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 static int str_gtod_cpu_cb(void *data, int *il)
 501 {
 502         struct thread_data *td = data;
 503         int val = *il;
 504
 505         td->o.gtod_cpu = val;
 506         td->o.gtod_offload = 1;
 507         return 0;
 508 }
 509
 510 #define __stringify_1(x)        #x
 511 #define __stringify(x)          __stringify_1(x)
 512
 513 /*
 514  * Map of job/command line options
 515  */
 516 static struct fio_option options[] = {
 517         {
 518                 .name   = "description",
 519                 .type   = FIO_OPT_STR_STORE,
 520                 .off1   = td_var_offset(description),
 521                 .help   = "Text job description",
 522         },
 523         {
 524                 .name   = "name",
 525                 .type   = FIO_OPT_STR_STORE,
 526                 .off1   = td_var_offset(name),
 527                 .help   = "Name of this job",
 528         },
 529         {
 530                 .name   = "directory",
 531                 .type   = FIO_OPT_STR_STORE,
 532                 .off1   = td_var_offset(directory),
 533                 .cb     = str_directory_cb,
 534                 .help   = "Directory to store files in",
 535         },
 536         {
 537                 .name   = "filename",
 538                 .type   = FIO_OPT_STR_STORE,
 539                 .off1   = td_var_offset(filename),
 540                 .cb     = str_filename_cb,
 541                 .prio   = 1, /* must come before "directory" */
 542                 .help   = "File(s) to use for the workload",
 543         },
 544         {
 545                 .name   = "lockfile",
 546                 .type   = FIO_OPT_STR,
 547                 .cb     = str_lockfile_cb,
 548                 .off1   = td_var_offset(file_lock_mode),
 549                 .help   = "Lock file when doing IO to it",
 550                 .parent = "filename",
 551                 .def    = "none",
 552                 .posval = {
 553                           { .ival = "none",
 554                             .oval = FILE_LOCK_NONE,
 555                             .help = "No file locking",
 556                           },
 557                           { .ival = "exclusive",
 558                             .oval = FILE_LOCK_EXCLUSIVE,
 559                             .help = "Exclusive file lock",
 560                           },
 561                           {
 562                             .ival = "readwrite",
 563                             .oval = FILE_LOCK_READWRITE,
 564                             .help = "Read vs write lock",
 565                           },
 566                 },
 567         },
 568         {
 569                 .name   = "opendir",
 570                 .type   = FIO_OPT_STR_STORE,
 571                 .off1   = td_var_offset(opendir),
 572                 .cb     = str_opendir_cb,
 573                 .help   = "Recursively add files from this directory and down",
 574         },
 575         {
 576                 .name   = "rw",
 577                 .alias  = "readwrite",
 578                 .type   = FIO_OPT_STR,
 579                 .cb     = str_rw_cb,
 580                 .off1   = td_var_offset(td_ddir),
 581                 .help   = "IO direction",
 582                 .def    = "read",
 583                 .posval = {
 584                           { .ival = "read",
 585                             .oval = TD_DDIR_READ,
 586                             .help = "Sequential read",
 587                           },
 588                           { .ival = "write",
 589                             .oval = TD_DDIR_WRITE,
 590                             .help = "Sequential write",
 591                           },
 592                           { .ival = "randread",
 593                             .oval = TD_DDIR_RANDREAD,
 594                             .help = "Random read",
 595                           },
 596                           { .ival = "randwrite",
 597                             .oval = TD_DDIR_RANDWRITE,
 598                             .help = "Random write",
 599                           },
 600                           { .ival = "rw",
 601                             .oval = TD_DDIR_RW,
 602                             .help = "Sequential read and write mix",
 603                           },
 604                           { .ival = "randrw",
 605                             .oval = TD_DDIR_RANDRW,
 606                             .help = "Random read and write mix"
 607                           },
 608                 },
 609         },
 610         {
 611                 .name   = "ioengine",
 612                 .type   = FIO_OPT_STR_STORE,
 613                 .off1   = td_var_offset(ioengine),
 614                 .help   = "IO engine to use",
 615                 .def    = "sync",
 616                 .posval = {
 617                           { .ival = "sync",
 618                             .help = "Use read/write",
 619                           },
 620                           { .ival = "psync",
 621                             .help = "Use pread/pwrite",
 622                           },
 623                           { .ival = "vsync",
 624                              .help = "Use readv/writev",
 625                           },
 626 #ifdef FIO_HAVE_LIBAIO
 627                           { .ival = "libaio",
 628                             .help = "Linux native asynchronous IO",
 629                           },
 630 #endif
 631 #ifdef FIO_HAVE_POSIXAIO
 632                           { .ival = "posixaio",
 633                             .help = "POSIX asynchronous IO",
 634                           },
 635 #endif
 636 #ifdef FIO_HAVE_SOLARISAIO
 637                           { .ival = "solarisaio",
 638                             .help = "Solaris native asynchronous IO",
 639                           },
 640 #endif
 641                           { .ival = "mmap",
 642                             .help = "Memory mapped IO",
 643                           },
 644 #ifdef FIO_HAVE_SPLICE
 645                           { .ival = "splice",
 646                             .help = "splice/vmsplice based IO",
 647                           },
 648                           { .ival = "netsplice",
 649                             .help = "splice/vmsplice to/from the network",
 650                           },
 651 #endif
 652 #ifdef FIO_HAVE_SGIO
 653                           { .ival = "sg",
 654                             .help = "SCSI generic v3 IO",
 655                           },
 656 #endif
 657                           { .ival = "null",
 658                             .help = "Testing engine (no data transfer)",
 659                           },
 660                           { .ival = "net",
 661                             .help = "Network IO",
 662                           },
 663 #ifdef FIO_HAVE_SYSLET
 664                           { .ival = "syslet-rw",
 665                             .help = "syslet enabled async pread/pwrite IO",
 666                           },
 667 #endif
 668                           { .ival = "cpuio",
 669                             .help = "CPU cycler burner engine",
 670                           },
 671 #ifdef FIO_HAVE_GUASI
 672                           { .ival = "guasi",
 673                             .help = "GUASI IO engine",
 674                           },
 675 #endif
 676                           { .ival = "external",
 677                             .help = "Load external engine (append name)",
 678                           },
 679                 },
 680         },
 681         {
 682                 .name   = "iodepth",
 683                 .type   = FIO_OPT_INT,
 684                 .off1   = td_var_offset(iodepth),
 685                 .help   = "Amount of IO buffers to keep in flight",
 686                 .minval = 1,
 687                 .def    = "1",
 688         },
 689         {
 690                 .name   = "iodepth_batch",
 691                 .alias  = "iodepth_batch_submit",
 692                 .type   = FIO_OPT_INT,
 693                 .off1   = td_var_offset(iodepth_batch),
 694                 .help   = "Number of IO to submit in one go",
 695                 .parent = "iodepth",
 696                 .minval = 1,
 697                 .def    = "1",
 698         },
 699         {
 700                 .name   = "iodepth_batch_complete",
 701                 .type   = FIO_OPT_INT,
 702                 .off1   = td_var_offset(iodepth_batch_complete),
 703                 .help   = "Number of IO to retrieve in one go",
 704                 .parent = "iodepth",
 705                 .minval = 0,
 706                 .def    = "1",
 707         },
 708         {
 709                 .name   = "iodepth_low",
 710                 .type   = FIO_OPT_INT,
 711                 .off1   = td_var_offset(iodepth_low),
 712                 .help   = "Low water mark for queuing depth",
 713                 .parent = "iodepth",
 714         },
 715         {
 716                 .name   = "size",
 717                 .type   = FIO_OPT_STR_VAL,
 718                 .off1   = td_var_offset(size),
 719                 .minval = 1,
 720                 .help   = "Total size of device or files",
 721         },
 722         {
 723                 .name   = "fill_device",
 724                 .type   = FIO_OPT_BOOL,
 725                 .off1   = td_var_offset(fill_device),
 726                 .help   = "Write until an ENOSPC error occurs",
 727                 .def    = "0",
 728         },
 729         {
 730                 .name   = "filesize",
 731                 .type   = FIO_OPT_STR_VAL,
 732                 .off1   = td_var_offset(file_size_low),
 733                 .off2   = td_var_offset(file_size_high),
 734                 .minval = 1,
 735                 .help   = "Size of individual files",
 736         },
 737         {
 738                 .name   = "offset",
 739                 .alias  = "fileoffset",
 740                 .type   = FIO_OPT_STR_VAL,
 741                 .off1   = td_var_offset(start_offset),
 742                 .help   = "Start IO from this offset",
 743                 .def    = "0",
 744         },
 745         {
 746                 .name   = "bs",
 747                 .alias  = "blocksize",
 748                 .type   = FIO_OPT_STR_VAL_INT,
 749                 .off1   = td_var_offset(bs[DDIR_READ]),
 750                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 751                 .minval = 1,
 752                 .help   = "Block size unit",
 753                 .def    = "4k",
 754                 .parent = "rw",
 755         },
 756         {
 757                 .name   = "bsrange",
 758                 .alias  = "blocksize_range",
 759                 .type   = FIO_OPT_RANGE,
 760                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 761                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 762                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 763                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 764                 .minval = 1,
 765                 .help   = "Set block size range (in more detail than bs)",
 766                 .parent = "rw",
 767         },
 768         {
 769                 .name   = "bssplit",
 770                 .type   = FIO_OPT_STR,
 771                 .cb     = str_bssplit_cb,
 772                 .help   = "Set a specific mix of block sizes",
 773                 .parent = "rw",
 774         },
 775         {
 776                 .name   = "bs_unaligned",
 777                 .alias  = "blocksize_unaligned",
 778                 .type   = FIO_OPT_STR_SET,
 779                 .off1   = td_var_offset(bs_unaligned),
 780                 .help   = "Don't sector align IO buffer sizes",
 781                 .parent = "rw",
 782         },
 783         {
 784                 .name   = "randrepeat",
 785                 .type   = FIO_OPT_BOOL,
 786                 .off1   = td_var_offset(rand_repeatable),
 787                 .help   = "Use repeatable random IO pattern",
 788                 .def    = "1",
 789                 .parent = "rw",
 790         },
 791         {
 792                 .name   = "norandommap",
 793                 .type   = FIO_OPT_STR_SET,
 794                 .off1   = td_var_offset(norandommap),
 795                 .help   = "Accept potential duplicate random blocks",
 796                 .parent = "rw",
 797         },
 798         {
 799                 .name   = "softrandommap",
 800                 .type   = FIO_OPT_BOOL,
 801                 .off1   = td_var_offset(softrandommap),
 802                 .help   = "Set norandommap if randommap allocation fails",
 803                 .parent = "norandommap",
 804                 .def    = "0",
 805         },
 806         {
 807                 .name   = "nrfiles",
 808                 .type   = FIO_OPT_INT,
 809                 .off1   = td_var_offset(nr_files),
 810                 .help   = "Split job workload between this number of files",
 811                 .def    = "1",
 812         },
 813         {
 814                 .name   = "openfiles",
 815                 .type   = FIO_OPT_INT,
 816                 .off1   = td_var_offset(open_files),
 817                 .help   = "Number of files to keep open at the same time",
 818         },
 819         {
 820                 .name   = "file_service_type",
 821                 .type   = FIO_OPT_STR,
 822                 .cb     = str_fst_cb,
 823                 .off1   = td_var_offset(file_service_type),
 824                 .help   = "How to select which file to service next",
 825                 .def    = "roundrobin",
 826                 .posval = {
 827                           { .ival = "random",
 828                             .oval = FIO_FSERVICE_RANDOM,
 829                             .help = "Choose a file at random",
 830                           },
 831                           { .ival = "roundrobin",
 832                             .oval = FIO_FSERVICE_RR,
 833                             .help = "Round robin select files",
 834                           },
 835                 },
 836                 .parent = "nrfiles",
 837         },
 838         {
 839                 .name   = "fadvise_hint",
 840                 .type   = FIO_OPT_BOOL,
 841                 .off1   = td_var_offset(fadvise_hint),
 842                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 843                 .def    = "1",
 844         },
 845         {
 846                 .name   = "fsync",
 847                 .type   = FIO_OPT_INT,
 848                 .off1   = td_var_offset(fsync_blocks),
 849                 .help   = "Issue fsync for writes every given number of blocks",
 850                 .def    = "0",
 851         },
 852         {
 853                 .name   = "direct",
 854                 .type   = FIO_OPT_BOOL,
 855                 .off1   = td_var_offset(odirect),
 856                 .help   = "Use O_DIRECT IO (negates buffered)",
 857                 .def    = "0",
 858         },
 859         {
 860                 .name   = "buffered",
 861                 .type   = FIO_OPT_BOOL,
 862                 .off1   = td_var_offset(odirect),
 863                 .neg    = 1,
 864                 .help   = "Use buffered IO (negates direct)",
 865                 .def    = "1",
 866         },
 867         {
 868                 .name   = "overwrite",
 869                 .type   = FIO_OPT_BOOL,
 870                 .off1   = td_var_offset(overwrite),
 871                 .help   = "When writing, set whether to overwrite current data",
 872                 .def    = "0",
 873         },
 874         {
 875                 .name   = "loops",
 876                 .type   = FIO_OPT_INT,
 877                 .off1   = td_var_offset(loops),
 878                 .help   = "Number of times to run the job",
 879                 .def    = "1",
 880         },
 881         {
 882                 .name   = "numjobs",
 883                 .type   = FIO_OPT_INT,
 884                 .off1   = td_var_offset(numjobs),
 885                 .help   = "Duplicate this job this many times",
 886                 .def    = "1",
 887         },
 888         {
 889                 .name   = "startdelay",
 890                 .type   = FIO_OPT_INT,
 891                 .off1   = td_var_offset(start_delay),
 892                 .help   = "Only start job when this period has passed",
 893                 .def    = "0",
 894         },
 895         {
 896                 .name   = "runtime",
 897                 .alias  = "timeout",
 898                 .type   = FIO_OPT_STR_VAL_TIME,
 899                 .off1   = td_var_offset(timeout),
 900                 .help   = "Stop workload when this amount of time has passed",
 901                 .def    = "0",
 902         },
 903         {
 904                 .name   = "time_based",
 905                 .type   = FIO_OPT_STR_SET,
 906                 .off1   = td_var_offset(time_based),
 907                 .help   = "Keep running until runtime/timeout is met",
 908         },
 909         {
 910                 .name   = "ramp_time",
 911                 .type   = FIO_OPT_STR_VAL_TIME,
 912                 .off1   = td_var_offset(ramp_time),
 913                 .help   = "Ramp up time before measuring performance",
 914         },
 915         {
 916                 .name   = "mem",
 917                 .alias  = "iomem",
 918                 .type   = FIO_OPT_STR,
 919                 .cb     = str_mem_cb,
 920                 .off1   = td_var_offset(mem_type),
 921                 .help   = "Backing type for IO buffers",
 922                 .def    = "malloc",
 923                 .posval = {
 924                           { .ival = "malloc",
 925                             .oval = MEM_MALLOC,
 926                             .help = "Use malloc(3) for IO buffers",
 927                           },
 928                           { .ival = "shm",
 929                             .oval = MEM_SHM,
 930                             .help = "Use shared memory segments for IO buffers",
 931                           },
 932 #ifdef FIO_HAVE_HUGETLB
 933                           { .ival = "shmhuge",
 934                             .oval = MEM_SHMHUGE,
 935                             .help = "Like shm, but use huge pages",
 936                           },
 937 #endif
 938                           { .ival = "mmap",
 939                             .oval = MEM_MMAP,
 940                             .help = "Use mmap(2) (file or anon) for IO buffers",
 941                           },
 942 #ifdef FIO_HAVE_HUGETLB
 943                           { .ival = "mmaphuge",
 944                             .oval = MEM_MMAPHUGE,
 945                             .help = "Like mmap, but use huge pages",
 946                           },
 947 #endif
 948                   },
 949         },
 950         {
 951                 .name   = "verify",
 952                 .type   = FIO_OPT_STR,
 953                 .off1   = td_var_offset(verify),
 954                 .help   = "Verify data written",
 955                 .def    = "0",
 956                 .posval = {
 957                           { .ival = "0",
 958                             .oval = VERIFY_NONE,
 959                             .help = "Don't do IO verification",
 960                           },
 961                           { .ival = "md5",
 962                             .oval = VERIFY_MD5,
 963                             .help = "Use md5 checksums for verification",
 964                           },
 965                           { .ival = "crc64",
 966                             .oval = VERIFY_CRC64,
 967                             .help = "Use crc64 checksums for verification",
 968                           },
 969                           { .ival = "crc32",
 970                             .oval = VERIFY_CRC32,
 971                             .help = "Use crc32 checksums for verification",
 972                           },
 973                           { .ival = "crc32c-intel",
 974                             .oval = VERIFY_CRC32C_INTEL,
 975                             .help = "Use hw crc32c checksums for verification",
 976                           },
 977                           { .ival = "crc32c",
 978                             .oval = VERIFY_CRC32C,
 979                             .help = "Use crc32c checksums for verification",
 980                           },
 981                           { .ival = "crc16",
 982                             .oval = VERIFY_CRC16,
 983                             .help = "Use crc16 checksums for verification",
 984                           },
 985                           { .ival = "crc7",
 986                             .oval = VERIFY_CRC7,
 987                             .help = "Use crc7 checksums for verification",
 988                           },
 989                           { .ival = "sha256",
 990                             .oval = VERIFY_SHA256,
 991                             .help = "Use sha256 checksums for verification",
 992                           },
 993                           { .ival = "sha512",
 994                             .oval = VERIFY_SHA512,
 995                             .help = "Use sha512 checksums for verification",
 996                           },
 997                           { .ival = "meta",
 998                             .oval = VERIFY_META,
 999                             .help = "Use io information",
1000                           },
1001                           {
1002                             .ival = "null",
1003                             .oval = VERIFY_NULL,
1004                             .help = "Pretend to verify",
1005                           },
1006                 },
1007         },
1008         {
1009                 .name   = "do_verify",
1010                 .type   = FIO_OPT_BOOL,
1011                 .off1   = td_var_offset(do_verify),
1012                 .help   = "Run verification stage after write",
1013                 .def    = "1",
1014                 .parent = "verify",
1015         },
1016         {
1017                 .name   = "verifysort",
1018                 .type   = FIO_OPT_BOOL,
1019                 .off1   = td_var_offset(verifysort),
1020                 .help   = "Sort written verify blocks for read back",
1021                 .def    = "1",
1022                 .parent = "verify",
1023         },
1024         {
1025                 .name   = "verify_interval",
1026                 .type   = FIO_OPT_STR_VAL_INT,
1027                 .off1   = td_var_offset(verify_interval),
1028                 .minval = 2 * sizeof(struct verify_header),
1029                 .help   = "Store verify buffer header every N bytes",
1030                 .parent = "verify",
1031         },
1032         {
1033                 .name   = "verify_offset",
1034                 .type   = FIO_OPT_STR_VAL_INT,
1035                 .help   = "Offset verify header location by N bytes",
1036                 .def    = "0",
1037                 .cb     = str_verify_offset_cb,
1038                 .parent = "verify",
1039         },
1040         {
1041                 .name   = "verify_pattern",
1042                 .type   = FIO_OPT_INT,
1043                 .cb     = str_verify_pattern_cb,
1044                 .help   = "Fill pattern for IO buffers",
1045                 .parent = "verify",
1046         },
1047         {
1048                 .name   = "verify_fatal",
1049                 .type   = FIO_OPT_BOOL,
1050                 .off1   = td_var_offset(verify_fatal),
1051                 .def    = "0",
1052                 .help   = "Exit on a single verify failure, don't continue",
1053                 .parent = "verify",
1054         },
1055         {
1056                 .name   = "write_iolog",
1057                 .type   = FIO_OPT_STR_STORE,
1058                 .off1   = td_var_offset(write_iolog_file),
1059                 .help   = "Store IO pattern to file",
1060         },
1061         {
1062                 .name   = "read_iolog",
1063                 .type   = FIO_OPT_STR_STORE,
1064                 .off1   = td_var_offset(read_iolog_file),
1065                 .help   = "Playback IO pattern from file",
1066         },
1067         {
1068                 .name   = "exec_prerun",
1069                 .type   = FIO_OPT_STR_STORE,
1070                 .off1   = td_var_offset(exec_prerun),
1071                 .help   = "Execute this file prior to running job",
1072         },
1073         {
1074                 .name   = "exec_postrun",
1075                 .type   = FIO_OPT_STR_STORE,
1076                 .off1   = td_var_offset(exec_postrun),
1077                 .help   = "Execute this file after running job",
1078         },
1079 #ifdef FIO_HAVE_IOSCHED_SWITCH
1080         {
1081                 .name   = "ioscheduler",
1082                 .type   = FIO_OPT_STR_STORE,
1083                 .off1   = td_var_offset(ioscheduler),
1084                 .help   = "Use this IO scheduler on the backing device",
1085         },
1086 #endif
1087         {
1088                 .name   = "zonesize",
1089                 .type   = FIO_OPT_STR_VAL,
1090                 .off1   = td_var_offset(zone_size),
1091                 .help   = "Give size of an IO zone",
1092                 .def    = "0",
1093         },
1094         {
1095                 .name   = "zoneskip",
1096                 .type   = FIO_OPT_STR_VAL,
1097                 .off1   = td_var_offset(zone_skip),
1098                 .help   = "Space between IO zones",
1099                 .def    = "0",
1100         },
1101         {
1102                 .name   = "lockmem",
1103                 .type   = FIO_OPT_STR_VAL,
1104                 .cb     = str_lockmem_cb,
1105                 .help   = "Lock down this amount of memory",
1106                 .def    = "0",
1107         },
1108         {
1109                 .name   = "rwmixread",
1110                 .type   = FIO_OPT_INT,
1111                 .cb     = str_rwmix_read_cb,
1112                 .maxval = 100,
1113                 .help   = "Percentage of mixed workload that is reads",
1114                 .def    = "50",
1115         },
1116         {
1117                 .name   = "rwmixwrite",
1118                 .type   = FIO_OPT_INT,
1119                 .cb     = str_rwmix_write_cb,
1120                 .maxval = 100,
1121                 .help   = "Percentage of mixed workload that is writes",
1122                 .def    = "50",
1123         },
1124         {
1125                 .name   = "rwmixcycle",
1126                 .type   = FIO_OPT_DEPRECATED,
1127         },
1128         {
1129                 .name   = "nice",
1130                 .type   = FIO_OPT_INT,
1131                 .off1   = td_var_offset(nice),
1132                 .help   = "Set job CPU nice value",
1133                 .minval = -19,
1134                 .maxval = 20,
1135                 .def    = "0",
1136         },
1137 #ifdef FIO_HAVE_IOPRIO
1138         {
1139                 .name   = "prio",
1140                 .type   = FIO_OPT_INT,
1141                 .cb     = str_prio_cb,
1142                 .help   = "Set job IO priority value",
1143                 .minval = 0,
1144                 .maxval = 7,
1145         },
1146         {
1147                 .name   = "prioclass",
1148                 .type   = FIO_OPT_INT,
1149                 .cb     = str_prioclass_cb,
1150                 .help   = "Set job IO priority class",
1151                 .minval = 0,
1152                 .maxval = 3,
1153         },
1154 #endif
1155         {
1156                 .name   = "thinktime",
1157                 .type   = FIO_OPT_INT,
1158                 .off1   = td_var_offset(thinktime),
1159                 .help   = "Idle time between IO buffers (usec)",
1160                 .def    = "0",
1161         },
1162         {
1163                 .name   = "thinktime_spin",
1164                 .type   = FIO_OPT_INT,
1165                 .off1   = td_var_offset(thinktime_spin),
1166                 .help   = "Start think time by spinning this amount (usec)",
1167                 .def    = "0",
1168                 .parent = "thinktime",
1169         },
1170         {
1171                 .name   = "thinktime_blocks",
1172                 .type   = FIO_OPT_INT,
1173                 .off1   = td_var_offset(thinktime_blocks),
1174                 .help   = "IO buffer period between 'thinktime'",
1175                 .def    = "1",
1176                 .parent = "thinktime",
1177         },
1178         {
1179                 .name   = "rate",
1180                 .type   = FIO_OPT_INT,
1181                 .off1   = td_var_offset(rate),
1182                 .help   = "Set bandwidth rate",
1183         },
1184         {
1185                 .name   = "ratemin",
1186                 .type   = FIO_OPT_INT,
1187                 .off1   = td_var_offset(ratemin),
1188                 .help   = "Job must meet this rate or it will be shutdown",
1189                 .parent = "rate",
1190         },
1191         {
1192                 .name   = "rate_iops",
1193                 .type   = FIO_OPT_INT,
1194                 .off1   = td_var_offset(rate_iops),
1195                 .help   = "Limit IO used to this number of IO operations/sec",
1196         },
1197         {
1198                 .name   = "rate_iops_min",
1199                 .type   = FIO_OPT_INT,
1200                 .off1   = td_var_offset(rate_iops_min),
1201                 .help   = "Job must meet this rate or it will be shutdown",
1202                 .parent = "rate_iops",
1203         },
1204         {
1205                 .name   = "ratecycle",
1206                 .type   = FIO_OPT_INT,
1207                 .off1   = td_var_offset(ratecycle),
1208                 .help   = "Window average for rate limits (msec)",
1209                 .def    = "1000",
1210                 .parent = "rate",
1211         },
1212         {
1213                 .name   = "invalidate",
1214                 .type   = FIO_OPT_BOOL,
1215                 .off1   = td_var_offset(invalidate_cache),
1216                 .help   = "Invalidate buffer/page cache prior to running job",
1217                 .def    = "1",
1218         },
1219         {
1220                 .name   = "sync",
1221                 .type   = FIO_OPT_BOOL,
1222                 .off1   = td_var_offset(sync_io),
1223                 .help   = "Use O_SYNC for buffered writes",
1224                 .def    = "0",
1225                 .parent = "buffered",
1226         },
1227         {
1228                 .name   = "bwavgtime",
1229                 .type   = FIO_OPT_INT,
1230                 .off1   = td_var_offset(bw_avg_time),
1231                 .help   = "Time window over which to calculate bandwidth"
1232                           " (msec)",
1233                 .def    = "500",
1234         },
1235         {
1236                 .name   = "create_serialize",
1237                 .type   = FIO_OPT_BOOL,
1238                 .off1   = td_var_offset(create_serialize),
1239                 .help   = "Serialize creating of job files",
1240                 .def    = "1",
1241         },
1242         {
1243                 .name   = "create_fsync",
1244                 .type   = FIO_OPT_BOOL,
1245                 .off1   = td_var_offset(create_fsync),
1246                 .help   = "Fsync file after creation",
1247                 .def    = "1",
1248         },
1249         {
1250                 .name   = "cpuload",
1251                 .type   = FIO_OPT_INT,
1252                 .off1   = td_var_offset(cpuload),
1253                 .help   = "Use this percentage of CPU",
1254         },
1255         {
1256                 .name   = "cpuchunks",
1257                 .type   = FIO_OPT_INT,
1258                 .off1   = td_var_offset(cpucycle),
1259                 .help   = "Length of the CPU burn cycles (usecs)",
1260                 .def    = "50000",
1261                 .parent = "cpuload",
1262         },
1263 #ifdef FIO_HAVE_CPU_AFFINITY
1264         {
1265                 .name   = "cpumask",
1266                 .type   = FIO_OPT_INT,
1267                 .cb     = str_cpumask_cb,
1268                 .help   = "CPU affinity mask",
1269         },
1270         {
1271                 .name   = "cpus_allowed",
1272                 .type   = FIO_OPT_STR,
1273                 .cb     = str_cpus_allowed_cb,
1274                 .help   = "Set CPUs allowed",
1275         },
1276 #endif
1277         {
1278                 .name   = "end_fsync",
1279                 .type   = FIO_OPT_BOOL,
1280                 .off1   = td_var_offset(end_fsync),
1281                 .help   = "Include fsync at the end of job",
1282                 .def    = "0",
1283         },
1284         {
1285                 .name   = "fsync_on_close",
1286                 .type   = FIO_OPT_BOOL,
1287                 .off1   = td_var_offset(fsync_on_close),
1288                 .help   = "fsync files on close",
1289                 .def    = "0",
1290         },
1291         {
1292                 .name   = "unlink",
1293                 .type   = FIO_OPT_BOOL,
1294                 .off1   = td_var_offset(unlink),
1295                 .help   = "Unlink created files after job has completed",
1296                 .def    = "0",
1297         },
1298         {
1299                 .name   = "exitall",
1300                 .type   = FIO_OPT_STR_SET,
1301                 .cb     = str_exitall_cb,
1302                 .help   = "Terminate all jobs when one exits",
1303         },
1304         {
1305                 .name   = "stonewall",
1306                 .type   = FIO_OPT_STR_SET,
1307                 .off1   = td_var_offset(stonewall),
1308                 .help   = "Insert a hard barrier between this job and previous",
1309         },
1310         {
1311                 .name   = "new_group",
1312                 .type   = FIO_OPT_STR_SET,
1313                 .off1   = td_var_offset(new_group),
1314                 .help   = "Mark the start of a new group (for reporting)",
1315         },
1316         {
1317                 .name   = "thread",
1318                 .type   = FIO_OPT_STR_SET,
1319                 .off1   = td_var_offset(use_thread),
1320                 .help   = "Use threads instead of forks",
1321         },
1322         {
1323                 .name   = "write_bw_log",
1324                 .type   = FIO_OPT_STR,
1325                 .off1   = td_var_offset(write_bw_log),
1326                 .cb     = str_write_bw_log_cb,
1327                 .help   = "Write log of bandwidth during run",
1328         },
1329         {
1330                 .name   = "write_lat_log",
1331                 .type   = FIO_OPT_STR,
1332                 .off1   = td_var_offset(write_lat_log),
1333                 .cb     = str_write_lat_log_cb,
1334                 .help   = "Write log of latency during run",
1335         },
1336         {
1337                 .name   = "hugepage-size",
1338                 .type   = FIO_OPT_STR_VAL_INT,
1339                 .off1   = td_var_offset(hugepage_size),
1340                 .help   = "When using hugepages, specify size of each page",
1341                 .def    = __stringify(FIO_HUGE_PAGE),
1342         },
1343         {
1344                 .name   = "group_reporting",
1345                 .type   = FIO_OPT_STR_SET,
1346                 .off1   = td_var_offset(group_reporting),
1347                 .help   = "Do reporting on a per-group basis",
1348         },
1349         {
1350                 .name   = "zero_buffers",
1351                 .type   = FIO_OPT_STR_SET,
1352                 .off1   = td_var_offset(zero_buffers),
1353                 .help   = "Init IO buffers to all zeroes",
1354         },
1355         {
1356                 .name   = "refill_buffers",
1357                 .type   = FIO_OPT_STR_SET,
1358                 .off1   = td_var_offset(refill_buffers),
1359                 .help   = "Refill IO buffers on every IO submit",
1360         },
1361 #ifdef FIO_HAVE_DISK_UTIL
1362         {
1363                 .name   = "disk_util",
1364                 .type   = FIO_OPT_BOOL,
1365                 .off1   = td_var_offset(do_disk_util),
1366                 .help   = "Log disk utilization statistics",
1367                 .def    = "1",
1368         },
1369 #endif
1370         {
1371                 .name   = "gtod_reduce",
1372                 .type   = FIO_OPT_BOOL,
1373                 .help   = "Greatly reduce number of gettimeofday() calls",
1374                 .cb     = str_gtod_reduce_cb,
1375                 .def    = "0",
1376         },
1377         {
1378                 .name   = "disable_clat",
1379                 .type   = FIO_OPT_BOOL,
1380                 .off1   = td_var_offset(disable_clat),
1381                 .help   = "Disable completion latency numbers",
1382                 .parent = "gtod_reduce",
1383                 .def    = "0",
1384         },
1385         {
1386                 .name   = "disable_slat",
1387                 .type   = FIO_OPT_BOOL,
1388                 .off1   = td_var_offset(disable_slat),
1389                 .help   = "Disable submissionn latency numbers",
1390                 .parent = "gtod_reduce",
1391                 .def    = "0",
1392         },
1393         {
1394                 .name   = "disable_bw_measurement",
1395                 .type   = FIO_OPT_BOOL,
1396                 .off1   = td_var_offset(disable_bw),
1397                 .help   = "Disable bandwidth logging",
1398                 .parent = "gtod_reduce",
1399                 .def    = "0",
1400         },
1401         {
1402                 .name   = "gtod_cpu",
1403                 .type   = FIO_OPT_INT,
1404                 .cb     = str_gtod_cpu_cb,
1405                 .help   = "Setup dedicated gettimeofday() thread on this CPU",
1406         },
1407         {
1408                 .name = NULL,
1409         },
1410 };
1411
1412 void fio_options_dup_and_init(struct option *long_options)
1413 {
1414         struct fio_option *o;
1415         unsigned int i;
1416
1417         options_init(options);
1418
1419         i = 0;
1420         while (long_options[i].name)
1421                 i++;
1422
1423         o = &options[0];
1424         while (o->name) {
1425                 long_options[i].name = (char *) o->name;
1426                 long_options[i].val = FIO_GETOPT_JOB;
1427                 if (o->type == FIO_OPT_STR_SET)
1428                         long_options[i].has_arg = no_argument;
1429                 else
1430                         long_options[i].has_arg = required_argument;
1431
1432                 i++;
1433                 o++;
1434                 assert(i < FIO_NR_OPTIONS);
1435         }
1436 }
1437
1438 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
1439 {
1440         int i, ret;
1441
1442         sort_options(opts, options, num_opts);
1443
1444         for (ret = 0, i = 0; i < num_opts; i++)
1445                 ret |= parse_option(opts[i], options, td);
1446
1447         return ret;
1448 }
1449
1450 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1451 {
1452         return parse_cmd_option(opt, val, options, td);
1453 }
1454
1455 void fio_fill_default_options(struct thread_data *td)
1456 {
1457         fill_default_options(td, options);
1458 }
1459
1460 int fio_show_option_help(const char *opt)
1461 {
1462         return show_cmd_help(options, opt);
1463 }
1464
1465 static void __options_mem(struct thread_data *td, int alloc)
1466 {
1467         struct thread_options *o = &td->o;
1468         struct fio_option *opt;
1469         char **ptr;
1470         int i;
1471
1472         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1473                 if (opt->type != FIO_OPT_STR_STORE)
1474                         continue;
1475
1476                 ptr = (void *) o + opt->off1;
1477                 if (*ptr) {
1478                         if (alloc)
1479                                 *ptr = strdup(*ptr);
1480                         else {
1481                                 free(*ptr);
1482                                 *ptr = NULL;
1483                         }
1484                 }
1485         }
1486 }
1487
1488 /*
1489  * dupe FIO_OPT_STR_STORE options
1490  */
1491 void options_mem_dupe(struct thread_data *td)
1492 {
1493         __options_mem(td, 1);
1494 }
1495
1496 void options_mem_free(struct thread_data fio_unused *td)
1497 {
1498 #if 0
1499         __options_mem(td, 0);
1500 #endif
1501 }