init.c revision 798827c895a585f284842f6b99378be19c821263 
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#ifndef FIO_NO_HAVE_SHM_H
13#include <sys/shm.h>
14#endif
15#include <sys/types.h>
16#include <sys/stat.h>
17
18#include "fio.h"
19#include "parse.h"
20#include "smalloc.h"
21#include "filehash.h"
22#include "verify.h"
23#include "profile.h"
24#include "server.h"
25
26#include "lib/getopt.h"
27
28const char fio_version_string[] = FIO_VERSION;
29
30#define FIO_RANDSEED		(0xb1899bedUL)
31
32static char **ini_file;
33static int max_jobs = FIO_MAX_JOBS;
34static int dump_cmdline;
35static int def_timeout;
36
37static struct thread_data def_thread;
38struct thread_data *threads = NULL;
39
40int exitall_on_terminate = 0;
41int output_format = FIO_OUTPUT_NORMAL;
42int eta_print;
43unsigned long long mlock_size = 0;
44FILE *f_out = NULL;
45FILE *f_err = NULL;
46char **job_sections = NULL;
47int nr_job_sections = 0;
48char *exec_profile = NULL;
49int warnings_fatal = 0;
50int terse_version = 3;
51int is_backend = 0;
52int nr_clients = 0;
53int log_syslog = 0;
54
55int write_bw_log = 0;
56int read_only = 0;
57
58static int write_lat_log;
59
60static int prev_group_jobs;
61
62unsigned long fio_debug = 0;
63unsigned int fio_debug_jobno = -1;
64unsigned int *fio_debug_jobp = NULL;
65
66static char cmd_optstr[256];
67static int did_arg;
68
69const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
70	{ .u.f	=  1.00 },
71	{ .u.f	=  5.00 },
72	{ .u.f	= 10.00 },
73	{ .u.f	= 20.00 },
74	{ .u.f	= 30.00 },
75	{ .u.f	= 40.00 },
76	{ .u.f	= 50.00 },
77	{ .u.f	= 60.00 },
78	{ .u.f	= 70.00 },
79	{ .u.f	= 80.00 },
80	{ .u.f	= 90.00 },
81	{ .u.f	= 95.00 },
82	{ .u.f	= 99.00 },
83	{ .u.f	= 99.50 },
84	{ .u.f	= 99.90 },
85	{ .u.f	= 99.95 },
86	{ .u.f	= 99.99 },
87};
88
89#define FIO_CLIENT_FLAG		(1 << 16)
90
91/*
92 * Command line options. These will contain the above, plus a few
93 * extra that only pertain to fio itself and not jobs.
94 */
95static struct option l_opts[FIO_NR_OPTIONS] = {
96	{
97		.name		= (char *) "output",
98		.has_arg	= required_argument,
99		.val		= 'o' | FIO_CLIENT_FLAG,
100	},
101	{
102		.name		= (char *) "timeout",
103		.has_arg	= required_argument,
104		.val		= 't' | FIO_CLIENT_FLAG,
105	},
106	{
107		.name		= (char *) "latency-log",
108		.has_arg	= required_argument,
109		.val		= 'l' | FIO_CLIENT_FLAG,
110	},
111	{
112		.name		= (char *) "bandwidth-log",
113		.has_arg	= required_argument,
114		.val		= 'b' | FIO_CLIENT_FLAG,
115	},
116	{
117		.name		= (char *) "minimal",
118		.has_arg	= optional_argument,
119		.val		= 'm' | FIO_CLIENT_FLAG,
120	},
121	{
122		.name		= (char *) "output-format",
123		.has_arg	= optional_argument,
124		.val		= 'F' | 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		= (char *) "cpuclock-test",
212		.has_arg	= no_argument,
213		.val		= 'T',
214	},
215	{
216		.name		= NULL,
217	},
218};
219
220static void free_shm(void)
221{
222	struct shmid_ds sbuf;
223
224	if (threads) {
225		void *tp = threads;
226
227		threads = NULL;
228		file_hash_exit();
229		flow_exit();
230		fio_debug_jobp = NULL;
231		shmdt(tp);
232		shmctl(shm_id, IPC_RMID, &sbuf);
233	}
234
235	scleanup();
236}
237
238/*
239 * The thread area is shared between the main process and the job
240 * threads/processes. So setup a shared memory segment that will hold
241 * all the job info. We use the end of the region for keeping track of
242 * open files across jobs, for file sharing.
243 */
244static int setup_thread_area(void)
245{
246	void *hash;
247
248	if (threads)
249		return 0;
250
251	/*
252	 * 1024 is too much on some machines, scale max_jobs if
253	 * we get a failure that looks like too large a shm segment
254	 */
255	do {
256		size_t size = max_jobs * sizeof(struct thread_data);
257
258		size += file_hash_size;
259		size += sizeof(unsigned int);
260
261		shm_id = shmget(0, size, IPC_CREAT | 0600);
262		if (shm_id != -1)
263			break;
264		if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
265			perror("shmget");
266			break;
267		}
268
269		max_jobs >>= 1;
270	} while (max_jobs);
271
272	if (shm_id == -1)
273		return 1;
274
275	threads = shmat(shm_id, NULL, 0);
276	if (threads == (void *) -1) {
277		perror("shmat");
278		return 1;
279	}
280
281	memset(threads, 0, max_jobs * sizeof(struct thread_data));
282	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
283	fio_debug_jobp = (void *) hash + file_hash_size;
284	*fio_debug_jobp = -1;
285	file_hash_init(hash);
286
287	flow_init();
288
289	return 0;
290}
291
292/*
293 * Return a free job structure.
294 */
295static struct thread_data *get_new_job(int global, struct thread_data *parent,
296				       int preserve_eo)
297{
298	struct thread_data *td;
299
300	if (global)
301		return &def_thread;
302	if (setup_thread_area()) {
303		log_err("error: failed to setup shm segment\n");
304		return NULL;
305	}
306	if (thread_number >= max_jobs) {
307		log_err("error: maximum number of jobs (%d) reached.\n",
308				max_jobs);
309		return NULL;
310	}
311
312	td = &threads[thread_number++];
313	*td = *parent;
314
315	td->io_ops = NULL;
316	if (!preserve_eo)
317		td->eo = NULL;
318
319	td->o.uid = td->o.gid = -1U;
320
321	dup_files(td, parent);
322	fio_options_mem_dupe(td);
323
324	profile_add_hooks(td);
325
326	td->thread_number = thread_number;
327
328	if (!parent || !parent->o.group_reporting)
329		stat_number++;
330
331	return td;
332}
333
334static void put_job(struct thread_data *td)
335{
336	if (td == &def_thread)
337		return;
338
339	profile_td_exit(td);
340	flow_exit_job(td);
341
342	if (td->error)
343		log_info("fio: %s\n", td->verror);
344
345	fio_options_free(td);
346	if (td->io_ops)
347		free_ioengine(td);
348
349	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
350	thread_number--;
351}
352
353static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
354{
355	unsigned int bs = td->o.min_bs[ddir];
356
357	assert(ddir_rw(ddir));
358
359	if (td->o.rate[ddir])
360		td->rate_bps[ddir] = td->o.rate[ddir];
361	else
362		td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
363
364	if (!td->rate_bps[ddir]) {
365		log_err("rate lower than supported\n");
366		return -1;
367	}
368
369	td->rate_pending_usleep[ddir] = 0;
370	return 0;
371}
372
373static int setup_rate(struct thread_data *td)
374{
375	int ret = 0;
376
377	if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
378		ret = __setup_rate(td, DDIR_READ);
379	if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
380		ret |= __setup_rate(td, DDIR_WRITE);
381	if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
382		ret |= __setup_rate(td, DDIR_TRIM);
383
384	return ret;
385}
386
387static int fixed_block_size(struct thread_options *o)
388{
389	return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
390		o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
391		o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
392		o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
393		o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
394}
395
396/*
397 * Lazy way of fixing up options that depend on each other. We could also
398 * define option callback handlers, but this is easier.
399 */
400static int fixup_options(struct thread_data *td)
401{
402	struct thread_options *o = &td->o;
403	int ret = 0;
404
405#ifndef FIO_HAVE_PSHARED_MUTEX
406	if (!o->use_thread) {
407		log_info("fio: this platform does not support process shared"
408			 " mutexes, forcing use of threads. Use the 'thread'"
409			 " option to get rid of this warning.\n");
410		o->use_thread = 1;
411		ret = warnings_fatal;
412	}
413#endif
414
415	if (o->write_iolog_file && o->read_iolog_file) {
416		log_err("fio: read iolog overrides write_iolog\n");
417		free(o->write_iolog_file);
418		o->write_iolog_file = NULL;
419		ret = warnings_fatal;
420	}
421
422	/*
423	 * only really works with 1 file
424	 */
425	if (o->zone_size && o->open_files == 1)
426		o->zone_size = 0;
427
428	/*
429	 * If zone_range isn't specified, backward compatibility dictates it
430	 * should be made equal to zone_size.
431	 */
432	if (o->zone_size && !o->zone_range)
433		o->zone_range = o->zone_size;
434
435	/*
436	 * Reads can do overwrites, we always need to pre-create the file
437	 */
438	if (td_read(td) || td_rw(td))
439		o->overwrite = 1;
440
441	if (!o->min_bs[DDIR_READ])
442		o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
443	if (!o->max_bs[DDIR_READ])
444		o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
445	if (!o->min_bs[DDIR_WRITE])
446		o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
447	if (!o->max_bs[DDIR_WRITE])
448		o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
449	if (!o->min_bs[DDIR_TRIM])
450		o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
451	if (!o->max_bs[DDIR_TRIM])
452		o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
453
454
455	o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
456	o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
457
458	/*
459	 * For random IO, allow blockalign offset other than min_bs.
460	 */
461	if (!o->ba[DDIR_READ] || !td_random(td))
462		o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
463	if (!o->ba[DDIR_WRITE] || !td_random(td))
464		o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
465	if (!o->ba[DDIR_TRIM] || !td_random(td))
466		o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
467
468	if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
469	    o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
470	    o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
471	    !o->norandommap) {
472		log_err("fio: Any use of blockalign= turns off randommap\n");
473		o->norandommap = 1;
474		ret = warnings_fatal;
475	}
476
477	if (!o->file_size_high)
478		o->file_size_high = o->file_size_low;
479
480	if (o->norandommap && o->verify != VERIFY_NONE
481	    && !fixed_block_size(o))  {
482		log_err("fio: norandommap given for variable block sizes, "
483			"verify disabled\n");
484		o->verify = VERIFY_NONE;
485		ret = warnings_fatal;
486	}
487	if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
488		log_err("fio: bs_unaligned may not work with raw io\n");
489
490	/*
491	 * thinktime_spin must be less than thinktime
492	 */
493	if (o->thinktime_spin > o->thinktime)
494		o->thinktime_spin = o->thinktime;
495
496	/*
497	 * The low water mark cannot be bigger than the iodepth
498	 */
499	if (o->iodepth_low > o->iodepth || !o->iodepth_low)
500		o->iodepth_low = o->iodepth;
501
502	/*
503	 * If batch number isn't set, default to the same as iodepth
504	 */
505	if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
506		o->iodepth_batch = o->iodepth;
507
508	if (o->nr_files > td->files_index)
509		o->nr_files = td->files_index;
510
511	if (o->open_files > o->nr_files || !o->open_files)
512		o->open_files = o->nr_files;
513
514	if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
515	    (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
516	    ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
517	    (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
518		log_err("fio: rate and rate_iops are mutually exclusive\n");
519		ret = 1;
520	}
521	if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
522	    (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
523	    (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
524	    (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
525	    (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
526	    (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
527		log_err("fio: minimum rate exceeds rate\n");
528		ret = 1;
529	}
530
531	if (!o->timeout && o->time_based) {
532		log_err("fio: time_based requires a runtime/timeout setting\n");
533		o->time_based = 0;
534		ret = warnings_fatal;
535	}
536
537	if (o->fill_device && !o->size)
538		o->size = -1ULL;
539
540	if (o->verify != VERIFY_NONE) {
541		if (td_write(td) && o->do_verify && o->numjobs > 1) {
542			log_info("Multiple writers may overwrite blocks that "
543				"belong to other jobs. This can cause "
544				"verification failures.\n");
545			ret = warnings_fatal;
546		}
547
548		o->refill_buffers = 1;
549		if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
550		    !o->verify_interval)
551			o->verify_interval = o->min_bs[DDIR_WRITE];
552	}
553
554	if (o->pre_read) {
555		o->invalidate_cache = 0;
556		if (td->io_ops->flags & FIO_PIPEIO) {
557			log_info("fio: cannot pre-read files with an IO engine"
558				 " that isn't seekable. Pre-read disabled.\n");
559			ret = warnings_fatal;
560		}
561	}
562
563#ifndef CONFIG_FDATASYNC
564	if (o->fdatasync_blocks) {
565		log_info("fio: this platform does not support fdatasync()"
566			 " falling back to using fsync().  Use the 'fsync'"
567			 " option instead of 'fdatasync' to get rid of"
568			 " this warning\n");
569		o->fsync_blocks = o->fdatasync_blocks;
570		o->fdatasync_blocks = 0;
571		ret = warnings_fatal;
572	}
573#endif
574
575#ifdef WIN32
576	/*
577	 * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
578	 * so fail if we're passed those flags
579	 */
580	if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
581		log_err("fio: Windows does not support direct or non-buffered io with"
582				" the synchronous ioengines. Use the 'windowsaio' ioengine"
583				" with 'direct=1' and 'iodepth=1' instead.\n");
584		ret = 1;
585	}
586#endif
587
588	/*
589	 * For fully compressible data, just zero them at init time.
590	 * It's faster than repeatedly filling it.
591	 */
592	if (td->o.compress_percentage == 100) {
593		td->o.zero_buffers = 1;
594		td->o.compress_percentage = 0;
595	}
596
597	/*
598	 * Using a non-uniform random distribution excludes usage of
599	 * a random map
600	 */
601	if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
602		td->o.norandommap = 1;
603
604	return ret;
605}
606
607/*
608 * This function leaks the buffer
609 */
610static char *to_kmg(unsigned int val)
611{
612	char *buf = malloc(32);
613	char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
614	char *p = post;
615
616	do {
617		if (val & 1023)
618			break;
619
620		val >>= 10;
621		p++;
622	} while (*p);
623
624	snprintf(buf, 31, "%u%c", val, *p);
625	return buf;
626}
627
628/* External engines are specified by "external:name.o") */
629static const char *get_engine_name(const char *str)
630{
631	char *p = strstr(str, ":");
632
633	if (!p)
634		return str;
635
636	p++;
637	strip_blank_front(&p);
638	strip_blank_end(p);
639	return p;
640}
641
642static int exists_and_not_file(const char *filename)
643{
644	struct stat sb;
645
646	if (lstat(filename, &sb) == -1)
647		return 0;
648
649	/* \\.\ is the device namespace in Windows, where every file
650	 * is a device node */
651	if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
652		return 0;
653
654	return 1;
655}
656
657static void td_fill_rand_seeds_os(struct thread_data *td)
658{
659	os_random_seed(td->rand_seeds[FIO_RAND_BS_OFF], &td->bsrange_state);
660	os_random_seed(td->rand_seeds[FIO_RAND_VER_OFF], &td->verify_state);
661	os_random_seed(td->rand_seeds[FIO_RAND_MIX_OFF], &td->rwmix_state);
662
663	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
664		os_random_seed(td->rand_seeds[FIO_RAND_FILE_OFF], &td->next_file_state);
665
666	os_random_seed(td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], &td->file_size_state);
667	os_random_seed(td->rand_seeds[FIO_RAND_TRIM_OFF], &td->trim_state);
668
669	if (!td_random(td))
670		return;
671
672	if (td->o.rand_repeatable)
673		td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
674
675	os_random_seed(td->rand_seeds[FIO_RAND_BLOCK_OFF], &td->random_state);
676}
677
678static void td_fill_rand_seeds_internal(struct thread_data *td)
679{
680	init_rand_seed(&td->__bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
681	init_rand_seed(&td->__verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
682	init_rand_seed(&td->__rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
683
684	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
685		init_rand_seed(&td->__next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
686
687	init_rand_seed(&td->__file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
688	init_rand_seed(&td->__trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
689
690	if (!td_random(td))
691		return;
692
693	if (td->o.rand_repeatable)
694		td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
695
696	init_rand_seed(&td->__random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
697}
698
699void td_fill_rand_seeds(struct thread_data *td)
700{
701	if (td->o.use_os_rand)
702		td_fill_rand_seeds_os(td);
703	else
704		td_fill_rand_seeds_internal(td);
705
706	init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
707}
708
709/*
710 * Initializes the ioengine configured for a job, if it has not been done so
711 * already.
712 */
713int ioengine_load(struct thread_data *td)
714{
715	const char *engine;
716
717	/*
718	 * Engine has already been loaded.
719	 */
720	if (td->io_ops)
721		return 0;
722
723	engine = get_engine_name(td->o.ioengine);
724	td->io_ops = load_ioengine(td, engine);
725	if (!td->io_ops) {
726		log_err("fio: failed to load engine %s\n", engine);
727		return 1;
728	}
729
730	if (td->io_ops->option_struct_size && td->io_ops->options) {
731		/*
732		 * In cases where td->eo is set, clone it for a child thread.
733		 * This requires that the parent thread has the same ioengine,
734		 * but that requirement must be enforced by the code which
735		 * cloned the thread.
736		 */
737		void *origeo = td->eo;
738		/*
739		 * Otherwise use the default thread options.
740		 */
741		if (!origeo && td != &def_thread && def_thread.eo &&
742		    def_thread.io_ops->options == td->io_ops->options)
743			origeo = def_thread.eo;
744
745		options_init(td->io_ops->options);
746		td->eo = malloc(td->io_ops->option_struct_size);
747		/*
748		 * Use the default thread as an option template if this uses the
749		 * same options structure and there are non-default options
750		 * used.
751		 */
752		if (origeo) {
753			memcpy(td->eo, origeo, td->io_ops->option_struct_size);
754			options_mem_dupe(td->eo, td->io_ops->options);
755		} else {
756			memset(td->eo, 0, td->io_ops->option_struct_size);
757			fill_default_options(td->eo, td->io_ops->options);
758		}
759		*(struct thread_data **)td->eo = td;
760	}
761
762	return 0;
763}
764
765static void init_flags(struct thread_data *td)
766{
767	struct thread_options *o = &td->o;
768
769	if (o->verify_backlog)
770		td->flags |= TD_F_VER_BACKLOG;
771	if (o->trim_backlog)
772		td->flags |= TD_F_TRIM_BACKLOG;
773	if (o->read_iolog_file)
774		td->flags |= TD_F_READ_IOLOG;
775	if (o->refill_buffers)
776		td->flags |= TD_F_REFILL_BUFFERS;
777	if (o->scramble_buffers)
778		td->flags |= TD_F_SCRAMBLE_BUFFERS;
779	if (o->verify != VERIFY_NONE)
780		td->flags |= TD_F_VER_NONE;
781}
782
783static int setup_random_seeds(struct thread_data *td)
784{
785	unsigned long seed;
786	unsigned int i;
787
788	if (!td->o.rand_repeatable)
789		return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
790
791	for (seed = 0x89, i = 0; i < 4; i++)
792		seed *= 0x9e370001UL;
793
794	for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
795		td->rand_seeds[i] = seed;
796		seed *= 0x9e370001UL;
797	}
798
799	td_fill_rand_seeds(td);
800	return 0;
801}
802
803/*
804 * Adds a job to the list of things todo. Sanitizes the various options
805 * to make sure we don't have conflicts, and initializes various
806 * members of td.
807 */
808static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
809{
810	const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
811				   "randread", "randwrite", "randrw",
812				   "trim", NULL, NULL, NULL, "randtrim" };
813	unsigned int i;
814	char fname[PATH_MAX];
815	int numjobs, file_alloced;
816
817	/*
818	 * the def_thread is just for options, it's not a real job
819	 */
820	if (td == &def_thread)
821		return 0;
822
823	init_flags(td);
824
825	/*
826	 * if we are just dumping the output command line, don't add the job
827	 */
828	if (dump_cmdline) {
829		put_job(td);
830		return 0;
831	}
832
833	if (profile_td_init(td))
834		goto err;
835
836	if (ioengine_load(td))
837		goto err;
838
839	if (td->o.use_thread)
840		nr_thread++;
841	else
842		nr_process++;
843
844	if (td->o.odirect)
845		td->io_ops->flags |= FIO_RAWIO;
846
847	file_alloced = 0;
848	if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
849		file_alloced = 1;
850
851		if (td->o.nr_files == 1 && exists_and_not_file(jobname))
852			add_file(td, jobname);
853		else {
854			for (i = 0; i < td->o.nr_files; i++) {
855				sprintf(fname, "%s.%d.%d", jobname,
856							td->thread_number, i);
857				add_file(td, fname);
858			}
859		}
860	}
861
862	if (fixup_options(td))
863		goto err;
864
865	flow_init_job(td);
866
867	/*
868	 * IO engines only need this for option callbacks, and the address may
869	 * change in subprocesses.
870	 */
871	if (td->eo)
872		*(struct thread_data **)td->eo = NULL;
873
874	if (td->io_ops->flags & FIO_DISKLESSIO) {
875		struct fio_file *f;
876
877		for_each_file(td, f, i)
878			f->real_file_size = -1ULL;
879	}
880
881	td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
882
883	td->ts.clat_percentiles = td->o.clat_percentiles;
884	if (td->o.overwrite_plist)
885		memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
886	else
887		memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
888
889	for (i = 0; i < DDIR_RWDIR_CNT; i++) {
890		td->ts.clat_stat[i].min_val = ULONG_MAX;
891		td->ts.slat_stat[i].min_val = ULONG_MAX;
892		td->ts.lat_stat[i].min_val = ULONG_MAX;
893		td->ts.bw_stat[i].min_val = ULONG_MAX;
894	}
895	td->ddir_seq_nr = td->o.ddir_seq_nr;
896
897	if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
898		prev_group_jobs = 0;
899		groupid++;
900	}
901
902	td->groupid = groupid;
903	prev_group_jobs++;
904
905	if (setup_random_seeds(td)) {
906		td_verror(td, errno, "init_random_state");
907		goto err;
908	}
909
910	if (setup_rate(td))
911		goto err;
912
913	if (td->o.write_lat_log) {
914		setup_log(&td->lat_log, td->o.log_avg_msec);
915		setup_log(&td->slat_log, td->o.log_avg_msec);
916		setup_log(&td->clat_log, td->o.log_avg_msec);
917	}
918	if (td->o.write_bw_log)
919		setup_log(&td->bw_log, td->o.log_avg_msec);
920	if (td->o.write_iops_log)
921		setup_log(&td->iops_log, td->o.log_avg_msec);
922
923	if (!td->o.name)
924		td->o.name = strdup(jobname);
925
926	if (output_format == FIO_OUTPUT_NORMAL) {
927		if (!job_add_num) {
928			if (!strcmp(td->io_ops->name, "cpuio")) {
929				log_info("%s: ioengine=cpu, cpuload=%u,"
930					 " cpucycle=%u\n", td->o.name,
931							td->o.cpuload,
932							td->o.cpucycle);
933			} else {
934				char *c1, *c2, *c3, *c4, *c5, *c6;
935
936				c1 = to_kmg(td->o.min_bs[DDIR_READ]);
937				c2 = to_kmg(td->o.max_bs[DDIR_READ]);
938				c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
939				c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
940				c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
941				c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
942
943				log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
944					 " ioengine=%s, iodepth=%u\n",
945						td->o.name, td->groupid,
946						ddir_str[td->o.td_ddir],
947						c1, c2, c3, c4, c5, c6,
948						td->io_ops->name,
949						td->o.iodepth);
950
951				free(c1);
952				free(c2);
953				free(c3);
954				free(c4);
955				free(c5);
956				free(c6);
957			}
958		} else if (job_add_num == 1)
959			log_info("...\n");
960	}
961
962	/*
963	 * recurse add identical jobs, clear numjobs and stonewall options
964	 * as they don't apply to sub-jobs
965	 */
966	numjobs = td->o.numjobs;
967	while (--numjobs) {
968		struct thread_data *td_new = get_new_job(0, td, 1);
969
970		if (!td_new)
971			goto err;
972
973		td_new->o.numjobs = 1;
974		td_new->o.stonewall = 0;
975		td_new->o.new_group = 0;
976
977		if (file_alloced) {
978			td_new->o.filename = NULL;
979			td_new->files_index = 0;
980			td_new->files_size = 0;
981			td_new->files = NULL;
982		}
983
984		job_add_num = numjobs - 1;
985
986		if (add_job(td_new, jobname, job_add_num))
987			goto err;
988	}
989
990	return 0;
991err:
992	put_job(td);
993	return -1;
994}
995
996/*
997 * Parse as if 'o' was a command line
998 */
999void add_job_opts(const char **o)
1000{
1001	struct thread_data *td, *td_parent;
1002	int i, in_global = 1;
1003	char jobname[32];
1004
1005	i = 0;
1006	td_parent = td = NULL;
1007	while (o[i]) {
1008		if (!strncmp(o[i], "name", 4)) {
1009			in_global = 0;
1010			if (td)
1011				add_job(td, jobname, 0);
1012			td = NULL;
1013			sprintf(jobname, "%s", o[i] + 5);
1014		}
1015		if (in_global && !td_parent)
1016			td_parent = get_new_job(1, &def_thread, 0);
1017		else if (!in_global && !td) {
1018			if (!td_parent)
1019				td_parent = &def_thread;
1020			td = get_new_job(0, td_parent, 0);
1021		}
1022		if (in_global)
1023			fio_options_parse(td_parent, (char **) &o[i], 1);
1024		else
1025			fio_options_parse(td, (char **) &o[i], 1);
1026		i++;
1027	}
1028
1029	if (td)
1030		add_job(td, jobname, 0);
1031}
1032
1033static int skip_this_section(const char *name)
1034{
1035	int i;
1036
1037	if (!nr_job_sections)
1038		return 0;
1039	if (!strncmp(name, "global", 6))
1040		return 0;
1041
1042	for (i = 0; i < nr_job_sections; i++)
1043		if (!strcmp(job_sections[i], name))
1044			return 0;
1045
1046	return 1;
1047}
1048
1049static int is_empty_or_comment(char *line)
1050{
1051	unsigned int i;
1052
1053	for (i = 0; i < strlen(line); i++) {
1054		if (line[i] == ';')
1055			return 1;
1056		if (line[i] == '#')
1057			return 1;
1058		if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1059			return 0;
1060	}
1061
1062	return 1;
1063}
1064
1065/*
1066 * This is our [ini] type file parser.
1067 */
1068int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1069{
1070	unsigned int global;
1071	struct thread_data *td;
1072	char *string, *name;
1073	FILE *f;
1074	char *p;
1075	int ret = 0, stonewall;
1076	int first_sect = 1;
1077	int skip_fgets = 0;
1078	int inside_skip = 0;
1079	char **opts;
1080	int i, alloc_opts, num_opts;
1081
1082	if (is_buf)
1083		f = NULL;
1084	else {
1085		if (!strcmp(file, "-"))
1086			f = stdin;
1087		else
1088			f = fopen(file, "r");
1089
1090		if (!f) {
1091			perror("fopen job file");
1092			return 1;
1093		}
1094	}
1095
1096	string = malloc(4096);
1097
1098	/*
1099	 * it's really 256 + small bit, 280 should suffice
1100	 */
1101	name = malloc(280);
1102	memset(name, 0, 280);
1103
1104	alloc_opts = 8;
1105	opts = malloc(sizeof(char *) * alloc_opts);
1106	num_opts = 0;
1107
1108	stonewall = stonewall_flag;
1109	do {
1110		/*
1111		 * if skip_fgets is set, we already have loaded a line we
1112		 * haven't handled.
1113		 */
1114		if (!skip_fgets) {
1115			if (is_buf)
1116				p = strsep(&file, "\n");
1117			else
1118				p = fgets(string, 4096, f);
1119			if (!p)
1120				break;
1121		}
1122
1123		skip_fgets = 0;
1124		strip_blank_front(&p);
1125		strip_blank_end(p);
1126
1127		if (is_empty_or_comment(p))
1128			continue;
1129		if (sscanf(p, "[%255[^\n]]", name) != 1) {
1130			if (inside_skip)
1131				continue;
1132			log_err("fio: option <%s> outside of [] job section\n",
1133									p);
1134			break;
1135		}
1136
1137		name[strlen(name) - 1] = '\0';
1138
1139		if (skip_this_section(name)) {
1140			inside_skip = 1;
1141			continue;
1142		} else
1143			inside_skip = 0;
1144
1145		global = !strncmp(name, "global", 6);
1146
1147		if (dump_cmdline) {
1148			if (first_sect)
1149				log_info("fio ");
1150			if (!global)
1151				log_info("--name=%s ", name);
1152			first_sect = 0;
1153		}
1154
1155		td = get_new_job(global, &def_thread, 0);
1156		if (!td) {
1157			ret = 1;
1158			break;
1159		}
1160
1161		/*
1162		 * Seperate multiple job files by a stonewall
1163		 */
1164		if (!global && stonewall) {
1165			td->o.stonewall = stonewall;
1166			stonewall = 0;
1167		}
1168
1169		num_opts = 0;
1170		memset(opts, 0, alloc_opts * sizeof(char *));
1171
1172		while (1) {
1173			if (is_buf)
1174				p = strsep(&file, "\n");
1175			else
1176				p = fgets(string, 4096, f);
1177			if (!p)
1178				break;
1179
1180			if (is_empty_or_comment(p))
1181				continue;
1182
1183			strip_blank_front(&p);
1184
1185			/*
1186			 * new section, break out and make sure we don't
1187			 * fgets() a new line at the top.
1188			 */
1189			if (p[0] == '[') {
1190				skip_fgets = 1;
1191				break;
1192			}
1193
1194			strip_blank_end(p);
1195
1196			if (num_opts == alloc_opts) {
1197				alloc_opts <<= 1;
1198				opts = realloc(opts,
1199						alloc_opts * sizeof(char *));
1200			}
1201
1202			opts[num_opts] = strdup(p);
1203			num_opts++;
1204		}
1205
1206		ret = fio_options_parse(td, opts, num_opts);
1207		if (!ret) {
1208			if (dump_cmdline)
1209				for (i = 0; i < num_opts; i++)
1210					log_info("--%s ", opts[i]);
1211
1212			ret = add_job(td, name, 0);
1213		} else {
1214			log_err("fio: job %s dropped\n", name);
1215			put_job(td);
1216		}
1217
1218		for (i = 0; i < num_opts; i++)
1219			free(opts[i]);
1220		num_opts = 0;
1221	} while (!ret);
1222
1223	if (dump_cmdline)
1224		log_info("\n");
1225
1226	i = 0;
1227	while (i < nr_job_sections) {
1228		free(job_sections[i]);
1229		i++;
1230	}
1231
1232	for (i = 0; i < num_opts; i++)
1233		free(opts[i]);
1234
1235	free(string);
1236	free(name);
1237	free(opts);
1238	if (!is_buf && f != stdin)
1239		fclose(f);
1240	return ret;
1241}
1242
1243static int fill_def_thread(void)
1244{
1245	memset(&def_thread, 0, sizeof(def_thread));
1246
1247	fio_getaffinity(getpid(), &def_thread.o.cpumask);
1248	def_thread.o.timeout = def_timeout;
1249	def_thread.o.error_dump = 1;
1250	/*
1251	 * fill default options
1252	 */
1253	fio_fill_default_options(&def_thread);
1254	return 0;
1255}
1256
1257static void usage(const char *name)
1258{
1259	printf("%s\n", fio_version_string);
1260	printf("%s [options] [job options] <job file(s)>\n", name);
1261	printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1262		"\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1263		"\t\t\tdiskutil,job,mutex,profile,time,net\n");
1264	printf("  --output\t\tWrite output to file\n");
1265	printf("  --runtime\t\tRuntime in seconds\n");
1266	printf("  --latency-log\t\tGenerate per-job latency logs\n");
1267	printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1268	printf("  --minimal\t\tMinimal (terse) output\n");
1269	printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1270	printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1271	printf("  --version\t\tPrint version info and exit\n");
1272	printf("  --help\t\tPrint this page\n");
1273	printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1274	printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1275		" them\n");
1276	printf("  --enghelp=engine\tPrint ioengine help, or list"
1277		" available ioengines\n");
1278	printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1279		" cmd\n");
1280	printf("  --showcmd\t\tTurn a job file into command line options\n");
1281	printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1282	printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1283	printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1284		" writes\n");
1285	printf("  --section=name\tOnly run specified section in job file\n");
1286	printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1287		" (def 1024)\n");
1288	printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1289	printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1290	printf("  --server=args\t\tStart a backend fio server\n");
1291	printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1292	printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1293	printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1294	printf("\n                   Jens Axboe <jaxboe@fusionio.com>\n");
1295}
1296
1297#ifdef FIO_INC_DEBUG
1298struct debug_level debug_levels[] = {
1299	{ .name = "process",	.shift = FD_PROCESS, },
1300	{ .name = "file",	.shift = FD_FILE, },
1301	{ .name = "io",		.shift = FD_IO, },
1302	{ .name = "mem",	.shift = FD_MEM, },
1303	{ .name = "blktrace",	.shift = FD_BLKTRACE },
1304	{ .name = "verify",	.shift = FD_VERIFY },
1305	{ .name = "random",	.shift = FD_RANDOM },
1306	{ .name = "parse",	.shift = FD_PARSE },
1307	{ .name = "diskutil",	.shift = FD_DISKUTIL },
1308	{ .name = "job",	.shift = FD_JOB },
1309	{ .name = "mutex",	.shift = FD_MUTEX },
1310	{ .name	= "profile",	.shift = FD_PROFILE },
1311	{ .name = "time",	.shift = FD_TIME },
1312	{ .name = "net",	.shift = FD_NET },
1313	{ .name = NULL, },
1314};
1315
1316static int set_debug(const char *string)
1317{
1318	struct debug_level *dl;
1319	char *p = (char *) string;
1320	char *opt;
1321	int i;
1322
1323	if (!strcmp(string, "?") || !strcmp(string, "help")) {
1324		log_info("fio: dumping debug options:");
1325		for (i = 0; debug_levels[i].name; i++) {
1326			dl = &debug_levels[i];
1327			log_info("%s,", dl->name);
1328		}
1329		log_info("all\n");
1330		return 1;
1331	}
1332
1333	while ((opt = strsep(&p, ",")) != NULL) {
1334		int found = 0;
1335
1336		if (!strncmp(opt, "all", 3)) {
1337			log_info("fio: set all debug options\n");
1338			fio_debug = ~0UL;
1339			continue;
1340		}
1341
1342		for (i = 0; debug_levels[i].name; i++) {
1343			dl = &debug_levels[i];
1344			found = !strncmp(opt, dl->name, strlen(dl->name));
1345			if (!found)
1346				continue;
1347
1348			if (dl->shift == FD_JOB) {
1349				opt = strchr(opt, ':');
1350				if (!opt) {
1351					log_err("fio: missing job number\n");
1352					break;
1353				}
1354				opt++;
1355				fio_debug_jobno = atoi(opt);
1356				log_info("fio: set debug jobno %d\n",
1357							fio_debug_jobno);
1358			} else {
1359				log_info("fio: set debug option %s\n", opt);
1360				fio_debug |= (1UL << dl->shift);
1361			}
1362			break;
1363		}
1364
1365		if (!found)
1366			log_err("fio: debug mask %s not found\n", opt);
1367	}
1368	return 0;
1369}
1370#else
1371static int set_debug(const char *string)
1372{
1373	log_err("fio: debug tracing not included in build\n");
1374	return 1;
1375}
1376#endif
1377
1378static void fio_options_fill_optstring(void)
1379{
1380	char *ostr = cmd_optstr;
1381	int i, c;
1382
1383	c = i = 0;
1384	while (l_opts[i].name) {
1385		ostr[c++] = l_opts[i].val;
1386		if (l_opts[i].has_arg == required_argument)
1387			ostr[c++] = ':';
1388		else if (l_opts[i].has_arg == optional_argument) {
1389			ostr[c++] = ':';
1390			ostr[c++] = ':';
1391		}
1392		i++;
1393	}
1394	ostr[c] = '\0';
1395}
1396
1397static int client_flag_set(char c)
1398{
1399	int i;
1400
1401	i = 0;
1402	while (l_opts[i].name) {
1403		int val = l_opts[i].val;
1404
1405		if (c == (val & 0xff))
1406			return (val & FIO_CLIENT_FLAG);
1407
1408		i++;
1409	}
1410
1411	return 0;
1412}
1413
1414void parse_cmd_client(void *client, char *opt)
1415{
1416	fio_client_add_cmd_option(client, opt);
1417}
1418
1419int parse_cmd_line(int argc, char *argv[])
1420{
1421	struct thread_data *td = NULL;
1422	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1423	char *ostr = cmd_optstr;
1424	void *pid_file = NULL;
1425	void *cur_client = NULL;
1426	int backend = 0;
1427
1428	/*
1429	 * Reset optind handling, since we may call this multiple times
1430	 * for the backend.
1431	 */
1432	optind = 1;
1433
1434	while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1435		did_arg = 1;
1436
1437		if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1438			parse_cmd_client(cur_client, argv[optind - 1]);
1439			c &= ~FIO_CLIENT_FLAG;
1440		}
1441
1442		switch (c) {
1443		case 'a':
1444			smalloc_pool_size = atoi(optarg);
1445			break;
1446		case 't':
1447			def_timeout = atoi(optarg);
1448			break;
1449		case 'l':
1450			write_lat_log = 1;
1451			break;
1452		case 'b':
1453			write_bw_log = 1;
1454			break;
1455		case 'o':
1456			f_out = fopen(optarg, "w+");
1457			if (!f_out) {
1458				perror("fopen output");
1459				exit(1);
1460			}
1461			f_err = f_out;
1462			break;
1463		case 'm':
1464			output_format = FIO_OUTPUT_TERSE;
1465			break;
1466		case 'F':
1467			if (!strcmp(optarg, "minimal") ||
1468			    !strcmp(optarg, "terse") ||
1469			    !strcmp(optarg, "csv"))
1470				output_format = FIO_OUTPUT_TERSE;
1471			else if (!strcmp(optarg, "json"))
1472				output_format = FIO_OUTPUT_JSON;
1473			else
1474				output_format = FIO_OUTPUT_NORMAL;
1475			break;
1476		case 'h':
1477			if (!cur_client) {
1478				usage(argv[0]);
1479				do_exit++;
1480			}
1481			break;
1482		case 'c':
1483			if (!cur_client) {
1484				fio_show_option_help(optarg);
1485				do_exit++;
1486			}
1487			break;
1488		case 'i':
1489			if (!cur_client) {
1490				fio_show_ioengine_help(optarg);
1491				do_exit++;
1492			}
1493			break;
1494		case 's':
1495			dump_cmdline = 1;
1496			break;
1497		case 'r':
1498			read_only = 1;
1499			break;
1500		case 'v':
1501			if (!cur_client) {
1502				log_info("%s\n", fio_version_string);
1503				do_exit++;
1504			}
1505			break;
1506		case 'V':
1507			terse_version = atoi(optarg);
1508			if (!(terse_version == 2 || terse_version == 3 ||
1509			     terse_version == 4)) {
1510				log_err("fio: bad terse version format\n");
1511				exit_val = 1;
1512				do_exit++;
1513			}
1514			break;
1515		case 'e':
1516			if (!strcmp("always", optarg))
1517				eta_print = FIO_ETA_ALWAYS;
1518			else if (!strcmp("never", optarg))
1519				eta_print = FIO_ETA_NEVER;
1520			break;
1521		case 'd':
1522			if (set_debug(optarg))
1523				do_exit++;
1524			break;
1525		case 'x': {
1526			size_t new_size;
1527
1528			if (!strcmp(optarg, "global")) {
1529				log_err("fio: can't use global as only "
1530					"section\n");
1531				do_exit++;
1532				exit_val = 1;
1533				break;
1534			}
1535			new_size = (nr_job_sections + 1) * sizeof(char *);
1536			job_sections = realloc(job_sections, new_size);
1537			job_sections[nr_job_sections] = strdup(optarg);
1538			nr_job_sections++;
1539			break;
1540			}
1541		case 'p':
1542			exec_profile = strdup(optarg);
1543			break;
1544		case FIO_GETOPT_JOB: {
1545			const char *opt = l_opts[lidx].name;
1546			char *val = optarg;
1547
1548			if (!strncmp(opt, "name", 4) && td) {
1549				ret = add_job(td, td->o.name ?: "fio", 0);
1550				if (ret)
1551					return 0;
1552				td = NULL;
1553			}
1554			if (!td) {
1555				int is_section = !strncmp(opt, "name", 4);
1556				int global = 0;
1557
1558				if (!is_section || !strncmp(val, "global", 6))
1559					global = 1;
1560
1561				if (is_section && skip_this_section(val))
1562					continue;
1563
1564				td = get_new_job(global, &def_thread, 1);
1565				if (!td || ioengine_load(td))
1566					return 0;
1567				fio_options_set_ioengine_opts(l_opts, td);
1568			}
1569
1570			ret = fio_cmd_option_parse(td, opt, val);
1571
1572			if (!ret && !strcmp(opt, "ioengine")) {
1573				free_ioengine(td);
1574				if (ioengine_load(td))
1575					return 0;
1576				fio_options_set_ioengine_opts(l_opts, td);
1577			}
1578			break;
1579		}
1580		case FIO_GETOPT_IOENGINE: {
1581			const char *opt = l_opts[lidx].name;
1582			char *val = optarg;
1583			opt = l_opts[lidx].name;
1584			val = optarg;
1585			ret = fio_cmd_ioengine_option_parse(td, opt, val);
1586			break;
1587		}
1588		case 'w':
1589			warnings_fatal = 1;
1590			break;
1591		case 'j':
1592			max_jobs = atoi(optarg);
1593			if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1594				log_err("fio: invalid max jobs: %d\n", max_jobs);
1595				do_exit++;
1596				exit_val = 1;
1597			}
1598			break;
1599		case 'S':
1600			if (nr_clients) {
1601				log_err("fio: can't be both client and server\n");
1602				do_exit++;
1603				exit_val = 1;
1604				break;
1605			}
1606			if (optarg)
1607				fio_server_set_arg(optarg);
1608			is_backend = 1;
1609			backend = 1;
1610			break;
1611		case 'D':
1612			pid_file = strdup(optarg);
1613			break;
1614		case 'C':
1615			if (is_backend) {
1616				log_err("fio: can't be both client and server\n");
1617				do_exit++;
1618				exit_val = 1;
1619				break;
1620			}
1621			if (fio_client_add(optarg, &cur_client)) {
1622				log_err("fio: failed adding client %s\n", optarg);
1623				do_exit++;
1624				exit_val = 1;
1625				break;
1626			}
1627			/*
1628			 * If the next argument exists and isn't an option,
1629			 * assume it's a job file for this client only.
1630			 */
1631			while (optind < argc) {
1632				if (!strncmp(argv[optind], "--", 2) ||
1633				    !strncmp(argv[optind], "-", 1))
1634					break;
1635
1636				fio_client_add_ini_file(cur_client, argv[optind]);
1637				optind++;
1638			}
1639			break;
1640		case 'T':
1641			do_exit++;
1642			exit_val = fio_monotonic_clocktest();
1643			break;
1644		case '?':
1645			log_err("%s: unrecognized option '%s'\n", argv[0],
1646							argv[optind - 1]);
1647		default:
1648			do_exit++;
1649			exit_val = 1;
1650			break;
1651		}
1652		if (do_exit)
1653			break;
1654	}
1655
1656	if (do_exit) {
1657		if (exit_val && !(is_backend || nr_clients))
1658			exit(exit_val);
1659	}
1660
1661	if (nr_clients && fio_clients_connect()) {
1662		do_exit++;
1663		exit_val = 1;
1664		return -1;
1665	}
1666
1667	if (is_backend && backend)
1668		return fio_start_server(pid_file);
1669
1670	if (td) {
1671		if (!ret)
1672			ret = add_job(td, td->o.name ?: "fio", 0);
1673	}
1674
1675	while (!ret && optind < argc) {
1676		ini_idx++;
1677		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1678		ini_file[ini_idx - 1] = strdup(argv[optind]);
1679		optind++;
1680	}
1681
1682	return ini_idx;
1683}
1684
1685int parse_options(int argc, char *argv[])
1686{
1687	int job_files, i;
1688
1689	f_out = stdout;
1690	f_err = stderr;
1691
1692	fio_options_fill_optstring();
1693	fio_options_dup_and_init(l_opts);
1694
1695	atexit(free_shm);
1696
1697	if (fill_def_thread())
1698		return 1;
1699
1700	job_files = parse_cmd_line(argc, argv);
1701
1702	if (job_files > 0) {
1703		for (i = 0; i < job_files; i++) {
1704			if (fill_def_thread())
1705				return 1;
1706			if (nr_clients) {
1707				if (fio_clients_send_ini(ini_file[i]))
1708					return 1;
1709				free(ini_file[i]);
1710			} else if (!is_backend) {
1711				if (parse_jobs_ini(ini_file[i], 0, i))
1712					return 1;
1713				free(ini_file[i]);
1714			}
1715		}
1716	} else if (nr_clients) {
1717		if (fill_def_thread())
1718			return 1;
1719		if (fio_clients_send_ini(NULL))
1720			return 1;
1721	}
1722
1723	free(ini_file);
1724	fio_options_free(&def_thread);
1725
1726	if (!thread_number) {
1727		if (dump_cmdline)
1728			return 0;
1729		if (exec_profile)
1730			return 0;
1731		if (is_backend || nr_clients)
1732			return 0;
1733		if (did_arg)
1734			return 0;
1735
1736		log_err("No jobs(s) defined\n\n");
1737
1738		if (!did_arg) {
1739			usage(argv[0]);
1740			return 1;
1741		}
1742
1743		return 0;
1744	}
1745
1746	if (def_thread.o.gtod_offload) {
1747		fio_gtod_init();
1748		fio_gtod_offload = 1;
1749		fio_gtod_cpu = def_thread.o.gtod_cpu;
1750	}
1751
1752	if (output_format == FIO_OUTPUT_NORMAL)
1753		log_info("%s\n", fio_version_string);
1754
1755	return 0;
1756}
1757