init.c

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