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