init.c revision e0a223354342cc45a916b669343718b80a20c2ea 
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 <assert.h>
13#include <sys/ipc.h>
14#include <sys/shm.h>
15#include <sys/types.h>
16#include <sys/stat.h>
17
18#include "fio.h"
19#include "parse.h"
20
21/*
22 * The default options
23 */
24#define DEF_BS			(4096)
25#define DEF_TIMEOUT		(0)
26#define DEF_RATE_CYCLE		(1000)
27#define DEF_ODIRECT		(1)
28#define DEF_IO_ENGINE		(FIO_SYNCIO)
29#define DEF_IO_ENGINE_NAME	"sync"
30#define DEF_SEQUENTIAL		(1)
31#define DEF_RAND_REPEAT		(1)
32#define DEF_OVERWRITE		(0)
33#define DEF_INVALIDATE		(1)
34#define DEF_SYNCIO		(0)
35#define DEF_RANDSEED		(0xb1899bedUL)
36#define DEF_BWAVGTIME		(500)
37#define DEF_CREATE_SER		(1)
38#define DEF_CREATE_FSYNC	(1)
39#define DEF_LOOPS		(1)
40#define DEF_VERIFY		(0)
41#define DEF_STONEWALL		(0)
42#define DEF_NUMJOBS		(1)
43#define DEF_USE_THREAD		(0)
44#define DEF_FILE_SIZE		(1024 * 1024 * 1024UL)
45#define DEF_ZONE_SIZE		(0)
46#define DEF_ZONE_SKIP		(0)
47#define DEF_RWMIX_CYCLE		(500)
48#define DEF_RWMIX_READ		(50)
49#define DEF_NICE		(0)
50#define DEF_NR_FILES		(1)
51#define DEF_UNLINK		(1)
52#define DEF_WRITE_BW_LOG	(0)
53#define DEF_WRITE_LAT_LOG	(0)
54#define DEF_NO_RAND_MAP		(0)
55
56#define td_var_offset(var)	((size_t) &((struct thread_data *)0)->var)
57
58static int str_rw_cb(void *, const char *);
59static int str_ioengine_cb(void *, const char *);
60static int str_mem_cb(void *, const char *);
61static int str_verify_cb(void *, const char *);
62static int str_lockmem_cb(void *, unsigned long *);
63#ifdef FIO_HAVE_IOPRIO
64static int str_prio_cb(void *, unsigned int *);
65static int str_prioclass_cb(void *, unsigned int *);
66#endif
67static int str_exitall_cb(void);
68static int str_cpumask_cb(void *, unsigned int *);
69
70/*
71 * Map of job/command line options
72 */
73static struct fio_option options[] = {
74	{
75		.name	= "name",
76		.type	= FIO_OPT_STR_STORE,
77		.off1	= td_var_offset(name),
78	},
79	{
80		.name	= "directory",
81		.type	= FIO_OPT_STR_STORE,
82		.off1	= td_var_offset(directory),
83	},
84	{
85		.name	= "filename",
86		.type	= FIO_OPT_STR_STORE,
87		.off1	= td_var_offset(filename),
88	},
89	{
90		.name	= "rw",
91		.type	= FIO_OPT_STR,
92		.cb	= str_rw_cb,
93	},
94	{
95		.name	= "ioengine",
96		.type	= FIO_OPT_STR,
97		.cb	= str_ioengine_cb,
98	},
99	{
100		.name	= "mem",
101		.type	= FIO_OPT_STR,
102		.cb	= str_mem_cb,
103	},
104	{
105		.name	= "verify",
106		.type	= FIO_OPT_STR,
107		.cb	= str_verify_cb,
108	},
109	{
110		.name	= "write_iolog",
111		.type	= FIO_OPT_STR_STORE,
112		.off1	= td_var_offset(write_iolog_file),
113	},
114	{
115		.name	= "read_iolog",
116		.type	= FIO_OPT_STR_STORE,
117		.off1	= td_var_offset(read_iolog_file),
118	},
119	{
120		.name	= "exec_prerun",
121		.type	= FIO_OPT_STR_STORE,
122		.off1	= td_var_offset(exec_prerun),
123	},
124	{
125		.name	= "exec_postrun",
126		.type	= FIO_OPT_STR_STORE,
127		.off1	= td_var_offset(exec_postrun),
128	},
129#ifdef FIO_HAVE_IOSCHED_SWITCH
130	{
131		.name	= "ioscheduler",
132		.type	= FIO_OPT_STR_STORE,
133		.off1	= td_var_offset(ioscheduler),
134	},
135#endif
136	{
137		.name	= "size",
138		.type	= FIO_OPT_STR_VAL,
139		.off1	= td_var_offset(total_file_size),
140	},
141	{
142		.name	= "bs",
143		.type	= FIO_OPT_STR_VAL_INT,
144		.off1	= td_var_offset(bs[DDIR_READ]),
145		.off2	= td_var_offset(bs[DDIR_WRITE]),
146	},
147	{
148		.name	= "offset",
149		.type	= FIO_OPT_STR_VAL,
150		.off1	= td_var_offset(start_offset),
151	},
152	{
153		.name	= "zonesize",
154		.type	= FIO_OPT_STR_VAL,
155		.off1	= td_var_offset(zone_size),
156	},
157	{
158		.name	= "zoneskip",
159		.type	= FIO_OPT_STR_VAL,
160		.off1	= td_var_offset(zone_skip),
161	},
162	{
163		.name	= "lockmem",
164		.type	= FIO_OPT_STR_VAL,
165		.cb	= str_lockmem_cb,
166	},
167	{
168		.name	= "bsrange",
169		.type	= FIO_OPT_RANGE,
170		.off1	= td_var_offset(min_bs[DDIR_READ]),
171		.off2	= td_var_offset(max_bs[DDIR_READ]),
172		.off3	= td_var_offset(min_bs[DDIR_WRITE]),
173		.off4	= td_var_offset(max_bs[DDIR_WRITE]),
174	},
175	{
176		.name	= "nrfiles",
177		.type	= FIO_OPT_INT,
178		.off1	= td_var_offset(nr_files),
179	},
180	{
181		.name	= "iodepth",
182		.type	= FIO_OPT_INT,
183		.off1	= td_var_offset(iodepth),
184	},
185	{
186		.name	= "fsync",
187		.type	= FIO_OPT_INT,
188		.off1	= td_var_offset(fsync_blocks),
189	},
190	{
191		.name	= "rwmixcycle",
192		.type	= FIO_OPT_INT,
193		.off1	= td_var_offset(rwmixcycle),
194	},
195	{
196		.name	= "rwmixread",
197		.type	= FIO_OPT_INT,
198		.off1	= td_var_offset(rwmixread),
199		.max_val= 100,
200	},
201	{
202		.name	= "rwmixwrite",
203		.type	= FIO_OPT_INT,
204		.off1	= td_var_offset(rwmixwrite),
205		.max_val= 100,
206	},
207	{
208		.name	= "nice",
209		.type	= FIO_OPT_INT,
210		.off1	= td_var_offset(nice),
211	},
212#ifdef FIO_HAVE_IOPRIO
213	{
214		.name	= "prio",
215		.type	= FIO_OPT_INT,
216		.cb	= str_prio_cb,
217	},
218	{
219		.name	= "prioclass",
220		.type	= FIO_OPT_INT,
221		.cb	= str_prioclass_cb,
222	},
223#endif
224	{
225		.name	= "thinktime",
226		.type	= FIO_OPT_INT,
227		.off1	= td_var_offset(thinktime)
228	},
229	{
230		.name	= "rate",
231		.type	= FIO_OPT_INT,
232		.off1	= td_var_offset(rate)
233	},
234	{
235		.name	= "ratemin",
236		.type	= FIO_OPT_INT,
237		.off1	= td_var_offset(ratemin)
238	},
239	{
240		.name	= "ratecycle",
241		.type	= FIO_OPT_INT,
242		.off1	= td_var_offset(ratecycle)
243	},
244	{
245		.name	= "startdelay",
246		.type	= FIO_OPT_INT,
247		.off1	= td_var_offset(start_delay)
248	},
249	{
250		.name	= "timeout",
251		.type	= FIO_OPT_STR_VAL_TIME,
252		.off1	= td_var_offset(timeout)
253	},
254	{
255		.name	= "invalidate",
256		.type	= FIO_OPT_INT,
257		.off1	= td_var_offset(invalidate_cache)
258	},
259	{
260		.name	= "sync",
261		.type	= FIO_OPT_INT,
262		.off1	= td_var_offset(sync_io)
263	},
264	{
265		.name	= "bwavgtime",
266		.type	= FIO_OPT_INT,
267		.off1	= td_var_offset(bw_avg_time)
268	},
269	{
270		.name	= "create_serialize",
271		.type	= FIO_OPT_INT,
272		.off1	= td_var_offset(create_serialize)
273	},
274	{
275		.name	= "create_fsync",
276		.type	= FIO_OPT_INT,
277		.off1	= td_var_offset(create_fsync)
278	},
279	{
280		.name	= "loops",
281		.type	= FIO_OPT_INT,
282		.off1	= td_var_offset(loops)
283	},
284	{
285		.name	= "numjobs",
286		.type	= FIO_OPT_INT,
287		.off1	= td_var_offset(numjobs)
288	},
289	{
290		.name	= "cpuload",
291		.type	= FIO_OPT_INT,
292		.off1	= td_var_offset(cpuload)
293	},
294	{
295		.name	= "cpuchunks",
296		.type	= FIO_OPT_INT,
297		.off1	= td_var_offset(cpucycle)
298	},
299	{
300		.name	= "direct",
301		.type	= FIO_OPT_INT,
302		.off1	= td_var_offset(odirect)
303	},
304	{
305		.name	= "overwrite",
306		.type	= FIO_OPT_INT,
307		.off1	= td_var_offset(overwrite)
308	},
309#ifdef FIO_HAVE_CPU_AFFINITY
310	{
311		.name	= "cpumask",
312		.type	= FIO_OPT_INT,
313		.cb	= str_cpumask_cb,
314	},
315#endif
316	{
317		.name	= "end_fsync",
318		.type	= FIO_OPT_INT,
319		.off1	= td_var_offset(end_fsync)
320	},
321	{
322		.name	= "unlink",
323		.type	= FIO_OPT_STR_SET,
324		.off1	= td_var_offset(unlink),
325	},
326	{
327		.name	= "exitall",
328		.type	= FIO_OPT_STR_SET,
329		.cb	= str_exitall_cb,
330	},
331	{
332		.name	= "stonewall",
333		.type	= FIO_OPT_STR_SET,
334		.off1	= td_var_offset(stonewall),
335	},
336	{
337		.name	= "thread",
338		.type	= FIO_OPT_STR_SET,
339		.off1	= td_var_offset(thread),
340	},
341	{
342		.name	= "write_bw_log",
343		.type	= FIO_OPT_STR_SET,
344		.off1	= td_var_offset(write_bw_log),
345	},
346	{
347		.name	= "write_lat_log",
348		.type	= FIO_OPT_STR_SET,
349		.off1	= td_var_offset(write_lat_log),
350	},
351	{
352		.name	= "norandommap",
353		.type	= FIO_OPT_STR_SET,
354		.off1	= td_var_offset(norandommap),
355	},
356	{
357		.name	= "bs_unaligned",
358		.type	= FIO_OPT_STR_SET,
359		.off1	= td_var_offset(bs_unaligned),
360	},
361	{
362		.name = NULL,
363	},
364};
365
366#define FIO_JOB_OPTS	(sizeof(options) / sizeof(struct fio_option))
367#define FIO_CMD_OPTS	(16)
368#define FIO_GETOPT_JOB	(0x89988998)
369
370/*
371 * Command line options. These will contain the above, plus a few
372 * extra that only pertain to fio itself and not jobs.
373 */
374static struct option long_options[FIO_JOB_OPTS + FIO_CMD_OPTS] = {
375	{
376		.name		= "output",
377		.has_arg	= required_argument,
378		.val		= 'o',
379	},
380	{
381		.name		= "timeout",
382		.has_arg	= required_argument,
383		.val		= 't',
384	},
385	{
386		.name		= "latency-log",
387		.has_arg	= required_argument,
388		.val		= 'l',
389	},
390	{
391		.name		= "bandwidth-log",
392		.has_arg	= required_argument,
393		.val		= 'b',
394	},
395	{
396		.name		= "minimal",
397		.has_arg	= optional_argument,
398		.val		= 'm',
399	},
400	{
401		.name		= "version",
402		.has_arg	= no_argument,
403		.val		= 'v',
404	},
405	{
406		.name		= NULL,
407	},
408};
409
410static int def_timeout = DEF_TIMEOUT;
411
412static char fio_version_string[] = "fio 1.9";
413
414static char **ini_file;
415static int max_jobs = MAX_JOBS;
416
417struct thread_data def_thread;
418struct thread_data *threads = NULL;
419
420int exitall_on_terminate = 0;
421int terse_output = 0;
422unsigned long long mlock_size = 0;
423FILE *f_out = NULL;
424FILE *f_err = NULL;
425
426static int write_lat_log = DEF_WRITE_LAT_LOG;
427static int write_bw_log = DEF_WRITE_BW_LOG;
428
429/*
430 * Return a free job structure.
431 */
432static struct thread_data *get_new_job(int global, struct thread_data *parent)
433{
434	struct thread_data *td;
435
436	if (global)
437		return &def_thread;
438	if (thread_number >= max_jobs)
439		return NULL;
440
441	td = &threads[thread_number++];
442	*td = *parent;
443
444	td->thread_number = thread_number;
445	return td;
446}
447
448static void put_job(struct thread_data *td)
449{
450	if (td == &def_thread)
451		return;
452
453	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
454	thread_number--;
455}
456
457/*
458 * Lazy way of fixing up options that depend on each other. We could also
459 * define option callback handlers, but this is easier.
460 */
461static void fixup_options(struct thread_data *td)
462{
463	if (!td->rwmixread && td->rwmixwrite)
464		td->rwmixread = 100 - td->rwmixwrite;
465
466	if (td->write_iolog_file && td->read_iolog_file) {
467		log_err("fio: read iolog overrides write_iolog\n");
468		free(td->write_iolog_file);
469		td->write_iolog_file = NULL;
470	}
471
472	if (td->io_ops->flags & FIO_SYNCIO)
473		td->iodepth = 1;
474	else {
475		if (!td->iodepth)
476			td->iodepth = td->nr_files;
477	}
478
479	/*
480	 * only really works for sequential io for now, and with 1 file
481	 */
482	if (td->zone_size && !td->sequential && td->nr_files == 1)
483		td->zone_size = 0;
484
485	/*
486	 * Reads can do overwrites, we always need to pre-create the file
487	 */
488	if (td_read(td) || td_rw(td))
489		td->overwrite = 1;
490
491	if (!td->min_bs[DDIR_READ])
492		td->min_bs[DDIR_READ]= td->bs[DDIR_READ];
493	if (!td->max_bs[DDIR_READ])
494		td->max_bs[DDIR_READ] = td->bs[DDIR_READ];
495	if (!td->min_bs[DDIR_WRITE])
496		td->min_bs[DDIR_WRITE]= td->bs[DDIR_WRITE];
497	if (!td->max_bs[DDIR_WRITE])
498		td->max_bs[DDIR_WRITE] = td->bs[DDIR_WRITE];
499
500	td->rw_min_bs = min(td->min_bs[DDIR_READ], td->min_bs[DDIR_WRITE]);
501
502	if (td_read(td) && !td_rw(td))
503		td->verify = 0;
504
505	if (td->norandommap && td->verify != VERIFY_NONE) {
506		log_err("fio: norandommap given, verify disabled\n");
507		td->verify = VERIFY_NONE;
508	}
509	if (td->bs_unaligned && (td->odirect || td->io_ops->flags & FIO_RAWIO))
510		log_err("fio: bs_unaligned may not work with raw io\n");
511
512	/*
513	 * O_DIRECT and char doesn't mix, clear that flag if necessary.
514	 */
515	if (td->filetype == FIO_TYPE_CHAR && td->odirect)
516		td->odirect = 0;
517}
518
519/*
520 * This function leaks the buffer
521 */
522static char *to_kmg(unsigned int val)
523{
524	char *buf = malloc(32);
525	char post[] = { 0, 'K', 'M', 'G', 'P', 0 };
526	char *p = post;
527
528	do {
529		if (val & 1023)
530			break;
531
532		val >>= 10;
533		p++;
534	} while (*p);
535
536	snprintf(buf, 31, "%u%c", val, *p);
537	return buf;
538}
539
540/*
541 * Adds a job to the list of things todo. Sanitizes the various options
542 * to make sure we don't have conflicts, and initializes various
543 * members of td.
544 */
545static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
546{
547	const char *ddir_str[] = { "read", "write", "randread", "randwrite",
548				   "rw", NULL, "randrw" };
549	struct stat sb;
550	int numjobs, ddir, i;
551	struct fio_file *f;
552
553	/*
554	 * the def_thread is just for options, it's not a real job
555	 */
556	if (td == &def_thread)
557		return 0;
558
559	/*
560	 * Set default io engine, if none set
561	 */
562	if (!td->io_ops) {
563		td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
564		if (!td->io_ops) {
565			log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
566			return 1;
567		}
568	}
569
570	if (td->odirect)
571		td->io_ops->flags |= FIO_RAWIO;
572
573	td->filetype = FIO_TYPE_FILE;
574	if (!stat(jobname, &sb)) {
575		if (S_ISBLK(sb.st_mode))
576			td->filetype = FIO_TYPE_BD;
577		else if (S_ISCHR(sb.st_mode))
578			td->filetype = FIO_TYPE_CHAR;
579	}
580
581	fixup_options(td);
582
583	if (td->filename)
584		td->nr_uniq_files = 1;
585	else
586		td->nr_uniq_files = td->nr_files;
587
588	if (td->filetype == FIO_TYPE_FILE || td->filename) {
589		char tmp[PATH_MAX];
590		int len = 0;
591
592		if (td->directory && td->directory[0] != '\0')
593			sprintf(tmp, "%s/", td->directory);
594
595		td->files = malloc(sizeof(struct fio_file) * td->nr_files);
596
597		for_each_file(td, f, i) {
598			memset(f, 0, sizeof(*f));
599			f->fd = -1;
600
601			if (td->filename)
602				sprintf(tmp + len, "%s", td->filename);
603			else
604				sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
605			f->file_name = strdup(tmp);
606		}
607	} else {
608		td->nr_files = 1;
609		td->files = malloc(sizeof(struct fio_file));
610		f = &td->files[0];
611
612		memset(f, 0, sizeof(*f));
613		f->fd = -1;
614		f->file_name = strdup(jobname);
615	}
616
617	for_each_file(td, f, i) {
618		f->file_size = td->total_file_size / td->nr_files;
619		f->file_offset = td->start_offset;
620	}
621
622	fio_sem_init(&td->mutex, 0);
623
624	td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
625	td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
626	td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
627
628	if (td->stonewall && td->thread_number > 1)
629		groupid++;
630
631	td->groupid = groupid;
632
633	if (setup_rate(td))
634		goto err;
635
636	if (td->write_lat_log) {
637		setup_log(&td->slat_log);
638		setup_log(&td->clat_log);
639	}
640	if (td->write_bw_log)
641		setup_log(&td->bw_log);
642
643	if (!td->name)
644		td->name = strdup(jobname);
645
646	ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
647
648	if (!terse_output) {
649		if (!job_add_num) {
650			if (td->io_ops->flags & FIO_CPUIO)
651				fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
652			else {
653				char *c1, *c2, *c3, *c4;
654
655				c1 = to_kmg(td->min_bs[DDIR_READ]);
656				c2 = to_kmg(td->max_bs[DDIR_READ]);
657				c3 = to_kmg(td->min_bs[DDIR_WRITE]);
658				c4 = to_kmg(td->max_bs[DDIR_WRITE]);
659
660				fprintf(f_out, "%s: (g=%d): rw=%s, odir=%u, bs=%s-%s/%s-%s, rate=%u, ioengine=%s, iodepth=%u\n", td->name, td->groupid, ddir_str[ddir], td->odirect, c1, c2, c3, c4, td->rate, td->io_ops->name, td->iodepth);
661
662				free(c1);
663				free(c2);
664				free(c3);
665				free(c4);
666			}
667		} else if (job_add_num == 1)
668			fprintf(f_out, "...\n");
669	}
670
671	/*
672	 * recurse add identical jobs, clear numjobs and stonewall options
673	 * as they don't apply to sub-jobs
674	 */
675	numjobs = td->numjobs;
676	while (--numjobs) {
677		struct thread_data *td_new = get_new_job(0, td);
678
679		if (!td_new)
680			goto err;
681
682		td_new->numjobs = 1;
683		td_new->stonewall = 0;
684		job_add_num = numjobs - 1;
685
686		if (add_job(td_new, jobname, job_add_num))
687			goto err;
688	}
689	return 0;
690err:
691	put_job(td);
692	return -1;
693}
694
695/*
696 * Initialize the various random states we need (random io, block size ranges,
697 * read/write mix, etc).
698 */
699int init_random_state(struct thread_data *td)
700{
701	unsigned long seeds[4];
702	int fd, num_maps, blocks, i;
703	struct fio_file *f;
704
705	if (td->io_ops->flags & FIO_CPUIO)
706		return 0;
707
708	fd = open("/dev/urandom", O_RDONLY);
709	if (fd == -1) {
710		td_verror(td, errno);
711		return 1;
712	}
713
714	if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
715		td_verror(td, EIO);
716		close(fd);
717		return 1;
718	}
719
720	close(fd);
721
722	os_random_seed(seeds[0], &td->bsrange_state);
723	os_random_seed(seeds[1], &td->verify_state);
724	os_random_seed(seeds[2], &td->rwmix_state);
725
726	if (td->sequential)
727		return 0;
728
729	if (td->rand_repeatable)
730		seeds[3] = DEF_RANDSEED;
731
732	if (!td->norandommap) {
733		for_each_file(td, f, i) {
734			blocks = (f->file_size + td->rw_min_bs - 1) / td->rw_min_bs;
735			num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
736			f->file_map = malloc(num_maps * sizeof(long));
737			f->num_maps = num_maps;
738			memset(f->file_map, 0, num_maps * sizeof(long));
739		}
740	}
741
742	os_random_seed(seeds[3], &td->random_state);
743	return 0;
744}
745
746static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
747{
748#ifdef FIO_HAVE_CPU_AFFINITY
749	unsigned int i;
750
751	CPU_ZERO(&cpumask);
752
753	for (i = 0; i < sizeof(int) * 8; i++) {
754		if ((1 << i) & cpu)
755			CPU_SET(i, &cpumask);
756	}
757#endif
758}
759
760static int is_empty_or_comment(char *line)
761{
762	unsigned int i;
763
764	for (i = 0; i < strlen(line); i++) {
765		if (line[i] == ';')
766			return 1;
767		if (!isspace(line[i]) && !iscntrl(line[i]))
768			return 0;
769	}
770
771	return 1;
772}
773
774static int str_rw_cb(void *data, const char *mem)
775{
776	struct thread_data *td = data;
777
778	if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
779		td->ddir = DDIR_READ;
780		td->sequential = 1;
781		return 0;
782	} else if (!strncmp(mem, "randread", 8)) {
783		td->ddir = DDIR_READ;
784		td->sequential = 0;
785		return 0;
786	} else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
787		td->ddir = DDIR_WRITE;
788		td->sequential = 1;
789		return 0;
790	} else if (!strncmp(mem, "randwrite", 9)) {
791		td->ddir = DDIR_WRITE;
792		td->sequential = 0;
793		return 0;
794	} else if (!strncmp(mem, "rw", 2)) {
795		td->ddir = DDIR_READ;
796		td->iomix = 1;
797		td->sequential = 1;
798		return 0;
799	} else if (!strncmp(mem, "randrw", 6)) {
800		td->ddir = DDIR_READ;
801		td->iomix = 1;
802		td->sequential = 0;
803		return 0;
804	}
805
806	log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
807	return 1;
808}
809
810static int str_verify_cb(void *data, const char *mem)
811{
812	struct thread_data *td = data;
813
814	if (!strncmp(mem, "0", 1)) {
815		td->verify = VERIFY_NONE;
816		return 0;
817	} else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
818		td->verify = VERIFY_MD5;
819		return 0;
820	} else if (!strncmp(mem, "crc32", 5)) {
821		td->verify = VERIFY_CRC32;
822		return 0;
823	}
824
825	log_err("fio: verify types: md5, crc32\n");
826	return 1;
827}
828
829static int str_mem_cb(void *data, const char *mem)
830{
831	struct thread_data *td = data;
832
833	if (!strncmp(mem, "malloc", 6)) {
834		td->mem_type = MEM_MALLOC;
835		return 0;
836	} else if (!strncmp(mem, "mmap", 4)) {
837		td->mem_type = MEM_MMAP;
838		return 0;
839	} else if (!strncmp(mem, "shmhuge", 7)) {
840#ifdef FIO_HAVE_HUGETLB
841		td->mem_type = MEM_SHMHUGE;
842		return 0;
843#else
844		log_err("fio: shmhuge not available\n");
845		return 1;
846#endif
847	} else if (!strncmp(mem, "shm", 3)) {
848		td->mem_type = MEM_SHM;
849		return 0;
850	}
851
852	log_err("fio: mem type: malloc, shm, mmap, shmhuge\n");
853	return 1;
854}
855
856static int str_ioengine_cb(void *data, const char *str)
857{
858	struct thread_data *td = data;
859
860	td->io_ops = load_ioengine(td, str);
861	if (td->io_ops)
862		return 0;
863
864	log_err("fio: ioengine= libaio, posixaio, sync, mmap, sgio, splice, cpu, null\n");
865	log_err("fio: or specify path to dynamic ioengine module\n");
866	return 1;
867}
868
869static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
870{
871	mlock_size = *val;
872	return 0;
873}
874
875#ifdef FIO_HAVE_IOPRIO
876static int str_prioclass_cb(void *data, unsigned int *val)
877{
878	struct thread_data *td = data;
879
880	td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
881	return 0;
882}
883
884static int str_prio_cb(void *data, unsigned int *val)
885{
886	struct thread_data *td = data;
887
888	td->ioprio |= *val;
889	return 0;
890}
891#endif
892
893static int str_exitall_cb(void)
894{
895	exitall_on_terminate = 1;
896	return 0;
897}
898
899static int str_cpumask_cb(void *data, unsigned int *val)
900{
901	struct thread_data *td = data;
902
903	fill_cpu_mask(td->cpumask, *val);
904	return 0;
905}
906
907/*
908 * This is our [ini] type file parser.
909 */
910static int parse_jobs_ini(char *file, int stonewall_flag)
911{
912	unsigned int global;
913	struct thread_data *td;
914	char *string, *name;
915	fpos_t off;
916	FILE *f;
917	char *p;
918	int ret = 0, stonewall;
919
920	f = fopen(file, "r");
921	if (!f) {
922		perror("fopen job file");
923		return 1;
924	}
925
926	string = malloc(4096);
927	name = malloc(256);
928	memset(name, 0, 256);
929
930	stonewall = stonewall_flag;
931	do {
932		p = fgets(string, 4095, f);
933		if (!p)
934			break;
935		if (is_empty_or_comment(p))
936			continue;
937		if (sscanf(p, "[%255s]", name) != 1)
938			continue;
939
940		global = !strncmp(name, "global", 6);
941
942		name[strlen(name) - 1] = '\0';
943
944		td = get_new_job(global, &def_thread);
945		if (!td) {
946			ret = 1;
947			break;
948		}
949
950		/*
951		 * Seperate multiple job files by a stonewall
952		 */
953		if (!global && stonewall) {
954			td->stonewall = stonewall;
955			stonewall = 0;
956		}
957
958		fgetpos(f, &off);
959		while ((p = fgets(string, 4096, f)) != NULL) {
960			if (is_empty_or_comment(p))
961				continue;
962
963			strip_blank_front(&p);
964
965			if (p[0] == '[')
966				break;
967
968			strip_blank_end(p);
969
970			fgetpos(f, &off);
971
972			/*
973			 * Don't break here, continue parsing options so we
974			 * dump all the bad ones. Makes trial/error fixups
975			 * easier on the user.
976			 */
977			ret |= parse_option(p, options, td);
978		}
979
980		if (!ret) {
981			fsetpos(f, &off);
982			ret = add_job(td, name, 0);
983		} else {
984			log_err("fio: job %s dropped\n", name);
985			put_job(td);
986		}
987	} while (!ret);
988
989	free(string);
990	free(name);
991	fclose(f);
992	return ret;
993}
994
995static int fill_def_thread(void)
996{
997	memset(&def_thread, 0, sizeof(def_thread));
998
999	if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1000		perror("sched_getaffinity");
1001		return 1;
1002	}
1003
1004	/*
1005	 * fill globals
1006	 */
1007	def_thread.ddir = DDIR_READ;
1008	def_thread.iomix = 0;
1009	def_thread.bs[DDIR_READ] = DEF_BS;
1010	def_thread.bs[DDIR_WRITE] = DEF_BS;
1011	def_thread.min_bs[DDIR_READ] = def_thread.min_bs[DDIR_WRITE] = 0;
1012	def_thread.max_bs[DDIR_READ] = def_thread.max_bs[DDIR_WRITE] = 0;
1013	def_thread.odirect = DEF_ODIRECT;
1014	def_thread.ratecycle = DEF_RATE_CYCLE;
1015	def_thread.sequential = DEF_SEQUENTIAL;
1016	def_thread.timeout = def_timeout;
1017	def_thread.overwrite = DEF_OVERWRITE;
1018	def_thread.invalidate_cache = DEF_INVALIDATE;
1019	def_thread.sync_io = DEF_SYNCIO;
1020	def_thread.mem_type = MEM_MALLOC;
1021	def_thread.bw_avg_time = DEF_BWAVGTIME;
1022	def_thread.create_serialize = DEF_CREATE_SER;
1023	def_thread.create_fsync = DEF_CREATE_FSYNC;
1024	def_thread.loops = DEF_LOOPS;
1025	def_thread.verify = DEF_VERIFY;
1026	def_thread.stonewall = DEF_STONEWALL;
1027	def_thread.numjobs = DEF_NUMJOBS;
1028	def_thread.use_thread = DEF_USE_THREAD;
1029	def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1030	def_thread.rwmixread = DEF_RWMIX_READ;
1031	def_thread.nice = DEF_NICE;
1032	def_thread.rand_repeatable = DEF_RAND_REPEAT;
1033	def_thread.nr_files = DEF_NR_FILES;
1034	def_thread.unlink = DEF_UNLINK;
1035	def_thread.write_bw_log = write_bw_log;
1036	def_thread.write_lat_log = write_lat_log;
1037	def_thread.norandommap = DEF_NO_RAND_MAP;
1038#ifdef FIO_HAVE_DISK_UTIL
1039	def_thread.do_disk_util = 1;
1040#endif
1041
1042	return 0;
1043}
1044
1045static void usage(void)
1046{
1047	printf("%s\n", fio_version_string);
1048	printf("\t--output\tWrite output to file\n");
1049	printf("\t--timeout\tRuntime in seconds\n");
1050	printf("\t--latency-log\tGenerate per-job latency logs\n");
1051	printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
1052	printf("\t--minimal\tMinimal (terse) output\n");
1053	printf("\t--version\tPrint version info and exit\n");
1054}
1055
1056static int parse_cmd_line(int argc, char *argv[])
1057{
1058	struct thread_data *td = NULL;
1059	int c, ini_idx = 0, lidx, ret;
1060
1061	while ((c = getopt_long(argc, argv, "", long_options, &lidx)) != -1) {
1062		switch (c) {
1063		case 't':
1064			def_timeout = atoi(optarg);
1065			break;
1066		case 'l':
1067			write_lat_log = 1;
1068			break;
1069		case 'w':
1070			write_bw_log = 1;
1071			break;
1072		case 'o':
1073			f_out = fopen(optarg, "w+");
1074			if (!f_out) {
1075				perror("fopen output");
1076				exit(1);
1077			}
1078			f_err = f_out;
1079			break;
1080		case 'm':
1081			terse_output = 1;
1082			break;
1083		case 'h':
1084			usage();
1085			exit(0);
1086		case 'v':
1087			printf("%s\n", fio_version_string);
1088			exit(0);
1089		case FIO_GETOPT_JOB: {
1090			const char *opt = long_options[lidx].name;
1091			char *val = optarg;
1092
1093			if (!strncmp(opt, "name", 4) && td) {
1094				ret = add_job(td, td->name ?: "fio", 0);
1095				if (ret) {
1096					put_job(td);
1097					return 0;
1098				}
1099				td = NULL;
1100			}
1101			if (!td) {
1102				int global = !strncmp(val, "global", 6);
1103
1104				td = get_new_job(global, &def_thread);
1105				if (!td)
1106					return 0;
1107			}
1108
1109			ret = parse_cmd_option(opt, val, options, td);
1110			if (ret) {
1111				log_err("fio: job dropped\n");
1112				put_job(td);
1113				td = NULL;
1114			}
1115			break;
1116		}
1117		default:
1118			printf("optarg <<%s>>\n", argv[optind]);
1119			break;
1120		}
1121	}
1122
1123	if (td) {
1124		ret = add_job(td, td->name ?: "fio", 0);
1125		if (ret)
1126			put_job(td);
1127	}
1128
1129	while (optind < argc) {
1130		ini_idx++;
1131		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1132		ini_file[ini_idx - 1] = strdup(argv[optind]);
1133		optind++;
1134	}
1135
1136	return ini_idx;
1137}
1138
1139static void free_shm(void)
1140{
1141	struct shmid_ds sbuf;
1142
1143	if (threads) {
1144		shmdt((void *) threads);
1145		threads = NULL;
1146		shmctl(shm_id, IPC_RMID, &sbuf);
1147	}
1148}
1149
1150/*
1151 * The thread area is shared between the main process and the job
1152 * threads/processes. So setup a shared memory segment that will hold
1153 * all the job info.
1154 */
1155static int setup_thread_area(void)
1156{
1157	/*
1158	 * 1024 is too much on some machines, scale max_jobs if
1159	 * we get a failure that looks like too large a shm segment
1160	 */
1161	do {
1162		size_t size = max_jobs * sizeof(struct thread_data);
1163
1164		shm_id = shmget(0, size, IPC_CREAT | 0600);
1165		if (shm_id != -1)
1166			break;
1167		if (errno != EINVAL) {
1168			perror("shmget");
1169			break;
1170		}
1171
1172		max_jobs >>= 1;
1173	} while (max_jobs);
1174
1175	if (shm_id == -1)
1176		return 1;
1177
1178	threads = shmat(shm_id, NULL, 0);
1179	if (threads == (void *) -1) {
1180		perror("shmat");
1181		return 1;
1182	}
1183
1184	atexit(free_shm);
1185	return 0;
1186}
1187
1188/*
1189 * Copy the fio options into the long options map, so we mirror
1190 * job and cmd line options.
1191 */
1192static void dupe_job_options(void)
1193{
1194	struct fio_option *o;
1195	unsigned int i;
1196
1197	i = 0;
1198	while (long_options[i].name)
1199		i++;
1200
1201	o = &options[0];
1202	while (o->name) {
1203		long_options[i].name = o->name;
1204		long_options[i].val = FIO_GETOPT_JOB;
1205		if (o->type == FIO_OPT_STR_SET)
1206			long_options[i].has_arg = no_argument;
1207		else
1208			long_options[i].has_arg = required_argument;
1209
1210		i++;
1211		o++;
1212		assert(i < FIO_JOB_OPTS + FIO_CMD_OPTS);
1213	}
1214}
1215
1216int parse_options(int argc, char *argv[])
1217{
1218	int job_files, i;
1219
1220	f_out = stdout;
1221	f_err = stderr;
1222
1223	dupe_job_options();
1224
1225	if (setup_thread_area())
1226		return 1;
1227	if (fill_def_thread())
1228		return 1;
1229
1230	job_files = parse_cmd_line(argc, argv);
1231
1232	for (i = 0; i < job_files; i++) {
1233		if (fill_def_thread())
1234			return 1;
1235		if (parse_jobs_ini(ini_file[i], i))
1236			return 1;
1237		free(ini_file[i]);
1238	}
1239
1240	free(ini_file);
1241
1242	if (!thread_number) {
1243		log_err("No jobs defined(s)\n");
1244		return 1;
1245	}
1246
1247	return 0;
1248}
1249