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