init.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <fcntl.h>
   5 #include <ctype.h>
   6 #include <string.h>
   7 #include <errno.h>
   8 #include <sys/ipc.h>
   9 #include <sys/shm.h>
  10 #include <sys/types.h>
  11 #include <sys/stat.h>
  12
  13 #include "fio.h"
  14
  15 #define DEF_BS                  (4096)
  16 #define DEF_TIMEOUT             (0)
  17 #define DEF_RATE_CYCLE          (1000)
  18 #define DEF_ODIRECT             (1)
  19 #define DEF_IO_ENGINE           (FIO_SYNCIO)
  20 #define DEF_IO_ENGINE_NAME      "sync"
  21 #define DEF_SEQUENTIAL          (1)
  22 #define DEF_RAND_REPEAT         (1)
  23 #define DEF_OVERWRITE           (1)
  24 #define DEF_CREATE              (1)
  25 #define DEF_INVALIDATE          (1)
  26 #define DEF_SYNCIO              (0)
  27 #define DEF_RANDSEED            (0xb1899bedUL)
  28 #define DEF_BWAVGTIME           (500)
  29 #define DEF_CREATE_SER          (1)
  30 #define DEF_CREATE_FSYNC        (1)
  31 #define DEF_LOOPS               (1)
  32 #define DEF_VERIFY              (0)
  33 #define DEF_STONEWALL           (0)
  34 #define DEF_NUMJOBS             (1)
  35 #define DEF_USE_THREAD          (0)
  36 #define DEF_FILE_SIZE           (1024 * 1024 * 1024UL)
  37 #define DEF_ZONE_SIZE           (0)
  38 #define DEF_ZONE_SKIP           (0)
  39 #define DEF_RWMIX_CYCLE         (500)
  40 #define DEF_RWMIX_READ          (50)
  41 #define DEF_NICE                (0)
  42
  43 static int def_timeout = DEF_TIMEOUT;
  44
  45 static char fio_version_string[] = "fio 1.4";
  46
  47 static char **ini_file;
  48 static int max_jobs = MAX_JOBS;
  49
  50 struct thread_data def_thread;
  51 struct thread_data *threads = NULL;
  52
  53 int rate_quit = 0;
  54 int write_lat_log = 0;
  55 int write_bw_log = 0;
  56 int exitall_on_terminate = 0;
  57 unsigned long long mlock_size = 0;
  58 FILE *f_out = NULL;
  59 FILE *f_err = NULL;
  60
  61 static struct thread_data *get_new_job(int global, struct thread_data *parent)
  62 {
  63         struct thread_data *td;
  64
  65         if (global)
  66                 return &def_thread;
  67         if (thread_number >= max_jobs)
  68                 return NULL;
  69
  70         td = &threads[thread_number++];
  71         *td = *parent;
  72         td->name[0] = '\0';
  73
  74         td->fd = -1;
  75         td->thread_number = thread_number;
  76         return td;
  77 }
  78
  79 static void put_job(struct thread_data *td)
  80 {
  81         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
  82         thread_number--;
  83 }
  84
  85 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
  86 {
  87         char *ddir_str[] = { "read", "write", "randread", "randwrite",
  88                              "rw", NULL, "randrw" };
  89         struct stat sb;
  90         int numjobs, ddir;
  91
  92 #ifndef FIO_HAVE_LIBAIO
  93         if (td->io_engine == FIO_LIBAIO) {
  94                 log_err("Linux libaio not available\n");
  95                 return 1;
  96         }
  97 #endif
  98 #ifndef FIO_HAVE_POSIXAIO
  99         if (td->io_engine == FIO_POSIXAIO) {
 100                 log_err("posix aio not available\n");
 101                 return 1;
 102         }
 103 #endif
 104
 105         /*
 106          * the def_thread is just for options, it's not a real job
 107          */
 108         if (td == &def_thread)
 109                 return 0;
 110
 111         if (td->io_engine & FIO_SYNCIO)
 112                 td->iodepth = 1;
 113         else {
 114                 if (!td->iodepth)
 115                         td->iodepth = 1;
 116         }
 117
 118         /*
 119          * only really works for sequential io for now
 120          */
 121         if (td->zone_size && !td->sequential)
 122                 td->zone_size = 0;
 123
 124         td->filetype = FIO_TYPE_FILE;
 125         if (!stat(jobname, &sb)) {
 126                 if (S_ISBLK(sb.st_mode))
 127                         td->filetype = FIO_TYPE_BD;
 128                 else if (S_ISCHR(sb.st_mode))
 129                         td->filetype = FIO_TYPE_CHAR;
 130         }
 131
 132         if (td->filetype == FIO_TYPE_FILE) {
 133                 char tmp[PATH_MAX];
 134
 135                 if (td->directory && td->directory[0] != '\0')
 136                         sprintf(tmp, "%s/%s.%d", td->directory, jobname, td->thread_number);
 137                 else
 138                         sprintf(tmp, "%s.%d", jobname, td->thread_number);
 139                 td->file_name = strdup(tmp);
 140         } else
 141                 td->file_name = strdup(jobname);
 142
 143         fio_sem_init(&td->mutex, 0);
 144
 145         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 146         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 147         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 148
 149         if (td->min_bs == -1U)
 150                 td->min_bs = td->bs;
 151         if (td->max_bs == -1U)
 152                 td->max_bs = td->bs;
 153         if (td_read(td) && !td_rw(td))
 154                 td->verify = 0;
 155
 156         if (td->stonewall && td->thread_number > 1)
 157                 groupid++;
 158
 159         td->groupid = groupid;
 160
 161         if (setup_rate(td))
 162                 goto err;
 163
 164         if (write_lat_log) {
 165                 setup_log(&td->slat_log);
 166                 setup_log(&td->clat_log);
 167         }
 168         if (write_bw_log)
 169                 setup_log(&td->bw_log);
 170
 171         if (td->name[0] == '\0')
 172                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
 173
 174         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 175
 176         if (!job_add_num)
 177                 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);
 178         else if (job_add_num == 1)
 179                 fprintf(f_out, "...\n");
 180
 181         /*
 182          * recurse add identical jobs, clear numjobs and stonewall options
 183          * as they don't apply to sub-jobs
 184          */
 185         numjobs = td->numjobs;
 186         while (--numjobs) {
 187                 struct thread_data *td_new = get_new_job(0, td);
 188
 189                 if (!td_new)
 190                         goto err;
 191
 192                 td_new->numjobs = 1;
 193                 td_new->stonewall = 0;
 194                 job_add_num = numjobs - 1;
 195
 196                 if (add_job(td_new, jobname, job_add_num))
 197                         goto err;
 198         }
 199         return 0;
 200 err:
 201         put_job(td);
 202         return -1;
 203 }
 204
 205 int init_random_state(struct thread_data *td)
 206 {
 207         unsigned long seeds[4];
 208         int fd, num_maps, blocks;
 209
 210         fd = open("/dev/urandom", O_RDONLY);
 211         if (fd == -1) {
 212                 td_verror(td, errno);
 213                 return 1;
 214         }
 215
 216         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 217                 td_verror(td, EIO);
 218                 close(fd);
 219                 return 1;
 220         }
 221
 222         close(fd);
 223
 224         os_random_seed(seeds[0], &td->bsrange_state);
 225         os_random_seed(seeds[1], &td->verify_state);
 226         os_random_seed(seeds[2], &td->rwmix_state);
 227
 228         if (td->sequential)
 229                 return 0;
 230
 231         if (td->rand_repeatable)
 232                 seeds[3] = DEF_RANDSEED;
 233
 234         blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
 235         num_maps = blocks / BLOCKS_PER_MAP;
 236         td->file_map = malloc(num_maps * sizeof(long));
 237         td->num_maps = num_maps;
 238         memset(td->file_map, 0, num_maps * sizeof(long));
 239
 240         os_random_seed(seeds[3], &td->random_state);
 241         return 0;
 242 }
 243
 244 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 245 {
 246 #ifdef FIO_HAVE_CPU_AFFINITY
 247         unsigned int i;
 248
 249         CPU_ZERO(&cpumask);
 250
 251         for (i = 0; i < sizeof(int) * 8; i++) {
 252                 if ((1 << i) & cpu)
 253                         CPU_SET(i, &cpumask);
 254         }
 255 #endif
 256 }
 257
 258 static unsigned long get_mult(char c)
 259 {
 260         switch (c) {
 261                 case 'k':
 262                 case 'K':
 263                         return 1024;
 264                 case 'm':
 265                 case 'M':
 266                         return 1024 * 1024;
 267                 case 'g':
 268                 case 'G':
 269                         return 1024 * 1024 * 1024;
 270                 default:
 271                         return 1;
 272         }
 273 }
 274
 275 /*
 276  * convert string after '=' into decimal value, noting any size suffix
 277  */
 278 static int str_cnv(char *p, unsigned long long *val)
 279 {
 280         char *str;
 281         int len;
 282
 283         str = strchr(p, '=');
 284         if (!str)
 285                 return 1;
 286
 287         str++;
 288         len = strlen(str);
 289
 290         *val = strtoul(str, NULL, 10);
 291         if (*val == ULONG_MAX && errno == ERANGE)
 292                 return 1;
 293
 294         *val *= get_mult(str[len - 1]);
 295         return 0;
 296 }
 297
 298 static int check_strcnv(char *p, char *name, unsigned long long *val)
 299 {
 300         if (strncmp(p, name, strlen(name) - 1))
 301                 return 1;
 302
 303         return str_cnv(p, val);
 304 }
 305
 306 static void strip_blank_front(char **p)
 307 {
 308         char *s = *p;
 309
 310         while (isspace(*s))
 311                 s++;
 312 }
 313
 314 static void strip_blank_end(char *p)
 315 {
 316         char *s = p + strlen(p) - 1;
 317
 318         while (isspace(*s) || iscntrl(*s))
 319                 s--;
 320
 321         *(s + 1) = '\0';
 322 }
 323
 324 typedef int (str_cb_fn)(struct thread_data *, char *);
 325
 326 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 327 {
 328         char *s;
 329
 330         if (strncmp(p, name, strlen(name)))
 331                 return 1;
 332
 333         s = strstr(p, name);
 334         if (!s)
 335                 return 1;
 336
 337         s = strchr(s, '=');
 338         if (!s)
 339                 return 1;
 340
 341         s++;
 342         strip_blank_front(&s);
 343         return cb(td, s);
 344 }
 345
 346 static int check_strstore(char *p, char *name, char *dest)
 347 {
 348         char *s;
 349
 350         if (strncmp(p, name, strlen(name)))
 351                 return 1;
 352
 353         s = strstr(p, name);
 354         if (!s)
 355                 return 1;
 356
 357         s = strchr(p, '=');
 358         if (!s)
 359                 return 1;
 360
 361         s++;
 362         strip_blank_front(&s);
 363
 364         strcpy(dest, s);
 365         return 0;
 366 }
 367
 368 static int __check_range(char *str, unsigned long *val)
 369 {
 370         char suffix;
 371
 372         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 373                 *val *= get_mult(suffix);
 374                 return 0;
 375         }
 376
 377         if (sscanf(str, "%lu", val) == 1)
 378                 return 0;
 379
 380         return 1;
 381 }
 382
 383 static int check_range(char *p, char *name, unsigned long *s, unsigned long *e)
 384 {
 385         char option[128];
 386         char *str, *p1, *p2;
 387
 388         if (strncmp(p, name, strlen(name)))
 389                 return 1;
 390
 391         strcpy(option, p);
 392         p = option;
 393
 394         str = strstr(p, name);
 395         if (!str)
 396                 return 1;
 397
 398         p += strlen(name);
 399
 400         str = strchr(p, '=');
 401         if (!str)
 402                 return 1;
 403
 404         /*
 405          * 'p' now holds whatever is after the '=' sign
 406          */
 407         p1 = str + 1;
 408
 409         /*
 410          * terminate p1 at the '-' sign
 411          */
 412         p = strchr(p1, '-');
 413         if (!p)
 414                 return 1;
 415
 416         p2 = p + 1;
 417         *p = '\0';
 418
 419         if (!__check_range(p1, s) && !__check_range(p2, e))
 420                 return 0;
 421
 422         return 1;
 423 }
 424
 425 static int check_int(char *p, char *name, unsigned int *val)
 426 {
 427         char *str;
 428
 429         if (strncmp(p, name, strlen(name)))
 430                 return 1;
 431
 432         str = strstr(p, name);
 433         if (!str)
 434                 return 1;
 435
 436         str = strchr(p, '=');
 437         if (!str)
 438                 return 1;
 439
 440         str++;
 441
 442         if (sscanf(str, "%u", val) == 1)
 443                 return 0;
 444
 445         return 1;
 446 }
 447
 448 static int check_strset(char *p, char *name)
 449 {
 450         return strncmp(p, name, strlen(name));
 451 }
 452
 453 static int is_empty_or_comment(char *line)
 454 {
 455         unsigned int i;
 456
 457         for (i = 0; i < strlen(line); i++) {
 458                 if (line[i] == ';')
 459                         return 1;
 460                 if (!isspace(line[i]) && !iscntrl(line[i]))
 461                         return 0;
 462         }
 463
 464         return 1;
 465 }
 466
 467 static int str_rw_cb(struct thread_data *td, char *mem)
 468 {
 469         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 470                 td->ddir = DDIR_READ;
 471                 td->sequential = 1;
 472                 return 0;
 473         } else if (!strncmp(mem, "randread", 8)) {
 474                 td->ddir = DDIR_READ;
 475                 td->sequential = 0;
 476                 return 0;
 477         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 478                 td->ddir = DDIR_WRITE;
 479                 td->sequential = 1;
 480                 return 0;
 481         } else if (!strncmp(mem, "randwrite", 9)) {
 482                 td->ddir = DDIR_WRITE;
 483                 td->sequential = 0;
 484                 return 0;
 485         } else if (!strncmp(mem, "rw", 2)) {
 486                 td->ddir = 0;
 487                 td->iomix = 1;
 488                 td->sequential = 1;
 489                 return 0;
 490         } else if (!strncmp(mem, "randrw", 6)) {
 491                 td->ddir = 0;
 492                 td->iomix = 1;
 493                 td->sequential = 0;
 494                 return 0;
 495         }
 496
 497         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 498         return 1;
 499 }
 500
 501 static int str_verify_cb(struct thread_data *td, char *mem)
 502 {
 503         if (!strncmp(mem, "0", 1)) {
 504                 td->verify = VERIFY_NONE;
 505                 return 0;
 506         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 507                 td->verify = VERIFY_MD5;
 508                 return 0;
 509         } else if (!strncmp(mem, "crc32", 5)) {
 510                 td->verify = VERIFY_CRC32;
 511                 return 0;
 512         }
 513
 514         log_err("fio: verify types: md5, crc32\n");
 515         return 1;
 516 }
 517
 518 static int str_mem_cb(struct thread_data *td, char *mem)
 519 {
 520         if (!strncmp(mem, "malloc", 6)) {
 521                 td->mem_type = MEM_MALLOC;
 522                 return 0;
 523         } else if (!strncmp(mem, "shm", 3)) {
 524                 td->mem_type = MEM_SHM;
 525                 return 0;
 526         } else if (!strncmp(mem, "mmap", 4)) {
 527                 td->mem_type = MEM_MMAP;
 528                 return 0;
 529         }
 530
 531         log_err("fio: mem type: malloc, shm, mmap\n");
 532         return 1;
 533 }
 534
 535 static int str_ioengine_cb(struct thread_data *td, char *str)
 536 {
 537         if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
 538             !strncmp(str, "libaio", 6)) {
 539                 strcpy(td->io_engine_name, "libaio");
 540                 td->io_engine = FIO_LIBAIO;
 541                 return 0;
 542         } else if (!strncmp(str, "posixaio", 8)) {
 543                 strcpy(td->io_engine_name, "posixaio");
 544                 td->io_engine = FIO_POSIXAIO;
 545                 return 0;
 546         } else if (!strncmp(str, "sync", 4)) {
 547                 strcpy(td->io_engine_name, "sync");
 548                 td->io_engine = FIO_SYNCIO;
 549                 return 0;
 550         } else if (!strncmp(str, "mmap", 4)) {
 551                 strcpy(td->io_engine_name, "mmap");
 552                 td->io_engine = FIO_MMAPIO;
 553                 return 0;
 554         } else if (!strncmp(str, "sgio", 4)) {
 555                 strcpy(td->io_engine_name, "sgio");
 556                 td->io_engine = FIO_SGIO;
 557                 return 0;
 558         } else if (!strncmp(str, "splice", 6)) {
 559                 strcpy(td->io_engine_name, "splice");
 560                 td->io_engine = FIO_SPLICEIO;
 561                 return 0;
 562         }
 563
 564         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice\n");
 565         return 1;
 566 }
 567
 568 /*
 569  * This is our [ini] type file parser.
 570  */
 571 int parse_jobs_ini(char *file)
 572 {
 573         unsigned int prioclass, prio, cpu, global, il;
 574         unsigned long long ull;
 575         unsigned long ul1, ul2;
 576         struct thread_data *td;
 577         char *string, *name, *tmpbuf;
 578         fpos_t off;
 579         FILE *f;
 580         char *p;
 581         int ret = 0, stonewall = 1;
 582
 583         f = fopen(file, "r");
 584         if (!f) {
 585                 perror("fopen job file");
 586                 return 1;
 587         }
 588
 589         string = malloc(4096);
 590         name = malloc(256);
 591         tmpbuf = malloc(4096);
 592
 593         while ((p = fgets(string, 4096, f)) != NULL) {
 594                 if (ret)
 595                         break;
 596                 if (is_empty_or_comment(p))
 597                         continue;
 598                 if (sscanf(p, "[%s]", name) != 1)
 599                         continue;
 600
 601                 global = !strncmp(name, "global", 6);
 602
 603                 name[strlen(name) - 1] = '\0';
 604
 605                 td = get_new_job(global, &def_thread);
 606                 if (!td) {
 607                         ret = 1;
 608                         break;
 609                 }
 610
 611                 /*
 612                  * Seperate multiple job files by a stonewall
 613                  */
 614                 if (!global && stonewall) {
 615                         td->stonewall = stonewall;
 616                         stonewall = 0;
 617                 }
 618
 619                 fgetpos(f, &off);
 620                 while ((p = fgets(string, 4096, f)) != NULL) {
 621                         if (is_empty_or_comment(p))
 622                                 continue;
 623                         if (strstr(p, "["))
 624                                 break;
 625                         strip_blank_front(&p);
 626                         strip_blank_end(p);
 627
 628                         if (!check_int(p, "prio", &prio)) {
 629 #ifndef FIO_HAVE_IOPRIO
 630                                 log_err("io priorities not available\n");
 631                                 ret = 1;
 632                                 break;
 633 #endif
 634                                 td->ioprio |= prio;
 635                                 fgetpos(f, &off);
 636                                 continue;
 637                         }
 638                         if (!check_int(p, "prioclass", &prioclass)) {
 639 #ifndef FIO_HAVE_IOPRIO
 640                                 log_err("io priorities not available\n");
 641                                 ret = 1;
 642                                 break;
 643 #else
 644                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 645                                 fgetpos(f, &off);
 646                                 continue;
 647 #endif
 648                         }
 649                         if (!check_int(p, "direct", &il)) {
 650                                 td->odirect = il;
 651                                 fgetpos(f, &off);
 652                                 continue;
 653                         }
 654                         if (!check_int(p, "rand_repeatable", &il)) {
 655                                 td->rand_repeatable = il;
 656                                 fgetpos(f, &off);
 657                                 continue;
 658                         }
 659                         if (!check_int(p, "rate", &td->rate)) {
 660                                 fgetpos(f, &off);
 661                                 continue;
 662                         }
 663                         if (!check_int(p, "ratemin", &td->ratemin)) {
 664                                 fgetpos(f, &off);
 665                                 continue;
 666                         }
 667                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 668                                 fgetpos(f, &off);
 669                                 continue;
 670                         }
 671                         if (!check_int(p, "thinktime", &td->thinktime)) {
 672                                 fgetpos(f, &off);
 673                                 continue;
 674                         }
 675                         if (!check_int(p, "cpumask", &cpu)) {
 676 #ifndef FIO_HAVE_CPU_AFFINITY
 677                                 log_err("cpu affinity not available\n");
 678                                 ret = 1;
 679                                 break;
 680 #endif
 681                                 fill_cpu_mask(td->cpumask, cpu);
 682                                 fgetpos(f, &off);
 683                                 continue;
 684                         }
 685                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 686                                 fgetpos(f, &off);
 687                                 td->end_fsync = 1;
 688                                 continue;
 689                         }
 690                         if (!check_int(p, "startdelay", &td->start_delay)) {
 691                                 fgetpos(f, &off);
 692                                 continue;
 693                         }
 694                         if (!check_int(p, "timeout", &td->timeout)) {
 695                                 fgetpos(f, &off);
 696                                 continue;
 697                         }
 698                         if (!check_int(p, "invalidate", &il)) {
 699                                 td->invalidate_cache = il;
 700                                 fgetpos(f, &off);
 701                                 continue;
 702                         }
 703                         if (!check_int(p, "iodepth", &td->iodepth)) {
 704                                 fgetpos(f, &off);
 705                                 continue;
 706                         }
 707                         if (!check_int(p, "sync", &il)) {
 708                                 td->sync_io = il;
 709                                 fgetpos(f, &off);
 710                                 continue;
 711                         }
 712                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 713                                 fgetpos(f, &off);
 714                                 continue;
 715                         }
 716                         if (!check_int(p, "create_serialize", &il)) {
 717                                 td->create_serialize = il;
 718                                 fgetpos(f, &off);
 719                                 continue;
 720                         }
 721                         if (!check_int(p, "create_fsync", &il)) {
 722                                 td->create_fsync = il;
 723                                 fgetpos(f, &off);
 724                                 continue;
 725                         }
 726                         if (!check_int(p, "end_fsync", &il)) {
 727                                 td->end_fsync = il;
 728                                 fgetpos(f, &off);
 729                                 continue;
 730                         }
 731                         if (!check_int(p, "loops", &td->loops)) {
 732                                 fgetpos(f, &off);
 733                                 continue;
 734                         }
 735                         if (!check_int(p, "numjobs", &td->numjobs)) {
 736                                 fgetpos(f, &off);
 737                                 continue;
 738                         }
 739                         if (!check_int(p, "overwrite", &il)) {
 740                                 td->overwrite = il;
 741                                 fgetpos(f, &off);
 742                                 continue;
 743                         }
 744                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 745                                 fgetpos(f, &off);
 746                                 continue;
 747                         }
 748                         if (!check_int(p, "rwmixread", &il)) {
 749                                 if (il > 100)
 750                                         il = 100;
 751                                 td->rwmixread = il;
 752                                 fgetpos(f, &off);
 753                                 continue;
 754                         }
 755                         if (!check_int(p, "rwmixwrite", &il)) {
 756                                 if (il > 100)
 757                                         il = 100;
 758                                 td->rwmixread = 100 - il;
 759                                 fgetpos(f, &off);
 760                                 continue;
 761                         }
 762                         if (!check_int(p, "nice", &td->nice)) {
 763                                 fgetpos(f, &off);
 764                                 continue;
 765                         }
 766                         if (!check_range(p, "bsrange", &ul1, &ul2)) {
 767                                 if (ul1 > ul2) {
 768                                         td->max_bs = ul1;
 769                                         td->min_bs = ul2;
 770                                 } else {
 771                                         td->max_bs = ul2;
 772                                         td->min_bs = ul1;
 773                                 }
 774                                 fgetpos(f, &off);
 775                                 continue;
 776                         }
 777                         if (!check_strcnv(p, "bs", &ull)) {
 778                                 td->bs = ull;
 779                                 fgetpos(f, &off);
 780                                 continue;
 781                         }
 782                         if (!check_strcnv(p, "size", &td->file_size)) {
 783                                 fgetpos(f, &off);
 784                                 continue;
 785                         }
 786                         if (!check_strcnv(p, "offset", &td->file_offset)) {
 787                                 fgetpos(f, &off);
 788                                 continue;
 789                         }
 790                         if (!check_strcnv(p, "zonesize", &td->zone_size)) {
 791                                 fgetpos(f, &off);
 792                                 continue;
 793                         }
 794                         if (!check_strcnv(p, "zoneskip", &td->zone_skip)) {
 795                                 fgetpos(f, &off);
 796                                 continue;
 797                         }
 798                         if (!check_strcnv(p, "lockmem", &mlock_size)) {
 799                                 fgetpos(f, &off);
 800                                 continue;
 801                         }
 802                         if (!check_strstore(p, "directory", tmpbuf)) {
 803                                 td->directory = strdup(tmpbuf);
 804                                 fgetpos(f, &off);
 805                                 continue;
 806                         }
 807                         if (!check_strstore(p, "name", tmpbuf)) {
 808                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
 809                                 fgetpos(f, &off);
 810                                 continue;
 811                         }
 812                         if (!check_str(p, "mem", str_mem_cb, td)) {
 813                                 fgetpos(f, &off);
 814                                 continue;
 815                         }
 816                         if (!check_str(p, "verify", str_verify_cb, td)) {
 817                                 fgetpos(f, &off);
 818                                 continue;
 819                         }
 820                         if (!check_str(p, "rw", str_rw_cb, td)) {
 821                                 fgetpos(f, &off);
 822                                 continue;
 823                         }
 824                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 825                                 fgetpos(f, &off);
 826                                 continue;
 827                         }
 828                         if (!check_strset(p, "create")) {
 829                                 td->create_file = 1;
 830                                 fgetpos(f, &off);
 831                                 continue;
 832                         }
 833                         if (!check_strset(p, "exitall")) {
 834                                 exitall_on_terminate = 1;
 835                                 fgetpos(f, &off);
 836                                 continue;
 837                         }
 838                         if (!check_strset(p, "stonewall")) {
 839                                 td->stonewall = 1;
 840                                 fgetpos(f, &off);
 841                                 continue;
 842                         }
 843                         if (!check_strset(p, "thread")) {
 844                                 td->use_thread = 1;
 845                                 fgetpos(f, &off);
 846                                 continue;
 847                         }
 848                         if (!check_strstore(p, "iolog", tmpbuf)) {
 849                                 if (td->write_iolog) {
 850                                         log_err("fio: read iolog overrides given write_iolog\n");
 851                                         free(td->iolog_file);
 852                                         td->write_iolog = 0;
 853                                 }
 854                                 td->iolog_file = strdup(tmpbuf);
 855                                 td->read_iolog = 1;
 856                                 fgetpos(f, &off);
 857                                 continue;
 858                         }
 859                         if (!check_strstore(p, "write_iolog", tmpbuf)) {
 860                                 if (!td->read_iolog) {
 861                                         td->iolog_file = strdup(tmpbuf);
 862                                         td->write_iolog = 1;
 863                                 } else
 864                                         log_err("fio: read iolog overrides given write_iolog\n");
 865                                 fgetpos(f, &off);
 866                                 continue;
 867                         }
 868                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
 869                                 td->exec_prerun = strdup(tmpbuf);
 870                                 fgetpos(f, &off);
 871                                 continue;
 872                         }
 873                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
 874                                 td->exec_postrun = strdup(tmpbuf);
 875                                 fgetpos(f, &off);
 876                                 continue;
 877                         }
 878                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
 879 #ifndef FIO_HAVE_IOSCHED_SWITCH
 880                                 log_err("io scheduler switching not available\n");
 881                                 ret = 1;
 882                                 break;
 883 #else
 884                                 td->ioscheduler = strdup(tmpbuf);
 885                                 fgetpos(f, &off);
 886                                 continue;
 887 #endif
 888                         }
 889
 890                         /*
 891                          * Don't break here, continue parsing options so we
 892                          * dump all the bad ones. Makes trial/error fixups
 893                          * easier on the user.
 894                          */
 895                         printf("Client%d: bad option %s\n",td->thread_number,p);
 896                         ret = 1;
 897                 }
 898
 899                 if (!ret) {
 900                         fsetpos(f, &off);
 901                         ret = add_job(td, name, 0);
 902                 }
 903                 if (ret)
 904                         break;
 905         }
 906
 907         free(string);
 908         free(name);
 909         free(tmpbuf);
 910         fclose(f);
 911         return ret;
 912 }
 913
 914 static int fill_def_thread(void)
 915 {
 916         memset(&def_thread, 0, sizeof(def_thread));
 917
 918         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
 919                 perror("sched_getaffinity");
 920                 return 1;
 921         }
 922
 923         /*
 924          * fill globals
 925          */
 926         def_thread.ddir = DDIR_READ;
 927         def_thread.iomix = 0;
 928         def_thread.bs = DEF_BS;
 929         def_thread.min_bs = -1;
 930         def_thread.max_bs = -1;
 931         def_thread.io_engine = DEF_IO_ENGINE;
 932         strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
 933         def_thread.odirect = DEF_ODIRECT;
 934         def_thread.ratecycle = DEF_RATE_CYCLE;
 935         def_thread.sequential = DEF_SEQUENTIAL;
 936         def_thread.timeout = def_timeout;
 937         def_thread.create_file = DEF_CREATE;
 938         def_thread.overwrite = DEF_OVERWRITE;
 939         def_thread.invalidate_cache = DEF_INVALIDATE;
 940         def_thread.sync_io = DEF_SYNCIO;
 941         def_thread.mem_type = MEM_MALLOC;
 942         def_thread.bw_avg_time = DEF_BWAVGTIME;
 943         def_thread.create_serialize = DEF_CREATE_SER;
 944         def_thread.create_fsync = DEF_CREATE_FSYNC;
 945         def_thread.loops = DEF_LOOPS;
 946         def_thread.verify = DEF_VERIFY;
 947         def_thread.stonewall = DEF_STONEWALL;
 948         def_thread.numjobs = DEF_NUMJOBS;
 949         def_thread.use_thread = DEF_USE_THREAD;
 950         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
 951         def_thread.rwmixread = DEF_RWMIX_READ;
 952         def_thread.nice = DEF_NICE;
 953         def_thread.rand_repeatable = DEF_RAND_REPEAT;
 954 #ifdef FIO_HAVE_DISK_UTIL
 955         def_thread.do_disk_util = 1;
 956 #endif
 957
 958         return 0;
 959 }
 960
 961 static void usage(char *name)
 962 {
 963         printf("%s\n", fio_version_string);
 964         printf("\t-s IO is sequential\n");
 965         printf("\t-b Block size in KiB for each IO\n");
 966         printf("\t-t Runtime in seconds\n");
 967         printf("\t-R Exit all threads on failure to meet rate goal\n");
 968         printf("\t-o Use O_DIRECT\n");
 969         printf("\t-l Generate per-job latency logs\n");
 970         printf("\t-w Generate per-job bandwidth logs\n");
 971         printf("\t-f Job file (Required)\n");
 972         printf("\t-v Print version info and exit\n");
 973 }
 974
 975 static int parse_cmd_line(int argc, char *argv[])
 976 {
 977         int c, idx = 1, ini_idx = 0;
 978
 979         while ((c = getopt(argc, argv, "t:o:f:lwvh")) != EOF) {
 980                 switch (c) {
 981                         case 't':
 982                                 def_timeout = atoi(optarg);
 983                                 idx++;
 984                                 break;
 985                         case 'f':
 986                                 ini_idx++;
 987                                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
 988                                 ini_file[ini_idx - 1] = strdup(optarg);
 989                                 idx++;
 990                                 break;
 991                         case 'l':
 992                                 write_lat_log = 1;
 993                                 idx++;
 994                                 break;
 995                         case 'w':
 996                                 write_bw_log = 1;
 997                                 idx++;
 998                                 break;
 999                         case 'o':
1000                                 f_out = fopen(optarg, "w+");
1001                                 if (!f_out) {
1002                                         perror("fopen output");
1003                                         exit(1);
1004                                 }
1005                                 f_err = f_out;
1006                                 idx++;
1007                                 break;
1008                         case 'h':
1009                                 usage(argv[0]);
1010                                 exit(0);
1011                         case 'v':
1012                                 printf("%s\n", fio_version_string);
1013                                 exit(0);
1014                 }
1015         }
1016
1017         while (idx < argc) {
1018                 ini_idx++;
1019                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1020                 ini_file[ini_idx - 1] = strdup(argv[idx]);
1021                 idx++;
1022         }
1023
1024         if (!f_out) {
1025                 f_out = stdout;
1026                 f_err = stderr;
1027         }
1028
1029         return ini_idx;
1030 }
1031
1032 static void free_shm(void)
1033 {
1034         struct shmid_ds sbuf;
1035
1036         if (threads) {
1037                 shmdt((void *) threads);
1038                 threads = NULL;
1039                 shmctl(shm_id, IPC_RMID, &sbuf);
1040         }
1041 }
1042
1043 static int setup_thread_area(void)
1044 {
1045         /*
1046          * 1024 is too much on some machines, scale max_jobs if
1047          * we get a failure that looks like too large a shm segment
1048          */
1049         do {
1050                 int s = max_jobs * sizeof(struct thread_data);
1051
1052                 shm_id = shmget(0, s, IPC_CREAT | 0600);
1053                 if (shm_id != -1)
1054                         break;
1055                 if (errno != EINVAL) {
1056                         perror("shmget");
1057                         break;
1058                 }
1059
1060                 max_jobs >>= 1;
1061         } while (max_jobs);
1062
1063         if (shm_id == -1)
1064                 return 1;
1065
1066         threads = shmat(shm_id, NULL, 0);
1067         if (threads == (void *) -1) {
1068                 perror("shmat");
1069                 return 1;
1070         }
1071
1072         atexit(free_shm);
1073         return 0;
1074 }
1075
1076 int parse_options(int argc, char *argv[])
1077 {
1078         int job_files, i;
1079
1080         if (setup_thread_area())
1081                 return 1;
1082         if (fill_def_thread())
1083                 return 1;
1084
1085         job_files = parse_cmd_line(argc, argv);
1086         if (!job_files) {
1087                 log_err("Need job file(s)\n");
1088                 usage(argv[0]);
1089                 return 1;
1090         }
1091
1092         for (i = 0; i < job_files; i++) {
1093                 if (fill_def_thread())
1094                         return 1;
1095                 if (parse_jobs_ini(ini_file[i]))
1096                         return 1;
1097                 free(ini_file[i]);
1098         }
1099
1100         free(ini_file);
1101         return 0;
1102 }