init.c revision 072619835aa805f3335dca9d72f4d4eb1009aecd 
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 int setup_rate(struct thread_data *td)
59{
60	int nr_reads_per_sec;
61
62	if (!td->rate)
63		return 0;
64
65	if (td->rate < td->ratemin) {
66		fprintf(stderr, "min rate larger than nominal rate\n");
67		return -1;
68	}
69
70	nr_reads_per_sec = (td->rate * 1024) / td->min_bs;
71	td->rate_usec_cycle = 1000000 / nr_reads_per_sec;
72	td->rate_pending_usleep = 0;
73	return 0;
74}
75
76static void setup_log(struct io_log **log)
77{
78	struct io_log *l = malloc(sizeof(*l));
79
80	l->nr_samples = 0;
81	l->max_samples = 1024;
82	l->log = malloc(l->max_samples * sizeof(struct io_sample));
83	*log = l;
84}
85
86void finish_log(struct thread_data *td, struct io_log *log, const char *name)
87{
88	char file_name[256];
89	FILE *f;
90	unsigned int i;
91
92	snprintf(file_name, 200, "client%d_%s.log", td->thread_number, name);
93	f = fopen(file_name, "w");
94	if (!f) {
95		perror("fopen log");
96		return;
97	}
98
99	for (i = 0; i < log->nr_samples; i++)
100		fprintf(f, "%lu, %lu, %u\n", log->log[i].time, log->log[i].val, log->log[i].ddir);
101
102	fclose(f);
103	free(log->log);
104	free(log);
105}
106
107static struct thread_data *get_new_job(int global, struct thread_data *parent)
108{
109	struct thread_data *td;
110
111	if (global)
112		return &def_thread;
113	if (thread_number >= max_jobs)
114		return NULL;
115
116	td = &threads[thread_number++];
117	if (parent)
118		*td = *parent;
119	else
120		memset(td, 0, sizeof(*td));
121
122	td->fd = -1;
123	td->thread_number = thread_number;
124
125	td->ddir = parent->ddir;
126	td->ioprio = parent->ioprio;
127	td->sequential = parent->sequential;
128	td->bs = parent->bs;
129	td->min_bs = parent->min_bs;
130	td->max_bs = parent->max_bs;
131	td->odirect = parent->odirect;
132	td->thinktime = parent->thinktime;
133	td->fsync_blocks = parent->fsync_blocks;
134	td->start_delay = parent->start_delay;
135	td->timeout = parent->timeout;
136	td->io_engine = parent->io_engine;
137	td->create_file = parent->create_file;
138	td->overwrite = parent->overwrite;
139	td->invalidate_cache = parent->invalidate_cache;
140	td->file_size = parent->file_size;
141	td->file_offset = parent->file_offset;
142	td->zone_size = parent->zone_size;
143	td->zone_skip = parent->zone_skip;
144	td->rate = parent->rate;
145	td->ratemin = parent->ratemin;
146	td->ratecycle = parent->ratecycle;
147	td->iodepth = parent->iodepth;
148	td->sync_io = parent->sync_io;
149	td->mem_type = parent->mem_type;
150	td->bw_avg_time = parent->bw_avg_time;
151	td->create_serialize = parent->create_serialize;
152	td->create_fsync = parent->create_fsync;
153	td->loops = parent->loops;
154	td->verify = parent->verify;
155	td->stonewall = parent->stonewall;
156	td->numjobs = parent->numjobs;
157	td->use_thread = parent->use_thread;
158	td->do_disk_util = parent->do_disk_util;
159	memcpy(&td->cpumask, &parent->cpumask, sizeof(td->cpumask));
160	strcpy(td->io_engine_name, parent->io_engine_name);
161
162	return td;
163}
164
165static void put_job(struct thread_data *td)
166{
167	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
168	thread_number--;
169}
170
171static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
172{
173	char *ddir_str[] = { "read", "write", "randread", "randwrite",
174			     "rw", NULL, "randrw" };
175	struct stat sb;
176	int numjobs, ddir;
177
178#ifndef FIO_HAVE_LIBAIO
179	if (td->io_engine == FIO_LIBAIO) {
180		fprintf(stderr, "Linux libaio not available\n");
181		return 1;
182	}
183#endif
184#ifndef FIO_HAVE_POSIXAIO
185	if (td->io_engine == FIO_POSIXAIO) {
186		fprintf(stderr, "posix aio not available\n");
187		return 1;
188	}
189#endif
190
191	/*
192	 * the def_thread is just for options, it's not a real job
193	 */
194	if (td == &def_thread)
195		return 0;
196
197	if (td->io_engine & FIO_SYNCIO)
198		td->iodepth = 1;
199	else {
200		if (!td->iodepth)
201			td->iodepth = 1;
202	}
203
204	/*
205	 * only really works for sequential io for now
206	 */
207	if (td->zone_size && !td->sequential)
208		td->zone_size = 0;
209
210	td->filetype = FIO_TYPE_FILE;
211	if (!stat(jobname, &sb)) {
212		if (S_ISBLK(sb.st_mode))
213			td->filetype = FIO_TYPE_BD;
214		else if (S_ISCHR(sb.st_mode))
215			td->filetype = FIO_TYPE_CHAR;
216	}
217
218	if (td->filetype == FIO_TYPE_FILE) {
219		if (td->directory && td->directory[0] != '\0')
220			sprintf(td->file_name, "%s/%s.%d", td->directory, jobname, td->jobnum);
221		else
222			sprintf(td->file_name, "%s.%d", jobname, td->jobnum);
223	} else
224		strncpy(td->file_name, jobname, sizeof(td->file_name) - 1);
225
226	sem_init(&td->mutex, 0, 0);
227
228	td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
229	td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
230	td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
231
232	if (td->min_bs == -1U)
233		td->min_bs = td->bs;
234	if (td->max_bs == -1U)
235		td->max_bs = td->bs;
236	if (td_read(td) && !td_rw(td))
237		td->verify = 0;
238
239	if (td->stonewall && td->thread_number > 1)
240		groupid++;
241
242	td->groupid = groupid;
243
244	if (setup_rate(td))
245		goto err;
246
247	if (write_lat_log) {
248		setup_log(&td->slat_log);
249		setup_log(&td->clat_log);
250	}
251	if (write_bw_log)
252		setup_log(&td->bw_log);
253
254	if (td->name[0] == '\0')
255		snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
256
257	ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
258
259	if (!job_add_num)
260		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);
261	else if (job_add_num == 1)
262		printf("...\n");
263
264	/*
265	 * recurse add identical jobs, clear numjobs and stonewall options
266	 * as they don't apply to sub-jobs
267	 */
268	numjobs = td->numjobs;
269	while (--numjobs) {
270		struct thread_data *td_new = get_new_job(0, td);
271
272		if (!td_new)
273			goto err;
274
275		td_new->numjobs = 1;
276		td_new->stonewall = 0;
277		td_new->jobnum = numjobs;
278		job_add_num = numjobs - 1;
279
280		if (add_job(td_new, jobname, job_add_num))
281			goto err;
282	}
283	return 0;
284err:
285	put_job(td);
286	return -1;
287}
288
289int init_random_state(struct thread_data *td)
290{
291	unsigned long seeds[4];
292	int fd, num_maps, blocks;
293
294	fd = open("/dev/urandom", O_RDONLY);
295	if (fd == -1) {
296		td_verror(td, errno);
297		return 1;
298	}
299
300	if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
301		td_verror(td, EIO);
302		close(fd);
303		return 1;
304	}
305
306	close(fd);
307
308	srand48_r(seeds[0], &td->bsrange_state);
309	srand48_r(seeds[1], &td->verify_state);
310	srand48_r(seeds[2], &td->rwmix_state);
311
312	if (td->sequential)
313		return 0;
314
315	if (repeatable)
316		seeds[3] = DEF_RANDSEED;
317
318	blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
319	num_maps = blocks / BLOCKS_PER_MAP;
320	td->file_map = malloc(num_maps * sizeof(long));
321	td->num_maps = num_maps;
322	memset(td->file_map, 0, num_maps * sizeof(long));
323
324	srand48_r(seeds[3], &td->random_state);
325	return 0;
326}
327
328static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
329{
330#ifdef FIO_HAVE_CPU_AFFINITY
331	unsigned int i;
332
333	CPU_ZERO(&cpumask);
334
335	for (i = 0; i < sizeof(int) * 8; i++) {
336		if ((1 << i) & cpu)
337			CPU_SET(i, &cpumask);
338	}
339#endif
340}
341
342static unsigned long get_mult(char c)
343{
344	switch (c) {
345		case 'k':
346		case 'K':
347			return 1024;
348		case 'm':
349		case 'M':
350			return 1024 * 1024;
351		case 'g':
352		case 'G':
353			return 1024 * 1024 * 1024;
354		default:
355			return 1;
356	}
357}
358
359/*
360 * convert string after '=' into decimal value, noting any size suffix
361 */
362static int str_cnv(char *p, unsigned long long *val)
363{
364	char *str;
365	int len;
366
367	str = strchr(p, '=');
368	if (!str)
369		return 1;
370
371	str++;
372	len = strlen(str);
373
374	*val = strtoul(str, NULL, 10);
375	if (*val == ULONG_MAX && errno == ERANGE)
376		return 1;
377
378	*val *= get_mult(str[len - 1]);
379	return 0;
380}
381
382static int check_strcnv(char *p, char *name, unsigned long long *val)
383{
384	if (strncmp(p, name, strlen(name) - 1))
385		return 1;
386
387	return str_cnv(p, val);
388}
389
390static void strip_blank_front(char **p)
391{
392	char *s = *p;
393
394	while (isspace(*s))
395		s++;
396}
397
398static void strip_blank_end(char *p)
399{
400	char *s = p + strlen(p) - 1;
401
402	while (isspace(*s) || iscntrl(*s))
403		s--;
404
405	*(s + 1) = '\0';
406}
407
408typedef int (str_cb_fn)(struct thread_data *, char *);
409
410static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
411{
412	char *s;
413
414	if (strncmp(p, name, strlen(name)))
415		return 1;
416
417	s = strstr(p, name);
418	if (!s)
419		return 1;
420
421	s = strchr(s, '=');
422	if (!s)
423		return 1;
424
425	s++;
426	strip_blank_front(&s);
427	return cb(td, s);
428}
429
430static int check_strstore(char *p, char *name, char *dest)
431{
432	char *s;
433
434	if (strncmp(p, name, strlen(name)))
435		return 1;
436
437	s = strstr(p, name);
438	if (!s)
439		return 1;
440
441	s = strchr(p, '=');
442	if (!s)
443		return 1;
444
445	s++;
446	strip_blank_front(&s);
447
448	strcpy(dest, s);
449	return 0;
450}
451
452static int __check_range(char *str, unsigned long *val)
453{
454	char suffix;
455
456	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
457		*val *= get_mult(suffix);
458		return 0;
459	}
460
461	if (sscanf(str, "%lu", val) == 1)
462		return 0;
463
464	return 1;
465}
466
467static int check_range(char *p, char *name, unsigned long *s, unsigned long *e)
468{
469	char option[128];
470	char *str, *p1, *p2;
471
472	if (strncmp(p, name, strlen(name)))
473		return 1;
474
475	strcpy(option, p);
476	p = option;
477
478	str = strstr(p, name);
479	if (!str)
480		return 1;
481
482	p += strlen(name);
483
484	str = strchr(p, '=');
485	if (!str)
486		return 1;
487
488	/*
489	 * 'p' now holds whatever is after the '=' sign
490	 */
491	p1 = str + 1;
492
493	/*
494	 * terminate p1 at the '-' sign
495	 */
496	p = strchr(p1, '-');
497	if (!p)
498		return 1;
499
500	p2 = p + 1;
501	*p = '\0';
502
503	if (!__check_range(p1, s) && !__check_range(p2, e))
504		return 0;
505
506	return 1;
507}
508
509static int check_int(char *p, char *name, unsigned int *val)
510{
511	char *str;
512
513	if (strncmp(p, name, strlen(name)))
514		return 1;
515
516	str = strstr(p, name);
517	if (!str)
518		return 1;
519
520	str = strchr(p, '=');
521	if (!str)
522		return 1;
523
524	str++;
525
526	if (sscanf(str, "%u", val) == 1)
527		return 0;
528
529	return 1;
530}
531
532static int check_strset(char *p, char *name)
533{
534	return strncmp(p, name, strlen(name));
535}
536
537static int is_empty_or_comment(char *line)
538{
539	unsigned int i;
540
541	for (i = 0; i < strlen(line); i++) {
542		if (line[i] == ';')
543			return 1;
544		if (!isspace(line[i]) && !iscntrl(line[i]))
545			return 0;
546	}
547
548	return 1;
549}
550
551static int str_rw_cb(struct thread_data *td, char *mem)
552{
553	if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
554		td->ddir = DDIR_READ;
555		td->sequential = 1;
556		return 0;
557	} else if (!strncmp(mem, "randread", 8)) {
558		td->ddir = DDIR_READ;
559		td->sequential = 0;
560		return 0;
561	} else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
562		td->ddir = DDIR_WRITE;
563		td->sequential = 1;
564		return 0;
565	} else if (!strncmp(mem, "randwrite", 9)) {
566		td->ddir = DDIR_WRITE;
567		td->sequential = 0;
568		return 0;
569	} else if (!strncmp(mem, "rw", 2)) {
570		td->ddir = 0;
571		td->iomix = 1;
572		td->sequential = 1;
573		return 0;
574	} else if (!strncmp(mem, "randrw", 6)) {
575		td->ddir = 0;
576		td->iomix = 1;
577		td->sequential = 0;
578		return 0;
579	}
580
581	fprintf(stderr, "fio: data direction: read, write, randread, randwrite, rw, randrw\n");
582	return 1;
583}
584
585static int str_verify_cb(struct thread_data *td, char *mem)
586{
587	if (!strncmp(mem, "0", 1)) {
588		td->verify = VERIFY_NONE;
589		return 0;
590	} else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
591		td->verify = VERIFY_MD5;
592		return 0;
593	} else if (!strncmp(mem, "crc32", 5)) {
594		td->verify = VERIFY_CRC32;
595		return 0;
596	}
597
598	fprintf(stderr, "fio: verify types: md5, crc32\n");
599	return 1;
600}
601
602static int str_mem_cb(struct thread_data *td, char *mem)
603{
604	if (!strncmp(mem, "malloc", 6)) {
605		td->mem_type = MEM_MALLOC;
606		return 0;
607	} else if (!strncmp(mem, "shm", 3)) {
608		td->mem_type = MEM_SHM;
609		return 0;
610	} else if (!strncmp(mem, "mmap", 4)) {
611		td->mem_type = MEM_MMAP;
612		return 0;
613	}
614
615	fprintf(stderr, "fio: mem type: malloc, shm, mmap\n");
616	return 1;
617}
618
619static int str_ioengine_cb(struct thread_data *td, char *str)
620{
621	if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
622	    !strncmp(str, "libaio", 6)) {
623		strcpy(td->io_engine_name, "libaio");
624		td->io_engine = FIO_LIBAIO;
625		return 0;
626	} else if (!strncmp(str, "posixaio", 8)) {
627		strcpy(td->io_engine_name, "posixaio");
628		td->io_engine = FIO_POSIXAIO;
629		return 0;
630	} else if (!strncmp(str, "sync", 4)) {
631		strcpy(td->io_engine_name, "sync");
632		td->io_engine = FIO_SYNCIO;
633		return 0;
634	} else if (!strncmp(str, "mmap", 4)) {
635		strcpy(td->io_engine_name, "mmap");
636		td->io_engine = FIO_MMAPIO;
637		return 0;
638	} else if (!strncmp(str, "sgio", 4)) {
639		strcpy(td->io_engine_name, "sgio");
640		td->io_engine = FIO_SGIO;
641		return 0;
642	} else if (!strncmp(str, "splice", 6)) {
643		strcpy(td->io_engine_name, "splice");
644		td->io_engine = FIO_SPLICEIO;
645		return 0;
646	}
647
648	fprintf(stderr, "fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice\n");
649	return 1;
650}
651
652/*
653 * This is our [ini] type file parser.
654 */
655int parse_jobs_ini(char *file)
656{
657	unsigned int prioclass, prio, cpu, global, il;
658	unsigned long long ull;
659	unsigned long ul1, ul2;
660	struct thread_data *td;
661	char *string, *name, *tmpbuf;
662	fpos_t off;
663	FILE *f;
664	char *p;
665
666	f = fopen(file, "r");
667	if (!f) {
668		perror("fopen job file");
669		return 1;
670	}
671
672	string = malloc(4096);
673	name = malloc(256);
674	tmpbuf = malloc(4096);
675
676	while ((p = fgets(string, 4096, f)) != NULL) {
677		if (is_empty_or_comment(p))
678			continue;
679		if (sscanf(p, "[%s]", name) != 1)
680			continue;
681
682		global = !strncmp(name, "global", 6);
683
684		name[strlen(name) - 1] = '\0';
685
686		td = get_new_job(global, &def_thread);
687		if (!td)
688			return 1;
689
690		fgetpos(f, &off);
691		while ((p = fgets(string, 4096, f)) != NULL) {
692			if (is_empty_or_comment(p))
693				continue;
694			if (strstr(p, "["))
695				break;
696			strip_blank_front(&p);
697			strip_blank_end(p);
698
699			if (!check_int(p, "prio", &prio)) {
700#ifndef FIO_HAVE_IOPRIO
701				fprintf(stderr, "io priorities not available\n");
702				return 1;
703#endif
704				td->ioprio |= prio;
705				fgetpos(f, &off);
706				continue;
707			}
708			if (!check_int(p, "prioclass", &prioclass)) {
709#ifndef FIO_HAVE_IOPRIO
710				fprintf(stderr, "io priorities not available\n");
711				return 1;
712#endif
713				td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
714				fgetpos(f, &off);
715				continue;
716			}
717			if (!check_int(p, "direct", &td->odirect)) {
718				fgetpos(f, &off);
719				continue;
720			}
721			if (!check_int(p, "rate", &td->rate)) {
722				fgetpos(f, &off);
723				continue;
724			}
725			if (!check_int(p, "ratemin", &td->ratemin)) {
726				fgetpos(f, &off);
727				continue;
728			}
729			if (!check_int(p, "ratecycle", &td->ratecycle)) {
730				fgetpos(f, &off);
731				continue;
732			}
733			if (!check_int(p, "thinktime", &td->thinktime)) {
734				fgetpos(f, &off);
735				continue;
736			}
737			if (!check_int(p, "cpumask", &cpu)) {
738#ifndef FIO_HAVE_CPU_AFFINITY
739				fprintf(stderr, "cpu affinity not available\n");
740				return 1;
741#endif
742				fill_cpu_mask(td->cpumask, cpu);
743				fgetpos(f, &off);
744				continue;
745			}
746			if (!check_int(p, "fsync", &td->fsync_blocks)) {
747				fgetpos(f, &off);
748				td->end_fsync = 1;
749				continue;
750			}
751			if (!check_int(p, "startdelay", &td->start_delay)) {
752				fgetpos(f, &off);
753				continue;
754			}
755			if (!check_int(p, "timeout", &td->timeout)) {
756				fgetpos(f, &off);
757				continue;
758			}
759			if (!check_int(p, "invalidate",&td->invalidate_cache)) {
760				fgetpos(f, &off);
761				continue;
762			}
763			if (!check_int(p, "iodepth", &td->iodepth)) {
764				fgetpos(f, &off);
765				continue;
766			}
767			if (!check_int(p, "sync", &td->sync_io)) {
768				fgetpos(f, &off);
769				continue;
770			}
771			if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
772				fgetpos(f, &off);
773				continue;
774			}
775			if (!check_int(p, "create_serialize", &td->create_serialize)) {
776				fgetpos(f, &off);
777				continue;
778			}
779			if (!check_int(p, "create_fsync", &td->create_fsync)) {
780				fgetpos(f, &off);
781				continue;
782			}
783			if (!check_int(p, "end_fsync", &td->end_fsync)) {
784				fgetpos(f, &off);
785				continue;
786			}
787			if (!check_int(p, "loops", &td->loops)) {
788				fgetpos(f, &off);
789				continue;
790			}
791			if (!check_int(p, "numjobs", &td->numjobs)) {
792				fgetpos(f, &off);
793				continue;
794			}
795			if (!check_int(p, "overwrite", &td->overwrite)) {
796				fgetpos(f, &off);
797				continue;
798			}
799			if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
800				fgetpos(f, &off);
801				continue;
802			}
803			if (!check_int(p, "rwmixread", &il)) {
804				if (il > 100)
805					il = 100;
806				td->rwmixread = il;
807				fgetpos(f, &off);
808				continue;
809			}
810			if (!check_int(p, "rwmixwrite", &il)) {
811				if (il > 100)
812					il = 100;
813				td->rwmixread = 100 - il;
814				fgetpos(f, &off);
815				continue;
816			}
817			if (!check_int(p, "nice", &td->nice)) {
818				fgetpos(f, &off);
819				continue;
820			}
821			if (!check_range(p, "bsrange", &ul1, &ul2)) {
822				if (ul1 > ul2) {
823					td->max_bs = ul1;
824					td->min_bs = ul2;
825				} else {
826					td->max_bs = ul2;
827					td->min_bs = ul1;
828				}
829				fgetpos(f, &off);
830				continue;
831			}
832			if (!check_strcnv(p, "bs", &ull)) {
833				td->bs = ull;
834				fgetpos(f, &off);
835				continue;
836			}
837			if (!check_strcnv(p, "size", &td->file_size)) {
838				fgetpos(f, &off);
839				continue;
840			}
841			if (!check_strcnv(p, "offset", &td->file_offset)) {
842				fgetpos(f, &off);
843				continue;
844			}
845			if (!check_strcnv(p, "zonesize", &td->zone_size)) {
846				fgetpos(f, &off);
847				continue;
848			}
849			if (!check_strcnv(p, "zoneskip", &td->zone_skip)) {
850				fgetpos(f, &off);
851				continue;
852			}
853			if (!check_strcnv(p, "lockmem", &mlock_size)) {
854				fgetpos(f, &off);
855				continue;
856			}
857			if (!check_strstore(p, "directory", tmpbuf)) {
858				td->directory = strdup(tmpbuf);
859				fgetpos(f, &off);
860				continue;
861			}
862			if (!check_strstore(p, "name", tmpbuf)) {
863				snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
864				fgetpos(f, &off);
865				continue;
866			}
867			if (!check_str(p, "mem", str_mem_cb, td)) {
868				fgetpos(f, &off);
869				continue;
870			}
871			if (!check_str(p, "verify", str_verify_cb, td)) {
872				fgetpos(f, &off);
873				continue;
874			}
875			if (!check_str(p, "rw", str_rw_cb, td)) {
876				fgetpos(f, &off);
877				continue;
878			}
879			if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
880				fgetpos(f, &off);
881				continue;
882			}
883			if (!check_strset(p, "create")) {
884				td->create_file = 1;
885				fgetpos(f, &off);
886				continue;
887			}
888			if (!check_strset(p, "exitall")) {
889				exitall_on_terminate = 1;
890				fgetpos(f, &off);
891				continue;
892			}
893			if (!check_strset(p, "stonewall")) {
894				td->stonewall = 1;
895				fgetpos(f, &off);
896				continue;
897			}
898			if (!check_strset(p, "thread")) {
899				td->use_thread = 1;
900				fgetpos(f, &off);
901				continue;
902			}
903			if (!check_strstore(p, "iolog", tmpbuf)) {
904				td->iolog_file = strdup(tmpbuf);
905				td->read_iolog = 1;
906				td->write_iolog = 0;
907				fgetpos(f, &off);
908				continue;
909			}
910			if (!td->read_iolog &&
911			    !check_strstore(p, "write_iolog", tmpbuf)) {
912				td->iolog_file = strdup(tmpbuf);
913				td->write_iolog = 1;
914				fgetpos(f, &off);
915				continue;
916			}
917			if (!check_strstore(p, "exec_prerun", tmpbuf)) {
918				td->exec_prerun = strdup(tmpbuf);
919				fgetpos(f, &off);
920				continue;
921			}
922			if (!check_strstore(p, "exec_postrun", tmpbuf)) {
923				td->exec_postrun = strdup(tmpbuf);
924				fgetpos(f, &off);
925				continue;
926			}
927			if (!check_strstore(p, "ioscheduler", tmpbuf)) {
928				td->ioscheduler = strdup(tmpbuf);
929				fgetpos(f, &off);
930				continue;
931			}
932
933			printf("Client%d: bad option %s\n",td->thread_number,p);
934			return 1;
935		}
936		fsetpos(f, &off);
937
938		if (add_job(td, name, 0))
939			return 1;
940	}
941
942	free(string);
943	free(name);
944	free(tmpbuf);
945	fclose(f);
946	return 0;
947}
948
949static int fill_def_thread(void)
950{
951	memset(&def_thread, 0, sizeof(def_thread));
952
953	if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
954		perror("sched_getaffinity");
955		return 1;
956	}
957
958	/*
959	 * fill globals
960	 */
961	def_thread.ddir = DDIR_READ;
962	def_thread.iomix = 0;
963	def_thread.bs = DEF_BS;
964	def_thread.min_bs = -1;
965	def_thread.max_bs = -1;
966	def_thread.io_engine = DEF_IO_ENGINE;
967	strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
968	def_thread.odirect = DEF_ODIRECT;
969	def_thread.ratecycle = DEF_RATE_CYCLE;
970	def_thread.sequential = DEF_SEQUENTIAL;
971	def_thread.timeout = DEF_TIMEOUT;
972	def_thread.create_file = DEF_CREATE;
973	def_thread.overwrite = DEF_OVERWRITE;
974	def_thread.invalidate_cache = DEF_INVALIDATE;
975	def_thread.sync_io = DEF_SYNCIO;
976	def_thread.mem_type = MEM_MALLOC;
977	def_thread.bw_avg_time = DEF_BWAVGTIME;
978	def_thread.create_serialize = DEF_CREATE_SER;
979	def_thread.create_fsync = DEF_CREATE_FSYNC;
980	def_thread.loops = DEF_LOOPS;
981	def_thread.verify = DEF_VERIFY;
982	def_thread.stonewall = DEF_STONEWALL;
983	def_thread.numjobs = DEF_NUMJOBS;
984	def_thread.use_thread = DEF_USE_THREAD;
985	def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
986	def_thread.rwmixread = DEF_RWMIX_READ;
987	def_thread.nice = DEF_NICE;
988#ifdef FIO_HAVE_DISK_UTIL
989	def_thread.do_disk_util = 1;
990#endif
991
992	return 0;
993}
994
995static void usage(char *name)
996{
997	printf("%s\n", fio_version_string);
998	printf("\t-s IO is sequential\n");
999	printf("\t-b Block size in KiB for each IO\n");
1000	printf("\t-t Runtime in seconds\n");
1001	printf("\t-R Exit all threads on failure to meet rate goal\n");
1002	printf("\t-o Use O_DIRECT\n");
1003	printf("\t-l Generate per-job latency logs\n");
1004	printf("\t-w Generate per-job bandwidth logs\n");
1005	printf("\t-f Job file (Required)\n");
1006	printf("\t-v Print version info and exit\n");
1007}
1008
1009static void parse_cmd_line(int argc, char *argv[])
1010{
1011	int c;
1012
1013	while ((c = getopt(argc, argv, "s:b:t:r:R:o:f:lwvh")) != EOF) {
1014		switch (c) {
1015			case 's':
1016				def_thread.sequential = !!atoi(optarg);
1017				break;
1018			case 'b':
1019				def_thread.bs = atoi(optarg);
1020				def_thread.bs <<= 10;
1021				if (!def_thread.bs) {
1022					printf("bad block size\n");
1023					def_thread.bs = DEF_BS;
1024				}
1025				break;
1026			case 't':
1027				def_thread.timeout = atoi(optarg);
1028				break;
1029			case 'r':
1030				repeatable = !!atoi(optarg);
1031				break;
1032			case 'R':
1033				rate_quit = !!atoi(optarg);
1034				break;
1035			case 'o':
1036				def_thread.odirect = !!atoi(optarg);
1037				break;
1038			case 'f':
1039				ini_file = strdup(optarg);
1040				break;
1041			case 'l':
1042				write_lat_log = 1;
1043				break;
1044			case 'w':
1045				write_bw_log = 1;
1046				break;
1047			case 'h':
1048				usage(argv[0]);
1049				exit(0);
1050			case 'v':
1051				printf("%s\n", fio_version_string);
1052				exit(0);
1053		}
1054	}
1055
1056	if (!ini_file && argc > 1 && argv[argc - 1][0] != '-')
1057		ini_file = strdup(argv[argc - 1]);
1058}
1059
1060static void free_shm(void)
1061{
1062	struct shmid_ds sbuf;
1063
1064	if (threads) {
1065		shmdt(threads);
1066		threads = NULL;
1067		shmctl(shm_id, IPC_RMID, &sbuf);
1068	}
1069}
1070
1071static int setup_thread_area(void)
1072{
1073	/*
1074	 * 1024 is too much on some machines, scale max_jobs if
1075	 * we get a failure that looks like too large a shm segment
1076	 */
1077	do {
1078		int s = max_jobs * sizeof(struct thread_data);
1079
1080		shm_id = shmget(0, s, IPC_CREAT | 0600);
1081		if (shm_id != -1)
1082			break;
1083		if (errno != EINVAL) {
1084			perror("shmget");
1085			break;
1086		}
1087
1088		max_jobs >>= 1;
1089	} while (max_jobs);
1090
1091	if (shm_id == -1)
1092		return 1;
1093
1094	threads = shmat(shm_id, NULL, 0);
1095	if (threads == (void *) -1) {
1096		perror("shmat");
1097		return 1;
1098	}
1099
1100	atexit(free_shm);
1101	return 0;
1102}
1103
1104int parse_options(int argc, char *argv[])
1105{
1106	if (setup_thread_area())
1107		return 1;
1108	if (fill_def_thread())
1109		return 1;
1110
1111	parse_cmd_line(argc, argv);
1112
1113	if (!ini_file) {
1114		printf("Need job file\n");
1115		usage(argv[0]);
1116		return 1;
1117	}
1118
1119	if (parse_jobs_ini(ini_file))
1120		return 1;
1121
1122	return 0;
1123}
1124