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 int def_sequential = DEF_SEQUENTIAL;
  44 static int def_bs = DEF_BS;
  45 static int def_timeout = DEF_TIMEOUT;
  46 static int def_repeatable = DEF_RAND_REPEAT;
  47 static int def_odirect = DEF_ODIRECT;
  48
  49 static char fio_version_string[] = "fio 1.4";
  50
  51 static char **ini_file;
  52 static int max_jobs = MAX_JOBS;
  53
  54 struct thread_data def_thread;
  55 struct thread_data *threads = NULL;
  56
  57 int rate_quit = 0;
  58 int write_lat_log = 0;
  59 int write_bw_log = 0;
  60 int exitall_on_terminate = 0;
  61 unsigned long long mlock_size = 0;
  62 FILE *f_out = NULL;
  63 FILE *f_err = NULL;
  64
  65 static struct thread_data *get_new_job(int global, struct thread_data *parent)
  66 {
  67         struct thread_data *td;
  68
  69         if (global)
  70                 return &def_thread;
  71         if (thread_number >= max_jobs)
  72                 return NULL;
  73
  74         td = &threads[thread_number++];
  75         *td = *parent;
  76         td->name[0] = '\0';
  77
  78         td->fd = -1;
  79         td->thread_number = thread_number;
  80         return td;
  81 }
  82
  83 static void put_job(struct thread_data *td)
  84 {
  85         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
  86         thread_number--;
  87 }
  88
  89 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
  90 {
  91         char *ddir_str[] = { "read", "write", "randread", "randwrite",
  92                              "rw", NULL, "randrw" };
  93         struct stat sb;
  94         int numjobs, ddir;
  95
  96 #ifndef FIO_HAVE_LIBAIO
  97         if (td->io_engine == FIO_LIBAIO) {
  98                 log_err("Linux libaio not available\n");
  99                 return 1;
 100         }
 101 #endif
 102 #ifndef FIO_HAVE_POSIXAIO
 103         if (td->io_engine == FIO_POSIXAIO) {
 104                 log_err("posix aio not available\n");
 105                 return 1;
 106         }
 107 #endif
 108
 109         /*
 110          * the def_thread is just for options, it's not a real job
 111          */
 112         if (td == &def_thread)
 113                 return 0;
 114
 115         if (td->io_engine & FIO_SYNCIO)
 116                 td->iodepth = 1;
 117         else {
 118                 if (!td->iodepth)
 119                         td->iodepth = 1;
 120         }
 121
 122         /*
 123          * only really works for sequential io for now
 124          */
 125         if (td->zone_size && !td->sequential)
 126                 td->zone_size = 0;
 127
 128         td->filetype = FIO_TYPE_FILE;
 129         if (!stat(jobname, &sb)) {
 130                 if (S_ISBLK(sb.st_mode))
 131                         td->filetype = FIO_TYPE_BD;
 132                 else if (S_ISCHR(sb.st_mode))
 133                         td->filetype = FIO_TYPE_CHAR;
 134         }
 135
 136         if (td->filetype == FIO_TYPE_FILE) {
 137                 char tmp[PATH_MAX];
 138
 139                 if (td->directory && td->directory[0] != '\0')
 140                         sprintf(tmp, "%s/%s.%d", td->directory, jobname, td->thread_number);
 141                 else
 142                         sprintf(tmp, "%s.%d", jobname, td->thread_number);
 143                 td->file_name = strdup(tmp);
 144         } else
 145                 td->file_name = strdup(jobname);
 146
 147         fio_sem_init(&td->mutex, 0);
 148
 149         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 150         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 151         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 152
 153         if (td->min_bs == -1U)
 154                 td->min_bs = td->bs;
 155         if (td->max_bs == -1U)
 156                 td->max_bs = td->bs;
 157         if (td_read(td) && !td_rw(td))
 158                 td->verify = 0;
 159
 160         if (td->stonewall && td->thread_number > 1)
 161                 groupid++;
 162
 163         td->groupid = groupid;
 164
 165         if (setup_rate(td))
 166                 goto err;
 167
 168         if (write_lat_log) {
 169                 setup_log(&td->slat_log);
 170                 setup_log(&td->clat_log);
 171         }
 172         if (write_bw_log)
 173                 setup_log(&td->bw_log);
 174
 175         if (td->name[0] == '\0')
 176                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
 177
 178         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 179
 180         if (!job_add_num)
 181                 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);
 182         else if (job_add_num == 1)
 183                 fprintf(f_out, "...\n");
 184
 185         /*
 186          * recurse add identical jobs, clear numjobs and stonewall options
 187          * as they don't apply to sub-jobs
 188          */
 189         numjobs = td->numjobs;
 190         while (--numjobs) {
 191                 struct thread_data *td_new = get_new_job(0, td);
 192
 193                 if (!td_new)
 194                         goto err;
 195
 196                 td_new->numjobs = 1;
 197                 td_new->stonewall = 0;
 198                 job_add_num = numjobs - 1;
 199
 200                 if (add_job(td_new, jobname, job_add_num))
 201                         goto err;
 202         }
 203         return 0;
 204 err:
 205         put_job(td);
 206         return -1;
 207 }
 208
 209 int init_random_state(struct thread_data *td)
 210 {
 211         unsigned long seeds[4];
 212         int fd, num_maps, blocks;
 213
 214         fd = open("/dev/urandom", O_RDONLY);
 215         if (fd == -1) {
 216                 td_verror(td, errno);
 217                 return 1;
 218         }
 219
 220         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 221                 td_verror(td, EIO);
 222                 close(fd);
 223                 return 1;
 224         }
 225
 226         close(fd);
 227
 228         os_random_seed(seeds[0], &td->bsrange_state);
 229         os_random_seed(seeds[1], &td->verify_state);
 230         os_random_seed(seeds[2], &td->rwmix_state);
 231
 232         if (td->sequential)
 233                 return 0;
 234
 235         if (def_repeatable)
 236                 seeds[3] = DEF_RANDSEED;
 237
 238         blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
 239         num_maps = blocks / BLOCKS_PER_MAP;
 240         td->file_map = malloc(num_maps * sizeof(long));
 241         td->num_maps = num_maps;
 242         memset(td->file_map, 0, num_maps * sizeof(long));
 243
 244         os_random_seed(seeds[3], &td->random_state);
 245         return 0;
 246 }
 247
 248 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 249 {
 250 #ifdef FIO_HAVE_CPU_AFFINITY
 251         unsigned int i;
 252
 253         CPU_ZERO(&cpumask);
 254
 255         for (i = 0; i < sizeof(int) * 8; i++) {
 256                 if ((1 << i) & cpu)
 257                         CPU_SET(i, &cpumask);
 258         }
 259 #endif
 260 }
 261
 262 static unsigned long get_mult(char c)
 263 {
 264         switch (c) {
 265                 case 'k':
 266                 case 'K':
 267                         return 1024;
 268                 case 'm':
 269                 case 'M':
 270                         return 1024 * 1024;
 271                 case 'g':
 272                 case 'G':
 273                         return 1024 * 1024 * 1024;
 274                 default:
 275                         return 1;
 276         }
 277 }
 278
 279 /*
 280  * convert string after '=' into decimal value, noting any size suffix
 281  */
 282 static int str_cnv(char *p, unsigned long long *val)
 283 {
 284         char *str;
 285         int len;
 286
 287         str = strchr(p, '=');
 288         if (!str)
 289                 return 1;
 290
 291         str++;
 292         len = strlen(str);
 293
 294         *val = strtoul(str, NULL, 10);
 295         if (*val == ULONG_MAX && errno == ERANGE)
 296                 return 1;
 297
 298         *val *= get_mult(str[len - 1]);
 299         return 0;
 300 }
 301
 302 static int check_strcnv(char *p, char *name, unsigned long long *val)
 303 {
 304         if (strncmp(p, name, strlen(name) - 1))
 305                 return 1;
 306
 307         return str_cnv(p, val);
 308 }
 309
 310 static void strip_blank_front(char **p)
 311 {
 312         char *s = *p;
 313
 314         while (isspace(*s))
 315                 s++;
 316 }
 317
 318 static void strip_blank_end(char *p)
 319 {
 320         char *s = p + strlen(p) - 1;
 321
 322         while (isspace(*s) || iscntrl(*s))
 323                 s--;
 324
 325         *(s + 1) = '\0';
 326 }
 327
 328 typedef int (str_cb_fn)(struct thread_data *, char *);
 329
 330 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 331 {
 332         char *s;
 333
 334         if (strncmp(p, name, strlen(name)))
 335                 return 1;
 336
 337         s = strstr(p, name);
 338         if (!s)
 339                 return 1;
 340
 341         s = strchr(s, '=');
 342         if (!s)
 343                 return 1;
 344
 345         s++;
 346         strip_blank_front(&s);
 347         return cb(td, s);
 348 }
 349
 350 static int check_strstore(char *p, char *name, char *dest)
 351 {
 352         char *s;
 353
 354         if (strncmp(p, name, strlen(name)))
 355                 return 1;
 356
 357         s = strstr(p, name);
 358         if (!s)
 359                 return 1;
 360
 361         s = strchr(p, '=');
 362         if (!s)
 363                 return 1;
 364
 365         s++;
 366         strip_blank_front(&s);
 367
 368         strcpy(dest, s);
 369         return 0;
 370 }
 371
 372 static int __check_range(char *str, unsigned long *val)
 373 {
 374         char suffix;
 375
 376         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 377                 *val *= get_mult(suffix);
 378                 return 0;
 379         }
 380
 381         if (sscanf(str, "%lu", val) == 1)
 382                 return 0;
 383
 384         return 1;
 385 }
 386
 387 static int check_range(char *p, char *name, unsigned long *s, unsigned long *e)
 388 {
 389         char option[128];
 390         char *str, *p1, *p2;
 391
 392         if (strncmp(p, name, strlen(name)))
 393                 return 1;
 394
 395         strcpy(option, p);
 396         p = option;
 397
 398         str = strstr(p, name);
 399         if (!str)
 400                 return 1;
 401
 402         p += strlen(name);
 403
 404         str = strchr(p, '=');
 405         if (!str)
 406                 return 1;
 407
 408         /*
 409          * 'p' now holds whatever is after the '=' sign
 410          */
 411         p1 = str + 1;
 412
 413         /*
 414          * terminate p1 at the '-' sign
 415          */
 416         p = strchr(p1, '-');
 417         if (!p)
 418                 return 1;
 419
 420         p2 = p + 1;
 421         *p = '\0';
 422
 423         if (!__check_range(p1, s) && !__check_range(p2, e))
 424                 return 0;
 425
 426         return 1;
 427 }
 428
 429 static int check_int(char *p, char *name, unsigned int *val)
 430 {
 431         char *str;
 432
 433         if (strncmp(p, name, strlen(name)))
 434                 return 1;
 435
 436         str = strstr(p, name);
 437         if (!str)
 438                 return 1;
 439
 440         str = strchr(p, '=');
 441         if (!str)
 442                 return 1;
 443
 444         str++;
 445
 446         if (sscanf(str, "%u", val) == 1)
 447                 return 0;
 448
 449         return 1;
 450 }
 451
 452 static int check_strset(char *p, char *name)
 453 {
 454         return strncmp(p, name, strlen(name));
 455 }
 456
 457 static int is_empty_or_comment(char *line)
 458 {
 459         unsigned int i;
 460
 461         for (i = 0; i < strlen(line); i++) {
 462                 if (line[i] == ';')
 463                         return 1;
 464                 if (!isspace(line[i]) && !iscntrl(line[i]))
 465                         return 0;
 466         }
 467
 468         return 1;
 469 }
 470
 471 static int str_rw_cb(struct thread_data *td, char *mem)
 472 {
 473         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 474                 td->ddir = DDIR_READ;
 475                 td->sequential = 1;
 476                 return 0;
 477         } else if (!strncmp(mem, "randread", 8)) {
 478                 td->ddir = DDIR_READ;
 479                 td->sequential = 0;
 480                 return 0;
 481         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 482                 td->ddir = DDIR_WRITE;
 483                 td->sequential = 1;
 484                 return 0;
 485         } else if (!strncmp(mem, "randwrite", 9)) {
 486                 td->ddir = DDIR_WRITE;
 487                 td->sequential = 0;
 488                 return 0;
 489         } else if (!strncmp(mem, "rw", 2)) {
 490                 td->ddir = 0;
 491                 td->iomix = 1;
 492                 td->sequential = 1;
 493                 return 0;
 494         } else if (!strncmp(mem, "randrw", 6)) {
 495                 td->ddir = 0;
 496                 td->iomix = 1;
 497                 td->sequential = 0;
 498                 return 0;
 499         }
 500
 501         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 502         return 1;
 503 }
 504
 505 static int str_verify_cb(struct thread_data *td, char *mem)
 506 {
 507         if (!strncmp(mem, "0", 1)) {
 508                 td->verify = VERIFY_NONE;
 509                 return 0;
 510         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 511                 td->verify = VERIFY_MD5;
 512                 return 0;
 513         } else if (!strncmp(mem, "crc32", 5)) {
 514                 td->verify = VERIFY_CRC32;
 515                 return 0;
 516         }
 517
 518         log_err("fio: verify types: md5, crc32\n");
 519         return 1;
 520 }
 521
 522 static int str_mem_cb(struct thread_data *td, char *mem)
 523 {
 524         if (!strncmp(mem, "malloc", 6)) {
 525                 td->mem_type = MEM_MALLOC;
 526                 return 0;
 527         } else if (!strncmp(mem, "shm", 3)) {
 528                 td->mem_type = MEM_SHM;
 529                 return 0;
 530         } else if (!strncmp(mem, "mmap", 4)) {
 531                 td->mem_type = MEM_MMAP;
 532                 return 0;
 533         }
 534
 535         log_err("fio: mem type: malloc, shm, mmap\n");
 536         return 1;
 537 }
 538
 539 static int str_ioengine_cb(struct thread_data *td, char *str)
 540 {
 541         if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
 542             !strncmp(str, "libaio", 6)) {
 543                 strcpy(td->io_engine_name, "libaio");
 544                 td->io_engine = FIO_LIBAIO;
 545                 return 0;
 546         } else if (!strncmp(str, "posixaio", 8)) {
 547                 strcpy(td->io_engine_name, "posixaio");
 548                 td->io_engine = FIO_POSIXAIO;
 549                 return 0;
 550         } else if (!strncmp(str, "sync", 4)) {
 551                 strcpy(td->io_engine_name, "sync");
 552                 td->io_engine = FIO_SYNCIO;
 553                 return 0;
 554         } else if (!strncmp(str, "mmap", 4)) {
 555                 strcpy(td->io_engine_name, "mmap");
 556                 td->io_engine = FIO_MMAPIO;
 557                 return 0;
 558         } else if (!strncmp(str, "sgio", 4)) {
 559                 strcpy(td->io_engine_name, "sgio");
 560                 td->io_engine = FIO_SGIO;
 561                 return 0;
 562         } else if (!strncmp(str, "splice", 6)) {
 563                 strcpy(td->io_engine_name, "splice");
 564                 td->io_engine = FIO_SPLICEIO;
 565                 return 0;
 566         }
 567
 568         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice\n");
 569         return 1;
 570 }
 571
 572 /*
 573  * This is our [ini] type file parser.
 574  */
 575 int parse_jobs_ini(char *file)
 576 {
 577         unsigned int prioclass, prio, cpu, global, il;
 578         unsigned long long ull;
 579         unsigned long ul1, ul2;
 580         struct thread_data *td;
 581         char *string, *name, *tmpbuf;
 582         fpos_t off;
 583         FILE *f;
 584         char *p;
 585         int ret = 0, stonewall = 1;
 586
 587         f = fopen(file, "r");
 588         if (!f) {
 589                 perror("fopen job file");
 590                 return 1;
 591         }
 592
 593         string = malloc(4096);
 594         name = malloc(256);
 595         tmpbuf = malloc(4096);
 596
 597         while ((p = fgets(string, 4096, f)) != NULL) {
 598                 if (ret)
 599                         break;
 600                 if (is_empty_or_comment(p))
 601                         continue;
 602                 if (sscanf(p, "[%s]", name) != 1)
 603                         continue;
 604
 605                 global = !strncmp(name, "global", 6);
 606
 607                 name[strlen(name) - 1] = '\0';
 608
 609                 td = get_new_job(global, &def_thread);
 610                 if (!td) {
 611                         ret = 1;
 612                         break;
 613                 }
 614
 615                 /*
 616                  * Seperate multiple job files by a stonewall
 617                  */
 618                 if (!global && stonewall) {
 619                         td->stonewall = stonewall;
 620                         stonewall = 0;
 621                 }
 622
 623                 fgetpos(f, &off);
 624                 while ((p = fgets(string, 4096, f)) != NULL) {
 625                         if (is_empty_or_comment(p))
 626                                 continue;
 627                         if (strstr(p, "["))
 628                                 break;
 629                         strip_blank_front(&p);
 630                         strip_blank_end(p);
 631
 632                         if (!check_int(p, "prio", &prio)) {
 633 #ifndef FIO_HAVE_IOPRIO
 634                                 log_err("io priorities not available\n");
 635                                 ret = 1;
 636                                 break;
 637 #endif
 638                                 td->ioprio |= prio;
 639                                 fgetpos(f, &off);
 640                                 continue;
 641                         }
 642                         if (!check_int(p, "prioclass", &prioclass)) {
 643 #ifndef FIO_HAVE_IOPRIO
 644                                 log_err("io priorities not available\n");
 645                                 ret = 1;
 646                                 break;
 647 #else
 648                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 649                                 fgetpos(f, &off);
 650                                 continue;
 651 #endif
 652                         }
 653                         if (!check_int(p, "direct", &il)) {
 654                                 td->odirect = il;
 655                                 fgetpos(f, &off);
 656                                 continue;
 657                         }
 658                         if (!check_int(p, "rate", &td->rate)) {
 659                                 fgetpos(f, &off);
 660                                 continue;
 661                         }
 662                         if (!check_int(p, "ratemin", &td->ratemin)) {
 663                                 fgetpos(f, &off);
 664                                 continue;
 665                         }
 666                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 667                                 fgetpos(f, &off);
 668                                 continue;
 669                         }
 670                         if (!check_int(p, "thinktime", &td->thinktime)) {
 671                                 fgetpos(f, &off);
 672                                 continue;
 673                         }
 674                         if (!check_int(p, "cpumask", &cpu)) {
 675 #ifndef FIO_HAVE_CPU_AFFINITY
 676                                 log_err("cpu affinity not available\n");
 677                                 ret = 1;
 678                                 break;
 679 #endif
 680                                 fill_cpu_mask(td->cpumask, cpu);
 681                                 fgetpos(f, &off);
 682                                 continue;
 683                         }
 684                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 685                                 fgetpos(f, &off);
 686                                 td->end_fsync = 1;
 687                                 continue;
 688                         }
 689                         if (!check_int(p, "startdelay", &td->start_delay)) {
 690                                 fgetpos(f, &off);
 691                                 continue;
 692                         }
 693                         if (!check_int(p, "timeout", &td->timeout)) {
 694                                 fgetpos(f, &off);
 695                                 continue;
 696                         }
 697                         if (!check_int(p, "invalidate", &il)) {
 698                                 td->invalidate_cache = il;
 699                                 fgetpos(f, &off);
 700                                 continue;
 701                         }
 702                         if (!check_int(p, "iodepth", &td->iodepth)) {
 703                                 fgetpos(f, &off);
 704                                 continue;
 705                         }
 706                         if (!check_int(p, "sync", &il)) {
 707                                 td->sync_io = il;
 708                                 fgetpos(f, &off);
 709                                 continue;
 710                         }
 711                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 712                                 fgetpos(f, &off);
 713                                 continue;
 714                         }
 715                         if (!check_int(p, "create_serialize", &il)) {
 716                                 td->create_serialize = il;
 717                                 fgetpos(f, &off);
 718                                 continue;
 719                         }
 720                         if (!check_int(p, "create_fsync", &il)) {
 721                                 td->create_fsync = il;
 722                                 fgetpos(f, &off);
 723                                 continue;
 724                         }
 725                         if (!check_int(p, "end_fsync", &il)) {
 726                                 td->end_fsync = il;
 727                                 fgetpos(f, &off);
 728                                 continue;
 729                         }
 730                         if (!check_int(p, "loops", &td->loops)) {
 731                                 fgetpos(f, &off);
 732                                 continue;
 733                         }
 734                         if (!check_int(p, "numjobs", &td->numjobs)) {
 735                                 fgetpos(f, &off);
 736                                 continue;
 737                         }
 738                         if (!check_int(p, "overwrite", &il)) {
 739                                 td->overwrite = il;
 740                                 fgetpos(f, &off);
 741                                 continue;
 742                         }
 743                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 744                                 fgetpos(f, &off);
 745                                 continue;
 746                         }
 747                         if (!check_int(p, "rwmixread", &il)) {
 748                                 if (il > 100)
 749                                         il = 100;
 750                                 td->rwmixread = il;
 751                                 fgetpos(f, &off);
 752                                 continue;
 753                         }
 754                         if (!check_int(p, "rwmixwrite", &il)) {
 755                                 if (il > 100)
 756                                         il = 100;
 757                                 td->rwmixread = 100 - il;
 758                                 fgetpos(f, &off);
 759                                 continue;
 760                         }
 761                         if (!check_int(p, "nice", &td->nice)) {
 762                                 fgetpos(f, &off);
 763                                 continue;
 764                         }
 765                         if (!check_range(p, "bsrange", &ul1, &ul2)) {
 766                                 if (ul1 > ul2) {
 767                                         td->max_bs = ul1;
 768                                         td->min_bs = ul2;
 769                                 } else {
 770                                         td->max_bs = ul2;
 771                                         td->min_bs = ul1;
 772                                 }
 773                                 fgetpos(f, &off);
 774                                 continue;
 775                         }
 776                         if (!check_strcnv(p, "bs", &ull)) {
 777                                 td->bs = ull;
 778                                 fgetpos(f, &off);
 779                                 continue;
 780                         }
 781                         if (!check_strcnv(p, "size", &td->file_size)) {
 782                                 fgetpos(f, &off);
 783                                 continue;
 784                         }
 785                         if (!check_strcnv(p, "offset", &td->file_offset)) {
 786                                 fgetpos(f, &off);
 787                                 continue;
 788                         }
 789                         if (!check_strcnv(p, "zonesize", &td->zone_size)) {
 790                                 fgetpos(f, &off);
 791                                 continue;
 792                         }
 793                         if (!check_strcnv(p, "zoneskip", &td->zone_skip)) {
 794                                 fgetpos(f, &off);
 795                                 continue;
 796                         }
 797                         if (!check_strcnv(p, "lockmem", &mlock_size)) {
 798                                 fgetpos(f, &off);
 799                                 continue;
 800                         }
 801                         if (!check_strstore(p, "directory", tmpbuf)) {
 802                                 td->directory = strdup(tmpbuf);
 803                                 fgetpos(f, &off);
 804                                 continue;
 805                         }
 806                         if (!check_strstore(p, "name", tmpbuf)) {
 807                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 808                                 fgetpos(f, &off);
 809                                 continue;
 810                         }
 811                         if (!check_str(p, "mem", str_mem_cb, td)) {
 812                                 fgetpos(f, &off);
 813                                 continue;
 814                         }
 815                         if (!check_str(p, "verify", str_verify_cb, td)) {
 816                                 fgetpos(f, &off);
 817                                 continue;
 818                         }
 819                         if (!check_str(p, "rw", str_rw_cb, td)) {
 820                                 fgetpos(f, &off);
 821                                 continue;
 822                         }
 823                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 824                                 fgetpos(f, &off);
 825                                 continue;
 826                         }
 827                         if (!check_strset(p, "create")) {
 828                                 td->create_file = 1;
 829                                 fgetpos(f, &off);
 830                                 continue;
 831                         }
 832                         if (!check_strset(p, "exitall")) {
 833                                 exitall_on_terminate = 1;
 834                                 fgetpos(f, &off);
 835                                 continue;
 836                         }
 837                         if (!check_strset(p, "stonewall")) {
 838                                 td->stonewall = 1;
 839                                 fgetpos(f, &off);
 840                                 continue;
 841                         }
 842                         if (!check_strset(p, "thread")) {
 843                                 td->use_thread = 1;
 844                                 fgetpos(f, &off);
 845                                 continue;
 846                         }
 847                         if (!check_strstore(p, "iolog", tmpbuf)) {
 848                                 if (td->write_iolog) {
 849                                         log_err("fio: read iolog overrides given write_iolog\n");
 850                                         free(td->iolog_file);
 851                                         td->write_iolog = 0;
 852                                 }
 853                                 td->iolog_file = strdup(tmpbuf);
 854                                 td->read_iolog = 1;
 855                                 fgetpos(f, &off);
 856                                 continue;
 857                         }
 858                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 859                                 if (!td->read_iolog) {
 860                                         td->iolog_file = strdup(tmpbuf);
 861                                         td->write_iolog = 1;
 862                                 } else
 863                                         log_err("fio: read iolog overrides given write_iolog\n");
 864                                 fgetpos(f, &off);
 865                                 continue;
 866                         }
 867                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 868                                 td->exec_prerun = strdup(tmpbuf);
 869                                 fgetpos(f, &off);
 870                                 continue;
 871                         }
 872                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 873                                 td->exec_postrun = strdup(tmpbuf);
 874                                 fgetpos(f, &off);
 875                                 continue;
 876                         }
 877                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 878 #ifndef FIO_HAVE_IOSCHED_SWITCH
 879                                 log_err("io scheduler switching not available\n");
 880                                 ret = 1;
 881                                 break;
 882 #else
 883                                 td->ioscheduler = strdup(tmpbuf);
 884                                 fgetpos(f, &off);
 885                                 continue;
 886 #endif
 887                         }
 888
 889                         /*
 890                          * Don't break here, continue parsing options so we
 891                          * dump all the bad ones. Makes trial/error fixups
 892                          * easier on the user.
 893                          */
 894                         printf("Client%d: bad option %s\n",td->thread_number,p);
 895                         ret = 1;
 896                 }
 897
 898                 if (!ret) {
 899                         fsetpos(f, &off);
 900                         ret = add_job(td, name, 0);
 901                 }
 902                 if (ret)
 903                         break;
 904         }
 905
 906         free(string);
 907         free(name);
 908         free(tmpbuf);
 909         fclose(f);
 910         return ret;
 911 }
 912
 913 static int fill_def_thread(void)
 914 {
 915         memset(&def_thread, 0, sizeof(def_thread));
 916
 917         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
 918                 perror("sched_getaffinity");
 919                 return 1;
 920         }
 921
 922         /*
 923          * fill globals
 924          */
 925         def_thread.ddir = DDIR_READ;
 926         def_thread.iomix = 0;
 927         def_thread.bs = def_bs;
 928         def_thread.min_bs = -1;
 929         def_thread.max_bs = -1;
 930         def_thread.io_engine = DEF_IO_ENGINE;
 931         strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
 932         def_thread.odirect = def_odirect;
 933         def_thread.ratecycle = DEF_RATE_CYCLE;
 934         def_thread.sequential = def_sequential;
 935         def_thread.timeout = def_timeout;
 936         def_thread.create_file = DEF_CREATE;
 937         def_thread.overwrite = DEF_OVERWRITE;
 938         def_thread.invalidate_cache = DEF_INVALIDATE;
 939         def_thread.sync_io = DEF_SYNCIO;
 940         def_thread.mem_type = MEM_MALLOC;
 941         def_thread.bw_avg_time = DEF_BWAVGTIME;
 942         def_thread.create_serialize = DEF_CREATE_SER;
 943         def_thread.create_fsync = DEF_CREATE_FSYNC;
 944         def_thread.loops = DEF_LOOPS;
 945         def_thread.verify = DEF_VERIFY;
 946         def_thread.stonewall = DEF_STONEWALL;
 947         def_thread.numjobs = DEF_NUMJOBS;
 948         def_thread.use_thread = DEF_USE_THREAD;
 949         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
 950         def_thread.rwmixread = DEF_RWMIX_READ;
 951         def_thread.nice = DEF_NICE;
 952 #ifdef FIO_HAVE_DISK_UTIL
 953         def_thread.do_disk_util = 1;
 954 #endif
 955
 956         return 0;
 957 }
 958
 959 static void usage(char *name)
 960 {
 961         printf("%s\n", fio_version_string);
 962         printf("\t-s IO is sequential\n");
 963         printf("\t-b Block size in KiB for each IO\n");
 964         printf("\t-t Runtime in seconds\n");
 965         printf("\t-R Exit all threads on failure to meet rate goal\n");
 966         printf("\t-o Use O_DIRECT\n");
 967         printf("\t-l Generate per-job latency logs\n");
 968         printf("\t-w Generate per-job bandwidth logs\n");
 969         printf("\t-f Job file (Required)\n");
 970         printf("\t-v Print version info and exit\n");
 971 }
 972
 973 static int parse_cmd_line(int argc, char *argv[])
 974 {
 975         int c, idx = 1, ini_idx = 0;
 976
 977         while ((c = getopt(argc, argv, "s:b:t:r:R:o:f:lwvhO:")) != EOF) {
 978                 switch (c) {
 979                         case 's':
 980                                 def_sequential = !!atoi(optarg);
 981                                 idx++;
 982                                 break;
 983                         case 'b':
 984                                 def_bs = atoi(optarg);
 985                                 def_bs <<= 10;
 986                                 if (!def_bs) {
 987                                         printf("bad block size\n");
 988                                         def_bs = DEF_BS;
 989                                 }
 990                                 idx++;
 991                                 break;
 992                         case 't':
 993                                 def_timeout = atoi(optarg);
 994                                 idx++;
 995                                 break;
 996                         case 'r':
 997                                 def_repeatable = !!atoi(optarg);
 998                                 idx++;
 999                                 break;
1000                         case 'R':
1001                                 rate_quit = !!atoi(optarg);
1002                                 idx++;
1003                                 break;
1004                         case 'o':
1005                                 def_odirect = !!atoi(optarg);
1006                                 idx++;
1007                                 break;
1008                         case 'f':
1009                                 ini_idx++;
1010                                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1011                                 ini_file[ini_idx - 1] = strdup(optarg);
1012                                 idx++;
1013                                 break;
1014                         case 'l':
1015                                 write_lat_log = 1;
1016                                 idx++;
1017                                 break;
1018                         case 'w':
1019                                 write_bw_log = 1;
1020                                 idx++;
1021                                 break;
1022                         case 'O':
1023                                 f_out = fopen(optarg, "w+");
1024                                 if (!f_out) {
1025                                         perror("fopen output");
1026                                         exit(1);
1027                                 }
1028                                 f_err = f_out;
1029                                 idx++;
1030                                 break;
1031                         case 'h':
1032                                 usage(argv[0]);
1033                                 exit(0);
1034                         case 'v':
1035                                 printf("%s\n", fio_version_string);
1036                                 exit(0);
1037                 }
1038         }
1039
1040         while (idx < argc) {
1041                 ini_idx++;
1042                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1043                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1044                 idx++;
1045         }
1046
1047         if (!f_out) {
1048                 f_out = stdout;
1049                 f_err = stderr;
1050         }
1051
1052         return ini_idx;
1053 }
1054
1055 static void free_shm(void)
1056 {
1057         struct shmid_ds sbuf;
1058
1059         if (threads) {
1060                 shmdt((void *) threads);
1061                 threads = NULL;
1062                 shmctl(shm_id, IPC_RMID, &sbuf);
1063         }
1064 }
1065
1066 static int setup_thread_area(void)
1067 {
1068         /*
1069          * 1024 is too much on some machines, scale max_jobs if
1070          * we get a failure that looks like too large a shm segment
1071          */
1072         do {
1073                 int s = max_jobs * sizeof(struct thread_data);
1074
1075                 shm_id = shmget(0, s, IPC_CREAT | 0600);
1076                 if (shm_id != -1)
1077                         break;
1078                 if (errno != EINVAL) {
1079                         perror("shmget");
1080                         break;
1081                 }
1082
1083                 max_jobs >>= 1;
1084         } while (max_jobs);
1085
1086         if (shm_id == -1)
1087                 return 1;
1088
1089         threads = shmat(shm_id, NULL, 0);
1090         if (threads == (void *) -1) {
1091                 perror("shmat");
1092                 return 1;
1093         }
1094
1095         atexit(free_shm);
1096         return 0;
1097 }
1098
1099 int parse_options(int argc, char *argv[])
1100 {
1101         int job_files, i;
1102
1103         if (setup_thread_area())
1104                 return 1;
1105         if (fill_def_thread())
1106                 return 1;
1107
1108         job_files = parse_cmd_line(argc, argv);
1109         if (!job_files) {
1110                 log_err("Need job file(s)\n");
1111                 usage(argv[0]);
1112                 return 1;
1113         }
1114
1115         for (i = 0; i < job_files; i++) {
1116                 if (fill_def_thread())
1117                         return 1;
1118                 if (parse_jobs_ini(ini_file[i]))
1119                         return 1;
1120                 free(ini_file[i]);
1121         }
1122
1123         free(ini_file);
1124         return 0;
1125 }