options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <getopt.h>
   7 #include <assert.h>
   8 #include <libgen.h>
   9 #include <fcntl.h>
  10 #include <sys/types.h>
  11 #include <sys/stat.h>
  12
  13 #include "fio.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16
  17 #define td_var_offset(var)      ((size_t) &((struct thread_options *)0)->var)
  18
  19 /*
  20  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  21  */
  22 static char *get_opt_postfix(const char *str)
  23 {
  24         char *p = strstr(str, ":");
  25
  26         if (!p)
  27                 return NULL;
  28
  29         p++;
  30         strip_blank_front(&p);
  31         strip_blank_end(p);
  32         return strdup(p);
  33 }
  34
  35 static int bs_cmp(const void *p1, const void *p2)
  36 {
  37         const struct bssplit *bsp1 = p1;
  38         const struct bssplit *bsp2 = p2;
  39
  40         return bsp1->perc < bsp2->perc;
  41 }
  42
  43 static int str_bssplit_cb(void *data, const char *input)
  44 {
  45         struct thread_data *td = data;
  46         char *fname, *str, *p;
  47         unsigned int i, perc, perc_missing;
  48         unsigned int max_bs, min_bs;
  49         long long val;
  50
  51         p = str = strdup(input);
  52
  53         strip_blank_front(&str);
  54         strip_blank_end(str);
  55
  56         td->o.bssplit_nr = 4;
  57         td->o.bssplit = malloc(4 * sizeof(struct bssplit));
  58
  59         i = 0;
  60         max_bs = 0;
  61         min_bs = -1;
  62         while ((fname = strsep(&str, ":")) != NULL) {
  63                 char *perc_str;
  64
  65                 if (!strlen(fname))
  66                         break;
  67
  68                 /*
  69                  * grow struct buffer, if needed
  70                  */
  71                 if (i == td->o.bssplit_nr) {
  72                         td->o.bssplit_nr <<= 1;
  73                         td->o.bssplit = realloc(td->o.bssplit,
  74                                                 td->o.bssplit_nr
  75                                                   * sizeof(struct bssplit));
  76                 }
  77
  78                 perc_str = strstr(fname, "/");
  79                 if (perc_str) {
  80                         *perc_str = '\0';
  81                         perc_str++;
  82                         perc = atoi(perc_str);
  83                         if (perc > 100)
  84                                 perc = 100;
  85                         else if (!perc)
  86                                 perc = -1;
  87                 } else
  88                         perc = -1;
  89
  90                 if (str_to_decimal(fname, &val, 1)) {
  91                         log_err("fio: bssplit conversion failed\n");
  92                         free(td->o.bssplit);
  93                         return 1;
  94                 }
  95
  96                 if (val > max_bs)
  97                         max_bs = val;
  98                 if (val < min_bs)
  99                         min_bs = val;
 100
 101                 td->o.bssplit[i].bs = val;
 102                 td->o.bssplit[i].perc = perc;
 103                 i++;
 104         }
 105
 106         td->o.bssplit_nr = i;
 107
 108         /*
 109          * Now check if the percentages add up, and how much is missing
 110          */
 111         perc = perc_missing = 0;
 112         for (i = 0; i < td->o.bssplit_nr; i++) {
 113                 struct bssplit *bsp = &td->o.bssplit[i];
 114
 115                 if (bsp->perc == (unsigned char) -1)
 116                         perc_missing++;
 117                 else
 118                         perc += bsp->perc;
 119         }
 120
 121         if (perc > 100) {
 122                 log_err("fio: bssplit percentages add to more than 100%%\n");
 123                 free(td->o.bssplit);
 124                 return 1;
 125         }
 126         /*
 127          * If values didn't have a percentage set, divide the remains between
 128          * them.
 129          */
 130         if (perc_missing) {
 131                 for (i = 0; i < td->o.bssplit_nr; i++) {
 132                         struct bssplit *bsp = &td->o.bssplit[i];
 133
 134                         if (bsp->perc == (unsigned char) -1)
 135                                 bsp->perc = (100 - perc) / perc_missing;
 136                 }
 137         }
 138
 139         td->o.min_bs[DDIR_READ] = td->o.min_bs[DDIR_WRITE] = min_bs;
 140         td->o.max_bs[DDIR_READ] = td->o.max_bs[DDIR_WRITE] = max_bs;
 141
 142         /*
 143          * now sort based on percentages, for ease of lookup
 144          */
 145         qsort(td->o.bssplit, td->o.bssplit_nr, sizeof(struct bssplit), bs_cmp);
 146
 147         free(p);
 148         return 0;
 149 }
 150
 151 static int str_rw_cb(void *data, const char *str)
 152 {
 153         struct thread_data *td = data;
 154         char *nr = get_opt_postfix(str);
 155
 156         td->o.ddir_nr = 1;
 157         if (nr) {
 158                 td->o.ddir_nr = atoi(nr);
 159                 free(nr);
 160         }
 161
 162         return 0;
 163 }
 164
 165 static int str_mem_cb(void *data, const char *mem)
 166 {
 167         struct thread_data *td = data;
 168
 169         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 170                 td->mmapfile = get_opt_postfix(mem);
 171                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 172                         log_err("fio: mmaphuge:/path/to/file\n");
 173                         return 1;
 174                 }
 175         }
 176
 177         return 0;
 178 }
 179
 180 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
 181 {
 182         mlock_size = *val;
 183         return 0;
 184 }
 185
 186 static int str_rwmix_read_cb(void *data, unsigned int *val)
 187 {
 188         struct thread_data *td = data;
 189
 190         td->o.rwmix[DDIR_READ] = *val;
 191         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 192         return 0;
 193 }
 194
 195 static int str_rwmix_write_cb(void *data, unsigned int *val)
 196 {
 197         struct thread_data *td = data;
 198
 199         td->o.rwmix[DDIR_WRITE] = *val;
 200         td->o.rwmix[DDIR_READ] = 100 - *val;
 201         return 0;
 202 }
 203
 204 #ifdef FIO_HAVE_IOPRIO
 205 static int str_prioclass_cb(void *data, unsigned int *val)
 206 {
 207         struct thread_data *td = data;
 208         unsigned short mask;
 209
 210         /*
 211          * mask off old class bits, str_prio_cb() may have set a default class
 212          */
 213         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 214         td->ioprio &= mask;
 215
 216         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 217         td->ioprio_set = 1;
 218         return 0;
 219 }
 220
 221 static int str_prio_cb(void *data, unsigned int *val)
 222 {
 223         struct thread_data *td = data;
 224
 225         td->ioprio |= *val;
 226
 227         /*
 228          * If no class is set, assume BE
 229          */
 230         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 231                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 232
 233         td->ioprio_set = 1;
 234         return 0;
 235 }
 236 #endif
 237
 238 static int str_exitall_cb(void)
 239 {
 240         exitall_on_terminate = 1;
 241         return 0;
 242 }
 243
 244 #ifdef FIO_HAVE_CPU_AFFINITY
 245 static int str_cpumask_cb(void *data, unsigned int *val)
 246 {
 247         struct thread_data *td = data;
 248         unsigned int i;
 249
 250         CPU_ZERO(&td->o.cpumask);
 251
 252         for (i = 0; i < sizeof(int) * 8; i++) {
 253                 if ((1 << i) & *val) {
 254                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 255                         CPU_SET(*val, &td->o.cpumask);
 256                 }
 257         }
 258
 259         td->o.cpumask_set = 1;
 260         return 0;
 261 }
 262
 263 static int str_cpus_allowed_cb(void *data, const char *input)
 264 {
 265         struct thread_data *td = data;
 266         char *cpu, *str, *p;
 267         int ret = 0;
 268
 269         CPU_ZERO(&td->o.cpumask);
 270
 271         p = str = strdup(input);
 272
 273         strip_blank_front(&str);
 274         strip_blank_end(str);
 275
 276         while ((cpu = strsep(&str, ",")) != NULL) {
 277                 char *str2, *cpu2;
 278                 int icpu, icpu2;
 279
 280                 if (!strlen(cpu))
 281                         break;
 282
 283                 str2 = cpu;
 284                 icpu2 = -1;
 285                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 286                         if (!strlen(cpu2))
 287                                 break;
 288
 289                         icpu2 = atoi(cpu2);
 290                 }
 291
 292                 icpu = atoi(cpu);
 293                 if (icpu2 == -1)
 294                         icpu2 = icpu;
 295                 while (icpu <= icpu2) {
 296                         if (icpu >= CPU_SETSIZE) {
 297                                 log_err("fio: your OS only supports up to"
 298                                         " %d CPUs\n", (int) CPU_SETSIZE);
 299                                 ret = 1;
 300                                 break;
 301                         }
 302
 303                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 304                         CPU_SET(atoi(cpu), &td->o.cpumask);
 305                         icpu++;
 306                 }
 307                 if (ret)
 308                         break;
 309         }
 310
 311         free(p);
 312         if (!ret)
 313                 td->o.cpumask_set = 1;
 314         return ret;
 315 }
 316 #endif
 317
 318 static int str_fst_cb(void *data, const char *str)
 319 {
 320         struct thread_data *td = data;
 321         char *nr = get_opt_postfix(str);
 322
 323         td->file_service_nr = 1;
 324         if (nr) {
 325                 td->file_service_nr = atoi(nr);
 326                 free(nr);
 327         }
 328
 329         return 0;
 330 }
 331
 332 static int check_dir(struct thread_data *td, char *fname)
 333 {
 334         char file[PATH_MAX], *dir;
 335         int elen = 0;
 336
 337         if (td->o.directory) {
 338                 strcpy(file, td->o.directory);
 339                 strcat(file, "/");
 340                 elen = strlen(file);
 341         }
 342
 343         sprintf(file + elen, "%s", fname);
 344         dir = dirname(file);
 345
 346 #if 0
 347         {
 348         struct stat sb;
 349         /*
 350          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 351          * yet, so we can't do this check right here...
 352          */
 353         if (lstat(dir, &sb) < 0) {
 354                 int ret = errno;
 355
 356                 log_err("fio: %s is not a directory\n", dir);
 357                 td_verror(td, ret, "lstat");
 358                 return 1;
 359         }
 360
 361         if (!S_ISDIR(sb.st_mode)) {
 362                 log_err("fio: %s is not a directory\n", dir);
 363                 return 1;
 364         }
 365         }
 366 #endif
 367
 368         return 0;
 369 }
 370
 371 static int str_filename_cb(void *data, const char *input)
 372 {
 373         struct thread_data *td = data;
 374         char *fname, *str, *p;
 375
 376         p = str = strdup(input);
 377
 378         strip_blank_front(&str);
 379         strip_blank_end(str);
 380
 381         if (!td->files_index)
 382                 td->o.nr_files = 0;
 383
 384         while ((fname = strsep(&str, ":")) != NULL) {
 385                 if (!strlen(fname))
 386                         break;
 387                 if (check_dir(td, fname)) {
 388                         free(p);
 389                         return 1;
 390                 }
 391                 add_file(td, fname);
 392                 td->o.nr_files++;
 393         }
 394
 395         free(p);
 396         return 0;
 397 }
 398
 399 static int str_directory_cb(void *data, const char fio_unused *str)
 400 {
 401         struct thread_data *td = data;
 402         struct stat sb;
 403
 404         if (lstat(td->o.directory, &sb) < 0) {
 405                 int ret = errno;
 406
 407                 log_err("fio: %s is not a directory\n", td->o.directory);
 408                 td_verror(td, ret, "lstat");
 409                 return 1;
 410         }
 411         if (!S_ISDIR(sb.st_mode)) {
 412                 log_err("fio: %s is not a directory\n", td->o.directory);
 413                 return 1;
 414         }
 415
 416         return 0;
 417 }
 418
 419 static int str_opendir_cb(void *data, const char fio_unused *str)
 420 {
 421         struct thread_data *td = data;
 422
 423         if (!td->files_index)
 424                 td->o.nr_files = 0;
 425
 426         return add_dir_files(td, td->o.opendir);
 427 }
 428
 429 static int str_verify_offset_cb(void *data, unsigned int *off)
 430 {
 431         struct thread_data *td = data;
 432
 433         if (*off && *off < sizeof(struct verify_header)) {
 434                 log_err("fio: verify_offset too small\n");
 435                 return 1;
 436         }
 437
 438         td->o.verify_offset = *off;
 439         return 0;
 440 }
 441
 442 static int str_verify_pattern_cb(void *data, unsigned int *off)
 443 {
 444         struct thread_data *td = data;
 445         unsigned int msb;
 446
 447         msb = __fls(*off);
 448         if (msb <= 8)
 449                 td->o.verify_pattern_bytes = 1;
 450         else if (msb <= 16)
 451                 td->o.verify_pattern_bytes = 2;
 452         else if (msb <= 24)
 453                 td->o.verify_pattern_bytes = 3;
 454         else
 455                 td->o.verify_pattern_bytes = 4;
 456
 457         td->o.verify_pattern = *off;
 458         return 0;
 459 }
 460
 461 static int str_lockfile_cb(void *data, const char *str)
 462 {
 463         struct thread_data *td = data;
 464         char *nr = get_opt_postfix(str);
 465
 466         td->o.lockfile_batch = 1;
 467         if (nr) {
 468                 td->o.lockfile_batch = atoi(nr);
 469                 free(nr);
 470         }
 471
 472         return 0;
 473 }
 474
 475 static int str_write_bw_log_cb(void *data, const char *str)
 476 {
 477         struct thread_data *td = data;
 478
 479         if (str)
 480                 td->o.bw_log_file = strdup(str);
 481
 482         td->o.write_bw_log = 1;
 483         return 0;
 484 }
 485
 486 static int str_write_lat_log_cb(void *data, const char *str)
 487 {
 488         struct thread_data *td = data;
 489
 490         if (str)
 491                 td->o.lat_log_file = strdup(str);
 492
 493         td->o.write_lat_log = 1;
 494         return 0;
 495 }
 496
 497 static int str_gtod_reduce_cb(void *data, int *il)
 498 {
 499         struct thread_data *td = data;
 500         int val = *il;
 501
 502         td->o.disable_clat = !!val;
 503         td->o.disable_slat = !!val;
 504         td->o.disable_bw = !!val;
 505         if (val)
 506                 td->tv_cache_mask = 63;
 507
 508         return 0;
 509 }
 510
 511 static int str_gtod_cpu_cb(void *data, int *il)
 512 {
 513         struct thread_data *td = data;
 514         int val = *il;
 515
 516         td->o.gtod_cpu = val;
 517         td->o.gtod_offload = 1;
 518         return 0;
 519 }
 520
 521 #define __stringify_1(x)        #x
 522 #define __stringify(x)          __stringify_1(x)
 523
 524 /*
 525  * Map of job/command line options
 526  */
 527 static struct fio_option options[] = {
 528         {
 529                 .name   = "description",
 530                 .type   = FIO_OPT_STR_STORE,
 531                 .off1   = td_var_offset(description),
 532                 .help   = "Text job description",
 533         },
 534         {
 535                 .name   = "name",
 536                 .type   = FIO_OPT_STR_STORE,
 537                 .off1   = td_var_offset(name),
 538                 .help   = "Name of this job",
 539         },
 540         {
 541                 .name   = "directory",
 542                 .type   = FIO_OPT_STR_STORE,
 543                 .off1   = td_var_offset(directory),
 544                 .cb     = str_directory_cb,
 545                 .help   = "Directory to store files in",
 546         },
 547         {
 548                 .name   = "filename",
 549                 .type   = FIO_OPT_STR_STORE,
 550                 .off1   = td_var_offset(filename),
 551                 .cb     = str_filename_cb,
 552                 .prio   = 1, /* must come before "directory" */
 553                 .help   = "File(s) to use for the workload",
 554         },
 555         {
 556                 .name   = "lockfile",
 557                 .type   = FIO_OPT_STR,
 558                 .cb     = str_lockfile_cb,
 559                 .off1   = td_var_offset(file_lock_mode),
 560                 .help   = "Lock file when doing IO to it",
 561                 .parent = "filename",
 562                 .def    = "none",
 563                 .posval = {
 564                           { .ival = "none",
 565                             .oval = FILE_LOCK_NONE,
 566                             .help = "No file locking",
 567                           },
 568                           { .ival = "exclusive",
 569                             .oval = FILE_LOCK_EXCLUSIVE,
 570                             .help = "Exclusive file lock",
 571                           },
 572                           {
 573                             .ival = "readwrite",
 574                             .oval = FILE_LOCK_READWRITE,
 575                             .help = "Read vs write lock",
 576                           },
 577                 },
 578         },
 579         {
 580                 .name   = "opendir",
 581                 .type   = FIO_OPT_STR_STORE,
 582                 .off1   = td_var_offset(opendir),
 583                 .cb     = str_opendir_cb,
 584                 .help   = "Recursively add files from this directory and down",
 585         },
 586         {
 587                 .name   = "rw",
 588                 .alias  = "readwrite",
 589                 .type   = FIO_OPT_STR,
 590                 .cb     = str_rw_cb,
 591                 .off1   = td_var_offset(td_ddir),
 592                 .help   = "IO direction",
 593                 .def    = "read",
 594                 .posval = {
 595                           { .ival = "read",
 596                             .oval = TD_DDIR_READ,
 597                             .help = "Sequential read",
 598                           },
 599                           { .ival = "write",
 600                             .oval = TD_DDIR_WRITE,
 601                             .help = "Sequential write",
 602                           },
 603                           { .ival = "randread",
 604                             .oval = TD_DDIR_RANDREAD,
 605                             .help = "Random read",
 606                           },
 607                           { .ival = "randwrite",
 608                             .oval = TD_DDIR_RANDWRITE,
 609                             .help = "Random write",
 610                           },
 611                           { .ival = "rw",
 612                             .oval = TD_DDIR_RW,
 613                             .help = "Sequential read and write mix",
 614                           },
 615                           { .ival = "randrw",
 616                             .oval = TD_DDIR_RANDRW,
 617                             .help = "Random read and write mix"
 618                           },
 619                 },
 620         },
 621         {
 622                 .name   = "ioengine",
 623                 .type   = FIO_OPT_STR_STORE,
 624                 .off1   = td_var_offset(ioengine),
 625                 .help   = "IO engine to use",
 626                 .def    = "sync",
 627                 .posval = {
 628                           { .ival = "sync",
 629                             .help = "Use read/write",
 630                           },
 631                           { .ival = "psync",
 632                             .help = "Use pread/pwrite",
 633                           },
 634                           { .ival = "vsync",
 635                              .help = "Use readv/writev",
 636                           },
 637 #ifdef FIO_HAVE_LIBAIO
 638                           { .ival = "libaio",
 639                             .help = "Linux native asynchronous IO",
 640                           },
 641 #endif
 642 #ifdef FIO_HAVE_POSIXAIO
 643                           { .ival = "posixaio",
 644                             .help = "POSIX asynchronous IO",
 645                           },
 646 #endif
 647 #ifdef FIO_HAVE_SOLARISAIO
 648                           { .ival = "solarisaio",
 649                             .help = "Solaris native asynchronous IO",
 650                           },
 651 #endif
 652                           { .ival = "mmap",
 653                             .help = "Memory mapped IO",
 654                           },
 655 #ifdef FIO_HAVE_SPLICE
 656                           { .ival = "splice",
 657                             .help = "splice/vmsplice based IO",
 658                           },
 659                           { .ival = "netsplice",
 660                             .help = "splice/vmsplice to/from the network",
 661                           },
 662 #endif
 663 #ifdef FIO_HAVE_SGIO
 664                           { .ival = "sg",
 665                             .help = "SCSI generic v3 IO",
 666                           },
 667 #endif
 668                           { .ival = "null",
 669                             .help = "Testing engine (no data transfer)",
 670                           },
 671                           { .ival = "net",
 672                             .help = "Network IO",
 673                           },
 674 #ifdef FIO_HAVE_SYSLET
 675                           { .ival = "syslet-rw",
 676                             .help = "syslet enabled async pread/pwrite IO",
 677                           },
 678 #endif
 679                           { .ival = "cpuio",
 680                             .help = "CPU cycler burner engine",
 681                           },
 682 #ifdef FIO_HAVE_GUASI
 683                           { .ival = "guasi",
 684                             .help = "GUASI IO engine",
 685                           },
 686 #endif
 687                           { .ival = "external",
 688                             .help = "Load external engine (append name)",
 689                           },
 690                 },
 691         },
 692         {
 693                 .name   = "iodepth",
 694                 .type   = FIO_OPT_INT,
 695                 .off1   = td_var_offset(iodepth),
 696                 .help   = "Amount of IO buffers to keep in flight",
 697                 .minval = 1,
 698                 .def    = "1",
 699         },
 700         {
 701                 .name   = "iodepth_batch",
 702                 .alias  = "iodepth_batch_submit",
 703                 .type   = FIO_OPT_INT,
 704                 .off1   = td_var_offset(iodepth_batch),
 705                 .help   = "Number of IO to submit in one go",
 706                 .parent = "iodepth",
 707                 .minval = 1,
 708                 .def    = "1",
 709         },
 710         {
 711                 .name   = "iodepth_batch_complete",
 712                 .type   = FIO_OPT_INT,
 713                 .off1   = td_var_offset(iodepth_batch_complete),
 714                 .help   = "Number of IO to retrieve in one go",
 715                 .parent = "iodepth",
 716                 .minval = 0,
 717                 .def    = "1",
 718         },
 719         {
 720                 .name   = "iodepth_low",
 721                 .type   = FIO_OPT_INT,
 722                 .off1   = td_var_offset(iodepth_low),
 723                 .help   = "Low water mark for queuing depth",
 724                 .parent = "iodepth",
 725         },
 726         {
 727                 .name   = "size",
 728                 .type   = FIO_OPT_STR_VAL,
 729                 .off1   = td_var_offset(size),
 730                 .minval = 1,
 731                 .help   = "Total size of device or files",
 732         },
 733         {
 734                 .name   = "fill_device",
 735                 .type   = FIO_OPT_BOOL,
 736                 .off1   = td_var_offset(fill_device),
 737                 .help   = "Write until an ENOSPC error occurs",
 738                 .def    = "0",
 739         },
 740         {
 741                 .name   = "filesize",
 742                 .type   = FIO_OPT_STR_VAL,
 743                 .off1   = td_var_offset(file_size_low),
 744                 .off2   = td_var_offset(file_size_high),
 745                 .minval = 1,
 746                 .help   = "Size of individual files",
 747         },
 748         {
 749                 .name   = "offset",
 750                 .alias  = "fileoffset",
 751                 .type   = FIO_OPT_STR_VAL,
 752                 .off1   = td_var_offset(start_offset),
 753                 .help   = "Start IO from this offset",
 754                 .def    = "0",
 755         },
 756         {
 757                 .name   = "bs",
 758                 .alias  = "blocksize",
 759                 .type   = FIO_OPT_STR_VAL_INT,
 760                 .off1   = td_var_offset(bs[DDIR_READ]),
 761                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 762                 .minval = 1,
 763                 .help   = "Block size unit",
 764                 .def    = "4k",
 765                 .parent = "rw",
 766         },
 767         {
 768                 .name   = "bsrange",
 769                 .alias  = "blocksize_range",
 770                 .type   = FIO_OPT_RANGE,
 771                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 772                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 773                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 774                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 775                 .minval = 1,
 776                 .help   = "Set block size range (in more detail than bs)",
 777                 .parent = "rw",
 778         },
 779         {
 780                 .name   = "bssplit",
 781                 .type   = FIO_OPT_STR,
 782                 .cb     = str_bssplit_cb,
 783                 .help   = "Set a specific mix of block sizes",
 784                 .parent = "rw",
 785         },
 786         {
 787                 .name   = "bs_unaligned",
 788                 .alias  = "blocksize_unaligned",
 789                 .type   = FIO_OPT_STR_SET,
 790                 .off1   = td_var_offset(bs_unaligned),
 791                 .help   = "Don't sector align IO buffer sizes",
 792                 .parent = "rw",
 793         },
 794         {
 795                 .name   = "randrepeat",
 796                 .type   = FIO_OPT_BOOL,
 797                 .off1   = td_var_offset(rand_repeatable),
 798                 .help   = "Use repeatable random IO pattern",
 799                 .def    = "1",
 800                 .parent = "rw",
 801         },
 802         {
 803                 .name   = "norandommap",
 804                 .type   = FIO_OPT_STR_SET,
 805                 .off1   = td_var_offset(norandommap),
 806                 .help   = "Accept potential duplicate random blocks",
 807                 .parent = "rw",
 808         },
 809         {
 810                 .name   = "softrandommap",
 811                 .type   = FIO_OPT_BOOL,
 812                 .off1   = td_var_offset(softrandommap),
 813                 .help   = "Set norandommap if randommap allocation fails",
 814                 .parent = "norandommap",
 815                 .def    = "0",
 816         },
 817         {
 818                 .name   = "nrfiles",
 819                 .type   = FIO_OPT_INT,
 820                 .off1   = td_var_offset(nr_files),
 821                 .help   = "Split job workload between this number of files",
 822                 .def    = "1",
 823         },
 824         {
 825                 .name   = "openfiles",
 826                 .type   = FIO_OPT_INT,
 827                 .off1   = td_var_offset(open_files),
 828                 .help   = "Number of files to keep open at the same time",
 829         },
 830         {
 831                 .name   = "file_service_type",
 832                 .type   = FIO_OPT_STR,
 833                 .cb     = str_fst_cb,
 834                 .off1   = td_var_offset(file_service_type),
 835                 .help   = "How to select which file to service next",
 836                 .def    = "roundrobin",
 837                 .posval = {
 838                           { .ival = "random",
 839                             .oval = FIO_FSERVICE_RANDOM,
 840                             .help = "Choose a file at random",
 841                           },
 842                           { .ival = "roundrobin",
 843                             .oval = FIO_FSERVICE_RR,
 844                             .help = "Round robin select files",
 845                           },
 846                 },
 847                 .parent = "nrfiles",
 848         },
 849         {
 850                 .name   = "fadvise_hint",
 851                 .type   = FIO_OPT_BOOL,
 852                 .off1   = td_var_offset(fadvise_hint),
 853                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 854                 .def    = "1",
 855         },
 856         {
 857                 .name   = "fsync",
 858                 .type   = FIO_OPT_INT,
 859                 .off1   = td_var_offset(fsync_blocks),
 860                 .help   = "Issue fsync for writes every given number of blocks",
 861                 .def    = "0",
 862         },
 863         {
 864                 .name   = "direct",
 865                 .type   = FIO_OPT_BOOL,
 866                 .off1   = td_var_offset(odirect),
 867                 .help   = "Use O_DIRECT IO (negates buffered)",
 868                 .def    = "0",
 869         },
 870         {
 871                 .name   = "buffered",
 872                 .type   = FIO_OPT_BOOL,
 873                 .off1   = td_var_offset(odirect),
 874                 .neg    = 1,
 875                 .help   = "Use buffered IO (negates direct)",
 876                 .def    = "1",
 877         },
 878         {
 879                 .name   = "overwrite",
 880                 .type   = FIO_OPT_BOOL,
 881                 .off1   = td_var_offset(overwrite),
 882                 .help   = "When writing, set whether to overwrite current data",
 883                 .def    = "0",
 884         },
 885         {
 886                 .name   = "loops",
 887                 .type   = FIO_OPT_INT,
 888                 .off1   = td_var_offset(loops),
 889                 .help   = "Number of times to run the job",
 890                 .def    = "1",
 891         },
 892         {
 893                 .name   = "numjobs",
 894                 .type   = FIO_OPT_INT,
 895                 .off1   = td_var_offset(numjobs),
 896                 .help   = "Duplicate this job this many times",
 897                 .def    = "1",
 898         },
 899         {
 900                 .name   = "startdelay",
 901                 .type   = FIO_OPT_INT,
 902                 .off1   = td_var_offset(start_delay),
 903                 .help   = "Only start job when this period has passed",
 904                 .def    = "0",
 905         },
 906         {
 907                 .name   = "runtime",
 908                 .alias  = "timeout",
 909                 .type   = FIO_OPT_STR_VAL_TIME,
 910                 .off1   = td_var_offset(timeout),
 911                 .help   = "Stop workload when this amount of time has passed",
 912                 .def    = "0",
 913         },
 914         {
 915                 .name   = "time_based",
 916                 .type   = FIO_OPT_STR_SET,
 917                 .off1   = td_var_offset(time_based),
 918                 .help   = "Keep running until runtime/timeout is met",
 919         },
 920         {
 921                 .name   = "ramp_time",
 922                 .type   = FIO_OPT_STR_VAL_TIME,
 923                 .off1   = td_var_offset(ramp_time),
 924                 .help   = "Ramp up time before measuring performance",
 925         },
 926         {
 927                 .name   = "mem",
 928                 .alias  = "iomem",
 929                 .type   = FIO_OPT_STR,
 930                 .cb     = str_mem_cb,
 931                 .off1   = td_var_offset(mem_type),
 932                 .help   = "Backing type for IO buffers",
 933                 .def    = "malloc",
 934                 .posval = {
 935                           { .ival = "malloc",
 936                             .oval = MEM_MALLOC,
 937                             .help = "Use malloc(3) for IO buffers",
 938                           },
 939                           { .ival = "shm",
 940                             .oval = MEM_SHM,
 941                             .help = "Use shared memory segments for IO buffers",
 942                           },
 943 #ifdef FIO_HAVE_HUGETLB
 944                           { .ival = "shmhuge",
 945                             .oval = MEM_SHMHUGE,
 946                             .help = "Like shm, but use huge pages",
 947                           },
 948 #endif
 949                           { .ival = "mmap",
 950                             .oval = MEM_MMAP,
 951                             .help = "Use mmap(2) (file or anon) for IO buffers",
 952                           },
 953 #ifdef FIO_HAVE_HUGETLB
 954                           { .ival = "mmaphuge",
 955                             .oval = MEM_MMAPHUGE,
 956                             .help = "Like mmap, but use huge pages",
 957                           },
 958 #endif
 959                   },
 960         },
 961         {
 962                 .name   = "verify",
 963                 .type   = FIO_OPT_STR,
 964                 .off1   = td_var_offset(verify),
 965                 .help   = "Verify data written",
 966                 .def    = "0",
 967                 .posval = {
 968                           { .ival = "0",
 969                             .oval = VERIFY_NONE,
 970                             .help = "Don't do IO verification",
 971                           },
 972                           { .ival = "md5",
 973                             .oval = VERIFY_MD5,
 974                             .help = "Use md5 checksums for verification",
 975                           },
 976                           { .ival = "crc64",
 977                             .oval = VERIFY_CRC64,
 978                             .help = "Use crc64 checksums for verification",
 979                           },
 980                           { .ival = "crc32",
 981                             .oval = VERIFY_CRC32,
 982                             .help = "Use crc32 checksums for verification",
 983                           },
 984                           { .ival = "crc32c-intel",
 985                             .oval = VERIFY_CRC32C_INTEL,
 986                             .help = "Use hw crc32c checksums for verification",
 987                           },
 988                           { .ival = "crc32c",
 989                             .oval = VERIFY_CRC32C,
 990                             .help = "Use crc32c checksums for verification",
 991                           },
 992                           { .ival = "crc16",
 993                             .oval = VERIFY_CRC16,
 994                             .help = "Use crc16 checksums for verification",
 995                           },
 996                           { .ival = "crc7",
 997                             .oval = VERIFY_CRC7,
 998                             .help = "Use crc7 checksums for verification",
 999                           },
1000                           { .ival = "sha256",
1001                             .oval = VERIFY_SHA256,
1002                             .help = "Use sha256 checksums for verification",
1003                           },
1004                           { .ival = "sha512",
1005                             .oval = VERIFY_SHA512,
1006                             .help = "Use sha512 checksums for verification",
1007                           },
1008                           { .ival = "meta",
1009                             .oval = VERIFY_META,
1010                             .help = "Use io information",
1011                           },
1012                           {
1013                             .ival = "null",
1014                             .oval = VERIFY_NULL,
1015                             .help = "Pretend to verify",
1016                           },
1017                 },
1018         },
1019         {
1020                 .name   = "do_verify",
1021                 .type   = FIO_OPT_BOOL,
1022                 .off1   = td_var_offset(do_verify),
1023                 .help   = "Run verification stage after write",
1024                 .def    = "1",
1025                 .parent = "verify",
1026         },
1027         {
1028                 .name   = "verifysort",
1029                 .type   = FIO_OPT_BOOL,
1030                 .off1   = td_var_offset(verifysort),
1031                 .help   = "Sort written verify blocks for read back",
1032                 .def    = "1",
1033                 .parent = "verify",
1034         },
1035         {
1036                 .name   = "verify_interval",
1037                 .type   = FIO_OPT_STR_VAL_INT,
1038                 .off1   = td_var_offset(verify_interval),
1039                 .minval = 2 * sizeof(struct verify_header),
1040                 .help   = "Store verify buffer header every N bytes",
1041                 .parent = "verify",
1042         },
1043         {
1044                 .name   = "verify_offset",
1045                 .type   = FIO_OPT_STR_VAL_INT,
1046                 .help   = "Offset verify header location by N bytes",
1047                 .def    = "0",
1048                 .cb     = str_verify_offset_cb,
1049                 .parent = "verify",
1050         },
1051         {
1052                 .name   = "verify_pattern",
1053                 .type   = FIO_OPT_INT,
1054                 .cb     = str_verify_pattern_cb,
1055                 .help   = "Fill pattern for IO buffers",
1056                 .parent = "verify",
1057         },
1058         {
1059                 .name   = "verify_fatal",
1060                 .type   = FIO_OPT_BOOL,
1061                 .off1   = td_var_offset(verify_fatal),
1062                 .def    = "0",
1063                 .help   = "Exit on a single verify failure, don't continue",
1064                 .parent = "verify",
1065         },
1066         {
1067                 .name   = "write_iolog",
1068                 .type   = FIO_OPT_STR_STORE,
1069                 .off1   = td_var_offset(write_iolog_file),
1070                 .help   = "Store IO pattern to file",
1071         },
1072         {
1073                 .name   = "read_iolog",
1074                 .type   = FIO_OPT_STR_STORE,
1075                 .off1   = td_var_offset(read_iolog_file),
1076                 .help   = "Playback IO pattern from file",
1077         },
1078         {
1079                 .name   = "exec_prerun",
1080                 .type   = FIO_OPT_STR_STORE,
1081                 .off1   = td_var_offset(exec_prerun),
1082                 .help   = "Execute this file prior to running job",
1083         },
1084         {
1085                 .name   = "exec_postrun",
1086                 .type   = FIO_OPT_STR_STORE,
1087                 .off1   = td_var_offset(exec_postrun),
1088                 .help   = "Execute this file after running job",
1089         },
1090 #ifdef FIO_HAVE_IOSCHED_SWITCH
1091         {
1092                 .name   = "ioscheduler",
1093                 .type   = FIO_OPT_STR_STORE,
1094                 .off1   = td_var_offset(ioscheduler),
1095                 .help   = "Use this IO scheduler on the backing device",
1096         },
1097 #endif
1098         {
1099                 .name   = "zonesize",
1100                 .type   = FIO_OPT_STR_VAL,
1101                 .off1   = td_var_offset(zone_size),
1102                 .help   = "Give size of an IO zone",
1103                 .def    = "0",
1104         },
1105         {
1106                 .name   = "zoneskip",
1107                 .type   = FIO_OPT_STR_VAL,
1108                 .off1   = td_var_offset(zone_skip),
1109                 .help   = "Space between IO zones",
1110                 .def    = "0",
1111         },
1112         {
1113                 .name   = "lockmem",
1114                 .type   = FIO_OPT_STR_VAL,
1115                 .cb     = str_lockmem_cb,
1116                 .help   = "Lock down this amount of memory",
1117                 .def    = "0",
1118         },
1119         {
1120                 .name   = "rwmixread",
1121                 .type   = FIO_OPT_INT,
1122                 .cb     = str_rwmix_read_cb,
1123                 .maxval = 100,
1124                 .help   = "Percentage of mixed workload that is reads",
1125                 .def    = "50",
1126         },
1127         {
1128                 .name   = "rwmixwrite",
1129                 .type   = FIO_OPT_INT,
1130                 .cb     = str_rwmix_write_cb,
1131                 .maxval = 100,
1132                 .help   = "Percentage of mixed workload that is writes",
1133                 .def    = "50",
1134         },
1135         {
1136                 .name   = "rwmixcycle",
1137                 .type   = FIO_OPT_DEPRECATED,
1138         },
1139         {
1140                 .name   = "nice",
1141                 .type   = FIO_OPT_INT,
1142                 .off1   = td_var_offset(nice),
1143                 .help   = "Set job CPU nice value",
1144                 .minval = -19,
1145                 .maxval = 20,
1146                 .def    = "0",
1147         },
1148 #ifdef FIO_HAVE_IOPRIO
1149         {
1150                 .name   = "prio",
1151                 .type   = FIO_OPT_INT,
1152                 .cb     = str_prio_cb,
1153                 .help   = "Set job IO priority value",
1154                 .minval = 0,
1155                 .maxval = 7,
1156         },
1157         {
1158                 .name   = "prioclass",
1159                 .type   = FIO_OPT_INT,
1160                 .cb     = str_prioclass_cb,
1161                 .help   = "Set job IO priority class",
1162                 .minval = 0,
1163                 .maxval = 3,
1164         },
1165 #endif
1166         {
1167                 .name   = "thinktime",
1168                 .type   = FIO_OPT_INT,
1169                 .off1   = td_var_offset(thinktime),
1170                 .help   = "Idle time between IO buffers (usec)",
1171                 .def    = "0",
1172         },
1173         {
1174                 .name   = "thinktime_spin",
1175                 .type   = FIO_OPT_INT,
1176                 .off1   = td_var_offset(thinktime_spin),
1177                 .help   = "Start think time by spinning this amount (usec)",
1178                 .def    = "0",
1179                 .parent = "thinktime",
1180         },
1181         {
1182                 .name   = "thinktime_blocks",
1183                 .type   = FIO_OPT_INT,
1184                 .off1   = td_var_offset(thinktime_blocks),
1185                 .help   = "IO buffer period between 'thinktime'",
1186                 .def    = "1",
1187                 .parent = "thinktime",
1188         },
1189         {
1190                 .name   = "rate",
1191                 .type   = FIO_OPT_INT,
1192                 .off1   = td_var_offset(rate),
1193                 .help   = "Set bandwidth rate",
1194         },
1195         {
1196                 .name   = "ratemin",
1197                 .type   = FIO_OPT_INT,
1198                 .off1   = td_var_offset(ratemin),
1199                 .help   = "Job must meet this rate or it will be shutdown",
1200                 .parent = "rate",
1201         },
1202         {
1203                 .name   = "rate_iops",
1204                 .type   = FIO_OPT_INT,
1205                 .off1   = td_var_offset(rate_iops),
1206                 .help   = "Limit IO used to this number of IO operations/sec",
1207         },
1208         {
1209                 .name   = "rate_iops_min",
1210                 .type   = FIO_OPT_INT,
1211                 .off1   = td_var_offset(rate_iops_min),
1212                 .help   = "Job must meet this rate or it will be shutdown",
1213                 .parent = "rate_iops",
1214         },
1215         {
1216                 .name   = "ratecycle",
1217                 .type   = FIO_OPT_INT,
1218                 .off1   = td_var_offset(ratecycle),
1219                 .help   = "Window average for rate limits (msec)",
1220                 .def    = "1000",
1221                 .parent = "rate",
1222         },
1223         {
1224                 .name   = "invalidate",
1225                 .type   = FIO_OPT_BOOL,
1226                 .off1   = td_var_offset(invalidate_cache),
1227                 .help   = "Invalidate buffer/page cache prior to running job",
1228                 .def    = "1",
1229         },
1230         {
1231                 .name   = "sync",
1232                 .type   = FIO_OPT_BOOL,
1233                 .off1   = td_var_offset(sync_io),
1234                 .help   = "Use O_SYNC for buffered writes",
1235                 .def    = "0",
1236                 .parent = "buffered",
1237         },
1238         {
1239                 .name   = "bwavgtime",
1240                 .type   = FIO_OPT_INT,
1241                 .off1   = td_var_offset(bw_avg_time),
1242                 .help   = "Time window over which to calculate bandwidth"
1243                           " (msec)",
1244                 .def    = "500",
1245         },
1246         {
1247                 .name   = "create_serialize",
1248                 .type   = FIO_OPT_BOOL,
1249                 .off1   = td_var_offset(create_serialize),
1250                 .help   = "Serialize creating of job files",
1251                 .def    = "1",
1252         },
1253         {
1254                 .name   = "create_fsync",
1255                 .type   = FIO_OPT_BOOL,
1256                 .off1   = td_var_offset(create_fsync),
1257                 .help   = "Fsync file after creation",
1258                 .def    = "1",
1259         },
1260         {
1261                 .name   = "cpuload",
1262                 .type   = FIO_OPT_INT,
1263                 .off1   = td_var_offset(cpuload),
1264                 .help   = "Use this percentage of CPU",
1265         },
1266         {
1267                 .name   = "cpuchunks",
1268                 .type   = FIO_OPT_INT,
1269                 .off1   = td_var_offset(cpucycle),
1270                 .help   = "Length of the CPU burn cycles (usecs)",
1271                 .def    = "50000",
1272                 .parent = "cpuload",
1273         },
1274 #ifdef FIO_HAVE_CPU_AFFINITY
1275         {
1276                 .name   = "cpumask",
1277                 .type   = FIO_OPT_INT,
1278                 .cb     = str_cpumask_cb,
1279                 .help   = "CPU affinity mask",
1280         },
1281         {
1282                 .name   = "cpus_allowed",
1283                 .type   = FIO_OPT_STR,
1284                 .cb     = str_cpus_allowed_cb,
1285                 .help   = "Set CPUs allowed",
1286         },
1287 #endif
1288         {
1289                 .name   = "end_fsync",
1290                 .type   = FIO_OPT_BOOL,
1291                 .off1   = td_var_offset(end_fsync),
1292                 .help   = "Include fsync at the end of job",
1293                 .def    = "0",
1294         },
1295         {
1296                 .name   = "fsync_on_close",
1297                 .type   = FIO_OPT_BOOL,
1298                 .off1   = td_var_offset(fsync_on_close),
1299                 .help   = "fsync files on close",
1300                 .def    = "0",
1301         },
1302         {
1303                 .name   = "unlink",
1304                 .type   = FIO_OPT_BOOL,
1305                 .off1   = td_var_offset(unlink),
1306                 .help   = "Unlink created files after job has completed",
1307                 .def    = "0",
1308         },
1309         {
1310                 .name   = "exitall",
1311                 .type   = FIO_OPT_STR_SET,
1312                 .cb     = str_exitall_cb,
1313                 .help   = "Terminate all jobs when one exits",
1314         },
1315         {
1316                 .name   = "stonewall",
1317                 .type   = FIO_OPT_STR_SET,
1318                 .off1   = td_var_offset(stonewall),
1319                 .help   = "Insert a hard barrier between this job and previous",
1320         },
1321         {
1322                 .name   = "new_group",
1323                 .type   = FIO_OPT_STR_SET,
1324                 .off1   = td_var_offset(new_group),
1325                 .help   = "Mark the start of a new group (for reporting)",
1326         },
1327         {
1328                 .name   = "thread",
1329                 .type   = FIO_OPT_STR_SET,
1330                 .off1   = td_var_offset(use_thread),
1331                 .help   = "Use threads instead of forks",
1332         },
1333         {
1334                 .name   = "write_bw_log",
1335                 .type   = FIO_OPT_STR,
1336                 .off1   = td_var_offset(write_bw_log),
1337                 .cb     = str_write_bw_log_cb,
1338                 .help   = "Write log of bandwidth during run",
1339         },
1340         {
1341                 .name   = "write_lat_log",
1342                 .type   = FIO_OPT_STR,
1343                 .off1   = td_var_offset(write_lat_log),
1344                 .cb     = str_write_lat_log_cb,
1345                 .help   = "Write log of latency during run",
1346         },
1347         {
1348                 .name   = "hugepage-size",
1349                 .type   = FIO_OPT_STR_VAL_INT,
1350                 .off1   = td_var_offset(hugepage_size),
1351                 .help   = "When using hugepages, specify size of each page",
1352                 .def    = __stringify(FIO_HUGE_PAGE),
1353         },
1354         {
1355                 .name   = "group_reporting",
1356                 .type   = FIO_OPT_STR_SET,
1357                 .off1   = td_var_offset(group_reporting),
1358                 .help   = "Do reporting on a per-group basis",
1359         },
1360         {
1361                 .name   = "zero_buffers",
1362                 .type   = FIO_OPT_STR_SET,
1363                 .off1   = td_var_offset(zero_buffers),
1364                 .help   = "Init IO buffers to all zeroes",
1365         },
1366         {
1367                 .name   = "refill_buffers",
1368                 .type   = FIO_OPT_STR_SET,
1369                 .off1   = td_var_offset(refill_buffers),
1370                 .help   = "Refill IO buffers on every IO submit",
1371         },
1372 #ifdef FIO_HAVE_DISK_UTIL
1373         {
1374                 .name   = "disk_util",
1375                 .type   = FIO_OPT_BOOL,
1376                 .off1   = td_var_offset(do_disk_util),
1377                 .help   = "Log disk utilization statistics",
1378                 .def    = "1",
1379         },
1380 #endif
1381         {
1382                 .name   = "gtod_reduce",
1383                 .type   = FIO_OPT_BOOL,
1384                 .help   = "Greatly reduce number of gettimeofday() calls",
1385                 .cb     = str_gtod_reduce_cb,
1386                 .def    = "0",
1387         },
1388         {
1389                 .name   = "disable_clat",
1390                 .type   = FIO_OPT_BOOL,
1391                 .off1   = td_var_offset(disable_clat),
1392                 .help   = "Disable completion latency numbers",
1393                 .parent = "gtod_reduce",
1394                 .def    = "0",
1395         },
1396         {
1397                 .name   = "disable_slat",
1398                 .type   = FIO_OPT_BOOL,
1399                 .off1   = td_var_offset(disable_slat),
1400                 .help   = "Disable submissionn latency numbers",
1401                 .parent = "gtod_reduce",
1402                 .def    = "0",
1403         },
1404         {
1405                 .name   = "disable_bw_measurement",
1406                 .type   = FIO_OPT_BOOL,
1407                 .off1   = td_var_offset(disable_bw),
1408                 .help   = "Disable bandwidth logging",
1409                 .parent = "gtod_reduce",
1410                 .def    = "0",
1411         },
1412         {
1413                 .name   = "gtod_cpu",
1414                 .type   = FIO_OPT_INT,
1415                 .cb     = str_gtod_cpu_cb,
1416                 .help   = "Setup dedicated gettimeofday() thread on this CPU",
1417         },
1418         {
1419                 .name = NULL,
1420         },
1421 };
1422
1423 void fio_options_dup_and_init(struct option *long_options)
1424 {
1425         struct fio_option *o;
1426         unsigned int i;
1427
1428         options_init(options);
1429
1430         i = 0;
1431         while (long_options[i].name)
1432                 i++;
1433
1434         o = &options[0];
1435         while (o->name) {
1436                 long_options[i].name = (char *) o->name;
1437                 long_options[i].val = FIO_GETOPT_JOB;
1438                 if (o->type == FIO_OPT_STR_SET)
1439                         long_options[i].has_arg = no_argument;
1440                 else
1441                         long_options[i].has_arg = required_argument;
1442
1443                 i++;
1444                 o++;
1445                 assert(i < FIO_NR_OPTIONS);
1446         }
1447 }
1448
1449 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
1450 {
1451         int i, ret;
1452
1453         sort_options(opts, options, num_opts);
1454
1455         for (ret = 0, i = 0; i < num_opts; i++)
1456                 ret |= parse_option(opts[i], options, td);
1457
1458         return ret;
1459 }
1460
1461 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1462 {
1463         return parse_cmd_option(opt, val, options, td);
1464 }
1465
1466 void fio_fill_default_options(struct thread_data *td)
1467 {
1468         fill_default_options(td, options);
1469 }
1470
1471 int fio_show_option_help(const char *opt)
1472 {
1473         return show_cmd_help(options, opt);
1474 }
1475
1476 static void __options_mem(struct thread_data *td, int alloc)
1477 {
1478         struct thread_options *o = &td->o;
1479         struct fio_option *opt;
1480         char **ptr;
1481         int i;
1482
1483         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1484                 if (opt->type != FIO_OPT_STR_STORE)
1485                         continue;
1486
1487                 ptr = (void *) o + opt->off1;
1488                 if (*ptr) {
1489                         if (alloc)
1490                                 *ptr = strdup(*ptr);
1491                         else {
1492                                 free(*ptr);
1493                                 *ptr = NULL;
1494                         }
1495                 }
1496         }
1497 }
1498
1499 /*
1500  * dupe FIO_OPT_STR_STORE options
1501  */
1502 void options_mem_dupe(struct thread_data *td)
1503 {
1504         __options_mem(td, 1);
1505 }
1506
1507 void options_mem_free(struct thread_data fio_unused *td)
1508 {
1509 #if 0
1510         __options_mem(td, 0);
1511 #endif
1512 }