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