options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163
 164 }
 165
 166 static int str_bssplit_cb(void *data, const char *input)
 167 {
 168         struct thread_data *td = data;
 169         char *str, *p, *odir, *ddir;
 170         int ret = 0;
 171
 172         p = str = strdup(input);
 173
 174         strip_blank_front(&str);
 175         strip_blank_end(str);
 176
 177         odir = strchr(str, ',');
 178         if (odir) {
 179                 ddir = strchr(odir + 1, ',');
 180                 if (ddir) {
 181                         ret = bssplit_ddir(td, DDIR_TRIM, ddir + 1);
 182                         if (!ret)
 183                                 *ddir = '\0';
 184                 } else {
 185                         char *op;
 186
 187                         op = strdup(odir + 1);
 188                         ret = bssplit_ddir(td, DDIR_TRIM, op);
 189
 190                         free(op);
 191                 }
 192                 if (!ret)
 193                         ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 194                 if (!ret) {
 195                         *odir = '\0';
 196                         ret = bssplit_ddir(td, DDIR_READ, str);
 197                 }
 198         } else {
 199                 char *op;
 200
 201                 op = strdup(str);
 202                 ret = bssplit_ddir(td, DDIR_WRITE, op);
 203                 free(op);
 204
 205                 if (!ret) {
 206                         op = strdup(str);
 207                         ret = bssplit_ddir(td, DDIR_TRIM, op);
 208                         free(op);
 209                 }
 210                 ret = bssplit_ddir(td, DDIR_READ, str);
 211         }
 212
 213         free(p);
 214         return ret;
 215 }
 216
 217 static int str2error(char *str)
 218 {
 219         const char * err[] = {"EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 220                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 221                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 222                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 223                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 224                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 225                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 226                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE"};
 227         int i = 0, num = sizeof(err) / sizeof(void *);
 228
 229         while( i < num) {
 230                 if (!strcmp(err[i], str))
 231                         return i + 1;
 232                 i++;
 233         }
 234         return 0;
 235 }
 236
 237 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 238 {
 239         unsigned int i;
 240         int *error;
 241         char *fname;
 242
 243         if (etype >= ERROR_TYPE_CNT) {
 244                 log_err("Illegal error type\n");
 245                 return 1;
 246         }
 247
 248         td->o.ignore_error_nr[etype] = 4;
 249         error = malloc(4 * sizeof(struct bssplit));
 250
 251         i = 0;
 252         while ((fname = strsep(&str, ":")) != NULL) {
 253
 254                 if (!strlen(fname))
 255                         break;
 256
 257                 /*
 258                  * grow struct buffer, if needed
 259                  */
 260                 if (i == td->o.ignore_error_nr[etype]) {
 261                         td->o.ignore_error_nr[etype] <<= 1;
 262                         error = realloc(error, td->o.ignore_error_nr[etype]
 263                                                   * sizeof(int));
 264                 }
 265                 if (fname[0] == 'E') {
 266                         error[i] = str2error(fname);
 267                 } else {
 268                         error[i] = atoi(fname);
 269                         if (error[i] < 0)
 270                                 error[i] = error[i];
 271                 }
 272                 if (!error[i]) {
 273                         log_err("Unknown error %s, please use number value \n",
 274                                   fname);
 275                         return 1;
 276                 }
 277                 i++;
 278         }
 279         if (i) {
 280                 td->o.continue_on_error |= 1 << etype;
 281                 td->o.ignore_error_nr[etype] = i;
 282                 td->o.ignore_error[etype] = error;
 283         }
 284         return 0;
 285
 286 }
 287
 288 static int str_ignore_error_cb(void *data, const char *input)
 289 {
 290         struct thread_data *td = data;
 291         char *str, *p, *n;
 292         int type = 0, ret = 1;
 293         p = str = strdup(input);
 294
 295         strip_blank_front(&str);
 296         strip_blank_end(str);
 297
 298         while (p) {
 299                 n = strchr(p, ',');
 300                 if (n)
 301                         *n++ = '\0';
 302                 ret = ignore_error_type(td, type, p);
 303                 if (ret)
 304                         break;
 305                 p = n;
 306                 type++;
 307         }
 308         free(str);
 309         return ret;
 310 }
 311
 312 static int str_rw_cb(void *data, const char *str)
 313 {
 314         struct thread_data *td = data;
 315         char *nr = get_opt_postfix(str);
 316
 317         td->o.ddir_seq_nr = 1;
 318         td->o.ddir_seq_add = 0;
 319
 320         if (!nr)
 321                 return 0;
 322
 323         if (td_random(td))
 324                 td->o.ddir_seq_nr = atoi(nr);
 325         else {
 326                 long long val;
 327
 328                 if (str_to_decimal(nr, &val, 1, td)) {
 329                         log_err("fio: rw postfix parsing failed\n");
 330                         free(nr);
 331                         return 1;
 332                 }
 333
 334                 td->o.ddir_seq_add = val;
 335         }
 336
 337         free(nr);
 338         return 0;
 339 }
 340
 341 static int str_mem_cb(void *data, const char *mem)
 342 {
 343         struct thread_data *td = data;
 344
 345         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 346                 td->mmapfile = get_opt_postfix(mem);
 347                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 348                         log_err("fio: mmaphuge:/path/to/file\n");
 349                         return 1;
 350                 }
 351         }
 352
 353         return 0;
 354 }
 355
 356 static int str_verify_cb(void *data, const char *mem)
 357 {
 358         struct thread_data *td = data;
 359
 360         if (td->o.verify == VERIFY_CRC32C_INTEL ||
 361             td->o.verify == VERIFY_CRC32C) {
 362                 crc32c_intel_probe();
 363         }
 364
 365         return 0;
 366 }
 367
 368 static int fio_clock_source_cb(void *data, const char *str)
 369 {
 370         struct thread_data *td = data;
 371
 372         fio_clock_source = td->o.clocksource;
 373         fio_clock_source_set = 1;
 374         fio_clock_init();
 375         return 0;
 376 }
 377
 378 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 379 {
 380         mlock_size = *val;
 381         return 0;
 382 }
 383
 384 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 385 {
 386         struct thread_data *td = data;
 387
 388         td->o.rwmix[DDIR_READ] = *val;
 389         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 390         return 0;
 391 }
 392
 393 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 394 {
 395         struct thread_data *td = data;
 396
 397         td->o.rwmix[DDIR_WRITE] = *val;
 398         td->o.rwmix[DDIR_READ] = 100 - *val;
 399         return 0;
 400 }
 401
 402 #ifdef FIO_HAVE_IOPRIO
 403 static int str_prioclass_cb(void *data, unsigned long long *val)
 404 {
 405         struct thread_data *td = data;
 406         unsigned short mask;
 407
 408         /*
 409          * mask off old class bits, str_prio_cb() may have set a default class
 410          */
 411         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 412         td->ioprio &= mask;
 413
 414         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 415         td->ioprio_set = 1;
 416         return 0;
 417 }
 418
 419 static int str_prio_cb(void *data, unsigned long long *val)
 420 {
 421         struct thread_data *td = data;
 422
 423         td->ioprio |= *val;
 424
 425         /*
 426          * If no class is set, assume BE
 427          */
 428         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 429                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 430
 431         td->ioprio_set = 1;
 432         return 0;
 433 }
 434 #endif
 435
 436 static int str_exitall_cb(void)
 437 {
 438         exitall_on_terminate = 1;
 439         return 0;
 440 }
 441
 442 #ifdef FIO_HAVE_CPU_AFFINITY
 443 static int str_cpumask_cb(void *data, unsigned long long *val)
 444 {
 445         struct thread_data *td = data;
 446         unsigned int i;
 447         long max_cpu;
 448         int ret;
 449
 450         ret = fio_cpuset_init(&td->o.cpumask);
 451         if (ret < 0) {
 452                 log_err("fio: cpuset_init failed\n");
 453                 td_verror(td, ret, "fio_cpuset_init");
 454                 return 1;
 455         }
 456
 457         max_cpu = cpus_online();
 458
 459         for (i = 0; i < sizeof(int) * 8; i++) {
 460                 if ((1 << i) & *val) {
 461                         if (i > max_cpu) {
 462                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 463                                                                 max_cpu);
 464                                 return 1;
 465                         }
 466                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 467                         fio_cpu_set(&td->o.cpumask, i);
 468                 }
 469         }
 470
 471         td->o.cpumask_set = 1;
 472         return 0;
 473 }
 474
 475 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 476                             const char *input)
 477 {
 478         char *cpu, *str, *p;
 479         long max_cpu;
 480         int ret = 0;
 481
 482         ret = fio_cpuset_init(mask);
 483         if (ret < 0) {
 484                 log_err("fio: cpuset_init failed\n");
 485                 td_verror(td, ret, "fio_cpuset_init");
 486                 return 1;
 487         }
 488
 489         p = str = strdup(input);
 490
 491         strip_blank_front(&str);
 492         strip_blank_end(str);
 493
 494         max_cpu = cpus_online();
 495
 496         while ((cpu = strsep(&str, ",")) != NULL) {
 497                 char *str2, *cpu2;
 498                 int icpu, icpu2;
 499
 500                 if (!strlen(cpu))
 501                         break;
 502
 503                 str2 = cpu;
 504                 icpu2 = -1;
 505                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 506                         if (!strlen(cpu2))
 507                                 break;
 508
 509                         icpu2 = atoi(cpu2);
 510                 }
 511
 512                 icpu = atoi(cpu);
 513                 if (icpu2 == -1)
 514                         icpu2 = icpu;
 515                 while (icpu <= icpu2) {
 516                         if (icpu >= FIO_MAX_CPUS) {
 517                                 log_err("fio: your OS only supports up to"
 518                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 519                                 ret = 1;
 520                                 break;
 521                         }
 522                         if (icpu > max_cpu) {
 523                                 log_err("fio: CPU %d too large (max=%ld)\n",
 524                                                         icpu, max_cpu);
 525                                 ret = 1;
 526                                 break;
 527                         }
 528
 529                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 530                         fio_cpu_set(mask, icpu);
 531                         icpu++;
 532                 }
 533                 if (ret)
 534                         break;
 535         }
 536
 537         free(p);
 538         if (!ret)
 539                 td->o.cpumask_set = 1;
 540         return ret;
 541 }
 542
 543 static int str_cpus_allowed_cb(void *data, const char *input)
 544 {
 545         struct thread_data *td = data;
 546         int ret;
 547
 548         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 549         if (!ret)
 550                 td->o.cpumask_set = 1;
 551
 552         return ret;
 553 }
 554
 555 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 556 {
 557         struct thread_data *td = data;
 558         int ret;
 559
 560         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 561         if (!ret)
 562                 td->o.verify_cpumask_set = 1;
 563
 564         return ret;
 565 }
 566 #endif
 567
 568 #ifdef FIO_HAVE_LIBNUMA
 569 static int str_numa_cpunodes_cb(void *data, char *input)
 570 {
 571         struct thread_data *td = data;
 572
 573         /* numa_parse_nodestring() parses a character string list
 574          * of nodes into a bit mask. The bit mask is allocated by
 575          * numa_allocate_nodemask(), so it should be freed by
 576          * numa_free_nodemask().
 577          */
 578         td->o.numa_cpunodesmask = numa_parse_nodestring(input);
 579         if (td->o.numa_cpunodesmask == NULL) {
 580                 log_err("fio: numa_parse_nodestring failed\n");
 581                 td_verror(td, 1, "str_numa_cpunodes_cb");
 582                 return 1;
 583         }
 584
 585         td->o.numa_cpumask_set = 1;
 586         return 0;
 587 }
 588
 589 static int str_numa_mpol_cb(void *data, char *input)
 590 {
 591         struct thread_data *td = data;
 592         const char * const policy_types[] =
 593                 { "default", "prefer", "bind", "interleave", "local" };
 594         int i;
 595
 596         char *nodelist = strchr(input, ':');
 597         if (nodelist) {
 598                 /* NUL-terminate mode */
 599                 *nodelist++ = '\0';
 600         }
 601
 602         for (i = 0; i <= MPOL_LOCAL; i++) {
 603                 if (!strcmp(input, policy_types[i])) {
 604                         td->o.numa_mem_mode = i;
 605                         break;
 606                 }
 607         }
 608         if (i > MPOL_LOCAL) {
 609                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 610                 goto out;
 611         }
 612
 613         switch (td->o.numa_mem_mode) {
 614         case MPOL_PREFERRED:
 615                 /*
 616                  * Insist on a nodelist of one node only
 617                  */
 618                 if (nodelist) {
 619                         char *rest = nodelist;
 620                         while (isdigit(*rest))
 621                                 rest++;
 622                         if (*rest) {
 623                                 log_err("fio: one node only for \'prefer\'\n");
 624                                 goto out;
 625                         }
 626                 } else {
 627                         log_err("fio: one node is needed for \'prefer\'\n");
 628                         goto out;
 629                 }
 630                 break;
 631         case MPOL_INTERLEAVE:
 632                 /*
 633                  * Default to online nodes with memory if no nodelist
 634                  */
 635                 if (!nodelist)
 636                         nodelist = strdup("all");
 637                 break;
 638         case MPOL_LOCAL:
 639         case MPOL_DEFAULT:
 640                 /*
 641                  * Don't allow a nodelist
 642                  */
 643                 if (nodelist) {
 644                         log_err("fio: NO nodelist for \'local\'\n");
 645                         goto out;
 646                 }
 647                 break;
 648         case MPOL_BIND:
 649                 /*
 650                  * Insist on a nodelist
 651                  */
 652                 if (!nodelist) {
 653                         log_err("fio: a nodelist is needed for \'bind\'\n");
 654                         goto out;
 655                 }
 656                 break;
 657         }
 658
 659
 660         /* numa_parse_nodestring() parses a character string list
 661          * of nodes into a bit mask. The bit mask is allocated by
 662          * numa_allocate_nodemask(), so it should be freed by
 663          * numa_free_nodemask().
 664          */
 665         switch (td->o.numa_mem_mode) {
 666         case MPOL_PREFERRED:
 667                 td->o.numa_mem_prefer_node = atoi(nodelist);
 668                 break;
 669         case MPOL_INTERLEAVE:
 670         case MPOL_BIND:
 671                 td->o.numa_memnodesmask = numa_parse_nodestring(nodelist);
 672                 if (td->o.numa_memnodesmask == NULL) {
 673                         log_err("fio: numa_parse_nodestring failed\n");
 674                         td_verror(td, 1, "str_numa_memnodes_cb");
 675                         return 1;
 676                 }
 677                 break;
 678         case MPOL_LOCAL:
 679         case MPOL_DEFAULT:
 680         default:
 681                 break;
 682         }
 683
 684         td->o.numa_memmask_set = 1;
 685         return 0;
 686
 687 out:
 688         return 1;
 689 }
 690 #endif
 691
 692 #ifdef FIO_HAVE_TRIM
 693 static int str_verify_trim_cb(void *data, unsigned long long *val)
 694 {
 695         struct thread_data *td = data;
 696
 697         td->o.trim_percentage = *val;
 698         return 0;
 699 }
 700 #endif
 701
 702 static int str_fst_cb(void *data, const char *str)
 703 {
 704         struct thread_data *td = data;
 705         char *nr = get_opt_postfix(str);
 706
 707         td->file_service_nr = 1;
 708         if (nr) {
 709                 td->file_service_nr = atoi(nr);
 710                 free(nr);
 711         }
 712
 713         return 0;
 714 }
 715
 716 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 717 static int str_sfr_cb(void *data, const char *str)
 718 {
 719         struct thread_data *td = data;
 720         char *nr = get_opt_postfix(str);
 721
 722         td->sync_file_range_nr = 1;
 723         if (nr) {
 724                 td->sync_file_range_nr = atoi(nr);
 725                 free(nr);
 726         }
 727
 728         return 0;
 729 }
 730 #endif
 731
 732 static int str_random_distribution_cb(void *data, const char *str)
 733 {
 734         struct thread_data *td = data;
 735         double val;
 736         char *nr;
 737
 738         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 739                 val = 1.1;
 740         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 741                 val = 0.2;
 742         else
 743                 return 0;
 744
 745         nr = get_opt_postfix(str);
 746         if (nr && !str_to_float(nr, &val)) {
 747                 log_err("fio: random postfix parsing failed\n");
 748                 free(nr);
 749                 return 1;
 750         }
 751
 752         free(nr);
 753
 754         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 755                 if (val == 1.00) {
 756                         log_err("fio: zipf theta must different than 1.0\n");
 757                         return 1;
 758                 }
 759                 td->o.zipf_theta = val;
 760         } else {
 761                 if (val <= 0.00 || val >= 1.00) {
 762                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 763                         return 1;
 764                 }
 765                 td->o.pareto_h = val;
 766         }
 767
 768         return 0;
 769 }
 770
 771 static int check_dir(struct thread_data *td, char *fname)
 772 {
 773 #if 0
 774         char file[PATH_MAX], *dir;
 775         int elen = 0;
 776
 777         if (td->o.directory) {
 778                 strcpy(file, td->o.directory);
 779                 strcat(file, "/");
 780                 elen = strlen(file);
 781         }
 782
 783         sprintf(file + elen, "%s", fname);
 784         dir = dirname(file);
 785
 786         {
 787         struct stat sb;
 788         /*
 789          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 790          * yet, so we can't do this check right here...
 791          */
 792         if (lstat(dir, &sb) < 0) {
 793                 int ret = errno;
 794
 795                 log_err("fio: %s is not a directory\n", dir);
 796                 td_verror(td, ret, "lstat");
 797                 return 1;
 798         }
 799
 800         if (!S_ISDIR(sb.st_mode)) {
 801                 log_err("fio: %s is not a directory\n", dir);
 802                 return 1;
 803         }
 804         }
 805 #endif
 806
 807         return 0;
 808 }
 809
 810 /*
 811  * Return next file in the string. Files are separated with ':'. If the ':'
 812  * is escaped with a '\', then that ':' is part of the filename and does not
 813  * indicate a new file.
 814  */
 815 static char *get_next_file_name(char **ptr)
 816 {
 817         char *str = *ptr;
 818         char *p, *start;
 819
 820         if (!str || !strlen(str))
 821                 return NULL;
 822
 823         start = str;
 824         do {
 825                 /*
 826                  * No colon, we are done
 827                  */
 828                 p = strchr(str, ':');
 829                 if (!p) {
 830                         *ptr = NULL;
 831                         break;
 832                 }
 833
 834                 /*
 835                  * We got a colon, but it's the first character. Skip and
 836                  * continue
 837                  */
 838                 if (p == start) {
 839                         str = ++start;
 840                         continue;
 841                 }
 842
 843                 if (*(p - 1) != '\\') {
 844                         *p = '\0';
 845                         *ptr = p + 1;
 846                         break;
 847                 }
 848
 849                 memmove(p - 1, p, strlen(p) + 1);
 850                 str = p;
 851         } while (1);
 852
 853         return start;
 854 }
 855
 856 static int str_filename_cb(void *data, const char *input)
 857 {
 858         struct thread_data *td = data;
 859         char *fname, *str, *p;
 860
 861         p = str = strdup(input);
 862
 863         strip_blank_front(&str);
 864         strip_blank_end(str);
 865
 866         if (!td->files_index)
 867                 td->o.nr_files = 0;
 868
 869         while ((fname = get_next_file_name(&str)) != NULL) {
 870                 if (!strlen(fname))
 871                         break;
 872                 if (check_dir(td, fname)) {
 873                         free(p);
 874                         return 1;
 875                 }
 876                 add_file(td, fname);
 877                 td->o.nr_files++;
 878         }
 879
 880         free(p);
 881         return 0;
 882 }
 883
 884 static int str_directory_cb(void *data, const char fio_unused *str)
 885 {
 886         struct thread_data *td = data;
 887         struct stat sb;
 888
 889         if (lstat(td->o.directory, &sb) < 0) {
 890                 int ret = errno;
 891
 892                 log_err("fio: %s is not a directory\n", td->o.directory);
 893                 td_verror(td, ret, "lstat");
 894                 return 1;
 895         }
 896         if (!S_ISDIR(sb.st_mode)) {
 897                 log_err("fio: %s is not a directory\n", td->o.directory);
 898                 return 1;
 899         }
 900
 901         return 0;
 902 }
 903
 904 static int str_opendir_cb(void *data, const char fio_unused *str)
 905 {
 906         struct thread_data *td = data;
 907
 908         if (!td->files_index)
 909                 td->o.nr_files = 0;
 910
 911         return add_dir_files(td, td->o.opendir);
 912 }
 913
 914 static int str_verify_offset_cb(void *data, unsigned long long *off)
 915 {
 916         struct thread_data *td = data;
 917
 918         if (*off && *off < sizeof(struct verify_header)) {
 919                 log_err("fio: verify_offset too small\n");
 920                 return 1;
 921         }
 922
 923         td->o.verify_offset = *off;
 924         return 0;
 925 }
 926
 927 static int str_verify_pattern_cb(void *data, const char *input)
 928 {
 929         struct thread_data *td = data;
 930         long off;
 931         int i = 0, j = 0, len, k, base = 10;
 932         char* loc1, * loc2;
 933
 934         loc1 = strstr(input, "0x");
 935         loc2 = strstr(input, "0X");
 936         if (loc1 || loc2)
 937                 base = 16;
 938         off = strtol(input, NULL, base);
 939         if (off != LONG_MAX || errno != ERANGE) {
 940                 while (off) {
 941                         td->o.verify_pattern[i] = off & 0xff;
 942                         off >>= 8;
 943                         i++;
 944                 }
 945         } else {
 946                 len = strlen(input);
 947                 k = len - 1;
 948                 if (base == 16) {
 949                         if (loc1)
 950                                 j = loc1 - input + 2;
 951                         else
 952                                 j = loc2 - input + 2;
 953                 } else
 954                         return 1;
 955                 if (len - j < MAX_PATTERN_SIZE * 2) {
 956                         while (k >= j) {
 957                                 off = converthexchartoint(input[k--]);
 958                                 if (k >= j)
 959                                         off += (converthexchartoint(input[k--])
 960                                                 * 16);
 961                                 td->o.verify_pattern[i++] = (char) off;
 962                         }
 963                 }
 964         }
 965
 966         /*
 967          * Fill the pattern all the way to the end. This greatly reduces
 968          * the number of memcpy's we have to do when verifying the IO.
 969          */
 970         while (i > 1 && i * 2 <= MAX_PATTERN_SIZE) {
 971                 memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
 972                 i *= 2;
 973         }
 974         if (i == 1) {
 975                 /*
 976                  * The code in verify_io_u_pattern assumes a single byte pattern
 977                  * fills the whole verify pattern buffer.
 978                  */
 979                 memset(td->o.verify_pattern, td->o.verify_pattern[0],
 980                        MAX_PATTERN_SIZE);
 981         }
 982
 983         td->o.verify_pattern_bytes = i;
 984
 985         /*
 986          * VERIFY_META could already be set
 987          */
 988         if (td->o.verify == VERIFY_NONE)
 989                 td->o.verify = VERIFY_PATTERN;
 990
 991         return 0;
 992 }
 993
 994 static int str_lockfile_cb(void *data, const char *str)
 995 {
 996         struct thread_data *td = data;
 997         char *nr = get_opt_postfix(str);
 998
 999         td->o.lockfile_batch = 1;
1000         if (nr) {
1001                 td->o.lockfile_batch = atoi(nr);
1002                 free(nr);
1003         }
1004
1005         return 0;
1006 }
1007
1008 static int str_write_bw_log_cb(void *data, const char *str)
1009 {
1010         struct thread_data *td = data;
1011
1012         if (str)
1013                 td->o.bw_log_file = strdup(str);
1014
1015         td->o.write_bw_log = 1;
1016         return 0;
1017 }
1018
1019 static int str_write_lat_log_cb(void *data, const char *str)
1020 {
1021         struct thread_data *td = data;
1022
1023         if (str)
1024                 td->o.lat_log_file = strdup(str);
1025
1026         td->o.write_lat_log = 1;
1027         return 0;
1028 }
1029
1030 static int str_write_iops_log_cb(void *data, const char *str)
1031 {
1032         struct thread_data *td = data;
1033
1034         if (str)
1035                 td->o.iops_log_file = strdup(str);
1036
1037         td->o.write_iops_log = 1;
1038         return 0;
1039 }
1040
1041 static int str_gtod_reduce_cb(void *data, int *il)
1042 {
1043         struct thread_data *td = data;
1044         int val = *il;
1045
1046         td->o.disable_lat = !!val;
1047         td->o.disable_clat = !!val;
1048         td->o.disable_slat = !!val;
1049         td->o.disable_bw = !!val;
1050         td->o.clat_percentiles = !val;
1051         if (val)
1052                 td->tv_cache_mask = 63;
1053
1054         return 0;
1055 }
1056
1057 static int str_gtod_cpu_cb(void *data, long long *il)
1058 {
1059         struct thread_data *td = data;
1060         int val = *il;
1061
1062         td->o.gtod_cpu = val;
1063         td->o.gtod_offload = 1;
1064         return 0;
1065 }
1066
1067 static int str_size_cb(void *data, unsigned long long *__val)
1068 {
1069         struct thread_data *td = data;
1070         unsigned long long v = *__val;
1071
1072         if (parse_is_percent(v)) {
1073                 td->o.size = 0;
1074                 td->o.size_percent = -1ULL - v;
1075         } else
1076                 td->o.size = v;
1077
1078         return 0;
1079 }
1080
1081 static int rw_verify(struct fio_option *o, void *data)
1082 {
1083         struct thread_data *td = data;
1084
1085         if (read_only && td_write(td)) {
1086                 log_err("fio: job <%s> has write bit set, but fio is in"
1087                         " read-only mode\n", td->o.name);
1088                 return 1;
1089         }
1090
1091         return 0;
1092 }
1093
1094 static int gtod_cpu_verify(struct fio_option *o, void *data)
1095 {
1096 #ifndef FIO_HAVE_CPU_AFFINITY
1097         struct thread_data *td = data;
1098
1099         if (td->o.gtod_cpu) {
1100                 log_err("fio: platform must support CPU affinity for"
1101                         "gettimeofday() offloading\n");
1102                 return 1;
1103         }
1104 #endif
1105
1106         return 0;
1107 }
1108
1109 static int kb_base_verify(struct fio_option *o, void *data)
1110 {
1111         struct thread_data *td = data;
1112
1113         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
1114                 log_err("fio: kb_base set to nonsensical value: %u\n",
1115                                 td->o.kb_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   = "kb_base",
1155                 .type   = FIO_OPT_INT,
1156                 .off1   = td_var_offset(kb_base),
1157                 .verify = kb_base_verify,
1158                 .prio   = 1,
1159                 .def    = "1024",
1160                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
1161         },
1162         {
1163                 .name   = "lockfile",
1164                 .type   = FIO_OPT_STR,
1165                 .cb     = str_lockfile_cb,
1166                 .off1   = td_var_offset(file_lock_mode),
1167                 .help   = "Lock file when doing IO to it",
1168                 .parent = "filename",
1169                 .def    = "none",
1170                 .posval = {
1171                           { .ival = "none",
1172                             .oval = FILE_LOCK_NONE,
1173                             .help = "No file locking",
1174                           },
1175                           { .ival = "exclusive",
1176                             .oval = FILE_LOCK_EXCLUSIVE,
1177                             .help = "Exclusive file lock",
1178                           },
1179                           {
1180                             .ival = "readwrite",
1181                             .oval = FILE_LOCK_READWRITE,
1182                             .help = "Read vs write lock",
1183                           },
1184                 },
1185         },
1186         {
1187                 .name   = "opendir",
1188                 .type   = FIO_OPT_STR_STORE,
1189                 .off1   = td_var_offset(opendir),
1190                 .cb     = str_opendir_cb,
1191                 .help   = "Recursively add files from this directory and down",
1192         },
1193         {
1194                 .name   = "rw",
1195                 .alias  = "readwrite",
1196                 .type   = FIO_OPT_STR,
1197                 .cb     = str_rw_cb,
1198                 .off1   = td_var_offset(td_ddir),
1199                 .help   = "IO direction",
1200                 .def    = "read",
1201                 .verify = rw_verify,
1202                 .posval = {
1203                           { .ival = "read",
1204                             .oval = TD_DDIR_READ,
1205                             .help = "Sequential read",
1206                           },
1207                           { .ival = "write",
1208                             .oval = TD_DDIR_WRITE,
1209                             .help = "Sequential write",
1210                           },
1211                           { .ival = "trim",
1212                             .oval = TD_DDIR_TRIM,
1213                             .help = "Sequential trim",
1214                           },
1215                           { .ival = "randread",
1216                             .oval = TD_DDIR_RANDREAD,
1217                             .help = "Random read",
1218                           },
1219                           { .ival = "randwrite",
1220                             .oval = TD_DDIR_RANDWRITE,
1221                             .help = "Random write",
1222                           },
1223                           { .ival = "randtrim",
1224                             .oval = TD_DDIR_RANDTRIM,
1225                             .help = "Random trim",
1226                           },
1227                           { .ival = "rw",
1228                             .oval = TD_DDIR_RW,
1229                             .help = "Sequential read and write mix",
1230                           },
1231                           { .ival = "readwrite",
1232                             .oval = TD_DDIR_RW,
1233                             .help = "Sequential read and write mix",
1234                           },
1235                           { .ival = "randrw",
1236                             .oval = TD_DDIR_RANDRW,
1237                             .help = "Random read and write mix"
1238                           },
1239                 },
1240         },
1241         {
1242                 .name   = "rw_sequencer",
1243                 .type   = FIO_OPT_STR,
1244                 .off1   = td_var_offset(rw_seq),
1245                 .help   = "IO offset generator modifier",
1246                 .def    = "sequential",
1247                 .posval = {
1248                           { .ival = "sequential",
1249                             .oval = RW_SEQ_SEQ,
1250                             .help = "Generate sequential offsets",
1251                           },
1252                           { .ival = "identical",
1253                             .oval = RW_SEQ_IDENT,
1254                             .help = "Generate identical offsets",
1255                           },
1256                 },
1257         },
1258
1259         {
1260                 .name   = "ioengine",
1261                 .type   = FIO_OPT_STR_STORE,
1262                 .off1   = td_var_offset(ioengine),
1263                 .help   = "IO engine to use",
1264                 .def    = FIO_PREFERRED_ENGINE,
1265                 .posval = {
1266                           { .ival = "sync",
1267                             .help = "Use read/write",
1268                           },
1269                           { .ival = "psync",
1270                             .help = "Use pread/pwrite",
1271                           },
1272                           { .ival = "vsync",
1273                             .help = "Use readv/writev",
1274                           },
1275 #ifdef FIO_HAVE_LIBAIO
1276                           { .ival = "libaio",
1277                             .help = "Linux native asynchronous IO",
1278                           },
1279 #endif
1280 #ifdef FIO_HAVE_POSIXAIO
1281                           { .ival = "posixaio",
1282                             .help = "POSIX asynchronous IO",
1283                           },
1284 #endif
1285 #ifdef FIO_HAVE_SOLARISAIO
1286                           { .ival = "solarisaio",
1287                             .help = "Solaris native asynchronous IO",
1288                           },
1289 #endif
1290 #ifdef FIO_HAVE_WINDOWSAIO
1291                           { .ival = "windowsaio",
1292                             .help = "Windows native asynchronous IO"
1293                           },
1294 #endif
1295                           { .ival = "mmap",
1296                             .help = "Memory mapped IO"
1297                           },
1298 #ifdef FIO_HAVE_SPLICE
1299                           { .ival = "splice",
1300                             .help = "splice/vmsplice based IO",
1301                           },
1302                           { .ival = "netsplice",
1303                             .help = "splice/vmsplice to/from the network",
1304                           },
1305 #endif
1306 #ifdef FIO_HAVE_SGIO
1307                           { .ival = "sg",
1308                             .help = "SCSI generic v3 IO",
1309                           },
1310 #endif
1311                           { .ival = "null",
1312                             .help = "Testing engine (no data transfer)",
1313                           },
1314                           { .ival = "net",
1315                             .help = "Network IO",
1316                           },
1317 #ifdef FIO_HAVE_SYSLET
1318                           { .ival = "syslet-rw",
1319                             .help = "syslet enabled async pread/pwrite IO",
1320                           },
1321 #endif
1322                           { .ival = "cpuio",
1323                             .help = "CPU cycle burner engine",
1324                           },
1325 #ifdef FIO_HAVE_GUASI
1326                           { .ival = "guasi",
1327                             .help = "GUASI IO engine",
1328                           },
1329 #endif
1330 #ifdef FIO_HAVE_BINJECT
1331                           { .ival = "binject",
1332                             .help = "binject direct inject block engine",
1333                           },
1334 #endif
1335 #ifdef FIO_HAVE_RDMA
1336                           { .ival = "rdma",
1337                             .help = "RDMA IO engine",
1338                           },
1339 #endif
1340 #ifdef FIO_HAVE_FUSION_AW
1341                           { .ival = "fusion-aw-sync",
1342                             .help = "Fusion-io atomic write engine",
1343                           },
1344 #endif
1345 #ifdef FIO_HAVE_E4_ENG
1346                           { .ival = "e4defrag",
1347                             .help = "ext4 defrag engine",
1348                           },
1349 #endif
1350 #ifdef FIO_HAVE_FALLOC_ENG
1351                           { .ival = "falloc",
1352                             .help = "fallocate() file based engine",
1353                           },
1354 #endif
1355                           { .ival = "external",
1356                             .help = "Load external engine (append name)",
1357                           },
1358                 },
1359         },
1360         {
1361                 .name   = "iodepth",
1362                 .type   = FIO_OPT_INT,
1363                 .off1   = td_var_offset(iodepth),
1364                 .help   = "Number of IO buffers to keep in flight",
1365                 .minval = 1,
1366                 .def    = "1",
1367         },
1368         {
1369                 .name   = "iodepth_batch",
1370                 .alias  = "iodepth_batch_submit",
1371                 .type   = FIO_OPT_INT,
1372                 .off1   = td_var_offset(iodepth_batch),
1373                 .help   = "Number of IO buffers to submit in one go",
1374                 .parent = "iodepth",
1375                 .minval = 1,
1376                 .def    = "1",
1377         },
1378         {
1379                 .name   = "iodepth_batch_complete",
1380                 .type   = FIO_OPT_INT,
1381                 .off1   = td_var_offset(iodepth_batch_complete),
1382                 .help   = "Number of IO buffers to retrieve in one go",
1383                 .parent = "iodepth",
1384                 .minval = 0,
1385                 .def    = "1",
1386         },
1387         {
1388                 .name   = "iodepth_low",
1389                 .type   = FIO_OPT_INT,
1390                 .off1   = td_var_offset(iodepth_low),
1391                 .help   = "Low water mark for queuing depth",
1392                 .parent = "iodepth",
1393         },
1394         {
1395                 .name   = "size",
1396                 .type   = FIO_OPT_STR_VAL,
1397                 .cb     = str_size_cb,
1398                 .help   = "Total size of device or files",
1399         },
1400         {
1401                 .name   = "fill_device",
1402                 .alias  = "fill_fs",
1403                 .type   = FIO_OPT_BOOL,
1404                 .off1   = td_var_offset(fill_device),
1405                 .help   = "Write until an ENOSPC error occurs",
1406                 .def    = "0",
1407         },
1408         {
1409                 .name   = "filesize",
1410                 .type   = FIO_OPT_STR_VAL,
1411                 .off1   = td_var_offset(file_size_low),
1412                 .off2   = td_var_offset(file_size_high),
1413                 .minval = 1,
1414                 .help   = "Size of individual files",
1415         },
1416         {
1417                 .name   = "offset",
1418                 .alias  = "fileoffset",
1419                 .type   = FIO_OPT_STR_VAL,
1420                 .off1   = td_var_offset(start_offset),
1421                 .help   = "Start IO from this offset",
1422                 .def    = "0",
1423         },
1424         {
1425                 .name   = "offset_increment",
1426                 .type   = FIO_OPT_STR_VAL,
1427                 .off1   = td_var_offset(offset_increment),
1428                 .help   = "What is the increment from one offset to the next",
1429                 .parent = "offset",
1430                 .def    = "0",
1431         },
1432         {
1433                 .name   = "bs",
1434                 .alias  = "blocksize",
1435                 .type   = FIO_OPT_INT,
1436                 .off1   = td_var_offset(bs[DDIR_READ]),
1437                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1438                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1439                 .minval = 1,
1440                 .help   = "Block size unit",
1441                 .def    = "4k",
1442                 .parent = "rw",
1443         },
1444         {
1445                 .name   = "ba",
1446                 .alias  = "blockalign",
1447                 .type   = FIO_OPT_INT,
1448                 .off1   = td_var_offset(ba[DDIR_READ]),
1449                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1450                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1451                 .minval = 1,
1452                 .help   = "IO block offset alignment",
1453                 .parent = "rw",
1454         },
1455         {
1456                 .name   = "bsrange",
1457                 .alias  = "blocksize_range",
1458                 .type   = FIO_OPT_RANGE,
1459                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1460                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1461                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1462                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1463                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1464                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1465                 .minval = 1,
1466                 .help   = "Set block size range (in more detail than bs)",
1467                 .parent = "rw",
1468         },
1469         {
1470                 .name   = "bssplit",
1471                 .type   = FIO_OPT_STR,
1472                 .cb     = str_bssplit_cb,
1473                 .help   = "Set a specific mix of block sizes",
1474                 .parent = "rw",
1475         },
1476         {
1477                 .name   = "bs_unaligned",
1478                 .alias  = "blocksize_unaligned",
1479                 .type   = FIO_OPT_STR_SET,
1480                 .off1   = td_var_offset(bs_unaligned),
1481                 .help   = "Don't sector align IO buffer sizes",
1482                 .parent = "rw",
1483         },
1484         {
1485                 .name   = "randrepeat",
1486                 .type   = FIO_OPT_BOOL,
1487                 .off1   = td_var_offset(rand_repeatable),
1488                 .help   = "Use repeatable random IO pattern",
1489                 .def    = "1",
1490                 .parent = "rw",
1491         },
1492         {
1493                 .name   = "use_os_rand",
1494                 .type   = FIO_OPT_BOOL,
1495                 .off1   = td_var_offset(use_os_rand),
1496                 .help   = "Set to use OS random generator",
1497                 .def    = "0",
1498                 .parent = "rw",
1499         },
1500         {
1501                 .name   = "norandommap",
1502                 .type   = FIO_OPT_STR_SET,
1503                 .off1   = td_var_offset(norandommap),
1504                 .help   = "Accept potential duplicate random blocks",
1505                 .parent = "rw",
1506         },
1507         {
1508                 .name   = "softrandommap",
1509                 .type   = FIO_OPT_BOOL,
1510                 .off1   = td_var_offset(softrandommap),
1511                 .help   = "Set norandommap if randommap allocation fails",
1512                 .parent = "norandommap",
1513                 .def    = "0",
1514         },
1515         {
1516                 .name   = "random_generator",
1517                 .type   = FIO_OPT_STR,
1518                 .off1   = td_var_offset(random_generator),
1519                 .help   = "Type of random number generator to use",
1520                 .def    = "tausworthe",
1521                 .posval = {
1522                           { .ival = "tausworthe",
1523                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1524                             .help = "Strong Tausworthe generator",
1525                           },
1526                           { .ival = "lfsr",
1527                             .oval = FIO_RAND_GEN_LFSR,
1528                             .help = "Variable length LFSR",
1529                           },
1530                 },
1531         },
1532         {
1533                 .name   = "random_distribution",
1534                 .type   = FIO_OPT_STR,
1535                 .off1   = td_var_offset(random_distribution),
1536                 .cb     = str_random_distribution_cb,
1537                 .help   = "Random offset distribution generator",
1538                 .def    = "random",
1539                 .posval = {
1540                           { .ival = "random",
1541                             .oval = FIO_RAND_DIST_RANDOM,
1542                             .help = "Completely random",
1543                           },
1544                           { .ival = "zipf",
1545                             .oval = FIO_RAND_DIST_ZIPF,
1546                             .help = "Zipf distribution",
1547                           },
1548                           { .ival = "pareto",
1549                             .oval = FIO_RAND_DIST_PARETO,
1550                             .help = "Pareto distribution",
1551                           },
1552                 },
1553         },
1554         {
1555                 .name   = "nrfiles",
1556                 .alias  = "nr_files",
1557                 .type   = FIO_OPT_INT,
1558                 .off1   = td_var_offset(nr_files),
1559                 .help   = "Split job workload between this number of files",
1560                 .def    = "1",
1561         },
1562         {
1563                 .name   = "openfiles",
1564                 .type   = FIO_OPT_INT,
1565                 .off1   = td_var_offset(open_files),
1566                 .help   = "Number of files to keep open at the same time",
1567         },
1568         {
1569                 .name   = "file_service_type",
1570                 .type   = FIO_OPT_STR,
1571                 .cb     = str_fst_cb,
1572                 .off1   = td_var_offset(file_service_type),
1573                 .help   = "How to select which file to service next",
1574                 .def    = "roundrobin",
1575                 .posval = {
1576                           { .ival = "random",
1577                             .oval = FIO_FSERVICE_RANDOM,
1578                             .help = "Choose a file at random",
1579                           },
1580                           { .ival = "roundrobin",
1581                             .oval = FIO_FSERVICE_RR,
1582                             .help = "Round robin select files",
1583                           },
1584                           { .ival = "sequential",
1585                             .oval = FIO_FSERVICE_SEQ,
1586                             .help = "Finish one file before moving to the next",
1587                           },
1588                 },
1589                 .parent = "nrfiles",
1590         },
1591 #ifdef FIO_HAVE_FALLOCATE
1592         {
1593                 .name   = "fallocate",
1594                 .type   = FIO_OPT_STR,
1595                 .off1   = td_var_offset(fallocate_mode),
1596                 .help   = "Whether pre-allocation is performed when laying out files",
1597                 .def    = "posix",
1598                 .posval = {
1599                           { .ival = "none",
1600                             .oval = FIO_FALLOCATE_NONE,
1601                             .help = "Do not pre-allocate space",
1602                           },
1603                           { .ival = "posix",
1604                             .oval = FIO_FALLOCATE_POSIX,
1605                             .help = "Use posix_fallocate()",
1606                           },
1607 #ifdef FIO_HAVE_LINUX_FALLOCATE
1608                           { .ival = "keep",
1609                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1610                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1611                           },
1612 #endif
1613                           /* Compatibility with former boolean values */
1614                           { .ival = "0",
1615                             .oval = FIO_FALLOCATE_NONE,
1616                             .help = "Alias for 'none'",
1617                           },
1618                           { .ival = "1",
1619                             .oval = FIO_FALLOCATE_POSIX,
1620                             .help = "Alias for 'posix'",
1621                           },
1622                 },
1623         },
1624 #endif  /* FIO_HAVE_FALLOCATE */
1625         {
1626                 .name   = "fadvise_hint",
1627                 .type   = FIO_OPT_BOOL,
1628                 .off1   = td_var_offset(fadvise_hint),
1629                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1630                 .def    = "1",
1631         },
1632         {
1633                 .name   = "fsync",
1634                 .type   = FIO_OPT_INT,
1635                 .off1   = td_var_offset(fsync_blocks),
1636                 .help   = "Issue fsync for writes every given number of blocks",
1637                 .def    = "0",
1638         },
1639         {
1640                 .name   = "fdatasync",
1641                 .type   = FIO_OPT_INT,
1642                 .off1   = td_var_offset(fdatasync_blocks),
1643                 .help   = "Issue fdatasync for writes every given number of blocks",
1644                 .def    = "0",
1645         },
1646         {
1647                 .name   = "write_barrier",
1648                 .type   = FIO_OPT_INT,
1649                 .off1   = td_var_offset(barrier_blocks),
1650                 .help   = "Make every Nth write a barrier write",
1651                 .def    = "0",
1652         },
1653 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1654         {
1655                 .name   = "sync_file_range",
1656                 .posval = {
1657                           { .ival = "wait_before",
1658                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1659                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1660                             .or   = 1,
1661                           },
1662                           { .ival = "write",
1663                             .oval = SYNC_FILE_RANGE_WRITE,
1664                             .help = "SYNC_FILE_RANGE_WRITE",
1665                             .or   = 1,
1666                           },
1667                           {
1668                             .ival = "wait_after",
1669                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1670                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1671                             .or   = 1,
1672                           },
1673                 },
1674                 .type   = FIO_OPT_STR_MULTI,
1675                 .cb     = str_sfr_cb,
1676                 .off1   = td_var_offset(sync_file_range),
1677                 .help   = "Use sync_file_range()",
1678         },
1679 #endif
1680         {
1681                 .name   = "direct",
1682                 .type   = FIO_OPT_BOOL,
1683                 .off1   = td_var_offset(odirect),
1684                 .help   = "Use O_DIRECT IO (negates buffered)",
1685                 .def    = "0",
1686         },
1687         {
1688                 .name   = "buffered",
1689                 .type   = FIO_OPT_BOOL,
1690                 .off1   = td_var_offset(odirect),
1691                 .neg    = 1,
1692                 .help   = "Use buffered IO (negates direct)",
1693                 .def    = "1",
1694         },
1695         {
1696                 .name   = "overwrite",
1697                 .type   = FIO_OPT_BOOL,
1698                 .off1   = td_var_offset(overwrite),
1699                 .help   = "When writing, set whether to overwrite current data",
1700                 .def    = "0",
1701         },
1702         {
1703                 .name   = "loops",
1704                 .type   = FIO_OPT_INT,
1705                 .off1   = td_var_offset(loops),
1706                 .help   = "Number of times to run the job",
1707                 .def    = "1",
1708         },
1709         {
1710                 .name   = "numjobs",
1711                 .type   = FIO_OPT_INT,
1712                 .off1   = td_var_offset(numjobs),
1713                 .help   = "Duplicate this job this many times",
1714                 .def    = "1",
1715         },
1716         {
1717                 .name   = "startdelay",
1718                 .type   = FIO_OPT_STR_VAL_TIME,
1719                 .off1   = td_var_offset(start_delay),
1720                 .help   = "Only start job when this period has passed",
1721                 .def    = "0",
1722         },
1723         {
1724                 .name   = "runtime",
1725                 .alias  = "timeout",
1726                 .type   = FIO_OPT_STR_VAL_TIME,
1727                 .off1   = td_var_offset(timeout),
1728                 .help   = "Stop workload when this amount of time has passed",
1729                 .def    = "0",
1730         },
1731         {
1732                 .name   = "time_based",
1733                 .type   = FIO_OPT_STR_SET,
1734                 .off1   = td_var_offset(time_based),
1735                 .help   = "Keep running until runtime/timeout is met",
1736         },
1737         {
1738                 .name   = "ramp_time",
1739                 .type   = FIO_OPT_STR_VAL_TIME,
1740                 .off1   = td_var_offset(ramp_time),
1741                 .help   = "Ramp up time before measuring performance",
1742         },
1743         {
1744                 .name   = "clocksource",
1745                 .type   = FIO_OPT_STR,
1746                 .cb     = fio_clock_source_cb,
1747                 .off1   = td_var_offset(clocksource),
1748                 .help   = "What type of timing source to use",
1749                 .posval = {
1750                           { .ival = "gettimeofday",
1751                             .oval = CS_GTOD,
1752                             .help = "Use gettimeofday(2) for timing",
1753                           },
1754                           { .ival = "clock_gettime",
1755                             .oval = CS_CGETTIME,
1756                             .help = "Use clock_gettime(2) for timing",
1757                           },
1758 #ifdef ARCH_HAVE_CPU_CLOCK
1759                           { .ival = "cpu",
1760                             .oval = CS_CPUCLOCK,
1761                             .help = "Use CPU private clock",
1762                           },
1763 #endif
1764                 },
1765         },
1766         {
1767                 .name   = "mem",
1768                 .alias  = "iomem",
1769                 .type   = FIO_OPT_STR,
1770                 .cb     = str_mem_cb,
1771                 .off1   = td_var_offset(mem_type),
1772                 .help   = "Backing type for IO buffers",
1773                 .def    = "malloc",
1774                 .posval = {
1775                           { .ival = "malloc",
1776                             .oval = MEM_MALLOC,
1777                             .help = "Use malloc(3) for IO buffers",
1778                           },
1779                           { .ival = "shm",
1780                             .oval = MEM_SHM,
1781                             .help = "Use shared memory segments for IO buffers",
1782                           },
1783 #ifdef FIO_HAVE_HUGETLB
1784                           { .ival = "shmhuge",
1785                             .oval = MEM_SHMHUGE,
1786                             .help = "Like shm, but use huge pages",
1787                           },
1788 #endif
1789                           { .ival = "mmap",
1790                             .oval = MEM_MMAP,
1791                             .help = "Use mmap(2) (file or anon) for IO buffers",
1792                           },
1793 #ifdef FIO_HAVE_HUGETLB
1794                           { .ival = "mmaphuge",
1795                             .oval = MEM_MMAPHUGE,
1796                             .help = "Like mmap, but use huge pages",
1797                           },
1798 #endif
1799                   },
1800         },
1801         {
1802                 .name   = "iomem_align",
1803                 .alias  = "mem_align",
1804                 .type   = FIO_OPT_INT,
1805                 .off1   = td_var_offset(mem_align),
1806                 .minval = 0,
1807                 .help   = "IO memory buffer offset alignment",
1808                 .def    = "0",
1809                 .parent = "iomem",
1810         },
1811         {
1812                 .name   = "verify",
1813                 .type   = FIO_OPT_STR,
1814                 .off1   = td_var_offset(verify),
1815                 .help   = "Verify data written",
1816                 .cb     = str_verify_cb,
1817                 .def    = "0",
1818                 .posval = {
1819                           { .ival = "0",
1820                             .oval = VERIFY_NONE,
1821                             .help = "Don't do IO verification",
1822                           },
1823                           { .ival = "md5",
1824                             .oval = VERIFY_MD5,
1825                             .help = "Use md5 checksums for verification",
1826                           },
1827                           { .ival = "crc64",
1828                             .oval = VERIFY_CRC64,
1829                             .help = "Use crc64 checksums for verification",
1830                           },
1831                           { .ival = "crc32",
1832                             .oval = VERIFY_CRC32,
1833                             .help = "Use crc32 checksums for verification",
1834                           },
1835                           { .ival = "crc32c-intel",
1836                             .oval = VERIFY_CRC32C,
1837                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1838                           },
1839                           { .ival = "crc32c",
1840                             .oval = VERIFY_CRC32C,
1841                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1842                           },
1843                           { .ival = "crc16",
1844                             .oval = VERIFY_CRC16,
1845                             .help = "Use crc16 checksums for verification",
1846                           },
1847                           { .ival = "crc7",
1848                             .oval = VERIFY_CRC7,
1849                             .help = "Use crc7 checksums for verification",
1850                           },
1851                           { .ival = "sha1",
1852                             .oval = VERIFY_SHA1,
1853                             .help = "Use sha1 checksums for verification",
1854                           },
1855                           { .ival = "sha256",
1856                             .oval = VERIFY_SHA256,
1857                             .help = "Use sha256 checksums for verification",
1858                           },
1859                           { .ival = "sha512",
1860                             .oval = VERIFY_SHA512,
1861                             .help = "Use sha512 checksums for verification",
1862                           },
1863                           { .ival = "meta",
1864                             .oval = VERIFY_META,
1865                             .help = "Use io information",
1866                           },
1867                           {
1868                             .ival = "null",
1869                             .oval = VERIFY_NULL,
1870                             .help = "Pretend to verify",
1871                           },
1872                 },
1873         },
1874         {
1875                 .name   = "do_verify",
1876                 .type   = FIO_OPT_BOOL,
1877                 .off1   = td_var_offset(do_verify),
1878                 .help   = "Run verification stage after write",
1879                 .def    = "1",
1880                 .parent = "verify",
1881         },
1882         {
1883                 .name   = "verifysort",
1884                 .type   = FIO_OPT_BOOL,
1885                 .off1   = td_var_offset(verifysort),
1886                 .help   = "Sort written verify blocks for read back",
1887                 .def    = "1",
1888                 .parent = "verify",
1889         },
1890         {
1891                 .name   = "verify_interval",
1892                 .type   = FIO_OPT_INT,
1893                 .off1   = td_var_offset(verify_interval),
1894                 .minval = 2 * sizeof(struct verify_header),
1895                 .help   = "Store verify buffer header every N bytes",
1896                 .parent = "verify",
1897         },
1898         {
1899                 .name   = "verify_offset",
1900                 .type   = FIO_OPT_INT,
1901                 .help   = "Offset verify header location by N bytes",
1902                 .def    = "0",
1903                 .cb     = str_verify_offset_cb,
1904                 .parent = "verify",
1905         },
1906         {
1907                 .name   = "verify_pattern",
1908                 .type   = FIO_OPT_STR,
1909                 .cb     = str_verify_pattern_cb,
1910                 .help   = "Fill pattern for IO buffers",
1911                 .parent = "verify",
1912         },
1913         {
1914                 .name   = "verify_fatal",
1915                 .type   = FIO_OPT_BOOL,
1916                 .off1   = td_var_offset(verify_fatal),
1917                 .def    = "0",
1918                 .help   = "Exit on a single verify failure, don't continue",
1919                 .parent = "verify",
1920         },
1921         {
1922                 .name   = "verify_dump",
1923                 .type   = FIO_OPT_BOOL,
1924                 .off1   = td_var_offset(verify_dump),
1925                 .def    = "0",
1926                 .help   = "Dump contents of good and bad blocks on failure",
1927                 .parent = "verify",
1928         },
1929         {
1930                 .name   = "verify_async",
1931                 .type   = FIO_OPT_INT,
1932                 .off1   = td_var_offset(verify_async),
1933                 .def    = "0",
1934                 .help   = "Number of async verifier threads to use",
1935                 .parent = "verify",
1936         },
1937         {
1938                 .name   = "verify_backlog",
1939                 .type   = FIO_OPT_STR_VAL,
1940                 .off1   = td_var_offset(verify_backlog),
1941                 .help   = "Verify after this number of blocks are written",
1942                 .parent = "verify",
1943         },
1944         {
1945                 .name   = "verify_backlog_batch",
1946                 .type   = FIO_OPT_INT,
1947                 .off1   = td_var_offset(verify_batch),
1948                 .help   = "Verify this number of IO blocks",
1949                 .parent = "verify",
1950         },
1951 #ifdef FIO_HAVE_CPU_AFFINITY
1952         {
1953                 .name   = "verify_async_cpus",
1954                 .type   = FIO_OPT_STR,
1955                 .cb     = str_verify_cpus_allowed_cb,
1956                 .help   = "Set CPUs allowed for async verify threads",
1957                 .parent = "verify_async",
1958         },
1959 #endif
1960 #ifdef FIO_HAVE_TRIM
1961         {
1962                 .name   = "trim_percentage",
1963                 .type   = FIO_OPT_INT,
1964                 .cb     = str_verify_trim_cb,
1965                 .maxval = 100,
1966                 .help   = "Number of verify blocks to discard/trim",
1967                 .parent = "verify",
1968                 .def    = "0",
1969         },
1970         {
1971                 .name   = "trim_verify_zero",
1972                 .type   = FIO_OPT_INT,
1973                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1974                 .off1   = td_var_offset(trim_zero),
1975                 .parent = "trim_percentage",
1976                 .def    = "1",
1977         },
1978         {
1979                 .name   = "trim_backlog",
1980                 .type   = FIO_OPT_STR_VAL,
1981                 .off1   = td_var_offset(trim_backlog),
1982                 .help   = "Trim after this number of blocks are written",
1983                 .parent = "trim_percentage",
1984         },
1985         {
1986                 .name   = "trim_backlog_batch",
1987                 .type   = FIO_OPT_INT,
1988                 .off1   = td_var_offset(trim_batch),
1989                 .help   = "Trim this number of IO blocks",
1990                 .parent = "trim_percentage",
1991         },
1992 #endif
1993         {
1994                 .name   = "write_iolog",
1995                 .type   = FIO_OPT_STR_STORE,
1996                 .off1   = td_var_offset(write_iolog_file),
1997                 .help   = "Store IO pattern to file",
1998         },
1999         {
2000                 .name   = "read_iolog",
2001                 .type   = FIO_OPT_STR_STORE,
2002                 .off1   = td_var_offset(read_iolog_file),
2003                 .help   = "Playback IO pattern from file",
2004         },
2005         {
2006                 .name   = "replay_no_stall",
2007                 .type   = FIO_OPT_INT,
2008                 .off1   = td_var_offset(no_stall),
2009                 .def    = "0",
2010                 .parent = "read_iolog",
2011                 .help   = "Playback IO pattern file as fast as possible without stalls",
2012         },
2013         {
2014                 .name   = "replay_redirect",
2015                 .type   = FIO_OPT_STR_STORE,
2016                 .off1   = td_var_offset(replay_redirect),
2017                 .parent = "read_iolog",
2018                 .help   = "Replay all I/O onto this device, regardless of trace device",
2019         },
2020         {
2021                 .name   = "exec_prerun",
2022                 .type   = FIO_OPT_STR_STORE,
2023                 .off1   = td_var_offset(exec_prerun),
2024                 .help   = "Execute this file prior to running job",
2025         },
2026         {
2027                 .name   = "exec_postrun",
2028                 .type   = FIO_OPT_STR_STORE,
2029                 .off1   = td_var_offset(exec_postrun),
2030                 .help   = "Execute this file after running job",
2031         },
2032 #ifdef FIO_HAVE_IOSCHED_SWITCH
2033         {
2034                 .name   = "ioscheduler",
2035                 .type   = FIO_OPT_STR_STORE,
2036                 .off1   = td_var_offset(ioscheduler),
2037                 .help   = "Use this IO scheduler on the backing device",
2038         },
2039 #endif
2040         {
2041                 .name   = "zonesize",
2042                 .type   = FIO_OPT_STR_VAL,
2043                 .off1   = td_var_offset(zone_size),
2044                 .help   = "Amount of data to read per zone",
2045                 .def    = "0",
2046         },
2047         {
2048                 .name   = "zonerange",
2049                 .type   = FIO_OPT_STR_VAL,
2050                 .off1   = td_var_offset(zone_range),
2051                 .help   = "Give size of an IO zone",
2052                 .def    = "0",
2053         },
2054         {
2055                 .name   = "zoneskip",
2056                 .type   = FIO_OPT_STR_VAL,
2057                 .off1   = td_var_offset(zone_skip),
2058                 .help   = "Space between IO zones",
2059                 .def    = "0",
2060         },
2061         {
2062                 .name   = "lockmem",
2063                 .type   = FIO_OPT_STR_VAL,
2064                 .cb     = str_lockmem_cb,
2065                 .help   = "Lock down this amount of memory",
2066                 .def    = "0",
2067         },
2068         {
2069                 .name   = "rwmixread",
2070                 .type   = FIO_OPT_INT,
2071                 .cb     = str_rwmix_read_cb,
2072                 .maxval = 100,
2073                 .help   = "Percentage of mixed workload that is reads",
2074                 .def    = "50",
2075         },
2076         {
2077                 .name   = "rwmixwrite",
2078                 .type   = FIO_OPT_INT,
2079                 .cb     = str_rwmix_write_cb,
2080                 .maxval = 100,
2081                 .help   = "Percentage of mixed workload that is writes",
2082                 .def    = "50",
2083         },
2084         {
2085                 .name   = "rwmixcycle",
2086                 .type   = FIO_OPT_DEPRECATED,
2087         },
2088         {
2089                 .name   = "nice",
2090                 .type   = FIO_OPT_INT,
2091                 .off1   = td_var_offset(nice),
2092                 .help   = "Set job CPU nice value",
2093                 .minval = -19,
2094                 .maxval = 20,
2095                 .def    = "0",
2096         },
2097 #ifdef FIO_HAVE_IOPRIO
2098         {
2099                 .name   = "prio",
2100                 .type   = FIO_OPT_INT,
2101                 .cb     = str_prio_cb,
2102                 .help   = "Set job IO priority value",
2103                 .minval = 0,
2104                 .maxval = 7,
2105         },
2106         {
2107                 .name   = "prioclass",
2108                 .type   = FIO_OPT_INT,
2109                 .cb     = str_prioclass_cb,
2110                 .help   = "Set job IO priority class",
2111                 .minval = 0,
2112                 .maxval = 3,
2113         },
2114 #endif
2115         {
2116                 .name   = "thinktime",
2117                 .type   = FIO_OPT_INT,
2118                 .off1   = td_var_offset(thinktime),
2119                 .help   = "Idle time between IO buffers (usec)",
2120                 .def    = "0",
2121         },
2122         {
2123                 .name   = "thinktime_spin",
2124                 .type   = FIO_OPT_INT,
2125                 .off1   = td_var_offset(thinktime_spin),
2126                 .help   = "Start think time by spinning this amount (usec)",
2127                 .def    = "0",
2128                 .parent = "thinktime",
2129         },
2130         {
2131                 .name   = "thinktime_blocks",
2132                 .type   = FIO_OPT_INT,
2133                 .off1   = td_var_offset(thinktime_blocks),
2134                 .help   = "IO buffer period between 'thinktime'",
2135                 .def    = "1",
2136                 .parent = "thinktime",
2137         },
2138         {
2139                 .name   = "rate",
2140                 .type   = FIO_OPT_INT,
2141                 .off1   = td_var_offset(rate[DDIR_READ]),
2142                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2143                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2144                 .help   = "Set bandwidth rate",
2145         },
2146         {
2147                 .name   = "ratemin",
2148                 .type   = FIO_OPT_INT,
2149                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2150                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2151                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2152                 .help   = "Job must meet this rate or it will be shutdown",
2153                 .parent = "rate",
2154         },
2155         {
2156                 .name   = "rate_iops",
2157                 .type   = FIO_OPT_INT,
2158                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2159                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2160                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2161                 .help   = "Limit IO used to this number of IO operations/sec",
2162         },
2163         {
2164                 .name   = "rate_iops_min",
2165                 .type   = FIO_OPT_INT,
2166                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2167                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2168                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2169                 .help   = "Job must meet this rate or it will be shut down",
2170                 .parent = "rate_iops",
2171         },
2172         {
2173                 .name   = "ratecycle",
2174                 .type   = FIO_OPT_INT,
2175                 .off1   = td_var_offset(ratecycle),
2176                 .help   = "Window average for rate limits (msec)",
2177                 .def    = "1000",
2178                 .parent = "rate",
2179         },
2180         {
2181                 .name   = "max_latency",
2182                 .type   = FIO_OPT_INT,
2183                 .off1   = td_var_offset(max_latency),
2184                 .help   = "Maximum tolerated IO latency (usec)",
2185         },
2186         {
2187                 .name   = "invalidate",
2188                 .type   = FIO_OPT_BOOL,
2189                 .off1   = td_var_offset(invalidate_cache),
2190                 .help   = "Invalidate buffer/page cache prior to running job",
2191                 .def    = "1",
2192         },
2193         {
2194                 .name   = "sync",
2195                 .type   = FIO_OPT_BOOL,
2196                 .off1   = td_var_offset(sync_io),
2197                 .help   = "Use O_SYNC for buffered writes",
2198                 .def    = "0",
2199                 .parent = "buffered",
2200         },
2201         {
2202                 .name   = "bwavgtime",
2203                 .type   = FIO_OPT_INT,
2204                 .off1   = td_var_offset(bw_avg_time),
2205                 .help   = "Time window over which to calculate bandwidth"
2206                           " (msec)",
2207                 .def    = "500",
2208                 .parent = "write_bw_log",
2209         },
2210         {
2211                 .name   = "iopsavgtime",
2212                 .type   = FIO_OPT_INT,
2213                 .off1   = td_var_offset(iops_avg_time),
2214                 .help   = "Time window over which to calculate IOPS (msec)",
2215                 .def    = "500",
2216                 .parent = "write_iops_log",
2217         },
2218         {
2219                 .name   = "create_serialize",
2220                 .type   = FIO_OPT_BOOL,
2221                 .off1   = td_var_offset(create_serialize),
2222                 .help   = "Serialize creating of job files",
2223                 .def    = "1",
2224         },
2225         {
2226                 .name   = "create_fsync",
2227                 .type   = FIO_OPT_BOOL,
2228                 .off1   = td_var_offset(create_fsync),
2229                 .help   = "fsync file after creation",
2230                 .def    = "1",
2231         },
2232         {
2233                 .name   = "create_on_open",
2234                 .type   = FIO_OPT_BOOL,
2235                 .off1   = td_var_offset(create_on_open),
2236                 .help   = "Create files when they are opened for IO",
2237                 .def    = "0",
2238         },
2239         {
2240                 .name   = "create_only",
2241                 .type   = FIO_OPT_BOOL,
2242                 .off1   = td_var_offset(create_only),
2243                 .help   = "Only perform file creation phase",
2244                 .def    = "0",
2245         },
2246         {
2247                 .name   = "pre_read",
2248                 .type   = FIO_OPT_BOOL,
2249                 .off1   = td_var_offset(pre_read),
2250                 .help   = "Pre-read files before starting official testing",
2251                 .def    = "0",
2252         },
2253         {
2254                 .name   = "cpuload",
2255                 .type   = FIO_OPT_INT,
2256                 .off1   = td_var_offset(cpuload),
2257                 .help   = "Use this percentage of CPU",
2258         },
2259         {
2260                 .name   = "cpuchunks",
2261                 .type   = FIO_OPT_INT,
2262                 .off1   = td_var_offset(cpucycle),
2263                 .help   = "Length of the CPU burn cycles (usecs)",
2264                 .def    = "50000",
2265                 .parent = "cpuload",
2266         },
2267 #ifdef FIO_HAVE_CPU_AFFINITY
2268         {
2269                 .name   = "cpumask",
2270                 .type   = FIO_OPT_INT,
2271                 .cb     = str_cpumask_cb,
2272                 .help   = "CPU affinity mask",
2273         },
2274         {
2275                 .name   = "cpus_allowed",
2276                 .type   = FIO_OPT_STR,
2277                 .cb     = str_cpus_allowed_cb,
2278                 .help   = "Set CPUs allowed",
2279         },
2280 #endif
2281 #ifdef FIO_HAVE_LIBNUMA
2282         {
2283                 .name   = "numa_cpu_nodes",
2284                 .type   = FIO_OPT_STR,
2285                 .cb     = str_numa_cpunodes_cb,
2286                 .help   = "NUMA CPU nodes bind",
2287         },
2288         {
2289                 .name   = "numa_mem_policy",
2290                 .type   = FIO_OPT_STR,
2291                 .cb     = str_numa_mpol_cb,
2292                 .help   = "NUMA memory policy setup",
2293         },
2294 #endif
2295         {
2296                 .name   = "end_fsync",
2297                 .type   = FIO_OPT_BOOL,
2298                 .off1   = td_var_offset(end_fsync),
2299                 .help   = "Include fsync at the end of job",
2300                 .def    = "0",
2301         },
2302         {
2303                 .name   = "fsync_on_close",
2304                 .type   = FIO_OPT_BOOL,
2305                 .off1   = td_var_offset(fsync_on_close),
2306                 .help   = "fsync files on close",
2307                 .def    = "0",
2308         },
2309         {
2310                 .name   = "unlink",
2311                 .type   = FIO_OPT_BOOL,
2312                 .off1   = td_var_offset(unlink),
2313                 .help   = "Unlink created files after job has completed",
2314                 .def    = "0",
2315         },
2316         {
2317                 .name   = "exitall",
2318                 .type   = FIO_OPT_STR_SET,
2319                 .cb     = str_exitall_cb,
2320                 .help   = "Terminate all jobs when one exits",
2321         },
2322         {
2323                 .name   = "stonewall",
2324                 .alias  = "wait_for_previous",
2325                 .type   = FIO_OPT_STR_SET,
2326                 .off1   = td_var_offset(stonewall),
2327                 .help   = "Insert a hard barrier between this job and previous",
2328         },
2329         {
2330                 .name   = "new_group",
2331                 .type   = FIO_OPT_STR_SET,
2332                 .off1   = td_var_offset(new_group),
2333                 .help   = "Mark the start of a new group (for reporting)",
2334         },
2335         {
2336                 .name   = "thread",
2337                 .type   = FIO_OPT_STR_SET,
2338                 .off1   = td_var_offset(use_thread),
2339                 .help   = "Use threads instead of forks",
2340         },
2341         {
2342                 .name   = "write_bw_log",
2343                 .type   = FIO_OPT_STR,
2344                 .off1   = td_var_offset(write_bw_log),
2345                 .cb     = str_write_bw_log_cb,
2346                 .help   = "Write log of bandwidth during run",
2347         },
2348         {
2349                 .name   = "write_lat_log",
2350                 .type   = FIO_OPT_STR,
2351                 .off1   = td_var_offset(write_lat_log),
2352                 .cb     = str_write_lat_log_cb,
2353                 .help   = "Write log of latency during run",
2354         },
2355         {
2356                 .name   = "write_iops_log",
2357                 .type   = FIO_OPT_STR,
2358                 .off1   = td_var_offset(write_iops_log),
2359                 .cb     = str_write_iops_log_cb,
2360                 .help   = "Write log of IOPS during run",
2361         },
2362         {
2363                 .name   = "log_avg_msec",
2364                 .type   = FIO_OPT_INT,
2365                 .off1   = td_var_offset(log_avg_msec),
2366                 .help   = "Average bw/iops/lat logs over this period of time",
2367                 .def    = "0",
2368         },
2369         {
2370                 .name   = "hugepage-size",
2371                 .type   = FIO_OPT_INT,
2372                 .off1   = td_var_offset(hugepage_size),
2373                 .help   = "When using hugepages, specify size of each page",
2374                 .def    = __fio_stringify(FIO_HUGE_PAGE),
2375         },
2376         {
2377                 .name   = "group_reporting",
2378                 .type   = FIO_OPT_STR_SET,
2379                 .off1   = td_var_offset(group_reporting),
2380                 .help   = "Do reporting on a per-group basis",
2381         },
2382         {
2383                 .name   = "zero_buffers",
2384                 .type   = FIO_OPT_STR_SET,
2385                 .off1   = td_var_offset(zero_buffers),
2386                 .help   = "Init IO buffers to all zeroes",
2387         },
2388         {
2389                 .name   = "refill_buffers",
2390                 .type   = FIO_OPT_STR_SET,
2391                 .off1   = td_var_offset(refill_buffers),
2392                 .help   = "Refill IO buffers on every IO submit",
2393         },
2394         {
2395                 .name   = "scramble_buffers",
2396                 .type   = FIO_OPT_BOOL,
2397                 .off1   = td_var_offset(scramble_buffers),
2398                 .help   = "Slightly scramble buffers on every IO submit",
2399                 .def    = "1",
2400         },
2401         {
2402                 .name   = "buffer_compress_percentage",
2403                 .type   = FIO_OPT_INT,
2404                 .off1   = td_var_offset(compress_percentage),
2405                 .maxval = 100,
2406                 .minval = 1,
2407                 .help   = "How compressible the buffer is (approximately)",
2408         },
2409         {
2410                 .name   = "buffer_compress_chunk",
2411                 .type   = FIO_OPT_INT,
2412                 .off1   = td_var_offset(compress_chunk),
2413                 .parent = "buffer_compress_percentage",
2414                 .help   = "Size of compressible region in buffer",
2415         },
2416         {
2417                 .name   = "clat_percentiles",
2418                 .type   = FIO_OPT_BOOL,
2419                 .off1   = td_var_offset(clat_percentiles),
2420                 .help   = "Enable the reporting of completion latency percentiles",
2421                 .def    = "1",
2422         },
2423         {
2424                 .name   = "percentile_list",
2425                 .type   = FIO_OPT_FLOAT_LIST,
2426                 .off1   = td_var_offset(percentile_list),
2427                 .off2   = td_var_offset(overwrite_plist),
2428                 .help   = "Specify a custom list of percentiles to report",
2429                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2430                 .minfp  = 0.0,
2431                 .maxfp  = 100.0,
2432         },
2433
2434 #ifdef FIO_HAVE_DISK_UTIL
2435         {
2436                 .name   = "disk_util",
2437                 .type   = FIO_OPT_BOOL,
2438                 .off1   = td_var_offset(do_disk_util),
2439                 .help   = "Log disk utilization statistics",
2440                 .def    = "1",
2441         },
2442 #endif
2443         {
2444                 .name   = "gtod_reduce",
2445                 .type   = FIO_OPT_BOOL,
2446                 .help   = "Greatly reduce number of gettimeofday() calls",
2447                 .cb     = str_gtod_reduce_cb,
2448                 .def    = "0",
2449         },
2450         {
2451                 .name   = "disable_lat",
2452                 .type   = FIO_OPT_BOOL,
2453                 .off1   = td_var_offset(disable_lat),
2454                 .help   = "Disable latency numbers",
2455                 .parent = "gtod_reduce",
2456                 .def    = "0",
2457         },
2458         {
2459                 .name   = "disable_clat",
2460                 .type   = FIO_OPT_BOOL,
2461                 .off1   = td_var_offset(disable_clat),
2462                 .help   = "Disable completion latency numbers",
2463                 .parent = "gtod_reduce",
2464                 .def    = "0",
2465         },
2466         {
2467                 .name   = "disable_slat",
2468                 .type   = FIO_OPT_BOOL,
2469                 .off1   = td_var_offset(disable_slat),
2470                 .help   = "Disable submission latency numbers",
2471                 .parent = "gtod_reduce",
2472                 .def    = "0",
2473         },
2474         {
2475                 .name   = "disable_bw_measurement",
2476                 .type   = FIO_OPT_BOOL,
2477                 .off1   = td_var_offset(disable_bw),
2478                 .help   = "Disable bandwidth logging",
2479                 .parent = "gtod_reduce",
2480                 .def    = "0",
2481         },
2482         {
2483                 .name   = "gtod_cpu",
2484                 .type   = FIO_OPT_INT,
2485                 .cb     = str_gtod_cpu_cb,
2486                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2487                 .verify = gtod_cpu_verify,
2488         },
2489         {
2490                 .name   = "continue_on_error",
2491                 .type   = FIO_OPT_STR,
2492                 .off1   = td_var_offset(continue_on_error),
2493                 .help   = "Continue on non-fatal errors during IO",
2494                 .def    = "none",
2495                 .posval = {
2496                           { .ival = "none",
2497                             .oval = ERROR_TYPE_NONE,
2498                             .help = "Exit when an error is encountered",
2499                           },
2500                           { .ival = "read",
2501                             .oval = ERROR_TYPE_READ,
2502                             .help = "Continue on read errors only",
2503                           },
2504                           { .ival = "write",
2505                             .oval = ERROR_TYPE_WRITE,
2506                             .help = "Continue on write errors only",
2507                           },
2508                           { .ival = "io",
2509                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2510                             .help = "Continue on any IO errors",
2511                           },
2512                           { .ival = "verify",
2513                             .oval = ERROR_TYPE_VERIFY,
2514                             .help = "Continue on verify errors only",
2515                           },
2516                           { .ival = "all",
2517                             .oval = ERROR_TYPE_ANY,
2518                             .help = "Continue on all io and verify errors",
2519                           },
2520                           { .ival = "0",
2521                             .oval = ERROR_TYPE_NONE,
2522                             .help = "Alias for 'none'",
2523                           },
2524                           { .ival = "1",
2525                             .oval = ERROR_TYPE_ANY,
2526                             .help = "Alias for 'all'",
2527                           },
2528                 },
2529         },
2530         {
2531                 .name   = "ignore_error",
2532                 .type   = FIO_OPT_STR,
2533                 .cb     = str_ignore_error_cb,
2534                 .help   = "Set a specific list of errors to ignore",
2535                 .parent = "rw",
2536         },
2537         {
2538                 .name   = "error_dump",
2539                 .type   = FIO_OPT_BOOL,
2540                 .off1   = td_var_offset(error_dump),
2541                 .def    = "0",
2542                 .help   = "Dump info on each error",
2543         },
2544
2545         {
2546                 .name   = "profile",
2547                 .type   = FIO_OPT_STR_STORE,
2548                 .off1   = td_var_offset(profile),
2549                 .help   = "Select a specific builtin performance test",
2550         },
2551         {
2552                 .name   = "cgroup",
2553                 .type   = FIO_OPT_STR_STORE,
2554                 .off1   = td_var_offset(cgroup),
2555                 .help   = "Add job to cgroup of this name",
2556         },
2557         {
2558                 .name   = "cgroup_weight",
2559                 .type   = FIO_OPT_INT,
2560                 .off1   = td_var_offset(cgroup_weight),
2561                 .help   = "Use given weight for cgroup",
2562                 .minval = 100,
2563                 .maxval = 1000,
2564         },
2565         {
2566                 .name   = "cgroup_nodelete",
2567                 .type   = FIO_OPT_BOOL,
2568                 .off1   = td_var_offset(cgroup_nodelete),
2569                 .help   = "Do not delete cgroups after job completion",
2570                 .def    = "0",
2571         },
2572         {
2573                 .name   = "uid",
2574                 .type   = FIO_OPT_INT,
2575                 .off1   = td_var_offset(uid),
2576                 .help   = "Run job with this user ID",
2577         },
2578         {
2579                 .name   = "gid",
2580                 .type   = FIO_OPT_INT,
2581                 .off1   = td_var_offset(gid),
2582                 .help   = "Run job with this group ID",
2583         },
2584         {
2585                 .name   = "flow_id",
2586                 .type   = FIO_OPT_INT,
2587                 .off1   = td_var_offset(flow_id),
2588                 .help   = "The flow index ID to use",
2589                 .def    = "0",
2590         },
2591         {
2592                 .name   = "flow",
2593                 .type   = FIO_OPT_INT,
2594                 .off1   = td_var_offset(flow),
2595                 .help   = "Weight for flow control of this job",
2596                 .parent = "flow_id",
2597                 .def    = "0",
2598         },
2599         {
2600                 .name   = "flow_watermark",
2601                 .type   = FIO_OPT_INT,
2602                 .off1   = td_var_offset(flow_watermark),
2603                 .help   = "High watermark for flow control. This option"
2604                         " should be set to the same value for all threads"
2605                         " with non-zero flow.",
2606                 .parent = "flow_id",
2607                 .def    = "1024",
2608         },
2609         {
2610                 .name   = "flow_sleep",
2611                 .type   = FIO_OPT_INT,
2612                 .off1   = td_var_offset(flow_sleep),
2613                 .help   = "How many microseconds to sleep after being held"
2614                         " back by the flow control mechanism",
2615                 .parent = "flow_id",
2616                 .def    = "0",
2617         },
2618         {
2619                 .name = NULL,
2620         },
2621 };
2622
2623 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2624                         const char *name, int val)
2625 {
2626         lopt->name = (char *) name;
2627         lopt->val = val;
2628         if (o->type == FIO_OPT_STR_SET)
2629                 lopt->has_arg = no_argument;
2630         else
2631                 lopt->has_arg = required_argument;
2632 }
2633
2634 static void options_to_lopts(struct fio_option *opts,
2635                               struct option *long_options,
2636                               int i, int option_type)
2637 {
2638         struct fio_option *o = &opts[0];
2639         while (o->name) {
2640                 add_to_lopt(&long_options[i], o, o->name, option_type);
2641                 if (o->alias) {
2642                         i++;
2643                         add_to_lopt(&long_options[i], o, o->alias, option_type);
2644                 }
2645
2646                 i++;
2647                 o++;
2648                 assert(i < FIO_NR_OPTIONS);
2649         }
2650 }
2651
2652 void fio_options_set_ioengine_opts(struct option *long_options,
2653                                    struct thread_data *td)
2654 {
2655         unsigned int i;
2656
2657         i = 0;
2658         while (long_options[i].name) {
2659                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2660                         memset(&long_options[i], 0, sizeof(*long_options));
2661                         break;
2662                 }
2663                 i++;
2664         }
2665
2666         /*
2667          * Just clear out the prior ioengine options.
2668          */
2669         if (!td || !td->eo)
2670                 return;
2671
2672         options_to_lopts(td->io_ops->options, long_options, i,
2673                          FIO_GETOPT_IOENGINE);
2674 }
2675
2676 void fio_options_dup_and_init(struct option *long_options)
2677 {
2678         unsigned int i;
2679
2680         options_init(options);
2681
2682         i = 0;
2683         while (long_options[i].name)
2684                 i++;
2685
2686         options_to_lopts(options, long_options, i, FIO_GETOPT_JOB);
2687 }
2688
2689 struct fio_keyword {
2690         const char *word;
2691         const char *desc;
2692         char *replace;
2693 };
2694
2695 static struct fio_keyword fio_keywords[] = {
2696         {
2697                 .word   = "$pagesize",
2698                 .desc   = "Page size in the system",
2699         },
2700         {
2701                 .word   = "$mb_memory",
2702                 .desc   = "Megabytes of memory online",
2703         },
2704         {
2705                 .word   = "$ncpus",
2706                 .desc   = "Number of CPUs online in the system",
2707         },
2708         {
2709                 .word   = NULL,
2710         },
2711 };
2712
2713 void fio_keywords_init(void)
2714 {
2715         unsigned long long mb_memory;
2716         char buf[128];
2717         long l;
2718
2719         sprintf(buf, "%lu", (unsigned long) page_size);
2720         fio_keywords[0].replace = strdup(buf);
2721
2722         mb_memory = os_phys_mem() / (1024 * 1024);
2723         sprintf(buf, "%llu", mb_memory);
2724         fio_keywords[1].replace = strdup(buf);
2725
2726         l = cpus_online();
2727         sprintf(buf, "%lu", l);
2728         fio_keywords[2].replace = strdup(buf);
2729 }
2730
2731 #define BC_APP          "bc"
2732
2733 static char *bc_calc(char *str)
2734 {
2735         char buf[128], *tmp;
2736         FILE *f;
2737         int ret;
2738
2739         /*
2740          * No math, just return string
2741          */
2742         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2743              !strchr(str, '/')) || strchr(str, '\''))
2744                 return str;
2745
2746         /*
2747          * Split option from value, we only need to calculate the value
2748          */
2749         tmp = strchr(str, '=');
2750         if (!tmp)
2751                 return str;
2752
2753         tmp++;
2754
2755         /*
2756          * Prevent buffer overflows; such a case isn't reasonable anyway
2757          */
2758         if (strlen(str) >= 128 || strlen(tmp) > 100)
2759                 return str;
2760
2761         sprintf(buf, "which %s > /dev/null", BC_APP);
2762         if (system(buf)) {
2763                 log_err("fio: bc is needed for performing math\n");
2764                 return NULL;
2765         }
2766
2767         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2768         f = popen(buf, "r");
2769         if (!f) {
2770                 return NULL;
2771         }
2772
2773         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2774         if (ret <= 0) {
2775                 return NULL;
2776         }
2777
2778         pclose(f);
2779         buf[(tmp - str) + ret - 1] = '\0';
2780         memcpy(buf, str, tmp - str);
2781         free(str);
2782         return strdup(buf);
2783 }
2784
2785 /*
2786  * Return a copy of the input string with substrings of the form ${VARNAME}
2787  * substituted with the value of the environment variable VARNAME.  The
2788  * substitution always occurs, even if VARNAME is empty or the corresponding
2789  * environment variable undefined.
2790  */
2791 static char *option_dup_subs(const char *opt)
2792 {
2793         char out[OPT_LEN_MAX+1];
2794         char in[OPT_LEN_MAX+1];
2795         char *outptr = out;
2796         char *inptr = in;
2797         char *ch1, *ch2, *env;
2798         ssize_t nchr = OPT_LEN_MAX;
2799         size_t envlen;
2800
2801         if (strlen(opt) + 1 > OPT_LEN_MAX) {
2802                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2803                 return NULL;
2804         }
2805
2806         in[OPT_LEN_MAX] = '\0';
2807         strncpy(in, opt, OPT_LEN_MAX);
2808
2809         while (*inptr && nchr > 0) {
2810                 if (inptr[0] == '$' && inptr[1] == '{') {
2811                         ch2 = strchr(inptr, '}');
2812                         if (ch2 && inptr+1 < ch2) {
2813                                 ch1 = inptr+2;
2814                                 inptr = ch2+1;
2815                                 *ch2 = '\0';
2816
2817                                 env = getenv(ch1);
2818                                 if (env) {
2819                                         envlen = strlen(env);
2820                                         if (envlen <= nchr) {
2821                                                 memcpy(outptr, env, envlen);
2822                                                 outptr += envlen;
2823                                                 nchr -= envlen;
2824                                         }
2825                                 }
2826
2827                                 continue;
2828                         }
2829                 }
2830
2831                 *outptr++ = *inptr++;
2832                 --nchr;
2833         }
2834
2835         *outptr = '\0';
2836         return strdup(out);
2837 }
2838
2839 /*
2840  * Look for reserved variable names and replace them with real values
2841  */
2842 static char *fio_keyword_replace(char *opt)
2843 {
2844         char *s;
2845         int i;
2846         int docalc = 0;
2847
2848         for (i = 0; fio_keywords[i].word != NULL; i++) {
2849                 struct fio_keyword *kw = &fio_keywords[i];
2850
2851                 while ((s = strstr(opt, kw->word)) != NULL) {
2852                         char *new = malloc(strlen(opt) + 1);
2853                         char *o_org = opt;
2854                         int olen = s - opt;
2855                         int len;
2856
2857                         /*
2858                          * Copy part of the string before the keyword and
2859                          * sprintf() the replacement after it.
2860                          */
2861                         memcpy(new, opt, olen);
2862                         len = sprintf(new + olen, "%s", kw->replace);
2863
2864                         /*
2865                          * If there's more in the original string, copy that
2866                          * in too
2867                          */
2868                         opt += strlen(kw->word) + olen;
2869                         if (strlen(opt))
2870                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2871
2872                         /*
2873                          * replace opt and free the old opt
2874                          */
2875                         opt = new;
2876                         free(o_org);
2877
2878                         docalc = 1;
2879                 }
2880         }
2881
2882         /*
2883          * Check for potential math and invoke bc, if possible
2884          */
2885         if (docalc)
2886                 opt = bc_calc(opt);
2887
2888         return opt;
2889 }
2890
2891 static char **dup_and_sub_options(char **opts, int num_opts)
2892 {
2893         int i;
2894         char **opts_copy = malloc(num_opts * sizeof(*opts));
2895         for (i = 0; i < num_opts; i++) {
2896                 opts_copy[i] = option_dup_subs(opts[i]);
2897                 if (!opts_copy[i])
2898                         continue;
2899                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2900         }
2901         return opts_copy;
2902 }
2903
2904 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2905 {
2906         int i, ret, unknown;
2907         char **opts_copy;
2908
2909         sort_options(opts, options, num_opts);
2910         opts_copy = dup_and_sub_options(opts, num_opts);
2911
2912         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2913                 struct fio_option *o;
2914                 int newret = parse_option(opts_copy[i], opts[i], options, &o,
2915                                           td);
2916
2917                 if (opts_copy[i]) {
2918                         if (newret && !o) {
2919                                 unknown++;
2920                                 continue;
2921                         }
2922                         free(opts_copy[i]);
2923                         opts_copy[i] = NULL;
2924                 }
2925
2926                 ret |= newret;
2927         }
2928
2929         if (unknown) {
2930                 ret |= ioengine_load(td);
2931                 if (td->eo) {
2932                         sort_options(opts_copy, td->io_ops->options, num_opts);
2933                         opts = opts_copy;
2934                 }
2935                 for (i = 0; i < num_opts; i++) {
2936                         struct fio_option *o = NULL;
2937                         int newret = 1;
2938                         if (!opts_copy[i])
2939                                 continue;
2940
2941                         if (td->eo)
2942                                 newret = parse_option(opts_copy[i], opts[i],
2943                                                       td->io_ops->options, &o,
2944                                                       td->eo);
2945
2946                         ret |= newret;
2947                         if (!o)
2948                                 log_err("Bad option <%s>\n", opts[i]);
2949
2950                         free(opts_copy[i]);
2951                         opts_copy[i] = NULL;
2952                 }
2953         }
2954
2955         free(opts_copy);
2956         return ret;
2957 }
2958
2959 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2960 {
2961         return parse_cmd_option(opt, val, options, td);
2962 }
2963
2964 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
2965                                 char *val)
2966 {
2967         return parse_cmd_option(opt, val, td->io_ops->options, td);
2968 }
2969
2970 void fio_fill_default_options(struct thread_data *td)
2971 {
2972         fill_default_options(td, options);
2973 }
2974
2975 int fio_show_option_help(const char *opt)
2976 {
2977         return show_cmd_help(options, opt);
2978 }
2979
2980 void options_mem_dupe(void *data, struct fio_option *options)
2981 {
2982         struct fio_option *o;
2983         char **ptr;
2984
2985         for (o = &options[0]; o->name; o++) {
2986                 if (o->type != FIO_OPT_STR_STORE)
2987                         continue;
2988
2989                 ptr = td_var(data, o->off1);
2990                 if (*ptr)
2991                         *ptr = strdup(*ptr);
2992         }
2993 }
2994
2995 /*
2996  * dupe FIO_OPT_STR_STORE options
2997  */
2998 void fio_options_mem_dupe(struct thread_data *td)
2999 {
3000         options_mem_dupe(&td->o, options);
3001
3002         if (td->eo && td->io_ops) {
3003                 void *oldeo = td->eo;
3004
3005                 td->eo = malloc(td->io_ops->option_struct_size);
3006                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
3007                 options_mem_dupe(td->eo, td->io_ops->options);
3008         }
3009 }
3010
3011 unsigned int fio_get_kb_base(void *data)
3012 {
3013         struct thread_data *td = data;
3014         unsigned int kb_base = 0;
3015
3016         if (td)
3017                 kb_base = td->o.kb_base;
3018         if (!kb_base)
3019                 kb_base = 1024;
3020
3021         return kb_base;
3022 }
3023
3024 int add_option(struct fio_option *o)
3025 {
3026         struct fio_option *__o;
3027         int opt_index = 0;
3028
3029         __o = options;
3030         while (__o->name) {
3031                 opt_index++;
3032                 __o++;
3033         }
3034
3035         memcpy(&options[opt_index], o, sizeof(*o));
3036         return 0;
3037 }
3038
3039 void invalidate_profile_options(const char *prof_name)
3040 {
3041         struct fio_option *o;
3042
3043         o = options;
3044         while (o->name) {
3045                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
3046                         o->type = FIO_OPT_INVALID;
3047                         o->prof_name = NULL;
3048                 }
3049                 o++;
3050         }
3051 }
3052
3053 void add_opt_posval(const char *optname, const char *ival, const char *help)
3054 {
3055         struct fio_option *o;
3056         unsigned int i;
3057
3058         o = find_option(options, optname);
3059         if (!o)
3060                 return;
3061
3062         for (i = 0; i < PARSE_MAX_VP; i++) {
3063                 if (o->posval[i].ival)
3064                         continue;
3065
3066                 o->posval[i].ival = ival;
3067                 o->posval[i].help = help;
3068                 break;
3069         }
3070 }
3071
3072 void del_opt_posval(const char *optname, const char *ival)
3073 {
3074         struct fio_option *o;
3075         unsigned int i;
3076
3077         o = find_option(options, optname);
3078         if (!o)
3079                 return;
3080
3081         for (i = 0; i < PARSE_MAX_VP; i++) {
3082                 if (!o->posval[i].ival)
3083                         continue;
3084                 if (strcmp(o->posval[i].ival, ival))
3085                         continue;
3086
3087                 o->posval[i].ival = NULL;
3088                 o->posval[i].help = NULL;
3089         }
3090 }
3091
3092 void fio_options_free(struct thread_data *td)
3093 {
3094         options_free(options, td);
3095         if (td->eo && td->io_ops && td->io_ops->options) {
3096                 options_free(td->io_ops->options, td->eo);
3097                 free(td->eo);
3098                 td->eo = NULL;
3099         }
3100 }