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_write_bw_log_cb(void *data, const char *str)
 990 {
 991         struct thread_data *td = data;
 992
 993         if (str)
 994                 td->o.bw_log_file = strdup(str);
 995
 996         td->o.write_bw_log = 1;
 997         return 0;
 998 }
 999
1000 static int str_write_lat_log_cb(void *data, const char *str)
1001 {
1002         struct thread_data *td = data;
1003
1004         if (str)
1005                 td->o.lat_log_file = strdup(str);
1006
1007         td->o.write_lat_log = 1;
1008         return 0;
1009 }
1010
1011 static int str_write_iops_log_cb(void *data, const char *str)
1012 {
1013         struct thread_data *td = data;
1014
1015         if (str)
1016                 td->o.iops_log_file = strdup(str);
1017
1018         td->o.write_iops_log = 1;
1019         return 0;
1020 }
1021
1022 static int str_gtod_reduce_cb(void *data, int *il)
1023 {
1024         struct thread_data *td = data;
1025         int val = *il;
1026
1027         td->o.disable_lat = !!val;
1028         td->o.disable_clat = !!val;
1029         td->o.disable_slat = !!val;
1030         td->o.disable_bw = !!val;
1031         td->o.clat_percentiles = !val;
1032         if (val)
1033                 td->tv_cache_mask = 63;
1034
1035         return 0;
1036 }
1037
1038 static int str_gtod_cpu_cb(void *data, long long *il)
1039 {
1040         struct thread_data *td = data;
1041         int val = *il;
1042
1043         td->o.gtod_cpu = val;
1044         td->o.gtod_offload = 1;
1045         return 0;
1046 }
1047
1048 static int str_size_cb(void *data, unsigned long long *__val)
1049 {
1050         struct thread_data *td = data;
1051         unsigned long long v = *__val;
1052
1053         if (parse_is_percent(v)) {
1054                 td->o.size = 0;
1055                 td->o.size_percent = -1ULL - v;
1056         } else
1057                 td->o.size = v;
1058
1059         return 0;
1060 }
1061
1062 static int rw_verify(struct fio_option *o, void *data)
1063 {
1064         struct thread_data *td = data;
1065
1066         if (read_only && td_write(td)) {
1067                 log_err("fio: job <%s> has write bit set, but fio is in"
1068                         " read-only mode\n", td->o.name);
1069                 return 1;
1070         }
1071
1072         return 0;
1073 }
1074
1075 static int gtod_cpu_verify(struct fio_option *o, void *data)
1076 {
1077 #ifndef FIO_HAVE_CPU_AFFINITY
1078         struct thread_data *td = data;
1079
1080         if (td->o.gtod_cpu) {
1081                 log_err("fio: platform must support CPU affinity for"
1082                         "gettimeofday() offloading\n");
1083                 return 1;
1084         }
1085 #endif
1086
1087         return 0;
1088 }
1089
1090 static int kb_base_verify(struct fio_option *o, void *data)
1091 {
1092         struct thread_data *td = data;
1093
1094         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
1095                 log_err("fio: kb_base set to nonsensical value: %u\n",
1096                                 td->o.kb_base);
1097                 return 1;
1098         }
1099
1100         return 0;
1101 }
1102
1103 static int unit_base_verify(struct fio_option *o, void *data)
1104 {
1105         struct thread_data *td = data;
1106
1107         /* 0 = default, pick based on engine
1108          * 1 = use bits
1109          * 8 = use bytes
1110          */
1111         if (td->o.unit_base != 0 &&
1112                 td->o.unit_base != 1 &&
1113                 td->o.unit_base != 8) {
1114                 log_err("fio: unit_base set to nonsensical value: %u\n",
1115                                 td->o.unit_base);
1116                 return 1;
1117         }
1118
1119         return 0;
1120 }
1121
1122 /*
1123  * Map of job/command line options
1124  */
1125 static struct fio_option options[FIO_MAX_OPTS] = {
1126         {
1127                 .name   = "description",
1128                 .type   = FIO_OPT_STR_STORE,
1129                 .off1   = td_var_offset(description),
1130                 .help   = "Text job description",
1131         },
1132         {
1133                 .name   = "name",
1134                 .type   = FIO_OPT_STR_STORE,
1135                 .off1   = td_var_offset(name),
1136                 .help   = "Name of this job",
1137         },
1138         {
1139                 .name   = "directory",
1140                 .type   = FIO_OPT_STR_STORE,
1141                 .off1   = td_var_offset(directory),
1142                 .cb     = str_directory_cb,
1143                 .help   = "Directory to store files in",
1144         },
1145         {
1146                 .name   = "filename",
1147                 .type   = FIO_OPT_STR_STORE,
1148                 .off1   = td_var_offset(filename),
1149                 .cb     = str_filename_cb,
1150                 .prio   = -1, /* must come after "directory" */
1151                 .help   = "File(s) to use for the workload",
1152         },
1153         {
1154                 .name   = "filename_format",
1155                 .type   = FIO_OPT_STR_STORE,
1156                 .off1   = td_var_offset(filename_format),
1157                 .prio   = -1, /* must come after "directory" */
1158                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1159                 .def    = "$jobname.$jobnum.$filenum",
1160         },
1161         {
1162                 .name   = "kb_base",
1163                 .type   = FIO_OPT_INT,
1164                 .off1   = td_var_offset(kb_base),
1165                 .verify = kb_base_verify,
1166                 .prio   = 1,
1167                 .def    = "1024",
1168                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
1169         },
1170         {
1171                 .name   = "unit_base",
1172                 .type   = FIO_OPT_INT,
1173                 .off1   = td_var_offset(unit_base),
1174                 .verify = unit_base_verify,
1175                 .prio   = 1,
1176                 .def    = "0",
1177                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
1178         },
1179         {
1180                 .name   = "lockfile",
1181                 .type   = FIO_OPT_STR,
1182                 .off1   = td_var_offset(file_lock_mode),
1183                 .help   = "Lock file when doing IO to it",
1184                 .parent = "filename",
1185                 .def    = "none",
1186                 .posval = {
1187                           { .ival = "none",
1188                             .oval = FILE_LOCK_NONE,
1189                             .help = "No file locking",
1190                           },
1191                           { .ival = "exclusive",
1192                             .oval = FILE_LOCK_EXCLUSIVE,
1193                             .help = "Exclusive file lock",
1194                           },
1195                           {
1196                             .ival = "readwrite",
1197                             .oval = FILE_LOCK_READWRITE,
1198                             .help = "Read vs write lock",
1199                           },
1200                 },
1201         },
1202         {
1203                 .name   = "opendir",
1204                 .type   = FIO_OPT_STR_STORE,
1205                 .off1   = td_var_offset(opendir),
1206                 .cb     = str_opendir_cb,
1207                 .help   = "Recursively add files from this directory and down",
1208         },
1209         {
1210                 .name   = "rw",
1211                 .alias  = "readwrite",
1212                 .type   = FIO_OPT_STR,
1213                 .cb     = str_rw_cb,
1214                 .off1   = td_var_offset(td_ddir),
1215                 .help   = "IO direction",
1216                 .def    = "read",
1217                 .verify = rw_verify,
1218                 .posval = {
1219                           { .ival = "read",
1220                             .oval = TD_DDIR_READ,
1221                             .help = "Sequential read",
1222                           },
1223                           { .ival = "write",
1224                             .oval = TD_DDIR_WRITE,
1225                             .help = "Sequential write",
1226                           },
1227                           { .ival = "trim",
1228                             .oval = TD_DDIR_TRIM,
1229                             .help = "Sequential trim",
1230                           },
1231                           { .ival = "randread",
1232                             .oval = TD_DDIR_RANDREAD,
1233                             .help = "Random read",
1234                           },
1235                           { .ival = "randwrite",
1236                             .oval = TD_DDIR_RANDWRITE,
1237                             .help = "Random write",
1238                           },
1239                           { .ival = "randtrim",
1240                             .oval = TD_DDIR_RANDTRIM,
1241                             .help = "Random trim",
1242                           },
1243                           { .ival = "rw",
1244                             .oval = TD_DDIR_RW,
1245                             .help = "Sequential read and write mix",
1246                           },
1247                           { .ival = "readwrite",
1248                             .oval = TD_DDIR_RW,
1249                             .help = "Sequential read and write mix",
1250                           },
1251                           { .ival = "randrw",
1252                             .oval = TD_DDIR_RANDRW,
1253                             .help = "Random read and write mix"
1254                           },
1255                 },
1256         },
1257         {
1258                 .name   = "rw_sequencer",
1259                 .type   = FIO_OPT_STR,
1260                 .off1   = td_var_offset(rw_seq),
1261                 .help   = "IO offset generator modifier",
1262                 .def    = "sequential",
1263                 .posval = {
1264                           { .ival = "sequential",
1265                             .oval = RW_SEQ_SEQ,
1266                             .help = "Generate sequential offsets",
1267                           },
1268                           { .ival = "identical",
1269                             .oval = RW_SEQ_IDENT,
1270                             .help = "Generate identical offsets",
1271                           },
1272                 },
1273         },
1274
1275         {
1276                 .name   = "ioengine",
1277                 .type   = FIO_OPT_STR_STORE,
1278                 .off1   = td_var_offset(ioengine),
1279                 .help   = "IO engine to use",
1280                 .def    = FIO_PREFERRED_ENGINE,
1281                 .posval = {
1282                           { .ival = "sync",
1283                             .help = "Use read/write",
1284                           },
1285                           { .ival = "psync",
1286                             .help = "Use pread/pwrite",
1287                           },
1288                           { .ival = "vsync",
1289                             .help = "Use readv/writev",
1290                           },
1291 #ifdef CONFIG_LIBAIO
1292                           { .ival = "libaio",
1293                             .help = "Linux native asynchronous IO",
1294                           },
1295 #endif
1296 #ifdef CONFIG_POSIXAIO
1297                           { .ival = "posixaio",
1298                             .help = "POSIX asynchronous IO",
1299                           },
1300 #endif
1301 #ifdef CONFIG_SOLARISAIO
1302                           { .ival = "solarisaio",
1303                             .help = "Solaris native asynchronous IO",
1304                           },
1305 #endif
1306 #ifdef CONFIG_WINDOWSAIO
1307                           { .ival = "windowsaio",
1308                             .help = "Windows native asynchronous IO"
1309                           },
1310 #endif
1311                           { .ival = "mmap",
1312                             .help = "Memory mapped IO"
1313                           },
1314 #ifdef CONFIG_LINUX_SPLICE
1315                           { .ival = "splice",
1316                             .help = "splice/vmsplice based IO",
1317                           },
1318                           { .ival = "netsplice",
1319                             .help = "splice/vmsplice to/from the network",
1320                           },
1321 #endif
1322 #ifdef FIO_HAVE_SGIO
1323                           { .ival = "sg",
1324                             .help = "SCSI generic v3 IO",
1325                           },
1326 #endif
1327                           { .ival = "null",
1328                             .help = "Testing engine (no data transfer)",
1329                           },
1330                           { .ival = "net",
1331                             .help = "Network IO",
1332                           },
1333                           { .ival = "cpuio",
1334                             .help = "CPU cycle burner engine",
1335                           },
1336 #ifdef CONFIG_GUASI
1337                           { .ival = "guasi",
1338                             .help = "GUASI IO engine",
1339                           },
1340 #endif
1341 #ifdef FIO_HAVE_BINJECT
1342                           { .ival = "binject",
1343                             .help = "binject direct inject block engine",
1344                           },
1345 #endif
1346 #ifdef CONFIG_RDMA
1347                           { .ival = "rdma",
1348                             .help = "RDMA IO engine",
1349                           },
1350 #endif
1351 #ifdef CONFIG_FUSION_AW
1352                           { .ival = "fusion-aw-sync",
1353                             .help = "Fusion-io atomic write engine",
1354                           },
1355 #endif
1356 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1357                           { .ival = "e4defrag",
1358                             .help = "ext4 defrag engine",
1359                           },
1360 #endif
1361 #ifdef CONFIG_LINUX_FALLOCATE
1362                           { .ival = "falloc",
1363                             .help = "fallocate() file based engine",
1364                           },
1365 #endif
1366                           { .ival = "external",
1367                             .help = "Load external engine (append name)",
1368                           },
1369                 },
1370         },
1371         {
1372                 .name   = "iodepth",
1373                 .type   = FIO_OPT_INT,
1374                 .off1   = td_var_offset(iodepth),
1375                 .help   = "Number of IO buffers to keep in flight",
1376                 .minval = 1,
1377                 .def    = "1",
1378         },
1379         {
1380                 .name   = "iodepth_batch",
1381                 .alias  = "iodepth_batch_submit",
1382                 .type   = FIO_OPT_INT,
1383                 .off1   = td_var_offset(iodepth_batch),
1384                 .help   = "Number of IO buffers to submit in one go",
1385                 .parent = "iodepth",
1386                 .minval = 1,
1387                 .def    = "1",
1388         },
1389         {
1390                 .name   = "iodepth_batch_complete",
1391                 .type   = FIO_OPT_INT,
1392                 .off1   = td_var_offset(iodepth_batch_complete),
1393                 .help   = "Number of IO buffers to retrieve in one go",
1394                 .parent = "iodepth",
1395                 .minval = 0,
1396                 .def    = "1",
1397         },
1398         {
1399                 .name   = "iodepth_low",
1400                 .type   = FIO_OPT_INT,
1401                 .off1   = td_var_offset(iodepth_low),
1402                 .help   = "Low water mark for queuing depth",
1403                 .parent = "iodepth",
1404         },
1405         {
1406                 .name   = "size",
1407                 .type   = FIO_OPT_STR_VAL,
1408                 .cb     = str_size_cb,
1409                 .help   = "Total size of device or files",
1410         },
1411         {
1412                 .name   = "fill_device",
1413                 .alias  = "fill_fs",
1414                 .type   = FIO_OPT_BOOL,
1415                 .off1   = td_var_offset(fill_device),
1416                 .help   = "Write until an ENOSPC error occurs",
1417                 .def    = "0",
1418         },
1419         {
1420                 .name   = "filesize",
1421                 .type   = FIO_OPT_STR_VAL,
1422                 .off1   = td_var_offset(file_size_low),
1423                 .off2   = td_var_offset(file_size_high),
1424                 .minval = 1,
1425                 .help   = "Size of individual files",
1426         },
1427         {
1428                 .name   = "offset",
1429                 .alias  = "fileoffset",
1430                 .type   = FIO_OPT_STR_VAL,
1431                 .off1   = td_var_offset(start_offset),
1432                 .help   = "Start IO from this offset",
1433                 .def    = "0",
1434         },
1435         {
1436                 .name   = "offset_increment",
1437                 .type   = FIO_OPT_STR_VAL,
1438                 .off1   = td_var_offset(offset_increment),
1439                 .help   = "What is the increment from one offset to the next",
1440                 .parent = "offset",
1441                 .def    = "0",
1442         },
1443         {
1444                 .name   = "bs",
1445                 .alias  = "blocksize",
1446                 .type   = FIO_OPT_INT,
1447                 .off1   = td_var_offset(bs[DDIR_READ]),
1448                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1449                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1450                 .minval = 1,
1451                 .help   = "Block size unit",
1452                 .def    = "4k",
1453                 .parent = "rw",
1454         },
1455         {
1456                 .name   = "ba",
1457                 .alias  = "blockalign",
1458                 .type   = FIO_OPT_INT,
1459                 .off1   = td_var_offset(ba[DDIR_READ]),
1460                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1461                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1462                 .minval = 1,
1463                 .help   = "IO block offset alignment",
1464                 .parent = "rw",
1465         },
1466         {
1467                 .name   = "bsrange",
1468                 .alias  = "blocksize_range",
1469                 .type   = FIO_OPT_RANGE,
1470                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1471                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1472                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1473                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1474                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1475                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1476                 .minval = 1,
1477                 .help   = "Set block size range (in more detail than bs)",
1478                 .parent = "rw",
1479         },
1480         {
1481                 .name   = "bssplit",
1482                 .type   = FIO_OPT_STR,
1483                 .cb     = str_bssplit_cb,
1484                 .help   = "Set a specific mix of block sizes",
1485                 .parent = "rw",
1486         },
1487         {
1488                 .name   = "bs_unaligned",
1489                 .alias  = "blocksize_unaligned",
1490                 .type   = FIO_OPT_STR_SET,
1491                 .off1   = td_var_offset(bs_unaligned),
1492                 .help   = "Don't sector align IO buffer sizes",
1493                 .parent = "rw",
1494         },
1495         {
1496                 .name   = "randrepeat",
1497                 .type   = FIO_OPT_BOOL,
1498                 .off1   = td_var_offset(rand_repeatable),
1499                 .help   = "Use repeatable random IO pattern",
1500                 .def    = "1",
1501                 .parent = "rw",
1502         },
1503         {
1504                 .name   = "use_os_rand",
1505                 .type   = FIO_OPT_BOOL,
1506                 .off1   = td_var_offset(use_os_rand),
1507                 .help   = "Set to use OS random generator",
1508                 .def    = "0",
1509                 .parent = "rw",
1510         },
1511         {
1512                 .name   = "norandommap",
1513                 .type   = FIO_OPT_STR_SET,
1514                 .off1   = td_var_offset(norandommap),
1515                 .help   = "Accept potential duplicate random blocks",
1516                 .parent = "rw",
1517         },
1518         {
1519                 .name   = "softrandommap",
1520                 .type   = FIO_OPT_BOOL,
1521                 .off1   = td_var_offset(softrandommap),
1522                 .help   = "Set norandommap if randommap allocation fails",
1523                 .parent = "norandommap",
1524                 .def    = "0",
1525         },
1526         {
1527                 .name   = "random_generator",
1528                 .type   = FIO_OPT_STR,
1529                 .off1   = td_var_offset(random_generator),
1530                 .help   = "Type of random number generator to use",
1531                 .def    = "tausworthe",
1532                 .posval = {
1533                           { .ival = "tausworthe",
1534                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1535                             .help = "Strong Tausworthe generator",
1536                           },
1537                           { .ival = "lfsr",
1538                             .oval = FIO_RAND_GEN_LFSR,
1539                             .help = "Variable length LFSR",
1540                           },
1541                 },
1542         },
1543         {
1544                 .name   = "random_distribution",
1545                 .type   = FIO_OPT_STR,
1546                 .off1   = td_var_offset(random_distribution),
1547                 .cb     = str_random_distribution_cb,
1548                 .help   = "Random offset distribution generator",
1549                 .def    = "random",
1550                 .posval = {
1551                           { .ival = "random",
1552                             .oval = FIO_RAND_DIST_RANDOM,
1553                             .help = "Completely random",
1554                           },
1555                           { .ival = "zipf",
1556                             .oval = FIO_RAND_DIST_ZIPF,
1557                             .help = "Zipf distribution",
1558                           },
1559                           { .ival = "pareto",
1560                             .oval = FIO_RAND_DIST_PARETO,
1561                             .help = "Pareto distribution",
1562                           },
1563                 },
1564         },
1565         {
1566                 .name   = "nrfiles",
1567                 .alias  = "nr_files",
1568                 .type   = FIO_OPT_INT,
1569                 .off1   = td_var_offset(nr_files),
1570                 .help   = "Split job workload between this number of files",
1571                 .def    = "1",
1572         },
1573         {
1574                 .name   = "openfiles",
1575                 .type   = FIO_OPT_INT,
1576                 .off1   = td_var_offset(open_files),
1577                 .help   = "Number of files to keep open at the same time",
1578         },
1579         {
1580                 .name   = "file_service_type",
1581                 .type   = FIO_OPT_STR,
1582                 .cb     = str_fst_cb,
1583                 .off1   = td_var_offset(file_service_type),
1584                 .help   = "How to select which file to service next",
1585                 .def    = "roundrobin",
1586                 .posval = {
1587                           { .ival = "random",
1588                             .oval = FIO_FSERVICE_RANDOM,
1589                             .help = "Choose a file at random",
1590                           },
1591                           { .ival = "roundrobin",
1592                             .oval = FIO_FSERVICE_RR,
1593                             .help = "Round robin select files",
1594                           },
1595                           { .ival = "sequential",
1596                             .oval = FIO_FSERVICE_SEQ,
1597                             .help = "Finish one file before moving to the next",
1598                           },
1599                 },
1600                 .parent = "nrfiles",
1601         },
1602 #ifdef CONFIG_POSIX_FALLOCATE
1603         {
1604                 .name   = "fallocate",
1605                 .type   = FIO_OPT_STR,
1606                 .off1   = td_var_offset(fallocate_mode),
1607                 .help   = "Whether pre-allocation is performed when laying out files",
1608                 .def    = "posix",
1609                 .posval = {
1610                           { .ival = "none",
1611                             .oval = FIO_FALLOCATE_NONE,
1612                             .help = "Do not pre-allocate space",
1613                           },
1614                           { .ival = "posix",
1615                             .oval = FIO_FALLOCATE_POSIX,
1616                             .help = "Use posix_fallocate()",
1617                           },
1618 #ifdef CONFIG_LINUX_FALLOCATE
1619                           { .ival = "keep",
1620                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1621                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1622                           },
1623 #endif
1624                           /* Compatibility with former boolean values */
1625                           { .ival = "0",
1626                             .oval = FIO_FALLOCATE_NONE,
1627                             .help = "Alias for 'none'",
1628                           },
1629                           { .ival = "1",
1630                             .oval = FIO_FALLOCATE_POSIX,
1631                             .help = "Alias for 'posix'",
1632                           },
1633                 },
1634         },
1635 #endif  /* CONFIG_POSIX_FALLOCATE */
1636         {
1637                 .name   = "fadvise_hint",
1638                 .type   = FIO_OPT_BOOL,
1639                 .off1   = td_var_offset(fadvise_hint),
1640                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1641                 .def    = "1",
1642         },
1643         {
1644                 .name   = "fsync",
1645                 .type   = FIO_OPT_INT,
1646                 .off1   = td_var_offset(fsync_blocks),
1647                 .help   = "Issue fsync for writes every given number of blocks",
1648                 .def    = "0",
1649         },
1650         {
1651                 .name   = "fdatasync",
1652                 .type   = FIO_OPT_INT,
1653                 .off1   = td_var_offset(fdatasync_blocks),
1654                 .help   = "Issue fdatasync for writes every given number of blocks",
1655                 .def    = "0",
1656         },
1657         {
1658                 .name   = "write_barrier",
1659                 .type   = FIO_OPT_INT,
1660                 .off1   = td_var_offset(barrier_blocks),
1661                 .help   = "Make every Nth write a barrier write",
1662                 .def    = "0",
1663         },
1664 #ifdef CONFIG_SYNC_FILE_RANGE
1665         {
1666                 .name   = "sync_file_range",
1667                 .posval = {
1668                           { .ival = "wait_before",
1669                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1670                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1671                             .or   = 1,
1672                           },
1673                           { .ival = "write",
1674                             .oval = SYNC_FILE_RANGE_WRITE,
1675                             .help = "SYNC_FILE_RANGE_WRITE",
1676                             .or   = 1,
1677                           },
1678                           {
1679                             .ival = "wait_after",
1680                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1681                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1682                             .or   = 1,
1683                           },
1684                 },
1685                 .type   = FIO_OPT_STR_MULTI,
1686                 .cb     = str_sfr_cb,
1687                 .off1   = td_var_offset(sync_file_range),
1688                 .help   = "Use sync_file_range()",
1689         },
1690 #endif
1691         {
1692                 .name   = "direct",
1693                 .type   = FIO_OPT_BOOL,
1694                 .off1   = td_var_offset(odirect),
1695                 .help   = "Use O_DIRECT IO (negates buffered)",
1696                 .def    = "0",
1697         },
1698         {
1699                 .name   = "buffered",
1700                 .type   = FIO_OPT_BOOL,
1701                 .off1   = td_var_offset(odirect),
1702                 .neg    = 1,
1703                 .help   = "Use buffered IO (negates direct)",
1704                 .def    = "1",
1705         },
1706         {
1707                 .name   = "overwrite",
1708                 .type   = FIO_OPT_BOOL,
1709                 .off1   = td_var_offset(overwrite),
1710                 .help   = "When writing, set whether to overwrite current data",
1711                 .def    = "0",
1712         },
1713         {
1714                 .name   = "loops",
1715                 .type   = FIO_OPT_INT,
1716                 .off1   = td_var_offset(loops),
1717                 .help   = "Number of times to run the job",
1718                 .def    = "1",
1719         },
1720         {
1721                 .name   = "numjobs",
1722                 .type   = FIO_OPT_INT,
1723                 .off1   = td_var_offset(numjobs),
1724                 .help   = "Duplicate this job this many times",
1725                 .def    = "1",
1726         },
1727         {
1728                 .name   = "startdelay",
1729                 .type   = FIO_OPT_STR_VAL_TIME,
1730                 .off1   = td_var_offset(start_delay),
1731                 .help   = "Only start job when this period has passed",
1732                 .def    = "0",
1733         },
1734         {
1735                 .name   = "runtime",
1736                 .alias  = "timeout",
1737                 .type   = FIO_OPT_STR_VAL_TIME,
1738                 .off1   = td_var_offset(timeout),
1739                 .help   = "Stop workload when this amount of time has passed",
1740                 .def    = "0",
1741         },
1742         {
1743                 .name   = "time_based",
1744                 .type   = FIO_OPT_STR_SET,
1745                 .off1   = td_var_offset(time_based),
1746                 .help   = "Keep running until runtime/timeout is met",
1747         },
1748         {
1749                 .name   = "ramp_time",
1750                 .type   = FIO_OPT_STR_VAL_TIME,
1751                 .off1   = td_var_offset(ramp_time),
1752                 .help   = "Ramp up time before measuring performance",
1753         },
1754         {
1755                 .name   = "clocksource",
1756                 .type   = FIO_OPT_STR,
1757                 .cb     = fio_clock_source_cb,
1758                 .off1   = td_var_offset(clocksource),
1759                 .help   = "What type of timing source to use",
1760                 .posval = {
1761 #ifdef CONFIG_GETTIMEOFDAY
1762                           { .ival = "gettimeofday",
1763                             .oval = CS_GTOD,
1764                             .help = "Use gettimeofday(2) for timing",
1765                           },
1766 #endif
1767 #ifdef CONFIG_CLOCK_GETTIME
1768                           { .ival = "clock_gettime",
1769                             .oval = CS_CGETTIME,
1770                             .help = "Use clock_gettime(2) for timing",
1771                           },
1772 #endif
1773 #ifdef ARCH_HAVE_CPU_CLOCK
1774                           { .ival = "cpu",
1775                             .oval = CS_CPUCLOCK,
1776                             .help = "Use CPU private clock",
1777                           },
1778 #endif
1779                 },
1780         },
1781         {
1782                 .name   = "mem",
1783                 .alias  = "iomem",
1784                 .type   = FIO_OPT_STR,
1785                 .cb     = str_mem_cb,
1786                 .off1   = td_var_offset(mem_type),
1787                 .help   = "Backing type for IO buffers",
1788                 .def    = "malloc",
1789                 .posval = {
1790                           { .ival = "malloc",
1791                             .oval = MEM_MALLOC,
1792                             .help = "Use malloc(3) for IO buffers",
1793                           },
1794                           { .ival = "shm",
1795                             .oval = MEM_SHM,
1796                             .help = "Use shared memory segments for IO buffers",
1797                           },
1798 #ifdef FIO_HAVE_HUGETLB
1799                           { .ival = "shmhuge",
1800                             .oval = MEM_SHMHUGE,
1801                             .help = "Like shm, but use huge pages",
1802                           },
1803 #endif
1804                           { .ival = "mmap",
1805                             .oval = MEM_MMAP,
1806                             .help = "Use mmap(2) (file or anon) for IO buffers",
1807                           },
1808 #ifdef FIO_HAVE_HUGETLB
1809                           { .ival = "mmaphuge",
1810                             .oval = MEM_MMAPHUGE,
1811                             .help = "Like mmap, but use huge pages",
1812                           },
1813 #endif
1814                   },
1815         },
1816         {
1817                 .name   = "iomem_align",
1818                 .alias  = "mem_align",
1819                 .type   = FIO_OPT_INT,
1820                 .off1   = td_var_offset(mem_align),
1821                 .minval = 0,
1822                 .help   = "IO memory buffer offset alignment",
1823                 .def    = "0",
1824                 .parent = "iomem",
1825         },
1826         {
1827                 .name   = "verify",
1828                 .type   = FIO_OPT_STR,
1829                 .off1   = td_var_offset(verify),
1830                 .help   = "Verify data written",
1831                 .cb     = str_verify_cb,
1832                 .def    = "0",
1833                 .posval = {
1834                           { .ival = "0",
1835                             .oval = VERIFY_NONE,
1836                             .help = "Don't do IO verification",
1837                           },
1838                           { .ival = "md5",
1839                             .oval = VERIFY_MD5,
1840                             .help = "Use md5 checksums for verification",
1841                           },
1842                           { .ival = "crc64",
1843                             .oval = VERIFY_CRC64,
1844                             .help = "Use crc64 checksums for verification",
1845                           },
1846                           { .ival = "crc32",
1847                             .oval = VERIFY_CRC32,
1848                             .help = "Use crc32 checksums for verification",
1849                           },
1850                           { .ival = "crc32c-intel",
1851                             .oval = VERIFY_CRC32C,
1852                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1853                           },
1854                           { .ival = "crc32c",
1855                             .oval = VERIFY_CRC32C,
1856                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1857                           },
1858                           { .ival = "crc16",
1859                             .oval = VERIFY_CRC16,
1860                             .help = "Use crc16 checksums for verification",
1861                           },
1862                           { .ival = "crc7",
1863                             .oval = VERIFY_CRC7,
1864                             .help = "Use crc7 checksums for verification",
1865                           },
1866                           { .ival = "sha1",
1867                             .oval = VERIFY_SHA1,
1868                             .help = "Use sha1 checksums for verification",
1869                           },
1870                           { .ival = "sha256",
1871                             .oval = VERIFY_SHA256,
1872                             .help = "Use sha256 checksums for verification",
1873                           },
1874                           { .ival = "sha512",
1875                             .oval = VERIFY_SHA512,
1876                             .help = "Use sha512 checksums for verification",
1877                           },
1878                           { .ival = "meta",
1879                             .oval = VERIFY_META,
1880                             .help = "Use io information",
1881                           },
1882                           {
1883                             .ival = "null",
1884                             .oval = VERIFY_NULL,
1885                             .help = "Pretend to verify",
1886                           },
1887                 },
1888         },
1889         {
1890                 .name   = "do_verify",
1891                 .type   = FIO_OPT_BOOL,
1892                 .off1   = td_var_offset(do_verify),
1893                 .help   = "Run verification stage after write",
1894                 .def    = "1",
1895                 .parent = "verify",
1896         },
1897         {
1898                 .name   = "verifysort",
1899                 .type   = FIO_OPT_BOOL,
1900                 .off1   = td_var_offset(verifysort),
1901                 .help   = "Sort written verify blocks for read back",
1902                 .def    = "1",
1903                 .parent = "verify",
1904         },
1905         {
1906                 .name   = "verifysort_nr",
1907                 .type   = FIO_OPT_INT,
1908                 .off1   = td_var_offset(verifysort_nr),
1909                 .help   = "Pre-load and sort verify blocks for a read workload",
1910                 .minval = 0,
1911                 .maxval = 131072,
1912                 .def    = "1024",
1913                 .parent = "verify",
1914         },
1915         {
1916                 .name   = "verify_interval",
1917                 .type   = FIO_OPT_INT,
1918                 .off1   = td_var_offset(verify_interval),
1919                 .minval = 2 * sizeof(struct verify_header),
1920                 .help   = "Store verify buffer header every N bytes",
1921                 .parent = "verify",
1922         },
1923         {
1924                 .name   = "verify_offset",
1925                 .type   = FIO_OPT_INT,
1926                 .help   = "Offset verify header location by N bytes",
1927                 .def    = "0",
1928                 .cb     = str_verify_offset_cb,
1929                 .parent = "verify",
1930         },
1931         {
1932                 .name   = "verify_pattern",
1933                 .type   = FIO_OPT_STR,
1934                 .cb     = str_verify_pattern_cb,
1935                 .help   = "Fill pattern for IO buffers",
1936                 .parent = "verify",
1937         },
1938         {
1939                 .name   = "verify_fatal",
1940                 .type   = FIO_OPT_BOOL,
1941                 .off1   = td_var_offset(verify_fatal),
1942                 .def    = "0",
1943                 .help   = "Exit on a single verify failure, don't continue",
1944                 .parent = "verify",
1945         },
1946         {
1947                 .name   = "verify_dump",
1948                 .type   = FIO_OPT_BOOL,
1949                 .off1   = td_var_offset(verify_dump),
1950                 .def    = "0",
1951                 .help   = "Dump contents of good and bad blocks on failure",
1952                 .parent = "verify",
1953         },
1954         {
1955                 .name   = "verify_async",
1956                 .type   = FIO_OPT_INT,
1957                 .off1   = td_var_offset(verify_async),
1958                 .def    = "0",
1959                 .help   = "Number of async verifier threads to use",
1960                 .parent = "verify",
1961         },
1962         {
1963                 .name   = "verify_backlog",
1964                 .type   = FIO_OPT_STR_VAL,
1965                 .off1   = td_var_offset(verify_backlog),
1966                 .help   = "Verify after this number of blocks are written",
1967                 .parent = "verify",
1968         },
1969         {
1970                 .name   = "verify_backlog_batch",
1971                 .type   = FIO_OPT_INT,
1972                 .off1   = td_var_offset(verify_batch),
1973                 .help   = "Verify this number of IO blocks",
1974                 .parent = "verify",
1975         },
1976 #ifdef FIO_HAVE_CPU_AFFINITY
1977         {
1978                 .name   = "verify_async_cpus",
1979                 .type   = FIO_OPT_STR,
1980                 .cb     = str_verify_cpus_allowed_cb,
1981                 .help   = "Set CPUs allowed for async verify threads",
1982                 .parent = "verify_async",
1983         },
1984 #endif
1985         {
1986                 .name   = "experimental_verify",
1987                 .off1   = td_var_offset(experimental_verify),
1988                 .type   = FIO_OPT_BOOL,
1989                 .help   = "Enable experimental verification",
1990         },
1991 #ifdef FIO_HAVE_TRIM
1992         {
1993                 .name   = "trim_percentage",
1994                 .type   = FIO_OPT_INT,
1995                 .cb     = str_verify_trim_cb,
1996                 .maxval = 100,
1997                 .help   = "Number of verify blocks to discard/trim",
1998                 .parent = "verify",
1999                 .def    = "0",
2000         },
2001         {
2002                 .name   = "trim_verify_zero",
2003                 .type   = FIO_OPT_INT,
2004                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2005                 .off1   = td_var_offset(trim_zero),
2006                 .parent = "trim_percentage",
2007                 .def    = "1",
2008         },
2009         {
2010                 .name   = "trim_backlog",
2011                 .type   = FIO_OPT_STR_VAL,
2012                 .off1   = td_var_offset(trim_backlog),
2013                 .help   = "Trim after this number of blocks are written",
2014                 .parent = "trim_percentage",
2015         },
2016         {
2017                 .name   = "trim_backlog_batch",
2018                 .type   = FIO_OPT_INT,
2019                 .off1   = td_var_offset(trim_batch),
2020                 .help   = "Trim this number of IO blocks",
2021                 .parent = "trim_percentage",
2022         },
2023 #endif
2024         {
2025                 .name   = "write_iolog",
2026                 .type   = FIO_OPT_STR_STORE,
2027                 .off1   = td_var_offset(write_iolog_file),
2028                 .help   = "Store IO pattern to file",
2029         },
2030         {
2031                 .name   = "read_iolog",
2032                 .type   = FIO_OPT_STR_STORE,
2033                 .off1   = td_var_offset(read_iolog_file),
2034                 .help   = "Playback IO pattern from file",
2035         },
2036         {
2037                 .name   = "replay_no_stall",
2038                 .type   = FIO_OPT_INT,
2039                 .off1   = td_var_offset(no_stall),
2040                 .def    = "0",
2041                 .parent = "read_iolog",
2042                 .help   = "Playback IO pattern file as fast as possible without stalls",
2043         },
2044         {
2045                 .name   = "replay_redirect",
2046                 .type   = FIO_OPT_STR_STORE,
2047                 .off1   = td_var_offset(replay_redirect),
2048                 .parent = "read_iolog",
2049                 .help   = "Replay all I/O onto this device, regardless of trace device",
2050         },
2051         {
2052                 .name   = "exec_prerun",
2053                 .type   = FIO_OPT_STR_STORE,
2054                 .off1   = td_var_offset(exec_prerun),
2055                 .help   = "Execute this file prior to running job",
2056         },
2057         {
2058                 .name   = "exec_postrun",
2059                 .type   = FIO_OPT_STR_STORE,
2060                 .off1   = td_var_offset(exec_postrun),
2061                 .help   = "Execute this file after running job",
2062         },
2063 #ifdef FIO_HAVE_IOSCHED_SWITCH
2064         {
2065                 .name   = "ioscheduler",
2066                 .type   = FIO_OPT_STR_STORE,
2067                 .off1   = td_var_offset(ioscheduler),
2068                 .help   = "Use this IO scheduler on the backing device",
2069         },
2070 #endif
2071         {
2072                 .name   = "zonesize",
2073                 .type   = FIO_OPT_STR_VAL,
2074                 .off1   = td_var_offset(zone_size),
2075                 .help   = "Amount of data to read per zone",
2076                 .def    = "0",
2077         },
2078         {
2079                 .name   = "zonerange",
2080                 .type   = FIO_OPT_STR_VAL,
2081                 .off1   = td_var_offset(zone_range),
2082                 .help   = "Give size of an IO zone",
2083                 .def    = "0",
2084         },
2085         {
2086                 .name   = "zoneskip",
2087                 .type   = FIO_OPT_STR_VAL,
2088                 .off1   = td_var_offset(zone_skip),
2089                 .help   = "Space between IO zones",
2090                 .def    = "0",
2091         },
2092         {
2093                 .name   = "lockmem",
2094                 .type   = FIO_OPT_STR_VAL,
2095                 .cb     = str_lockmem_cb,
2096                 .help   = "Lock down this amount of memory",
2097                 .def    = "0",
2098         },
2099         {
2100                 .name   = "rwmixread",
2101                 .type   = FIO_OPT_INT,
2102                 .cb     = str_rwmix_read_cb,
2103                 .maxval = 100,
2104                 .help   = "Percentage of mixed workload that is reads",
2105                 .def    = "50",
2106         },
2107         {
2108                 .name   = "rwmixwrite",
2109                 .type   = FIO_OPT_INT,
2110                 .cb     = str_rwmix_write_cb,
2111                 .maxval = 100,
2112                 .help   = "Percentage of mixed workload that is writes",
2113                 .def    = "50",
2114         },
2115         {
2116                 .name   = "rwmixcycle",
2117                 .type   = FIO_OPT_DEPRECATED,
2118         },
2119         {
2120                 .name   = "nice",
2121                 .type   = FIO_OPT_INT,
2122                 .off1   = td_var_offset(nice),
2123                 .help   = "Set job CPU nice value",
2124                 .minval = -19,
2125                 .maxval = 20,
2126                 .def    = "0",
2127         },
2128 #ifdef FIO_HAVE_IOPRIO
2129         {
2130                 .name   = "prio",
2131                 .type   = FIO_OPT_INT,
2132                 .cb     = str_prio_cb,
2133                 .help   = "Set job IO priority value",
2134                 .minval = 0,
2135                 .maxval = 7,
2136         },
2137         {
2138                 .name   = "prioclass",
2139                 .type   = FIO_OPT_INT,
2140                 .cb     = str_prioclass_cb,
2141                 .help   = "Set job IO priority class",
2142                 .minval = 0,
2143                 .maxval = 3,
2144         },
2145 #endif
2146         {
2147                 .name   = "thinktime",
2148                 .type   = FIO_OPT_INT,
2149                 .off1   = td_var_offset(thinktime),
2150                 .help   = "Idle time between IO buffers (usec)",
2151                 .def    = "0",
2152         },
2153         {
2154                 .name   = "thinktime_spin",
2155                 .type   = FIO_OPT_INT,
2156                 .off1   = td_var_offset(thinktime_spin),
2157                 .help   = "Start think time by spinning this amount (usec)",
2158                 .def    = "0",
2159                 .parent = "thinktime",
2160         },
2161         {
2162                 .name   = "thinktime_blocks",
2163                 .type   = FIO_OPT_INT,
2164                 .off1   = td_var_offset(thinktime_blocks),
2165                 .help   = "IO buffer period between 'thinktime'",
2166                 .def    = "1",
2167                 .parent = "thinktime",
2168         },
2169         {
2170                 .name   = "rate",
2171                 .type   = FIO_OPT_INT,
2172                 .off1   = td_var_offset(rate[DDIR_READ]),
2173                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2174                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2175                 .help   = "Set bandwidth rate",
2176         },
2177         {
2178                 .name   = "ratemin",
2179                 .type   = FIO_OPT_INT,
2180                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2181                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2182                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2183                 .help   = "Job must meet this rate or it will be shutdown",
2184                 .parent = "rate",
2185         },
2186         {
2187                 .name   = "rate_iops",
2188                 .type   = FIO_OPT_INT,
2189                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2190                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2191                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2192                 .help   = "Limit IO used to this number of IO operations/sec",
2193         },
2194         {
2195                 .name   = "rate_iops_min",
2196                 .type   = FIO_OPT_INT,
2197                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2198                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2199                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2200                 .help   = "Job must meet this rate or it will be shut down",
2201                 .parent = "rate_iops",
2202         },
2203         {
2204                 .name   = "ratecycle",
2205                 .type   = FIO_OPT_INT,
2206                 .off1   = td_var_offset(ratecycle),
2207                 .help   = "Window average for rate limits (msec)",
2208                 .def    = "1000",
2209                 .parent = "rate",
2210         },
2211         {
2212                 .name   = "max_latency",
2213                 .type   = FIO_OPT_INT,
2214                 .off1   = td_var_offset(max_latency),
2215                 .help   = "Maximum tolerated IO latency (usec)",
2216         },
2217         {
2218                 .name   = "invalidate",
2219                 .type   = FIO_OPT_BOOL,
2220                 .off1   = td_var_offset(invalidate_cache),
2221                 .help   = "Invalidate buffer/page cache prior to running job",
2222                 .def    = "1",
2223         },
2224         {
2225                 .name   = "sync",
2226                 .type   = FIO_OPT_BOOL,
2227                 .off1   = td_var_offset(sync_io),
2228                 .help   = "Use O_SYNC for buffered writes",
2229                 .def    = "0",
2230                 .parent = "buffered",
2231         },
2232         {
2233                 .name   = "bwavgtime",
2234                 .type   = FIO_OPT_INT,
2235                 .off1   = td_var_offset(bw_avg_time),
2236                 .help   = "Time window over which to calculate bandwidth"
2237                           " (msec)",
2238                 .def    = "500",
2239                 .parent = "write_bw_log",
2240         },
2241         {
2242                 .name   = "iopsavgtime",
2243                 .type   = FIO_OPT_INT,
2244                 .off1   = td_var_offset(iops_avg_time),
2245                 .help   = "Time window over which to calculate IOPS (msec)",
2246                 .def    = "500",
2247                 .parent = "write_iops_log",
2248         },
2249         {
2250                 .name   = "create_serialize",
2251                 .type   = FIO_OPT_BOOL,
2252                 .off1   = td_var_offset(create_serialize),
2253                 .help   = "Serialize creating of job files",
2254                 .def    = "1",
2255         },
2256         {
2257                 .name   = "create_fsync",
2258                 .type   = FIO_OPT_BOOL,
2259                 .off1   = td_var_offset(create_fsync),
2260                 .help   = "fsync file after creation",
2261                 .def    = "1",
2262         },
2263         {
2264                 .name   = "create_on_open",
2265                 .type   = FIO_OPT_BOOL,
2266                 .off1   = td_var_offset(create_on_open),
2267                 .help   = "Create files when they are opened for IO",
2268                 .def    = "0",
2269         },
2270         {
2271                 .name   = "create_only",
2272                 .type   = FIO_OPT_BOOL,
2273                 .off1   = td_var_offset(create_only),
2274                 .help   = "Only perform file creation phase",
2275                 .def    = "0",
2276         },
2277         {
2278                 .name   = "pre_read",
2279                 .type   = FIO_OPT_BOOL,
2280                 .off1   = td_var_offset(pre_read),
2281                 .help   = "Pre-read files before starting official testing",
2282                 .def    = "0",
2283         },
2284         {
2285                 .name   = "cpuload",
2286                 .type   = FIO_OPT_INT,
2287                 .off1   = td_var_offset(cpuload),
2288                 .help   = "Use this percentage of CPU",
2289         },
2290         {
2291                 .name   = "cpuchunks",
2292                 .type   = FIO_OPT_INT,
2293                 .off1   = td_var_offset(cpucycle),
2294                 .help   = "Length of the CPU burn cycles (usecs)",
2295                 .def    = "50000",
2296                 .parent = "cpuload",
2297         },
2298 #ifdef FIO_HAVE_CPU_AFFINITY
2299         {
2300                 .name   = "cpumask",
2301                 .type   = FIO_OPT_INT,
2302                 .cb     = str_cpumask_cb,
2303                 .help   = "CPU affinity mask",
2304         },
2305         {
2306                 .name   = "cpus_allowed",
2307                 .type   = FIO_OPT_STR,
2308                 .cb     = str_cpus_allowed_cb,
2309                 .help   = "Set CPUs allowed",
2310         },
2311 #endif
2312 #ifdef CONFIG_LIBNUMA
2313         {
2314                 .name   = "numa_cpu_nodes",
2315                 .type   = FIO_OPT_STR,
2316                 .cb     = str_numa_cpunodes_cb,
2317                 .help   = "NUMA CPU nodes bind",
2318         },
2319         {
2320                 .name   = "numa_mem_policy",
2321                 .type   = FIO_OPT_STR,
2322                 .cb     = str_numa_mpol_cb,
2323                 .help   = "NUMA memory policy setup",
2324         },
2325 #endif
2326         {
2327                 .name   = "end_fsync",
2328                 .type   = FIO_OPT_BOOL,
2329                 .off1   = td_var_offset(end_fsync),
2330                 .help   = "Include fsync at the end of job",
2331                 .def    = "0",
2332         },
2333         {
2334                 .name   = "fsync_on_close",
2335                 .type   = FIO_OPT_BOOL,
2336                 .off1   = td_var_offset(fsync_on_close),
2337                 .help   = "fsync files on close",
2338                 .def    = "0",
2339         },
2340         {
2341                 .name   = "unlink",
2342                 .type   = FIO_OPT_BOOL,
2343                 .off1   = td_var_offset(unlink),
2344                 .help   = "Unlink created files after job has completed",
2345                 .def    = "0",
2346         },
2347         {
2348                 .name   = "exitall",
2349                 .type   = FIO_OPT_STR_SET,
2350                 .cb     = str_exitall_cb,
2351                 .help   = "Terminate all jobs when one exits",
2352         },
2353         {
2354                 .name   = "stonewall",
2355                 .alias  = "wait_for_previous",
2356                 .type   = FIO_OPT_STR_SET,
2357                 .off1   = td_var_offset(stonewall),
2358                 .help   = "Insert a hard barrier between this job and previous",
2359         },
2360         {
2361                 .name   = "new_group",
2362                 .type   = FIO_OPT_STR_SET,
2363                 .off1   = td_var_offset(new_group),
2364                 .help   = "Mark the start of a new group (for reporting)",
2365         },
2366         {
2367                 .name   = "thread",
2368                 .type   = FIO_OPT_STR_SET,
2369                 .off1   = td_var_offset(use_thread),
2370                 .help   = "Use threads instead of forks",
2371         },
2372         {
2373                 .name   = "write_bw_log",
2374                 .type   = FIO_OPT_STR,
2375                 .off1   = td_var_offset(write_bw_log),
2376                 .cb     = str_write_bw_log_cb,
2377                 .help   = "Write log of bandwidth during run",
2378         },
2379         {
2380                 .name   = "write_lat_log",
2381                 .type   = FIO_OPT_STR,
2382                 .off1   = td_var_offset(write_lat_log),
2383                 .cb     = str_write_lat_log_cb,
2384                 .help   = "Write log of latency during run",
2385         },
2386         {
2387                 .name   = "write_iops_log",
2388                 .type   = FIO_OPT_STR,
2389                 .off1   = td_var_offset(write_iops_log),
2390                 .cb     = str_write_iops_log_cb,
2391                 .help   = "Write log of IOPS during run",
2392         },
2393         {
2394                 .name   = "log_avg_msec",
2395                 .type   = FIO_OPT_INT,
2396                 .off1   = td_var_offset(log_avg_msec),
2397                 .help   = "Average bw/iops/lat logs over this period of time",
2398                 .def    = "0",
2399         },
2400         {
2401                 .name   = "hugepage-size",
2402                 .type   = FIO_OPT_INT,
2403                 .off1   = td_var_offset(hugepage_size),
2404                 .help   = "When using hugepages, specify size of each page",
2405                 .def    = __fio_stringify(FIO_HUGE_PAGE),
2406         },
2407         {
2408                 .name   = "group_reporting",
2409                 .type   = FIO_OPT_STR_SET,
2410                 .off1   = td_var_offset(group_reporting),
2411                 .help   = "Do reporting on a per-group basis",
2412         },
2413         {
2414                 .name   = "zero_buffers",
2415                 .type   = FIO_OPT_STR_SET,
2416                 .off1   = td_var_offset(zero_buffers),
2417                 .help   = "Init IO buffers to all zeroes",
2418         },
2419         {
2420                 .name   = "refill_buffers",
2421                 .type   = FIO_OPT_STR_SET,
2422                 .off1   = td_var_offset(refill_buffers),
2423                 .help   = "Refill IO buffers on every IO submit",
2424         },
2425         {
2426                 .name   = "scramble_buffers",
2427                 .type   = FIO_OPT_BOOL,
2428                 .off1   = td_var_offset(scramble_buffers),
2429                 .help   = "Slightly scramble buffers on every IO submit",
2430                 .def    = "1",
2431         },
2432         {
2433                 .name   = "buffer_compress_percentage",
2434                 .type   = FIO_OPT_INT,
2435                 .off1   = td_var_offset(compress_percentage),
2436                 .maxval = 100,
2437                 .minval = 1,
2438                 .help   = "How compressible the buffer is (approximately)",
2439         },
2440         {
2441                 .name   = "buffer_compress_chunk",
2442                 .type   = FIO_OPT_INT,
2443                 .off1   = td_var_offset(compress_chunk),
2444                 .parent = "buffer_compress_percentage",
2445                 .help   = "Size of compressible region in buffer",
2446         },
2447         {
2448                 .name   = "clat_percentiles",
2449                 .type   = FIO_OPT_BOOL,
2450                 .off1   = td_var_offset(clat_percentiles),
2451                 .help   = "Enable the reporting of completion latency percentiles",
2452                 .def    = "1",
2453         },
2454         {
2455                 .name   = "percentile_list",
2456                 .type   = FIO_OPT_FLOAT_LIST,
2457                 .off1   = td_var_offset(percentile_list),
2458                 .off2   = td_var_offset(percentile_precision),
2459                 .help   = "Specify a custom list of percentiles to report",
2460                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
2461                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2462                 .minfp  = 0.0,
2463                 .maxfp  = 100.0,
2464         },
2465
2466 #ifdef FIO_HAVE_DISK_UTIL
2467         {
2468                 .name   = "disk_util",
2469                 .type   = FIO_OPT_BOOL,
2470                 .off1   = td_var_offset(do_disk_util),
2471                 .help   = "Log disk utilization statistics",
2472                 .def    = "1",
2473         },
2474 #endif
2475         {
2476                 .name   = "gtod_reduce",
2477                 .type   = FIO_OPT_BOOL,
2478                 .help   = "Greatly reduce number of gettimeofday() calls",
2479                 .cb     = str_gtod_reduce_cb,
2480                 .def    = "0",
2481         },
2482         {
2483                 .name   = "disable_lat",
2484                 .type   = FIO_OPT_BOOL,
2485                 .off1   = td_var_offset(disable_lat),
2486                 .help   = "Disable latency numbers",
2487                 .parent = "gtod_reduce",
2488                 .def    = "0",
2489         },
2490         {
2491                 .name   = "disable_clat",
2492                 .type   = FIO_OPT_BOOL,
2493                 .off1   = td_var_offset(disable_clat),
2494                 .help   = "Disable completion latency numbers",
2495                 .parent = "gtod_reduce",
2496                 .def    = "0",
2497         },
2498         {
2499                 .name   = "disable_slat",
2500                 .type   = FIO_OPT_BOOL,
2501                 .off1   = td_var_offset(disable_slat),
2502                 .help   = "Disable submission latency numbers",
2503                 .parent = "gtod_reduce",
2504                 .def    = "0",
2505         },
2506         {
2507                 .name   = "disable_bw_measurement",
2508                 .type   = FIO_OPT_BOOL,
2509                 .off1   = td_var_offset(disable_bw),
2510                 .help   = "Disable bandwidth logging",
2511                 .parent = "gtod_reduce",
2512                 .def    = "0",
2513         },
2514         {
2515                 .name   = "gtod_cpu",
2516                 .type   = FIO_OPT_INT,
2517                 .cb     = str_gtod_cpu_cb,
2518                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2519                 .verify = gtod_cpu_verify,
2520         },
2521         {
2522                 .name   = "unified_rw_reporting",
2523                 .type   = FIO_OPT_BOOL,
2524                 .off1   = td_var_offset(unified_rw_rep),
2525                 .help   = "Unify reporting across data direction",
2526                 .def    = "0",
2527         },
2528         {
2529                 .name   = "continue_on_error",
2530                 .type   = FIO_OPT_STR,
2531                 .off1   = td_var_offset(continue_on_error),
2532                 .help   = "Continue on non-fatal errors during IO",
2533                 .def    = "none",
2534                 .posval = {
2535                           { .ival = "none",
2536                             .oval = ERROR_TYPE_NONE,
2537                             .help = "Exit when an error is encountered",
2538                           },
2539                           { .ival = "read",
2540                             .oval = ERROR_TYPE_READ,
2541                             .help = "Continue on read errors only",
2542                           },
2543                           { .ival = "write",
2544                             .oval = ERROR_TYPE_WRITE,
2545                             .help = "Continue on write errors only",
2546                           },
2547                           { .ival = "io",
2548                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2549                             .help = "Continue on any IO errors",
2550                           },
2551                           { .ival = "verify",
2552                             .oval = ERROR_TYPE_VERIFY,
2553                             .help = "Continue on verify errors only",
2554                           },
2555                           { .ival = "all",
2556                             .oval = ERROR_TYPE_ANY,
2557                             .help = "Continue on all io and verify errors",
2558                           },
2559                           { .ival = "0",
2560                             .oval = ERROR_TYPE_NONE,
2561                             .help = "Alias for 'none'",
2562                           },
2563                           { .ival = "1",
2564                             .oval = ERROR_TYPE_ANY,
2565                             .help = "Alias for 'all'",
2566                           },
2567                 },
2568         },
2569         {
2570                 .name   = "ignore_error",
2571                 .type   = FIO_OPT_STR,
2572                 .cb     = str_ignore_error_cb,
2573                 .help   = "Set a specific list of errors to ignore",
2574                 .parent = "rw",
2575         },
2576         {
2577                 .name   = "error_dump",
2578                 .type   = FIO_OPT_BOOL,
2579                 .off1   = td_var_offset(error_dump),
2580                 .def    = "0",
2581                 .help   = "Dump info on each error",
2582         },
2583
2584         {
2585                 .name   = "profile",
2586                 .type   = FIO_OPT_STR_STORE,
2587                 .off1   = td_var_offset(profile),
2588                 .help   = "Select a specific builtin performance test",
2589         },
2590         {
2591                 .name   = "cgroup",
2592                 .type   = FIO_OPT_STR_STORE,
2593                 .off1   = td_var_offset(cgroup),
2594                 .help   = "Add job to cgroup of this name",
2595         },
2596         {
2597                 .name   = "cgroup_weight",
2598                 .type   = FIO_OPT_INT,
2599                 .off1   = td_var_offset(cgroup_weight),
2600                 .help   = "Use given weight for cgroup",
2601                 .minval = 100,
2602                 .maxval = 1000,
2603         },
2604         {
2605                 .name   = "cgroup_nodelete",
2606                 .type   = FIO_OPT_BOOL,
2607                 .off1   = td_var_offset(cgroup_nodelete),
2608                 .help   = "Do not delete cgroups after job completion",
2609                 .def    = "0",
2610         },
2611         {
2612                 .name   = "uid",
2613                 .type   = FIO_OPT_INT,
2614                 .off1   = td_var_offset(uid),
2615                 .help   = "Run job with this user ID",
2616         },
2617         {
2618                 .name   = "gid",
2619                 .type   = FIO_OPT_INT,
2620                 .off1   = td_var_offset(gid),
2621                 .help   = "Run job with this group ID",
2622         },
2623         {
2624                 .name   = "flow_id",
2625                 .type   = FIO_OPT_INT,
2626                 .off1   = td_var_offset(flow_id),
2627                 .help   = "The flow index ID to use",
2628                 .def    = "0",
2629         },
2630         {
2631                 .name   = "flow",
2632                 .type   = FIO_OPT_INT,
2633                 .off1   = td_var_offset(flow),
2634                 .help   = "Weight for flow control of this job",
2635                 .parent = "flow_id",
2636                 .def    = "0",
2637         },
2638         {
2639                 .name   = "flow_watermark",
2640                 .type   = FIO_OPT_INT,
2641                 .off1   = td_var_offset(flow_watermark),
2642                 .help   = "High watermark for flow control. This option"
2643                         " should be set to the same value for all threads"
2644                         " with non-zero flow.",
2645                 .parent = "flow_id",
2646                 .def    = "1024",
2647         },
2648         {
2649                 .name   = "flow_sleep",
2650                 .type   = FIO_OPT_INT,
2651                 .off1   = td_var_offset(flow_sleep),
2652                 .help   = "How many microseconds to sleep after being held"
2653                         " back by the flow control mechanism",
2654                 .parent = "flow_id",
2655                 .def    = "0",
2656         },
2657         {
2658                 .name = NULL,
2659         },
2660 };
2661
2662 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2663                         const char *name, int val)
2664 {
2665         lopt->name = (char *) name;
2666         lopt->val = val;
2667         if (o->type == FIO_OPT_STR_SET)
2668                 lopt->has_arg = no_argument;
2669         else
2670                 lopt->has_arg = required_argument;
2671 }
2672
2673 static void options_to_lopts(struct fio_option *opts,
2674                               struct option *long_options,
2675                               int i, int option_type)
2676 {
2677         struct fio_option *o = &opts[0];
2678         while (o->name) {
2679                 add_to_lopt(&long_options[i], o, o->name, option_type);
2680                 if (o->alias) {
2681                         i++;
2682                         add_to_lopt(&long_options[i], o, o->alias, option_type);
2683                 }
2684
2685                 i++;
2686                 o++;
2687                 assert(i < FIO_NR_OPTIONS);
2688         }
2689 }
2690
2691 void fio_options_set_ioengine_opts(struct option *long_options,
2692                                    struct thread_data *td)
2693 {
2694         unsigned int i;
2695
2696         i = 0;
2697         while (long_options[i].name) {
2698                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2699                         memset(&long_options[i], 0, sizeof(*long_options));
2700                         break;
2701                 }
2702                 i++;
2703         }
2704
2705         /*
2706          * Just clear out the prior ioengine options.
2707          */
2708         if (!td || !td->eo)
2709                 return;
2710
2711         options_to_lopts(td->io_ops->options, long_options, i,
2712                          FIO_GETOPT_IOENGINE);
2713 }
2714
2715 void fio_options_dup_and_init(struct option *long_options)
2716 {
2717         unsigned int i;
2718
2719         options_init(options);
2720
2721         i = 0;
2722         while (long_options[i].name)
2723                 i++;
2724
2725         options_to_lopts(options, long_options, i, FIO_GETOPT_JOB);
2726 }
2727
2728 struct fio_keyword {
2729         const char *word;
2730         const char *desc;
2731         char *replace;
2732 };
2733
2734 static struct fio_keyword fio_keywords[] = {
2735         {
2736                 .word   = "$pagesize",
2737                 .desc   = "Page size in the system",
2738         },
2739         {
2740                 .word   = "$mb_memory",
2741                 .desc   = "Megabytes of memory online",
2742         },
2743         {
2744                 .word   = "$ncpus",
2745                 .desc   = "Number of CPUs online in the system",
2746         },
2747         {
2748                 .word   = NULL,
2749         },
2750 };
2751
2752 void fio_keywords_init(void)
2753 {
2754         unsigned long long mb_memory;
2755         char buf[128];
2756         long l;
2757
2758         sprintf(buf, "%lu", (unsigned long) page_size);
2759         fio_keywords[0].replace = strdup(buf);
2760
2761         mb_memory = os_phys_mem() / (1024 * 1024);
2762         sprintf(buf, "%llu", mb_memory);
2763         fio_keywords[1].replace = strdup(buf);
2764
2765         l = cpus_online();
2766         sprintf(buf, "%lu", l);
2767         fio_keywords[2].replace = strdup(buf);
2768 }
2769
2770 #define BC_APP          "bc"
2771
2772 static char *bc_calc(char *str)
2773 {
2774         char buf[128], *tmp;
2775         FILE *f;
2776         int ret;
2777
2778         /*
2779          * No math, just return string
2780          */
2781         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2782              !strchr(str, '/')) || strchr(str, '\''))
2783                 return str;
2784
2785         /*
2786          * Split option from value, we only need to calculate the value
2787          */
2788         tmp = strchr(str, '=');
2789         if (!tmp)
2790                 return str;
2791
2792         tmp++;
2793
2794         /*
2795          * Prevent buffer overflows; such a case isn't reasonable anyway
2796          */
2797         if (strlen(str) >= 128 || strlen(tmp) > 100)
2798                 return str;
2799
2800         sprintf(buf, "which %s > /dev/null", BC_APP);
2801         if (system(buf)) {
2802                 log_err("fio: bc is needed for performing math\n");
2803                 return NULL;
2804         }
2805
2806         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2807         f = popen(buf, "r");
2808         if (!f) {
2809                 return NULL;
2810         }
2811
2812         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2813         if (ret <= 0) {
2814                 return NULL;
2815         }
2816
2817         pclose(f);
2818         buf[(tmp - str) + ret - 1] = '\0';
2819         memcpy(buf, str, tmp - str);
2820         free(str);
2821         return strdup(buf);
2822 }
2823
2824 /*
2825  * Return a copy of the input string with substrings of the form ${VARNAME}
2826  * substituted with the value of the environment variable VARNAME.  The
2827  * substitution always occurs, even if VARNAME is empty or the corresponding
2828  * environment variable undefined.
2829  */
2830 static char *option_dup_subs(const char *opt)
2831 {
2832         char out[OPT_LEN_MAX+1];
2833         char in[OPT_LEN_MAX+1];
2834         char *outptr = out;
2835         char *inptr = in;
2836         char *ch1, *ch2, *env;
2837         ssize_t nchr = OPT_LEN_MAX;
2838         size_t envlen;
2839
2840         if (strlen(opt) + 1 > OPT_LEN_MAX) {
2841                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2842                 return NULL;
2843         }
2844
2845         in[OPT_LEN_MAX] = '\0';
2846         strncpy(in, opt, OPT_LEN_MAX);
2847
2848         while (*inptr && nchr > 0) {
2849                 if (inptr[0] == '$' && inptr[1] == '{') {
2850                         ch2 = strchr(inptr, '}');
2851                         if (ch2 && inptr+1 < ch2) {
2852                                 ch1 = inptr+2;
2853                                 inptr = ch2+1;
2854                                 *ch2 = '\0';
2855
2856                                 env = getenv(ch1);
2857                                 if (env) {
2858                                         envlen = strlen(env);
2859                                         if (envlen <= nchr) {
2860                                                 memcpy(outptr, env, envlen);
2861                                                 outptr += envlen;
2862                                                 nchr -= envlen;
2863                                         }
2864                                 }
2865
2866                                 continue;
2867                         }
2868                 }
2869
2870                 *outptr++ = *inptr++;
2871                 --nchr;
2872         }
2873
2874         *outptr = '\0';
2875         return strdup(out);
2876 }
2877
2878 /*
2879  * Look for reserved variable names and replace them with real values
2880  */
2881 static char *fio_keyword_replace(char *opt)
2882 {
2883         char *s;
2884         int i;
2885         int docalc = 0;
2886
2887         for (i = 0; fio_keywords[i].word != NULL; i++) {
2888                 struct fio_keyword *kw = &fio_keywords[i];
2889
2890                 while ((s = strstr(opt, kw->word)) != NULL) {
2891                         char *new = malloc(strlen(opt) + 1);
2892                         char *o_org = opt;
2893                         int olen = s - opt;
2894                         int len;
2895
2896                         /*
2897                          * Copy part of the string before the keyword and
2898                          * sprintf() the replacement after it.
2899                          */
2900                         memcpy(new, opt, olen);
2901                         len = sprintf(new + olen, "%s", kw->replace);
2902
2903                         /*
2904                          * If there's more in the original string, copy that
2905                          * in too
2906                          */
2907                         opt += strlen(kw->word) + olen;
2908                         if (strlen(opt))
2909                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2910
2911                         /*
2912                          * replace opt and free the old opt
2913                          */
2914                         opt = new;
2915                         free(o_org);
2916
2917                         docalc = 1;
2918                 }
2919         }
2920
2921         /*
2922          * Check for potential math and invoke bc, if possible
2923          */
2924         if (docalc)
2925                 opt = bc_calc(opt);
2926
2927         return opt;
2928 }
2929
2930 static char **dup_and_sub_options(char **opts, int num_opts)
2931 {
2932         int i;
2933         char **opts_copy = malloc(num_opts * sizeof(*opts));
2934         for (i = 0; i < num_opts; i++) {
2935                 opts_copy[i] = option_dup_subs(opts[i]);
2936                 if (!opts_copy[i])
2937                         continue;
2938                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2939         }
2940         return opts_copy;
2941 }
2942
2943 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2944 {
2945         int i, ret, unknown;
2946         char **opts_copy;
2947
2948         sort_options(opts, options, num_opts);
2949         opts_copy = dup_and_sub_options(opts, num_opts);
2950
2951         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2952                 struct fio_option *o;
2953                 int newret = parse_option(opts_copy[i], opts[i], options, &o,
2954                                           td);
2955
2956                 if (opts_copy[i]) {
2957                         if (newret && !o) {
2958                                 unknown++;
2959                                 continue;
2960                         }
2961                         free(opts_copy[i]);
2962                         opts_copy[i] = NULL;
2963                 }
2964
2965                 ret |= newret;
2966         }
2967
2968         if (unknown) {
2969                 ret |= ioengine_load(td);
2970                 if (td->eo) {
2971                         sort_options(opts_copy, td->io_ops->options, num_opts);
2972                         opts = opts_copy;
2973                 }
2974                 for (i = 0; i < num_opts; i++) {
2975                         struct fio_option *o = NULL;
2976                         int newret = 1;
2977                         if (!opts_copy[i])
2978                                 continue;
2979
2980                         if (td->eo)
2981                                 newret = parse_option(opts_copy[i], opts[i],
2982                                                       td->io_ops->options, &o,
2983                                                       td->eo);
2984
2985                         ret |= newret;
2986                         if (!o)
2987                                 log_err("Bad option <%s>\n", opts[i]);
2988
2989                         free(opts_copy[i]);
2990                         opts_copy[i] = NULL;
2991                 }
2992         }
2993
2994         free(opts_copy);
2995         return ret;
2996 }
2997
2998 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2999 {
3000         return parse_cmd_option(opt, val, options, td);
3001 }
3002
3003 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
3004                                 char *val)
3005 {
3006         return parse_cmd_option(opt, val, td->io_ops->options, td);
3007 }
3008
3009 void fio_fill_default_options(struct thread_data *td)
3010 {
3011         fill_default_options(td, options);
3012 }
3013
3014 int fio_show_option_help(const char *opt)
3015 {
3016         return show_cmd_help(options, opt);
3017 }
3018
3019 void options_mem_dupe(void *data, struct fio_option *options)
3020 {
3021         struct fio_option *o;
3022         char **ptr;
3023
3024         for (o = &options[0]; o->name; o++) {
3025                 if (o->type != FIO_OPT_STR_STORE)
3026                         continue;
3027
3028                 ptr = td_var(data, o->off1);
3029                 if (*ptr)
3030                         *ptr = strdup(*ptr);
3031         }
3032 }
3033
3034 /*
3035  * dupe FIO_OPT_STR_STORE options
3036  */
3037 void fio_options_mem_dupe(struct thread_data *td)
3038 {
3039         options_mem_dupe(&td->o, options);
3040
3041         if (td->eo && td->io_ops) {
3042                 void *oldeo = td->eo;
3043
3044                 td->eo = malloc(td->io_ops->option_struct_size);
3045                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
3046                 options_mem_dupe(td->eo, td->io_ops->options);
3047         }
3048 }
3049
3050 unsigned int fio_get_kb_base(void *data)
3051 {
3052         struct thread_data *td = data;
3053         unsigned int kb_base = 0;
3054
3055         if (td)
3056                 kb_base = td->o.kb_base;
3057         if (!kb_base)
3058                 kb_base = 1024;
3059
3060         return kb_base;
3061 }
3062
3063 int add_option(struct fio_option *o)
3064 {
3065         struct fio_option *__o;
3066         int opt_index = 0;
3067
3068         __o = options;
3069         while (__o->name) {
3070                 opt_index++;
3071                 __o++;
3072         }
3073
3074         memcpy(&options[opt_index], o, sizeof(*o));
3075         return 0;
3076 }
3077
3078 void invalidate_profile_options(const char *prof_name)
3079 {
3080         struct fio_option *o;
3081
3082         o = options;
3083         while (o->name) {
3084                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
3085                         o->type = FIO_OPT_INVALID;
3086                         o->prof_name = NULL;
3087                 }
3088                 o++;
3089         }
3090 }
3091
3092 void add_opt_posval(const char *optname, const char *ival, const char *help)
3093 {
3094         struct fio_option *o;
3095         unsigned int i;
3096
3097         o = find_option(options, optname);
3098         if (!o)
3099                 return;
3100
3101         for (i = 0; i < PARSE_MAX_VP; i++) {
3102                 if (o->posval[i].ival)
3103                         continue;
3104
3105                 o->posval[i].ival = ival;
3106                 o->posval[i].help = help;
3107                 break;
3108         }
3109 }
3110
3111 void del_opt_posval(const char *optname, const char *ival)
3112 {
3113         struct fio_option *o;
3114         unsigned int i;
3115
3116         o = find_option(options, optname);
3117         if (!o)
3118                 return;
3119
3120         for (i = 0; i < PARSE_MAX_VP; i++) {
3121                 if (!o->posval[i].ival)
3122                         continue;
3123                 if (strcmp(o->posval[i].ival, ival))
3124                         continue;
3125
3126                 o->posval[i].ival = NULL;
3127                 o->posval[i].help = NULL;
3128         }
3129 }
3130
3131 void fio_options_free(struct thread_data *td)
3132 {
3133         options_free(options, td);
3134         if (td->eo && td->io_ops && td->io_ops->options) {
3135                 options_free(td->io_ops->options, td->eo);
3136                 free(td->eo);
3137                 td->eo = NULL;
3138         }
3139 }