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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_CREATE (1)
32#define DEF_INVALIDATE (1)
33#define DEF_SYNCIO (0)
34#define DEF_RANDSEED (0xb1899bedUL)
35#define DEF_BWAVGTIME (500)
36#define DEF_CREATE_SER (1)
37#define DEF_CREATE_FSYNC (1)
38#define DEF_LOOPS (1)
39#define DEF_VERIFY (0)
40#define DEF_STONEWALL (0)
41#define DEF_NUMJOBS (1)
42#define DEF_USE_THREAD (0)
43#define DEF_FILE_SIZE (1024 * 1024 * 1024UL)
44#define DEF_ZONE_SIZE (0)
45#define DEF_ZONE_SKIP (0)
46#define DEF_RWMIX_CYCLE (500)
47#define DEF_RWMIX_READ (50)
48#define DEF_NICE (0)
49
50static int def_timeout = DEF_TIMEOUT;
51
52static char fio_version_string[] = "fio 1.5";
53
54static char **ini_file;
55static int max_jobs = MAX_JOBS;
56
57struct thread_data def_thread;
58struct thread_data *threads = NULL;
59
60int rate_quit = 0;
61int write_lat_log = 0;
62int write_bw_log = 0;
63int exitall_on_terminate = 0;
64int terse_output = 0;
65unsigned long long mlock_size = 0;
66FILE *f_out = NULL;
67FILE *f_err = NULL;
68
69/*
70 * Return a free job structure.
71 */
72static struct thread_data *get_new_job(int global, struct thread_data *parent)
73{
74 struct thread_data *td;
75
76 if (global)
77 return &def_thread;
78 if (thread_number >= max_jobs)
79 return NULL;
80
81 td = &threads[thread_number++];
82 *td = *parent;
83 td->name[0] = '\0';
84
85 td->fd = -1;
86 td->thread_number = thread_number;
87 return td;
88}
89
90static void put_job(struct thread_data *td)
91{
92 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
93 thread_number--;
94}
95
96/*
97 * Adds a job to the list of things todo. Sanitizes the various options
98 * to make sure we don't have conflicts, and initializes various
99 * members of td.
100 */
101static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
102{
103 char *ddir_str[] = { "read", "write", "randread", "randwrite",
104 "rw", NULL, "randrw" };
105 struct stat sb;
106 int numjobs, ddir;
107
108#ifndef FIO_HAVE_LIBAIO
109 if (td->io_engine == FIO_LIBAIO) {
110 log_err("Linux libaio not available\n");
111 return 1;
112 }
113#endif
114#ifndef FIO_HAVE_POSIXAIO
115 if (td->io_engine == FIO_POSIXAIO) {
116 log_err("posix aio not available\n");
117 return 1;
118 }
119#endif
120
121 /*
122 * the def_thread is just for options, it's not a real job
123 */
124 if (td == &def_thread)
125 return 0;
126
127 if (td->io_engine & FIO_SYNCIO)
128 td->iodepth = 1;
129 else {
130 if (!td->iodepth)
131 td->iodepth = 1;
132 }
133
134 /*
135 * only really works for sequential io for now
136 */
137 if (td->zone_size && !td->sequential)
138 td->zone_size = 0;
139
140 /*
141 * Reads can do overwrites, we always need to pre-create the file
142 */
143 if (td_read(td) || td_rw(td))
144 td->overwrite = 1;
145
146 td->filetype = FIO_TYPE_FILE;
147 if (!stat(jobname, &sb)) {
148 if (S_ISBLK(sb.st_mode))
149 td->filetype = FIO_TYPE_BD;
150 else if (S_ISCHR(sb.st_mode))
151 td->filetype = FIO_TYPE_CHAR;
152 }
153
154 if (td->filetype == FIO_TYPE_FILE) {
155 char tmp[PATH_MAX];
156
157 if (td->directory && td->directory[0] != '\0')
158 sprintf(tmp, "%s/%s.%d", td->directory, jobname, td->thread_number);
159 else
160 sprintf(tmp, "%s.%d", jobname, td->thread_number);
161 td->file_name = strdup(tmp);
162 } else
163 td->file_name = strdup(jobname);
164
165 fio_sem_init(&td->mutex, 0);
166
167 td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
168 td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
169 td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
170
171 if (td->min_bs == -1U)
172 td->min_bs = td->bs;
173 if (td->max_bs == -1U)
174 td->max_bs = td->bs;
175 if (td_read(td) && !td_rw(td))
176 td->verify = 0;
177
178 if (td->stonewall && td->thread_number > 1)
179 groupid++;
180
181 td->groupid = groupid;
182
183 if (setup_rate(td))
184 goto err;
185
186 if (write_lat_log) {
187 setup_log(&td->slat_log);
188 setup_log(&td->clat_log);
189 }
190 if (write_bw_log)
191 setup_log(&td->bw_log);
192
193 if (td->name[0] == '\0')
194 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
195
196 ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
197
198 if (!terse_output) {
199 if (!job_add_num)
200 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_engine_name, td->iodepth);
201 else if (job_add_num == 1)
202 fprintf(f_out, "...\n");
203 }
204
205 /*
206 * recurse add identical jobs, clear numjobs and stonewall options
207 * as they don't apply to sub-jobs
208 */
209 numjobs = td->numjobs;
210 while (--numjobs) {
211 struct thread_data *td_new = get_new_job(0, td);
212
213 if (!td_new)
214 goto err;
215
216 td_new->numjobs = 1;
217 td_new->stonewall = 0;
218 job_add_num = numjobs - 1;
219
220 if (add_job(td_new, jobname, job_add_num))
221 goto err;
222 }
223 return 0;
224err:
225 put_job(td);
226 return -1;
227}
228
229/*
230 * Initialize the various random states we need (random io, block size ranges,
231 * read/write mix, etc).
232 */
233int init_random_state(struct thread_data *td)
234{
235 unsigned long seeds[4];
236 int fd, num_maps, blocks;
237
238 fd = open("/dev/urandom", O_RDONLY);
239 if (fd == -1) {
240 td_verror(td, errno);
241 return 1;
242 }
243
244 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
245 td_verror(td, EIO);
246 close(fd);
247 return 1;
248 }
249
250 close(fd);
251
252 os_random_seed(seeds[0], &td->bsrange_state);
253 os_random_seed(seeds[1], &td->verify_state);
254 os_random_seed(seeds[2], &td->rwmix_state);
255
256 if (td->sequential)
257 return 0;
258
259 if (td->rand_repeatable)
260 seeds[3] = DEF_RANDSEED;
261
262 blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
263 num_maps = blocks / BLOCKS_PER_MAP;
264 td->file_map = malloc(num_maps * sizeof(long));
265 td->num_maps = num_maps;
266 memset(td->file_map, 0, num_maps * sizeof(long));
267
268 os_random_seed(seeds[3], &td->random_state);
269 return 0;
270}
271
272static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
273{
274#ifdef FIO_HAVE_CPU_AFFINITY
275 unsigned int i;
276
277 CPU_ZERO(&cpumask);
278
279 for (i = 0; i < sizeof(int) * 8; i++) {
280 if ((1 << i) & cpu)
281 CPU_SET(i, &cpumask);
282 }
283#endif
284}
285
286static unsigned long get_mult_time(char c)
287{
288 switch (c) {
289 case 'm':
290 case 'M':
291 return 60;
292 case 'h':
293 case 'H':
294 return 60 * 60;
295 case 'd':
296 case 'D':
297 return 24 * 60 * 60;
298 default:
299 return 1;
300 }
301}
302
303static unsigned long get_mult_bytes(char c)
304{
305 switch (c) {
306 case 'k':
307 case 'K':
308 return 1024;
309 case 'm':
310 case 'M':
311 return 1024 * 1024;
312 case 'g':
313 case 'G':
314 return 1024 * 1024 * 1024;
315 default:
316 return 1;
317 }
318}
319
320/*
321 * convert string after '=' into decimal value, noting any size suffix
322 */
323static int str_to_decimal(char *p, unsigned long long *val, int kilo)
324{
325 char *str;
326 int len;
327
328 str = strchr(p, '=');
329 if (!str)
330 return 1;
331
332 str++;
333 len = strlen(str);
334
335 *val = strtoul(str, NULL, 10);
336 if (*val == ULONG_MAX && errno == ERANGE)
337 return 1;
338
339 if (kilo)
340 *val *= get_mult_bytes(str[len - 1]);
341 else
342 *val *= get_mult_time(str[len - 1]);
343 return 0;
344}
345
346static int check_str_bytes(char *p, char *name, unsigned long long *val)
347{
348 if (strncmp(p, name, strlen(name) - 1))
349 return 1;
350
351 return str_to_decimal(p, val, 1);
352}
353
354static int check_str_time(char *p, char *name, unsigned long long *val)
355{
356 if (strncmp(p, name, strlen(name) - 1))
357 return 1;
358
359 return str_to_decimal(p, val, 0);
360}
361
362static void strip_blank_front(char **p)
363{
364 char *s = *p;
365
366 while (isspace(*s))
367 s++;
368}
369
370static void strip_blank_end(char *p)
371{
372 char *s = p + strlen(p) - 1;
373
374 while (isspace(*s) || iscntrl(*s))
375 s--;
376
377 *(s + 1) = '\0';
378}
379
380typedef int (str_cb_fn)(struct thread_data *, char *);
381
382static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
383{
384 char *s;
385
386 if (strncmp(p, name, strlen(name)))
387 return 1;
388
389 s = strstr(p, name);
390 if (!s)
391 return 1;
392
393 s = strchr(s, '=');
394 if (!s)
395 return 1;
396
397 s++;
398 strip_blank_front(&s);
399 return cb(td, s);
400}
401
402static int check_strstore(char *p, char *name, char *dest)
403{
404 char *s;
405
406 if (strncmp(p, name, strlen(name)))
407 return 1;
408
409 s = strstr(p, name);
410 if (!s)
411 return 1;
412
413 s = strchr(p, '=');
414 if (!s)
415 return 1;
416
417 s++;
418 strip_blank_front(&s);
419
420 strcpy(dest, s);
421 return 0;
422}
423
424static int __check_range_bytes(char *str, unsigned long *val)
425{
426 char suffix;
427
428 if (sscanf(str, "%lu%c", val, &suffix) == 2) {
429 *val *= get_mult_bytes(suffix);
430 return 0;
431 }
432
433 if (sscanf(str, "%lu", val) == 1)
434 return 0;
435
436 return 1;
437}
438
439static int check_range_bytes(char *p, char *name, unsigned long *s,
440 unsigned long *e)
441{
442 char option[128];
443 char *str, *p1, *p2;
444
445 if (strncmp(p, name, strlen(name)))
446 return 1;
447
448 strcpy(option, p);
449 p = option;
450
451 str = strstr(p, name);
452 if (!str)
453 return 1;
454
455 p += strlen(name);
456
457 str = strchr(p, '=');
458 if (!str)
459 return 1;
460
461 /*
462 * 'p' now holds whatever is after the '=' sign
463 */
464 p1 = str + 1;
465
466 /*
467 * terminate p1 at the '-' sign
468 */
469 p = strchr(p1, '-');
470 if (!p)
471 return 1;
472
473 p2 = p + 1;
474 *p = '\0';
475
476 if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
477 return 0;
478
479 return 1;
480}
481
482static int check_int(char *p, char *name, unsigned int *val)
483{
484 char *str;
485
486 if (strncmp(p, name, strlen(name)))
487 return 1;
488
489 str = strstr(p, name);
490 if (!str)
491 return 1;
492
493 str = strchr(p, '=');
494 if (!str)
495 return 1;
496
497 str++;
498
499 if (sscanf(str, "%u", val) == 1)
500 return 0;
501
502 return 1;
503}
504
505static int check_strset(char *p, char *name)
506{
507 return strncmp(p, name, strlen(name));
508}
509
510static int is_empty_or_comment(char *line)
511{
512 unsigned int i;
513
514 for (i = 0; i < strlen(line); i++) {
515 if (line[i] == ';')
516 return 1;
517 if (!isspace(line[i]) && !iscntrl(line[i]))
518 return 0;
519 }
520
521 return 1;
522}
523
524static int str_rw_cb(struct thread_data *td, char *mem)
525{
526 if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
527 td->ddir = DDIR_READ;
528 td->sequential = 1;
529 return 0;
530 } else if (!strncmp(mem, "randread", 8)) {
531 td->ddir = DDIR_READ;
532 td->sequential = 0;
533 return 0;
534 } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
535 td->ddir = DDIR_WRITE;
536 td->sequential = 1;
537 return 0;
538 } else if (!strncmp(mem, "randwrite", 9)) {
539 td->ddir = DDIR_WRITE;
540 td->sequential = 0;
541 return 0;
542 } else if (!strncmp(mem, "rw", 2)) {
543 td->ddir = 0;
544 td->iomix = 1;
545 td->sequential = 1;
546 return 0;
547 } else if (!strncmp(mem, "randrw", 6)) {
548 td->ddir = 0;
549 td->iomix = 1;
550 td->sequential = 0;
551 return 0;
552 }
553
554 log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
555 return 1;
556}
557
558static int str_verify_cb(struct thread_data *td, char *mem)
559{
560 if (!strncmp(mem, "0", 1)) {
561 td->verify = VERIFY_NONE;
562 return 0;
563 } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
564 td->verify = VERIFY_MD5;
565 return 0;
566 } else if (!strncmp(mem, "crc32", 5)) {
567 td->verify = VERIFY_CRC32;
568 return 0;
569 }
570
571 log_err("fio: verify types: md5, crc32\n");
572 return 1;
573}
574
575static int str_mem_cb(struct thread_data *td, char *mem)
576{
577 if (!strncmp(mem, "malloc", 6)) {
578 td->mem_type = MEM_MALLOC;
579 return 0;
580 } else if (!strncmp(mem, "shm", 3)) {
581 td->mem_type = MEM_SHM;
582 return 0;
583 } else if (!strncmp(mem, "mmap", 4)) {
584 td->mem_type = MEM_MMAP;
585 return 0;
586 }
587
588 log_err("fio: mem type: malloc, shm, mmap\n");
589 return 1;
590}
591
592static int str_ioengine_cb(struct thread_data *td, char *str)
593{
594 if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
595 !strncmp(str, "libaio", 6)) {
596 strcpy(td->io_engine_name, "libaio");
597 td->io_engine = FIO_LIBAIO;
598 return 0;
599 } else if (!strncmp(str, "posixaio", 8)) {
600 strcpy(td->io_engine_name, "posixaio");
601 td->io_engine = FIO_POSIXAIO;
602 return 0;
603 } else if (!strncmp(str, "sync", 4)) {
604 strcpy(td->io_engine_name, "sync");
605 td->io_engine = FIO_SYNCIO;
606 return 0;
607 } else if (!strncmp(str, "mmap", 4)) {
608 strcpy(td->io_engine_name, "mmap");
609 td->io_engine = FIO_MMAPIO;
610 return 0;
611 } else if (!strncmp(str, "sgio", 4)) {
612 strcpy(td->io_engine_name, "sgio");
613 td->io_engine = FIO_SGIO;
614 return 0;
615 } else if (!strncmp(str, "splice", 6)) {
616 strcpy(td->io_engine_name, "splice");
617 td->io_engine = FIO_SPLICEIO;
618 return 0;
619 }
620
621 log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice\n");
622 return 1;
623}
624
625/*
626 * This is our [ini] type file parser.
627 */
628int parse_jobs_ini(char *file, int stonewall_flag)
629{
630 unsigned int prioclass, prio, cpu, global, il;
631 unsigned long long ull;
632 unsigned long ul1, ul2;
633 struct thread_data *td;
634 char *string, *name, *tmpbuf;
635 fpos_t off;
636 FILE *f;
637 char *p;
638 int ret = 0, stonewall;
639
640 f = fopen(file, "r");
641 if (!f) {
642 perror("fopen job file");
643 return 1;
644 }
645
646 string = malloc(4096);
647 name = malloc(256);
648 tmpbuf = malloc(4096);
649
650 stonewall = stonewall_flag;
651 while ((p = fgets(string, 4096, f)) != NULL) {
652 if (ret)
653 break;
654 if (is_empty_or_comment(p))
655 continue;
656 if (sscanf(p, "[%s]", name) != 1)
657 continue;
658
659 global = !strncmp(name, "global", 6);
660
661 name[strlen(name) - 1] = '\0';
662
663 td = get_new_job(global, &def_thread);
664 if (!td) {
665 ret = 1;
666 break;
667 }
668
669 /*
670 * Seperate multiple job files by a stonewall
671 */
672 if (!global && stonewall) {
673 td->stonewall = stonewall;
674 stonewall = 0;
675 }
676
677 fgetpos(f, &off);
678 while ((p = fgets(string, 4096, f)) != NULL) {
679 if (is_empty_or_comment(p))
680 continue;
681 if (strstr(p, "["))
682 break;
683 strip_blank_front(&p);
684 strip_blank_end(p);
685
686 if (!check_int(p, "prio", &prio)) {
687#ifndef FIO_HAVE_IOPRIO
688 log_err("io priorities not available\n");
689 ret = 1;
690 break;
691#endif
692 td->ioprio |= prio;
693 fgetpos(f, &off);
694 continue;
695 }
696 if (!check_int(p, "prioclass", &prioclass)) {
697#ifndef FIO_HAVE_IOPRIO
698 log_err("io priorities not available\n");
699 ret = 1;
700 break;
701#else
702 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
703 fgetpos(f, &off);
704 continue;
705#endif
706 }
707 if (!check_int(p, "direct", &il)) {
708 td->odirect = il;
709 fgetpos(f, &off);
710 continue;
711 }
712 if (!check_int(p, "rand_repeatable", &il)) {
713 td->rand_repeatable = il;
714 fgetpos(f, &off);
715 continue;
716 }
717 if (!check_int(p, "rate", &td->rate)) {
718 fgetpos(f, &off);
719 continue;
720 }
721 if (!check_int(p, "ratemin", &td->ratemin)) {
722 fgetpos(f, &off);
723 continue;
724 }
725 if (!check_int(p, "ratecycle", &td->ratecycle)) {
726 fgetpos(f, &off);
727 continue;
728 }
729 if (!check_int(p, "thinktime", &td->thinktime)) {
730 fgetpos(f, &off);
731 continue;
732 }
733 if (!check_int(p, "cpumask", &cpu)) {
734#ifndef FIO_HAVE_CPU_AFFINITY
735 log_err("cpu affinity not available\n");
736 ret = 1;
737 break;
738#endif
739 fill_cpu_mask(td->cpumask, cpu);
740 fgetpos(f, &off);
741 continue;
742 }
743 if (!check_int(p, "fsync", &td->fsync_blocks)) {
744 fgetpos(f, &off);
745 td->end_fsync = 1;
746 continue;
747 }
748 if (!check_int(p, "startdelay", &td->start_delay)) {
749 fgetpos(f, &off);
750 continue;
751 }
752 if (!check_str_time(p, "timeout", &ull)) {
753 td->timeout = ull;
754 fgetpos(f, &off);
755 continue;
756 }
757 if (!check_int(p, "invalidate", &il)) {
758 td->invalidate_cache = il;
759 fgetpos(f, &off);
760 continue;
761 }
762 if (!check_int(p, "iodepth", &td->iodepth)) {
763 fgetpos(f, &off);
764 continue;
765 }
766 if (!check_int(p, "sync", &il)) {
767 td->sync_io = il;
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", &il)) {
776 td->create_serialize = il;
777 fgetpos(f, &off);
778 continue;
779 }
780 if (!check_int(p, "create_fsync", &il)) {
781 td->create_fsync = il;
782 fgetpos(f, &off);
783 continue;
784 }
785 if (!check_int(p, "end_fsync", &il)) {
786 td->end_fsync = il;
787 fgetpos(f, &off);
788 continue;
789 }
790 if (!check_int(p, "loops", &td->loops)) {
791 fgetpos(f, &off);
792 continue;
793 }
794 if (!check_int(p, "numjobs", &td->numjobs)) {
795 fgetpos(f, &off);
796 continue;
797 }
798 if (!check_int(p, "overwrite", &il)) {
799 td->overwrite = il;
800 fgetpos(f, &off);
801 continue;
802 }
803 if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
804 fgetpos(f, &off);
805 continue;
806 }
807 if (!check_int(p, "rwmixread", &il)) {
808 if (il > 100)
809 il = 100;
810 td->rwmixread = il;
811 fgetpos(f, &off);
812 continue;
813 }
814 if (!check_int(p, "rwmixwrite", &il)) {
815 if (il > 100)
816 il = 100;
817 td->rwmixread = 100 - il;
818 fgetpos(f, &off);
819 continue;
820 }
821 if (!check_int(p, "nice", &td->nice)) {
822 fgetpos(f, &off);
823 continue;
824 }
825 if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
826 if (ul1 > ul2) {
827 td->max_bs = ul1;
828 td->min_bs = ul2;
829 } else {
830 td->max_bs = ul2;
831 td->min_bs = ul1;
832 }
833 fgetpos(f, &off);
834 continue;
835 }
836 if (!check_str_bytes(p, "bs", &ull)) {
837 td->bs = ull;
838 fgetpos(f, &off);
839 continue;
840 }
841 if (!check_str_bytes(p, "size", &td->file_size)) {
842 fgetpos(f, &off);
843 continue;
844 }
845 if (!check_str_bytes(p, "offset", &td->file_offset)) {
846 fgetpos(f, &off);
847 continue;
848 }
849 if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
850 fgetpos(f, &off);
851 continue;
852 }
853 if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
854 fgetpos(f, &off);
855 continue;
856 }
857 if (!check_str_bytes(p, "lockmem", &mlock_size)) {
858 fgetpos(f, &off);
859 continue;
860 }
861 if (!check_strstore(p, "directory", tmpbuf)) {
862 td->directory = strdup(tmpbuf);
863 fgetpos(f, &off);
864 continue;
865 }
866 if (!check_strstore(p, "name", tmpbuf)) {
867 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
868 fgetpos(f, &off);
869 continue;
870 }
871 if (!check_str(p, "mem", str_mem_cb, td)) {
872 fgetpos(f, &off);
873 continue;
874 }
875 if (!check_str(p, "verify", str_verify_cb, td)) {
876 fgetpos(f, &off);
877 continue;
878 }
879 if (!check_str(p, "rw", str_rw_cb, td)) {
880 fgetpos(f, &off);
881 continue;
882 }
883 if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
884 fgetpos(f, &off);
885 continue;
886 }
887 if (!check_strset(p, "create")) {
888 td->create_file = 1;
889 fgetpos(f, &off);
890 continue;
891 }
892 if (!check_strset(p, "exitall")) {
893 exitall_on_terminate = 1;
894 fgetpos(f, &off);
895 continue;
896 }
897 if (!check_strset(p, "stonewall")) {
898 td->stonewall = 1;
899 fgetpos(f, &off);
900 continue;
901 }
902 if (!check_strset(p, "thread")) {
903 td->use_thread = 1;
904 fgetpos(f, &off);
905 continue;
906 }
907 if (!check_strstore(p, "iolog", tmpbuf)) {
908 if (td->write_iolog) {
909 log_err("fio: read iolog overrides given write_iolog\n");
910 free(td->iolog_file);
911 td->write_iolog = 0;
912 }
913 td->iolog_file = strdup(tmpbuf);
914 td->read_iolog = 1;
915 fgetpos(f, &off);
916 continue;
917 }
918 if (!check_strstore(p, "write_iolog", tmpbuf)) {
919 if (!td->read_iolog) {
920 td->iolog_file = strdup(tmpbuf);
921 td->write_iolog = 1;
922 } else
923 log_err("fio: read iolog overrides given write_iolog\n");
924 fgetpos(f, &off);
925 continue;
926 }
927 if (!check_strstore(p, "exec_prerun", tmpbuf)) {
928 td->exec_prerun = strdup(tmpbuf);
929 fgetpos(f, &off);
930 continue;
931 }
932 if (!check_strstore(p, "exec_postrun", tmpbuf)) {
933 td->exec_postrun = strdup(tmpbuf);
934 fgetpos(f, &off);
935 continue;
936 }
937 if (!check_strstore(p, "ioscheduler", tmpbuf)) {
938#ifndef FIO_HAVE_IOSCHED_SWITCH
939 log_err("io scheduler switching not available\n");
940 ret = 1;
941 break;
942#else
943 td->ioscheduler = strdup(tmpbuf);
944 fgetpos(f, &off);
945 continue;
946#endif
947 }
948
949 /*
950 * Don't break here, continue parsing options so we
951 * dump all the bad ones. Makes trial/error fixups
952 * easier on the user.
953 */
954 printf("Client%d: bad option %s\n",td->thread_number,p);
955 ret = 1;
956 }
957
958 if (!ret) {
959 fsetpos(f, &off);
960 ret = add_job(td, name, 0);
961 }
962 if (ret)
963 break;
964 }
965
966 free(string);
967 free(name);
968 free(tmpbuf);
969 fclose(f);
970 return ret;
971}
972
973static int fill_def_thread(void)
974{
975 memset(&def_thread, 0, sizeof(def_thread));
976
977 if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
978 perror("sched_getaffinity");
979 return 1;
980 }
981
982 /*
983 * fill globals
984 */
985 def_thread.ddir = DDIR_READ;
986 def_thread.iomix = 0;
987 def_thread.bs = DEF_BS;
988 def_thread.min_bs = -1;
989 def_thread.max_bs = -1;
990 def_thread.io_engine = DEF_IO_ENGINE;
991 strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
992 def_thread.odirect = DEF_ODIRECT;
993 def_thread.ratecycle = DEF_RATE_CYCLE;
994 def_thread.sequential = DEF_SEQUENTIAL;
995 def_thread.timeout = def_timeout;
996 def_thread.create_file = DEF_CREATE;
997 def_thread.overwrite = DEF_OVERWRITE;
998 def_thread.invalidate_cache = DEF_INVALIDATE;
999 def_thread.sync_io = DEF_SYNCIO;
1000 def_thread.mem_type = MEM_MALLOC;
1001 def_thread.bw_avg_time = DEF_BWAVGTIME;
1002 def_thread.create_serialize = DEF_CREATE_SER;
1003 def_thread.create_fsync = DEF_CREATE_FSYNC;
1004 def_thread.loops = DEF_LOOPS;
1005 def_thread.verify = DEF_VERIFY;
1006 def_thread.stonewall = DEF_STONEWALL;
1007 def_thread.numjobs = DEF_NUMJOBS;
1008 def_thread.use_thread = DEF_USE_THREAD;
1009 def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1010 def_thread.rwmixread = DEF_RWMIX_READ;
1011 def_thread.nice = DEF_NICE;
1012 def_thread.rand_repeatable = DEF_RAND_REPEAT;
1013#ifdef FIO_HAVE_DISK_UTIL
1014 def_thread.do_disk_util = 1;
1015#endif
1016
1017 return 0;
1018}
1019
1020static void usage(char *name)
1021{
1022 printf("%s\n", fio_version_string);
1023 printf("\t-o Write output to file\n");
1024 printf("\t-t Runtime in seconds\n");
1025 printf("\t-l Generate per-job latency logs\n");
1026 printf("\t-w Generate per-job bandwidth logs\n");
1027 printf("\t-m Minimal (terse) output\n");
1028 printf("\t-v Print version info and exit\n");
1029}
1030
1031static int parse_cmd_line(int argc, char *argv[])
1032{
1033 int c, idx = 1, ini_idx = 0;
1034
1035 while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1036 switch (c) {
1037 case 't':
1038 def_timeout = atoi(optarg);
1039 idx = optind;
1040 break;
1041 case 'l':
1042 write_lat_log = 1;
1043 idx = optind;
1044 break;
1045 case 'w':
1046 write_bw_log = 1;
1047 idx = optind;
1048 break;
1049 case 'o':
1050 f_out = fopen(optarg, "w+");
1051 if (!f_out) {
1052 perror("fopen output");
1053 exit(1);
1054 }
1055 f_err = f_out;
1056 idx = optind;
1057 break;
1058 case 'm':
1059 terse_output = 1;
1060 idx = optind;
1061 break;
1062 case 'h':
1063 usage(argv[0]);
1064 exit(0);
1065 case 'v':
1066 printf("%s\n", fio_version_string);
1067 exit(0);
1068 }
1069 }
1070
1071 while (idx < argc) {
1072 ini_idx++;
1073 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1074 ini_file[ini_idx - 1] = strdup(argv[idx]);
1075 idx++;
1076 }
1077
1078 if (!f_out) {
1079 f_out = stdout;
1080 f_err = stderr;
1081 }
1082
1083 return ini_idx;
1084}
1085
1086static void free_shm(void)
1087{
1088 struct shmid_ds sbuf;
1089
1090 if (threads) {
1091 shmdt((void *) threads);
1092 threads = NULL;
1093 shmctl(shm_id, IPC_RMID, &sbuf);
1094 }
1095}
1096
1097/*
1098 * The thread area is shared between the main process and the job
1099 * threads/processes. So setup a shared memory segment that will hold
1100 * all the job info.
1101 */
1102static int setup_thread_area(void)
1103{
1104 /*
1105 * 1024 is too much on some machines, scale max_jobs if
1106 * we get a failure that looks like too large a shm segment
1107 */
1108 do {
1109 size_t size = max_jobs * sizeof(struct thread_data);
1110
1111 shm_id = shmget(0, size, IPC_CREAT | 0600);
1112 if (shm_id != -1)
1113 break;
1114 if (errno != EINVAL) {
1115 perror("shmget");
1116 break;
1117 }
1118
1119 max_jobs >>= 1;
1120 } while (max_jobs);
1121
1122 if (shm_id == -1)
1123 return 1;
1124
1125 threads = shmat(shm_id, NULL, 0);
1126 if (threads == (void *) -1) {
1127 perror("shmat");
1128 return 1;
1129 }
1130
1131 atexit(free_shm);
1132 return 0;
1133}
1134
1135int parse_options(int argc, char *argv[])
1136{
1137 int job_files, i;
1138
1139 if (setup_thread_area())
1140 return 1;
1141 if (fill_def_thread())
1142 return 1;
1143
1144 job_files = parse_cmd_line(argc, argv);
1145 if (!job_files) {
1146 log_err("Need job file(s)\n");
1147 usage(argv[0]);
1148 return 1;
1149 }
1150
1151 for (i = 0; i < job_files; i++) {
1152 if (fill_def_thread())
1153 return 1;
1154 if (parse_jobs_ini(ini_file[i], i))
1155 return 1;
1156 free(ini_file[i]);
1157 }
1158
1159 free(ini_file);
1160 return 0;
1161}
fio - Flexible IO Tester