options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163
 164 }
 165
 166 static int str_bssplit_cb(void *data, const char *input)
 167 {
 168         struct thread_data *td = data;
 169         char *str, *p, *odir, *ddir;
 170         int ret = 0;
 171
 172         p = str = strdup(input);
 173
 174         strip_blank_front(&str);
 175         strip_blank_end(str);
 176
 177         odir = strchr(str, ',');
 178         if (odir) {
 179                 ddir = strchr(odir + 1, ',');
 180                 if (ddir) {
 181                         ret = bssplit_ddir(td, DDIR_TRIM, ddir + 1);
 182                         if (!ret)
 183                                 *ddir = '\0';
 184                 } else {
 185                         char *op;
 186
 187                         op = strdup(odir + 1);
 188                         ret = bssplit_ddir(td, DDIR_TRIM, op);
 189
 190                         free(op);
 191                 }
 192                 if (!ret)
 193                         ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 194                 if (!ret) {
 195                         *odir = '\0';
 196                         ret = bssplit_ddir(td, DDIR_READ, str);
 197                 }
 198         } else {
 199                 char *op;
 200
 201                 op = strdup(str);
 202                 ret = bssplit_ddir(td, DDIR_WRITE, op);
 203                 free(op);
 204
 205                 if (!ret) {
 206                         op = strdup(str);
 207                         ret = bssplit_ddir(td, DDIR_TRIM, op);
 208                         free(op);
 209                 }
 210                 ret = bssplit_ddir(td, DDIR_READ, str);
 211         }
 212
 213         free(p);
 214         return ret;
 215 }
 216
 217 static int str2error(char *str)
 218 {
 219         const char * err[] = {"EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 220                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 221                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 222                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 223                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 224                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 225                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 226                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE"};
 227         int i = 0, num = sizeof(err) / sizeof(void *);
 228
 229         while( i < num) {
 230                 if (!strcmp(err[i], str))
 231                         return i + 1;
 232                 i++;
 233         }
 234         return 0;
 235 }
 236
 237 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 238 {
 239         unsigned int i;
 240         int *error;
 241         char *fname;
 242
 243         if (etype >= ERROR_TYPE_CNT) {
 244                 log_err("Illegal error type\n");
 245                 return 1;
 246         }
 247
 248         td->o.ignore_error_nr[etype] = 4;
 249         error = malloc(4 * sizeof(struct bssplit));
 250
 251         i = 0;
 252         while ((fname = strsep(&str, ":")) != NULL) {
 253
 254                 if (!strlen(fname))
 255                         break;
 256
 257                 /*
 258                  * grow struct buffer, if needed
 259                  */
 260                 if (i == td->o.ignore_error_nr[etype]) {
 261                         td->o.ignore_error_nr[etype] <<= 1;
 262                         error = realloc(error, td->o.ignore_error_nr[etype]
 263                                                   * sizeof(int));
 264                 }
 265                 if (fname[0] == 'E') {
 266                         error[i] = str2error(fname);
 267                 } else {
 268                         error[i] = atoi(fname);
 269                         if (error[i] < 0)
 270                                 error[i] = error[i];
 271                 }
 272                 if (!error[i]) {
 273                         log_err("Unknown error %s, please use number value \n",
 274                                   fname);
 275                         return 1;
 276                 }
 277                 i++;
 278         }
 279         if (i) {
 280                 td->o.continue_on_error |= 1 << etype;
 281                 td->o.ignore_error_nr[etype] = i;
 282                 td->o.ignore_error[etype] = error;
 283         }
 284         return 0;
 285
 286 }
 287
 288 static int str_ignore_error_cb(void *data, const char *input)
 289 {
 290         struct thread_data *td = data;
 291         char *str, *p, *n;
 292         int type = 0, ret = 1;
 293         p = str = strdup(input);
 294
 295         strip_blank_front(&str);
 296         strip_blank_end(str);
 297
 298         while (p) {
 299                 n = strchr(p, ',');
 300                 if (n)
 301                         *n++ = '\0';
 302                 ret = ignore_error_type(td, type, p);
 303                 if (ret)
 304                         break;
 305                 p = n;
 306                 type++;
 307         }
 308         free(str);
 309         return ret;
 310 }
 311
 312 static int str_rw_cb(void *data, const char *str)
 313 {
 314         struct thread_data *td = data;
 315         char *nr = get_opt_postfix(str);
 316
 317         td->o.ddir_seq_nr = 1;
 318         td->o.ddir_seq_add = 0;
 319
 320         if (!nr)
 321                 return 0;
 322
 323         if (td_random(td))
 324                 td->o.ddir_seq_nr = atoi(nr);
 325         else {
 326                 long long val;
 327
 328                 if (str_to_decimal(nr, &val, 1, td)) {
 329                         log_err("fio: rw postfix parsing failed\n");
 330                         free(nr);
 331                         return 1;
 332                 }
 333
 334                 td->o.ddir_seq_add = val;
 335         }
 336
 337         free(nr);
 338         return 0;
 339 }
 340
 341 static int str_mem_cb(void *data, const char *mem)
 342 {
 343         struct thread_data *td = data;
 344
 345         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 346                 td->mmapfile = get_opt_postfix(mem);
 347                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 348                         log_err("fio: mmaphuge:/path/to/file\n");
 349                         return 1;
 350                 }
 351         }
 352
 353         return 0;
 354 }
 355
 356 static int str_verify_cb(void *data, const char *mem)
 357 {
 358         struct thread_data *td = data;
 359
 360         if (td->o.verify == VERIFY_CRC32C_INTEL ||
 361             td->o.verify == VERIFY_CRC32C) {
 362                 crc32c_intel_probe();
 363         }
 364
 365         return 0;
 366 }
 367
 368 static int fio_clock_source_cb(void *data, const char *str)
 369 {
 370         struct thread_data *td = data;
 371
 372         fio_clock_source = td->o.clocksource;
 373         fio_time_init();
 374         return 0;
 375 }
 376
 377 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 378 {
 379         mlock_size = *val;
 380         return 0;
 381 }
 382
 383 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 384 {
 385         struct thread_data *td = data;
 386
 387         td->o.rwmix[DDIR_READ] = *val;
 388         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 389         return 0;
 390 }
 391
 392 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 393 {
 394         struct thread_data *td = data;
 395
 396         td->o.rwmix[DDIR_WRITE] = *val;
 397         td->o.rwmix[DDIR_READ] = 100 - *val;
 398         return 0;
 399 }
 400
 401 #ifdef FIO_HAVE_IOPRIO
 402 static int str_prioclass_cb(void *data, unsigned long long *val)
 403 {
 404         struct thread_data *td = data;
 405         unsigned short mask;
 406
 407         /*
 408          * mask off old class bits, str_prio_cb() may have set a default class
 409          */
 410         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 411         td->ioprio &= mask;
 412
 413         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 414         td->ioprio_set = 1;
 415         return 0;
 416 }
 417
 418 static int str_prio_cb(void *data, unsigned long long *val)
 419 {
 420         struct thread_data *td = data;
 421
 422         td->ioprio |= *val;
 423
 424         /*
 425          * If no class is set, assume BE
 426          */
 427         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 428                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 429
 430         td->ioprio_set = 1;
 431         return 0;
 432 }
 433 #endif
 434
 435 static int str_exitall_cb(void)
 436 {
 437         exitall_on_terminate = 1;
 438         return 0;
 439 }
 440
 441 #ifdef FIO_HAVE_CPU_AFFINITY
 442 static int str_cpumask_cb(void *data, unsigned long long *val)
 443 {
 444         struct thread_data *td = data;
 445         unsigned int i;
 446         long max_cpu;
 447         int ret;
 448
 449         ret = fio_cpuset_init(&td->o.cpumask);
 450         if (ret < 0) {
 451                 log_err("fio: cpuset_init failed\n");
 452                 td_verror(td, ret, "fio_cpuset_init");
 453                 return 1;
 454         }
 455
 456         max_cpu = cpus_online();
 457
 458         for (i = 0; i < sizeof(int) * 8; i++) {
 459                 if ((1 << i) & *val) {
 460                         if (i > max_cpu) {
 461                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 462                                                                 max_cpu);
 463                                 return 1;
 464                         }
 465                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 466                         fio_cpu_set(&td->o.cpumask, i);
 467                 }
 468         }
 469
 470         td->o.cpumask_set = 1;
 471         return 0;
 472 }
 473
 474 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 475                             const char *input)
 476 {
 477         char *cpu, *str, *p;
 478         long max_cpu;
 479         int ret = 0;
 480
 481         ret = fio_cpuset_init(mask);
 482         if (ret < 0) {
 483                 log_err("fio: cpuset_init failed\n");
 484                 td_verror(td, ret, "fio_cpuset_init");
 485                 return 1;
 486         }
 487
 488         p = str = strdup(input);
 489
 490         strip_blank_front(&str);
 491         strip_blank_end(str);
 492
 493         max_cpu = cpus_online();
 494
 495         while ((cpu = strsep(&str, ",")) != NULL) {
 496                 char *str2, *cpu2;
 497                 int icpu, icpu2;
 498
 499                 if (!strlen(cpu))
 500                         break;
 501
 502                 str2 = cpu;
 503                 icpu2 = -1;
 504                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 505                         if (!strlen(cpu2))
 506                                 break;
 507
 508                         icpu2 = atoi(cpu2);
 509                 }
 510
 511                 icpu = atoi(cpu);
 512                 if (icpu2 == -1)
 513                         icpu2 = icpu;
 514                 while (icpu <= icpu2) {
 515                         if (icpu >= FIO_MAX_CPUS) {
 516                                 log_err("fio: your OS only supports up to"
 517                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 518                                 ret = 1;
 519                                 break;
 520                         }
 521                         if (icpu > max_cpu) {
 522                                 log_err("fio: CPU %d too large (max=%ld)\n",
 523                                                         icpu, max_cpu);
 524                                 ret = 1;
 525                                 break;
 526                         }
 527
 528                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 529                         fio_cpu_set(mask, icpu);
 530                         icpu++;
 531                 }
 532                 if (ret)
 533                         break;
 534         }
 535
 536         free(p);
 537         if (!ret)
 538                 td->o.cpumask_set = 1;
 539         return ret;
 540 }
 541
 542 static int str_cpus_allowed_cb(void *data, const char *input)
 543 {
 544         struct thread_data *td = data;
 545         int ret;
 546
 547         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 548         if (!ret)
 549                 td->o.cpumask_set = 1;
 550
 551         return ret;
 552 }
 553
 554 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 555 {
 556         struct thread_data *td = data;
 557         int ret;
 558
 559         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 560         if (!ret)
 561                 td->o.verify_cpumask_set = 1;
 562
 563         return ret;
 564 }
 565 #endif
 566
 567 #ifdef FIO_HAVE_LIBNUMA
 568 static int str_numa_cpunodes_cb(void *data, char *input)
 569 {
 570         struct thread_data *td = data;
 571
 572         /* numa_parse_nodestring() parses a character string list
 573          * of nodes into a bit mask. The bit mask is allocated by
 574          * numa_allocate_nodemask(), so it should be freed by
 575          * numa_free_nodemask().
 576          */
 577         td->o.numa_cpunodesmask = numa_parse_nodestring(input);
 578         if (td->o.numa_cpunodesmask == NULL) {
 579                 log_err("fio: numa_parse_nodestring failed\n");
 580                 td_verror(td, 1, "str_numa_cpunodes_cb");
 581                 return 1;
 582         }
 583
 584         td->o.numa_cpumask_set = 1;
 585         return 0;
 586 }
 587
 588 static int str_numa_mpol_cb(void *data, char *input)
 589 {
 590         struct thread_data *td = data;
 591         const char * const policy_types[] =
 592                 { "default", "prefer", "bind", "interleave", "local" };
 593         int i;
 594
 595         char *nodelist = strchr(input, ':');
 596         if (nodelist) {
 597                 /* NUL-terminate mode */
 598                 *nodelist++ = '\0';
 599         }
 600
 601         for (i = 0; i <= MPOL_LOCAL; i++) {
 602                 if (!strcmp(input, policy_types[i])) {
 603                         td->o.numa_mem_mode = i;
 604                         break;
 605                 }
 606         }
 607         if (i > MPOL_LOCAL) {
 608                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 609                 goto out;
 610         }
 611
 612         switch (td->o.numa_mem_mode) {
 613         case MPOL_PREFERRED:
 614                 /*
 615                  * Insist on a nodelist of one node only
 616                  */
 617                 if (nodelist) {
 618                         char *rest = nodelist;
 619                         while (isdigit(*rest))
 620                                 rest++;
 621                         if (*rest) {
 622                                 log_err("fio: one node only for \'prefer\'\n");
 623                                 goto out;
 624                         }
 625                 } else {
 626                         log_err("fio: one node is needed for \'prefer\'\n");
 627                         goto out;
 628                 }
 629                 break;
 630         case MPOL_INTERLEAVE:
 631                 /*
 632                  * Default to online nodes with memory if no nodelist
 633                  */
 634                 if (!nodelist)
 635                         nodelist = strdup("all");
 636                 break;
 637         case MPOL_LOCAL:
 638         case MPOL_DEFAULT:
 639                 /*
 640                  * Don't allow a nodelist
 641                  */
 642                 if (nodelist) {
 643                         log_err("fio: NO nodelist for \'local\'\n");
 644                         goto out;
 645                 }
 646                 break;
 647         case MPOL_BIND:
 648                 /*
 649                  * Insist on a nodelist
 650                  */
 651                 if (!nodelist) {
 652                         log_err("fio: a nodelist is needed for \'bind\'\n");
 653                         goto out;
 654                 }
 655                 break;
 656         }
 657
 658
 659         /* numa_parse_nodestring() parses a character string list
 660          * of nodes into a bit mask. The bit mask is allocated by
 661          * numa_allocate_nodemask(), so it should be freed by
 662          * numa_free_nodemask().
 663          */
 664         switch (td->o.numa_mem_mode) {
 665         case MPOL_PREFERRED:
 666                 td->o.numa_mem_prefer_node = atoi(nodelist);
 667                 break;
 668         case MPOL_INTERLEAVE:
 669         case MPOL_BIND:
 670                 td->o.numa_memnodesmask = numa_parse_nodestring(nodelist);
 671                 if (td->o.numa_memnodesmask == NULL) {
 672                         log_err("fio: numa_parse_nodestring failed\n");
 673                         td_verror(td, 1, "str_numa_memnodes_cb");
 674                         return 1;
 675                 }
 676                 break;
 677         case MPOL_LOCAL:
 678         case MPOL_DEFAULT:
 679         default:
 680                 break;
 681         }
 682
 683         td->o.numa_memmask_set = 1;
 684         return 0;
 685
 686 out:
 687         return 1;
 688 }
 689 #endif
 690
 691 #ifdef FIO_HAVE_TRIM
 692 static int str_verify_trim_cb(void *data, unsigned long long *val)
 693 {
 694         struct thread_data *td = data;
 695
 696         td->o.trim_percentage = *val;
 697         return 0;
 698 }
 699 #endif
 700
 701 static int str_fst_cb(void *data, const char *str)
 702 {
 703         struct thread_data *td = data;
 704         char *nr = get_opt_postfix(str);
 705
 706         td->file_service_nr = 1;
 707         if (nr) {
 708                 td->file_service_nr = atoi(nr);
 709                 free(nr);
 710         }
 711
 712         return 0;
 713 }
 714
 715 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 716 static int str_sfr_cb(void *data, const char *str)
 717 {
 718         struct thread_data *td = data;
 719         char *nr = get_opt_postfix(str);
 720
 721         td->sync_file_range_nr = 1;
 722         if (nr) {
 723                 td->sync_file_range_nr = atoi(nr);
 724                 free(nr);
 725         }
 726
 727         return 0;
 728 }
 729 #endif
 730
 731 static int str_random_distribution_cb(void *data, const char *str)
 732 {
 733         struct thread_data *td = data;
 734         double val;
 735         char *nr;
 736
 737         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 738                 val = 1.1;
 739         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 740                 val = 0.2;
 741         else
 742                 return 0;
 743
 744         nr = get_opt_postfix(str);
 745         if (nr && !str_to_float(nr, &val)) {
 746                 log_err("fio: random postfix parsing failed\n");
 747                 free(nr);
 748                 return 1;
 749         }
 750
 751         free(nr);
 752
 753         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 754                 if (val == 1.00) {
 755                         log_err("fio: zipf theta must different than 1.0\n");
 756                         return 1;
 757                 }
 758                 td->o.zipf_theta = val;
 759         } else {
 760                 if (val <= 0.00 || val >= 1.00) {
 761                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 762                         return 1;
 763                 }
 764                 td->o.pareto_h = val;
 765         }
 766
 767         return 0;
 768 }
 769
 770 static int check_dir(struct thread_data *td, char *fname)
 771 {
 772 #if 0
 773         char file[PATH_MAX], *dir;
 774         int elen = 0;
 775
 776         if (td->o.directory) {
 777                 strcpy(file, td->o.directory);
 778                 strcat(file, "/");
 779                 elen = strlen(file);
 780         }
 781
 782         sprintf(file + elen, "%s", fname);
 783         dir = dirname(file);
 784
 785         {
 786         struct stat sb;
 787         /*
 788          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 789          * yet, so we can't do this check right here...
 790          */
 791         if (lstat(dir, &sb) < 0) {
 792                 int ret = errno;
 793
 794                 log_err("fio: %s is not a directory\n", dir);
 795                 td_verror(td, ret, "lstat");
 796                 return 1;
 797         }
 798
 799         if (!S_ISDIR(sb.st_mode)) {
 800                 log_err("fio: %s is not a directory\n", dir);
 801                 return 1;
 802         }
 803         }
 804 #endif
 805
 806         return 0;
 807 }
 808
 809 /*
 810  * Return next file in the string. Files are separated with ':'. If the ':'
 811  * is escaped with a '\', then that ':' is part of the filename and does not
 812  * indicate a new file.
 813  */
 814 static char *get_next_file_name(char **ptr)
 815 {
 816         char *str = *ptr;
 817         char *p, *start;
 818
 819         if (!str || !strlen(str))
 820                 return NULL;
 821
 822         start = str;
 823         do {
 824                 /*
 825                  * No colon, we are done
 826                  */
 827                 p = strchr(str, ':');
 828                 if (!p) {
 829                         *ptr = NULL;
 830                         break;
 831                 }
 832
 833                 /*
 834                  * We got a colon, but it's the first character. Skip and
 835                  * continue
 836                  */
 837                 if (p == start) {
 838                         str = ++start;
 839                         continue;
 840                 }
 841
 842                 if (*(p - 1) != '\\') {
 843                         *p = '\0';
 844                         *ptr = p + 1;
 845                         break;
 846                 }
 847
 848                 memmove(p - 1, p, strlen(p) + 1);
 849                 str = p;
 850         } while (1);
 851
 852         return start;
 853 }
 854
 855 static int str_filename_cb(void *data, const char *input)
 856 {
 857         struct thread_data *td = data;
 858         char *fname, *str, *p;
 859
 860         p = str = strdup(input);
 861
 862         strip_blank_front(&str);
 863         strip_blank_end(str);
 864
 865         if (!td->files_index)
 866                 td->o.nr_files = 0;
 867
 868         while ((fname = get_next_file_name(&str)) != NULL) {
 869                 if (!strlen(fname))
 870                         break;
 871                 if (check_dir(td, fname)) {
 872                         free(p);
 873                         return 1;
 874                 }
 875                 add_file(td, fname);
 876                 td->o.nr_files++;
 877         }
 878
 879         free(p);
 880         return 0;
 881 }
 882
 883 static int str_directory_cb(void *data, const char fio_unused *str)
 884 {
 885         struct thread_data *td = data;
 886         struct stat sb;
 887
 888         if (lstat(td->o.directory, &sb) < 0) {
 889                 int ret = errno;
 890
 891                 log_err("fio: %s is not a directory\n", td->o.directory);
 892                 td_verror(td, ret, "lstat");
 893                 return 1;
 894         }
 895         if (!S_ISDIR(sb.st_mode)) {
 896                 log_err("fio: %s is not a directory\n", td->o.directory);
 897                 return 1;
 898         }
 899
 900         return 0;
 901 }
 902
 903 static int str_opendir_cb(void *data, const char fio_unused *str)
 904 {
 905         struct thread_data *td = data;
 906
 907         if (!td->files_index)
 908                 td->o.nr_files = 0;
 909
 910         return add_dir_files(td, td->o.opendir);
 911 }
 912
 913 static int str_verify_offset_cb(void *data, unsigned long long *off)
 914 {
 915         struct thread_data *td = data;
 916
 917         if (*off && *off < sizeof(struct verify_header)) {
 918                 log_err("fio: verify_offset too small\n");
 919                 return 1;
 920         }
 921
 922         td->o.verify_offset = *off;
 923         return 0;
 924 }
 925
 926 static int str_verify_pattern_cb(void *data, const char *input)
 927 {
 928         struct thread_data *td = data;
 929         long off;
 930         int i = 0, j = 0, len, k, base = 10;
 931         char* loc1, * loc2;
 932
 933         loc1 = strstr(input, "0x");
 934         loc2 = strstr(input, "0X");
 935         if (loc1 || loc2)
 936                 base = 16;
 937         off = strtol(input, NULL, base);
 938         if (off != LONG_MAX || errno != ERANGE) {
 939                 while (off) {
 940                         td->o.verify_pattern[i] = off & 0xff;
 941                         off >>= 8;
 942                         i++;
 943                 }
 944         } else {
 945                 len = strlen(input);
 946                 k = len - 1;
 947                 if (base == 16) {
 948                         if (loc1)
 949                                 j = loc1 - input + 2;
 950                         else
 951                                 j = loc2 - input + 2;
 952                 } else
 953                         return 1;
 954                 if (len - j < MAX_PATTERN_SIZE * 2) {
 955                         while (k >= j) {
 956                                 off = converthexchartoint(input[k--]);
 957                                 if (k >= j)
 958                                         off += (converthexchartoint(input[k--])
 959                                                 * 16);
 960                                 td->o.verify_pattern[i++] = (char) off;
 961                         }
 962                 }
 963         }
 964
 965         /*
 966          * Fill the pattern all the way to the end. This greatly reduces
 967          * the number of memcpy's we have to do when verifying the IO.
 968          */
 969         while (i > 1 && i * 2 <= MAX_PATTERN_SIZE) {
 970                 memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
 971                 i *= 2;
 972         }
 973         if (i == 1) {
 974                 /*
 975                  * The code in verify_io_u_pattern assumes a single byte pattern
 976                  * fills the whole verify pattern buffer.
 977                  */
 978                 memset(td->o.verify_pattern, td->o.verify_pattern[0],
 979                        MAX_PATTERN_SIZE);
 980         }
 981
 982         td->o.verify_pattern_bytes = i;
 983
 984         /*
 985          * VERIFY_META could already be set
 986          */
 987         if (td->o.verify == VERIFY_NONE)
 988                 td->o.verify = VERIFY_PATTERN;
 989
 990         return 0;
 991 }
 992
 993 static int str_lockfile_cb(void *data, const char *str)
 994 {
 995         struct thread_data *td = data;
 996         char *nr = get_opt_postfix(str);
 997
 998         td->o.lockfile_batch = 1;
 999         if (nr) {
1000                 td->o.lockfile_batch = atoi(nr);
1001                 free(nr);
1002         }
1003
1004         return 0;
1005 }
1006
1007 static int str_write_bw_log_cb(void *data, const char *str)
1008 {
1009         struct thread_data *td = data;
1010
1011         if (str)
1012                 td->o.bw_log_file = strdup(str);
1013
1014         td->o.write_bw_log = 1;
1015         return 0;
1016 }
1017
1018 static int str_write_lat_log_cb(void *data, const char *str)
1019 {
1020         struct thread_data *td = data;
1021
1022         if (str)
1023                 td->o.lat_log_file = strdup(str);
1024
1025         td->o.write_lat_log = 1;
1026         return 0;
1027 }
1028
1029 static int str_write_iops_log_cb(void *data, const char *str)
1030 {
1031         struct thread_data *td = data;
1032
1033         if (str)
1034                 td->o.iops_log_file = strdup(str);
1035
1036         td->o.write_iops_log = 1;
1037         return 0;
1038 }
1039
1040 static int str_gtod_reduce_cb(void *data, int *il)
1041 {
1042         struct thread_data *td = data;
1043         int val = *il;
1044
1045         td->o.disable_lat = !!val;
1046         td->o.disable_clat = !!val;
1047         td->o.disable_slat = !!val;
1048         td->o.disable_bw = !!val;
1049         td->o.clat_percentiles = !val;
1050         if (val)
1051                 td->tv_cache_mask = 63;
1052
1053         return 0;
1054 }
1055
1056 static int str_gtod_cpu_cb(void *data, long long *il)
1057 {
1058         struct thread_data *td = data;
1059         int val = *il;
1060
1061         td->o.gtod_cpu = val;
1062         td->o.gtod_offload = 1;
1063         return 0;
1064 }
1065
1066 static int str_size_cb(void *data, unsigned long long *__val)
1067 {
1068         struct thread_data *td = data;
1069         unsigned long long v = *__val;
1070
1071         if (parse_is_percent(v)) {
1072                 td->o.size = 0;
1073                 td->o.size_percent = -1ULL - v;
1074         } else
1075                 td->o.size = v;
1076
1077         return 0;
1078 }
1079
1080 static int rw_verify(struct fio_option *o, void *data)
1081 {
1082         struct thread_data *td = data;
1083
1084         if (read_only && td_write(td)) {
1085                 log_err("fio: job <%s> has write bit set, but fio is in"
1086                         " read-only mode\n", td->o.name);
1087                 return 1;
1088         }
1089
1090         return 0;
1091 }
1092
1093 static int gtod_cpu_verify(struct fio_option *o, void *data)
1094 {
1095 #ifndef FIO_HAVE_CPU_AFFINITY
1096         struct thread_data *td = data;
1097
1098         if (td->o.gtod_cpu) {
1099                 log_err("fio: platform must support CPU affinity for"
1100                         "gettimeofday() offloading\n");
1101                 return 1;
1102         }
1103 #endif
1104
1105         return 0;
1106 }
1107
1108 static int kb_base_verify(struct fio_option *o, void *data)
1109 {
1110         struct thread_data *td = data;
1111
1112         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
1113                 log_err("fio: kb_base set to nonsensical value: %u\n",
1114                                 td->o.kb_base);
1115                 return 1;
1116         }
1117
1118         return 0;
1119 }
1120
1121 /*
1122  * Map of job/command line options
1123  */
1124 static struct fio_option options[FIO_MAX_OPTS] = {
1125         {
1126                 .name   = "description",
1127                 .type   = FIO_OPT_STR_STORE,
1128                 .off1   = td_var_offset(description),
1129                 .help   = "Text job description",
1130         },
1131         {
1132                 .name   = "name",
1133                 .type   = FIO_OPT_STR_STORE,
1134                 .off1   = td_var_offset(name),
1135                 .help   = "Name of this job",
1136         },
1137         {
1138                 .name   = "directory",
1139                 .type   = FIO_OPT_STR_STORE,
1140                 .off1   = td_var_offset(directory),
1141                 .cb     = str_directory_cb,
1142                 .help   = "Directory to store files in",
1143         },
1144         {
1145                 .name   = "filename",
1146                 .type   = FIO_OPT_STR_STORE,
1147                 .off1   = td_var_offset(filename),
1148                 .cb     = str_filename_cb,
1149                 .prio   = -1, /* must come after "directory" */
1150                 .help   = "File(s) to use for the workload",
1151         },
1152         {
1153                 .name   = "kb_base",
1154                 .type   = FIO_OPT_INT,
1155                 .off1   = td_var_offset(kb_base),
1156                 .verify = kb_base_verify,
1157                 .prio   = 1,
1158                 .def    = "1024",
1159                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
1160         },
1161         {
1162                 .name   = "lockfile",
1163                 .type   = FIO_OPT_STR,
1164                 .cb     = str_lockfile_cb,
1165                 .off1   = td_var_offset(file_lock_mode),
1166                 .help   = "Lock file when doing IO to it",
1167                 .parent = "filename",
1168                 .def    = "none",
1169                 .posval = {
1170                           { .ival = "none",
1171                             .oval = FILE_LOCK_NONE,
1172                             .help = "No file locking",
1173                           },
1174                           { .ival = "exclusive",
1175                             .oval = FILE_LOCK_EXCLUSIVE,
1176                             .help = "Exclusive file lock",
1177                           },
1178                           {
1179                             .ival = "readwrite",
1180                             .oval = FILE_LOCK_READWRITE,
1181                             .help = "Read vs write lock",
1182                           },
1183                 },
1184         },
1185         {
1186                 .name   = "opendir",
1187                 .type   = FIO_OPT_STR_STORE,
1188                 .off1   = td_var_offset(opendir),
1189                 .cb     = str_opendir_cb,
1190                 .help   = "Recursively add files from this directory and down",
1191         },
1192         {
1193                 .name   = "rw",
1194                 .alias  = "readwrite",
1195                 .type   = FIO_OPT_STR,
1196                 .cb     = str_rw_cb,
1197                 .off1   = td_var_offset(td_ddir),
1198                 .help   = "IO direction",
1199                 .def    = "read",
1200                 .verify = rw_verify,
1201                 .posval = {
1202                           { .ival = "read",
1203                             .oval = TD_DDIR_READ,
1204                             .help = "Sequential read",
1205                           },
1206                           { .ival = "write",
1207                             .oval = TD_DDIR_WRITE,
1208                             .help = "Sequential write",
1209                           },
1210                           { .ival = "trim",
1211                             .oval = TD_DDIR_TRIM,
1212                             .help = "Sequential trim",
1213                           },
1214                           { .ival = "randread",
1215                             .oval = TD_DDIR_RANDREAD,
1216                             .help = "Random read",
1217                           },
1218                           { .ival = "randwrite",
1219                             .oval = TD_DDIR_RANDWRITE,
1220                             .help = "Random write",
1221                           },
1222                           { .ival = "randtrim",
1223                             .oval = TD_DDIR_RANDTRIM,
1224                             .help = "Random trim",
1225                           },
1226                           { .ival = "rw",
1227                             .oval = TD_DDIR_RW,
1228                             .help = "Sequential read and write mix",
1229                           },
1230                           { .ival = "readwrite",
1231                             .oval = TD_DDIR_RW,
1232                             .help = "Sequential read and write mix",
1233                           },
1234                           { .ival = "randrw",
1235                             .oval = TD_DDIR_RANDRW,
1236                             .help = "Random read and write mix"
1237                           },
1238                 },
1239         },
1240         {
1241                 .name   = "rw_sequencer",
1242                 .type   = FIO_OPT_STR,
1243                 .off1   = td_var_offset(rw_seq),
1244                 .help   = "IO offset generator modifier",
1245                 .def    = "sequential",
1246                 .posval = {
1247                           { .ival = "sequential",
1248                             .oval = RW_SEQ_SEQ,
1249                             .help = "Generate sequential offsets",
1250                           },
1251                           { .ival = "identical",
1252                             .oval = RW_SEQ_IDENT,
1253                             .help = "Generate identical offsets",
1254                           },
1255                 },
1256         },
1257
1258         {
1259                 .name   = "ioengine",
1260                 .type   = FIO_OPT_STR_STORE,
1261                 .off1   = td_var_offset(ioengine),
1262                 .help   = "IO engine to use",
1263                 .def    = FIO_PREFERRED_ENGINE,
1264                 .posval = {
1265                           { .ival = "sync",
1266                             .help = "Use read/write",
1267                           },
1268                           { .ival = "psync",
1269                             .help = "Use pread/pwrite",
1270                           },
1271                           { .ival = "vsync",
1272                             .help = "Use readv/writev",
1273                           },
1274 #ifdef FIO_HAVE_LIBAIO
1275                           { .ival = "libaio",
1276                             .help = "Linux native asynchronous IO",
1277                           },
1278 #endif
1279 #ifdef FIO_HAVE_POSIXAIO
1280                           { .ival = "posixaio",
1281                             .help = "POSIX asynchronous IO",
1282                           },
1283 #endif
1284 #ifdef FIO_HAVE_SOLARISAIO
1285                           { .ival = "solarisaio",
1286                             .help = "Solaris native asynchronous IO",
1287                           },
1288 #endif
1289 #ifdef FIO_HAVE_WINDOWSAIO
1290                           { .ival = "windowsaio",
1291                             .help = "Windows native asynchronous IO"
1292                           },
1293 #endif
1294                           { .ival = "mmap",
1295                             .help = "Memory mapped IO"
1296                           },
1297 #ifdef FIO_HAVE_SPLICE
1298                           { .ival = "splice",
1299                             .help = "splice/vmsplice based IO",
1300                           },
1301                           { .ival = "netsplice",
1302                             .help = "splice/vmsplice to/from the network",
1303                           },
1304 #endif
1305 #ifdef FIO_HAVE_SGIO
1306                           { .ival = "sg",
1307                             .help = "SCSI generic v3 IO",
1308                           },
1309 #endif
1310                           { .ival = "null",
1311                             .help = "Testing engine (no data transfer)",
1312                           },
1313                           { .ival = "net",
1314                             .help = "Network IO",
1315                           },
1316 #ifdef FIO_HAVE_SYSLET
1317                           { .ival = "syslet-rw",
1318                             .help = "syslet enabled async pread/pwrite IO",
1319                           },
1320 #endif
1321                           { .ival = "cpuio",
1322                             .help = "CPU cycle burner engine",
1323                           },
1324 #ifdef FIO_HAVE_GUASI
1325                           { .ival = "guasi",
1326                             .help = "GUASI IO engine",
1327                           },
1328 #endif
1329 #ifdef FIO_HAVE_BINJECT
1330                           { .ival = "binject",
1331                             .help = "binject direct inject block engine",
1332                           },
1333 #endif
1334 #ifdef FIO_HAVE_RDMA
1335                           { .ival = "rdma",
1336                             .help = "RDMA IO engine",
1337                           },
1338 #endif
1339 #ifdef FIO_HAVE_FUSION_AW
1340                           { .ival = "fusion-aw-sync",
1341                             .help = "Fusion-io atomic write engine",
1342                           },
1343 #endif
1344 #ifdef FIO_HAVE_E4_ENG
1345                           { .ival = "e4defrag",
1346                             .help = "ext4 defrag engine",
1347                           },
1348 #endif
1349 #ifdef FIO_HAVE_FALLOC_ENG
1350                           { .ival = "falloc",
1351                             .help = "fallocate() file based engine",
1352                           },
1353 #endif
1354                           { .ival = "external",
1355                             .help = "Load external engine (append name)",
1356                           },
1357                 },
1358         },
1359         {
1360                 .name   = "iodepth",
1361                 .type   = FIO_OPT_INT,
1362                 .off1   = td_var_offset(iodepth),
1363                 .help   = "Number of IO buffers to keep in flight",
1364                 .minval = 1,
1365                 .def    = "1",
1366         },
1367         {
1368                 .name   = "iodepth_batch",
1369                 .alias  = "iodepth_batch_submit",
1370                 .type   = FIO_OPT_INT,
1371                 .off1   = td_var_offset(iodepth_batch),
1372                 .help   = "Number of IO buffers to submit in one go",
1373                 .parent = "iodepth",
1374                 .minval = 1,
1375                 .def    = "1",
1376         },
1377         {
1378                 .name   = "iodepth_batch_complete",
1379                 .type   = FIO_OPT_INT,
1380                 .off1   = td_var_offset(iodepth_batch_complete),
1381                 .help   = "Number of IO buffers to retrieve in one go",
1382                 .parent = "iodepth",
1383                 .minval = 0,
1384                 .def    = "1",
1385         },
1386         {
1387                 .name   = "iodepth_low",
1388                 .type   = FIO_OPT_INT,
1389                 .off1   = td_var_offset(iodepth_low),
1390                 .help   = "Low water mark for queuing depth",
1391                 .parent = "iodepth",
1392         },
1393         {
1394                 .name   = "size",
1395                 .type   = FIO_OPT_STR_VAL,
1396                 .cb     = str_size_cb,
1397                 .help   = "Total size of device or files",
1398         },
1399         {
1400                 .name   = "fill_device",
1401                 .alias  = "fill_fs",
1402                 .type   = FIO_OPT_BOOL,
1403                 .off1   = td_var_offset(fill_device),
1404                 .help   = "Write until an ENOSPC error occurs",
1405                 .def    = "0",
1406         },
1407         {
1408                 .name   = "filesize",
1409                 .type   = FIO_OPT_STR_VAL,
1410                 .off1   = td_var_offset(file_size_low),
1411                 .off2   = td_var_offset(file_size_high),
1412                 .minval = 1,
1413                 .help   = "Size of individual files",
1414         },
1415         {
1416                 .name   = "offset",
1417                 .alias  = "fileoffset",
1418                 .type   = FIO_OPT_STR_VAL,
1419                 .off1   = td_var_offset(start_offset),
1420                 .help   = "Start IO from this offset",
1421                 .def    = "0",
1422         },
1423         {
1424                 .name   = "offset_increment",
1425                 .type   = FIO_OPT_STR_VAL,
1426                 .off1   = td_var_offset(offset_increment),
1427                 .help   = "What is the increment from one offset to the next",
1428                 .parent = "offset",
1429                 .def    = "0",
1430         },
1431         {
1432                 .name   = "bs",
1433                 .alias  = "blocksize",
1434                 .type   = FIO_OPT_INT,
1435                 .off1   = td_var_offset(bs[DDIR_READ]),
1436                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1437                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1438                 .minval = 1,
1439                 .help   = "Block size unit",
1440                 .def    = "4k",
1441                 .parent = "rw",
1442         },
1443         {
1444                 .name   = "ba",
1445                 .alias  = "blockalign",
1446                 .type   = FIO_OPT_INT,
1447                 .off1   = td_var_offset(ba[DDIR_READ]),
1448                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1449                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1450                 .minval = 1,
1451                 .help   = "IO block offset alignment",
1452                 .parent = "rw",
1453         },
1454         {
1455                 .name   = "bsrange",
1456                 .alias  = "blocksize_range",
1457                 .type   = FIO_OPT_RANGE,
1458                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1459                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1460                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1461                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1462                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1463                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1464                 .minval = 1,
1465                 .help   = "Set block size range (in more detail than bs)",
1466                 .parent = "rw",
1467         },
1468         {
1469                 .name   = "bssplit",
1470                 .type   = FIO_OPT_STR,
1471                 .cb     = str_bssplit_cb,
1472                 .help   = "Set a specific mix of block sizes",
1473                 .parent = "rw",
1474         },
1475         {
1476                 .name   = "bs_unaligned",
1477                 .alias  = "blocksize_unaligned",
1478                 .type   = FIO_OPT_STR_SET,
1479                 .off1   = td_var_offset(bs_unaligned),
1480                 .help   = "Don't sector align IO buffer sizes",
1481                 .parent = "rw",
1482         },
1483         {
1484                 .name   = "randrepeat",
1485                 .type   = FIO_OPT_BOOL,
1486                 .off1   = td_var_offset(rand_repeatable),
1487                 .help   = "Use repeatable random IO pattern",
1488                 .def    = "1",
1489                 .parent = "rw",
1490         },
1491         {
1492                 .name   = "use_os_rand",
1493                 .type   = FIO_OPT_BOOL,
1494                 .off1   = td_var_offset(use_os_rand),
1495                 .help   = "Set to use OS random generator",
1496                 .def    = "0",
1497                 .parent = "rw",
1498         },
1499         {
1500                 .name   = "norandommap",
1501                 .type   = FIO_OPT_STR_SET,
1502                 .off1   = td_var_offset(norandommap),
1503                 .help   = "Accept potential duplicate random blocks",
1504                 .parent = "rw",
1505         },
1506         {
1507                 .name   = "softrandommap",
1508                 .type   = FIO_OPT_BOOL,
1509                 .off1   = td_var_offset(softrandommap),
1510                 .help   = "Set norandommap if randommap allocation fails",
1511                 .parent = "norandommap",
1512                 .def    = "0",
1513         },
1514         {
1515                 .name   = "random_generator",
1516                 .type   = FIO_OPT_STR,
1517                 .off1   = td_var_offset(random_generator),
1518                 .help   = "Type of random number generator to use",
1519                 .def    = "tausworthe",
1520                 .posval = {
1521                           { .ival = "tausworthe",
1522                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1523                             .help = "Strong Tausworthe generator",
1524                           },
1525                           { .ival = "lfsr",
1526                             .oval = FIO_RAND_GEN_LFSR,
1527                             .help = "Variable length LFSR",
1528                           },
1529                 },
1530         },
1531         {
1532                 .name   = "random_distribution",
1533                 .type   = FIO_OPT_STR,
1534                 .off1   = td_var_offset(random_distribution),
1535                 .cb     = str_random_distribution_cb,
1536                 .help   = "Random offset distribution generator",
1537                 .def    = "random",
1538                 .posval = {
1539                           { .ival = "random",
1540                             .oval = FIO_RAND_DIST_RANDOM,
1541                             .help = "Completely random",
1542                           },
1543                           { .ival = "zipf",
1544                             .oval = FIO_RAND_DIST_ZIPF,
1545                             .help = "Zipf distribution",
1546                           },
1547                           { .ival = "pareto",
1548                             .oval = FIO_RAND_DIST_PARETO,
1549                             .help = "Pareto distribution",
1550                           },
1551                 },
1552         },
1553         {
1554                 .name   = "nrfiles",
1555                 .alias  = "nr_files",
1556                 .type   = FIO_OPT_INT,
1557                 .off1   = td_var_offset(nr_files),
1558                 .help   = "Split job workload between this number of files",
1559                 .def    = "1",
1560         },
1561         {
1562                 .name   = "openfiles",
1563                 .type   = FIO_OPT_INT,
1564                 .off1   = td_var_offset(open_files),
1565                 .help   = "Number of files to keep open at the same time",
1566         },
1567         {
1568                 .name   = "file_service_type",
1569                 .type   = FIO_OPT_STR,
1570                 .cb     = str_fst_cb,
1571                 .off1   = td_var_offset(file_service_type),
1572                 .help   = "How to select which file to service next",
1573                 .def    = "roundrobin",
1574                 .posval = {
1575                           { .ival = "random",
1576                             .oval = FIO_FSERVICE_RANDOM,
1577                             .help = "Choose a file at random",
1578                           },
1579                           { .ival = "roundrobin",
1580                             .oval = FIO_FSERVICE_RR,
1581                             .help = "Round robin select files",
1582                           },
1583                           { .ival = "sequential",
1584                             .oval = FIO_FSERVICE_SEQ,
1585                             .help = "Finish one file before moving to the next",
1586                           },
1587                 },
1588                 .parent = "nrfiles",
1589         },
1590 #ifdef FIO_HAVE_FALLOCATE
1591         {
1592                 .name   = "fallocate",
1593                 .type   = FIO_OPT_STR,
1594                 .off1   = td_var_offset(fallocate_mode),
1595                 .help   = "Whether pre-allocation is performed when laying out files",
1596                 .def    = "posix",
1597                 .posval = {
1598                           { .ival = "none",
1599                             .oval = FIO_FALLOCATE_NONE,
1600                             .help = "Do not pre-allocate space",
1601                           },
1602                           { .ival = "posix",
1603                             .oval = FIO_FALLOCATE_POSIX,
1604                             .help = "Use posix_fallocate()",
1605                           },
1606 #ifdef FIO_HAVE_LINUX_FALLOCATE
1607                           { .ival = "keep",
1608                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1609                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1610                           },
1611 #endif
1612                           /* Compatibility with former boolean values */
1613                           { .ival = "0",
1614                             .oval = FIO_FALLOCATE_NONE,
1615                             .help = "Alias for 'none'",
1616                           },
1617                           { .ival = "1",
1618                             .oval = FIO_FALLOCATE_POSIX,
1619                             .help = "Alias for 'posix'",
1620                           },
1621                 },
1622         },
1623 #endif  /* FIO_HAVE_FALLOCATE */
1624         {
1625                 .name   = "fadvise_hint",
1626                 .type   = FIO_OPT_BOOL,
1627                 .off1   = td_var_offset(fadvise_hint),
1628                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1629                 .def    = "1",
1630         },
1631         {
1632                 .name   = "fsync",
1633                 .type   = FIO_OPT_INT,
1634                 .off1   = td_var_offset(fsync_blocks),
1635                 .help   = "Issue fsync for writes every given number of blocks",
1636                 .def    = "0",
1637         },
1638         {
1639                 .name   = "fdatasync",
1640                 .type   = FIO_OPT_INT,
1641                 .off1   = td_var_offset(fdatasync_blocks),
1642                 .help   = "Issue fdatasync for writes every given number of blocks",
1643                 .def    = "0",
1644         },
1645         {
1646                 .name   = "write_barrier",
1647                 .type   = FIO_OPT_INT,
1648                 .off1   = td_var_offset(barrier_blocks),
1649                 .help   = "Make every Nth write a barrier write",
1650                 .def    = "0",
1651         },
1652 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1653         {
1654                 .name   = "sync_file_range",
1655                 .posval = {
1656                           { .ival = "wait_before",
1657                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1658                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1659                             .or   = 1,
1660                           },
1661                           { .ival = "write",
1662                             .oval = SYNC_FILE_RANGE_WRITE,
1663                             .help = "SYNC_FILE_RANGE_WRITE",
1664                             .or   = 1,
1665                           },
1666                           {
1667                             .ival = "wait_after",
1668                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1669                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1670                             .or   = 1,
1671                           },
1672                 },
1673                 .type   = FIO_OPT_STR_MULTI,
1674                 .cb     = str_sfr_cb,
1675                 .off1   = td_var_offset(sync_file_range),
1676                 .help   = "Use sync_file_range()",
1677         },
1678 #endif
1679         {
1680                 .name   = "direct",
1681                 .type   = FIO_OPT_BOOL,
1682                 .off1   = td_var_offset(odirect),
1683                 .help   = "Use O_DIRECT IO (negates buffered)",
1684                 .def    = "0",
1685         },
1686         {
1687                 .name   = "buffered",
1688                 .type   = FIO_OPT_BOOL,
1689                 .off1   = td_var_offset(odirect),
1690                 .neg    = 1,
1691                 .help   = "Use buffered IO (negates direct)",
1692                 .def    = "1",
1693         },
1694         {
1695                 .name   = "overwrite",
1696                 .type   = FIO_OPT_BOOL,
1697                 .off1   = td_var_offset(overwrite),
1698                 .help   = "When writing, set whether to overwrite current data",
1699                 .def    = "0",
1700         },
1701         {
1702                 .name   = "loops",
1703                 .type   = FIO_OPT_INT,
1704                 .off1   = td_var_offset(loops),
1705                 .help   = "Number of times to run the job",
1706                 .def    = "1",
1707         },
1708         {
1709                 .name   = "numjobs",
1710                 .type   = FIO_OPT_INT,
1711                 .off1   = td_var_offset(numjobs),
1712                 .help   = "Duplicate this job this many times",
1713                 .def    = "1",
1714         },
1715         {
1716                 .name   = "startdelay",
1717                 .type   = FIO_OPT_STR_VAL_TIME,
1718                 .off1   = td_var_offset(start_delay),
1719                 .help   = "Only start job when this period has passed",
1720                 .def    = "0",
1721         },
1722         {
1723                 .name   = "runtime",
1724                 .alias  = "timeout",
1725                 .type   = FIO_OPT_STR_VAL_TIME,
1726                 .off1   = td_var_offset(timeout),
1727                 .help   = "Stop workload when this amount of time has passed",
1728                 .def    = "0",
1729         },
1730         {
1731                 .name   = "time_based",
1732                 .type   = FIO_OPT_STR_SET,
1733                 .off1   = td_var_offset(time_based),
1734                 .help   = "Keep running until runtime/timeout is met",
1735         },
1736         {
1737                 .name   = "ramp_time",
1738                 .type   = FIO_OPT_STR_VAL_TIME,
1739                 .off1   = td_var_offset(ramp_time),
1740                 .help   = "Ramp up time before measuring performance",
1741         },
1742         {
1743                 .name   = "clocksource",
1744                 .type   = FIO_OPT_STR,
1745                 .cb     = fio_clock_source_cb,
1746                 .off1   = td_var_offset(clocksource),
1747                 .help   = "What type of timing source to use",
1748                 .posval = {
1749                           { .ival = "gettimeofday",
1750                             .oval = CS_GTOD,
1751                             .help = "Use gettimeofday(2) for timing",
1752                           },
1753                           { .ival = "clock_gettime",
1754                             .oval = CS_CGETTIME,
1755                             .help = "Use clock_gettime(2) for timing",
1756                           },
1757 #ifdef ARCH_HAVE_CPU_CLOCK
1758                           { .ival = "cpu",
1759                             .oval = CS_CPUCLOCK,
1760                             .help = "Use CPU private clock",
1761                           },
1762 #endif
1763                 },
1764         },
1765         {
1766                 .name   = "mem",
1767                 .alias  = "iomem",
1768                 .type   = FIO_OPT_STR,
1769                 .cb     = str_mem_cb,
1770                 .off1   = td_var_offset(mem_type),
1771                 .help   = "Backing type for IO buffers",
1772                 .def    = "malloc",
1773                 .posval = {
1774                           { .ival = "malloc",
1775                             .oval = MEM_MALLOC,
1776                             .help = "Use malloc(3) for IO buffers",
1777                           },
1778                           { .ival = "shm",
1779                             .oval = MEM_SHM,
1780                             .help = "Use shared memory segments for IO buffers",
1781                           },
1782 #ifdef FIO_HAVE_HUGETLB
1783                           { .ival = "shmhuge",
1784                             .oval = MEM_SHMHUGE,
1785                             .help = "Like shm, but use huge pages",
1786                           },
1787 #endif
1788                           { .ival = "mmap",
1789                             .oval = MEM_MMAP,
1790                             .help = "Use mmap(2) (file or anon) for IO buffers",
1791                           },
1792 #ifdef FIO_HAVE_HUGETLB
1793                           { .ival = "mmaphuge",
1794                             .oval = MEM_MMAPHUGE,
1795                             .help = "Like mmap, but use huge pages",
1796                           },
1797 #endif
1798                   },
1799         },
1800         {
1801                 .name   = "iomem_align",
1802                 .alias  = "mem_align",
1803                 .type   = FIO_OPT_INT,
1804                 .off1   = td_var_offset(mem_align),
1805                 .minval = 0,
1806                 .help   = "IO memory buffer offset alignment",
1807                 .def    = "0",
1808                 .parent = "iomem",
1809         },
1810         {
1811                 .name   = "verify",
1812                 .type   = FIO_OPT_STR,
1813                 .off1   = td_var_offset(verify),
1814                 .help   = "Verify data written",
1815                 .cb     = str_verify_cb,
1816                 .def    = "0",
1817                 .posval = {
1818                           { .ival = "0",
1819                             .oval = VERIFY_NONE,
1820                             .help = "Don't do IO verification",
1821                           },
1822                           { .ival = "md5",
1823                             .oval = VERIFY_MD5,
1824                             .help = "Use md5 checksums for verification",
1825                           },
1826                           { .ival = "crc64",
1827                             .oval = VERIFY_CRC64,
1828                             .help = "Use crc64 checksums for verification",
1829                           },
1830                           { .ival = "crc32",
1831                             .oval = VERIFY_CRC32,
1832                             .help = "Use crc32 checksums for verification",
1833                           },
1834                           { .ival = "crc32c-intel",
1835                             .oval = VERIFY_CRC32C,
1836                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1837                           },
1838                           { .ival = "crc32c",
1839                             .oval = VERIFY_CRC32C,
1840                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1841                           },
1842                           { .ival = "crc16",
1843                             .oval = VERIFY_CRC16,
1844                             .help = "Use crc16 checksums for verification",
1845                           },
1846                           { .ival = "crc7",
1847                             .oval = VERIFY_CRC7,
1848                             .help = "Use crc7 checksums for verification",
1849                           },
1850                           { .ival = "sha1",
1851                             .oval = VERIFY_SHA1,
1852                             .help = "Use sha1 checksums for verification",
1853                           },
1854                           { .ival = "sha256",
1855                             .oval = VERIFY_SHA256,
1856                             .help = "Use sha256 checksums for verification",
1857                           },
1858                           { .ival = "sha512",
1859                             .oval = VERIFY_SHA512,
1860                             .help = "Use sha512 checksums for verification",
1861                           },
1862                           { .ival = "meta",
1863                             .oval = VERIFY_META,
1864                             .help = "Use io information",
1865                           },
1866                           {
1867                             .ival = "null",
1868                             .oval = VERIFY_NULL,
1869                             .help = "Pretend to verify",
1870                           },
1871                 },
1872         },
1873         {
1874                 .name   = "do_verify",
1875                 .type   = FIO_OPT_BOOL,
1876                 .off1   = td_var_offset(do_verify),
1877                 .help   = "Run verification stage after write",
1878                 .def    = "1",
1879                 .parent = "verify",
1880         },
1881         {
1882                 .name   = "verifysort",
1883                 .type   = FIO_OPT_BOOL,
1884                 .off1   = td_var_offset(verifysort),
1885                 .help   = "Sort written verify blocks for read back",
1886                 .def    = "1",
1887                 .parent = "verify",
1888         },
1889         {
1890                 .name   = "verify_interval",
1891                 .type   = FIO_OPT_INT,
1892                 .off1   = td_var_offset(verify_interval),
1893                 .minval = 2 * sizeof(struct verify_header),
1894                 .help   = "Store verify buffer header every N bytes",
1895                 .parent = "verify",
1896         },
1897         {
1898                 .name   = "verify_offset",
1899                 .type   = FIO_OPT_INT,
1900                 .help   = "Offset verify header location by N bytes",
1901                 .def    = "0",
1902                 .cb     = str_verify_offset_cb,
1903                 .parent = "verify",
1904         },
1905         {
1906                 .name   = "verify_pattern",
1907                 .type   = FIO_OPT_STR,
1908                 .cb     = str_verify_pattern_cb,
1909                 .help   = "Fill pattern for IO buffers",
1910                 .parent = "verify",
1911         },
1912         {
1913                 .name   = "verify_fatal",
1914                 .type   = FIO_OPT_BOOL,
1915                 .off1   = td_var_offset(verify_fatal),
1916                 .def    = "0",
1917                 .help   = "Exit on a single verify failure, don't continue",
1918                 .parent = "verify",
1919         },
1920         {
1921                 .name   = "verify_dump",
1922                 .type   = FIO_OPT_BOOL,
1923                 .off1   = td_var_offset(verify_dump),
1924                 .def    = "0",
1925                 .help   = "Dump contents of good and bad blocks on failure",
1926                 .parent = "verify",
1927         },
1928         {
1929                 .name   = "verify_async",
1930                 .type   = FIO_OPT_INT,
1931                 .off1   = td_var_offset(verify_async),
1932                 .def    = "0",
1933                 .help   = "Number of async verifier threads to use",
1934                 .parent = "verify",
1935         },
1936         {
1937                 .name   = "verify_backlog",
1938                 .type   = FIO_OPT_STR_VAL,
1939                 .off1   = td_var_offset(verify_backlog),
1940                 .help   = "Verify after this number of blocks are written",
1941                 .parent = "verify",
1942         },
1943         {
1944                 .name   = "verify_backlog_batch",
1945                 .type   = FIO_OPT_INT,
1946                 .off1   = td_var_offset(verify_batch),
1947                 .help   = "Verify this number of IO blocks",
1948                 .parent = "verify",
1949         },
1950 #ifdef FIO_HAVE_CPU_AFFINITY
1951         {
1952                 .name   = "verify_async_cpus",
1953                 .type   = FIO_OPT_STR,
1954                 .cb     = str_verify_cpus_allowed_cb,
1955                 .help   = "Set CPUs allowed for async verify threads",
1956                 .parent = "verify_async",
1957         },
1958 #endif
1959 #ifdef FIO_HAVE_TRIM
1960         {
1961                 .name   = "trim_percentage",
1962                 .type   = FIO_OPT_INT,
1963                 .cb     = str_verify_trim_cb,
1964                 .maxval = 100,
1965                 .help   = "Number of verify blocks to discard/trim",
1966                 .parent = "verify",
1967                 .def    = "0",
1968         },
1969         {
1970                 .name   = "trim_verify_zero",
1971                 .type   = FIO_OPT_INT,
1972                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1973                 .off1   = td_var_offset(trim_zero),
1974                 .parent = "trim_percentage",
1975                 .def    = "1",
1976         },
1977         {
1978                 .name   = "trim_backlog",
1979                 .type   = FIO_OPT_STR_VAL,
1980                 .off1   = td_var_offset(trim_backlog),
1981                 .help   = "Trim after this number of blocks are written",
1982                 .parent = "trim_percentage",
1983         },
1984         {
1985                 .name   = "trim_backlog_batch",
1986                 .type   = FIO_OPT_INT,
1987                 .off1   = td_var_offset(trim_batch),
1988                 .help   = "Trim this number of IO blocks",
1989                 .parent = "trim_percentage",
1990         },
1991 #endif
1992         {
1993                 .name   = "write_iolog",
1994                 .type   = FIO_OPT_STR_STORE,
1995                 .off1   = td_var_offset(write_iolog_file),
1996                 .help   = "Store IO pattern to file",
1997         },
1998         {
1999                 .name   = "read_iolog",
2000                 .type   = FIO_OPT_STR_STORE,
2001                 .off1   = td_var_offset(read_iolog_file),
2002                 .help   = "Playback IO pattern from file",
2003         },
2004         {
2005                 .name   = "replay_no_stall",
2006                 .type   = FIO_OPT_INT,
2007                 .off1   = td_var_offset(no_stall),
2008                 .def    = "0",
2009                 .parent = "read_iolog",
2010                 .help   = "Playback IO pattern file as fast as possible without stalls",
2011         },
2012         {
2013                 .name   = "replay_redirect",
2014                 .type   = FIO_OPT_STR_STORE,
2015                 .off1   = td_var_offset(replay_redirect),
2016                 .parent = "read_iolog",
2017                 .help   = "Replay all I/O onto this device, regardless of trace device",
2018         },
2019         {
2020                 .name   = "exec_prerun",
2021                 .type   = FIO_OPT_STR_STORE,
2022                 .off1   = td_var_offset(exec_prerun),
2023                 .help   = "Execute this file prior to running job",
2024         },
2025         {
2026                 .name   = "exec_postrun",
2027                 .type   = FIO_OPT_STR_STORE,
2028                 .off1   = td_var_offset(exec_postrun),
2029                 .help   = "Execute this file after running job",
2030         },
2031 #ifdef FIO_HAVE_IOSCHED_SWITCH
2032         {
2033                 .name   = "ioscheduler",
2034                 .type   = FIO_OPT_STR_STORE,
2035                 .off1   = td_var_offset(ioscheduler),
2036                 .help   = "Use this IO scheduler on the backing device",
2037         },
2038 #endif
2039         {
2040                 .name   = "zonesize",
2041                 .type   = FIO_OPT_STR_VAL,
2042                 .off1   = td_var_offset(zone_size),
2043                 .help   = "Amount of data to read per zone",
2044                 .def    = "0",
2045         },
2046         {
2047                 .name   = "zonerange",
2048                 .type   = FIO_OPT_STR_VAL,
2049                 .off1   = td_var_offset(zone_range),
2050                 .help   = "Give size of an IO zone",
2051                 .def    = "0",
2052         },
2053         {
2054                 .name   = "zoneskip",
2055                 .type   = FIO_OPT_STR_VAL,
2056                 .off1   = td_var_offset(zone_skip),
2057                 .help   = "Space between IO zones",
2058                 .def    = "0",
2059         },
2060         {
2061                 .name   = "lockmem",
2062                 .type   = FIO_OPT_STR_VAL,
2063                 .cb     = str_lockmem_cb,
2064                 .help   = "Lock down this amount of memory",
2065                 .def    = "0",
2066         },
2067         {
2068                 .name   = "rwmixread",
2069                 .type   = FIO_OPT_INT,
2070                 .cb     = str_rwmix_read_cb,
2071                 .maxval = 100,
2072                 .help   = "Percentage of mixed workload that is reads",
2073                 .def    = "50",
2074         },
2075         {
2076                 .name   = "rwmixwrite",
2077                 .type   = FIO_OPT_INT,
2078                 .cb     = str_rwmix_write_cb,
2079                 .maxval = 100,
2080                 .help   = "Percentage of mixed workload that is writes",
2081                 .def    = "50",
2082         },
2083         {
2084                 .name   = "rwmixcycle",
2085                 .type   = FIO_OPT_DEPRECATED,
2086         },
2087         {
2088                 .name   = "nice",
2089                 .type   = FIO_OPT_INT,
2090                 .off1   = td_var_offset(nice),
2091                 .help   = "Set job CPU nice value",
2092                 .minval = -19,
2093                 .maxval = 20,
2094                 .def    = "0",
2095         },
2096 #ifdef FIO_HAVE_IOPRIO
2097         {
2098                 .name   = "prio",
2099                 .type   = FIO_OPT_INT,
2100                 .cb     = str_prio_cb,
2101                 .help   = "Set job IO priority value",
2102                 .minval = 0,
2103                 .maxval = 7,
2104         },
2105         {
2106                 .name   = "prioclass",
2107                 .type   = FIO_OPT_INT,
2108                 .cb     = str_prioclass_cb,
2109                 .help   = "Set job IO priority class",
2110                 .minval = 0,
2111                 .maxval = 3,
2112         },
2113 #endif
2114         {
2115                 .name   = "thinktime",
2116                 .type   = FIO_OPT_INT,
2117                 .off1   = td_var_offset(thinktime),
2118                 .help   = "Idle time between IO buffers (usec)",
2119                 .def    = "0",
2120         },
2121         {
2122                 .name   = "thinktime_spin",
2123                 .type   = FIO_OPT_INT,
2124                 .off1   = td_var_offset(thinktime_spin),
2125                 .help   = "Start think time by spinning this amount (usec)",
2126                 .def    = "0",
2127                 .parent = "thinktime",
2128         },
2129         {
2130                 .name   = "thinktime_blocks",
2131                 .type   = FIO_OPT_INT,
2132                 .off1   = td_var_offset(thinktime_blocks),
2133                 .help   = "IO buffer period between 'thinktime'",
2134                 .def    = "1",
2135                 .parent = "thinktime",
2136         },
2137         {
2138                 .name   = "rate",
2139                 .type   = FIO_OPT_INT,
2140                 .off1   = td_var_offset(rate[DDIR_READ]),
2141                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2142                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2143                 .help   = "Set bandwidth rate",
2144         },
2145         {
2146                 .name   = "ratemin",
2147                 .type   = FIO_OPT_INT,
2148                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2149                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2150                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2151                 .help   = "Job must meet this rate or it will be shutdown",
2152                 .parent = "rate",
2153         },
2154         {
2155                 .name   = "rate_iops",
2156                 .type   = FIO_OPT_INT,
2157                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2158                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2159                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2160                 .help   = "Limit IO used to this number of IO operations/sec",
2161         },
2162         {
2163                 .name   = "rate_iops_min",
2164                 .type   = FIO_OPT_INT,
2165                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2166                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2167                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2168                 .help   = "Job must meet this rate or it will be shut down",
2169                 .parent = "rate_iops",
2170         },
2171         {
2172                 .name   = "ratecycle",
2173                 .type   = FIO_OPT_INT,
2174                 .off1   = td_var_offset(ratecycle),
2175                 .help   = "Window average for rate limits (msec)",
2176                 .def    = "1000",
2177                 .parent = "rate",
2178         },
2179         {
2180                 .name   = "max_latency",
2181                 .type   = FIO_OPT_INT,
2182                 .off1   = td_var_offset(max_latency),
2183                 .help   = "Maximum tolerated IO latency (usec)",
2184         },
2185         {
2186                 .name   = "invalidate",
2187                 .type   = FIO_OPT_BOOL,
2188                 .off1   = td_var_offset(invalidate_cache),
2189                 .help   = "Invalidate buffer/page cache prior to running job",
2190                 .def    = "1",
2191         },
2192         {
2193                 .name   = "sync",
2194                 .type   = FIO_OPT_BOOL,
2195                 .off1   = td_var_offset(sync_io),
2196                 .help   = "Use O_SYNC for buffered writes",
2197                 .def    = "0",
2198                 .parent = "buffered",
2199         },
2200         {
2201                 .name   = "bwavgtime",
2202                 .type   = FIO_OPT_INT,
2203                 .off1   = td_var_offset(bw_avg_time),
2204                 .help   = "Time window over which to calculate bandwidth"
2205                           " (msec)",
2206                 .def    = "500",
2207                 .parent = "write_bw_log",
2208         },
2209         {
2210                 .name   = "iopsavgtime",
2211                 .type   = FIO_OPT_INT,
2212                 .off1   = td_var_offset(iops_avg_time),
2213                 .help   = "Time window over which to calculate IOPS (msec)",
2214                 .def    = "500",
2215                 .parent = "write_iops_log",
2216         },
2217         {
2218                 .name   = "create_serialize",
2219                 .type   = FIO_OPT_BOOL,
2220                 .off1   = td_var_offset(create_serialize),
2221                 .help   = "Serialize creating of job files",
2222                 .def    = "1",
2223         },
2224         {
2225                 .name   = "create_fsync",
2226                 .type   = FIO_OPT_BOOL,
2227                 .off1   = td_var_offset(create_fsync),
2228                 .help   = "fsync file after creation",
2229                 .def    = "1",
2230         },
2231         {
2232                 .name   = "create_on_open",
2233                 .type   = FIO_OPT_BOOL,
2234                 .off1   = td_var_offset(create_on_open),
2235                 .help   = "Create files when they are opened for IO",
2236                 .def    = "0",
2237         },
2238         {
2239                 .name   = "create_only",
2240                 .type   = FIO_OPT_BOOL,
2241                 .off1   = td_var_offset(create_only),
2242                 .help   = "Only perform file creation phase",
2243                 .def    = "0",
2244         },
2245         {
2246                 .name   = "pre_read",
2247                 .type   = FIO_OPT_BOOL,
2248                 .off1   = td_var_offset(pre_read),
2249                 .help   = "Pre-read files before starting official testing",
2250                 .def    = "0",
2251         },
2252         {
2253                 .name   = "cpuload",
2254                 .type   = FIO_OPT_INT,
2255                 .off1   = td_var_offset(cpuload),
2256                 .help   = "Use this percentage of CPU",
2257         },
2258         {
2259                 .name   = "cpuchunks",
2260                 .type   = FIO_OPT_INT,
2261                 .off1   = td_var_offset(cpucycle),
2262                 .help   = "Length of the CPU burn cycles (usecs)",
2263                 .def    = "50000",
2264                 .parent = "cpuload",
2265         },
2266 #ifdef FIO_HAVE_CPU_AFFINITY
2267         {
2268                 .name   = "cpumask",
2269                 .type   = FIO_OPT_INT,
2270                 .cb     = str_cpumask_cb,
2271                 .help   = "CPU affinity mask",
2272         },
2273         {
2274                 .name   = "cpus_allowed",
2275                 .type   = FIO_OPT_STR,
2276                 .cb     = str_cpus_allowed_cb,
2277                 .help   = "Set CPUs allowed",
2278         },
2279 #endif
2280 #ifdef FIO_HAVE_LIBNUMA
2281         {
2282                 .name   = "numa_cpu_nodes",
2283                 .type   = FIO_OPT_STR,
2284                 .cb     = str_numa_cpunodes_cb,
2285                 .help   = "NUMA CPU nodes bind",
2286         },
2287         {
2288                 .name   = "numa_mem_policy",
2289                 .type   = FIO_OPT_STR,
2290                 .cb     = str_numa_mpol_cb,
2291                 .help   = "NUMA memory policy setup",
2292         },
2293 #endif
2294         {
2295                 .name   = "end_fsync",
2296                 .type   = FIO_OPT_BOOL,
2297                 .off1   = td_var_offset(end_fsync),
2298                 .help   = "Include fsync at the end of job",
2299                 .def    = "0",
2300         },
2301         {
2302                 .name   = "fsync_on_close",
2303                 .type   = FIO_OPT_BOOL,
2304                 .off1   = td_var_offset(fsync_on_close),
2305                 .help   = "fsync files on close",
2306                 .def    = "0",
2307         },
2308         {
2309                 .name   = "unlink",
2310                 .type   = FIO_OPT_BOOL,
2311                 .off1   = td_var_offset(unlink),
2312                 .help   = "Unlink created files after job has completed",
2313                 .def    = "0",
2314         },
2315         {
2316                 .name   = "exitall",
2317                 .type   = FIO_OPT_STR_SET,
2318                 .cb     = str_exitall_cb,
2319                 .help   = "Terminate all jobs when one exits",
2320         },
2321         {
2322                 .name   = "stonewall",
2323                 .alias  = "wait_for_previous",
2324                 .type   = FIO_OPT_STR_SET,
2325                 .off1   = td_var_offset(stonewall),
2326                 .help   = "Insert a hard barrier between this job and previous",
2327         },
2328         {
2329                 .name   = "new_group",
2330                 .type   = FIO_OPT_STR_SET,
2331                 .off1   = td_var_offset(new_group),
2332                 .help   = "Mark the start of a new group (for reporting)",
2333         },
2334         {
2335                 .name   = "thread",
2336                 .type   = FIO_OPT_STR_SET,
2337                 .off1   = td_var_offset(use_thread),
2338                 .help   = "Use threads instead of forks",
2339         },
2340         {
2341                 .name   = "write_bw_log",
2342                 .type   = FIO_OPT_STR,
2343                 .off1   = td_var_offset(write_bw_log),
2344                 .cb     = str_write_bw_log_cb,
2345                 .help   = "Write log of bandwidth during run",
2346         },
2347         {
2348                 .name   = "write_lat_log",
2349                 .type   = FIO_OPT_STR,
2350                 .off1   = td_var_offset(write_lat_log),
2351                 .cb     = str_write_lat_log_cb,
2352                 .help   = "Write log of latency during run",
2353         },
2354         {
2355                 .name   = "write_iops_log",
2356                 .type   = FIO_OPT_STR,
2357                 .off1   = td_var_offset(write_iops_log),
2358                 .cb     = str_write_iops_log_cb,
2359                 .help   = "Write log of IOPS during run",
2360         },
2361         {
2362                 .name   = "log_avg_msec",
2363                 .type   = FIO_OPT_INT,
2364                 .off1   = td_var_offset(log_avg_msec),
2365                 .help   = "Average bw/iops/lat logs over this period of time",
2366                 .def    = "0",
2367         },
2368         {
2369                 .name   = "hugepage-size",
2370                 .type   = FIO_OPT_INT,
2371                 .off1   = td_var_offset(hugepage_size),
2372                 .help   = "When using hugepages, specify size of each page",
2373                 .def    = __fio_stringify(FIO_HUGE_PAGE),
2374         },
2375         {
2376                 .name   = "group_reporting",
2377                 .type   = FIO_OPT_STR_SET,
2378                 .off1   = td_var_offset(group_reporting),
2379                 .help   = "Do reporting on a per-group basis",
2380         },
2381         {
2382                 .name   = "zero_buffers",
2383                 .type   = FIO_OPT_STR_SET,
2384                 .off1   = td_var_offset(zero_buffers),
2385                 .help   = "Init IO buffers to all zeroes",
2386         },
2387         {
2388                 .name   = "refill_buffers",
2389                 .type   = FIO_OPT_STR_SET,
2390                 .off1   = td_var_offset(refill_buffers),
2391                 .help   = "Refill IO buffers on every IO submit",
2392         },
2393         {
2394                 .name   = "scramble_buffers",
2395                 .type   = FIO_OPT_BOOL,
2396                 .off1   = td_var_offset(scramble_buffers),
2397                 .help   = "Slightly scramble buffers on every IO submit",
2398                 .def    = "1",
2399         },
2400         {
2401                 .name   = "buffer_compress_percentage",
2402                 .type   = FIO_OPT_INT,
2403                 .off1   = td_var_offset(compress_percentage),
2404                 .maxval = 100,
2405                 .minval = 1,
2406                 .help   = "How compressible the buffer is (approximately)",
2407         },
2408         {
2409                 .name   = "buffer_compress_chunk",
2410                 .type   = FIO_OPT_INT,
2411                 .off1   = td_var_offset(compress_chunk),
2412                 .parent = "buffer_compress_percentage",
2413                 .help   = "Size of compressible region in buffer",
2414         },
2415         {
2416                 .name   = "clat_percentiles",
2417                 .type   = FIO_OPT_BOOL,
2418                 .off1   = td_var_offset(clat_percentiles),
2419                 .help   = "Enable the reporting of completion latency percentiles",
2420                 .def    = "1",
2421         },
2422         {
2423                 .name   = "percentile_list",
2424                 .type   = FIO_OPT_FLOAT_LIST,
2425                 .off1   = td_var_offset(percentile_list),
2426                 .off2   = td_var_offset(overwrite_plist),
2427                 .help   = "Specify a custom list of percentiles to report",
2428                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2429                 .minfp  = 0.0,
2430                 .maxfp  = 100.0,
2431         },
2432
2433 #ifdef FIO_HAVE_DISK_UTIL
2434         {
2435                 .name   = "disk_util",
2436                 .type   = FIO_OPT_BOOL,
2437                 .off1   = td_var_offset(do_disk_util),
2438                 .help   = "Log disk utilization statistics",
2439                 .def    = "1",
2440         },
2441 #endif
2442         {
2443                 .name   = "gtod_reduce",
2444                 .type   = FIO_OPT_BOOL,
2445                 .help   = "Greatly reduce number of gettimeofday() calls",
2446                 .cb     = str_gtod_reduce_cb,
2447                 .def    = "0",
2448         },
2449         {
2450                 .name   = "disable_lat",
2451                 .type   = FIO_OPT_BOOL,
2452                 .off1   = td_var_offset(disable_lat),
2453                 .help   = "Disable latency numbers",
2454                 .parent = "gtod_reduce",
2455                 .def    = "0",
2456         },
2457         {
2458                 .name   = "disable_clat",
2459                 .type   = FIO_OPT_BOOL,
2460                 .off1   = td_var_offset(disable_clat),
2461                 .help   = "Disable completion latency numbers",
2462                 .parent = "gtod_reduce",
2463                 .def    = "0",
2464         },
2465         {
2466                 .name   = "disable_slat",
2467                 .type   = FIO_OPT_BOOL,
2468                 .off1   = td_var_offset(disable_slat),
2469                 .help   = "Disable submission latency numbers",
2470                 .parent = "gtod_reduce",
2471                 .def    = "0",
2472         },
2473         {
2474                 .name   = "disable_bw_measurement",
2475                 .type   = FIO_OPT_BOOL,
2476                 .off1   = td_var_offset(disable_bw),
2477                 .help   = "Disable bandwidth logging",
2478                 .parent = "gtod_reduce",
2479                 .def    = "0",
2480         },
2481         {
2482                 .name   = "gtod_cpu",
2483                 .type   = FIO_OPT_INT,
2484                 .cb     = str_gtod_cpu_cb,
2485                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2486                 .verify = gtod_cpu_verify,
2487         },
2488         {
2489                 .name   = "continue_on_error",
2490                 .type   = FIO_OPT_STR,
2491                 .off1   = td_var_offset(continue_on_error),
2492                 .help   = "Continue on non-fatal errors during IO",
2493                 .def    = "none",
2494                 .posval = {
2495                           { .ival = "none",
2496                             .oval = ERROR_TYPE_NONE,
2497                             .help = "Exit when an error is encountered",
2498                           },
2499                           { .ival = "read",
2500                             .oval = ERROR_TYPE_READ,
2501                             .help = "Continue on read errors only",
2502                           },
2503                           { .ival = "write",
2504                             .oval = ERROR_TYPE_WRITE,
2505                             .help = "Continue on write errors only",
2506                           },
2507                           { .ival = "io",
2508                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2509                             .help = "Continue on any IO errors",
2510                           },
2511                           { .ival = "verify",
2512                             .oval = ERROR_TYPE_VERIFY,
2513                             .help = "Continue on verify errors only",
2514                           },
2515                           { .ival = "all",
2516                             .oval = ERROR_TYPE_ANY,
2517                             .help = "Continue on all io and verify errors",
2518                           },
2519                           { .ival = "0",
2520                             .oval = ERROR_TYPE_NONE,
2521                             .help = "Alias for 'none'",
2522                           },
2523                           { .ival = "1",
2524                             .oval = ERROR_TYPE_ANY,
2525                             .help = "Alias for 'all'",
2526                           },
2527                 },
2528         },
2529         {
2530                 .name   = "ignore_error",
2531                 .type   = FIO_OPT_STR,
2532                 .cb     = str_ignore_error_cb,
2533                 .help   = "Set a specific list of errors to ignore",
2534                 .parent = "rw",
2535         },
2536         {
2537                 .name   = "error_dump",
2538                 .type   = FIO_OPT_BOOL,
2539                 .off1   = td_var_offset(error_dump),
2540                 .def    = "0",
2541                 .help   = "Dump info on each error",
2542         },
2543
2544         {
2545                 .name   = "profile",
2546                 .type   = FIO_OPT_STR_STORE,
2547                 .off1   = td_var_offset(profile),
2548                 .help   = "Select a specific builtin performance test",
2549         },
2550         {
2551                 .name   = "cgroup",
2552                 .type   = FIO_OPT_STR_STORE,
2553                 .off1   = td_var_offset(cgroup),
2554                 .help   = "Add job to cgroup of this name",
2555         },
2556         {
2557                 .name   = "cgroup_weight",
2558                 .type   = FIO_OPT_INT,
2559                 .off1   = td_var_offset(cgroup_weight),
2560                 .help   = "Use given weight for cgroup",
2561                 .minval = 100,
2562                 .maxval = 1000,
2563         },
2564         {
2565                 .name   = "cgroup_nodelete",
2566                 .type   = FIO_OPT_BOOL,
2567                 .off1   = td_var_offset(cgroup_nodelete),
2568                 .help   = "Do not delete cgroups after job completion",
2569                 .def    = "0",
2570         },
2571         {
2572                 .name   = "uid",
2573                 .type   = FIO_OPT_INT,
2574                 .off1   = td_var_offset(uid),
2575                 .help   = "Run job with this user ID",
2576         },
2577         {
2578                 .name   = "gid",
2579                 .type   = FIO_OPT_INT,
2580                 .off1   = td_var_offset(gid),
2581                 .help   = "Run job with this group ID",
2582         },
2583         {
2584                 .name   = "flow_id",
2585                 .type   = FIO_OPT_INT,
2586                 .off1   = td_var_offset(flow_id),
2587                 .help   = "The flow index ID to use",
2588                 .def    = "0",
2589         },
2590         {
2591                 .name   = "flow",
2592                 .type   = FIO_OPT_INT,
2593                 .off1   = td_var_offset(flow),
2594                 .help   = "Weight for flow control of this job",
2595                 .parent = "flow_id",
2596                 .def    = "0",
2597         },
2598         {
2599                 .name   = "flow_watermark",
2600                 .type   = FIO_OPT_INT,
2601                 .off1   = td_var_offset(flow_watermark),
2602                 .help   = "High watermark for flow control. This option"
2603                         " should be set to the same value for all threads"
2604                         " with non-zero flow.",
2605                 .parent = "flow_id",
2606                 .def    = "1024",
2607         },
2608         {
2609                 .name   = "flow_sleep",
2610                 .type   = FIO_OPT_INT,
2611                 .off1   = td_var_offset(flow_sleep),
2612                 .help   = "How many microseconds to sleep after being held"
2613                         " back by the flow control mechanism",
2614                 .parent = "flow_id",
2615                 .def    = "0",
2616         },
2617         {
2618                 .name = NULL,
2619         },
2620 };
2621
2622 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2623                         const char *name, int val)
2624 {
2625         lopt->name = (char *) name;
2626         lopt->val = val;
2627         if (o->type == FIO_OPT_STR_SET)
2628                 lopt->has_arg = no_argument;
2629         else
2630                 lopt->has_arg = required_argument;
2631 }
2632
2633 static void options_to_lopts(struct fio_option *opts,
2634                               struct option *long_options,
2635                               int i, int option_type)
2636 {
2637         struct fio_option *o = &opts[0];
2638         while (o->name) {
2639                 add_to_lopt(&long_options[i], o, o->name, option_type);
2640                 if (o->alias) {
2641                         i++;
2642                         add_to_lopt(&long_options[i], o, o->alias, option_type);
2643                 }
2644
2645                 i++;
2646                 o++;
2647                 assert(i < FIO_NR_OPTIONS);
2648         }
2649 }
2650
2651 void fio_options_set_ioengine_opts(struct option *long_options,
2652                                    struct thread_data *td)
2653 {
2654         unsigned int i;
2655
2656         i = 0;
2657         while (long_options[i].name) {
2658                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2659                         memset(&long_options[i], 0, sizeof(*long_options));
2660                         break;
2661                 }
2662                 i++;
2663         }
2664
2665         /*
2666          * Just clear out the prior ioengine options.
2667          */
2668         if (!td || !td->eo)
2669                 return;
2670
2671         options_to_lopts(td->io_ops->options, long_options, i,
2672                          FIO_GETOPT_IOENGINE);
2673 }
2674
2675 void fio_options_dup_and_init(struct option *long_options)
2676 {
2677         unsigned int i;
2678
2679         options_init(options);
2680
2681         i = 0;
2682         while (long_options[i].name)
2683                 i++;
2684
2685         options_to_lopts(options, long_options, i, FIO_GETOPT_JOB);
2686 }
2687
2688 struct fio_keyword {
2689         const char *word;
2690         const char *desc;
2691         char *replace;
2692 };
2693
2694 static struct fio_keyword fio_keywords[] = {
2695         {
2696                 .word   = "$pagesize",
2697                 .desc   = "Page size in the system",
2698         },
2699         {
2700                 .word   = "$mb_memory",
2701                 .desc   = "Megabytes of memory online",
2702         },
2703         {
2704                 .word   = "$ncpus",
2705                 .desc   = "Number of CPUs online in the system",
2706         },
2707         {
2708                 .word   = NULL,
2709         },
2710 };
2711
2712 void fio_keywords_init(void)
2713 {
2714         unsigned long long mb_memory;
2715         char buf[128];
2716         long l;
2717
2718         sprintf(buf, "%lu", (unsigned long) page_size);
2719         fio_keywords[0].replace = strdup(buf);
2720
2721         mb_memory = os_phys_mem() / (1024 * 1024);
2722         sprintf(buf, "%llu", mb_memory);
2723         fio_keywords[1].replace = strdup(buf);
2724
2725         l = cpus_online();
2726         sprintf(buf, "%lu", l);
2727         fio_keywords[2].replace = strdup(buf);
2728 }
2729
2730 #define BC_APP          "bc"
2731
2732 static char *bc_calc(char *str)
2733 {
2734         char buf[128], *tmp;
2735         FILE *f;
2736         int ret;
2737
2738         /*
2739          * No math, just return string
2740          */
2741         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2742              !strchr(str, '/')) || strchr(str, '\''))
2743                 return str;
2744
2745         /*
2746          * Split option from value, we only need to calculate the value
2747          */
2748         tmp = strchr(str, '=');
2749         if (!tmp)
2750                 return str;
2751
2752         tmp++;
2753
2754         /*
2755          * Prevent buffer overflows; such a case isn't reasonable anyway
2756          */
2757         if (strlen(str) >= 128 || strlen(tmp) > 100)
2758                 return str;
2759
2760         sprintf(buf, "which %s > /dev/null", BC_APP);
2761         if (system(buf)) {
2762                 log_err("fio: bc is needed for performing math\n");
2763                 return NULL;
2764         }
2765
2766         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2767         f = popen(buf, "r");
2768         if (!f) {
2769                 return NULL;
2770         }
2771
2772         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2773         if (ret <= 0) {
2774                 return NULL;
2775         }
2776
2777         pclose(f);
2778         buf[(tmp - str) + ret - 1] = '\0';
2779         memcpy(buf, str, tmp - str);
2780         free(str);
2781         return strdup(buf);
2782 }
2783
2784 /*
2785  * Return a copy of the input string with substrings of the form ${VARNAME}
2786  * substituted with the value of the environment variable VARNAME.  The
2787  * substitution always occurs, even if VARNAME is empty or the corresponding
2788  * environment variable undefined.
2789  */
2790 static char *option_dup_subs(const char *opt)
2791 {
2792         char out[OPT_LEN_MAX+1];
2793         char in[OPT_LEN_MAX+1];
2794         char *outptr = out;
2795         char *inptr = in;
2796         char *ch1, *ch2, *env;
2797         ssize_t nchr = OPT_LEN_MAX;
2798         size_t envlen;
2799
2800         if (strlen(opt) + 1 > OPT_LEN_MAX) {
2801                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2802                 return NULL;
2803         }
2804
2805         in[OPT_LEN_MAX] = '\0';
2806         strncpy(in, opt, OPT_LEN_MAX);
2807
2808         while (*inptr && nchr > 0) {
2809                 if (inptr[0] == '$' && inptr[1] == '{') {
2810                         ch2 = strchr(inptr, '}');
2811                         if (ch2 && inptr+1 < ch2) {
2812                                 ch1 = inptr+2;
2813                                 inptr = ch2+1;
2814                                 *ch2 = '\0';
2815
2816                                 env = getenv(ch1);
2817                                 if (env) {
2818                                         envlen = strlen(env);
2819                                         if (envlen <= nchr) {
2820                                                 memcpy(outptr, env, envlen);
2821                                                 outptr += envlen;
2822                                                 nchr -= envlen;
2823                                         }
2824                                 }
2825
2826                                 continue;
2827                         }
2828                 }
2829
2830                 *outptr++ = *inptr++;
2831                 --nchr;
2832         }
2833
2834         *outptr = '\0';
2835         return strdup(out);
2836 }
2837
2838 /*
2839  * Look for reserved variable names and replace them with real values
2840  */
2841 static char *fio_keyword_replace(char *opt)
2842 {
2843         char *s;
2844         int i;
2845         int docalc = 0;
2846
2847         for (i = 0; fio_keywords[i].word != NULL; i++) {
2848                 struct fio_keyword *kw = &fio_keywords[i];
2849
2850                 while ((s = strstr(opt, kw->word)) != NULL) {
2851                         char *new = malloc(strlen(opt) + 1);
2852                         char *o_org = opt;
2853                         int olen = s - opt;
2854                         int len;
2855
2856                         /*
2857                          * Copy part of the string before the keyword and
2858                          * sprintf() the replacement after it.
2859                          */
2860                         memcpy(new, opt, olen);
2861                         len = sprintf(new + olen, "%s", kw->replace);
2862
2863                         /*
2864                          * If there's more in the original string, copy that
2865                          * in too
2866                          */
2867                         opt += strlen(kw->word) + olen;
2868                         if (strlen(opt))
2869                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2870
2871                         /*
2872                          * replace opt and free the old opt
2873                          */
2874                         opt = new;
2875                         free(o_org);
2876
2877                         docalc = 1;
2878                 }
2879         }
2880
2881         /*
2882          * Check for potential math and invoke bc, if possible
2883          */
2884         if (docalc)
2885                 opt = bc_calc(opt);
2886
2887         return opt;
2888 }
2889
2890 static char **dup_and_sub_options(char **opts, int num_opts)
2891 {
2892         int i;
2893         char **opts_copy = malloc(num_opts * sizeof(*opts));
2894         for (i = 0; i < num_opts; i++) {
2895                 opts_copy[i] = option_dup_subs(opts[i]);
2896                 if (!opts_copy[i])
2897                         continue;
2898                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2899         }
2900         return opts_copy;
2901 }
2902
2903 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2904 {
2905         int i, ret, unknown;
2906         char **opts_copy;
2907
2908         sort_options(opts, options, num_opts);
2909         opts_copy = dup_and_sub_options(opts, num_opts);
2910
2911         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2912                 struct fio_option *o;
2913                 int newret = parse_option(opts_copy[i], opts[i], options, &o,
2914                                           td);
2915
2916                 if (opts_copy[i]) {
2917                         if (newret && !o) {
2918                                 unknown++;
2919                                 continue;
2920                         }
2921                         free(opts_copy[i]);
2922                         opts_copy[i] = NULL;
2923                 }
2924
2925                 ret |= newret;
2926         }
2927
2928         if (unknown) {
2929                 ret |= ioengine_load(td);
2930                 if (td->eo) {
2931                         sort_options(opts_copy, td->io_ops->options, num_opts);
2932                         opts = opts_copy;
2933                 }
2934                 for (i = 0; i < num_opts; i++) {
2935                         struct fio_option *o = NULL;
2936                         int newret = 1;
2937                         if (!opts_copy[i])
2938                                 continue;
2939
2940                         if (td->eo)
2941                                 newret = parse_option(opts_copy[i], opts[i],
2942                                                       td->io_ops->options, &o,
2943                                                       td->eo);
2944
2945                         ret |= newret;
2946                         if (!o)
2947                                 log_err("Bad option <%s>\n", opts[i]);
2948
2949                         free(opts_copy[i]);
2950                         opts_copy[i] = NULL;
2951                 }
2952         }
2953
2954         free(opts_copy);
2955         return ret;
2956 }
2957
2958 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2959 {
2960         return parse_cmd_option(opt, val, options, td);
2961 }
2962
2963 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
2964                                 char *val)
2965 {
2966         return parse_cmd_option(opt, val, td->io_ops->options, td);
2967 }
2968
2969 void fio_fill_default_options(struct thread_data *td)
2970 {
2971         fill_default_options(td, options);
2972 }
2973
2974 int fio_show_option_help(const char *opt)
2975 {
2976         return show_cmd_help(options, opt);
2977 }
2978
2979 void options_mem_dupe(void *data, struct fio_option *options)
2980 {
2981         struct fio_option *o;
2982         char **ptr;
2983
2984         for (o = &options[0]; o->name; o++) {
2985                 if (o->type != FIO_OPT_STR_STORE)
2986                         continue;
2987
2988                 ptr = td_var(data, o->off1);
2989                 if (*ptr)
2990                         *ptr = strdup(*ptr);
2991         }
2992 }
2993
2994 /*
2995  * dupe FIO_OPT_STR_STORE options
2996  */
2997 void fio_options_mem_dupe(struct thread_data *td)
2998 {
2999         options_mem_dupe(&td->o, options);
3000
3001         if (td->eo && td->io_ops) {
3002                 void *oldeo = td->eo;
3003
3004                 td->eo = malloc(td->io_ops->option_struct_size);
3005                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
3006                 options_mem_dupe(td->eo, td->io_ops->options);
3007         }
3008 }
3009
3010 unsigned int fio_get_kb_base(void *data)
3011 {
3012         struct thread_data *td = data;
3013         unsigned int kb_base = 0;
3014
3015         if (td)
3016                 kb_base = td->o.kb_base;
3017         if (!kb_base)
3018                 kb_base = 1024;
3019
3020         return kb_base;
3021 }
3022
3023 int add_option(struct fio_option *o)
3024 {
3025         struct fio_option *__o;
3026         int opt_index = 0;
3027
3028         __o = options;
3029         while (__o->name) {
3030                 opt_index++;
3031                 __o++;
3032         }
3033
3034         memcpy(&options[opt_index], o, sizeof(*o));
3035         return 0;
3036 }
3037
3038 void invalidate_profile_options(const char *prof_name)
3039 {
3040         struct fio_option *o;
3041
3042         o = options;
3043         while (o->name) {
3044                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
3045                         o->type = FIO_OPT_INVALID;
3046                         o->prof_name = NULL;
3047                 }
3048                 o++;
3049         }
3050 }
3051
3052 void add_opt_posval(const char *optname, const char *ival, const char *help)
3053 {
3054         struct fio_option *o;
3055         unsigned int i;
3056
3057         o = find_option(options, optname);
3058         if (!o)
3059                 return;
3060
3061         for (i = 0; i < PARSE_MAX_VP; i++) {
3062                 if (o->posval[i].ival)
3063                         continue;
3064
3065                 o->posval[i].ival = ival;
3066                 o->posval[i].help = help;
3067                 break;
3068         }
3069 }
3070
3071 void del_opt_posval(const char *optname, const char *ival)
3072 {
3073         struct fio_option *o;
3074         unsigned int i;
3075
3076         o = find_option(options, optname);
3077         if (!o)
3078                 return;
3079
3080         for (i = 0; i < PARSE_MAX_VP; i++) {
3081                 if (!o->posval[i].ival)
3082                         continue;
3083                 if (strcmp(o->posval[i].ival, ival))
3084                         continue;
3085
3086                 o->posval[i].ival = NULL;
3087                 o->posval[i].help = NULL;
3088         }
3089 }
3090
3091 void fio_options_free(struct thread_data *td)
3092 {
3093         options_free(options, td);
3094         if (td->eo && td->io_ops && td->io_ops->options) {
3095                 options_free(td->io_ops->options, td->eo);
3096                 free(td->eo);
3097                 td->eo = NULL;
3098         }
3099 }