20dd625dfe3bb1a77b1209916f7b7dc754a19a37
[fio.git] / init.c
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 #define DEF_NR_FILES            (1)
50
51 static int def_timeout = DEF_TIMEOUT;
52
53 static char fio_version_string[] = "fio 1.5";
54
55 static char **ini_file;
56 static int max_jobs = MAX_JOBS;
57
58 struct thread_data def_thread;
59 struct thread_data *threads = NULL;
60
61 int rate_quit = 0;
62 int write_lat_log = 0;
63 int write_bw_log = 0;
64 int exitall_on_terminate = 0;
65 int terse_output = 0;
66 unsigned long long mlock_size = 0;
67 FILE *f_out = NULL;
68 FILE *f_err = NULL;
69
70 /*
71  * Return a free job structure.
72  */
73 static struct thread_data *get_new_job(int global, struct thread_data *parent)
74 {
75         struct thread_data *td;
76
77         if (global)
78                 return &def_thread;
79         if (thread_number >= max_jobs)
80                 return NULL;
81
82         td = &threads[thread_number++];
83         *td = *parent;
84         td->name[0] = '\0';
85
86         td->thread_number = thread_number;
87         return td;
88 }
89
90 static 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  */
101 static 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, i;
107         struct fio_file *f;
108
109 #ifndef FIO_HAVE_LIBAIO
110         if (td->io_engine == FIO_LIBAIO) {
111                 log_err("Linux libaio not available\n");
112                 return 1;
113         }
114 #endif
115 #ifndef FIO_HAVE_POSIXAIO
116         if (td->io_engine == FIO_POSIXAIO) {
117                 log_err("posix aio not available\n");
118                 return 1;
119         }
120 #endif
121
122         /*
123          * the def_thread is just for options, it's not a real job
124          */
125         if (td == &def_thread)
126                 return 0;
127
128         /*
129          * Set default io engine, if none set
130          */
131         if (!td->io_ops) {
132                 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
133                 if (!td->io_ops) {
134                         log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
135                         return 1;
136                 }
137         }
138
139         if (td->io_ops->flags & FIO_SYNCIO)
140                 td->iodepth = 1;
141         else {
142                 if (!td->iodepth)
143                         td->iodepth = 1;
144         }
145
146         /*
147          * only really works for sequential io for now, and with 1 file
148          */
149         if (td->zone_size && !td->sequential && td->nr_files == 1)
150                 td->zone_size = 0;
151
152         /*
153          * Reads can do overwrites, we always need to pre-create the file
154          */
155         if (td_read(td) || td_rw(td))
156                 td->overwrite = 1;
157
158         td->filetype = FIO_TYPE_FILE;
159         if (!stat(jobname, &sb)) {
160                 if (S_ISBLK(sb.st_mode))
161                         td->filetype = FIO_TYPE_BD;
162                 else if (S_ISCHR(sb.st_mode))
163                         td->filetype = FIO_TYPE_CHAR;
164         }
165
166         if (td->odirect)
167                 td->io_ops->flags |= FIO_RAWIO;
168
169         if (td->filetype == FIO_TYPE_FILE) {
170                 char tmp[PATH_MAX];
171                 int len = 0;
172                 int i;
173
174                 if (td->directory && td->directory[0] != '\0')
175                         sprintf(tmp, "%s/", td->directory);
176
177                 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
178
179                 for_each_file(td, f, i) {
180                         memset(f, 0, sizeof(*f));
181                         f->fd = -1;
182                         f->fileno = i;
183
184                         sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
185                         f->file_name = strdup(tmp);
186                 }
187         } else {
188                 td->nr_files = 1;
189                 td->files = malloc(sizeof(struct fio_file));
190                 f = &td->files[0];
191
192                 memset(f, 0, sizeof(*f));
193                 f->fd = -1;
194                 f->file_name = strdup(jobname);
195         }
196
197         for_each_file(td, f, i) {
198                 f->file_size = td->total_file_size / td->nr_files;
199                 f->file_offset = td->start_offset;
200         }
201                 
202         fio_sem_init(&td->mutex, 0);
203
204         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
205         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
206         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
207
208         if (td->min_bs == -1U)
209                 td->min_bs = td->bs;
210         if (td->max_bs == -1U)
211                 td->max_bs = td->bs;
212         if (td_read(td) && !td_rw(td))
213                 td->verify = 0;
214
215         if (td->stonewall && td->thread_number > 1)
216                 groupid++;
217
218         td->groupid = groupid;
219
220         if (setup_rate(td))
221                 goto err;
222
223         if (write_lat_log) {
224                 setup_log(&td->slat_log);
225                 setup_log(&td->clat_log);
226         }
227         if (write_bw_log)
228                 setup_log(&td->bw_log);
229
230         if (td->name[0] == '\0')
231                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
232
233         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
234
235         if (!terse_output) {
236                 if (!job_add_num) {
237                         if (td->io_ops->flags & FIO_CPUIO)
238                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
239                         else
240                                 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);
241                 } else if (job_add_num == 1)
242                         fprintf(f_out, "...\n");
243         }
244
245         /*
246          * recurse add identical jobs, clear numjobs and stonewall options
247          * as they don't apply to sub-jobs
248          */
249         numjobs = td->numjobs;
250         while (--numjobs) {
251                 struct thread_data *td_new = get_new_job(0, td);
252
253                 if (!td_new)
254                         goto err;
255
256                 td_new->numjobs = 1;
257                 td_new->stonewall = 0;
258                 job_add_num = numjobs - 1;
259
260                 if (add_job(td_new, jobname, job_add_num))
261                         goto err;
262         }
263         return 0;
264 err:
265         put_job(td);
266         return -1;
267 }
268
269 /*
270  * Initialize the various random states we need (random io, block size ranges,
271  * read/write mix, etc).
272  */
273 int init_random_state(struct thread_data *td)
274 {
275         unsigned long seeds[4];
276         int fd, num_maps, blocks, i;
277
278         fd = open("/dev/urandom", O_RDONLY);
279         if (fd == -1) {
280                 td_verror(td, errno);
281                 return 1;
282         }
283
284         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
285                 td_verror(td, EIO);
286                 close(fd);
287                 return 1;
288         }
289
290         close(fd);
291
292         os_random_seed(seeds[0], &td->bsrange_state);
293         os_random_seed(seeds[1], &td->verify_state);
294         os_random_seed(seeds[2], &td->rwmix_state);
295
296         if (td->sequential)
297                 return 0;
298
299         if (td->rand_repeatable)
300                 seeds[3] = DEF_RANDSEED;
301
302         for (i = 0; i < td->nr_files; i++) {
303                 struct fio_file *f = &td->files[i];
304
305                 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
306                 num_maps = blocks / BLOCKS_PER_MAP;
307                 f->file_map = malloc(num_maps * sizeof(long));
308                 f->num_maps = num_maps;
309                 memset(f->file_map, 0, num_maps * sizeof(long));
310         }
311
312         os_random_seed(seeds[3], &td->random_state);
313         return 0;
314 }
315
316 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
317 {
318 #ifdef FIO_HAVE_CPU_AFFINITY
319         unsigned int i;
320
321         CPU_ZERO(&cpumask);
322
323         for (i = 0; i < sizeof(int) * 8; i++) {
324                 if ((1 << i) & cpu)
325                         CPU_SET(i, &cpumask);
326         }
327 #endif
328 }
329
330 static unsigned long get_mult_time(char c)
331 {
332         switch (c) {
333                 case 'm':
334                 case 'M':
335                         return 60;
336                 case 'h':
337                 case 'H':
338                         return 60 * 60;
339                 case 'd':
340                 case 'D':
341                         return 24 * 60 * 60;
342                 default:
343                         return 1;
344         }
345 }
346
347 static unsigned long get_mult_bytes(char c)
348 {
349         switch (c) {
350                 case 'k':
351                 case 'K':
352                         return 1024;
353                 case 'm':
354                 case 'M':
355                         return 1024 * 1024;
356                 case 'g':
357                 case 'G':
358                         return 1024 * 1024 * 1024;
359                 default:
360                         return 1;
361         }
362 }
363
364 /*
365  * convert string after '=' into decimal value, noting any size suffix
366  */
367 static int str_to_decimal(char *p, unsigned long long *val, int kilo)
368 {
369         char *str;
370         int len;
371
372         str = strchr(p, '=');
373         if (!str)
374                 return 1;
375
376         str++;
377         len = strlen(str);
378
379         *val = strtoul(str, NULL, 10);
380         if (*val == ULONG_MAX && errno == ERANGE)
381                 return 1;
382
383         if (kilo)
384                 *val *= get_mult_bytes(str[len - 1]);
385         else
386                 *val *= get_mult_time(str[len - 1]);
387         return 0;
388 }
389
390 static int check_str_bytes(char *p, char *name, unsigned long long *val)
391 {
392         if (strncmp(p, name, strlen(name) - 1))
393                 return 1;
394
395         return str_to_decimal(p, val, 1);
396 }
397
398 static int check_str_time(char *p, char *name, unsigned long long *val)
399 {
400         if (strncmp(p, name, strlen(name) - 1))
401                 return 1;
402
403         return str_to_decimal(p, val, 0);
404 }
405
406 static void strip_blank_front(char **p)
407 {
408         char *s = *p;
409
410         while (isspace(*s))
411                 s++;
412 }
413
414 static void strip_blank_end(char *p)
415 {
416         char *s = p + strlen(p) - 1;
417
418         while (isspace(*s) || iscntrl(*s))
419                 s--;
420
421         *(s + 1) = '\0';
422 }
423
424 typedef int (str_cb_fn)(struct thread_data *, char *);
425
426 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
427 {
428         char *s;
429
430         if (strncmp(p, name, strlen(name)))
431                 return 1;
432
433         s = strstr(p, name);
434         if (!s)
435                 return 1;
436
437         s = strchr(s, '=');
438         if (!s)
439                 return 1;
440
441         s++;
442         strip_blank_front(&s);
443         return cb(td, s);
444 }
445
446 static int check_strstore(char *p, char *name, char *dest)
447 {
448         char *s;
449
450         if (strncmp(p, name, strlen(name)))
451                 return 1;
452
453         s = strstr(p, name);
454         if (!s)
455                 return 1;
456
457         s = strchr(p, '=');
458         if (!s)
459                 return 1;
460
461         s++;
462         strip_blank_front(&s);
463
464         strcpy(dest, s);
465         return 0;
466 }
467
468 static int __check_range_bytes(char *str, unsigned long *val)
469 {
470         char suffix;
471
472         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
473                 *val *= get_mult_bytes(suffix);
474                 return 0;
475         }
476
477         if (sscanf(str, "%lu", val) == 1)
478                 return 0;
479
480         return 1;
481 }
482
483 static int check_range_bytes(char *p, char *name, unsigned long *s,
484                              unsigned long *e)
485 {
486         char option[128];
487         char *str, *p1, *p2;
488
489         if (strncmp(p, name, strlen(name)))
490                 return 1;
491
492         strcpy(option, p);
493         p = option;
494
495         str = strstr(p, name);
496         if (!str)
497                 return 1;
498
499         p += strlen(name);
500
501         str = strchr(p, '=');
502         if (!str)
503                 return 1;
504
505         /*
506          * 'p' now holds whatever is after the '=' sign
507          */
508         p1 = str + 1;
509
510         /*
511          * terminate p1 at the '-' sign
512          */
513         p = strchr(p1, '-');
514         if (!p)
515                 return 1;
516
517         p2 = p + 1;
518         *p = '\0';
519
520         if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
521                 return 0;
522
523         return 1;
524 }
525
526 static int check_int(char *p, char *name, unsigned int *val)
527 {
528         char *str;
529
530         if (strncmp(p, name, strlen(name)))
531                 return 1;
532
533         str = strstr(p, name);
534         if (!str)
535                 return 1;
536
537         str = strchr(p, '=');
538         if (!str)
539                 return 1;
540
541         str++;
542
543         if (sscanf(str, "%u", val) == 1)
544                 return 0;
545
546         return 1;
547 }
548
549 static int check_strset(char *p, char *name)
550 {
551         return strncmp(p, name, strlen(name));
552 }
553
554 static int is_empty_or_comment(char *line)
555 {
556         unsigned int i;
557
558         for (i = 0; i < strlen(line); i++) {
559                 if (line[i] == ';')
560                         return 1;
561                 if (!isspace(line[i]) && !iscntrl(line[i]))
562                         return 0;
563         }
564
565         return 1;
566 }
567
568 static int str_rw_cb(struct thread_data *td, char *mem)
569 {
570         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
571                 td->ddir = DDIR_READ;
572                 td->sequential = 1;
573                 return 0;
574         } else if (!strncmp(mem, "randread", 8)) {
575                 td->ddir = DDIR_READ;
576                 td->sequential = 0;
577                 return 0;
578         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
579                 td->ddir = DDIR_WRITE;
580                 td->sequential = 1;
581                 return 0;
582         } else if (!strncmp(mem, "randwrite", 9)) {
583                 td->ddir = DDIR_WRITE;
584                 td->sequential = 0;
585                 return 0;
586         } else if (!strncmp(mem, "rw", 2)) {
587                 td->ddir = 0;
588                 td->iomix = 1;
589                 td->sequential = 1;
590                 return 0;
591         } else if (!strncmp(mem, "randrw", 6)) {
592                 td->ddir = 0;
593                 td->iomix = 1;
594                 td->sequential = 0;
595                 return 0;
596         }
597
598         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
599         return 1;
600 }
601
602 static int str_verify_cb(struct thread_data *td, char *mem)
603 {
604         if (!strncmp(mem, "0", 1)) {
605                 td->verify = VERIFY_NONE;
606                 return 0;
607         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
608                 td->verify = VERIFY_MD5;
609                 return 0;
610         } else if (!strncmp(mem, "crc32", 5)) {
611                 td->verify = VERIFY_CRC32;
612                 return 0;
613         }
614
615         log_err("fio: verify types: md5, crc32\n");
616         return 1;
617 }
618
619 static int str_mem_cb(struct thread_data *td, char *mem)
620 {
621         if (!strncmp(mem, "malloc", 6)) {
622                 td->mem_type = MEM_MALLOC;
623                 return 0;
624         } else if (!strncmp(mem, "shm", 3)) {
625                 td->mem_type = MEM_SHM;
626                 return 0;
627         } else if (!strncmp(mem, "mmap", 4)) {
628                 td->mem_type = MEM_MMAP;
629                 return 0;
630         }
631
632         log_err("fio: mem type: malloc, shm, mmap\n");
633         return 1;
634 }
635
636 static int str_ioengine_cb(struct thread_data *td, char *str)
637 {
638         td->io_ops = load_ioengine(td, str);
639         if (td->io_ops)
640                 return 0;
641
642         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
643         return 1;
644 }
645
646 /*
647  * This is our [ini] type file parser.
648  */
649 int parse_jobs_ini(char *file, int stonewall_flag)
650 {
651         unsigned int prioclass, prio, cpu, global, il;
652         unsigned long long ull;
653         unsigned long ul1, ul2;
654         struct thread_data *td;
655         char *string, *name, *tmpbuf;
656         fpos_t off;
657         FILE *f;
658         char *p;
659         int ret = 0, stonewall;
660
661         f = fopen(file, "r");
662         if (!f) {
663                 perror("fopen job file");
664                 return 1;
665         }
666
667         string = malloc(4096);
668         name = malloc(256);
669         tmpbuf = malloc(4096);
670
671         stonewall = stonewall_flag;
672         while ((p = fgets(string, 4096, f)) != NULL) {
673                 if (ret)
674                         break;
675                 if (is_empty_or_comment(p))
676                         continue;
677                 if (sscanf(p, "[%s]", name) != 1)
678                         continue;
679
680                 global = !strncmp(name, "global", 6);
681
682                 name[strlen(name) - 1] = '\0';
683
684                 td = get_new_job(global, &def_thread);
685                 if (!td) {
686                         ret = 1;
687                         break;
688                 }
689
690                 /*
691                  * Seperate multiple job files by a stonewall
692                  */
693                 if (!global && stonewall) {
694                         td->stonewall = stonewall;
695                         stonewall = 0;
696                 }
697
698                 fgetpos(f, &off);
699                 while ((p = fgets(string, 4096, f)) != NULL) {
700                         if (is_empty_or_comment(p))
701                                 continue;
702                         if (strstr(p, "["))
703                                 break;
704                         strip_blank_front(&p);
705                         strip_blank_end(p);
706
707                         if (!check_int(p, "prio", &prio)) {
708 #ifndef FIO_HAVE_IOPRIO
709                                 log_err("io priorities not available\n");
710                                 ret = 1;
711                                 break;
712 #endif
713                                 td->ioprio |= prio;
714                                 fgetpos(f, &off);
715                                 continue;
716                         }
717                         if (!check_int(p, "prioclass", &prioclass)) {
718 #ifndef FIO_HAVE_IOPRIO
719                                 log_err("io priorities not available\n");
720                                 ret = 1;
721                                 break;
722 #else
723                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
724                                 fgetpos(f, &off);
725                                 continue;
726 #endif
727                         }
728                         if (!check_int(p, "direct", &il)) {
729                                 td->odirect = il;
730                                 fgetpos(f, &off);
731                                 continue;
732                         }
733                         if (!check_int(p, "rand_repeatable", &il)) {
734                                 td->rand_repeatable = il;
735                                 fgetpos(f, &off);
736                                 continue;
737                         }
738                         if (!check_int(p, "rate", &td->rate)) {
739                                 fgetpos(f, &off);
740                                 continue;
741                         }
742                         if (!check_int(p, "ratemin", &td->ratemin)) {
743                                 fgetpos(f, &off);
744                                 continue;
745                         }
746                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
747                                 fgetpos(f, &off);
748                                 continue;
749                         }
750                         if (!check_int(p, "cpuload", &td->cpuload)) {
751                                 fgetpos(f, &off);
752                                 continue;
753                         }
754                         if (!check_int(p, "cpuchunks", &td->cpucycle)) {
755                                 fgetpos(f, &off);
756                                 continue;
757                         }
758                         if (!check_int(p, "thinktime", &td->thinktime)) {
759                                 fgetpos(f, &off);
760                                 continue;
761                         }
762                         if (!check_int(p, "cpumask", &cpu)) {
763 #ifndef FIO_HAVE_CPU_AFFINITY
764                                 log_err("cpu affinity not available\n");
765                                 ret = 1;
766                                 break;
767 #endif
768                                 fill_cpu_mask(td->cpumask, cpu);
769                                 fgetpos(f, &off);
770                                 continue;
771                         }
772                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
773                                 fgetpos(f, &off);
774                                 td->end_fsync = 1;
775                                 continue;
776                         }
777                         if (!check_int(p, "startdelay", &td->start_delay)) {
778                                 fgetpos(f, &off);
779                                 continue;
780                         }
781                         if (!check_str_time(p, "timeout", &ull)) {
782                                 td->timeout = ull;
783                                 fgetpos(f, &off);
784                                 continue;
785                         }
786                         if (!check_int(p, "invalidate", &il)) {
787                                 td->invalidate_cache = il;
788                                 fgetpos(f, &off);
789                                 continue;
790                         }
791                         if (!check_int(p, "iodepth", &td->iodepth)) {
792                                 fgetpos(f, &off);
793                                 continue;
794                         }
795                         if (!check_int(p, "sync", &il)) {
796                                 td->sync_io = il;
797                                 fgetpos(f, &off);
798                                 continue;
799                         }
800                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
801                                 fgetpos(f, &off);
802                                 continue;
803                         }
804                         if (!check_int(p, "create_serialize", &il)) {
805                                 td->create_serialize = il;
806                                 fgetpos(f, &off);
807                                 continue;
808                         }
809                         if (!check_int(p, "create_fsync", &il)) {
810                                 td->create_fsync = il;
811                                 fgetpos(f, &off);
812                                 continue;
813                         }
814                         if (!check_int(p, "end_fsync", &il)) {
815                                 td->end_fsync = il;
816                                 fgetpos(f, &off);
817                                 continue;
818                         }
819                         if (!check_int(p, "loops", &td->loops)) {
820                                 fgetpos(f, &off);
821                                 continue;
822                         }
823                         if (!check_int(p, "numjobs", &td->numjobs)) {
824                                 fgetpos(f, &off);
825                                 continue;
826                         }
827                         if (!check_int(p, "overwrite", &il)) {
828                                 td->overwrite = il;
829                                 fgetpos(f, &off);
830                                 continue;
831                         }
832                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
833                                 fgetpos(f, &off);
834                                 continue;
835                         }
836                         if (!check_int(p, "rwmixread", &il)) {
837                                 if (il > 100)
838                                         il = 100;
839                                 td->rwmixread = il;
840                                 fgetpos(f, &off);
841                                 continue;
842                         }
843                         if (!check_int(p, "rwmixwrite", &il)) {
844                                 if (il > 100)
845                                         il = 100;
846                                 td->rwmixread = 100 - il;
847                                 fgetpos(f, &off);
848                                 continue;
849                         }
850                         if (!check_int(p, "nice", &td->nice)) {
851                                 fgetpos(f, &off);
852                                 continue;
853                         }
854                         if (!check_int(p, "nrfiles", &td->nr_files)) {
855                                 fgetpos(f, &off);
856                                 continue;
857                         }
858                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
859                                 if (ul1 > ul2) {
860                                         td->max_bs = ul1;
861                                         td->min_bs = ul2;
862                                 } else {
863                                         td->max_bs = ul2;
864                                         td->min_bs = ul1;
865                                 }
866                                 fgetpos(f, &off);
867                                 continue;
868                         }
869                         if (!check_str_bytes(p, "bs", &ull)) {
870                                 td->bs = ull;
871                                 fgetpos(f, &off);
872                                 continue;
873                         }
874                         if (!check_str_bytes(p, "size", &td->total_file_size)) {
875                                 fgetpos(f, &off);
876                                 continue;
877                         }
878                         if (!check_str_bytes(p, "offset", &td->start_offset)) {
879                                 fgetpos(f, &off);
880                                 continue;
881                         }
882                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
883                                 fgetpos(f, &off);
884                                 continue;
885                         }
886                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
887                                 fgetpos(f, &off);
888                                 continue;
889                         }
890                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
891                                 fgetpos(f, &off);
892                                 continue;
893                         }
894                         if (!check_strstore(p, "directory", tmpbuf)) {
895                                 td->directory = strdup(tmpbuf);
896                                 fgetpos(f, &off);
897                                 continue;
898                         }
899                         if (!check_strstore(p, "name", tmpbuf)) {
900                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
901                                 fgetpos(f, &off);
902                                 continue;
903                         }
904                         if (!check_str(p, "mem", str_mem_cb, td)) {
905                                 fgetpos(f, &off);
906                                 continue;
907                         }
908                         if (!check_str(p, "verify", str_verify_cb, td)) {
909                                 fgetpos(f, &off);
910                                 continue;
911                         }
912                         if (!check_str(p, "rw", str_rw_cb, td)) {
913                                 fgetpos(f, &off);
914                                 continue;
915                         }
916                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
917                                 fgetpos(f, &off);
918                                 continue;
919                         }
920                         if (!check_strset(p, "create")) {
921                                 td->create_file = 1;
922                                 fgetpos(f, &off);
923                                 continue;
924                         }
925                         if (!check_strset(p, "exitall")) {
926                                 exitall_on_terminate = 1;
927                                 fgetpos(f, &off);
928                                 continue;
929                         }
930                         if (!check_strset(p, "stonewall")) {
931                                 td->stonewall = 1;
932                                 fgetpos(f, &off);
933                                 continue;
934                         }
935                         if (!check_strset(p, "thread")) {
936                                 td->use_thread = 1;
937                                 fgetpos(f, &off);
938                                 continue;
939                         }
940                         if (!check_strstore(p, "iolog", tmpbuf)) {
941                                 if (td->write_iolog) {
942                                         log_err("fio: read iolog overrides given write_iolog\n");
943                                         free(td->iolog_file);
944                                         td->write_iolog = 0;
945                                 }
946                                 td->iolog_file = strdup(tmpbuf);
947                                 td->read_iolog = 1;
948                                 fgetpos(f, &off);
949                                 continue;
950                         }
951                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
952                                 if (!td->read_iolog) {
953                                         td->iolog_file = strdup(tmpbuf);
954                                         td->write_iolog = 1;
955                                 } else
956                                         log_err("fio: read iolog overrides given write_iolog\n");
957                                 fgetpos(f, &off);
958                                 continue;
959                         }
960                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
961                                 td->exec_prerun = strdup(tmpbuf);
962                                 fgetpos(f, &off);
963                                 continue;
964                         }
965                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
966                                 td->exec_postrun = strdup(tmpbuf);
967                                 fgetpos(f, &off);
968                                 continue;
969                         }
970                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
971 #ifndef FIO_HAVE_IOSCHED_SWITCH
972                                 log_err("io scheduler switching not available\n");
973                                 ret = 1;
974                                 break;
975 #else
976                                 td->ioscheduler = strdup(tmpbuf);
977                                 fgetpos(f, &off);
978                                 continue;
979 #endif
980                         }
981
982                         /*
983                          * Don't break here, continue parsing options so we
984                          * dump all the bad ones. Makes trial/error fixups
985                          * easier on the user.
986                          */
987                         printf("Client%d: bad option %s\n",td->thread_number,p);
988                         ret = 1;
989                 }
990
991                 if (!ret) {
992                         fsetpos(f, &off);
993                         ret = add_job(td, name, 0);
994                 }
995                 if (ret)
996                         break;
997         }
998
999         free(string);
1000         free(name);
1001         free(tmpbuf);
1002         fclose(f);
1003         return ret;
1004 }
1005
1006 static int fill_def_thread(void)
1007 {
1008         memset(&def_thread, 0, sizeof(def_thread));
1009
1010         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1011                 perror("sched_getaffinity");
1012                 return 1;
1013         }
1014
1015         /*
1016          * fill globals
1017          */
1018         def_thread.ddir = DDIR_READ;
1019         def_thread.iomix = 0;
1020         def_thread.bs = DEF_BS;
1021         def_thread.min_bs = -1;
1022         def_thread.max_bs = -1;
1023         def_thread.odirect = DEF_ODIRECT;
1024         def_thread.ratecycle = DEF_RATE_CYCLE;
1025         def_thread.sequential = DEF_SEQUENTIAL;
1026         def_thread.timeout = def_timeout;
1027         def_thread.create_file = DEF_CREATE;
1028         def_thread.overwrite = DEF_OVERWRITE;
1029         def_thread.invalidate_cache = DEF_INVALIDATE;
1030         def_thread.sync_io = DEF_SYNCIO;
1031         def_thread.mem_type = MEM_MALLOC;
1032         def_thread.bw_avg_time = DEF_BWAVGTIME;
1033         def_thread.create_serialize = DEF_CREATE_SER;
1034         def_thread.create_fsync = DEF_CREATE_FSYNC;
1035         def_thread.loops = DEF_LOOPS;
1036         def_thread.verify = DEF_VERIFY;
1037         def_thread.stonewall = DEF_STONEWALL;
1038         def_thread.numjobs = DEF_NUMJOBS;
1039         def_thread.use_thread = DEF_USE_THREAD;
1040         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1041         def_thread.rwmixread = DEF_RWMIX_READ;
1042         def_thread.nice = DEF_NICE;
1043         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1044         def_thread.nr_files = DEF_NR_FILES;
1045 #ifdef FIO_HAVE_DISK_UTIL
1046         def_thread.do_disk_util = 1;
1047 #endif
1048
1049         return 0;
1050 }
1051
1052 static void usage(char *name)
1053 {
1054         printf("%s\n", fio_version_string);
1055         printf("\t-o Write output to file\n");
1056         printf("\t-t Runtime in seconds\n");
1057         printf("\t-l Generate per-job latency logs\n");
1058         printf("\t-w Generate per-job bandwidth logs\n");
1059         printf("\t-m Minimal (terse) output\n");
1060         printf("\t-v Print version info and exit\n");
1061 }
1062
1063 static int parse_cmd_line(int argc, char *argv[])
1064 {
1065         int c, idx = 1, ini_idx = 0;
1066
1067         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1068                 switch (c) {
1069                         case 't':
1070                                 def_timeout = atoi(optarg);
1071                                 idx = optind;
1072                                 break;
1073                         case 'l':
1074                                 write_lat_log = 1;
1075                                 idx = optind;
1076                                 break;
1077                         case 'w':
1078                                 write_bw_log = 1;
1079                                 idx = optind;
1080                                 break;
1081                         case 'o':
1082                                 f_out = fopen(optarg, "w+");
1083                                 if (!f_out) {
1084                                         perror("fopen output");
1085                                         exit(1);
1086                                 }
1087                                 f_err = f_out;
1088                                 idx = optind;
1089                                 break;
1090                         case 'm':
1091                                 terse_output = 1;
1092                                 idx = optind;
1093                                 break;
1094                         case 'h':
1095                                 usage(argv[0]);
1096                                 exit(0);
1097                         case 'v':
1098                                 printf("%s\n", fio_version_string);
1099                                 exit(0);
1100                 }
1101         }
1102
1103         while (idx < argc) {
1104                 ini_idx++;
1105                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1106                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1107                 idx++;
1108         }
1109
1110         if (!f_out) {
1111                 f_out = stdout;
1112                 f_err = stderr;
1113         }
1114
1115         return ini_idx;
1116 }
1117
1118 static void free_shm(void)
1119 {
1120         struct shmid_ds sbuf;
1121
1122         if (threads) {
1123                 shmdt((void *) threads);
1124                 threads = NULL;
1125                 shmctl(shm_id, IPC_RMID, &sbuf);
1126         }
1127 }
1128
1129 /*
1130  * The thread area is shared between the main process and the job
1131  * threads/processes. So setup a shared memory segment that will hold
1132  * all the job info.
1133  */
1134 static int setup_thread_area(void)
1135 {
1136         /*
1137          * 1024 is too much on some machines, scale max_jobs if
1138          * we get a failure that looks like too large a shm segment
1139          */
1140         do {
1141                 size_t size = max_jobs * sizeof(struct thread_data);
1142
1143                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1144                 if (shm_id != -1)
1145                         break;
1146                 if (errno != EINVAL) {
1147                         perror("shmget");
1148                         break;
1149                 }
1150
1151                 max_jobs >>= 1;
1152         } while (max_jobs);
1153
1154         if (shm_id == -1)
1155                 return 1;
1156
1157         threads = shmat(shm_id, NULL, 0);
1158         if (threads == (void *) -1) {
1159                 perror("shmat");
1160                 return 1;
1161         }
1162
1163         atexit(free_shm);
1164         return 0;
1165 }
1166
1167 int parse_options(int argc, char *argv[])
1168 {
1169         int job_files, i;
1170
1171         if (setup_thread_area())
1172                 return 1;
1173         if (fill_def_thread())
1174                 return 1;
1175
1176         job_files = parse_cmd_line(argc, argv);
1177         if (!job_files) {
1178                 log_err("Need job file(s)\n");
1179                 usage(argv[0]);
1180                 return 1;
1181         }
1182
1183         for (i = 0; i < job_files; i++) {
1184                 if (fill_def_thread())
1185                         return 1;
1186                 if (parse_jobs_ini(ini_file[i], i))
1187                         return 1;
1188                 free(ini_file[i]);
1189         }
1190
1191         free(ini_file);
1192         return 0;
1193 }