init.c revision 98eeabf3e54aea64363a231123aacd5b0730e051 
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";
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		= "alloc-size",
123		.has_arg	= required_argument,
124		.val		= 'a',
125	},
126	{
127		.name		= NULL,
128	},
129};
130
131FILE *get_f_out()
132{
133	return f_out;
134}
135
136FILE *get_f_err()
137{
138	return f_err;
139}
140
141/*
142 * Return a free job structure.
143 */
144static struct thread_data *get_new_job(int global, struct thread_data *parent)
145{
146	struct thread_data *td;
147
148	if (global)
149		return &def_thread;
150	if (thread_number >= max_jobs)
151		return NULL;
152
153	td = &threads[thread_number++];
154	*td = *parent;
155
156	dup_files(td, parent);
157	options_mem_dupe(td);
158
159	td->thread_number = thread_number;
160	return td;
161}
162
163static void put_job(struct thread_data *td)
164{
165	if (td == &def_thread)
166		return;
167
168	if (td->error)
169		log_info("fio: %s\n", td->verror);
170
171	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
172	thread_number--;
173}
174
175static int setup_rate(struct thread_data *td)
176{
177	unsigned long nr_reads_per_msec;
178	unsigned long long rate;
179	unsigned int bs;
180
181	if (!td->o.rate && !td->o.rate_iops)
182		return 0;
183
184	if (td_rw(td))
185		bs = td->o.rw_min_bs;
186	else if (td_read(td))
187		bs = td->o.min_bs[DDIR_READ];
188	else
189		bs = td->o.min_bs[DDIR_WRITE];
190
191	if (td->o.rate) {
192		rate = td->o.rate;
193		nr_reads_per_msec = (rate * 1024 * 1000LL) / bs;
194	} else
195		nr_reads_per_msec = td->o.rate_iops * 1000UL;
196
197	if (!nr_reads_per_msec) {
198		log_err("rate lower than supported\n");
199		return -1;
200	}
201
202	td->rate_usec_cycle = 1000000000ULL / nr_reads_per_msec;
203	td->rate_pending_usleep = 0;
204	return 0;
205}
206
207/*
208 * Lazy way of fixing up options that depend on each other. We could also
209 * define option callback handlers, but this is easier.
210 */
211static int fixup_options(struct thread_data *td)
212{
213	struct thread_options *o = &td->o;
214
215	if (read_only && td_write(td)) {
216		log_err("fio: job <%s> has write bit set, but fio is in"
217			" read-only mode\n", td->o.name);
218		return 1;
219	}
220
221	if (o->rwmix[DDIR_READ] + o->rwmix[DDIR_WRITE] > 100)
222		o->rwmix[DDIR_WRITE] = 100 - o->rwmix[DDIR_READ];
223
224	if (o->write_iolog_file && o->read_iolog_file) {
225		log_err("fio: read iolog overrides write_iolog\n");
226		free(o->write_iolog_file);
227		o->write_iolog_file = NULL;
228	}
229
230	/*
231	 * only really works for sequential io for now, and with 1 file
232	 */
233	if (o->zone_size && td_random(td) && o->open_files == 1)
234		o->zone_size = 0;
235
236	/*
237	 * Reads can do overwrites, we always need to pre-create the file
238	 */
239	if (td_read(td) || td_rw(td))
240		o->overwrite = 1;
241
242	if (!o->min_bs[DDIR_READ])
243		o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
244	if (!o->max_bs[DDIR_READ])
245		o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
246	if (!o->min_bs[DDIR_WRITE])
247		o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
248	if (!o->max_bs[DDIR_WRITE])
249		o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
250
251	o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
252
253	if (!o->file_size_high)
254		o->file_size_high = o->file_size_low;
255
256	if (o->norandommap && o->verify != VERIFY_NONE) {
257		log_err("fio: norandommap given, verify disabled\n");
258		o->verify = VERIFY_NONE;
259	}
260	if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
261		log_err("fio: bs_unaligned may not work with raw io\n");
262
263	/*
264	 * thinktime_spin must be less than thinktime
265	 */
266	if (o->thinktime_spin > o->thinktime)
267		o->thinktime_spin = o->thinktime;
268
269	/*
270	 * The low water mark cannot be bigger than the iodepth
271	 */
272	if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
273		/*
274		 * syslet work around - if the workload is sequential,
275		 * we want to let the queue drain all the way down to
276		 * avoid seeking between async threads
277		 */
278		if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
279			o->iodepth_low = 1;
280		else
281			o->iodepth_low = o->iodepth;
282	}
283
284	/*
285	 * If batch number isn't set, default to the same as iodepth
286	 */
287	if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
288		o->iodepth_batch = o->iodepth;
289
290	if (o->nr_files > td->files_index)
291		o->nr_files = td->files_index;
292
293	if (o->open_files > o->nr_files || !o->open_files)
294		o->open_files = o->nr_files;
295
296	if ((o->rate && o->rate_iops) || (o->ratemin && o->rate_iops_min)) {
297		log_err("fio: rate and rate_iops are mutually exclusive\n");
298		return 1;
299	}
300	if ((o->rate < o->ratemin) || (o->rate_iops < o->rate_iops_min)) {
301		log_err("fio: minimum rate exceeds rate\n");
302		return 1;
303	}
304
305	if (!o->timeout && o->time_based) {
306		log_err("fio: time_based requires a runtime/timeout setting\n");
307		o->time_based = 0;
308	}
309
310	if (o->fill_device && !o->size)
311		o->size = ULONG_LONG_MAX;
312
313	if (td_rw(td) && td->o.verify != VERIFY_NONE)
314		log_info("fio: mixed read/write workload with verify. May not "
315		 "work as expected, unless you pre-populated the file\n");
316
317	return 0;
318}
319
320/*
321 * This function leaks the buffer
322 */
323static char *to_kmg(unsigned int val)
324{
325	char *buf = malloc(32);
326	char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
327	char *p = post;
328
329	do {
330		if (val & 1023)
331			break;
332
333		val >>= 10;
334		p++;
335	} while (*p);
336
337	snprintf(buf, 31, "%u%c", val, *p);
338	return buf;
339}
340
341/* External engines are specified by "external:name.o") */
342static const char *get_engine_name(const char *str)
343{
344	char *p = strstr(str, ":");
345
346	if (!p)
347		return str;
348
349	p++;
350	strip_blank_front(&p);
351	strip_blank_end(p);
352	return p;
353}
354
355static int exists_and_not_file(const char *filename)
356{
357	struct stat sb;
358
359	if (lstat(filename, &sb) == -1)
360		return 0;
361
362	if (S_ISREG(sb.st_mode))
363		return 0;
364
365	return 1;
366}
367
368/*
369 * Initialize the various random states we need (random io, block size ranges,
370 * read/write mix, etc).
371 */
372static int init_random_state(struct thread_data *td)
373{
374	unsigned long seeds[6];
375	int fd;
376
377	fd = open("/dev/urandom", O_RDONLY);
378	if (fd == -1) {
379		td_verror(td, errno, "open");
380		return 1;
381	}
382
383	if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
384		td_verror(td, EIO, "read");
385		close(fd);
386		return 1;
387	}
388
389	close(fd);
390
391	os_random_seed(seeds[0], &td->bsrange_state);
392	os_random_seed(seeds[1], &td->verify_state);
393	os_random_seed(seeds[2], &td->rwmix_state);
394
395	if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
396		os_random_seed(seeds[3], &td->next_file_state);
397
398	os_random_seed(seeds[5], &td->file_size_state);
399
400	if (!td_random(td))
401		return 0;
402
403	if (td->o.rand_repeatable)
404		seeds[4] = FIO_RANDSEED * td->thread_number;
405
406	os_random_seed(seeds[4], &td->random_state);
407	return 0;
408}
409
410/*
411 * Adds a job to the list of things todo. Sanitizes the various options
412 * to make sure we don't have conflicts, and initializes various
413 * members of td.
414 */
415static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
416{
417	const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
418				   "randread", "randwrite", "randrw" };
419	unsigned int i;
420	const char *engine;
421	char fname[PATH_MAX];
422	int numjobs, file_alloced;
423
424	/*
425	 * the def_thread is just for options, it's not a real job
426	 */
427	if (td == &def_thread)
428		return 0;
429
430	/*
431	 * if we are just dumping the output command line, don't add the job
432	 */
433	if (dump_cmdline) {
434		put_job(td);
435		return 0;
436	}
437
438	engine = get_engine_name(td->o.ioengine);
439	td->io_ops = load_ioengine(td, engine);
440	if (!td->io_ops) {
441		log_err("fio: failed to load engine %s\n", engine);
442		goto err;
443	}
444
445	if (td->o.use_thread)
446		nr_thread++;
447	else
448		nr_process++;
449
450	if (td->o.odirect)
451		td->io_ops->flags |= FIO_RAWIO;
452
453	file_alloced = 0;
454	if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
455		file_alloced = 1;
456
457		if (td->o.nr_files == 1 && exists_and_not_file(jobname))
458			add_file(td, jobname);
459		else {
460			for (i = 0; i < td->o.nr_files; i++) {
461				sprintf(fname, "%s.%d.%d", jobname,
462							td->thread_number, i);
463				add_file(td, fname);
464			}
465		}
466	}
467
468	if (fixup_options(td))
469		goto err;
470
471	if (td->io_ops->flags & FIO_DISKLESSIO) {
472		struct fio_file *f;
473
474		for_each_file(td, f, i)
475			f->real_file_size = -1ULL;
476	}
477
478	td->mutex = fio_mutex_init(0);
479
480	td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
481	td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
482	td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
483	td->ddir_nr = td->o.ddir_nr;
484
485	if ((td->o.stonewall || td->o.numjobs > 1 || td->o.new_group)
486	     && prev_group_jobs) {
487		prev_group_jobs = 0;
488		groupid++;
489	}
490
491	td->groupid = groupid;
492	prev_group_jobs++;
493
494	if (init_random_state(td))
495		goto err;
496
497	if (setup_rate(td))
498		goto err;
499
500	if (td->o.write_lat_log) {
501		setup_log(&td->ts.slat_log);
502		setup_log(&td->ts.clat_log);
503	}
504	if (td->o.write_bw_log)
505		setup_log(&td->ts.bw_log);
506
507	if (!td->o.name)
508		td->o.name = strdup(jobname);
509
510	if (!terse_output) {
511		if (!job_add_num) {
512			if (!strcmp(td->io_ops->name, "cpuio")) {
513				log_info("%s: ioengine=cpu, cpuload=%u,"
514					 " cpucycle=%u\n", td->o.name,
515							td->o.cpuload,
516							td->o.cpucycle);
517			} else {
518				char *c1, *c2, *c3, *c4;
519
520				c1 = to_kmg(td->o.min_bs[DDIR_READ]);
521				c2 = to_kmg(td->o.max_bs[DDIR_READ]);
522				c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
523				c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
524
525				log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
526					 " ioengine=%s, iodepth=%u\n",
527						td->o.name, td->groupid,
528						ddir_str[td->o.td_ddir],
529						c1, c2, c3, c4,
530						td->io_ops->name,
531						td->o.iodepth);
532
533				free(c1);
534				free(c2);
535				free(c3);
536				free(c4);
537			}
538		} else if (job_add_num == 1)
539			log_info("...\n");
540	}
541
542	/*
543	 * recurse add identical jobs, clear numjobs and stonewall options
544	 * as they don't apply to sub-jobs
545	 */
546	numjobs = td->o.numjobs;
547	while (--numjobs) {
548		struct thread_data *td_new = get_new_job(0, td);
549
550		if (!td_new)
551			goto err;
552
553		td_new->o.numjobs = 1;
554		td_new->o.stonewall = 0;
555		td_new->o.new_group = 0;
556
557		if (file_alloced) {
558			td_new->o.filename = NULL;
559			td_new->files_index = 0;
560			td_new->files = NULL;
561		}
562
563		job_add_num = numjobs - 1;
564
565		if (add_job(td_new, jobname, job_add_num))
566			goto err;
567	}
568
569	return 0;
570err:
571	put_job(td);
572	return -1;
573}
574
575static int skip_this_section(const char *name)
576{
577	if (!job_section)
578		return 0;
579	if (!strncmp(name, "global", 6))
580		return 0;
581
582	return strncmp(job_section, name, strlen(job_section));
583}
584
585static int is_empty_or_comment(char *line)
586{
587	unsigned int i;
588
589	for (i = 0; i < strlen(line); i++) {
590		if (line[i] == ';')
591			return 1;
592		if (line[i] == '#')
593			return 1;
594		if (!isspace(line[i]) && !iscntrl(line[i]))
595			return 0;
596	}
597
598	return 1;
599}
600
601/*
602 * This is our [ini] type file parser.
603 */
604static int parse_jobs_ini(char *file, int stonewall_flag)
605{
606	unsigned int global;
607	struct thread_data *td;
608	char *string, *name;
609	FILE *f;
610	char *p;
611	int ret = 0, stonewall;
612	int first_sect = 1;
613	int skip_fgets = 0;
614	int inside_skip = 0;
615
616	if (!strcmp(file, "-"))
617		f = stdin;
618	else
619		f = fopen(file, "r");
620
621	if (!f) {
622		perror("fopen job file");
623		return 1;
624	}
625
626	string = malloc(4096);
627
628	/*
629	 * it's really 256 + small bit, 280 should suffice
630	 */
631	name = malloc(280);
632	memset(name, 0, 280);
633
634	stonewall = stonewall_flag;
635	do {
636		/*
637		 * if skip_fgets is set, we already have loaded a line we
638		 * haven't handled.
639		 */
640		if (!skip_fgets) {
641			p = fgets(string, 4095, f);
642			if (!p)
643				break;
644		}
645
646		skip_fgets = 0;
647		strip_blank_front(&p);
648		strip_blank_end(p);
649
650		if (is_empty_or_comment(p))
651			continue;
652		if (sscanf(p, "[%255s]", name) != 1) {
653			if (inside_skip)
654				continue;
655			log_err("fio: option <%s> outside of [] job section\n",
656									p);
657			break;
658		}
659
660		if (skip_this_section(name)) {
661			inside_skip = 1;
662			continue;
663		} else
664			inside_skip = 0;
665
666		global = !strncmp(name, "global", 6);
667
668		name[strlen(name) - 1] = '\0';
669
670		if (dump_cmdline) {
671			if (first_sect)
672				log_info("fio ");
673			if (!global)
674				log_info("--name=%s ", name);
675			first_sect = 0;
676		}
677
678		td = get_new_job(global, &def_thread);
679		if (!td) {
680			ret = 1;
681			break;
682		}
683
684		/*
685		 * Seperate multiple job files by a stonewall
686		 */
687		if (!global && stonewall) {
688			td->o.stonewall = stonewall;
689			stonewall = 0;
690		}
691
692		while ((p = fgets(string, 4096, f)) != NULL) {
693			if (is_empty_or_comment(p))
694				continue;
695
696			strip_blank_front(&p);
697
698			/*
699			 * new section, break out and make sure we don't
700			 * fgets() a new line at the top.
701			 */
702			if (p[0] == '[') {
703				skip_fgets = 1;
704				break;
705			}
706
707			strip_blank_end(p);
708
709			/*
710			 * Don't break here, continue parsing options so we
711			 * dump all the bad ones. Makes trial/error fixups
712			 * easier on the user.
713			 */
714			ret |= fio_option_parse(td, p);
715			if (!ret && dump_cmdline)
716				log_info("--%s ", p);
717		}
718
719		if (!ret)
720			ret = add_job(td, name, 0);
721		else {
722			log_err("fio: job %s dropped\n", name);
723			put_job(td);
724		}
725	} while (!ret);
726
727	if (dump_cmdline)
728		log_info("\n");
729
730	free(string);
731	free(name);
732	if (f != stdin)
733		fclose(f);
734	return ret;
735}
736
737static int fill_def_thread(void)
738{
739	memset(&def_thread, 0, sizeof(def_thread));
740
741	fio_getaffinity(getpid(), &def_thread.o.cpumask);
742
743	/*
744	 * fill default options
745	 */
746	fio_fill_default_options(&def_thread);
747
748	def_thread.o.timeout = def_timeout;
749	def_thread.o.write_bw_log = write_bw_log;
750	def_thread.o.write_lat_log = write_lat_log;
751
752	return 0;
753}
754
755static void free_shm(void)
756{
757	struct shmid_ds sbuf;
758
759	if (threads) {
760		shmdt((void *) threads);
761		threads = NULL;
762		shmctl(shm_id, IPC_RMID, &sbuf);
763	}
764
765	scleanup();
766}
767
768/*
769 * The thread area is shared between the main process and the job
770 * threads/processes. So setup a shared memory segment that will hold
771 * all the job info. We use the end of the region for keeping track of
772 * open files across jobs, for file sharing.
773 */
774static int setup_thread_area(void)
775{
776	void *hash;
777
778	/*
779	 * 1024 is too much on some machines, scale max_jobs if
780	 * we get a failure that looks like too large a shm segment
781	 */
782	do {
783		size_t size = max_jobs * sizeof(struct thread_data);
784
785		size += file_hash_size;
786
787		shm_id = shmget(0, size, IPC_CREAT | 0600);
788		if (shm_id != -1)
789			break;
790		if (errno != EINVAL) {
791			perror("shmget");
792			break;
793		}
794
795		max_jobs >>= 1;
796	} while (max_jobs);
797
798	if (shm_id == -1)
799		return 1;
800
801	threads = shmat(shm_id, NULL, 0);
802	if (threads == (void *) -1) {
803		perror("shmat");
804		return 1;
805	}
806
807	memset(threads, 0, max_jobs * sizeof(struct thread_data));
808	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
809	file_hash_init(hash);
810	atexit(free_shm);
811	return 0;
812}
813
814static void usage(const char *name)
815{
816	printf("%s\n", fio_version_string);
817	printf("%s [options] [job options] <job file(s)>\n", name);
818	printf("\t--debug=options\tEnable debug logging\n");
819	printf("\t--output\tWrite output to file\n");
820	printf("\t--timeout\tRuntime in seconds\n");
821	printf("\t--latency-log\tGenerate per-job latency logs\n");
822	printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
823	printf("\t--minimal\tMinimal (terse) output\n");
824	printf("\t--version\tPrint version info and exit\n");
825	printf("\t--help\t\tPrint this page\n");
826	printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of"
827		" them\n");
828	printf("\t--showcmd\tTurn a job file into command line options\n");
829	printf("\t--eta=when\tWhen ETA estimate should be printed\n");
830	printf("\t          \tMay be \"always\", \"never\" or \"auto\"\n");
831	printf("\t--readonly\tTurn on safety read-only checks, preventing"
832		" writes\n");
833	printf("\t--section=name\tOnly run specified section in job file\n");
834	printf("\t--alloc-size=kb\tSet smalloc pool to this size in kb"
835		" (def 1024)\n");
836}
837
838#ifdef FIO_INC_DEBUG
839struct debug_level debug_levels[] = {
840	{ .name = "process",	.shift = FD_PROCESS, },
841	{ .name = "file",	.shift = FD_FILE, },
842	{ .name = "io",		.shift = FD_IO, },
843	{ .name = "mem",	.shift = FD_MEM, },
844	{ .name = "blktrace",	.shift = FD_BLKTRACE },
845	{ .name = "verify",	.shift = FD_VERIFY },
846	{ .name = "random",	.shift = FD_RANDOM },
847	{ .name = "parse",	.shift = FD_PARSE },
848	{ .name = "diskutil",	.shift = FD_DISKUTIL },
849	{ },
850};
851
852static int set_debug(const char *string)
853{
854	struct debug_level *dl;
855	char *p = (char *) string;
856	char *opt;
857	int i;
858
859	if (!strcmp(string, "?") || !strcmp(string, "help")) {
860		int i;
861
862		log_info("fio: dumping debug options:");
863		for (i = 0; debug_levels[i].name; i++) {
864			dl = &debug_levels[i];
865			log_info("%s,", dl->name);
866		}
867		log_info("all\n");
868		return 1;
869	} else if (!strcmp(string, "all")) {
870		fio_debug = ~0UL;
871		return 0;
872	}
873
874	while ((opt = strsep(&p, ",")) != NULL) {
875		int found = 0;
876
877		for (i = 0; debug_levels[i].name; i++) {
878			dl = &debug_levels[i];
879			if (!strncmp(opt, dl->name, strlen(opt))) {
880				log_info("fio: set debug option %s\n", opt);
881				found = 1;
882				fio_debug |= (1UL << dl->shift);
883				break;
884			}
885		}
886
887		if (!found)
888			log_err("fio: debug mask %s not found\n", opt);
889	}
890	return 0;
891}
892#else
893static void set_debug(const char *string)
894{
895	log_err("fio: debug tracing not included in build\n");
896	return 1;
897}
898#endif
899
900static int parse_cmd_line(int argc, char *argv[])
901{
902	struct thread_data *td = NULL;
903	int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
904
905	while ((c = getopt_long_only(argc, argv, "", l_opts, &lidx)) != -1) {
906		switch (c) {
907		case 'a':
908			smalloc_pool_size = atoi(optarg);
909			break;
910		case 't':
911			def_timeout = atoi(optarg);
912			break;
913		case 'l':
914			write_lat_log = 1;
915			break;
916		case 'w':
917			write_bw_log = 1;
918			break;
919		case 'o':
920			f_out = fopen(optarg, "w+");
921			if (!f_out) {
922				perror("fopen output");
923				exit(1);
924			}
925			f_err = f_out;
926			break;
927		case 'm':
928			terse_output = 1;
929			break;
930		case 'h':
931			usage(argv[0]);
932			exit(0);
933		case 'c':
934			exit(fio_show_option_help(optarg));
935		case 's':
936			dump_cmdline = 1;
937			break;
938		case 'r':
939			read_only = 1;
940			break;
941		case 'v':
942			printf("%s\n", fio_version_string);
943			exit(0);
944		case 'e':
945			if (!strcmp("always", optarg))
946				eta_print = FIO_ETA_ALWAYS;
947			else if (!strcmp("never", optarg))
948				eta_print = FIO_ETA_NEVER;
949			break;
950		case 'd':
951			if (set_debug(optarg))
952				do_exit++;
953			break;
954		case 'x':
955			if (!strcmp(optarg, "global")) {
956				log_err("fio: can't use global as only "
957					"section\n");
958				do_exit++;
959				exit_val = 1;
960				break;
961			}
962			if (job_section)
963				free(job_section);
964			job_section = strdup(optarg);
965			break;
966		case FIO_GETOPT_JOB: {
967			const char *opt = l_opts[lidx].name;
968			char *val = optarg;
969
970			if (!strncmp(opt, "name", 4) && td) {
971				ret = add_job(td, td->o.name ?: "fio", 0);
972				if (ret) {
973					put_job(td);
974					return 0;
975				}
976				td = NULL;
977			}
978			if (!td) {
979				int is_section = !strncmp(opt, "name", 4);
980				int global = 0;
981
982				if (!is_section || !strncmp(val, "global", 6))
983					global = 1;
984
985				if (is_section && skip_this_section(val))
986					continue;
987
988				td = get_new_job(global, &def_thread);
989				if (!td)
990					return 0;
991			}
992
993			ret = fio_cmd_option_parse(td, opt, val);
994			break;
995		}
996		default:
997			do_exit++;
998			exit_val = 1;
999			break;
1000		}
1001	}
1002
1003	if (do_exit)
1004		exit(exit_val);
1005
1006	if (td) {
1007		if (!ret)
1008			ret = add_job(td, td->o.name ?: "fio", 0);
1009		if (ret)
1010			put_job(td);
1011	}
1012
1013	while (optind < argc) {
1014		ini_idx++;
1015		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1016		ini_file[ini_idx - 1] = strdup(argv[optind]);
1017		optind++;
1018	}
1019
1020	return ini_idx;
1021}
1022
1023int parse_options(int argc, char *argv[])
1024{
1025	int job_files, i;
1026
1027	f_out = stdout;
1028	f_err = stderr;
1029
1030	fio_options_dup_and_init(l_opts);
1031
1032	if (setup_thread_area())
1033		return 1;
1034	if (fill_def_thread())
1035		return 1;
1036
1037	job_files = parse_cmd_line(argc, argv);
1038
1039	for (i = 0; i < job_files; i++) {
1040		if (fill_def_thread())
1041			return 1;
1042		if (parse_jobs_ini(ini_file[i], i))
1043			return 1;
1044		free(ini_file[i]);
1045	}
1046
1047	free(ini_file);
1048	options_mem_free(&def_thread);
1049
1050	if (!thread_number) {
1051		if (dump_cmdline)
1052			return 0;
1053
1054		log_err("No jobs defined(s)\n");
1055		usage(argv[0]);
1056		return 1;
1057	}
1058
1059	return 0;
1060}
1061