init.c

   1 /*
   2  * This file contains the ini and command liner parser. It will create
   3  * and initialize the specified jobs.
   4  */
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <unistd.h>
   8 #include <fcntl.h>
   9 #include <ctype.h>
  10 #include <string.h>
  11 #include <errno.h>
  12 #include <sys/ipc.h>
  13 #include <sys/shm.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16
  17 #include "fio.h"
  18
  19 /*
  20  * The default options
  21  */
  22 #define DEF_BS                  (4096)
  23 #define DEF_TIMEOUT             (0)
  24 #define DEF_RATE_CYCLE          (1000)
  25 #define DEF_ODIRECT             (1)
  26 #define DEF_IO_ENGINE           (FIO_SYNCIO)
  27 #define DEF_IO_ENGINE_NAME      "sync"
  28 #define DEF_SEQUENTIAL          (1)
  29 #define DEF_RAND_REPEAT         (1)
  30 #define DEF_OVERWRITE           (1)
  31 #define DEF_CREATE              (1)
  32 #define DEF_INVALIDATE          (1)
  33 #define DEF_SYNCIO              (0)
  34 #define DEF_RANDSEED            (0xb1899bedUL)
  35 #define DEF_BWAVGTIME           (500)
  36 #define DEF_CREATE_SER          (1)
  37 #define DEF_CREATE_FSYNC        (1)
  38 #define DEF_LOOPS               (1)
  39 #define DEF_VERIFY              (0)
  40 #define DEF_STONEWALL           (0)
  41 #define DEF_NUMJOBS             (1)
  42 #define DEF_USE_THREAD          (0)
  43 #define DEF_FILE_SIZE           (1024 * 1024 * 1024UL)
  44 #define DEF_ZONE_SIZE           (0)
  45 #define DEF_ZONE_SKIP           (0)
  46 #define DEF_RWMIX_CYCLE         (500)
  47 #define DEF_RWMIX_READ          (50)
  48 #define DEF_NICE                (0)
  49
  50 static int def_timeout = DEF_TIMEOUT;
  51
  52 static char fio_version_string[] = "fio 1.5";
  53
  54 static char **ini_file;
  55 static int max_jobs = MAX_JOBS;
  56
  57 struct thread_data def_thread;
  58 struct thread_data *threads = NULL;
  59
  60 int rate_quit = 0;
  61 int write_lat_log = 0;
  62 int write_bw_log = 0;
  63 int exitall_on_terminate = 0;
  64 int terse_output = 0;
  65 unsigned long long mlock_size = 0;
  66 FILE *f_out = NULL;
  67 FILE *f_err = NULL;
  68
  69 /*
  70  * Return a free job structure.
  71  */
  72 static struct thread_data *get_new_job(int global, struct thread_data *parent)
  73 {
  74         struct thread_data *td;
  75
  76         if (global)
  77                 return &def_thread;
  78         if (thread_number >= max_jobs)
  79                 return NULL;
  80
  81         td = &threads[thread_number++];
  82         *td = *parent;
  83         td->name[0] = '\0';
  84
  85         td->fd = -1;
  86         td->thread_number = thread_number;
  87         return td;
  88 }
  89
  90 static void put_job(struct thread_data *td)
  91 {
  92         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
  93         thread_number--;
  94 }
  95
  96 /*
  97  * Adds a job to the list of things todo. Sanitizes the various options
  98  * to make sure we don't have conflicts, and initializes various
  99  * members of td.
 100  */
 101 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 102 {
 103         char *ddir_str[] = { "read", "write", "randread", "randwrite",
 104                              "rw", NULL, "randrw" };
 105         struct stat sb;
 106         int numjobs, ddir;
 107
 108 #ifndef FIO_HAVE_LIBAIO
 109         if (td->io_engine == FIO_LIBAIO) {
 110                 log_err("Linux libaio not available\n");
 111                 return 1;
 112         }
 113 #endif
 114 #ifndef FIO_HAVE_POSIXAIO
 115         if (td->io_engine == FIO_POSIXAIO) {
 116                 log_err("posix aio not available\n");
 117                 return 1;
 118         }
 119 #endif
 120
 121         /*
 122          * the def_thread is just for options, it's not a real job
 123          */
 124         if (td == &def_thread)
 125                 return 0;
 126
 127         if (td->io_engine & FIO_SYNCIO)
 128                 td->iodepth = 1;
 129         else {
 130                 if (!td->iodepth)
 131                         td->iodepth = 1;
 132         }
 133
 134         /*
 135          * only really works for sequential io for now
 136          */
 137         if (td->zone_size && !td->sequential)
 138                 td->zone_size = 0;
 139
 140         /*
 141          * Reads can do overwrites, we always need to pre-create the file
 142          */
 143         if (td_read(td) || td_rw(td))
 144                 td->overwrite = 1;
 145
 146         td->filetype = FIO_TYPE_FILE;
 147         if (!stat(jobname, &sb)) {
 148                 if (S_ISBLK(sb.st_mode))
 149                         td->filetype = FIO_TYPE_BD;
 150                 else if (S_ISCHR(sb.st_mode))
 151                         td->filetype = FIO_TYPE_CHAR;
 152         }
 153
 154         if (td->filetype == FIO_TYPE_FILE) {
 155                 char tmp[PATH_MAX];
 156
 157                 if (td->directory && td->directory[0] != '\0')
 158                         sprintf(tmp, "%s/%s.%d", td->directory, jobname, td->thread_number);
 159                 else
 160                         sprintf(tmp, "%s.%d", jobname, td->thread_number);
 161                 td->file_name = strdup(tmp);
 162         } else
 163                 td->file_name = strdup(jobname);
 164
 165         fio_sem_init(&td->mutex, 0);
 166
 167         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 168         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 169         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 170
 171         if (td->min_bs == -1U)
 172                 td->min_bs = td->bs;
 173         if (td->max_bs == -1U)
 174                 td->max_bs = td->bs;
 175         if (td_read(td) && !td_rw(td))
 176                 td->verify = 0;
 177
 178         if (td->stonewall && td->thread_number > 1)
 179                 groupid++;
 180
 181         td->groupid = groupid;
 182
 183         if (setup_rate(td))
 184                 goto err;
 185
 186         if (write_lat_log) {
 187                 setup_log(&td->slat_log);
 188                 setup_log(&td->clat_log);
 189         }
 190         if (write_bw_log)
 191                 setup_log(&td->bw_log);
 192
 193         if (td->name[0] == '\0')
 194                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
 195
 196         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 197
 198         if (!terse_output) {
 199                 if (!job_add_num)
 200                         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);
 201                 else if (job_add_num == 1)
 202                         fprintf(f_out, "...\n");
 203         }
 204
 205         /*
 206          * recurse add identical jobs, clear numjobs and stonewall options
 207          * as they don't apply to sub-jobs
 208          */
 209         numjobs = td->numjobs;
 210         while (--numjobs) {
 211                 struct thread_data *td_new = get_new_job(0, td);
 212
 213                 if (!td_new)
 214                         goto err;
 215
 216                 td_new->numjobs = 1;
 217                 td_new->stonewall = 0;
 218                 job_add_num = numjobs - 1;
 219
 220                 if (add_job(td_new, jobname, job_add_num))
 221                         goto err;
 222         }
 223         return 0;
 224 err:
 225         put_job(td);
 226         return -1;
 227 }
 228
 229 /*
 230  * Initialize the various random states we need (random io, block size ranges,
 231  * read/write mix, etc).
 232  */
 233 int init_random_state(struct thread_data *td)
 234 {
 235         unsigned long seeds[4];
 236         int fd, num_maps, blocks;
 237
 238         fd = open("/dev/urandom", O_RDONLY);
 239         if (fd == -1) {
 240                 td_verror(td, errno);
 241                 return 1;
 242         }
 243
 244         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 245                 td_verror(td, EIO);
 246                 close(fd);
 247                 return 1;
 248         }
 249
 250         close(fd);
 251
 252         os_random_seed(seeds[0], &td->bsrange_state);
 253         os_random_seed(seeds[1], &td->verify_state);
 254         os_random_seed(seeds[2], &td->rwmix_state);
 255
 256         if (td->sequential)
 257                 return 0;
 258
 259         if (td->rand_repeatable)
 260                 seeds[3] = DEF_RANDSEED;
 261
 262         blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
 263         num_maps = blocks / BLOCKS_PER_MAP;
 264         td->file_map = malloc(num_maps * sizeof(long));
 265         td->num_maps = num_maps;
 266         memset(td->file_map, 0, num_maps * sizeof(long));
 267
 268         os_random_seed(seeds[3], &td->random_state);
 269         return 0;
 270 }
 271
 272 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 273 {
 274 #ifdef FIO_HAVE_CPU_AFFINITY
 275         unsigned int i;
 276
 277         CPU_ZERO(&cpumask);
 278
 279         for (i = 0; i < sizeof(int) * 8; i++) {
 280                 if ((1 << i) & cpu)
 281                         CPU_SET(i, &cpumask);
 282         }
 283 #endif
 284 }
 285
 286 static unsigned long get_mult_time(char c)
 287 {
 288         switch (c) {
 289                 case 'm':
 290                 case 'M':
 291                         return 60;
 292                 case 'h':
 293                 case 'H':
 294                         return 60 * 60;
 295                 case 'd':
 296                 case 'D':
 297                         return 24 * 60 * 60;
 298                 default:
 299                         return 1;
 300         }
 301 }
 302
 303 static unsigned long get_mult_bytes(char c)
 304 {
 305         switch (c) {
 306                 case 'k':
 307                 case 'K':
 308                         return 1024;
 309                 case 'm':
 310                 case 'M':
 311                         return 1024 * 1024;
 312                 case 'g':
 313                 case 'G':
 314                         return 1024 * 1024 * 1024;
 315                 default:
 316                         return 1;
 317         }
 318 }
 319
 320 /*
 321  * convert string after '=' into decimal value, noting any size suffix
 322  */
 323 static int str_to_decimal(char *p, unsigned long long *val, int kilo)
 324 {
 325         char *str;
 326         int len;
 327
 328         str = strchr(p, '=');
 329         if (!str)
 330                 return 1;
 331
 332         str++;
 333         len = strlen(str);
 334
 335         *val = strtoul(str, NULL, 10);
 336         if (*val == ULONG_MAX && errno == ERANGE)
 337                 return 1;
 338
 339         if (kilo)
 340                 *val *= get_mult_bytes(str[len - 1]);
 341         else
 342                 *val *= get_mult_time(str[len - 1]);
 343         return 0;
 344 }
 345
 346 static int check_str_bytes(char *p, char *name, unsigned long long *val)
 347 {
 348         if (strncmp(p, name, strlen(name) - 1))
 349                 return 1;
 350
 351         return str_to_decimal(p, val, 1);
 352 }
 353
 354 static int check_str_time(char *p, char *name, unsigned long long *val)
 355 {
 356         if (strncmp(p, name, strlen(name) - 1))
 357                 return 1;
 358
 359         return str_to_decimal(p, val, 0);
 360 }
 361
 362 static void strip_blank_front(char **p)
 363 {
 364         char *s = *p;
 365
 366         while (isspace(*s))
 367                 s++;
 368 }
 369
 370 static void strip_blank_end(char *p)
 371 {
 372         char *s = p + strlen(p) - 1;
 373
 374         while (isspace(*s) || iscntrl(*s))
 375                 s--;
 376
 377         *(s + 1) = '\0';
 378 }
 379
 380 typedef int (str_cb_fn)(struct thread_data *, char *);
 381
 382 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 383 {
 384         char *s;
 385
 386         if (strncmp(p, name, strlen(name)))
 387                 return 1;
 388
 389         s = strstr(p, name);
 390         if (!s)
 391                 return 1;
 392
 393         s = strchr(s, '=');
 394         if (!s)
 395                 return 1;
 396
 397         s++;
 398         strip_blank_front(&s);
 399         return cb(td, s);
 400 }
 401
 402 static int check_strstore(char *p, char *name, char *dest)
 403 {
 404         char *s;
 405
 406         if (strncmp(p, name, strlen(name)))
 407                 return 1;
 408
 409         s = strstr(p, name);
 410         if (!s)
 411                 return 1;
 412
 413         s = strchr(p, '=');
 414         if (!s)
 415                 return 1;
 416
 417         s++;
 418         strip_blank_front(&s);
 419
 420         strcpy(dest, s);
 421         return 0;
 422 }
 423
 424 static int __check_range_bytes(char *str, unsigned long *val)
 425 {
 426         char suffix;
 427
 428         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 429                 *val *= get_mult_bytes(suffix);
 430                 return 0;
 431         }
 432
 433         if (sscanf(str, "%lu", val) == 1)
 434                 return 0;
 435
 436         return 1;
 437 }
 438
 439 static int check_range_bytes(char *p, char *name, unsigned long *s,
 440                              unsigned long *e)
 441 {
 442         char option[128];
 443         char *str, *p1, *p2;
 444
 445         if (strncmp(p, name, strlen(name)))
 446                 return 1;
 447
 448         strcpy(option, p);
 449         p = option;
 450
 451         str = strstr(p, name);
 452         if (!str)
 453                 return 1;
 454
 455         p += strlen(name);
 456
 457         str = strchr(p, '=');
 458         if (!str)
 459                 return 1;
 460
 461         /*
 462          * 'p' now holds whatever is after the '=' sign
 463          */
 464         p1 = str + 1;
 465
 466         /*
 467          * terminate p1 at the '-' sign
 468          */
 469         p = strchr(p1, '-');
 470         if (!p)
 471                 return 1;
 472
 473         p2 = p + 1;
 474         *p = '\0';
 475
 476         if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
 477                 return 0;
 478
 479         return 1;
 480 }
 481
 482 static int check_int(char *p, char *name, unsigned int *val)
 483 {
 484         char *str;
 485
 486         if (strncmp(p, name, strlen(name)))
 487                 return 1;
 488
 489         str = strstr(p, name);
 490         if (!str)
 491                 return 1;
 492
 493         str = strchr(p, '=');
 494         if (!str)
 495                 return 1;
 496
 497         str++;
 498
 499         if (sscanf(str, "%u", val) == 1)
 500                 return 0;
 501
 502         return 1;
 503 }
 504
 505 static int check_strset(char *p, char *name)
 506 {
 507         return strncmp(p, name, strlen(name));
 508 }
 509
 510 static int is_empty_or_comment(char *line)
 511 {
 512         unsigned int i;
 513
 514         for (i = 0; i < strlen(line); i++) {
 515                 if (line[i] == ';')
 516                         return 1;
 517                 if (!isspace(line[i]) && !iscntrl(line[i]))
 518                         return 0;
 519         }
 520
 521         return 1;
 522 }
 523
 524 static int str_rw_cb(struct thread_data *td, char *mem)
 525 {
 526         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 527                 td->ddir = DDIR_READ;
 528                 td->sequential = 1;
 529                 return 0;
 530         } else if (!strncmp(mem, "randread", 8)) {
 531                 td->ddir = DDIR_READ;
 532                 td->sequential = 0;
 533                 return 0;
 534         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 535                 td->ddir = DDIR_WRITE;
 536                 td->sequential = 1;
 537                 return 0;
 538         } else if (!strncmp(mem, "randwrite", 9)) {
 539                 td->ddir = DDIR_WRITE;
 540                 td->sequential = 0;
 541                 return 0;
 542         } else if (!strncmp(mem, "rw", 2)) {
 543                 td->ddir = 0;
 544                 td->iomix = 1;
 545                 td->sequential = 1;
 546                 return 0;
 547         } else if (!strncmp(mem, "randrw", 6)) {
 548                 td->ddir = 0;
 549                 td->iomix = 1;
 550                 td->sequential = 0;
 551                 return 0;
 552         }
 553
 554         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 555         return 1;
 556 }
 557
 558 static int str_verify_cb(struct thread_data *td, char *mem)
 559 {
 560         if (!strncmp(mem, "0", 1)) {
 561                 td->verify = VERIFY_NONE;
 562                 return 0;
 563         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 564                 td->verify = VERIFY_MD5;
 565                 return 0;
 566         } else if (!strncmp(mem, "crc32", 5)) {
 567                 td->verify = VERIFY_CRC32;
 568                 return 0;
 569         }
 570
 571         log_err("fio: verify types: md5, crc32\n");
 572         return 1;
 573 }
 574
 575 static int str_mem_cb(struct thread_data *td, char *mem)
 576 {
 577         if (!strncmp(mem, "malloc", 6)) {
 578                 td->mem_type = MEM_MALLOC;
 579                 return 0;
 580         } else if (!strncmp(mem, "shm", 3)) {
 581                 td->mem_type = MEM_SHM;
 582                 return 0;
 583         } else if (!strncmp(mem, "mmap", 4)) {
 584                 td->mem_type = MEM_MMAP;
 585                 return 0;
 586         }
 587
 588         log_err("fio: mem type: malloc, shm, mmap\n");
 589         return 1;
 590 }
 591
 592 static int str_ioengine_cb(struct thread_data *td, char *str)
 593 {
 594         if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
 595             !strncmp(str, "libaio", 6)) {
 596                 strcpy(td->io_engine_name, "libaio");
 597                 td->io_engine = FIO_LIBAIO;
 598                 return 0;
 599         } else if (!strncmp(str, "posixaio", 8)) {
 600                 strcpy(td->io_engine_name, "posixaio");
 601                 td->io_engine = FIO_POSIXAIO;
 602                 return 0;
 603         } else if (!strncmp(str, "sync", 4)) {
 604                 strcpy(td->io_engine_name, "sync");
 605                 td->io_engine = FIO_SYNCIO;
 606                 return 0;
 607         } else if (!strncmp(str, "mmap", 4)) {
 608                 strcpy(td->io_engine_name, "mmap");
 609                 td->io_engine = FIO_MMAPIO;
 610                 return 0;
 611         } else if (!strncmp(str, "sgio", 4)) {
 612                 strcpy(td->io_engine_name, "sgio");
 613                 td->io_engine = FIO_SGIO;
 614                 return 0;
 615         } else if (!strncmp(str, "splice", 6)) {
 616                 strcpy(td->io_engine_name, "splice");
 617                 td->io_engine = FIO_SPLICEIO;
 618                 return 0;
 619         }
 620
 621         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice\n");
 622         return 1;
 623 }
 624
 625 /*
 626  * This is our [ini] type file parser.
 627  */
 628 int parse_jobs_ini(char *file, int stonewall_flag)
 629 {
 630         unsigned int prioclass, prio, cpu, global, il;
 631         unsigned long long ull;
 632         unsigned long ul1, ul2;
 633         struct thread_data *td;
 634         char *string, *name, *tmpbuf;
 635         fpos_t off;
 636         FILE *f;
 637         char *p;
 638         int ret = 0, stonewall;
 639
 640         f = fopen(file, "r");
 641         if (!f) {
 642                 perror("fopen job file");
 643                 return 1;
 644         }
 645
 646         string = malloc(4096);
 647         name = malloc(256);
 648         tmpbuf = malloc(4096);
 649
 650         stonewall = stonewall_flag;
 651         while ((p = fgets(string, 4096, f)) != NULL) {
 652                 if (ret)
 653                         break;
 654                 if (is_empty_or_comment(p))
 655                         continue;
 656                 if (sscanf(p, "[%s]", name) != 1)
 657                         continue;
 658
 659                 global = !strncmp(name, "global", 6);
 660
 661                 name[strlen(name) - 1] = '\0';
 662
 663                 td = get_new_job(global, &def_thread);
 664                 if (!td) {
 665                         ret = 1;
 666                         break;
 667                 }
 668
 669                 /*
 670                  * Seperate multiple job files by a stonewall
 671                  */
 672                 if (!global && stonewall) {
 673                         td->stonewall = stonewall;
 674                         stonewall = 0;
 675                 }
 676
 677                 fgetpos(f, &off);
 678                 while ((p = fgets(string, 4096, f)) != NULL) {
 679                         if (is_empty_or_comment(p))
 680                                 continue;
 681                         if (strstr(p, "["))
 682                                 break;
 683                         strip_blank_front(&p);
 684                         strip_blank_end(p);
 685
 686                         if (!check_int(p, "prio", &prio)) {
 687 #ifndef FIO_HAVE_IOPRIO
 688                                 log_err("io priorities not available\n");
 689                                 ret = 1;
 690                                 break;
 691 #endif
 692                                 td->ioprio |= prio;
 693                                 fgetpos(f, &off);
 694                                 continue;
 695                         }
 696                         if (!check_int(p, "prioclass", &prioclass)) {
 697 #ifndef FIO_HAVE_IOPRIO
 698                                 log_err("io priorities not available\n");
 699                                 ret = 1;
 700                                 break;
 701 #else
 702                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 703                                 fgetpos(f, &off);
 704                                 continue;
 705 #endif
 706                         }
 707                         if (!check_int(p, "direct", &il)) {
 708                                 td->odirect = il;
 709                                 fgetpos(f, &off);
 710                                 continue;
 711                         }
 712                         if (!check_int(p, "rand_repeatable", &il)) {
 713                                 td->rand_repeatable = il;
 714                                 fgetpos(f, &off);
 715                                 continue;
 716                         }
 717                         if (!check_int(p, "rate", &td->rate)) {
 718                                 fgetpos(f, &off);
 719                                 continue;
 720                         }
 721                         if (!check_int(p, "ratemin", &td->ratemin)) {
 722                                 fgetpos(f, &off);
 723                                 continue;
 724                         }
 725                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 726                                 fgetpos(f, &off);
 727                                 continue;
 728                         }
 729                         if (!check_int(p, "thinktime", &td->thinktime)) {
 730                                 fgetpos(f, &off);
 731                                 continue;
 732                         }
 733                         if (!check_int(p, "cpumask", &cpu)) {
 734 #ifndef FIO_HAVE_CPU_AFFINITY
 735                                 log_err("cpu affinity not available\n");
 736                                 ret = 1;
 737                                 break;
 738 #endif
 739                                 fill_cpu_mask(td->cpumask, cpu);
 740                                 fgetpos(f, &off);
 741                                 continue;
 742                         }
 743                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 744                                 fgetpos(f, &off);
 745                                 td->end_fsync = 1;
 746                                 continue;
 747                         }
 748                         if (!check_int(p, "startdelay", &td->start_delay)) {
 749                                 fgetpos(f, &off);
 750                                 continue;
 751                         }
 752                         if (!check_str_time(p, "timeout", &ull)) {
 753                                 td->timeout = ul1;
 754                                 fgetpos(f, &off);
 755                                 continue;
 756                         }
 757                         if (!check_int(p, "invalidate", &il)) {
 758                                 td->invalidate_cache = il;
 759                                 fgetpos(f, &off);
 760                                 continue;
 761                         }
 762                         if (!check_int(p, "iodepth", &td->iodepth)) {
 763                                 fgetpos(f, &off);
 764                                 continue;
 765                         }
 766                         if (!check_int(p, "sync", &il)) {
 767                                 td->sync_io = il;
 768                                 fgetpos(f, &off);
 769                                 continue;
 770                         }
 771                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 772                                 fgetpos(f, &off);
 773                                 continue;
 774                         }
 775                         if (!check_int(p, "create_serialize", &il)) {
 776                                 td->create_serialize = il;
 777                                 fgetpos(f, &off);
 778                                 continue;
 779                         }
 780                         if (!check_int(p, "create_fsync", &il)) {
 781                                 td->create_fsync = il;
 782                                 fgetpos(f, &off);
 783                                 continue;
 784                         }
 785                         if (!check_int(p, "end_fsync", &il)) {
 786                                 td->end_fsync = il;
 787                                 fgetpos(f, &off);
 788                                 continue;
 789                         }
 790                         if (!check_int(p, "loops", &td->loops)) {
 791                                 fgetpos(f, &off);
 792                                 continue;
 793                         }
 794                         if (!check_int(p, "numjobs", &td->numjobs)) {
 795                                 fgetpos(f, &off);
 796                                 continue;
 797                         }
 798                         if (!check_int(p, "overwrite", &il)) {
 799                                 td->overwrite = il;
 800                                 fgetpos(f, &off);
 801                                 continue;
 802                         }
 803                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 804                                 fgetpos(f, &off);
 805                                 continue;
 806                         }
 807                         if (!check_int(p, "rwmixread", &il)) {
 808                                 if (il > 100)
 809                                         il = 100;
 810                                 td->rwmixread = il;
 811                                 fgetpos(f, &off);
 812                                 continue;
 813                         }
 814                         if (!check_int(p, "rwmixwrite", &il)) {
 815                                 if (il > 100)
 816                                         il = 100;
 817                                 td->rwmixread = 100 - il;
 818                                 fgetpos(f, &off);
 819                                 continue;
 820                         }
 821                         if (!check_int(p, "nice", &td->nice)) {
 822                                 fgetpos(f, &off);
 823                                 continue;
 824                         }
 825                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
 826                                 if (ul1 > ul2) {
 827                                         td->max_bs = ul1;
 828                                         td->min_bs = ul2;
 829                                 } else {
 830                                         td->max_bs = ul2;
 831                                         td->min_bs = ul1;
 832                                 }
 833                                 fgetpos(f, &off);
 834                                 continue;
 835                         }
 836                         if (!check_str_bytes(p, "bs", &ull)) {
 837                                 td->bs = ull;
 838                                 fgetpos(f, &off);
 839                                 continue;
 840                         }
 841                         if (!check_str_bytes(p, "size", &td->file_size)) {
 842                                 fgetpos(f, &off);
 843                                 continue;
 844                         }
 845                         if (!check_str_bytes(p, "offset", &td->file_offset)) {
 846                                 fgetpos(f, &off);
 847                                 continue;
 848                         }
 849                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
 850                                 fgetpos(f, &off);
 851                                 continue;
 852                         }
 853                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
 854                                 fgetpos(f, &off);
 855                                 continue;
 856                         }
 857                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
 858                                 fgetpos(f, &off);
 859                                 continue;
 860                         }
 861                         if (!check_strstore(p, "directory", tmpbuf)) {
 862                                 td->directory = strdup(tmpbuf);
 863                                 fgetpos(f, &off);
 864                                 continue;
 865                         }
 866                         if (!check_strstore(p, "name", tmpbuf)) {
 867                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 868                                 fgetpos(f, &off);
 869                                 continue;
 870                         }
 871                         if (!check_str(p, "mem", str_mem_cb, td)) {
 872                                 fgetpos(f, &off);
 873                                 continue;
 874                         }
 875                         if (!check_str(p, "verify", str_verify_cb, td)) {
 876                                 fgetpos(f, &off);
 877                                 continue;
 878                         }
 879                         if (!check_str(p, "rw", str_rw_cb, td)) {
 880                                 fgetpos(f, &off);
 881                                 continue;
 882                         }
 883                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 884                                 fgetpos(f, &off);
 885                                 continue;
 886                         }
 887                         if (!check_strset(p, "create")) {
 888                                 td->create_file = 1;
 889                                 fgetpos(f, &off);
 890                                 continue;
 891                         }
 892                         if (!check_strset(p, "exitall")) {
 893                                 exitall_on_terminate = 1;
 894                                 fgetpos(f, &off);
 895                                 continue;
 896                         }
 897                         if (!check_strset(p, "stonewall")) {
 898                                 td->stonewall = 1;
 899                                 fgetpos(f, &off);
 900                                 continue;
 901                         }
 902                         if (!check_strset(p, "thread")) {
 903                                 td->use_thread = 1;
 904                                 fgetpos(f, &off);
 905                                 continue;
 906                         }
 907                         if (!check_strstore(p, "iolog", tmpbuf)) {
 908                                 if (td->write_iolog) {
 909                                         log_err("fio: read iolog overrides given write_iolog\n");
 910                                         free(td->iolog_file);
 911                                         td->write_iolog = 0;
 912                                 }
 913                                 td->iolog_file = strdup(tmpbuf);
 914                                 td->read_iolog = 1;
 915                                 fgetpos(f, &off);
 916                                 continue;
 917                         }
 918                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 919                                 if (!td->read_iolog) {
 920                                         td->iolog_file = strdup(tmpbuf);
 921                                         td->write_iolog = 1;
 922                                 } else
 923                                         log_err("fio: read iolog overrides given write_iolog\n");
 924                                 fgetpos(f, &off);
 925                                 continue;
 926                         }
 927                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 928                                 td->exec_prerun = strdup(tmpbuf);
 929                                 fgetpos(f, &off);
 930                                 continue;
 931                         }
 932                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 933                                 td->exec_postrun = strdup(tmpbuf);
 934                                 fgetpos(f, &off);
 935                                 continue;
 936                         }
 937                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 938 #ifndef FIO_HAVE_IOSCHED_SWITCH
 939                                 log_err("io scheduler switching not available\n");
 940                                 ret = 1;
 941                                 break;
 942 #else
 943                                 td->ioscheduler = strdup(tmpbuf);
 944                                 fgetpos(f, &off);
 945                                 continue;
 946 #endif
 947                         }
 948
 949                         /*
 950                          * Don't break here, continue parsing options so we
 951                          * dump all the bad ones. Makes trial/error fixups
 952                          * easier on the user.
 953                          */
 954                         printf("Client%d: bad option %s\n",td->thread_number,p);
 955                         ret = 1;
 956                 }
 957
 958                 if (!ret) {
 959                         fsetpos(f, &off);
 960                         ret = add_job(td, name, 0);
 961                 }
 962                 if (ret)
 963                         break;
 964         }
 965
 966         free(string);
 967         free(name);
 968         free(tmpbuf);
 969         fclose(f);
 970         return ret;
 971 }
 972
 973 static int fill_def_thread(void)
 974 {
 975         memset(&def_thread, 0, sizeof(def_thread));
 976
 977         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
 978                 perror("sched_getaffinity");
 979                 return 1;
 980         }
 981
 982         /*
 983          * fill globals
 984          */
 985         def_thread.ddir = DDIR_READ;
 986         def_thread.iomix = 0;
 987         def_thread.bs = DEF_BS;
 988         def_thread.min_bs = -1;
 989         def_thread.max_bs = -1;
 990         def_thread.io_engine = DEF_IO_ENGINE;
 991         strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
 992         def_thread.odirect = DEF_ODIRECT;
 993         def_thread.ratecycle = DEF_RATE_CYCLE;
 994         def_thread.sequential = DEF_SEQUENTIAL;
 995         def_thread.timeout = def_timeout;
 996         def_thread.create_file = DEF_CREATE;
 997         def_thread.overwrite = DEF_OVERWRITE;
 998         def_thread.invalidate_cache = DEF_INVALIDATE;
 999         def_thread.sync_io = DEF_SYNCIO;
1000         def_thread.mem_type = MEM_MALLOC;
1001         def_thread.bw_avg_time = DEF_BWAVGTIME;
1002         def_thread.create_serialize = DEF_CREATE_SER;
1003         def_thread.create_fsync = DEF_CREATE_FSYNC;
1004         def_thread.loops = DEF_LOOPS;
1005         def_thread.verify = DEF_VERIFY;
1006         def_thread.stonewall = DEF_STONEWALL;
1007         def_thread.numjobs = DEF_NUMJOBS;
1008         def_thread.use_thread = DEF_USE_THREAD;
1009         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1010         def_thread.rwmixread = DEF_RWMIX_READ;
1011         def_thread.nice = DEF_NICE;
1012         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1013 #ifdef FIO_HAVE_DISK_UTIL
1014         def_thread.do_disk_util = 1;
1015 #endif
1016
1017         return 0;
1018 }
1019
1020 static void usage(char *name)
1021 {
1022         printf("%s\n", fio_version_string);
1023         printf("\t-o Write output to file\n");
1024         printf("\t-t Runtime in seconds\n");
1025         printf("\t-l Generate per-job latency logs\n");
1026         printf("\t-w Generate per-job bandwidth logs\n");
1027         printf("\t-m Minimal (terse) output\n");
1028         printf("\t-f Job file (Required)\n");
1029         printf("\t-v Print version info and exit\n");
1030 }
1031
1032 static int parse_cmd_line(int argc, char *argv[])
1033 {
1034         int c, idx = 1, ini_idx = 0;
1035
1036         while ((c = getopt(argc, argv, "t:o:f:lwvhm")) != EOF) {
1037                 switch (c) {
1038                         case 't':
1039                                 def_timeout = atoi(optarg);
1040                                 idx++;
1041                                 break;
1042                         case 'f':
1043                                 ini_idx++;
1044                                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1045                                 ini_file[ini_idx - 1] = strdup(optarg);
1046                                 idx++;
1047                                 break;
1048                         case 'l':
1049                                 write_lat_log = 1;
1050                                 idx++;
1051                                 break;
1052                         case 'w':
1053                                 write_bw_log = 1;
1054                                 idx++;
1055                                 break;
1056                         case 'o':
1057                                 f_out = fopen(optarg, "w+");
1058                                 if (!f_out) {
1059                                         perror("fopen output");
1060                                         exit(1);
1061                                 }
1062                                 f_err = f_out;
1063                                 idx++;
1064                                 break;
1065                         case 'm':
1066                                 terse_output = 1;
1067                                 idx++;
1068                                 break;
1069                         case 'h':
1070                                 usage(argv[0]);
1071                                 exit(0);
1072                         case 'v':
1073                                 printf("%s\n", fio_version_string);
1074                                 exit(0);
1075                 }
1076         }
1077
1078         while (idx < argc) {
1079                 ini_idx++;
1080                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1081                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1082                 idx++;
1083         }
1084
1085         if (!f_out) {
1086                 f_out = stdout;
1087                 f_err = stderr;
1088         }
1089
1090         return ini_idx;
1091 }
1092
1093 static void free_shm(void)
1094 {
1095         struct shmid_ds sbuf;
1096
1097         if (threads) {
1098                 shmdt((void *) threads);
1099                 threads = NULL;
1100                 shmctl(shm_id, IPC_RMID, &sbuf);
1101         }
1102 }
1103
1104 /*
1105  * The thread area is shared between the main process and the job
1106  * threads/processes. So setup a shared memory segment that will hold
1107  * all the job info.
1108  */
1109 static int setup_thread_area(void)
1110 {
1111         /*
1112          * 1024 is too much on some machines, scale max_jobs if
1113          * we get a failure that looks like too large a shm segment
1114          */
1115         do {
1116                 size_t size = max_jobs * sizeof(struct thread_data);
1117
1118                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1119                 if (shm_id != -1)
1120                         break;
1121                 if (errno != EINVAL) {
1122                         perror("shmget");
1123                         break;
1124                 }
1125
1126                 max_jobs >>= 1;
1127         } while (max_jobs);
1128
1129         if (shm_id == -1)
1130                 return 1;
1131
1132         threads = shmat(shm_id, NULL, 0);
1133         if (threads == (void *) -1) {
1134                 perror("shmat");
1135                 return 1;
1136         }
1137
1138         atexit(free_shm);
1139         return 0;
1140 }
1141
1142 int parse_options(int argc, char *argv[])
1143 {
1144         int job_files, i;
1145
1146         if (setup_thread_area())
1147                 return 1;
1148         if (fill_def_thread())
1149                 return 1;
1150
1151         job_files = parse_cmd_line(argc, argv);
1152         if (!job_files) {
1153                 log_err("Need job file(s)\n");
1154                 usage(argv[0]);
1155                 return 1;
1156         }
1157
1158         for (i = 0; i < job_files; i++) {
1159                 if (fill_def_thread())
1160                         return 1;
1161                 if (parse_jobs_ini(ini_file[i], i))
1162                         return 1;
1163                 free(ini_file[i]);
1164         }
1165
1166         free(ini_file);
1167         return 0;
1168 }