init.c revision 812409e9486a37ba2f51e6e23c97e6ae8e26ff9a 
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	=  1.00 },
78	{ .u.f	=  5.00 },
79	{ .u.f	= 10.00 },
80	{ .u.f	= 20.00 },
81	{ .u.f	= 30.00 },
82	{ .u.f	= 40.00 },
83	{ .u.f	= 50.00 },
84	{ .u.f	= 60.00 },
85	{ .u.f	= 70.00 },
86	{ .u.f	= 80.00 },
87	{ .u.f	= 90.00 },
88	{ .u.f	= 95.00 },
89	{ .u.f	= 99.00 },
90	{ .u.f	= 99.50 },
91	{ .u.f	= 99.90 },
92	{ .u.f	= 99.95 },
93	{ .u.f	= 99.99 },
94};
95
96#define FIO_CLIENT_FLAG		(1 << 16)
97
98/*
99 * Command line options. These will contain the above, plus a few
100 * extra that only pertain to fio itself and not jobs.
101 */
102static struct option l_opts[FIO_NR_OPTIONS] = {
103	{
104		.name		= (char *) "output",
105		.has_arg	= required_argument,
106		.val		= 'o' | FIO_CLIENT_FLAG,
107	},
108	{
109		.name		= (char *) "timeout",
110		.has_arg	= required_argument,
111		.val		= 't' | FIO_CLIENT_FLAG,
112	},
113	{
114		.name		= (char *) "latency-log",
115		.has_arg	= required_argument,
116		.val		= 'l' | FIO_CLIENT_FLAG,
117	},
118	{
119		.name		= (char *) "bandwidth-log",
120		.has_arg	= required_argument,
121		.val		= 'b' | FIO_CLIENT_FLAG,
122	},
123	{
124		.name		= (char *) "minimal",
125		.has_arg	= optional_argument,
126		.val		= 'm' | FIO_CLIENT_FLAG,
127	},
128	{
129		.name		= (char *) "version",
130		.has_arg	= no_argument,
131		.val		= 'v' | FIO_CLIENT_FLAG,
132	},
133	{
134		.name		= (char *) "help",
135		.has_arg	= no_argument,
136		.val		= 'h' | FIO_CLIENT_FLAG,
137	},
138	{
139		.name		= (char *) "cmdhelp",
140		.has_arg	= optional_argument,
141		.val		= 'c' | FIO_CLIENT_FLAG,
142	},
143	{
144		.name		   = (char *) "enghelp",
145		.has_arg	= optional_argument,
146		.val		    = 'i' | FIO_CLIENT_FLAG,
147	},
148	{
149		.name		= (char *) "showcmd",
150		.has_arg	= no_argument,
151		.val		= 's' | FIO_CLIENT_FLAG,
152	},
153	{
154		.name		= (char *) "readonly",
155		.has_arg	= no_argument,
156		.val		= 'r' | FIO_CLIENT_FLAG,
157	},
158	{
159		.name		= (char *) "eta",
160		.has_arg	= required_argument,
161		.val		= 'e' | FIO_CLIENT_FLAG,
162	},
163	{
164		.name		= (char *) "debug",
165		.has_arg	= required_argument,
166		.val		= 'd' | FIO_CLIENT_FLAG,
167	},
168	{
169		.name		= (char *) "section",
170		.has_arg	= required_argument,
171		.val		= 'x' | FIO_CLIENT_FLAG,
172	},
173	{
174		.name		= (char *) "alloc-size",
175		.has_arg	= required_argument,
176		.val		= 'a' | FIO_CLIENT_FLAG,
177	},
178	{
179		.name		= (char *) "profile",
180		.has_arg	= required_argument,
181		.val		= 'p' | FIO_CLIENT_FLAG,
182	},
183	{
184		.name		= (char *) "warnings-fatal",
185		.has_arg	= no_argument,
186		.val		= 'w' | FIO_CLIENT_FLAG,
187	},
188	{
189		.name		= (char *) "max-jobs",
190		.has_arg	= required_argument,
191		.val		= 'j' | FIO_CLIENT_FLAG,
192	},
193	{
194		.name		= (char *) "terse-version",
195		.has_arg	= required_argument,
196		.val		= 'V' | FIO_CLIENT_FLAG,
197	},
198	{
199		.name		= (char *) "server",
200		.has_arg	= optional_argument,
201		.val		= 'S',
202	},
203	{	.name		= (char *) "daemonize",
204		.has_arg	= required_argument,
205		.val		= 'D',
206	},
207	{
208		.name		= (char *) "client",
209		.has_arg	= required_argument,
210		.val		= 'C',
211	},
212	{
213		.name		= NULL,
214	},
215};
216
217static void free_shm(void)
218{
219	struct shmid_ds sbuf;
220
221	if (threads) {
222		void *tp = threads;
223
224		threads = NULL;
225		file_hash_exit();
226		flow_exit();
227		fio_debug_jobp = NULL;
228		shmdt(tp);
229		shmctl(shm_id, IPC_RMID, &sbuf);
230	}
231
232	scleanup();
233}
234
235/*
236 * The thread area is shared between the main process and the job
237 * threads/processes. So setup a shared memory segment that will hold
238 * all the job info. We use the end of the region for keeping track of
239 * open files across jobs, for file sharing.
240 */
241static int setup_thread_area(void)
242{
243	void *hash;
244
245	if (threads)
246		return 0;
247
248	/*
249	 * 1024 is too much on some machines, scale max_jobs if
250	 * we get a failure that looks like too large a shm segment
251	 */
252	do {
253		size_t size = max_jobs * sizeof(struct thread_data);
254
255		size += file_hash_size;
256		size += sizeof(unsigned int);
257
258		shm_id = shmget(0, size, IPC_CREAT | 0600);
259		if (shm_id != -1)
260			break;
261		if (errno != EINVAL && errno != ENOMEM) {
262			perror("shmget");
263			break;
264		}
265
266		max_jobs >>= 1;
267	} while (max_jobs);
268
269	if (shm_id == -1)
270		return 1;
271
272	threads = shmat(shm_id, NULL, 0);
273	if (threads == (void *) -1) {
274		perror("shmat");
275		return 1;
276	}
277
278	memset(threads, 0, max_jobs * sizeof(struct thread_data));
279	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
280	fio_debug_jobp = (void *) hash + file_hash_size;
281	*fio_debug_jobp = -1;
282	file_hash_init(hash);
283
284	flow_init();
285
286	return 0;
287}
288
289/*
290 * Return a free job structure.
291 */
292static struct thread_data *get_new_job(int global, struct thread_data *parent,
293				       int preserve_eo)
294{
295	struct thread_data *td;
296
297	if (global)
298		return &def_thread;
299	if (setup_thread_area()) {
300		log_err("error: failed to setup shm segment\n");
301		return NULL;
302	}
303	if (thread_number >= max_jobs) {
304		log_err("error: maximum number of jobs (%d) reached.\n",
305				max_jobs);
306		return NULL;
307	}
308
309	td = &threads[thread_number++];
310	*td = *parent;
311
312	td->io_ops = NULL;
313	if (!preserve_eo)
314		td->eo = NULL;
315
316	td->o.uid = td->o.gid = -1U;
317
318	dup_files(td, parent);
319	fio_options_mem_dupe(td);
320
321	profile_add_hooks(td);
322
323	td->thread_number = thread_number;
324	return td;
325}
326
327static void put_job(struct thread_data *td)
328{
329	if (td == &def_thread)
330		return;
331
332	profile_td_exit(td);
333	flow_exit_job(td);
334
335	if (td->error)
336		log_info("fio: %s\n", td->verror);
337
338	fio_options_free(td);
339	if (td->io_ops)
340		free_ioengine(td);
341
342	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
343	thread_number--;
344}
345
346static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
347{
348	unsigned int bs = td->o.min_bs[ddir];
349
350	assert(ddir_rw(ddir));
351
352	if (td->o.rate[ddir])
353		td->rate_bps[ddir] = td->o.rate[ddir];
354	else
355		td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
356
357	if (!td->rate_bps[ddir]) {
358		log_err("rate lower than supported\n");
359		return -1;
360	}
361
362	td->rate_pending_usleep[ddir] = 0;
363	return 0;
364}
365
366static int setup_rate(struct thread_data *td)
367{
368	int ret = 0;
369
370	if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
371		ret = __setup_rate(td, DDIR_READ);
372	if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
373		ret |= __setup_rate(td, DDIR_WRITE);
374
375	return ret;
376}
377
378static int fixed_block_size(struct thread_options *o)
379{
380	return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
381		o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
382		o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
383}
384
385/*
386 * Lazy way of fixing up options that depend on each other. We could also
387 * define option callback handlers, but this is easier.
388 */
389static int fixup_options(struct thread_data *td)
390{
391	struct thread_options *o = &td->o;
392	int ret = 0;
393
394#ifndef FIO_HAVE_PSHARED_MUTEX
395	if (!o->use_thread) {
396		log_info("fio: this platform does not support process shared"
397			 " mutexes, forcing use of threads. Use the 'thread'"
398			 " option to get rid of this warning.\n");
399		o->use_thread = 1;
400		ret = warnings_fatal;
401	}
402#endif
403
404	if (o->write_iolog_file && o->read_iolog_file) {
405		log_err("fio: read iolog overrides write_iolog\n");
406		free(o->write_iolog_file);
407		o->write_iolog_file = NULL;
408		ret = warnings_fatal;
409	}
410
411	/*
412	 * only really works with 1 file
413	 */
414	if (o->zone_size && o->open_files == 1)
415		o->zone_size = 0;
416
417	/*
418	 * If zone_range isn't specified, backward compatibility dictates it
419	 * should be made equal to zone_size.
420	 */
421	if (o->zone_size && !o->zone_range)
422		o->zone_range = o->zone_size;
423
424	/*
425	 * Reads can do overwrites, we always need to pre-create the file
426	 */
427	if (td_read(td) || td_rw(td))
428		o->overwrite = 1;
429
430	if (!o->min_bs[DDIR_READ])
431		o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
432	if (!o->max_bs[DDIR_READ])
433		o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
434	if (!o->min_bs[DDIR_WRITE])
435		o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
436	if (!o->max_bs[DDIR_WRITE])
437		o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
438
439	o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
440
441	/*
442	 * For random IO, allow blockalign offset other than min_bs.
443	 */
444	if (!o->ba[DDIR_READ] || !td_random(td))
445		o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
446	if (!o->ba[DDIR_WRITE] || !td_random(td))
447		o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
448
449	if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
450	    o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
451	    !o->norandommap) {
452		log_err("fio: Any use of blockalign= turns off randommap\n");
453		o->norandommap = 1;
454		ret = warnings_fatal;
455	}
456
457	if (!o->file_size_high)
458		o->file_size_high = o->file_size_low;
459
460	if (o->norandommap && o->verify != VERIFY_NONE
461	    && !fixed_block_size(o))  {
462		log_err("fio: norandommap given for variable block sizes, "
463			"verify disabled\n");
464		o->verify = VERIFY_NONE;
465		ret = warnings_fatal;
466	}
467	if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
468		log_err("fio: bs_unaligned may not work with raw io\n");
469
470	/*
471	 * thinktime_spin must be less than thinktime
472	 */
473	if (o->thinktime_spin > o->thinktime)
474		o->thinktime_spin = o->thinktime;
475
476	/*
477	 * The low water mark cannot be bigger than the iodepth
478	 */
479	if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
480		/*
481		 * syslet work around - if the workload is sequential,
482		 * we want to let the queue drain all the way down to
483		 * avoid seeking between async threads
484		 */
485		if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
486			o->iodepth_low = 1;
487		else
488			o->iodepth_low = o->iodepth;
489	}
490
491	/*
492	 * If batch number isn't set, default to the same as iodepth
493	 */
494	if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
495		o->iodepth_batch = o->iodepth;
496
497	if (o->nr_files > td->files_index)
498		o->nr_files = td->files_index;
499
500	if (o->open_files > o->nr_files || !o->open_files)
501		o->open_files = o->nr_files;
502
503	if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
504	    ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
505		o->rate_iops_min[1]))) {
506		log_err("fio: rate and rate_iops are mutually exclusive\n");
507		ret = 1;
508	}
509	if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
510	    (o->rate_iops[0] < o->rate_iops_min[0]) ||
511	    (o->rate_iops[1] < o->rate_iops_min[1])) {
512		log_err("fio: minimum rate exceeds rate\n");
513		ret = 1;
514	}
515
516	if (!o->timeout && o->time_based) {
517		log_err("fio: time_based requires a runtime/timeout setting\n");
518		o->time_based = 0;
519		ret = warnings_fatal;
520	}
521
522	if (o->fill_device && !o->size)
523		o->size = -1ULL;
524
525	if (o->verify != VERIFY_NONE) {
526		if (td_write(td) && o->do_verify && o->numjobs > 1) {
527			log_info("Multiple writers may overwrite blocks that "
528				"belong to other jobs. This can cause "
529				"verification failures.\n");
530			ret = warnings_fatal;
531		}
532
533		o->refill_buffers = 1;
534		if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
535		    !o->verify_interval)
536			o->verify_interval = o->min_bs[DDIR_WRITE];
537	}
538
539	if (o->pre_read) {
540		o->invalidate_cache = 0;
541		if (td->io_ops->flags & FIO_PIPEIO) {
542			log_info("fio: cannot pre-read files with an IO engine"
543				 " that isn't seekable. Pre-read disabled.\n");
544			ret = warnings_fatal;
545		}
546	}
547
548#ifndef FIO_HAVE_FDATASYNC
549	if (o->fdatasync_blocks) {
550		log_info("fio: this platform does not support fdatasync()"
551			 " falling back to using fsync().  Use the 'fsync'"
552			 " option instead of 'fdatasync' to get rid of"
553			 " this warning\n");
554		o->fsync_blocks = o->fdatasync_blocks;
555		o->fdatasync_blocks = 0;
556		ret = warnings_fatal;
557	}
558#endif
559
560#ifdef WIN32
561	/*
562	 * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
563	 * so fail if we're passed those flags
564	 */
565	if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
566		log_err("fio: Windows does not support direct or non-buffered io with"
567				" the synchronous ioengines. Use the 'windowsaio' ioengine"
568				" with 'direct=1' and 'iodepth=1' instead.\n");
569		ret = 1;
570	}
571#endif
572
573	/*
574	 * For fully compressible data, just zero them at init time.
575	 * It's faster than repeatedly filling it.
576	 */
577	if (td->o.compress_percentage == 100) {
578		td->o.zero_buffers = 1;
579		td->o.compress_percentage = 0;
580	}
581
582	return ret;
583}
584
585/*
586 * This function leaks the buffer
587 */
588char *fio_uint_to_kmg(unsigned int val)
589{
590	char *buf = malloc(32);
591	char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
592	char *p = post;
593
594	do {
595		if (val & 1023)
596			break;
597
598		val >>= 10;
599		p++;
600	} while (*p);
601
602	snprintf(buf, 31, "%u%c", val, *p);
603	return buf;
604}
605
606/* External engines are specified by "external:name.o") */
607static const char *get_engine_name(const char *str)
608{
609	char *p = strstr(str, ":");
610
611	if (!p)
612		return str;
613
614	p++;
615	strip_blank_front(&p);
616	strip_blank_end(p);
617	return p;
618}
619
620static int exists_and_not_file(const char *filename)
621{
622	struct stat sb;
623
624	if (lstat(filename, &sb) == -1)
625		return 0;
626
627	/* \\.\ is the device namespace in Windows, where every file
628	 * is a device node */
629	if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
630		return 0;
631
632	return 1;
633}
634
635static void td_fill_rand_seeds_os(struct thread_data *td)
636{
637	os_random_seed(td->rand_seeds[0], &td->bsrange_state);
638	os_random_seed(td->rand_seeds[1], &td->verify_state);
639	os_random_seed(td->rand_seeds[2], &td->rwmix_state);
640
641	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
642		os_random_seed(td->rand_seeds[3], &td->next_file_state);
643
644	os_random_seed(td->rand_seeds[5], &td->file_size_state);
645	os_random_seed(td->rand_seeds[6], &td->trim_state);
646
647	if (!td_random(td))
648		return;
649
650	if (td->o.rand_repeatable)
651		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
652
653	os_random_seed(td->rand_seeds[4], &td->random_state);
654}
655
656static void td_fill_rand_seeds_internal(struct thread_data *td)
657{
658	init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
659	init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
660	init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
661
662	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
663		init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
664
665	init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
666	init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
667
668	if (!td_random(td))
669		return;
670
671	if (td->o.rand_repeatable)
672		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
673
674	init_rand_seed(&td->__random_state, td->rand_seeds[4]);
675}
676
677void td_fill_rand_seeds(struct thread_data *td)
678{
679	if (td->o.use_os_rand)
680		td_fill_rand_seeds_os(td);
681	else
682		td_fill_rand_seeds_internal(td);
683
684	init_rand_seed(&td->buf_state, td->rand_seeds[7]);
685}
686
687
688/*
689 * Initializes the ioengine configured for a job, if it has not been done so
690 * already.
691 */
692int ioengine_load(struct thread_data *td)
693{
694	const char *engine;
695
696	/*
697	 * Engine has already been loaded.
698	 */
699	if (td->io_ops)
700		return 0;
701
702	engine = get_engine_name(td->o.ioengine);
703	td->io_ops = load_ioengine(td, engine);
704	if (!td->io_ops) {
705		log_err("fio: failed to load engine %s\n", engine);
706		return 1;
707	}
708
709	if (td->io_ops->option_struct_size && td->io_ops->options) {
710		/*
711		 * In cases where td->eo is set, clone it for a child thread.
712		 * This requires that the parent thread has the same ioengine,
713		 * but that requirement must be enforced by the code which
714		 * cloned the thread.
715		 */
716		void *origeo = td->eo;
717		/*
718		 * Otherwise use the default thread options.
719		 */
720		if (!origeo && td != &def_thread && def_thread.eo &&
721		    def_thread.io_ops->options == td->io_ops->options)
722			origeo = def_thread.eo;
723
724		options_init(td->io_ops->options);
725		td->eo = malloc(td->io_ops->option_struct_size);
726		/*
727		 * Use the default thread as an option template if this uses the
728		 * same options structure and there are non-default options
729		 * used.
730		 */
731		if (origeo) {
732			memcpy(td->eo, origeo, td->io_ops->option_struct_size);
733			options_mem_dupe(td->eo, td->io_ops->options);
734		} else {
735			memset(td->eo, 0, td->io_ops->option_struct_size);
736			fill_default_options(td->eo, td->io_ops->options);
737		}
738		*(struct thread_data **)td->eo = td;
739	}
740
741	return 0;
742}
743
744/*
745 * Adds a job to the list of things todo. Sanitizes the various options
746 * to make sure we don't have conflicts, and initializes various
747 * members of td.
748 */
749static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
750		   int recursed, int client_type)
751{
752	unsigned int i;
753	char fname[PATH_MAX];
754	int numjobs, file_alloced;
755
756	/*
757	 * the def_thread is just for options, it's not a real job
758	 */
759	if (td == &def_thread)
760		return 0;
761
762	/*
763	 * if we are just dumping the output command line, don't add the job
764	 */
765	if (dump_cmdline) {
766		put_job(td);
767		return 0;
768	}
769
770	td->client_type = client_type;
771
772	if (profile_td_init(td))
773		goto err;
774
775	if (ioengine_load(td))
776		goto err;
777
778	if (td->o.odirect)
779		td->io_ops->flags |= FIO_RAWIO;
780
781	file_alloced = 0;
782	if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
783		file_alloced = 1;
784
785		if (td->o.nr_files == 1 && exists_and_not_file(jobname))
786			add_file(td, jobname);
787		else {
788			for (i = 0; i < td->o.nr_files; i++) {
789				sprintf(fname, "%s.%d.%d", jobname,
790							td->thread_number, i);
791				add_file(td, fname);
792			}
793		}
794	}
795
796	if (fixup_options(td))
797		goto err;
798
799	flow_init_job(td);
800
801	/*
802	 * IO engines only need this for option callbacks, and the address may
803	 * change in subprocesses.
804	 */
805	if (td->eo)
806		*(struct thread_data **)td->eo = NULL;
807
808	if (td->io_ops->flags & FIO_DISKLESSIO) {
809		struct fio_file *f;
810
811		for_each_file(td, f, i)
812			f->real_file_size = -1ULL;
813	}
814
815	td->mutex = fio_mutex_init(0);
816
817	td->ts.clat_percentiles = td->o.clat_percentiles;
818	if (td->o.overwrite_plist)
819		memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
820	else
821		memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
822
823	td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
824	td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
825	td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
826	td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
827	td->ddir_seq_nr = td->o.ddir_seq_nr;
828
829	if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
830		prev_group_jobs = 0;
831		groupid++;
832	}
833
834	td->groupid = groupid;
835	prev_group_jobs++;
836
837	if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
838		td_verror(td, errno, "init_random_state");
839		goto err;
840	}
841
842	if (setup_rate(td))
843		goto err;
844
845	if (td->o.write_lat_log) {
846		setup_log(&td->lat_log, td->o.log_avg_msec, IO_LOG_TYPE_LAT);
847		setup_log(&td->slat_log, td->o.log_avg_msec, IO_LOG_TYPE_SLAT);
848		setup_log(&td->clat_log, td->o.log_avg_msec, IO_LOG_TYPE_CLAT);
849	}
850	if (td->o.write_bw_log)
851		setup_log(&td->bw_log, td->o.log_avg_msec, IO_LOG_TYPE_BW);
852	if (td->o.write_iops_log)
853		setup_log(&td->iops_log, td->o.log_avg_msec, IO_LOG_TYPE_IOPS);
854
855	if (!td->o.name)
856		td->o.name = strdup(jobname);
857
858	if (!terse_output) {
859		if (!job_add_num) {
860			if (is_backend && !recursed)
861				fio_server_send_add_job(td);
862
863			if (!strcmp(td->io_ops->name, "cpuio")) {
864				log_info("%s: ioengine=cpu, cpuload=%u,"
865					 " cpucycle=%u\n", td->o.name,
866							td->o.cpuload,
867							td->o.cpucycle);
868			} else {
869				char *c1, *c2, *c3, *c4;
870
871				c1 = fio_uint_to_kmg(td->o.min_bs[DDIR_READ]);
872				c2 = fio_uint_to_kmg(td->o.max_bs[DDIR_READ]);
873				c3 = fio_uint_to_kmg(td->o.min_bs[DDIR_WRITE]);
874				c4 = fio_uint_to_kmg(td->o.max_bs[DDIR_WRITE]);
875
876				log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
877					 " ioengine=%s, iodepth=%u\n",
878						td->o.name, td->groupid,
879						ddir_str(td->o.td_ddir),
880						c1, c2, c3, c4,
881						td->io_ops->name,
882						td->o.iodepth);
883
884				free(c1);
885				free(c2);
886				free(c3);
887				free(c4);
888			}
889		} else if (job_add_num == 1)
890			log_info("...\n");
891	}
892
893	/*
894	 * recurse add identical jobs, clear numjobs and stonewall options
895	 * as they don't apply to sub-jobs
896	 */
897	numjobs = td->o.numjobs;
898	while (--numjobs) {
899		struct thread_data *td_new = get_new_job(0, td, 1);
900
901		if (!td_new)
902			goto err;
903
904		td_new->o.numjobs = 1;
905		td_new->o.stonewall = 0;
906		td_new->o.new_group = 0;
907
908		if (file_alloced) {
909			td_new->o.filename = NULL;
910			td_new->files_index = 0;
911			td_new->files_size = 0;
912			td_new->files = NULL;
913		}
914
915		job_add_num = numjobs - 1;
916
917		if (add_job(td_new, jobname, job_add_num, 1, client_type))
918			goto err;
919	}
920
921	return 0;
922err:
923	put_job(td);
924	return -1;
925}
926
927/*
928 * Parse as if 'o' was a command line
929 */
930void add_job_opts(const char **o, int client_type)
931{
932	struct thread_data *td, *td_parent;
933	int i, in_global = 1;
934	char jobname[32];
935
936	i = 0;
937	td_parent = td = NULL;
938	while (o[i]) {
939		if (!strncmp(o[i], "name", 4)) {
940			in_global = 0;
941			if (td)
942				add_job(td, jobname, 0, 0, client_type);
943			td = NULL;
944			sprintf(jobname, "%s", o[i] + 5);
945		}
946		if (in_global && !td_parent)
947			td_parent = get_new_job(1, &def_thread, 0);
948		else if (!in_global && !td) {
949			if (!td_parent)
950				td_parent = &def_thread;
951			td = get_new_job(0, td_parent, 0);
952		}
953		if (in_global)
954			fio_options_parse(td_parent, (char **) &o[i], 1);
955		else
956			fio_options_parse(td, (char **) &o[i], 1);
957		i++;
958	}
959
960	if (td)
961		add_job(td, jobname, 0, 0, client_type);
962}
963
964static int skip_this_section(const char *name)
965{
966	int i;
967
968	if (!nr_job_sections)
969		return 0;
970	if (!strncmp(name, "global", 6))
971		return 0;
972
973	for (i = 0; i < nr_job_sections; i++)
974		if (!strcmp(job_sections[i], name))
975			return 0;
976
977	return 1;
978}
979
980static int is_empty_or_comment(char *line)
981{
982	unsigned int i;
983
984	for (i = 0; i < strlen(line); i++) {
985		if (line[i] == ';')
986			return 1;
987		if (line[i] == '#')
988			return 1;
989		if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
990			return 0;
991	}
992
993	return 1;
994}
995
996/*
997 * This is our [ini] type file parser.
998 */
999int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1000{
1001	unsigned int global;
1002	struct thread_data *td;
1003	char *string, *name;
1004	FILE *f;
1005	char *p;
1006	int ret = 0, stonewall;
1007	int first_sect = 1;
1008	int skip_fgets = 0;
1009	int inside_skip = 0;
1010	char **opts;
1011	int i, alloc_opts, num_opts;
1012
1013	if (is_buf)
1014		f = NULL;
1015	else {
1016		if (!strcmp(file, "-"))
1017			f = stdin;
1018		else
1019			f = fopen(file, "r");
1020
1021		if (!f) {
1022			perror("fopen job file");
1023			return 1;
1024		}
1025	}
1026
1027	string = malloc(4096);
1028
1029	/*
1030	 * it's really 256 + small bit, 280 should suffice
1031	 */
1032	name = malloc(280);
1033	memset(name, 0, 280);
1034
1035	alloc_opts = 8;
1036	opts = malloc(sizeof(char *) * alloc_opts);
1037	num_opts = 0;
1038
1039	stonewall = stonewall_flag;
1040	do {
1041		/*
1042		 * if skip_fgets is set, we already have loaded a line we
1043		 * haven't handled.
1044		 */
1045		if (!skip_fgets) {
1046			if (is_buf)
1047				p = strsep(&file, "\n");
1048			else
1049				p = fgets(string, 4096, f);
1050			if (!p)
1051				break;
1052		}
1053
1054		skip_fgets = 0;
1055		strip_blank_front(&p);
1056		strip_blank_end(p);
1057
1058		if (is_empty_or_comment(p))
1059			continue;
1060		if (sscanf(p, "[%255[^\n]]", name) != 1) {
1061			if (inside_skip)
1062				continue;
1063			log_err("fio: option <%s> outside of [] job section\n",
1064									p);
1065			break;
1066		}
1067
1068		name[strlen(name) - 1] = '\0';
1069
1070		if (skip_this_section(name)) {
1071			inside_skip = 1;
1072			continue;
1073		} else
1074			inside_skip = 0;
1075
1076		global = !strncmp(name, "global", 6);
1077
1078		if (dump_cmdline) {
1079			if (first_sect)
1080				log_info("fio ");
1081			if (!global)
1082				log_info("--name=%s ", name);
1083			first_sect = 0;
1084		}
1085
1086		td = get_new_job(global, &def_thread, 0);
1087		if (!td) {
1088			ret = 1;
1089			break;
1090		}
1091
1092		/*
1093		 * Seperate multiple job files by a stonewall
1094		 */
1095		if (!global && stonewall) {
1096			td->o.stonewall = stonewall;
1097			stonewall = 0;
1098		}
1099
1100		num_opts = 0;
1101		memset(opts, 0, alloc_opts * sizeof(char *));
1102
1103		while (1) {
1104			if (is_buf)
1105				p = strsep(&file, "\n");
1106			else
1107				p = fgets(string, 4096, f);
1108			if (!p)
1109				break;
1110
1111			if (is_empty_or_comment(p))
1112				continue;
1113
1114			strip_blank_front(&p);
1115
1116			/*
1117			 * new section, break out and make sure we don't
1118			 * fgets() a new line at the top.
1119			 */
1120			if (p[0] == '[') {
1121				skip_fgets = 1;
1122				break;
1123			}
1124
1125			strip_blank_end(p);
1126
1127			if (num_opts == alloc_opts) {
1128				alloc_opts <<= 1;
1129				opts = realloc(opts,
1130						alloc_opts * sizeof(char *));
1131			}
1132
1133			opts[num_opts] = strdup(p);
1134			num_opts++;
1135		}
1136
1137		ret = fio_options_parse(td, opts, num_opts);
1138		if (!ret) {
1139			if (dump_cmdline)
1140				for (i = 0; i < num_opts; i++)
1141					log_info("--%s ", opts[i]);
1142
1143			ret = add_job(td, name, 0, 0, type);
1144		} else {
1145			log_err("fio: job %s dropped\n", name);
1146			put_job(td);
1147		}
1148
1149		for (i = 0; i < num_opts; i++)
1150			free(opts[i]);
1151		num_opts = 0;
1152	} while (!ret);
1153
1154	if (dump_cmdline)
1155		log_info("\n");
1156
1157	i = 0;
1158	while (i < nr_job_sections) {
1159		free(job_sections[i]);
1160		i++;
1161	}
1162
1163	for (i = 0; i < num_opts; i++)
1164		free(opts[i]);
1165
1166	free(string);
1167	free(name);
1168	free(opts);
1169	if (!is_buf && f != stdin)
1170		fclose(f);
1171	return ret;
1172}
1173
1174static int fill_def_thread(void)
1175{
1176	memset(&def_thread, 0, sizeof(def_thread));
1177
1178	fio_getaffinity(getpid(), &def_thread.o.cpumask);
1179	def_thread.o.timeout = def_timeout;
1180
1181	/*
1182	 * fill default options
1183	 */
1184	fio_fill_default_options(&def_thread);
1185	return 0;
1186}
1187
1188static void usage(const char *name)
1189{
1190	printf("fio %s\n", fio_version_string);
1191	printf("%s [options] [job options] <job file(s)>\n", name);
1192	printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1193		"\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1194		"\t\t\tdiskutil,job,mutex,profile,time,net\n");
1195	printf("  --output\t\tWrite output to file\n");
1196	printf("  --timeout\t\tRuntime in seconds\n");
1197	printf("  --latency-log\t\tGenerate per-job latency logs\n");
1198	printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1199	printf("  --minimal\t\tMinimal (terse) output\n");
1200	printf("  --version\t\tPrint version info and exit\n");
1201	printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1202	printf("  --help\t\tPrint this page\n");
1203	printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1204		" them\n");
1205	printf("  --enghelp=engine\tPrint ioengine help, or list"
1206		" available ioengines\n");
1207	printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1208		" cmd\n");
1209	printf("  --showcmd\t\tTurn a job file into command line options\n");
1210	printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1211	printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1212	printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1213		" writes\n");
1214	printf("  --section=name\tOnly run specified section in job file\n");
1215	printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1216		" (def 1024)\n");
1217	printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1218	printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1219	printf("  --server=args\t\tStart a backend fio server\n");
1220	printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1221	printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1222	printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1223	printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1224}
1225
1226#ifdef FIO_INC_DEBUG
1227struct debug_level debug_levels[] = {
1228	{ .name = "process",
1229	  .help = "Process creation/exit logging",
1230	  .shift = FD_PROCESS,
1231	},
1232	{ .name = "file",
1233	  .help = "File related action logging",
1234	  .shift = FD_FILE,
1235	},
1236	{ .name = "io",
1237	  .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1238	  .shift = FD_IO,
1239	},
1240	{ .name = "mem",
1241	  .help = "Memory allocation/freeing logging",
1242	  .shift = FD_MEM,
1243	},
1244	{ .name = "blktrace",
1245	  .help = "blktrace action logging",
1246	  .shift = FD_BLKTRACE,
1247	},
1248	{ .name = "verify",
1249	  .help = "IO verification action logging",
1250	  .shift = FD_VERIFY,
1251	},
1252	{ .name = "random",
1253	  .help = "Random generation logging",
1254	  .shift = FD_RANDOM,
1255	},
1256	{ .name = "parse",
1257	  .help = "Parser logging",
1258	  .shift = FD_PARSE,
1259	},
1260	{ .name = "diskutil",
1261	  .help = "Disk utility logging actions",
1262	  .shift = FD_DISKUTIL,
1263	},
1264	{ .name = "job",
1265	  .help = "Logging related to creating/destroying jobs",
1266	  .shift = FD_JOB,
1267	},
1268	{ .name = "mutex",
1269	  .help = "Mutex logging",
1270	  .shift = FD_MUTEX
1271	},
1272	{ .name	= "profile",
1273	  .help = "Logging related to profiles",
1274	  .shift = FD_PROFILE,
1275	},
1276	{ .name = "time",
1277	  .help = "Logging related to time keeping functions",
1278	  .shift = FD_TIME,
1279	},
1280	{ .name = "net",
1281	  .help = "Network logging",
1282	  .shift = FD_NET,
1283	},
1284	{ .name = NULL, },
1285};
1286
1287static int set_debug(const char *string)
1288{
1289	struct debug_level *dl;
1290	char *p = (char *) string;
1291	char *opt;
1292	int i;
1293
1294	if (!strcmp(string, "?") || !strcmp(string, "help")) {
1295		log_info("fio: dumping debug options:");
1296		for (i = 0; debug_levels[i].name; i++) {
1297			dl = &debug_levels[i];
1298			log_info("%s,", dl->name);
1299		}
1300		log_info("all\n");
1301		return 1;
1302	}
1303
1304	while ((opt = strsep(&p, ",")) != NULL) {
1305		int found = 0;
1306
1307		if (!strncmp(opt, "all", 3)) {
1308			log_info("fio: set all debug options\n");
1309			fio_debug = ~0UL;
1310			continue;
1311		}
1312
1313		for (i = 0; debug_levels[i].name; i++) {
1314			dl = &debug_levels[i];
1315			found = !strncmp(opt, dl->name, strlen(dl->name));
1316			if (!found)
1317				continue;
1318
1319			if (dl->shift == FD_JOB) {
1320				opt = strchr(opt, ':');
1321				if (!opt) {
1322					log_err("fio: missing job number\n");
1323					break;
1324				}
1325				opt++;
1326				fio_debug_jobno = atoi(opt);
1327				log_info("fio: set debug jobno %d\n",
1328							fio_debug_jobno);
1329			} else {
1330				log_info("fio: set debug option %s\n", opt);
1331				fio_debug |= (1UL << dl->shift);
1332			}
1333			break;
1334		}
1335
1336		if (!found)
1337			log_err("fio: debug mask %s not found\n", opt);
1338	}
1339	return 0;
1340}
1341#else
1342static int set_debug(const char *string)
1343{
1344	log_err("fio: debug tracing not included in build\n");
1345	return 1;
1346}
1347#endif
1348
1349static void fio_options_fill_optstring(void)
1350{
1351	char *ostr = cmd_optstr;
1352	int i, c;
1353
1354	c = i = 0;
1355	while (l_opts[i].name) {
1356		ostr[c++] = l_opts[i].val;
1357		if (l_opts[i].has_arg == required_argument)
1358			ostr[c++] = ':';
1359		else if (l_opts[i].has_arg == optional_argument) {
1360			ostr[c++] = ':';
1361			ostr[c++] = ':';
1362		}
1363		i++;
1364	}
1365	ostr[c] = '\0';
1366}
1367
1368static int client_flag_set(char c)
1369{
1370	int i;
1371
1372	i = 0;
1373	while (l_opts[i].name) {
1374		int val = l_opts[i].val;
1375
1376		if (c == (val & 0xff))
1377			return (val & FIO_CLIENT_FLAG);
1378
1379		i++;
1380	}
1381
1382	return 0;
1383}
1384
1385void parse_cmd_client(void *client, char *opt)
1386{
1387	fio_client_add_cmd_option(client, opt);
1388}
1389
1390int parse_cmd_line(int argc, char *argv[], int client_type)
1391{
1392	struct thread_data *td = NULL;
1393	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1394	char *ostr = cmd_optstr;
1395	void *pid_file = NULL;
1396	void *cur_client = NULL;
1397	int backend = 0;
1398
1399	/*
1400	 * Reset optind handling, since we may call this multiple times
1401	 * for the backend.
1402	 */
1403	optind = 1;
1404
1405	while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1406		did_arg = 1;
1407
1408		if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1409			parse_cmd_client(cur_client, argv[optind - 1]);
1410			c &= ~FIO_CLIENT_FLAG;
1411		}
1412
1413		switch (c) {
1414		case 'a':
1415			smalloc_pool_size = atoi(optarg);
1416			break;
1417		case 't':
1418			def_timeout = atoi(optarg);
1419			break;
1420		case 'l':
1421			write_lat_log = 1;
1422			break;
1423		case 'b':
1424			write_bw_log = 1;
1425			break;
1426		case 'o':
1427			f_out = fopen(optarg, "w+");
1428			if (!f_out) {
1429				perror("fopen output");
1430				exit(1);
1431			}
1432			f_err = f_out;
1433			break;
1434		case 'm':
1435			terse_output = 1;
1436			break;
1437		case 'h':
1438			if (!cur_client) {
1439				usage(argv[0]);
1440				do_exit++;
1441			}
1442			break;
1443		case 'c':
1444			if (!cur_client) {
1445				fio_show_option_help(optarg);
1446				do_exit++;
1447			}
1448			break;
1449		case 'i':
1450			if (!cur_client) {
1451				fio_show_ioengine_help(optarg);
1452				do_exit++;
1453			}
1454			break;
1455		case 's':
1456			dump_cmdline = 1;
1457			break;
1458		case 'r':
1459			read_only = 1;
1460			break;
1461		case 'v':
1462			if (!cur_client) {
1463				log_info("fio %s\n", fio_version_string);
1464				do_exit++;
1465			}
1466			break;
1467		case 'V':
1468			terse_version = atoi(optarg);
1469			if (!(terse_version == 2 || terse_version == 3)) {
1470				log_err("fio: bad terse version format\n");
1471				exit_val = 1;
1472				do_exit++;
1473			}
1474			break;
1475		case 'e':
1476			if (!strcmp("always", optarg))
1477				eta_print = FIO_ETA_ALWAYS;
1478			else if (!strcmp("never", optarg))
1479				eta_print = FIO_ETA_NEVER;
1480			break;
1481		case 'd':
1482			if (set_debug(optarg))
1483				do_exit++;
1484			break;
1485		case 'x': {
1486			size_t new_size;
1487
1488			if (!strcmp(optarg, "global")) {
1489				log_err("fio: can't use global as only "
1490					"section\n");
1491				do_exit++;
1492				exit_val = 1;
1493				break;
1494			}
1495			new_size = (nr_job_sections + 1) * sizeof(char *);
1496			job_sections = realloc(job_sections, new_size);
1497			job_sections[nr_job_sections] = strdup(optarg);
1498			nr_job_sections++;
1499			break;
1500			}
1501		case 'p':
1502			exec_profile = strdup(optarg);
1503			break;
1504		case FIO_GETOPT_JOB: {
1505			const char *opt = l_opts[lidx].name;
1506			char *val = optarg;
1507
1508			if (!strncmp(opt, "name", 4) && td) {
1509				ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1510				if (ret)
1511					return 0;
1512				td = NULL;
1513			}
1514			if (!td) {
1515				int is_section = !strncmp(opt, "name", 4);
1516				int global = 0;
1517
1518				if (!is_section || !strncmp(val, "global", 6))
1519					global = 1;
1520
1521				if (is_section && skip_this_section(val))
1522					continue;
1523
1524				td = get_new_job(global, &def_thread, 1);
1525				if (!td || ioengine_load(td))
1526					return 0;
1527				fio_options_set_ioengine_opts(l_opts, td);
1528			}
1529
1530			ret = fio_cmd_option_parse(td, opt, val);
1531
1532			if (!ret && !strcmp(opt, "ioengine")) {
1533				free_ioengine(td);
1534				if (ioengine_load(td))
1535					return 0;
1536				fio_options_set_ioengine_opts(l_opts, td);
1537			}
1538			break;
1539		}
1540		case FIO_GETOPT_IOENGINE: {
1541			const char *opt = l_opts[lidx].name;
1542			char *val = optarg;
1543			opt = l_opts[lidx].name;
1544			val = optarg;
1545			ret = fio_cmd_ioengine_option_parse(td, opt, val);
1546			break;
1547		}
1548		case 'w':
1549			warnings_fatal = 1;
1550			break;
1551		case 'j':
1552			max_jobs = atoi(optarg);
1553			if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1554				log_err("fio: invalid max jobs: %d\n", max_jobs);
1555				do_exit++;
1556				exit_val = 1;
1557			}
1558			break;
1559		case 'S':
1560			if (nr_clients) {
1561				log_err("fio: can't be both client and server\n");
1562				do_exit++;
1563				exit_val = 1;
1564				break;
1565			}
1566			if (optarg)
1567				fio_server_set_arg(optarg);
1568			is_backend = 1;
1569			backend = 1;
1570			break;
1571		case 'D':
1572			pid_file = strdup(optarg);
1573			break;
1574		case 'C':
1575			if (is_backend) {
1576				log_err("fio: can't be both client and server\n");
1577				do_exit++;
1578				exit_val = 1;
1579				break;
1580			}
1581			if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
1582				log_err("fio: failed adding client %s\n", optarg);
1583				do_exit++;
1584				exit_val = 1;
1585				break;
1586			}
1587			break;
1588		default:
1589			do_exit++;
1590			exit_val = 1;
1591			break;
1592		}
1593		if (do_exit)
1594			break;
1595	}
1596
1597	if (do_exit) {
1598		if (exit_val && !(is_backend || nr_clients))
1599			exit(exit_val);
1600	}
1601
1602	if (nr_clients && fio_clients_connect()) {
1603		do_exit++;
1604		exit_val = 1;
1605		return -1;
1606	}
1607
1608	if (is_backend && backend)
1609		return fio_start_server(pid_file);
1610
1611	if (td) {
1612		if (!ret)
1613			ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1614	}
1615
1616	while (!ret && optind < argc) {
1617		ini_idx++;
1618		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1619		ini_file[ini_idx - 1] = strdup(argv[optind]);
1620		optind++;
1621	}
1622
1623	return ini_idx;
1624}
1625
1626int fio_init_options(void)
1627{
1628	f_out = stdout;
1629	f_err = stderr;
1630
1631	fio_options_fill_optstring();
1632	fio_options_dup_and_init(l_opts);
1633
1634	atexit(free_shm);
1635
1636	if (fill_def_thread())
1637		return 1;
1638
1639	return 0;
1640}
1641
1642extern int fio_check_options(struct thread_options *);
1643
1644int parse_options(int argc, char *argv[])
1645{
1646	const int type = FIO_CLIENT_TYPE_CLI;
1647	int job_files, i;
1648
1649	if (fio_init_options())
1650		return 1;
1651	if (fio_test_cconv(&def_thread.o))
1652		log_err("fio: failed internal cconv test\n");
1653
1654	job_files = parse_cmd_line(argc, argv, type);
1655
1656	if (job_files > 0) {
1657		for (i = 0; i < job_files; i++) {
1658			if (fill_def_thread())
1659				return 1;
1660			if (nr_clients) {
1661				if (fio_clients_send_ini(ini_file[i]))
1662					return 1;
1663				free(ini_file[i]);
1664			} else if (!is_backend) {
1665				if (parse_jobs_ini(ini_file[i], 0, i, type))
1666					return 1;
1667				free(ini_file[i]);
1668			}
1669		}
1670	}
1671
1672	free(ini_file);
1673	fio_options_free(&def_thread);
1674
1675	if (!thread_number) {
1676		if (dump_cmdline)
1677			return 0;
1678		if (exec_profile)
1679			return 0;
1680		if (is_backend || nr_clients)
1681			return 0;
1682		if (did_arg)
1683			return 0;
1684
1685		log_err("No jobs(s) defined\n\n");
1686
1687		if (!did_arg) {
1688			usage(argv[0]);
1689			return 1;
1690		}
1691
1692		return 0;
1693	}
1694
1695	if (def_thread.o.gtod_offload) {
1696		fio_gtod_init();
1697		fio_gtod_offload = 1;
1698		fio_gtod_cpu = def_thread.o.gtod_cpu;
1699	}
1700
1701	if (!terse_output)
1702		log_info("fio %s\n", fio_version_string);
1703
1704	return 0;
1705}
1706