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_ops->flags & 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_ops->flags & 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_ops->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 (!str)
 598                 str = DEF_IO_ENGINE_NAME;
 599
 600         td->io_ops = load_ioengine(td, str);
 601         if (td->io_ops)
 602                 return 0;
 603
 604         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
 605         return 1;
 606 }
 607
 608 /*
 609  * This is our [ini] type file parser.
 610  */
 611 int parse_jobs_ini(char *file, int stonewall_flag)
 612 {
 613         unsigned int prioclass, prio, cpu, global, il;
 614         unsigned long long ull;
 615         unsigned long ul1, ul2;
 616         struct thread_data *td;
 617         char *string, *name, *tmpbuf;
 618         fpos_t off;
 619         FILE *f;
 620         char *p;
 621         int ret = 0, stonewall;
 622
 623         f = fopen(file, "r");
 624         if (!f) {
 625                 perror("fopen job file");
 626                 return 1;
 627         }
 628
 629         string = malloc(4096);
 630         name = malloc(256);
 631         tmpbuf = malloc(4096);
 632
 633         stonewall = stonewall_flag;
 634         while ((p = fgets(string, 4096, f)) != NULL) {
 635                 if (ret)
 636                         break;
 637                 if (is_empty_or_comment(p))
 638                         continue;
 639                 if (sscanf(p, "[%s]", name) != 1)
 640                         continue;
 641
 642                 global = !strncmp(name, "global", 6);
 643
 644                 name[strlen(name) - 1] = '\0';
 645
 646                 td = get_new_job(global, &def_thread);
 647                 if (!td) {
 648                         ret = 1;
 649                         break;
 650                 }
 651
 652                 /*
 653                  * Seperate multiple job files by a stonewall
 654                  */
 655                 if (!global && stonewall) {
 656                         td->stonewall = stonewall;
 657                         stonewall = 0;
 658                 }
 659
 660                 fgetpos(f, &off);
 661                 while ((p = fgets(string, 4096, f)) != NULL) {
 662                         if (is_empty_or_comment(p))
 663                                 continue;
 664                         if (strstr(p, "["))
 665                                 break;
 666                         strip_blank_front(&p);
 667                         strip_blank_end(p);
 668
 669                         if (!check_int(p, "prio", &prio)) {
 670 #ifndef FIO_HAVE_IOPRIO
 671                                 log_err("io priorities not available\n");
 672                                 ret = 1;
 673                                 break;
 674 #endif
 675                                 td->ioprio |= prio;
 676                                 fgetpos(f, &off);
 677                                 continue;
 678                         }
 679                         if (!check_int(p, "prioclass", &prioclass)) {
 680 #ifndef FIO_HAVE_IOPRIO
 681                                 log_err("io priorities not available\n");
 682                                 ret = 1;
 683                                 break;
 684 #else
 685                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 686                                 fgetpos(f, &off);
 687                                 continue;
 688 #endif
 689                         }
 690                         if (!check_int(p, "direct", &il)) {
 691                                 td->odirect = il;
 692                                 fgetpos(f, &off);
 693                                 continue;
 694                         }
 695                         if (!check_int(p, "rand_repeatable", &il)) {
 696                                 td->rand_repeatable = il;
 697                                 fgetpos(f, &off);
 698                                 continue;
 699                         }
 700                         if (!check_int(p, "rate", &td->rate)) {
 701                                 fgetpos(f, &off);
 702                                 continue;
 703                         }
 704                         if (!check_int(p, "ratemin", &td->ratemin)) {
 705                                 fgetpos(f, &off);
 706                                 continue;
 707                         }
 708                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 709                                 fgetpos(f, &off);
 710                                 continue;
 711                         }
 712                         if (!check_int(p, "cpuload", &td->cpuload)) {
 713                                 fgetpos(f, &off);
 714                                 continue;
 715                         }
 716                         if (!check_int(p, "cpuchunks", &td->cpucycle)) {
 717                                 fgetpos(f, &off);
 718                                 continue;
 719                         }
 720                         if (!check_int(p, "thinktime", &td->thinktime)) {
 721                                 fgetpos(f, &off);
 722                                 continue;
 723                         }
 724                         if (!check_int(p, "cpumask", &cpu)) {
 725 #ifndef FIO_HAVE_CPU_AFFINITY
 726                                 log_err("cpu affinity not available\n");
 727                                 ret = 1;
 728                                 break;
 729 #endif
 730                                 fill_cpu_mask(td->cpumask, cpu);
 731                                 fgetpos(f, &off);
 732                                 continue;
 733                         }
 734                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 735                                 fgetpos(f, &off);
 736                                 td->end_fsync = 1;
 737                                 continue;
 738                         }
 739                         if (!check_int(p, "startdelay", &td->start_delay)) {
 740                                 fgetpos(f, &off);
 741                                 continue;
 742                         }
 743                         if (!check_str_time(p, "timeout", &ull)) {
 744                                 td->timeout = ull;
 745                                 fgetpos(f, &off);
 746                                 continue;
 747                         }
 748                         if (!check_int(p, "invalidate", &il)) {
 749                                 td->invalidate_cache = il;
 750                                 fgetpos(f, &off);
 751                                 continue;
 752                         }
 753                         if (!check_int(p, "iodepth", &td->iodepth)) {
 754                                 fgetpos(f, &off);
 755                                 continue;
 756                         }
 757                         if (!check_int(p, "sync", &il)) {
 758                                 td->sync_io = il;
 759                                 fgetpos(f, &off);
 760                                 continue;
 761                         }
 762                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 763                                 fgetpos(f, &off);
 764                                 continue;
 765                         }
 766                         if (!check_int(p, "create_serialize", &il)) {
 767                                 td->create_serialize = il;
 768                                 fgetpos(f, &off);
 769                                 continue;
 770                         }
 771                         if (!check_int(p, "create_fsync", &il)) {
 772                                 td->create_fsync = il;
 773                                 fgetpos(f, &off);
 774                                 continue;
 775                         }
 776                         if (!check_int(p, "end_fsync", &il)) {
 777                                 td->end_fsync = il;
 778                                 fgetpos(f, &off);
 779                                 continue;
 780                         }
 781                         if (!check_int(p, "loops", &td->loops)) {
 782                                 fgetpos(f, &off);
 783                                 continue;
 784                         }
 785                         if (!check_int(p, "numjobs", &td->numjobs)) {
 786                                 fgetpos(f, &off);
 787                                 continue;
 788                         }
 789                         if (!check_int(p, "overwrite", &il)) {
 790                                 td->overwrite = il;
 791                                 fgetpos(f, &off);
 792                                 continue;
 793                         }
 794                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 795                                 fgetpos(f, &off);
 796                                 continue;
 797                         }
 798                         if (!check_int(p, "rwmixread", &il)) {
 799                                 if (il > 100)
 800                                         il = 100;
 801                                 td->rwmixread = il;
 802                                 fgetpos(f, &off);
 803                                 continue;
 804                         }
 805                         if (!check_int(p, "rwmixwrite", &il)) {
 806                                 if (il > 100)
 807                                         il = 100;
 808                                 td->rwmixread = 100 - il;
 809                                 fgetpos(f, &off);
 810                                 continue;
 811                         }
 812                         if (!check_int(p, "nice", &td->nice)) {
 813                                 fgetpos(f, &off);
 814                                 continue;
 815                         }
 816                         if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
 817                                 if (ul1 > ul2) {
 818                                         td->max_bs = ul1;
 819                                         td->min_bs = ul2;
 820                                 } else {
 821                                         td->max_bs = ul2;
 822                                         td->min_bs = ul1;
 823                                 }
 824                                 fgetpos(f, &off);
 825                                 continue;
 826                         }
 827                         if (!check_str_bytes(p, "bs", &ull)) {
 828                                 td->bs = ull;
 829                                 fgetpos(f, &off);
 830                                 continue;
 831                         }
 832                         if (!check_str_bytes(p, "size", &td->file_size)) {
 833                                 fgetpos(f, &off);
 834                                 continue;
 835                         }
 836                         if (!check_str_bytes(p, "offset", &td->file_offset)) {
 837                                 fgetpos(f, &off);
 838                                 continue;
 839                         }
 840                         if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
 841                                 fgetpos(f, &off);
 842                                 continue;
 843                         }
 844                         if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
 845                                 fgetpos(f, &off);
 846                                 continue;
 847                         }
 848                         if (!check_str_bytes(p, "lockmem", &mlock_size)) {
 849                                 fgetpos(f, &off);
 850                                 continue;
 851                         }
 852                         if (!check_strstore(p, "directory", tmpbuf)) {
 853                                 td->directory = strdup(tmpbuf);
 854                                 fgetpos(f, &off);
 855                                 continue;
 856                         }
 857                         if (!check_strstore(p, "name", tmpbuf)) {
 858                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 859                                 fgetpos(f, &off);
 860                                 continue;
 861                         }
 862                         if (!check_str(p, "mem", str_mem_cb, td)) {
 863                                 fgetpos(f, &off);
 864                                 continue;
 865                         }
 866                         if (!check_str(p, "verify", str_verify_cb, td)) {
 867                                 fgetpos(f, &off);
 868                                 continue;
 869                         }
 870                         if (!check_str(p, "rw", str_rw_cb, td)) {
 871                                 fgetpos(f, &off);
 872                                 continue;
 873                         }
 874                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 875                                 fgetpos(f, &off);
 876                                 continue;
 877                         }
 878                         if (!check_strset(p, "create")) {
 879                                 td->create_file = 1;
 880                                 fgetpos(f, &off);
 881                                 continue;
 882                         }
 883                         if (!check_strset(p, "exitall")) {
 884                                 exitall_on_terminate = 1;
 885                                 fgetpos(f, &off);
 886                                 continue;
 887                         }
 888                         if (!check_strset(p, "stonewall")) {
 889                                 td->stonewall = 1;
 890                                 fgetpos(f, &off);
 891                                 continue;
 892                         }
 893                         if (!check_strset(p, "thread")) {
 894                                 td->use_thread = 1;
 895                                 fgetpos(f, &off);
 896                                 continue;
 897                         }
 898                         if (!check_strstore(p, "iolog", tmpbuf)) {
 899                                 if (td->write_iolog) {
 900                                         log_err("fio: read iolog overrides given write_iolog\n");
 901                                         free(td->iolog_file);
 902                                         td->write_iolog = 0;
 903                                 }
 904                                 td->iolog_file = strdup(tmpbuf);
 905                                 td->read_iolog = 1;
 906                                 fgetpos(f, &off);
 907                                 continue;
 908                         }
 909                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 910                                 if (!td->read_iolog) {
 911                                         td->iolog_file = strdup(tmpbuf);
 912                                         td->write_iolog = 1;
 913                                 } else
 914                                         log_err("fio: read iolog overrides given write_iolog\n");
 915                                 fgetpos(f, &off);
 916                                 continue;
 917                         }
 918                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 919                                 td->exec_prerun = strdup(tmpbuf);
 920                                 fgetpos(f, &off);
 921                                 continue;
 922                         }
 923                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 924                                 td->exec_postrun = strdup(tmpbuf);
 925                                 fgetpos(f, &off);
 926                                 continue;
 927                         }
 928                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 929 #ifndef FIO_HAVE_IOSCHED_SWITCH
 930                                 log_err("io scheduler switching not available\n");
 931                                 ret = 1;
 932                                 break;
 933 #else
 934                                 td->ioscheduler = strdup(tmpbuf);
 935                                 fgetpos(f, &off);
 936                                 continue;
 937 #endif
 938                         }
 939
 940                         /*
 941                          * Don't break here, continue parsing options so we
 942                          * dump all the bad ones. Makes trial/error fixups
 943                          * easier on the user.
 944                          */
 945                         printf("Client%d: bad option %s\n",td->thread_number,p);
 946                         ret = 1;
 947                 }
 948
 949                 if (!ret) {
 950                         fsetpos(f, &off);
 951                         ret = add_job(td, name, 0);
 952                 }
 953                 if (ret)
 954                         break;
 955         }
 956
 957         free(string);
 958         free(name);
 959         free(tmpbuf);
 960         fclose(f);
 961         return ret;
 962 }
 963
 964 static int fill_def_thread(void)
 965 {
 966         memset(&def_thread, 0, sizeof(def_thread));
 967
 968         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
 969                 perror("sched_getaffinity");
 970                 return 1;
 971         }
 972
 973         /*
 974          * fill globals
 975          */
 976         def_thread.ddir = DDIR_READ;
 977         def_thread.iomix = 0;
 978         def_thread.bs = DEF_BS;
 979         def_thread.min_bs = -1;
 980         def_thread.max_bs = -1;
 981         def_thread.odirect = DEF_ODIRECT;
 982         def_thread.ratecycle = DEF_RATE_CYCLE;
 983         def_thread.sequential = DEF_SEQUENTIAL;
 984         def_thread.timeout = def_timeout;
 985         def_thread.create_file = DEF_CREATE;
 986         def_thread.overwrite = DEF_OVERWRITE;
 987         def_thread.invalidate_cache = DEF_INVALIDATE;
 988         def_thread.sync_io = DEF_SYNCIO;
 989         def_thread.mem_type = MEM_MALLOC;
 990         def_thread.bw_avg_time = DEF_BWAVGTIME;
 991         def_thread.create_serialize = DEF_CREATE_SER;
 992         def_thread.create_fsync = DEF_CREATE_FSYNC;
 993         def_thread.loops = DEF_LOOPS;
 994         def_thread.verify = DEF_VERIFY;
 995         def_thread.stonewall = DEF_STONEWALL;
 996         def_thread.numjobs = DEF_NUMJOBS;
 997         def_thread.use_thread = DEF_USE_THREAD;
 998         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
 999         def_thread.rwmixread = DEF_RWMIX_READ;
1000         def_thread.nice = DEF_NICE;
1001         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1002 #ifdef FIO_HAVE_DISK_UTIL
1003         def_thread.do_disk_util = 1;
1004 #endif
1005
1006         return 0;
1007 }
1008
1009 static void usage(char *name)
1010 {
1011         printf("%s\n", fio_version_string);
1012         printf("\t-o Write output to file\n");
1013         printf("\t-t Runtime in seconds\n");
1014         printf("\t-l Generate per-job latency logs\n");
1015         printf("\t-w Generate per-job bandwidth logs\n");
1016         printf("\t-m Minimal (terse) output\n");
1017         printf("\t-v Print version info and exit\n");
1018 }
1019
1020 static int parse_cmd_line(int argc, char *argv[])
1021 {
1022         int c, idx = 1, ini_idx = 0;
1023
1024         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1025                 switch (c) {
1026                         case 't':
1027                                 def_timeout = atoi(optarg);
1028                                 idx = optind;
1029                                 break;
1030                         case 'l':
1031                                 write_lat_log = 1;
1032                                 idx = optind;
1033                                 break;
1034                         case 'w':
1035                                 write_bw_log = 1;
1036                                 idx = optind;
1037                                 break;
1038                         case 'o':
1039                                 f_out = fopen(optarg, "w+");
1040                                 if (!f_out) {
1041                                         perror("fopen output");
1042                                         exit(1);
1043                                 }
1044                                 f_err = f_out;
1045                                 idx = optind;
1046                                 break;
1047                         case 'm':
1048                                 terse_output = 1;
1049                                 idx = optind;
1050                                 break;
1051                         case 'h':
1052                                 usage(argv[0]);
1053                                 exit(0);
1054                         case 'v':
1055                                 printf("%s\n", fio_version_string);
1056                                 exit(0);
1057                 }
1058         }
1059
1060         while (idx < argc) {
1061                 ini_idx++;
1062                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1063                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1064                 idx++;
1065         }
1066
1067         if (!f_out) {
1068                 f_out = stdout;
1069                 f_err = stderr;
1070         }
1071
1072         return ini_idx;
1073 }
1074
1075 static void free_shm(void)
1076 {
1077         struct shmid_ds sbuf;
1078
1079         if (threads) {
1080                 shmdt((void *) threads);
1081                 threads = NULL;
1082                 shmctl(shm_id, IPC_RMID, &sbuf);
1083         }
1084 }
1085
1086 /*
1087  * The thread area is shared between the main process and the job
1088  * threads/processes. So setup a shared memory segment that will hold
1089  * all the job info.
1090  */
1091 static int setup_thread_area(void)
1092 {
1093         /*
1094          * 1024 is too much on some machines, scale max_jobs if
1095          * we get a failure that looks like too large a shm segment
1096          */
1097         do {
1098                 size_t size = max_jobs * sizeof(struct thread_data);
1099
1100                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1101                 if (shm_id != -1)
1102                         break;
1103                 if (errno != EINVAL) {
1104                         perror("shmget");
1105                         break;
1106                 }
1107
1108                 max_jobs >>= 1;
1109         } while (max_jobs);
1110
1111         if (shm_id == -1)
1112                 return 1;
1113
1114         threads = shmat(shm_id, NULL, 0);
1115         if (threads == (void *) -1) {
1116                 perror("shmat");
1117                 return 1;
1118         }
1119
1120         atexit(free_shm);
1121         return 0;
1122 }
1123
1124 int parse_options(int argc, char *argv[])
1125 {
1126         int job_files, i;
1127
1128         if (setup_thread_area())
1129                 return 1;
1130         if (fill_def_thread())
1131                 return 1;
1132
1133         job_files = parse_cmd_line(argc, argv);
1134         if (!job_files) {
1135                 log_err("Need job file(s)\n");
1136                 usage(argv[0]);
1137                 return 1;
1138         }
1139
1140         for (i = 0; i < job_files; i++) {
1141                 if (fill_def_thread())
1142                         return 1;
1143                 if (parse_jobs_ini(ini_file[i], i))
1144                         return 1;
1145                 free(ini_file[i]);
1146         }
1147
1148         free(ini_file);
1149         return 0;
1150 }