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         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 752                 td->o.zipf_theta = val;
 753         else
 754                 td->o.pareto_h = val;
 755
 756         free(nr);
 757         return 0;
 758 }
 759
 760 static int check_dir(struct thread_data *td, char *fname)
 761 {
 762 #if 0
 763         char file[PATH_MAX], *dir;
 764         int elen = 0;
 765
 766         if (td->o.directory) {
 767                 strcpy(file, td->o.directory);
 768                 strcat(file, "/");
 769                 elen = strlen(file);
 770         }
 771
 772         sprintf(file + elen, "%s", fname);
 773         dir = dirname(file);
 774
 775         {
 776         struct stat sb;
 777         /*
 778          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 779          * yet, so we can't do this check right here...
 780          */
 781         if (lstat(dir, &sb) < 0) {
 782                 int ret = errno;
 783
 784                 log_err("fio: %s is not a directory\n", dir);
 785                 td_verror(td, ret, "lstat");
 786                 return 1;
 787         }
 788
 789         if (!S_ISDIR(sb.st_mode)) {
 790                 log_err("fio: %s is not a directory\n", dir);
 791                 return 1;
 792         }
 793         }
 794 #endif
 795
 796         return 0;
 797 }
 798
 799 /*
 800  * Return next file in the string. Files are separated with ':'. If the ':'
 801  * is escaped with a '\', then that ':' is part of the filename and does not
 802  * indicate a new file.
 803  */
 804 static char *get_next_file_name(char **ptr)
 805 {
 806         char *str = *ptr;
 807         char *p, *start;
 808
 809         if (!str || !strlen(str))
 810                 return NULL;
 811
 812         start = str;
 813         do {
 814                 /*
 815                  * No colon, we are done
 816                  */
 817                 p = strchr(str, ':');
 818                 if (!p) {
 819                         *ptr = NULL;
 820                         break;
 821                 }
 822
 823                 /*
 824                  * We got a colon, but it's the first character. Skip and
 825                  * continue
 826                  */
 827                 if (p == start) {
 828                         str = ++start;
 829                         continue;
 830                 }
 831
 832                 if (*(p - 1) != '\\') {
 833                         *p = '\0';
 834                         *ptr = p + 1;
 835                         break;
 836                 }
 837
 838                 memmove(p - 1, p, strlen(p) + 1);
 839                 str = p;
 840         } while (1);
 841
 842         return start;
 843 }
 844
 845 static int str_filename_cb(void *data, const char *input)
 846 {
 847         struct thread_data *td = data;
 848         char *fname, *str, *p;
 849
 850         p = str = strdup(input);
 851
 852         strip_blank_front(&str);
 853         strip_blank_end(str);
 854
 855         if (!td->files_index)
 856                 td->o.nr_files = 0;
 857
 858         while ((fname = get_next_file_name(&str)) != NULL) {
 859                 if (!strlen(fname))
 860                         break;
 861                 if (check_dir(td, fname)) {
 862                         free(p);
 863                         return 1;
 864                 }
 865                 add_file(td, fname);
 866                 td->o.nr_files++;
 867         }
 868
 869         free(p);
 870         return 0;
 871 }
 872
 873 static int str_directory_cb(void *data, const char fio_unused *str)
 874 {
 875         struct thread_data *td = data;
 876         struct stat sb;
 877
 878         if (lstat(td->o.directory, &sb) < 0) {
 879                 int ret = errno;
 880
 881                 log_err("fio: %s is not a directory\n", td->o.directory);
 882                 td_verror(td, ret, "lstat");
 883                 return 1;
 884         }
 885         if (!S_ISDIR(sb.st_mode)) {
 886                 log_err("fio: %s is not a directory\n", td->o.directory);
 887                 return 1;
 888         }
 889
 890         return 0;
 891 }
 892
 893 static int str_opendir_cb(void *data, const char fio_unused *str)
 894 {
 895         struct thread_data *td = data;
 896
 897         if (!td->files_index)
 898                 td->o.nr_files = 0;
 899
 900         return add_dir_files(td, td->o.opendir);
 901 }
 902
 903 static int str_verify_offset_cb(void *data, unsigned long long *off)
 904 {
 905         struct thread_data *td = data;
 906
 907         if (*off && *off < sizeof(struct verify_header)) {
 908                 log_err("fio: verify_offset too small\n");
 909                 return 1;
 910         }
 911
 912         td->o.verify_offset = *off;
 913         return 0;
 914 }
 915
 916 static int str_verify_pattern_cb(void *data, const char *input)
 917 {
 918         struct thread_data *td = data;
 919         long off;
 920         int i = 0, j = 0, len, k, base = 10;
 921         char* loc1, * loc2;
 922
 923         loc1 = strstr(input, "0x");
 924         loc2 = strstr(input, "0X");
 925         if (loc1 || loc2)
 926                 base = 16;
 927         off = strtol(input, NULL, base);
 928         if (off != LONG_MAX || errno != ERANGE) {
 929                 while (off) {
 930                         td->o.verify_pattern[i] = off & 0xff;
 931                         off >>= 8;
 932                         i++;
 933                 }
 934         } else {
 935                 len = strlen(input);
 936                 k = len - 1;
 937                 if (base == 16) {
 938                         if (loc1)
 939                                 j = loc1 - input + 2;
 940                         else
 941                                 j = loc2 - input + 2;
 942                 } else
 943                         return 1;
 944                 if (len - j < MAX_PATTERN_SIZE * 2) {
 945                         while (k >= j) {
 946                                 off = converthexchartoint(input[k--]);
 947                                 if (k >= j)
 948                                         off += (converthexchartoint(input[k--])
 949                                                 * 16);
 950                                 td->o.verify_pattern[i++] = (char) off;
 951                         }
 952                 }
 953         }
 954
 955         /*
 956          * Fill the pattern all the way to the end. This greatly reduces
 957          * the number of memcpy's we have to do when verifying the IO.
 958          */
 959         while (i > 1 && i * 2 <= MAX_PATTERN_SIZE) {
 960                 memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
 961                 i *= 2;
 962         }
 963         if (i == 1) {
 964                 /*
 965                  * The code in verify_io_u_pattern assumes a single byte pattern
 966                  * fills the whole verify pattern buffer.
 967                  */
 968                 memset(td->o.verify_pattern, td->o.verify_pattern[0],
 969                        MAX_PATTERN_SIZE);
 970         }
 971
 972         td->o.verify_pattern_bytes = i;
 973
 974         /*
 975          * VERIFY_META could already be set
 976          */
 977         if (td->o.verify == VERIFY_NONE)
 978                 td->o.verify = VERIFY_PATTERN;
 979
 980         return 0;
 981 }
 982
 983 static int str_lockfile_cb(void *data, const char *str)
 984 {
 985         struct thread_data *td = data;
 986         char *nr = get_opt_postfix(str);
 987
 988         td->o.lockfile_batch = 1;
 989         if (nr) {
 990                 td->o.lockfile_batch = atoi(nr);
 991                 free(nr);
 992         }
 993
 994         return 0;
 995 }
 996
 997 static int str_write_bw_log_cb(void *data, const char *str)
 998 {
 999         struct thread_data *td = data;
1000
1001         if (str)
1002                 td->o.bw_log_file = strdup(str);
1003
1004         td->o.write_bw_log = 1;
1005         return 0;
1006 }
1007
1008 static int str_write_lat_log_cb(void *data, const char *str)
1009 {
1010         struct thread_data *td = data;
1011
1012         if (str)
1013                 td->o.lat_log_file = strdup(str);
1014
1015         td->o.write_lat_log = 1;
1016         return 0;
1017 }
1018
1019 static int str_write_iops_log_cb(void *data, const char *str)
1020 {
1021         struct thread_data *td = data;
1022
1023         if (str)
1024                 td->o.iops_log_file = strdup(str);
1025
1026         td->o.write_iops_log = 1;
1027         return 0;
1028 }
1029
1030 static int str_gtod_reduce_cb(void *data, int *il)
1031 {
1032         struct thread_data *td = data;
1033         int val = *il;
1034
1035         td->o.disable_lat = !!val;
1036         td->o.disable_clat = !!val;
1037         td->o.disable_slat = !!val;
1038         td->o.disable_bw = !!val;
1039         td->o.clat_percentiles = !val;
1040         if (val)
1041                 td->tv_cache_mask = 63;
1042
1043         return 0;
1044 }
1045
1046 static int str_gtod_cpu_cb(void *data, long long *il)
1047 {
1048         struct thread_data *td = data;
1049         int val = *il;
1050
1051         td->o.gtod_cpu = val;
1052         td->o.gtod_offload = 1;
1053         return 0;
1054 }
1055
1056 static int str_size_cb(void *data, unsigned long long *__val)
1057 {
1058         struct thread_data *td = data;
1059         unsigned long long v = *__val;
1060
1061         if (parse_is_percent(v)) {
1062                 td->o.size = 0;
1063                 td->o.size_percent = -1ULL - v;
1064         } else
1065                 td->o.size = v;
1066
1067         return 0;
1068 }
1069
1070 static int rw_verify(struct fio_option *o, void *data)
1071 {
1072         struct thread_data *td = data;
1073
1074         if (read_only && td_write(td)) {
1075                 log_err("fio: job <%s> has write bit set, but fio is in"
1076                         " read-only mode\n", td->o.name);
1077                 return 1;
1078         }
1079
1080         return 0;
1081 }
1082
1083 static int gtod_cpu_verify(struct fio_option *o, void *data)
1084 {
1085 #ifndef FIO_HAVE_CPU_AFFINITY
1086         struct thread_data *td = data;
1087
1088         if (td->o.gtod_cpu) {
1089                 log_err("fio: platform must support CPU affinity for"
1090                         "gettimeofday() offloading\n");
1091                 return 1;
1092         }
1093 #endif
1094
1095         return 0;
1096 }
1097
1098 static int kb_base_verify(struct fio_option *o, void *data)
1099 {
1100         struct thread_data *td = data;
1101
1102         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
1103                 log_err("fio: kb_base set to nonsensical value: %u\n",
1104                                 td->o.kb_base);
1105                 return 1;
1106         }
1107
1108         return 0;
1109 }
1110
1111 /*
1112  * Map of job/command line options
1113  */
1114 static struct fio_option options[FIO_MAX_OPTS] = {
1115         {
1116                 .name   = "description",
1117                 .type   = FIO_OPT_STR_STORE,
1118                 .off1   = td_var_offset(description),
1119                 .help   = "Text job description",
1120         },
1121         {
1122                 .name   = "name",
1123                 .type   = FIO_OPT_STR_STORE,
1124                 .off1   = td_var_offset(name),
1125                 .help   = "Name of this job",
1126         },
1127         {
1128                 .name   = "directory",
1129                 .type   = FIO_OPT_STR_STORE,
1130                 .off1   = td_var_offset(directory),
1131                 .cb     = str_directory_cb,
1132                 .help   = "Directory to store files in",
1133         },
1134         {
1135                 .name   = "filename",
1136                 .type   = FIO_OPT_STR_STORE,
1137                 .off1   = td_var_offset(filename),
1138                 .cb     = str_filename_cb,
1139                 .prio   = -1, /* must come after "directory" */
1140                 .help   = "File(s) to use for the workload",
1141         },
1142         {
1143                 .name   = "kb_base",
1144                 .type   = FIO_OPT_INT,
1145                 .off1   = td_var_offset(kb_base),
1146                 .verify = kb_base_verify,
1147                 .prio   = 1,
1148                 .def    = "1024",
1149                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
1150         },
1151         {
1152                 .name   = "lockfile",
1153                 .type   = FIO_OPT_STR,
1154                 .cb     = str_lockfile_cb,
1155                 .off1   = td_var_offset(file_lock_mode),
1156                 .help   = "Lock file when doing IO to it",
1157                 .parent = "filename",
1158                 .def    = "none",
1159                 .posval = {
1160                           { .ival = "none",
1161                             .oval = FILE_LOCK_NONE,
1162                             .help = "No file locking",
1163                           },
1164                           { .ival = "exclusive",
1165                             .oval = FILE_LOCK_EXCLUSIVE,
1166                             .help = "Exclusive file lock",
1167                           },
1168                           {
1169                             .ival = "readwrite",
1170                             .oval = FILE_LOCK_READWRITE,
1171                             .help = "Read vs write lock",
1172                           },
1173                 },
1174         },
1175         {
1176                 .name   = "opendir",
1177                 .type   = FIO_OPT_STR_STORE,
1178                 .off1   = td_var_offset(opendir),
1179                 .cb     = str_opendir_cb,
1180                 .help   = "Recursively add files from this directory and down",
1181         },
1182         {
1183                 .name   = "rw",
1184                 .alias  = "readwrite",
1185                 .type   = FIO_OPT_STR,
1186                 .cb     = str_rw_cb,
1187                 .off1   = td_var_offset(td_ddir),
1188                 .help   = "IO direction",
1189                 .def    = "read",
1190                 .verify = rw_verify,
1191                 .posval = {
1192                           { .ival = "read",
1193                             .oval = TD_DDIR_READ,
1194                             .help = "Sequential read",
1195                           },
1196                           { .ival = "write",
1197                             .oval = TD_DDIR_WRITE,
1198                             .help = "Sequential write",
1199                           },
1200                           { .ival = "trim",
1201                             .oval = TD_DDIR_TRIM,
1202                             .help = "Sequential trim",
1203                           },
1204                           { .ival = "randread",
1205                             .oval = TD_DDIR_RANDREAD,
1206                             .help = "Random read",
1207                           },
1208                           { .ival = "randwrite",
1209                             .oval = TD_DDIR_RANDWRITE,
1210                             .help = "Random write",
1211                           },
1212                           { .ival = "randtrim",
1213                             .oval = TD_DDIR_RANDTRIM,
1214                             .help = "Random trim",
1215                           },
1216                           { .ival = "rw",
1217                             .oval = TD_DDIR_RW,
1218                             .help = "Sequential read and write mix",
1219                           },
1220                           { .ival = "readwrite",
1221                             .oval = TD_DDIR_RW,
1222                             .help = "Sequential read and write mix",
1223                           },
1224                           { .ival = "randrw",
1225                             .oval = TD_DDIR_RANDRW,
1226                             .help = "Random read and write mix"
1227                           },
1228                 },
1229         },
1230         {
1231                 .name   = "rw_sequencer",
1232                 .type   = FIO_OPT_STR,
1233                 .off1   = td_var_offset(rw_seq),
1234                 .help   = "IO offset generator modifier",
1235                 .def    = "sequential",
1236                 .posval = {
1237                           { .ival = "sequential",
1238                             .oval = RW_SEQ_SEQ,
1239                             .help = "Generate sequential offsets",
1240                           },
1241                           { .ival = "identical",
1242                             .oval = RW_SEQ_IDENT,
1243                             .help = "Generate identical offsets",
1244                           },
1245                 },
1246         },
1247
1248         {
1249                 .name   = "ioengine",
1250                 .type   = FIO_OPT_STR_STORE,
1251                 .off1   = td_var_offset(ioengine),
1252                 .help   = "IO engine to use",
1253                 .def    = FIO_PREFERRED_ENGINE,
1254                 .posval = {
1255                           { .ival = "sync",
1256                             .help = "Use read/write",
1257                           },
1258                           { .ival = "psync",
1259                             .help = "Use pread/pwrite",
1260                           },
1261                           { .ival = "vsync",
1262                             .help = "Use readv/writev",
1263                           },
1264 #ifdef FIO_HAVE_LIBAIO
1265                           { .ival = "libaio",
1266                             .help = "Linux native asynchronous IO",
1267                           },
1268 #endif
1269 #ifdef FIO_HAVE_POSIXAIO
1270                           { .ival = "posixaio",
1271                             .help = "POSIX asynchronous IO",
1272                           },
1273 #endif
1274 #ifdef FIO_HAVE_SOLARISAIO
1275                           { .ival = "solarisaio",
1276                             .help = "Solaris native asynchronous IO",
1277                           },
1278 #endif
1279 #ifdef FIO_HAVE_WINDOWSAIO
1280                           { .ival = "windowsaio",
1281                             .help = "Windows native asynchronous IO"
1282                           },
1283 #endif
1284                           { .ival = "mmap",
1285                             .help = "Memory mapped IO"
1286                           },
1287 #ifdef FIO_HAVE_SPLICE
1288                           { .ival = "splice",
1289                             .help = "splice/vmsplice based IO",
1290                           },
1291                           { .ival = "netsplice",
1292                             .help = "splice/vmsplice to/from the network",
1293                           },
1294 #endif
1295 #ifdef FIO_HAVE_SGIO
1296                           { .ival = "sg",
1297                             .help = "SCSI generic v3 IO",
1298                           },
1299 #endif
1300                           { .ival = "null",
1301                             .help = "Testing engine (no data transfer)",
1302                           },
1303                           { .ival = "net",
1304                             .help = "Network IO",
1305                           },
1306 #ifdef FIO_HAVE_SYSLET
1307                           { .ival = "syslet-rw",
1308                             .help = "syslet enabled async pread/pwrite IO",
1309                           },
1310 #endif
1311                           { .ival = "cpuio",
1312                             .help = "CPU cycle burner engine",
1313                           },
1314 #ifdef FIO_HAVE_GUASI
1315                           { .ival = "guasi",
1316                             .help = "GUASI IO engine",
1317                           },
1318 #endif
1319 #ifdef FIO_HAVE_BINJECT
1320                           { .ival = "binject",
1321                             .help = "binject direct inject block engine",
1322                           },
1323 #endif
1324 #ifdef FIO_HAVE_RDMA
1325                           { .ival = "rdma",
1326                             .help = "RDMA IO engine",
1327                           },
1328 #endif
1329 #ifdef FIO_HAVE_FUSION_AW
1330                           { .ival = "fusion-aw-sync",
1331                             .help = "Fusion-io atomic write engine",
1332                           },
1333 #endif
1334 #ifdef FIO_HAVE_E4_ENG
1335                           { .ival = "e4defrag",
1336                             .help = "ext4 defrag engine",
1337                           },
1338 #endif
1339 #ifdef FIO_HAVE_FALLOC_ENG
1340                           { .ival = "falloc",
1341                             .help = "fallocate() file based engine",
1342                           },
1343 #endif
1344                           { .ival = "external",
1345                             .help = "Load external engine (append name)",
1346                           },
1347                 },
1348         },
1349         {
1350                 .name   = "iodepth",
1351                 .type   = FIO_OPT_INT,
1352                 .off1   = td_var_offset(iodepth),
1353                 .help   = "Number of IO buffers to keep in flight",
1354                 .minval = 1,
1355                 .def    = "1",
1356         },
1357         {
1358                 .name   = "iodepth_batch",
1359                 .alias  = "iodepth_batch_submit",
1360                 .type   = FIO_OPT_INT,
1361                 .off1   = td_var_offset(iodepth_batch),
1362                 .help   = "Number of IO buffers to submit in one go",
1363                 .parent = "iodepth",
1364                 .minval = 1,
1365                 .def    = "1",
1366         },
1367         {
1368                 .name   = "iodepth_batch_complete",
1369                 .type   = FIO_OPT_INT,
1370                 .off1   = td_var_offset(iodepth_batch_complete),
1371                 .help   = "Number of IO buffers to retrieve in one go",
1372                 .parent = "iodepth",
1373                 .minval = 0,
1374                 .def    = "1",
1375         },
1376         {
1377                 .name   = "iodepth_low",
1378                 .type   = FIO_OPT_INT,
1379                 .off1   = td_var_offset(iodepth_low),
1380                 .help   = "Low water mark for queuing depth",
1381                 .parent = "iodepth",
1382         },
1383         {
1384                 .name   = "size",
1385                 .type   = FIO_OPT_STR_VAL,
1386                 .cb     = str_size_cb,
1387                 .help   = "Total size of device or files",
1388         },
1389         {
1390                 .name   = "fill_device",
1391                 .alias  = "fill_fs",
1392                 .type   = FIO_OPT_BOOL,
1393                 .off1   = td_var_offset(fill_device),
1394                 .help   = "Write until an ENOSPC error occurs",
1395                 .def    = "0",
1396         },
1397         {
1398                 .name   = "filesize",
1399                 .type   = FIO_OPT_STR_VAL,
1400                 .off1   = td_var_offset(file_size_low),
1401                 .off2   = td_var_offset(file_size_high),
1402                 .minval = 1,
1403                 .help   = "Size of individual files",
1404         },
1405         {
1406                 .name   = "offset",
1407                 .alias  = "fileoffset",
1408                 .type   = FIO_OPT_STR_VAL,
1409                 .off1   = td_var_offset(start_offset),
1410                 .help   = "Start IO from this offset",
1411                 .def    = "0",
1412         },
1413         {
1414                 .name   = "offset_increment",
1415                 .type   = FIO_OPT_STR_VAL,
1416                 .off1   = td_var_offset(offset_increment),
1417                 .help   = "What is the increment from one offset to the next",
1418                 .parent = "offset",
1419                 .def    = "0",
1420         },
1421         {
1422                 .name   = "bs",
1423                 .alias  = "blocksize",
1424                 .type   = FIO_OPT_INT,
1425                 .off1   = td_var_offset(bs[DDIR_READ]),
1426                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1427                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1428                 .minval = 1,
1429                 .help   = "Block size unit",
1430                 .def    = "4k",
1431                 .parent = "rw",
1432         },
1433         {
1434                 .name   = "ba",
1435                 .alias  = "blockalign",
1436                 .type   = FIO_OPT_INT,
1437                 .off1   = td_var_offset(ba[DDIR_READ]),
1438                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1439                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1440                 .minval = 1,
1441                 .help   = "IO block offset alignment",
1442                 .parent = "rw",
1443         },
1444         {
1445                 .name   = "bsrange",
1446                 .alias  = "blocksize_range",
1447                 .type   = FIO_OPT_RANGE,
1448                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1449                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1450                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1451                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1452                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1453                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1454                 .minval = 1,
1455                 .help   = "Set block size range (in more detail than bs)",
1456                 .parent = "rw",
1457         },
1458         {
1459                 .name   = "bssplit",
1460                 .type   = FIO_OPT_STR,
1461                 .cb     = str_bssplit_cb,
1462                 .help   = "Set a specific mix of block sizes",
1463                 .parent = "rw",
1464         },
1465         {
1466                 .name   = "bs_unaligned",
1467                 .alias  = "blocksize_unaligned",
1468                 .type   = FIO_OPT_STR_SET,
1469                 .off1   = td_var_offset(bs_unaligned),
1470                 .help   = "Don't sector align IO buffer sizes",
1471                 .parent = "rw",
1472         },
1473         {
1474                 .name   = "randrepeat",
1475                 .type   = FIO_OPT_BOOL,
1476                 .off1   = td_var_offset(rand_repeatable),
1477                 .help   = "Use repeatable random IO pattern",
1478                 .def    = "1",
1479                 .parent = "rw",
1480         },
1481         {
1482                 .name   = "use_os_rand",
1483                 .type   = FIO_OPT_BOOL,
1484                 .off1   = td_var_offset(use_os_rand),
1485                 .help   = "Set to use OS random generator",
1486                 .def    = "0",
1487                 .parent = "rw",
1488         },
1489         {
1490                 .name   = "norandommap",
1491                 .type   = FIO_OPT_STR_SET,
1492                 .off1   = td_var_offset(norandommap),
1493                 .help   = "Accept potential duplicate random blocks",
1494                 .parent = "rw",
1495         },
1496         {
1497                 .name   = "softrandommap",
1498                 .type   = FIO_OPT_BOOL,
1499                 .off1   = td_var_offset(softrandommap),
1500                 .help   = "Set norandommap if randommap allocation fails",
1501                 .parent = "norandommap",
1502                 .def    = "0",
1503         },
1504         {
1505                 .name   = "random_distribution",
1506                 .type   = FIO_OPT_STR,
1507                 .off1   = td_var_offset(random_distribution),
1508                 .cb     = str_random_distribution_cb,
1509                 .help   = "Random offset distribution generator",
1510                 .def    = "random",
1511                 .posval = {
1512                           { .ival = "random",
1513                             .oval = FIO_RAND_DIST_RANDOM,
1514                             .help = "Completely random",
1515                           },
1516                           { .ival = "zipf",
1517                             .oval = FIO_RAND_DIST_ZIPF,
1518                             .help = "Zipf distribution",
1519                           },
1520                           { .ival = "pareto",
1521                             .oval = FIO_RAND_DIST_PARETO,
1522                             .help = "Pareto distribution",
1523                           },
1524                 },
1525         },
1526         {
1527                 .name   = "nrfiles",
1528                 .alias  = "nr_files",
1529                 .type   = FIO_OPT_INT,
1530                 .off1   = td_var_offset(nr_files),
1531                 .help   = "Split job workload between this number of files",
1532                 .def    = "1",
1533         },
1534         {
1535                 .name   = "openfiles",
1536                 .type   = FIO_OPT_INT,
1537                 .off1   = td_var_offset(open_files),
1538                 .help   = "Number of files to keep open at the same time",
1539         },
1540         {
1541                 .name   = "file_service_type",
1542                 .type   = FIO_OPT_STR,
1543                 .cb     = str_fst_cb,
1544                 .off1   = td_var_offset(file_service_type),
1545                 .help   = "How to select which file to service next",
1546                 .def    = "roundrobin",
1547                 .posval = {
1548                           { .ival = "random",
1549                             .oval = FIO_FSERVICE_RANDOM,
1550                             .help = "Choose a file at random",
1551                           },
1552                           { .ival = "roundrobin",
1553                             .oval = FIO_FSERVICE_RR,
1554                             .help = "Round robin select files",
1555                           },
1556                           { .ival = "sequential",
1557                             .oval = FIO_FSERVICE_SEQ,
1558                             .help = "Finish one file before moving to the next",
1559                           },
1560                 },
1561                 .parent = "nrfiles",
1562         },
1563 #ifdef FIO_HAVE_FALLOCATE
1564         {
1565                 .name   = "fallocate",
1566                 .type   = FIO_OPT_STR,
1567                 .off1   = td_var_offset(fallocate_mode),
1568                 .help   = "Whether pre-allocation is performed when laying out files",
1569                 .def    = "posix",
1570                 .posval = {
1571                           { .ival = "none",
1572                             .oval = FIO_FALLOCATE_NONE,
1573                             .help = "Do not pre-allocate space",
1574                           },
1575                           { .ival = "posix",
1576                             .oval = FIO_FALLOCATE_POSIX,
1577                             .help = "Use posix_fallocate()",
1578                           },
1579 #ifdef FIO_HAVE_LINUX_FALLOCATE
1580                           { .ival = "keep",
1581                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1582                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1583                           },
1584 #endif
1585                           /* Compatibility with former boolean values */
1586                           { .ival = "0",
1587                             .oval = FIO_FALLOCATE_NONE,
1588                             .help = "Alias for 'none'",
1589                           },
1590                           { .ival = "1",
1591                             .oval = FIO_FALLOCATE_POSIX,
1592                             .help = "Alias for 'posix'",
1593                           },
1594                 },
1595         },
1596 #endif  /* FIO_HAVE_FALLOCATE */
1597         {
1598                 .name   = "fadvise_hint",
1599                 .type   = FIO_OPT_BOOL,
1600                 .off1   = td_var_offset(fadvise_hint),
1601                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1602                 .def    = "1",
1603         },
1604         {
1605                 .name   = "fsync",
1606                 .type   = FIO_OPT_INT,
1607                 .off1   = td_var_offset(fsync_blocks),
1608                 .help   = "Issue fsync for writes every given number of blocks",
1609                 .def    = "0",
1610         },
1611         {
1612                 .name   = "fdatasync",
1613                 .type   = FIO_OPT_INT,
1614                 .off1   = td_var_offset(fdatasync_blocks),
1615                 .help   = "Issue fdatasync for writes every given number of blocks",
1616                 .def    = "0",
1617         },
1618         {
1619                 .name   = "write_barrier",
1620                 .type   = FIO_OPT_INT,
1621                 .off1   = td_var_offset(barrier_blocks),
1622                 .help   = "Make every Nth write a barrier write",
1623                 .def    = "0",
1624         },
1625 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1626         {
1627                 .name   = "sync_file_range",
1628                 .posval = {
1629                           { .ival = "wait_before",
1630                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1631                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1632                             .or   = 1,
1633                           },
1634                           { .ival = "write",
1635                             .oval = SYNC_FILE_RANGE_WRITE,
1636                             .help = "SYNC_FILE_RANGE_WRITE",
1637                             .or   = 1,
1638                           },
1639                           {
1640                             .ival = "wait_after",
1641                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1642                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1643                             .or   = 1,
1644                           },
1645                 },
1646                 .type   = FIO_OPT_STR_MULTI,
1647                 .cb     = str_sfr_cb,
1648                 .off1   = td_var_offset(sync_file_range),
1649                 .help   = "Use sync_file_range()",
1650         },
1651 #endif
1652         {
1653                 .name   = "direct",
1654                 .type   = FIO_OPT_BOOL,
1655                 .off1   = td_var_offset(odirect),
1656                 .help   = "Use O_DIRECT IO (negates buffered)",
1657                 .def    = "0",
1658         },
1659         {
1660                 .name   = "buffered",
1661                 .type   = FIO_OPT_BOOL,
1662                 .off1   = td_var_offset(odirect),
1663                 .neg    = 1,
1664                 .help   = "Use buffered IO (negates direct)",
1665                 .def    = "1",
1666         },
1667         {
1668                 .name   = "overwrite",
1669                 .type   = FIO_OPT_BOOL,
1670                 .off1   = td_var_offset(overwrite),
1671                 .help   = "When writing, set whether to overwrite current data",
1672                 .def    = "0",
1673         },
1674         {
1675                 .name   = "loops",
1676                 .type   = FIO_OPT_INT,
1677                 .off1   = td_var_offset(loops),
1678                 .help   = "Number of times to run the job",
1679                 .def    = "1",
1680         },
1681         {
1682                 .name   = "numjobs",
1683                 .type   = FIO_OPT_INT,
1684                 .off1   = td_var_offset(numjobs),
1685                 .help   = "Duplicate this job this many times",
1686                 .def    = "1",
1687         },
1688         {
1689                 .name   = "startdelay",
1690                 .type   = FIO_OPT_STR_VAL_TIME,
1691                 .off1   = td_var_offset(start_delay),
1692                 .help   = "Only start job when this period has passed",
1693                 .def    = "0",
1694         },
1695         {
1696                 .name   = "runtime",
1697                 .alias  = "timeout",
1698                 .type   = FIO_OPT_STR_VAL_TIME,
1699                 .off1   = td_var_offset(timeout),
1700                 .help   = "Stop workload when this amount of time has passed",
1701                 .def    = "0",
1702         },
1703         {
1704                 .name   = "time_based",
1705                 .type   = FIO_OPT_STR_SET,
1706                 .off1   = td_var_offset(time_based),
1707                 .help   = "Keep running until runtime/timeout is met",
1708         },
1709         {
1710                 .name   = "ramp_time",
1711                 .type   = FIO_OPT_STR_VAL_TIME,
1712                 .off1   = td_var_offset(ramp_time),
1713                 .help   = "Ramp up time before measuring performance",
1714         },
1715         {
1716                 .name   = "clocksource",
1717                 .type   = FIO_OPT_STR,
1718                 .cb     = fio_clock_source_cb,
1719                 .off1   = td_var_offset(clocksource),
1720                 .help   = "What type of timing source to use",
1721                 .posval = {
1722                           { .ival = "gettimeofday",
1723                             .oval = CS_GTOD,
1724                             .help = "Use gettimeofday(2) for timing",
1725                           },
1726                           { .ival = "clock_gettime",
1727                             .oval = CS_CGETTIME,
1728                             .help = "Use clock_gettime(2) for timing",
1729                           },
1730 #ifdef ARCH_HAVE_CPU_CLOCK
1731                           { .ival = "cpu",
1732                             .oval = CS_CPUCLOCK,
1733                             .help = "Use CPU private clock",
1734                           },
1735 #endif
1736                 },
1737         },
1738         {
1739                 .name   = "mem",
1740                 .alias  = "iomem",
1741                 .type   = FIO_OPT_STR,
1742                 .cb     = str_mem_cb,
1743                 .off1   = td_var_offset(mem_type),
1744                 .help   = "Backing type for IO buffers",
1745                 .def    = "malloc",
1746                 .posval = {
1747                           { .ival = "malloc",
1748                             .oval = MEM_MALLOC,
1749                             .help = "Use malloc(3) for IO buffers",
1750                           },
1751                           { .ival = "shm",
1752                             .oval = MEM_SHM,
1753                             .help = "Use shared memory segments for IO buffers",
1754                           },
1755 #ifdef FIO_HAVE_HUGETLB
1756                           { .ival = "shmhuge",
1757                             .oval = MEM_SHMHUGE,
1758                             .help = "Like shm, but use huge pages",
1759                           },
1760 #endif
1761                           { .ival = "mmap",
1762                             .oval = MEM_MMAP,
1763                             .help = "Use mmap(2) (file or anon) for IO buffers",
1764                           },
1765 #ifdef FIO_HAVE_HUGETLB
1766                           { .ival = "mmaphuge",
1767                             .oval = MEM_MMAPHUGE,
1768                             .help = "Like mmap, but use huge pages",
1769                           },
1770 #endif
1771                   },
1772         },
1773         {
1774                 .name   = "iomem_align",
1775                 .alias  = "mem_align",
1776                 .type   = FIO_OPT_INT,
1777                 .off1   = td_var_offset(mem_align),
1778                 .minval = 0,
1779                 .help   = "IO memory buffer offset alignment",
1780                 .def    = "0",
1781                 .parent = "iomem",
1782         },
1783         {
1784                 .name   = "verify",
1785                 .type   = FIO_OPT_STR,
1786                 .off1   = td_var_offset(verify),
1787                 .help   = "Verify data written",
1788                 .cb     = str_verify_cb,
1789                 .def    = "0",
1790                 .posval = {
1791                           { .ival = "0",
1792                             .oval = VERIFY_NONE,
1793                             .help = "Don't do IO verification",
1794                           },
1795                           { .ival = "md5",
1796                             .oval = VERIFY_MD5,
1797                             .help = "Use md5 checksums for verification",
1798                           },
1799                           { .ival = "crc64",
1800                             .oval = VERIFY_CRC64,
1801                             .help = "Use crc64 checksums for verification",
1802                           },
1803                           { .ival = "crc32",
1804                             .oval = VERIFY_CRC32,
1805                             .help = "Use crc32 checksums for verification",
1806                           },
1807                           { .ival = "crc32c-intel",
1808                             .oval = VERIFY_CRC32C,
1809                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1810                           },
1811                           { .ival = "crc32c",
1812                             .oval = VERIFY_CRC32C,
1813                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1814                           },
1815                           { .ival = "crc16",
1816                             .oval = VERIFY_CRC16,
1817                             .help = "Use crc16 checksums for verification",
1818                           },
1819                           { .ival = "crc7",
1820                             .oval = VERIFY_CRC7,
1821                             .help = "Use crc7 checksums for verification",
1822                           },
1823                           { .ival = "sha1",
1824                             .oval = VERIFY_SHA1,
1825                             .help = "Use sha1 checksums for verification",
1826                           },
1827                           { .ival = "sha256",
1828                             .oval = VERIFY_SHA256,
1829                             .help = "Use sha256 checksums for verification",
1830                           },
1831                           { .ival = "sha512",
1832                             .oval = VERIFY_SHA512,
1833                             .help = "Use sha512 checksums for verification",
1834                           },
1835                           { .ival = "meta",
1836                             .oval = VERIFY_META,
1837                             .help = "Use io information",
1838                           },
1839                           {
1840                             .ival = "null",
1841                             .oval = VERIFY_NULL,
1842                             .help = "Pretend to verify",
1843                           },
1844                 },
1845         },
1846         {
1847                 .name   = "do_verify",
1848                 .type   = FIO_OPT_BOOL,
1849                 .off1   = td_var_offset(do_verify),
1850                 .help   = "Run verification stage after write",
1851                 .def    = "1",
1852                 .parent = "verify",
1853         },
1854         {
1855                 .name   = "verifysort",
1856                 .type   = FIO_OPT_BOOL,
1857                 .off1   = td_var_offset(verifysort),
1858                 .help   = "Sort written verify blocks for read back",
1859                 .def    = "1",
1860                 .parent = "verify",
1861         },
1862         {
1863                 .name   = "verify_interval",
1864                 .type   = FIO_OPT_INT,
1865                 .off1   = td_var_offset(verify_interval),
1866                 .minval = 2 * sizeof(struct verify_header),
1867                 .help   = "Store verify buffer header every N bytes",
1868                 .parent = "verify",
1869         },
1870         {
1871                 .name   = "verify_offset",
1872                 .type   = FIO_OPT_INT,
1873                 .help   = "Offset verify header location by N bytes",
1874                 .def    = "0",
1875                 .cb     = str_verify_offset_cb,
1876                 .parent = "verify",
1877         },
1878         {
1879                 .name   = "verify_pattern",
1880                 .type   = FIO_OPT_STR,
1881                 .cb     = str_verify_pattern_cb,
1882                 .help   = "Fill pattern for IO buffers",
1883                 .parent = "verify",
1884         },
1885         {
1886                 .name   = "verify_fatal",
1887                 .type   = FIO_OPT_BOOL,
1888                 .off1   = td_var_offset(verify_fatal),
1889                 .def    = "0",
1890                 .help   = "Exit on a single verify failure, don't continue",
1891                 .parent = "verify",
1892         },
1893         {
1894                 .name   = "verify_dump",
1895                 .type   = FIO_OPT_BOOL,
1896                 .off1   = td_var_offset(verify_dump),
1897                 .def    = "0",
1898                 .help   = "Dump contents of good and bad blocks on failure",
1899                 .parent = "verify",
1900         },
1901         {
1902                 .name   = "verify_async",
1903                 .type   = FIO_OPT_INT,
1904                 .off1   = td_var_offset(verify_async),
1905                 .def    = "0",
1906                 .help   = "Number of async verifier threads to use",
1907                 .parent = "verify",
1908         },
1909         {
1910                 .name   = "verify_backlog",
1911                 .type   = FIO_OPT_STR_VAL,
1912                 .off1   = td_var_offset(verify_backlog),
1913                 .help   = "Verify after this number of blocks are written",
1914                 .parent = "verify",
1915         },
1916         {
1917                 .name   = "verify_backlog_batch",
1918                 .type   = FIO_OPT_INT,
1919                 .off1   = td_var_offset(verify_batch),
1920                 .help   = "Verify this number of IO blocks",
1921                 .parent = "verify",
1922         },
1923 #ifdef FIO_HAVE_CPU_AFFINITY
1924         {
1925                 .name   = "verify_async_cpus",
1926                 .type   = FIO_OPT_STR,
1927                 .cb     = str_verify_cpus_allowed_cb,
1928                 .help   = "Set CPUs allowed for async verify threads",
1929                 .parent = "verify_async",
1930         },
1931 #endif
1932 #ifdef FIO_HAVE_TRIM
1933         {
1934                 .name   = "trim_percentage",
1935                 .type   = FIO_OPT_INT,
1936                 .cb     = str_verify_trim_cb,
1937                 .maxval = 100,
1938                 .help   = "Number of verify blocks to discard/trim",
1939                 .parent = "verify",
1940                 .def    = "0",
1941         },
1942         {
1943                 .name   = "trim_verify_zero",
1944                 .type   = FIO_OPT_INT,
1945                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1946                 .off1   = td_var_offset(trim_zero),
1947                 .parent = "trim_percentage",
1948                 .def    = "1",
1949         },
1950         {
1951                 .name   = "trim_backlog",
1952                 .type   = FIO_OPT_STR_VAL,
1953                 .off1   = td_var_offset(trim_backlog),
1954                 .help   = "Trim after this number of blocks are written",
1955                 .parent = "trim_percentage",
1956         },
1957         {
1958                 .name   = "trim_backlog_batch",
1959                 .type   = FIO_OPT_INT,
1960                 .off1   = td_var_offset(trim_batch),
1961                 .help   = "Trim this number of IO blocks",
1962                 .parent = "trim_percentage",
1963         },
1964 #endif
1965         {
1966                 .name   = "write_iolog",
1967                 .type   = FIO_OPT_STR_STORE,
1968                 .off1   = td_var_offset(write_iolog_file),
1969                 .help   = "Store IO pattern to file",
1970         },
1971         {
1972                 .name   = "read_iolog",
1973                 .type   = FIO_OPT_STR_STORE,
1974                 .off1   = td_var_offset(read_iolog_file),
1975                 .help   = "Playback IO pattern from file",
1976         },
1977         {
1978                 .name   = "replay_no_stall",
1979                 .type   = FIO_OPT_INT,
1980                 .off1   = td_var_offset(no_stall),
1981                 .def    = "0",
1982                 .parent = "read_iolog",
1983                 .help   = "Playback IO pattern file as fast as possible without stalls",
1984         },
1985         {
1986                 .name   = "replay_redirect",
1987                 .type   = FIO_OPT_STR_STORE,
1988                 .off1   = td_var_offset(replay_redirect),
1989                 .parent = "read_iolog",
1990                 .help   = "Replay all I/O onto this device, regardless of trace device",
1991         },
1992         {
1993                 .name   = "exec_prerun",
1994                 .type   = FIO_OPT_STR_STORE,
1995                 .off1   = td_var_offset(exec_prerun),
1996                 .help   = "Execute this file prior to running job",
1997         },
1998         {
1999                 .name   = "exec_postrun",
2000                 .type   = FIO_OPT_STR_STORE,
2001                 .off1   = td_var_offset(exec_postrun),
2002                 .help   = "Execute this file after running job",
2003         },
2004 #ifdef FIO_HAVE_IOSCHED_SWITCH
2005         {
2006                 .name   = "ioscheduler",
2007                 .type   = FIO_OPT_STR_STORE,
2008                 .off1   = td_var_offset(ioscheduler),
2009                 .help   = "Use this IO scheduler on the backing device",
2010         },
2011 #endif
2012         {
2013                 .name   = "zonesize",
2014                 .type   = FIO_OPT_STR_VAL,
2015                 .off1   = td_var_offset(zone_size),
2016                 .help   = "Amount of data to read per zone",
2017                 .def    = "0",
2018         },
2019         {
2020                 .name   = "zonerange",
2021                 .type   = FIO_OPT_STR_VAL,
2022                 .off1   = td_var_offset(zone_range),
2023                 .help   = "Give size of an IO zone",
2024                 .def    = "0",
2025         },
2026         {
2027                 .name   = "zoneskip",
2028                 .type   = FIO_OPT_STR_VAL,
2029                 .off1   = td_var_offset(zone_skip),
2030                 .help   = "Space between IO zones",
2031                 .def    = "0",
2032         },
2033         {
2034                 .name   = "lockmem",
2035                 .type   = FIO_OPT_STR_VAL,
2036                 .cb     = str_lockmem_cb,
2037                 .help   = "Lock down this amount of memory",
2038                 .def    = "0",
2039         },
2040         {
2041                 .name   = "rwmixread",
2042                 .type   = FIO_OPT_INT,
2043                 .cb     = str_rwmix_read_cb,
2044                 .maxval = 100,
2045                 .help   = "Percentage of mixed workload that is reads",
2046                 .def    = "50",
2047         },
2048         {
2049                 .name   = "rwmixwrite",
2050                 .type   = FIO_OPT_INT,
2051                 .cb     = str_rwmix_write_cb,
2052                 .maxval = 100,
2053                 .help   = "Percentage of mixed workload that is writes",
2054                 .def    = "50",
2055         },
2056         {
2057                 .name   = "rwmixcycle",
2058                 .type   = FIO_OPT_DEPRECATED,
2059         },
2060         {
2061                 .name   = "nice",
2062                 .type   = FIO_OPT_INT,
2063                 .off1   = td_var_offset(nice),
2064                 .help   = "Set job CPU nice value",
2065                 .minval = -19,
2066                 .maxval = 20,
2067                 .def    = "0",
2068         },
2069 #ifdef FIO_HAVE_IOPRIO
2070         {
2071                 .name   = "prio",
2072                 .type   = FIO_OPT_INT,
2073                 .cb     = str_prio_cb,
2074                 .help   = "Set job IO priority value",
2075                 .minval = 0,
2076                 .maxval = 7,
2077         },
2078         {
2079                 .name   = "prioclass",
2080                 .type   = FIO_OPT_INT,
2081                 .cb     = str_prioclass_cb,
2082                 .help   = "Set job IO priority class",
2083                 .minval = 0,
2084                 .maxval = 3,
2085         },
2086 #endif
2087         {
2088                 .name   = "thinktime",
2089                 .type   = FIO_OPT_INT,
2090                 .off1   = td_var_offset(thinktime),
2091                 .help   = "Idle time between IO buffers (usec)",
2092                 .def    = "0",
2093         },
2094         {
2095                 .name   = "thinktime_spin",
2096                 .type   = FIO_OPT_INT,
2097                 .off1   = td_var_offset(thinktime_spin),
2098                 .help   = "Start think time by spinning this amount (usec)",
2099                 .def    = "0",
2100                 .parent = "thinktime",
2101         },
2102         {
2103                 .name   = "thinktime_blocks",
2104                 .type   = FIO_OPT_INT,
2105                 .off1   = td_var_offset(thinktime_blocks),
2106                 .help   = "IO buffer period between 'thinktime'",
2107                 .def    = "1",
2108                 .parent = "thinktime",
2109         },
2110         {
2111                 .name   = "rate",
2112                 .type   = FIO_OPT_INT,
2113                 .off1   = td_var_offset(rate[DDIR_READ]),
2114                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2115                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2116                 .help   = "Set bandwidth rate",
2117         },
2118         {
2119                 .name   = "ratemin",
2120                 .type   = FIO_OPT_INT,
2121                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2122                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2123                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2124                 .help   = "Job must meet this rate or it will be shutdown",
2125                 .parent = "rate",
2126         },
2127         {
2128                 .name   = "rate_iops",
2129                 .type   = FIO_OPT_INT,
2130                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2131                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2132                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2133                 .help   = "Limit IO used to this number of IO operations/sec",
2134         },
2135         {
2136                 .name   = "rate_iops_min",
2137                 .type   = FIO_OPT_INT,
2138                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2139                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2140                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2141                 .help   = "Job must meet this rate or it will be shut down",
2142                 .parent = "rate_iops",
2143         },
2144         {
2145                 .name   = "ratecycle",
2146                 .type   = FIO_OPT_INT,
2147                 .off1   = td_var_offset(ratecycle),
2148                 .help   = "Window average for rate limits (msec)",
2149                 .def    = "1000",
2150                 .parent = "rate",
2151         },
2152         {
2153                 .name   = "max_latency",
2154                 .type   = FIO_OPT_INT,
2155                 .off1   = td_var_offset(max_latency),
2156                 .help   = "Maximum tolerated IO latency (usec)",
2157         },
2158         {
2159                 .name   = "invalidate",
2160                 .type   = FIO_OPT_BOOL,
2161                 .off1   = td_var_offset(invalidate_cache),
2162                 .help   = "Invalidate buffer/page cache prior to running job",
2163                 .def    = "1",
2164         },
2165         {
2166                 .name   = "sync",
2167                 .type   = FIO_OPT_BOOL,
2168                 .off1   = td_var_offset(sync_io),
2169                 .help   = "Use O_SYNC for buffered writes",
2170                 .def    = "0",
2171                 .parent = "buffered",
2172         },
2173         {
2174                 .name   = "bwavgtime",
2175                 .type   = FIO_OPT_INT,
2176                 .off1   = td_var_offset(bw_avg_time),
2177                 .help   = "Time window over which to calculate bandwidth"
2178                           " (msec)",
2179                 .def    = "500",
2180                 .parent = "write_bw_log",
2181         },
2182         {
2183                 .name   = "iopsavgtime",
2184                 .type   = FIO_OPT_INT,
2185                 .off1   = td_var_offset(iops_avg_time),
2186                 .help   = "Time window over which to calculate IOPS (msec)",
2187                 .def    = "500",
2188                 .parent = "write_iops_log",
2189         },
2190         {
2191                 .name   = "create_serialize",
2192                 .type   = FIO_OPT_BOOL,
2193                 .off1   = td_var_offset(create_serialize),
2194                 .help   = "Serialize creating of job files",
2195                 .def    = "1",
2196         },
2197         {
2198                 .name   = "create_fsync",
2199                 .type   = FIO_OPT_BOOL,
2200                 .off1   = td_var_offset(create_fsync),
2201                 .help   = "fsync file after creation",
2202                 .def    = "1",
2203         },
2204         {
2205                 .name   = "create_on_open",
2206                 .type   = FIO_OPT_BOOL,
2207                 .off1   = td_var_offset(create_on_open),
2208                 .help   = "Create files when they are opened for IO",
2209                 .def    = "0",
2210         },
2211         {
2212                 .name   = "create_only",
2213                 .type   = FIO_OPT_BOOL,
2214                 .off1   = td_var_offset(create_only),
2215                 .help   = "Only perform file creation phase",
2216                 .def    = "0",
2217         },
2218         {
2219                 .name   = "pre_read",
2220                 .type   = FIO_OPT_BOOL,
2221                 .off1   = td_var_offset(pre_read),
2222                 .help   = "Pre-read files before starting official testing",
2223                 .def    = "0",
2224         },
2225         {
2226                 .name   = "cpuload",
2227                 .type   = FIO_OPT_INT,
2228                 .off1   = td_var_offset(cpuload),
2229                 .help   = "Use this percentage of CPU",
2230         },
2231         {
2232                 .name   = "cpuchunks",
2233                 .type   = FIO_OPT_INT,
2234                 .off1   = td_var_offset(cpucycle),
2235                 .help   = "Length of the CPU burn cycles (usecs)",
2236                 .def    = "50000",
2237                 .parent = "cpuload",
2238         },
2239 #ifdef FIO_HAVE_CPU_AFFINITY
2240         {
2241                 .name   = "cpumask",
2242                 .type   = FIO_OPT_INT,
2243                 .cb     = str_cpumask_cb,
2244                 .help   = "CPU affinity mask",
2245         },
2246         {
2247                 .name   = "cpus_allowed",
2248                 .type   = FIO_OPT_STR,
2249                 .cb     = str_cpus_allowed_cb,
2250                 .help   = "Set CPUs allowed",
2251         },
2252 #endif
2253 #ifdef FIO_HAVE_LIBNUMA
2254         {
2255                 .name   = "numa_cpu_nodes",
2256                 .type   = FIO_OPT_STR,
2257                 .cb     = str_numa_cpunodes_cb,
2258                 .help   = "NUMA CPU nodes bind",
2259         },
2260         {
2261                 .name   = "numa_mem_policy",
2262                 .type   = FIO_OPT_STR,
2263                 .cb     = str_numa_mpol_cb,
2264                 .help   = "NUMA memory policy setup",
2265         },
2266 #endif
2267         {
2268                 .name   = "end_fsync",
2269                 .type   = FIO_OPT_BOOL,
2270                 .off1   = td_var_offset(end_fsync),
2271                 .help   = "Include fsync at the end of job",
2272                 .def    = "0",
2273         },
2274         {
2275                 .name   = "fsync_on_close",
2276                 .type   = FIO_OPT_BOOL,
2277                 .off1   = td_var_offset(fsync_on_close),
2278                 .help   = "fsync files on close",
2279                 .def    = "0",
2280         },
2281         {
2282                 .name   = "unlink",
2283                 .type   = FIO_OPT_BOOL,
2284                 .off1   = td_var_offset(unlink),
2285                 .help   = "Unlink created files after job has completed",
2286                 .def    = "0",
2287         },
2288         {
2289                 .name   = "exitall",
2290                 .type   = FIO_OPT_STR_SET,
2291                 .cb     = str_exitall_cb,
2292                 .help   = "Terminate all jobs when one exits",
2293         },
2294         {
2295                 .name   = "stonewall",
2296                 .alias  = "wait_for_previous",
2297                 .type   = FIO_OPT_STR_SET,
2298                 .off1   = td_var_offset(stonewall),
2299                 .help   = "Insert a hard barrier between this job and previous",
2300         },
2301         {
2302                 .name   = "new_group",
2303                 .type   = FIO_OPT_STR_SET,
2304                 .off1   = td_var_offset(new_group),
2305                 .help   = "Mark the start of a new group (for reporting)",
2306         },
2307         {
2308                 .name   = "thread",
2309                 .type   = FIO_OPT_STR_SET,
2310                 .off1   = td_var_offset(use_thread),
2311                 .help   = "Use threads instead of forks",
2312         },
2313         {
2314                 .name   = "write_bw_log",
2315                 .type   = FIO_OPT_STR,
2316                 .off1   = td_var_offset(write_bw_log),
2317                 .cb     = str_write_bw_log_cb,
2318                 .help   = "Write log of bandwidth during run",
2319         },
2320         {
2321                 .name   = "write_lat_log",
2322                 .type   = FIO_OPT_STR,
2323                 .off1   = td_var_offset(write_lat_log),
2324                 .cb     = str_write_lat_log_cb,
2325                 .help   = "Write log of latency during run",
2326         },
2327         {
2328                 .name   = "write_iops_log",
2329                 .type   = FIO_OPT_STR,
2330                 .off1   = td_var_offset(write_iops_log),
2331                 .cb     = str_write_iops_log_cb,
2332                 .help   = "Write log of IOPS during run",
2333         },
2334         {
2335                 .name   = "log_avg_msec",
2336                 .type   = FIO_OPT_INT,
2337                 .off1   = td_var_offset(log_avg_msec),
2338                 .help   = "Average bw/iops/lat logs over this period of time",
2339                 .def    = "0",
2340         },
2341         {
2342                 .name   = "hugepage-size",
2343                 .type   = FIO_OPT_INT,
2344                 .off1   = td_var_offset(hugepage_size),
2345                 .help   = "When using hugepages, specify size of each page",
2346                 .def    = __fio_stringify(FIO_HUGE_PAGE),
2347         },
2348         {
2349                 .name   = "group_reporting",
2350                 .type   = FIO_OPT_STR_SET,
2351                 .off1   = td_var_offset(group_reporting),
2352                 .help   = "Do reporting on a per-group basis",
2353         },
2354         {
2355                 .name   = "zero_buffers",
2356                 .type   = FIO_OPT_STR_SET,
2357                 .off1   = td_var_offset(zero_buffers),
2358                 .help   = "Init IO buffers to all zeroes",
2359         },
2360         {
2361                 .name   = "refill_buffers",
2362                 .type   = FIO_OPT_STR_SET,
2363                 .off1   = td_var_offset(refill_buffers),
2364                 .help   = "Refill IO buffers on every IO submit",
2365         },
2366         {
2367                 .name   = "scramble_buffers",
2368                 .type   = FIO_OPT_BOOL,
2369                 .off1   = td_var_offset(scramble_buffers),
2370                 .help   = "Slightly scramble buffers on every IO submit",
2371                 .def    = "1",
2372         },
2373         {
2374                 .name   = "buffer_compress_percentage",
2375                 .type   = FIO_OPT_INT,
2376                 .off1   = td_var_offset(compress_percentage),
2377                 .maxval = 100,
2378                 .minval = 1,
2379                 .help   = "How compressible the buffer is (approximately)",
2380         },
2381         {
2382                 .name   = "buffer_compress_chunk",
2383                 .type   = FIO_OPT_INT,
2384                 .off1   = td_var_offset(compress_chunk),
2385                 .parent = "buffer_compress_percentage",
2386                 .help   = "Size of compressible region in buffer",
2387         },
2388         {
2389                 .name   = "clat_percentiles",
2390                 .type   = FIO_OPT_BOOL,
2391                 .off1   = td_var_offset(clat_percentiles),
2392                 .help   = "Enable the reporting of completion latency percentiles",
2393                 .def    = "1",
2394         },
2395         {
2396                 .name   = "percentile_list",
2397                 .type   = FIO_OPT_FLOAT_LIST,
2398                 .off1   = td_var_offset(percentile_list),
2399                 .off2   = td_var_offset(overwrite_plist),
2400                 .help   = "Specify a custom list of percentiles to report",
2401                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2402                 .minfp  = 0.0,
2403                 .maxfp  = 100.0,
2404         },
2405
2406 #ifdef FIO_HAVE_DISK_UTIL
2407         {
2408                 .name   = "disk_util",
2409                 .type   = FIO_OPT_BOOL,
2410                 .off1   = td_var_offset(do_disk_util),
2411                 .help   = "Log disk utilization statistics",
2412                 .def    = "1",
2413         },
2414 #endif
2415         {
2416                 .name   = "gtod_reduce",
2417                 .type   = FIO_OPT_BOOL,
2418                 .help   = "Greatly reduce number of gettimeofday() calls",
2419                 .cb     = str_gtod_reduce_cb,
2420                 .def    = "0",
2421         },
2422         {
2423                 .name   = "disable_lat",
2424                 .type   = FIO_OPT_BOOL,
2425                 .off1   = td_var_offset(disable_lat),
2426                 .help   = "Disable latency numbers",
2427                 .parent = "gtod_reduce",
2428                 .def    = "0",
2429         },
2430         {
2431                 .name   = "disable_clat",
2432                 .type   = FIO_OPT_BOOL,
2433                 .off1   = td_var_offset(disable_clat),
2434                 .help   = "Disable completion latency numbers",
2435                 .parent = "gtod_reduce",
2436                 .def    = "0",
2437         },
2438         {
2439                 .name   = "disable_slat",
2440                 .type   = FIO_OPT_BOOL,
2441                 .off1   = td_var_offset(disable_slat),
2442                 .help   = "Disable submission latency numbers",
2443                 .parent = "gtod_reduce",
2444                 .def    = "0",
2445         },
2446         {
2447                 .name   = "disable_bw_measurement",
2448                 .type   = FIO_OPT_BOOL,
2449                 .off1   = td_var_offset(disable_bw),
2450                 .help   = "Disable bandwidth logging",
2451                 .parent = "gtod_reduce",
2452                 .def    = "0",
2453         },
2454         {
2455                 .name   = "gtod_cpu",
2456                 .type   = FIO_OPT_INT,
2457                 .cb     = str_gtod_cpu_cb,
2458                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2459                 .verify = gtod_cpu_verify,
2460         },
2461         {
2462                 .name   = "continue_on_error",
2463                 .type   = FIO_OPT_STR,
2464                 .off1   = td_var_offset(continue_on_error),
2465                 .help   = "Continue on non-fatal errors during IO",
2466                 .def    = "none",
2467                 .posval = {
2468                           { .ival = "none",
2469                             .oval = ERROR_TYPE_NONE,
2470                             .help = "Exit when an error is encountered",
2471                           },
2472                           { .ival = "read",
2473                             .oval = ERROR_TYPE_READ,
2474                             .help = "Continue on read errors only",
2475                           },
2476                           { .ival = "write",
2477                             .oval = ERROR_TYPE_WRITE,
2478                             .help = "Continue on write errors only",
2479                           },
2480                           { .ival = "io",
2481                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2482                             .help = "Continue on any IO errors",
2483                           },
2484                           { .ival = "verify",
2485                             .oval = ERROR_TYPE_VERIFY,
2486                             .help = "Continue on verify errors only",
2487                           },
2488                           { .ival = "all",
2489                             .oval = ERROR_TYPE_ANY,
2490                             .help = "Continue on all io and verify errors",
2491                           },
2492                           { .ival = "0",
2493                             .oval = ERROR_TYPE_NONE,
2494                             .help = "Alias for 'none'",
2495                           },
2496                           { .ival = "1",
2497                             .oval = ERROR_TYPE_ANY,
2498                             .help = "Alias for 'all'",
2499                           },
2500                 },
2501         },
2502         {
2503                 .name   = "ignore_error",
2504                 .type   = FIO_OPT_STR,
2505                 .cb     = str_ignore_error_cb,
2506                 .help   = "Set a specific list of errors to ignore",
2507                 .parent = "rw",
2508         },
2509         {
2510                 .name   = "error_dump",
2511                 .type   = FIO_OPT_BOOL,
2512                 .off1   = td_var_offset(error_dump),
2513                 .def    = "0",
2514                 .help   = "Dump info on each error",
2515         },
2516
2517         {
2518                 .name   = "profile",
2519                 .type   = FIO_OPT_STR_STORE,
2520                 .off1   = td_var_offset(profile),
2521                 .help   = "Select a specific builtin performance test",
2522         },
2523         {
2524                 .name   = "cgroup",
2525                 .type   = FIO_OPT_STR_STORE,
2526                 .off1   = td_var_offset(cgroup),
2527                 .help   = "Add job to cgroup of this name",
2528         },
2529         {
2530                 .name   = "cgroup_weight",
2531                 .type   = FIO_OPT_INT,
2532                 .off1   = td_var_offset(cgroup_weight),
2533                 .help   = "Use given weight for cgroup",
2534                 .minval = 100,
2535                 .maxval = 1000,
2536         },
2537         {
2538                 .name   = "cgroup_nodelete",
2539                 .type   = FIO_OPT_BOOL,
2540                 .off1   = td_var_offset(cgroup_nodelete),
2541                 .help   = "Do not delete cgroups after job completion",
2542                 .def    = "0",
2543         },
2544         {
2545                 .name   = "uid",
2546                 .type   = FIO_OPT_INT,
2547                 .off1   = td_var_offset(uid),
2548                 .help   = "Run job with this user ID",
2549         },
2550         {
2551                 .name   = "gid",
2552                 .type   = FIO_OPT_INT,
2553                 .off1   = td_var_offset(gid),
2554                 .help   = "Run job with this group ID",
2555         },
2556         {
2557                 .name   = "flow_id",
2558                 .type   = FIO_OPT_INT,
2559                 .off1   = td_var_offset(flow_id),
2560                 .help   = "The flow index ID to use",
2561                 .def    = "0",
2562         },
2563         {
2564                 .name   = "flow",
2565                 .type   = FIO_OPT_INT,
2566                 .off1   = td_var_offset(flow),
2567                 .help   = "Weight for flow control of this job",
2568                 .parent = "flow_id",
2569                 .def    = "0",
2570         },
2571         {
2572                 .name   = "flow_watermark",
2573                 .type   = FIO_OPT_INT,
2574                 .off1   = td_var_offset(flow_watermark),
2575                 .help   = "High watermark for flow control. This option"
2576                         " should be set to the same value for all threads"
2577                         " with non-zero flow.",
2578                 .parent = "flow_id",
2579                 .def    = "1024",
2580         },
2581         {
2582                 .name   = "flow_sleep",
2583                 .type   = FIO_OPT_INT,
2584                 .off1   = td_var_offset(flow_sleep),
2585                 .help   = "How many microseconds to sleep after being held"
2586                         " back by the flow control mechanism",
2587                 .parent = "flow_id",
2588                 .def    = "0",
2589         },
2590         {
2591                 .name = NULL,
2592         },
2593 };
2594
2595 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2596                         const char *name, int val)
2597 {
2598         lopt->name = (char *) name;
2599         lopt->val = val;
2600         if (o->type == FIO_OPT_STR_SET)
2601                 lopt->has_arg = no_argument;
2602         else
2603                 lopt->has_arg = required_argument;
2604 }
2605
2606 static void options_to_lopts(struct fio_option *opts,
2607                               struct option *long_options,
2608                               int i, int option_type)
2609 {
2610         struct fio_option *o = &opts[0];
2611         while (o->name) {
2612                 add_to_lopt(&long_options[i], o, o->name, option_type);
2613                 if (o->alias) {
2614                         i++;
2615                         add_to_lopt(&long_options[i], o, o->alias, option_type);
2616                 }
2617
2618                 i++;
2619                 o++;
2620                 assert(i < FIO_NR_OPTIONS);
2621         }
2622 }
2623
2624 void fio_options_set_ioengine_opts(struct option *long_options,
2625                                    struct thread_data *td)
2626 {
2627         unsigned int i;
2628
2629         i = 0;
2630         while (long_options[i].name) {
2631                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2632                         memset(&long_options[i], 0, sizeof(*long_options));
2633                         break;
2634                 }
2635                 i++;
2636         }
2637
2638         /*
2639          * Just clear out the prior ioengine options.
2640          */
2641         if (!td || !td->eo)
2642                 return;
2643
2644         options_to_lopts(td->io_ops->options, long_options, i,
2645                          FIO_GETOPT_IOENGINE);
2646 }
2647
2648 void fio_options_dup_and_init(struct option *long_options)
2649 {
2650         unsigned int i;
2651
2652         options_init(options);
2653
2654         i = 0;
2655         while (long_options[i].name)
2656                 i++;
2657
2658         options_to_lopts(options, long_options, i, FIO_GETOPT_JOB);
2659 }
2660
2661 struct fio_keyword {
2662         const char *word;
2663         const char *desc;
2664         char *replace;
2665 };
2666
2667 static struct fio_keyword fio_keywords[] = {
2668         {
2669                 .word   = "$pagesize",
2670                 .desc   = "Page size in the system",
2671         },
2672         {
2673                 .word   = "$mb_memory",
2674                 .desc   = "Megabytes of memory online",
2675         },
2676         {
2677                 .word   = "$ncpus",
2678                 .desc   = "Number of CPUs online in the system",
2679         },
2680         {
2681                 .word   = NULL,
2682         },
2683 };
2684
2685 void fio_keywords_init(void)
2686 {
2687         unsigned long long mb_memory;
2688         char buf[128];
2689         long l;
2690
2691         sprintf(buf, "%lu", (unsigned long) page_size);
2692         fio_keywords[0].replace = strdup(buf);
2693
2694         mb_memory = os_phys_mem() / (1024 * 1024);
2695         sprintf(buf, "%llu", mb_memory);
2696         fio_keywords[1].replace = strdup(buf);
2697
2698         l = cpus_online();
2699         sprintf(buf, "%lu", l);
2700         fio_keywords[2].replace = strdup(buf);
2701 }
2702
2703 #define BC_APP          "bc"
2704
2705 static char *bc_calc(char *str)
2706 {
2707         char buf[128], *tmp;
2708         FILE *f;
2709         int ret;
2710
2711         /*
2712          * No math, just return string
2713          */
2714         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2715              !strchr(str, '/')) || strchr(str, '\''))
2716                 return str;
2717
2718         /*
2719          * Split option from value, we only need to calculate the value
2720          */
2721         tmp = strchr(str, '=');
2722         if (!tmp)
2723                 return str;
2724
2725         tmp++;
2726
2727         /*
2728          * Prevent buffer overflows; such a case isn't reasonable anyway
2729          */
2730         if (strlen(str) >= 128 || strlen(tmp) > 100)
2731                 return str;
2732
2733         sprintf(buf, "which %s > /dev/null", BC_APP);
2734         if (system(buf)) {
2735                 log_err("fio: bc is needed for performing math\n");
2736                 return NULL;
2737         }
2738
2739         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2740         f = popen(buf, "r");
2741         if (!f) {
2742                 return NULL;
2743         }
2744
2745         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2746         if (ret <= 0) {
2747                 return NULL;
2748         }
2749
2750         pclose(f);
2751         buf[(tmp - str) + ret - 1] = '\0';
2752         memcpy(buf, str, tmp - str);
2753         free(str);
2754         return strdup(buf);
2755 }
2756
2757 /*
2758  * Return a copy of the input string with substrings of the form ${VARNAME}
2759  * substituted with the value of the environment variable VARNAME.  The
2760  * substitution always occurs, even if VARNAME is empty or the corresponding
2761  * environment variable undefined.
2762  */
2763 static char *option_dup_subs(const char *opt)
2764 {
2765         char out[OPT_LEN_MAX+1];
2766         char in[OPT_LEN_MAX+1];
2767         char *outptr = out;
2768         char *inptr = in;
2769         char *ch1, *ch2, *env;
2770         ssize_t nchr = OPT_LEN_MAX;
2771         size_t envlen;
2772
2773         if (strlen(opt) + 1 > OPT_LEN_MAX) {
2774                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2775                 return NULL;
2776         }
2777
2778         in[OPT_LEN_MAX] = '\0';
2779         strncpy(in, opt, OPT_LEN_MAX);
2780
2781         while (*inptr && nchr > 0) {
2782                 if (inptr[0] == '$' && inptr[1] == '{') {
2783                         ch2 = strchr(inptr, '}');
2784                         if (ch2 && inptr+1 < ch2) {
2785                                 ch1 = inptr+2;
2786                                 inptr = ch2+1;
2787                                 *ch2 = '\0';
2788
2789                                 env = getenv(ch1);
2790                                 if (env) {
2791                                         envlen = strlen(env);
2792                                         if (envlen <= nchr) {
2793                                                 memcpy(outptr, env, envlen);
2794                                                 outptr += envlen;
2795                                                 nchr -= envlen;
2796                                         }
2797                                 }
2798
2799                                 continue;
2800                         }
2801                 }
2802
2803                 *outptr++ = *inptr++;
2804                 --nchr;
2805         }
2806
2807         *outptr = '\0';
2808         return strdup(out);
2809 }
2810
2811 /*
2812  * Look for reserved variable names and replace them with real values
2813  */
2814 static char *fio_keyword_replace(char *opt)
2815 {
2816         char *s;
2817         int i;
2818         int docalc = 0;
2819
2820         for (i = 0; fio_keywords[i].word != NULL; i++) {
2821                 struct fio_keyword *kw = &fio_keywords[i];
2822
2823                 while ((s = strstr(opt, kw->word)) != NULL) {
2824                         char *new = malloc(strlen(opt) + 1);
2825                         char *o_org = opt;
2826                         int olen = s - opt;
2827                         int len;
2828
2829                         /*
2830                          * Copy part of the string before the keyword and
2831                          * sprintf() the replacement after it.
2832                          */
2833                         memcpy(new, opt, olen);
2834                         len = sprintf(new + olen, "%s", kw->replace);
2835
2836                         /*
2837                          * If there's more in the original string, copy that
2838                          * in too
2839                          */
2840                         opt += strlen(kw->word) + olen;
2841                         if (strlen(opt))
2842                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2843
2844                         /*
2845                          * replace opt and free the old opt
2846                          */
2847                         opt = new;
2848                         free(o_org);
2849
2850                         docalc = 1;
2851                 }
2852         }
2853
2854         /*
2855          * Check for potential math and invoke bc, if possible
2856          */
2857         if (docalc)
2858                 opt = bc_calc(opt);
2859
2860         return opt;
2861 }
2862
2863 static char **dup_and_sub_options(char **opts, int num_opts)
2864 {
2865         int i;
2866         char **opts_copy = malloc(num_opts * sizeof(*opts));
2867         for (i = 0; i < num_opts; i++) {
2868                 opts_copy[i] = option_dup_subs(opts[i]);
2869                 if (!opts_copy[i])
2870                         continue;
2871                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2872         }
2873         return opts_copy;
2874 }
2875
2876 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2877 {
2878         int i, ret, unknown;
2879         char **opts_copy;
2880
2881         sort_options(opts, options, num_opts);
2882         opts_copy = dup_and_sub_options(opts, num_opts);
2883
2884         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2885                 struct fio_option *o;
2886                 int newret = parse_option(opts_copy[i], opts[i], options, &o,
2887                                           td);
2888
2889                 if (opts_copy[i]) {
2890                         if (newret && !o) {
2891                                 unknown++;
2892                                 continue;
2893                         }
2894                         free(opts_copy[i]);
2895                         opts_copy[i] = NULL;
2896                 }
2897
2898                 ret |= newret;
2899         }
2900
2901         if (unknown) {
2902                 ret |= ioengine_load(td);
2903                 if (td->eo) {
2904                         sort_options(opts_copy, td->io_ops->options, num_opts);
2905                         opts = opts_copy;
2906                 }
2907                 for (i = 0; i < num_opts; i++) {
2908                         struct fio_option *o = NULL;
2909                         int newret = 1;
2910                         if (!opts_copy[i])
2911                                 continue;
2912
2913                         if (td->eo)
2914                                 newret = parse_option(opts_copy[i], opts[i],
2915                                                       td->io_ops->options, &o,
2916                                                       td->eo);
2917
2918                         ret |= newret;
2919                         if (!o)
2920                                 log_err("Bad option <%s>\n", opts[i]);
2921
2922                         free(opts_copy[i]);
2923                         opts_copy[i] = NULL;
2924                 }
2925         }
2926
2927         free(opts_copy);
2928         return ret;
2929 }
2930
2931 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2932 {
2933         return parse_cmd_option(opt, val, options, td);
2934 }
2935
2936 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
2937                                 char *val)
2938 {
2939         return parse_cmd_option(opt, val, td->io_ops->options, td);
2940 }
2941
2942 void fio_fill_default_options(struct thread_data *td)
2943 {
2944         fill_default_options(td, options);
2945 }
2946
2947 int fio_show_option_help(const char *opt)
2948 {
2949         return show_cmd_help(options, opt);
2950 }
2951
2952 void options_mem_dupe(void *data, struct fio_option *options)
2953 {
2954         struct fio_option *o;
2955         char **ptr;
2956
2957         for (o = &options[0]; o->name; o++) {
2958                 if (o->type != FIO_OPT_STR_STORE)
2959                         continue;
2960
2961                 ptr = td_var(data, o->off1);
2962                 if (*ptr)
2963                         *ptr = strdup(*ptr);
2964         }
2965 }
2966
2967 /*
2968  * dupe FIO_OPT_STR_STORE options
2969  */
2970 void fio_options_mem_dupe(struct thread_data *td)
2971 {
2972         options_mem_dupe(&td->o, options);
2973
2974         if (td->eo && td->io_ops) {
2975                 void *oldeo = td->eo;
2976
2977                 td->eo = malloc(td->io_ops->option_struct_size);
2978                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
2979                 options_mem_dupe(td->eo, td->io_ops->options);
2980         }
2981 }
2982
2983 unsigned int fio_get_kb_base(void *data)
2984 {
2985         struct thread_data *td = data;
2986         unsigned int kb_base = 0;
2987
2988         if (td)
2989                 kb_base = td->o.kb_base;
2990         if (!kb_base)
2991                 kb_base = 1024;
2992
2993         return kb_base;
2994 }
2995
2996 int add_option(struct fio_option *o)
2997 {
2998         struct fio_option *__o;
2999         int opt_index = 0;
3000
3001         __o = options;
3002         while (__o->name) {
3003                 opt_index++;
3004                 __o++;
3005         }
3006
3007         memcpy(&options[opt_index], o, sizeof(*o));
3008         return 0;
3009 }
3010
3011 void invalidate_profile_options(const char *prof_name)
3012 {
3013         struct fio_option *o;
3014
3015         o = options;
3016         while (o->name) {
3017                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
3018                         o->type = FIO_OPT_INVALID;
3019                         o->prof_name = NULL;
3020                 }
3021                 o++;
3022         }
3023 }
3024
3025 void add_opt_posval(const char *optname, const char *ival, const char *help)
3026 {
3027         struct fio_option *o;
3028         unsigned int i;
3029
3030         o = find_option(options, optname);
3031         if (!o)
3032                 return;
3033
3034         for (i = 0; i < PARSE_MAX_VP; i++) {
3035                 if (o->posval[i].ival)
3036                         continue;
3037
3038                 o->posval[i].ival = ival;
3039                 o->posval[i].help = help;
3040                 break;
3041         }
3042 }
3043
3044 void del_opt_posval(const char *optname, const char *ival)
3045 {
3046         struct fio_option *o;
3047         unsigned int i;
3048
3049         o = find_option(options, optname);
3050         if (!o)
3051                 return;
3052
3053         for (i = 0; i < PARSE_MAX_VP; i++) {
3054                 if (!o->posval[i].ival)
3055                         continue;
3056                 if (strcmp(o->posval[i].ival, ival))
3057                         continue;
3058
3059                 o->posval[i].ival = NULL;
3060                 o->posval[i].help = NULL;
3061         }
3062 }
3063
3064 void fio_options_free(struct thread_data *td)
3065 {
3066         options_free(options, td);
3067         if (td->eo && td->io_ops && td->io_ops->options) {
3068                 options_free(td->io_ops->options, td->eo);
3069                 free(td->eo);
3070                 td->eo = NULL;
3071         }
3072 }