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