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