENT_FLAG,
103	},
104	{
105		.name		= (char *) "latency-log",
106		.has_arg	= required_argument,
107		.val		= 'l' | FIO_CLIENT_FLAG,
108	},
109	{
110		.name		= (char *) "bandwidth-log",
111		.has_arg	= required_argument,
112		.val		= 'b' | FIO_CLIENT_FLAG,
113	},
114	{
115		.name		= (char *) "minimal",
116		.has_arg	= optional_argument,
117		.val		= 'm' | FIO_CLIENT_FLAG,
118	},
119	{
120		.name		= (char *) "version",
121		.has_arg	= no_argument,
122		.val		= 'v' | FIO_CLIENT_FLAG,
123	},
124	{
125		.name		= (char *) "help",
126		.has_arg	= no_argument,
127		.val		= 'h' | FIO_CLIENT_FLAG,
128	},
129	{
130		.name		= (char *) "cmdhelp",
131		.has_arg	= optional_argument,
132		.val		= 'c' | FIO_CLIENT_FLAG,
133	},
134	{
135		.name		   = (char *) "enghelp",
136		.has_arg	= optional_argument,
137		.val		    = 'i' | FIO_CLIENT_FLAG,
138	},
139	{
140		.name		= (char *) "showcmd",
141		.has_arg	= no_argument,
142		.val		= 's' | FIO_CLIENT_FLAG,
143	},
144	{
145		.name		= (char *) "readonly",
146		.has_arg	= no_argument,
147		.val		= 'r' | FIO_CLIENT_FLAG,
148	},
149	{
150		.name		= (char *) "eta",
151		.has_arg	= required_argument,
152		.val		= 'e' | FIO_CLIENT_FLAG,
153	},
154	{
155		.name		= (char *) "debug",
156		.has_arg	= required_argument,
157		.val		= 'd' | FIO_CLIENT_FLAG,
158	},
159	{
160		.name		= (char *) "section",
161		.has_arg	= required_argument,
162		.val		= 'x' | FIO_CLIENT_FLAG,
163	},
164	{
165		.name		= (char *) "alloc-size",
166		.has_arg	= required_argument,
167		.val		= 'a' | FIO_CLIENT_FLAG,
168	},
169	{
170		.name		= (char *) "profile",
171		.has_arg	= required_argument,
172		.val		= 'p' | FIO_CLIENT_FLAG,
173	},
174	{
175		.name		= (char *) "warnings-fatal",
176		.has_arg	= no_argument,
177		.val		= 'w' | FIO_CLIENT_FLAG,
178	},
179	{
180		.name		= (char *) "max-jobs",
181		.has_arg	= required_argument,
182		.val		= 'j' | FIO_CLIENT_FLAG,
183	},
184	{
185		.name		= (char *) "terse-version",
186		.has_arg	= required_argument,
187		.val		= 'V' | FIO_CLIENT_FLAG,
188	},
189	{
190		.name		= (char *) "server",
191		.has_arg	= optional_argument,
192		.val		= 'S',
193	},
194	{	.name		= (char *) "daemonize",
195		.has_arg	= required_argument,
196		.val		= 'D',
197	},
198	{
199		.name		= (char *) "client",
200		.has_arg	= required_argument,
201		.val		= 'C',
202	},
203	{
204		.name		= NULL,
205	},
206};
207
208static void free_shm(void)
209{
210	struct shmid_ds sbuf;
211
212	if (threads) {
213		void *tp = threads;
214
215		threads = NULL;
216		file_hash_exit();
217		flow_exit();
218		fio_debug_jobp = NULL;
219		shmdt(tp);
220		shmctl(shm_id, IPC_RMID, &sbuf);
221	}
222
223	scleanup();
224}
225
226/*
227 * The thread area is shared between the main process and the job
228 * threads/processes. So setup a shared memory segment that will hold
229 * all the job info. We use the end of the region for keeping track of
230 * open files across jobs, for file sharing.
231 */
232static int setup_thread_area(void)
233{
234	void *hash;
235
236	if (threads)
237		return 0;
238
239	/*
240	 * 1024 is too much on some machines, scale max_jobs if
241	 * we get a failure that looks like too large a shm segment
242	 */
243	do {
244		size_t size = max_jobs * sizeof(struct thread_data);
245
246		size += file_hash_size;
247		size += sizeof(unsigned int);
248
249		shm_id = shmget(0, size, IPC_CREAT | 0600);
250		if (shm_id != -1)
251			break;
252		if (errno != EINVAL && errno != ENOMEM) {
253			perror("shmget");
254			break;
255		}
256
257		max_jobs >>= 1;
258	} while (max_jobs);
259
260	if (shm_id == -1)
261		return 1;
262
263	threads = shmat(shm_id, NULL, 0);
264	if (threads == (void *) -1) {
265		perror("shmat");
266		return 1;
267	}
268
269	memset(threads, 0, max_jobs * sizeof(struct thread_data));
270	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
271	fio_debug_jobp = (void *) hash + file_hash_size;
272	*fio_debug_jobp = -1;
273	file_hash_init(hash);
274
275	flow_init();
276
277	return 0;
278}
279
280/*
281 * Return a free job structure.
282 */
283static struct thread_data *get_new_job(int global, struct thread_data *parent,
284				       int preserve_eo)
285{
286	struct thread_data *td;
287
288	if (global)
289		return &def_thread;
290	if (setup_thread_area()) {
291		log_err("error: failed to setup shm segment\n");
292		return NULL;
293	}
294	if (thread_number >= max_jobs) {
295		log_err("error: maximum number of jobs (%d) reached.\n",
296				max_jobs);
297		return NULL;
298	}
299
300	td = &threads[thread_number++];
301	*td = *parent;
302
303	td->io_ops = NULL;
304	if (!preserve_eo)
305		td->eo = NULL;
306
307	td->o.uid = td->o.gid = -1U;
308
309	dup_files(td, parent);
310	fio_options_mem_dupe(td);
311
312	profile_add_hooks(td);
313
314	td->thread_number = thread_number;
315	return td;
316}
317
318static void put_job(struct thread_data *td)
319{
320	if (td == &def_thread)
321		return;
322
323	profile_td_exit(td);
324	flow_exit_job(td);
325
326	if (td->error)
327		log_info("fio: %s\n", td->verror);
328
329	fio_options_free(td);
330	if (td->io_ops)
331		free_ioengine(td);
332
333	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
334	thread_number--;
335}
336
337static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
338{
339	unsigned int bs = td->o.min_bs[ddir];
340
341	assert(ddir_rw(ddir));
342
343	if (td->o.rate[ddir])
344		td->rate_bps[ddir] = td->o.rate[ddir];
345	else
346		td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
347
348	if (!td->rate_bps[ddir]) {
349		log_err("rate lower than supported\n");
350		return -1;
351	}
352
353	td->rate_pending_usleep[ddir] = 0;
354	return 0;
355}
356
357static int setup_rate(struct thread_data *td)
358{
359	int ret = 0;
360
361	if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
362		ret = __setup_rate(td, DDIR_READ);
363	if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
364		ret |= __setup_rate(td, DDIR_WRITE);
365
366	return ret;
367}
368
369static int fixed_block_size(struct thread_options *o)
370{
371	return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
372		o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
373		o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
374}
375
376/*
377 * Lazy way of fixing up options that depend on each other. We could also
378 * define option callback handlers, but this is easier.
379 */
380static int fixup_options(struct thread_data *td)
381{
382	struct thread_options *o = &td->o;
383	int ret = 0;
384
385#ifndef FIO_HAVE_PSHARED_MUTEX
386	if (!o->use_thread) {
387		log_info("fio: this platform does not support process shared"
388			 " mutexes, forcing use of threads. Use the 'thread'"
389			 " option to get rid of this warning.\n");
390		o->use_thread = 1;
391		ret = warnings_fatal;
392	}
393#endif
394
395	if (o->write_iolog_file && o->read_iolog_file) {
396		log_err("fio: read iolog overrides write_iolog\n");
397		free(o->write_iolog_file);
398		o->write_iolog_file = NULL;
399		ret = warnings_fatal;
400	}
401
402	/*
403	 * only really works with 1 file
404	 */
405	if (o->zone_size && o->open_files == 1)
406		o->zone_size = 0;
407
408	/*
409	 * If zone_range isn't specified, backward compatibility dictates it
410	 * should be made equal to zone_size.
411	 */
412	if (o->zone_size && !o->zone_range)
413		o->zone_range = o->zone_size;
414
415	/*
416	 * Reads can do overwrites, we always need to pre-create the file
417	 */
418	if (td_read(td) || td_rw(td))
419		o->overwrite = 1;
420
421	if (!o->min_bs[DDIR_READ])
422		o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
423	if (!o->max_bs[DDIR_READ])
424		o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
425	if (!o->min_bs[DDIR_WRITE])
426		o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
427	if (!o->max_bs[DDIR_WRITE])
428		o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
429
430	o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
431
432	/*
433	 * For random IO, allow blockalign offset other than min_bs.
434	 */
435	if (!o->ba[DDIR_READ] || !td_random(td))
436		o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
437	if (!o->ba[DDIR_WRITE] || !td_random(td))
438		o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
439
440	if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
441	    o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
442	    !o->norandommap) {
443		log_err("fio: Any use of blockalign= turns off randommap\n");
444		o->norandommap = 1;
445		ret = warnings_fatal;
446	}
447
448	if (!o->file_size_high)
449		o->file_size_high = o->file_size_low;
450
451	if (o->norandommap && o->verify != VERIFY_NONE
452	    && !fixed_block_size(o))  {
453		log_err("fio: norandommap given for variable block sizes, "
454			"verify disabled\n");
455		o->verify = VERIFY_NONE;
456		ret = warnings_fatal;
457	}
458	if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
459		log_err("fio: bs_unaligned may not work with raw io\n");
460
461	/*
462	 * thinktime_spin must be less than thinktime
463	 */
464	if (o->thinktime_spin > o->thinktime)
465		o->thinktime_spin = o->thinktime;
466
467	/*
468	 * The low water mark cannot be bigger than the iodepth
469	 */
470	if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
471		/*
472		 * syslet work around - if the workload is sequential,
473		 * we want to let the queue drain all the way down to
474		 * avoid seeking between async threads
475		 */
476		if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
477			o->iodepth_low = 1;
478		else
479			o->iodepth_low = o->iodepth;
480	}
481
482	/*
483	 * If batch number isn't set, default to the same as iodepth
484	 */
485	if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
486		o->iodepth_batch = o->iodepth;
487
488	if (o->nr_files > td->files_index)
489		o->nr_files = td->files_index;
490
491	if (o->open_files > o->nr_files || !o->open_files)
492		o->open_files = o->nr_files;
493
494	if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
495	    ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
496		o->rate_iops_min[1]))) {
497		log_err("fio: rate and rate_iops are mutually exclusive\n");
498		ret = 1;
499	}
500	if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
501	    (o->rate_iops[0] < o->rate_iops_min[0]) ||
502	    (o->rate_iops[1] < o->rate_iops_min[1])) {
503		log_err("fio: minimum rate exceeds rate\n");
504		ret = 1;
505	}
506
507	if (!o->timeout && o->time_based) {
508		log_err("fio: time_based requires a runtime/timeout setting\n");
509		o->time_based = 0;
510		ret = warnings_fatal;
511	}
512
513	if (o->fill_device && !o->size)
514		o->size = -1ULL;
515
516	if (o->verify != VERIFY_NONE) {
517		if (td_write(td) && o->do_verify && o->numjobs > 1) {
518			log_info("Multiple writers may overwrite blocks that "
519				"belong to other jobs. This can cause "
520				"verification failures.\n");
521			ret = warnings_fatal;
522		}
523
524		o->refill_buffers = 1;
525		if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
526		    !o->verify_interval)
527			o->verify_interval = o->min_bs[DDIR_WRITE];
528	}
529
530	if (o->pre_read) {
531		o->invalidate_cache = 0;
532		if (td->io_ops->flags & FIO_PIPEIO) {
533			log_info("fio: cannot pre-read files with an IO engine"
534				 " that isn't seekable. Pre-read disabled.\n");
535			ret = warnings_fatal;
536		}
537	}
538
539#ifndef FIO_HAVE_FDATASYNC
540	if (o->fdatasync_blocks) {
541		log_info("fio: this platform does not support fdatasync()"
542			 " falling back to using fsync().  Use the 'fsync'"
543			 " option instead of 'fdatasync' to get rid of"
544			 " this warning\n");
545		o->fsync_blocks = o->fdatasync_blocks;
546		o->fdatasync_blocks = 0;
547		ret = warnings_fatal;
548	}
549#endif
550
551#ifdef WIN32
552	/*
553	 * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
554	 * so fail if we're passed those flags
555	 */
556	if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
557		log_err("fio: Windows does not support direct or non-buffered io with"
558				" the synchronous ioengines. Use the 'windowsaio' ioengine"
559				" with 'direct=1' and 'iodepth=1' instead.\n");
560		ret = 1;
561	}
562#endif
563
564	/*
565	 * For fully compressible data, just zero them at init time.
566	 * It's faster than repeatedly filling it.
567	 */
568	if (td->o.compress_percentage == 100) {
569		td->o.zero_buffers = 1;
570		td->o.compress_percentage = 0;
571	}
572
573	return ret;
574}
575
576/*
577 * This function leaks the buffer
578 */
579static char *to_kmg(unsigned int val)
580{
581	char *buf = malloc(32);
582	char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
583	char *p = post;
584
585	do {
586		if (val & 1023)
587			break;
588
589		val >>= 10;
590		p++;
591	} while (*p);
592
593	snprintf(buf, 31, "%u%c", val, *p);
594	return buf;
595}
596
597/* External engines are specified by "external:name.o") */
598static const char *get_engine_name(const char *str)
599{
600	char *p = strstr(str, ":");
601
602	if (!p)
603		return str;
604
605	p++;
606	strip_blank_front(&p);
607	strip_blank_end(p);
608	return p;
609}
610
611static int exists_and_not_file(const char *filename)
612{
613	struct stat sb;
614
615	if (lstat(filename, &sb) == -1)
616		return 0;
617
618	/* \\.\ is the device namespace in Windows, where every file
619	 * is a device node */
620	if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
621		return 0;
622
623	return 1;
624}
625
626static void td_fill_rand_seeds_os(struct thread_data *td)
627{
628	os_random_seed(td->rand_seeds[0], &td->bsrange_state);
629	os_random_seed(td->rand_seeds[1], &td->verify_state);
630	os_random_seed(td->rand_seeds[2], &td->rwmix_state);
631
632	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
633		os_random_seed(td->rand_seeds[3], &td->next_file_state);
634
635	os_random_seed(td->rand_seeds[5], &td->file_size_state);
636	os_random_seed(td->rand_seeds[6], &td->trim_state);
637
638	if (!td_random(td))
639		return;
640
641	if (td->o.rand_repeatable)
642		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
643
644	os_random_seed(td->rand_seeds[4], &td->random_state);
645}
646
647static void td_fill_rand_seeds_internal(struct thread_data *td)
648{
649	init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
650	init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
651	init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
652
653	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
654		init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
655
656	init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
657	init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
658
659	if (!td_random(td))
660		return;
661
662	if (td->o.rand_repeatable)
663		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
664
665	init_rand_seed(&td->__random_state, td->rand_seeds[4]);
666}
667
668void td_fill_rand_seeds(struct thread_data *td)
669{
670	if (td->o.use_os_rand)
671		td_fill_rand_seeds_os(td);
672	else
673		td_fill_rand_seeds_internal(td);
674
675	init_rand_seed(&td->buf_state, td->rand_seeds[7]);
676}
677
678
679/*
680 * Initializes the ioengine configured for a job, if it has not been done so
681 * already.
682 */
683int ioengine_load(struct thread_data *td)
684{
685	const char *engine;
686
687	/*
688	 * Engine has already been loaded.
689	 */
690	if (td->io_ops)
691		return 0;
692
693	engine = get_engine_name(td->o.ioengine);
694	td->io_ops = load_ioengine(td, engine);
695	if (!td->io_ops) {
696		log_err("fio: failed to load engine %s\n", engine);
697		return 1;
698	}
699
700	if (td->io_ops->option_struct_size && td->io_ops->options) {
701		/*
702		 * In cases where td->eo is set, clone it for a child thread.
703		 * This requires that the parent thread has the same ioengine,
704		 * but that requirement must be enforced by the code which
705		 * cloned the thread.
706		 */
707		void *origeo = td->eo;
708		/*
709		 * Otherwise use the default thread options.
710		 */
711		if (!origeo && td != &def_thread && def_thread.eo &&
712		    def_thread.io_ops->options == td->io_ops->options)
713			origeo = def_thread.eo;
714
715		options_init(td->io_ops->options);
716		td->eo = malloc(td->io_ops->option_struct_size);
717		/*
718		 * Use the default thread as an option template if this uses the
719		 * same options structure and there are non-default options
720		 * used.
721		 */
722		if (origeo) {
723			memcpy(td->eo, origeo, td->io_ops->option_struct_size);
724			options_mem_dupe(td->eo, td->io_ops->options);
725		} else {
726			memset(td->eo, 0, td->io_ops->option_struct_size);
727			fill_default_options(td->eo, td->io_ops->options);
728		}
729		*(struct thread_data **)td->eo = td;
730	}
731
732	return 0;
733}
734
735/*
736 * Adds a job to the list of things todo. Sanitizes the various options
737 * to make sure we don't have conflicts, and initializes various
738 * members of td.
739 */
740static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
741{
742	const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
743				   "randread", "randwrite", "randrw" };
744	unsigned int i;
745	char fname[PATH_MAX];
746	int numjobs, file_alloced;
747
748	/*
749	 * the def_thread is just for options, it's not a real job
750	 */
751	if (td == &def_thread)
752		return 0;
753
754	/*
755	 * if we are just dumping the output command line, don't add the job
756	 */
757	if (dump_cmdline) {
758		put_job(td);
759		return 0;
760	}
761
762	if (profile_td_init(td))
763		goto err;
764
765	if (ioengine_load(td))
766		goto err;
767
768	if (td->o.use_thread)
769		nr_thread++;
770	else
771		nr_process++;
772
773	if (td->o.odirect)
774		td->io_ops->flags |= FIO_RAWIO;
775
776	file_alloced = 0;
777	if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
778		file_alloced = 1;
779
780		if (td->o.nr_files == 1 && exists_and_not_file(jobname))
781			add_file(td, jobname);
782		else {
783			for (i = 0; i < td->o.nr_files; i++) {
784				sprintf(fname, "%s.%d.%d", jobname,
785							td->thread_number, i);
786				add_file(td, fname);
787			}
788		}
789	}
790
791	if (fixup_options(td))
792		goto err;
793
794	flow_init_job(td);
795
796	/*
797	 * IO engines only need this for option callbacks, and the address may
798	 * change in subprocesses.
799	 */
800	if (td->eo)
801		*(struct thread_data **)td->eo = NULL;
802
803	if (td->io_ops->flags & FIO_DISKLESSIO) {
804		struct fio_file *f;
805
806		for_each_file(td, f, i)
807			f->real_file_size = -1ULL;
808	}
809
810	td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
811
812	td->ts.clat_percentiles = td->o.clat_percentiles;
813	if (td->o.overwrite_plist)
814		memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
815	else
816		memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
817
818	td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
819	td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
820	td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
821	td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
822	td->ddir_seq_nr = td->o.ddir_seq_nr;
823
824	if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
825		prev_group_jobs = 0;
826		groupid++;
827	}
828
829	td->groupid = groupid;
830	prev_group_jobs++;
831
832	if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
833		td_verror(td, errno, "init_random_state");
834		goto err;
835	}
836
837	if (setup_rate(td))
838		goto err;
839
840	if (td->o.write_lat_log) {
841		setup_log(&td->lat_log, td->o.log_avg_msec);
842		setup_log(&td->slat_log, td->o.log_avg_msec);
843		setup_log(&td->clat_log, td->o.log_avg_msec);
844	}
845	if (td->o.write_bw_log)
846		setup_log(&td->bw_log, td->o.log_avg_msec);
847	if (td->o.write_iops_log)
848		setup_log(&td->iops_log, td->o.log_avg_msec);
849
850	if (!td->o.name)
851		td->o.name = strdup(jobname);
852
853	if (!terse_output) {
854		if (!job_add_num) {
855			if (!strcmp(td->io_ops->name, "cpuio")) {
856				log_info("%s: ioengine=cpu, cpuload=%u,"
857					 " cpucycle=%u\n", td->o.name,
858							td->o.cpuload,
859							td->o.cpucycle);
860			} else {
861				char *c1, *c2, *c3, *c4;
862
863				c1 = to_kmg(td->o.min_bs[DDIR_READ]);
864				c2 = to_kmg(td->o.max_bs[DDIR_READ]);
865				c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
866				c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
867
868				log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
869					 " ioengine=%s, iodepth=%u\n",
870						td->o.name, td->groupid,
871						ddir_str[td->o.td_ddir],
872						c1, c2, c3, c4,
873						td->io_ops->name,
874						td->o.iodepth);
875
876				free(c1);
877				free(c2);
878				free(c3);
879				free(c4);
880			}
881		} else if (job_add_num == 1)
882			log_info("...\n");
883	}
884
885	/*
886	 * recurse add identical jobs, clear numjobs and stonewall options
887	 * as they don't apply to sub-jobs
888	 */
889	numjobs = td->o.numjobs;
890	while (--numjobs) {
891		struct thread_data *td_new = get_new_job(0, td, 1);
892
893		if (!td_new)
894			goto err;
895
896		td_new->o.numjobs = 1;
897		td_new->o.stonewall = 0;
898		td_new->o.new_group = 0;
899
900		if (file_alloced) {
901			td_new->o.filename = NULL;
902			td_new->files_index = 0;
903			td_new->files_size = 0;
904			td_new->files = NULL;
905		}
906
907		job_add_num = numjobs - 1;
908
909		if (add_job(td_new, jobname, job_add_num))
910			goto err;
911	}
912
913	return 0;
914err:
915	put_job(td);
916	return -1;
917}
918
919/*
920 * Parse as if 'o' was a command line
921 */
922void add_job_opts(const char **o)
923{
924	struct thread_data *td, *td_parent;
925	int i, in_global = 1;
926	char jobname[32];
927
928	i = 0;
929	td_parent = td = NULL;
930	while (o[i]) {
931		if (!strncmp(o[i], "name", 4)) {
932			in_global = 0;
933			if (td)
934				add_job(td, jobname, 0);
935			td = NULL;
936			sprintf(jobname, "%s", o[i] + 5);
937		}
938		if (in_global && !td_parent)
939			td_parent = get_new_job(1, &def_thread, 0);
940		else if (!in_global && !td) {
941			if (!td_parent)
942				td_parent = &def_thread;
943			td = get_new_job(0, td_parent, 0);
944		}
945		if (in_global)
946			fio_options_parse(td_parent, (char **) &o[i], 1);
947		else
948			fio_options_parse(td, (char **) &o[i], 1);
949		i++;
950	}
951
952	if (td)
953		add_job(td, jobname, 0);
954}
955
956static int skip_this_section(const char *name)
957{
958	int i;
959
960	if (!nr_job_sections)
961		return 0;
962	if (!strncmp(name, "global", 6))
963		return 0;
964
965	for (i = 0; i < nr_job_sections; i++)
966		if (!strcmp(job_sections[i], name))
967			return 0;
968
969	return 1;
970}
971
972static int is_empty_or_comment(char *line)
973{
974	unsigned int i;
975
976	for (i = 0; i < strlen(line); i++) {
977		if (line[i] == ';')
978			return 1;
979		if (line[i] == '#')
980			return 1;
981		if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
982			return 0;
983	}
984
985	return 1;
986}
987
988/*
989 * This is our [ini] type file parser.
990 */
991int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
992{
993	unsigned int global;
994	struct thread_data *td;
995	char *string, *name;
996	FILE *f;
997	char *p;
998	int ret = 0, stonewall;
999	int first_sect = 1;
1000	int skip_fgets = 0;
1001	int inside_skip = 0;
1002	char **opts;
1003	int i, alloc_opts, num_opts;
1004
1005	if (is_buf)
1006		f = NULL;
1007	else {
1008		if (!strcmp(file, "-"))
1009			f = stdin;
1010		else
1011			f = fopen(file, "r");
1012
1013		if (!f) {
1014			perror("fopen job file");
1015			return 1;
1016		}
1017	}
1018
1019	string = malloc(4096);
1020
1021	/*
1022	 * it's really 256 + small bit, 280 should suffice
1023	 */
1024	name = malloc(280);
1025	memset(name, 0, 280);
1026
1027	alloc_opts = 8;
1028	opts = malloc(sizeof(char *) * alloc_opts);
1029	num_opts = 0;
1030
1031	stonewall = stonewall_flag;
1032	do {
1033		/*
1034		 * if skip_fgets is set, we already have loaded a line we
1035		 * haven't handled.
1036		 */
1037		if (!skip_fgets) {
1038			if (is_buf)
1039				p = strsep(&file, "\n");
1040			else
1041				p = fgets(string, 4096, f);
1042			if (!p)
1043				break;
1044		}
1045
1046		skip_fgets = 0;
1047		strip_blank_front(&p);
1048		strip_blank_end(p);
1049
1050		if (is_empty_or_comment(p))
1051			continue;
1052		if (sscanf(p, "[%255[^\n]]", name) != 1) {
1053			if (inside_skip)
1054				continue;
1055			log_err("fio: option <%s> outside of [] job section\n",
1056									p);
1057			break;
1058		}
1059
1060		name[strlen(name) - 1] = '\0';
1061
1062		if (skip_this_section(name)) {
1063			inside_skip = 1;
1064			continue;
1065		} else
1066			inside_skip = 0;
1067
1068		global = !strncmp(name, "global", 6);
1069
1070		if (dump_cmdline) {
1071			if (first_sect)
1072				log_info("fio ");
1073			if (!global)
1074				log_info("--name=%s ", name);
1075			first_sect = 0;
1076		}
1077
1078		td = get_new_job(global, &def_thread, 0);
1079		if (!td) {
1080			ret = 1;
1081			break;
1082		}
1083
1084		/*
1085		 * Seperate multiple job files by a stonewall
1086		 */
1087		if (!global && stonewall) {
1088			td->o.stonewall = stonewall;
1089			stonewall = 0;
1090		}
1091
1092		num_opts = 0;
1093		memset(opts, 0, alloc_opts * sizeof(char *));
1094
1095		while (1) {
1096			if (is_buf)
1097				p = strsep(&file, "\n");
1098			else
1099				p = fgets(string, 4096, f);
1100			if (!p)
1101				break;
1102
1103			if (is_empty_or_comment(p))
1104				continue;
1105
1106			strip_blank_front(&p);
1107
1108			/*
1109			 * new section, break out and make sure we don't
1110			 * fgets() a new line at the top.
1111			 */
1112			if (p[0] == '[') {
1113				skip_fgets = 1;
1114				break;
1115			}
1116
1117			strip_blank_end(p);
1118
1119			if (num_opts == alloc_opts) {
1120				alloc_opts <<= 1;
1121				opts = realloc(opts,
1122						alloc_opts * sizeof(char *));
1123			}
1124
1125			opts[num_opts] = strdup(p);
1126			num_opts++;
1127		}
1128
1129		ret = fio_options_parse(td, opts, num_opts);
1130		if (!ret) {
1131			if (dump_cmdline)
1132				for (i = 0; i < num_opts; i++)
1133					log_info("--%s ", opts[i]);
1134
1135			ret = add_job(td, name, 0);
1136		} else {
1137			log_err("fio: job %s dropped\n", name);
1138			put_job(td);
1139		}
1140
1141		for (i = 0; i < num_opts; i++)
1142			free(opts[i]);
1143		num_opts = 0;
1144	} while (!ret);
1145
1146	if (dump_cmdline)
1147		log_info("\n");
1148
1149	i = 0;
1150	while (i < nr_job_sections) {
1151		free(job_sections[i]);
1152		i++;
1153	}
1154
1155	for (i = 0; i < num_opts; i++)
1156		free(opts[i]);
1157
1158	free(string);
1159	free(name);
1160	free(opts);
1161	if (!is_buf && f != stdin)
1162		fclose(f);
1163	return ret;
1164}
1165
1166static int fill_def_thread(void)
1167{
1168	memset(&def_thread, 0, sizeof(def_thread));
1169
1170	fio_getaffinity(getpid(), &def_thread.o.cpumask);
1171	def_thread.o.timeout = def_timeout;
1172
1173	/*
1174	 * fill default options
1175	 */
1176	fio_fill_default_options(&def_thread);
1177	return 0;
1178}
1179
1180static void usage(const char *name)
1181{
1182	printf("%s\n", fio_version_string);
1183	printf("%s [options] [job options] <job file(s)>\n", name);
1184	printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1185		"\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1186		"\t\t\tdiskutil,job,mutex,profile,time,net\n");
1187	printf("  --output\t\tWrite output to file\n");
1188	printf("  --runtime\t\tRuntime in seconds\n");
1189	printf("  --latency-log\t\tGenerate per-job latency logs\n");
1190	printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1191	printf("  --minimal\t\tMinimal (terse) output\n");
1192	printf("  --version\t\tPrint version info and exit\n");
1193	printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1194	printf("  --help\t\tPrint this page\n");
1195	printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1196		" them\n");
1197	printf("  --enghelp=engine\tPrint ioengine help, or list"
1198		" available ioengines\n");
1199	printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1200		" cmd\n");
1201	printf("  --showcmd\t\tTurn a job file into command line options\n");
1202	printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1203	printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1204	printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1205		" writes\n");
1206	printf("  --section=name\tOnly run specified section in job file\n");
1207	printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1208		" (def 1024)\n");
1209	printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1210	printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1211	printf("  --server=args\t\tStart a backend fio server\n");
1212	printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1213	printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1214	printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1215	printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1216}
1217
1218#ifdef FIO_INC_DEBUG
1219struct debug_level debug_levels[] = {
1220	{ .name = "process",	.shift = FD_PROCESS, },
1221	{ .name = "file",	.shift = FD_FILE, },
1222	{ .name = "io",		.shift = FD_IO, },
1223	{ .name = "mem",	.shift = FD_MEM, },
1224	{ .name = "blktrace",	.shift = FD_BLKTRACE },
1225	{ .name = "verify",	.shift = FD_VERIFY },
1226	{ .name = "random",	.shift = FD_RANDOM },
1227	{ .name = "parse",	.shift = FD_PARSE },
1228	{ .name = "diskutil",	.shift = FD_DISKUTIL },
1229	{ .name = "job",	.shift = FD_JOB },
1230	{ .name = "mutex",	.shift = FD_MUTEX },
1231	{ .name	= "profile",	.shift = FD_PROFILE },
1232	{ .name = "time",	.shift = FD_TIME },
1233	{ .name = "net",	.shift = FD_NET },
1234	{ .name = NULL, },
1235};
1236
1237static int set_debug(const char *string)
1238{
1239	struct debug_level *dl;
1240	char *p = (char *) string;
1241	char *opt;
1242	int i;
1243
1244	if (!strcmp(string, "?") || !strcmp(string, "help")) {
1245		log_info("fio: dumping debug options:");
1246		for (i = 0; debug_levels[i].name; i++) {
1247			dl = &debug_levels[i];
1248			log_info("%s,", dl->name);
1249		}
1250		log_info("all\n");
1251		return 1;
1252	}
1253
1254	while ((opt = strsep(&p, ",")) != NULL) {
1255		int found = 0;
1256
1257		if (!strncmp(opt, "all", 3)) {
1258			log_info("fio: set all debug options\n");
1259			fio_debug = ~0UL;
1260			continue;
1261		}
1262
1263		for (i = 0; debug_levels[i].name; i++) {
1264			dl = &debug_levels[i];
1265			found = !strncmp(opt, dl->name, strlen(dl->name));
1266			if (!found)
1267				continue;
1268
1269			if (dl->shift == FD_JOB) {
1270				opt = strchr(opt, ':');
1271				if (!opt) {
1272					log_err("fio: missing job number\n");
1273					break;
1274				}
1275				opt++;
1276				fio_debug_jobno = atoi(opt);
1277				log_info("fio: set debug jobno %d\n",
1278							fio_debug_jobno);
1279			} else {
1280				log_info("fio: set debug option %s\n", opt);
1281				fio_debug |= (1UL << dl->shift);
1282			}
1283			break;
1284		}
1285
1286		if (!found)
1287			log_err("fio: debug mask %s not found\n", opt);
1288	}
1289	return 0;
1290}
1291#else
1292static int set_debug(const char *string)
1293{
1294	log_err("fio: debug tracing not included in build\n");
1295	return 1;
1296}
1297#endif
1298
1299static void fio_options_fill_optstring(void)
1300{
1301	char *ostr = cmd_optstr;
1302	int i, c;
1303
1304	c = i = 0;
1305	while (l_opts[i].name) {
1306		ostr[c++] = l_opts[i].val;
1307		if (l_opts[i].has_arg == required_argument)
1308			ostr[c++] = ':';
1309		else if (l_opts[i].has_arg == optional_argument) {
1310			ostr[c++] = ':';
1311			ostr[c++] = ':';
1312		}
1313		i++;
1314	}
1315	ostr[c] = '\0';
1316}
1317
1318static int client_flag_set(char c)
1319{
1320	int i;
1321
1322	i = 0;
1323	while (l_opts[i].name) {
1324		int val = l_opts[i].val;
1325
1326		if (c == (val & 0xff))
1327			return (val & FIO_CLIENT_FLAG);
1328
1329		i++;
1330	}
1331
1332	return 0;
1333}
1334
1335void parse_cmd_client(void *client, char *opt)
1336{
1337	fio_client_add_cmd_option(client, opt);
1338}
1339
1340int parse_cmd_line(int argc, char *argv[])
1341{
1342	struct thread_data *td = NULL;
1343	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1344	char *ostr = cmd_optstr;
1345	void *pid_file = NULL;
1346	void *cur_client = NULL;
1347	int backend = 0;
1348
1349	/*
1350	 * Reset optind handling, since we may call this multiple times
1351	 * for the backend.
1352	 */
1353	optind = 1;
1354
1355	while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1356		did_arg = 1;
1357
1358		if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1359			parse_cmd_client(cur_client, argv[optind - 1]);
1360			c &= ~FIO_CLIENT_FLAG;
1361		}
1362
1363		switch (c) {
1364		case 'a':
1365			smalloc_pool_size = atoi(optarg);
1366			break;
1367		case 't':
1368			def_timeout = atoi(optarg);
1369			break;
1370		case 'l':
1371			write_lat_log = 1;
1372			break;
1373		case 'b':
1374			write_bw_log = 1;
1375			break;
1376		case 'o':
1377			f_out = fopen(optarg, "w+");
1378			if (!f_out) {
1379				perror("fopen output");
1380				exit(1);
1381			}
1382			f_err = f_out;
1383			break;
1384		case 'm':
1385			terse_output = 1;
1386			break;
1387		case 'h':
1388			if (!cur_client) {
1389				usage(argv[0]);
1390				do_exit++;
1391			}
1392			break;
1393		case 'c':
1394			if (!cur_client) {
1395				fio_show_option_help(optarg);
1396				do_exit++;
1397			}
1398			break;
1399		case 'i':
1400			if (!cur_client) {
1401				fio_show_ioengine_help(optarg);
1402				do_exit++;
1403			}
1404			break;
1405		case 's':
1406			dump_cmdline = 1;
1407			break;
1408		case 'r':
1409			read_only = 1;
1410			break;
1411		case 'v':
1412			if (!cur_client) {
1413				log_info("%s\n", fio_version_string);
1414				do_exit++;
1415			}
1416			break;
1417		case 'V':
1418			terse_version = atoi(optarg);
1419			if (!(terse_version == 2 || terse_version == 3)) {
1420				log_err("fio: bad terse version format\n");
1421				exit_val = 1;
1422				do_exit++;
1423			}
1424			break;
1425		case 'e':
1426			if (!strcmp("always", optarg))
1427				eta_print = FIO_ETA_ALWAYS;
1428			else if (!strcmp("never", optarg))
1429				eta_print = FIO_ETA_NEVER;
1430			break;
1431		case 'd':
1432			if (set_debug(optarg))
1433				do_exit++;
1434			break;
1435		case 'x': {
1436			size_t new_size;
1437
1438			if (!strcmp(optarg, "global")) {
1439				log_err("fio: can't use global as only "
1440					"section\n");
1441				do_exit++;
1442				exit_val = 1;
1443				break;
1444			}
1445			new_size = (nr_job_sections + 1) * sizeof(char *);
1446			job_sections = realloc(job_sections, new_size);
1447			job_sections[nr_job_sections] = strdup(optarg);
1448			nr_job_sections++;
1449			break;
1450			}
1451		case 'p':
1452			exec_profile = strdup(optarg);
1453			break;
1454		case FIO_GETOPT_JOB: {
1455			const char *opt = l_opts[lidx].name;
1456			char *val = optarg;
1457
1458			if (!strncmp(opt, "name", 4) && td) {
1459				ret = add_job(td, td->o.name ?: "fio", 0);
1460				if (ret)
1461					return 0;
1462				td = NULL;
1463			}
1464			if (!td) {
1465				int is_section = !strncmp(opt, "name", 4);
1466				int global = 0;
1467
1468				if (!is_section || !strncmp(val, "global", 6))
1469					global = 1;
1470
1471				if (is_section && skip_this_section(val))
1472					continue;
1473
1474				td = get_new_job(global, &def_thread, 1);
1475				if (!td || ioengine_load(td))
1476					return 0;
1477				fio_options_set_ioengine_opts(l_opts, td);
1478			}
1479
1480			ret = fio_cmd_option_parse(td, opt, val);
1481
1482			if (!ret && !strcmp(opt, "ioengine")) {
1483				free_ioengine(td);
1484				if (ioengine_load(td))
1485					return 0;
1486				fio_options_set_ioengine_opts(l_opts, td);
1487			}
1488			break;
1489		}
1490		case FIO_GETOPT_IOENGINE: {
1491			const char *opt = l_opts[lidx].name;
1492			char *val = optarg;
1493			opt = l_opts[lidx].name;
1494			val = optarg;
1495			ret = fio_cmd_ioengine_option_parse(td, opt, val);
1496			break;
1497		}
1498		case 'w':
1499			warnings_fatal = 1;
1500			break;
1501		case 'j':
1502			max_jobs = atoi(optarg);
1503			if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1504				log_err("fio: invalid max jobs: %d\n", max_jobs);
1505				do_exit++;
1506				exit_val = 1;
1507			}
1508			break;
1509		case 'S':
1510			if (nr_clients) {
1511				log_err("fio: can't be both client and server\n");
1512				do_exit++;
1513				exit_val = 1;
1514				break;
1515			}
1516			if (optarg)
1517				fio_server_set_arg(optarg);
1518			is_backend = 1;
1519			backend = 1;
1520			break;
1521		case 'D':
1522			pid_file = strdup(optarg);
1523			break;
1524		case 'C':
1525			if (is_backend) {
1526				log_err("fio: can't be both client and server\n");
1527				do_exit++;
1528				exit_val = 1;
1529				break;
1530			}
1531			if (fio_client_add(optarg, &cur_client)) {
1532				log_err("fio: failed adding client %s\n", optarg);
1533				do_exit++;
1534				exit_val = 1;
1535				break;
1536			}
1537			/*
1538			 * If the next argument exists and isn't an option,
1539			 * assume it's a job file for this client only.
1540			 */
1541			while (optind < argc) {
1542				if (!strncmp(argv[optind], "--", 2) ||
1543				    !strncmp(argv[optind], "-", 1))
1544					break;
1545
1546				fio_client_add_ini_file(cur_client, argv[optind]);
1547				optind++;
1548			}
1549			break;
1550		default:
1551			do_exit++;
1552			exit_val = 1;
1553			break;
1554		}
1555		if (do_exit)
1556			break;
1557	}
1558
1559	if (do_exit) {
1560		if (exit_val && !(is_backend || nr_clients))
1561			exit(exit_val);
1562	}
1563
1564	if (nr_clients && fio_clients_connect()) {
1565		do_exit++;
1566		exit_val = 1;
1567		return -1;
1568	}
1569
1570	if (is_backend && backend)
1571		return fio_start_server(pid_file);
1572
1573	if (td) {
1574		if (!ret)
1575			ret = add_job(td, td->o.name ?: "fio", 0);
1576	}
1577
1578	while (!ret && optind < argc) {
1579		ini_idx++;
1580		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1581		ini_file[ini_idx - 1] = strdup(argv[optind]);
1582		optind++;
1583	}
1584
1585	return ini_idx;
1586}
1587
1588int parse_options(int argc, char *argv[])
1589{
1590	int job_files, i;
1591
1592	f_out = stdout;
1593	f_err = stderr;
1594
1595	fio_options_fill_optstring();
1596	fio_options_dup_and_init(l_opts);
1597
1598	atexit(free_shm);
1599
1600	if (fill_def_thread())
1601		return 1;
1602
1603	job_files = parse_cmd_line(argc, argv);
1604
1605	if (job_files > 0) {
1606		for (i = 0; i < job_files; i++) {
1607			if (fill_def_thread())
1608				return 1;
1609			if (nr_clients) {
1610				if (fio_clients_send_ini(ini_file[i]))
1611					return 1;
1612				free(ini_file[i]);
1613			} else if (!is_backend) {
1614				if (parse_jobs_ini(ini_file[i], 0, i))
1615					return 1;
1616				free(ini_file[i]);
1617			}
1618		}
1619	} else if (nr_clients) {
1620		if (fill_def_thread())
1621			return 1;
1622		if (fio_clients_send_ini(NULL))
1623			return 1;
1624	}
1625
1626	free(ini_file);
1627	fio_options_free(&def_thread);
1628
1629	if (!thread_number) {
1630		if (dump_cmdline)
1631			return 0;
1632		if (exec_profile)
1633			return 0;
1634		if (is_backend || nr_clients)
1635			return 0;
1636		if (did_arg)
1637			return 0;
1638
1639		log_err("No jobs(s) defined\n\n");
1640
1641		if (!did_arg) {
1642			usage(argv[0]);
1643			return 1;
1644		}
1645
1646		return 0;
1647	}
1648
1649	if (def_thread.o.gtod_offload) {
1650		fio_gtod_init();
1651		fio_gtod_offload = 1;
1652		fio_gtod_cpu = def_thread.o.gtod_cpu;
1653	}
1654
1655	if (!terse_output)
1656		log_info("%s\n", fio_version_string);
1657
1658	return 0;
1659}
1660