options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163
 164 }
 165
 166 static int str_bssplit_cb(void *data, const char *input)
 167 {
 168         struct thread_data *td = data;
 169         char *str, *p, *odir;
 170         int ret = 0;
 171
 172         p = str = strdup(input);
 173
 174         strip_blank_front(&str);
 175         strip_blank_end(str);
 176
 177         odir = strchr(str, ',');
 178         if (odir) {
 179                 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 180                 if (!ret) {
 181                         *odir = '\0';
 182                         ret = bssplit_ddir(td, DDIR_READ, str);
 183                 }
 184         } else {
 185                 char *op;
 186
 187                 op = strdup(str);
 188
 189                 ret = bssplit_ddir(td, DDIR_READ, str);
 190                 if (!ret)
 191                         ret = bssplit_ddir(td, DDIR_WRITE, op);
 192
 193                 free(op);
 194         }
 195
 196         free(p);
 197         return ret;
 198 }
 199
 200 static int str_rw_cb(void *data, const char *str)
 201 {
 202         struct thread_data *td = data;
 203         char *nr = get_opt_postfix(str);
 204
 205         td->o.ddir_seq_nr = 1;
 206         td->o.ddir_seq_add = 0;
 207
 208         if (!nr)
 209                 return 0;
 210
 211         if (td_random(td))
 212                 td->o.ddir_seq_nr = atoi(nr);
 213         else {
 214                 long long val;
 215
 216                 if (str_to_decimal(nr, &val, 1, td)) {
 217                         log_err("fio: rw postfix parsing failed\n");
 218                         free(nr);
 219                         return 1;
 220                 }
 221
 222                 td->o.ddir_seq_add = val;
 223         }
 224
 225         free(nr);
 226         return 0;
 227 }
 228
 229 static int str_mem_cb(void *data, const char *mem)
 230 {
 231         struct thread_data *td = data;
 232
 233         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 234                 td->mmapfile = get_opt_postfix(mem);
 235                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 236                         log_err("fio: mmaphuge:/path/to/file\n");
 237                         return 1;
 238                 }
 239         }
 240
 241         return 0;
 242 }
 243
 244 static int str_verify_cb(void *data, const char *mem)
 245 {
 246         struct thread_data *td = data;
 247
 248         if (td->o.verify != VERIFY_CRC32C_INTEL)
 249                 return 0;
 250
 251         if (!crc32c_intel_works()) {
 252                 log_info("fio: System does not support hw accelerated crc32c. Falling back to sw crc32c.\n");
 253                 td->o.verify = VERIFY_CRC32C;
 254         }
 255
 256         return 0;
 257 }
 258
 259 static int fio_clock_source_cb(void *data, const char *str)
 260 {
 261         struct thread_data *td = data;
 262
 263         fio_clock_source = td->o.clocksource;
 264         fio_time_init();
 265         return 0;
 266 }
 267
 268 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 269 {
 270         mlock_size = *val;
 271         return 0;
 272 }
 273
 274 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 275 {
 276         struct thread_data *td = data;
 277
 278         td->o.rwmix[DDIR_READ] = *val;
 279         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 280         return 0;
 281 }
 282
 283 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 284 {
 285         struct thread_data *td = data;
 286
 287         td->o.rwmix[DDIR_WRITE] = *val;
 288         td->o.rwmix[DDIR_READ] = 100 - *val;
 289         return 0;
 290 }
 291
 292 #ifdef FIO_HAVE_IOPRIO
 293 static int str_prioclass_cb(void *data, unsigned long long *val)
 294 {
 295         struct thread_data *td = data;
 296         unsigned short mask;
 297
 298         /*
 299          * mask off old class bits, str_prio_cb() may have set a default class
 300          */
 301         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 302         td->ioprio &= mask;
 303
 304         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 305         td->ioprio_set = 1;
 306         return 0;
 307 }
 308
 309 static int str_prio_cb(void *data, unsigned long long *val)
 310 {
 311         struct thread_data *td = data;
 312
 313         td->ioprio |= *val;
 314
 315         /*
 316          * If no class is set, assume BE
 317          */
 318         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 319                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 320
 321         td->ioprio_set = 1;
 322         return 0;
 323 }
 324 #endif
 325
 326 static int str_exitall_cb(void)
 327 {
 328         exitall_on_terminate = 1;
 329         return 0;
 330 }
 331
 332 #ifdef FIO_HAVE_CPU_AFFINITY
 333 static int str_cpumask_cb(void *data, unsigned long long *val)
 334 {
 335         struct thread_data *td = data;
 336         unsigned int i;
 337         long max_cpu;
 338         int ret;
 339
 340         ret = fio_cpuset_init(&td->o.cpumask);
 341         if (ret < 0) {
 342                 log_err("fio: cpuset_init failed\n");
 343                 td_verror(td, ret, "fio_cpuset_init");
 344                 return 1;
 345         }
 346
 347         max_cpu = cpus_online();
 348
 349         for (i = 0; i < sizeof(int) * 8; i++) {
 350                 if ((1 << i) & *val) {
 351                         if (i > max_cpu) {
 352                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 353                                                                 max_cpu);
 354                                 return 1;
 355                         }
 356                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 357                         fio_cpu_set(&td->o.cpumask, i);
 358                 }
 359         }
 360
 361         td->o.cpumask_set = 1;
 362         return 0;
 363 }
 364
 365 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 366                             const char *input)
 367 {
 368         char *cpu, *str, *p;
 369         long max_cpu;
 370         int ret = 0;
 371
 372         ret = fio_cpuset_init(mask);
 373         if (ret < 0) {
 374                 log_err("fio: cpuset_init failed\n");
 375                 td_verror(td, ret, "fio_cpuset_init");
 376                 return 1;
 377         }
 378
 379         p = str = strdup(input);
 380
 381         strip_blank_front(&str);
 382         strip_blank_end(str);
 383
 384         max_cpu = cpus_online();
 385
 386         while ((cpu = strsep(&str, ",")) != NULL) {
 387                 char *str2, *cpu2;
 388                 int icpu, icpu2;
 389
 390                 if (!strlen(cpu))
 391                         break;
 392
 393                 str2 = cpu;
 394                 icpu2 = -1;
 395                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 396                         if (!strlen(cpu2))
 397                                 break;
 398
 399                         icpu2 = atoi(cpu2);
 400                 }
 401
 402                 icpu = atoi(cpu);
 403                 if (icpu2 == -1)
 404                         icpu2 = icpu;
 405                 while (icpu <= icpu2) {
 406                         if (icpu >= FIO_MAX_CPUS) {
 407                                 log_err("fio: your OS only supports up to"
 408                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 409                                 ret = 1;
 410                                 break;
 411                         }
 412                         if (icpu > max_cpu) {
 413                                 log_err("fio: CPU %d too large (max=%ld)\n",
 414                                                         icpu, max_cpu);
 415                                 ret = 1;
 416                                 break;
 417                         }
 418
 419                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 420                         fio_cpu_set(mask, icpu);
 421                         icpu++;
 422                 }
 423                 if (ret)
 424                         break;
 425         }
 426
 427         free(p);
 428         if (!ret)
 429                 td->o.cpumask_set = 1;
 430         return ret;
 431 }
 432
 433 static int str_cpus_allowed_cb(void *data, const char *input)
 434 {
 435         struct thread_data *td = data;
 436         int ret;
 437
 438         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 439         if (!ret)
 440                 td->o.cpumask_set = 1;
 441
 442         return ret;
 443 }
 444
 445 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 446 {
 447         struct thread_data *td = data;
 448         int ret;
 449
 450         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 451         if (!ret)
 452                 td->o.verify_cpumask_set = 1;
 453
 454         return ret;
 455 }
 456 #endif
 457
 458 #ifdef FIO_HAVE_TRIM
 459 static int str_verify_trim_cb(void *data, unsigned long long *val)
 460 {
 461         struct thread_data *td = data;
 462
 463         td->o.trim_percentage = *val;
 464         return 0;
 465 }
 466 #endif
 467
 468 static int str_fst_cb(void *data, const char *str)
 469 {
 470         struct thread_data *td = data;
 471         char *nr = get_opt_postfix(str);
 472
 473         td->file_service_nr = 1;
 474         if (nr) {
 475                 td->file_service_nr = atoi(nr);
 476                 free(nr);
 477         }
 478
 479         return 0;
 480 }
 481
 482 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 483 static int str_sfr_cb(void *data, const char *str)
 484 {
 485         struct thread_data *td = data;
 486         char *nr = get_opt_postfix(str);
 487
 488         td->sync_file_range_nr = 1;
 489         if (nr) {
 490                 td->sync_file_range_nr = atoi(nr);
 491                 free(nr);
 492         }
 493
 494         return 0;
 495 }
 496 #endif
 497
 498 static int check_dir(struct thread_data *td, char *fname)
 499 {
 500 #if 0
 501         char file[PATH_MAX], *dir;
 502         int elen = 0;
 503
 504         if (td->o.directory) {
 505                 strcpy(file, td->o.directory);
 506                 strcat(file, "/");
 507                 elen = strlen(file);
 508         }
 509
 510         sprintf(file + elen, "%s", fname);
 511         dir = dirname(file);
 512
 513         {
 514         struct stat sb;
 515         /*
 516          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 517          * yet, so we can't do this check right here...
 518          */
 519         if (lstat(dir, &sb) < 0) {
 520                 int ret = errno;
 521
 522                 log_err("fio: %s is not a directory\n", dir);
 523                 td_verror(td, ret, "lstat");
 524                 return 1;
 525         }
 526
 527         if (!S_ISDIR(sb.st_mode)) {
 528                 log_err("fio: %s is not a directory\n", dir);
 529                 return 1;
 530         }
 531         }
 532 #endif
 533
 534         return 0;
 535 }
 536
 537 /*
 538  * Return next file in the string. Files are separated with ':'. If the ':'
 539  * is escaped with a '\', then that ':' is part of the filename and does not
 540  * indicate a new file.
 541  */
 542 static char *get_next_file_name(char **ptr)
 543 {
 544         char *str = *ptr;
 545         char *p, *start;
 546
 547         if (!str || !strlen(str))
 548                 return NULL;
 549
 550         start = str;
 551         do {
 552                 /*
 553                  * No colon, we are done
 554                  */
 555                 p = strchr(str, ':');
 556                 if (!p) {
 557                         *ptr = NULL;
 558                         break;
 559                 }
 560
 561                 /*
 562                  * We got a colon, but it's the first character. Skip and
 563                  * continue
 564                  */
 565                 if (p == start) {
 566                         str = ++start;
 567                         continue;
 568                 }
 569
 570                 if (*(p - 1) != '\\') {
 571                         *p = '\0';
 572                         *ptr = p + 1;
 573                         break;
 574                 }
 575
 576                 memmove(p - 1, p, strlen(p) + 1);
 577                 str = p;
 578         } while (1);
 579
 580         return start;
 581 }
 582
 583 static int str_filename_cb(void *data, const char *input)
 584 {
 585         struct thread_data *td = data;
 586         char *fname, *str, *p;
 587
 588         p = str = strdup(input);
 589
 590         strip_blank_front(&str);
 591         strip_blank_end(str);
 592
 593         if (!td->files_index)
 594                 td->o.nr_files = 0;
 595
 596         while ((fname = get_next_file_name(&str)) != NULL) {
 597                 if (!strlen(fname))
 598                         break;
 599                 if (check_dir(td, fname)) {
 600                         free(p);
 601                         return 1;
 602                 }
 603                 add_file(td, fname);
 604                 td->o.nr_files++;
 605         }
 606
 607         free(p);
 608         return 0;
 609 }
 610
 611 static int str_directory_cb(void *data, const char fio_unused *str)
 612 {
 613         struct thread_data *td = data;
 614         struct stat sb;
 615
 616         if (lstat(td->o.directory, &sb) < 0) {
 617                 int ret = errno;
 618
 619                 log_err("fio: %s is not a directory\n", td->o.directory);
 620                 td_verror(td, ret, "lstat");
 621                 return 1;
 622         }
 623         if (!S_ISDIR(sb.st_mode)) {
 624                 log_err("fio: %s is not a directory\n", td->o.directory);
 625                 return 1;
 626         }
 627
 628         return 0;
 629 }
 630
 631 static int str_opendir_cb(void *data, const char fio_unused *str)
 632 {
 633         struct thread_data *td = data;
 634
 635         if (!td->files_index)
 636                 td->o.nr_files = 0;
 637
 638         return add_dir_files(td, td->o.opendir);
 639 }
 640
 641 static int str_verify_offset_cb(void *data, unsigned long long *off)
 642 {
 643         struct thread_data *td = data;
 644
 645         if (*off && *off < sizeof(struct verify_header)) {
 646                 log_err("fio: verify_offset too small\n");
 647                 return 1;
 648         }
 649
 650         td->o.verify_offset = *off;
 651         return 0;
 652 }
 653
 654 static int str_verify_pattern_cb(void *data, const char *input)
 655 {
 656         struct thread_data *td = data;
 657         long off;
 658         int i = 0, j = 0, len, k, base = 10;
 659         char* loc1, * loc2;
 660
 661         loc1 = strstr(input, "0x");
 662         loc2 = strstr(input, "0X");
 663         if (loc1 || loc2)
 664                 base = 16;
 665         off = strtol(input, NULL, base);
 666         if (off != LONG_MAX || errno != ERANGE) {
 667                 while (off) {
 668                         td->o.verify_pattern[i] = off & 0xff;
 669                         off >>= 8;
 670                         i++;
 671                 }
 672         } else {
 673                 len = strlen(input);
 674                 k = len - 1;
 675                 if (base == 16) {
 676                         if (loc1)
 677                                 j = loc1 - input + 2;
 678                         else
 679                                 j = loc2 - input + 2;
 680                 } else
 681                         return 1;
 682                 if (len - j < MAX_PATTERN_SIZE * 2) {
 683                         while (k >= j) {
 684                                 off = converthexchartoint(input[k--]);
 685                                 if (k >= j)
 686                                         off += (converthexchartoint(input[k--])
 687                                                 * 16);
 688                                 td->o.verify_pattern[i++] = (char) off;
 689                         }
 690                 }
 691         }
 692         td->o.verify_pattern_bytes = i;
 693         /*
 694          * VERIFY_META could already be set
 695          */
 696         if (td->o.verify == VERIFY_NONE)
 697                 td->o.verify = VERIFY_PATTERN;
 698         return 0;
 699 }
 700
 701 static int str_lockfile_cb(void *data, const char *str)
 702 {
 703         struct thread_data *td = data;
 704         char *nr = get_opt_postfix(str);
 705
 706         td->o.lockfile_batch = 1;
 707         if (nr) {
 708                 td->o.lockfile_batch = atoi(nr);
 709                 free(nr);
 710         }
 711
 712         return 0;
 713 }
 714
 715 static int str_write_bw_log_cb(void *data, const char *str)
 716 {
 717         struct thread_data *td = data;
 718
 719         if (str)
 720                 td->o.bw_log_file = strdup(str);
 721
 722         td->o.write_bw_log = 1;
 723         return 0;
 724 }
 725
 726 static int str_write_lat_log_cb(void *data, const char *str)
 727 {
 728         struct thread_data *td = data;
 729
 730         if (str)
 731                 td->o.lat_log_file = strdup(str);
 732
 733         td->o.write_lat_log = 1;
 734         return 0;
 735 }
 736
 737 static int str_gtod_reduce_cb(void *data, int *il)
 738 {
 739         struct thread_data *td = data;
 740         int val = *il;
 741
 742         td->o.disable_lat = !!val;
 743         td->o.disable_clat = !!val;
 744         td->o.disable_slat = !!val;
 745         td->o.disable_bw = !!val;
 746         if (val)
 747                 td->tv_cache_mask = 63;
 748
 749         return 0;
 750 }
 751
 752 static int str_gtod_cpu_cb(void *data, long long *il)
 753 {
 754         struct thread_data *td = data;
 755         int val = *il;
 756
 757         td->o.gtod_cpu = val;
 758         td->o.gtod_offload = 1;
 759         return 0;
 760 }
 761
 762 static int str_size_cb(void *data, unsigned long long *__val)
 763 {
 764         struct thread_data *td = data;
 765         unsigned long long v = *__val;
 766
 767         if (parse_is_percent(v)) {
 768                 td->o.size = 0;
 769                 td->o.size_percent = -1ULL - v;
 770         } else
 771                 td->o.size = v;
 772
 773         return 0;
 774 }
 775
 776 static int rw_verify(struct fio_option *o, void *data)
 777 {
 778         struct thread_data *td = data;
 779
 780         if (read_only && td_write(td)) {
 781                 log_err("fio: job <%s> has write bit set, but fio is in"
 782                         " read-only mode\n", td->o.name);
 783                 return 1;
 784         }
 785
 786         return 0;
 787 }
 788
 789 static int gtod_cpu_verify(struct fio_option *o, void *data)
 790 {
 791 #ifndef FIO_HAVE_CPU_AFFINITY
 792         struct thread_data *td = data;
 793
 794         if (td->o.gtod_cpu) {
 795                 log_err("fio: platform must support CPU affinity for"
 796                         "gettimeofday() offloading\n");
 797                 return 1;
 798         }
 799 #endif
 800
 801         return 0;
 802 }
 803
 804 static int kb_base_verify(struct fio_option *o, void *data)
 805 {
 806         struct thread_data *td = data;
 807
 808         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
 809                 log_err("fio: kb_base set to nonsensical value: %u\n",
 810                                 td->o.kb_base);
 811                 return 1;
 812         }
 813
 814         return 0;
 815 }
 816
 817 #define __stringify_1(x)        #x
 818 #define __stringify(x)          __stringify_1(x)
 819
 820 /*
 821  * Map of job/command line options
 822  */
 823 static struct fio_option options[FIO_MAX_OPTS] = {
 824         {
 825                 .name   = "description",
 826                 .type   = FIO_OPT_STR_STORE,
 827                 .off1   = td_var_offset(description),
 828                 .help   = "Text job description",
 829         },
 830         {
 831                 .name   = "name",
 832                 .type   = FIO_OPT_STR_STORE,
 833                 .off1   = td_var_offset(name),
 834                 .help   = "Name of this job",
 835         },
 836         {
 837                 .name   = "directory",
 838                 .type   = FIO_OPT_STR_STORE,
 839                 .off1   = td_var_offset(directory),
 840                 .cb     = str_directory_cb,
 841                 .help   = "Directory to store files in",
 842         },
 843         {
 844                 .name   = "filename",
 845                 .type   = FIO_OPT_STR_STORE,
 846                 .off1   = td_var_offset(filename),
 847                 .cb     = str_filename_cb,
 848                 .prio   = -1, /* must come after "directory" */
 849                 .help   = "File(s) to use for the workload",
 850         },
 851         {
 852                 .name   = "kb_base",
 853                 .type   = FIO_OPT_INT,
 854                 .off1   = td_var_offset(kb_base),
 855                 .verify = kb_base_verify,
 856                 .prio   = 1,
 857                 .def    = "1024",
 858                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
 859         },
 860         {
 861                 .name   = "lockfile",
 862                 .type   = FIO_OPT_STR,
 863                 .cb     = str_lockfile_cb,
 864                 .off1   = td_var_offset(file_lock_mode),
 865                 .help   = "Lock file when doing IO to it",
 866                 .parent = "filename",
 867                 .def    = "none",
 868                 .posval = {
 869                           { .ival = "none",
 870                             .oval = FILE_LOCK_NONE,
 871                             .help = "No file locking",
 872                           },
 873                           { .ival = "exclusive",
 874                             .oval = FILE_LOCK_EXCLUSIVE,
 875                             .help = "Exclusive file lock",
 876                           },
 877                           {
 878                             .ival = "readwrite",
 879                             .oval = FILE_LOCK_READWRITE,
 880                             .help = "Read vs write lock",
 881                           },
 882                 },
 883         },
 884         {
 885                 .name   = "opendir",
 886                 .type   = FIO_OPT_STR_STORE,
 887                 .off1   = td_var_offset(opendir),
 888                 .cb     = str_opendir_cb,
 889                 .help   = "Recursively add files from this directory and down",
 890         },
 891         {
 892                 .name   = "rw",
 893                 .alias  = "readwrite",
 894                 .type   = FIO_OPT_STR,
 895                 .cb     = str_rw_cb,
 896                 .off1   = td_var_offset(td_ddir),
 897                 .help   = "IO direction",
 898                 .def    = "read",
 899                 .verify = rw_verify,
 900                 .posval = {
 901                           { .ival = "read",
 902                             .oval = TD_DDIR_READ,
 903                             .help = "Sequential read",
 904                           },
 905                           { .ival = "write",
 906                             .oval = TD_DDIR_WRITE,
 907                             .help = "Sequential write",
 908                           },
 909                           { .ival = "randread",
 910                             .oval = TD_DDIR_RANDREAD,
 911                             .help = "Random read",
 912                           },
 913                           { .ival = "randwrite",
 914                             .oval = TD_DDIR_RANDWRITE,
 915                             .help = "Random write",
 916                           },
 917                           { .ival = "rw",
 918                             .oval = TD_DDIR_RW,
 919                             .help = "Sequential read and write mix",
 920                           },
 921                           { .ival = "randrw",
 922                             .oval = TD_DDIR_RANDRW,
 923                             .help = "Random read and write mix"
 924                           },
 925                 },
 926         },
 927         {
 928                 .name   = "rw_sequencer",
 929                 .type   = FIO_OPT_STR,
 930                 .off1   = td_var_offset(rw_seq),
 931                 .help   = "IO offset generator modifier",
 932                 .def    = "sequential",
 933                 .posval = {
 934                           { .ival = "sequential",
 935                             .oval = RW_SEQ_SEQ,
 936                             .help = "Generate sequential offsets",
 937                           },
 938                           { .ival = "identical",
 939                             .oval = RW_SEQ_IDENT,
 940                             .help = "Generate identical offsets",
 941                           },
 942                 },
 943         },
 944
 945         {
 946                 .name   = "ioengine",
 947                 .type   = FIO_OPT_STR_STORE,
 948                 .off1   = td_var_offset(ioengine),
 949                 .help   = "IO engine to use",
 950                 .def    = FIO_PREFERRED_ENGINE,
 951                 .posval = {
 952                           { .ival = "sync",
 953                             .help = "Use read/write",
 954                           },
 955                           { .ival = "psync",
 956                             .help = "Use pread/pwrite",
 957                           },
 958                           { .ival = "vsync",
 959                             .help = "Use readv/writev",
 960                           },
 961 #ifdef FIO_HAVE_LIBAIO
 962                           { .ival = "libaio",
 963                             .help = "Linux native asynchronous IO",
 964                           },
 965 #endif
 966 #ifdef FIO_HAVE_POSIXAIO
 967                           { .ival = "posixaio",
 968                             .help = "POSIX asynchronous IO",
 969                           },
 970 #endif
 971 #ifdef FIO_HAVE_SOLARISAIO
 972                           { .ival = "solarisaio",
 973                             .help = "Solaris native asynchronous IO",
 974                           },
 975 #endif
 976 #ifdef FIO_HAVE_WINDOWSAIO
 977                           { .ival = "windowsaio",
 978                             .help = "Windows native asynchronous IO"
 979                           },
 980 #endif
 981                           { .ival = "mmap",
 982                             .help = "Memory mapped IO"
 983                           },
 984 #ifdef FIO_HAVE_SPLICE
 985                           { .ival = "splice",
 986                             .help = "splice/vmsplice based IO",
 987                           },
 988                           { .ival = "netsplice",
 989                             .help = "splice/vmsplice to/from the network",
 990                           },
 991 #endif
 992 #ifdef FIO_HAVE_SGIO
 993                           { .ival = "sg",
 994                             .help = "SCSI generic v3 IO",
 995                           },
 996 #endif
 997                           { .ival = "null",
 998                             .help = "Testing engine (no data transfer)",
 999                           },
1000                           { .ival = "net",
1001                             .help = "Network IO",
1002                           },
1003 #ifdef FIO_HAVE_SYSLET
1004                           { .ival = "syslet-rw",
1005                             .help = "syslet enabled async pread/pwrite IO",
1006                           },
1007 #endif
1008                           { .ival = "cpuio",
1009                             .help = "CPU cycle burner engine",
1010                           },
1011 #ifdef FIO_HAVE_GUASI
1012                           { .ival = "guasi",
1013                             .help = "GUASI IO engine",
1014                           },
1015 #endif
1016 #ifdef FIO_HAVE_BINJECT
1017                           { .ival = "binject",
1018                             .help = "binject direct inject block engine",
1019                           },
1020 #endif
1021 #ifdef FIO_HAVE_RDMA
1022                           { .ival = "rdma",
1023                             .help = "RDMA IO engine",
1024                           },
1025 #endif
1026                           { .ival = "external",
1027                             .help = "Load external engine (append name)",
1028                           },
1029                 },
1030         },
1031         {
1032                 .name   = "iodepth",
1033                 .type   = FIO_OPT_INT,
1034                 .off1   = td_var_offset(iodepth),
1035                 .help   = "Number of IO buffers to keep in flight",
1036                 .minval = 1,
1037                 .def    = "1",
1038         },
1039         {
1040                 .name   = "iodepth_batch",
1041                 .alias  = "iodepth_batch_submit",
1042                 .type   = FIO_OPT_INT,
1043                 .off1   = td_var_offset(iodepth_batch),
1044                 .help   = "Number of IO buffers to submit in one go",
1045                 .parent = "iodepth",
1046                 .minval = 1,
1047                 .def    = "1",
1048         },
1049         {
1050                 .name   = "iodepth_batch_complete",
1051                 .type   = FIO_OPT_INT,
1052                 .off1   = td_var_offset(iodepth_batch_complete),
1053                 .help   = "Number of IO buffers to retrieve in one go",
1054                 .parent = "iodepth",
1055                 .minval = 0,
1056                 .def    = "1",
1057         },
1058         {
1059                 .name   = "iodepth_low",
1060                 .type   = FIO_OPT_INT,
1061                 .off1   = td_var_offset(iodepth_low),
1062                 .help   = "Low water mark for queuing depth",
1063                 .parent = "iodepth",
1064         },
1065         {
1066                 .name   = "size",
1067                 .type   = FIO_OPT_STR_VAL,
1068                 .cb     = str_size_cb,
1069                 .help   = "Total size of device or files",
1070         },
1071         {
1072                 .name   = "fill_device",
1073                 .alias  = "fill_fs",
1074                 .type   = FIO_OPT_BOOL,
1075                 .off1   = td_var_offset(fill_device),
1076                 .help   = "Write until an ENOSPC error occurs",
1077                 .def    = "0",
1078         },
1079         {
1080                 .name   = "filesize",
1081                 .type   = FIO_OPT_STR_VAL,
1082                 .off1   = td_var_offset(file_size_low),
1083                 .off2   = td_var_offset(file_size_high),
1084                 .minval = 1,
1085                 .help   = "Size of individual files",
1086         },
1087         {
1088                 .name   = "offset",
1089                 .alias  = "fileoffset",
1090                 .type   = FIO_OPT_STR_VAL,
1091                 .off1   = td_var_offset(start_offset),
1092                 .help   = "Start IO from this offset",
1093                 .def    = "0",
1094         },
1095         {
1096                 .name   = "bs",
1097                 .alias  = "blocksize",
1098                 .type   = FIO_OPT_INT,
1099                 .off1   = td_var_offset(bs[DDIR_READ]),
1100                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1101                 .minval = 1,
1102                 .help   = "Block size unit",
1103                 .def    = "4k",
1104                 .parent = "rw",
1105         },
1106         {
1107                 .name   = "ba",
1108                 .alias  = "blockalign",
1109                 .type   = FIO_OPT_INT,
1110                 .off1   = td_var_offset(ba[DDIR_READ]),
1111                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1112                 .minval = 1,
1113                 .help   = "IO block offset alignment",
1114                 .parent = "rw",
1115         },
1116         {
1117                 .name   = "bsrange",
1118                 .alias  = "blocksize_range",
1119                 .type   = FIO_OPT_RANGE,
1120                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1121                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1122                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1123                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1124                 .minval = 1,
1125                 .help   = "Set block size range (in more detail than bs)",
1126                 .parent = "rw",
1127         },
1128         {
1129                 .name   = "bssplit",
1130                 .type   = FIO_OPT_STR,
1131                 .cb     = str_bssplit_cb,
1132                 .help   = "Set a specific mix of block sizes",
1133                 .parent = "rw",
1134         },
1135         {
1136                 .name   = "bs_unaligned",
1137                 .alias  = "blocksize_unaligned",
1138                 .type   = FIO_OPT_STR_SET,
1139                 .off1   = td_var_offset(bs_unaligned),
1140                 .help   = "Don't sector align IO buffer sizes",
1141                 .parent = "rw",
1142         },
1143         {
1144                 .name   = "randrepeat",
1145                 .type   = FIO_OPT_BOOL,
1146                 .off1   = td_var_offset(rand_repeatable),
1147                 .help   = "Use repeatable random IO pattern",
1148                 .def    = "1",
1149                 .parent = "rw",
1150         },
1151         {
1152                 .name   = "use_os_rand",
1153                 .type   = FIO_OPT_BOOL,
1154                 .off1   = td_var_offset(use_os_rand),
1155                 .help   = "Set to use OS random generator",
1156                 .def    = "0",
1157                 .parent = "rw",
1158         },
1159         {
1160                 .name   = "norandommap",
1161                 .type   = FIO_OPT_STR_SET,
1162                 .off1   = td_var_offset(norandommap),
1163                 .help   = "Accept potential duplicate random blocks",
1164                 .parent = "rw",
1165         },
1166         {
1167                 .name   = "softrandommap",
1168                 .type   = FIO_OPT_BOOL,
1169                 .off1   = td_var_offset(softrandommap),
1170                 .help   = "Set norandommap if randommap allocation fails",
1171                 .parent = "norandommap",
1172                 .def    = "0",
1173         },
1174         {
1175                 .name   = "nrfiles",
1176                 .alias  = "nr_files",
1177                 .type   = FIO_OPT_INT,
1178                 .off1   = td_var_offset(nr_files),
1179                 .help   = "Split job workload between this number of files",
1180                 .def    = "1",
1181         },
1182         {
1183                 .name   = "openfiles",
1184                 .type   = FIO_OPT_INT,
1185                 .off1   = td_var_offset(open_files),
1186                 .help   = "Number of files to keep open at the same time",
1187         },
1188         {
1189                 .name   = "file_service_type",
1190                 .type   = FIO_OPT_STR,
1191                 .cb     = str_fst_cb,
1192                 .off1   = td_var_offset(file_service_type),
1193                 .help   = "How to select which file to service next",
1194                 .def    = "roundrobin",
1195                 .posval = {
1196                           { .ival = "random",
1197                             .oval = FIO_FSERVICE_RANDOM,
1198                             .help = "Choose a file at random",
1199                           },
1200                           { .ival = "roundrobin",
1201                             .oval = FIO_FSERVICE_RR,
1202                             .help = "Round robin select files",
1203                           },
1204                           { .ival = "sequential",
1205                             .oval = FIO_FSERVICE_SEQ,
1206                             .help = "Finish one file before moving to the next",
1207                           },
1208                 },
1209                 .parent = "nrfiles",
1210         },
1211 #ifdef FIO_HAVE_FALLOCATE
1212         {
1213                 .name   = "fallocate",
1214                 .type   = FIO_OPT_STR,
1215                 .off1   = td_var_offset(fallocate_mode),
1216                 .help   = "Whether pre-allocation is performed when laying out files",
1217                 .def    = "posix",
1218                 .posval = {
1219                           { .ival = "none",
1220                             .oval = FIO_FALLOCATE_NONE,
1221                             .help = "Do not pre-allocate space",
1222                           },
1223                           { .ival = "posix",
1224                             .oval = FIO_FALLOCATE_POSIX,
1225                             .help = "Use posix_fallocate()",
1226                           },
1227 #ifdef FIO_HAVE_LINUX_FALLOCATE
1228                           { .ival = "keep",
1229                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1230                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1231                           },
1232 #endif
1233                           /* Compatibility with former boolean values */
1234                           { .ival = "0",
1235                             .oval = FIO_FALLOCATE_NONE,
1236                             .help = "Alias for 'none'",
1237                           },
1238                           { .ival = "1",
1239                             .oval = FIO_FALLOCATE_POSIX,
1240                             .help = "Alias for 'posix'",
1241                           },
1242                 },
1243         },
1244 #endif  /* FIO_HAVE_FALLOCATE */
1245         {
1246                 .name   = "fadvise_hint",
1247                 .type   = FIO_OPT_BOOL,
1248                 .off1   = td_var_offset(fadvise_hint),
1249                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1250                 .def    = "1",
1251         },
1252         {
1253                 .name   = "fsync",
1254                 .type   = FIO_OPT_INT,
1255                 .off1   = td_var_offset(fsync_blocks),
1256                 .help   = "Issue fsync for writes every given number of blocks",
1257                 .def    = "0",
1258         },
1259         {
1260                 .name   = "fdatasync",
1261                 .type   = FIO_OPT_INT,
1262                 .off1   = td_var_offset(fdatasync_blocks),
1263                 .help   = "Issue fdatasync for writes every given number of blocks",
1264                 .def    = "0",
1265         },
1266         {
1267                 .name   = "write_barrier",
1268                 .type   = FIO_OPT_INT,
1269                 .off1   = td_var_offset(barrier_blocks),
1270                 .help   = "Make every Nth write a barrier write",
1271                 .def    = "0",
1272         },
1273 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1274         {
1275                 .name   = "sync_file_range",
1276                 .posval = {
1277                           { .ival = "wait_before",
1278                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1279                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1280                             .or   = 1,
1281                           },
1282                           { .ival = "write",
1283                             .oval = SYNC_FILE_RANGE_WRITE,
1284                             .help = "SYNC_FILE_RANGE_WRITE",
1285                             .or   = 1,
1286                           },
1287                           {
1288                             .ival = "wait_after",
1289                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1290                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1291                             .or   = 1,
1292                           },
1293                 },
1294                 .type   = FIO_OPT_STR_MULTI,
1295                 .cb     = str_sfr_cb,
1296                 .off1   = td_var_offset(sync_file_range),
1297                 .help   = "Use sync_file_range()",
1298         },
1299 #endif
1300         {
1301                 .name   = "direct",
1302                 .type   = FIO_OPT_BOOL,
1303                 .off1   = td_var_offset(odirect),
1304                 .help   = "Use O_DIRECT IO (negates buffered)",
1305                 .def    = "0",
1306         },
1307         {
1308                 .name   = "buffered",
1309                 .type   = FIO_OPT_BOOL,
1310                 .off1   = td_var_offset(odirect),
1311                 .neg    = 1,
1312                 .help   = "Use buffered IO (negates direct)",
1313                 .def    = "1",
1314         },
1315         {
1316                 .name   = "overwrite",
1317                 .type   = FIO_OPT_BOOL,
1318                 .off1   = td_var_offset(overwrite),
1319                 .help   = "When writing, set whether to overwrite current data",
1320                 .def    = "0",
1321         },
1322         {
1323                 .name   = "loops",
1324                 .type   = FIO_OPT_INT,
1325                 .off1   = td_var_offset(loops),
1326                 .help   = "Number of times to run the job",
1327                 .def    = "1",
1328         },
1329         {
1330                 .name   = "numjobs",
1331                 .type   = FIO_OPT_INT,
1332                 .off1   = td_var_offset(numjobs),
1333                 .help   = "Duplicate this job this many times",
1334                 .def    = "1",
1335         },
1336         {
1337                 .name   = "startdelay",
1338                 .type   = FIO_OPT_STR_VAL_TIME,
1339                 .off1   = td_var_offset(start_delay),
1340                 .help   = "Only start job when this period has passed",
1341                 .def    = "0",
1342         },
1343         {
1344                 .name   = "runtime",
1345                 .alias  = "timeout",
1346                 .type   = FIO_OPT_STR_VAL_TIME,
1347                 .off1   = td_var_offset(timeout),
1348                 .help   = "Stop workload when this amount of time has passed",
1349                 .def    = "0",
1350         },
1351         {
1352                 .name   = "time_based",
1353                 .type   = FIO_OPT_STR_SET,
1354                 .off1   = td_var_offset(time_based),
1355                 .help   = "Keep running until runtime/timeout is met",
1356         },
1357         {
1358                 .name   = "ramp_time",
1359                 .type   = FIO_OPT_STR_VAL_TIME,
1360                 .off1   = td_var_offset(ramp_time),
1361                 .help   = "Ramp up time before measuring performance",
1362         },
1363         {
1364                 .name   = "clocksource",
1365                 .type   = FIO_OPT_STR,
1366                 .cb     = fio_clock_source_cb,
1367                 .off1   = td_var_offset(clocksource),
1368                 .help   = "What type of timing source to use",
1369                 .posval = {
1370                           { .ival = "gettimeofday",
1371                             .oval = CS_GTOD,
1372                             .help = "Use gettimeofday(2) for timing",
1373                           },
1374                           { .ival = "clock_gettime",
1375                             .oval = CS_CGETTIME,
1376                             .help = "Use clock_gettime(2) for timing",
1377                           },
1378 #ifdef ARCH_HAVE_CPU_CLOCK
1379                           { .ival = "cpu",
1380                             .oval = CS_CPUCLOCK,
1381                             .help = "Use CPU private clock",
1382                           },
1383 #endif
1384                 },
1385         },
1386         {
1387                 .name   = "mem",
1388                 .alias  = "iomem",
1389                 .type   = FIO_OPT_STR,
1390                 .cb     = str_mem_cb,
1391                 .off1   = td_var_offset(mem_type),
1392                 .help   = "Backing type for IO buffers",
1393                 .def    = "malloc",
1394                 .posval = {
1395                           { .ival = "malloc",
1396                             .oval = MEM_MALLOC,
1397                             .help = "Use malloc(3) for IO buffers",
1398                           },
1399                           { .ival = "shm",
1400                             .oval = MEM_SHM,
1401                             .help = "Use shared memory segments for IO buffers",
1402                           },
1403 #ifdef FIO_HAVE_HUGETLB
1404                           { .ival = "shmhuge",
1405                             .oval = MEM_SHMHUGE,
1406                             .help = "Like shm, but use huge pages",
1407                           },
1408 #endif
1409                           { .ival = "mmap",
1410                             .oval = MEM_MMAP,
1411                             .help = "Use mmap(2) (file or anon) for IO buffers",
1412                           },
1413 #ifdef FIO_HAVE_HUGETLB
1414                           { .ival = "mmaphuge",
1415                             .oval = MEM_MMAPHUGE,
1416                             .help = "Like mmap, but use huge pages",
1417                           },
1418 #endif
1419                   },
1420         },
1421         {
1422                 .name   = "iomem_align",
1423                 .alias  = "mem_align",
1424                 .type   = FIO_OPT_INT,
1425                 .off1   = td_var_offset(mem_align),
1426                 .minval = 0,
1427                 .help   = "IO memory buffer offset alignment",
1428                 .def    = "0",
1429                 .parent = "iomem",
1430         },
1431         {
1432                 .name   = "verify",
1433                 .type   = FIO_OPT_STR,
1434                 .off1   = td_var_offset(verify),
1435                 .help   = "Verify data written",
1436                 .cb     = str_verify_cb,
1437                 .def    = "0",
1438                 .posval = {
1439                           { .ival = "0",
1440                             .oval = VERIFY_NONE,
1441                             .help = "Don't do IO verification",
1442                           },
1443                           { .ival = "md5",
1444                             .oval = VERIFY_MD5,
1445                             .help = "Use md5 checksums for verification",
1446                           },
1447                           { .ival = "crc64",
1448                             .oval = VERIFY_CRC64,
1449                             .help = "Use crc64 checksums for verification",
1450                           },
1451                           { .ival = "crc32",
1452                             .oval = VERIFY_CRC32,
1453                             .help = "Use crc32 checksums for verification",
1454                           },
1455                           { .ival = "crc32c-intel",
1456                             .oval = VERIFY_CRC32C_INTEL,
1457                             .help = "Use hw crc32c checksums for verification",
1458                           },
1459                           { .ival = "crc32c",
1460                             .oval = VERIFY_CRC32C,
1461                             .help = "Use crc32c checksums for verification",
1462                           },
1463                           { .ival = "crc16",
1464                             .oval = VERIFY_CRC16,
1465                             .help = "Use crc16 checksums for verification",
1466                           },
1467                           { .ival = "crc7",
1468                             .oval = VERIFY_CRC7,
1469                             .help = "Use crc7 checksums for verification",
1470                           },
1471                           { .ival = "sha1",
1472                             .oval = VERIFY_SHA1,
1473                             .help = "Use sha1 checksums for verification",
1474                           },
1475                           { .ival = "sha256",
1476                             .oval = VERIFY_SHA256,
1477                             .help = "Use sha256 checksums for verification",
1478                           },
1479                           { .ival = "sha512",
1480                             .oval = VERIFY_SHA512,
1481                             .help = "Use sha512 checksums for verification",
1482                           },
1483                           { .ival = "meta",
1484                             .oval = VERIFY_META,
1485                             .help = "Use io information",
1486                           },
1487                           {
1488                             .ival = "null",
1489                             .oval = VERIFY_NULL,
1490                             .help = "Pretend to verify",
1491                           },
1492                 },
1493         },
1494         {
1495                 .name   = "do_verify",
1496                 .type   = FIO_OPT_BOOL,
1497                 .off1   = td_var_offset(do_verify),
1498                 .help   = "Run verification stage after write",
1499                 .def    = "1",
1500                 .parent = "verify",
1501         },
1502         {
1503                 .name   = "verifysort",
1504                 .type   = FIO_OPT_BOOL,
1505                 .off1   = td_var_offset(verifysort),
1506                 .help   = "Sort written verify blocks for read back",
1507                 .def    = "1",
1508                 .parent = "verify",
1509         },
1510         {
1511                 .name   = "verify_interval",
1512                 .type   = FIO_OPT_INT,
1513                 .off1   = td_var_offset(verify_interval),
1514                 .minval = 2 * sizeof(struct verify_header),
1515                 .help   = "Store verify buffer header every N bytes",
1516                 .parent = "verify",
1517         },
1518         {
1519                 .name   = "verify_offset",
1520                 .type   = FIO_OPT_INT,
1521                 .help   = "Offset verify header location by N bytes",
1522                 .def    = "0",
1523                 .cb     = str_verify_offset_cb,
1524                 .parent = "verify",
1525         },
1526         {
1527                 .name   = "verify_pattern",
1528                 .type   = FIO_OPT_STR,
1529                 .cb     = str_verify_pattern_cb,
1530                 .help   = "Fill pattern for IO buffers",
1531                 .parent = "verify",
1532         },
1533         {
1534                 .name   = "verify_fatal",
1535                 .type   = FIO_OPT_BOOL,
1536                 .off1   = td_var_offset(verify_fatal),
1537                 .def    = "0",
1538                 .help   = "Exit on a single verify failure, don't continue",
1539                 .parent = "verify",
1540         },
1541         {
1542                 .name   = "verify_dump",
1543                 .type   = FIO_OPT_BOOL,
1544                 .off1   = td_var_offset(verify_dump),
1545                 .def    = "1",
1546                 .help   = "Dump contents of good and bad blocks on failure",
1547                 .parent = "verify",
1548         },
1549         {
1550                 .name   = "verify_async",
1551                 .type   = FIO_OPT_INT,
1552                 .off1   = td_var_offset(verify_async),
1553                 .def    = "0",
1554                 .help   = "Number of async verifier threads to use",
1555                 .parent = "verify",
1556         },
1557         {
1558                 .name   = "verify_backlog",
1559                 .type   = FIO_OPT_STR_VAL,
1560                 .off1   = td_var_offset(verify_backlog),
1561                 .help   = "Verify after this number of blocks are written",
1562                 .parent = "verify",
1563         },
1564         {
1565                 .name   = "verify_backlog_batch",
1566                 .type   = FIO_OPT_INT,
1567                 .off1   = td_var_offset(verify_batch),
1568                 .help   = "Verify this number of IO blocks",
1569                 .parent = "verify",
1570         },
1571 #ifdef FIO_HAVE_CPU_AFFINITY
1572         {
1573                 .name   = "verify_async_cpus",
1574                 .type   = FIO_OPT_STR,
1575                 .cb     = str_verify_cpus_allowed_cb,
1576                 .help   = "Set CPUs allowed for async verify threads",
1577                 .parent = "verify_async",
1578         },
1579 #endif
1580 #ifdef FIO_HAVE_TRIM
1581         {
1582                 .name   = "trim_percentage",
1583                 .type   = FIO_OPT_INT,
1584                 .cb     = str_verify_trim_cb,
1585                 .maxval = 100,
1586                 .help   = "Number of verify blocks to discard/trim",
1587                 .parent = "verify",
1588                 .def    = "0",
1589         },
1590         {
1591                 .name   = "trim_verify_zero",
1592                 .type   = FIO_OPT_INT,
1593                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1594                 .off1   = td_var_offset(trim_zero),
1595                 .parent = "trim_percentage",
1596                 .def    = "1",
1597         },
1598         {
1599                 .name   = "trim_backlog",
1600                 .type   = FIO_OPT_STR_VAL,
1601                 .off1   = td_var_offset(trim_backlog),
1602                 .help   = "Trim after this number of blocks are written",
1603                 .parent = "trim_percentage",
1604         },
1605         {
1606                 .name   = "trim_backlog_batch",
1607                 .type   = FIO_OPT_INT,
1608                 .off1   = td_var_offset(trim_batch),
1609                 .help   = "Trim this number of IO blocks",
1610                 .parent = "trim_percentage",
1611         },
1612 #endif
1613         {
1614                 .name   = "write_iolog",
1615                 .type   = FIO_OPT_STR_STORE,
1616                 .off1   = td_var_offset(write_iolog_file),
1617                 .help   = "Store IO pattern to file",
1618         },
1619         {
1620                 .name   = "read_iolog",
1621                 .type   = FIO_OPT_STR_STORE,
1622                 .off1   = td_var_offset(read_iolog_file),
1623                 .help   = "Playback IO pattern from file",
1624         },
1625         {
1626                 .name   = "replay_no_stall",
1627                 .type   = FIO_OPT_INT,
1628                 .off1   = td_var_offset(no_stall),
1629                 .def    = "0",
1630                 .parent = "read_iolog",
1631                 .help   = "Playback IO pattern file as fast as possible without stalls",
1632         },
1633         {
1634                 .name   = "replay_redirect",
1635                 .type   = FIO_OPT_STR_STORE,
1636                 .off1   = td_var_offset(replay_redirect),
1637                 .parent = "read_iolog",
1638                 .help   = "Replay all I/O onto this device, regardless of trace device",
1639         },
1640         {
1641                 .name   = "exec_prerun",
1642                 .type   = FIO_OPT_STR_STORE,
1643                 .off1   = td_var_offset(exec_prerun),
1644                 .help   = "Execute this file prior to running job",
1645         },
1646         {
1647                 .name   = "exec_postrun",
1648                 .type   = FIO_OPT_STR_STORE,
1649                 .off1   = td_var_offset(exec_postrun),
1650                 .help   = "Execute this file after running job",
1651         },
1652 #ifdef FIO_HAVE_IOSCHED_SWITCH
1653         {
1654                 .name   = "ioscheduler",
1655                 .type   = FIO_OPT_STR_STORE,
1656                 .off1   = td_var_offset(ioscheduler),
1657                 .help   = "Use this IO scheduler on the backing device",
1658         },
1659 #endif
1660         {
1661                 .name   = "zonesize",
1662                 .type   = FIO_OPT_STR_VAL,
1663                 .off1   = td_var_offset(zone_size),
1664                 .help   = "Give size of an IO zone",
1665                 .def    = "0",
1666         },
1667         {
1668                 .name   = "zoneskip",
1669                 .type   = FIO_OPT_STR_VAL,
1670                 .off1   = td_var_offset(zone_skip),
1671                 .help   = "Space between IO zones",
1672                 .def    = "0",
1673         },
1674         {
1675                 .name   = "lockmem",
1676                 .type   = FIO_OPT_STR_VAL,
1677                 .cb     = str_lockmem_cb,
1678                 .help   = "Lock down this amount of memory",
1679                 .def    = "0",
1680         },
1681         {
1682                 .name   = "rwmixread",
1683                 .type   = FIO_OPT_INT,
1684                 .cb     = str_rwmix_read_cb,
1685                 .maxval = 100,
1686                 .help   = "Percentage of mixed workload that is reads",
1687                 .def    = "50",
1688         },
1689         {
1690                 .name   = "rwmixwrite",
1691                 .type   = FIO_OPT_INT,
1692                 .cb     = str_rwmix_write_cb,
1693                 .maxval = 100,
1694                 .help   = "Percentage of mixed workload that is writes",
1695                 .def    = "50",
1696         },
1697         {
1698                 .name   = "rwmixcycle",
1699                 .type   = FIO_OPT_DEPRECATED,
1700         },
1701         {
1702                 .name   = "nice",
1703                 .type   = FIO_OPT_INT,
1704                 .off1   = td_var_offset(nice),
1705                 .help   = "Set job CPU nice value",
1706                 .minval = -19,
1707                 .maxval = 20,
1708                 .def    = "0",
1709         },
1710 #ifdef FIO_HAVE_IOPRIO
1711         {
1712                 .name   = "prio",
1713                 .type   = FIO_OPT_INT,
1714                 .cb     = str_prio_cb,
1715                 .help   = "Set job IO priority value",
1716                 .minval = 0,
1717                 .maxval = 7,
1718         },
1719         {
1720                 .name   = "prioclass",
1721                 .type   = FIO_OPT_INT,
1722                 .cb     = str_prioclass_cb,
1723                 .help   = "Set job IO priority class",
1724                 .minval = 0,
1725                 .maxval = 3,
1726         },
1727 #endif
1728         {
1729                 .name   = "thinktime",
1730                 .type   = FIO_OPT_INT,
1731                 .off1   = td_var_offset(thinktime),
1732                 .help   = "Idle time between IO buffers (usec)",
1733                 .def    = "0",
1734         },
1735         {
1736                 .name   = "thinktime_spin",
1737                 .type   = FIO_OPT_INT,
1738                 .off1   = td_var_offset(thinktime_spin),
1739                 .help   = "Start think time by spinning this amount (usec)",
1740                 .def    = "0",
1741                 .parent = "thinktime",
1742         },
1743         {
1744                 .name   = "thinktime_blocks",
1745                 .type   = FIO_OPT_INT,
1746                 .off1   = td_var_offset(thinktime_blocks),
1747                 .help   = "IO buffer period between 'thinktime'",
1748                 .def    = "1",
1749                 .parent = "thinktime",
1750         },
1751         {
1752                 .name   = "rate",
1753                 .type   = FIO_OPT_INT,
1754                 .off1   = td_var_offset(rate[0]),
1755                 .off2   = td_var_offset(rate[1]),
1756                 .help   = "Set bandwidth rate",
1757         },
1758         {
1759                 .name   = "ratemin",
1760                 .type   = FIO_OPT_INT,
1761                 .off1   = td_var_offset(ratemin[0]),
1762                 .off2   = td_var_offset(ratemin[1]),
1763                 .help   = "Job must meet this rate or it will be shutdown",
1764                 .parent = "rate",
1765         },
1766         {
1767                 .name   = "rate_iops",
1768                 .type   = FIO_OPT_INT,
1769                 .off1   = td_var_offset(rate_iops[0]),
1770                 .off2   = td_var_offset(rate_iops[1]),
1771                 .help   = "Limit IO used to this number of IO operations/sec",
1772         },
1773         {
1774                 .name   = "rate_iops_min",
1775                 .type   = FIO_OPT_INT,
1776                 .off1   = td_var_offset(rate_iops_min[0]),
1777                 .off2   = td_var_offset(rate_iops_min[1]),
1778                 .help   = "Job must meet this rate or it will be shut down",
1779                 .parent = "rate_iops",
1780         },
1781         {
1782                 .name   = "ratecycle",
1783                 .type   = FIO_OPT_INT,
1784                 .off1   = td_var_offset(ratecycle),
1785                 .help   = "Window average for rate limits (msec)",
1786                 .def    = "1000",
1787                 .parent = "rate",
1788         },
1789         {
1790                 .name   = "invalidate",
1791                 .type   = FIO_OPT_BOOL,
1792                 .off1   = td_var_offset(invalidate_cache),
1793                 .help   = "Invalidate buffer/page cache prior to running job",
1794                 .def    = "1",
1795         },
1796         {
1797                 .name   = "sync",
1798                 .type   = FIO_OPT_BOOL,
1799                 .off1   = td_var_offset(sync_io),
1800                 .help   = "Use O_SYNC for buffered writes",
1801                 .def    = "0",
1802                 .parent = "buffered",
1803         },
1804         {
1805                 .name   = "bwavgtime",
1806                 .type   = FIO_OPT_INT,
1807                 .off1   = td_var_offset(bw_avg_time),
1808                 .help   = "Time window over which to calculate bandwidth"
1809                           " (msec)",
1810                 .def    = "500",
1811         },
1812         {
1813                 .name   = "create_serialize",
1814                 .type   = FIO_OPT_BOOL,
1815                 .off1   = td_var_offset(create_serialize),
1816                 .help   = "Serialize creating of job files",
1817                 .def    = "1",
1818         },
1819         {
1820                 .name   = "create_fsync",
1821                 .type   = FIO_OPT_BOOL,
1822                 .off1   = td_var_offset(create_fsync),
1823                 .help   = "fsync file after creation",
1824                 .def    = "1",
1825         },
1826         {
1827                 .name   = "create_on_open",
1828                 .type   = FIO_OPT_BOOL,
1829                 .off1   = td_var_offset(create_on_open),
1830                 .help   = "Create files when they are opened for IO",
1831                 .def    = "0",
1832         },
1833         {
1834                 .name   = "pre_read",
1835                 .type   = FIO_OPT_BOOL,
1836                 .off1   = td_var_offset(pre_read),
1837                 .help   = "Pre-read files before starting official testing",
1838                 .def    = "0",
1839         },
1840         {
1841                 .name   = "cpuload",
1842                 .type   = FIO_OPT_INT,
1843                 .off1   = td_var_offset(cpuload),
1844                 .help   = "Use this percentage of CPU",
1845         },
1846         {
1847                 .name   = "cpuchunks",
1848                 .type   = FIO_OPT_INT,
1849                 .off1   = td_var_offset(cpucycle),
1850                 .help   = "Length of the CPU burn cycles (usecs)",
1851                 .def    = "50000",
1852                 .parent = "cpuload",
1853         },
1854 #ifdef FIO_HAVE_CPU_AFFINITY
1855         {
1856                 .name   = "cpumask",
1857                 .type   = FIO_OPT_INT,
1858                 .cb     = str_cpumask_cb,
1859                 .help   = "CPU affinity mask",
1860         },
1861         {
1862                 .name   = "cpus_allowed",
1863                 .type   = FIO_OPT_STR,
1864                 .cb     = str_cpus_allowed_cb,
1865                 .help   = "Set CPUs allowed",
1866         },
1867 #endif
1868         {
1869                 .name   = "end_fsync",
1870                 .type   = FIO_OPT_BOOL,
1871                 .off1   = td_var_offset(end_fsync),
1872                 .help   = "Include fsync at the end of job",
1873                 .def    = "0",
1874         },
1875         {
1876                 .name   = "fsync_on_close",
1877                 .type   = FIO_OPT_BOOL,
1878                 .off1   = td_var_offset(fsync_on_close),
1879                 .help   = "fsync files on close",
1880                 .def    = "0",
1881         },
1882         {
1883                 .name   = "unlink",
1884                 .type   = FIO_OPT_BOOL,
1885                 .off1   = td_var_offset(unlink),
1886                 .help   = "Unlink created files after job has completed",
1887                 .def    = "0",
1888         },
1889         {
1890                 .name   = "exitall",
1891                 .type   = FIO_OPT_STR_SET,
1892                 .cb     = str_exitall_cb,
1893                 .help   = "Terminate all jobs when one exits",
1894         },
1895         {
1896                 .name   = "stonewall",
1897                 .alias  = "wait_for_previous",
1898                 .type   = FIO_OPT_STR_SET,
1899                 .off1   = td_var_offset(stonewall),
1900                 .help   = "Insert a hard barrier between this job and previous",
1901         },
1902         {
1903                 .name   = "new_group",
1904                 .type   = FIO_OPT_STR_SET,
1905                 .off1   = td_var_offset(new_group),
1906                 .help   = "Mark the start of a new group (for reporting)",
1907         },
1908         {
1909                 .name   = "thread",
1910                 .type   = FIO_OPT_STR_SET,
1911                 .off1   = td_var_offset(use_thread),
1912                 .help   = "Use threads instead of forks",
1913         },
1914         {
1915                 .name   = "write_bw_log",
1916                 .type   = FIO_OPT_STR,
1917                 .off1   = td_var_offset(write_bw_log),
1918                 .cb     = str_write_bw_log_cb,
1919                 .help   = "Write log of bandwidth during run",
1920         },
1921         {
1922                 .name   = "write_lat_log",
1923                 .type   = FIO_OPT_STR,
1924                 .off1   = td_var_offset(write_lat_log),
1925                 .cb     = str_write_lat_log_cb,
1926                 .help   = "Write log of latency during run",
1927         },
1928         {
1929                 .name   = "hugepage-size",
1930                 .type   = FIO_OPT_INT,
1931                 .off1   = td_var_offset(hugepage_size),
1932                 .help   = "When using hugepages, specify size of each page",
1933                 .def    = __stringify(FIO_HUGE_PAGE),
1934         },
1935         {
1936                 .name   = "group_reporting",
1937                 .type   = FIO_OPT_STR_SET,
1938                 .off1   = td_var_offset(group_reporting),
1939                 .help   = "Do reporting on a per-group basis",
1940         },
1941         {
1942                 .name   = "zero_buffers",
1943                 .type   = FIO_OPT_STR_SET,
1944                 .off1   = td_var_offset(zero_buffers),
1945                 .help   = "Init IO buffers to all zeroes",
1946         },
1947         {
1948                 .name   = "refill_buffers",
1949                 .type   = FIO_OPT_STR_SET,
1950                 .off1   = td_var_offset(refill_buffers),
1951                 .help   = "Refill IO buffers on every IO submit",
1952         },
1953         {
1954                 .name   = "clat_percentiles",
1955                 .type   = FIO_OPT_BOOL,
1956                 .off1   = td_var_offset(clat_percentiles),
1957                 .help   = "Enable the reporting of completion latency percentiles",
1958                 .def    = "0",
1959         },
1960         {
1961                 .name   = "percentile_list",
1962                 .type   = FIO_OPT_FLOAT_LIST,
1963                 .off1   = td_var_offset(percentile_list),
1964                 .off2   = td_var_offset(overwrite_plist),
1965                 .help   = "Specify a custom list of percentiles to report",
1966                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
1967                 .minfp  = 0.0,
1968                 .maxfp  = 100.0,
1969         },
1970
1971 #ifdef FIO_HAVE_DISK_UTIL
1972         {
1973                 .name   = "disk_util",
1974                 .type   = FIO_OPT_BOOL,
1975                 .off1   = td_var_offset(do_disk_util),
1976                 .help   = "Log disk utilization statistics",
1977                 .def    = "1",
1978         },
1979 #endif
1980         {
1981                 .name   = "gtod_reduce",
1982                 .type   = FIO_OPT_BOOL,
1983                 .help   = "Greatly reduce number of gettimeofday() calls",
1984                 .cb     = str_gtod_reduce_cb,
1985                 .def    = "0",
1986         },
1987         {
1988                 .name   = "disable_lat",
1989                 .type   = FIO_OPT_BOOL,
1990                 .off1   = td_var_offset(disable_lat),
1991                 .help   = "Disable latency numbers",
1992                 .parent = "gtod_reduce",
1993                 .def    = "0",
1994         },
1995         {
1996                 .name   = "disable_clat",
1997                 .type   = FIO_OPT_BOOL,
1998                 .off1   = td_var_offset(disable_clat),
1999                 .help   = "Disable completion latency numbers",
2000                 .parent = "gtod_reduce",
2001                 .def    = "0",
2002         },
2003         {
2004                 .name   = "disable_slat",
2005                 .type   = FIO_OPT_BOOL,
2006                 .off1   = td_var_offset(disable_slat),
2007                 .help   = "Disable submission latency numbers",
2008                 .parent = "gtod_reduce",
2009                 .def    = "0",
2010         },
2011         {
2012                 .name   = "disable_bw_measurement",
2013                 .type   = FIO_OPT_BOOL,
2014                 .off1   = td_var_offset(disable_bw),
2015                 .help   = "Disable bandwidth logging",
2016                 .parent = "gtod_reduce",
2017                 .def    = "0",
2018         },
2019         {
2020                 .name   = "gtod_cpu",
2021                 .type   = FIO_OPT_INT,
2022                 .cb     = str_gtod_cpu_cb,
2023                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2024                 .verify = gtod_cpu_verify,
2025         },
2026         {
2027                 .name   = "continue_on_error",
2028                 .type   = FIO_OPT_BOOL,
2029                 .off1   = td_var_offset(continue_on_error),
2030                 .help   = "Continue on non-fatal errors during IO",
2031                 .def    = "0",
2032         },
2033         {
2034                 .name   = "profile",
2035                 .type   = FIO_OPT_STR_STORE,
2036                 .off1   = td_var_offset(profile),
2037                 .help   = "Select a specific builtin performance test",
2038         },
2039         {
2040                 .name   = "cgroup",
2041                 .type   = FIO_OPT_STR_STORE,
2042                 .off1   = td_var_offset(cgroup),
2043                 .help   = "Add job to cgroup of this name",
2044         },
2045         {
2046                 .name   = "cgroup_weight",
2047                 .type   = FIO_OPT_INT,
2048                 .off1   = td_var_offset(cgroup_weight),
2049                 .help   = "Use given weight for cgroup",
2050                 .minval = 100,
2051                 .maxval = 1000,
2052         },
2053         {
2054                 .name   = "cgroup_nodelete",
2055                 .type   = FIO_OPT_BOOL,
2056                 .off1   = td_var_offset(cgroup_nodelete),
2057                 .help   = "Do not delete cgroups after job completion",
2058                 .def    = "0",
2059         },
2060         {
2061                 .name   = "uid",
2062                 .type   = FIO_OPT_INT,
2063                 .off1   = td_var_offset(uid),
2064                 .help   = "Run job with this user ID",
2065         },
2066         {
2067                 .name   = "gid",
2068                 .type   = FIO_OPT_INT,
2069                 .off1   = td_var_offset(gid),
2070                 .help   = "Run job with this group ID",
2071         },
2072         {
2073                 .name = NULL,
2074         },
2075 };
2076
2077 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2078                         const char *name)
2079 {
2080         lopt->name = (char *) name;
2081         lopt->val = FIO_GETOPT_JOB;
2082         if (o->type == FIO_OPT_STR_SET)
2083                 lopt->has_arg = no_argument;
2084         else
2085                 lopt->has_arg = required_argument;
2086 }
2087
2088 void fio_options_dup_and_init(struct option *long_options)
2089 {
2090         struct fio_option *o;
2091         unsigned int i;
2092
2093         options_init(options);
2094
2095         i = 0;
2096         while (long_options[i].name)
2097                 i++;
2098
2099         o = &options[0];
2100         while (o->name) {
2101                 add_to_lopt(&long_options[i], o, o->name);
2102                 if (o->alias) {
2103                         i++;
2104                         add_to_lopt(&long_options[i], o, o->alias);
2105                 }
2106
2107                 i++;
2108                 o++;
2109                 assert(i < FIO_NR_OPTIONS);
2110         }
2111 }
2112
2113 struct fio_keyword {
2114         const char *word;
2115         const char *desc;
2116         char *replace;
2117 };
2118
2119 static struct fio_keyword fio_keywords[] = {
2120         {
2121                 .word   = "$pagesize",
2122                 .desc   = "Page size in the system",
2123         },
2124         {
2125                 .word   = "$mb_memory",
2126                 .desc   = "Megabytes of memory online",
2127         },
2128         {
2129                 .word   = "$ncpus",
2130                 .desc   = "Number of CPUs online in the system",
2131         },
2132         {
2133                 .word   = NULL,
2134         },
2135 };
2136
2137 void fio_keywords_init(void)
2138 {
2139         unsigned long long mb_memory;
2140         char buf[128];
2141         long l;
2142
2143         sprintf(buf, "%lu", page_size);
2144         fio_keywords[0].replace = strdup(buf);
2145
2146         mb_memory = os_phys_mem() / (1024 * 1024);
2147         sprintf(buf, "%llu", mb_memory);
2148         fio_keywords[1].replace = strdup(buf);
2149
2150         l = cpus_online();
2151         sprintf(buf, "%lu", l);
2152         fio_keywords[2].replace = strdup(buf);
2153 }
2154
2155 #define BC_APP          "bc"
2156
2157 static char *bc_calc(char *str)
2158 {
2159         char *buf, *tmp, opt[80];
2160         FILE *f;
2161         int ret;
2162
2163         /*
2164          * No math, just return string
2165          */
2166         if (!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2167             !strchr(str, '/'))
2168                 return str;
2169
2170         /*
2171          * Split option from value, we only need to calculate the value
2172          */
2173         tmp = strchr(str, '=');
2174         if (!tmp)
2175                 return str;
2176
2177         tmp++;
2178         memset(opt, 0, sizeof(opt));
2179         strncpy(opt, str, tmp - str);
2180
2181         buf = malloc(128);
2182
2183         sprintf(buf, "which %s > /dev/null", BC_APP);
2184         if (system(buf)) {
2185                 log_err("fio: bc is needed for performing math\n");
2186                 free(buf);
2187                 return NULL;
2188         }
2189
2190         sprintf(buf, "echo %s | %s", tmp, BC_APP);
2191         f = popen(buf, "r");
2192         if (!f) {
2193                 free(buf);
2194                 return NULL;
2195         }
2196
2197         ret = fread(buf, 1, 128, f);
2198         if (ret <= 0) {
2199                 free(buf);
2200                 return NULL;
2201         }
2202
2203         buf[ret - 1] = '\0';
2204         strcat(opt, buf);
2205         strcpy(buf, opt);
2206         pclose(f);
2207         free(str);
2208         return buf;
2209 }
2210
2211 /*
2212  * Look for reserved variable names and replace them with real values
2213  */
2214 static char *fio_keyword_replace(char *opt)
2215 {
2216         char *s;
2217         int i;
2218
2219         for (i = 0; fio_keywords[i].word != NULL; i++) {
2220                 struct fio_keyword *kw = &fio_keywords[i];
2221
2222                 while ((s = strstr(opt, kw->word)) != NULL) {
2223                         char *new = malloc(strlen(opt) + 1);
2224                         char *o_org = opt;
2225                         int olen = s - opt;
2226                         int len;
2227
2228                         /*
2229                          * Copy part of the string before the keyword and
2230                          * sprintf() the replacement after it.
2231                          */
2232                         memcpy(new, opt, olen);
2233                         len = sprintf(new + olen, "%s", kw->replace);
2234
2235                         /*
2236                          * If there's more in the original string, copy that
2237                          * in too
2238                          */
2239                         opt += strlen(kw->word) + olen;
2240                         if (strlen(opt))
2241                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2242
2243                         /*
2244                          * replace opt and free the old opt
2245                          */
2246                         opt = new;
2247                         //free(o_org);
2248
2249                         /*
2250                          * Check for potential math and invoke bc, if possible
2251                          */
2252                         opt = bc_calc(opt);
2253                 }
2254         }
2255
2256         return opt;
2257 }
2258
2259 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2260 {
2261         int i, ret;
2262
2263         sort_options(opts, options, num_opts);
2264
2265         for (ret = 0, i = 0; i < num_opts; i++) {
2266                 opts[i] = fio_keyword_replace(opts[i]);
2267                 ret |= parse_option(opts[i], options, td);
2268         }
2269
2270         return ret;
2271 }
2272
2273 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2274 {
2275         return parse_cmd_option(opt, val, options, td);
2276 }
2277
2278 void fio_fill_default_options(struct thread_data *td)
2279 {
2280         fill_default_options(td, options);
2281 }
2282
2283 int fio_show_option_help(const char *opt)
2284 {
2285         return show_cmd_help(options, opt);
2286 }
2287
2288 static void __options_mem(struct thread_data *td, int alloc)
2289 {
2290         struct thread_options *o = &td->o;
2291         struct fio_option *opt;
2292         char **ptr;
2293         int i;
2294
2295         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
2296                 if (opt->type != FIO_OPT_STR_STORE)
2297                         continue;
2298
2299                 ptr = (void *) o + opt->off1;
2300                 if (*ptr) {
2301                         if (alloc)
2302                                 *ptr = strdup(*ptr);
2303                         else {
2304                                 free(*ptr);
2305                                 *ptr = NULL;
2306                         }
2307                 }
2308         }
2309 }
2310
2311 /*
2312  * dupe FIO_OPT_STR_STORE options
2313  */
2314 void options_mem_dupe(struct thread_data *td)
2315 {
2316         __options_mem(td, 1);
2317 }
2318
2319 void options_mem_free(struct thread_data fio_unused *td)
2320 {
2321 #if 0
2322         __options_mem(td, 0);
2323 #endif
2324 }
2325
2326 unsigned int fio_get_kb_base(void *data)
2327 {
2328         struct thread_data *td = data;
2329         unsigned int kb_base = 0;
2330
2331         if (td)
2332                 kb_base = td->o.kb_base;
2333         if (!kb_base)
2334                 kb_base = 1024;
2335
2336         return kb_base;
2337 }
2338
2339 int add_option(struct fio_option *o)
2340 {
2341         struct fio_option *__o;
2342         int opt_index = 0;
2343
2344         __o = options;
2345         while (__o->name) {
2346                 opt_index++;
2347                 __o++;
2348         }
2349
2350         memcpy(&options[opt_index], o, sizeof(*o));
2351         return 0;
2352 }
2353
2354 void invalidate_profile_options(const char *prof_name)
2355 {
2356         struct fio_option *o;
2357
2358         o = options;
2359         while (o->name) {
2360                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
2361                         o->type = FIO_OPT_INVALID;
2362                         o->prof_name = NULL;
2363                 }
2364                 o++;
2365         }
2366 }
2367
2368 void add_opt_posval(const char *optname, const char *ival, const char *help)
2369 {
2370         struct fio_option *o;
2371         unsigned int i;
2372
2373         o = find_option(options, optname);
2374         if (!o)
2375                 return;
2376
2377         for (i = 0; i < PARSE_MAX_VP; i++) {
2378                 if (o->posval[i].ival)
2379                         continue;
2380
2381                 o->posval[i].ival = ival;
2382                 o->posval[i].help = help;
2383                 break;
2384         }
2385 }
2386
2387 void del_opt_posval(const char *optname, const char *ival)
2388 {
2389         struct fio_option *o;
2390         unsigned int i;
2391
2392         o = find_option(options, optname);
2393         if (!o)
2394                 return;
2395
2396         for (i = 0; i < PARSE_MAX_VP; i++) {
2397                 if (!o->posval[i].ival)
2398                         continue;
2399                 if (strcmp(o->posval[i].ival, ival))
2400                         continue;
2401
2402                 o->posval[i].ival = NULL;
2403                 o->posval[i].help = NULL;
2404         }
2405 }