init.c revision 67bf982340d95ca98098ea050b54b4c7adb116c0 
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/*
711 * Initializes the ioengine configured for a job, if it has not been done so
712 * already.
713 */
714int ioengine_load(struct thread_data *td)
715{
716	const char *engine;
717
718	/*
719	 * Engine has already been loaded.
720	 */
721	if (td->io_ops)
722		return 0;
723
724	engine = get_engine_name(td->o.ioengine);
725	td->io_ops = load_ioengine(td, engine);
726	if (!td->io_ops) {
727		log_err("fio: failed to load engine %s\n", engine);
728		return 1;
729	}
730
731	if (td->io_ops->option_struct_size && td->io_ops->options) {
732		/*
733		 * In cases where td->eo is set, clone it for a child thread.
734		 * This requires that the parent thread has the same ioengine,
735		 * but that requirement must be enforced by the code which
736		 * cloned the thread.
737		 */
738		void *origeo = td->eo;
739		/*
740		 * Otherwise use the default thread options.
741		 */
742		if (!origeo && td != &def_thread && def_thread.eo &&
743		    def_thread.io_ops->options == td->io_ops->options)
744			origeo = def_thread.eo;
745
746		options_init(td->io_ops->options);
747		td->eo = malloc(td->io_ops->option_struct_size);
748		/*
749		 * Use the default thread as an option template if this uses the
750		 * same options structure and there are non-default options
751		 * used.
752		 */
753		if (origeo) {
754			memcpy(td->eo, origeo, td->io_ops->option_struct_size);
755			options_mem_dupe(td->eo, td->io_ops->options);
756		} else {
757			memset(td->eo, 0, td->io_ops->option_struct_size);
758			fill_default_options(td->eo, td->io_ops->options);
759		}
760		*(struct thread_data **)td->eo = td;
761	}
762
763	return 0;
764}
765
766static void init_flags(struct thread_data *td)
767{
768	struct thread_options *o = &td->o;
769
770	if (o->verify_backlog)
771		td->flags |= TD_F_VER_BACKLOG;
772	if (o->trim_backlog)
773		td->flags |= TD_F_TRIM_BACKLOG;
774	if (o->read_iolog_file)
775		td->flags |= TD_F_READ_IOLOG;
776	if (o->refill_buffers)
777		td->flags |= TD_F_REFILL_BUFFERS;
778	if (o->scramble_buffers)
779		td->flags |= TD_F_SCRAMBLE_BUFFERS;
780	if (o->verify != VERIFY_NONE)
781		td->flags |= TD_F_VER_NONE;
782}
783
784/*
785 * Adds a job to the list of things todo. Sanitizes the various options
786 * to make sure we don't have conflicts, and initializes various
787 * members of td.
788 */
789static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
790{
791	const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
792				   "randread", "randwrite", "randrw",
793				   "trim", NULL, NULL, NULL, "randtrim" };
794	unsigned int i;
795	char fname[PATH_MAX];
796	int numjobs, file_alloced;
797
798	/*
799	 * the def_thread is just for options, it's not a real job
800	 */
801	if (td == &def_thread)
802		return 0;
803
804	init_flags(td);
805
806	/*
807	 * if we are just dumping the output command line, don't add the job
808	 */
809	if (dump_cmdline) {
810		put_job(td);
811		return 0;
812	}
813
814	if (profile_td_init(td))
815		goto err;
816
817	if (ioengine_load(td))
818		goto err;
819
820	if (td->o.use_thread)
821		nr_thread++;
822	else
823		nr_process++;
824
825	if (td->o.odirect)
826		td->io_ops->flags |= FIO_RAWIO;
827
828	file_alloced = 0;
829	if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
830		file_alloced = 1;
831
832		if (td->o.nr_files == 1 && exists_and_not_file(jobname))
833			add_file(td, jobname);
834		else {
835			for (i = 0; i < td->o.nr_files; i++) {
836				sprintf(fname, "%s.%d.%d", jobname,
837							td->thread_number, i);
838				add_file(td, fname);
839			}
840		}
841	}
842
843	if (fixup_options(td))
844		goto err;
845
846	flow_init_job(td);
847
848	/*
849	 * IO engines only need this for option callbacks, and the address may
850	 * change in subprocesses.
851	 */
852	if (td->eo)
853		*(struct thread_data **)td->eo = NULL;
854
855	if (td->io_ops->flags & FIO_DISKLESSIO) {
856		struct fio_file *f;
857
858		for_each_file(td, f, i)
859			f->real_file_size = -1ULL;
860	}
861
862	td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
863
864	td->ts.clat_percentiles = td->o.clat_percentiles;
865	if (td->o.overwrite_plist)
866		memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
867	else
868		memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
869
870	for (i = 0; i < DDIR_RWDIR_CNT; i++) {
871		td->ts.clat_stat[i].min_val = ULONG_MAX;
872		td->ts.slat_stat[i].min_val = ULONG_MAX;
873		td->ts.lat_stat[i].min_val = ULONG_MAX;
874		td->ts.bw_stat[i].min_val = ULONG_MAX;
875	}
876	td->ddir_seq_nr = td->o.ddir_seq_nr;
877
878	if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
879		prev_group_jobs = 0;
880		groupid++;
881	}
882
883	td->groupid = groupid;
884	prev_group_jobs++;
885
886	if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
887		td_verror(td, errno, "init_random_state");
888		goto err;
889	}
890
891	if (setup_rate(td))
892		goto err;
893
894	if (td->o.write_lat_log) {
895		setup_log(&td->lat_log, td->o.log_avg_msec);
896		setup_log(&td->slat_log, td->o.log_avg_msec);
897		setup_log(&td->clat_log, td->o.log_avg_msec);
898	}
899	if (td->o.write_bw_log)
900		setup_log(&td->bw_log, td->o.log_avg_msec);
901	if (td->o.write_iops_log)
902		setup_log(&td->iops_log, td->o.log_avg_msec);
903
904	if (!td->o.name)
905		td->o.name = strdup(jobname);
906
907	if (output_format == FIO_OUTPUT_NORMAL) {
908		if (!job_add_num) {
909			if (!strcmp(td->io_ops->name, "cpuio")) {
910				log_info("%s: ioengine=cpu, cpuload=%u,"
911					 " cpucycle=%u\n", td->o.name,
912							td->o.cpuload,
913							td->o.cpucycle);
914			} else {
915				char *c1, *c2, *c3, *c4, *c5, *c6;
916
917				c1 = to_kmg(td->o.min_bs[DDIR_READ]);
918				c2 = to_kmg(td->o.max_bs[DDIR_READ]);
919				c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
920				c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
921				c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
922				c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
923
924				log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
925					 " ioengine=%s, iodepth=%u\n",
926						td->o.name, td->groupid,
927						ddir_str[td->o.td_ddir],
928						c1, c2, c3, c4, c5, c6,
929						td->io_ops->name,
930						td->o.iodepth);
931
932				free(c1);
933				free(c2);
934				free(c3);
935				free(c4);
936				free(c5);
937				free(c6);
938			}
939		} else if (job_add_num == 1)
940			log_info("...\n");
941	}
942
943	/*
944	 * recurse add identical jobs, clear numjobs and stonewall options
945	 * as they don't apply to sub-jobs
946	 */
947	numjobs = td->o.numjobs;
948	while (--numjobs) {
949		struct thread_data *td_new = get_new_job(0, td, 1);
950
951		if (!td_new)
952			goto err;
953
954		td_new->o.numjobs = 1;
955		td_new->o.stonewall = 0;
956		td_new->o.new_group = 0;
957
958		if (file_alloced) {
959			td_new->o.filename = NULL;
960			td_new->files_index = 0;
961			td_new->files_size = 0;
962			td_new->files = NULL;
963		}
964
965		job_add_num = numjobs - 1;
966
967		if (add_job(td_new, jobname, job_add_num))
968			goto err;
969	}
970
971	return 0;
972err:
973	put_job(td);
974	return -1;
975}
976
977/*
978 * Parse as if 'o' was a command line
979 */
980void add_job_opts(const char **o)
981{
982	struct thread_data *td, *td_parent;
983	int i, in_global = 1;
984	char jobname[32];
985
986	i = 0;
987	td_parent = td = NULL;
988	while (o[i]) {
989		if (!strncmp(o[i], "name", 4)) {
990			in_global = 0;
991			if (td)
992				add_job(td, jobname, 0);
993			td = NULL;
994			sprintf(jobname, "%s", o[i] + 5);
995		}
996		if (in_global && !td_parent)
997			td_parent = get_new_job(1, &def_thread, 0);
998		else if (!in_global && !td) {
999			if (!td_parent)
1000				td_parent = &def_thread;
1001			td = get_new_job(0, td_parent, 0);
1002		}
1003		if (in_global)
1004			fio_options_parse(td_parent, (char **) &o[i], 1);
1005		else
1006			fio_options_parse(td, (char **) &o[i], 1);
1007		i++;
1008	}
1009
1010	if (td)
1011		add_job(td, jobname, 0);
1012}
1013
1014static int skip_this_section(const char *name)
1015{
1016	int i;
1017
1018	if (!nr_job_sections)
1019		return 0;
1020	if (!strncmp(name, "global", 6))
1021		return 0;
1022
1023	for (i = 0; i < nr_job_sections; i++)
1024		if (!strcmp(job_sections[i], name))
1025			return 0;
1026
1027	return 1;
1028}
1029
1030static int is_empty_or_comment(char *line)
1031{
1032	unsigned int i;
1033
1034	for (i = 0; i < strlen(line); i++) {
1035		if (line[i] == ';')
1036			return 1;
1037		if (line[i] == '#')
1038			return 1;
1039		if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1040			return 0;
1041	}
1042
1043	return 1;
1044}
1045
1046/*
1047 * This is our [ini] type file parser.
1048 */
1049int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1050{
1051	unsigned int global;
1052	struct thread_data *td;
1053	char *string, *name;
1054	FILE *f;
1055	char *p;
1056	int ret = 0, stonewall;
1057	int first_sect = 1;
1058	int skip_fgets = 0;
1059	int inside_skip = 0;
1060	char **opts;
1061	int i, alloc_opts, num_opts;
1062
1063	if (is_buf)
1064		f = NULL;
1065	else {
1066		if (!strcmp(file, "-"))
1067			f = stdin;
1068		else
1069			f = fopen(file, "r");
1070
1071		if (!f) {
1072			perror("fopen job file");
1073			return 1;
1074		}
1075	}
1076
1077	string = malloc(4096);
1078
1079	/*
1080	 * it's really 256 + small bit, 280 should suffice
1081	 */
1082	name = malloc(280);
1083	memset(name, 0, 280);
1084
1085	alloc_opts = 8;
1086	opts = malloc(sizeof(char *) * alloc_opts);
1087	num_opts = 0;
1088
1089	stonewall = stonewall_flag;
1090	do {
1091		/*
1092		 * if skip_fgets is set, we already have loaded a line we
1093		 * haven't handled.
1094		 */
1095		if (!skip_fgets) {
1096			if (is_buf)
1097				p = strsep(&file, "\n");
1098			else
1099				p = fgets(string, 4096, f);
1100			if (!p)
1101				break;
1102		}
1103
1104		skip_fgets = 0;
1105		strip_blank_front(&p);
1106		strip_blank_end(p);
1107
1108		if (is_empty_or_comment(p))
1109			continue;
1110		if (sscanf(p, "[%255[^\n]]", name) != 1) {
1111			if (inside_skip)
1112				continue;
1113			log_err("fio: option <%s> outside of [] job section\n",
1114									p);
1115			break;
1116		}
1117
1118		name[strlen(name) - 1] = '\0';
1119
1120		if (skip_this_section(name)) {
1121			inside_skip = 1;
1122			continue;
1123		} else
1124			inside_skip = 0;
1125
1126		global = !strncmp(name, "global", 6);
1127
1128		if (dump_cmdline) {
1129			if (first_sect)
1130				log_info("fio ");
1131			if (!global)
1132				log_info("--name=%s ", name);
1133			first_sect = 0;
1134		}
1135
1136		td = get_new_job(global, &def_thread, 0);
1137		if (!td) {
1138			ret = 1;
1139			break;
1140		}
1141
1142		/*
1143		 * Seperate multiple job files by a stonewall
1144		 */
1145		if (!global && stonewall) {
1146			td->o.stonewall = stonewall;
1147			stonewall = 0;
1148		}
1149
1150		num_opts = 0;
1151		memset(opts, 0, alloc_opts * sizeof(char *));
1152
1153		while (1) {
1154			if (is_buf)
1155				p = strsep(&file, "\n");
1156			else
1157				p = fgets(string, 4096, f);
1158			if (!p)
1159				break;
1160
1161			if (is_empty_or_comment(p))
1162				continue;
1163
1164			strip_blank_front(&p);
1165
1166			/*
1167			 * new section, break out and make sure we don't
1168			 * fgets() a new line at the top.
1169			 */
1170			if (p[0] == '[') {
1171				skip_fgets = 1;
1172				break;
1173			}
1174
1175			strip_blank_end(p);
1176
1177			if (num_opts == alloc_opts) {
1178				alloc_opts <<= 1;
1179				opts = realloc(opts,
1180						alloc_opts * sizeof(char *));
1181			}
1182
1183			opts[num_opts] = strdup(p);
1184			num_opts++;
1185		}
1186
1187		ret = fio_options_parse(td, opts, num_opts);
1188		if (!ret) {
1189			if (dump_cmdline)
1190				for (i = 0; i < num_opts; i++)
1191					log_info("--%s ", opts[i]);
1192
1193			ret = add_job(td, name, 0);
1194		} else {
1195			log_err("fio: job %s dropped\n", name);
1196			put_job(td);
1197		}
1198
1199		for (i = 0; i < num_opts; i++)
1200			free(opts[i]);
1201		num_opts = 0;
1202	} while (!ret);
1203
1204	if (dump_cmdline)
1205		log_info("\n");
1206
1207	i = 0;
1208	while (i < nr_job_sections) {
1209		free(job_sections[i]);
1210		i++;
1211	}
1212
1213	for (i = 0; i < num_opts; i++)
1214		free(opts[i]);
1215
1216	free(string);
1217	free(name);
1218	free(opts);
1219	if (!is_buf && f != stdin)
1220		fclose(f);
1221	return ret;
1222}
1223
1224static int fill_def_thread(void)
1225{
1226	memset(&def_thread, 0, sizeof(def_thread));
1227
1228	fio_getaffinity(getpid(), &def_thread.o.cpumask);
1229	def_thread.o.timeout = def_timeout;
1230	def_thread.o.error_dump = 1;
1231	/*
1232	 * fill default options
1233	 */
1234	fio_fill_default_options(&def_thread);
1235	return 0;
1236}
1237
1238static void usage(const char *name)
1239{
1240	printf("%s\n", fio_version_string);
1241	printf("%s [options] [job options] <job file(s)>\n", name);
1242	printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1243		"\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1244		"\t\t\tdiskutil,job,mutex,profile,time,net\n");
1245	printf("  --output\t\tWrite output to file\n");
1246	printf("  --runtime\t\tRuntime in seconds\n");
1247	printf("  --latency-log\t\tGenerate per-job latency logs\n");
1248	printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1249	printf("  --minimal\t\tMinimal (terse) output\n");
1250	printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1251	printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1252	printf("  --version\t\tPrint version info and exit\n");
1253	printf("  --help\t\tPrint this page\n");
1254	printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1255	printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1256		" them\n");
1257	printf("  --enghelp=engine\tPrint ioengine help, or list"
1258		" available ioengines\n");
1259	printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1260		" cmd\n");
1261	printf("  --showcmd\t\tTurn a job file into command line options\n");
1262	printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1263	printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1264	printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1265		" writes\n");
1266	printf("  --section=name\tOnly run specified section in job file\n");
1267	printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1268		" (def 1024)\n");
1269	printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1270	printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1271	printf("  --server=args\t\tStart a backend fio server\n");
1272	printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1273	printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1274	printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1275	printf("\n                   Jens Axboe <jaxboe@fusionio.com>\n");
1276}
1277
1278#ifdef FIO_INC_DEBUG
1279struct debug_level debug_levels[] = {
1280	{ .name = "process",	.shift = FD_PROCESS, },
1281	{ .name = "file",	.shift = FD_FILE, },
1282	{ .name = "io",		.shift = FD_IO, },
1283	{ .name = "mem",	.shift = FD_MEM, },
1284	{ .name = "blktrace",	.shift = FD_BLKTRACE },
1285	{ .name = "verify",	.shift = FD_VERIFY },
1286	{ .name = "random",	.shift = FD_RANDOM },
1287	{ .name = "parse",	.shift = FD_PARSE },
1288	{ .name = "diskutil",	.shift = FD_DISKUTIL },
1289	{ .name = "job",	.shift = FD_JOB },
1290	{ .name = "mutex",	.shift = FD_MUTEX },
1291	{ .name	= "profile",	.shift = FD_PROFILE },
1292	{ .name = "time",	.shift = FD_TIME },
1293	{ .name = "net",	.shift = FD_NET },
1294	{ .name = NULL, },
1295};
1296
1297static int set_debug(const char *string)
1298{
1299	struct debug_level *dl;
1300	char *p = (char *) string;
1301	char *opt;
1302	int i;
1303
1304	if (!strcmp(string, "?") || !strcmp(string, "help")) {
1305		log_info("fio: dumping debug options:");
1306		for (i = 0; debug_levels[i].name; i++) {
1307			dl = &debug_levels[i];
1308			log_info("%s,", dl->name);
1309		}
1310		log_info("all\n");
1311		return 1;
1312	}
1313
1314	while ((opt = strsep(&p, ",")) != NULL) {
1315		int found = 0;
1316
1317		if (!strncmp(opt, "all", 3)) {
1318			log_info("fio: set all debug options\n");
1319			fio_debug = ~0UL;
1320			continue;
1321		}
1322
1323		for (i = 0; debug_levels[i].name; i++) {
1324			dl = &debug_levels[i];
1325			found = !strncmp(opt, dl->name, strlen(dl->name));
1326			if (!found)
1327				continue;
1328
1329			if (dl->shift == FD_JOB) {
1330				opt = strchr(opt, ':');
1331				if (!opt) {
1332					log_err("fio: missing job number\n");
1333					break;
1334				}
1335				opt++;
1336				fio_debug_jobno = atoi(opt);
1337				log_info("fio: set debug jobno %d\n",
1338							fio_debug_jobno);
1339			} else {
1340				log_info("fio: set debug option %s\n", opt);
1341				fio_debug |= (1UL << dl->shift);
1342			}
1343			break;
1344		}
1345
1346		if (!found)
1347			log_err("fio: debug mask %s not found\n", opt);
1348	}
1349	return 0;
1350}
1351#else
1352static int set_debug(const char *string)
1353{
1354	log_err("fio: debug tracing not included in build\n");
1355	return 1;
1356}
1357#endif
1358
1359static void fio_options_fill_optstring(void)
1360{
1361	char *ostr = cmd_optstr;
1362	int i, c;
1363
1364	c = i = 0;
1365	while (l_opts[i].name) {
1366		ostr[c++] = l_opts[i].val;
1367		if (l_opts[i].has_arg == required_argument)
1368			ostr[c++] = ':';
1369		else if (l_opts[i].has_arg == optional_argument) {
1370			ostr[c++] = ':';
1371			ostr[c++] = ':';
1372		}
1373		i++;
1374	}
1375	ostr[c] = '\0';
1376}
1377
1378static int client_flag_set(char c)
1379{
1380	int i;
1381
1382	i = 0;
1383	while (l_opts[i].name) {
1384		int val = l_opts[i].val;
1385
1386		if (c == (val & 0xff))
1387			return (val & FIO_CLIENT_FLAG);
1388
1389		i++;
1390	}
1391
1392	return 0;
1393}
1394
1395void parse_cmd_client(void *client, char *opt)
1396{
1397	fio_client_add_cmd_option(client, opt);
1398}
1399
1400int parse_cmd_line(int argc, char *argv[])
1401{
1402	struct thread_data *td = NULL;
1403	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1404	char *ostr = cmd_optstr;
1405	void *pid_file = NULL;
1406	void *cur_client = NULL;
1407	int backend = 0;
1408
1409	/*
1410	 * Reset optind handling, since we may call this multiple times
1411	 * for the backend.
1412	 */
1413	optind = 1;
1414
1415	while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1416		did_arg = 1;
1417
1418		if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1419			parse_cmd_client(cur_client, argv[optind - 1]);
1420			c &= ~FIO_CLIENT_FLAG;
1421		}
1422
1423		switch (c) {
1424		case 'a':
1425			smalloc_pool_size = atoi(optarg);
1426			break;
1427		case 't':
1428			def_timeout = atoi(optarg);
1429			break;
1430		case 'l':
1431			write_lat_log = 1;
1432			break;
1433		case 'b':
1434			write_bw_log = 1;
1435			break;
1436		case 'o':
1437			f_out = fopen(optarg, "w+");
1438			if (!f_out) {
1439				perror("fopen output");
1440				exit(1);
1441			}
1442			f_err = f_out;
1443			break;
1444		case 'm':
1445			output_format = FIO_OUTPUT_TERSE;
1446			break;
1447		case 'F':
1448			if (!strcmp(optarg, "minimal") ||
1449			    !strcmp(optarg, "terse") ||
1450			    !strcmp(optarg, "csv"))
1451				output_format = FIO_OUTPUT_TERSE;
1452			else if (!strcmp(optarg, "json"))
1453				output_format = FIO_OUTPUT_JSON;
1454			else
1455				output_format = FIO_OUTPUT_NORMAL;
1456			break;
1457		case 'h':
1458			if (!cur_client) {
1459				usage(argv[0]);
1460				do_exit++;
1461			}
1462			break;
1463		case 'c':
1464			if (!cur_client) {
1465				fio_show_option_help(optarg);
1466				do_exit++;
1467			}
1468			break;
1469		case 'i':
1470			if (!cur_client) {
1471				fio_show_ioengine_help(optarg);
1472				do_exit++;
1473			}
1474			break;
1475		case 's':
1476			dump_cmdline = 1;
1477			break;
1478		case 'r':
1479			read_only = 1;
1480			break;
1481		case 'v':
1482			if (!cur_client) {
1483				log_info("%s\n", fio_version_string);
1484				do_exit++;
1485			}
1486			break;
1487		case 'V':
1488			terse_version = atoi(optarg);
1489			if (!(terse_version == 2 || terse_version == 3 ||
1490			     terse_version == 4)) {
1491				log_err("fio: bad terse version format\n");
1492				exit_val = 1;
1493				do_exit++;
1494			}
1495			break;
1496		case 'e':
1497			if (!strcmp("always", optarg))
1498				eta_print = FIO_ETA_ALWAYS;
1499			else if (!strcmp("never", optarg))
1500				eta_print = FIO_ETA_NEVER;
1501			break;
1502		case 'd':
1503			if (set_debug(optarg))
1504				do_exit++;
1505			break;
1506		case 'x': {
1507			size_t new_size;
1508
1509			if (!strcmp(optarg, "global")) {
1510				log_err("fio: can't use global as only "
1511					"section\n");
1512				do_exit++;
1513				exit_val = 1;
1514				break;
1515			}
1516			new_size = (nr_job_sections + 1) * sizeof(char *);
1517			job_sections = realloc(job_sections, new_size);
1518			job_sections[nr_job_sections] = strdup(optarg);
1519			nr_job_sections++;
1520			break;
1521			}
1522		case 'p':
1523			exec_profile = strdup(optarg);
1524			break;
1525		case FIO_GETOPT_JOB: {
1526			const char *opt = l_opts[lidx].name;
1527			char *val = optarg;
1528
1529			if (!strncmp(opt, "name", 4) && td) {
1530				ret = add_job(td, td->o.name ?: "fio", 0);
1531				if (ret)
1532					return 0;
1533				td = NULL;
1534			}
1535			if (!td) {
1536				int is_section = !strncmp(opt, "name", 4);
1537				int global = 0;
1538
1539				if (!is_section || !strncmp(val, "global", 6))
1540					global = 1;
1541
1542				if (is_section && skip_this_section(val))
1543					continue;
1544
1545				td = get_new_job(global, &def_thread, 1);
1546				if (!td || ioengine_load(td))
1547					return 0;
1548				fio_options_set_ioengine_opts(l_opts, td);
1549			}
1550
1551			ret = fio_cmd_option_parse(td, opt, val);
1552
1553			if (!ret && !strcmp(opt, "ioengine")) {
1554				free_ioengine(td);
1555				if (ioengine_load(td))
1556					return 0;
1557				fio_options_set_ioengine_opts(l_opts, td);
1558			}
1559			break;
1560		}
1561		case FIO_GETOPT_IOENGINE: {
1562			const char *opt = l_opts[lidx].name;
1563			char *val = optarg;
1564			opt = l_opts[lidx].name;
1565			val = optarg;
1566			ret = fio_cmd_ioengine_option_parse(td, opt, val);
1567			break;
1568		}
1569		case 'w':
1570			warnings_fatal = 1;
1571			break;
1572		case 'j':
1573			max_jobs = atoi(optarg);
1574			if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1575				log_err("fio: invalid max jobs: %d\n", max_jobs);
1576				do_exit++;
1577				exit_val = 1;
1578			}
1579			break;
1580		case 'S':
1581			if (nr_clients) {
1582				log_err("fio: can't be both client and server\n");
1583				do_exit++;
1584				exit_val = 1;
1585				break;
1586			}
1587			if (optarg)
1588				fio_server_set_arg(optarg);
1589			is_backend = 1;
1590			backend = 1;
1591			break;
1592		case 'D':
1593			pid_file = strdup(optarg);
1594			break;
1595		case 'C':
1596			if (is_backend) {
1597				log_err("fio: can't be both client and server\n");
1598				do_exit++;
1599				exit_val = 1;
1600				break;
1601			}
1602			if (fio_client_add(optarg, &cur_client)) {
1603				log_err("fio: failed adding client %s\n", optarg);
1604				do_exit++;
1605				exit_val = 1;
1606				break;
1607			}
1608			/*
1609			 * If the next argument exists and isn't an option,
1610			 * assume it's a job file for this client only.
1611			 */
1612			while (optind < argc) {
1613				if (!strncmp(argv[optind], "--", 2) ||
1614				    !strncmp(argv[optind], "-", 1))
1615					break;
1616
1617				fio_client_add_ini_file(cur_client, argv[optind]);
1618				optind++;
1619			}
1620			break;
1621		case 'T':
1622			do_exit++;
1623			exit_val = fio_monotonic_clocktest();
1624			break;
1625		default:
1626			do_exit++;
1627			exit_val = 1;
1628			break;
1629		}
1630		if (do_exit)
1631			break;
1632	}
1633
1634	if (do_exit) {
1635		if (exit_val && !(is_backend || nr_clients))
1636			exit(exit_val);
1637	}
1638
1639	if (nr_clients && fio_clients_connect()) {
1640		do_exit++;
1641		exit_val = 1;
1642		return -1;
1643	}
1644
1645	if (is_backend && backend)
1646		return fio_start_server(pid_file);
1647
1648	if (td) {
1649		if (!ret)
1650			ret = add_job(td, td->o.name ?: "fio", 0);
1651	}
1652
1653	while (!ret && optind < argc) {
1654		ini_idx++;
1655		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1656		ini_file[ini_idx - 1] = strdup(argv[optind]);
1657		optind++;
1658	}
1659
1660	return ini_idx;
1661}
1662
1663int parse_options(int argc, char *argv[])
1664{
1665	int job_files, i;
1666
1667	f_out = stdout;
1668	f_err = stderr;
1669
1670	fio_options_fill_optstring();
1671	fio_options_dup_and_init(l_opts);
1672
1673	atexit(free_shm);
1674
1675	if (fill_def_thread())
1676		return 1;
1677
1678	job_files = parse_cmd_line(argc, argv);
1679
1680	if (job_files > 0) {
1681		for (i = 0; i < job_files; i++) {
1682			if (fill_def_thread())
1683				return 1;
1684			if (nr_clients) {
1685				if (fio_clients_send_ini(ini_file[i]))
1686					return 1;
1687				free(ini_file[i]);
1688			} else if (!is_backend) {
1689				if (parse_jobs_ini(ini_file[i], 0, i))
1690					return 1;
1691				free(ini_file[i]);
1692			}
1693		}
1694	} else if (nr_clients) {
1695		if (fill_def_thread())
1696			return 1;
1697		if (fio_clients_send_ini(NULL))
1698			return 1;
1699	}
1700
1701	free(ini_file);
1702	fio_options_free(&def_thread);
1703
1704	if (!thread_number) {
1705		if (dump_cmdline)
1706			return 0;
1707		if (exec_profile)
1708			return 0;
1709		if (is_backend || nr_clients)
1710			return 0;
1711		if (did_arg)
1712			return 0;
1713
1714		log_err("No jobs(s) defined\n\n");
1715
1716		if (!did_arg) {
1717			usage(argv[0]);
1718			return 1;
1719		}
1720
1721		return 0;
1722	}
1723
1724	if (def_thread.o.gtod_offload) {
1725		fio_gtod_init();
1726		fio_gtod_offload = 1;
1727		fio_gtod_cpu = def_thread.o.gtod_cpu;
1728	}
1729
1730	if (output_format == FIO_OUTPUT_NORMAL)
1731		log_info("%s\n", fio_version_string);
1732
1733	return 0;
1734}
1735