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                         if (td->io_engine == FIO_CPUIO)
 201                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
 202                         else
 203                                 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);
 204                 } else if (job_add_num == 1)
 205                         fprintf(f_out, "...\n");
 206         }
 207
 208         /*
 209          * recurse add identical jobs, clear numjobs and stonewall options
 210          * as they don't apply to sub-jobs
 211          */
 212         numjobs = td->numjobs;
 213         while (--numjobs) {
 214                 struct thread_data *td_new = get_new_job(0, td);
 215
 216                 if (!td_new)
 217                         goto err;
 218
 219                 td_new->numjobs = 1;
 220                 td_new->stonewall = 0;
 221                 job_add_num = numjobs - 1;
 222
 223                 if (add_job(td_new, jobname, job_add_num))
 224                         goto err;
 225         }
 226         return 0;
 227 err:
 228         put_job(td);
 229         return -1;
 230 }
 231
 232 /*
 233  * Initialize the various random states we need (random io, block size ranges,
 234  * read/write mix, etc).
 235  */
 236 int init_random_state(struct thread_data *td)
 237 {
 238         unsigned long seeds[4];
 239         int fd, num_maps, blocks;
 240
 241         fd = open("/dev/urandom", O_RDONLY);
 242         if (fd == -1) {
 243                 td_verror(td, errno);
 244                 return 1;
 245         }
 246
 247         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 248                 td_verror(td, EIO);
 249                 close(fd);
 250                 return 1;
 251         }
 252
 253         close(fd);
 254
 255         os_random_seed(seeds[0], &td->bsrange_state);
 256         os_random_seed(seeds[1], &td->verify_state);
 257         os_random_seed(seeds[2], &td->rwmix_state);
 258
 259         if (td->sequential)
 260                 return 0;
 261
 262         if (td->rand_repeatable)
 263                 seeds[3] = DEF_RANDSEED;
 264
 265         blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
 266         num_maps = blocks / BLOCKS_PER_MAP;
 267         td->file_map = malloc(num_maps * sizeof(long));
 268         td->num_maps = num_maps;
 269         memset(td->file_map, 0, num_maps * sizeof(long));
 270
 271         os_random_seed(seeds[3], &td->random_state);
 272         return 0;
 273 }
 274
 275 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 276 {
 277 #ifdef FIO_HAVE_CPU_AFFINITY
 278         unsigned int i;
 279
 280         CPU_ZERO(&cpumask);
 281
 282         for (i = 0; i < sizeof(int) * 8; i++) {
 283                 if ((1 << i) & cpu)
 284                         CPU_SET(i, &cpumask);
 285         }
 286 #endif
 287 }
 288
 289 static unsigned long get_mult_time(char c)
 290 {
 291         switch (c) {
 292                 case 'm':
 293                 case 'M':
 294                         return 60;
 295                 case 'h':
 296                 case 'H':
 297                         return 60 * 60;
 298                 case 'd':
 299                 case 'D':
 300                         return 24 * 60 * 60;
 301                 default:
 302                         return 1;
 303         }
 304 }
 305
 306 static unsigned long get_mult_bytes(char c)
 307 {
 308         switch (c) {
 309                 case 'k':
 310                 case 'K':
 311                         return 1024;
 312                 case 'm':
 313                 case 'M':
 314                         return 1024 * 1024;
 315                 case 'g':
 316                 case 'G':
 317                         return 1024 * 1024 * 1024;
 318                 default:
 319                         return 1;
 320         }
 321 }
 322
 323 /*
 324  * convert string after '=' into decimal value, noting any size suffix
 325  */
 326 static int str_to_decimal(char *p, unsigned long long *val, int kilo)
 327 {
 328         char *str;
 329         int len;
 330
 331         str = strchr(p, '=');
 332         if (!str)
 333                 return 1;
 334
 335         str++;
 336         len = strlen(str);
 337
 338         *val = strtoul(str, NULL, 10);
 339         if (*val == ULONG_MAX && errno == ERANGE)
 340                 return 1;
 341
 342         if (kilo)
 343                 *val *= get_mult_bytes(str[len - 1]);
 344         else
 345                 *val *= get_mult_time(str[len - 1]);
 346         return 0;
 347 }
 348
 349 static int check_str_bytes(char *p, char *name, unsigned long long *val)
 350 {
 351         if (strncmp(p, name, strlen(name) - 1))
 352                 return 1;
 353
 354         return str_to_decimal(p, val, 1);
 355 }
 356
 357 static int check_str_time(char *p, char *name, unsigned long long *val)
 358 {
 359         if (strncmp(p, name, strlen(name) - 1))
 360                 return 1;
 361
 362         return str_to_decimal(p, val, 0);
 363 }
 364
 365 static void strip_blank_front(char **p)
 366 {
 367         char *s = *p;
 368
 369         while (isspace(*s))
 370                 s++;
 371 }
 372
 373 static void strip_blank_end(char *p)
 374 {
 375         char *s = p + strlen(p) - 1;
 376
 377         while (isspace(*s) || iscntrl(*s))
 378                 s--;
 379
 380         *(s + 1) = '\0';
 381 }
 382
 383 typedef int (str_cb_fn)(struct thread_data *, char *);
 384
 385 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 386 {
 387         char *s;
 388
 389         if (strncmp(p, name, strlen(name)))
 390                 return 1;
 391
 392         s = strstr(p, name);
 393         if (!s)
 394                 return 1;
 395
 396         s = strchr(s, '=');
 397         if (!s)
 398                 return 1;
 399
 400         s++;
 401         strip_blank_front(&s);
 402         return cb(td, s);
 403 }
 404
 405 static int check_strstore(char *p, char *name, char *dest)
 406 {
 407         char *s;
 408
 409         if (strncmp(p, name, strlen(name)))
 410                 return 1;
 411
 412         s = strstr(p, name);
 413         if (!s)
 414                 return 1;
 415
 416         s = strchr(p, '=');
 417         if (!s)
 418                 return 1;
 419
 420         s++;
 421         strip_blank_front(&s);
 422
 423         strcpy(dest, s);
 424         return 0;
 425 }
 426
 427 static int __check_range_bytes(char *str, unsigned long *val)
 428 {
 429         char suffix;
 430
 431         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 432                 *val *= get_mult_bytes(suffix);
 433                 return 0;
 434         }
 435
 436         if (sscanf(str, "%lu", val) == 1)
 437                 return 0;
 438
 439         return 1;
 440 }
 441
 442 static int check_range_bytes(char *p, char *name, unsigned long *s,
 443                              unsigned long *e)
 444 {
 445         char option[128];
 446         char *str, *p1, *p2;
 447
 448         if (strncmp(p, name, strlen(name)))
 449                 return 1;
 450
 451         strcpy(option, p);
 452         p = option;
 453
 454         str = strstr(p, name);
 455         if (!str)
 456                 return 1;
 457
 458         p += strlen(name);
 459
 460         str = strchr(p, '=');
 461         if (!str)
 462                 return 1;
 463
 464         /*
 465          * 'p' now holds whatever is after the '=' sign
 466          */
 467         p1 = str + 1;
 468
 469         /*
 470          * terminate p1 at the '-' sign
 471          */
 472         p = strchr(p1, '-');
 473         if (!p)
 474                 return 1;
 475
 476         p2 = p + 1;
 477         *p = '\0';
 478
 479         if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
 480                 return 0;
 481
 482         return 1;
 483 }
 484
 485 static int check_int(char *p, char *name, unsigned int *val)
 486 {
 487         char *str;
 488
 489         if (strncmp(p, name, strlen(name)))
 490                 return 1;
 491
 492         str = strstr(p, name);
 493         if (!str)
 494                 return 1;
 495
 496         str = strchr(p, '=');
 497         if (!str)
 498                 return 1;
 499
 500         str++;
 501
 502         if (sscanf(str, "%u", val) == 1)
 503                 return 0;
 504
 505         return 1;
 506 }
 507
 508 static int check_strset(char *p, char *name)
 509 {
 510         return strncmp(p, name, strlen(name));
 511 }
 512
 513 static int is_empty_or_comment(char *line)
 514 {
 515         unsigned int i;
 516
 517         for (i = 0; i < strlen(line); i++) {
 518                 if (line[i] == ';')
 519                         return 1;
 520                 if (!isspace(line[i]) && !iscntrl(line[i]))
 521                         return 0;
 522         }
 523
 524         return 1;
 525 }
 526
 527 static int str_rw_cb(struct thread_data *td, char *mem)
 528 {
 529         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 530                 td->ddir = DDIR_READ;
 531                 td->sequential = 1;
 532                 return 0;
 533         } else if (!strncmp(mem, "randread", 8)) {
 534                 td->ddir = DDIR_READ;
 535                 td->sequential = 0;
 536                 return 0;
 537         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 538                 td->ddir = DDIR_WRITE;
 539                 td->sequential = 1;
 540                 return 0;
 541         } else if (!strncmp(mem, "randwrite", 9)) {
 542                 td->ddir = DDIR_WRITE;
 543                 td->sequential = 0;
 544                 return 0;
 545         } else if (!strncmp(mem, "rw", 2)) {
 546                 td->ddir = 0;
 547                 td->iomix = 1;
 548                 td->sequential = 1;
 549                 return 0;
 550         } else if (!strncmp(mem, "randrw", 6)) {
 551                 td->ddir = 0;
 552                 td->iomix = 1;
 553                 td->sequential = 0;
 554                 return 0;
 555         }
 556
 557         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 558         return 1;
 559 }
 560
 561 static int str_verify_cb(struct thread_data *td, char *mem)
 562 {
 563         if (!strncmp(mem, "0", 1)) {
 564                 td->verify = VERIFY_NONE;
 565                 return 0;
 566         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 567                 td->verify = VERIFY_MD5;
 568                 return 0;
 569         } else if (!strncmp(mem, "crc32", 5)) {
 570                 td->verify = VERIFY_CRC32;
 571                 return 0;
 572         }
 573
 574         log_err("fio: verify types: md5, crc32\n");
 575         return 1;
 576 }
 577
 578 static int str_mem_cb(struct thread_data *td, char *mem)
 579 {
 580         if (!strncmp(mem, "malloc", 6)) {
 581                 td->mem_type = MEM_MALLOC;
 582                 return 0;
 583         } else if (!strncmp(mem, "shm", 3)) {
 584                 td->mem_type = MEM_SHM;
 585                 return 0;
 586         } else if (!strncmp(mem, "mmap", 4)) {
 587                 td->mem_type = MEM_MMAP;
 588                 return 0;
 589         }
 590
 591         log_err("fio: mem type: malloc, shm, mmap\n");
 592         return 1;
 593 }
 594
 595 static int str_ioengine_cb(struct thread_data *td, char *str)
 596 {
 597         if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
 598             !strncmp(str, "libaio", 6)) {
 599                 strcpy(td->io_engine_name, "libaio");
 600                 td->io_engine = FIO_LIBAIO;
 601                 return 0;
 602         } else if (!strncmp(str, "posixaio", 8)) {
 603                 strcpy(td->io_engine_name, "posixaio");
 604                 td->io_engine = FIO_POSIXAIO;
 605                 return 0;
 606         } else if (!strncmp(str, "sync", 4)) {
 607                 strcpy(td->io_engine_name, "sync");
 608                 td->io_engine = FIO_SYNCIO;
 609                 return 0;
 610         } else if (!strncmp(str, "mmap", 4)) {
 611                 strcpy(td->io_engine_name, "mmap");
 612                 td->io_engine = FIO_MMAPIO;
 613                 return 0;
 614         } else if (!strncmp(str, "sgio", 4)) {
 615                 strcpy(td->io_engine_name, "sgio");
 616                 td->io_engine = FIO_SGIO;
 617                 return 0;
 618         } else if (!strncmp(str, "splice", 6)) {
 619                 strcpy(td->io_engine_name, "splice");
 620                 td->io_engine = FIO_SPLICEIO;
 621                 return 0;
 622         } else if (!strncmp(str, "cpu", 3)) {
 623                 strcpy(td->io_engine_name, "cpu");
 624                 td->io_engine = FIO_CPUIO;
 625                 return 0;
 626         }
 627
 628         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
 629         return 1;
 630 }
 631
 632 /*
 633  * This is our [ini] type file parser.
 634  */
 635 int parse_jobs_ini(char *file, int stonewall_flag)
 636 {
 637         unsigned int prioclass, prio, cpu, global, il;
 638         unsigned long long ull;
 639         unsigned long ul1, ul2;
 640         struct thread_data *td;
 641         char *string, *name, *tmpbuf;
 642         fpos_t off;
 643         FILE *f;
 644         char *p;
 645         int ret = 0, stonewall;
 646
 647         f = fopen(file, "r");
 648         if (!f) {
 649                 perror("fopen job file");
 650                 return 1;
 651         }
 652
 653         string = malloc(4096);
 654         name = malloc(256);
 655         tmpbuf = malloc(4096);
 656
 657         stonewall = stonewall_flag;
 658         while ((p = fgets(string, 4096, f)) != NULL) {
 659                 if (ret)
 660                         break;
 661                 if (is_empty_or_comment(p))
 662                         continue;
 663                 if (sscanf(p, "[%s]", name) != 1)
 664                         continue;
 665
 666                 global = !strncmp(name, "global", 6);
 667
 668                 name[strlen(name) - 1] = '\0';
 669
 670                 td = get_new_job(global, &def_thread);
 671                 if (!td) {
 672                         ret = 1;
 673                         break;
 674                 }
 675
 676                 /*
 677                  * Seperate multiple job files by a stonewall
 678                  */
 679                 if (!global && stonewall) {
 680                         td->stonewall = stonewall;
 681                         stonewall = 0;
 682                 }
 683
 684                 fgetpos(f, &off);
 685                 while ((p = fgets(string, 4096, f)) != NULL) {
 686                         if (is_empty_or_comment(p))
 687                                 continue;
 688                         if (strstr(p, "["))
 689                                 break;
 690                         strip_blank_front(&p);
 691                         strip_blank_end(p);
 692
 693                         if (!check_int(p, "prio", &prio)) {
 694 #ifndef FIO_HAVE_IOPRIO
 695                                 log_err("io priorities not available\n");
 696                                 ret = 1;
 697                                 break;
 698 #endif
 699                                 td->ioprio |= prio;
 700                                 fgetpos(f, &off);
 701                                 continue;
 702                         }
 703                         if (!check_int(p, "prioclass", &prioclass)) {
 704 #ifndef FIO_HAVE_IOPRIO
 705                                 log_err("io priorities not available\n");
 706                                 ret = 1;
 707                                 break;
 708 #else
 709                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 710                                 fgetpos(f, &off);
 711                                 continue;
 712 #endif
 713                         }
 714                         if (!check_int(p, "direct", &il)) {
 715                                 td->odirect = il;
 716                                 fgetpos(f, &off);
 717                                 continue;
 718                         }
 719                         if (!check_int(p, "rand_repeatable", &il)) {
 720                                 td->rand_repeatable = il;
 721                                 fgetpos(f, &off);
 722                                 continue;
 723                         }
 724                         if (!check_int(p, "rate", &td->rate)) {
 725                                 fgetpos(f, &off);
 726                                 continue;
 727                         }
 728                         if (!check_int(p, "ratemin", &td->ratemin)) {
 729                                 fgetpos(f, &off);
 730                                 continue;
 731                         }
 732                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 733                                 fgetpos(f, &off);
 734                                 continue;
 735                         }
 736                         if (!check_int(p, "cpuload", &td->cpuload)) {
 737                                 fgetpos(f, &off);
 738                                 continue;
 739                         }
 740                         if (!check_int(p, "cpuchunks", &td->cpucycle)) {
 741                                 fgetpos(f, &off);
 742                                 continue;
 743                         }
 744                         if (!check_int(p, "thinktime", &td->thinktime)) {
 745                                 fgetpos(f, &off);
 746                                 continue;
 747                         }
 748                         if (!check_int(p, "cpumask", &cpu)) {
 749 #ifndef FIO_HAVE_CPU_AFFINITY
 750                                 log_err("cpu affinity not available\n");
 751                                 ret = 1;
 752                                 break;
 753 #endif
 754                                 fill_cpu_mask(td->cpumask, cpu);
 755                                 fgetpos(f, &off);
 756                                 continue;
 757                         }
 758                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 759                                 fgetpos(f, &off);
 760                                 td->end_fsync = 1;
 761                                 continue;
 762                         }
 763                         if (!check_int(p, "startdelay", &td->start_delay)) {
 764                                 fgetpos(f, &off);
 765                                 continue;
 766                         }
 767                         if (!check_str_time(p, "timeout", &ull)) {
 768                                 td->timeout = ull;
 769                                 fgetpos(f, &off);
 770                                 continue;
 771                         }
 772                         if (!check_int(p, "invalidate", &il)) {
 773                                 td->invalidate_cache = il;
 774                                 fgetpos(f, &off);
 775                                 continue;
 776                         }
 777                         if (!check_int(p, "iodepth", &td->iodepth)) {
 778                                 fgetpos(f, &off);
 779                                 continue;
 780                         }
 781                         if (!check_int(p, "sync", &il)) {
 782                                 td->sync_io = il;
 783                                 fgetpos(f, &off);
 784                                 continue;
 785                         }
 786                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 787                                 fgetpos(f, &off);
 788                                 continue;
 789                         }
 790                         if (!check_int(p, "create_serialize", &il)) {
 791                                 td->create_serialize = il;
 792                                 fgetpos(f, &off);
 793                                 continue;
 794                         }
 795                         if (!check_int(p, "create_fsync", &il)) {
 796                                 td->create_fsync = il;
 797                                 fgetpos(f, &off);
 798                                 continue;
 799                         }
 800                         if (!check_int(p, "end_fsync", &il)) {
 801                                 td->end_fsync = il;
 802                                 fgetpos(f, &off);
 803                                 continue;
 804                         }
 805                         if (!check_int(p, "loops", &td->loops)) {
 806                                 fgetpos(f, &off);
 807                                 continue;
 808                         }
 809                         if (!check_int(p, "numjobs", &td->numjobs)) {
 810                                 fgetpos(f, &off);
 811                                 continue;
 812                         }
 813                         if (!check_int(p, "overwrite", &il)) {
 814                                 td->overwrite = il;
 815                                 fgetpos(f, &off);
 816                                 continue;
 817                         }
 818                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 819                                 fgetpos(f, &off);
 820                                 continue;
 821                         }
 822                         if (!check_int(p, "rwmixread", &il)) {
 823                                 if (il > 100)
 824                                         il = 100;
 825                                 td->rwmixread = il;
 826                                 fgetpos(f, &off);
 827                                 continue;
 828                         }
 829                         if (!check_int(p, "rwmixwrite", &il)) {
 830                                 if (il > 100)
 831                                         il = 100;
 832                                 td->rwmixread = 100 - il;
 833                                 fgetpos(f, &off);
 834                                 continue;
 835                         }
 836                         if (!check_int(p, "nice", &td->nice)) {
 837                                 fgetpos(f, &off);
 838                                 continue;
 839                         }
 840                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
 841                                 if (ul1 > ul2) {
 842                                         td->max_bs = ul1;
 843                                         td->min_bs = ul2;
 844                                 } else {
 845                                         td->max_bs = ul2;
 846                                         td->min_bs = ul1;
 847                                 }
 848                                 fgetpos(f, &off);
 849                                 continue;
 850                         }
 851                         if (!check_str_bytes(p, "bs", &ull)) {
 852                                 td->bs = ull;
 853                                 fgetpos(f, &off);
 854                                 continue;
 855                         }
 856                         if (!check_str_bytes(p, "size", &td->file_size)) {
 857                                 fgetpos(f, &off);
 858                                 continue;
 859                         }
 860                         if (!check_str_bytes(p, "offset", &td->file_offset)) {
 861                                 fgetpos(f, &off);
 862                                 continue;
 863                         }
 864                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
 865                                 fgetpos(f, &off);
 866                                 continue;
 867                         }
 868                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
 869                                 fgetpos(f, &off);
 870                                 continue;
 871                         }
 872                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
 873                                 fgetpos(f, &off);
 874                                 continue;
 875                         }
 876                         if (!check_strstore(p, "directory", tmpbuf)) {
 877                                 td->directory = strdup(tmpbuf);
 878                                 fgetpos(f, &off);
 879                                 continue;
 880                         }
 881                         if (!check_strstore(p, "name", tmpbuf)) {
 882                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 883                                 fgetpos(f, &off);
 884                                 continue;
 885                         }
 886                         if (!check_str(p, "mem", str_mem_cb, td)) {
 887                                 fgetpos(f, &off);
 888                                 continue;
 889                         }
 890                         if (!check_str(p, "verify", str_verify_cb, td)) {
 891                                 fgetpos(f, &off);
 892                                 continue;
 893                         }
 894                         if (!check_str(p, "rw", str_rw_cb, td)) {
 895                                 fgetpos(f, &off);
 896                                 continue;
 897                         }
 898                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 899                                 fgetpos(f, &off);
 900                                 continue;
 901                         }
 902                         if (!check_strset(p, "create")) {
 903                                 td->create_file = 1;
 904                                 fgetpos(f, &off);
 905                                 continue;
 906                         }
 907                         if (!check_strset(p, "exitall")) {
 908                                 exitall_on_terminate = 1;
 909                                 fgetpos(f, &off);
 910                                 continue;
 911                         }
 912                         if (!check_strset(p, "stonewall")) {
 913                                 td->stonewall = 1;
 914                                 fgetpos(f, &off);
 915                                 continue;
 916                         }
 917                         if (!check_strset(p, "thread")) {
 918                                 td->use_thread = 1;
 919                                 fgetpos(f, &off);
 920                                 continue;
 921                         }
 922                         if (!check_strstore(p, "iolog", tmpbuf)) {
 923                                 if (td->write_iolog) {
 924                                         log_err("fio: read iolog overrides given write_iolog\n");
 925                                         free(td->iolog_file);
 926                                         td->write_iolog = 0;
 927                                 }
 928                                 td->iolog_file = strdup(tmpbuf);
 929                                 td->read_iolog = 1;
 930                                 fgetpos(f, &off);
 931                                 continue;
 932                         }
 933                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 934                                 if (!td->read_iolog) {
 935                                         td->iolog_file = strdup(tmpbuf);
 936                                         td->write_iolog = 1;
 937                                 } else
 938                                         log_err("fio: read iolog overrides given write_iolog\n");
 939                                 fgetpos(f, &off);
 940                                 continue;
 941                         }
 942                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 943                                 td->exec_prerun = strdup(tmpbuf);
 944                                 fgetpos(f, &off);
 945                                 continue;
 946                         }
 947                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 948                                 td->exec_postrun = strdup(tmpbuf);
 949                                 fgetpos(f, &off);
 950                                 continue;
 951                         }
 952                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 953 #ifndef FIO_HAVE_IOSCHED_SWITCH
 954                                 log_err("io scheduler switching not available\n");
 955                                 ret = 1;
 956                                 break;
 957 #else
 958                                 td->ioscheduler = strdup(tmpbuf);
 959                                 fgetpos(f, &off);
 960                                 continue;
 961 #endif
 962                         }
 963
 964                         /*
 965                          * Don't break here, continue parsing options so we
 966                          * dump all the bad ones. Makes trial/error fixups
 967                          * easier on the user.
 968                          */
 969                         printf("Client%d: bad option %s\n",td->thread_number,p);
 970                         ret = 1;
 971                 }
 972
 973                 if (!ret) {
 974                         fsetpos(f, &off);
 975                         ret = add_job(td, name, 0);
 976                 }
 977                 if (ret)
 978                         break;
 979         }
 980
 981         free(string);
 982         free(name);
 983         free(tmpbuf);
 984         fclose(f);
 985         return ret;
 986 }
 987
 988 static int fill_def_thread(void)
 989 {
 990         memset(&def_thread, 0, sizeof(def_thread));
 991
 992         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
 993                 perror("sched_getaffinity");
 994                 return 1;
 995         }
 996
 997         /*
 998          * fill globals
 999          */
1000         def_thread.ddir = DDIR_READ;
1001         def_thread.iomix = 0;
1002         def_thread.bs = DEF_BS;
1003         def_thread.min_bs = -1;
1004         def_thread.max_bs = -1;
1005         def_thread.io_engine = DEF_IO_ENGINE;
1006         strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
1007         def_thread.odirect = DEF_ODIRECT;
1008         def_thread.ratecycle = DEF_RATE_CYCLE;
1009         def_thread.sequential = DEF_SEQUENTIAL;
1010         def_thread.timeout = def_timeout;
1011         def_thread.create_file = DEF_CREATE;
1012         def_thread.overwrite = DEF_OVERWRITE;
1013         def_thread.invalidate_cache = DEF_INVALIDATE;
1014         def_thread.sync_io = DEF_SYNCIO;
1015         def_thread.mem_type = MEM_MALLOC;
1016         def_thread.bw_avg_time = DEF_BWAVGTIME;
1017         def_thread.create_serialize = DEF_CREATE_SER;
1018         def_thread.create_fsync = DEF_CREATE_FSYNC;
1019         def_thread.loops = DEF_LOOPS;
1020         def_thread.verify = DEF_VERIFY;
1021         def_thread.stonewall = DEF_STONEWALL;
1022         def_thread.numjobs = DEF_NUMJOBS;
1023         def_thread.use_thread = DEF_USE_THREAD;
1024         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1025         def_thread.rwmixread = DEF_RWMIX_READ;
1026         def_thread.nice = DEF_NICE;
1027         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1028 #ifdef FIO_HAVE_DISK_UTIL
1029         def_thread.do_disk_util = 1;
1030 #endif
1031
1032         return 0;
1033 }
1034
1035 static void usage(char *name)
1036 {
1037         printf("%s\n", fio_version_string);
1038         printf("\t-o Write output to file\n");
1039         printf("\t-t Runtime in seconds\n");
1040         printf("\t-l Generate per-job latency logs\n");
1041         printf("\t-w Generate per-job bandwidth logs\n");
1042         printf("\t-m Minimal (terse) output\n");
1043         printf("\t-v Print version info and exit\n");
1044 }
1045
1046 static int parse_cmd_line(int argc, char *argv[])
1047 {
1048         int c, idx = 1, ini_idx = 0;
1049
1050         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1051                 switch (c) {
1052                         case 't':
1053                                 def_timeout = atoi(optarg);
1054                                 idx = optind;
1055                                 break;
1056                         case 'l':
1057                                 write_lat_log = 1;
1058                                 idx = optind;
1059                                 break;
1060                         case 'w':
1061                                 write_bw_log = 1;
1062                                 idx = optind;
1063                                 break;
1064                         case 'o':
1065                                 f_out = fopen(optarg, "w+");
1066                                 if (!f_out) {
1067                                         perror("fopen output");
1068                                         exit(1);
1069                                 }
1070                                 f_err = f_out;
1071                                 idx = optind;
1072                                 break;
1073                         case 'm':
1074                                 terse_output = 1;
1075                                 idx = optind;
1076                                 break;
1077                         case 'h':
1078                                 usage(argv[0]);
1079                                 exit(0);
1080                         case 'v':
1081                                 printf("%s\n", fio_version_string);
1082                                 exit(0);
1083                 }
1084         }
1085
1086         while (idx < argc) {
1087                 ini_idx++;
1088                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1089                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1090                 idx++;
1091         }
1092
1093         if (!f_out) {
1094                 f_out = stdout;
1095                 f_err = stderr;
1096         }
1097
1098         return ini_idx;
1099 }
1100
1101 static void free_shm(void)
1102 {
1103         struct shmid_ds sbuf;
1104
1105         if (threads) {
1106                 shmdt((void *) threads);
1107                 threads = NULL;
1108                 shmctl(shm_id, IPC_RMID, &sbuf);
1109         }
1110 }
1111
1112 /*
1113  * The thread area is shared between the main process and the job
1114  * threads/processes. So setup a shared memory segment that will hold
1115  * all the job info.
1116  */
1117 static int setup_thread_area(void)
1118 {
1119         /*
1120          * 1024 is too much on some machines, scale max_jobs if
1121          * we get a failure that looks like too large a shm segment
1122          */
1123         do {
1124                 size_t size = max_jobs * sizeof(struct thread_data);
1125
1126                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1127                 if (shm_id != -1)
1128                         break;
1129                 if (errno != EINVAL) {
1130                         perror("shmget");
1131                         break;
1132                 }
1133
1134                 max_jobs >>= 1;
1135         } while (max_jobs);
1136
1137         if (shm_id == -1)
1138                 return 1;
1139
1140         threads = shmat(shm_id, NULL, 0);
1141         if (threads == (void *) -1) {
1142                 perror("shmat");
1143                 return 1;
1144         }
1145
1146         atexit(free_shm);
1147         return 0;
1148 }
1149
1150 int parse_options(int argc, char *argv[])
1151 {
1152         int job_files, i;
1153
1154         if (setup_thread_area())
1155                 return 1;
1156         if (fill_def_thread())
1157                 return 1;
1158
1159         job_files = parse_cmd_line(argc, argv);
1160         if (!job_files) {
1161                 log_err("Need job file(s)\n");
1162                 usage(argv[0]);
1163                 return 1;
1164         }
1165
1166         for (i = 0; i < job_files; i++) {
1167                 if (fill_def_thread())
1168                         return 1;
1169                 if (parse_jobs_ini(ini_file[i], i))
1170                         return 1;
1171                 free(ini_file[i]);
1172         }
1173
1174         free(ini_file);
1175         return 0;
1176 }