init.c revision 0420ba6a85617cb02e196ac92e519191dafc6c52 
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
26#include "fio_version.h"
27
28#if FIO_PATCH > 0
29const char fio_version_string[] =	__fio_stringify(FIO_MAJOR) "."	\
30					__fio_stringify(FIO_MINOR) "."	\
31					__fio_stringify(FIO_PATCH);
32#else
33const char fio_version_string[] =	__fio_stringify(FIO_MAJOR) "."	\
34					__fio_stringify(FIO_MINOR);
35#endif
36
37#define FIO_RANDSEED		(0xb1899bedUL)
38
39static char **ini_file;
40static int max_jobs = FIO_MAX_JOBS;
41static int dump_cmdline;
42static int def_timeout;
43
44static struct thread_data def_thread;
45struct thread_data *threads = NULL;
46
47int exitall_on_terminate = 0;
48int terse_output = 0;
49int eta_print;
50unsigned long long mlock_size = 0;
51FILE *f_out = NULL;
52FILE *f_err = NULL;
53char **job_sections = NULL;
54int nr_job_sections = 0;
55char *exec_profile = NULL;
56int warnings_fatal = 0;
57int terse_version = 3;
58int is_backend = 0;
59int nr_clients = 0;
60int log_syslog = 0;
61
62int write_bw_log = 0;
63int read_only = 0;
64
65static int write_lat_log;
66
67static int prev_group_jobs;
68
69unsigned long fio_debug = 0;
70unsigned int fio_debug_jobno = -1;
71unsigned int *fio_debug_jobp = NULL;
72
73static char cmd_optstr[256];
74static int did_arg;
75
76const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
77	{ .u.f	=  1.0 },
78	{ .u.f	=  5.0 },
79	{ .u.f	= 10.0 },
80	{ .u.f	= 20.0 },
81	{ .u.f	= 30.0 },
82	{ .u.f	= 40.0 },
83	{ .u.f	= 50.0 },
84	{ .u.f	= 60.0 },
85	{ .u.f	= 70.0 },
86	{ .u.f	= 80.0 },
87	{ .u.f	= 90.0 },
88	{ .u.f	= 95.0 },
89	{ .u.f	= 99.0 },
90	{ .u.f	= 99.5 },
91	{ .u.f	= 99.9 },
92};
93
94#define FIO_CLIENT_FLAG		(1 << 16)
95
96/*
97 * Command line options. These will contain the above, plus a few
98 * extra that only pertain to fio itself and not jobs.
99 */
100static struct option l_opts[FIO_NR_OPTIONS] = {
101	{
102		.name		= (char *) "output",
103		.has_arg	= required_argument,
104		.val		= 'o' | FIO_CLIENT_FLAG,
105	},
106	{
107		.name		= (char *) "timeout",
108		.has_arg	= required_argument,
109		.val		= 't' | FIO_CLIENT_FLAG,
110	},
111	{
112		.name		= (char *) "latency-log",
113		.has_arg	= required_argument,
114		.val		= 'l' | FIO_CLIENT_FLAG,
115	},
116	{
117		.name		= (char *) "bandwidth-log",
118		.has_arg	= required_argument,
119		.val		= 'b' | FIO_CLIENT_FLAG,
120	},
121	{
122		.name		= (char *) "minimal",
123		.has_arg	= optional_argument,
124		.val		= 'm' | FIO_CLIENT_FLAG,
125	},
126	{
127		.name		= (char *) "version",
128		.has_arg	= no_argument,
129		.val		= 'v' | FIO_CLIENT_FLAG,
130	},
131	{
132		.name		= (char *) "help",
133		.has_arg	= no_argument,
134		.val		= 'h' | FIO_CLIENT_FLAG,
135	},
136	{
137		.name		= (char *) "cmdhelp",
138		.has_arg	= optional_argument,
139		.val		= 'c' | FIO_CLIENT_FLAG,
140	},
141	{
142		.name		   = (char *) "enghelp",
143		.has_arg	= optional_argument,
144		.val		    = 'i' | FIO_CLIENT_FLAG,
145	},
146	{
147		.name		= (char *) "showcmd",
148		.has_arg	= no_argument,
149		.val		= 's' | FIO_CLIENT_FLAG,
150	},
151	{
152		.name		= (char *) "readonly",
153		.has_arg	= no_argument,
154		.val		= 'r' | FIO_CLIENT_FLAG,
155	},
156	{
157		.name		= (char *) "eta",
158		.has_arg	= required_argument,
159		.val		= 'e' | FIO_CLIENT_FLAG,
160	},
161	{
162		.name		= (char *) "debug",
163		.has_arg	= required_argument,
164		.val		= 'd' | FIO_CLIENT_FLAG,
165	},
166	{
167		.name		= (char *) "section",
168		.has_arg	= required_argument,
169		.val		= 'x' | FIO_CLIENT_FLAG,
170	},
171	{
172		.name		= (char *) "alloc-size",
173		.has_arg	= required_argument,
174		.val		= 'a' | FIO_CLIENT_FLAG,
175	},
176	{
177		.name		= (char *) "profile",
178		.has_arg	= required_argument,
179		.val		= 'p' | FIO_CLIENT_FLAG,
180	},
181	{
182		.name		= (char *) "warnings-fatal",
183		.has_arg	= no_argument,
184		.val		= 'w' | FIO_CLIENT_FLAG,
185	},
186	{
187		.name		= (char *) "max-jobs",
188		.has_arg	= required_argument,
189		.val		= 'j' | FIO_CLIENT_FLAG,
190	},
191	{
192		.name		= (char *) "terse-version",
193		.has_arg	= required_argument,
194		.val		= 'V' | FIO_CLIENT_FLAG,
195	},
196	{
197		.name		= (char *) "server",
198		.has_arg	= optional_argument,
199		.val		= 'S',
200	},
201	{	.name		= (char *) "daemonize",
202		.has_arg	= required_argument,
203		.val		= 'D',
204	},
205	{
206		.name		= (char *) "client",
207		.has_arg	= required_argument,
208		.val		= 'C',
209	},
210	{
211		.name		= NULL,
212	},
213};
214
215static void free_shm(void)
216{
217	struct shmid_ds sbuf;
218
219	if (threads) {
220		void *tp = threads;
221
222		threads = NULL;
223		file_hash_exit();
224		flow_exit();
225		fio_debug_jobp = NULL;
226		shmdt(tp);
227		shmctl(shm_id, IPC_RMID, &sbuf);
228	}
229
230	scleanup();
231}
232
233/*
234 * The thread area is shared between the main process and the job
235 * threads/processes. So setup a shared memory segment that will hold
236 * all the job info. We use the end of the region for keeping track of
237 * open files across jobs, for file sharing.
238 */
239static int setup_thread_area(void)
240{
241	void *hash;
242
243	if (threads)
244		return 0;
245
246	/*
247	 * 1024 is too much on some machines, scale max_jobs if
248	 * we get a failure that looks like too large a shm segment
249	 */
250	do {
251		size_t size = max_jobs * sizeof(struct thread_data);
252
253		size += file_hash_size;
254		size += sizeof(unsigned int);
255
256		shm_id = shmget(0, size, IPC_CREAT | 0600);
257		if (shm_id != -1)
258			break;
259		if (errno != EINVAL && errno != ENOMEM) {
260			perror("shmget");
261			break;
262		}
263
264		max_jobs >>= 1;
265	} while (max_jobs);
266
267	if (shm_id == -1)
268		return 1;
269
270	threads = shmat(shm_id, NULL, 0);
271	if (threads == (void *) -1) {
272		perror("shmat");
273		return 1;
274	}
275
276	memset(threads, 0, max_jobs * sizeof(struct thread_data));
277	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
278	fio_debug_jobp = (void *) hash + file_hash_size;
279	*fio_debug_jobp = -1;
280	file_hash_init(hash);
281
282	flow_init();
283
284	return 0;
285}
286
287/*
288 * Return a free job structure.
289 */
290static struct thread_data *get_new_job(int global, struct thread_data *parent,
291				       int preserve_eo)
292{
293	struct thread_data *td;
294
295	if (global)
296		return &def_thread;
297	if (setup_thread_area()) {
298		log_err("error: failed to setup shm segment\n");
299		return NULL;
300	}
301	if (thread_number >= max_jobs) {
302		log_err("error: maximum number of jobs (%d) reached.\n",
303				max_jobs);
304		return NULL;
305	}
306
307	td = &threads[thread_number++];
308	*td = *parent;
309
310	td->io_ops = NULL;
311	if (!preserve_eo)
312		td->eo = NULL;
313
314	td->o.uid = td->o.gid = -1U;
315
316	dup_files(td, parent);
317	fio_options_mem_dupe(td);
318
319	profile_add_hooks(td);
320
321	td->thread_number = thread_number;
322	return td;
323}
324
325static void put_job(struct thread_data *td)
326{
327	if (td == &def_thread)
328		return;
329
330	profile_td_exit(td);
331	flow_exit_job(td);
332
333	if (td->error)
334		log_info("fio: %s\n", td->verror);
335
336	fio_options_free(td);
337	if (td->io_ops)
338		free_ioengine(td);
339
340	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
341	thread_number--;
342}
343
344static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
345{
346	unsigned int bs = td->o.min_bs[ddir];
347
348	assert(ddir_rw(ddir));
349
350	if (td->o.rate[ddir])
351		td->rate_bps[ddir] = td->o.rate[ddir];
352	else
353		td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
354
355	if (!td->rate_bps[ddir]) {
356		log_err("rate lower than supported\n");
357		return -1;
358	}
359
360	td->rate_pending_usleep[ddir] = 0;
361	return 0;
362}
363
364static int setup_rate(struct thread_data *td)
365{
366	int ret = 0;
367
368	if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
369		ret = __setup_rate(td, DDIR_READ);
370	if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
371		ret |= __setup_rate(td, DDIR_WRITE);
372
373	return ret;
374}
375
376static int fixed_block_size(struct thread_options *o)
377{
378	return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
379		o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
380		o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
381}
382
383/*
384 * Lazy way of fixing up options that depend on each other. We could also
385 * define option callback handlers, but this is easier.
386 */
387static int fixup_options(struct thread_data *td)
388{
389	struct thread_options *o = &td->o;
390	int ret = 0;
391
392#ifndef FIO_HAVE_PSHARED_MUTEX
393	if (!o->use_thread) {
394		log_info("fio: this platform does not support process shared"
395			 " mutexes, forcing use of threads. Use the 'thread'"
396			 " option to get rid of this warning.\n");
397		o->use_thread = 1;
398		ret = warnings_fatal;
399	}
400#endif
401
402	if (o->write_iolog_file && o->read_iolog_file) {
403		log_err("fio: read iolog overrides write_iolog\n");
404		free(o->write_iolog_file);
405		o->write_iolog_file = NULL;
406		ret = warnings_fatal;
407	}
408
409	/*
410	 * only really works with 1 file
411	 */
412	if (o->zone_size && o->open_files == 1)
413		o->zone_size = 0;
414
415	/*
416	 * If zone_range isn't specified, backward compatibility dictates it
417	 * should be made equal to zone_size.
418	 */
419	if (o->zone_size && !o->zone_range)
420		o->zone_range = o->zone_size;
421
422	/*
423	 * Reads can do overwrites, we always need to pre-create the file
424	 */
425	if (td_read(td) || td_rw(td))
426		o->overwrite = 1;
427
428	if (!o->min_bs[DDIR_READ])
429		o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
430	if (!o->max_bs[DDIR_READ])
431		o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
432	if (!o->min_bs[DDIR_WRITE])
433		o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
434	if (!o->max_bs[DDIR_WRITE])
435		o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
436
437	o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
438
439	/*
440	 * For random IO, allow blockalign offset other than min_bs.
441	 */
442	if (!o->ba[DDIR_READ] || !td_random(td))
443		o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
444	if (!o->ba[DDIR_WRITE] || !td_random(td))
445		o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
446
447	if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
448	    o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
449	    !o->norandommap) {
450		log_err("fio: Any use of blockalign= turns off randommap\n");
451		o->norandommap = 1;
452		ret = warnings_fatal;
453	}
454
455	if (!o->file_size_high)
456		o->file_size_high = o->file_size_low;
457
458	if (o->norandommap && o->verify != VERIFY_NONE
459	    && !fixed_block_size(o))  {
460		log_err("fio: norandommap given for variable block sizes, "
461			"verify disabled\n");
462		o->verify = VERIFY_NONE;
463		ret = warnings_fatal;
464	}
465	if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
466		log_err("fio: bs_unaligned may not work with raw io\n");
467
468	/*
469	 * thinktime_spin must be less than thinktime
470	 */
471	if (o->thinktime_spin > o->thinktime)
472		o->thinktime_spin = o->thinktime;
473
474	/*
475	 * The low water mark cannot be bigger than the iodepth
476	 */
477	if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
478		/*
479		 * syslet work around - if the workload is sequential,
480		 * we want to let the queue drain all the way down to
481		 * avoid seeking between async threads
482		 */
483		if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
484			o->iodepth_low = 1;
485		else
486			o->iodepth_low = o->iodepth;
487	}
488
489	/*
490	 * If batch number isn't set, default to the same as iodepth
491	 */
492	if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
493		o->iodepth_batch = o->iodepth;
494
495	if (o->nr_files > td->files_index)
496		o->nr_files = td->files_index;
497
498	if (o->open_files > o->nr_files || !o->open_files)
499		o->open_files = o->nr_files;
500
501	if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
502	    ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
503		o->rate_iops_min[1]))) {
504		log_err("fio: rate and rate_iops are mutually exclusive\n");
505		ret = 1;
506	}
507	if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
508	    (o->rate_iops[0] < o->rate_iops_min[0]) ||
509	    (o->rate_iops[1] < o->rate_iops_min[1])) {
510		log_err("fio: minimum rate exceeds rate\n");
511		ret = 1;
512	}
513
514	if (!o->timeout && o->time_based) {
515		log_err("fio: time_based requires a runtime/timeout setting\n");
516		o->time_based = 0;
517		ret = warnings_fatal;
518	}
519
520	if (o->fill_device && !o->size)
521		o->size = -1ULL;
522
523	if (o->verify != VERIFY_NONE) {
524		if (td_write(td) && o->do_verify && o->numjobs > 1) {
525			log_info("Multiple writers may overwrite blocks that "
526				"belong to other jobs. This can cause "
527				"verification failures.\n");
528			ret = warnings_fatal;
529		}
530
531		o->refill_buffers = 1;
532		if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
533		    !o->verify_interval)
534			o->verify_interval = o->min_bs[DDIR_WRITE];
535	}
536
537	if (o->pre_read) {
538		o->invalidate_cache = 0;
539		if (td->io_ops->flags & FIO_PIPEIO) {
540			log_info("fio: cannot pre-read files with an IO engine"
541				 " that isn't seekable. Pre-read disabled.\n");
542			ret = warnings_fatal;
543		}
544	}
545
546#ifndef FIO_HAVE_FDATASYNC
547	if (o->fdatasync_blocks) {
548		log_info("fio: this platform does not support fdatasync()"
549			 " falling back to using fsync().  Use the 'fsync'"
550			 " option instead of 'fdatasync' to get rid of"
551			 " this warning\n");
552		o->fsync_blocks = o->fdatasync_blocks;
553		o->fdatasync_blocks = 0;
554		ret = warnings_fatal;
555	}
556#endif
557
558#ifdef WIN32
559	/*
560	 * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
561	 * so fail if we're passed those flags
562	 */
563	if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
564		log_err("fio: Windows does not support direct or non-buffered io with"
565				" the synchronous ioengines. Use the 'windowsaio' ioengine"
566				" with 'direct=1' and 'iodepth=1' instead.\n");
567		ret = 1;
568	}
569#endif
570
571	return ret;
572}
573
574/*
575 * This function leaks the buffer
576 */
577static char *to_kmg(unsigned int val)
578{
579	char *buf = malloc(32);
580	char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
581	char *p = post;
582
583	do {
584		if (val & 1023)
585			break;
586
587		val >>= 10;
588		p++;
589	} while (*p);
590
591	snprintf(buf, 31, "%u%c", val, *p);
592	return buf;
593}
594
595/* External engines are specified by "external:name.o") */
596static const char *get_engine_name(const char *str)
597{
598	char *p = strstr(str, ":");
599
600	if (!p)
601		return str;
602
603	p++;
604	strip_blank_front(&p);
605	strip_blank_end(p);
606	return p;
607}
608
609static int exists_and_not_file(const char *filename)
610{
611	struct stat sb;
612
613	if (lstat(filename, &sb) == -1)
614		return 0;
615
616	/* \\.\ is the device namespace in Windows, where every file
617	 * is a device node */
618	if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
619		return 0;
620
621	return 1;
622}
623
624static void td_fill_rand_seeds_os(struct thread_data *td)
625{
626	os_random_seed(td->rand_seeds[0], &td->bsrange_state);
627	os_random_seed(td->rand_seeds[1], &td->verify_state);
628	os_random_seed(td->rand_seeds[2], &td->rwmix_state);
629
630	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
631		os_random_seed(td->rand_seeds[3], &td->next_file_state);
632
633	os_random_seed(td->rand_seeds[5], &td->file_size_state);
634	os_random_seed(td->rand_seeds[6], &td->trim_state);
635
636	if (!td_random(td))
637		return;
638
639	if (td->o.rand_repeatable)
640		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
641
642	os_random_seed(td->rand_seeds[4], &td->random_state);
643}
644
645static void td_fill_rand_seeds_internal(struct thread_data *td)
646{
647	init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
648	init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
649	init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
650
651	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
652		init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
653
654	init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
655	init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
656
657	if (!td_random(td))
658		return;
659
660	if (td->o.rand_repeatable)
661		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
662
663	init_rand_seed(&td->__random_state, td->rand_seeds[4]);
664}
665
666void td_fill_rand_seeds(struct thread_data *td)
667{
668	if (td->o.use_os_rand)
669		td_fill_rand_seeds_os(td);
670	else
671		td_fill_rand_seeds_internal(td);
672
673	init_rand_seed(&td->buf_state, td->rand_seeds[7]);
674}
675
676
677/*
678 * Initializes the ioengine configured for a job, if it has not been done so
679 * already.
680 */
681int ioengine_load(struct thread_data *td)
682{
683	const char *engine;
684
685	/*
686	 * Engine has already been loaded.
687	 */
688	if (td->io_ops)
689		return 0;
690
691	engine = get_engine_name(td->o.ioengine);
692	td->io_ops = load_ioengine(td, engine);
693	if (!td->io_ops) {
694		log_err("fio: failed to load engine %s\n", engine);
695		return 1;
696	}
697
698	if (td->io_ops->option_struct_size && td->io_ops->options) {
699		/*
700		 * In cases where td->eo is set, clone it for a child thread.
701		 * This requires that the parent thread has the same ioengine,
702		 * but that requirement must be enforced by the code which
703		 * cloned the thread.
704		 */
705		void *origeo = td->eo;
706		/*
707		 * Otherwise use the default thread options.
708		 */
709		if (!origeo && td != &def_thread && def_thread.eo &&
710		    def_thread.io_ops->options == td->io_ops->options)
711			origeo = def_thread.eo;
712
713		options_init(td->io_ops->options);
714		td->eo = malloc(td->io_ops->option_struct_size);
715		/*
716		 * Use the default thread as an option template if this uses the
717		 * same options structure and there are non-default options
718		 * used.
719		 */
720		if (origeo) {
721			memcpy(td->eo, origeo, td->io_ops->option_struct_size);
722			options_mem_dupe(td->eo, td->io_ops->options);
723		} else {
724			memset(td->eo, 0, td->io_ops->option_struct_size);
725			fill_default_options(td->eo, td->io_ops->options);
726		}
727		*(struct thread_data **)td->eo = td;
728	}
729
730	return 0;
731}
732
733/*
734 * Adds a job to the list of things todo. Sanitizes the various options
735 * to make sure we don't have conflicts, and initializes various
736 * members of td.
737 */
738static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
739{
740	const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
741				   "randread", "randwrite", "randrw" };
742	unsigned int i;
743	char fname[PATH_MAX];
744	int numjobs, file_alloced;
745
746	/*
747	 * the def_thread is just for options, it's not a real job
748	 */
749	if (td == &def_thread)
750		return 0;
751
752	/*
753	 * if we are just dumping the output command line, don't add the job
754	 */
755	if (dump_cmdline) {
756		put_job(td);
757		return 0;
758	}
759
760	if (profile_td_init(td))
761		goto err;
762
763	if (ioengine_load(td))
764		goto err;
765
766	if (td->o.use_thread)
767		nr_thread++;
768	else
769		nr_process++;
770
771	if (td->o.odirect)
772		td->io_ops->flags |= FIO_RAWIO;
773
774	file_alloced = 0;
775	if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
776		file_alloced = 1;
777
778		if (td->o.nr_files == 1 && exists_and_not_file(jobname))
779			add_file(td, jobname);
780		else {
781			for (i = 0; i < td->o.nr_files; i++) {
782				sprintf(fname, "%s.%d.%d", jobname,
783							td->thread_number, i);
784				add_file(td, fname);
785			}
786		}
787	}
788
789	if (fixup_options(td))
790		goto err;
791
792	flow_init_job(td);
793
794	/*
795	 * IO engines only need this for option callbacks, and the address may
796	 * change in subprocesses.
797	 */
798	if (td->eo)
799		*(struct thread_data **)td->eo = NULL;
800
801	if (td->io_ops->flags & FIO_DISKLESSIO) {
802		struct fio_file *f;
803
804		for_each_file(td, f, i)
805			f->real_file_size = -1ULL;
806	}
807
808	td->mutex = fio_mutex_init(0);
809
810	td->ts.clat_percentiles = td->o.clat_percentiles;
811	if (td->o.overwrite_plist)
812		memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
813	else
814		memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
815
816	td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
817	td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
818	td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
819	td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
820	td->ddir_seq_nr = td->o.ddir_seq_nr;
821
822	if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
823		prev_group_jobs = 0;
824		groupid++;
825	}
826
827	td->groupid = groupid;
828	prev_group_jobs++;
829
830	if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
831		td_verror(td, errno, "init_random_state");
832		goto err;
833	}
834
835	if (setup_rate(td))
836		goto err;
837
838	if (td->o.write_lat_log) {
839		setup_log(&td->lat_log, td->o.log_avg_msec);
840		setup_log(&td->slat_log, td->o.log_avg_msec);
841		setup_log(&td->clat_log, td->o.log_avg_msec);
842	}
843	if (td->o.write_bw_log)
844		setup_log(&td->bw_log, td->o.log_avg_msec);
845	if (td->o.write_iops_log)
846		setup_log(&td->iops_log, td->o.log_avg_msec);
847
848	if (!td->o.name)
849		td->o.name = strdup(jobname);
850
851	if (!terse_output) {
852		if (!job_add_num) {
853			if (!strcmp(td->io_ops->name, "cpuio")) {
854				log_info("%s: ioengine=cpu, cpuload=%u,"
855					 " cpucycle=%u\n", td->o.name,
856							td->o.cpuload,
857							td->o.cpucycle);
858			} else {
859				char *c1, *c2, *c3, *c4;
860
861				c1 = to_kmg(td->o.min_bs[DDIR_READ]);
862				c2 = to_kmg(td->o.max_bs[DDIR_READ]);
863				c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
864				c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
865
866				log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
867					 " ioengine=%s, iodepth=%u\n",
868						td->o.name, td->groupid,
869						ddir_str[td->o.td_ddir],
870						c1, c2, c3, c4,
871						td->io_ops->name,
872						td->o.iodepth);
873
874				free(c1);
875				free(c2);
876				free(c3);
877				free(c4);
878			}
879		} else if (job_add_num == 1)
880			log_info("...\n");
881	}
882
883	/*
884	 * recurse add identical jobs, clear numjobs and stonewall options
885	 * as they don't apply to sub-jobs
886	 */
887	numjobs = td->o.numjobs;
888	while (--numjobs) {
889		struct thread_data *td_new = get_new_job(0, td, 1);
890
891		if (!td_new)
892			goto err;
893
894		td_new->o.numjobs = 1;
895		td_new->o.stonewall = 0;
896		td_new->o.new_group = 0;
897
898		if (file_alloced) {
899			td_new->o.filename = NULL;
900			td_new->files_index = 0;
901			td_new->files_size = 0;
902			td_new->files = NULL;
903		}
904
905		job_add_num = numjobs - 1;
906
907		if (add_job(td_new, jobname, job_add_num))
908			goto err;
909	}
910
911	return 0;
912err:
913	put_job(td);
914	return -1;
915}
916
917/*
918 * Parse as if 'o' was a command line
919 */
920void add_job_opts(const char **o)
921{
922	struct thread_data *td, *td_parent;
923	int i, in_global = 1;
924	char jobname[32];
925
926	i = 0;
927	td_parent = td = NULL;
928	while (o[i]) {
929		if (!strncmp(o[i], "name", 4)) {
930			in_global = 0;
931			if (td)
932				add_job(td, jobname, 0);
933			td = NULL;
934			sprintf(jobname, "%s", o[i] + 5);
935		}
936		if (in_global && !td_parent)
937			td_parent = get_new_job(1, &def_thread, 0);
938		else if (!in_global && !td) {
939			if (!td_parent)
940				td_parent = &def_thread;
941			td = get_new_job(0, td_parent, 0);
942		}
943		if (in_global)
944			fio_options_parse(td_parent, (char **) &o[i], 1);
945		else
946			fio_options_parse(td, (char **) &o[i], 1);
947		i++;
948	}
949
950	if (td)
951		add_job(td, jobname, 0);
952}
953
954static int skip_this_section(const char *name)
955{
956	int i;
957
958	if (!nr_job_sections)
959		return 0;
960	if (!strncmp(name, "global", 6))
961		return 0;
962
963	for (i = 0; i < nr_job_sections; i++)
964		if (!strcmp(job_sections[i], name))
965			return 0;
966
967	return 1;
968}
969
970static int is_empty_or_comment(char *line)
971{
972	unsigned int i;
973
974	for (i = 0; i < strlen(line); i++) {
975		if (line[i] == ';')
976			return 1;
977		if (line[i] == '#')
978			return 1;
979		if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
980			return 0;
981	}
982
983	return 1;
984}
985
986/*
987 * This is our [ini] type file parser.
988 */
989int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
990{
991	unsigned int global;
992	struct thread_data *td;
993	char *string, *name;
994	FILE *f;
995	char *p;
996	int ret = 0, stonewall;
997	int first_sect = 1;
998	int skip_fgets = 0;
999	int inside_skip = 0;
1000	char **opts;
1001	int i, alloc_opts, num_opts;
1002
1003	if (is_buf)
1004		f = NULL;
1005	else {
1006		if (!strcmp(file, "-"))
1007			f = stdin;
1008		else
1009			f = fopen(file, "r");
1010
1011		if (!f) {
1012			perror("fopen job file");
1013			return 1;
1014		}
1015	}
1016
1017	string = malloc(4096);
1018
1019	/*
1020	 * it's really 256 + small bit, 280 should suffice
1021	 */
1022	name = malloc(280);
1023	memset(name, 0, 280);
1024
1025	alloc_opts = 8;
1026	opts = malloc(sizeof(char *) * alloc_opts);
1027	num_opts = 0;
1028
1029	stonewall = stonewall_flag;
1030	do {
1031		/*
1032		 * if skip_fgets is set, we already have loaded a line we
1033		 * haven't handled.
1034		 */
1035		if (!skip_fgets) {
1036			if (is_buf)
1037				p = strsep(&file, "\n");
1038			else
1039				p = fgets(string, 4096, f);
1040			if (!p)
1041				break;
1042		}
1043
1044		skip_fgets = 0;
1045		strip_blank_front(&p);
1046		strip_blank_end(p);
1047
1048		if (is_empty_or_comment(p))
1049			continue;
1050		if (sscanf(p, "[%255[^\n]]", name) != 1) {
1051			if (inside_skip)
1052				continue;
1053			log_err("fio: option <%s> outside of [] job section\n",
1054									p);
1055			break;
1056		}
1057
1058		name[strlen(name) - 1] = '\0';
1059
1060		if (skip_this_section(name)) {
1061			inside_skip = 1;
1062			continue;
1063		} else
1064			inside_skip = 0;
1065
1066		global = !strncmp(name, "global", 6);
1067
1068		if (dump_cmdline) {
1069			if (first_sect)
1070				log_info("fio ");
1071			if (!global)
1072				log_info("--name=%s ", name);
1073			first_sect = 0;
1074		}
1075
1076		td = get_new_job(global, &def_thread, 0);
1077		if (!td) {
1078			ret = 1;
1079			break;
1080		}
1081
1082		/*
1083		 * Seperate multiple job files by a stonewall
1084		 */
1085		if (!global && stonewall) {
1086			td->o.stonewall = stonewall;
1087			stonewall = 0;
1088		}
1089
1090		num_opts = 0;
1091		memset(opts, 0, alloc_opts * sizeof(char *));
1092
1093		while (1) {
1094			if (is_buf)
1095				p = strsep(&file, "\n");
1096			else
1097				p = fgets(string, 4096, f);
1098			if (!p)
1099				break;
1100
1101			if (is_empty_or_comment(p))
1102				continue;
1103
1104			strip_blank_front(&p);
1105
1106			/*
1107			 * new section, break out and make sure we don't
1108			 * fgets() a new line at the top.
1109			 */
1110			if (p[0] == '[') {
1111				skip_fgets = 1;
1112				break;
1113			}
1114
1115			strip_blank_end(p);
1116
1117			if (num_opts == alloc_opts) {
1118				alloc_opts <<= 1;
1119				opts = realloc(opts,
1120						alloc_opts * sizeof(char *));
1121			}
1122
1123			opts[num_opts] = strdup(p);
1124			num_opts++;
1125		}
1126
1127		ret = fio_options_parse(td, opts, num_opts);
1128		if (!ret) {
1129			if (dump_cmdline)
1130				for (i = 0; i < num_opts; i++)
1131					log_info("--%s ", opts[i]);
1132
1133			ret = add_job(td, name, 0);
1134		} else {
1135			log_err("fio: job %s dropped\n", name);
1136			put_job(td);
1137		}
1138
1139		for (i = 0; i < num_opts; i++)
1140			free(opts[i]);
1141		num_opts = 0;
1142	} while (!ret);
1143
1144	if (dump_cmdline)
1145		log_info("\n");
1146
1147	i = 0;
1148	while (i < nr_job_sections) {
1149		free(job_sections[i]);
1150		i++;
1151	}
1152
1153	for (i = 0; i < num_opts; i++)
1154		free(opts[i]);
1155
1156	free(string);
1157	free(name);
1158	free(opts);
1159	if (!is_buf && f != stdin)
1160		fclose(f);
1161	return ret;
1162}
1163
1164static int fill_def_thread(void)
1165{
1166	memset(&def_thread, 0, sizeof(def_thread));
1167
1168	fio_getaffinity(getpid(), &def_thread.o.cpumask);
1169	def_thread.o.timeout = def_timeout;
1170
1171	/*
1172	 * fill default options
1173	 */
1174	fio_fill_default_options(&def_thread);
1175	return 0;
1176}
1177
1178static void usage(const char *name)
1179{
1180	printf("fio %s\n", fio_version_string);
1181	printf("%s [options] [job options] <job file(s)>\n", name);
1182	printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1183		"\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1184		"\t\t\tdiskutil,job,mutex,profile,time,net\n");
1185	printf("  --output\t\tWrite output to file\n");
1186	printf("  --timeout\t\tRuntime in seconds\n");
1187	printf("  --latency-log\t\tGenerate per-job latency logs\n");
1188	printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1189	printf("  --minimal\t\tMinimal (terse) output\n");
1190	printf("  --version\t\tPrint version info and exit\n");
1191	printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1192	printf("  --help\t\tPrint this page\n");
1193	printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1194		" them\n");
1195	printf("  --enghelp=engine\tPrint ioengine help, or list"
1196		" available ioengines\n");
1197	printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1198		" cmd\n");
1199	printf("  --showcmd\t\tTurn a job file into command line options\n");
1200	printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1201	printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1202	printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1203		" writes\n");
1204	printf("  --section=name\tOnly run specified section in job file\n");
1205	printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1206		" (def 1024)\n");
1207	printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1208	printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1209	printf("  --server=args\t\tStart a backend fio server\n");
1210	printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1211	printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1212	printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1213	printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1214}
1215
1216#ifdef FIO_INC_DEBUG
1217struct debug_level debug_levels[] = {
1218	{ .name = "process",	.shift = FD_PROCESS, },
1219	{ .name = "file",	.shift = FD_FILE, },
1220	{ .name = "io",		.shift = FD_IO, },
1221	{ .name = "mem",	.shift = FD_MEM, },
1222	{ .name = "blktrace",	.shift = FD_BLKTRACE },
1223	{ .name = "verify",	.shift = FD_VERIFY },
1224	{ .name = "random",	.shift = FD_RANDOM },
1225	{ .name = "parse",	.shift = FD_PARSE },
1226	{ .name = "diskutil",	.shift = FD_DISKUTIL },
1227	{ .name = "job",	.shift = FD_JOB },
1228	{ .name = "mutex",	.shift = FD_MUTEX },
1229	{ .name	= "profile",	.shift = FD_PROFILE },
1230	{ .name = "time",	.shift = FD_TIME },
1231	{ .name = "net",	.shift = FD_NET },
1232	{ .name = NULL, },
1233};
1234
1235static int set_debug(const char *string)
1236{
1237	struct debug_level *dl;
1238	char *p = (char *) string;
1239	char *opt;
1240	int i;
1241
1242	if (!strcmp(string, "?") || !strcmp(string, "help")) {
1243		log_info("fio: dumping debug options:");
1244		for (i = 0; debug_levels[i].name; i++) {
1245			dl = &debug_levels[i];
1246			log_info("%s,", dl->name);
1247		}
1248		log_info("all\n");
1249		return 1;
1250	}
1251
1252	while ((opt = strsep(&p, ",")) != NULL) {
1253		int found = 0;
1254
1255		if (!strncmp(opt, "all", 3)) {
1256			log_info("fio: set all debug options\n");
1257			fio_debug = ~0UL;
1258			continue;
1259		}
1260
1261		for (i = 0; debug_levels[i].name; i++) {
1262			dl = &debug_levels[i];
1263			found = !strncmp(opt, dl->name, strlen(dl->name));
1264			if (!found)
1265				continue;
1266
1267			if (dl->shift == FD_JOB) {
1268				opt = strchr(opt, ':');
1269				if (!opt) {
1270					log_err("fio: missing job number\n");
1271					break;
1272				}
1273				opt++;
1274				fio_debug_jobno = atoi(opt);
1275				log_info("fio: set debug jobno %d\n",
1276							fio_debug_jobno);
1277			} else {
1278				log_info("fio: set debug option %s\n", opt);
1279				fio_debug |= (1UL << dl->shift);
1280			}
1281			break;
1282		}
1283
1284		if (!found)
1285			log_err("fio: debug mask %s not found\n", opt);
1286	}
1287	return 0;
1288}
1289#else
1290static int set_debug(const char *string)
1291{
1292	log_err("fio: debug tracing not included in build\n");
1293	return 1;
1294}
1295#endif
1296
1297static void fio_options_fill_optstring(void)
1298{
1299	char *ostr = cmd_optstr;
1300	int i, c;
1301
1302	c = i = 0;
1303	while (l_opts[i].name) {
1304		ostr[c++] = l_opts[i].val;
1305		if (l_opts[i].has_arg == required_argument)
1306			ostr[c++] = ':';
1307		else if (l_opts[i].has_arg == optional_argument) {
1308			ostr[c++] = ':';
1309			ostr[c++] = ':';
1310		}
1311		i++;
1312	}
1313	ostr[c] = '\0';
1314}
1315
1316static int client_flag_set(char c)
1317{
1318	int i;
1319
1320	i = 0;
1321	while (l_opts[i].name) {
1322		int val = l_opts[i].val;
1323
1324		if (c == (val & 0xff))
1325			return (val & FIO_CLIENT_FLAG);
1326
1327		i++;
1328	}
1329
1330	return 0;
1331}
1332
1333void parse_cmd_client(void *client, char *opt)
1334{
1335	fio_client_add_cmd_option(client, opt);
1336}
1337
1338int parse_cmd_line(int argc, char *argv[])
1339{
1340	struct thread_data *td = NULL;
1341	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1342	char *ostr = cmd_optstr;
1343	void *pid_file = NULL;
1344	void *cur_client = NULL;
1345	int backend = 0;
1346
1347	/*
1348	 * Reset optind handling, since we may call this multiple times
1349	 * for the backend.
1350	 */
1351	optind = 1;
1352
1353	while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1354		did_arg = 1;
1355
1356		if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1357			parse_cmd_client(cur_client, argv[optind - 1]);
1358			c &= ~FIO_CLIENT_FLAG;
1359		}
1360
1361		switch (c) {
1362		case 'a':
1363			smalloc_pool_size = atoi(optarg);
1364			break;
1365		case 't':
1366			def_timeout = atoi(optarg);
1367			break;
1368		case 'l':
1369			write_lat_log = 1;
1370			break;
1371		case 'b':
1372			write_bw_log = 1;
1373			break;
1374		case 'o':
1375			f_out = fopen(optarg, "w+");
1376			if (!f_out) {
1377				perror("fopen output");
1378				exit(1);
1379			}
1380			f_err = f_out;
1381			break;
1382		case 'm':
1383			terse_output = 1;
1384			break;
1385		case 'h':
1386			if (!cur_client) {
1387				usage(argv[0]);
1388				do_exit++;
1389			}
1390			break;
1391		case 'c':
1392			if (!cur_client) {
1393				fio_show_option_help(optarg);
1394				do_exit++;
1395			}
1396			break;
1397		case 'i':
1398			if (!cur_client) {
1399				fio_show_ioengine_help(optarg);
1400				do_exit++;
1401			}
1402			break;
1403		case 's':
1404			dump_cmdline = 1;
1405			break;
1406		case 'r':
1407			read_only = 1;
1408			break;
1409		case 'v':
1410			if (!cur_client) {
1411				log_info("fio %s\n", fio_version_string);
1412				do_exit++;
1413			}
1414			break;
1415		case 'V':
1416			terse_version = atoi(optarg);
1417			if (!(terse_version == 2 || terse_version == 3)) {
1418				log_err("fio: bad terse version format\n");
1419				exit_val = 1;
1420				do_exit++;
1421			}
1422			break;
1423		case 'e':
1424			if (!strcmp("always", optarg))
1425				eta_print = FIO_ETA_ALWAYS;
1426			else if (!strcmp("never", optarg))
1427				eta_print = FIO_ETA_NEVER;
1428			break;
1429		case 'd':
1430			if (set_debug(optarg))
1431				do_exit++;
1432			break;
1433		case 'x': {
1434			size_t new_size;
1435
1436			if (!strcmp(optarg, "global")) {
1437				log_err("fio: can't use global as only "
1438					"section\n");
1439				do_exit++;
1440				exit_val = 1;
1441				break;
1442			}
1443			new_size = (nr_job_sections + 1) * sizeof(char *);
1444			job_sections = realloc(job_sections, new_size);
1445			job_sections[nr_job_sections] = strdup(optarg);
1446			nr_job_sections++;
1447			break;
1448			}
1449		case 'p':
1450			exec_profile = strdup(optarg);
1451			break;
1452		case FIO_GETOPT_JOB: {
1453			const char *opt = l_opts[lidx].name;
1454			char *val = optarg;
1455
1456			if (!strncmp(opt, "name", 4) && td) {
1457				ret = add_job(td, td->o.name ?: "fio", 0);
1458				if (ret)
1459					return 0;
1460				td = NULL;
1461			}
1462			if (!td) {
1463				int is_section = !strncmp(opt, "name", 4);
1464				int global = 0;
1465
1466				if (!is_section || !strncmp(val, "global", 6))
1467					global = 1;
1468
1469				if (is_section && skip_this_section(val))
1470					continue;
1471
1472				td = get_new_job(global, &def_thread, 1);
1473				if (!td || ioengine_load(td))
1474					return 0;
1475				fio_options_set_ioengine_opts(l_opts, td);
1476			}
1477
1478			ret = fio_cmd_option_parse(td, opt, val);
1479
1480			if (!ret && !strcmp(opt, "ioengine")) {
1481				free_ioengine(td);
1482				if (ioengine_load(td))
1483					return 0;
1484				fio_options_set_ioengine_opts(l_opts, td);
1485			}
1486			break;
1487		}
1488		case FIO_GETOPT_IOENGINE: {
1489			const char *opt = l_opts[lidx].name;
1490			char *val = optarg;
1491			opt = l_opts[lidx].name;
1492			val = optarg;
1493			ret = fio_cmd_ioengine_option_parse(td, opt, val);
1494			break;
1495		}
1496		case 'w':
1497			warnings_fatal = 1;
1498			break;
1499		case 'j':
1500			max_jobs = atoi(optarg);
1501			if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1502				log_err("fio: invalid max jobs: %d\n", max_jobs);
1503				do_exit++;
1504				exit_val = 1;
1505			}
1506			break;
1507		case 'S':
1508			if (nr_clients) {
1509				log_err("fio: can't be both client and server\n");
1510				do_exit++;
1511				exit_val = 1;
1512				break;
1513			}
1514			if (optarg)
1515				fio_server_set_arg(optarg);
1516			is_backend = 1;
1517			backend = 1;
1518			break;
1519		case 'D':
1520			pid_file = strdup(optarg);
1521			break;
1522		case 'C':
1523			if (is_backend) {
1524				log_err("fio: can't be both client and server\n");
1525				do_exit++;
1526				exit_val = 1;
1527				break;
1528			}
1529			if (fio_client_add(optarg, &cur_client)) {
1530				log_err("fio: failed adding client %s\n", optarg);
1531				do_exit++;
1532				exit_val = 1;
1533				break;
1534			}
1535			break;
1536		default:
1537			do_exit++;
1538			exit_val = 1;
1539			break;
1540		}
1541		if (do_exit)
1542			break;
1543	}
1544
1545	if (do_exit) {
1546		if (exit_val && !(is_backend || nr_clients))
1547			exit(exit_val);
1548	}
1549
1550	if (nr_clients && fio_clients_connect()) {
1551		do_exit++;
1552		exit_val = 1;
1553		return -1;
1554	}
1555
1556	if (is_backend && backend)
1557		return fio_start_server(pid_file);
1558
1559	if (td) {
1560		if (!ret)
1561			ret = add_job(td, td->o.name ?: "fio", 0);
1562	}
1563
1564	while (!ret && optind < argc) {
1565		ini_idx++;
1566		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1567		ini_file[ini_idx - 1] = strdup(argv[optind]);
1568		optind++;
1569	}
1570
1571	return ini_idx;
1572}
1573
1574int fio_init_options(void)
1575{
1576	f_out = stdout;
1577	f_err = stderr;
1578
1579	fio_options_fill_optstring();
1580	fio_options_dup_and_init(l_opts);
1581
1582	atexit(free_shm);
1583
1584	if (fill_def_thread())
1585		return 1;
1586
1587	return 0;
1588}
1589
1590int parse_options(int argc, char *argv[])
1591{
1592	int job_files, i;
1593
1594	if (fio_init_options())
1595		return 1;
1596
1597	job_files = parse_cmd_line(argc, argv);
1598
1599	if (job_files > 0) {
1600		for (i = 0; i < job_files; i++) {
1601			if (fill_def_thread())
1602				return 1;
1603			if (nr_clients) {
1604				if (fio_clients_send_ini(ini_file[i]))
1605					return 1;
1606				free(ini_file[i]);
1607			} else if (!is_backend) {
1608				if (parse_jobs_ini(ini_file[i], 0, i))
1609					return 1;
1610				free(ini_file[i]);
1611			}
1612		}
1613	}
1614
1615	free(ini_file);
1616	fio_options_free(&def_thread);
1617
1618	if (!thread_number) {
1619		if (dump_cmdline)
1620			return 0;
1621		if (exec_profile)
1622			return 0;
1623		if (is_backend || nr_clients)
1624			return 0;
1625		if (did_arg)
1626			return 0;
1627
1628		log_err("No jobs(s) defined\n\n");
1629
1630		if (!did_arg) {
1631			usage(argv[0]);
1632			return 1;
1633		}
1634
1635		return 0;
1636	}
1637
1638	if (def_thread.o.gtod_offload) {
1639		fio_gtod_init();
1640		fio_gtod_offload = 1;
1641		fio_gtod_cpu = def_thread.o.gtod_cpu;
1642	}
1643
1644	if (!terse_output)
1645		log_info("fio %s\n", fio_version_string);
1646
1647	return 0;
1648}
1649