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