options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163
 164 }
 165
 166 static int str_bssplit_cb(void *data, const char *input)
 167 {
 168         struct thread_data *td = data;
 169         char *str, *p, *odir, *ddir;
 170         int ret = 0;
 171
 172         p = str = strdup(input);
 173
 174         strip_blank_front(&str);
 175         strip_blank_end(str);
 176
 177         odir = strchr(str, ',');
 178         if (odir) {
 179                 ddir = strchr(odir + 1, ',');
 180                 if (ddir) {
 181                         ret = bssplit_ddir(td, DDIR_TRIM, ddir + 1);
 182                         if (!ret)
 183                                 *ddir = '\0';
 184                 } else {
 185                         char *op;
 186
 187                         op = strdup(odir + 1);
 188                         ret = bssplit_ddir(td, DDIR_TRIM, op);
 189
 190                         free(op);
 191                 }
 192                 if (!ret)
 193                         ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 194                 if (!ret) {
 195                         *odir = '\0';
 196                         ret = bssplit_ddir(td, DDIR_READ, str);
 197                 }
 198         } else {
 199                 char *op;
 200
 201                 op = strdup(str);
 202                 ret = bssplit_ddir(td, DDIR_WRITE, op);
 203                 free(op);
 204
 205                 if (!ret) {
 206                         op = strdup(str);
 207                         ret = bssplit_ddir(td, DDIR_TRIM, op);
 208                         free(op);
 209                 }
 210                 ret = bssplit_ddir(td, DDIR_READ, str);
 211         }
 212
 213         free(p);
 214         return ret;
 215 }
 216
 217 static int str2error(char *str)
 218 {
 219         const char * err[] = {"EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 220                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 221                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 222                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 223                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 224                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 225                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 226                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE"};
 227         int i = 0, num = sizeof(err) / sizeof(void *);
 228
 229         while( i < num) {
 230                 if (!strcmp(err[i], str))
 231                         return i + 1;
 232                 i++;
 233         }
 234         return 0;
 235 }
 236
 237 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 238 {
 239         unsigned int i;
 240         int *error;
 241         char *fname;
 242
 243         if (etype >= ERROR_TYPE_CNT) {
 244                 log_err("Illegal error type\n");
 245                 return 1;
 246         }
 247
 248         td->o.ignore_error_nr[etype] = 4;
 249         error = malloc(4 * sizeof(struct bssplit));
 250
 251         i = 0;
 252         while ((fname = strsep(&str, ":")) != NULL) {
 253
 254                 if (!strlen(fname))
 255                         break;
 256
 257                 /*
 258                  * grow struct buffer, if needed
 259                  */
 260                 if (i == td->o.ignore_error_nr[etype]) {
 261                         td->o.ignore_error_nr[etype] <<= 1;
 262                         error = realloc(error, td->o.ignore_error_nr[etype]
 263                                                   * sizeof(int));
 264                 }
 265                 if (fname[0] == 'E') {
 266                         error[i] = str2error(fname);
 267                 } else {
 268                         error[i] = atoi(fname);
 269                         if (error[i] < 0)
 270                                 error[i] = error[i];
 271                 }
 272                 if (!error[i]) {
 273                         log_err("Unknown error %s, please use number value \n",
 274                                   fname);
 275                         return 1;
 276                 }
 277                 i++;
 278         }
 279         if (i) {
 280                 td->o.continue_on_error |= 1 << etype;
 281                 td->o.ignore_error_nr[etype] = i;
 282                 td->o.ignore_error[etype] = error;
 283         }
 284         return 0;
 285
 286 }
 287
 288 static int str_ignore_error_cb(void *data, const char *input)
 289 {
 290         struct thread_data *td = data;
 291         char *str, *p, *n;
 292         int type = 0, ret = 1;
 293         p = str = strdup(input);
 294
 295         strip_blank_front(&str);
 296         strip_blank_end(str);
 297
 298         while (p) {
 299                 n = strchr(p, ',');
 300                 if (n)
 301                         *n++ = '\0';
 302                 ret = ignore_error_type(td, type, p);
 303                 if (ret)
 304                         break;
 305                 p = n;
 306                 type++;
 307         }
 308         free(str);
 309         return ret;
 310 }
 311
 312 static int str_rw_cb(void *data, const char *str)
 313 {
 314         struct thread_data *td = data;
 315         char *nr = get_opt_postfix(str);
 316
 317         td->o.ddir_seq_nr = 1;
 318         td->o.ddir_seq_add = 0;
 319
 320         if (!nr)
 321                 return 0;
 322
 323         if (td_random(td))
 324                 td->o.ddir_seq_nr = atoi(nr);
 325         else {
 326                 long long val;
 327
 328                 if (str_to_decimal(nr, &val, 1, td)) {
 329                         log_err("fio: rw postfix parsing failed\n");
 330                         free(nr);
 331                         return 1;
 332                 }
 333
 334                 td->o.ddir_seq_add = val;
 335         }
 336
 337         free(nr);
 338         return 0;
 339 }
 340
 341 static int str_mem_cb(void *data, const char *mem)
 342 {
 343         struct thread_data *td = data;
 344
 345         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 346                 td->mmapfile = get_opt_postfix(mem);
 347                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 348                         log_err("fio: mmaphuge:/path/to/file\n");
 349                         return 1;
 350                 }
 351         }
 352
 353         return 0;
 354 }
 355
 356 static int str_verify_cb(void *data, const char *mem)
 357 {
 358         struct thread_data *td = data;
 359
 360         if (td->o.verify == VERIFY_CRC32C_INTEL ||
 361             td->o.verify == VERIFY_CRC32C) {
 362                 crc32c_intel_probe();
 363         }
 364
 365         return 0;
 366 }
 367
 368 static int fio_clock_source_cb(void *data, const char *str)
 369 {
 370         struct thread_data *td = data;
 371
 372         fio_clock_source = td->o.clocksource;
 373         fio_time_init();
 374         return 0;
 375 }
 376
 377 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 378 {
 379         mlock_size = *val;
 380         return 0;
 381 }
 382
 383 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 384 {
 385         struct thread_data *td = data;
 386
 387         td->o.rwmix[DDIR_READ] = *val;
 388         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 389         return 0;
 390 }
 391
 392 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 393 {
 394         struct thread_data *td = data;
 395
 396         td->o.rwmix[DDIR_WRITE] = *val;
 397         td->o.rwmix[DDIR_READ] = 100 - *val;
 398         return 0;
 399 }
 400
 401 #ifdef FIO_HAVE_IOPRIO
 402 static int str_prioclass_cb(void *data, unsigned long long *val)
 403 {
 404         struct thread_data *td = data;
 405         unsigned short mask;
 406
 407         /*
 408          * mask off old class bits, str_prio_cb() may have set a default class
 409          */
 410         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 411         td->ioprio &= mask;
 412
 413         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 414         td->ioprio_set = 1;
 415         return 0;
 416 }
 417
 418 static int str_prio_cb(void *data, unsigned long long *val)
 419 {
 420         struct thread_data *td = data;
 421
 422         td->ioprio |= *val;
 423
 424         /*
 425          * If no class is set, assume BE
 426          */
 427         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 428                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 429
 430         td->ioprio_set = 1;
 431         return 0;
 432 }
 433 #endif
 434
 435 static int str_exitall_cb(void)
 436 {
 437         exitall_on_terminate = 1;
 438         return 0;
 439 }
 440
 441 #ifdef FIO_HAVE_CPU_AFFINITY
 442 static int str_cpumask_cb(void *data, unsigned long long *val)
 443 {
 444         struct thread_data *td = data;
 445         unsigned int i;
 446         long max_cpu;
 447         int ret;
 448
 449         ret = fio_cpuset_init(&td->o.cpumask);
 450         if (ret < 0) {
 451                 log_err("fio: cpuset_init failed\n");
 452                 td_verror(td, ret, "fio_cpuset_init");
 453                 return 1;
 454         }
 455
 456         max_cpu = cpus_online();
 457
 458         for (i = 0; i < sizeof(int) * 8; i++) {
 459                 if ((1 << i) & *val) {
 460                         if (i > max_cpu) {
 461                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 462                                                                 max_cpu);
 463                                 return 1;
 464                         }
 465                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 466                         fio_cpu_set(&td->o.cpumask, i);
 467                 }
 468         }
 469
 470         td->o.cpumask_set = 1;
 471         return 0;
 472 }
 473
 474 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 475                             const char *input)
 476 {
 477         char *cpu, *str, *p;
 478         long max_cpu;
 479         int ret = 0;
 480
 481         ret = fio_cpuset_init(mask);
 482         if (ret < 0) {
 483                 log_err("fio: cpuset_init failed\n");
 484                 td_verror(td, ret, "fio_cpuset_init");
 485                 return 1;
 486         }
 487
 488         p = str = strdup(input);
 489
 490         strip_blank_front(&str);
 491         strip_blank_end(str);
 492
 493         max_cpu = cpus_online();
 494
 495         while ((cpu = strsep(&str, ",")) != NULL) {
 496                 char *str2, *cpu2;
 497                 int icpu, icpu2;
 498
 499                 if (!strlen(cpu))
 500                         break;
 501
 502                 str2 = cpu;
 503                 icpu2 = -1;
 504                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 505                         if (!strlen(cpu2))
 506                                 break;
 507
 508                         icpu2 = atoi(cpu2);
 509                 }
 510
 511                 icpu = atoi(cpu);
 512                 if (icpu2 == -1)
 513                         icpu2 = icpu;
 514                 while (icpu <= icpu2) {
 515                         if (icpu >= FIO_MAX_CPUS) {
 516                                 log_err("fio: your OS only supports up to"
 517                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 518                                 ret = 1;
 519                                 break;
 520                         }
 521                         if (icpu > max_cpu) {
 522                                 log_err("fio: CPU %d too large (max=%ld)\n",
 523                                                         icpu, max_cpu);
 524                                 ret = 1;
 525                                 break;
 526                         }
 527
 528                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 529                         fio_cpu_set(mask, icpu);
 530                         icpu++;
 531                 }
 532                 if (ret)
 533                         break;
 534         }
 535
 536         free(p);
 537         if (!ret)
 538                 td->o.cpumask_set = 1;
 539         return ret;
 540 }
 541
 542 static int str_cpus_allowed_cb(void *data, const char *input)
 543 {
 544         struct thread_data *td = data;
 545         int ret;
 546
 547         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 548         if (!ret)
 549                 td->o.cpumask_set = 1;
 550
 551         return ret;
 552 }
 553
 554 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 555 {
 556         struct thread_data *td = data;
 557         int ret;
 558
 559         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 560         if (!ret)
 561                 td->o.verify_cpumask_set = 1;
 562
 563         return ret;
 564 }
 565 #endif
 566
 567 #ifdef FIO_HAVE_LIBNUMA
 568 static int str_numa_cpunodes_cb(void *data, char *input)
 569 {
 570         struct thread_data *td = data;
 571
 572         /* numa_parse_nodestring() parses a character string list
 573          * of nodes into a bit mask. The bit mask is allocated by
 574          * numa_allocate_nodemask(), so it should be freed by
 575          * numa_free_nodemask().
 576          */
 577         td->o.numa_cpunodesmask = numa_parse_nodestring(input);
 578         if (td->o.numa_cpunodesmask == NULL) {
 579                 log_err("fio: numa_parse_nodestring failed\n");
 580                 td_verror(td, 1, "str_numa_cpunodes_cb");
 581                 return 1;
 582         }
 583
 584         td->o.numa_cpumask_set = 1;
 585         return 0;
 586 }
 587
 588 static int str_numa_mpol_cb(void *data, char *input)
 589 {
 590         struct thread_data *td = data;
 591         const char * const policy_types[] =
 592                 { "default", "prefer", "bind", "interleave", "local" };
 593         int i;
 594
 595         char *nodelist = strchr(input, ':');
 596         if (nodelist) {
 597                 /* NUL-terminate mode */
 598                 *nodelist++ = '\0';
 599         }
 600
 601         for (i = 0; i <= MPOL_LOCAL; i++) {
 602                 if (!strcmp(input, policy_types[i])) {
 603                         td->o.numa_mem_mode = i;
 604                         break;
 605                 }
 606         }
 607         if (i > MPOL_LOCAL) {
 608                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 609                 goto out;
 610         }
 611
 612         switch (td->o.numa_mem_mode) {
 613         case MPOL_PREFERRED:
 614                 /*
 615                  * Insist on a nodelist of one node only
 616                  */
 617                 if (nodelist) {
 618                         char *rest = nodelist;
 619                         while (isdigit(*rest))
 620                                 rest++;
 621                         if (*rest) {
 622                                 log_err("fio: one node only for \'prefer\'\n");
 623                                 goto out;
 624                         }
 625                 } else {
 626                         log_err("fio: one node is needed for \'prefer\'\n");
 627                         goto out;
 628                 }
 629                 break;
 630         case MPOL_INTERLEAVE:
 631                 /*
 632                  * Default to online nodes with memory if no nodelist
 633                  */
 634                 if (!nodelist)
 635                         nodelist = strdup("all");
 636                 break;
 637         case MPOL_LOCAL:
 638         case MPOL_DEFAULT:
 639                 /*
 640                  * Don't allow a nodelist
 641                  */
 642                 if (nodelist) {
 643                         log_err("fio: NO nodelist for \'local\'\n");
 644                         goto out;
 645                 }
 646                 break;
 647         case MPOL_BIND:
 648                 /*
 649                  * Insist on a nodelist
 650                  */
 651                 if (!nodelist) {
 652                         log_err("fio: a nodelist is needed for \'bind\'\n");
 653                         goto out;
 654                 }
 655                 break;
 656         }
 657
 658
 659         /* numa_parse_nodestring() parses a character string list
 660          * of nodes into a bit mask. The bit mask is allocated by
 661          * numa_allocate_nodemask(), so it should be freed by
 662          * numa_free_nodemask().
 663          */
 664         switch (td->o.numa_mem_mode) {
 665         case MPOL_PREFERRED:
 666                 td->o.numa_mem_prefer_node = atoi(nodelist);
 667                 break;
 668         case MPOL_INTERLEAVE:
 669         case MPOL_BIND:
 670                 td->o.numa_memnodesmask = numa_parse_nodestring(nodelist);
 671                 if (td->o.numa_memnodesmask == NULL) {
 672                         log_err("fio: numa_parse_nodestring failed\n");
 673                         td_verror(td, 1, "str_numa_memnodes_cb");
 674                         return 1;
 675                 }
 676                 break;
 677         case MPOL_LOCAL:
 678         case MPOL_DEFAULT:
 679         default:
 680                 break;
 681         }
 682
 683         td->o.numa_memmask_set = 1;
 684         return 0;
 685
 686 out:
 687         return 1;
 688 }
 689 #endif
 690
 691 #ifdef FIO_HAVE_TRIM
 692 static int str_verify_trim_cb(void *data, unsigned long long *val)
 693 {
 694         struct thread_data *td = data;
 695
 696         td->o.trim_percentage = *val;
 697         return 0;
 698 }
 699 #endif
 700
 701 static int str_fst_cb(void *data, const char *str)
 702 {
 703         struct thread_data *td = data;
 704         char *nr = get_opt_postfix(str);
 705
 706         td->file_service_nr = 1;
 707         if (nr) {
 708                 td->file_service_nr = atoi(nr);
 709                 free(nr);
 710         }
 711
 712         return 0;
 713 }
 714
 715 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 716 static int str_sfr_cb(void *data, const char *str)
 717 {
 718         struct thread_data *td = data;
 719         char *nr = get_opt_postfix(str);
 720
 721         td->sync_file_range_nr = 1;
 722         if (nr) {
 723                 td->sync_file_range_nr = atoi(nr);
 724                 free(nr);
 725         }
 726
 727         return 0;
 728 }
 729 #endif
 730
 731 static int str_random_distribution_cb(void *data, const char *str)
 732 {
 733         struct thread_data *td = data;
 734         double val;
 735         char *nr;
 736
 737         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
 738                 return 0;
 739
 740         nr = get_opt_postfix(str);
 741         if (!nr)
 742                 val = 0.6;
 743         else if (!str_to_float(nr, &val)) {
 744                 log_err("fio: random postfix parsing failed\n");
 745                 free(nr);
 746                 return 1;
 747         }
 748
 749         td->o.zipf_theta = val;
 750         free(nr);
 751         return 0;
 752 }
 753
 754 static int check_dir(struct thread_data *td, char *fname)
 755 {
 756 #if 0
 757         char file[PATH_MAX], *dir;
 758         int elen = 0;
 759
 760         if (td->o.directory) {
 761                 strcpy(file, td->o.directory);
 762                 strcat(file, "/");
 763                 elen = strlen(file);
 764         }
 765
 766         sprintf(file + elen, "%s", fname);
 767         dir = dirname(file);
 768
 769         {
 770         struct stat sb;
 771         /*
 772          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 773          * yet, so we can't do this check right here...
 774          */
 775         if (lstat(dir, &sb) < 0) {
 776                 int ret = errno;
 777
 778                 log_err("fio: %s is not a directory\n", dir);
 779                 td_verror(td, ret, "lstat");
 780                 return 1;
 781         }
 782
 783         if (!S_ISDIR(sb.st_mode)) {
 784                 log_err("fio: %s is not a directory\n", dir);
 785                 return 1;
 786         }
 787         }
 788 #endif
 789
 790         return 0;
 791 }
 792
 793 /*
 794  * Return next file in the string. Files are separated with ':'. If the ':'
 795  * is escaped with a '\', then that ':' is part of the filename and does not
 796  * indicate a new file.
 797  */
 798 static char *get_next_file_name(char **ptr)
 799 {
 800         char *str = *ptr;
 801         char *p, *start;
 802
 803         if (!str || !strlen(str))
 804                 return NULL;
 805
 806         start = str;
 807         do {
 808                 /*
 809                  * No colon, we are done
 810                  */
 811                 p = strchr(str, ':');
 812                 if (!p) {
 813                         *ptr = NULL;
 814                         break;
 815                 }
 816
 817                 /*
 818                  * We got a colon, but it's the first character. Skip and
 819                  * continue
 820                  */
 821                 if (p == start) {
 822                         str = ++start;
 823                         continue;
 824                 }
 825
 826                 if (*(p - 1) != '\\') {
 827                         *p = '\0';
 828                         *ptr = p + 1;
 829                         break;
 830                 }
 831
 832                 memmove(p - 1, p, strlen(p) + 1);
 833                 str = p;
 834         } while (1);
 835
 836         return start;
 837 }
 838
 839 static int str_filename_cb(void *data, const char *input)
 840 {
 841         struct thread_data *td = data;
 842         char *fname, *str, *p;
 843
 844         p = str = strdup(input);
 845
 846         strip_blank_front(&str);
 847         strip_blank_end(str);
 848
 849         if (!td->files_index)
 850                 td->o.nr_files = 0;
 851
 852         while ((fname = get_next_file_name(&str)) != NULL) {
 853                 if (!strlen(fname))
 854                         break;
 855                 if (check_dir(td, fname)) {
 856                         free(p);
 857                         return 1;
 858                 }
 859                 add_file(td, fname);
 860                 td->o.nr_files++;
 861         }
 862
 863         free(p);
 864         return 0;
 865 }
 866
 867 static int str_directory_cb(void *data, const char fio_unused *str)
 868 {
 869         struct thread_data *td = data;
 870         struct stat sb;
 871
 872         if (lstat(td->o.directory, &sb) < 0) {
 873                 int ret = errno;
 874
 875                 log_err("fio: %s is not a directory\n", td->o.directory);
 876                 td_verror(td, ret, "lstat");
 877                 return 1;
 878         }
 879         if (!S_ISDIR(sb.st_mode)) {
 880                 log_err("fio: %s is not a directory\n", td->o.directory);
 881                 return 1;
 882         }
 883
 884         return 0;
 885 }
 886
 887 static int str_opendir_cb(void *data, const char fio_unused *str)
 888 {
 889         struct thread_data *td = data;
 890
 891         if (!td->files_index)
 892                 td->o.nr_files = 0;
 893
 894         return add_dir_files(td, td->o.opendir);
 895 }
 896
 897 static int str_verify_offset_cb(void *data, unsigned long long *off)
 898 {
 899         struct thread_data *td = data;
 900
 901         if (*off && *off < sizeof(struct verify_header)) {
 902                 log_err("fio: verify_offset too small\n");
 903                 return 1;
 904         }
 905
 906         td->o.verify_offset = *off;
 907         return 0;
 908 }
 909
 910 static int str_verify_pattern_cb(void *data, const char *input)
 911 {
 912         struct thread_data *td = data;
 913         long off;
 914         int i = 0, j = 0, len, k, base = 10;
 915         char* loc1, * loc2;
 916
 917         loc1 = strstr(input, "0x");
 918         loc2 = strstr(input, "0X");
 919         if (loc1 || loc2)
 920                 base = 16;
 921         off = strtol(input, NULL, base);
 922         if (off != LONG_MAX || errno != ERANGE) {
 923                 while (off) {
 924                         td->o.verify_pattern[i] = off & 0xff;
 925                         off >>= 8;
 926                         i++;
 927                 }
 928         } else {
 929                 len = strlen(input);
 930                 k = len - 1;
 931                 if (base == 16) {
 932                         if (loc1)
 933                                 j = loc1 - input + 2;
 934                         else
 935                                 j = loc2 - input + 2;
 936                 } else
 937                         return 1;
 938                 if (len - j < MAX_PATTERN_SIZE * 2) {
 939                         while (k >= j) {
 940                                 off = converthexchartoint(input[k--]);
 941                                 if (k >= j)
 942                                         off += (converthexchartoint(input[k--])
 943                                                 * 16);
 944                                 td->o.verify_pattern[i++] = (char) off;
 945                         }
 946                 }
 947         }
 948
 949         /*
 950          * Fill the pattern all the way to the end. This greatly reduces
 951          * the number of memcpy's we have to do when verifying the IO.
 952          */
 953         while (i > 1 && i * 2 <= MAX_PATTERN_SIZE) {
 954                 memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
 955                 i *= 2;
 956         }
 957         if (i == 1) {
 958                 /*
 959                  * The code in verify_io_u_pattern assumes a single byte pattern
 960                  * fills the whole verify pattern buffer.
 961                  */
 962                 memset(td->o.verify_pattern, td->o.verify_pattern[0],
 963                        MAX_PATTERN_SIZE);
 964         }
 965
 966         td->o.verify_pattern_bytes = i;
 967
 968         /*
 969          * VERIFY_META could already be set
 970          */
 971         if (td->o.verify == VERIFY_NONE)
 972                 td->o.verify = VERIFY_PATTERN;
 973
 974         return 0;
 975 }
 976
 977 static int str_lockfile_cb(void *data, const char *str)
 978 {
 979         struct thread_data *td = data;
 980         char *nr = get_opt_postfix(str);
 981
 982         td->o.lockfile_batch = 1;
 983         if (nr) {
 984                 td->o.lockfile_batch = atoi(nr);
 985                 free(nr);
 986         }
 987
 988         return 0;
 989 }
 990
 991 static int str_write_bw_log_cb(void *data, const char *str)
 992 {
 993         struct thread_data *td = data;
 994
 995         if (str)
 996                 td->o.bw_log_file = strdup(str);
 997
 998         td->o.write_bw_log = 1;
 999         return 0;
1000 }
1001
1002 static int str_write_lat_log_cb(void *data, const char *str)
1003 {
1004         struct thread_data *td = data;
1005
1006         if (str)
1007                 td->o.lat_log_file = strdup(str);
1008
1009         td->o.write_lat_log = 1;
1010         return 0;
1011 }
1012
1013 static int str_write_iops_log_cb(void *data, const char *str)
1014 {
1015         struct thread_data *td = data;
1016
1017         if (str)
1018                 td->o.iops_log_file = strdup(str);
1019
1020         td->o.write_iops_log = 1;
1021         return 0;
1022 }
1023
1024 static int str_gtod_reduce_cb(void *data, int *il)
1025 {
1026         struct thread_data *td = data;
1027         int val = *il;
1028
1029         td->o.disable_lat = !!val;
1030         td->o.disable_clat = !!val;
1031         td->o.disable_slat = !!val;
1032         td->o.disable_bw = !!val;
1033         td->o.clat_percentiles = !val;
1034         if (val)
1035                 td->tv_cache_mask = 63;
1036
1037         return 0;
1038 }
1039
1040 static int str_gtod_cpu_cb(void *data, long long *il)
1041 {
1042         struct thread_data *td = data;
1043         int val = *il;
1044
1045         td->o.gtod_cpu = val;
1046         td->o.gtod_offload = 1;
1047         return 0;
1048 }
1049
1050 static int str_size_cb(void *data, unsigned long long *__val)
1051 {
1052         struct thread_data *td = data;
1053         unsigned long long v = *__val;
1054
1055         if (parse_is_percent(v)) {
1056                 td->o.size = 0;
1057                 td->o.size_percent = -1ULL - v;
1058         } else
1059                 td->o.size = v;
1060
1061         return 0;
1062 }
1063
1064 static int rw_verify(struct fio_option *o, void *data)
1065 {
1066         struct thread_data *td = data;
1067
1068         if (read_only && td_write(td)) {
1069                 log_err("fio: job <%s> has write bit set, but fio is in"
1070                         " read-only mode\n", td->o.name);
1071                 return 1;
1072         }
1073
1074         return 0;
1075 }
1076
1077 static int gtod_cpu_verify(struct fio_option *o, void *data)
1078 {
1079 #ifndef FIO_HAVE_CPU_AFFINITY
1080         struct thread_data *td = data;
1081
1082         if (td->o.gtod_cpu) {
1083                 log_err("fio: platform must support CPU affinity for"
1084                         "gettimeofday() offloading\n");
1085                 return 1;
1086         }
1087 #endif
1088
1089         return 0;
1090 }
1091
1092 static int kb_base_verify(struct fio_option *o, void *data)
1093 {
1094         struct thread_data *td = data;
1095
1096         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
1097                 log_err("fio: kb_base set to nonsensical value: %u\n",
1098                                 td->o.kb_base);
1099                 return 1;
1100         }
1101
1102         return 0;
1103 }
1104
1105 /*
1106  * Map of job/command line options
1107  */
1108 static struct fio_option options[FIO_MAX_OPTS] = {
1109         {
1110                 .name   = "description",
1111                 .type   = FIO_OPT_STR_STORE,
1112                 .off1   = td_var_offset(description),
1113                 .help   = "Text job description",
1114         },
1115         {
1116                 .name   = "name",
1117                 .type   = FIO_OPT_STR_STORE,
1118                 .off1   = td_var_offset(name),
1119                 .help   = "Name of this job",
1120         },
1121         {
1122                 .name   = "directory",
1123                 .type   = FIO_OPT_STR_STORE,
1124                 .off1   = td_var_offset(directory),
1125                 .cb     = str_directory_cb,
1126                 .help   = "Directory to store files in",
1127         },
1128         {
1129                 .name   = "filename",
1130                 .type   = FIO_OPT_STR_STORE,
1131                 .off1   = td_var_offset(filename),
1132                 .cb     = str_filename_cb,
1133                 .prio   = -1, /* must come after "directory" */
1134                 .help   = "File(s) to use for the workload",
1135         },
1136         {
1137                 .name   = "kb_base",
1138                 .type   = FIO_OPT_INT,
1139                 .off1   = td_var_offset(kb_base),
1140                 .verify = kb_base_verify,
1141                 .prio   = 1,
1142                 .def    = "1024",
1143                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
1144         },
1145         {
1146                 .name   = "lockfile",
1147                 .type   = FIO_OPT_STR,
1148                 .cb     = str_lockfile_cb,
1149                 .off1   = td_var_offset(file_lock_mode),
1150                 .help   = "Lock file when doing IO to it",
1151                 .parent = "filename",
1152                 .def    = "none",
1153                 .posval = {
1154                           { .ival = "none",
1155                             .oval = FILE_LOCK_NONE,
1156                             .help = "No file locking",
1157                           },
1158                           { .ival = "exclusive",
1159                             .oval = FILE_LOCK_EXCLUSIVE,
1160                             .help = "Exclusive file lock",
1161                           },
1162                           {
1163                             .ival = "readwrite",
1164                             .oval = FILE_LOCK_READWRITE,
1165                             .help = "Read vs write lock",
1166                           },
1167                 },
1168         },
1169         {
1170                 .name   = "opendir",
1171                 .type   = FIO_OPT_STR_STORE,
1172                 .off1   = td_var_offset(opendir),
1173                 .cb     = str_opendir_cb,
1174                 .help   = "Recursively add files from this directory and down",
1175         },
1176         {
1177                 .name   = "rw",
1178                 .alias  = "readwrite",
1179                 .type   = FIO_OPT_STR,
1180                 .cb     = str_rw_cb,
1181                 .off1   = td_var_offset(td_ddir),
1182                 .help   = "IO direction",
1183                 .def    = "read",
1184                 .verify = rw_verify,
1185                 .posval = {
1186                           { .ival = "read",
1187                             .oval = TD_DDIR_READ,
1188                             .help = "Sequential read",
1189                           },
1190                           { .ival = "write",
1191                             .oval = TD_DDIR_WRITE,
1192                             .help = "Sequential write",
1193                           },
1194                           { .ival = "trim",
1195                             .oval = TD_DDIR_TRIM,
1196                             .help = "Sequential trim",
1197                           },
1198                           { .ival = "randread",
1199                             .oval = TD_DDIR_RANDREAD,
1200                             .help = "Random read",
1201                           },
1202                           { .ival = "randwrite",
1203                             .oval = TD_DDIR_RANDWRITE,
1204                             .help = "Random write",
1205                           },
1206                           { .ival = "randtrim",
1207                             .oval = TD_DDIR_RANDTRIM,
1208                             .help = "Random trim",
1209                           },
1210                           { .ival = "rw",
1211                             .oval = TD_DDIR_RW,
1212                             .help = "Sequential read and write mix",
1213                           },
1214                           { .ival = "readwrite",
1215                             .oval = TD_DDIR_RW,
1216                             .help = "Sequential read and write mix",
1217                           },
1218                           { .ival = "randrw",
1219                             .oval = TD_DDIR_RANDRW,
1220                             .help = "Random read and write mix"
1221                           },
1222                 },
1223         },
1224         {
1225                 .name   = "rw_sequencer",
1226                 .type   = FIO_OPT_STR,
1227                 .off1   = td_var_offset(rw_seq),
1228                 .help   = "IO offset generator modifier",
1229                 .def    = "sequential",
1230                 .posval = {
1231                           { .ival = "sequential",
1232                             .oval = RW_SEQ_SEQ,
1233                             .help = "Generate sequential offsets",
1234                           },
1235                           { .ival = "identical",
1236                             .oval = RW_SEQ_IDENT,
1237                             .help = "Generate identical offsets",
1238                           },
1239                 },
1240         },
1241
1242         {
1243                 .name   = "ioengine",
1244                 .type   = FIO_OPT_STR_STORE,
1245                 .off1   = td_var_offset(ioengine),
1246                 .help   = "IO engine to use",
1247                 .def    = FIO_PREFERRED_ENGINE,
1248                 .posval = {
1249                           { .ival = "sync",
1250                             .help = "Use read/write",
1251                           },
1252                           { .ival = "psync",
1253                             .help = "Use pread/pwrite",
1254                           },
1255                           { .ival = "vsync",
1256                             .help = "Use readv/writev",
1257                           },
1258 #ifdef FIO_HAVE_LIBAIO
1259                           { .ival = "libaio",
1260                             .help = "Linux native asynchronous IO",
1261                           },
1262 #endif
1263 #ifdef FIO_HAVE_POSIXAIO
1264                           { .ival = "posixaio",
1265                             .help = "POSIX asynchronous IO",
1266                           },
1267 #endif
1268 #ifdef FIO_HAVE_SOLARISAIO
1269                           { .ival = "solarisaio",
1270                             .help = "Solaris native asynchronous IO",
1271                           },
1272 #endif
1273 #ifdef FIO_HAVE_WINDOWSAIO
1274                           { .ival = "windowsaio",
1275                             .help = "Windows native asynchronous IO"
1276                           },
1277 #endif
1278                           { .ival = "mmap",
1279                             .help = "Memory mapped IO"
1280                           },
1281 #ifdef FIO_HAVE_SPLICE
1282                           { .ival = "splice",
1283                             .help = "splice/vmsplice based IO",
1284                           },
1285                           { .ival = "netsplice",
1286                             .help = "splice/vmsplice to/from the network",
1287                           },
1288 #endif
1289 #ifdef FIO_HAVE_SGIO
1290                           { .ival = "sg",
1291                             .help = "SCSI generic v3 IO",
1292                           },
1293 #endif
1294                           { .ival = "null",
1295                             .help = "Testing engine (no data transfer)",
1296                           },
1297                           { .ival = "net",
1298                             .help = "Network IO",
1299                           },
1300 #ifdef FIO_HAVE_SYSLET
1301                           { .ival = "syslet-rw",
1302                             .help = "syslet enabled async pread/pwrite IO",
1303                           },
1304 #endif
1305                           { .ival = "cpuio",
1306                             .help = "CPU cycle burner engine",
1307                           },
1308 #ifdef FIO_HAVE_GUASI
1309                           { .ival = "guasi",
1310                             .help = "GUASI IO engine",
1311                           },
1312 #endif
1313 #ifdef FIO_HAVE_BINJECT
1314                           { .ival = "binject",
1315                             .help = "binject direct inject block engine",
1316                           },
1317 #endif
1318 #ifdef FIO_HAVE_RDMA
1319                           { .ival = "rdma",
1320                             .help = "RDMA IO engine",
1321                           },
1322 #endif
1323 #ifdef FIO_HAVE_FUSION_AW
1324                           { .ival = "fusion-aw-sync",
1325                             .help = "Fusion-io atomic write engine",
1326                           },
1327 #endif
1328 #ifdef FIO_HAVE_E4_ENG
1329                           { .ival = "e4defrag",
1330                             .help = "ext4 defrag engine",
1331                           },
1332 #endif
1333 #ifdef FIO_HAVE_FALLOC_ENG
1334                           { .ival = "falloc",
1335                             .help = "fallocate() file based engine",
1336                           },
1337 #endif
1338                           { .ival = "external",
1339                             .help = "Load external engine (append name)",
1340                           },
1341                 },
1342         },
1343         {
1344                 .name   = "iodepth",
1345                 .type   = FIO_OPT_INT,
1346                 .off1   = td_var_offset(iodepth),
1347                 .help   = "Number of IO buffers to keep in flight",
1348                 .minval = 1,
1349                 .def    = "1",
1350         },
1351         {
1352                 .name   = "iodepth_batch",
1353                 .alias  = "iodepth_batch_submit",
1354                 .type   = FIO_OPT_INT,
1355                 .off1   = td_var_offset(iodepth_batch),
1356                 .help   = "Number of IO buffers to submit in one go",
1357                 .parent = "iodepth",
1358                 .minval = 1,
1359                 .def    = "1",
1360         },
1361         {
1362                 .name   = "iodepth_batch_complete",
1363                 .type   = FIO_OPT_INT,
1364                 .off1   = td_var_offset(iodepth_batch_complete),
1365                 .help   = "Number of IO buffers to retrieve in one go",
1366                 .parent = "iodepth",
1367                 .minval = 0,
1368                 .def    = "1",
1369         },
1370         {
1371                 .name   = "iodepth_low",
1372                 .type   = FIO_OPT_INT,
1373                 .off1   = td_var_offset(iodepth_low),
1374                 .help   = "Low water mark for queuing depth",
1375                 .parent = "iodepth",
1376         },
1377         {
1378                 .name   = "size",
1379                 .type   = FIO_OPT_STR_VAL,
1380                 .cb     = str_size_cb,
1381                 .help   = "Total size of device or files",
1382         },
1383         {
1384                 .name   = "fill_device",
1385                 .alias  = "fill_fs",
1386                 .type   = FIO_OPT_BOOL,
1387                 .off1   = td_var_offset(fill_device),
1388                 .help   = "Write until an ENOSPC error occurs",
1389                 .def    = "0",
1390         },
1391         {
1392                 .name   = "filesize",
1393                 .type   = FIO_OPT_STR_VAL,
1394                 .off1   = td_var_offset(file_size_low),
1395                 .off2   = td_var_offset(file_size_high),
1396                 .minval = 1,
1397                 .help   = "Size of individual files",
1398         },
1399         {
1400                 .name   = "offset",
1401                 .alias  = "fileoffset",
1402                 .type   = FIO_OPT_STR_VAL,
1403                 .off1   = td_var_offset(start_offset),
1404                 .help   = "Start IO from this offset",
1405                 .def    = "0",
1406         },
1407         {
1408                 .name   = "offset_increment",
1409                 .type   = FIO_OPT_STR_VAL,
1410                 .off1   = td_var_offset(offset_increment),
1411                 .help   = "What is the increment from one offset to the next",
1412                 .parent = "offset",
1413                 .def    = "0",
1414         },
1415         {
1416                 .name   = "bs",
1417                 .alias  = "blocksize",
1418                 .type   = FIO_OPT_INT,
1419                 .off1   = td_var_offset(bs[DDIR_READ]),
1420                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1421                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1422                 .minval = 1,
1423                 .help   = "Block size unit",
1424                 .def    = "4k",
1425                 .parent = "rw",
1426         },
1427         {
1428                 .name   = "ba",
1429                 .alias  = "blockalign",
1430                 .type   = FIO_OPT_INT,
1431                 .off1   = td_var_offset(ba[DDIR_READ]),
1432                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1433                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1434                 .minval = 1,
1435                 .help   = "IO block offset alignment",
1436                 .parent = "rw",
1437         },
1438         {
1439                 .name   = "bsrange",
1440                 .alias  = "blocksize_range",
1441                 .type   = FIO_OPT_RANGE,
1442                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1443                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1444                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1445                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1446                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1447                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1448                 .minval = 1,
1449                 .help   = "Set block size range (in more detail than bs)",
1450                 .parent = "rw",
1451         },
1452         {
1453                 .name   = "bssplit",
1454                 .type   = FIO_OPT_STR,
1455                 .cb     = str_bssplit_cb,
1456                 .help   = "Set a specific mix of block sizes",
1457                 .parent = "rw",
1458         },
1459         {
1460                 .name   = "bs_unaligned",
1461                 .alias  = "blocksize_unaligned",
1462                 .type   = FIO_OPT_STR_SET,
1463                 .off1   = td_var_offset(bs_unaligned),
1464                 .help   = "Don't sector align IO buffer sizes",
1465                 .parent = "rw",
1466         },
1467         {
1468                 .name   = "randrepeat",
1469                 .type   = FIO_OPT_BOOL,
1470                 .off1   = td_var_offset(rand_repeatable),
1471                 .help   = "Use repeatable random IO pattern",
1472                 .def    = "1",
1473                 .parent = "rw",
1474         },
1475         {
1476                 .name   = "use_os_rand",
1477                 .type   = FIO_OPT_BOOL,
1478                 .off1   = td_var_offset(use_os_rand),
1479                 .help   = "Set to use OS random generator",
1480                 .def    = "0",
1481                 .parent = "rw",
1482         },
1483         {
1484                 .name   = "norandommap",
1485                 .type   = FIO_OPT_STR_SET,
1486                 .off1   = td_var_offset(norandommap),
1487                 .help   = "Accept potential duplicate random blocks",
1488                 .parent = "rw",
1489         },
1490         {
1491                 .name   = "softrandommap",
1492                 .type   = FIO_OPT_BOOL,
1493                 .off1   = td_var_offset(softrandommap),
1494                 .help   = "Set norandommap if randommap allocation fails",
1495                 .parent = "norandommap",
1496                 .def    = "0",
1497         },
1498         {
1499                 .name   = "random_distribution",
1500                 .type   = FIO_OPT_STR,
1501                 .off1   = td_var_offset(random_distribution),
1502                 .cb     = str_random_distribution_cb,
1503                 .help   = "Random offset distribution generator",
1504                 .def    = "random",
1505                 .posval = {
1506                           { .ival = "random",
1507                             .oval = FIO_RAND_DIST_RANDOM,
1508                             .help = "Completely random",
1509                           },
1510                           { .ival = "zipf",
1511                             .oval = FIO_RAND_DIST_ZIPF,
1512                             .help = "Zipf distribution",
1513                           },
1514                 },
1515         },
1516         {
1517                 .name   = "nrfiles",
1518                 .alias  = "nr_files",
1519                 .type   = FIO_OPT_INT,
1520                 .off1   = td_var_offset(nr_files),
1521                 .help   = "Split job workload between this number of files",
1522                 .def    = "1",
1523         },
1524         {
1525                 .name   = "openfiles",
1526                 .type   = FIO_OPT_INT,
1527                 .off1   = td_var_offset(open_files),
1528                 .help   = "Number of files to keep open at the same time",
1529         },
1530         {
1531                 .name   = "file_service_type",
1532                 .type   = FIO_OPT_STR,
1533                 .cb     = str_fst_cb,
1534                 .off1   = td_var_offset(file_service_type),
1535                 .help   = "How to select which file to service next",
1536                 .def    = "roundrobin",
1537                 .posval = {
1538                           { .ival = "random",
1539                             .oval = FIO_FSERVICE_RANDOM,
1540                             .help = "Choose a file at random",
1541                           },
1542                           { .ival = "roundrobin",
1543                             .oval = FIO_FSERVICE_RR,
1544                             .help = "Round robin select files",
1545                           },
1546                           { .ival = "sequential",
1547                             .oval = FIO_FSERVICE_SEQ,
1548                             .help = "Finish one file before moving to the next",
1549                           },
1550                 },
1551                 .parent = "nrfiles",
1552         },
1553 #ifdef FIO_HAVE_FALLOCATE
1554         {
1555                 .name   = "fallocate",
1556                 .type   = FIO_OPT_STR,
1557                 .off1   = td_var_offset(fallocate_mode),
1558                 .help   = "Whether pre-allocation is performed when laying out files",
1559                 .def    = "posix",
1560                 .posval = {
1561                           { .ival = "none",
1562                             .oval = FIO_FALLOCATE_NONE,
1563                             .help = "Do not pre-allocate space",
1564                           },
1565                           { .ival = "posix",
1566                             .oval = FIO_FALLOCATE_POSIX,
1567                             .help = "Use posix_fallocate()",
1568                           },
1569 #ifdef FIO_HAVE_LINUX_FALLOCATE
1570                           { .ival = "keep",
1571                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1572                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1573                           },
1574 #endif
1575                           /* Compatibility with former boolean values */
1576                           { .ival = "0",
1577                             .oval = FIO_FALLOCATE_NONE,
1578                             .help = "Alias for 'none'",
1579                           },
1580                           { .ival = "1",
1581                             .oval = FIO_FALLOCATE_POSIX,
1582                             .help = "Alias for 'posix'",
1583                           },
1584                 },
1585         },
1586 #endif  /* FIO_HAVE_FALLOCATE */
1587         {
1588                 .name   = "fadvise_hint",
1589                 .type   = FIO_OPT_BOOL,
1590                 .off1   = td_var_offset(fadvise_hint),
1591                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1592                 .def    = "1",
1593         },
1594         {
1595                 .name   = "fsync",
1596                 .type   = FIO_OPT_INT,
1597                 .off1   = td_var_offset(fsync_blocks),
1598                 .help   = "Issue fsync for writes every given number of blocks",
1599                 .def    = "0",
1600         },
1601         {
1602                 .name   = "fdatasync",
1603                 .type   = FIO_OPT_INT,
1604                 .off1   = td_var_offset(fdatasync_blocks),
1605                 .help   = "Issue fdatasync for writes every given number of blocks",
1606                 .def    = "0",
1607         },
1608         {
1609                 .name   = "write_barrier",
1610                 .type   = FIO_OPT_INT,
1611                 .off1   = td_var_offset(barrier_blocks),
1612                 .help   = "Make every Nth write a barrier write",
1613                 .def    = "0",
1614         },
1615 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1616         {
1617                 .name   = "sync_file_range",
1618                 .posval = {
1619                           { .ival = "wait_before",
1620                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1621                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1622                             .or   = 1,
1623                           },
1624                           { .ival = "write",
1625                             .oval = SYNC_FILE_RANGE_WRITE,
1626                             .help = "SYNC_FILE_RANGE_WRITE",
1627                             .or   = 1,
1628                           },
1629                           {
1630                             .ival = "wait_after",
1631                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1632                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1633                             .or   = 1,
1634                           },
1635                 },
1636                 .type   = FIO_OPT_STR_MULTI,
1637                 .cb     = str_sfr_cb,
1638                 .off1   = td_var_offset(sync_file_range),
1639                 .help   = "Use sync_file_range()",
1640         },
1641 #endif
1642         {
1643                 .name   = "direct",
1644                 .type   = FIO_OPT_BOOL,
1645                 .off1   = td_var_offset(odirect),
1646                 .help   = "Use O_DIRECT IO (negates buffered)",
1647                 .def    = "0",
1648         },
1649         {
1650                 .name   = "buffered",
1651                 .type   = FIO_OPT_BOOL,
1652                 .off1   = td_var_offset(odirect),
1653                 .neg    = 1,
1654                 .help   = "Use buffered IO (negates direct)",
1655                 .def    = "1",
1656         },
1657         {
1658                 .name   = "overwrite",
1659                 .type   = FIO_OPT_BOOL,
1660                 .off1   = td_var_offset(overwrite),
1661                 .help   = "When writing, set whether to overwrite current data",
1662                 .def    = "0",
1663         },
1664         {
1665                 .name   = "loops",
1666                 .type   = FIO_OPT_INT,
1667                 .off1   = td_var_offset(loops),
1668                 .help   = "Number of times to run the job",
1669                 .def    = "1",
1670         },
1671         {
1672                 .name   = "numjobs",
1673                 .type   = FIO_OPT_INT,
1674                 .off1   = td_var_offset(numjobs),
1675                 .help   = "Duplicate this job this many times",
1676                 .def    = "1",
1677         },
1678         {
1679                 .name   = "startdelay",
1680                 .type   = FIO_OPT_STR_VAL_TIME,
1681                 .off1   = td_var_offset(start_delay),
1682                 .help   = "Only start job when this period has passed",
1683                 .def    = "0",
1684         },
1685         {
1686                 .name   = "runtime",
1687                 .alias  = "timeout",
1688                 .type   = FIO_OPT_STR_VAL_TIME,
1689                 .off1   = td_var_offset(timeout),
1690                 .help   = "Stop workload when this amount of time has passed",
1691                 .def    = "0",
1692         },
1693         {
1694                 .name   = "time_based",
1695                 .type   = FIO_OPT_STR_SET,
1696                 .off1   = td_var_offset(time_based),
1697                 .help   = "Keep running until runtime/timeout is met",
1698         },
1699         {
1700                 .name   = "ramp_time",
1701                 .type   = FIO_OPT_STR_VAL_TIME,
1702                 .off1   = td_var_offset(ramp_time),
1703                 .help   = "Ramp up time before measuring performance",
1704         },
1705         {
1706                 .name   = "clocksource",
1707                 .type   = FIO_OPT_STR,
1708                 .cb     = fio_clock_source_cb,
1709                 .off1   = td_var_offset(clocksource),
1710                 .help   = "What type of timing source to use",
1711                 .posval = {
1712                           { .ival = "gettimeofday",
1713                             .oval = CS_GTOD,
1714                             .help = "Use gettimeofday(2) for timing",
1715                           },
1716                           { .ival = "clock_gettime",
1717                             .oval = CS_CGETTIME,
1718                             .help = "Use clock_gettime(2) for timing",
1719                           },
1720 #ifdef ARCH_HAVE_CPU_CLOCK
1721                           { .ival = "cpu",
1722                             .oval = CS_CPUCLOCK,
1723                             .help = "Use CPU private clock",
1724                           },
1725 #endif
1726                 },
1727         },
1728         {
1729                 .name   = "mem",
1730                 .alias  = "iomem",
1731                 .type   = FIO_OPT_STR,
1732                 .cb     = str_mem_cb,
1733                 .off1   = td_var_offset(mem_type),
1734                 .help   = "Backing type for IO buffers",
1735                 .def    = "malloc",
1736                 .posval = {
1737                           { .ival = "malloc",
1738                             .oval = MEM_MALLOC,
1739                             .help = "Use malloc(3) for IO buffers",
1740                           },
1741                           { .ival = "shm",
1742                             .oval = MEM_SHM,
1743                             .help = "Use shared memory segments for IO buffers",
1744                           },
1745 #ifdef FIO_HAVE_HUGETLB
1746                           { .ival = "shmhuge",
1747                             .oval = MEM_SHMHUGE,
1748                             .help = "Like shm, but use huge pages",
1749                           },
1750 #endif
1751                           { .ival = "mmap",
1752                             .oval = MEM_MMAP,
1753                             .help = "Use mmap(2) (file or anon) for IO buffers",
1754                           },
1755 #ifdef FIO_HAVE_HUGETLB
1756                           { .ival = "mmaphuge",
1757                             .oval = MEM_MMAPHUGE,
1758                             .help = "Like mmap, but use huge pages",
1759                           },
1760 #endif
1761                   },
1762         },
1763         {
1764                 .name   = "iomem_align",
1765                 .alias  = "mem_align",
1766                 .type   = FIO_OPT_INT,
1767                 .off1   = td_var_offset(mem_align),
1768                 .minval = 0,
1769                 .help   = "IO memory buffer offset alignment",
1770                 .def    = "0",
1771                 .parent = "iomem",
1772         },
1773         {
1774                 .name   = "verify",
1775                 .type   = FIO_OPT_STR,
1776                 .off1   = td_var_offset(verify),
1777                 .help   = "Verify data written",
1778                 .cb     = str_verify_cb,
1779                 .def    = "0",
1780                 .posval = {
1781                           { .ival = "0",
1782                             .oval = VERIFY_NONE,
1783                             .help = "Don't do IO verification",
1784                           },
1785                           { .ival = "md5",
1786                             .oval = VERIFY_MD5,
1787                             .help = "Use md5 checksums for verification",
1788                           },
1789                           { .ival = "crc64",
1790                             .oval = VERIFY_CRC64,
1791                             .help = "Use crc64 checksums for verification",
1792                           },
1793                           { .ival = "crc32",
1794                             .oval = VERIFY_CRC32,
1795                             .help = "Use crc32 checksums for verification",
1796                           },
1797                           { .ival = "crc32c-intel",
1798                             .oval = VERIFY_CRC32C,
1799                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1800                           },
1801                           { .ival = "crc32c",
1802                             .oval = VERIFY_CRC32C,
1803                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1804                           },
1805                           { .ival = "crc16",
1806                             .oval = VERIFY_CRC16,
1807                             .help = "Use crc16 checksums for verification",
1808                           },
1809                           { .ival = "crc7",
1810                             .oval = VERIFY_CRC7,
1811                             .help = "Use crc7 checksums for verification",
1812                           },
1813                           { .ival = "sha1",
1814                             .oval = VERIFY_SHA1,
1815                             .help = "Use sha1 checksums for verification",
1816                           },
1817                           { .ival = "sha256",
1818                             .oval = VERIFY_SHA256,
1819                             .help = "Use sha256 checksums for verification",
1820                           },
1821                           { .ival = "sha512",
1822                             .oval = VERIFY_SHA512,
1823                             .help = "Use sha512 checksums for verification",
1824                           },
1825                           { .ival = "meta",
1826                             .oval = VERIFY_META,
1827                             .help = "Use io information",
1828                           },
1829                           {
1830                             .ival = "null",
1831                             .oval = VERIFY_NULL,
1832                             .help = "Pretend to verify",
1833                           },
1834                 },
1835         },
1836         {
1837                 .name   = "do_verify",
1838                 .type   = FIO_OPT_BOOL,
1839                 .off1   = td_var_offset(do_verify),
1840                 .help   = "Run verification stage after write",
1841                 .def    = "1",
1842                 .parent = "verify",
1843         },
1844         {
1845                 .name   = "verifysort",
1846                 .type   = FIO_OPT_BOOL,
1847                 .off1   = td_var_offset(verifysort),
1848                 .help   = "Sort written verify blocks for read back",
1849                 .def    = "1",
1850                 .parent = "verify",
1851         },
1852         {
1853                 .name   = "verify_interval",
1854                 .type   = FIO_OPT_INT,
1855                 .off1   = td_var_offset(verify_interval),
1856                 .minval = 2 * sizeof(struct verify_header),
1857                 .help   = "Store verify buffer header every N bytes",
1858                 .parent = "verify",
1859         },
1860         {
1861                 .name   = "verify_offset",
1862                 .type   = FIO_OPT_INT,
1863                 .help   = "Offset verify header location by N bytes",
1864                 .def    = "0",
1865                 .cb     = str_verify_offset_cb,
1866                 .parent = "verify",
1867         },
1868         {
1869                 .name   = "verify_pattern",
1870                 .type   = FIO_OPT_STR,
1871                 .cb     = str_verify_pattern_cb,
1872                 .help   = "Fill pattern for IO buffers",
1873                 .parent = "verify",
1874         },
1875         {
1876                 .name   = "verify_fatal",
1877                 .type   = FIO_OPT_BOOL,
1878                 .off1   = td_var_offset(verify_fatal),
1879                 .def    = "0",
1880                 .help   = "Exit on a single verify failure, don't continue",
1881                 .parent = "verify",
1882         },
1883         {
1884                 .name   = "verify_dump",
1885                 .type   = FIO_OPT_BOOL,
1886                 .off1   = td_var_offset(verify_dump),
1887                 .def    = "0",
1888                 .help   = "Dump contents of good and bad blocks on failure",
1889                 .parent = "verify",
1890         },
1891         {
1892                 .name   = "verify_async",
1893                 .type   = FIO_OPT_INT,
1894                 .off1   = td_var_offset(verify_async),
1895                 .def    = "0",
1896                 .help   = "Number of async verifier threads to use",
1897                 .parent = "verify",
1898         },
1899         {
1900                 .name   = "verify_backlog",
1901                 .type   = FIO_OPT_STR_VAL,
1902                 .off1   = td_var_offset(verify_backlog),
1903                 .help   = "Verify after this number of blocks are written",
1904                 .parent = "verify",
1905         },
1906         {
1907                 .name   = "verify_backlog_batch",
1908                 .type   = FIO_OPT_INT,
1909                 .off1   = td_var_offset(verify_batch),
1910                 .help   = "Verify this number of IO blocks",
1911                 .parent = "verify",
1912         },
1913 #ifdef FIO_HAVE_CPU_AFFINITY
1914         {
1915                 .name   = "verify_async_cpus",
1916                 .type   = FIO_OPT_STR,
1917                 .cb     = str_verify_cpus_allowed_cb,
1918                 .help   = "Set CPUs allowed for async verify threads",
1919                 .parent = "verify_async",
1920         },
1921 #endif
1922 #ifdef FIO_HAVE_TRIM
1923         {
1924                 .name   = "trim_percentage",
1925                 .type   = FIO_OPT_INT,
1926                 .cb     = str_verify_trim_cb,
1927                 .maxval = 100,
1928                 .help   = "Number of verify blocks to discard/trim",
1929                 .parent = "verify",
1930                 .def    = "0",
1931         },
1932         {
1933                 .name   = "trim_verify_zero",
1934                 .type   = FIO_OPT_INT,
1935                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1936                 .off1   = td_var_offset(trim_zero),
1937                 .parent = "trim_percentage",
1938                 .def    = "1",
1939         },
1940         {
1941                 .name   = "trim_backlog",
1942                 .type   = FIO_OPT_STR_VAL,
1943                 .off1   = td_var_offset(trim_backlog),
1944                 .help   = "Trim after this number of blocks are written",
1945                 .parent = "trim_percentage",
1946         },
1947         {
1948                 .name   = "trim_backlog_batch",
1949                 .type   = FIO_OPT_INT,
1950                 .off1   = td_var_offset(trim_batch),
1951                 .help   = "Trim this number of IO blocks",
1952                 .parent = "trim_percentage",
1953         },
1954 #endif
1955         {
1956                 .name   = "write_iolog",
1957                 .type   = FIO_OPT_STR_STORE,
1958                 .off1   = td_var_offset(write_iolog_file),
1959                 .help   = "Store IO pattern to file",
1960         },
1961         {
1962                 .name   = "read_iolog",
1963                 .type   = FIO_OPT_STR_STORE,
1964                 .off1   = td_var_offset(read_iolog_file),
1965                 .help   = "Playback IO pattern from file",
1966         },
1967         {
1968                 .name   = "replay_no_stall",
1969                 .type   = FIO_OPT_INT,
1970                 .off1   = td_var_offset(no_stall),
1971                 .def    = "0",
1972                 .parent = "read_iolog",
1973                 .help   = "Playback IO pattern file as fast as possible without stalls",
1974         },
1975         {
1976                 .name   = "replay_redirect",
1977                 .type   = FIO_OPT_STR_STORE,
1978                 .off1   = td_var_offset(replay_redirect),
1979                 .parent = "read_iolog",
1980                 .help   = "Replay all I/O onto this device, regardless of trace device",
1981         },
1982         {
1983                 .name   = "exec_prerun",
1984                 .type   = FIO_OPT_STR_STORE,
1985                 .off1   = td_var_offset(exec_prerun),
1986                 .help   = "Execute this file prior to running job",
1987         },
1988         {
1989                 .name   = "exec_postrun",
1990                 .type   = FIO_OPT_STR_STORE,
1991                 .off1   = td_var_offset(exec_postrun),
1992                 .help   = "Execute this file after running job",
1993         },
1994 #ifdef FIO_HAVE_IOSCHED_SWITCH
1995         {
1996                 .name   = "ioscheduler",
1997                 .type   = FIO_OPT_STR_STORE,
1998                 .off1   = td_var_offset(ioscheduler),
1999                 .help   = "Use this IO scheduler on the backing device",
2000         },
2001 #endif
2002         {
2003                 .name   = "zonesize",
2004                 .type   = FIO_OPT_STR_VAL,
2005                 .off1   = td_var_offset(zone_size),
2006                 .help   = "Amount of data to read per zone",
2007                 .def    = "0",
2008         },
2009         {
2010                 .name   = "zonerange",
2011                 .type   = FIO_OPT_STR_VAL,
2012                 .off1   = td_var_offset(zone_range),
2013                 .help   = "Give size of an IO zone",
2014                 .def    = "0",
2015         },
2016         {
2017                 .name   = "zoneskip",
2018                 .type   = FIO_OPT_STR_VAL,
2019                 .off1   = td_var_offset(zone_skip),
2020                 .help   = "Space between IO zones",
2021                 .def    = "0",
2022         },
2023         {
2024                 .name   = "lockmem",
2025                 .type   = FIO_OPT_STR_VAL,
2026                 .cb     = str_lockmem_cb,
2027                 .help   = "Lock down this amount of memory",
2028                 .def    = "0",
2029         },
2030         {
2031                 .name   = "rwmixread",
2032                 .type   = FIO_OPT_INT,
2033                 .cb     = str_rwmix_read_cb,
2034                 .maxval = 100,
2035                 .help   = "Percentage of mixed workload that is reads",
2036                 .def    = "50",
2037         },
2038         {
2039                 .name   = "rwmixwrite",
2040                 .type   = FIO_OPT_INT,
2041                 .cb     = str_rwmix_write_cb,
2042                 .maxval = 100,
2043                 .help   = "Percentage of mixed workload that is writes",
2044                 .def    = "50",
2045         },
2046         {
2047                 .name   = "rwmixcycle",
2048                 .type   = FIO_OPT_DEPRECATED,
2049         },
2050         {
2051                 .name   = "nice",
2052                 .type   = FIO_OPT_INT,
2053                 .off1   = td_var_offset(nice),
2054                 .help   = "Set job CPU nice value",
2055                 .minval = -19,
2056                 .maxval = 20,
2057                 .def    = "0",
2058         },
2059 #ifdef FIO_HAVE_IOPRIO
2060         {
2061                 .name   = "prio",
2062                 .type   = FIO_OPT_INT,
2063                 .cb     = str_prio_cb,
2064                 .help   = "Set job IO priority value",
2065                 .minval = 0,
2066                 .maxval = 7,
2067         },
2068         {
2069                 .name   = "prioclass",
2070                 .type   = FIO_OPT_INT,
2071                 .cb     = str_prioclass_cb,
2072                 .help   = "Set job IO priority class",
2073                 .minval = 0,
2074                 .maxval = 3,
2075         },
2076 #endif
2077         {
2078                 .name   = "thinktime",
2079                 .type   = FIO_OPT_INT,
2080                 .off1   = td_var_offset(thinktime),
2081                 .help   = "Idle time between IO buffers (usec)",
2082                 .def    = "0",
2083         },
2084         {
2085                 .name   = "thinktime_spin",
2086                 .type   = FIO_OPT_INT,
2087                 .off1   = td_var_offset(thinktime_spin),
2088                 .help   = "Start think time by spinning this amount (usec)",
2089                 .def    = "0",
2090                 .parent = "thinktime",
2091         },
2092         {
2093                 .name   = "thinktime_blocks",
2094                 .type   = FIO_OPT_INT,
2095                 .off1   = td_var_offset(thinktime_blocks),
2096                 .help   = "IO buffer period between 'thinktime'",
2097                 .def    = "1",
2098                 .parent = "thinktime",
2099         },
2100         {
2101                 .name   = "rate",
2102                 .type   = FIO_OPT_INT,
2103                 .off1   = td_var_offset(rate[DDIR_READ]),
2104                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2105                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2106                 .help   = "Set bandwidth rate",
2107         },
2108         {
2109                 .name   = "ratemin",
2110                 .type   = FIO_OPT_INT,
2111                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2112                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2113                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2114                 .help   = "Job must meet this rate or it will be shutdown",
2115                 .parent = "rate",
2116         },
2117         {
2118                 .name   = "rate_iops",
2119                 .type   = FIO_OPT_INT,
2120                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2121                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2122                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2123                 .help   = "Limit IO used to this number of IO operations/sec",
2124         },
2125         {
2126                 .name   = "rate_iops_min",
2127                 .type   = FIO_OPT_INT,
2128                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2129                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2130                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2131                 .help   = "Job must meet this rate or it will be shut down",
2132                 .parent = "rate_iops",
2133         },
2134         {
2135                 .name   = "ratecycle",
2136                 .type   = FIO_OPT_INT,
2137                 .off1   = td_var_offset(ratecycle),
2138                 .help   = "Window average for rate limits (msec)",
2139                 .def    = "1000",
2140                 .parent = "rate",
2141         },
2142         {
2143                 .name   = "max_latency",
2144                 .type   = FIO_OPT_INT,
2145                 .off1   = td_var_offset(max_latency),
2146                 .help   = "Maximum tolerated IO latency (usec)",
2147         },
2148         {
2149                 .name   = "invalidate",
2150                 .type   = FIO_OPT_BOOL,
2151                 .off1   = td_var_offset(invalidate_cache),
2152                 .help   = "Invalidate buffer/page cache prior to running job",
2153                 .def    = "1",
2154         },
2155         {
2156                 .name   = "sync",
2157                 .type   = FIO_OPT_BOOL,
2158                 .off1   = td_var_offset(sync_io),
2159                 .help   = "Use O_SYNC for buffered writes",
2160                 .def    = "0",
2161                 .parent = "buffered",
2162         },
2163         {
2164                 .name   = "bwavgtime",
2165                 .type   = FIO_OPT_INT,
2166                 .off1   = td_var_offset(bw_avg_time),
2167                 .help   = "Time window over which to calculate bandwidth"
2168                           " (msec)",
2169                 .def    = "500",
2170                 .parent = "write_bw_log",
2171         },
2172         {
2173                 .name   = "iopsavgtime",
2174                 .type   = FIO_OPT_INT,
2175                 .off1   = td_var_offset(iops_avg_time),
2176                 .help   = "Time window over which to calculate IOPS (msec)",
2177                 .def    = "500",
2178                 .parent = "write_iops_log",
2179         },
2180         {
2181                 .name   = "create_serialize",
2182                 .type   = FIO_OPT_BOOL,
2183                 .off1   = td_var_offset(create_serialize),
2184                 .help   = "Serialize creating of job files",
2185                 .def    = "1",
2186         },
2187         {
2188                 .name   = "create_fsync",
2189                 .type   = FIO_OPT_BOOL,
2190                 .off1   = td_var_offset(create_fsync),
2191                 .help   = "fsync file after creation",
2192                 .def    = "1",
2193         },
2194         {
2195                 .name   = "create_on_open",
2196                 .type   = FIO_OPT_BOOL,
2197                 .off1   = td_var_offset(create_on_open),
2198                 .help   = "Create files when they are opened for IO",
2199                 .def    = "0",
2200         },
2201         {
2202                 .name   = "create_only",
2203                 .type   = FIO_OPT_BOOL,
2204                 .off1   = td_var_offset(create_only),
2205                 .help   = "Only perform file creation phase",
2206                 .def    = "0",
2207         },
2208         {
2209                 .name   = "pre_read",
2210                 .type   = FIO_OPT_BOOL,
2211                 .off1   = td_var_offset(pre_read),
2212                 .help   = "Pre-read files before starting official testing",
2213                 .def    = "0",
2214         },
2215         {
2216                 .name   = "cpuload",
2217                 .type   = FIO_OPT_INT,
2218                 .off1   = td_var_offset(cpuload),
2219                 .help   = "Use this percentage of CPU",
2220         },
2221         {
2222                 .name   = "cpuchunks",
2223                 .type   = FIO_OPT_INT,
2224                 .off1   = td_var_offset(cpucycle),
2225                 .help   = "Length of the CPU burn cycles (usecs)",
2226                 .def    = "50000",
2227                 .parent = "cpuload",
2228         },
2229 #ifdef FIO_HAVE_CPU_AFFINITY
2230         {
2231                 .name   = "cpumask",
2232                 .type   = FIO_OPT_INT,
2233                 .cb     = str_cpumask_cb,
2234                 .help   = "CPU affinity mask",
2235         },
2236         {
2237                 .name   = "cpus_allowed",
2238                 .type   = FIO_OPT_STR,
2239                 .cb     = str_cpus_allowed_cb,
2240                 .help   = "Set CPUs allowed",
2241         },
2242 #endif
2243 #ifdef FIO_HAVE_LIBNUMA
2244         {
2245                 .name   = "numa_cpu_nodes",
2246                 .type   = FIO_OPT_STR,
2247                 .cb     = str_numa_cpunodes_cb,
2248                 .help   = "NUMA CPU nodes bind",
2249         },
2250         {
2251                 .name   = "numa_mem_policy",
2252                 .type   = FIO_OPT_STR,
2253                 .cb     = str_numa_mpol_cb,
2254                 .help   = "NUMA memory policy setup",
2255         },
2256 #endif
2257         {
2258                 .name   = "end_fsync",
2259                 .type   = FIO_OPT_BOOL,
2260                 .off1   = td_var_offset(end_fsync),
2261                 .help   = "Include fsync at the end of job",
2262                 .def    = "0",
2263         },
2264         {
2265                 .name   = "fsync_on_close",
2266                 .type   = FIO_OPT_BOOL,
2267                 .off1   = td_var_offset(fsync_on_close),
2268                 .help   = "fsync files on close",
2269                 .def    = "0",
2270         },
2271         {
2272                 .name   = "unlink",
2273                 .type   = FIO_OPT_BOOL,
2274                 .off1   = td_var_offset(unlink),
2275                 .help   = "Unlink created files after job has completed",
2276                 .def    = "0",
2277         },
2278         {
2279                 .name   = "exitall",
2280                 .type   = FIO_OPT_STR_SET,
2281                 .cb     = str_exitall_cb,
2282                 .help   = "Terminate all jobs when one exits",
2283         },
2284         {
2285                 .name   = "stonewall",
2286                 .alias  = "wait_for_previous",
2287                 .type   = FIO_OPT_STR_SET,
2288                 .off1   = td_var_offset(stonewall),
2289                 .help   = "Insert a hard barrier between this job and previous",
2290         },
2291         {
2292                 .name   = "new_group",
2293                 .type   = FIO_OPT_STR_SET,
2294                 .off1   = td_var_offset(new_group),
2295                 .help   = "Mark the start of a new group (for reporting)",
2296         },
2297         {
2298                 .name   = "thread",
2299                 .type   = FIO_OPT_STR_SET,
2300                 .off1   = td_var_offset(use_thread),
2301                 .help   = "Use threads instead of forks",
2302         },
2303         {
2304                 .name   = "write_bw_log",
2305                 .type   = FIO_OPT_STR,
2306                 .off1   = td_var_offset(write_bw_log),
2307                 .cb     = str_write_bw_log_cb,
2308                 .help   = "Write log of bandwidth during run",
2309         },
2310         {
2311                 .name   = "write_lat_log",
2312                 .type   = FIO_OPT_STR,
2313                 .off1   = td_var_offset(write_lat_log),
2314                 .cb     = str_write_lat_log_cb,
2315                 .help   = "Write log of latency during run",
2316         },
2317         {
2318                 .name   = "write_iops_log",
2319                 .type   = FIO_OPT_STR,
2320                 .off1   = td_var_offset(write_iops_log),
2321                 .cb     = str_write_iops_log_cb,
2322                 .help   = "Write log of IOPS during run",
2323         },
2324         {
2325                 .name   = "log_avg_msec",
2326                 .type   = FIO_OPT_INT,
2327                 .off1   = td_var_offset(log_avg_msec),
2328                 .help   = "Average bw/iops/lat logs over this period of time",
2329                 .def    = "0",
2330         },
2331         {
2332                 .name   = "hugepage-size",
2333                 .type   = FIO_OPT_INT,
2334                 .off1   = td_var_offset(hugepage_size),
2335                 .help   = "When using hugepages, specify size of each page",
2336                 .def    = __fio_stringify(FIO_HUGE_PAGE),
2337         },
2338         {
2339                 .name   = "group_reporting",
2340                 .type   = FIO_OPT_STR_SET,
2341                 .off1   = td_var_offset(group_reporting),
2342                 .help   = "Do reporting on a per-group basis",
2343         },
2344         {
2345                 .name   = "zero_buffers",
2346                 .type   = FIO_OPT_STR_SET,
2347                 .off1   = td_var_offset(zero_buffers),
2348                 .help   = "Init IO buffers to all zeroes",
2349         },
2350         {
2351                 .name   = "refill_buffers",
2352                 .type   = FIO_OPT_STR_SET,
2353                 .off1   = td_var_offset(refill_buffers),
2354                 .help   = "Refill IO buffers on every IO submit",
2355         },
2356         {
2357                 .name   = "scramble_buffers",
2358                 .type   = FIO_OPT_BOOL,
2359                 .off1   = td_var_offset(scramble_buffers),
2360                 .help   = "Slightly scramble buffers on every IO submit",
2361                 .def    = "1",
2362         },
2363         {
2364                 .name   = "buffer_compress_percentage",
2365                 .type   = FIO_OPT_INT,
2366                 .off1   = td_var_offset(compress_percentage),
2367                 .maxval = 100,
2368                 .minval = 1,
2369                 .help   = "How compressible the buffer is (approximately)",
2370         },
2371         {
2372                 .name   = "buffer_compress_chunk",
2373                 .type   = FIO_OPT_INT,
2374                 .off1   = td_var_offset(compress_chunk),
2375                 .parent = "buffer_compress_percentage",
2376                 .help   = "Size of compressible region in buffer",
2377         },
2378         {
2379                 .name   = "clat_percentiles",
2380                 .type   = FIO_OPT_BOOL,
2381                 .off1   = td_var_offset(clat_percentiles),
2382                 .help   = "Enable the reporting of completion latency percentiles",
2383                 .def    = "1",
2384         },
2385         {
2386                 .name   = "percentile_list",
2387                 .type   = FIO_OPT_FLOAT_LIST,
2388                 .off1   = td_var_offset(percentile_list),
2389                 .off2   = td_var_offset(overwrite_plist),
2390                 .help   = "Specify a custom list of percentiles to report",
2391                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2392                 .minfp  = 0.0,
2393                 .maxfp  = 100.0,
2394         },
2395
2396 #ifdef FIO_HAVE_DISK_UTIL
2397         {
2398                 .name   = "disk_util",
2399                 .type   = FIO_OPT_BOOL,
2400                 .off1   = td_var_offset(do_disk_util),
2401                 .help   = "Log disk utilization statistics",
2402                 .def    = "1",
2403         },
2404 #endif
2405         {
2406                 .name   = "gtod_reduce",
2407                 .type   = FIO_OPT_BOOL,
2408                 .help   = "Greatly reduce number of gettimeofday() calls",
2409                 .cb     = str_gtod_reduce_cb,
2410                 .def    = "0",
2411         },
2412         {
2413                 .name   = "disable_lat",
2414                 .type   = FIO_OPT_BOOL,
2415                 .off1   = td_var_offset(disable_lat),
2416                 .help   = "Disable latency numbers",
2417                 .parent = "gtod_reduce",
2418                 .def    = "0",
2419         },
2420         {
2421                 .name   = "disable_clat",
2422                 .type   = FIO_OPT_BOOL,
2423                 .off1   = td_var_offset(disable_clat),
2424                 .help   = "Disable completion latency numbers",
2425                 .parent = "gtod_reduce",
2426                 .def    = "0",
2427         },
2428         {
2429                 .name   = "disable_slat",
2430                 .type   = FIO_OPT_BOOL,
2431                 .off1   = td_var_offset(disable_slat),
2432                 .help   = "Disable submission latency numbers",
2433                 .parent = "gtod_reduce",
2434                 .def    = "0",
2435         },
2436         {
2437                 .name   = "disable_bw_measurement",
2438                 .type   = FIO_OPT_BOOL,
2439                 .off1   = td_var_offset(disable_bw),
2440                 .help   = "Disable bandwidth logging",
2441                 .parent = "gtod_reduce",
2442                 .def    = "0",
2443         },
2444         {
2445                 .name   = "gtod_cpu",
2446                 .type   = FIO_OPT_INT,
2447                 .cb     = str_gtod_cpu_cb,
2448                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2449                 .verify = gtod_cpu_verify,
2450         },
2451         {
2452                 .name   = "continue_on_error",
2453                 .type   = FIO_OPT_STR,
2454                 .off1   = td_var_offset(continue_on_error),
2455                 .help   = "Continue on non-fatal errors during IO",
2456                 .def    = "none",
2457                 .posval = {
2458                           { .ival = "none",
2459                             .oval = ERROR_TYPE_NONE,
2460                             .help = "Exit when an error is encountered",
2461                           },
2462                           { .ival = "read",
2463                             .oval = ERROR_TYPE_READ,
2464                             .help = "Continue on read errors only",
2465                           },
2466                           { .ival = "write",
2467                             .oval = ERROR_TYPE_WRITE,
2468                             .help = "Continue on write errors only",
2469                           },
2470                           { .ival = "io",
2471                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2472                             .help = "Continue on any IO errors",
2473                           },
2474                           { .ival = "verify",
2475                             .oval = ERROR_TYPE_VERIFY,
2476                             .help = "Continue on verify errors only",
2477                           },
2478                           { .ival = "all",
2479                             .oval = ERROR_TYPE_ANY,
2480                             .help = "Continue on all io and verify errors",
2481                           },
2482                           { .ival = "0",
2483                             .oval = ERROR_TYPE_NONE,
2484                             .help = "Alias for 'none'",
2485                           },
2486                           { .ival = "1",
2487                             .oval = ERROR_TYPE_ANY,
2488                             .help = "Alias for 'all'",
2489                           },
2490                 },
2491         },
2492         {
2493                 .name   = "ignore_error",
2494                 .type   = FIO_OPT_STR,
2495                 .cb     = str_ignore_error_cb,
2496                 .help   = "Set a specific list of errors to ignore",
2497                 .parent = "rw",
2498         },
2499         {
2500                 .name   = "error_dump",
2501                 .type   = FIO_OPT_BOOL,
2502                 .off1   = td_var_offset(error_dump),
2503                 .def    = "0",
2504                 .help   = "Dump info on each error",
2505         },
2506
2507         {
2508                 .name   = "profile",
2509                 .type   = FIO_OPT_STR_STORE,
2510                 .off1   = td_var_offset(profile),
2511                 .help   = "Select a specific builtin performance test",
2512         },
2513         {
2514                 .name   = "cgroup",
2515                 .type   = FIO_OPT_STR_STORE,
2516                 .off1   = td_var_offset(cgroup),
2517                 .help   = "Add job to cgroup of this name",
2518         },
2519         {
2520                 .name   = "cgroup_weight",
2521                 .type   = FIO_OPT_INT,
2522                 .off1   = td_var_offset(cgroup_weight),
2523                 .help   = "Use given weight for cgroup",
2524                 .minval = 100,
2525                 .maxval = 1000,
2526         },
2527         {
2528                 .name   = "cgroup_nodelete",
2529                 .type   = FIO_OPT_BOOL,
2530                 .off1   = td_var_offset(cgroup_nodelete),
2531                 .help   = "Do not delete cgroups after job completion",
2532                 .def    = "0",
2533         },
2534         {
2535                 .name   = "uid",
2536                 .type   = FIO_OPT_INT,
2537                 .off1   = td_var_offset(uid),
2538                 .help   = "Run job with this user ID",
2539         },
2540         {
2541                 .name   = "gid",
2542                 .type   = FIO_OPT_INT,
2543                 .off1   = td_var_offset(gid),
2544                 .help   = "Run job with this group ID",
2545         },
2546         {
2547                 .name   = "flow_id",
2548                 .type   = FIO_OPT_INT,
2549                 .off1   = td_var_offset(flow_id),
2550                 .help   = "The flow index ID to use",
2551                 .def    = "0",
2552         },
2553         {
2554                 .name   = "flow",
2555                 .type   = FIO_OPT_INT,
2556                 .off1   = td_var_offset(flow),
2557                 .help   = "Weight for flow control of this job",
2558                 .parent = "flow_id",
2559                 .def    = "0",
2560         },
2561         {
2562                 .name   = "flow_watermark",
2563                 .type   = FIO_OPT_INT,
2564                 .off1   = td_var_offset(flow_watermark),
2565                 .help   = "High watermark for flow control. This option"
2566                         " should be set to the same value for all threads"
2567                         " with non-zero flow.",
2568                 .parent = "flow_id",
2569                 .def    = "1024",
2570         },
2571         {
2572                 .name   = "flow_sleep",
2573                 .type   = FIO_OPT_INT,
2574                 .off1   = td_var_offset(flow_sleep),
2575                 .help   = "How many microseconds to sleep after being held"
2576                         " back by the flow control mechanism",
2577                 .parent = "flow_id",
2578                 .def    = "0",
2579         },
2580         {
2581                 .name = NULL,
2582         },
2583 };
2584
2585 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2586                         const char *name, int val)
2587 {
2588         lopt->name = (char *) name;
2589         lopt->val = val;
2590         if (o->type == FIO_OPT_STR_SET)
2591                 lopt->has_arg = no_argument;
2592         else
2593                 lopt->has_arg = required_argument;
2594 }
2595
2596 static void options_to_lopts(struct fio_option *opts,
2597                               struct option *long_options,
2598                               int i, int option_type)
2599 {
2600         struct fio_option *o = &opts[0];
2601         while (o->name) {
2602                 add_to_lopt(&long_options[i], o, o->name, option_type);
2603                 if (o->alias) {
2604                         i++;
2605                         add_to_lopt(&long_options[i], o, o->alias, option_type);
2606                 }
2607
2608                 i++;
2609                 o++;
2610                 assert(i < FIO_NR_OPTIONS);
2611         }
2612 }
2613
2614 void fio_options_set_ioengine_opts(struct option *long_options,
2615                                    struct thread_data *td)
2616 {
2617         unsigned int i;
2618
2619         i = 0;
2620         while (long_options[i].name) {
2621                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2622                         memset(&long_options[i], 0, sizeof(*long_options));
2623                         break;
2624                 }
2625                 i++;
2626         }
2627
2628         /*
2629          * Just clear out the prior ioengine options.
2630          */
2631         if (!td || !td->eo)
2632                 return;
2633
2634         options_to_lopts(td->io_ops->options, long_options, i,
2635                          FIO_GETOPT_IOENGINE);
2636 }
2637
2638 void fio_options_dup_and_init(struct option *long_options)
2639 {
2640         unsigned int i;
2641
2642         options_init(options);
2643
2644         i = 0;
2645         while (long_options[i].name)
2646                 i++;
2647
2648         options_to_lopts(options, long_options, i, FIO_GETOPT_JOB);
2649 }
2650
2651 struct fio_keyword {
2652         const char *word;
2653         const char *desc;
2654         char *replace;
2655 };
2656
2657 static struct fio_keyword fio_keywords[] = {
2658         {
2659                 .word   = "$pagesize",
2660                 .desc   = "Page size in the system",
2661         },
2662         {
2663                 .word   = "$mb_memory",
2664                 .desc   = "Megabytes of memory online",
2665         },
2666         {
2667                 .word   = "$ncpus",
2668                 .desc   = "Number of CPUs online in the system",
2669         },
2670         {
2671                 .word   = NULL,
2672         },
2673 };
2674
2675 void fio_keywords_init(void)
2676 {
2677         unsigned long long mb_memory;
2678         char buf[128];
2679         long l;
2680
2681         sprintf(buf, "%lu", (unsigned long) page_size);
2682         fio_keywords[0].replace = strdup(buf);
2683
2684         mb_memory = os_phys_mem() / (1024 * 1024);
2685         sprintf(buf, "%llu", mb_memory);
2686         fio_keywords[1].replace = strdup(buf);
2687
2688         l = cpus_online();
2689         sprintf(buf, "%lu", l);
2690         fio_keywords[2].replace = strdup(buf);
2691 }
2692
2693 #define BC_APP          "bc"
2694
2695 static char *bc_calc(char *str)
2696 {
2697         char buf[128], *tmp;
2698         FILE *f;
2699         int ret;
2700
2701         /*
2702          * No math, just return string
2703          */
2704         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2705              !strchr(str, '/')) || strchr(str, '\''))
2706                 return str;
2707
2708         /*
2709          * Split option from value, we only need to calculate the value
2710          */
2711         tmp = strchr(str, '=');
2712         if (!tmp)
2713                 return str;
2714
2715         tmp++;
2716
2717         /*
2718          * Prevent buffer overflows; such a case isn't reasonable anyway
2719          */
2720         if (strlen(str) >= 128 || strlen(tmp) > 100)
2721                 return str;
2722
2723         sprintf(buf, "which %s > /dev/null", BC_APP);
2724         if (system(buf)) {
2725                 log_err("fio: bc is needed for performing math\n");
2726                 return NULL;
2727         }
2728
2729         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2730         f = popen(buf, "r");
2731         if (!f) {
2732                 return NULL;
2733         }
2734
2735         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2736         if (ret <= 0) {
2737                 return NULL;
2738         }
2739
2740         pclose(f);
2741         buf[(tmp - str) + ret - 1] = '\0';
2742         memcpy(buf, str, tmp - str);
2743         free(str);
2744         return strdup(buf);
2745 }
2746
2747 /*
2748  * Return a copy of the input string with substrings of the form ${VARNAME}
2749  * substituted with the value of the environment variable VARNAME.  The
2750  * substitution always occurs, even if VARNAME is empty or the corresponding
2751  * environment variable undefined.
2752  */
2753 static char *option_dup_subs(const char *opt)
2754 {
2755         char out[OPT_LEN_MAX+1];
2756         char in[OPT_LEN_MAX+1];
2757         char *outptr = out;
2758         char *inptr = in;
2759         char *ch1, *ch2, *env;
2760         ssize_t nchr = OPT_LEN_MAX;
2761         size_t envlen;
2762
2763         if (strlen(opt) + 1 > OPT_LEN_MAX) {
2764                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2765                 return NULL;
2766         }
2767
2768         in[OPT_LEN_MAX] = '\0';
2769         strncpy(in, opt, OPT_LEN_MAX);
2770
2771         while (*inptr && nchr > 0) {
2772                 if (inptr[0] == '$' && inptr[1] == '{') {
2773                         ch2 = strchr(inptr, '}');
2774                         if (ch2 && inptr+1 < ch2) {
2775                                 ch1 = inptr+2;
2776                                 inptr = ch2+1;
2777                                 *ch2 = '\0';
2778
2779                                 env = getenv(ch1);
2780                                 if (env) {
2781                                         envlen = strlen(env);
2782                                         if (envlen <= nchr) {
2783                                                 memcpy(outptr, env, envlen);
2784                                                 outptr += envlen;
2785                                                 nchr -= envlen;
2786                                         }
2787                                 }
2788
2789                                 continue;
2790                         }
2791                 }
2792
2793                 *outptr++ = *inptr++;
2794                 --nchr;
2795         }
2796
2797         *outptr = '\0';
2798         return strdup(out);
2799 }
2800
2801 /*
2802  * Look for reserved variable names and replace them with real values
2803  */
2804 static char *fio_keyword_replace(char *opt)
2805 {
2806         char *s;
2807         int i;
2808         int docalc = 0;
2809
2810         for (i = 0; fio_keywords[i].word != NULL; i++) {
2811                 struct fio_keyword *kw = &fio_keywords[i];
2812
2813                 while ((s = strstr(opt, kw->word)) != NULL) {
2814                         char *new = malloc(strlen(opt) + 1);
2815                         char *o_org = opt;
2816                         int olen = s - opt;
2817                         int len;
2818
2819                         /*
2820                          * Copy part of the string before the keyword and
2821                          * sprintf() the replacement after it.
2822                          */
2823                         memcpy(new, opt, olen);
2824                         len = sprintf(new + olen, "%s", kw->replace);
2825
2826                         /*
2827                          * If there's more in the original string, copy that
2828                          * in too
2829                          */
2830                         opt += strlen(kw->word) + olen;
2831                         if (strlen(opt))
2832                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2833
2834                         /*
2835                          * replace opt and free the old opt
2836                          */
2837                         opt = new;
2838                         free(o_org);
2839
2840                         docalc = 1;
2841                 }
2842         }
2843
2844         /*
2845          * Check for potential math and invoke bc, if possible
2846          */
2847         if (docalc)
2848                 opt = bc_calc(opt);
2849
2850         return opt;
2851 }
2852
2853 static char **dup_and_sub_options(char **opts, int num_opts)
2854 {
2855         int i;
2856         char **opts_copy = malloc(num_opts * sizeof(*opts));
2857         for (i = 0; i < num_opts; i++) {
2858                 opts_copy[i] = option_dup_subs(opts[i]);
2859                 if (!opts_copy[i])
2860                         continue;
2861                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2862         }
2863         return opts_copy;
2864 }
2865
2866 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2867 {
2868         int i, ret, unknown;
2869         char **opts_copy;
2870
2871         sort_options(opts, options, num_opts);
2872         opts_copy = dup_and_sub_options(opts, num_opts);
2873
2874         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2875                 struct fio_option *o;
2876                 int newret = parse_option(opts_copy[i], opts[i], options, &o,
2877                                           td);
2878
2879                 if (opts_copy[i]) {
2880                         if (newret && !o) {
2881                                 unknown++;
2882                                 continue;
2883                         }
2884                         free(opts_copy[i]);
2885                         opts_copy[i] = NULL;
2886                 }
2887
2888                 ret |= newret;
2889         }
2890
2891         if (unknown) {
2892                 ret |= ioengine_load(td);
2893                 if (td->eo) {
2894                         sort_options(opts_copy, td->io_ops->options, num_opts);
2895                         opts = opts_copy;
2896                 }
2897                 for (i = 0; i < num_opts; i++) {
2898                         struct fio_option *o = NULL;
2899                         int newret = 1;
2900                         if (!opts_copy[i])
2901                                 continue;
2902
2903                         if (td->eo)
2904                                 newret = parse_option(opts_copy[i], opts[i],
2905                                                       td->io_ops->options, &o,
2906                                                       td->eo);
2907
2908                         ret |= newret;
2909                         if (!o)
2910                                 log_err("Bad option <%s>\n", opts[i]);
2911
2912                         free(opts_copy[i]);
2913                         opts_copy[i] = NULL;
2914                 }
2915         }
2916
2917         free(opts_copy);
2918         return ret;
2919 }
2920
2921 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2922 {
2923         return parse_cmd_option(opt, val, options, td);
2924 }
2925
2926 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
2927                                 char *val)
2928 {
2929         return parse_cmd_option(opt, val, td->io_ops->options, td);
2930 }
2931
2932 void fio_fill_default_options(struct thread_data *td)
2933 {
2934         fill_default_options(td, options);
2935 }
2936
2937 int fio_show_option_help(const char *opt)
2938 {
2939         return show_cmd_help(options, opt);
2940 }
2941
2942 void options_mem_dupe(void *data, struct fio_option *options)
2943 {
2944         struct fio_option *o;
2945         char **ptr;
2946
2947         for (o = &options[0]; o->name; o++) {
2948                 if (o->type != FIO_OPT_STR_STORE)
2949                         continue;
2950
2951                 ptr = td_var(data, o->off1);
2952                 if (*ptr)
2953                         *ptr = strdup(*ptr);
2954         }
2955 }
2956
2957 /*
2958  * dupe FIO_OPT_STR_STORE options
2959  */
2960 void fio_options_mem_dupe(struct thread_data *td)
2961 {
2962         options_mem_dupe(&td->o, options);
2963
2964         if (td->eo && td->io_ops) {
2965                 void *oldeo = td->eo;
2966
2967                 td->eo = malloc(td->io_ops->option_struct_size);
2968                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
2969                 options_mem_dupe(td->eo, td->io_ops->options);
2970         }
2971 }
2972
2973 unsigned int fio_get_kb_base(void *data)
2974 {
2975         struct thread_data *td = data;
2976         unsigned int kb_base = 0;
2977
2978         if (td)
2979                 kb_base = td->o.kb_base;
2980         if (!kb_base)
2981                 kb_base = 1024;
2982
2983         return kb_base;
2984 }
2985
2986 int add_option(struct fio_option *o)
2987 {
2988         struct fio_option *__o;
2989         int opt_index = 0;
2990
2991         __o = options;
2992         while (__o->name) {
2993                 opt_index++;
2994                 __o++;
2995         }
2996
2997         memcpy(&options[opt_index], o, sizeof(*o));
2998         return 0;
2999 }
3000
3001 void invalidate_profile_options(const char *prof_name)
3002 {
3003         struct fio_option *o;
3004
3005         o = options;
3006         while (o->name) {
3007                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
3008                         o->type = FIO_OPT_INVALID;
3009                         o->prof_name = NULL;
3010                 }
3011                 o++;
3012         }
3013 }
3014
3015 void add_opt_posval(const char *optname, const char *ival, const char *help)
3016 {
3017         struct fio_option *o;
3018         unsigned int i;
3019
3020         o = find_option(options, optname);
3021         if (!o)
3022                 return;
3023
3024         for (i = 0; i < PARSE_MAX_VP; i++) {
3025                 if (o->posval[i].ival)
3026                         continue;
3027
3028                 o->posval[i].ival = ival;
3029                 o->posval[i].help = help;
3030                 break;
3031         }
3032 }
3033
3034 void del_opt_posval(const char *optname, const char *ival)
3035 {
3036         struct fio_option *o;
3037         unsigned int i;
3038
3039         o = find_option(options, optname);
3040         if (!o)
3041                 return;
3042
3043         for (i = 0; i < PARSE_MAX_VP; i++) {
3044                 if (!o->posval[i].ival)
3045                         continue;
3046                 if (strcmp(o->posval[i].ival, ival))
3047                         continue;
3048
3049                 o->posval[i].ival = NULL;
3050                 o->posval[i].help = NULL;
3051         }
3052 }
3053
3054 void fio_options_free(struct thread_data *td)
3055 {
3056         options_free(options, td);
3057         if (td->eo && td->io_ops && td->io_ops->options) {
3058                 options_free(td->io_ops->options, td->eo);
3059                 free(td->eo);
3060                 td->eo = NULL;
3061         }
3062 }