init.c revision f6a72c738dc58be7718aac2c57fb43f193ae056f 
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 <getopt.h>
12#include <sys/ipc.h>
13#include <sys/shm.h>
14#include <sys/types.h>
15#include <sys/stat.h>
16
17#include "fio.h"
18#include "parse.h"
19#include "smalloc.h"
20#include "filehash.h"
21
22static char fio_version_string[] = "fio 1.20-rc3";
23
24#define FIO_RANDSEED		(0xb1899bedUL)
25
26static char **ini_file;
27static int max_jobs = MAX_JOBS;
28static int dump_cmdline;
29
30struct thread_data def_thread;
31struct thread_data *threads = NULL;
32
33int exitall_on_terminate = 0;
34int terse_output = 0;
35int eta_print;
36unsigned long long mlock_size = 0;
37FILE *f_out = NULL;
38FILE *f_err = NULL;
39char *job_section = NULL;
40
41int write_bw_log = 0;
42int read_only = 0;
43
44static int def_timeout;
45static int write_lat_log;
46
47static int prev_group_jobs;
48
49unsigned long fio_debug = 0;
50
51/*
52 * Command line options. These will contain the above, plus a few
53 * extra that only pertain to fio itself and not jobs.
54 */
55static struct option l_opts[FIO_NR_OPTIONS] = {
56	{
57		.name		= "output",
58		.has_arg	= required_argument,
59		.val		= 'o',
60	},
61	{
62		.name		= "timeout",
63		.has_arg	= required_argument,
64		.val		= 't',
65	},
66	{
67		.name		= "latency-log",
68		.has_arg	= required_argument,
69		.val		= 'l',
70	},
71	{
72		.name		= "bandwidth-log",
73		.has_arg	= required_argument,
74		.val		= 'b',
75	},
76	{
77		.name		= "minimal",
78		.has_arg	= optional_argument,
79		.val		= 'm',
80	},
81	{
82		.name		= "version",
83		.has_arg	= no_argument,
84		.val		= 'v',
85	},
86	{
87		.name		= "help",
88		.has_arg	= no_argument,
89		.val		= 'h',
90	},
91	{
92		.name		= "cmdhelp",
93		.has_arg	= optional_argument,
94		.val		= 'c',
95	},
96	{
97		.name		= "showcmd",
98		.has_arg	= no_argument,
99		.val		= 's',
100	},
101	{
102		.name		= "readonly",
103		.has_arg	= no_argument,
104		.val		= 'r',
105	},
106	{
107		.name		= "eta",
108		.has_arg	= required_argument,
109		.val		= 'e',
110	},
111	{
112		.name		= "debug",
113		.has_arg	= required_argument,
114		.val		= 'd',
115	},
116	{
117		.name		= "section",
118		.has_arg	= required_argument,
119		.val		= 'x',
120	},
121	{
122		.name		= NULL,
123	},
124};
125
126FILE *get_f_out()
127{
128	return f_out;
129}
130
131FILE *get_f_err()
132{
133	return f_err;
134}
135
136/*
137 * Return a free job structure.
138 */
139static struct thread_data *get_new_job(int global, struct thread_data *parent)
140{
141	struct thread_data *td;
142
143	if (global)
144		return &def_thread;
145	if (thread_number >= max_jobs)
146		return NULL;
147
148	td = &threads[thread_number++];
149	*td = *parent;
150
151	dup_files(td, parent);
152	options_mem_dupe(td);
153
154	td->thread_number = thread_number;
155	return td;
156}
157
158static void put_job(struct thread_data *td)
159{
160	if (td == &def_thread)
161		return;
162
163	if (td->error)
164		log_info("fio: %s\n", td->verror);
165
166	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
167	thread_number--;
168}
169
170static int setup_rate(struct thread_data *td)
171{
172	unsigned long nr_reads_per_msec;
173	unsigned long long rate;
174	unsigned int bs;
175
176	if (!td->o.rate && !td->o.rate_iops)
177		return 0;
178
179	if (td_rw(td))
180		bs = td->o.rw_min_bs;
181	else if (td_read(td))
182		bs = td->o.min_bs[DDIR_READ];
183	else
184		bs = td->o.min_bs[DDIR_WRITE];
185
186	if (td->o.rate) {
187		rate = td->o.rate;
188		nr_reads_per_msec = (rate * 1024 * 1000LL) / bs;
189	} else
190		nr_reads_per_msec = td->o.rate_iops * 1000UL;
191
192	if (!nr_reads_per_msec) {
193		log_err("rate lower than supported\n");
194		return -1;
195	}
196
197	td->rate_usec_cycle = 1000000000ULL / nr_reads_per_msec;
198	td->rate_pending_usleep = 0;
199	return 0;
200}
201
202/*
203 * Lazy way of fixing up options that depend on each other. We could also
204 * define option callback handlers, but this is easier.
205 */
206static int fixup_options(struct thread_data *td)
207{
208	struct thread_options *o = &td->o;
209
210	if (read_only && td_write(td)) {
211		log_err("fio: job <%s> has write bit set, but fio is in"
212			" read-only mode\n", td->o.name);
213		return 1;
214	}
215
216	if (o->rwmix[DDIR_READ] + o->rwmix[DDIR_WRITE] > 100)
217		o->rwmix[DDIR_WRITE] = 100 - o->rwmix[DDIR_READ];
218
219	if (o->write_iolog_file && o->read_iolog_file) {
220		log_err("fio: read iolog overrides write_iolog\n");
221		free(o->write_iolog_file);
222		o->write_iolog_file = NULL;
223	}
224
225	/*
226	 * only really works for sequential io for now, and with 1 file
227	 */
228	if (o->zone_size && td_random(td) && o->open_files == 1)
229		o->zone_size = 0;
230
231	/*
232	 * Reads can do overwrites, we always need to pre-create the file
233	 */
234	if (td_read(td) || td_rw(td))
235		o->overwrite = 1;
236
237	if (!o->min_bs[DDIR_READ])
238		o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
239	if (!o->max_bs[DDIR_READ])
240		o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
241	if (!o->min_bs[DDIR_WRITE])
242		o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
243	if (!o->max_bs[DDIR_WRITE])
244		o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
245
246	o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
247
248	if (!o->file_size_high)
249		o->file_size_high = o->file_size_low;
250
251	if (o->norandommap && o->verify != VERIFY_NONE) {
252		log_err("fio: norandommap given, verify disabled\n");
253		o->verify = VERIFY_NONE;
254	}
255	if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
256		log_err("fio: bs_unaligned may not work with raw io\n");
257
258	/*
259	 * thinktime_spin must be less than thinktime
260	 */
261	if (o->thinktime_spin > o->thinktime)
262		o->thinktime_spin = o->thinktime;
263
264	/*
265	 * The low water mark cannot be bigger than the iodepth
266	 */
267	if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
268		/*
269		 * syslet work around - if the workload is sequential,
270		 * we want to let the queue drain all the way down to
271		 * avoid seeking between async threads
272		 */
273		if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
274			o->iodepth_low = 1;
275		else
276			o->iodepth_low = o->iodepth;
277	}
278
279	/*
280	 * If batch number isn't set, default to the same as iodepth
281	 */
282	if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
283		o->iodepth_batch = o->iodepth;
284
285	if (o->nr_files > td->files_index)
286		o->nr_files = td->files_index;
287
288	if (o->open_files > o->nr_files || !o->open_files)
289		o->open_files = o->nr_files;
290
291	if ((o->rate && o->rate_iops) || (o->ratemin && o->rate_iops_min)) {
292		log_err("fio: rate and rate_iops are mutually exclusive\n");
293		return 1;
294	}
295	if ((o->rate < o->ratemin) || (o->rate_iops < o->rate_iops_min)) {
296		log_err("fio: minimum rate exceeds rate\n");
297		return 1;
298	}
299
300	if (!o->timeout && o->time_based) {
301		log_err("fio: time_based requires a runtime/timeout setting\n");
302		o->time_based = 0;
303	}
304
305	if (o->fill_device && !o->size)
306		o->size = ULONG_LONG_MAX;
307
308	if (td_rw(td) && td->o.verify != VERIFY_NONE)
309		log_info("fio: mixed read/write workload with verify. May not "
310		 "work as expected, unless you pre-populated the file\n");
311
312	return 0;
313}
314
315/*
316 * This function leaks the buffer
317 */
318static char *to_kmg(unsigned int val)
319{
320	char *buf = malloc(32);
321	char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
322	char *p = post;
323
324	do {
325		if (val & 1023)
326			break;
327
328		val >>= 10;
329		p++;
330	} while (*p);
331
332	snprintf(buf, 31, "%u%c", val, *p);
333	return buf;
334}
335
336/* External engines are specified by "external:name.o") */
337static const char *get_engine_name(const char *str)
338{
339	char *p = strstr(str, ":");
340
341	if (!p)
342		return str;
343
344	p++;
345	strip_blank_front(&p);
346	strip_blank_end(p);
347	return p;
348}
349
350static int exists_and_not_file(const char *filename)
351{
352	struct stat sb;
353
354	if (lstat(filename, &sb) == -1)
355		return 0;
356
357	if (S_ISREG(sb.st_mode))
358		return 0;
359
360	return 1;
361}
362
363/*
364 * Initialize the various random states we need (random io, block size ranges,
365 * read/write mix, etc).
366 */
367static int init_random_state(struct thread_data *td)
368{
369	unsigned long seeds[6];
370	int fd;
371
372	fd = open("/dev/urandom", O_RDONLY);
373	if (fd == -1) {
374		td_verror(td, errno, "open");
375		return 1;
376	}
377
378	if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
379		td_verror(td, EIO, "read");
380		close(fd);
381		return 1;
382	}
383
384	close(fd);
385
386	os_random_seed(seeds[0], &td->bsrange_state);
387	os_random_seed(seeds[1], &td->verify_state);
388	os_random_seed(seeds[2], &td->rwmix_state);
389
390	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
391		os_random_seed(seeds[3], &td->next_file_state);
392
393	os_random_seed(seeds[5], &td->file_size_state);
394
395	if (!td_random(td))
396		return 0;
397
398	if (td->o.rand_repeatable)
399		seeds[4] = FIO_RANDSEED * td->thread_number;
400
401	os_random_seed(seeds[4], &td->random_state);
402	return 0;
403}
404
405/*
406 * Adds a job to the list of things todo. Sanitizes the various options
407 * to make sure we don't have conflicts, and initializes various
408 * members of td.
409 */
410static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
411{
412	const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
413				   "randread", "randwrite", "randrw" };
414	unsigned int i;
415	const char *engine;
416	char fname[PATH_MAX];
417	int numjobs, file_alloced;
418
419	/*
420	 * the def_thread is just for options, it's not a real job
421	 */
422	if (td == &def_thread)
423		return 0;
424
425	/*
426	 * if we are just dumping the output command line, don't add the job
427	 */
428	if (dump_cmdline) {
429		put_job(td);
430		return 0;
431	}
432
433	engine = get_engine_name(td->o.ioengine);
434	td->io_ops = load_ioengine(td, engine);
435	if (!td->io_ops) {
436		log_err("fio: failed to load engine %s\n", engine);
437		goto err;
438	}
439
440	if (td->o.use_thread)
441		nr_thread++;
442	else
443		nr_process++;
444
445	if (td->o.odirect)
446		td->io_ops->flags |= FIO_RAWIO;
447
448	file_alloced = 0;
449	if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
450		file_alloced = 1;
451
452		if (td->o.nr_files == 1 && exists_and_not_file(jobname))
453			add_file(td, jobname);
454		else {
455			for (i = 0; i < td->o.nr_files; i++) {
456				sprintf(fname, "%s.%d.%d", jobname,
457							td->thread_number, i);
458				add_file(td, fname);
459			}
460		}
461	}
462
463	if (fixup_options(td))
464		goto err;
465
466	if (td->io_ops->flags & FIO_DISKLESSIO) {
467		struct fio_file *f;
468
469		for_each_file(td, f, i)
470			f->real_file_size = -1ULL;
471	}
472
473	td->mutex = fio_mutex_init(0);
474
475	td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
476	td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
477	td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
478	td->ddir_nr = td->o.ddir_nr;
479
480	if ((td->o.stonewall || td->o.numjobs > 1 || td->o.new_group)
481	     && prev_group_jobs) {
482		prev_group_jobs = 0;
483		groupid++;
484	}
485
486	td->groupid = groupid;
487	prev_group_jobs++;
488
489	if (init_random_state(td))
490		goto err;
491
492	if (setup_rate(td))
493		goto err;
494
495	if (td->o.write_lat_log) {
496		setup_log(&td->ts.slat_log);
497		setup_log(&td->ts.clat_log);
498	}
499	if (td->o.write_bw_log)
500		setup_log(&td->ts.bw_log);
501
502	if (!td->o.name)
503		td->o.name = strdup(jobname);
504
505	if (!terse_output) {
506		if (!job_add_num) {
507			if (!strcmp(td->io_ops->name, "cpuio")) {
508				log_info("%s: ioengine=cpu, cpuload=%u,"
509					 " cpucycle=%u\n", td->o.name,
510							td->o.cpuload,
511							td->o.cpucycle);
512			} else {
513				char *c1, *c2, *c3, *c4;
514
515				c1 = to_kmg(td->o.min_bs[DDIR_READ]);
516				c2 = to_kmg(td->o.max_bs[DDIR_READ]);
517				c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
518				c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
519
520				log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
521					 " ioengine=%s, iodepth=%u\n",
522						td->o.name, td->groupid,
523						ddir_str[td->o.td_ddir],
524						c1, c2, c3, c4,
525						td->io_ops->name,
526						td->o.iodepth);
527
528				free(c1);
529				free(c2);
530				free(c3);
531				free(c4);
532			}
533		} else if (job_add_num == 1)
534			log_info("...\n");
535	}
536
537	/*
538	 * recurse add identical jobs, clear numjobs and stonewall options
539	 * as they don't apply to sub-jobs
540	 */
541	numjobs = td->o.numjobs;
542	while (--numjobs) {
543		struct thread_data *td_new = get_new_job(0, td);
544
545		if (!td_new)
546			goto err;
547
548		td_new->o.numjobs = 1;
549		td_new->o.stonewall = 0;
550		td_new->o.new_group = 0;
551
552		if (file_alloced) {
553			td_new->o.filename = NULL;
554			td_new->files_index = 0;
555			td_new->files = NULL;
556		}
557
558		job_add_num = numjobs - 1;
559
560		if (add_job(td_new, jobname, job_add_num))
561			goto err;
562	}
563
564	return 0;
565err:
566	put_job(td);
567	return -1;
568}
569
570static int skip_this_section(const char *name)
571{
572	if (!job_section)
573		return 0;
574	if (!strncmp(name, "global", 6))
575		return 0;
576
577	return strncmp(job_section, name, strlen(job_section));
578}
579
580static int is_empty_or_comment(char *line)
581{
582	unsigned int i;
583
584	for (i = 0; i < strlen(line); i++) {
585		if (line[i] == ';')
586			return 1;
587		if (line[i] == '#')
588			return 1;
589		if (!isspace(line[i]) && !iscntrl(line[i]))
590			return 0;
591	}
592
593	return 1;
594}
595
596/*
597 * This is our [ini] type file parser.
598 */
599static int parse_jobs_ini(char *file, int stonewall_flag)
600{
601	unsigned int global;
602	struct thread_data *td;
603	char *string, *name;
604	FILE *f;
605	char *p;
606	int ret = 0, stonewall;
607	int first_sect = 1;
608	int skip_fgets = 0;
609	int inside_skip = 0;
610
611	if (!strcmp(file, "-"))
612		f = stdin;
613	else
614		f = fopen(file, "r");
615
616	if (!f) {
617		perror("fopen job file");
618		return 1;
619	}
620
621	string = malloc(4096);
622
623	/*
624	 * it's really 256 + small bit, 280 should suffice
625	 */
626	name = malloc(280);
627	memset(name, 0, 280);
628
629	stonewall = stonewall_flag;
630	do {
631		/*
632		 * if skip_fgets is set, we already have loaded a line we
633		 * haven't handled.
634		 */
635		if (!skip_fgets) {
636			p = fgets(string, 4095, f);
637			if (!p)
638				break;
639		}
640
641		skip_fgets = 0;
642		strip_blank_front(&p);
643		strip_blank_end(p);
644
645		if (is_empty_or_comment(p))
646			continue;
647		if (sscanf(p, "[%255s]", name) != 1) {
648			if (inside_skip)
649				continue;
650			log_err("fio: option <%s> outside of [] job section\n",
651									p);
652			break;
653		}
654
655		if (skip_this_section(name)) {
656			inside_skip = 1;
657			continue;
658		} else
659			inside_skip = 0;
660
661		global = !strncmp(name, "global", 6);
662
663		name[strlen(name) - 1] = '\0';
664
665		if (dump_cmdline) {
666			if (first_sect)
667				log_info("fio ");
668			if (!global)
669				log_info("--name=%s ", name);
670			first_sect = 0;
671		}
672
673		td = get_new_job(global, &def_thread);
674		if (!td) {
675			ret = 1;
676			break;
677		}
678
679		/*
680		 * Seperate multiple job files by a stonewall
681		 */
682		if (!global && stonewall) {
683			td->o.stonewall = stonewall;
684			stonewall = 0;
685		}
686
687		while ((p = fgets(string, 4096, f)) != NULL) {
688			if (is_empty_or_comment(p))
689				continue;
690
691			strip_blank_front(&p);
692
693			/*
694			 * new section, break out and make sure we don't
695			 * fgets() a new line at the top.
696			 */
697			if (p[0] == '[') {
698				skip_fgets = 1;
699				break;
700			}
701
702			strip_blank_end(p);
703
704			/*
705			 * Don't break here, continue parsing options so we
706			 * dump all the bad ones. Makes trial/error fixups
707			 * easier on the user.
708			 */
709			ret |= fio_option_parse(td, p);
710			if (!ret && dump_cmdline)
711				log_info("--%s ", p);
712		}
713
714		if (!ret)
715			ret = add_job(td, name, 0);
716		else {
717			log_err("fio: job %s dropped\n", name);
718			put_job(td);
719		}
720	} while (!ret);
721
722	if (dump_cmdline)
723		log_info("\n");
724
725	free(string);
726	free(name);
727	if (f != stdin)
728		fclose(f);
729	return ret;
730}
731
732static int fill_def_thread(void)
733{
734	memset(&def_thread, 0, sizeof(def_thread));
735
736	fio_getaffinity(getpid(), &def_thread.o.cpumask);
737
738	/*
739	 * fill default options
740	 */
741	fio_fill_default_options(&def_thread);
742
743	def_thread.o.timeout = def_timeout;
744	def_thread.o.write_bw_log = write_bw_log;
745	def_thread.o.write_lat_log = write_lat_log;
746
747	return 0;
748}
749
750static void free_shm(void)
751{
752	struct shmid_ds sbuf;
753
754	if (threads) {
755		shmdt((void *) threads);
756		threads = NULL;
757		shmctl(shm_id, IPC_RMID, &sbuf);
758	}
759
760	scleanup();
761}
762
763/*
764 * The thread area is shared between the main process and the job
765 * threads/processes. So setup a shared memory segment that will hold
766 * all the job info. We use the end of the region for keeping track of
767 * open files across jobs, for file sharing.
768 */
769static int setup_thread_area(void)
770{
771	void *hash;
772
773	/*
774	 * 1024 is too much on some machines, scale max_jobs if
775	 * we get a failure that looks like too large a shm segment
776	 */
777	do {
778		size_t size = max_jobs * sizeof(struct thread_data);
779
780		size += file_hash_size;
781
782		shm_id = shmget(0, size, IPC_CREAT | 0600);
783		if (shm_id != -1)
784			break;
785		if (errno != EINVAL) {
786			perror("shmget");
787			break;
788		}
789
790		max_jobs >>= 1;
791	} while (max_jobs);
792
793	if (shm_id == -1)
794		return 1;
795
796	threads = shmat(shm_id, NULL, 0);
797	if (threads == (void *) -1) {
798		perror("shmat");
799		return 1;
800	}
801
802	memset(threads, 0, max_jobs * sizeof(struct thread_data));
803	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
804	file_hash_init(hash);
805	atexit(free_shm);
806	return 0;
807}
808
809static void usage(const char *name)
810{
811	printf("%s\n", fio_version_string);
812	printf("%s [options] [job options] <job file(s)>\n", name);
813	printf("\t--debug=options\tEnable debug logging\n");
814	printf("\t--output\tWrite output to file\n");
815	printf("\t--timeout\tRuntime in seconds\n");
816	printf("\t--latency-log\tGenerate per-job latency logs\n");
817	printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
818	printf("\t--minimal\tMinimal (terse) output\n");
819	printf("\t--version\tPrint version info and exit\n");
820	printf("\t--help\t\tPrint this page\n");
821	printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of"
822		" them\n");
823	printf("\t--showcmd\tTurn a job file into command line options\n");
824	printf("\t--eta=when\tWhen ETA estimate should be printed\n");
825	printf("\t          \tMay be \"always\", \"never\" or \"auto\"\n");
826	printf("\t--readonly\tTurn on safety read-only checks, preventing"
827		" writes\n");
828	printf("\t--section=name\tOnly run specified section in job file\n");
829}
830
831#ifdef FIO_INC_DEBUG
832struct debug_level debug_levels[] = {
833	{ .name = "process",	.shift = FD_PROCESS, },
834	{ .name = "file",	.shift = FD_FILE, },
835	{ .name = "io",		.shift = FD_IO, },
836	{ .name = "mem",	.shift = FD_MEM, },
837	{ .name = "blktrace",	.shift = FD_BLKTRACE },
838	{ .name = "verify",	.shift = FD_VERIFY },
839	{ .name = "random",	.shift = FD_RANDOM },
840	{ .name = "parse",	.shift = FD_PARSE },
841	{ .name = "diskutil",	.shift = FD_DISKUTIL },
842	{ },
843};
844
845static int set_debug(const char *string)
846{
847	struct debug_level *dl;
848	char *p = (char *) string;
849	char *opt;
850	int i;
851
852	if (!strcmp(string, "?") || !strcmp(string, "help")) {
853		int i;
854
855		log_info("fio: dumping debug options:");
856		for (i = 0; debug_levels[i].name; i++) {
857			dl = &debug_levels[i];
858			log_info("%s,", dl->name);
859		}
860		log_info("all\n");
861		return 1;
862	} else if (!strcmp(string, "all")) {
863		fio_debug = ~0UL;
864		return 0;
865	}
866
867	while ((opt = strsep(&p, ",")) != NULL) {
868		int found = 0;
869
870		for (i = 0; debug_levels[i].name; i++) {
871			dl = &debug_levels[i];
872			if (!strncmp(opt, dl->name, strlen(opt))) {
873				log_info("fio: set debug option %s\n", opt);
874				found = 1;
875				fio_debug |= (1UL << dl->shift);
876				break;
877			}
878		}
879
880		if (!found)
881			log_err("fio: debug mask %s not found\n", opt);
882	}
883	return 0;
884}
885#else
886static void set_debug(const char *string)
887{
888	log_err("fio: debug tracing not included in build\n");
889	return 1;
890}
891#endif
892
893static int parse_cmd_line(int argc, char *argv[])
894{
895	struct thread_data *td = NULL;
896	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
897
898	while ((c = getopt_long_only(argc, argv, "", l_opts, &lidx)) != -1) {
899		switch (c) {
900		case 't':
901			def_timeout = atoi(optarg);
902			break;
903		case 'l':
904			write_lat_log = 1;
905			break;
906		case 'w':
907			write_bw_log = 1;
908			break;
909		case 'o':
910			f_out = fopen(optarg, "w+");
911			if (!f_out) {
912				perror("fopen output");
913				exit(1);
914			}
915			f_err = f_out;
916			break;
917		case 'm':
918			terse_output = 1;
919			break;
920		case 'h':
921			usage(argv[0]);
922			exit(0);
923		case 'c':
924			exit(fio_show_option_help(optarg));
925		case 's':
926			dump_cmdline = 1;
927			break;
928		case 'r':
929			read_only = 1;
930			break;
931		case 'v':
932			printf("%s\n", fio_version_string);
933			exit(0);
934		case 'e':
935			if (!strcmp("always", optarg))
936				eta_print = FIO_ETA_ALWAYS;
937			else if (!strcmp("never", optarg))
938				eta_print = FIO_ETA_NEVER;
939			break;
940		case 'd':
941			if (set_debug(optarg))
942				do_exit++;
943			break;
944		case 'x':
945			if (!strcmp(optarg, "global")) {
946				log_err("fio: can't use global as only "
947					"section\n");
948				do_exit++;
949				exit_val = 1;
950				break;
951			}
952			if (job_section)
953				free(job_section);
954			job_section = strdup(optarg);
955			break;
956		case FIO_GETOPT_JOB: {
957			const char *opt = l_opts[lidx].name;
958			char *val = optarg;
959
960			if (!strncmp(opt, "name", 4) && td) {
961				ret = add_job(td, td->o.name ?: "fio", 0);
962				if (ret) {
963					put_job(td);
964					return 0;
965				}
966				td = NULL;
967			}
968			if (!td) {
969				int is_section = !strncmp(opt, "name", 4);
970				int global = 0;
971
972				if (!is_section || !strncmp(val, "global", 6))
973					global = 1;
974
975				if (is_section && skip_this_section(val))
976					continue;
977
978				td = get_new_job(global, &def_thread);
979				if (!td)
980					return 0;
981			}
982
983			ret = fio_cmd_option_parse(td, opt, val);
984			break;
985		}
986		default:
987			do_exit++;
988			exit_val = 1;
989			break;
990		}
991	}
992
993	if (do_exit)
994		exit(exit_val);
995
996	if (td) {
997		if (!ret)
998			ret = add_job(td, td->o.name ?: "fio", 0);
999		if (ret)
1000			put_job(td);
1001	}
1002
1003	while (optind < argc) {
1004		ini_idx++;
1005		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1006		ini_file[ini_idx - 1] = strdup(argv[optind]);
1007		optind++;
1008	}
1009
1010	return ini_idx;
1011}
1012
1013int parse_options(int argc, char *argv[])
1014{
1015	int job_files, i;
1016
1017	f_out = stdout;
1018	f_err = stderr;
1019
1020	fio_options_dup_and_init(l_opts);
1021
1022	if (setup_thread_area())
1023		return 1;
1024	if (fill_def_thread())
1025		return 1;
1026
1027	job_files = parse_cmd_line(argc, argv);
1028
1029	for (i = 0; i < job_files; i++) {
1030		if (fill_def_thread())
1031			return 1;
1032		if (parse_jobs_ini(ini_file[i], i))
1033			return 1;
1034		free(ini_file[i]);
1035	}
1036
1037	free(ini_file);
1038	options_mem_free(&def_thread);
1039
1040	if (!thread_number) {
1041		if (dump_cmdline)
1042			return 0;
1043
1044		log_err("No jobs defined(s)\n");
1045		usage(argv[0]);
1046		return 1;
1047	}
1048
1049	return 0;
1050}
1051