init.c revision 13f8e2d2e3e5ec7d8c18b70fb2a2e2a026190020 
1/*
2 * This file contains the ini and command liner parser. It will create
3 * and initialize the specified jobs.
4 */
5#include <stdio.h>
6#include <stdlib.h>
7#include <unistd.h>
8#include <fcntl.h>
9#include <ctype.h>
10#include <string.h>
11#include <errno.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
19/*
20 * The default options
21 */
22#define DEF_BS			(4096)
23#define DEF_TIMEOUT		(0)
24#define DEF_RATE_CYCLE		(1000)
25#define DEF_ODIRECT		(1)
26#define DEF_IO_ENGINE		(FIO_SYNCIO)
27#define DEF_IO_ENGINE_NAME	"sync"
28#define DEF_SEQUENTIAL		(1)
29#define DEF_RAND_REPEAT		(1)
30#define DEF_OVERWRITE		(1)
31#define DEF_INVALIDATE		(1)
32#define DEF_SYNCIO		(0)
33#define DEF_RANDSEED		(0xb1899bedUL)
34#define DEF_BWAVGTIME		(500)
35#define DEF_CREATE_SER		(1)
36#define DEF_CREATE_FSYNC	(1)
37#define DEF_LOOPS		(1)
38#define DEF_VERIFY		(0)
39#define DEF_STONEWALL		(0)
40#define DEF_NUMJOBS		(1)
41#define DEF_USE_THREAD		(0)
42#define DEF_FILE_SIZE		(1024 * 1024 * 1024UL)
43#define DEF_ZONE_SIZE		(0)
44#define DEF_ZONE_SKIP		(0)
45#define DEF_RWMIX_CYCLE		(500)
46#define DEF_RWMIX_READ		(50)
47#define DEF_NICE		(0)
48#define DEF_NR_FILES		(1)
49#define DEF_UNLINK		(0)
50#define DEF_WRITE_BW_LOG	(0)
51#define DEF_WRITE_LAT_LOG	(0)
52
53static int def_timeout = DEF_TIMEOUT;
54
55static char fio_version_string[] = "fio 1.5";
56
57static char **ini_file;
58static int max_jobs = MAX_JOBS;
59
60struct thread_data def_thread;
61struct thread_data *threads = NULL;
62
63int rate_quit = 0;
64int exitall_on_terminate = 0;
65int terse_output = 0;
66unsigned long long mlock_size = 0;
67FILE *f_out = NULL;
68FILE *f_err = NULL;
69
70static int write_lat_log = DEF_WRITE_LAT_LOG;
71static int write_bw_log = DEF_WRITE_BW_LOG;
72
73/*
74 * Return a free job structure.
75 */
76static struct thread_data *get_new_job(int global, struct thread_data *parent)
77{
78	struct thread_data *td;
79
80	if (global)
81		return &def_thread;
82	if (thread_number >= max_jobs)
83		return NULL;
84
85	td = &threads[thread_number++];
86	*td = *parent;
87	td->name[0] = '\0';
88
89	td->thread_number = thread_number;
90	return td;
91}
92
93static void put_job(struct thread_data *td)
94{
95	memset(&threads[td->thread_number - 1], 0, sizeof(*td));
96	thread_number--;
97}
98
99/*
100 * Adds a job to the list of things todo. Sanitizes the various options
101 * to make sure we don't have conflicts, and initializes various
102 * members of td.
103 */
104static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
105{
106	char *ddir_str[] = { "read", "write", "randread", "randwrite",
107			     "rw", NULL, "randrw" };
108	struct stat sb;
109	int numjobs, ddir, i;
110	struct fio_file *f;
111
112#ifndef FIO_HAVE_LIBAIO
113	if (td->io_engine == FIO_LIBAIO) {
114		log_err("Linux libaio not available\n");
115		return 1;
116	}
117#endif
118#ifndef FIO_HAVE_POSIXAIO
119	if (td->io_engine == FIO_POSIXAIO) {
120		log_err("posix aio not available\n");
121		return 1;
122	}
123#endif
124
125	/*
126	 * the def_thread is just for options, it's not a real job
127	 */
128	if (td == &def_thread)
129		return 0;
130
131	/*
132	 * Set default io engine, if none set
133	 */
134	if (!td->io_ops) {
135		td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
136		if (!td->io_ops) {
137			log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
138			return 1;
139		}
140	}
141
142	if (td->io_ops->flags & FIO_SYNCIO)
143		td->iodepth = 1;
144	else {
145		if (!td->iodepth)
146			td->iodepth = td->nr_files;
147	}
148
149	/*
150	 * only really works for sequential io for now, and with 1 file
151	 */
152	if (td->zone_size && !td->sequential && td->nr_files == 1)
153		td->zone_size = 0;
154
155	/*
156	 * Reads can do overwrites, we always need to pre-create the file
157	 */
158	if (td_read(td) || td_rw(td))
159		td->overwrite = 1;
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->odirect)
170		td->io_ops->flags |= FIO_RAWIO;
171
172	if (td->filename)
173		td->nr_uniq_files = 1;
174	else
175		td->nr_uniq_files = td->nr_files;
176
177	if (td->filetype == FIO_TYPE_FILE || td->filename) {
178		char tmp[PATH_MAX];
179		int len = 0;
180		int i;
181
182		if (td->directory && td->directory[0] != '\0')
183			sprintf(tmp, "%s/", td->directory);
184
185		td->files = malloc(sizeof(struct fio_file) * td->nr_files);
186
187		for_each_file(td, f, i) {
188			memset(f, 0, sizeof(*f));
189			f->fd = -1;
190			f->fileno = i;
191
192			if (td->filename)
193				sprintf(tmp + len, "%s", td->filename);
194			else
195				sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
196			f->file_name = strdup(tmp);
197		}
198	} else {
199		td->nr_files = 1;
200		td->files = malloc(sizeof(struct fio_file));
201		f = &td->files[0];
202
203		memset(f, 0, sizeof(*f));
204		f->fd = -1;
205		f->file_name = strdup(jobname);
206	}
207
208	for_each_file(td, f, i) {
209		f->file_size = td->total_file_size / td->nr_files;
210		f->file_offset = td->start_offset;
211	}
212
213	fio_sem_init(&td->mutex, 0);
214
215	td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
216	td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
217	td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
218
219	if (td->min_bs == -1U)
220		td->min_bs = td->bs;
221	if (td->max_bs == -1U)
222		td->max_bs = td->bs;
223	if (td_read(td) && !td_rw(td))
224		td->verify = 0;
225
226	if (td->stonewall && td->thread_number > 1)
227		groupid++;
228
229	td->groupid = groupid;
230
231	if (setup_rate(td))
232		goto err;
233
234	if (td->write_lat_log) {
235		setup_log(&td->slat_log);
236		setup_log(&td->clat_log);
237	}
238	if (td->write_bw_log)
239		setup_log(&td->bw_log);
240
241	if (td->name[0] == '\0')
242		snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
243
244	ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
245
246	if (!terse_output) {
247		if (!job_add_num) {
248			if (td->io_ops->flags & FIO_CPUIO)
249				fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
250			else
251				fprintf(f_out, "%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_ops->name, td->iodepth);
252		} else if (job_add_num == 1)
253			fprintf(f_out, "...\n");
254	}
255
256	/*
257	 * recurse add identical jobs, clear numjobs and stonewall options
258	 * as they don't apply to sub-jobs
259	 */
260	numjobs = td->numjobs;
261	while (--numjobs) {
262		struct thread_data *td_new = get_new_job(0, td);
263
264		if (!td_new)
265			goto err;
266
267		td_new->numjobs = 1;
268		td_new->stonewall = 0;
269		job_add_num = numjobs - 1;
270
271		if (add_job(td_new, jobname, job_add_num))
272			goto err;
273	}
274	return 0;
275err:
276	put_job(td);
277	return -1;
278}
279
280/*
281 * Initialize the various random states we need (random io, block size ranges,
282 * read/write mix, etc).
283 */
284int init_random_state(struct thread_data *td)
285{
286	unsigned long seeds[4];
287	int fd, num_maps, blocks, i;
288	struct fio_file *f;
289
290	fd = open("/dev/urandom", O_RDONLY);
291	if (fd == -1) {
292		td_verror(td, errno);
293		return 1;
294	}
295
296	if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
297		td_verror(td, EIO);
298		close(fd);
299		return 1;
300	}
301
302	close(fd);
303
304	os_random_seed(seeds[0], &td->bsrange_state);
305	os_random_seed(seeds[1], &td->verify_state);
306	os_random_seed(seeds[2], &td->rwmix_state);
307
308	if (td->sequential)
309		return 0;
310
311	if (td->rand_repeatable)
312		seeds[3] = DEF_RANDSEED;
313
314	for_each_file(td, f, i) {
315		blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
316		num_maps = blocks / BLOCKS_PER_MAP;
317		f->file_map = malloc(num_maps * sizeof(long));
318		f->num_maps = num_maps;
319		memset(f->file_map, 0, num_maps * sizeof(long));
320	}
321
322	os_random_seed(seeds[3], &td->random_state);
323	return 0;
324}
325
326static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
327{
328#ifdef FIO_HAVE_CPU_AFFINITY
329	unsigned int i;
330
331	CPU_ZERO(&cpumask);
332
333	for (i = 0; i < sizeof(int) * 8; i++) {
334		if ((1 << i) & cpu)
335			CPU_SET(i, &cpumask);
336	}
337#endif
338}
339
340static unsigned long get_mult_time(char c)
341{
342	switch (c) {
343		case 'm':
344		case 'M':
345			return 60;
346		case 'h':
347		case 'H':
348			return 60 * 60;
349		case 'd':
350		case 'D':
351			return 24 * 60 * 60;
352		default:
353			return 1;
354	}
355}
356
357static unsigned long get_mult_bytes(char c)
358{
359	switch (c) {
360		case 'k':
361		case 'K':
362			return 1024;
363		case 'm':
364		case 'M':
365			return 1024 * 1024;
366		case 'g':
367		case 'G':
368			return 1024 * 1024 * 1024;
369		default:
370			return 1;
371	}
372}
373
374/*
375 * convert string after '=' into decimal value, noting any size suffix
376 */
377static int str_to_decimal(char *p, unsigned long long *val, int kilo)
378{
379	char *str;
380	int len;
381
382	str = strchr(p, '=');
383	if (!str)
384		return 1;
385
386	str++;
387	len = strlen(str);
388
389	*val = strtoul(str, NULL, 10);
390	if (*val == ULONG_MAX && errno == ERANGE)
391		return 1;
392
393	if (kilo)
394		*val *= get_mult_bytes(str[len - 1]);
395	else
396		*val *= get_mult_time(str[len - 1]);
397	return 0;
398}
399
400static int check_str_bytes(char *p, char *name, unsigned long long *val)
401{
402	if (strncmp(p, name, strlen(name) - 1))
403		return 1;
404
405	return str_to_decimal(p, val, 1);
406}
407
408static int check_str_time(char *p, char *name, unsigned long long *val)
409{
410	if (strncmp(p, name, strlen(name) - 1))
411		return 1;
412
413	return str_to_decimal(p, val, 0);
414}
415
416static void strip_blank_front(char **p)
417{
418	char *s = *p;
419
420	while (isspace(*s))
421		s++;
422}
423
424static void strip_blank_end(char *p)
425{
426	char *s = p + strlen(p) - 1;
427
428	while (isspace(*s) || iscntrl(*s))
429		s--;
430
431	*(s + 1) = '\0';
432}
433
434typedef int (str_cb_fn)(struct thread_data *, char *);
435
436static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
437{
438	char *s;
439
440	if (strncmp(p, name, strlen(name)))
441		return 1;
442
443	s = strstr(p, name);
444	if (!s)
445		return 1;
446
447	s = strchr(s, '=');
448	if (!s)
449		return 1;
450
451	s++;
452	strip_blank_front(&s);
453	return cb(td, s);
454}
455
456static int check_strstore(char *p, char *name, char *dest)
457{
458	char *s;
459
460	if (strncmp(p, name, strlen(name)))
461		return 1;
462
463	s = strstr(p, name);
464	if (!s)
465		return 1;
466
467	s = strchr(p, '=');
468	if (!s)
469		return 1;
470
471	s++;
472	strip_blank_front(&s);
473
474	strcpy(dest, s);
475	return 0;
476}
477
478static int __check_range_bytes(char *str, unsigned long *val)
479{
480	char suffix;
481
482	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
483		*val *= get_mult_bytes(suffix);
484		return 0;
485	}
486
487	if (sscanf(str, "%lu", val) == 1)
488		return 0;
489
490	return 1;
491}
492
493static int check_range_bytes(char *p, char *name, unsigned long *s,
494			     unsigned long *e)
495{
496	char option[128];
497	char *str, *p1, *p2;
498
499	if (strncmp(p, name, strlen(name)))
500		return 1;
501
502	strcpy(option, p);
503	p = option;
504
505	str = strstr(p, name);
506	if (!str)
507		return 1;
508
509	p += strlen(name);
510
511	str = strchr(p, '=');
512	if (!str)
513		return 1;
514
515	/*
516	 * 'p' now holds whatever is after the '=' sign
517	 */
518	p1 = str + 1;
519
520	/*
521	 * terminate p1 at the '-' sign
522	 */
523	p = strchr(p1, '-');
524	if (!p)
525		return 1;
526
527	p2 = p + 1;
528	*p = '\0';
529
530	if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
531		return 0;
532
533	return 1;
534}
535
536static int check_int(char *p, char *name, unsigned int *val)
537{
538	char *str;
539
540	if (strncmp(p, name, strlen(name)))
541		return 1;
542
543	str = strstr(p, name);
544	if (!str)
545		return 1;
546
547	str = strchr(p, '=');
548	if (!str)
549		return 1;
550
551	str++;
552
553	if (sscanf(str, "%u", val) == 1)
554		return 0;
555
556	return 1;
557}
558
559static int check_strset(char *p, char *name)
560{
561	return strncmp(p, name, strlen(name));
562}
563
564static int is_empty_or_comment(char *line)
565{
566	unsigned int i;
567
568	for (i = 0; i < strlen(line); i++) {
569		if (line[i] == ';')
570			return 1;
571		if (!isspace(line[i]) && !iscntrl(line[i]))
572			return 0;
573	}
574
575	return 1;
576}
577
578static int str_rw_cb(struct thread_data *td, char *mem)
579{
580	if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
581		td->ddir = DDIR_READ;
582		td->sequential = 1;
583		return 0;
584	} else if (!strncmp(mem, "randread", 8)) {
585		td->ddir = DDIR_READ;
586		td->sequential = 0;
587		return 0;
588	} else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
589		td->ddir = DDIR_WRITE;
590		td->sequential = 1;
591		return 0;
592	} else if (!strncmp(mem, "randwrite", 9)) {
593		td->ddir = DDIR_WRITE;
594		td->sequential = 0;
595		return 0;
596	} else if (!strncmp(mem, "rw", 2)) {
597		td->ddir = 0;
598		td->iomix = 1;
599		td->sequential = 1;
600		return 0;
601	} else if (!strncmp(mem, "randrw", 6)) {
602		td->ddir = 0;
603		td->iomix = 1;
604		td->sequential = 0;
605		return 0;
606	}
607
608	log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
609	return 1;
610}
611
612static int str_verify_cb(struct thread_data *td, char *mem)
613{
614	if (!strncmp(mem, "0", 1)) {
615		td->verify = VERIFY_NONE;
616		return 0;
617	} else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
618		td->verify = VERIFY_MD5;
619		return 0;
620	} else if (!strncmp(mem, "crc32", 5)) {
621		td->verify = VERIFY_CRC32;
622		return 0;
623	}
624
625	log_err("fio: verify types: md5, crc32\n");
626	return 1;
627}
628
629static int str_mem_cb(struct thread_data *td, char *mem)
630{
631	if (!strncmp(mem, "malloc", 6)) {
632		td->mem_type = MEM_MALLOC;
633		return 0;
634	} else if (!strncmp(mem, "shm", 3)) {
635		td->mem_type = MEM_SHM;
636		return 0;
637	} else if (!strncmp(mem, "mmap", 4)) {
638		td->mem_type = MEM_MMAP;
639		return 0;
640	}
641
642	log_err("fio: mem type: malloc, shm, mmap\n");
643	return 1;
644}
645
646static int str_ioengine_cb(struct thread_data *td, char *str)
647{
648	td->io_ops = load_ioengine(td, str);
649	if (td->io_ops)
650		return 0;
651
652	log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
653	return 1;
654}
655
656/*
657 * This is our [ini] type file parser.
658 */
659int parse_jobs_ini(char *file, int stonewall_flag)
660{
661	unsigned int prioclass, prio, cpu, global, il;
662	unsigned long long ull;
663	unsigned long ul1, ul2;
664	struct thread_data *td;
665	char *string, *name, *tmpbuf;
666	fpos_t off;
667	FILE *f;
668	char *p;
669	int ret = 0, stonewall;
670
671	f = fopen(file, "r");
672	if (!f) {
673		perror("fopen job file");
674		return 1;
675	}
676
677	string = malloc(4096);
678	name = malloc(256);
679	tmpbuf = malloc(4096);
680
681	stonewall = stonewall_flag;
682	while ((p = fgets(string, 4096, f)) != NULL) {
683		if (ret)
684			break;
685		if (is_empty_or_comment(p))
686			continue;
687		if (sscanf(p, "[%s]", name) != 1)
688			continue;
689
690		global = !strncmp(name, "global", 6);
691
692		name[strlen(name) - 1] = '\0';
693
694		td = get_new_job(global, &def_thread);
695		if (!td) {
696			ret = 1;
697			break;
698		}
699
700		/*
701		 * Seperate multiple job files by a stonewall
702		 */
703		if (!global && stonewall) {
704			td->stonewall = stonewall;
705			stonewall = 0;
706		}
707
708		fgetpos(f, &off);
709		while ((p = fgets(string, 4096, f)) != NULL) {
710			if (is_empty_or_comment(p))
711				continue;
712			if (strstr(p, "["))
713				break;
714			strip_blank_front(&p);
715			strip_blank_end(p);
716
717			if (!check_int(p, "prio", &prio)) {
718#ifndef FIO_HAVE_IOPRIO
719				log_err("io priorities not available\n");
720				ret = 1;
721				break;
722#endif
723				td->ioprio |= prio;
724				fgetpos(f, &off);
725				continue;
726			}
727			if (!check_int(p, "prioclass", &prioclass)) {
728#ifndef FIO_HAVE_IOPRIO
729				log_err("io priorities not available\n");
730				ret = 1;
731				break;
732#else
733				td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
734				fgetpos(f, &off);
735				continue;
736#endif
737			}
738			if (!check_int(p, "direct", &il)) {
739				td->odirect = il;
740				fgetpos(f, &off);
741				continue;
742			}
743			if (!check_int(p, "rand_repeatable", &il)) {
744				td->rand_repeatable = il;
745				fgetpos(f, &off);
746				continue;
747			}
748			if (!check_int(p, "rate", &td->rate)) {
749				fgetpos(f, &off);
750				continue;
751			}
752			if (!check_int(p, "ratemin", &td->ratemin)) {
753				fgetpos(f, &off);
754				continue;
755			}
756			if (!check_int(p, "ratecycle", &td->ratecycle)) {
757				fgetpos(f, &off);
758				continue;
759			}
760			if (!check_int(p, "cpuload", &td->cpuload)) {
761				fgetpos(f, &off);
762				continue;
763			}
764			if (!check_int(p, "cpuchunks", &td->cpucycle)) {
765				fgetpos(f, &off);
766				continue;
767			}
768			if (!check_int(p, "thinktime", &td->thinktime)) {
769				fgetpos(f, &off);
770				continue;
771			}
772			if (!check_int(p, "cpumask", &cpu)) {
773#ifndef FIO_HAVE_CPU_AFFINITY
774				log_err("cpu affinity not available\n");
775				ret = 1;
776				break;
777#endif
778				fill_cpu_mask(td->cpumask, cpu);
779				fgetpos(f, &off);
780				continue;
781			}
782			if (!check_int(p, "fsync", &td->fsync_blocks)) {
783				fgetpos(f, &off);
784				td->end_fsync = 1;
785				continue;
786			}
787			if (!check_int(p, "startdelay", &td->start_delay)) {
788				fgetpos(f, &off);
789				continue;
790			}
791			if (!check_str_time(p, "timeout", &ull)) {
792				td->timeout = ull;
793				fgetpos(f, &off);
794				continue;
795			}
796			if (!check_int(p, "invalidate", &il)) {
797				td->invalidate_cache = il;
798				fgetpos(f, &off);
799				continue;
800			}
801			if (!check_int(p, "iodepth", &td->iodepth)) {
802				fgetpos(f, &off);
803				continue;
804			}
805			if (!check_int(p, "sync", &il)) {
806				td->sync_io = il;
807				fgetpos(f, &off);
808				continue;
809			}
810			if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
811				fgetpos(f, &off);
812				continue;
813			}
814			if (!check_int(p, "create_serialize", &il)) {
815				td->create_serialize = il;
816				fgetpos(f, &off);
817				continue;
818			}
819			if (!check_int(p, "create_fsync", &il)) {
820				td->create_fsync = il;
821				fgetpos(f, &off);
822				continue;
823			}
824			if (!check_int(p, "end_fsync", &il)) {
825				td->end_fsync = il;
826				fgetpos(f, &off);
827				continue;
828			}
829			if (!check_int(p, "loops", &td->loops)) {
830				fgetpos(f, &off);
831				continue;
832			}
833			if (!check_int(p, "numjobs", &td->numjobs)) {
834				fgetpos(f, &off);
835				continue;
836			}
837			if (!check_int(p, "overwrite", &il)) {
838				td->overwrite = il;
839				fgetpos(f, &off);
840				continue;
841			}
842			if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
843				fgetpos(f, &off);
844				continue;
845			}
846			if (!check_int(p, "rwmixread", &il)) {
847				if (il > 100)
848					il = 100;
849				td->rwmixread = il;
850				fgetpos(f, &off);
851				continue;
852			}
853			if (!check_int(p, "rwmixwrite", &il)) {
854				if (il > 100)
855					il = 100;
856				td->rwmixread = 100 - il;
857				fgetpos(f, &off);
858				continue;
859			}
860			if (!check_int(p, "nice", &td->nice)) {
861				fgetpos(f, &off);
862				continue;
863			}
864			if (!check_int(p, "nrfiles", &td->nr_files)) {
865				fgetpos(f, &off);
866				continue;
867			}
868			if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
869				if (ul1 > ul2) {
870					td->max_bs = ul1;
871					td->min_bs = ul2;
872				} else {
873					td->max_bs = ul2;
874					td->min_bs = ul1;
875				}
876				fgetpos(f, &off);
877				continue;
878			}
879			if (!check_str_bytes(p, "bs", &ull)) {
880				td->bs = ull;
881				fgetpos(f, &off);
882				continue;
883			}
884			if (!check_str_bytes(p, "size", &td->total_file_size)) {
885				fgetpos(f, &off);
886				continue;
887			}
888			if (!check_str_bytes(p, "offset", &td->start_offset)) {
889				fgetpos(f, &off);
890				continue;
891			}
892			if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
893				fgetpos(f, &off);
894				continue;
895			}
896			if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
897				fgetpos(f, &off);
898				continue;
899			}
900			if (!check_str_bytes(p, "lockmem", &mlock_size)) {
901				fgetpos(f, &off);
902				continue;
903			}
904			if (!check_strstore(p, "directory", tmpbuf)) {
905				td->directory = strdup(tmpbuf);
906				fgetpos(f, &off);
907				continue;
908			}
909			if (!check_strstore(p, "filename", tmpbuf)) {
910				td->filename = strdup(tmpbuf);
911				fgetpos(f, &off);
912				continue;
913			}
914			if (!check_strstore(p, "name", tmpbuf)) {
915				snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
916				fgetpos(f, &off);
917				continue;
918			}
919			if (!check_str(p, "mem", str_mem_cb, td)) {
920				fgetpos(f, &off);
921				continue;
922			}
923			if (!check_str(p, "verify", str_verify_cb, td)) {
924				fgetpos(f, &off);
925				continue;
926			}
927			if (!check_str(p, "rw", str_rw_cb, td)) {
928				fgetpos(f, &off);
929				continue;
930			}
931			if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
932				fgetpos(f, &off);
933				continue;
934			}
935			if (!check_strset(p, "exitall")) {
936				exitall_on_terminate = 1;
937				fgetpos(f, &off);
938				continue;
939			}
940			if (!check_strset(p, "stonewall")) {
941				td->stonewall = 1;
942				fgetpos(f, &off);
943				continue;
944			}
945			if (!check_strset(p, "thread")) {
946				td->use_thread = 1;
947				fgetpos(f, &off);
948				continue;
949			}
950			if (!check_strset(p, "unlink")) {
951				td->unlink = 1;
952				fgetpos(f, &off);
953				continue;
954			}
955			if (!check_strset(p, "write_bw_log")) {
956				td->write_bw_log = 1;
957				fgetpos(f, &off);
958				continue;
959			}
960			if (!check_strset(p, "write_lat_log")) {
961				td->write_lat_log = 1;
962				fgetpos(f, &off);
963				continue;
964			}
965			if (!check_strstore(p, "iolog", tmpbuf)) {
966				if (td->write_iolog) {
967					log_err("fio: read iolog overrides given write_iolog\n");
968					free(td->iolog_file);
969					td->write_iolog = 0;
970				}
971				td->iolog_file = strdup(tmpbuf);
972				td->read_iolog = 1;
973				fgetpos(f, &off);
974				continue;
975			}
976			if (!check_strstore(p, "write_iolog", tmpbuf)) {
977				if (!td->read_iolog) {
978					td->iolog_file = strdup(tmpbuf);
979					td->write_iolog = 1;
980				} else
981					log_err("fio: read iolog overrides given write_iolog\n");
982				fgetpos(f, &off);
983				continue;
984			}
985			if (!check_strstore(p, "exec_prerun", tmpbuf)) {
986				td->exec_prerun = strdup(tmpbuf);
987				fgetpos(f, &off);
988				continue;
989			}
990			if (!check_strstore(p, "exec_postrun", tmpbuf)) {
991				td->exec_postrun = strdup(tmpbuf);
992				fgetpos(f, &off);
993				continue;
994			}
995			if (!check_strstore(p, "ioscheduler", tmpbuf)) {
996#ifndef FIO_HAVE_IOSCHED_SWITCH
997				log_err("io scheduler switching not available\n");
998				ret = 1;
999				break;
1000#else
1001				td->ioscheduler = strdup(tmpbuf);
1002				fgetpos(f, &off);
1003				continue;
1004#endif
1005			}
1006
1007			/*
1008			 * Don't break here, continue parsing options so we
1009			 * dump all the bad ones. Makes trial/error fixups
1010			 * easier on the user.
1011			 */
1012			printf("Client%d: bad option %s\n",td->thread_number,p);
1013			ret = 1;
1014		}
1015
1016		if (!ret) {
1017			fsetpos(f, &off);
1018			ret = add_job(td, name, 0);
1019		}
1020		if (ret)
1021			break;
1022	}
1023
1024	free(string);
1025	free(name);
1026	free(tmpbuf);
1027	fclose(f);
1028	return ret;
1029}
1030
1031static int fill_def_thread(void)
1032{
1033	memset(&def_thread, 0, sizeof(def_thread));
1034
1035	if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1036		perror("sched_getaffinity");
1037		return 1;
1038	}
1039
1040	/*
1041	 * fill globals
1042	 */
1043	def_thread.ddir = DDIR_READ;
1044	def_thread.iomix = 0;
1045	def_thread.bs = DEF_BS;
1046	def_thread.min_bs = -1;
1047	def_thread.max_bs = -1;
1048	def_thread.odirect = DEF_ODIRECT;
1049	def_thread.ratecycle = DEF_RATE_CYCLE;
1050	def_thread.sequential = DEF_SEQUENTIAL;
1051	def_thread.timeout = def_timeout;
1052	def_thread.overwrite = DEF_OVERWRITE;
1053	def_thread.invalidate_cache = DEF_INVALIDATE;
1054	def_thread.sync_io = DEF_SYNCIO;
1055	def_thread.mem_type = MEM_MALLOC;
1056	def_thread.bw_avg_time = DEF_BWAVGTIME;
1057	def_thread.create_serialize = DEF_CREATE_SER;
1058	def_thread.create_fsync = DEF_CREATE_FSYNC;
1059	def_thread.loops = DEF_LOOPS;
1060	def_thread.verify = DEF_VERIFY;
1061	def_thread.stonewall = DEF_STONEWALL;
1062	def_thread.numjobs = DEF_NUMJOBS;
1063	def_thread.use_thread = DEF_USE_THREAD;
1064	def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1065	def_thread.rwmixread = DEF_RWMIX_READ;
1066	def_thread.nice = DEF_NICE;
1067	def_thread.rand_repeatable = DEF_RAND_REPEAT;
1068	def_thread.nr_files = DEF_NR_FILES;
1069	def_thread.unlink = DEF_UNLINK;
1070	def_thread.write_bw_log = write_bw_log;
1071	def_thread.write_lat_log = write_lat_log;
1072#ifdef FIO_HAVE_DISK_UTIL
1073	def_thread.do_disk_util = 1;
1074#endif
1075
1076	return 0;
1077}
1078
1079static void usage(void)
1080{
1081	printf("%s\n", fio_version_string);
1082	printf("\t-o Write output to file\n");
1083	printf("\t-t Runtime in seconds\n");
1084	printf("\t-l Generate per-job latency logs\n");
1085	printf("\t-w Generate per-job bandwidth logs\n");
1086	printf("\t-m Minimal (terse) output\n");
1087	printf("\t-v Print version info and exit\n");
1088}
1089
1090static int parse_cmd_line(int argc, char *argv[])
1091{
1092	int c, idx = 1, ini_idx = 0;
1093
1094	while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1095		switch (c) {
1096			case 't':
1097				def_timeout = atoi(optarg);
1098				idx = optind;
1099				break;
1100			case 'l':
1101				write_lat_log = 1;
1102				idx = optind;
1103				break;
1104			case 'w':
1105				write_bw_log = 1;
1106				idx = optind;
1107				break;
1108			case 'o':
1109				f_out = fopen(optarg, "w+");
1110				if (!f_out) {
1111					perror("fopen output");
1112					exit(1);
1113				}
1114				f_err = f_out;
1115				idx = optind;
1116				break;
1117			case 'm':
1118				terse_output = 1;
1119				idx = optind;
1120				break;
1121			case 'h':
1122				usage();
1123				exit(0);
1124			case 'v':
1125				printf("%s\n", fio_version_string);
1126				exit(0);
1127		}
1128	}
1129
1130	while (idx < argc) {
1131		ini_idx++;
1132		ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1133		ini_file[ini_idx - 1] = strdup(argv[idx]);
1134		idx++;
1135	}
1136
1137	if (!f_out) {
1138		f_out = stdout;
1139		f_err = stderr;
1140	}
1141
1142	return ini_idx;
1143}
1144
1145static void free_shm(void)
1146{
1147	struct shmid_ds sbuf;
1148
1149	if (threads) {
1150		shmdt((void *) threads);
1151		threads = NULL;
1152		shmctl(shm_id, IPC_RMID, &sbuf);
1153	}
1154}
1155
1156/*
1157 * The thread area is shared between the main process and the job
1158 * threads/processes. So setup a shared memory segment that will hold
1159 * all the job info.
1160 */
1161static int setup_thread_area(void)
1162{
1163	/*
1164	 * 1024 is too much on some machines, scale max_jobs if
1165	 * we get a failure that looks like too large a shm segment
1166	 */
1167	do {
1168		size_t size = max_jobs * sizeof(struct thread_data);
1169
1170		shm_id = shmget(0, size, IPC_CREAT | 0600);
1171		if (shm_id != -1)
1172			break;
1173		if (errno != EINVAL) {
1174			perror("shmget");
1175			break;
1176		}
1177
1178		max_jobs >>= 1;
1179	} while (max_jobs);
1180
1181	if (shm_id == -1)
1182		return 1;
1183
1184	threads = shmat(shm_id, NULL, 0);
1185	if (threads == (void *) -1) {
1186		perror("shmat");
1187		return 1;
1188	}
1189
1190	atexit(free_shm);
1191	return 0;
1192}
1193
1194int parse_options(int argc, char *argv[])
1195{
1196	int job_files, i;
1197
1198	if (setup_thread_area())
1199		return 1;
1200	if (fill_def_thread())
1201		return 1;
1202
1203	job_files = parse_cmd_line(argc, argv);
1204	if (!job_files) {
1205		log_err("Need job file(s)\n");
1206		usage();
1207		return 1;
1208	}
1209
1210	for (i = 0; i < job_files; i++) {
1211		if (fill_def_thread())
1212			return 1;
1213		if (parse_jobs_ini(ini_file[i], i))
1214			return 1;
1215		free(ini_file[i]);
1216	}
1217
1218	free(ini_file);
1219	return 0;
1220}
1221