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