init.c revision 8914a9d83c67a2ead861ac997a1d4b06d02639bc 
1#include <stdio.h>
2#include <stdlib.h>
3#include <unistd.h>
4#include <fcntl.h>
5#include <ctype.h>
6#include <string.h>
7#include <errno.h>
8#include <sys/ipc.h>
9#include <sys/shm.h>
10#include <sys/types.h>
11#include <sys/stat.h>
12
13#include "fio.h"
14
15#define DEF_BS			(4096)
16#define DEF_TIMEOUT		(0)
17#define DEF_RATE_CYCLE		(1000)
18#define DEF_ODIRECT		(1)
19#define DEF_IO_ENGINE		(FIO_SYNCIO)
20#define DEF_IO_ENGINE_NAME	"sync"
21#define DEF_SEQUENTIAL		(1)
22#define DEF_RAND_REPEAT		(1)
23#define DEF_OVERWRITE		(1)
24#define DEF_CREATE		(1)
25#define DEF_INVALIDATE		(1)
26#define DEF_SYNCIO		(0)
27#define DEF_RANDSEED		(0xb1899bedUL)
28#define DEF_BWAVGTIME		(500)
29#define DEF_CREATE_SER		(1)
30#define DEF_CREATE_FSYNC	(1)
31#define DEF_LOOPS		(1)
32#define DEF_VERIFY		(0)
33#define DEF_STONEWALL		(0)
34#define DEF_NUMJOBS		(1)
35#define DEF_USE_THREAD		(0)
36#define DEF_FILE_SIZE		(1024 * 1024 * 1024UL)
37#define DEF_ZONE_SIZE		(0)
38#define DEF_ZONE_SKIP		(0)
39#define DEF_RWMIX_CYCLE		(500)
40#define DEF_RWMIX_READ		(50)
41#define DEF_NICE		(0)
42
43static char fio_version_string[] = "fio 1.4";
44
45static int repeatable = DEF_RAND_REPEAT;
46static char *ini_file;
47static int max_jobs = MAX_JOBS;
48
49struct thread_data def_thread;
50struct thread_data *threads = NULL;
51
52int rate_quit = 0;
53int write_lat_log = 0;
54int write_bw_log = 0;
55int exitall_on_terminate = 0;
56unsigned long long mlock_size = 0;
57
58static struct thread_data *get_new_job(int global, struct thread_data *parent)
59{
60	struct thread_data *td;
61
62	if (global)
63		return &def_thread;
64	if (thread_number >= max_jobs)
65		return NULL;
66
67	td = &threads[thread_number++];
68	if (parent)
69		*td = *parent;
70	else
71		memset(td, 0, sizeof(*td));
72
73	td->fd = -1;
74	td->thread_number = thread_number;
75
76	td->ddir = parent->ddir;
77	td->ioprio = parent->ioprio;
78	td->sequential = parent->sequential;
79	td->bs = parent->bs;
80	td->min_bs = parent->min_bs;
81	td->max_bs = parent->max_bs;
82	td->odirect = parent->odirect;
83	td->thinktime = parent->thinktime;
84	td->fsync_blocks = parent->fsync_blocks;
85	td->start_delay = parent->start_delay;
86	td->timeout = parent->timeout;
87	td->io_engine = parent->io_engine;
88	td->create_file = parent->create_file;
89	td->overwrite = parent->overwrite;
90	td->invalidate_cache = parent->invalidate_cache;
91	td->file_size = parent->file_size;
92	td->file_offset = parent->file_offset;
93	td->zone_size = parent->zone_size;
94	td->zone_skip = parent->zone_skip;
95	td->rate = parent->rate;
96	td->ratemin = parent->ratemin;
97	td->ratecycle = parent->ratecycle;
98	td->iodepth = parent->iodepth;
99	td->sync_io = parent->sync_io;
100	td->mem_type = parent->mem_type;
101	td->bw_avg_time = parent->bw_avg_time;
102	td->create_serialize = parent->create_serialize;
103	td->create_fsync = parent->create_fsync;
104	td->loops = parent->loops;
105	td->verify = parent->verify;
106	td->stonewall = parent->stonewall;
107	td->numjobs = parent->numjobs;
108	td->use_thread = parent->use_thread;
109	td->do_disk_util = parent->do_disk_util;
110	memcpy(&td->cpumask, &parent->cpumask, sizeof(td->cpumask));
111	strcpy(td->io_engine_name, parent->io_engine_name);
112
113	return td;
114}
115
116static void put_job(struct thread_data *td)
117{
118	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
119	thread_number--;
120}
121
122static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
123{
124	char *ddir_str[] = { "read", "write", "randread", "randwrite",
125			     "rw", NULL, "randrw" };
126	struct stat sb;
127	int numjobs, ddir;
128
129#ifndef FIO_HAVE_LIBAIO
130	if (td->io_engine == FIO_LIBAIO) {
131		fprintf(stderr, "Linux libaio not available\n");
132		return 1;
133	}
134#endif
135#ifndef FIO_HAVE_POSIXAIO
136	if (td->io_engine == FIO_POSIXAIO) {
137		fprintf(stderr, "posix aio not available\n");
138		return 1;
139	}
140#endif
141
142	/*
143	 * the def_thread is just for options, it's not a real job
144	 */
145	if (td == &def_thread)
146		return 0;
147
148	if (td->io_engine & FIO_SYNCIO)
149		td->iodepth = 1;
150	else {
151		if (!td->iodepth)
152			td->iodepth = 1;
153	}
154
155	/*
156	 * only really works for sequential io for now
157	 */
158	if (td->zone_size && !td->sequential)
159		td->zone_size = 0;
160
161	td->filetype = FIO_TYPE_FILE;
162	if (!stat(jobname, &sb)) {
163		if (S_ISBLK(sb.st_mode))
164			td->filetype = FIO_TYPE_BD;
165		else if (S_ISCHR(sb.st_mode))
166			td->filetype = FIO_TYPE_CHAR;
167	}
168
169	if (td->filetype == FIO_TYPE_FILE) {
170		if (td->directory && td->directory[0] != '\0')
171			sprintf(td->file_name, "%s/%s.%d", td->directory, jobname, td->jobnum);
172		else
173			sprintf(td->file_name, "%s.%d", jobname, td->jobnum);
174	} else
175		strncpy(td->file_name, jobname, sizeof(td->file_name) - 1);
176
177	sem_init(&td->mutex, 0, 0);
178
179	td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
180	td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
181	td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
182
183	if (td->min_bs == -1U)
184		td->min_bs = td->bs;
185	if (td->max_bs == -1U)
186		td->max_bs = td->bs;
187	if (td_read(td) && !td_rw(td))
188		td->verify = 0;
189
190	if (td->stonewall && td->thread_number > 1)
191		groupid++;
192
193	td->groupid = groupid;
194
195	if (setup_rate(td))
196		goto err;
197
198	if (write_lat_log) {
199		setup_log(&td->slat_log);
200		setup_log(&td->clat_log);
201	}
202	if (write_bw_log)
203		setup_log(&td->bw_log);
204
205	if (td->name[0] == '\0')
206		snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
207
208	ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
209
210	if (!job_add_num)
211		printf("%s: (g=%d): rw=%s, odir=%d, bs=%d-%d, rate=%d, ioengine=%s, iodepth=%d\n", td->name, td->groupid, ddir_str[ddir], td->odirect, td->min_bs, td->max_bs, td->rate, td->io_engine_name, td->iodepth);
212	else if (job_add_num == 1)
213		printf("...\n");
214
215	/*
216	 * recurse add identical jobs, clear numjobs and stonewall options
217	 * as they don't apply to sub-jobs
218	 */
219	numjobs = td->numjobs;
220	while (--numjobs) {
221		struct thread_data *td_new = get_new_job(0, td);
222
223		if (!td_new)
224			goto err;
225
226		td_new->numjobs = 1;
227		td_new->stonewall = 0;
228		td_new->jobnum = numjobs;
229		job_add_num = numjobs - 1;
230
231		if (add_job(td_new, jobname, job_add_num))
232			goto err;
233	}
234	return 0;
235err:
236	put_job(td);
237	return -1;
238}
239
240int init_random_state(struct thread_data *td)
241{
242	unsigned long seeds[4];
243	int fd, num_maps, blocks;
244
245	fd = open("/dev/urandom", O_RDONLY);
246	if (fd == -1) {
247		td_verror(td, errno);
248		return 1;
249	}
250
251	if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
252		td_verror(td, EIO);
253		close(fd);
254		return 1;
255	}
256
257	close(fd);
258
259	srand48_r(seeds[0], &td->bsrange_state);
260	srand48_r(seeds[1], &td->verify_state);
261	srand48_r(seeds[2], &td->rwmix_state);
262
263	if (td->sequential)
264		return 0;
265
266	if (repeatable)
267		seeds[3] = DEF_RANDSEED;
268
269	blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
270	num_maps = blocks / BLOCKS_PER_MAP;
271	td->file_map = malloc(num_maps * sizeof(long));
272	td->num_maps = num_maps;
273	memset(td->file_map, 0, num_maps * sizeof(long));
274
275	srand48_r(seeds[3], &td->random_state);
276	return 0;
277}
278
279static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
280{
281#ifdef FIO_HAVE_CPU_AFFINITY
282	unsigned int i;
283
284	CPU_ZERO(&cpumask);
285
286	for (i = 0; i < sizeof(int) * 8; i++) {
287		if ((1 << i) & cpu)
288			CPU_SET(i, &cpumask);
289	}
290#endif
291}
292
293static unsigned long get_mult(char c)
294{
295	switch (c) {
296		case 'k':
297		case 'K':
298			return 1024;
299		case 'm':
300		case 'M':
301			return 1024 * 1024;
302		case 'g':
303		case 'G':
304			return 1024 * 1024 * 1024;
305		default:
306			return 1;
307	}
308}
309
310/*
311 * convert string after '=' into decimal value, noting any size suffix
312 */
313static int str_cnv(char *p, unsigned long long *val)
314{
315	char *str;
316	int len;
317
318	str = strchr(p, '=');
319	if (!str)
320		return 1;
321
322	str++;
323	len = strlen(str);
324
325	*val = strtoul(str, NULL, 10);
326	if (*val == ULONG_MAX && errno == ERANGE)
327		return 1;
328
329	*val *= get_mult(str[len - 1]);
330	return 0;
331}
332
333static int check_strcnv(char *p, char *name, unsigned long long *val)
334{
335	if (strncmp(p, name, strlen(name) - 1))
336		return 1;
337
338	return str_cnv(p, val);
339}
340
341static void strip_blank_front(char **p)
342{
343	char *s = *p;
344
345	while (isspace(*s))
346		s++;
347}
348
349static void strip_blank_end(char *p)
350{
351	char *s = p + strlen(p) - 1;
352
353	while (isspace(*s) || iscntrl(*s))
354		s--;
355
356	*(s + 1) = '\0';
357}
358
359typedef int (str_cb_fn)(struct thread_data *, char *);
360
361static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
362{
363	char *s;
364
365	if (strncmp(p, name, strlen(name)))
366		return 1;
367
368	s = strstr(p, name);
369	if (!s)
370		return 1;
371
372	s = strchr(s, '=');
373	if (!s)
374		return 1;
375
376	s++;
377	strip_blank_front(&s);
378	return cb(td, s);
379}
380
381static int check_strstore(char *p, char *name, char *dest)
382{
383	char *s;
384
385	if (strncmp(p, name, strlen(name)))
386		return 1;
387
388	s = strstr(p, name);
389	if (!s)
390		return 1;
391
392	s = strchr(p, '=');
393	if (!s)
394		return 1;
395
396	s++;
397	strip_blank_front(&s);
398
399	strcpy(dest, s);
400	return 0;
401}
402
403static int __check_range(char *str, unsigned long *val)
404{
405	char suffix;
406
407	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
408		*val *= get_mult(suffix);
409		return 0;
410	}
411
412	if (sscanf(str, "%lu", val) == 1)
413		return 0;
414
415	return 1;
416}
417
418static int check_range(char *p, char *name, unsigned long *s, unsigned long *e)
419{
420	char option[128];
421	char *str, *p1, *p2;
422
423	if (strncmp(p, name, strlen(name)))
424		return 1;
425
426	strcpy(option, p);
427	p = option;
428
429	str = strstr(p, name);
430	if (!str)
431		return 1;
432
433	p += strlen(name);
434
435	str = strchr(p, '=');
436	if (!str)
437		return 1;
438
439	/*
440	 * 'p' now holds whatever is after the '=' sign
441	 */
442	p1 = str + 1;
443
444	/*
445	 * terminate p1 at the '-' sign
446	 */
447	p = strchr(p1, '-');
448	if (!p)
449		return 1;
450
451	p2 = p + 1;
452	*p = '\0';
453
454	if (!__check_range(p1, s) && !__check_range(p2, e))
455		return 0;
456
457	return 1;
458}
459
460static int check_int(char *p, char *name, unsigned int *val)
461{
462	char *str;
463
464	if (strncmp(p, name, strlen(name)))
465		return 1;
466
467	str = strstr(p, name);
468	if (!str)
469		return 1;
470
471	str = strchr(p, '=');
472	if (!str)
473		return 1;
474
475	str++;
476
477	if (sscanf(str, "%u", val) == 1)
478		return 0;
479
480	return 1;
481}
482
483static int check_strset(char *p, char *name)
484{
485	return strncmp(p, name, strlen(name));
486}
487
488static int is_empty_or_comment(char *line)
489{
490	unsigned int i;
491
492	for (i = 0; i < strlen(line); i++) {
493		if (line[i] == ';')
494			return 1;
495		if (!isspace(line[i]) && !iscntrl(line[i]))
496			return 0;
497	}
498
499	return 1;
500}
501
502static int str_rw_cb(struct thread_data *td, char *mem)
503{
504	if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
505		td->ddir = DDIR_READ;
506		td->sequential = 1;
507		return 0;
508	} else if (!strncmp(mem, "randread", 8)) {
509		td->ddir = DDIR_READ;
510		td->sequential = 0;
511		return 0;
512	} else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
513		td->ddir = DDIR_WRITE;
514		td->sequential = 1;
515		return 0;
516	} else if (!strncmp(mem, "randwrite", 9)) {
517		td->ddir = DDIR_WRITE;
518		td->sequential = 0;
519		return 0;
520	} else if (!strncmp(mem, "rw", 2)) {
521		td->ddir = 0;
522		td->iomix = 1;
523		td->sequential = 1;
524		return 0;
525	} else if (!strncmp(mem, "randrw", 6)) {
526		td->ddir = 0;
527		td->iomix = 1;
528		td->sequential = 0;
529		return 0;
530	}
531
532	fprintf(stderr, "fio: data direction: read, write, randread, randwrite, rw, randrw\n");
533	return 1;
534}
535
536static int str_verify_cb(struct thread_data *td, char *mem)
537{
538	if (!strncmp(mem, "0", 1)) {
539		td->verify = VERIFY_NONE;
540		return 0;
541	} else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
542		td->verify = VERIFY_MD5;
543		return 0;
544	} else if (!strncmp(mem, "crc32", 5)) {
545		td->verify = VERIFY_CRC32;
546		return 0;
547	}
548
549	fprintf(stderr, "fio: verify types: md5, crc32\n");
550	return 1;
551}
552
553static int str_mem_cb(struct thread_data *td, char *mem)
554{
555	if (!strncmp(mem, "malloc", 6)) {
556		td->mem_type = MEM_MALLOC;
557		return 0;
558	} else if (!strncmp(mem, "shm", 3)) {
559		td->mem_type = MEM_SHM;
560		return 0;
561	} else if (!strncmp(mem, "mmap", 4)) {
562		td->mem_type = MEM_MMAP;
563		return 0;
564	}
565
566	fprintf(stderr, "fio: mem type: malloc, shm, mmap\n");
567	return 1;
568}
569
570static int str_ioengine_cb(struct thread_data *td, char *str)
571{
572	if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
573	    !strncmp(str, "libaio", 6)) {
574		strcpy(td->io_engine_name, "libaio");
575		td->io_engine = FIO_LIBAIO;
576		return 0;
577	} else if (!strncmp(str, "posixaio", 8)) {
578		strcpy(td->io_engine_name, "posixaio");
579		td->io_engine = FIO_POSIXAIO;
580		return 0;
581	} else if (!strncmp(str, "sync", 4)) {
582		strcpy(td->io_engine_name, "sync");
583		td->io_engine = FIO_SYNCIO;
584		return 0;
585	} else if (!strncmp(str, "mmap", 4)) {
586		strcpy(td->io_engine_name, "mmap");
587		td->io_engine = FIO_MMAPIO;
588		return 0;
589	} else if (!strncmp(str, "sgio", 4)) {
590		strcpy(td->io_engine_name, "sgio");
591		td->io_engine = FIO_SGIO;
592		return 0;
593	} else if (!strncmp(str, "splice", 6)) {
594		strcpy(td->io_engine_name, "splice");
595		td->io_engine = FIO_SPLICEIO;
596		return 0;
597	}
598
599	fprintf(stderr, "fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice\n");
600	return 1;
601}
602
603/*
604 * This is our [ini] type file parser.
605 */
606int parse_jobs_ini(char *file)
607{
608	unsigned int prioclass, prio, cpu, global, il;
609	unsigned long long ull;
610	unsigned long ul1, ul2;
611	struct thread_data *td;
612	char *string, *name, *tmpbuf;
613	fpos_t off;
614	FILE *f;
615	char *p;
616	int ret = 0;
617
618	f = fopen(file, "r");
619	if (!f) {
620		perror("fopen job file");
621		return 1;
622	}
623
624	string = malloc(4096);
625	name = malloc(256);
626	tmpbuf = malloc(4096);
627
628	while ((p = fgets(string, 4096, f)) != NULL) {
629		if (ret)
630			break;
631		if (is_empty_or_comment(p))
632			continue;
633		if (sscanf(p, "[%s]", name) != 1)
634			continue;
635
636		global = !strncmp(name, "global", 6);
637
638		name[strlen(name) - 1] = '\0';
639
640		td = get_new_job(global, &def_thread);
641		if (!td) {
642			ret = 1;
643			break;
644		}
645
646		fgetpos(f, &off);
647		while ((p = fgets(string, 4096, f)) != NULL) {
648			if (is_empty_or_comment(p))
649				continue;
650			if (strstr(p, "["))
651				break;
652			strip_blank_front(&p);
653			strip_blank_end(p);
654
655			if (!check_int(p, "prio", &prio)) {
656#ifndef FIO_HAVE_IOPRIO
657				fprintf(stderr, "io priorities not available\n");
658				ret = 1;
659				break;
660#endif
661				td->ioprio |= prio;
662				fgetpos(f, &off);
663				continue;
664			}
665			if (!check_int(p, "prioclass", &prioclass)) {
666#ifndef FIO_HAVE_IOPRIO
667				fprintf(stderr, "io priorities not available\n");
668				ret = 1;
669				break;
670#endif
671				td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
672				fgetpos(f, &off);
673				continue;
674			}
675			if (!check_int(p, "direct", &td->odirect)) {
676				fgetpos(f, &off);
677				continue;
678			}
679			if (!check_int(p, "rate", &td->rate)) {
680				fgetpos(f, &off);
681				continue;
682			}
683			if (!check_int(p, "ratemin", &td->ratemin)) {
684				fgetpos(f, &off);
685				continue;
686			}
687			if (!check_int(p, "ratecycle", &td->ratecycle)) {
688				fgetpos(f, &off);
689				continue;
690			}
691			if (!check_int(p, "thinktime", &td->thinktime)) {
692				fgetpos(f, &off);
693				continue;
694			}
695			if (!check_int(p, "cpumask", &cpu)) {
696#ifndef FIO_HAVE_CPU_AFFINITY
697				fprintf(stderr, "cpu affinity not available\n");
698				ret = 1;
699				break;
700#endif
701				fill_cpu_mask(td->cpumask, cpu);
702				fgetpos(f, &off);
703				continue;
704			}
705			if (!check_int(p, "fsync", &td->fsync_blocks)) {
706				fgetpos(f, &off);
707				td->end_fsync = 1;
708				continue;
709			}
710			if (!check_int(p, "startdelay", &td->start_delay)) {
711				fgetpos(f, &off);
712				continue;
713			}
714			if (!check_int(p, "timeout", &td->timeout)) {
715				fgetpos(f, &off);
716				continue;
717			}
718			if (!check_int(p, "invalidate",&td->invalidate_cache)) {
719				fgetpos(f, &off);
720				continue;
721			}
722			if (!check_int(p, "iodepth", &td->iodepth)) {
723				fgetpos(f, &off);
724				continue;
725			}
726			if (!check_int(p, "sync", &td->sync_io)) {
727				fgetpos(f, &off);
728				continue;
729			}
730			if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
731				fgetpos(f, &off);
732				continue;
733			}
734			if (!check_int(p, "create_serialize", &td->create_serialize)) {
735				fgetpos(f, &off);
736				continue;
737			}
738			if (!check_int(p, "create_fsync", &td->create_fsync)) {
739				fgetpos(f, &off);
740				continue;
741			}
742			if (!check_int(p, "end_fsync", &td->end_fsync)) {
743				fgetpos(f, &off);
744				continue;
745			}
746			if (!check_int(p, "loops", &td->loops)) {
747				fgetpos(f, &off);
748				continue;
749			}
750			if (!check_int(p, "numjobs", &td->numjobs)) {
751				fgetpos(f, &off);
752				continue;
753			}
754			if (!check_int(p, "overwrite", &td->overwrite)) {
755				fgetpos(f, &off);
756				continue;
757			}
758			if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
759				fgetpos(f, &off);
760				continue;
761			}
762			if (!check_int(p, "rwmixread", &il)) {
763				if (il > 100)
764					il = 100;
765				td->rwmixread = il;
766				fgetpos(f, &off);
767				continue;
768			}
769			if (!check_int(p, "rwmixwrite", &il)) {
770				if (il > 100)
771					il = 100;
772				td->rwmixread = 100 - il;
773				fgetpos(f, &off);
774				continue;
775			}
776			if (!check_int(p, "nice", &td->nice)) {
777				fgetpos(f, &off);
778				continue;
779			}
780			if (!check_range(p, "bsrange", &ul1, &ul2)) {
781				if (ul1 > ul2) {
782					td->max_bs = ul1;
783					td->min_bs = ul2;
784				} else {
785					td->max_bs = ul2;
786					td->min_bs = ul1;
787				}
788				fgetpos(f, &off);
789				continue;
790			}
791			if (!check_strcnv(p, "bs", &ull)) {
792				td->bs = ull;
793				fgetpos(f, &off);
794				continue;
795			}
796			if (!check_strcnv(p, "size", &td->file_size)) {
797				fgetpos(f, &off);
798				continue;
799			}
800			if (!check_strcnv(p, "offset", &td->file_offset)) {
801				fgetpos(f, &off);
802				continue;
803			}
804			if (!check_strcnv(p, "zonesize", &td->zone_size)) {
805				fgetpos(f, &off);
806				continue;
807			}
808			if (!check_strcnv(p, "zoneskip", &td->zone_skip)) {
809				fgetpos(f, &off);
810				continue;
811			}
812			if (!check_strcnv(p, "lockmem", &mlock_size)) {
813				fgetpos(f, &off);
814				continue;
815			}
816			if (!check_strstore(p, "directory", tmpbuf)) {
817				td->directory = strdup(tmpbuf);
818				fgetpos(f, &off);
819				continue;
820			}
821			if (!check_strstore(p, "name", tmpbuf)) {
822				snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
823				fgetpos(f, &off);
824				continue;
825			}
826			if (!check_str(p, "mem", str_mem_cb, td)) {
827				fgetpos(f, &off);
828				continue;
829			}
830			if (!check_str(p, "verify", str_verify_cb, td)) {
831				fgetpos(f, &off);
832				continue;
833			}
834			if (!check_str(p, "rw", str_rw_cb, td)) {
835				fgetpos(f, &off);
836				continue;
837			}
838			if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
839				fgetpos(f, &off);
840				continue;
841			}
842			if (!check_strset(p, "create")) {
843				td->create_file = 1;
844				fgetpos(f, &off);
845				continue;
846			}
847			if (!check_strset(p, "exitall")) {
848				exitall_on_terminate = 1;
849				fgetpos(f, &off);
850				continue;
851			}
852			if (!check_strset(p, "stonewall")) {
853				td->stonewall = 1;
854				fgetpos(f, &off);
855				continue;
856			}
857			if (!check_strset(p, "thread")) {
858				td->use_thread = 1;
859				fgetpos(f, &off);
860				continue;
861			}
862			if (!check_strstore(p, "iolog", tmpbuf)) {
863				td->iolog_file = strdup(tmpbuf);
864				td->read_iolog = 1;
865				td->write_iolog = 0;
866				fgetpos(f, &off);
867				continue;
868			}
869			if (!td->read_iolog &&
870			    !check_strstore(p, "write_iolog", tmpbuf)) {
871				td->iolog_file = strdup(tmpbuf);
872				td->write_iolog = 1;
873				fgetpos(f, &off);
874				continue;
875			}
876			if (!check_strstore(p, "exec_prerun", tmpbuf)) {
877				td->exec_prerun = strdup(tmpbuf);
878				fgetpos(f, &off);
879				continue;
880			}
881			if (!check_strstore(p, "exec_postrun", tmpbuf)) {
882				td->exec_postrun = strdup(tmpbuf);
883				fgetpos(f, &off);
884				continue;
885			}
886			if (!check_strstore(p, "ioscheduler", tmpbuf)) {
887				td->ioscheduler = strdup(tmpbuf);
888				fgetpos(f, &off);
889				continue;
890			}
891
892			/*
893			 * Don't break here, continue parsing options so we
894			 * dump all the bad ones. Makes trial/error fixups
895			 * easier on the user.
896			 */
897			printf("Client%d: bad option %s\n",td->thread_number,p);
898			ret = 1;
899		}
900
901		if (!ret) {
902			fsetpos(f, &off);
903			ret = add_job(td, name, 0);
904		}
905		if (ret)
906			break;
907	}
908
909	free(string);
910	free(name);
911	free(tmpbuf);
912	fclose(f);
913	return ret;
914}
915
916static int fill_def_thread(void)
917{
918	memset(&def_thread, 0, sizeof(def_thread));
919
920	if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
921		perror("sched_getaffinity");
922		return 1;
923	}
924
925	/*
926	 * fill globals
927	 */
928	def_thread.ddir = DDIR_READ;
929	def_thread.iomix = 0;
930	def_thread.bs = DEF_BS;
931	def_thread.min_bs = -1;
932	def_thread.max_bs = -1;
933	def_thread.io_engine = DEF_IO_ENGINE;
934	strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
935	def_thread.odirect = DEF_ODIRECT;
936	def_thread.ratecycle = DEF_RATE_CYCLE;
937	def_thread.sequential = DEF_SEQUENTIAL;
938	def_thread.timeout = DEF_TIMEOUT;
939	def_thread.create_file = DEF_CREATE;
940	def_thread.overwrite = DEF_OVERWRITE;
941	def_thread.invalidate_cache = DEF_INVALIDATE;
942	def_thread.sync_io = DEF_SYNCIO;
943	def_thread.mem_type = MEM_MALLOC;
944	def_thread.bw_avg_time = DEF_BWAVGTIME;
945	def_thread.create_serialize = DEF_CREATE_SER;
946	def_thread.create_fsync = DEF_CREATE_FSYNC;
947	def_thread.loops = DEF_LOOPS;
948	def_thread.verify = DEF_VERIFY;
949	def_thread.stonewall = DEF_STONEWALL;
950	def_thread.numjobs = DEF_NUMJOBS;
951	def_thread.use_thread = DEF_USE_THREAD;
952	def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
953	def_thread.rwmixread = DEF_RWMIX_READ;
954	def_thread.nice = DEF_NICE;
955#ifdef FIO_HAVE_DISK_UTIL
956	def_thread.do_disk_util = 1;
957#endif
958
959	return 0;
960}
961
962static void usage(char *name)
963{
964	printf("%s\n", fio_version_string);
965	printf("\t-s IO is sequential\n");
966	printf("\t-b Block size in KiB for each IO\n");
967	printf("\t-t Runtime in seconds\n");
968	printf("\t-R Exit all threads on failure to meet rate goal\n");
969	printf("\t-o Use O_DIRECT\n");
970	printf("\t-l Generate per-job latency logs\n");
971	printf("\t-w Generate per-job bandwidth logs\n");
972	printf("\t-f Job file (Required)\n");
973	printf("\t-v Print version info and exit\n");
974}
975
976static void parse_cmd_line(int argc, char *argv[])
977{
978	int c;
979
980	while ((c = getopt(argc, argv, "s:b:t:r:R:o:f:lwvh")) != EOF) {
981		switch (c) {
982			case 's':
983				def_thread.sequential = !!atoi(optarg);
984				break;
985			case 'b':
986				def_thread.bs = atoi(optarg);
987				def_thread.bs <<= 10;
988				if (!def_thread.bs) {
989					printf("bad block size\n");
990					def_thread.bs = DEF_BS;
991				}
992				break;
993			case 't':
994				def_thread.timeout = atoi(optarg);
995				break;
996			case 'r':
997				repeatable = !!atoi(optarg);
998				break;
999			case 'R':
1000				rate_quit = !!atoi(optarg);
1001				break;
1002			case 'o':
1003				def_thread.odirect = !!atoi(optarg);
1004				break;
1005			case 'f':
1006				ini_file = strdup(optarg);
1007				break;
1008			case 'l':
1009				write_lat_log = 1;
1010				break;
1011			case 'w':
1012				write_bw_log = 1;
1013				break;
1014			case 'h':
1015				usage(argv[0]);
1016				exit(0);
1017			case 'v':
1018				printf("%s\n", fio_version_string);
1019				exit(0);
1020		}
1021	}
1022
1023	if (!ini_file && argc > 1 && argv[argc - 1][0] != '-')
1024		ini_file = strdup(argv[argc - 1]);
1025}
1026
1027static void free_shm(void)
1028{
1029	struct shmid_ds sbuf;
1030
1031	if (threads) {
1032		shmdt(threads);
1033		threads = NULL;
1034		shmctl(shm_id, IPC_RMID, &sbuf);
1035	}
1036}
1037
1038static int setup_thread_area(void)
1039{
1040	/*
1041	 * 1024 is too much on some machines, scale max_jobs if
1042	 * we get a failure that looks like too large a shm segment
1043	 */
1044	do {
1045		int s = max_jobs * sizeof(struct thread_data);
1046
1047		shm_id = shmget(0, s, IPC_CREAT | 0600);
1048		if (shm_id != -1)
1049			break;
1050		if (errno != EINVAL) {
1051			perror("shmget");
1052			break;
1053		}
1054
1055		max_jobs >>= 1;
1056	} while (max_jobs);
1057
1058	if (shm_id == -1)
1059		return 1;
1060
1061	threads = shmat(shm_id, NULL, 0);
1062	if (threads == (void *) -1) {
1063		perror("shmat");
1064		return 1;
1065	}
1066
1067	atexit(free_shm);
1068	return 0;
1069}
1070
1071int parse_options(int argc, char *argv[])
1072{
1073	if (setup_thread_area())
1074		return 1;
1075	if (fill_def_thread())
1076		return 1;
1077
1078	parse_cmd_line(argc, argv);
1079
1080	if (!ini_file) {
1081		printf("Need job file\n");
1082		usage(argv[0]);
1083		return 1;
1084	}
1085
1086	if (parse_jobs_ini(ini_file))
1087		return 1;
1088
1089	return 0;
1090}
1091