options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163 }
 164
 165 static int str_bssplit_cb(void *data, const char *input)
 166 {
 167         struct thread_data *td = data;
 168         char *str, *p, *odir;
 169         int ret = 0;
 170
 171         p = str = strdup(input);
 172
 173         strip_blank_front(&str);
 174         strip_blank_end(str);
 175
 176         odir = strchr(str, ',');
 177         if (odir) {
 178                 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 179                 if (!ret) {
 180                         *odir = '\0';
 181                         ret = bssplit_ddir(td, DDIR_READ, str);
 182                 }
 183         } else {
 184                 char *op;
 185
 186                 op = strdup(str);
 187
 188                 ret = bssplit_ddir(td, DDIR_READ, str);
 189                 if (!ret)
 190                         ret = bssplit_ddir(td, DDIR_WRITE, op);
 191
 192                 free(op);
 193         }
 194
 195         free(p);
 196         return ret;
 197 }
 198
 199 static int str_rw_cb(void *data, const char *str)
 200 {
 201         struct thread_data *td = data;
 202         char *nr = get_opt_postfix(str);
 203
 204         td->o.ddir_seq_nr = 1;
 205         td->o.ddir_seq_add = 0;
 206
 207         if (!nr)
 208                 return 0;
 209
 210         if (td_random(td))
 211                 td->o.ddir_seq_nr = atoi(nr);
 212         else {
 213                 long long val;
 214
 215                 if (str_to_decimal(nr, &val, 1, td)) {
 216                         log_err("fio: rw postfix parsing failed\n");
 217                         free(nr);
 218                         return 1;
 219                 }
 220
 221                 td->o.ddir_seq_add = val;
 222         }
 223
 224         free(nr);
 225         return 0;
 226 }
 227
 228 static int str_mem_cb(void *data, const char *mem)
 229 {
 230         struct thread_data *td = data;
 231
 232         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 233                 td->mmapfile = get_opt_postfix(mem);
 234                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 235                         log_err("fio: mmaphuge:/path/to/file\n");
 236                         return 1;
 237                 }
 238         }
 239
 240         return 0;
 241 }
 242
 243 static int str_verify_cb(void *data, const char *mem)
 244 {
 245         struct thread_data *td = data;
 246
 247         if (td->o.verify == VERIFY_CRC32C_INTEL ||
 248             td->o.verify == VERIFY_CRC32C) {
 249                 crc32c_intel_probe();
 250         }
 251
 252         return 0;
 253 }
 254
 255 static int fio_clock_source_cb(void *data, const char *str)
 256 {
 257         struct thread_data *td = data;
 258
 259         fio_clock_source = td->o.clocksource;
 260         fio_time_init();
 261         return 0;
 262 }
 263
 264 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 265 {
 266         mlock_size = *val;
 267         return 0;
 268 }
 269
 270 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 271 {
 272         struct thread_data *td = data;
 273
 274         td->o.rwmix[DDIR_READ] = *val;
 275         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 276         return 0;
 277 }
 278
 279 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 280 {
 281         struct thread_data *td = data;
 282
 283         td->o.rwmix[DDIR_WRITE] = *val;
 284         td->o.rwmix[DDIR_READ] = 100 - *val;
 285         return 0;
 286 }
 287
 288 #ifdef FIO_HAVE_IOPRIO
 289 static int str_prioclass_cb(void *data, unsigned long long *val)
 290 {
 291         struct thread_data *td = data;
 292         unsigned short mask;
 293
 294         /*
 295          * mask off old class bits, str_prio_cb() may have set a default class
 296          */
 297         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 298         td->ioprio &= mask;
 299
 300         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 301         td->ioprio_set = 1;
 302         return 0;
 303 }
 304
 305 static int str_prio_cb(void *data, unsigned long long *val)
 306 {
 307         struct thread_data *td = data;
 308
 309         td->ioprio |= *val;
 310
 311         /*
 312          * If no class is set, assume BE
 313          */
 314         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 315                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 316
 317         td->ioprio_set = 1;
 318         return 0;
 319 }
 320 #endif
 321
 322 static int str_exitall_cb(void)
 323 {
 324         exitall_on_terminate = 1;
 325         return 0;
 326 }
 327
 328 #ifdef FIO_HAVE_CPU_AFFINITY
 329 static int str_cpumask_cb(void *data, unsigned long long *val)
 330 {
 331         struct thread_data *td = data;
 332         unsigned int i;
 333         long max_cpu;
 334         int ret;
 335
 336         ret = fio_cpuset_init(&td->o.cpumask);
 337         if (ret < 0) {
 338                 log_err("fio: cpuset_init failed\n");
 339                 td_verror(td, ret, "fio_cpuset_init");
 340                 return 1;
 341         }
 342
 343         max_cpu = cpus_online();
 344
 345         for (i = 0; i < sizeof(int) * 8; i++) {
 346                 if ((1 << i) & *val) {
 347                         if (i > max_cpu) {
 348                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 349                                                                 max_cpu);
 350                                 return 1;
 351                         }
 352                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 353                         fio_cpu_set(&td->o.cpumask, i);
 354                 }
 355         }
 356
 357         td->o.cpumask_set = 1;
 358         return 0;
 359 }
 360
 361 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 362                             const char *input)
 363 {
 364         char *cpu, *str, *p;
 365         long max_cpu;
 366         int ret = 0;
 367
 368         ret = fio_cpuset_init(mask);
 369         if (ret < 0) {
 370                 log_err("fio: cpuset_init failed\n");
 371                 td_verror(td, ret, "fio_cpuset_init");
 372                 return 1;
 373         }
 374
 375         p = str = strdup(input);
 376
 377         strip_blank_front(&str);
 378         strip_blank_end(str);
 379
 380         max_cpu = cpus_online();
 381
 382         while ((cpu = strsep(&str, ",")) != NULL) {
 383                 char *str2, *cpu2;
 384                 int icpu, icpu2;
 385
 386                 if (!strlen(cpu))
 387                         break;
 388
 389                 str2 = cpu;
 390                 icpu2 = -1;
 391                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 392                         if (!strlen(cpu2))
 393                                 break;
 394
 395                         icpu2 = atoi(cpu2);
 396                 }
 397
 398                 icpu = atoi(cpu);
 399                 if (icpu2 == -1)
 400                         icpu2 = icpu;
 401                 while (icpu <= icpu2) {
 402                         if (icpu >= FIO_MAX_CPUS) {
 403                                 log_err("fio: your OS only supports up to"
 404                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 405                                 ret = 1;
 406                                 break;
 407                         }
 408                         if (icpu > max_cpu) {
 409                                 log_err("fio: CPU %d too large (max=%ld)\n",
 410                                                         icpu, max_cpu);
 411                                 ret = 1;
 412                                 break;
 413                         }
 414
 415                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 416                         fio_cpu_set(mask, icpu);
 417                         icpu++;
 418                 }
 419                 if (ret)
 420                         break;
 421         }
 422
 423         free(p);
 424         if (!ret)
 425                 td->o.cpumask_set = 1;
 426         return ret;
 427 }
 428
 429 static int str_cpus_allowed_cb(void *data, const char *input)
 430 {
 431         struct thread_data *td = data;
 432         int ret;
 433
 434         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 435         if (!ret)
 436                 td->o.cpumask_set = 1;
 437
 438         return ret;
 439 }
 440
 441 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 442 {
 443         struct thread_data *td = data;
 444         int ret;
 445
 446         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 447         if (!ret)
 448                 td->o.verify_cpumask_set = 1;
 449
 450         return ret;
 451 }
 452 #endif
 453
 454 #ifdef FIO_HAVE_TRIM
 455 static int str_verify_trim_cb(void *data, unsigned long long *val)
 456 {
 457         struct thread_data *td = data;
 458
 459         td->o.trim_percentage = *val;
 460         return 0;
 461 }
 462 #endif
 463
 464 static int str_fst_cb(void *data, const char *str)
 465 {
 466         struct thread_data *td = data;
 467         char *nr = get_opt_postfix(str);
 468
 469         td->file_service_nr = 1;
 470         if (nr) {
 471                 td->file_service_nr = atoi(nr);
 472                 free(nr);
 473         }
 474
 475         return 0;
 476 }
 477
 478 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 479 static int str_sfr_cb(void *data, const char *str)
 480 {
 481         struct thread_data *td = data;
 482         char *nr = get_opt_postfix(str);
 483
 484         td->sync_file_range_nr = 1;
 485         if (nr) {
 486                 td->sync_file_range_nr = atoi(nr);
 487                 free(nr);
 488         }
 489
 490         return 0;
 491 }
 492 #endif
 493
 494 static int check_dir(struct thread_data *td, char *fname)
 495 {
 496 #if 0
 497         char file[PATH_MAX], *dir;
 498         int elen = 0;
 499
 500         if (td->o.directory) {
 501                 strcpy(file, td->o.directory);
 502                 strcat(file, "/");
 503                 elen = strlen(file);
 504         }
 505
 506         sprintf(file + elen, "%s", fname);
 507         dir = dirname(file);
 508
 509         {
 510         struct stat sb;
 511         /*
 512          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 513          * yet, so we can't do this check right here...
 514          */
 515         if (lstat(dir, &sb) < 0) {
 516                 int ret = errno;
 517
 518                 log_err("fio: %s is not a directory\n", dir);
 519                 td_verror(td, ret, "lstat");
 520                 return 1;
 521         }
 522
 523         if (!S_ISDIR(sb.st_mode)) {
 524                 log_err("fio: %s is not a directory\n", dir);
 525                 return 1;
 526         }
 527         }
 528 #endif
 529
 530         return 0;
 531 }
 532
 533 /*
 534  * Return next file in the string. Files are separated with ':'. If the ':'
 535  * is escaped with a '\', then that ':' is part of the filename and does not
 536  * indicate a new file.
 537  */
 538 static char *get_next_file_name(char **ptr)
 539 {
 540         char *str = *ptr;
 541         char *p, *start;
 542
 543         if (!str || !strlen(str))
 544                 return NULL;
 545
 546         start = str;
 547         do {
 548                 /*
 549                  * No colon, we are done
 550                  */
 551                 p = strchr(str, ':');
 552                 if (!p) {
 553                         *ptr = NULL;
 554                         break;
 555                 }
 556
 557                 /*
 558                  * We got a colon, but it's the first character. Skip and
 559                  * continue
 560                  */
 561                 if (p == start) {
 562                         str = ++start;
 563                         continue;
 564                 }
 565
 566                 if (*(p - 1) != '\\') {
 567                         *p = '\0';
 568                         *ptr = p + 1;
 569                         break;
 570                 }
 571
 572                 memmove(p - 1, p, strlen(p) + 1);
 573                 str = p;
 574         } while (1);
 575
 576         return start;
 577 }
 578
 579 static int str_filename_cb(void *data, const char *input)
 580 {
 581         struct thread_data *td = data;
 582         char *fname, *str, *p;
 583
 584         p = str = strdup(input);
 585
 586         strip_blank_front(&str);
 587         strip_blank_end(str);
 588
 589         if (!td->files_index)
 590                 td->o.nr_files = 0;
 591
 592         while ((fname = get_next_file_name(&str)) != NULL) {
 593                 if (!strlen(fname))
 594                         break;
 595                 if (check_dir(td, fname)) {
 596                         free(p);
 597                         return 1;
 598                 }
 599                 add_file(td, fname);
 600                 td->o.nr_files++;
 601         }
 602
 603         free(p);
 604         return 0;
 605 }
 606
 607 static int str_directory_cb(void *data, const char fio_unused *str)
 608 {
 609         struct thread_data *td = data;
 610         struct stat sb;
 611
 612         if (lstat(td->o.directory, &sb) < 0) {
 613                 int ret = errno;
 614
 615                 log_err("fio: %s is not a directory\n", td->o.directory);
 616                 td_verror(td, ret, "lstat");
 617                 return 1;
 618         }
 619         if (!S_ISDIR(sb.st_mode)) {
 620                 log_err("fio: %s is not a directory\n", td->o.directory);
 621                 return 1;
 622         }
 623
 624         return 0;
 625 }
 626
 627 static int str_opendir_cb(void *data, const char fio_unused *str)
 628 {
 629         struct thread_data *td = data;
 630
 631         if (!td->files_index)
 632                 td->o.nr_files = 0;
 633
 634         return add_dir_files(td, td->o.opendir);
 635 }
 636
 637 static int str_verify_offset_cb(void *data, unsigned long long *off)
 638 {
 639         struct thread_data *td = data;
 640
 641         if (*off && *off < sizeof(struct verify_header)) {
 642                 log_err("fio: verify_offset too small\n");
 643                 return 1;
 644         }
 645
 646         td->o.verify_offset = *off;
 647         return 0;
 648 }
 649
 650 static int str_verify_pattern_cb(void *data, const char *input)
 651 {
 652         struct thread_data *td = data;
 653         long off;
 654         int i = 0, j = 0, len, k, base = 10;
 655         char* loc1, * loc2;
 656
 657         loc1 = strstr(input, "0x");
 658         loc2 = strstr(input, "0X");
 659         if (loc1 || loc2)
 660                 base = 16;
 661         off = strtol(input, NULL, base);
 662         if (off != LONG_MAX || errno != ERANGE) {
 663                 while (off) {
 664                         td->o.verify_pattern[i] = off & 0xff;
 665                         off >>= 8;
 666                         i++;
 667                 }
 668         } else {
 669                 len = strlen(input);
 670                 k = len - 1;
 671                 if (base == 16) {
 672                         if (loc1)
 673                                 j = loc1 - input + 2;
 674                         else
 675                                 j = loc2 - input + 2;
 676                 } else
 677                         return 1;
 678                 if (len - j < MAX_PATTERN_SIZE * 2) {
 679                         while (k >= j) {
 680                                 off = converthexchartoint(input[k--]);
 681                                 if (k >= j)
 682                                         off += (converthexchartoint(input[k--])
 683                                                 * 16);
 684                                 td->o.verify_pattern[i++] = (char) off;
 685                         }
 686                 }
 687         }
 688
 689         /*
 690          * Fill the pattern all the way to the end. This greatly reduces
 691          * the number of memcpy's we have to do when verifying the IO.
 692          */
 693         while (i > 1 && i * 2 <= MAX_PATTERN_SIZE) {
 694                 memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
 695                 i *= 2;
 696         }
 697         if (i == 1) {
 698                 /*
 699                  * The code in verify_io_u_pattern assumes a single byte pattern
 700                  * fills the whole verify pattern buffer.
 701                  */
 702                 memset(td->o.verify_pattern, td->o.verify_pattern[0],
 703                        MAX_PATTERN_SIZE);
 704         }
 705
 706         td->o.verify_pattern_bytes = i;
 707
 708         /*
 709          * VERIFY_META could already be set
 710          */
 711         if (td->o.verify == VERIFY_NONE)
 712                 td->o.verify = VERIFY_PATTERN;
 713
 714         return 0;
 715 }
 716
 717 static int str_lockfile_cb(void *data, const char *str)
 718 {
 719         struct thread_data *td = data;
 720         char *nr = get_opt_postfix(str);
 721
 722         td->o.lockfile_batch = 1;
 723         if (nr) {
 724                 td->o.lockfile_batch = atoi(nr);
 725                 free(nr);
 726         }
 727
 728         return 0;
 729 }
 730
 731 static int str_write_bw_log_cb(void *data, const char *str)
 732 {
 733         struct thread_data *td = data;
 734
 735         if (str)
 736                 td->o.bw_log_file = strdup(str);
 737
 738         td->o.write_bw_log = 1;
 739         return 0;
 740 }
 741
 742 static int str_write_lat_log_cb(void *data, const char *str)
 743 {
 744         struct thread_data *td = data;
 745
 746         if (str)
 747                 td->o.lat_log_file = strdup(str);
 748
 749         td->o.write_lat_log = 1;
 750         return 0;
 751 }
 752
 753 static int str_write_iops_log_cb(void *data, const char *str)
 754 {
 755         struct thread_data *td = data;
 756
 757         if (str)
 758                 td->o.iops_log_file = strdup(str);
 759
 760         td->o.write_iops_log = 1;
 761         return 0;
 762 }
 763
 764 static int str_gtod_reduce_cb(void *data, int *il)
 765 {
 766         struct thread_data *td = data;
 767         int val = *il;
 768
 769         td->o.disable_lat = !!val;
 770         td->o.disable_clat = !!val;
 771         td->o.disable_slat = !!val;
 772         td->o.disable_bw = !!val;
 773         td->o.clat_percentiles = !val;
 774         if (val)
 775                 td->tv_cache_mask = 63;
 776
 777         return 0;
 778 }
 779
 780 static int str_gtod_cpu_cb(void *data, long long *il)
 781 {
 782         struct thread_data *td = data;
 783         int val = *il;
 784
 785         td->o.gtod_cpu = val;
 786         td->o.gtod_offload = 1;
 787         return 0;
 788 }
 789
 790 static int str_size_cb(void *data, unsigned long long *__val)
 791 {
 792         struct thread_data *td = data;
 793         unsigned long long v = *__val;
 794
 795         if (parse_is_percent(v)) {
 796                 td->o.size = 0;
 797                 td->o.size_percent = -1ULL - v;
 798         } else
 799                 td->o.size = v;
 800
 801         return 0;
 802 }
 803
 804 static int rw_verify(struct fio_option *o, void *data)
 805 {
 806         struct thread_data *td = data;
 807
 808         if (read_only && td_write(td)) {
 809                 log_err("fio: job <%s> has write bit set, but fio is in"
 810                         " read-only mode\n", td->o.name);
 811                 return 1;
 812         }
 813
 814         return 0;
 815 }
 816
 817 static int gtod_cpu_verify(struct fio_option *o, void *data)
 818 {
 819 #ifndef FIO_HAVE_CPU_AFFINITY
 820         struct thread_data *td = data;
 821
 822         if (td->o.gtod_cpu) {
 823                 log_err("fio: platform must support CPU affinity for"
 824                         "gettimeofday() offloading\n");
 825                 return 1;
 826         }
 827 #endif
 828
 829         return 0;
 830 }
 831
 832 static int kb_base_verify(struct fio_option *o, void *data)
 833 {
 834         struct thread_data *td = data;
 835
 836         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
 837                 log_err("fio: kb_base set to nonsensical value: %u\n",
 838                                 td->o.kb_base);
 839                 return 1;
 840         }
 841
 842         return 0;
 843 }
 844
 845 /*
 846  * Option grouping
 847  */
 848 static struct opt_group fio_opt_groups[] = {
 849         {
 850                 .name   = "Description",
 851                 .mask   = FIO_OPT_G_DESC,
 852         },
 853         {
 854                 .name   = "File",
 855                 .mask   = FIO_OPT_G_FILE,
 856         },
 857         {
 858                 .name   = "Misc",
 859                 .mask   = FIO_OPT_G_MISC,
 860         },
 861         {
 862                 .name   = "IO (main)",
 863                 .mask   = FIO_OPT_G_IO,
 864         },
 865         {
 866                 .name   = "IO direction",
 867                 .mask   = FIO_OPT_G_IO_DDIR,
 868         },
 869         {
 870                 .name   = "IO buffer",
 871                 .mask   = FIO_OPT_G_IO_BUF,
 872         },
 873         {
 874                 .name   = "IO engine",
 875                 .mask   = FIO_OPT_G_IO_ENG,
 876         },
 877         {
 878                 .name   = "Random",
 879                 .mask   = FIO_OPT_G_RAND,
 880         },
 881         {
 882                 .name   = "OS",
 883                 .mask   = FIO_OPT_G_OS,
 884         },
 885         {
 886                 .name   = "Memory",
 887                 .mask   = FIO_OPT_G_MEM,
 888         },
 889         {
 890                 .name   = "Verify",
 891                 .mask   = FIO_OPT_G_VERIFY,
 892         },
 893         {
 894                 .name   = "CPU",
 895                 .mask   = FIO_OPT_G_CPU,
 896         },
 897         {
 898                 .name   = "Log",
 899                 .mask   = FIO_OPT_G_LOG,
 900         },
 901         {
 902                 .name   = "Zone",
 903                 .mask   = FIO_OPT_G_ZONE,
 904         },
 905         {
 906                 .name   = "Cache",
 907                 .mask   = FIO_OPT_G_CACHE,
 908         },
 909         {
 910                 .name   = "Stat",
 911                 .mask   = FIO_OPT_G_STAT,
 912         },
 913         {
 914                 .name   = "Error",
 915                 .mask   = FIO_OPT_G_ERR,
 916         },
 917         {
 918                 .name   = "Job",
 919                 .mask   = FIO_OPT_G_JOB,
 920         },
 921         {
 922                 .name   = NULL,
 923         },
 924 };
 925
 926 struct opt_group *opt_group_from_mask(unsigned int *mask)
 927 {
 928         struct opt_group *og;
 929         int i;
 930
 931         if (*mask == FIO_OPT_G_INVALID)
 932                 return NULL;
 933
 934         for (i = 0; fio_opt_groups[i].name; i++) {
 935                 og = &fio_opt_groups[i];
 936
 937                 if (*mask & og->mask) {
 938                         *mask &= ~(og->mask);
 939                         return og;
 940                 }
 941         }
 942
 943         return NULL;
 944 }
 945
 946 /*
 947  * Map of job/command line options
 948  */
 949 struct fio_option fio_options[FIO_MAX_OPTS] = {
 950         {
 951                 .name   = "description",
 952                 .type   = FIO_OPT_STR_STORE,
 953                 .off1   = td_var_offset(description),
 954                 .help   = "Text job description",
 955                 .category = FIO_OPT_G_DESC,
 956         },
 957         {
 958                 .name   = "name",
 959                 .type   = FIO_OPT_STR_STORE,
 960                 .off1   = td_var_offset(name),
 961                 .help   = "Name of this job",
 962                 .category = FIO_OPT_G_DESC,
 963         },
 964         {
 965                 .name   = "directory",
 966                 .type   = FIO_OPT_STR_STORE,
 967                 .off1   = td_var_offset(directory),
 968                 .cb     = str_directory_cb,
 969                 .help   = "Directory to store files in",
 970                 .category = FIO_OPT_G_FILE,
 971         },
 972         {
 973                 .name   = "filename",
 974                 .type   = FIO_OPT_STR_STORE,
 975                 .off1   = td_var_offset(filename),
 976                 .cb     = str_filename_cb,
 977                 .prio   = -1, /* must come after "directory" */
 978                 .help   = "File(s) to use for the workload",
 979                 .category = FIO_OPT_G_FILE,
 980         },
 981         {
 982                 .name   = "kb_base",
 983                 .type   = FIO_OPT_INT,
 984                 .off1   = td_var_offset(kb_base),
 985                 .verify = kb_base_verify,
 986                 .prio   = 1,
 987                 .def    = "1024",
 988                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
 989                 .category = FIO_OPT_G_MISC,
 990         },
 991         {
 992                 .name   = "lockfile",
 993                 .type   = FIO_OPT_STR,
 994                 .cb     = str_lockfile_cb,
 995                 .off1   = td_var_offset(file_lock_mode),
 996                 .help   = "Lock file when doing IO to it",
 997                 .parent = "filename",
 998                 .hide   = 0,
 999                 .def    = "none",
1000                 .category = FIO_OPT_G_FILE,
1001                 .posval = {
1002                           { .ival = "none",
1003                             .oval = FILE_LOCK_NONE,
1004                             .help = "No file locking",
1005                           },
1006                           { .ival = "exclusive",
1007                             .oval = FILE_LOCK_EXCLUSIVE,
1008                             .help = "Exclusive file lock",
1009                           },
1010                           {
1011                             .ival = "readwrite",
1012                             .oval = FILE_LOCK_READWRITE,
1013                             .help = "Read vs write lock",
1014                           },
1015                 },
1016         },
1017         {
1018                 .name   = "opendir",
1019                 .type   = FIO_OPT_STR_STORE,
1020                 .off1   = td_var_offset(opendir),
1021                 .cb     = str_opendir_cb,
1022                 .help   = "Recursively add files from this directory and down",
1023                 .category = FIO_OPT_G_FILE,
1024         },
1025         {
1026                 .name   = "rw",
1027                 .alias  = "readwrite",
1028                 .type   = FIO_OPT_STR,
1029                 .cb     = str_rw_cb,
1030                 .off1   = td_var_offset(td_ddir),
1031                 .help   = "IO direction",
1032                 .def    = "read",
1033                 .verify = rw_verify,
1034                 .category = FIO_OPT_G_IO_DDIR,
1035                 .posval = {
1036                           { .ival = "read",
1037                             .oval = TD_DDIR_READ,
1038                             .help = "Sequential read",
1039                           },
1040                           { .ival = "write",
1041                             .oval = TD_DDIR_WRITE,
1042                             .help = "Sequential write",
1043                           },
1044                           { .ival = "randread",
1045                             .oval = TD_DDIR_RANDREAD,
1046                             .help = "Random read",
1047                           },
1048                           { .ival = "randwrite",
1049                             .oval = TD_DDIR_RANDWRITE,
1050                             .help = "Random write",
1051                           },
1052                           { .ival = "rw",
1053                             .oval = TD_DDIR_RW,
1054                             .help = "Sequential read and write mix",
1055                           },
1056                           { .ival = "randrw",
1057                             .oval = TD_DDIR_RANDRW,
1058                             .help = "Random read and write mix"
1059                           },
1060                 },
1061         },
1062         {
1063                 .name   = "rw_sequencer",
1064                 .type   = FIO_OPT_STR,
1065                 .off1   = td_var_offset(rw_seq),
1066                 .help   = "IO offset generator modifier",
1067                 .def    = "sequential",
1068                 .category = FIO_OPT_G_IO_DDIR,
1069                 .posval = {
1070                           { .ival = "sequential",
1071                             .oval = RW_SEQ_SEQ,
1072                             .help = "Generate sequential offsets",
1073                           },
1074                           { .ival = "identical",
1075                             .oval = RW_SEQ_IDENT,
1076                             .help = "Generate identical offsets",
1077                           },
1078                 },
1079         },
1080
1081         {
1082                 .name   = "ioengine",
1083                 .type   = FIO_OPT_STR_STORE,
1084                 .off1   = td_var_offset(ioengine),
1085                 .help   = "IO engine to use",
1086                 .def    = FIO_PREFERRED_ENGINE,
1087                 .category = FIO_OPT_G_IO,
1088                 .posval = {
1089                           { .ival = "sync",
1090                             .help = "Use read/write",
1091                           },
1092                           { .ival = "psync",
1093                             .help = "Use pread/pwrite",
1094                           },
1095                           { .ival = "vsync",
1096                             .help = "Use readv/writev",
1097                           },
1098 #ifdef FIO_HAVE_LIBAIO
1099                           { .ival = "libaio",
1100                             .help = "Linux native asynchronous IO",
1101                           },
1102 #endif
1103 #ifdef FIO_HAVE_POSIXAIO
1104                           { .ival = "posixaio",
1105                             .help = "POSIX asynchronous IO",
1106                           },
1107 #endif
1108 #ifdef FIO_HAVE_SOLARISAIO
1109                           { .ival = "solarisaio",
1110                             .help = "Solaris native asynchronous IO",
1111                           },
1112 #endif
1113 #ifdef FIO_HAVE_WINDOWSAIO
1114                           { .ival = "windowsaio",
1115                             .help = "Windows native asynchronous IO"
1116                           },
1117 #endif
1118                           { .ival = "mmap",
1119                             .help = "Memory mapped IO"
1120                           },
1121 #ifdef FIO_HAVE_SPLICE
1122                           { .ival = "splice",
1123                             .help = "splice/vmsplice based IO",
1124                           },
1125                           { .ival = "netsplice",
1126                             .help = "splice/vmsplice to/from the network",
1127                           },
1128 #endif
1129 #ifdef FIO_HAVE_SGIO
1130                           { .ival = "sg",
1131                             .help = "SCSI generic v3 IO",
1132                           },
1133 #endif
1134                           { .ival = "null",
1135                             .help = "Testing engine (no data transfer)",
1136                           },
1137                           { .ival = "net",
1138                             .help = "Network IO",
1139                           },
1140 #ifdef FIO_HAVE_SYSLET
1141                           { .ival = "syslet-rw",
1142                             .help = "syslet enabled async pread/pwrite IO",
1143                           },
1144 #endif
1145                           { .ival = "cpuio",
1146                             .help = "CPU cycle burner engine",
1147                           },
1148 #ifdef FIO_HAVE_GUASI
1149                           { .ival = "guasi",
1150                             .help = "GUASI IO engine",
1151                           },
1152 #endif
1153 #ifdef FIO_HAVE_BINJECT
1154                           { .ival = "binject",
1155                             .help = "binject direct inject block engine",
1156                           },
1157 #endif
1158 #ifdef FIO_HAVE_RDMA
1159                           { .ival = "rdma",
1160                             .help = "RDMA IO engine",
1161                           },
1162 #endif
1163                           { .ival = "external",
1164                             .help = "Load external engine (append name)",
1165                           },
1166                 },
1167         },
1168         {
1169                 .name   = "iodepth",
1170                 .type   = FIO_OPT_INT,
1171                 .off1   = td_var_offset(iodepth),
1172                 .help   = "Number of IO buffers to keep in flight",
1173                 .minval = 1,
1174                 .interval = 1,
1175                 .def    = "1",
1176                 .category = FIO_OPT_G_IO,
1177         },
1178         {
1179                 .name   = "iodepth_batch",
1180                 .alias  = "iodepth_batch_submit",
1181                 .type   = FIO_OPT_INT,
1182                 .off1   = td_var_offset(iodepth_batch),
1183                 .help   = "Number of IO buffers to submit in one go",
1184                 .parent = "iodepth",
1185                 .hide   = 1,
1186                 .minval = 1,
1187                 .interval = 1,
1188                 .def    = "1",
1189                 .category = FIO_OPT_G_IO,
1190         },
1191         {
1192                 .name   = "iodepth_batch_complete",
1193                 .type   = FIO_OPT_INT,
1194                 .off1   = td_var_offset(iodepth_batch_complete),
1195                 .help   = "Number of IO buffers to retrieve in one go",
1196                 .parent = "iodepth",
1197                 .hide   = 1,
1198                 .minval = 0,
1199                 .interval = 1,
1200                 .def    = "1",
1201                 .category = FIO_OPT_G_IO,
1202         },
1203         {
1204                 .name   = "iodepth_low",
1205                 .type   = FIO_OPT_INT,
1206                 .off1   = td_var_offset(iodepth_low),
1207                 .help   = "Low water mark for queuing depth",
1208                 .parent = "iodepth",
1209                 .hide   = 1,
1210                 .interval = 1,
1211                 .category = FIO_OPT_G_IO,
1212         },
1213         {
1214                 .name   = "size",
1215                 .type   = FIO_OPT_STR_VAL,
1216                 .cb     = str_size_cb,
1217                 .help   = "Total size of device or files",
1218                 .interval = 1024 * 1024,
1219                 .category = FIO_OPT_G_IO,
1220         },
1221         {
1222                 .name   = "fill_device",
1223                 .alias  = "fill_fs",
1224                 .type   = FIO_OPT_BOOL,
1225                 .off1   = td_var_offset(fill_device),
1226                 .help   = "Write until an ENOSPC error occurs",
1227                 .def    = "0",
1228                 .category = FIO_OPT_G_IO,
1229         },
1230         {
1231                 .name   = "filesize",
1232                 .type   = FIO_OPT_STR_VAL,
1233                 .off1   = td_var_offset(file_size_low),
1234                 .off2   = td_var_offset(file_size_high),
1235                 .minval = 1,
1236                 .help   = "Size of individual files",
1237                 .interval = 1024 * 1024,
1238                 .category = FIO_OPT_G_IO | FIO_OPT_G_FILE,
1239         },
1240         {
1241                 .name   = "offset",
1242                 .alias  = "fileoffset",
1243                 .type   = FIO_OPT_STR_VAL,
1244                 .off1   = td_var_offset(start_offset),
1245                 .help   = "Start IO from this offset",
1246                 .def    = "0",
1247                 .interval = 1024 * 1024,
1248                 .category = FIO_OPT_G_IO,
1249         },
1250         {
1251                 .name   = "offset_increment",
1252                 .type   = FIO_OPT_STR_VAL,
1253                 .off1   = td_var_offset(offset_increment),
1254                 .help   = "What is the increment from one offset to the next",
1255                 .parent = "offset",
1256                 .hide   = 1,
1257                 .def    = "0",
1258                 .interval = 1024 * 1024,
1259                 .category = FIO_OPT_G_IO,
1260         },
1261         {
1262                 .name   = "bs",
1263                 .alias  = "blocksize",
1264                 .type   = FIO_OPT_INT,
1265                 .off1   = td_var_offset(bs[DDIR_READ]),
1266                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1267                 .minval = 1,
1268                 .help   = "Block size unit",
1269                 .def    = "4k",
1270                 .parent = "rw",
1271                 .hide   = 1,
1272                 .interval = 512,
1273                 .category = FIO_OPT_G_IO,
1274         },
1275         {
1276                 .name   = "ba",
1277                 .alias  = "blockalign",
1278                 .type   = FIO_OPT_INT,
1279                 .off1   = td_var_offset(ba[DDIR_READ]),
1280                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1281                 .minval = 1,
1282                 .help   = "IO block offset alignment",
1283                 .parent = "rw",
1284                 .hide   = 1,
1285                 .interval = 512,
1286                 .category = FIO_OPT_G_IO | FIO_OPT_G_IO_BUF,
1287         },
1288         {
1289                 .name   = "bsrange",
1290                 .alias  = "blocksize_range",
1291                 .type   = FIO_OPT_RANGE,
1292                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1293                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1294                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1295                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1296                 .minval = 1,
1297                 .help   = "Set block size range (in more detail than bs)",
1298                 .parent = "rw",
1299                 .hide   = 1,
1300                 .interval = 4096,
1301                 .category = FIO_OPT_G_IO,
1302         },
1303         {
1304                 .name   = "bssplit",
1305                 .type   = FIO_OPT_STR,
1306                 .cb     = str_bssplit_cb,
1307                 .help   = "Set a specific mix of block sizes",
1308                 .parent = "rw",
1309                 .hide   = 1,
1310                 .category = FIO_OPT_G_IO,
1311         },
1312         {
1313                 .name   = "bs_unaligned",
1314                 .alias  = "blocksize_unaligned",
1315                 .type   = FIO_OPT_STR_SET,
1316                 .off1   = td_var_offset(bs_unaligned),
1317                 .help   = "Don't sector align IO buffer sizes",
1318                 .parent = "rw",
1319                 .hide   = 1,
1320                 .category = FIO_OPT_G_IO,
1321         },
1322         {
1323                 .name   = "randrepeat",
1324                 .type   = FIO_OPT_BOOL,
1325                 .off1   = td_var_offset(rand_repeatable),
1326                 .help   = "Use repeatable random IO pattern",
1327                 .def    = "1",
1328                 .parent = "rw",
1329                 .hide   = 1,
1330                 .category = FIO_OPT_G_IO | FIO_OPT_G_RAND,
1331         },
1332         {
1333                 .name   = "use_os_rand",
1334                 .type   = FIO_OPT_BOOL,
1335                 .off1   = td_var_offset(use_os_rand),
1336                 .help   = "Set to use OS random generator",
1337                 .def    = "0",
1338                 .parent = "rw",
1339                 .hide   = 1,
1340                 .category = FIO_OPT_G_RAND,
1341         },
1342         {
1343                 .name   = "norandommap",
1344                 .type   = FIO_OPT_STR_SET,
1345                 .off1   = td_var_offset(norandommap),
1346                 .help   = "Accept potential duplicate random blocks",
1347                 .parent = "rw",
1348                 .hide   = 1,
1349                 .category = FIO_OPT_G_RAND,
1350         },
1351         {
1352                 .name   = "softrandommap",
1353                 .type   = FIO_OPT_BOOL,
1354                 .off1   = td_var_offset(softrandommap),
1355                 .help   = "Set norandommap if randommap allocation fails",
1356                 .parent = "norandommap",
1357                 .hide   = 1,
1358                 .def    = "0",
1359                 .category = FIO_OPT_G_RAND,
1360         },
1361         {
1362                 .name   = "nrfiles",
1363                 .alias  = "nr_files",
1364                 .type   = FIO_OPT_INT,
1365                 .off1   = td_var_offset(nr_files),
1366                 .help   = "Split job workload between this number of files",
1367                 .def    = "1",
1368                 .interval = 1,
1369                 .category = FIO_OPT_G_FILE,
1370         },
1371         {
1372                 .name   = "openfiles",
1373                 .type   = FIO_OPT_INT,
1374                 .off1   = td_var_offset(open_files),
1375                 .help   = "Number of files to keep open at the same time",
1376                 .category = FIO_OPT_G_FILE,
1377         },
1378         {
1379                 .name   = "file_service_type",
1380                 .type   = FIO_OPT_STR,
1381                 .cb     = str_fst_cb,
1382                 .off1   = td_var_offset(file_service_type),
1383                 .help   = "How to select which file to service next",
1384                 .def    = "roundrobin",
1385                 .category = FIO_OPT_G_FILE,
1386                 .posval = {
1387                           { .ival = "random",
1388                             .oval = FIO_FSERVICE_RANDOM,
1389                             .help = "Choose a file at random",
1390                           },
1391                           { .ival = "roundrobin",
1392                             .oval = FIO_FSERVICE_RR,
1393                             .help = "Round robin select files",
1394                           },
1395                           { .ival = "sequential",
1396                             .oval = FIO_FSERVICE_SEQ,
1397                             .help = "Finish one file before moving to the next",
1398                           },
1399                 },
1400                 .parent = "nrfiles",
1401                 .hide   = 1,
1402         },
1403 #ifdef FIO_HAVE_FALLOCATE
1404         {
1405                 .name   = "fallocate",
1406                 .type   = FIO_OPT_STR,
1407                 .off1   = td_var_offset(fallocate_mode),
1408                 .help   = "Whether pre-allocation is performed when laying out files",
1409                 .def    = "posix",
1410                 .category = FIO_OPT_G_FILE,
1411                 .posval = {
1412                           { .ival = "none",
1413                             .oval = FIO_FALLOCATE_NONE,
1414                             .help = "Do not pre-allocate space",
1415                           },
1416                           { .ival = "posix",
1417                             .oval = FIO_FALLOCATE_POSIX,
1418                             .help = "Use posix_fallocate()",
1419                           },
1420 #ifdef FIO_HAVE_LINUX_FALLOCATE
1421                           { .ival = "keep",
1422                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1423                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1424                           },
1425 #endif
1426                           /* Compatibility with former boolean values */
1427                           { .ival = "0",
1428                             .oval = FIO_FALLOCATE_NONE,
1429                             .help = "Alias for 'none'",
1430                           },
1431                           { .ival = "1",
1432                             .oval = FIO_FALLOCATE_POSIX,
1433                             .help = "Alias for 'posix'",
1434                           },
1435                 },
1436         },
1437 #endif  /* FIO_HAVE_FALLOCATE */
1438         {
1439                 .name   = "fadvise_hint",
1440                 .type   = FIO_OPT_BOOL,
1441                 .off1   = td_var_offset(fadvise_hint),
1442                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1443                 .def    = "1",
1444                 .category = FIO_OPT_G_FILE,
1445         },
1446         {
1447                 .name   = "fsync",
1448                 .type   = FIO_OPT_INT,
1449                 .off1   = td_var_offset(fsync_blocks),
1450                 .help   = "Issue fsync for writes every given number of blocks",
1451                 .def    = "0",
1452                 .interval = 1,
1453                 .category = FIO_OPT_G_FILE,
1454         },
1455         {
1456                 .name   = "fdatasync",
1457                 .type   = FIO_OPT_INT,
1458                 .off1   = td_var_offset(fdatasync_blocks),
1459                 .help   = "Issue fdatasync for writes every given number of blocks",
1460                 .def    = "0",
1461                 .interval = 1,
1462                 .category = FIO_OPT_G_FILE,
1463         },
1464         {
1465                 .name   = "write_barrier",
1466                 .type   = FIO_OPT_INT,
1467                 .off1   = td_var_offset(barrier_blocks),
1468                 .help   = "Make every Nth write a barrier write",
1469                 .def    = "0",
1470                 .interval = 1,
1471                 .category = FIO_OPT_G_IO,
1472         },
1473 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1474         {
1475                 .name   = "sync_file_range",
1476                 .posval = {
1477                           { .ival = "wait_before",
1478                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1479                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1480                             .or   = 1,
1481                           },
1482                           { .ival = "write",
1483                             .oval = SYNC_FILE_RANGE_WRITE,
1484                             .help = "SYNC_FILE_RANGE_WRITE",
1485                             .or   = 1,
1486                           },
1487                           {
1488                             .ival = "wait_after",
1489                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1490                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1491                             .or   = 1,
1492                           },
1493                 },
1494                 .type   = FIO_OPT_STR_MULTI,
1495                 .cb     = str_sfr_cb,
1496                 .off1   = td_var_offset(sync_file_range),
1497                 .help   = "Use sync_file_range()",
1498                 .category = FIO_OPT_G_FILE,
1499         },
1500 #endif
1501         {
1502                 .name   = "direct",
1503                 .type   = FIO_OPT_BOOL,
1504                 .off1   = td_var_offset(odirect),
1505                 .help   = "Use O_DIRECT IO (negates buffered)",
1506                 .def    = "0",
1507                 .category = FIO_OPT_G_IO,
1508         },
1509         {
1510                 .name   = "buffered",
1511                 .type   = FIO_OPT_BOOL,
1512                 .off1   = td_var_offset(odirect),
1513                 .neg    = 1,
1514                 .help   = "Use buffered IO (negates direct)",
1515                 .def    = "1",
1516                 .category = FIO_OPT_G_IO,
1517         },
1518         {
1519                 .name   = "overwrite",
1520                 .type   = FIO_OPT_BOOL,
1521                 .off1   = td_var_offset(overwrite),
1522                 .help   = "When writing, set whether to overwrite current data",
1523                 .def    = "0",
1524                 .category = FIO_OPT_G_IO | FIO_OPT_G_FILE,
1525         },
1526         {
1527                 .name   = "loops",
1528                 .type   = FIO_OPT_INT,
1529                 .off1   = td_var_offset(loops),
1530                 .help   = "Number of times to run the job",
1531                 .def    = "1",
1532                 .interval = 1,
1533                 .category = FIO_OPT_G_MISC,
1534         },
1535         {
1536                 .name   = "numjobs",
1537                 .type   = FIO_OPT_INT,
1538                 .off1   = td_var_offset(numjobs),
1539                 .help   = "Duplicate this job this many times",
1540                 .def    = "1",
1541                 .interval = 1,
1542                 .category = FIO_OPT_G_MISC,
1543         },
1544         {
1545                 .name   = "startdelay",
1546                 .type   = FIO_OPT_STR_VAL_TIME,
1547                 .off1   = td_var_offset(start_delay),
1548                 .help   = "Only start job when this period has passed",
1549                 .def    = "0",
1550                 .category = FIO_OPT_G_MISC,
1551         },
1552         {
1553                 .name   = "runtime",
1554                 .alias  = "timeout",
1555                 .type   = FIO_OPT_STR_VAL_TIME,
1556                 .off1   = td_var_offset(timeout),
1557                 .help   = "Stop workload when this amount of time has passed",
1558                 .def    = "0",
1559                 .category = FIO_OPT_G_MISC,
1560         },
1561         {
1562                 .name   = "time_based",
1563                 .type   = FIO_OPT_STR_SET,
1564                 .off1   = td_var_offset(time_based),
1565                 .help   = "Keep running until runtime/timeout is met",
1566                 .category = FIO_OPT_G_MISC,
1567         },
1568         {
1569                 .name   = "ramp_time",
1570                 .type   = FIO_OPT_STR_VAL_TIME,
1571                 .off1   = td_var_offset(ramp_time),
1572                 .help   = "Ramp up time before measuring performance",
1573                 .category = FIO_OPT_G_MISC,
1574         },
1575         {
1576                 .name   = "clocksource",
1577                 .type   = FIO_OPT_STR,
1578                 .cb     = fio_clock_source_cb,
1579                 .off1   = td_var_offset(clocksource),
1580                 .help   = "What type of timing source to use",
1581                 .category = FIO_OPT_G_OS,
1582                 .posval = {
1583                           { .ival = "gettimeofday",
1584                             .oval = CS_GTOD,
1585                             .help = "Use gettimeofday(2) for timing",
1586                           },
1587                           { .ival = "clock_gettime",
1588                             .oval = CS_CGETTIME,
1589                             .help = "Use clock_gettime(2) for timing",
1590                           },
1591 #ifdef ARCH_HAVE_CPU_CLOCK
1592                           { .ival = "cpu",
1593                             .oval = CS_CPUCLOCK,
1594                             .help = "Use CPU private clock",
1595                           },
1596 #endif
1597                 },
1598         },
1599         {
1600                 .name   = "mem",
1601                 .alias  = "iomem",
1602                 .type   = FIO_OPT_STR,
1603                 .cb     = str_mem_cb,
1604                 .off1   = td_var_offset(mem_type),
1605                 .help   = "Backing type for IO buffers",
1606                 .def    = "malloc",
1607                 .category = FIO_OPT_G_IO_BUF | FIO_OPT_G_MEM,
1608                 .posval = {
1609                           { .ival = "malloc",
1610                             .oval = MEM_MALLOC,
1611                             .help = "Use malloc(3) for IO buffers",
1612                           },
1613                           { .ival = "shm",
1614                             .oval = MEM_SHM,
1615                             .help = "Use shared memory segments for IO buffers",
1616                           },
1617 #ifdef FIO_HAVE_HUGETLB
1618                           { .ival = "shmhuge",
1619                             .oval = MEM_SHMHUGE,
1620                             .help = "Like shm, but use huge pages",
1621                           },
1622 #endif
1623                           { .ival = "mmap",
1624                             .oval = MEM_MMAP,
1625                             .help = "Use mmap(2) (file or anon) for IO buffers",
1626                           },
1627 #ifdef FIO_HAVE_HUGETLB
1628                           { .ival = "mmaphuge",
1629                             .oval = MEM_MMAPHUGE,
1630                             .help = "Like mmap, but use huge pages",
1631                           },
1632 #endif
1633                   },
1634         },
1635         {
1636                 .name   = "iomem_align",
1637                 .alias  = "mem_align",
1638                 .type   = FIO_OPT_INT,
1639                 .off1   = td_var_offset(mem_align),
1640                 .minval = 0,
1641                 .help   = "IO memory buffer offset alignment",
1642                 .def    = "0",
1643                 .parent = "iomem",
1644                 .hide   = 1,
1645                 .category = FIO_OPT_G_IO_BUF | FIO_OPT_G_MEM,
1646         },
1647         {
1648                 .name   = "verify",
1649                 .type   = FIO_OPT_STR,
1650                 .off1   = td_var_offset(verify),
1651                 .help   = "Verify data written",
1652                 .cb     = str_verify_cb,
1653                 .def    = "0",
1654                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1655                 .posval = {
1656                           { .ival = "0",
1657                             .oval = VERIFY_NONE,
1658                             .help = "Don't do IO verification",
1659                           },
1660                           { .ival = "md5",
1661                             .oval = VERIFY_MD5,
1662                             .help = "Use md5 checksums for verification",
1663                           },
1664                           { .ival = "crc64",
1665                             .oval = VERIFY_CRC64,
1666                             .help = "Use crc64 checksums for verification",
1667                           },
1668                           { .ival = "crc32",
1669                             .oval = VERIFY_CRC32,
1670                             .help = "Use crc32 checksums for verification",
1671                           },
1672                           { .ival = "crc32c-intel",
1673                             .oval = VERIFY_CRC32C,
1674                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1675                           },
1676                           { .ival = "crc32c",
1677                             .oval = VERIFY_CRC32C,
1678                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1679                           },
1680                           { .ival = "crc16",
1681                             .oval = VERIFY_CRC16,
1682                             .help = "Use crc16 checksums for verification",
1683                           },
1684                           { .ival = "crc7",
1685                             .oval = VERIFY_CRC7,
1686                             .help = "Use crc7 checksums for verification",
1687                           },
1688                           { .ival = "sha1",
1689                             .oval = VERIFY_SHA1,
1690                             .help = "Use sha1 checksums for verification",
1691                           },
1692                           { .ival = "sha256",
1693                             .oval = VERIFY_SHA256,
1694                             .help = "Use sha256 checksums for verification",
1695                           },
1696                           { .ival = "sha512",
1697                             .oval = VERIFY_SHA512,
1698                             .help = "Use sha512 checksums for verification",
1699                           },
1700                           { .ival = "meta",
1701                             .oval = VERIFY_META,
1702                             .help = "Use io information",
1703                           },
1704                           {
1705                             .ival = "null",
1706                             .oval = VERIFY_NULL,
1707                             .help = "Pretend to verify",
1708                           },
1709                 },
1710         },
1711         {
1712                 .name   = "do_verify",
1713                 .type   = FIO_OPT_BOOL,
1714                 .off1   = td_var_offset(do_verify),
1715                 .help   = "Run verification stage after write",
1716                 .def    = "1",
1717                 .parent = "verify",
1718                 .hide   = 1,
1719                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1720         },
1721         {
1722                 .name   = "verifysort",
1723                 .type   = FIO_OPT_BOOL,
1724                 .off1   = td_var_offset(verifysort),
1725                 .help   = "Sort written verify blocks for read back",
1726                 .def    = "1",
1727                 .parent = "verify",
1728                 .hide   = 1,
1729                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1730         },
1731         {
1732                 .name   = "verify_interval",
1733                 .type   = FIO_OPT_INT,
1734                 .off1   = td_var_offset(verify_interval),
1735                 .minval = 2 * sizeof(struct verify_header),
1736                 .help   = "Store verify buffer header every N bytes",
1737                 .parent = "verify",
1738                 .hide   = 1,
1739                 .interval = 2 * sizeof(struct verify_header),
1740                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1741         },
1742         {
1743                 .name   = "verify_offset",
1744                 .type   = FIO_OPT_INT,
1745                 .help   = "Offset verify header location by N bytes",
1746                 .def    = "0",
1747                 .cb     = str_verify_offset_cb,
1748                 .parent = "verify",
1749                 .hide   = 1,
1750                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1751         },
1752         {
1753                 .name   = "verify_pattern",
1754                 .type   = FIO_OPT_STR,
1755                 .cb     = str_verify_pattern_cb,
1756                 .help   = "Fill pattern for IO buffers",
1757                 .parent = "verify",
1758                 .hide   = 1,
1759                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1760         },
1761         {
1762                 .name   = "verify_fatal",
1763                 .type   = FIO_OPT_BOOL,
1764                 .off1   = td_var_offset(verify_fatal),
1765                 .def    = "0",
1766                 .help   = "Exit on a single verify failure, don't continue",
1767                 .parent = "verify",
1768                 .hide   = 1,
1769                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY | FIO_OPT_G_ERR,
1770         },
1771         {
1772                 .name   = "verify_dump",
1773                 .type   = FIO_OPT_BOOL,
1774                 .off1   = td_var_offset(verify_dump),
1775                 .def    = "0",
1776                 .help   = "Dump contents of good and bad blocks on failure",
1777                 .parent = "verify",
1778                 .hide   = 1,
1779                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY | FIO_OPT_G_ERR,
1780         },
1781         {
1782                 .name   = "verify_async",
1783                 .type   = FIO_OPT_INT,
1784                 .off1   = td_var_offset(verify_async),
1785                 .def    = "0",
1786                 .help   = "Number of async verifier threads to use",
1787                 .parent = "verify",
1788                 .hide   = 1,
1789                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1790         },
1791         {
1792                 .name   = "verify_backlog",
1793                 .type   = FIO_OPT_STR_VAL,
1794                 .off1   = td_var_offset(verify_backlog),
1795                 .help   = "Verify after this number of blocks are written",
1796                 .parent = "verify",
1797                 .hide   = 1,
1798                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1799         },
1800         {
1801                 .name   = "verify_backlog_batch",
1802                 .type   = FIO_OPT_INT,
1803                 .off1   = td_var_offset(verify_batch),
1804                 .help   = "Verify this number of IO blocks",
1805                 .parent = "verify",
1806                 .hide   = 1,
1807                 .category = FIO_OPT_G_IO | FIO_OPT_G_VERIFY,
1808         },
1809 #ifdef FIO_HAVE_CPU_AFFINITY
1810         {
1811                 .name   = "verify_async_cpus",
1812                 .type   = FIO_OPT_STR,
1813                 .cb     = str_verify_cpus_allowed_cb,
1814                 .help   = "Set CPUs allowed for async verify threads",
1815                 .parent = "verify_async",
1816                 .hide   = 1,
1817                 .category = FIO_OPT_G_OS | FIO_OPT_G_CPU | FIO_OPT_G_VERIFY,
1818         },
1819 #endif
1820 #ifdef FIO_HAVE_TRIM
1821         {
1822                 .name   = "trim_percentage",
1823                 .type   = FIO_OPT_INT,
1824                 .cb     = str_verify_trim_cb,
1825                 .minval = 0,
1826                 .maxval = 100,
1827                 .help   = "Number of verify blocks to discard/trim",
1828                 .parent = "verify",
1829                 .def    = "0",
1830                 .interval = 1,
1831                 .hide   = 1,
1832                 .category = FIO_OPT_G_IO,
1833         },
1834         {
1835                 .name   = "trim_verify_zero",
1836                 .type   = FIO_OPT_BOOL,
1837                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1838                 .off1   = td_var_offset(trim_zero),
1839                 .parent = "trim_percentage",
1840                 .hide   = 1,
1841                 .def    = "1",
1842                 .category = FIO_OPT_G_IO,
1843         },
1844         {
1845                 .name   = "trim_backlog",
1846                 .type   = FIO_OPT_STR_VAL,
1847                 .off1   = td_var_offset(trim_backlog),
1848                 .help   = "Trim after this number of blocks are written",
1849                 .parent = "trim_percentage",
1850                 .hide   = 1,
1851                 .interval = 1,
1852                 .category = FIO_OPT_G_IO,
1853         },
1854         {
1855                 .name   = "trim_backlog_batch",
1856                 .type   = FIO_OPT_INT,
1857                 .off1   = td_var_offset(trim_batch),
1858                 .help   = "Trim this number of IO blocks",
1859                 .parent = "trim_percentage",
1860                 .hide   = 1,
1861                 .interval = 1,
1862                 .category = FIO_OPT_G_IO,
1863         },
1864 #endif
1865         {
1866                 .name   = "write_iolog",
1867                 .type   = FIO_OPT_STR_STORE,
1868                 .off1   = td_var_offset(write_iolog_file),
1869                 .help   = "Store IO pattern to file",
1870                 .category = FIO_OPT_G_IO | FIO_OPT_G_LOG,
1871         },
1872         {
1873                 .name   = "read_iolog",
1874                 .type   = FIO_OPT_STR_STORE,
1875                 .off1   = td_var_offset(read_iolog_file),
1876                 .help   = "Playback IO pattern from file",
1877                 .category = FIO_OPT_G_IO | FIO_OPT_G_LOG,
1878         },
1879         {
1880                 .name   = "replay_no_stall",
1881                 .type   = FIO_OPT_BOOL,
1882                 .off1   = td_var_offset(no_stall),
1883                 .def    = "0",
1884                 .parent = "read_iolog",
1885                 .hide   = 1,
1886                 .help   = "Playback IO pattern file as fast as possible without stalls",
1887                 .category = FIO_OPT_G_IO | FIO_OPT_G_LOG,
1888         },
1889         {
1890                 .name   = "replay_redirect",
1891                 .type   = FIO_OPT_STR_STORE,
1892                 .off1   = td_var_offset(replay_redirect),
1893                 .parent = "read_iolog",
1894                 .hide   = 1,
1895                 .help   = "Replay all I/O onto this device, regardless of trace device",
1896                 .category = FIO_OPT_G_IO | FIO_OPT_G_LOG,
1897         },
1898         {
1899                 .name   = "exec_prerun",
1900                 .type   = FIO_OPT_STR_STORE,
1901                 .off1   = td_var_offset(exec_prerun),
1902                 .help   = "Execute this file prior to running job",
1903                 .category = FIO_OPT_G_MISC | FIO_OPT_G_OS,
1904         },
1905         {
1906                 .name   = "exec_postrun",
1907                 .type   = FIO_OPT_STR_STORE,
1908                 .off1   = td_var_offset(exec_postrun),
1909                 .help   = "Execute this file after running job",
1910                 .category = FIO_OPT_G_MISC | FIO_OPT_G_OS,
1911         },
1912 #ifdef FIO_HAVE_IOSCHED_SWITCH
1913         {
1914                 .name   = "ioscheduler",
1915                 .type   = FIO_OPT_STR_STORE,
1916                 .off1   = td_var_offset(ioscheduler),
1917                 .help   = "Use this IO scheduler on the backing device",
1918                 .category = FIO_OPT_G_OS | FIO_OPT_G_IO,
1919         },
1920 #endif
1921         {
1922                 .name   = "zonesize",
1923                 .type   = FIO_OPT_STR_VAL,
1924                 .off1   = td_var_offset(zone_size),
1925                 .help   = "Amount of data to read per zone",
1926                 .def    = "0",
1927                 .interval = 1024 * 1024,
1928                 .category = FIO_OPT_G_IO | FIO_OPT_G_ZONE,
1929         },
1930         {
1931                 .name   = "zonerange",
1932                 .type   = FIO_OPT_STR_VAL,
1933                 .off1   = td_var_offset(zone_range),
1934                 .help   = "Give size of an IO zone",
1935                 .def    = "0",
1936                 .interval = 1024 * 1024,
1937                 .category = FIO_OPT_G_IO | FIO_OPT_G_ZONE,
1938         },
1939         {
1940                 .name   = "zoneskip",
1941                 .type   = FIO_OPT_STR_VAL,
1942                 .off1   = td_var_offset(zone_skip),
1943                 .help   = "Space between IO zones",
1944                 .def    = "0",
1945                 .interval = 1024 * 1024,
1946                 .category = FIO_OPT_G_IO | FIO_OPT_G_ZONE,
1947         },
1948         {
1949                 .name   = "lockmem",
1950                 .type   = FIO_OPT_STR_VAL,
1951                 .cb     = str_lockmem_cb,
1952                 .help   = "Lock down this amount of memory",
1953                 .def    = "0",
1954                 .interval = 1024 * 1024,
1955                 .category = FIO_OPT_G_OS | FIO_OPT_G_MEM,
1956         },
1957         {
1958                 .name   = "rwmixread",
1959                 .type   = FIO_OPT_INT,
1960                 .cb     = str_rwmix_read_cb,
1961                 .maxval = 100,
1962                 .help   = "Percentage of mixed workload that is reads",
1963                 .def    = "50",
1964                 .interval = 5,
1965                 .category = FIO_OPT_G_IO,
1966         },
1967         {
1968                 .name   = "rwmixwrite",
1969                 .type   = FIO_OPT_INT,
1970                 .cb     = str_rwmix_write_cb,
1971                 .maxval = 100,
1972                 .help   = "Percentage of mixed workload that is writes",
1973                 .def    = "50",
1974                 .interval = 5,
1975                 .category = FIO_OPT_G_IO,
1976         },
1977         {
1978                 .name   = "rwmixcycle",
1979                 .type   = FIO_OPT_DEPRECATED,
1980                 .category = FIO_OPT_G_IO,
1981         },
1982         {
1983                 .name   = "nice",
1984                 .type   = FIO_OPT_INT,
1985                 .off1   = td_var_offset(nice),
1986                 .help   = "Set job CPU nice value",
1987                 .minval = -19,
1988                 .maxval = 20,
1989                 .def    = "0",
1990                 .interval = 1,
1991                 .category = FIO_OPT_G_OS | FIO_OPT_G_CPU,
1992         },
1993 #ifdef FIO_HAVE_IOPRIO
1994         {
1995                 .name   = "prio",
1996                 .type   = FIO_OPT_INT,
1997                 .cb     = str_prio_cb,
1998                 .help   = "Set job IO priority value",
1999                 .minval = 0,
2000                 .maxval = 7,
2001                 .interval = 1,
2002                 .category = FIO_OPT_G_OS | FIO_OPT_G_CPU,
2003         },
2004         {
2005                 .name   = "prioclass",
2006                 .type   = FIO_OPT_INT,
2007                 .cb     = str_prioclass_cb,
2008                 .help   = "Set job IO priority class",
2009                 .minval = 0,
2010                 .maxval = 3,
2011                 .interval = 1,
2012                 .category = FIO_OPT_G_OS | FIO_OPT_G_CPU,
2013         },
2014 #endif
2015         {
2016                 .name   = "thinktime",
2017                 .type   = FIO_OPT_INT,
2018                 .off1   = td_var_offset(thinktime),
2019                 .help   = "Idle time between IO buffers (usec)",
2020                 .def    = "0",
2021                 .category = FIO_OPT_G_MISC,
2022         },
2023         {
2024                 .name   = "thinktime_spin",
2025                 .type   = FIO_OPT_INT,
2026                 .off1   = td_var_offset(thinktime_spin),
2027                 .help   = "Start think time by spinning this amount (usec)",
2028                 .def    = "0",
2029                 .parent = "thinktime",
2030                 .hide   = 1,
2031                 .category = FIO_OPT_G_MISC,
2032         },
2033         {
2034                 .name   = "thinktime_blocks",
2035                 .type   = FIO_OPT_INT,
2036                 .off1   = td_var_offset(thinktime_blocks),
2037                 .help   = "IO buffer period between 'thinktime'",
2038                 .def    = "1",
2039                 .parent = "thinktime",
2040                 .hide   = 1,
2041                 .category = FIO_OPT_G_MISC,
2042         },
2043         {
2044                 .name   = "rate",
2045                 .type   = FIO_OPT_INT,
2046                 .off1   = td_var_offset(rate[0]),
2047                 .off2   = td_var_offset(rate[1]),
2048                 .help   = "Set bandwidth rate",
2049                 .category = FIO_OPT_G_IO,
2050         },
2051         {
2052                 .name   = "ratemin",
2053                 .type   = FIO_OPT_INT,
2054                 .off1   = td_var_offset(ratemin[0]),
2055                 .off2   = td_var_offset(ratemin[1]),
2056                 .help   = "Job must meet this rate or it will be shutdown",
2057                 .parent = "rate",
2058                 .hide   = 1,
2059                 .category = FIO_OPT_G_IO,
2060         },
2061         {
2062                 .name   = "rate_iops",
2063                 .type   = FIO_OPT_INT,
2064                 .off1   = td_var_offset(rate_iops[0]),
2065                 .off2   = td_var_offset(rate_iops[1]),
2066                 .help   = "Limit IO used to this number of IO operations/sec",
2067                 .hide   = 1,
2068                 .category = FIO_OPT_G_IO,
2069         },
2070         {
2071                 .name   = "rate_iops_min",
2072                 .type   = FIO_OPT_INT,
2073                 .off1   = td_var_offset(rate_iops_min[0]),
2074                 .off2   = td_var_offset(rate_iops_min[1]),
2075                 .help   = "Job must meet this rate or it will be shut down",
2076                 .parent = "rate_iops",
2077                 .hide   = 1,
2078                 .category = FIO_OPT_G_IO,
2079         },
2080         {
2081                 .name   = "ratecycle",
2082                 .type   = FIO_OPT_INT,
2083                 .off1   = td_var_offset(ratecycle),
2084                 .help   = "Window average for rate limits (msec)",
2085                 .def    = "1000",
2086                 .parent = "rate",
2087                 .hide   = 1,
2088                 .category = FIO_OPT_G_IO,
2089         },
2090         {
2091                 .name   = "invalidate",
2092                 .type   = FIO_OPT_BOOL,
2093                 .off1   = td_var_offset(invalidate_cache),
2094                 .help   = "Invalidate buffer/page cache prior to running job",
2095                 .def    = "1",
2096                 .category = FIO_OPT_G_IO | FIO_OPT_G_CACHE,
2097         },
2098         {
2099                 .name   = "sync",
2100                 .type   = FIO_OPT_BOOL,
2101                 .off1   = td_var_offset(sync_io),
2102                 .help   = "Use O_SYNC for buffered writes",
2103                 .def    = "0",
2104                 .parent = "buffered",
2105                 .hide   = 1,
2106                 .category = FIO_OPT_G_IO | FIO_OPT_G_FILE,
2107         },
2108         {
2109                 .name   = "bwavgtime",
2110                 .type   = FIO_OPT_INT,
2111                 .off1   = td_var_offset(bw_avg_time),
2112                 .help   = "Time window over which to calculate bandwidth"
2113                           " (msec)",
2114                 .def    = "500",
2115                 .parent = "write_bw_log",
2116                 .hide   = 1,
2117                 .interval = 100,
2118                 .category = FIO_OPT_G_LOG | FIO_OPT_G_STAT,
2119         },
2120         {
2121                 .name   = "iopsavgtime",
2122                 .type   = FIO_OPT_INT,
2123                 .off1   = td_var_offset(iops_avg_time),
2124                 .help   = "Time window over which to calculate IOPS (msec)",
2125                 .def    = "500",
2126                 .parent = "write_iops_log",
2127                 .hide   = 1,
2128                 .interval = 100,
2129                 .category = FIO_OPT_G_LOG | FIO_OPT_G_STAT,
2130         },
2131         {
2132                 .name   = "create_serialize",
2133                 .type   = FIO_OPT_BOOL,
2134                 .off1   = td_var_offset(create_serialize),
2135                 .help   = "Serialize creating of job files",
2136                 .def    = "1",
2137                 .category = FIO_OPT_G_FILE,
2138         },
2139         {
2140                 .name   = "create_fsync",
2141                 .type   = FIO_OPT_BOOL,
2142                 .off1   = td_var_offset(create_fsync),
2143                 .help   = "fsync file after creation",
2144                 .def    = "1",
2145                 .category = FIO_OPT_G_FILE,
2146         },
2147         {
2148                 .name   = "create_on_open",
2149                 .type   = FIO_OPT_BOOL,
2150                 .off1   = td_var_offset(create_on_open),
2151                 .help   = "Create files when they are opened for IO",
2152                 .def    = "0",
2153                 .category = FIO_OPT_G_FILE,
2154         },
2155         {
2156                 .name   = "pre_read",
2157                 .type   = FIO_OPT_BOOL,
2158                 .off1   = td_var_offset(pre_read),
2159                 .help   = "Pre-read files before starting official testing",
2160                 .def    = "0",
2161                 .category = FIO_OPT_G_FILE | FIO_OPT_G_CACHE,
2162         },
2163         {
2164                 .name   = "cpuload",
2165                 .type   = FIO_OPT_INT,
2166                 .off1   = td_var_offset(cpuload),
2167                 .help   = "Use this percentage of CPU",
2168                 .category = FIO_OPT_G_CPU,
2169         },
2170         {
2171                 .name   = "cpuchunks",
2172                 .type   = FIO_OPT_INT,
2173                 .off1   = td_var_offset(cpucycle),
2174                 .help   = "Length of the CPU burn cycles (usecs)",
2175                 .def    = "50000",
2176                 .parent = "cpuload",
2177                 .hide   = 1,
2178                 .category = FIO_OPT_G_CPU,
2179         },
2180 #ifdef FIO_HAVE_CPU_AFFINITY
2181         {
2182                 .name   = "cpumask",
2183                 .type   = FIO_OPT_INT,
2184                 .cb     = str_cpumask_cb,
2185                 .help   = "CPU affinity mask",
2186                 .category = FIO_OPT_G_CPU | FIO_OPT_G_OS,
2187         },
2188         {
2189                 .name   = "cpus_allowed",
2190                 .type   = FIO_OPT_STR,
2191                 .cb     = str_cpus_allowed_cb,
2192                 .help   = "Set CPUs allowed",
2193                 .category = FIO_OPT_G_CPU | FIO_OPT_G_OS,
2194         },
2195 #endif
2196         {
2197                 .name   = "end_fsync",
2198                 .type   = FIO_OPT_BOOL,
2199                 .off1   = td_var_offset(end_fsync),
2200                 .help   = "Include fsync at the end of job",
2201                 .def    = "0",
2202                 .category = FIO_OPT_G_FILE,
2203         },
2204         {
2205                 .name   = "fsync_on_close",
2206                 .type   = FIO_OPT_BOOL,
2207                 .off1   = td_var_offset(fsync_on_close),
2208                 .help   = "fsync files on close",
2209                 .def    = "0",
2210                 .category = FIO_OPT_G_FILE,
2211         },
2212         {
2213                 .name   = "unlink",
2214                 .type   = FIO_OPT_BOOL,
2215                 .off1   = td_var_offset(unlink),
2216                 .help   = "Unlink created files after job has completed",
2217                 .def    = "0",
2218                 .category = FIO_OPT_G_FILE,
2219         },
2220         {
2221                 .name   = "exitall",
2222                 .type   = FIO_OPT_STR_SET,
2223                 .cb     = str_exitall_cb,
2224                 .help   = "Terminate all jobs when one exits",
2225                 .category = FIO_OPT_G_MISC | FIO_OPT_G_JOB,
2226         },
2227         {
2228                 .name   = "stonewall",
2229                 .alias  = "wait_for_previous",
2230                 .type   = FIO_OPT_STR_SET,
2231                 .off1   = td_var_offset(stonewall),
2232                 .help   = "Insert a hard barrier between this job and previous",
2233                 .category = FIO_OPT_G_MISC | FIO_OPT_G_JOB,
2234         },
2235         {
2236                 .name   = "new_group",
2237                 .type   = FIO_OPT_STR_SET,
2238                 .off1   = td_var_offset(new_group),
2239                 .help   = "Mark the start of a new group (for reporting)",
2240                 .category = FIO_OPT_G_MISC | FIO_OPT_G_JOB,
2241         },
2242         {
2243                 .name   = "thread",
2244                 .type   = FIO_OPT_STR_SET,
2245                 .off1   = td_var_offset(use_thread),
2246                 .help   = "Use threads instead of processes",
2247                 .category = FIO_OPT_G_MISC | FIO_OPT_G_OS | FIO_OPT_G_JOB,
2248         },
2249         {
2250                 .name   = "write_bw_log",
2251                 .type   = FIO_OPT_STR,
2252                 .off1   = td_var_offset(write_bw_log),
2253                 .cb     = str_write_bw_log_cb,
2254                 .help   = "Write log of bandwidth during run",
2255                 .category = FIO_OPT_G_LOG,
2256         },
2257         {
2258                 .name   = "write_lat_log",
2259                 .type   = FIO_OPT_STR,
2260                 .off1   = td_var_offset(write_lat_log),
2261                 .cb     = str_write_lat_log_cb,
2262                 .help   = "Write log of latency during run",
2263                 .category = FIO_OPT_G_LOG,
2264         },
2265         {
2266                 .name   = "write_iops_log",
2267                 .type   = FIO_OPT_STR,
2268                 .off1   = td_var_offset(write_iops_log),
2269                 .cb     = str_write_iops_log_cb,
2270                 .help   = "Write log of IOPS during run",
2271                 .category = FIO_OPT_G_LOG,
2272         },
2273         {
2274                 .name   = "log_avg_msec",
2275                 .type   = FIO_OPT_INT,
2276                 .off1   = td_var_offset(log_avg_msec),
2277                 .help   = "Average bw/iops/lat logs over this period of time",
2278                 .def    = "0",
2279                 .category = FIO_OPT_G_LOG,
2280         },
2281         {
2282                 .name   = "hugepage-size",
2283                 .type   = FIO_OPT_INT,
2284                 .off1   = td_var_offset(hugepage_size),
2285                 .help   = "When using hugepages, specify size of each page",
2286                 .def    = __fio_stringify(FIO_HUGE_PAGE),
2287                 .interval = 1024 * 1024,
2288                 .category = FIO_OPT_G_OS | FIO_OPT_G_MEM,
2289         },
2290         {
2291                 .name   = "group_reporting",
2292                 .type   = FIO_OPT_STR_SET,
2293                 .off1   = td_var_offset(group_reporting),
2294                 .help   = "Do reporting on a per-group basis",
2295                 .category = FIO_OPT_G_MISC,
2296         },
2297         {
2298                 .name   = "zero_buffers",
2299                 .type   = FIO_OPT_STR_SET,
2300                 .off1   = td_var_offset(zero_buffers),
2301                 .help   = "Init IO buffers to all zeroes",
2302                 .category = FIO_OPT_G_IO_BUF,
2303         },
2304         {
2305                 .name   = "refill_buffers",
2306                 .type   = FIO_OPT_STR_SET,
2307                 .off1   = td_var_offset(refill_buffers),
2308                 .help   = "Refill IO buffers on every IO submit",
2309                 .category = FIO_OPT_G_IO_BUF,
2310         },
2311         {
2312                 .name   = "scramble_buffers",
2313                 .type   = FIO_OPT_BOOL,
2314                 .off1   = td_var_offset(scramble_buffers),
2315                 .help   = "Slightly scramble buffers on every IO submit",
2316                 .def    = "1",
2317                 .category = FIO_OPT_G_IO_BUF,
2318         },
2319         {
2320                 .name   = "buffer_compress_percentage",
2321                 .type   = FIO_OPT_INT,
2322                 .off1   = td_var_offset(compress_percentage),
2323                 .maxval = 100,
2324                 .minval = 1,
2325                 .help   = "How compressible the buffer is (approximately)",
2326                 .interval = 5,
2327                 .category = FIO_OPT_G_IO_BUF,
2328         },
2329         {
2330                 .name   = "buffer_compress_chunk",
2331                 .type   = FIO_OPT_INT,
2332                 .off1   = td_var_offset(compress_chunk),
2333                 .parent = "buffer_compress_percentage",
2334                 .hide   = 1,
2335                 .help   = "Size of compressible region in buffer",
2336                 .interval = 256,
2337                 .category = FIO_OPT_G_IO_BUF,
2338         },
2339         {
2340                 .name   = "clat_percentiles",
2341                 .type   = FIO_OPT_BOOL,
2342                 .off1   = td_var_offset(clat_percentiles),
2343                 .help   = "Enable the reporting of completion latency percentiles",
2344                 .def    = "1",
2345                 .category = FIO_OPT_G_STAT,
2346         },
2347         {
2348                 .name   = "percentile_list",
2349                 .type   = FIO_OPT_FLOAT_LIST,
2350                 .off1   = td_var_offset(percentile_list),
2351                 .off2   = td_var_offset(overwrite_plist),
2352                 .help   = "Specify a custom list of percentiles to report",
2353                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2354                 .minfp  = 0.0,
2355                 .maxfp  = 100.0,
2356                 .category = FIO_OPT_G_STAT,
2357         },
2358
2359 #ifdef FIO_HAVE_DISK_UTIL
2360         {
2361                 .name   = "disk_util",
2362                 .type   = FIO_OPT_BOOL,
2363                 .off1   = td_var_offset(do_disk_util),
2364                 .help   = "Log disk utilization statistics",
2365                 .def    = "1",
2366                 .category = FIO_OPT_G_OS | FIO_OPT_G_STAT,
2367         },
2368 #endif
2369         {
2370                 .name   = "gtod_reduce",
2371                 .type   = FIO_OPT_BOOL,
2372                 .help   = "Greatly reduce number of gettimeofday() calls",
2373                 .cb     = str_gtod_reduce_cb,
2374                 .def    = "0",
2375                 .category = FIO_OPT_G_OS | FIO_OPT_G_MISC | FIO_OPT_G_STAT,
2376         },
2377         {
2378                 .name   = "disable_lat",
2379                 .type   = FIO_OPT_BOOL,
2380                 .off1   = td_var_offset(disable_lat),
2381                 .help   = "Disable latency numbers",
2382                 .parent = "gtod_reduce",
2383                 .hide   = 1,
2384                 .def    = "0",
2385                 .category = FIO_OPT_G_OS | FIO_OPT_G_MISC | FIO_OPT_G_STAT,
2386         },
2387         {
2388                 .name   = "disable_clat",
2389                 .type   = FIO_OPT_BOOL,
2390                 .off1   = td_var_offset(disable_clat),
2391                 .help   = "Disable completion latency numbers",
2392                 .parent = "gtod_reduce",
2393                 .hide   = 1,
2394                 .def    = "0",
2395                 .category = FIO_OPT_G_OS | FIO_OPT_G_MISC | FIO_OPT_G_STAT,
2396         },
2397         {
2398                 .name   = "disable_slat",
2399                 .type   = FIO_OPT_BOOL,
2400                 .off1   = td_var_offset(disable_slat),
2401                 .help   = "Disable submission latency numbers",
2402                 .parent = "gtod_reduce",
2403                 .hide   = 1,
2404                 .def    = "0",
2405                 .category = FIO_OPT_G_OS | FIO_OPT_G_MISC | FIO_OPT_G_STAT,
2406         },
2407         {
2408                 .name   = "disable_bw_measurement",
2409                 .type   = FIO_OPT_BOOL,
2410                 .off1   = td_var_offset(disable_bw),
2411                 .help   = "Disable bandwidth logging",
2412                 .parent = "gtod_reduce",
2413                 .hide   = 1,
2414                 .def    = "0",
2415                 .category = FIO_OPT_G_OS | FIO_OPT_G_MISC | FIO_OPT_G_STAT,
2416         },
2417         {
2418                 .name   = "gtod_cpu",
2419                 .type   = FIO_OPT_INT,
2420                 .cb     = str_gtod_cpu_cb,
2421                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2422                 .verify = gtod_cpu_verify,
2423                 .category = FIO_OPT_G_OS | FIO_OPT_G_MISC | FIO_OPT_G_STAT,
2424         },
2425         {
2426                 .name   = "continue_on_error",
2427                 .type   = FIO_OPT_STR,
2428                 .off1   = td_var_offset(continue_on_error),
2429                 .help   = "Continue on non-fatal errors during IO",
2430                 .def    = "none",
2431                 .category = FIO_OPT_G_MISC | FIO_OPT_G_ERR,
2432                 .posval = {
2433                           { .ival = "none",
2434                             .oval = ERROR_TYPE_NONE,
2435                             .help = "Exit when an error is encountered",
2436                           },
2437                           { .ival = "read",
2438                             .oval = ERROR_TYPE_READ,
2439                             .help = "Continue on read errors only",
2440                           },
2441                           { .ival = "write",
2442                             .oval = ERROR_TYPE_WRITE,
2443                             .help = "Continue on write errors only",
2444                           },
2445                           { .ival = "io",
2446                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2447                             .help = "Continue on any IO errors",
2448                           },
2449                           { .ival = "verify",
2450                             .oval = ERROR_TYPE_VERIFY,
2451                             .help = "Continue on verify errors only",
2452                           },
2453                           { .ival = "all",
2454                             .oval = ERROR_TYPE_ANY,
2455                             .help = "Continue on all io and verify errors",
2456                           },
2457                           { .ival = "0",
2458                             .oval = ERROR_TYPE_NONE,
2459                             .help = "Alias for 'none'",
2460                           },
2461                           { .ival = "1",
2462                             .oval = ERROR_TYPE_ANY,
2463                             .help = "Alias for 'all'",
2464                           },
2465                 },
2466         },
2467         {
2468                 .name   = "profile",
2469                 .type   = FIO_OPT_STR_STORE,
2470                 .off1   = td_var_offset(profile),
2471                 .help   = "Select a specific builtin performance test",
2472                 .category = FIO_OPT_G_MISC | FIO_OPT_G_JOB,
2473         },
2474         {
2475                 .name   = "cgroup",
2476                 .type   = FIO_OPT_STR_STORE,
2477                 .off1   = td_var_offset(cgroup),
2478                 .help   = "Add job to cgroup of this name",
2479                 .category = FIO_OPT_G_MISC | FIO_OPT_G_OS,
2480         },
2481         {
2482                 .name   = "cgroup_weight",
2483                 .type   = FIO_OPT_INT,
2484                 .off1   = td_var_offset(cgroup_weight),
2485                 .help   = "Use given weight for cgroup",
2486                 .minval = 100,
2487                 .maxval = 1000,
2488                 .category = FIO_OPT_G_MISC | FIO_OPT_G_OS,
2489         },
2490         {
2491                 .name   = "cgroup_nodelete",
2492                 .type   = FIO_OPT_BOOL,
2493                 .off1   = td_var_offset(cgroup_nodelete),
2494                 .help   = "Do not delete cgroups after job completion",
2495                 .def    = "0",
2496                 .category = FIO_OPT_G_MISC | FIO_OPT_G_OS,
2497         },
2498         {
2499                 .name   = "uid",
2500                 .type   = FIO_OPT_INT,
2501                 .off1   = td_var_offset(uid),
2502                 .help   = "Run job with this user ID",
2503                 .category = FIO_OPT_G_OS | FIO_OPT_G_JOB,
2504         },
2505         {
2506                 .name   = "gid",
2507                 .type   = FIO_OPT_INT,
2508                 .off1   = td_var_offset(gid),
2509                 .help   = "Run job with this group ID",
2510                 .category = FIO_OPT_G_OS | FIO_OPT_G_JOB,
2511         },
2512         {
2513                 .name   = "flow_id",
2514                 .type   = FIO_OPT_INT,
2515                 .off1   = td_var_offset(flow_id),
2516                 .help   = "The flow index ID to use",
2517                 .def    = "0",
2518                 .category = FIO_OPT_G_IO,
2519         },
2520         {
2521                 .name   = "flow",
2522                 .type   = FIO_OPT_INT,
2523                 .off1   = td_var_offset(flow),
2524                 .help   = "Weight for flow control of this job",
2525                 .parent = "flow_id",
2526                 .hide   = 1,
2527                 .def    = "0",
2528                 .category = FIO_OPT_G_IO,
2529         },
2530         {
2531                 .name   = "flow_watermark",
2532                 .type   = FIO_OPT_INT,
2533                 .off1   = td_var_offset(flow_watermark),
2534                 .help   = "High watermark for flow control. This option"
2535                         " should be set to the same value for all threads"
2536                         " with non-zero flow.",
2537                 .parent = "flow_id",
2538                 .hide   = 1,
2539                 .def    = "1024",
2540                 .category = FIO_OPT_G_IO,
2541         },
2542         {
2543                 .name   = "flow_sleep",
2544                 .type   = FIO_OPT_INT,
2545                 .off1   = td_var_offset(flow_sleep),
2546                 .help   = "How many microseconds to sleep after being held"
2547                         " back by the flow control mechanism",
2548                 .parent = "flow_id",
2549                 .hide   = 1,
2550                 .def    = "0",
2551                 .category = FIO_OPT_G_IO,
2552         },
2553         {
2554                 .name = NULL,
2555         },
2556 };
2557
2558 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2559                         const char *name, int val)
2560 {
2561         lopt->name = (char *) name;
2562         lopt->val = val;
2563         if (o->type == FIO_OPT_STR_SET)
2564                 lopt->has_arg = no_argument;
2565         else
2566                 lopt->has_arg = required_argument;
2567 }
2568
2569 static void options_to_lopts(struct fio_option *opts,
2570                               struct option *long_options,
2571                               int i, int option_type)
2572 {
2573         struct fio_option *o = &opts[0];
2574         while (o->name) {
2575                 add_to_lopt(&long_options[i], o, o->name, option_type);
2576                 if (o->alias) {
2577                         i++;
2578                         add_to_lopt(&long_options[i], o, o->alias, option_type);
2579                 }
2580
2581                 i++;
2582                 o++;
2583                 assert(i < FIO_NR_OPTIONS);
2584         }
2585 }
2586
2587 void fio_options_set_ioengine_opts(struct option *long_options,
2588                                    struct thread_data *td)
2589 {
2590         unsigned int i;
2591
2592         i = 0;
2593         while (long_options[i].name) {
2594                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2595                         memset(&long_options[i], 0, sizeof(*long_options));
2596                         break;
2597                 }
2598                 i++;
2599         }
2600
2601         /*
2602          * Just clear out the prior ioengine options.
2603          */
2604         if (!td || !td->eo)
2605                 return;
2606
2607         options_to_lopts(td->io_ops->options, long_options, i,
2608                          FIO_GETOPT_IOENGINE);
2609 }
2610
2611 void fio_options_dup_and_init(struct option *long_options)
2612 {
2613         unsigned int i;
2614
2615         options_init(fio_options);
2616
2617         i = 0;
2618         while (long_options[i].name)
2619                 i++;
2620
2621         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
2622 }
2623
2624 struct fio_keyword {
2625         const char *word;
2626         const char *desc;
2627         char *replace;
2628 };
2629
2630 static struct fio_keyword fio_keywords[] = {
2631         {
2632                 .word   = "$pagesize",
2633                 .desc   = "Page size in the system",
2634         },
2635         {
2636                 .word   = "$mb_memory",
2637                 .desc   = "Megabytes of memory online",
2638         },
2639         {
2640                 .word   = "$ncpus",
2641                 .desc   = "Number of CPUs online in the system",
2642         },
2643         {
2644                 .word   = NULL,
2645         },
2646 };
2647
2648 void fio_keywords_init(void)
2649 {
2650         unsigned long long mb_memory;
2651         char buf[128];
2652         long l;
2653
2654         sprintf(buf, "%lu", page_size);
2655         fio_keywords[0].replace = strdup(buf);
2656
2657         mb_memory = os_phys_mem() / (1024 * 1024);
2658         sprintf(buf, "%llu", mb_memory);
2659         fio_keywords[1].replace = strdup(buf);
2660
2661         l = cpus_online();
2662         sprintf(buf, "%lu", l);
2663         fio_keywords[2].replace = strdup(buf);
2664 }
2665
2666 #define BC_APP          "bc"
2667
2668 static char *bc_calc(char *str)
2669 {
2670         char buf[128], *tmp;
2671         FILE *f;
2672         int ret;
2673
2674         /*
2675          * No math, just return string
2676          */
2677         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2678              !strchr(str, '/')) || strchr(str, '\''))
2679                 return str;
2680
2681         /*
2682          * Split option from value, we only need to calculate the value
2683          */
2684         tmp = strchr(str, '=');
2685         if (!tmp)
2686                 return str;
2687
2688         tmp++;
2689
2690         /*
2691          * Prevent buffer overflows; such a case isn't reasonable anyway
2692          */
2693         if (strlen(str) >= 128 || strlen(tmp) > 100)
2694                 return str;
2695
2696         sprintf(buf, "which %s > /dev/null", BC_APP);
2697         if (system(buf)) {
2698                 log_err("fio: bc is needed for performing math\n");
2699                 return NULL;
2700         }
2701
2702         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2703         f = popen(buf, "r");
2704         if (!f) {
2705                 return NULL;
2706         }
2707
2708         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2709         if (ret <= 0) {
2710                 return NULL;
2711         }
2712
2713         pclose(f);
2714         buf[(tmp - str) + ret - 1] = '\0';
2715         memcpy(buf, str, tmp - str);
2716         free(str);
2717         return strdup(buf);
2718 }
2719
2720 /*
2721  * Return a copy of the input string with substrings of the form ${VARNAME}
2722  * substituted with the value of the environment variable VARNAME.  The
2723  * substitution always occurs, even if VARNAME is empty or the corresponding
2724  * environment variable undefined.
2725  */
2726 static char *option_dup_subs(const char *opt)
2727 {
2728         char out[OPT_LEN_MAX+1];
2729         char in[OPT_LEN_MAX+1];
2730         char *outptr = out;
2731         char *inptr = in;
2732         char *ch1, *ch2, *env;
2733         ssize_t nchr = OPT_LEN_MAX;
2734         size_t envlen;
2735
2736         if (strlen(opt) + 1 > OPT_LEN_MAX) {
2737                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2738                 return NULL;
2739         }
2740
2741         in[OPT_LEN_MAX] = '\0';
2742         strncpy(in, opt, OPT_LEN_MAX);
2743
2744         while (*inptr && nchr > 0) {
2745                 if (inptr[0] == '$' && inptr[1] == '{') {
2746                         ch2 = strchr(inptr, '}');
2747                         if (ch2 && inptr+1 < ch2) {
2748                                 ch1 = inptr+2;
2749                                 inptr = ch2+1;
2750                                 *ch2 = '\0';
2751
2752                                 env = getenv(ch1);
2753                                 if (env) {
2754                                         envlen = strlen(env);
2755                                         if (envlen <= nchr) {
2756                                                 memcpy(outptr, env, envlen);
2757                                                 outptr += envlen;
2758                                                 nchr -= envlen;
2759                                         }
2760                                 }
2761
2762                                 continue;
2763                         }
2764                 }
2765
2766                 *outptr++ = *inptr++;
2767                 --nchr;
2768         }
2769
2770         *outptr = '\0';
2771         return strdup(out);
2772 }
2773
2774 /*
2775  * Look for reserved variable names and replace them with real values
2776  */
2777 static char *fio_keyword_replace(char *opt)
2778 {
2779         char *s;
2780         int i;
2781         int docalc = 0;
2782
2783         for (i = 0; fio_keywords[i].word != NULL; i++) {
2784                 struct fio_keyword *kw = &fio_keywords[i];
2785
2786                 while ((s = strstr(opt, kw->word)) != NULL) {
2787                         char *new = malloc(strlen(opt) + 1);
2788                         char *o_org = opt;
2789                         int olen = s - opt;
2790                         int len;
2791
2792                         /*
2793                          * Copy part of the string before the keyword and
2794                          * sprintf() the replacement after it.
2795                          */
2796                         memcpy(new, opt, olen);
2797                         len = sprintf(new + olen, "%s", kw->replace);
2798
2799                         /*
2800                          * If there's more in the original string, copy that
2801                          * in too
2802                          */
2803                         opt += strlen(kw->word) + olen;
2804                         if (strlen(opt))
2805                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2806
2807                         /*
2808                          * replace opt and free the old opt
2809                          */
2810                         opt = new;
2811                         free(o_org);
2812
2813                         docalc = 1;
2814                 }
2815         }
2816
2817         /*
2818          * Check for potential math and invoke bc, if possible
2819          */
2820         if (docalc)
2821                 opt = bc_calc(opt);
2822
2823         return opt;
2824 }
2825
2826 static char **dup_and_sub_options(char **opts, int num_opts)
2827 {
2828         int i;
2829         char **opts_copy = malloc(num_opts * sizeof(*opts));
2830         for (i = 0; i < num_opts; i++) {
2831                 opts_copy[i] = option_dup_subs(opts[i]);
2832                 if (!opts_copy[i])
2833                         continue;
2834                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2835         }
2836         return opts_copy;
2837 }
2838
2839 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2840 {
2841         int i, ret, unknown;
2842         char **opts_copy;
2843
2844         sort_options(opts, fio_options, num_opts);
2845         opts_copy = dup_and_sub_options(opts, num_opts);
2846
2847         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2848                 struct fio_option *o;
2849                 int newret = parse_option(opts_copy[i], opts[i], fio_options,
2850                                                 &o, td);
2851
2852                 if (opts_copy[i]) {
2853                         if (newret && !o) {
2854                                 unknown++;
2855                                 continue;
2856                         }
2857                         free(opts_copy[i]);
2858                         opts_copy[i] = NULL;
2859                 }
2860
2861                 ret |= newret;
2862         }
2863
2864         if (unknown) {
2865                 ret |= ioengine_load(td);
2866                 if (td->eo) {
2867                         sort_options(opts_copy, td->io_ops->options, num_opts);
2868                         opts = opts_copy;
2869                 }
2870                 for (i = 0; i < num_opts; i++) {
2871                         struct fio_option *o = NULL;
2872                         int newret = 1;
2873                         if (!opts_copy[i])
2874                                 continue;
2875
2876                         if (td->eo)
2877                                 newret = parse_option(opts_copy[i], opts[i],
2878                                                       td->io_ops->options, &o,
2879                                                       td->eo);
2880
2881                         ret |= newret;
2882                         if (!o)
2883                                 log_err("Bad option <%s>\n", opts[i]);
2884
2885                         free(opts_copy[i]);
2886                         opts_copy[i] = NULL;
2887                 }
2888         }
2889
2890         free(opts_copy);
2891         return ret;
2892 }
2893
2894 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2895 {
2896         return parse_cmd_option(opt, val, fio_options, td);
2897 }
2898
2899 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
2900                                 char *val)
2901 {
2902         return parse_cmd_option(opt, val, td->io_ops->options, td);
2903 }
2904
2905 void fio_fill_default_options(struct thread_data *td)
2906 {
2907         fill_default_options(td, fio_options);
2908 }
2909
2910 int fio_show_option_help(const char *opt)
2911 {
2912         return show_cmd_help(fio_options, opt);
2913 }
2914
2915 void options_mem_dupe(void *data, struct fio_option *options)
2916 {
2917         struct fio_option *o;
2918         char **ptr;
2919
2920         for (o = &options[0]; o->name; o++) {
2921                 if (o->type != FIO_OPT_STR_STORE)
2922                         continue;
2923
2924                 ptr = td_var(data, o->off1);
2925                 if (*ptr)
2926                         *ptr = strdup(*ptr);
2927         }
2928 }
2929
2930 /*
2931  * dupe FIO_OPT_STR_STORE options
2932  */
2933 void fio_options_mem_dupe(struct thread_data *td)
2934 {
2935         options_mem_dupe(&td->o, fio_options);
2936
2937         if (td->eo && td->io_ops) {
2938                 void *oldeo = td->eo;
2939
2940                 td->eo = malloc(td->io_ops->option_struct_size);
2941                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
2942                 options_mem_dupe(td->eo, td->io_ops->options);
2943         }
2944 }
2945
2946 unsigned int fio_get_kb_base(void *data)
2947 {
2948         struct thread_data *td = data;
2949         unsigned int kb_base = 0;
2950
2951         if (td)
2952                 kb_base = td->o.kb_base;
2953         if (!kb_base)
2954                 kb_base = 1024;
2955
2956         return kb_base;
2957 }
2958
2959 int add_option(struct fio_option *o)
2960 {
2961         struct fio_option *__o;
2962         int opt_index = 0;
2963
2964         __o = fio_options;
2965         while (__o->name) {
2966                 opt_index++;
2967                 __o++;
2968         }
2969
2970         memcpy(&fio_options[opt_index], o, sizeof(*o));
2971         return 0;
2972 }
2973
2974 void invalidate_profile_options(const char *prof_name)
2975 {
2976         struct fio_option *o;
2977
2978         o = fio_options;
2979         while (o->name) {
2980                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
2981                         o->type = FIO_OPT_INVALID;
2982                         o->prof_name = NULL;
2983                 }
2984                 o++;
2985         }
2986 }
2987
2988 void add_opt_posval(const char *optname, const char *ival, const char *help)
2989 {
2990         struct fio_option *o;
2991         unsigned int i;
2992
2993         o = find_option(fio_options, optname);
2994         if (!o)
2995                 return;
2996
2997         for (i = 0; i < PARSE_MAX_VP; i++) {
2998                 if (o->posval[i].ival)
2999                         continue;
3000
3001                 o->posval[i].ival = ival;
3002                 o->posval[i].help = help;
3003                 break;
3004         }
3005 }
3006
3007 void del_opt_posval(const char *optname, const char *ival)
3008 {
3009         struct fio_option *o;
3010         unsigned int i;
3011
3012         o = find_option(fio_options, optname);
3013         if (!o)
3014                 return;
3015
3016         for (i = 0; i < PARSE_MAX_VP; i++) {
3017                 if (!o->posval[i].ival)
3018                         continue;
3019                 if (strcmp(o->posval[i].ival, ival))
3020                         continue;
3021
3022                 o->posval[i].ival = NULL;
3023                 o->posval[i].help = NULL;
3024         }
3025 }
3026
3027 void fio_options_free(struct thread_data *td)
3028 {
3029         options_free(fio_options, td);
3030         if (td->eo && td->io_ops && td->io_ops->options) {
3031                 options_free(td->io_ops->options, td->eo);
3032                 free(td->eo);
3033                 td->eo = NULL;
3034         }
3035 }