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
 348         return 0;
 349 }
 350
 351 static int str_verify_cb(void *data, const char *mem)
 352 {
 353         struct thread_data *td = data;
 354
 355         if (td->o.verify == VERIFY_CRC32C_INTEL ||
 356             td->o.verify == VERIFY_CRC32C) {
 357                 crc32c_intel_probe();
 358         }
 359
 360         return 0;
 361 }
 362
 363 static int fio_clock_source_cb(void *data, const char *str)
 364 {
 365         struct thread_data *td = data;
 366
 367         fio_clock_source = td->o.clocksource;
 368         fio_clock_source_set = 1;
 369         fio_clock_init();
 370         return 0;
 371 }
 372
 373 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 374 {
 375         mlock_size = *val;
 376         return 0;
 377 }
 378
 379 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 380 {
 381         struct thread_data *td = data;
 382
 383         td->o.rwmix[DDIR_READ] = *val;
 384         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 385         return 0;
 386 }
 387
 388 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 389 {
 390         struct thread_data *td = data;
 391
 392         td->o.rwmix[DDIR_WRITE] = *val;
 393         td->o.rwmix[DDIR_READ] = 100 - *val;
 394         return 0;
 395 }
 396
 397 #ifdef FIO_HAVE_IOPRIO
 398 static int str_prioclass_cb(void *data, unsigned long long *val)
 399 {
 400         struct thread_data *td = data;
 401         unsigned short mask;
 402
 403         /*
 404          * mask off old class bits, str_prio_cb() may have set a default class
 405          */
 406         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 407         td->ioprio &= mask;
 408
 409         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 410         td->ioprio_set = 1;
 411         return 0;
 412 }
 413
 414 static int str_prio_cb(void *data, unsigned long long *val)
 415 {
 416         struct thread_data *td = data;
 417
 418         td->ioprio |= *val;
 419
 420         /*
 421          * If no class is set, assume BE
 422          */
 423         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 424                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 425
 426         td->ioprio_set = 1;
 427         return 0;
 428 }
 429 #endif
 430
 431 static int str_exitall_cb(void)
 432 {
 433         exitall_on_terminate = 1;
 434         return 0;
 435 }
 436
 437 #ifdef FIO_HAVE_CPU_AFFINITY
 438 static int str_cpumask_cb(void *data, unsigned long long *val)
 439 {
 440         struct thread_data *td = data;
 441         unsigned int i;
 442         long max_cpu;
 443         int ret;
 444
 445         ret = fio_cpuset_init(&td->o.cpumask);
 446         if (ret < 0) {
 447                 log_err("fio: cpuset_init failed\n");
 448                 td_verror(td, ret, "fio_cpuset_init");
 449                 return 1;
 450         }
 451
 452         max_cpu = cpus_online();
 453
 454         for (i = 0; i < sizeof(int) * 8; i++) {
 455                 if ((1 << i) & *val) {
 456                         if (i > max_cpu) {
 457                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 458                                                                 max_cpu);
 459                                 return 1;
 460                         }
 461                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 462                         fio_cpu_set(&td->o.cpumask, i);
 463                 }
 464         }
 465
 466         td->o.cpumask_set = 1;
 467         return 0;
 468 }
 469
 470 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 471                             const char *input)
 472 {
 473         char *cpu, *str, *p;
 474         long max_cpu;
 475         int ret = 0;
 476
 477         ret = fio_cpuset_init(mask);
 478         if (ret < 0) {
 479                 log_err("fio: cpuset_init failed\n");
 480                 td_verror(td, ret, "fio_cpuset_init");
 481                 return 1;
 482         }
 483
 484         p = str = strdup(input);
 485
 486         strip_blank_front(&str);
 487         strip_blank_end(str);
 488
 489         max_cpu = cpus_online();
 490
 491         while ((cpu = strsep(&str, ",")) != NULL) {
 492                 char *str2, *cpu2;
 493                 int icpu, icpu2;
 494
 495                 if (!strlen(cpu))
 496                         break;
 497
 498                 str2 = cpu;
 499                 icpu2 = -1;
 500                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 501                         if (!strlen(cpu2))
 502                                 break;
 503
 504                         icpu2 = atoi(cpu2);
 505                 }
 506
 507                 icpu = atoi(cpu);
 508                 if (icpu2 == -1)
 509                         icpu2 = icpu;
 510                 while (icpu <= icpu2) {
 511                         if (icpu >= FIO_MAX_CPUS) {
 512                                 log_err("fio: your OS only supports up to"
 513                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 514                                 ret = 1;
 515                                 break;
 516                         }
 517                         if (icpu > max_cpu) {
 518                                 log_err("fio: CPU %d too large (max=%ld)\n",
 519                                                         icpu, max_cpu);
 520                                 ret = 1;
 521                                 break;
 522                         }
 523
 524                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 525                         fio_cpu_set(mask, icpu);
 526                         icpu++;
 527                 }
 528                 if (ret)
 529                         break;
 530         }
 531
 532         free(p);
 533         if (!ret)
 534                 td->o.cpumask_set = 1;
 535         return ret;
 536 }
 537
 538 static int str_cpus_allowed_cb(void *data, const char *input)
 539 {
 540         struct thread_data *td = data;
 541         int ret;
 542
 543         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 544         if (!ret)
 545                 td->o.cpumask_set = 1;
 546
 547         return ret;
 548 }
 549
 550 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 551 {
 552         struct thread_data *td = data;
 553         int ret;
 554
 555         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 556         if (!ret)
 557                 td->o.verify_cpumask_set = 1;
 558
 559         return ret;
 560 }
 561 #endif
 562
 563 #ifdef CONFIG_LIBNUMA
 564 static int str_numa_cpunodes_cb(void *data, char *input)
 565 {
 566         struct thread_data *td = data;
 567
 568         /* numa_parse_nodestring() parses a character string list
 569          * of nodes into a bit mask. The bit mask is allocated by
 570          * numa_allocate_nodemask(), so it should be freed by
 571          * numa_free_nodemask().
 572          */
 573         td->o.numa_cpunodesmask = numa_parse_nodestring(input);
 574         if (td->o.numa_cpunodesmask == NULL) {
 575                 log_err("fio: numa_parse_nodestring failed\n");
 576                 td_verror(td, 1, "str_numa_cpunodes_cb");
 577                 return 1;
 578         }
 579
 580         td->o.numa_cpumask_set = 1;
 581         return 0;
 582 }
 583
 584 static int str_numa_mpol_cb(void *data, char *input)
 585 {
 586         struct thread_data *td = data;
 587         const char * const policy_types[] =
 588                 { "default", "prefer", "bind", "interleave", "local" };
 589         int i;
 590
 591         char *nodelist = strchr(input, ':');
 592         if (nodelist) {
 593                 /* NUL-terminate mode */
 594                 *nodelist++ = '\0';
 595         }
 596
 597         for (i = 0; i <= MPOL_LOCAL; i++) {
 598                 if (!strcmp(input, policy_types[i])) {
 599                         td->o.numa_mem_mode = i;
 600                         break;
 601                 }
 602         }
 603         if (i > MPOL_LOCAL) {
 604                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 605                 goto out;
 606         }
 607
 608         switch (td->o.numa_mem_mode) {
 609         case MPOL_PREFERRED:
 610                 /*
 611                  * Insist on a nodelist of one node only
 612                  */
 613                 if (nodelist) {
 614                         char *rest = nodelist;
 615                         while (isdigit(*rest))
 616                                 rest++;
 617                         if (*rest) {
 618                                 log_err("fio: one node only for \'prefer\'\n");
 619                                 goto out;
 620                         }
 621                 } else {
 622                         log_err("fio: one node is needed for \'prefer\'\n");
 623                         goto out;
 624                 }
 625                 break;
 626         case MPOL_INTERLEAVE:
 627                 /*
 628                  * Default to online nodes with memory if no nodelist
 629                  */
 630                 if (!nodelist)
 631                         nodelist = strdup("all");
 632                 break;
 633         case MPOL_LOCAL:
 634         case MPOL_DEFAULT:
 635                 /*
 636                  * Don't allow a nodelist
 637                  */
 638                 if (nodelist) {
 639                         log_err("fio: NO nodelist for \'local\'\n");
 640                         goto out;
 641                 }
 642                 break;
 643         case MPOL_BIND:
 644                 /*
 645                  * Insist on a nodelist
 646                  */
 647                 if (!nodelist) {
 648                         log_err("fio: a nodelist is needed for \'bind\'\n");
 649                         goto out;
 650                 }
 651                 break;
 652         }
 653
 654
 655         /* numa_parse_nodestring() parses a character string list
 656          * of nodes into a bit mask. The bit mask is allocated by
 657          * numa_allocate_nodemask(), so it should be freed by
 658          * numa_free_nodemask().
 659          */
 660         switch (td->o.numa_mem_mode) {
 661         case MPOL_PREFERRED:
 662                 td->o.numa_mem_prefer_node = atoi(nodelist);
 663                 break;
 664         case MPOL_INTERLEAVE:
 665         case MPOL_BIND:
 666                 td->o.numa_memnodesmask = numa_parse_nodestring(nodelist);
 667                 if (td->o.numa_memnodesmask == NULL) {
 668                         log_err("fio: numa_parse_nodestring failed\n");
 669                         td_verror(td, 1, "str_numa_memnodes_cb");
 670                         return 1;
 671                 }
 672                 break;
 673         case MPOL_LOCAL:
 674         case MPOL_DEFAULT:
 675         default:
 676                 break;
 677         }
 678
 679         td->o.numa_memmask_set = 1;
 680         return 0;
 681
 682 out:
 683         return 1;
 684 }
 685 #endif
 686
 687 #ifdef FIO_HAVE_TRIM
 688 static int str_verify_trim_cb(void *data, unsigned long long *val)
 689 {
 690         struct thread_data *td = data;
 691
 692         td->o.trim_percentage = *val;
 693         return 0;
 694 }
 695 #endif
 696
 697 static int str_fst_cb(void *data, const char *str)
 698 {
 699         struct thread_data *td = data;
 700         char *nr = get_opt_postfix(str);
 701
 702         td->file_service_nr = 1;
 703         if (nr) {
 704                 td->file_service_nr = atoi(nr);
 705                 free(nr);
 706         }
 707
 708         return 0;
 709 }
 710
 711 #ifdef CONFIG_SYNC_FILE_RANGE
 712 static int str_sfr_cb(void *data, const char *str)
 713 {
 714         struct thread_data *td = data;
 715         char *nr = get_opt_postfix(str);
 716
 717         td->sync_file_range_nr = 1;
 718         if (nr) {
 719                 td->sync_file_range_nr = atoi(nr);
 720                 free(nr);
 721         }
 722
 723         return 0;
 724 }
 725 #endif
 726
 727 static int str_random_distribution_cb(void *data, const char *str)
 728 {
 729         struct thread_data *td = data;
 730         double val;
 731         char *nr;
 732
 733         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 734                 val = 1.1;
 735         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 736                 val = 0.2;
 737         else
 738                 return 0;
 739
 740         nr = get_opt_postfix(str);
 741         if (nr && !str_to_float(nr, &val)) {
 742                 log_err("fio: random postfix parsing failed\n");
 743                 free(nr);
 744                 return 1;
 745         }
 746
 747         free(nr);
 748
 749         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 750                 if (val == 1.00) {
 751                         log_err("fio: zipf theta must different than 1.0\n");
 752                         return 1;
 753                 }
 754                 td->o.zipf_theta = val;
 755         } else {
 756                 if (val <= 0.00 || val >= 1.00) {
 757                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 758                         return 1;
 759                 }
 760                 td->o.pareto_h = val;
 761         }
 762
 763         return 0;
 764 }
 765
 766 static int check_dir(struct thread_data *td, char *fname)
 767 {
 768 #if 0
 769         char file[PATH_MAX], *dir;
 770         int elen = 0;
 771
 772         if (td->o.directory) {
 773                 strcpy(file, td->o.directory);
 774                 strcat(file, "/");
 775                 elen = strlen(file);
 776         }
 777
 778         sprintf(file + elen, "%s", fname);
 779         dir = dirname(file);
 780
 781         {
 782         struct stat sb;
 783         /*
 784          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 785          * yet, so we can't do this check right here...
 786          */
 787         if (lstat(dir, &sb) < 0) {
 788                 int ret = errno;
 789
 790                 log_err("fio: %s is not a directory\n", dir);
 791                 td_verror(td, ret, "lstat");
 792                 return 1;
 793         }
 794
 795         if (!S_ISDIR(sb.st_mode)) {
 796                 log_err("fio: %s is not a directory\n", dir);
 797                 return 1;
 798         }
 799         }
 800 #endif
 801
 802         return 0;
 803 }
 804
 805 /*
 806  * Return next file in the string. Files are separated with ':'. If the ':'
 807  * is escaped with a '\', then that ':' is part of the filename and does not
 808  * indicate a new file.
 809  */
 810 static char *get_next_file_name(char **ptr)
 811 {
 812         char *str = *ptr;
 813         char *p, *start;
 814
 815         if (!str || !strlen(str))
 816                 return NULL;
 817
 818         start = str;
 819         do {
 820                 /*
 821                  * No colon, we are done
 822                  */
 823                 p = strchr(str, ':');
 824                 if (!p) {
 825                         *ptr = NULL;
 826                         break;
 827                 }
 828
 829                 /*
 830                  * We got a colon, but it's the first character. Skip and
 831                  * continue
 832                  */
 833                 if (p == start) {
 834                         str = ++start;
 835                         continue;
 836                 }
 837
 838                 if (*(p - 1) != '\\') {
 839                         *p = '\0';
 840                         *ptr = p + 1;
 841                         break;
 842                 }
 843
 844                 memmove(p - 1, p, strlen(p) + 1);
 845                 str = p;
 846         } while (1);
 847
 848         return start;
 849 }
 850
 851 static int str_filename_cb(void *data, const char *input)
 852 {
 853         struct thread_data *td = data;
 854         char *fname, *str, *p;
 855
 856         p = str = strdup(input);
 857
 858         strip_blank_front(&str);
 859         strip_blank_end(str);
 860
 861         if (!td->files_index)
 862                 td->o.nr_files = 0;
 863
 864         while ((fname = get_next_file_name(&str)) != NULL) {
 865                 if (!strlen(fname))
 866                         break;
 867                 if (check_dir(td, fname)) {
 868                         free(p);
 869                         return 1;
 870                 }
 871                 add_file(td, fname);
 872                 td->o.nr_files++;
 873         }
 874
 875         free(p);
 876         return 0;
 877 }
 878
 879 static int str_directory_cb(void *data, const char fio_unused *str)
 880 {
 881         struct thread_data *td = data;
 882         struct stat sb;
 883
 884         if (lstat(td->o.directory, &sb) < 0) {
 885                 int ret = errno;
 886
 887                 log_err("fio: %s is not a directory\n", td->o.directory);
 888                 td_verror(td, ret, "lstat");
 889                 return 1;
 890         }
 891         if (!S_ISDIR(sb.st_mode)) {
 892                 log_err("fio: %s is not a directory\n", td->o.directory);
 893                 return 1;
 894         }
 895
 896         return 0;
 897 }
 898
 899 static int str_opendir_cb(void *data, const char fio_unused *str)
 900 {
 901         struct thread_data *td = data;
 902
 903         if (!td->files_index)
 904                 td->o.nr_files = 0;
 905
 906         return add_dir_files(td, td->o.opendir);
 907 }
 908
 909 static int str_verify_offset_cb(void *data, unsigned long long *off)
 910 {
 911         struct thread_data *td = data;
 912
 913         if (*off && *off < sizeof(struct verify_header)) {
 914                 log_err("fio: verify_offset too small\n");
 915                 return 1;
 916         }
 917
 918         td->o.verify_offset = *off;
 919         return 0;
 920 }
 921
 922 static int str_verify_pattern_cb(void *data, const char *input)
 923 {
 924         struct thread_data *td = data;
 925         long off;
 926         int i = 0, j = 0, len, k, base = 10;
 927         char* loc1, * loc2;
 928
 929         loc1 = strstr(input, "0x");
 930         loc2 = strstr(input, "0X");
 931         if (loc1 || loc2)
 932                 base = 16;
 933         off = strtol(input, NULL, base);
 934         if (off != LONG_MAX || errno != ERANGE) {
 935                 while (off) {
 936                         td->o.verify_pattern[i] = off & 0xff;
 937                         off >>= 8;
 938                         i++;
 939                 }
 940         } else {
 941                 len = strlen(input);
 942                 k = len - 1;
 943                 if (base == 16) {
 944                         if (loc1)
 945                                 j = loc1 - input + 2;
 946                         else
 947                                 j = loc2 - input + 2;
 948                 } else
 949                         return 1;
 950                 if (len - j < MAX_PATTERN_SIZE * 2) {
 951                         while (k >= j) {
 952                                 off = converthexchartoint(input[k--]);
 953                                 if (k >= j)
 954                                         off += (converthexchartoint(input[k--])
 955                                                 * 16);
 956                                 td->o.verify_pattern[i++] = (char) off;
 957                         }
 958                 }
 959         }
 960
 961         /*
 962          * Fill the pattern all the way to the end. This greatly reduces
 963          * the number of memcpy's we have to do when verifying the IO.
 964          */
 965         while (i > 1 && i * 2 <= MAX_PATTERN_SIZE) {
 966                 memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
 967                 i *= 2;
 968         }
 969         if (i == 1) {
 970                 /*
 971                  * The code in verify_io_u_pattern assumes a single byte pattern
 972                  * fills the whole verify pattern buffer.
 973                  */
 974                 memset(td->o.verify_pattern, td->o.verify_pattern[0],
 975                        MAX_PATTERN_SIZE);
 976         }
 977
 978         td->o.verify_pattern_bytes = i;
 979
 980         /*
 981          * VERIFY_META could already be set
 982          */
 983         if (td->o.verify == VERIFY_NONE)
 984                 td->o.verify = VERIFY_PATTERN;
 985
 986         return 0;
 987 }
 988
 989 static int str_lockfile_cb(void *data, const char *str)
 990 {
 991         struct thread_data *td = data;
 992         char *nr = get_opt_postfix(str);
 993
 994         td->o.lockfile_batch = 1;
 995         if (nr) {
 996                 td->o.lockfile_batch = atoi(nr);
 997                 free(nr);
 998         }
 999
1000         return 0;
1001 }
1002
1003 static int str_write_bw_log_cb(void *data, const char *str)
1004 {
1005         struct thread_data *td = data;
1006
1007         if (str)
1008                 td->o.bw_log_file = strdup(str);
1009
1010         td->o.write_bw_log = 1;
1011         return 0;
1012 }
1013
1014 static int str_write_lat_log_cb(void *data, const char *str)
1015 {
1016         struct thread_data *td = data;
1017
1018         if (str)
1019                 td->o.lat_log_file = strdup(str);
1020
1021         td->o.write_lat_log = 1;
1022         return 0;
1023 }
1024
1025 static int str_write_iops_log_cb(void *data, const char *str)
1026 {
1027         struct thread_data *td = data;
1028
1029         if (str)
1030                 td->o.iops_log_file = strdup(str);
1031
1032         td->o.write_iops_log = 1;
1033         return 0;
1034 }
1035
1036 static int str_gtod_reduce_cb(void *data, int *il)
1037 {
1038         struct thread_data *td = data;
1039         int val = *il;
1040
1041         td->o.disable_lat = !!val;
1042         td->o.disable_clat = !!val;
1043         td->o.disable_slat = !!val;
1044         td->o.disable_bw = !!val;
1045         td->o.clat_percentiles = !val;
1046         if (val)
1047                 td->tv_cache_mask = 63;
1048
1049         return 0;
1050 }
1051
1052 static int str_gtod_cpu_cb(void *data, long long *il)
1053 {
1054         struct thread_data *td = data;
1055         int val = *il;
1056
1057         td->o.gtod_cpu = val;
1058         td->o.gtod_offload = 1;
1059         return 0;
1060 }
1061
1062 static int str_size_cb(void *data, unsigned long long *__val)
1063 {
1064         struct thread_data *td = data;
1065         unsigned long long v = *__val;
1066
1067         if (parse_is_percent(v)) {
1068                 td->o.size = 0;
1069                 td->o.size_percent = -1ULL - v;
1070         } else
1071                 td->o.size = v;
1072
1073         return 0;
1074 }
1075
1076 static int rw_verify(struct fio_option *o, void *data)
1077 {
1078         struct thread_data *td = data;
1079
1080         if (read_only && td_write(td)) {
1081                 log_err("fio: job <%s> has write bit set, but fio is in"
1082                         " read-only mode\n", td->o.name);
1083                 return 1;
1084         }
1085
1086         return 0;
1087 }
1088
1089 static int gtod_cpu_verify(struct fio_option *o, void *data)
1090 {
1091 #ifndef FIO_HAVE_CPU_AFFINITY
1092         struct thread_data *td = data;
1093
1094         if (td->o.gtod_cpu) {
1095                 log_err("fio: platform must support CPU affinity for"
1096                         "gettimeofday() offloading\n");
1097                 return 1;
1098         }
1099 #endif
1100
1101         return 0;
1102 }
1103
1104 static int kb_base_verify(struct fio_option *o, void *data)
1105 {
1106         struct thread_data *td = data;
1107
1108         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
1109                 log_err("fio: kb_base set to nonsensical value: %u\n",
1110                                 td->o.kb_base);
1111                 return 1;
1112         }
1113
1114         return 0;
1115 }
1116
1117 /*
1118  * Map of job/command line options
1119  */
1120 static struct fio_option options[FIO_MAX_OPTS] = {
1121         {
1122                 .name   = "description",
1123                 .type   = FIO_OPT_STR_STORE,
1124                 .off1   = td_var_offset(description),
1125                 .help   = "Text job description",
1126         },
1127         {
1128                 .name   = "name",
1129                 .type   = FIO_OPT_STR_STORE,
1130                 .off1   = td_var_offset(name),
1131                 .help   = "Name of this job",
1132         },
1133         {
1134                 .name   = "directory",
1135                 .type   = FIO_OPT_STR_STORE,
1136                 .off1   = td_var_offset(directory),
1137                 .cb     = str_directory_cb,
1138                 .help   = "Directory to store files in",
1139         },
1140         {
1141                 .name   = "filename",
1142                 .type   = FIO_OPT_STR_STORE,
1143                 .off1   = td_var_offset(filename),
1144                 .cb     = str_filename_cb,
1145                 .prio   = -1, /* must come after "directory" */
1146                 .help   = "File(s) to use for the workload",
1147         },
1148         {
1149                 .name   = "kb_base",
1150                 .type   = FIO_OPT_INT,
1151                 .off1   = td_var_offset(kb_base),
1152                 .verify = kb_base_verify,
1153                 .prio   = 1,
1154                 .def    = "1024",
1155                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
1156         },
1157         {
1158                 .name   = "lockfile",
1159                 .type   = FIO_OPT_STR,
1160                 .cb     = str_lockfile_cb,
1161                 .off1   = td_var_offset(file_lock_mode),
1162                 .help   = "Lock file when doing IO to it",
1163                 .parent = "filename",
1164                 .def    = "none",
1165                 .posval = {
1166                           { .ival = "none",
1167                             .oval = FILE_LOCK_NONE,
1168                             .help = "No file locking",
1169                           },
1170                           { .ival = "exclusive",
1171                             .oval = FILE_LOCK_EXCLUSIVE,
1172                             .help = "Exclusive file lock",
1173                           },
1174                           {
1175                             .ival = "readwrite",
1176                             .oval = FILE_LOCK_READWRITE,
1177                             .help = "Read vs write lock",
1178                           },
1179                 },
1180         },
1181         {
1182                 .name   = "opendir",
1183                 .type   = FIO_OPT_STR_STORE,
1184                 .off1   = td_var_offset(opendir),
1185                 .cb     = str_opendir_cb,
1186                 .help   = "Recursively add files from this directory and down",
1187         },
1188         {
1189                 .name   = "rw",
1190                 .alias  = "readwrite",
1191                 .type   = FIO_OPT_STR,
1192                 .cb     = str_rw_cb,
1193                 .off1   = td_var_offset(td_ddir),
1194                 .help   = "IO direction",
1195                 .def    = "read",
1196                 .verify = rw_verify,
1197                 .posval = {
1198                           { .ival = "read",
1199                             .oval = TD_DDIR_READ,
1200                             .help = "Sequential read",
1201                           },
1202                           { .ival = "write",
1203                             .oval = TD_DDIR_WRITE,
1204                             .help = "Sequential write",
1205                           },
1206                           { .ival = "trim",
1207                             .oval = TD_DDIR_TRIM,
1208                             .help = "Sequential trim",
1209                           },
1210                           { .ival = "randread",
1211                             .oval = TD_DDIR_RANDREAD,
1212                             .help = "Random read",
1213                           },
1214                           { .ival = "randwrite",
1215                             .oval = TD_DDIR_RANDWRITE,
1216                             .help = "Random write",
1217                           },
1218                           { .ival = "randtrim",
1219                             .oval = TD_DDIR_RANDTRIM,
1220                             .help = "Random trim",
1221                           },
1222                           { .ival = "rw",
1223                             .oval = TD_DDIR_RW,
1224                             .help = "Sequential read and write mix",
1225                           },
1226                           { .ival = "readwrite",
1227                             .oval = TD_DDIR_RW,
1228                             .help = "Sequential read and write mix",
1229                           },
1230                           { .ival = "randrw",
1231                             .oval = TD_DDIR_RANDRW,
1232                             .help = "Random read and write mix"
1233                           },
1234                 },
1235         },
1236         {
1237                 .name   = "rw_sequencer",
1238                 .type   = FIO_OPT_STR,
1239                 .off1   = td_var_offset(rw_seq),
1240                 .help   = "IO offset generator modifier",
1241                 .def    = "sequential",
1242                 .posval = {
1243                           { .ival = "sequential",
1244                             .oval = RW_SEQ_SEQ,
1245                             .help = "Generate sequential offsets",
1246                           },
1247                           { .ival = "identical",
1248                             .oval = RW_SEQ_IDENT,
1249                             .help = "Generate identical offsets",
1250                           },
1251                 },
1252         },
1253
1254         {
1255                 .name   = "ioengine",
1256                 .type   = FIO_OPT_STR_STORE,
1257                 .off1   = td_var_offset(ioengine),
1258                 .help   = "IO engine to use",
1259                 .def    = FIO_PREFERRED_ENGINE,
1260                 .posval = {
1261                           { .ival = "sync",
1262                             .help = "Use read/write",
1263                           },
1264                           { .ival = "psync",
1265                             .help = "Use pread/pwrite",
1266                           },
1267                           { .ival = "vsync",
1268                             .help = "Use readv/writev",
1269                           },
1270 #ifdef CONFIG_LIBAIO
1271                           { .ival = "libaio",
1272                             .help = "Linux native asynchronous IO",
1273                           },
1274 #endif
1275 #ifdef CONFIG_POSIXAIO
1276                           { .ival = "posixaio",
1277                             .help = "POSIX asynchronous IO",
1278                           },
1279 #endif
1280 #ifdef CONFIG_SOLARISAIO
1281                           { .ival = "solarisaio",
1282                             .help = "Solaris native asynchronous IO",
1283                           },
1284 #endif
1285 #ifdef CONFIG_WINDOWSAIO
1286                           { .ival = "windowsaio",
1287                             .help = "Windows native asynchronous IO"
1288                           },
1289 #endif
1290                           { .ival = "mmap",
1291                             .help = "Memory mapped IO"
1292                           },
1293 #ifdef CONFIG_LINUX_SPLICE
1294                           { .ival = "splice",
1295                             .help = "splice/vmsplice based IO",
1296                           },
1297                           { .ival = "netsplice",
1298                             .help = "splice/vmsplice to/from the network",
1299                           },
1300 #endif
1301 #ifdef FIO_HAVE_SGIO
1302                           { .ival = "sg",
1303                             .help = "SCSI generic v3 IO",
1304                           },
1305 #endif
1306                           { .ival = "null",
1307                             .help = "Testing engine (no data transfer)",
1308                           },
1309                           { .ival = "net",
1310                             .help = "Network IO",
1311                           },
1312                           { .ival = "cpuio",
1313                             .help = "CPU cycle burner engine",
1314                           },
1315 #ifdef CONFIG_GUASI
1316                           { .ival = "guasi",
1317                             .help = "GUASI IO engine",
1318                           },
1319 #endif
1320 #ifdef FIO_HAVE_BINJECT
1321                           { .ival = "binject",
1322                             .help = "binject direct inject block engine",
1323                           },
1324 #endif
1325 #ifdef CONFIG_RDMA
1326                           { .ival = "rdma",
1327                             .help = "RDMA IO engine",
1328                           },
1329 #endif
1330 #ifdef CONFIG_FUSION_AW
1331                           { .ival = "fusion-aw-sync",
1332                             .help = "Fusion-io atomic write engine",
1333                           },
1334 #endif
1335 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1336                           { .ival = "e4defrag",
1337                             .help = "ext4 defrag engine",
1338                           },
1339 #endif
1340 #ifdef CONFIG_LINUX_FALLOCATE
1341                           { .ival = "falloc",
1342                             .help = "fallocate() file based engine",
1343                           },
1344 #endif
1345                           { .ival = "external",
1346                             .help = "Load external engine (append name)",
1347                           },
1348                 },
1349         },
1350         {
1351                 .name   = "iodepth",
1352                 .type   = FIO_OPT_INT,
1353                 .off1   = td_var_offset(iodepth),
1354                 .help   = "Number of IO buffers to keep in flight",
1355                 .minval = 1,
1356                 .def    = "1",
1357         },
1358         {
1359                 .name   = "iodepth_batch",
1360                 .alias  = "iodepth_batch_submit",
1361                 .type   = FIO_OPT_INT,
1362                 .off1   = td_var_offset(iodepth_batch),
1363                 .help   = "Number of IO buffers to submit in one go",
1364                 .parent = "iodepth",
1365                 .minval = 1,
1366                 .def    = "1",
1367         },
1368         {
1369                 .name   = "iodepth_batch_complete",
1370                 .type   = FIO_OPT_INT,
1371                 .off1   = td_var_offset(iodepth_batch_complete),
1372                 .help   = "Number of IO buffers to retrieve in one go",
1373                 .parent = "iodepth",
1374                 .minval = 0,
1375                 .def    = "1",
1376         },
1377         {
1378                 .name   = "iodepth_low",
1379                 .type   = FIO_OPT_INT,
1380                 .off1   = td_var_offset(iodepth_low),
1381                 .help   = "Low water mark for queuing depth",
1382                 .parent = "iodepth",
1383         },
1384         {
1385                 .name   = "size",
1386                 .type   = FIO_OPT_STR_VAL,
1387                 .cb     = str_size_cb,
1388                 .help   = "Total size of device or files",
1389         },
1390         {
1391                 .name   = "fill_device",
1392                 .alias  = "fill_fs",
1393                 .type   = FIO_OPT_BOOL,
1394                 .off1   = td_var_offset(fill_device),
1395                 .help   = "Write until an ENOSPC error occurs",
1396                 .def    = "0",
1397         },
1398         {
1399                 .name   = "filesize",
1400                 .type   = FIO_OPT_STR_VAL,
1401                 .off1   = td_var_offset(file_size_low),
1402                 .off2   = td_var_offset(file_size_high),
1403                 .minval = 1,
1404                 .help   = "Size of individual files",
1405         },
1406         {
1407                 .name   = "offset",
1408                 .alias  = "fileoffset",
1409                 .type   = FIO_OPT_STR_VAL,
1410                 .off1   = td_var_offset(start_offset),
1411                 .help   = "Start IO from this offset",
1412                 .def    = "0",
1413         },
1414         {
1415                 .name   = "offset_increment",
1416                 .type   = FIO_OPT_STR_VAL,
1417                 .off1   = td_var_offset(offset_increment),
1418                 .help   = "What is the increment from one offset to the next",
1419                 .parent = "offset",
1420                 .def    = "0",
1421         },
1422         {
1423                 .name   = "bs",
1424                 .alias  = "blocksize",
1425                 .type   = FIO_OPT_INT,
1426                 .off1   = td_var_offset(bs[DDIR_READ]),
1427                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1428                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1429                 .minval = 1,
1430                 .help   = "Block size unit",
1431                 .def    = "4k",
1432                 .parent = "rw",
1433         },
1434         {
1435                 .name   = "ba",
1436                 .alias  = "blockalign",
1437                 .type   = FIO_OPT_INT,
1438                 .off1   = td_var_offset(ba[DDIR_READ]),
1439                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1440                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1441                 .minval = 1,
1442                 .help   = "IO block offset alignment",
1443                 .parent = "rw",
1444         },
1445         {
1446                 .name   = "bsrange",
1447                 .alias  = "blocksize_range",
1448                 .type   = FIO_OPT_RANGE,
1449                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1450                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1451                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1452                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1453                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1454                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1455                 .minval = 1,
1456                 .help   = "Set block size range (in more detail than bs)",
1457                 .parent = "rw",
1458         },
1459         {
1460                 .name   = "bssplit",
1461                 .type   = FIO_OPT_STR,
1462                 .cb     = str_bssplit_cb,
1463                 .help   = "Set a specific mix of block sizes",
1464                 .parent = "rw",
1465         },
1466         {
1467                 .name   = "bs_unaligned",
1468                 .alias  = "blocksize_unaligned",
1469                 .type   = FIO_OPT_STR_SET,
1470                 .off1   = td_var_offset(bs_unaligned),
1471                 .help   = "Don't sector align IO buffer sizes",
1472                 .parent = "rw",
1473         },
1474         {
1475                 .name   = "randrepeat",
1476                 .type   = FIO_OPT_BOOL,
1477                 .off1   = td_var_offset(rand_repeatable),
1478                 .help   = "Use repeatable random IO pattern",
1479                 .def    = "1",
1480                 .parent = "rw",
1481         },
1482         {
1483                 .name   = "use_os_rand",
1484                 .type   = FIO_OPT_BOOL,
1485                 .off1   = td_var_offset(use_os_rand),
1486                 .help   = "Set to use OS random generator",
1487                 .def    = "0",
1488                 .parent = "rw",
1489         },
1490         {
1491                 .name   = "norandommap",
1492                 .type   = FIO_OPT_STR_SET,
1493                 .off1   = td_var_offset(norandommap),
1494                 .help   = "Accept potential duplicate random blocks",
1495                 .parent = "rw",
1496         },
1497         {
1498                 .name   = "softrandommap",
1499                 .type   = FIO_OPT_BOOL,
1500                 .off1   = td_var_offset(softrandommap),
1501                 .help   = "Set norandommap if randommap allocation fails",
1502                 .parent = "norandommap",
1503                 .def    = "0",
1504         },
1505         {
1506                 .name   = "random_generator",
1507                 .type   = FIO_OPT_STR,
1508                 .off1   = td_var_offset(random_generator),
1509                 .help   = "Type of random number generator to use",
1510                 .def    = "tausworthe",
1511                 .posval = {
1512                           { .ival = "tausworthe",
1513                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1514                             .help = "Strong Tausworthe generator",
1515                           },
1516                           { .ival = "lfsr",
1517                             .oval = FIO_RAND_GEN_LFSR,
1518                             .help = "Variable length LFSR",
1519                           },
1520                 },
1521         },
1522         {
1523                 .name   = "random_distribution",
1524                 .type   = FIO_OPT_STR,
1525                 .off1   = td_var_offset(random_distribution),
1526                 .cb     = str_random_distribution_cb,
1527                 .help   = "Random offset distribution generator",
1528                 .def    = "random",
1529                 .posval = {
1530                           { .ival = "random",
1531                             .oval = FIO_RAND_DIST_RANDOM,
1532                             .help = "Completely random",
1533                           },
1534                           { .ival = "zipf",
1535                             .oval = FIO_RAND_DIST_ZIPF,
1536                             .help = "Zipf distribution",
1537                           },
1538                           { .ival = "pareto",
1539                             .oval = FIO_RAND_DIST_PARETO,
1540                             .help = "Pareto distribution",
1541                           },
1542                 },
1543         },
1544         {
1545                 .name   = "nrfiles",
1546                 .alias  = "nr_files",
1547                 .type   = FIO_OPT_INT,
1548                 .off1   = td_var_offset(nr_files),
1549                 .help   = "Split job workload between this number of files",
1550                 .def    = "1",
1551         },
1552         {
1553                 .name   = "openfiles",
1554                 .type   = FIO_OPT_INT,
1555                 .off1   = td_var_offset(open_files),
1556                 .help   = "Number of files to keep open at the same time",
1557         },
1558         {
1559                 .name   = "file_service_type",
1560                 .type   = FIO_OPT_STR,
1561                 .cb     = str_fst_cb,
1562                 .off1   = td_var_offset(file_service_type),
1563                 .help   = "How to select which file to service next",
1564                 .def    = "roundrobin",
1565                 .posval = {
1566                           { .ival = "random",
1567                             .oval = FIO_FSERVICE_RANDOM,
1568                             .help = "Choose a file at random",
1569                           },
1570                           { .ival = "roundrobin",
1571                             .oval = FIO_FSERVICE_RR,
1572                             .help = "Round robin select files",
1573                           },
1574                           { .ival = "sequential",
1575                             .oval = FIO_FSERVICE_SEQ,
1576                             .help = "Finish one file before moving to the next",
1577                           },
1578                 },
1579                 .parent = "nrfiles",
1580         },
1581 #ifdef CONFIG_POSIX_FALLOCATE
1582         {
1583                 .name   = "fallocate",
1584                 .type   = FIO_OPT_STR,
1585                 .off1   = td_var_offset(fallocate_mode),
1586                 .help   = "Whether pre-allocation is performed when laying out files",
1587                 .def    = "posix",
1588                 .posval = {
1589                           { .ival = "none",
1590                             .oval = FIO_FALLOCATE_NONE,
1591                             .help = "Do not pre-allocate space",
1592                           },
1593                           { .ival = "posix",
1594                             .oval = FIO_FALLOCATE_POSIX,
1595                             .help = "Use posix_fallocate()",
1596                           },
1597 #ifdef CONFIG_LINUX_FALLOCATE
1598                           { .ival = "keep",
1599                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1600                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1601                           },
1602 #endif
1603                           /* Compatibility with former boolean values */
1604                           { .ival = "0",
1605                             .oval = FIO_FALLOCATE_NONE,
1606                             .help = "Alias for 'none'",
1607                           },
1608                           { .ival = "1",
1609                             .oval = FIO_FALLOCATE_POSIX,
1610                             .help = "Alias for 'posix'",
1611                           },
1612                 },
1613         },
1614 #endif  /* CONFIG_POSIX_FALLOCATE */
1615         {
1616                 .name   = "fadvise_hint",
1617                 .type   = FIO_OPT_BOOL,
1618                 .off1   = td_var_offset(fadvise_hint),
1619                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1620                 .def    = "1",
1621         },
1622         {
1623                 .name   = "fsync",
1624                 .type   = FIO_OPT_INT,
1625                 .off1   = td_var_offset(fsync_blocks),
1626                 .help   = "Issue fsync for writes every given number of blocks",
1627                 .def    = "0",
1628         },
1629         {
1630                 .name   = "fdatasync",
1631                 .type   = FIO_OPT_INT,
1632                 .off1   = td_var_offset(fdatasync_blocks),
1633                 .help   = "Issue fdatasync for writes every given number of blocks",
1634                 .def    = "0",
1635         },
1636         {
1637                 .name   = "write_barrier",
1638                 .type   = FIO_OPT_INT,
1639                 .off1   = td_var_offset(barrier_blocks),
1640                 .help   = "Make every Nth write a barrier write",
1641                 .def    = "0",
1642         },
1643 #ifdef CONFIG_SYNC_FILE_RANGE
1644         {
1645                 .name   = "sync_file_range",
1646                 .posval = {
1647                           { .ival = "wait_before",
1648                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1649                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1650                             .or   = 1,
1651                           },
1652                           { .ival = "write",
1653                             .oval = SYNC_FILE_RANGE_WRITE,
1654                             .help = "SYNC_FILE_RANGE_WRITE",
1655                             .or   = 1,
1656                           },
1657                           {
1658                             .ival = "wait_after",
1659                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1660                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1661                             .or   = 1,
1662                           },
1663                 },
1664                 .type   = FIO_OPT_STR_MULTI,
1665                 .cb     = str_sfr_cb,
1666                 .off1   = td_var_offset(sync_file_range),
1667                 .help   = "Use sync_file_range()",
1668         },
1669 #endif
1670         {
1671                 .name   = "direct",
1672                 .type   = FIO_OPT_BOOL,
1673                 .off1   = td_var_offset(odirect),
1674                 .help   = "Use O_DIRECT IO (negates buffered)",
1675                 .def    = "0",
1676         },
1677         {
1678                 .name   = "buffered",
1679                 .type   = FIO_OPT_BOOL,
1680                 .off1   = td_var_offset(odirect),
1681                 .neg    = 1,
1682                 .help   = "Use buffered IO (negates direct)",
1683                 .def    = "1",
1684         },
1685         {
1686                 .name   = "overwrite",
1687                 .type   = FIO_OPT_BOOL,
1688                 .off1   = td_var_offset(overwrite),
1689                 .help   = "When writing, set whether to overwrite current data",
1690                 .def    = "0",
1691         },
1692         {
1693                 .name   = "loops",
1694                 .type   = FIO_OPT_INT,
1695                 .off1   = td_var_offset(loops),
1696                 .help   = "Number of times to run the job",
1697                 .def    = "1",
1698         },
1699         {
1700                 .name   = "numjobs",
1701                 .type   = FIO_OPT_INT,
1702                 .off1   = td_var_offset(numjobs),
1703                 .help   = "Duplicate this job this many times",
1704                 .def    = "1",
1705         },
1706         {
1707                 .name   = "startdelay",
1708                 .type   = FIO_OPT_STR_VAL_TIME,
1709                 .off1   = td_var_offset(start_delay),
1710                 .help   = "Only start job when this period has passed",
1711                 .def    = "0",
1712         },
1713         {
1714                 .name   = "runtime",
1715                 .alias  = "timeout",
1716                 .type   = FIO_OPT_STR_VAL_TIME,
1717                 .off1   = td_var_offset(timeout),
1718                 .help   = "Stop workload when this amount of time has passed",
1719                 .def    = "0",
1720         },
1721         {
1722                 .name   = "time_based",
1723                 .type   = FIO_OPT_STR_SET,
1724                 .off1   = td_var_offset(time_based),
1725                 .help   = "Keep running until runtime/timeout is met",
1726         },
1727         {
1728                 .name   = "ramp_time",
1729                 .type   = FIO_OPT_STR_VAL_TIME,
1730                 .off1   = td_var_offset(ramp_time),
1731                 .help   = "Ramp up time before measuring performance",
1732         },
1733         {
1734                 .name   = "clocksource",
1735                 .type   = FIO_OPT_STR,
1736                 .cb     = fio_clock_source_cb,
1737                 .off1   = td_var_offset(clocksource),
1738                 .help   = "What type of timing source to use",
1739                 .posval = {
1740 #ifdef CONFIG_GETTIMEOFDAY
1741                           { .ival = "gettimeofday",
1742                             .oval = CS_GTOD,
1743                             .help = "Use gettimeofday(2) for timing",
1744                           },
1745 #endif
1746 #ifdef CONFIG_CLOCK_GETTIME
1747                           { .ival = "clock_gettime",
1748                             .oval = CS_CGETTIME,
1749                             .help = "Use clock_gettime(2) for timing",
1750                           },
1751 #endif
1752 #ifdef ARCH_HAVE_CPU_CLOCK
1753                           { .ival = "cpu",
1754                             .oval = CS_CPUCLOCK,
1755                             .help = "Use CPU private clock",
1756                           },
1757 #endif
1758                 },
1759         },
1760         {
1761                 .name   = "mem",
1762                 .alias  = "iomem",
1763                 .type   = FIO_OPT_STR,
1764                 .cb     = str_mem_cb,
1765                 .off1   = td_var_offset(mem_type),
1766                 .help   = "Backing type for IO buffers",
1767                 .def    = "malloc",
1768                 .posval = {
1769                           { .ival = "malloc",
1770                             .oval = MEM_MALLOC,
1771                             .help = "Use malloc(3) for IO buffers",
1772                           },
1773                           { .ival = "shm",
1774                             .oval = MEM_SHM,
1775                             .help = "Use shared memory segments for IO buffers",
1776                           },
1777 #ifdef FIO_HAVE_HUGETLB
1778                           { .ival = "shmhuge",
1779                             .oval = MEM_SHMHUGE,
1780                             .help = "Like shm, but use huge pages",
1781                           },
1782 #endif
1783                           { .ival = "mmap",
1784                             .oval = MEM_MMAP,
1785                             .help = "Use mmap(2) (file or anon) for IO buffers",
1786                           },
1787 #ifdef FIO_HAVE_HUGETLB
1788                           { .ival = "mmaphuge",
1789                             .oval = MEM_MMAPHUGE,
1790                             .help = "Like mmap, but use huge pages",
1791                           },
1792 #endif
1793                   },
1794         },
1795         {
1796                 .name   = "iomem_align",
1797                 .alias  = "mem_align",
1798                 .type   = FIO_OPT_INT,
1799                 .off1   = td_var_offset(mem_align),
1800                 .minval = 0,
1801                 .help   = "IO memory buffer offset alignment",
1802                 .def    = "0",
1803                 .parent = "iomem",
1804         },
1805         {
1806                 .name   = "verify",
1807                 .type   = FIO_OPT_STR,
1808                 .off1   = td_var_offset(verify),
1809                 .help   = "Verify data written",
1810                 .cb     = str_verify_cb,
1811                 .def    = "0",
1812                 .posval = {
1813                           { .ival = "0",
1814                             .oval = VERIFY_NONE,
1815                             .help = "Don't do IO verification",
1816                           },
1817                           { .ival = "md5",
1818                             .oval = VERIFY_MD5,
1819                             .help = "Use md5 checksums for verification",
1820                           },
1821                           { .ival = "crc64",
1822                             .oval = VERIFY_CRC64,
1823                             .help = "Use crc64 checksums for verification",
1824                           },
1825                           { .ival = "crc32",
1826                             .oval = VERIFY_CRC32,
1827                             .help = "Use crc32 checksums for verification",
1828                           },
1829                           { .ival = "crc32c-intel",
1830                             .oval = VERIFY_CRC32C,
1831                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1832                           },
1833                           { .ival = "crc32c",
1834                             .oval = VERIFY_CRC32C,
1835                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1836                           },
1837                           { .ival = "crc16",
1838                             .oval = VERIFY_CRC16,
1839                             .help = "Use crc16 checksums for verification",
1840                           },
1841                           { .ival = "crc7",
1842                             .oval = VERIFY_CRC7,
1843                             .help = "Use crc7 checksums for verification",
1844                           },
1845                           { .ival = "sha1",
1846                             .oval = VERIFY_SHA1,
1847                             .help = "Use sha1 checksums for verification",
1848                           },
1849                           { .ival = "sha256",
1850                             .oval = VERIFY_SHA256,
1851                             .help = "Use sha256 checksums for verification",
1852                           },
1853                           { .ival = "sha512",
1854                             .oval = VERIFY_SHA512,
1855                             .help = "Use sha512 checksums for verification",
1856                           },
1857                           { .ival = "meta",
1858                             .oval = VERIFY_META,
1859                             .help = "Use io information",
1860                           },
1861                           {
1862                             .ival = "null",
1863                             .oval = VERIFY_NULL,
1864                             .help = "Pretend to verify",
1865                           },
1866                 },
1867         },
1868         {
1869                 .name   = "do_verify",
1870                 .type   = FIO_OPT_BOOL,
1871                 .off1   = td_var_offset(do_verify),
1872                 .help   = "Run verification stage after write",
1873                 .def    = "1",
1874                 .parent = "verify",
1875         },
1876         {
1877                 .name   = "verifysort",
1878                 .type   = FIO_OPT_BOOL,
1879                 .off1   = td_var_offset(verifysort),
1880                 .help   = "Sort written verify blocks for read back",
1881                 .def    = "1",
1882                 .parent = "verify",
1883         },
1884         {
1885                 .name   = "verifysort_nr",
1886                 .type   = FIO_OPT_INT,
1887                 .off1   = td_var_offset(verifysort_nr),
1888                 .help   = "Pre-load and sort verify blocks for a read workload",
1889                 .minval = 0,
1890                 .maxval = 131072,
1891                 .def    = "1024",
1892                 .parent = "verify",
1893         },
1894         {
1895                 .name   = "verify_interval",
1896                 .type   = FIO_OPT_INT,
1897                 .off1   = td_var_offset(verify_interval),
1898                 .minval = 2 * sizeof(struct verify_header),
1899                 .help   = "Store verify buffer header every N bytes",
1900                 .parent = "verify",
1901         },
1902         {
1903                 .name   = "verify_offset",
1904                 .type   = FIO_OPT_INT,
1905                 .help   = "Offset verify header location by N bytes",
1906                 .def    = "0",
1907                 .cb     = str_verify_offset_cb,
1908                 .parent = "verify",
1909         },
1910         {
1911                 .name   = "verify_pattern",
1912                 .type   = FIO_OPT_STR,
1913                 .cb     = str_verify_pattern_cb,
1914                 .help   = "Fill pattern for IO buffers",
1915                 .parent = "verify",
1916         },
1917         {
1918                 .name   = "verify_fatal",
1919                 .type   = FIO_OPT_BOOL,
1920                 .off1   = td_var_offset(verify_fatal),
1921                 .def    = "0",
1922                 .help   = "Exit on a single verify failure, don't continue",
1923                 .parent = "verify",
1924         },
1925         {
1926                 .name   = "verify_dump",
1927                 .type   = FIO_OPT_BOOL,
1928                 .off1   = td_var_offset(verify_dump),
1929                 .def    = "0",
1930                 .help   = "Dump contents of good and bad blocks on failure",
1931                 .parent = "verify",
1932         },
1933         {
1934                 .name   = "verify_async",
1935                 .type   = FIO_OPT_INT,
1936                 .off1   = td_var_offset(verify_async),
1937                 .def    = "0",
1938                 .help   = "Number of async verifier threads to use",
1939                 .parent = "verify",
1940         },
1941         {
1942                 .name   = "verify_backlog",
1943                 .type   = FIO_OPT_STR_VAL,
1944                 .off1   = td_var_offset(verify_backlog),
1945                 .help   = "Verify after this number of blocks are written",
1946                 .parent = "verify",
1947         },
1948         {
1949                 .name   = "verify_backlog_batch",
1950                 .type   = FIO_OPT_INT,
1951                 .off1   = td_var_offset(verify_batch),
1952                 .help   = "Verify this number of IO blocks",
1953                 .parent = "verify",
1954         },
1955 #ifdef FIO_HAVE_CPU_AFFINITY
1956         {
1957                 .name   = "verify_async_cpus",
1958                 .type   = FIO_OPT_STR,
1959                 .cb     = str_verify_cpus_allowed_cb,
1960                 .help   = "Set CPUs allowed for async verify threads",
1961                 .parent = "verify_async",
1962         },
1963 #endif
1964         {
1965                 .name   = "experimental_verify",
1966                 .off1   = td_var_offset(experimental_verify),
1967                 .type   = FIO_OPT_BOOL,
1968                 .help   = "Enable experimental verification",
1969         },
1970 #ifdef FIO_HAVE_TRIM
1971         {
1972                 .name   = "trim_percentage",
1973                 .type   = FIO_OPT_INT,
1974                 .cb     = str_verify_trim_cb,
1975                 .maxval = 100,
1976                 .help   = "Number of verify blocks to discard/trim",
1977                 .parent = "verify",
1978                 .def    = "0",
1979         },
1980         {
1981                 .name   = "trim_verify_zero",
1982                 .type   = FIO_OPT_INT,
1983                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1984                 .off1   = td_var_offset(trim_zero),
1985                 .parent = "trim_percentage",
1986                 .def    = "1",
1987         },
1988         {
1989                 .name   = "trim_backlog",
1990                 .type   = FIO_OPT_STR_VAL,
1991                 .off1   = td_var_offset(trim_backlog),
1992                 .help   = "Trim after this number of blocks are written",
1993                 .parent = "trim_percentage",
1994         },
1995         {
1996                 .name   = "trim_backlog_batch",
1997                 .type   = FIO_OPT_INT,
1998                 .off1   = td_var_offset(trim_batch),
1999                 .help   = "Trim this number of IO blocks",
2000                 .parent = "trim_percentage",
2001         },
2002 #endif
2003         {
2004                 .name   = "write_iolog",
2005                 .type   = FIO_OPT_STR_STORE,
2006                 .off1   = td_var_offset(write_iolog_file),
2007                 .help   = "Store IO pattern to file",
2008         },
2009         {
2010                 .name   = "read_iolog",
2011                 .type   = FIO_OPT_STR_STORE,
2012                 .off1   = td_var_offset(read_iolog_file),
2013                 .help   = "Playback IO pattern from file",
2014         },
2015         {
2016                 .name   = "replay_no_stall",
2017                 .type   = FIO_OPT_INT,
2018                 .off1   = td_var_offset(no_stall),
2019                 .def    = "0",
2020                 .parent = "read_iolog",
2021                 .help   = "Playback IO pattern file as fast as possible without stalls",
2022         },
2023         {
2024                 .name   = "replay_redirect",
2025                 .type   = FIO_OPT_STR_STORE,
2026                 .off1   = td_var_offset(replay_redirect),
2027                 .parent = "read_iolog",
2028                 .help   = "Replay all I/O onto this device, regardless of trace device",
2029         },
2030         {
2031                 .name   = "exec_prerun",
2032                 .type   = FIO_OPT_STR_STORE,
2033                 .off1   = td_var_offset(exec_prerun),
2034                 .help   = "Execute this file prior to running job",
2035         },
2036         {
2037                 .name   = "exec_postrun",
2038                 .type   = FIO_OPT_STR_STORE,
2039                 .off1   = td_var_offset(exec_postrun),
2040                 .help   = "Execute this file after running job",
2041         },
2042 #ifdef FIO_HAVE_IOSCHED_SWITCH
2043         {
2044                 .name   = "ioscheduler",
2045                 .type   = FIO_OPT_STR_STORE,
2046                 .off1   = td_var_offset(ioscheduler),
2047                 .help   = "Use this IO scheduler on the backing device",
2048         },
2049 #endif
2050         {
2051                 .name   = "zonesize",
2052                 .type   = FIO_OPT_STR_VAL,
2053                 .off1   = td_var_offset(zone_size),
2054                 .help   = "Amount of data to read per zone",
2055                 .def    = "0",
2056         },
2057         {
2058                 .name   = "zonerange",
2059                 .type   = FIO_OPT_STR_VAL,
2060                 .off1   = td_var_offset(zone_range),
2061                 .help   = "Give size of an IO zone",
2062                 .def    = "0",
2063         },
2064         {
2065                 .name   = "zoneskip",
2066                 .type   = FIO_OPT_STR_VAL,
2067                 .off1   = td_var_offset(zone_skip),
2068                 .help   = "Space between IO zones",
2069                 .def    = "0",
2070         },
2071         {
2072                 .name   = "lockmem",
2073                 .type   = FIO_OPT_STR_VAL,
2074                 .cb     = str_lockmem_cb,
2075                 .help   = "Lock down this amount of memory",
2076                 .def    = "0",
2077         },
2078         {
2079                 .name   = "rwmixread",
2080                 .type   = FIO_OPT_INT,
2081                 .cb     = str_rwmix_read_cb,
2082                 .maxval = 100,
2083                 .help   = "Percentage of mixed workload that is reads",
2084                 .def    = "50",
2085         },
2086         {
2087                 .name   = "rwmixwrite",
2088                 .type   = FIO_OPT_INT,
2089                 .cb     = str_rwmix_write_cb,
2090                 .maxval = 100,
2091                 .help   = "Percentage of mixed workload that is writes",
2092                 .def    = "50",
2093         },
2094         {
2095                 .name   = "rwmixcycle",
2096                 .type   = FIO_OPT_DEPRECATED,
2097         },
2098         {
2099                 .name   = "nice",
2100                 .type   = FIO_OPT_INT,
2101                 .off1   = td_var_offset(nice),
2102                 .help   = "Set job CPU nice value",
2103                 .minval = -19,
2104                 .maxval = 20,
2105                 .def    = "0",
2106         },
2107 #ifdef FIO_HAVE_IOPRIO
2108         {
2109                 .name   = "prio",
2110                 .type   = FIO_OPT_INT,
2111                 .cb     = str_prio_cb,
2112                 .help   = "Set job IO priority value",
2113                 .minval = 0,
2114                 .maxval = 7,
2115         },
2116         {
2117                 .name   = "prioclass",
2118                 .type   = FIO_OPT_INT,
2119                 .cb     = str_prioclass_cb,
2120                 .help   = "Set job IO priority class",
2121                 .minval = 0,
2122                 .maxval = 3,
2123         },
2124 #endif
2125         {
2126                 .name   = "thinktime",
2127                 .type   = FIO_OPT_INT,
2128                 .off1   = td_var_offset(thinktime),
2129                 .help   = "Idle time between IO buffers (usec)",
2130                 .def    = "0",
2131         },
2132         {
2133                 .name   = "thinktime_spin",
2134                 .type   = FIO_OPT_INT,
2135                 .off1   = td_var_offset(thinktime_spin),
2136                 .help   = "Start think time by spinning this amount (usec)",
2137                 .def    = "0",
2138                 .parent = "thinktime",
2139         },
2140         {
2141                 .name   = "thinktime_blocks",
2142                 .type   = FIO_OPT_INT,
2143                 .off1   = td_var_offset(thinktime_blocks),
2144                 .help   = "IO buffer period between 'thinktime'",
2145                 .def    = "1",
2146                 .parent = "thinktime",
2147         },
2148         {
2149                 .name   = "rate",
2150                 .type   = FIO_OPT_INT,
2151                 .off1   = td_var_offset(rate[DDIR_READ]),
2152                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2153                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2154                 .help   = "Set bandwidth rate",
2155         },
2156         {
2157                 .name   = "ratemin",
2158                 .type   = FIO_OPT_INT,
2159                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2160                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2161                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2162                 .help   = "Job must meet this rate or it will be shutdown",
2163                 .parent = "rate",
2164         },
2165         {
2166                 .name   = "rate_iops",
2167                 .type   = FIO_OPT_INT,
2168                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2169                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2170                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2171                 .help   = "Limit IO used to this number of IO operations/sec",
2172         },
2173         {
2174                 .name   = "rate_iops_min",
2175                 .type   = FIO_OPT_INT,
2176                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2177                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2178                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2179                 .help   = "Job must meet this rate or it will be shut down",
2180                 .parent = "rate_iops",
2181         },
2182         {
2183                 .name   = "ratecycle",
2184                 .type   = FIO_OPT_INT,
2185                 .off1   = td_var_offset(ratecycle),
2186                 .help   = "Window average for rate limits (msec)",
2187                 .def    = "1000",
2188                 .parent = "rate",
2189         },
2190         {
2191                 .name   = "max_latency",
2192                 .type   = FIO_OPT_INT,
2193                 .off1   = td_var_offset(max_latency),
2194                 .help   = "Maximum tolerated IO latency (usec)",
2195         },
2196         {
2197                 .name   = "invalidate",
2198                 .type   = FIO_OPT_BOOL,
2199                 .off1   = td_var_offset(invalidate_cache),
2200                 .help   = "Invalidate buffer/page cache prior to running job",
2201                 .def    = "1",
2202         },
2203         {
2204                 .name   = "sync",
2205                 .type   = FIO_OPT_BOOL,
2206                 .off1   = td_var_offset(sync_io),
2207                 .help   = "Use O_SYNC for buffered writes",
2208                 .def    = "0",
2209                 .parent = "buffered",
2210         },
2211         {
2212                 .name   = "bwavgtime",
2213                 .type   = FIO_OPT_INT,
2214                 .off1   = td_var_offset(bw_avg_time),
2215                 .help   = "Time window over which to calculate bandwidth"
2216                           " (msec)",
2217                 .def    = "500",
2218                 .parent = "write_bw_log",
2219         },
2220         {
2221                 .name   = "iopsavgtime",
2222                 .type   = FIO_OPT_INT,
2223                 .off1   = td_var_offset(iops_avg_time),
2224                 .help   = "Time window over which to calculate IOPS (msec)",
2225                 .def    = "500",
2226                 .parent = "write_iops_log",
2227         },
2228         {
2229                 .name   = "create_serialize",
2230                 .type   = FIO_OPT_BOOL,
2231                 .off1   = td_var_offset(create_serialize),
2232                 .help   = "Serialize creating of job files",
2233                 .def    = "1",
2234         },
2235         {
2236                 .name   = "create_fsync",
2237                 .type   = FIO_OPT_BOOL,
2238                 .off1   = td_var_offset(create_fsync),
2239                 .help   = "fsync file after creation",
2240                 .def    = "1",
2241         },
2242         {
2243                 .name   = "create_on_open",
2244                 .type   = FIO_OPT_BOOL,
2245                 .off1   = td_var_offset(create_on_open),
2246                 .help   = "Create files when they are opened for IO",
2247                 .def    = "0",
2248         },
2249         {
2250                 .name   = "create_only",
2251                 .type   = FIO_OPT_BOOL,
2252                 .off1   = td_var_offset(create_only),
2253                 .help   = "Only perform file creation phase",
2254                 .def    = "0",
2255         },
2256         {
2257                 .name   = "pre_read",
2258                 .type   = FIO_OPT_BOOL,
2259                 .off1   = td_var_offset(pre_read),
2260                 .help   = "Pre-read files before starting official testing",
2261                 .def    = "0",
2262         },
2263         {
2264                 .name   = "cpuload",
2265                 .type   = FIO_OPT_INT,
2266                 .off1   = td_var_offset(cpuload),
2267                 .help   = "Use this percentage of CPU",
2268         },
2269         {
2270                 .name   = "cpuchunks",
2271                 .type   = FIO_OPT_INT,
2272                 .off1   = td_var_offset(cpucycle),
2273                 .help   = "Length of the CPU burn cycles (usecs)",
2274                 .def    = "50000",
2275                 .parent = "cpuload",
2276         },
2277 #ifdef FIO_HAVE_CPU_AFFINITY
2278         {
2279                 .name   = "cpumask",
2280                 .type   = FIO_OPT_INT,
2281                 .cb     = str_cpumask_cb,
2282                 .help   = "CPU affinity mask",
2283         },
2284         {
2285                 .name   = "cpus_allowed",
2286                 .type   = FIO_OPT_STR,
2287                 .cb     = str_cpus_allowed_cb,
2288                 .help   = "Set CPUs allowed",
2289         },
2290 #endif
2291 #ifdef CONFIG_LIBNUMA
2292         {
2293                 .name   = "numa_cpu_nodes",
2294                 .type   = FIO_OPT_STR,
2295                 .cb     = str_numa_cpunodes_cb,
2296                 .help   = "NUMA CPU nodes bind",
2297         },
2298         {
2299                 .name   = "numa_mem_policy",
2300                 .type   = FIO_OPT_STR,
2301                 .cb     = str_numa_mpol_cb,
2302                 .help   = "NUMA memory policy setup",
2303         },
2304 #endif
2305         {
2306                 .name   = "end_fsync",
2307                 .type   = FIO_OPT_BOOL,
2308                 .off1   = td_var_offset(end_fsync),
2309                 .help   = "Include fsync at the end of job",
2310                 .def    = "0",
2311         },
2312         {
2313                 .name   = "fsync_on_close",
2314                 .type   = FIO_OPT_BOOL,
2315                 .off1   = td_var_offset(fsync_on_close),
2316                 .help   = "fsync files on close",
2317                 .def    = "0",
2318         },
2319         {
2320                 .name   = "unlink",
2321                 .type   = FIO_OPT_BOOL,
2322                 .off1   = td_var_offset(unlink),
2323                 .help   = "Unlink created files after job has completed",
2324                 .def    = "0",
2325         },
2326         {
2327                 .name   = "exitall",
2328                 .type   = FIO_OPT_STR_SET,
2329                 .cb     = str_exitall_cb,
2330                 .help   = "Terminate all jobs when one exits",
2331         },
2332         {
2333                 .name   = "stonewall",
2334                 .alias  = "wait_for_previous",
2335                 .type   = FIO_OPT_STR_SET,
2336                 .off1   = td_var_offset(stonewall),
2337                 .help   = "Insert a hard barrier between this job and previous",
2338         },
2339         {
2340                 .name   = "new_group",
2341                 .type   = FIO_OPT_STR_SET,
2342                 .off1   = td_var_offset(new_group),
2343                 .help   = "Mark the start of a new group (for reporting)",
2344         },
2345         {
2346                 .name   = "thread",
2347                 .type   = FIO_OPT_STR_SET,
2348                 .off1   = td_var_offset(use_thread),
2349                 .help   = "Use threads instead of forks",
2350         },
2351         {
2352                 .name   = "write_bw_log",
2353                 .type   = FIO_OPT_STR,
2354                 .off1   = td_var_offset(write_bw_log),
2355                 .cb     = str_write_bw_log_cb,
2356                 .help   = "Write log of bandwidth during run",
2357         },
2358         {
2359                 .name   = "write_lat_log",
2360                 .type   = FIO_OPT_STR,
2361                 .off1   = td_var_offset(write_lat_log),
2362                 .cb     = str_write_lat_log_cb,
2363                 .help   = "Write log of latency during run",
2364         },
2365         {
2366                 .name   = "write_iops_log",
2367                 .type   = FIO_OPT_STR,
2368                 .off1   = td_var_offset(write_iops_log),
2369                 .cb     = str_write_iops_log_cb,
2370                 .help   = "Write log of IOPS during run",
2371         },
2372         {
2373                 .name   = "log_avg_msec",
2374                 .type   = FIO_OPT_INT,
2375                 .off1   = td_var_offset(log_avg_msec),
2376                 .help   = "Average bw/iops/lat logs over this period of time",
2377                 .def    = "0",
2378         },
2379         {
2380                 .name   = "hugepage-size",
2381                 .type   = FIO_OPT_INT,
2382                 .off1   = td_var_offset(hugepage_size),
2383                 .help   = "When using hugepages, specify size of each page",
2384                 .def    = __fio_stringify(FIO_HUGE_PAGE),
2385         },
2386         {
2387                 .name   = "group_reporting",
2388                 .type   = FIO_OPT_STR_SET,
2389                 .off1   = td_var_offset(group_reporting),
2390                 .help   = "Do reporting on a per-group basis",
2391         },
2392         {
2393                 .name   = "zero_buffers",
2394                 .type   = FIO_OPT_STR_SET,
2395                 .off1   = td_var_offset(zero_buffers),
2396                 .help   = "Init IO buffers to all zeroes",
2397         },
2398         {
2399                 .name   = "refill_buffers",
2400                 .type   = FIO_OPT_STR_SET,
2401                 .off1   = td_var_offset(refill_buffers),
2402                 .help   = "Refill IO buffers on every IO submit",
2403         },
2404         {
2405                 .name   = "scramble_buffers",
2406                 .type   = FIO_OPT_BOOL,
2407                 .off1   = td_var_offset(scramble_buffers),
2408                 .help   = "Slightly scramble buffers on every IO submit",
2409                 .def    = "1",
2410         },
2411         {
2412                 .name   = "buffer_compress_percentage",
2413                 .type   = FIO_OPT_INT,
2414                 .off1   = td_var_offset(compress_percentage),
2415                 .maxval = 100,
2416                 .minval = 1,
2417                 .help   = "How compressible the buffer is (approximately)",
2418         },
2419         {
2420                 .name   = "buffer_compress_chunk",
2421                 .type   = FIO_OPT_INT,
2422                 .off1   = td_var_offset(compress_chunk),
2423                 .parent = "buffer_compress_percentage",
2424                 .help   = "Size of compressible region in buffer",
2425         },
2426         {
2427                 .name   = "clat_percentiles",
2428                 .type   = FIO_OPT_BOOL,
2429                 .off1   = td_var_offset(clat_percentiles),
2430                 .help   = "Enable the reporting of completion latency percentiles",
2431                 .def    = "1",
2432         },
2433         {
2434                 .name   = "percentile_list",
2435                 .type   = FIO_OPT_FLOAT_LIST,
2436                 .off1   = td_var_offset(percentile_list),
2437                 .help   = "Specify a custom list of percentiles to report",
2438                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
2439                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2440                 .minfp  = 0.0,
2441                 .maxfp  = 100.0,
2442         },
2443
2444 #ifdef FIO_HAVE_DISK_UTIL
2445         {
2446                 .name   = "disk_util",
2447                 .type   = FIO_OPT_BOOL,
2448                 .off1   = td_var_offset(do_disk_util),
2449                 .help   = "Log disk utilization statistics",
2450                 .def    = "1",
2451         },
2452 #endif
2453         {
2454                 .name   = "gtod_reduce",
2455                 .type   = FIO_OPT_BOOL,
2456                 .help   = "Greatly reduce number of gettimeofday() calls",
2457                 .cb     = str_gtod_reduce_cb,
2458                 .def    = "0",
2459         },
2460         {
2461                 .name   = "disable_lat",
2462                 .type   = FIO_OPT_BOOL,
2463                 .off1   = td_var_offset(disable_lat),
2464                 .help   = "Disable latency numbers",
2465                 .parent = "gtod_reduce",
2466                 .def    = "0",
2467         },
2468         {
2469                 .name   = "disable_clat",
2470                 .type   = FIO_OPT_BOOL,
2471                 .off1   = td_var_offset(disable_clat),
2472                 .help   = "Disable completion latency numbers",
2473                 .parent = "gtod_reduce",
2474                 .def    = "0",
2475         },
2476         {
2477                 .name   = "disable_slat",
2478                 .type   = FIO_OPT_BOOL,
2479                 .off1   = td_var_offset(disable_slat),
2480                 .help   = "Disable submission latency numbers",
2481                 .parent = "gtod_reduce",
2482                 .def    = "0",
2483         },
2484         {
2485                 .name   = "disable_bw_measurement",
2486                 .type   = FIO_OPT_BOOL,
2487                 .off1   = td_var_offset(disable_bw),
2488                 .help   = "Disable bandwidth logging",
2489                 .parent = "gtod_reduce",
2490                 .def    = "0",
2491         },
2492         {
2493                 .name   = "gtod_cpu",
2494                 .type   = FIO_OPT_INT,
2495                 .cb     = str_gtod_cpu_cb,
2496                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2497                 .verify = gtod_cpu_verify,
2498         },
2499         {
2500                 .name   = "unified_rw_reporting",
2501                 .type   = FIO_OPT_BOOL,
2502                 .off1   = td_var_offset(unified_rw_rep),
2503                 .help   = "Unify reporting across data direction",
2504                 .def    = "0",
2505         },
2506         {
2507                 .name   = "continue_on_error",
2508                 .type   = FIO_OPT_STR,
2509                 .off1   = td_var_offset(continue_on_error),
2510                 .help   = "Continue on non-fatal errors during IO",
2511                 .def    = "none",
2512                 .posval = {
2513                           { .ival = "none",
2514                             .oval = ERROR_TYPE_NONE,
2515                             .help = "Exit when an error is encountered",
2516                           },
2517                           { .ival = "read",
2518                             .oval = ERROR_TYPE_READ,
2519                             .help = "Continue on read errors only",
2520                           },
2521                           { .ival = "write",
2522                             .oval = ERROR_TYPE_WRITE,
2523                             .help = "Continue on write errors only",
2524                           },
2525                           { .ival = "io",
2526                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2527                             .help = "Continue on any IO errors",
2528                           },
2529                           { .ival = "verify",
2530                             .oval = ERROR_TYPE_VERIFY,
2531                             .help = "Continue on verify errors only",
2532                           },
2533                           { .ival = "all",
2534                             .oval = ERROR_TYPE_ANY,
2535                             .help = "Continue on all io and verify errors",
2536                           },
2537                           { .ival = "0",
2538                             .oval = ERROR_TYPE_NONE,
2539                             .help = "Alias for 'none'",
2540                           },
2541                           { .ival = "1",
2542                             .oval = ERROR_TYPE_ANY,
2543                             .help = "Alias for 'all'",
2544                           },
2545                 },
2546         },
2547         {
2548                 .name   = "ignore_error",
2549                 .type   = FIO_OPT_STR,
2550                 .cb     = str_ignore_error_cb,
2551                 .help   = "Set a specific list of errors to ignore",
2552                 .parent = "rw",
2553         },
2554         {
2555                 .name   = "error_dump",
2556                 .type   = FIO_OPT_BOOL,
2557                 .off1   = td_var_offset(error_dump),
2558                 .def    = "0",
2559                 .help   = "Dump info on each error",
2560         },
2561
2562         {
2563                 .name   = "profile",
2564                 .type   = FIO_OPT_STR_STORE,
2565                 .off1   = td_var_offset(profile),
2566                 .help   = "Select a specific builtin performance test",
2567         },
2568         {
2569                 .name   = "cgroup",
2570                 .type   = FIO_OPT_STR_STORE,
2571                 .off1   = td_var_offset(cgroup),
2572                 .help   = "Add job to cgroup of this name",
2573         },
2574         {
2575                 .name   = "cgroup_weight",
2576                 .type   = FIO_OPT_INT,
2577                 .off1   = td_var_offset(cgroup_weight),
2578                 .help   = "Use given weight for cgroup",
2579                 .minval = 100,
2580                 .maxval = 1000,
2581         },
2582         {
2583                 .name   = "cgroup_nodelete",
2584                 .type   = FIO_OPT_BOOL,
2585                 .off1   = td_var_offset(cgroup_nodelete),
2586                 .help   = "Do not delete cgroups after job completion",
2587                 .def    = "0",
2588         },
2589         {
2590                 .name   = "uid",
2591                 .type   = FIO_OPT_INT,
2592                 .off1   = td_var_offset(uid),
2593                 .help   = "Run job with this user ID",
2594         },
2595         {
2596                 .name   = "gid",
2597                 .type   = FIO_OPT_INT,
2598                 .off1   = td_var_offset(gid),
2599                 .help   = "Run job with this group ID",
2600         },
2601         {
2602                 .name   = "flow_id",
2603                 .type   = FIO_OPT_INT,
2604                 .off1   = td_var_offset(flow_id),
2605                 .help   = "The flow index ID to use",
2606                 .def    = "0",
2607         },
2608         {
2609                 .name   = "flow",
2610                 .type   = FIO_OPT_INT,
2611                 .off1   = td_var_offset(flow),
2612                 .help   = "Weight for flow control of this job",
2613                 .parent = "flow_id",
2614                 .def    = "0",
2615         },
2616         {
2617                 .name   = "flow_watermark",
2618                 .type   = FIO_OPT_INT,
2619                 .off1   = td_var_offset(flow_watermark),
2620                 .help   = "High watermark for flow control. This option"
2621                         " should be set to the same value for all threads"
2622                         " with non-zero flow.",
2623                 .parent = "flow_id",
2624                 .def    = "1024",
2625         },
2626         {
2627                 .name   = "flow_sleep",
2628                 .type   = FIO_OPT_INT,
2629                 .off1   = td_var_offset(flow_sleep),
2630                 .help   = "How many microseconds to sleep after being held"
2631                         " back by the flow control mechanism",
2632                 .parent = "flow_id",
2633                 .def    = "0",
2634         },
2635         {
2636                 .name = NULL,
2637         },
2638 };
2639
2640 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2641                         const char *name, int val)
2642 {
2643         lopt->name = (char *) name;
2644         lopt->val = val;
2645         if (o->type == FIO_OPT_STR_SET)
2646                 lopt->has_arg = no_argument;
2647         else
2648                 lopt->has_arg = required_argument;
2649 }
2650
2651 static void options_to_lopts(struct fio_option *opts,
2652                               struct option *long_options,
2653                               int i, int option_type)
2654 {
2655         struct fio_option *o = &opts[0];
2656         while (o->name) {
2657                 add_to_lopt(&long_options[i], o, o->name, option_type);
2658                 if (o->alias) {
2659                         i++;
2660                         add_to_lopt(&long_options[i], o, o->alias, option_type);
2661                 }
2662
2663                 i++;
2664                 o++;
2665                 assert(i < FIO_NR_OPTIONS);
2666         }
2667 }
2668
2669 void fio_options_set_ioengine_opts(struct option *long_options,
2670                                    struct thread_data *td)
2671 {
2672         unsigned int i;
2673
2674         i = 0;
2675         while (long_options[i].name) {
2676                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2677                         memset(&long_options[i], 0, sizeof(*long_options));
2678                         break;
2679                 }
2680                 i++;
2681         }
2682
2683         /*
2684          * Just clear out the prior ioengine options.
2685          */
2686         if (!td || !td->eo)
2687                 return;
2688
2689         options_to_lopts(td->io_ops->options, long_options, i,
2690                          FIO_GETOPT_IOENGINE);
2691 }
2692
2693 void fio_options_dup_and_init(struct option *long_options)
2694 {
2695         unsigned int i;
2696
2697         options_init(options);
2698
2699         i = 0;
2700         while (long_options[i].name)
2701                 i++;
2702
2703         options_to_lopts(options, long_options, i, FIO_GETOPT_JOB);
2704 }
2705
2706 struct fio_keyword {
2707         const char *word;
2708         const char *desc;
2709         char *replace;
2710 };
2711
2712 static struct fio_keyword fio_keywords[] = {
2713         {
2714                 .word   = "$pagesize",
2715                 .desc   = "Page size in the system",
2716         },
2717         {
2718                 .word   = "$mb_memory",
2719                 .desc   = "Megabytes of memory online",
2720         },
2721         {
2722                 .word   = "$ncpus",
2723                 .desc   = "Number of CPUs online in the system",
2724         },
2725         {
2726                 .word   = NULL,
2727         },
2728 };
2729
2730 void fio_keywords_init(void)
2731 {
2732         unsigned long long mb_memory;
2733         char buf[128];
2734         long l;
2735
2736         sprintf(buf, "%lu", (unsigned long) page_size);
2737         fio_keywords[0].replace = strdup(buf);
2738
2739         mb_memory = os_phys_mem() / (1024 * 1024);
2740         sprintf(buf, "%llu", mb_memory);
2741         fio_keywords[1].replace = strdup(buf);
2742
2743         l = cpus_online();
2744         sprintf(buf, "%lu", l);
2745         fio_keywords[2].replace = strdup(buf);
2746 }
2747
2748 #define BC_APP          "bc"
2749
2750 static char *bc_calc(char *str)
2751 {
2752         char buf[128], *tmp;
2753         FILE *f;
2754         int ret;
2755
2756         /*
2757          * No math, just return string
2758          */
2759         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2760              !strchr(str, '/')) || strchr(str, '\''))
2761                 return str;
2762
2763         /*
2764          * Split option from value, we only need to calculate the value
2765          */
2766         tmp = strchr(str, '=');
2767         if (!tmp)
2768                 return str;
2769
2770         tmp++;
2771
2772         /*
2773          * Prevent buffer overflows; such a case isn't reasonable anyway
2774          */
2775         if (strlen(str) >= 128 || strlen(tmp) > 100)
2776                 return str;
2777
2778         sprintf(buf, "which %s > /dev/null", BC_APP);
2779         if (system(buf)) {
2780                 log_err("fio: bc is needed for performing math\n");
2781                 return NULL;
2782         }
2783
2784         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2785         f = popen(buf, "r");
2786         if (!f) {
2787                 return NULL;
2788         }
2789
2790         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2791         if (ret <= 0) {
2792                 return NULL;
2793         }
2794
2795         pclose(f);
2796         buf[(tmp - str) + ret - 1] = '\0';
2797         memcpy(buf, str, tmp - str);
2798         free(str);
2799         return strdup(buf);
2800 }
2801
2802 /*
2803  * Return a copy of the input string with substrings of the form ${VARNAME}
2804  * substituted with the value of the environment variable VARNAME.  The
2805  * substitution always occurs, even if VARNAME is empty or the corresponding
2806  * environment variable undefined.
2807  */
2808 static char *option_dup_subs(const char *opt)
2809 {
2810         char out[OPT_LEN_MAX+1];
2811         char in[OPT_LEN_MAX+1];
2812         char *outptr = out;
2813         char *inptr = in;
2814         char *ch1, *ch2, *env;
2815         ssize_t nchr = OPT_LEN_MAX;
2816         size_t envlen;
2817
2818         if (strlen(opt) + 1 > OPT_LEN_MAX) {
2819                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2820                 return NULL;
2821         }
2822
2823         in[OPT_LEN_MAX] = '\0';
2824         strncpy(in, opt, OPT_LEN_MAX);
2825
2826         while (*inptr && nchr > 0) {
2827                 if (inptr[0] == '$' && inptr[1] == '{') {
2828                         ch2 = strchr(inptr, '}');
2829                         if (ch2 && inptr+1 < ch2) {
2830                                 ch1 = inptr+2;
2831                                 inptr = ch2+1;
2832                                 *ch2 = '\0';
2833
2834                                 env = getenv(ch1);
2835                                 if (env) {
2836                                         envlen = strlen(env);
2837                                         if (envlen <= nchr) {
2838                                                 memcpy(outptr, env, envlen);
2839                                                 outptr += envlen;
2840                                                 nchr -= envlen;
2841                                         }
2842                                 }
2843
2844                                 continue;
2845                         }
2846                 }
2847
2848                 *outptr++ = *inptr++;
2849                 --nchr;
2850         }
2851
2852         *outptr = '\0';
2853         return strdup(out);
2854 }
2855
2856 /*
2857  * Look for reserved variable names and replace them with real values
2858  */
2859 static char *fio_keyword_replace(char *opt)
2860 {
2861         char *s;
2862         int i;
2863         int docalc = 0;
2864
2865         for (i = 0; fio_keywords[i].word != NULL; i++) {
2866                 struct fio_keyword *kw = &fio_keywords[i];
2867
2868                 while ((s = strstr(opt, kw->word)) != NULL) {
2869                         char *new = malloc(strlen(opt) + 1);
2870                         char *o_org = opt;
2871                         int olen = s - opt;
2872                         int len;
2873
2874                         /*
2875                          * Copy part of the string before the keyword and
2876                          * sprintf() the replacement after it.
2877                          */
2878                         memcpy(new, opt, olen);
2879                         len = sprintf(new + olen, "%s", kw->replace);
2880
2881                         /*
2882                          * If there's more in the original string, copy that
2883                          * in too
2884                          */
2885                         opt += strlen(kw->word) + olen;
2886                         if (strlen(opt))
2887                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2888
2889                         /*
2890                          * replace opt and free the old opt
2891                          */
2892                         opt = new;
2893                         free(o_org);
2894
2895                         docalc = 1;
2896                 }
2897         }
2898
2899         /*
2900          * Check for potential math and invoke bc, if possible
2901          */
2902         if (docalc)
2903                 opt = bc_calc(opt);
2904
2905         return opt;
2906 }
2907
2908 static char **dup_and_sub_options(char **opts, int num_opts)
2909 {
2910         int i;
2911         char **opts_copy = malloc(num_opts * sizeof(*opts));
2912         for (i = 0; i < num_opts; i++) {
2913                 opts_copy[i] = option_dup_subs(opts[i]);
2914                 if (!opts_copy[i])
2915                         continue;
2916                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2917         }
2918         return opts_copy;
2919 }
2920
2921 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2922 {
2923         int i, ret, unknown;
2924         char **opts_copy;
2925
2926         sort_options(opts, options, num_opts);
2927         opts_copy = dup_and_sub_options(opts, num_opts);
2928
2929         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2930                 struct fio_option *o;
2931                 int newret = parse_option(opts_copy[i], opts[i], options, &o,
2932                                           td);
2933
2934                 if (opts_copy[i]) {
2935                         if (newret && !o) {
2936                                 unknown++;
2937                                 continue;
2938                         }
2939                         free(opts_copy[i]);
2940                         opts_copy[i] = NULL;
2941                 }
2942
2943                 ret |= newret;
2944         }
2945
2946         if (unknown) {
2947                 ret |= ioengine_load(td);
2948                 if (td->eo) {
2949                         sort_options(opts_copy, td->io_ops->options, num_opts);
2950                         opts = opts_copy;
2951                 }
2952                 for (i = 0; i < num_opts; i++) {
2953                         struct fio_option *o = NULL;
2954                         int newret = 1;
2955                         if (!opts_copy[i])
2956                                 continue;
2957
2958                         if (td->eo)
2959                                 newret = parse_option(opts_copy[i], opts[i],
2960                                                       td->io_ops->options, &o,
2961                                                       td->eo);
2962
2963                         ret |= newret;
2964                         if (!o)
2965                                 log_err("Bad option <%s>\n", opts[i]);
2966
2967                         free(opts_copy[i]);
2968                         opts_copy[i] = NULL;
2969                 }
2970         }
2971
2972         free(opts_copy);
2973         return ret;
2974 }
2975
2976 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2977 {
2978         return parse_cmd_option(opt, val, options, td);
2979 }
2980
2981 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
2982                                 char *val)
2983 {
2984         return parse_cmd_option(opt, val, td->io_ops->options, td);
2985 }
2986
2987 void fio_fill_default_options(struct thread_data *td)
2988 {
2989         fill_default_options(td, options);
2990 }
2991
2992 int fio_show_option_help(const char *opt)
2993 {
2994         return show_cmd_help(options, opt);
2995 }
2996
2997 void options_mem_dupe(void *data, struct fio_option *options)
2998 {
2999         struct fio_option *o;
3000         char **ptr;
3001
3002         for (o = &options[0]; o->name; o++) {
3003                 if (o->type != FIO_OPT_STR_STORE)
3004                         continue;
3005
3006                 ptr = td_var(data, o->off1);
3007                 if (*ptr)
3008                         *ptr = strdup(*ptr);
3009         }
3010 }
3011
3012 /*
3013  * dupe FIO_OPT_STR_STORE options
3014  */
3015 void fio_options_mem_dupe(struct thread_data *td)
3016 {
3017         options_mem_dupe(&td->o, options);
3018
3019         if (td->eo && td->io_ops) {
3020                 void *oldeo = td->eo;
3021
3022                 td->eo = malloc(td->io_ops->option_struct_size);
3023                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
3024                 options_mem_dupe(td->eo, td->io_ops->options);
3025         }
3026 }
3027
3028 unsigned int fio_get_kb_base(void *data)
3029 {
3030         struct thread_data *td = data;
3031         unsigned int kb_base = 0;
3032
3033         if (td)
3034                 kb_base = td->o.kb_base;
3035         if (!kb_base)
3036                 kb_base = 1024;
3037
3038         return kb_base;
3039 }
3040
3041 int add_option(struct fio_option *o)
3042 {
3043         struct fio_option *__o;
3044         int opt_index = 0;
3045
3046         __o = options;
3047         while (__o->name) {
3048                 opt_index++;
3049                 __o++;
3050         }
3051
3052         memcpy(&options[opt_index], o, sizeof(*o));
3053         return 0;
3054 }
3055
3056 void invalidate_profile_options(const char *prof_name)
3057 {
3058         struct fio_option *o;
3059
3060         o = options;
3061         while (o->name) {
3062                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
3063                         o->type = FIO_OPT_INVALID;
3064                         o->prof_name = NULL;
3065                 }
3066                 o++;
3067         }
3068 }
3069
3070 void add_opt_posval(const char *optname, const char *ival, const char *help)
3071 {
3072         struct fio_option *o;
3073         unsigned int i;
3074
3075         o = find_option(options, optname);
3076         if (!o)
3077                 return;
3078
3079         for (i = 0; i < PARSE_MAX_VP; i++) {
3080                 if (o->posval[i].ival)
3081                         continue;
3082
3083                 o->posval[i].ival = ival;
3084                 o->posval[i].help = help;
3085                 break;
3086         }
3087 }
3088
3089 void del_opt_posval(const char *optname, const char *ival)
3090 {
3091         struct fio_option *o;
3092         unsigned int i;
3093
3094         o = find_option(options, optname);
3095         if (!o)
3096                 return;
3097
3098         for (i = 0; i < PARSE_MAX_VP; i++) {
3099                 if (!o->posval[i].ival)
3100                         continue;
3101                 if (strcmp(o->posval[i].ival, ival))
3102                         continue;
3103
3104                 o->posval[i].ival = NULL;
3105                 o->posval[i].help = NULL;
3106         }
3107 }
3108
3109 void fio_options_free(struct thread_data *td)
3110 {
3111         options_free(options, td);
3112         if (td->eo && td->io_ops && td->io_ops->options) {
3113                 options_free(td->io_ops->options, td->eo);
3114                 free(td->eo);
3115                 td->eo = NULL;
3116         }
3117 }