init.c revision f3afa57e36550288340f1b6c694f354ae72654b9 
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 output_format = FIO_OUTPUT_NORMAL;
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 *) "output-format",
121		.has_arg	= optional_argument,
122		.val		= 'F' | FIO_CLIENT_FLAG,
123	},
124	{
125		.name		= (char *) "version",
126		.has_arg	= no_argument,
127		.val		= 'v' | FIO_CLIENT_FLAG,
128	},
129	{
130		.name		= (char *) "help",
131		.has_arg	= no_argument,
132		.val		= 'h' | FIO_CLIENT_FLAG,
133	},
134	{
135		.name		= (char *) "cmdhelp",
136		.has_arg	= optional_argument,
137		.val		= 'c' | FIO_CLIENT_FLAG,
138	},
139	{
140		.name		   = (char *) "enghelp",
141		.has_arg	= optional_argument,
142		.val		    = 'i' | FIO_CLIENT_FLAG,
143	},
144	{
145		.name		= (char *) "showcmd",
146		.has_arg	= no_argument,
147		.val		= 's' | FIO_CLIENT_FLAG,
148	},
149	{
150		.name		= (char *) "readonly",
151		.has_arg	= no_argument,
152		.val		= 'r' | FIO_CLIENT_FLAG,
153	},
154	{
155		.name		= (char *) "eta",
156		.has_arg	= required_argument,
157		.val		= 'e' | FIO_CLIENT_FLAG,
158	},
159	{
160		.name		= (char *) "debug",
161		.has_arg	= required_argument,
162		.val		= 'd' | FIO_CLIENT_FLAG,
163	},
164	{
165		.name		= (char *) "section",
166		.has_arg	= required_argument,
167		.val		= 'x' | FIO_CLIENT_FLAG,
168	},
169	{
170		.name		= (char *) "alloc-size",
171		.has_arg	= required_argument,
172		.val		= 'a' | FIO_CLIENT_FLAG,
173	},
174	{
175		.name		= (char *) "profile",
176		.has_arg	= required_argument,
177		.val		= 'p' | FIO_CLIENT_FLAG,
178	},
179	{
180		.name		= (char *) "warnings-fatal",
181		.has_arg	= no_argument,
182		.val		= 'w' | FIO_CLIENT_FLAG,
183	},
184	{
185		.name		= (char *) "max-jobs",
186		.has_arg	= required_argument,
187		.val		= 'j' | FIO_CLIENT_FLAG,
188	},
189	{
190		.name		= (char *) "terse-version",
191		.has_arg	= required_argument,
192		.val		= 'V' | FIO_CLIENT_FLAG,
193	},
194	{
195		.name		= (char *) "server",
196		.has_arg	= optional_argument,
197		.val		= 'S',
198	},
199	{	.name		= (char *) "daemonize",
200		.has_arg	= required_argument,
201		.val		= 'D',
202	},
203	{
204		.name		= (char *) "client",
205		.has_arg	= required_argument,
206		.val		= 'C',
207	},
208	{
209		.name		= NULL,
210	},
211};
212
213static void free_shm(void)
214{
215	struct shmid_ds sbuf;
216
217	if (threads) {
218		void *tp = threads;
219
220		threads = NULL;
221		file_hash_exit();
222		flow_exit();
223		fio_debug_jobp = NULL;
224		shmdt(tp);
225		shmctl(shm_id, IPC_RMID, &sbuf);
226	}
227
228	scleanup();
229}
230
231/*
232 * The thread area is shared between the main process and the job
233 * threads/processes. So setup a shared memory segment that will hold
234 * all the job info. We use the end of the region for keeping track of
235 * open files across jobs, for file sharing.
236 */
237static int setup_thread_area(void)
238{
239	void *hash;
240
241	if (threads)
242		return 0;
243
244	/*
245	 * 1024 is too much on some machines, scale max_jobs if
246	 * we get a failure that looks like too large a shm segment
247	 */
248	do {
249		size_t size = max_jobs * sizeof(struct thread_data);
250
251		size += file_hash_size;
252		size += sizeof(unsigned int);
253
254		shm_id = shmget(0, size, IPC_CREAT | 0600);
255		if (shm_id != -1)
256			break;
257		if (errno != EINVAL && errno != ENOMEM) {
258			perror("shmget");
259			break;
260		}
261
262		max_jobs >>= 1;
263	} while (max_jobs);
264
265	if (shm_id == -1)
266		return 1;
267
268	threads = shmat(shm_id, NULL, 0);
269	if (threads == (void *) -1) {
270		perror("shmat");
271		return 1;
272	}
273
274	memset(threads, 0, max_jobs * sizeof(struct thread_data));
275	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
276	fio_debug_jobp = (void *) hash + file_hash_size;
277	*fio_debug_jobp = -1;
278	file_hash_init(hash);
279
280	flow_init();
281
282	return 0;
283}
284
285/*
286 * Return a free job structure.
287 */
288static struct thread_data *get_new_job(int global, struct thread_data *parent,
289				       int preserve_eo)
290{
291	struct thread_data *td;
292
293	if (global)
294		return &def_thread;
295	if (setup_thread_area()) {
296		log_err("error: failed to setup shm segment\n");
297		return NULL;
298	}
299	if (thread_number >= max_jobs) {
300		log_err("error: maximum number of jobs (%d) reached.\n",
301				max_jobs);
302		return NULL;
303	}
304
305	td = &threads[thread_number++];
306	*td = *parent;
307
308	td->io_ops = NULL;
309	if (!preserve_eo)
310		td->eo = NULL;
311
312	td->o.uid = td->o.gid = -1U;
313
314	dup_files(td, parent);
315	fio_options_mem_dupe(td);
316
317	profile_add_hooks(td);
318
319	td->thread_number = thread_number;
320	return td;
321}
322
323static void put_job(struct thread_data *td)
324{
325	if (td == &def_thread)
326		return;
327
328	profile_td_exit(td);
329	flow_exit_job(td);
330
331	if (td->error)
332		log_info("fio: %s\n", td->verror);
333
334	fio_options_free(td);
335	if (td->io_ops)
336		free_ioengine(td);
337
338	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
339	thread_number--;
340}
341
342static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
343{
344	unsigned int bs = td->o.min_bs[ddir];
345
346	assert(ddir_rw(ddir));
347
348	if (td->o.rate[ddir])
349		td->rate_bps[ddir] = td->o.rate[ddir];
350	else
351		td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
352
353	if (!td->rate_bps[ddir]) {
354		log_err("rate lower than supported\n");
355		return -1;
356	}
357
358	td->rate_pending_usleep[ddir] = 0;
359	return 0;
360}
361
362static int setup_rate(struct thread_data *td)
363{
364	int ret = 0;
365
366	if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
367		ret = __setup_rate(td, DDIR_READ);
368	if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
369		ret |= __setup_rate(td, DDIR_WRITE);
370	if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
371		ret |= __setup_rate(td, DDIR_TRIM);
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_TRIM] == o->max_bs[DDIR_TRIM] &&
381		o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
382		o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
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	if (!o->min_bs[DDIR_TRIM])
439		o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
440	if (!o->max_bs[DDIR_TRIM])
441		o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
442
443
444	o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
445	o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
446
447	/*
448	 * For random IO, allow blockalign offset other than min_bs.
449	 */
450	if (!o->ba[DDIR_READ] || !td_random(td))
451		o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
452	if (!o->ba[DDIR_WRITE] || !td_random(td))
453		o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
454	if (!o->ba[DDIR_TRIM] || !td_random(td))
455		o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
456
457	if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
458	    o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
459	    o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
460	    !o->norandommap) {
461		log_err("fio: Any use of blockalign= turns off randommap\n");
462		o->norandommap = 1;
463		ret = warnings_fatal;
464	}
465
466	if (!o->file_size_high)
467		o->file_size_high = o->file_size_low;
468
469	if (o->norandommap && o->verify != VERIFY_NONE
470	    && !fixed_block_size(o))  {
471		log_err("fio: norandommap given for variable block sizes, "
472			"verify disabled\n");
473		o->verify = VERIFY_NONE;
474		ret = warnings_fatal;
475	}
476	if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
477		log_err("fio: bs_unaligned may not work with raw io\n");
478
479	/*
480	 * thinktime_spin must be less than thinktime
481	 */
482	if (o->thinktime_spin > o->thinktime)
483		o->thinktime_spin = o->thinktime;
484
485	/*
486	 * The low water mark cannot be bigger than the iodepth
487	 */
488	if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
489		/*
490		 * syslet work around - if the workload is sequential,
491		 * we want to let the queue drain all the way down to
492		 * avoid seeking between async threads
493		 */
494		if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
495			o->iodepth_low = 1;
496		else
497			o->iodepth_low = o->iodepth;
498	}
499
500	/*
501	 * If batch number isn't set, default to the same as iodepth
502	 */
503	if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
504		o->iodepth_batch = o->iodepth;
505
506	if (o->nr_files > td->files_index)
507		o->nr_files = td->files_index;
508
509	if (o->open_files > o->nr_files || !o->open_files)
510		o->open_files = o->nr_files;
511
512	if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
513	    (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
514	    ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
515	    (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
516		log_err("fio: rate and rate_iops are mutually exclusive\n");
517		ret = 1;
518	}
519	if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
520	    (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
521	    (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
522	    (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
523	    (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
524	    (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
525		log_err("fio: minimum rate exceeds rate\n");
526		ret = 1;
527	}
528
529	if (!o->timeout && o->time_based) {
530		log_err("fio: time_based requires a runtime/timeout setting\n");
531		o->time_based = 0;
532		ret = warnings_fatal;
533	}
534
535	if (o->fill_device && !o->size)
536		o->size = -1ULL;
537
538	if (o->verify != VERIFY_NONE) {
539		if (td_write(td) && o->do_verify && o->numjobs > 1) {
540			log_info("Multiple writers may overwrite blocks that "
541				"belong to other jobs. This can cause "
542				"verification failures.\n");
543			ret = warnings_fatal;
544		}
545
546		o->refill_buffers = 1;
547		if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
548		    !o->verify_interval)
549			o->verify_interval = o->min_bs[DDIR_WRITE];
550	}
551
552	if (o->pre_read) {
553		o->invalidate_cache = 0;
554		if (td->io_ops->flags & FIO_PIPEIO) {
555			log_info("fio: cannot pre-read files with an IO engine"
556				 " that isn't seekable. Pre-read disabled.\n");
557			ret = warnings_fatal;
558		}
559	}
560
561#ifndef FIO_HAVE_FDATASYNC
562	if (o->fdatasync_blocks) {
563		log_info("fio: this platform does not support fdatasync()"
564			 " falling back to using fsync().  Use the 'fsync'"
565			 " option instead of 'fdatasync' to get rid of"
566			 " this warning\n");
567		o->fsync_blocks = o->fdatasync_blocks;
568		o->fdatasync_blocks = 0;
569		ret = warnings_fatal;
570	}
571#endif
572
573#ifdef WIN32
574	/*
575	 * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
576	 * so fail if we're passed those flags
577	 */
578	if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
579		log_err("fio: Windows does not support direct or non-buffered io with"
580				" the synchronous ioengines. Use the 'windowsaio' ioengine"
581				" with 'direct=1' and 'iodepth=1' instead.\n");
582		ret = 1;
583	}
584#endif
585
586	/*
587	 * For fully compressible data, just zero them at init time.
588	 * It's faster than repeatedly filling it.
589	 */
590	if (td->o.compress_percentage == 100) {
591		td->o.zero_buffers = 1;
592		td->o.compress_percentage = 0;
593	}
594
595	return ret;
596}
597
598/*
599 * This function leaks the buffer
600 */
601static char *to_kmg(unsigned int val)
602{
603	char *buf = malloc(32);
604	char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
605	char *p = post;
606
607	do {
608		if (val & 1023)
609			break;
610
611		val >>= 10;
612		p++;
613	} while (*p);
614
615	snprintf(buf, 31, "%u%c", val, *p);
616	return buf;
617}
618
619/* External engines are specified by "external:name.o") */
620static const char *get_engine_name(const char *str)
621{
622	char *p = strstr(str, ":");
623
624	if (!p)
625		return str;
626
627	p++;
628	strip_blank_front(&p);
629	strip_blank_end(p);
630	return p;
631}
632
633static int exists_and_not_file(const char *filename)
634{
635	struct stat sb;
636
637	if (lstat(filename, &sb) == -1)
638		return 0;
639
640	/* \\.\ is the device namespace in Windows, where every file
641	 * is a device node */
642	if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
643		return 0;
644
645	return 1;
646}
647
648static void td_fill_rand_seeds_os(struct thread_data *td)
649{
650	os_random_seed(td->rand_seeds[0], &td->bsrange_state);
651	os_random_seed(td->rand_seeds[1], &td->verify_state);
652	os_random_seed(td->rand_seeds[2], &td->rwmix_state);
653
654	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
655		os_random_seed(td->rand_seeds[3], &td->next_file_state);
656
657	os_random_seed(td->rand_seeds[5], &td->file_size_state);
658	os_random_seed(td->rand_seeds[6], &td->trim_state);
659
660	if (!td_random(td))
661		return;
662
663	if (td->o.rand_repeatable)
664		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
665
666	os_random_seed(td->rand_seeds[4], &td->random_state);
667}
668
669static void td_fill_rand_seeds_internal(struct thread_data *td)
670{
671	init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
672	init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
673	init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
674
675	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
676		init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
677
678	init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
679	init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
680
681	if (!td_random(td))
682		return;
683
684	if (td->o.rand_repeatable)
685		td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
686
687	init_rand_seed(&td->__random_state, td->rand_seeds[4]);
688}
689
690void td_fill_rand_seeds(struct thread_data *td)
691{
692	if (td->o.use_os_rand)
693		td_fill_rand_seeds_os(td);
694	else
695		td_fill_rand_seeds_internal(td);
696
697	init_rand_seed(&td->buf_state, td->rand_seeds[7]);
698}
699
700
701/*
702 * Initializes the ioengine configured for a job, if it has not been done so
703 * already.
704 */
705int ioengine_load(struct thread_data *td)
706{
707	const char *engine;
708
709	/*
710	 * Engine has already been loaded.
711	 */
712	if (td->io_ops)
713		return 0;
714
715	engine = get_engine_name(td->o.ioengine);
716	td->io_ops = load_ioengine(td, engine);
717	if (!td->io_ops) {
718		log_err("fio: failed to load engine %s\n", engine);
719		return 1;
720	}
721
722	if (td->io_ops->option_struct_size && td->io_ops->options) {
723		/*
724		 * In cases where td->eo is set, clone it for a child thread.
725		 * This requires that the parent thread has the same ioengine,
726		 * but that requirement must be enforced by the code which
727		 * cloned the thread.
728		 */
729		void *origeo = td->eo;
730		/*
731		 * Otherwise use the default thread options.
732		 */
733		if (!origeo && td != &def_thread && def_thread.eo &&
734		    def_thread.io_ops->options == td->io_ops->options)
735			origeo = def_thread.eo;
736
737		options_init(td->io_ops->options);
738		td->eo = malloc(td->io_ops->option_struct_size);
739		/*
740		 * Use the default thread as an option template if this uses the
741		 * same options structure and there are non-default options
742		 * used.
743		 */
744		if (origeo) {
745			memcpy(td->eo, origeo, td->io_ops->option_struct_size);
746			options_mem_dupe(td->eo, td->io_ops->options);
747		} else {
748			memset(td->eo, 0, td->io_ops->option_struct_size);
749			fill_default_options(td->eo, td->io_ops->options);
750		}
751		*(struct thread_data **)td->eo = td;
752	}
753
754	return 0;
755}
756
757/*
758 * Adds a job to the list of things todo. Sanitizes the various options
759 * to make sure we don't have conflicts, and initializes various
760 * members of td.
761 */
762static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
763{
764	const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
765				   "randread", "randwrite", "randrw",
766				   "trim", NULL, NULL, NULL, "randtrim" };
767	unsigned int i;
768	char fname[PATH_MAX];
769	int numjobs, file_alloced;
770
771	/*
772	 * the def_thread is just for options, it's not a real job
773	 */
774	if (td == &def_thread)
775		return 0;
776
777	/*
778	 * if we are just dumping the output command line, don't add the job
779	 */
780	if (dump_cmdline) {
781		put_job(td);
782		return 0;
783	}
784
785	if (profile_td_init(td))
786		goto err;
787
788	if (ioengine_load(td))
789		goto err;
790
791	if (td->o.use_thread)
792		nr_thread++;
793	else
794		nr_process++;
795
796	if (td->o.odirect)
797		td->io_ops->flags |= FIO_RAWIO;
798
799	file_alloced = 0;
800	if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
801		file_alloced = 1;
802
803		if (td->o.nr_files == 1 && exists_and_not_file(jobname))
804			add_file(td, jobname);
805		else {
806			for (i = 0; i < td->o.nr_files; i++) {
807				sprintf(fname, "%s.%d.%d", jobname,
808							td->thread_number, i);
809				add_file(td, fname);
810			}
811		}
812	}
813
814	if (fixup_options(td))
815		goto err;
816
817	flow_init_job(td);
818
819	/*
820	 * IO engines only need this for option callbacks, and the address may
821	 * change in subprocesses.
822	 */
823	if (td->eo)
824		*(struct thread_data **)td->eo = NULL;
825
826	if (td->io_ops->flags & FIO_DISKLESSIO) {
827		struct fio_file *f;
828
829		for_each_file(td, f, i)
830			f->real_file_size = -1ULL;
831	}
832
833	td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
834
835	td->ts.clat_percentiles = td->o.clat_percentiles;
836	if (td->o.overwrite_plist)
837		memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
838	else
839		memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
840
841	for (i = 0; i < DDIR_RWDIR_CNT; i++) {
842		td->ts.clat_stat[i].min_val = ULONG_MAX;
843		td->ts.slat_stat[i].min_val = ULONG_MAX;
844		td->ts.lat_stat[i].min_val = ULONG_MAX;
845		td->ts.bw_stat[i].min_val = ULONG_MAX;
846	}
847	td->ddir_seq_nr = td->o.ddir_seq_nr;
848
849	if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
850		prev_group_jobs = 0;
851		groupid++;
852	}
853
854	td->groupid = groupid;
855	prev_group_jobs++;
856
857	if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
858		td_verror(td, errno, "init_random_state");
859		goto err;
860	}
861
862	if (setup_rate(td))
863		goto err;
864
865	if (td->o.write_lat_log) {
866		setup_log(&td->lat_log, td->o.log_avg_msec);
867		setup_log(&td->slat_log, td->o.log_avg_msec);
868		setup_log(&td->clat_log, td->o.log_avg_msec);
869	}
870	if (td->o.write_bw_log)
871		setup_log(&td->bw_log, td->o.log_avg_msec);
872	if (td->o.write_iops_log)
873		setup_log(&td->iops_log, td->o.log_avg_msec);
874
875	if (!td->o.name)
876		td->o.name = strdup(jobname);
877
878	if (output_format == FIO_OUTPUT_NORMAL) {
879		if (!job_add_num) {
880			if (!strcmp(td->io_ops->name, "cpuio")) {
881				log_info("%s: ioengine=cpu, cpuload=%u,"
882					 " cpucycle=%u\n", td->o.name,
883							td->o.cpuload,
884							td->o.cpucycle);
885			} else {
886				char *c1, *c2, *c3, *c4, *c5, *c6;
887
888				c1 = to_kmg(td->o.min_bs[DDIR_READ]);
889				c2 = to_kmg(td->o.max_bs[DDIR_READ]);
890				c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
891				c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
892				c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
893				c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
894
895				log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
896					 " ioengine=%s, iodepth=%u\n",
897						td->o.name, td->groupid,
898						ddir_str[td->o.td_ddir],
899						c1, c2, c3, c4, c5, c6,
900						td->io_ops->name,
901						td->o.iodepth);
902
903				free(c1);
904				free(c2);
905				free(c3);
906				free(c4);
907				free(c5);
908				free(c6);
909			}
910		} else if (job_add_num == 1)
911			log_info("...\n");
912	}
913
914	/*
915	 * recurse add identical jobs, clear numjobs and stonewall options
916	 * as they don't apply to sub-jobs
917	 */
918	numjobs = td->o.numjobs;
919	while (--numjobs) {
920		struct thread_data *td_new = get_new_job(0, td, 1);
921
922		if (!td_new)
923			goto err;
924
925		td_new->o.numjobs = 1;
926		td_new->o.stonewall = 0;
927		td_new->o.new_group = 0;
928
929		if (file_alloced) {
930			td_new->o.filename = NULL;
931			td_new->files_index = 0;
932			td_new->files_size = 0;
933			td_new->files = NULL;
934		}
935
936		job_add_num = numjobs - 1;
937
938		if (add_job(td_new, jobname, job_add_num))
939			goto err;
940	}
941
942	return 0;
943err:
944	put_job(td);
945	return -1;
946}
947
948/*
949 * Parse as if 'o' was a command line
950 */
951void add_job_opts(const char **o)
952{
953	struct thread_data *td, *td_parent;
954	int i, in_global = 1;
955	char jobname[32];
956
957	i = 0;
958	td_parent = td = NULL;
959	while (o[i]) {
960		if (!strncmp(o[i], "name", 4)) {
961			in_global = 0;
962			if (td)
963				add_job(td, jobname, 0);
964			td = NULL;
965			sprintf(jobname, "%s", o[i] + 5);
966		}
967		if (in_global && !td_parent)
968			td_parent = get_new_job(1, &def_thread, 0);
969		else if (!in_global && !td) {
970			if (!td_parent)
971				td_parent = &def_thread;
972			td = get_new_job(0, td_parent, 0);
973		}
974		if (in_global)
975			fio_options_parse(td_parent, (char **) &o[i], 1);
976		else
977			fio_options_parse(td, (char **) &o[i], 1);
978		i++;
979	}
980
981	if (td)
982		add_job(td, jobname, 0);
983}
984
985static int skip_this_section(const char *name)
986{
987	int i;
988
989	if (!nr_job_sections)
990		return 0;
991	if (!strncmp(name, "global", 6))
992		return 0;
993
994	for (i = 0; i < nr_job_sections; i++)
995		if (!strcmp(job_sections[i], name))
996			return 0;
997
998	return 1;
999}
1000
1001static int is_empty_or_comment(char *line)
1002{
1003	unsigned int i;
1004
1005	for (i = 0; i < strlen(line); i++) {
1006		if (line[i] == ';')
1007			return 1;
1008		if (line[i] == '#')
1009			return 1;
1010		if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1011			return 0;
1012	}
1013
1014	return 1;
1015}
1016
1017/*
1018 * This is our [ini] type file parser.
1019 */
1020int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1021{
1022	unsigned int global;
1023	struct thread_data *td;
1024	char *string, *name;
1025	FILE *f;
1026	char *p;
1027	int ret = 0, stonewall;
1028	int first_sect = 1;
1029	int skip_fgets = 0;
1030	int inside_skip = 0;
1031	char **opts;
1032	int i, alloc_opts, num_opts;
1033
1034	if (is_buf)
1035		f = NULL;
1036	else {
1037		if (!strcmp(file, "-"))
1038			f = stdin;
1039		else
1040			f = fopen(file, "r");
1041
1042		if (!f) {
1043			perror("fopen job file");
1044			return 1;
1045		}
1046	}
1047
1048	string = malloc(4096);
1049
1050	/*
1051	 * it's really 256 + small bit, 280 should suffice
1052	 */
1053	name = malloc(280);
1054	memset(name, 0, 280);
1055
1056	alloc_opts = 8;
1057	opts = malloc(sizeof(char *) * alloc_opts);
1058	num_opts = 0;
1059
1060	stonewall = stonewall_flag;
1061	do {
1062		/*
1063		 * if skip_fgets is set, we already have loaded a line we
1064		 * haven't handled.
1065		 */
1066		if (!skip_fgets) {
1067			if (is_buf)
1068				p = strsep(&file, "\n");
1069			else
1070				p = fgets(string, 4096, f);
1071			if (!p)
1072				break;
1073		}
1074
1075		skip_fgets = 0;
1076		strip_blank_front(&p);
1077		strip_blank_end(p);
1078
1079		if (is_empty_or_comment(p))
1080			continue;
1081		if (sscanf(p, "[%255[^\n]]", name) != 1) {
1082			if (inside_skip)
1083				continue;
1084			log_err("fio: option <%s> outside of [] job section\n",
1085									p);
1086			break;
1087		}
1088
1089		name[strlen(name) - 1] = '\0';
1090
1091		if (skip_this_section(name)) {
1092			inside_skip = 1;
1093			continue;
1094		} else
1095			inside_skip = 0;
1096
1097		global = !strncmp(name, "global", 6);
1098
1099		if (dump_cmdline) {
1100			if (first_sect)
1101				log_info("fio ");
1102			if (!global)
1103				log_info("--name=%s ", name);
1104			first_sect = 0;
1105		}
1106
1107		td = get_new_job(global, &def_thread, 0);
1108		if (!td) {
1109			ret = 1;
1110			break;
1111		}
1112
1113		/*
1114		 * Seperate multiple job files by a stonewall
1115		 */
1116		if (!global && stonewall) {
1117			td->o.stonewall = stonewall;
1118			stonewall = 0;
1119		}
1120
1121		num_opts = 0;
1122		memset(opts, 0, alloc_opts * sizeof(char *));
1123
1124		while (1) {
1125			if (is_buf)
1126				p = strsep(&file, "\n");
1127			else
1128				p = fgets(string, 4096, f);
1129			if (!p)
1130				break;
1131
1132			if (is_empty_or_comment(p))
1133				continue;
1134
1135			strip_blank_front(&p);
1136
1137			/*
1138			 * new section, break out and make sure we don't
1139			 * fgets() a new line at the top.
1140			 */
1141			if (p[0] == '[') {
1142				skip_fgets = 1;
1143				break;
1144			}
1145
1146			strip_blank_end(p);
1147
1148			if (num_opts == alloc_opts) {
1149				alloc_opts <<= 1;
1150				opts = realloc(opts,
1151						alloc_opts * sizeof(char *));
1152			}
1153
1154			opts[num_opts] = strdup(p);
1155			num_opts++;
1156		}
1157
1158		ret = fio_options_parse(td, opts, num_opts);
1159		if (!ret) {
1160			if (dump_cmdline)
1161				for (i = 0; i < num_opts; i++)
1162					log_info("--%s ", opts[i]);
1163
1164			ret = add_job(td, name, 0);
1165		} else {
1166			log_err("fio: job %s dropped\n", name);
1167			put_job(td);
1168		}
1169
1170		for (i = 0; i < num_opts; i++)
1171			free(opts[i]);
1172		num_opts = 0;
1173	} while (!ret);
1174
1175	if (dump_cmdline)
1176		log_info("\n");
1177
1178	i = 0;
1179	while (i < nr_job_sections) {
1180		free(job_sections[i]);
1181		i++;
1182	}
1183
1184	for (i = 0; i < num_opts; i++)
1185		free(opts[i]);
1186
1187	free(string);
1188	free(name);
1189	free(opts);
1190	if (!is_buf && f != stdin)
1191		fclose(f);
1192	return ret;
1193}
1194
1195static int fill_def_thread(void)
1196{
1197	memset(&def_thread, 0, sizeof(def_thread));
1198
1199	fio_getaffinity(getpid(), &def_thread.o.cpumask);
1200	def_thread.o.timeout = def_timeout;
1201
1202	/*
1203	 * fill default options
1204	 */
1205	fio_fill_default_options(&def_thread);
1206	return 0;
1207}
1208
1209static void usage(const char *name)
1210{
1211	printf("%s\n", fio_version_string);
1212	printf("%s [options] [job options] <job file(s)>\n", name);
1213	printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1214		"\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1215		"\t\t\tdiskutil,job,mutex,profile,time,net\n");
1216	printf("  --output\t\tWrite output to file\n");
1217	printf("  --runtime\t\tRuntime in seconds\n");
1218	printf("  --latency-log\t\tGenerate per-job latency logs\n");
1219	printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1220	printf("  --minimal\t\tMinimal (terse) output\n");
1221	printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1222	printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1223	printf("  --version\t\tPrint version info and exit\n");
1224	printf("  --help\t\tPrint this page\n");
1225	printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1226		" them\n");
1227	printf("  --enghelp=engine\tPrint ioengine help, or list"
1228		" available ioengines\n");
1229	printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1230		" cmd\n");
1231	printf("  --showcmd\t\tTurn a job file into command line options\n");
1232	printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1233	printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1234	printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1235		" writes\n");
1236	printf("  --section=name\tOnly run specified section in job file\n");
1237	printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1238		" (def 1024)\n");
1239	printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1240	printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1241	printf("  --server=args\t\tStart a backend fio server\n");
1242	printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1243	printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1244	printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1245	printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1246}
1247
1248#ifdef FIO_INC_DEBUG
1249struct debug_level debug_levels[] = {
1250	{ .name = "process",	.shift = FD_PROCESS, },
1251	{ .name = "file",	.shift = FD_FILE, },
1252	{ .name = "io",		.shift = FD_IO, },
1253	{ .name = "mem",	.shift = FD_MEM, },
1254	{ .name = "blktrace",	.shift = FD_BLKTRACE },
1255	{ .name = "verify",	.shift = FD_VERIFY },
1256	{ .name = "random",	.shift = FD_RANDOM },
1257	{ .name = "parse",	.shift = FD_PARSE },
1258	{ .name = "diskutil",	.shift = FD_DISKUTIL },
1259	{ .name = "job",	.shift = FD_JOB },
1260	{ .name = "mutex",	.shift = FD_MUTEX },
1261	{ .name	= "profile",	.shift = FD_PROFILE },
1262	{ .name = "time",	.shift = FD_TIME },
1263	{ .name = "net",	.shift = FD_NET },
1264	{ .name = NULL, },
1265};
1266
1267static int set_debug(const char *string)
1268{
1269	struct debug_level *dl;
1270	char *p = (char *) string;
1271	char *opt;
1272	int i;
1273
1274	if (!strcmp(string, "?") || !strcmp(string, "help")) {
1275		log_info("fio: dumping debug options:");
1276		for (i = 0; debug_levels[i].name; i++) {
1277			dl = &debug_levels[i];
1278			log_info("%s,", dl->name);
1279		}
1280		log_info("all\n");
1281		return 1;
1282	}
1283
1284	while ((opt = strsep(&p, ",")) != NULL) {
1285		int found = 0;
1286
1287		if (!strncmp(opt, "all", 3)) {
1288			log_info("fio: set all debug options\n");
1289			fio_debug = ~0UL;
1290			continue;
1291		}
1292
1293		for (i = 0; debug_levels[i].name; i++) {
1294			dl = &debug_levels[i];
1295			found = !strncmp(opt, dl->name, strlen(dl->name));
1296			if (!found)
1297				continue;
1298
1299			if (dl->shift == FD_JOB) {
1300				opt = strchr(opt, ':');
1301				if (!opt) {
1302					log_err("fio: missing job number\n");
1303					break;
1304				}
1305				opt++;
1306				fio_debug_jobno = atoi(opt);
1307				log_info("fio: set debug jobno %d\n",
1308							fio_debug_jobno);
1309			} else {
1310				log_info("fio: set debug option %s\n", opt);
1311				fio_debug |= (1UL << dl->shift);
1312			}
1313			break;
1314		}
1315
1316		if (!found)
1317			log_err("fio: debug mask %s not found\n", opt);
1318	}
1319	return 0;
1320}
1321#else
1322static int set_debug(const char *string)
1323{
1324	log_err("fio: debug tracing not included in build\n");
1325	return 1;
1326}
1327#endif
1328
1329static void fio_options_fill_optstring(void)
1330{
1331	char *ostr = cmd_optstr;
1332	int i, c;
1333
1334	c = i = 0;
1335	while (l_opts[i].name) {
1336		ostr[c++] = l_opts[i].val;
1337		if (l_opts[i].has_arg == required_argument)
1338			ostr[c++] = ':';
1339		else if (l_opts[i].has_arg == optional_argument) {
1340			ostr[c++] = ':';
1341			ostr[c++] = ':';
1342		}
1343		i++;
1344	}
1345	ostr[c] = '\0';
1346}
1347
1348static int client_flag_set(char c)
1349{
1350	int i;
1351
1352	i = 0;
1353	while (l_opts[i].name) {
1354		int val = l_opts[i].val;
1355
1356		if (c == (val & 0xff))
1357			return (val & FIO_CLIENT_FLAG);
1358
1359		i++;
1360	}
1361
1362	return 0;
1363}
1364
1365void parse_cmd_client(void *client, char *opt)
1366{
1367	fio_client_add_cmd_option(client, opt);
1368}
1369
1370int parse_cmd_line(int argc, char *argv[])
1371{
1372	struct thread_data *td = NULL;
1373	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1374	char *ostr = cmd_optstr;
1375	void *pid_file = NULL;
1376	void *cur_client = NULL;
1377	int backend = 0;
1378
1379	/*
1380	 * Reset optind handling, since we may call this multiple times
1381	 * for the backend.
1382	 */
1383	optind = 1;
1384
1385	while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1386		did_arg = 1;
1387
1388		if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1389			parse_cmd_client(cur_client, argv[optind - 1]);
1390			c &= ~FIO_CLIENT_FLAG;
1391		}
1392
1393		switch (c) {
1394		case 'a':
1395			smalloc_pool_size = atoi(optarg);
1396			break;
1397		case 't':
1398			def_timeout = atoi(optarg);
1399			break;
1400		case 'l':
1401			write_lat_log = 1;
1402			break;
1403		case 'b':
1404			write_bw_log = 1;
1405			break;
1406		case 'o':
1407			f_out = fopen(optarg, "w+");
1408			if (!f_out) {
1409				perror("fopen output");
1410				exit(1);
1411			}
1412			f_err = f_out;
1413			break;
1414		case 'm':
1415			output_format = FIO_OUTPUT_TERSE;
1416			break;
1417		case 'F':
1418			if (!strcmp(optarg, "minimal") ||
1419			    !strcmp(optarg, "terse") ||
1420			    !strcmp(optarg, "csv"))
1421				output_format = FIO_OUTPUT_TERSE;
1422			else if (!strcmp(optarg, "json"))
1423				output_format = FIO_OUTPUT_JSON;
1424			else
1425				output_format = FIO_OUTPUT_NORMAL;
1426			break;
1427		case 'h':
1428			if (!cur_client) {
1429				usage(argv[0]);
1430				do_exit++;
1431			}
1432			break;
1433		case 'c':
1434			if (!cur_client) {
1435				fio_show_option_help(optarg);
1436				do_exit++;
1437			}
1438			break;
1439		case 'i':
1440			if (!cur_client) {
1441				fio_show_ioengine_help(optarg);
1442				do_exit++;
1443			}
1444			break;
1445		case 's':
1446			dump_cmdline = 1;
1447			break;
1448		case 'r':
1449			read_only = 1;
1450			break;
1451		case 'v':
1452			if (!cur_client) {
1453				log_info("%s\n", fio_version_string);
1454				do_exit++;
1455			}
1456			break;
1457		case 'V':
1458			terse_version = atoi(optarg);
1459			if (!(terse_version == 2 || terse_version == 3) ||
1460			     (terse_version == 4)) {
1461				log_err("fio: bad terse version format\n");
1462				exit_val = 1;
1463				do_exit++;
1464			}
1465			break;
1466		case 'e':
1467			if (!strcmp("always", optarg))
1468				eta_print = FIO_ETA_ALWAYS;
1469			else if (!strcmp("never", optarg))
1470				eta_print = FIO_ETA_NEVER;
1471			break;
1472		case 'd':
1473			if (set_debug(optarg))
1474				do_exit++;
1475			break;
1476		case 'x': {
1477			size_t new_size;
1478
1479			if (!strcmp(optarg, "global")) {
1480				log_err("fio: can't use global as only "
1481					"section\n");
1482				do_exit++;
1483				exit_val = 1;
1484				break;
1485			}
1486			new_size = (nr_job_sections + 1) * sizeof(char *);
1487			job_sections = realloc(job_sections, new_size);
1488			job_sections[nr_job_sections] = strdup(optarg);
1489			nr_job_sections++;
1490			break;
1491			}
1492		case 'p':
1493			exec_profile = strdup(optarg);
1494			break;
1495		case FIO_GETOPT_JOB: {
1496			const char *opt = l_opts[lidx].name;
1497			char *val = optarg;
1498
1499			if (!strncmp(opt, "name", 4) && td) {
1500				ret = add_job(td, td->o.name ?: "fio", 0);
1501				if (ret)
1502					return 0;
1503				td = NULL;
1504			}
1505			if (!td) {
1506				int is_section = !strncmp(opt, "name", 4);
1507				int global = 0;
1508
1509				if (!is_section || !strncmp(val, "global", 6))
1510					global = 1;
1511
1512				if (is_section && skip_this_section(val))
1513					continue;
1514
1515				td = get_new_job(global, &def_thread, 1);
1516				if (!td || ioengine_load(td))
1517					return 0;
1518				fio_options_set_ioengine_opts(l_opts, td);
1519			}
1520
1521			ret = fio_cmd_option_parse(td, opt, val);
1522
1523			if (!ret && !strcmp(opt, "ioengine")) {
1524				free_ioengine(td);
1525				if (ioengine_load(td))
1526					return 0;
1527				fio_options_set_ioengine_opts(l_opts, td);
1528			}
1529			break;
1530		}
1531		case FIO_GETOPT_IOENGINE: {
1532			const char *opt = l_opts[lidx].name;
1533			char *val = optarg;
1534			opt = l_opts[lidx].name;
1535			val = optarg;
1536			ret = fio_cmd_ioengine_option_parse(td, opt, val);
1537			break;
1538		}
1539		case 'w':
1540			warnings_fatal = 1;
1541			break;
1542		case 'j':
1543			max_jobs = atoi(optarg);
1544			if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1545				log_err("fio: invalid max jobs: %d\n", max_jobs);
1546				do_exit++;
1547				exit_val = 1;
1548			}
1549			break;
1550		case 'S':
1551			if (nr_clients) {
1552				log_err("fio: can't be both client and server\n");
1553				do_exit++;
1554				exit_val = 1;
1555				break;
1556			}
1557			if (optarg)
1558				fio_server_set_arg(optarg);
1559			is_backend = 1;
1560			backend = 1;
1561			break;
1562		case 'D':
1563			pid_file = strdup(optarg);
1564			break;
1565		case 'C':
1566			if (is_backend) {
1567				log_err("fio: can't be both client and server\n");
1568				do_exit++;
1569				exit_val = 1;
1570				break;
1571			}
1572			if (fio_client_add(optarg, &cur_client)) {
1573				log_err("fio: failed adding client %s\n", optarg);
1574				do_exit++;
1575				exit_val = 1;
1576				break;
1577			}
1578			/*
1579			 * If the next argument exists and isn't an option,
1580			 * assume it's a job file for this client only.
1581			 */
1582			while (optind < argc) {
1583				if (!strncmp(argv[optind], "--", 2) ||
1584				    !strncmp(argv[optind], "-", 1))
1585					break;
1586
1587				fio_client_add_ini_file(cur_client, argv[optind]);
1588				optind++;
1589			}
1590			break;
1591		default:
1592			do_exit++;
1593			exit_val = 1;
1594			break;
1595		}
1596		if (do_exit)
1597			break;
1598	}
1599
1600	if (do_exit) {
1601		if (exit_val && !(is_backend || nr_clients))
1602			exit(exit_val);
1603	}
1604
1605	if (nr_clients && fio_clients_connect()) {
1606		do_exit++;
1607		exit_val = 1;
1608		return -1;
1609	}
1610
1611	if (is_backend && backend)
1612		return fio_start_server(pid_file);
1613
1614	if (td) {
1615		if (!ret)
1616			ret = add_job(td, td->o.name ?: "fio", 0);
1617	}
1618
1619	while (!ret && optind < argc) {
1620		ini_idx++;
1621		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1622		ini_file[ini_idx - 1] = strdup(argv[optind]);
1623		optind++;
1624	}
1625
1626	return ini_idx;
1627}
1628
1629int parse_options(int argc, char *argv[])
1630{
1631	int job_files, i;
1632
1633	f_out = stdout;
1634	f_err = stderr;
1635
1636	fio_options_fill_optstring();
1637	fio_options_dup_and_init(l_opts);
1638
1639	atexit(free_shm);
1640
1641	if (fill_def_thread())
1642		return 1;
1643
1644	job_files = parse_cmd_line(argc, argv);
1645
1646	if (job_files > 0) {
1647		for (i = 0; i < job_files; i++) {
1648			if (fill_def_thread())
1649				return 1;
1650			if (nr_clients) {
1651				if (fio_clients_send_ini(ini_file[i]))
1652					return 1;
1653				free(ini_file[i]);
1654			} else if (!is_backend) {
1655				if (parse_jobs_ini(ini_file[i], 0, i))
1656					return 1;
1657				free(ini_file[i]);
1658			}
1659		}
1660	} else if (nr_clients) {
1661		if (fill_def_thread())
1662			return 1;
1663		if (fio_clients_send_ini(NULL))
1664			return 1;
1665	}
1666
1667	free(ini_file);
1668	fio_options_free(&def_thread);
1669
1670	if (!thread_number) {
1671		if (dump_cmdline)
1672			return 0;
1673		if (exec_profile)
1674			return 0;
1675		if (is_backend || nr_clients)
1676			return 0;
1677		if (did_arg)
1678			return 0;
1679
1680		log_err("No jobs(s) defined\n\n");
1681
1682		if (!did_arg) {
1683			usage(argv[0]);
1684			return 1;
1685		}
1686
1687		return 0;
1688	}
1689
1690	if (def_thread.o.gtod_offload) {
1691		fio_gtod_init();
1692		fio_gtod_offload = 1;
1693		fio_gtod_cpu = def_thread.o.gtod_cpu;
1694	}
1695
1696	if (output_format == FIO_OUTPUT_NORMAL)
1697		log_info("%s\n", fio_version_string);
1698
1699	return 0;
1700}
1701