options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163
 164 }
 165
 166 static int str_bssplit_cb(void *data, const char *input)
 167 {
 168         struct thread_data *td = data;
 169         char *str, *p, *odir;
 170         int ret = 0;
 171
 172         p = str = strdup(input);
 173
 174         strip_blank_front(&str);
 175         strip_blank_end(str);
 176
 177         odir = strchr(str, ',');
 178         if (odir) {
 179                 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 180                 if (!ret) {
 181                         *odir = '\0';
 182                         ret = bssplit_ddir(td, DDIR_READ, str);
 183                 }
 184         } else {
 185                 char *op;
 186
 187                 op = strdup(str);
 188
 189                 ret = bssplit_ddir(td, DDIR_READ, str);
 190                 if (!ret)
 191                         ret = bssplit_ddir(td, DDIR_WRITE, op);
 192
 193                 free(op);
 194         }
 195
 196         free(p);
 197         return ret;
 198 }
 199
 200 static int str_rw_cb(void *data, const char *str)
 201 {
 202         struct thread_data *td = data;
 203         char *nr = get_opt_postfix(str);
 204
 205         td->o.ddir_seq_nr = 1;
 206         td->o.ddir_seq_add = 0;
 207
 208         if (!nr)
 209                 return 0;
 210
 211         if (td_random(td))
 212                 td->o.ddir_seq_nr = atoi(nr);
 213         else {
 214                 long long val;
 215
 216                 if (str_to_decimal(nr, &val, 1, td)) {
 217                         log_err("fio: rw postfix parsing failed\n");
 218                         free(nr);
 219                         return 1;
 220                 }
 221
 222                 td->o.ddir_seq_add = val;
 223         }
 224
 225         free(nr);
 226         return 0;
 227 }
 228
 229 #ifdef FIO_HAVE_LIBAIO
 230 static int str_libaio_cb(void *data, const char *str)
 231 {
 232         struct thread_data *td = data;
 233
 234         if (!strcmp(str, "userspace_reap")) {
 235                 td->o.userspace_libaio_reap = 1;
 236                 return 0;
 237         }
 238
 239         log_err("fio: bad libaio sub-option: %s\n", str);
 240         return 1;
 241 }
 242 #endif
 243
 244 static int str_mem_cb(void *data, const char *mem)
 245 {
 246         struct thread_data *td = data;
 247
 248         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 249                 td->mmapfile = get_opt_postfix(mem);
 250                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 251                         log_err("fio: mmaphuge:/path/to/file\n");
 252                         return 1;
 253                 }
 254         }
 255
 256         return 0;
 257 }
 258
 259 static int str_verify_cb(void *data, const char *mem)
 260 {
 261         struct thread_data *td = data;
 262
 263         if (td->o.verify != VERIFY_CRC32C_INTEL)
 264                 return 0;
 265
 266         if (!crc32c_intel_works()) {
 267                 log_info("fio: System does not support hw accelerated crc32c. Falling back to sw crc32c.\n");
 268                 td->o.verify = VERIFY_CRC32C;
 269         }
 270
 271         return 0;
 272 }
 273
 274 static int fio_clock_source_cb(void *data, const char *str)
 275 {
 276         struct thread_data *td = data;
 277
 278         fio_clock_source = td->o.clocksource;
 279         fio_time_init();
 280         return 0;
 281 }
 282
 283 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 284 {
 285         mlock_size = *val;
 286         return 0;
 287 }
 288
 289 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 290 {
 291         struct thread_data *td = data;
 292
 293         td->o.rwmix[DDIR_READ] = *val;
 294         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 295         return 0;
 296 }
 297
 298 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 299 {
 300         struct thread_data *td = data;
 301
 302         td->o.rwmix[DDIR_WRITE] = *val;
 303         td->o.rwmix[DDIR_READ] = 100 - *val;
 304         return 0;
 305 }
 306
 307 #ifdef FIO_HAVE_IOPRIO
 308 static int str_prioclass_cb(void *data, unsigned long long *val)
 309 {
 310         struct thread_data *td = data;
 311         unsigned short mask;
 312
 313         /*
 314          * mask off old class bits, str_prio_cb() may have set a default class
 315          */
 316         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 317         td->ioprio &= mask;
 318
 319         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 320         td->ioprio_set = 1;
 321         return 0;
 322 }
 323
 324 static int str_prio_cb(void *data, unsigned long long *val)
 325 {
 326         struct thread_data *td = data;
 327
 328         td->ioprio |= *val;
 329
 330         /*
 331          * If no class is set, assume BE
 332          */
 333         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 334                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 335
 336         td->ioprio_set = 1;
 337         return 0;
 338 }
 339 #endif
 340
 341 static int str_exitall_cb(void)
 342 {
 343         exitall_on_terminate = 1;
 344         return 0;
 345 }
 346
 347 #ifdef FIO_HAVE_CPU_AFFINITY
 348 static int str_cpumask_cb(void *data, unsigned long long *val)
 349 {
 350         struct thread_data *td = data;
 351         unsigned int i;
 352         long max_cpu;
 353         int ret;
 354
 355         ret = fio_cpuset_init(&td->o.cpumask);
 356         if (ret < 0) {
 357                 log_err("fio: cpuset_init failed\n");
 358                 td_verror(td, ret, "fio_cpuset_init");
 359                 return 1;
 360         }
 361
 362         max_cpu = cpus_online();
 363
 364         for (i = 0; i < sizeof(int) * 8; i++) {
 365                 if ((1 << i) & *val) {
 366                         if (i > max_cpu) {
 367                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 368                                                                 max_cpu);
 369                                 return 1;
 370                         }
 371                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 372                         fio_cpu_set(&td->o.cpumask, i);
 373                 }
 374         }
 375
 376         td->o.cpumask_set = 1;
 377         return 0;
 378 }
 379
 380 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 381                             const char *input)
 382 {
 383         char *cpu, *str, *p;
 384         long max_cpu;
 385         int ret = 0;
 386
 387         ret = fio_cpuset_init(mask);
 388         if (ret < 0) {
 389                 log_err("fio: cpuset_init failed\n");
 390                 td_verror(td, ret, "fio_cpuset_init");
 391                 return 1;
 392         }
 393
 394         p = str = strdup(input);
 395
 396         strip_blank_front(&str);
 397         strip_blank_end(str);
 398
 399         max_cpu = cpus_online();
 400
 401         while ((cpu = strsep(&str, ",")) != NULL) {
 402                 char *str2, *cpu2;
 403                 int icpu, icpu2;
 404
 405                 if (!strlen(cpu))
 406                         break;
 407
 408                 str2 = cpu;
 409                 icpu2 = -1;
 410                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 411                         if (!strlen(cpu2))
 412                                 break;
 413
 414                         icpu2 = atoi(cpu2);
 415                 }
 416
 417                 icpu = atoi(cpu);
 418                 if (icpu2 == -1)
 419                         icpu2 = icpu;
 420                 while (icpu <= icpu2) {
 421                         if (icpu >= FIO_MAX_CPUS) {
 422                                 log_err("fio: your OS only supports up to"
 423                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 424                                 ret = 1;
 425                                 break;
 426                         }
 427                         if (icpu > max_cpu) {
 428                                 log_err("fio: CPU %d too large (max=%ld)\n",
 429                                                         icpu, max_cpu);
 430                                 ret = 1;
 431                                 break;
 432                         }
 433
 434                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 435                         fio_cpu_set(mask, icpu);
 436                         icpu++;
 437                 }
 438                 if (ret)
 439                         break;
 440         }
 441
 442         free(p);
 443         if (!ret)
 444                 td->o.cpumask_set = 1;
 445         return ret;
 446 }
 447
 448 static int str_cpus_allowed_cb(void *data, const char *input)
 449 {
 450         struct thread_data *td = data;
 451         int ret;
 452
 453         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 454         if (!ret)
 455                 td->o.cpumask_set = 1;
 456
 457         return ret;
 458 }
 459
 460 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 461 {
 462         struct thread_data *td = data;
 463         int ret;
 464
 465         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 466         if (!ret)
 467                 td->o.verify_cpumask_set = 1;
 468
 469         return ret;
 470 }
 471 #endif
 472
 473 #ifdef FIO_HAVE_TRIM
 474 static int str_verify_trim_cb(void *data, unsigned long long *val)
 475 {
 476         struct thread_data *td = data;
 477
 478         td->o.trim_percentage = *val;
 479         return 0;
 480 }
 481 #endif
 482
 483 static int str_fst_cb(void *data, const char *str)
 484 {
 485         struct thread_data *td = data;
 486         char *nr = get_opt_postfix(str);
 487
 488         td->file_service_nr = 1;
 489         if (nr) {
 490                 td->file_service_nr = atoi(nr);
 491                 free(nr);
 492         }
 493
 494         return 0;
 495 }
 496
 497 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 498 static int str_sfr_cb(void *data, const char *str)
 499 {
 500         struct thread_data *td = data;
 501         char *nr = get_opt_postfix(str);
 502
 503         td->sync_file_range_nr = 1;
 504         if (nr) {
 505                 td->sync_file_range_nr = atoi(nr);
 506                 free(nr);
 507         }
 508
 509         return 0;
 510 }
 511 #endif
 512
 513 static int check_dir(struct thread_data *td, char *fname)
 514 {
 515 #if 0
 516         char file[PATH_MAX], *dir;
 517         int elen = 0;
 518
 519         if (td->o.directory) {
 520                 strcpy(file, td->o.directory);
 521                 strcat(file, "/");
 522                 elen = strlen(file);
 523         }
 524
 525         sprintf(file + elen, "%s", fname);
 526         dir = dirname(file);
 527
 528         {
 529         struct stat sb;
 530         /*
 531          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 532          * yet, so we can't do this check right here...
 533          */
 534         if (lstat(dir, &sb) < 0) {
 535                 int ret = errno;
 536
 537                 log_err("fio: %s is not a directory\n", dir);
 538                 td_verror(td, ret, "lstat");
 539                 return 1;
 540         }
 541
 542         if (!S_ISDIR(sb.st_mode)) {
 543                 log_err("fio: %s is not a directory\n", dir);
 544                 return 1;
 545         }
 546         }
 547 #endif
 548
 549         return 0;
 550 }
 551
 552 /*
 553  * Return next file in the string. Files are separated with ':'. If the ':'
 554  * is escaped with a '\', then that ':' is part of the filename and does not
 555  * indicate a new file.
 556  */
 557 static char *get_next_file_name(char **ptr)
 558 {
 559         char *str = *ptr;
 560         char *p, *start;
 561
 562         if (!str || !strlen(str))
 563                 return NULL;
 564
 565         start = str;
 566         do {
 567                 /*
 568                  * No colon, we are done
 569                  */
 570                 p = strchr(str, ':');
 571                 if (!p) {
 572                         *ptr = NULL;
 573                         break;
 574                 }
 575
 576                 /*
 577                  * We got a colon, but it's the first character. Skip and
 578                  * continue
 579                  */
 580                 if (p == start) {
 581                         str = ++start;
 582                         continue;
 583                 }
 584
 585                 if (*(p - 1) != '\\') {
 586                         *p = '\0';
 587                         *ptr = p + 1;
 588                         break;
 589                 }
 590
 591                 memmove(p - 1, p, strlen(p) + 1);
 592                 str = p;
 593         } while (1);
 594
 595         return start;
 596 }
 597
 598 static int str_hostname_cb(void *data, const char *input)
 599 {
 600         struct thread_data *td = data;
 601
 602         td->o.filename = strdup(input);
 603         return 0;
 604 }
 605
 606 static int str_filename_cb(void *data, const char *input)
 607 {
 608         struct thread_data *td = data;
 609         char *fname, *str, *p;
 610
 611         p = str = strdup(input);
 612
 613         strip_blank_front(&str);
 614         strip_blank_end(str);
 615
 616         if (!td->files_index)
 617                 td->o.nr_files = 0;
 618
 619         while ((fname = get_next_file_name(&str)) != NULL) {
 620                 if (!strlen(fname))
 621                         break;
 622                 if (check_dir(td, fname)) {
 623                         free(p);
 624                         return 1;
 625                 }
 626                 add_file(td, fname);
 627                 td->o.nr_files++;
 628         }
 629
 630         free(p);
 631         return 0;
 632 }
 633
 634 static int str_directory_cb(void *data, const char fio_unused *str)
 635 {
 636         struct thread_data *td = data;
 637         struct stat sb;
 638
 639         if (lstat(td->o.directory, &sb) < 0) {
 640                 int ret = errno;
 641
 642                 log_err("fio: %s is not a directory\n", td->o.directory);
 643                 td_verror(td, ret, "lstat");
 644                 return 1;
 645         }
 646         if (!S_ISDIR(sb.st_mode)) {
 647                 log_err("fio: %s is not a directory\n", td->o.directory);
 648                 return 1;
 649         }
 650
 651         return 0;
 652 }
 653
 654 static int str_opendir_cb(void *data, const char fio_unused *str)
 655 {
 656         struct thread_data *td = data;
 657
 658         if (!td->files_index)
 659                 td->o.nr_files = 0;
 660
 661         return add_dir_files(td, td->o.opendir);
 662 }
 663
 664 static int str_verify_offset_cb(void *data, unsigned long long *off)
 665 {
 666         struct thread_data *td = data;
 667
 668         if (*off && *off < sizeof(struct verify_header)) {
 669                 log_err("fio: verify_offset too small\n");
 670                 return 1;
 671         }
 672
 673         td->o.verify_offset = *off;
 674         return 0;
 675 }
 676
 677 static int str_verify_pattern_cb(void *data, const char *input)
 678 {
 679         struct thread_data *td = data;
 680         long off;
 681         int i = 0, j = 0, len, k, base = 10;
 682         char* loc1, * loc2;
 683
 684         loc1 = strstr(input, "0x");
 685         loc2 = strstr(input, "0X");
 686         if (loc1 || loc2)
 687                 base = 16;
 688         off = strtol(input, NULL, base);
 689         if (off != LONG_MAX || errno != ERANGE) {
 690                 while (off) {
 691                         td->o.verify_pattern[i] = off & 0xff;
 692                         off >>= 8;
 693                         i++;
 694                 }
 695         } else {
 696                 len = strlen(input);
 697                 k = len - 1;
 698                 if (base == 16) {
 699                         if (loc1)
 700                                 j = loc1 - input + 2;
 701                         else
 702                                 j = loc2 - input + 2;
 703                 } else
 704                         return 1;
 705                 if (len - j < MAX_PATTERN_SIZE * 2) {
 706                         while (k >= j) {
 707                                 off = converthexchartoint(input[k--]);
 708                                 if (k >= j)
 709                                         off += (converthexchartoint(input[k--])
 710                                                 * 16);
 711                                 td->o.verify_pattern[i++] = (char) off;
 712                         }
 713                 }
 714         }
 715         td->o.verify_pattern_bytes = i;
 716         /*
 717          * VERIFY_META could already be set
 718          */
 719         if (td->o.verify == VERIFY_NONE)
 720                 td->o.verify = VERIFY_PATTERN;
 721         return 0;
 722 }
 723
 724 static int str_lockfile_cb(void *data, const char *str)
 725 {
 726         struct thread_data *td = data;
 727         char *nr = get_opt_postfix(str);
 728
 729         td->o.lockfile_batch = 1;
 730         if (nr) {
 731                 td->o.lockfile_batch = atoi(nr);
 732                 free(nr);
 733         }
 734
 735         return 0;
 736 }
 737
 738 static int str_write_bw_log_cb(void *data, const char *str)
 739 {
 740         struct thread_data *td = data;
 741
 742         if (str)
 743                 td->o.bw_log_file = strdup(str);
 744
 745         td->o.write_bw_log = 1;
 746         return 0;
 747 }
 748
 749 static int str_write_lat_log_cb(void *data, const char *str)
 750 {
 751         struct thread_data *td = data;
 752
 753         if (str)
 754                 td->o.lat_log_file = strdup(str);
 755
 756         td->o.write_lat_log = 1;
 757         return 0;
 758 }
 759
 760 static int str_write_iops_log_cb(void *data, const char *str)
 761 {
 762         struct thread_data *td = data;
 763
 764         if (str)
 765                 td->o.iops_log_file = strdup(str);
 766
 767         td->o.write_iops_log = 1;
 768         return 0;
 769 }
 770
 771 static int str_gtod_reduce_cb(void *data, int *il)
 772 {
 773         struct thread_data *td = data;
 774         int val = *il;
 775
 776         td->o.disable_lat = !!val;
 777         td->o.disable_clat = !!val;
 778         td->o.disable_slat = !!val;
 779         td->o.disable_bw = !!val;
 780         td->o.clat_percentiles = !val;
 781         if (val)
 782                 td->tv_cache_mask = 63;
 783
 784         return 0;
 785 }
 786
 787 static int str_gtod_cpu_cb(void *data, long long *il)
 788 {
 789         struct thread_data *td = data;
 790         int val = *il;
 791
 792         td->o.gtod_cpu = val;
 793         td->o.gtod_offload = 1;
 794         return 0;
 795 }
 796
 797 static int str_size_cb(void *data, unsigned long long *__val)
 798 {
 799         struct thread_data *td = data;
 800         unsigned long long v = *__val;
 801
 802         if (parse_is_percent(v)) {
 803                 td->o.size = 0;
 804                 td->o.size_percent = -1ULL - v;
 805         } else
 806                 td->o.size = v;
 807
 808         return 0;
 809 }
 810
 811 static int rw_verify(struct fio_option *o, void *data)
 812 {
 813         struct thread_data *td = data;
 814
 815         if (read_only && td_write(td)) {
 816                 log_err("fio: job <%s> has write bit set, but fio is in"
 817                         " read-only mode\n", td->o.name);
 818                 return 1;
 819         }
 820
 821         return 0;
 822 }
 823
 824 static int gtod_cpu_verify(struct fio_option *o, void *data)
 825 {
 826 #ifndef FIO_HAVE_CPU_AFFINITY
 827         struct thread_data *td = data;
 828
 829         if (td->o.gtod_cpu) {
 830                 log_err("fio: platform must support CPU affinity for"
 831                         "gettimeofday() offloading\n");
 832                 return 1;
 833         }
 834 #endif
 835
 836         return 0;
 837 }
 838
 839 static int kb_base_verify(struct fio_option *o, void *data)
 840 {
 841         struct thread_data *td = data;
 842
 843         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
 844                 log_err("fio: kb_base set to nonsensical value: %u\n",
 845                                 td->o.kb_base);
 846                 return 1;
 847         }
 848
 849         return 0;
 850 }
 851
 852 /*
 853  * Map of job/command line options
 854  */
 855 static struct fio_option options[FIO_MAX_OPTS] = {
 856         {
 857                 .name   = "description",
 858                 .type   = FIO_OPT_STR_STORE,
 859                 .off1   = td_var_offset(description),
 860                 .help   = "Text job description",
 861         },
 862         {
 863                 .name   = "name",
 864                 .type   = FIO_OPT_STR_STORE,
 865                 .off1   = td_var_offset(name),
 866                 .help   = "Name of this job",
 867         },
 868         {
 869                 .name   = "directory",
 870                 .type   = FIO_OPT_STR_STORE,
 871                 .off1   = td_var_offset(directory),
 872                 .cb     = str_directory_cb,
 873                 .help   = "Directory to store files in",
 874         },
 875         {
 876                 .name   = "filename",
 877                 .type   = FIO_OPT_STR_STORE,
 878                 .off1   = td_var_offset(filename),
 879                 .cb     = str_filename_cb,
 880                 .prio   = -1, /* must come after "directory" */
 881                 .help   = "File(s) to use for the workload",
 882         },
 883         {
 884                 .name   = "hostname",
 885                 .type   = FIO_OPT_STR_STORE,
 886                 .cb     = str_hostname_cb,
 887                 .help   = "Hostname for net IO engine",
 888         },
 889         {
 890                 .name   = "kb_base",
 891                 .type   = FIO_OPT_INT,
 892                 .off1   = td_var_offset(kb_base),
 893                 .verify = kb_base_verify,
 894                 .prio   = 1,
 895                 .def    = "1024",
 896                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
 897         },
 898         {
 899                 .name   = "lockfile",
 900                 .type   = FIO_OPT_STR,
 901                 .cb     = str_lockfile_cb,
 902                 .off1   = td_var_offset(file_lock_mode),
 903                 .help   = "Lock file when doing IO to it",
 904                 .parent = "filename",
 905                 .def    = "none",
 906                 .posval = {
 907                           { .ival = "none",
 908                             .oval = FILE_LOCK_NONE,
 909                             .help = "No file locking",
 910                           },
 911                           { .ival = "exclusive",
 912                             .oval = FILE_LOCK_EXCLUSIVE,
 913                             .help = "Exclusive file lock",
 914                           },
 915                           {
 916                             .ival = "readwrite",
 917                             .oval = FILE_LOCK_READWRITE,
 918                             .help = "Read vs write lock",
 919                           },
 920                 },
 921         },
 922         {
 923                 .name   = "opendir",
 924                 .type   = FIO_OPT_STR_STORE,
 925                 .off1   = td_var_offset(opendir),
 926                 .cb     = str_opendir_cb,
 927                 .help   = "Recursively add files from this directory and down",
 928         },
 929         {
 930                 .name   = "rw",
 931                 .alias  = "readwrite",
 932                 .type   = FIO_OPT_STR,
 933                 .cb     = str_rw_cb,
 934                 .off1   = td_var_offset(td_ddir),
 935                 .help   = "IO direction",
 936                 .def    = "read",
 937                 .verify = rw_verify,
 938                 .posval = {
 939                           { .ival = "read",
 940                             .oval = TD_DDIR_READ,
 941                             .help = "Sequential read",
 942                           },
 943                           { .ival = "write",
 944                             .oval = TD_DDIR_WRITE,
 945                             .help = "Sequential write",
 946                           },
 947                           { .ival = "randread",
 948                             .oval = TD_DDIR_RANDREAD,
 949                             .help = "Random read",
 950                           },
 951                           { .ival = "randwrite",
 952                             .oval = TD_DDIR_RANDWRITE,
 953                             .help = "Random write",
 954                           },
 955                           { .ival = "rw",
 956                             .oval = TD_DDIR_RW,
 957                             .help = "Sequential read and write mix",
 958                           },
 959                           { .ival = "randrw",
 960                             .oval = TD_DDIR_RANDRW,
 961                             .help = "Random read and write mix"
 962                           },
 963                 },
 964         },
 965         {
 966                 .name   = "rw_sequencer",
 967                 .type   = FIO_OPT_STR,
 968                 .off1   = td_var_offset(rw_seq),
 969                 .help   = "IO offset generator modifier",
 970                 .def    = "sequential",
 971                 .posval = {
 972                           { .ival = "sequential",
 973                             .oval = RW_SEQ_SEQ,
 974                             .help = "Generate sequential offsets",
 975                           },
 976                           { .ival = "identical",
 977                             .oval = RW_SEQ_IDENT,
 978                             .help = "Generate identical offsets",
 979                           },
 980                 },
 981         },
 982
 983         {
 984                 .name   = "ioengine",
 985                 .type   = FIO_OPT_STR_STORE,
 986                 .off1   = td_var_offset(ioengine),
 987                 .help   = "IO engine to use",
 988                 .def    = FIO_PREFERRED_ENGINE,
 989                 .posval = {
 990                           { .ival = "sync",
 991                             .help = "Use read/write",
 992                           },
 993                           { .ival = "psync",
 994                             .help = "Use pread/pwrite",
 995                           },
 996                           { .ival = "vsync",
 997                             .help = "Use readv/writev",
 998                           },
 999 #ifdef FIO_HAVE_LIBAIO
1000                           { .ival = "libaio",
1001                             .help = "Linux native asynchronous IO",
1002                             .cb   = str_libaio_cb,
1003                           },
1004 #endif
1005 #ifdef FIO_HAVE_POSIXAIO
1006                           { .ival = "posixaio",
1007                             .help = "POSIX asynchronous IO",
1008                           },
1009 #endif
1010 #ifdef FIO_HAVE_SOLARISAIO
1011                           { .ival = "solarisaio",
1012                             .help = "Solaris native asynchronous IO",
1013                           },
1014 #endif
1015 #ifdef FIO_HAVE_WINDOWSAIO
1016                           { .ival = "windowsaio",
1017                             .help = "Windows native asynchronous IO"
1018                           },
1019 #endif
1020                           { .ival = "mmap",
1021                             .help = "Memory mapped IO"
1022                           },
1023 #ifdef FIO_HAVE_SPLICE
1024                           { .ival = "splice",
1025                             .help = "splice/vmsplice based IO",
1026                           },
1027                           { .ival = "netsplice",
1028                             .help = "splice/vmsplice to/from the network",
1029                           },
1030 #endif
1031 #ifdef FIO_HAVE_SGIO
1032                           { .ival = "sg",
1033                             .help = "SCSI generic v3 IO",
1034                           },
1035 #endif
1036                           { .ival = "null",
1037                             .help = "Testing engine (no data transfer)",
1038                           },
1039                           { .ival = "net",
1040                             .help = "Network IO",
1041                           },
1042 #ifdef FIO_HAVE_SYSLET
1043                           { .ival = "syslet-rw",
1044                             .help = "syslet enabled async pread/pwrite IO",
1045                           },
1046 #endif
1047                           { .ival = "cpuio",
1048                             .help = "CPU cycle burner engine",
1049                           },
1050 #ifdef FIO_HAVE_GUASI
1051                           { .ival = "guasi",
1052                             .help = "GUASI IO engine",
1053                           },
1054 #endif
1055 #ifdef FIO_HAVE_BINJECT
1056                           { .ival = "binject",
1057                             .help = "binject direct inject block engine",
1058                           },
1059 #endif
1060 #ifdef FIO_HAVE_RDMA
1061                           { .ival = "rdma",
1062                             .help = "RDMA IO engine",
1063                           },
1064 #endif
1065                           { .ival = "external",
1066                             .help = "Load external engine (append name)",
1067                           },
1068                 },
1069         },
1070         {
1071                 .name   = "iodepth",
1072                 .type   = FIO_OPT_INT,
1073                 .off1   = td_var_offset(iodepth),
1074                 .help   = "Number of IO buffers to keep in flight",
1075                 .minval = 1,
1076                 .def    = "1",
1077         },
1078         {
1079                 .name   = "iodepth_batch",
1080                 .alias  = "iodepth_batch_submit",
1081                 .type   = FIO_OPT_INT,
1082                 .off1   = td_var_offset(iodepth_batch),
1083                 .help   = "Number of IO buffers to submit in one go",
1084                 .parent = "iodepth",
1085                 .minval = 1,
1086                 .def    = "1",
1087         },
1088         {
1089                 .name   = "iodepth_batch_complete",
1090                 .type   = FIO_OPT_INT,
1091                 .off1   = td_var_offset(iodepth_batch_complete),
1092                 .help   = "Number of IO buffers to retrieve in one go",
1093                 .parent = "iodepth",
1094                 .minval = 0,
1095                 .def    = "1",
1096         },
1097         {
1098                 .name   = "iodepth_low",
1099                 .type   = FIO_OPT_INT,
1100                 .off1   = td_var_offset(iodepth_low),
1101                 .help   = "Low water mark for queuing depth",
1102                 .parent = "iodepth",
1103         },
1104         {
1105                 .name   = "size",
1106                 .type   = FIO_OPT_STR_VAL,
1107                 .cb     = str_size_cb,
1108                 .help   = "Total size of device or files",
1109         },
1110         {
1111                 .name   = "fill_device",
1112                 .alias  = "fill_fs",
1113                 .type   = FIO_OPT_BOOL,
1114                 .off1   = td_var_offset(fill_device),
1115                 .help   = "Write until an ENOSPC error occurs",
1116                 .def    = "0",
1117         },
1118         {
1119                 .name   = "filesize",
1120                 .type   = FIO_OPT_STR_VAL,
1121                 .off1   = td_var_offset(file_size_low),
1122                 .off2   = td_var_offset(file_size_high),
1123                 .minval = 1,
1124                 .help   = "Size of individual files",
1125         },
1126         {
1127                 .name   = "offset",
1128                 .alias  = "fileoffset",
1129                 .type   = FIO_OPT_STR_VAL,
1130                 .off1   = td_var_offset(start_offset),
1131                 .help   = "Start IO from this offset",
1132                 .def    = "0",
1133         },
1134         {
1135                 .name   = "bs",
1136                 .alias  = "blocksize",
1137                 .type   = FIO_OPT_INT,
1138                 .off1   = td_var_offset(bs[DDIR_READ]),
1139                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1140                 .minval = 1,
1141                 .help   = "Block size unit",
1142                 .def    = "4k",
1143                 .parent = "rw",
1144         },
1145         {
1146                 .name   = "ba",
1147                 .alias  = "blockalign",
1148                 .type   = FIO_OPT_INT,
1149                 .off1   = td_var_offset(ba[DDIR_READ]),
1150                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1151                 .minval = 1,
1152                 .help   = "IO block offset alignment",
1153                 .parent = "rw",
1154         },
1155         {
1156                 .name   = "bsrange",
1157                 .alias  = "blocksize_range",
1158                 .type   = FIO_OPT_RANGE,
1159                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1160                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1161                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1162                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1163                 .minval = 1,
1164                 .help   = "Set block size range (in more detail than bs)",
1165                 .parent = "rw",
1166         },
1167         {
1168                 .name   = "bssplit",
1169                 .type   = FIO_OPT_STR,
1170                 .cb     = str_bssplit_cb,
1171                 .help   = "Set a specific mix of block sizes",
1172                 .parent = "rw",
1173         },
1174         {
1175                 .name   = "bs_unaligned",
1176                 .alias  = "blocksize_unaligned",
1177                 .type   = FIO_OPT_STR_SET,
1178                 .off1   = td_var_offset(bs_unaligned),
1179                 .help   = "Don't sector align IO buffer sizes",
1180                 .parent = "rw",
1181         },
1182         {
1183                 .name   = "randrepeat",
1184                 .type   = FIO_OPT_BOOL,
1185                 .off1   = td_var_offset(rand_repeatable),
1186                 .help   = "Use repeatable random IO pattern",
1187                 .def    = "1",
1188                 .parent = "rw",
1189         },
1190         {
1191                 .name   = "use_os_rand",
1192                 .type   = FIO_OPT_BOOL,
1193                 .off1   = td_var_offset(use_os_rand),
1194                 .help   = "Set to use OS random generator",
1195                 .def    = "0",
1196                 .parent = "rw",
1197         },
1198         {
1199                 .name   = "norandommap",
1200                 .type   = FIO_OPT_STR_SET,
1201                 .off1   = td_var_offset(norandommap),
1202                 .help   = "Accept potential duplicate random blocks",
1203                 .parent = "rw",
1204         },
1205         {
1206                 .name   = "softrandommap",
1207                 .type   = FIO_OPT_BOOL,
1208                 .off1   = td_var_offset(softrandommap),
1209                 .help   = "Set norandommap if randommap allocation fails",
1210                 .parent = "norandommap",
1211                 .def    = "0",
1212         },
1213         {
1214                 .name   = "nrfiles",
1215                 .alias  = "nr_files",
1216                 .type   = FIO_OPT_INT,
1217                 .off1   = td_var_offset(nr_files),
1218                 .help   = "Split job workload between this number of files",
1219                 .def    = "1",
1220         },
1221         {
1222                 .name   = "openfiles",
1223                 .type   = FIO_OPT_INT,
1224                 .off1   = td_var_offset(open_files),
1225                 .help   = "Number of files to keep open at the same time",
1226         },
1227         {
1228                 .name   = "file_service_type",
1229                 .type   = FIO_OPT_STR,
1230                 .cb     = str_fst_cb,
1231                 .off1   = td_var_offset(file_service_type),
1232                 .help   = "How to select which file to service next",
1233                 .def    = "roundrobin",
1234                 .posval = {
1235                           { .ival = "random",
1236                             .oval = FIO_FSERVICE_RANDOM,
1237                             .help = "Choose a file at random",
1238                           },
1239                           { .ival = "roundrobin",
1240                             .oval = FIO_FSERVICE_RR,
1241                             .help = "Round robin select files",
1242                           },
1243                           { .ival = "sequential",
1244                             .oval = FIO_FSERVICE_SEQ,
1245                             .help = "Finish one file before moving to the next",
1246                           },
1247                 },
1248                 .parent = "nrfiles",
1249         },
1250 #ifdef FIO_HAVE_FALLOCATE
1251         {
1252                 .name   = "fallocate",
1253                 .type   = FIO_OPT_STR,
1254                 .off1   = td_var_offset(fallocate_mode),
1255                 .help   = "Whether pre-allocation is performed when laying out files",
1256                 .def    = "posix",
1257                 .posval = {
1258                           { .ival = "none",
1259                             .oval = FIO_FALLOCATE_NONE,
1260                             .help = "Do not pre-allocate space",
1261                           },
1262                           { .ival = "posix",
1263                             .oval = FIO_FALLOCATE_POSIX,
1264                             .help = "Use posix_fallocate()",
1265                           },
1266 #ifdef FIO_HAVE_LINUX_FALLOCATE
1267                           { .ival = "keep",
1268                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1269                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1270                           },
1271 #endif
1272                           /* Compatibility with former boolean values */
1273                           { .ival = "0",
1274                             .oval = FIO_FALLOCATE_NONE,
1275                             .help = "Alias for 'none'",
1276                           },
1277                           { .ival = "1",
1278                             .oval = FIO_FALLOCATE_POSIX,
1279                             .help = "Alias for 'posix'",
1280                           },
1281                 },
1282         },
1283 #endif  /* FIO_HAVE_FALLOCATE */
1284         {
1285                 .name   = "fadvise_hint",
1286                 .type   = FIO_OPT_BOOL,
1287                 .off1   = td_var_offset(fadvise_hint),
1288                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1289                 .def    = "1",
1290         },
1291         {
1292                 .name   = "fsync",
1293                 .type   = FIO_OPT_INT,
1294                 .off1   = td_var_offset(fsync_blocks),
1295                 .help   = "Issue fsync for writes every given number of blocks",
1296                 .def    = "0",
1297         },
1298         {
1299                 .name   = "fdatasync",
1300                 .type   = FIO_OPT_INT,
1301                 .off1   = td_var_offset(fdatasync_blocks),
1302                 .help   = "Issue fdatasync for writes every given number of blocks",
1303                 .def    = "0",
1304         },
1305         {
1306                 .name   = "write_barrier",
1307                 .type   = FIO_OPT_INT,
1308                 .off1   = td_var_offset(barrier_blocks),
1309                 .help   = "Make every Nth write a barrier write",
1310                 .def    = "0",
1311         },
1312 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1313         {
1314                 .name   = "sync_file_range",
1315                 .posval = {
1316                           { .ival = "wait_before",
1317                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1318                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1319                             .or   = 1,
1320                           },
1321                           { .ival = "write",
1322                             .oval = SYNC_FILE_RANGE_WRITE,
1323                             .help = "SYNC_FILE_RANGE_WRITE",
1324                             .or   = 1,
1325                           },
1326                           {
1327                             .ival = "wait_after",
1328                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1329                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1330                             .or   = 1,
1331                           },
1332                 },
1333                 .type   = FIO_OPT_STR_MULTI,
1334                 .cb     = str_sfr_cb,
1335                 .off1   = td_var_offset(sync_file_range),
1336                 .help   = "Use sync_file_range()",
1337         },
1338 #endif
1339         {
1340                 .name   = "direct",
1341                 .type   = FIO_OPT_BOOL,
1342                 .off1   = td_var_offset(odirect),
1343                 .help   = "Use O_DIRECT IO (negates buffered)",
1344                 .def    = "0",
1345         },
1346         {
1347                 .name   = "buffered",
1348                 .type   = FIO_OPT_BOOL,
1349                 .off1   = td_var_offset(odirect),
1350                 .neg    = 1,
1351                 .help   = "Use buffered IO (negates direct)",
1352                 .def    = "1",
1353         },
1354         {
1355                 .name   = "overwrite",
1356                 .type   = FIO_OPT_BOOL,
1357                 .off1   = td_var_offset(overwrite),
1358                 .help   = "When writing, set whether to overwrite current data",
1359                 .def    = "0",
1360         },
1361         {
1362                 .name   = "loops",
1363                 .type   = FIO_OPT_INT,
1364                 .off1   = td_var_offset(loops),
1365                 .help   = "Number of times to run the job",
1366                 .def    = "1",
1367         },
1368         {
1369                 .name   = "numjobs",
1370                 .type   = FIO_OPT_INT,
1371                 .off1   = td_var_offset(numjobs),
1372                 .help   = "Duplicate this job this many times",
1373                 .def    = "1",
1374         },
1375         {
1376                 .name   = "startdelay",
1377                 .type   = FIO_OPT_STR_VAL_TIME,
1378                 .off1   = td_var_offset(start_delay),
1379                 .help   = "Only start job when this period has passed",
1380                 .def    = "0",
1381         },
1382         {
1383                 .name   = "runtime",
1384                 .alias  = "timeout",
1385                 .type   = FIO_OPT_STR_VAL_TIME,
1386                 .off1   = td_var_offset(timeout),
1387                 .help   = "Stop workload when this amount of time has passed",
1388                 .def    = "0",
1389         },
1390         {
1391                 .name   = "time_based",
1392                 .type   = FIO_OPT_STR_SET,
1393                 .off1   = td_var_offset(time_based),
1394                 .help   = "Keep running until runtime/timeout is met",
1395         },
1396         {
1397                 .name   = "ramp_time",
1398                 .type   = FIO_OPT_STR_VAL_TIME,
1399                 .off1   = td_var_offset(ramp_time),
1400                 .help   = "Ramp up time before measuring performance",
1401         },
1402         {
1403                 .name   = "clocksource",
1404                 .type   = FIO_OPT_STR,
1405                 .cb     = fio_clock_source_cb,
1406                 .off1   = td_var_offset(clocksource),
1407                 .help   = "What type of timing source to use",
1408                 .posval = {
1409                           { .ival = "gettimeofday",
1410                             .oval = CS_GTOD,
1411                             .help = "Use gettimeofday(2) for timing",
1412                           },
1413                           { .ival = "clock_gettime",
1414                             .oval = CS_CGETTIME,
1415                             .help = "Use clock_gettime(2) for timing",
1416                           },
1417 #ifdef ARCH_HAVE_CPU_CLOCK
1418                           { .ival = "cpu",
1419                             .oval = CS_CPUCLOCK,
1420                             .help = "Use CPU private clock",
1421                           },
1422 #endif
1423                 },
1424         },
1425         {
1426                 .name   = "mem",
1427                 .alias  = "iomem",
1428                 .type   = FIO_OPT_STR,
1429                 .cb     = str_mem_cb,
1430                 .off1   = td_var_offset(mem_type),
1431                 .help   = "Backing type for IO buffers",
1432                 .def    = "malloc",
1433                 .posval = {
1434                           { .ival = "malloc",
1435                             .oval = MEM_MALLOC,
1436                             .help = "Use malloc(3) for IO buffers",
1437                           },
1438                           { .ival = "shm",
1439                             .oval = MEM_SHM,
1440                             .help = "Use shared memory segments for IO buffers",
1441                           },
1442 #ifdef FIO_HAVE_HUGETLB
1443                           { .ival = "shmhuge",
1444                             .oval = MEM_SHMHUGE,
1445                             .help = "Like shm, but use huge pages",
1446                           },
1447 #endif
1448                           { .ival = "mmap",
1449                             .oval = MEM_MMAP,
1450                             .help = "Use mmap(2) (file or anon) for IO buffers",
1451                           },
1452 #ifdef FIO_HAVE_HUGETLB
1453                           { .ival = "mmaphuge",
1454                             .oval = MEM_MMAPHUGE,
1455                             .help = "Like mmap, but use huge pages",
1456                           },
1457 #endif
1458                   },
1459         },
1460         {
1461                 .name   = "iomem_align",
1462                 .alias  = "mem_align",
1463                 .type   = FIO_OPT_INT,
1464                 .off1   = td_var_offset(mem_align),
1465                 .minval = 0,
1466                 .help   = "IO memory buffer offset alignment",
1467                 .def    = "0",
1468                 .parent = "iomem",
1469         },
1470         {
1471                 .name   = "verify",
1472                 .type   = FIO_OPT_STR,
1473                 .off1   = td_var_offset(verify),
1474                 .help   = "Verify data written",
1475                 .cb     = str_verify_cb,
1476                 .def    = "0",
1477                 .posval = {
1478                           { .ival = "0",
1479                             .oval = VERIFY_NONE,
1480                             .help = "Don't do IO verification",
1481                           },
1482                           { .ival = "md5",
1483                             .oval = VERIFY_MD5,
1484                             .help = "Use md5 checksums for verification",
1485                           },
1486                           { .ival = "crc64",
1487                             .oval = VERIFY_CRC64,
1488                             .help = "Use crc64 checksums for verification",
1489                           },
1490                           { .ival = "crc32",
1491                             .oval = VERIFY_CRC32,
1492                             .help = "Use crc32 checksums for verification",
1493                           },
1494                           { .ival = "crc32c-intel",
1495                             .oval = VERIFY_CRC32C_INTEL,
1496                             .help = "Use hw crc32c checksums for verification",
1497                           },
1498                           { .ival = "crc32c",
1499                             .oval = VERIFY_CRC32C,
1500                             .help = "Use crc32c checksums for verification",
1501                           },
1502                           { .ival = "crc16",
1503                             .oval = VERIFY_CRC16,
1504                             .help = "Use crc16 checksums for verification",
1505                           },
1506                           { .ival = "crc7",
1507                             .oval = VERIFY_CRC7,
1508                             .help = "Use crc7 checksums for verification",
1509                           },
1510                           { .ival = "sha1",
1511                             .oval = VERIFY_SHA1,
1512                             .help = "Use sha1 checksums for verification",
1513                           },
1514                           { .ival = "sha256",
1515                             .oval = VERIFY_SHA256,
1516                             .help = "Use sha256 checksums for verification",
1517                           },
1518                           { .ival = "sha512",
1519                             .oval = VERIFY_SHA512,
1520                             .help = "Use sha512 checksums for verification",
1521                           },
1522                           { .ival = "meta",
1523                             .oval = VERIFY_META,
1524                             .help = "Use io information",
1525                           },
1526                           {
1527                             .ival = "null",
1528                             .oval = VERIFY_NULL,
1529                             .help = "Pretend to verify",
1530                           },
1531                 },
1532         },
1533         {
1534                 .name   = "do_verify",
1535                 .type   = FIO_OPT_BOOL,
1536                 .off1   = td_var_offset(do_verify),
1537                 .help   = "Run verification stage after write",
1538                 .def    = "1",
1539                 .parent = "verify",
1540         },
1541         {
1542                 .name   = "verifysort",
1543                 .type   = FIO_OPT_BOOL,
1544                 .off1   = td_var_offset(verifysort),
1545                 .help   = "Sort written verify blocks for read back",
1546                 .def    = "1",
1547                 .parent = "verify",
1548         },
1549         {
1550                 .name   = "verify_interval",
1551                 .type   = FIO_OPT_INT,
1552                 .off1   = td_var_offset(verify_interval),
1553                 .minval = 2 * sizeof(struct verify_header),
1554                 .help   = "Store verify buffer header every N bytes",
1555                 .parent = "verify",
1556         },
1557         {
1558                 .name   = "verify_offset",
1559                 .type   = FIO_OPT_INT,
1560                 .help   = "Offset verify header location by N bytes",
1561                 .def    = "0",
1562                 .cb     = str_verify_offset_cb,
1563                 .parent = "verify",
1564         },
1565         {
1566                 .name   = "verify_pattern",
1567                 .type   = FIO_OPT_STR,
1568                 .cb     = str_verify_pattern_cb,
1569                 .help   = "Fill pattern for IO buffers",
1570                 .parent = "verify",
1571         },
1572         {
1573                 .name   = "verify_fatal",
1574                 .type   = FIO_OPT_BOOL,
1575                 .off1   = td_var_offset(verify_fatal),
1576                 .def    = "0",
1577                 .help   = "Exit on a single verify failure, don't continue",
1578                 .parent = "verify",
1579         },
1580         {
1581                 .name   = "verify_dump",
1582                 .type   = FIO_OPT_BOOL,
1583                 .off1   = td_var_offset(verify_dump),
1584                 .def    = "1",
1585                 .help   = "Dump contents of good and bad blocks on failure",
1586                 .parent = "verify",
1587         },
1588         {
1589                 .name   = "verify_async",
1590                 .type   = FIO_OPT_INT,
1591                 .off1   = td_var_offset(verify_async),
1592                 .def    = "0",
1593                 .help   = "Number of async verifier threads to use",
1594                 .parent = "verify",
1595         },
1596         {
1597                 .name   = "verify_backlog",
1598                 .type   = FIO_OPT_STR_VAL,
1599                 .off1   = td_var_offset(verify_backlog),
1600                 .help   = "Verify after this number of blocks are written",
1601                 .parent = "verify",
1602         },
1603         {
1604                 .name   = "verify_backlog_batch",
1605                 .type   = FIO_OPT_INT,
1606                 .off1   = td_var_offset(verify_batch),
1607                 .help   = "Verify this number of IO blocks",
1608                 .parent = "verify",
1609         },
1610 #ifdef FIO_HAVE_CPU_AFFINITY
1611         {
1612                 .name   = "verify_async_cpus",
1613                 .type   = FIO_OPT_STR,
1614                 .cb     = str_verify_cpus_allowed_cb,
1615                 .help   = "Set CPUs allowed for async verify threads",
1616                 .parent = "verify_async",
1617         },
1618 #endif
1619 #ifdef FIO_HAVE_TRIM
1620         {
1621                 .name   = "trim_percentage",
1622                 .type   = FIO_OPT_INT,
1623                 .cb     = str_verify_trim_cb,
1624                 .maxval = 100,
1625                 .help   = "Number of verify blocks to discard/trim",
1626                 .parent = "verify",
1627                 .def    = "0",
1628         },
1629         {
1630                 .name   = "trim_verify_zero",
1631                 .type   = FIO_OPT_INT,
1632                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1633                 .off1   = td_var_offset(trim_zero),
1634                 .parent = "trim_percentage",
1635                 .def    = "1",
1636         },
1637         {
1638                 .name   = "trim_backlog",
1639                 .type   = FIO_OPT_STR_VAL,
1640                 .off1   = td_var_offset(trim_backlog),
1641                 .help   = "Trim after this number of blocks are written",
1642                 .parent = "trim_percentage",
1643         },
1644         {
1645                 .name   = "trim_backlog_batch",
1646                 .type   = FIO_OPT_INT,
1647                 .off1   = td_var_offset(trim_batch),
1648                 .help   = "Trim this number of IO blocks",
1649                 .parent = "trim_percentage",
1650         },
1651 #endif
1652         {
1653                 .name   = "write_iolog",
1654                 .type   = FIO_OPT_STR_STORE,
1655                 .off1   = td_var_offset(write_iolog_file),
1656                 .help   = "Store IO pattern to file",
1657         },
1658         {
1659                 .name   = "read_iolog",
1660                 .type   = FIO_OPT_STR_STORE,
1661                 .off1   = td_var_offset(read_iolog_file),
1662                 .help   = "Playback IO pattern from file",
1663         },
1664         {
1665                 .name   = "replay_no_stall",
1666                 .type   = FIO_OPT_INT,
1667                 .off1   = td_var_offset(no_stall),
1668                 .def    = "0",
1669                 .parent = "read_iolog",
1670                 .help   = "Playback IO pattern file as fast as possible without stalls",
1671         },
1672         {
1673                 .name   = "replay_redirect",
1674                 .type   = FIO_OPT_STR_STORE,
1675                 .off1   = td_var_offset(replay_redirect),
1676                 .parent = "read_iolog",
1677                 .help   = "Replay all I/O onto this device, regardless of trace device",
1678         },
1679         {
1680                 .name   = "exec_prerun",
1681                 .type   = FIO_OPT_STR_STORE,
1682                 .off1   = td_var_offset(exec_prerun),
1683                 .help   = "Execute this file prior to running job",
1684         },
1685         {
1686                 .name   = "exec_postrun",
1687                 .type   = FIO_OPT_STR_STORE,
1688                 .off1   = td_var_offset(exec_postrun),
1689                 .help   = "Execute this file after running job",
1690         },
1691 #ifdef FIO_HAVE_IOSCHED_SWITCH
1692         {
1693                 .name   = "ioscheduler",
1694                 .type   = FIO_OPT_STR_STORE,
1695                 .off1   = td_var_offset(ioscheduler),
1696                 .help   = "Use this IO scheduler on the backing device",
1697         },
1698 #endif
1699         {
1700                 .name   = "zonesize",
1701                 .type   = FIO_OPT_STR_VAL,
1702                 .off1   = td_var_offset(zone_size),
1703                 .help   = "Give size of an IO zone",
1704                 .def    = "0",
1705         },
1706         {
1707                 .name   = "zoneskip",
1708                 .type   = FIO_OPT_STR_VAL,
1709                 .off1   = td_var_offset(zone_skip),
1710                 .help   = "Space between IO zones",
1711                 .def    = "0",
1712         },
1713         {
1714                 .name   = "lockmem",
1715                 .type   = FIO_OPT_STR_VAL,
1716                 .cb     = str_lockmem_cb,
1717                 .help   = "Lock down this amount of memory",
1718                 .def    = "0",
1719         },
1720         {
1721                 .name   = "rwmixread",
1722                 .type   = FIO_OPT_INT,
1723                 .cb     = str_rwmix_read_cb,
1724                 .maxval = 100,
1725                 .help   = "Percentage of mixed workload that is reads",
1726                 .def    = "50",
1727         },
1728         {
1729                 .name   = "rwmixwrite",
1730                 .type   = FIO_OPT_INT,
1731                 .cb     = str_rwmix_write_cb,
1732                 .maxval = 100,
1733                 .help   = "Percentage of mixed workload that is writes",
1734                 .def    = "50",
1735         },
1736         {
1737                 .name   = "rwmixcycle",
1738                 .type   = FIO_OPT_DEPRECATED,
1739         },
1740         {
1741                 .name   = "nice",
1742                 .type   = FIO_OPT_INT,
1743                 .off1   = td_var_offset(nice),
1744                 .help   = "Set job CPU nice value",
1745                 .minval = -19,
1746                 .maxval = 20,
1747                 .def    = "0",
1748         },
1749 #ifdef FIO_HAVE_IOPRIO
1750         {
1751                 .name   = "prio",
1752                 .type   = FIO_OPT_INT,
1753                 .cb     = str_prio_cb,
1754                 .help   = "Set job IO priority value",
1755                 .minval = 0,
1756                 .maxval = 7,
1757         },
1758         {
1759                 .name   = "prioclass",
1760                 .type   = FIO_OPT_INT,
1761                 .cb     = str_prioclass_cb,
1762                 .help   = "Set job IO priority class",
1763                 .minval = 0,
1764                 .maxval = 3,
1765         },
1766 #endif
1767         {
1768                 .name   = "thinktime",
1769                 .type   = FIO_OPT_INT,
1770                 .off1   = td_var_offset(thinktime),
1771                 .help   = "Idle time between IO buffers (usec)",
1772                 .def    = "0",
1773         },
1774         {
1775                 .name   = "thinktime_spin",
1776                 .type   = FIO_OPT_INT,
1777                 .off1   = td_var_offset(thinktime_spin),
1778                 .help   = "Start think time by spinning this amount (usec)",
1779                 .def    = "0",
1780                 .parent = "thinktime",
1781         },
1782         {
1783                 .name   = "thinktime_blocks",
1784                 .type   = FIO_OPT_INT,
1785                 .off1   = td_var_offset(thinktime_blocks),
1786                 .help   = "IO buffer period between 'thinktime'",
1787                 .def    = "1",
1788                 .parent = "thinktime",
1789         },
1790         {
1791                 .name   = "rate",
1792                 .type   = FIO_OPT_INT,
1793                 .off1   = td_var_offset(rate[0]),
1794                 .off2   = td_var_offset(rate[1]),
1795                 .help   = "Set bandwidth rate",
1796         },
1797         {
1798                 .name   = "ratemin",
1799                 .type   = FIO_OPT_INT,
1800                 .off1   = td_var_offset(ratemin[0]),
1801                 .off2   = td_var_offset(ratemin[1]),
1802                 .help   = "Job must meet this rate or it will be shutdown",
1803                 .parent = "rate",
1804         },
1805         {
1806                 .name   = "rate_iops",
1807                 .type   = FIO_OPT_INT,
1808                 .off1   = td_var_offset(rate_iops[0]),
1809                 .off2   = td_var_offset(rate_iops[1]),
1810                 .help   = "Limit IO used to this number of IO operations/sec",
1811         },
1812         {
1813                 .name   = "rate_iops_min",
1814                 .type   = FIO_OPT_INT,
1815                 .off1   = td_var_offset(rate_iops_min[0]),
1816                 .off2   = td_var_offset(rate_iops_min[1]),
1817                 .help   = "Job must meet this rate or it will be shut down",
1818                 .parent = "rate_iops",
1819         },
1820         {
1821                 .name   = "ratecycle",
1822                 .type   = FIO_OPT_INT,
1823                 .off1   = td_var_offset(ratecycle),
1824                 .help   = "Window average for rate limits (msec)",
1825                 .def    = "1000",
1826                 .parent = "rate",
1827         },
1828         {
1829                 .name   = "invalidate",
1830                 .type   = FIO_OPT_BOOL,
1831                 .off1   = td_var_offset(invalidate_cache),
1832                 .help   = "Invalidate buffer/page cache prior to running job",
1833                 .def    = "1",
1834         },
1835         {
1836                 .name   = "sync",
1837                 .type   = FIO_OPT_BOOL,
1838                 .off1   = td_var_offset(sync_io),
1839                 .help   = "Use O_SYNC for buffered writes",
1840                 .def    = "0",
1841                 .parent = "buffered",
1842         },
1843         {
1844                 .name   = "bwavgtime",
1845                 .type   = FIO_OPT_INT,
1846                 .off1   = td_var_offset(bw_avg_time),
1847                 .help   = "Time window over which to calculate bandwidth"
1848                           " (msec)",
1849                 .def    = "500",
1850                 .parent = "write_bw_log",
1851         },
1852         {
1853                 .name   = "iopsavgtime",
1854                 .type   = FIO_OPT_INT,
1855                 .off1   = td_var_offset(iops_avg_time),
1856                 .help   = "Time window over which to calculate IOPS (msec)",
1857                 .def    = "500",
1858                 .parent = "write_iops_log",
1859         },
1860         {
1861                 .name   = "create_serialize",
1862                 .type   = FIO_OPT_BOOL,
1863                 .off1   = td_var_offset(create_serialize),
1864                 .help   = "Serialize creating of job files",
1865                 .def    = "1",
1866         },
1867         {
1868                 .name   = "create_fsync",
1869                 .type   = FIO_OPT_BOOL,
1870                 .off1   = td_var_offset(create_fsync),
1871                 .help   = "fsync file after creation",
1872                 .def    = "1",
1873         },
1874         {
1875                 .name   = "create_on_open",
1876                 .type   = FIO_OPT_BOOL,
1877                 .off1   = td_var_offset(create_on_open),
1878                 .help   = "Create files when they are opened for IO",
1879                 .def    = "0",
1880         },
1881         {
1882                 .name   = "pre_read",
1883                 .type   = FIO_OPT_BOOL,
1884                 .off1   = td_var_offset(pre_read),
1885                 .help   = "Pre-read files before starting official testing",
1886                 .def    = "0",
1887         },
1888         {
1889                 .name   = "cpuload",
1890                 .type   = FIO_OPT_INT,
1891                 .off1   = td_var_offset(cpuload),
1892                 .help   = "Use this percentage of CPU",
1893         },
1894         {
1895                 .name   = "cpuchunks",
1896                 .type   = FIO_OPT_INT,
1897                 .off1   = td_var_offset(cpucycle),
1898                 .help   = "Length of the CPU burn cycles (usecs)",
1899                 .def    = "50000",
1900                 .parent = "cpuload",
1901         },
1902 #ifdef FIO_HAVE_CPU_AFFINITY
1903         {
1904                 .name   = "cpumask",
1905                 .type   = FIO_OPT_INT,
1906                 .cb     = str_cpumask_cb,
1907                 .help   = "CPU affinity mask",
1908         },
1909         {
1910                 .name   = "cpus_allowed",
1911                 .type   = FIO_OPT_STR,
1912                 .cb     = str_cpus_allowed_cb,
1913                 .help   = "Set CPUs allowed",
1914         },
1915 #endif
1916         {
1917                 .name   = "end_fsync",
1918                 .type   = FIO_OPT_BOOL,
1919                 .off1   = td_var_offset(end_fsync),
1920                 .help   = "Include fsync at the end of job",
1921                 .def    = "0",
1922         },
1923         {
1924                 .name   = "fsync_on_close",
1925                 .type   = FIO_OPT_BOOL,
1926                 .off1   = td_var_offset(fsync_on_close),
1927                 .help   = "fsync files on close",
1928                 .def    = "0",
1929         },
1930         {
1931                 .name   = "unlink",
1932                 .type   = FIO_OPT_BOOL,
1933                 .off1   = td_var_offset(unlink),
1934                 .help   = "Unlink created files after job has completed",
1935                 .def    = "0",
1936         },
1937         {
1938                 .name   = "exitall",
1939                 .type   = FIO_OPT_STR_SET,
1940                 .cb     = str_exitall_cb,
1941                 .help   = "Terminate all jobs when one exits",
1942         },
1943         {
1944                 .name   = "stonewall",
1945                 .alias  = "wait_for_previous",
1946                 .type   = FIO_OPT_STR_SET,
1947                 .off1   = td_var_offset(stonewall),
1948                 .help   = "Insert a hard barrier between this job and previous",
1949         },
1950         {
1951                 .name   = "new_group",
1952                 .type   = FIO_OPT_STR_SET,
1953                 .off1   = td_var_offset(new_group),
1954                 .help   = "Mark the start of a new group (for reporting)",
1955         },
1956         {
1957                 .name   = "thread",
1958                 .type   = FIO_OPT_STR_SET,
1959                 .off1   = td_var_offset(use_thread),
1960                 .help   = "Use threads instead of forks",
1961         },
1962         {
1963                 .name   = "write_bw_log",
1964                 .type   = FIO_OPT_STR,
1965                 .off1   = td_var_offset(write_bw_log),
1966                 .cb     = str_write_bw_log_cb,
1967                 .help   = "Write log of bandwidth during run",
1968         },
1969         {
1970                 .name   = "write_lat_log",
1971                 .type   = FIO_OPT_STR,
1972                 .off1   = td_var_offset(write_lat_log),
1973                 .cb     = str_write_lat_log_cb,
1974                 .help   = "Write log of latency during run",
1975         },
1976         {
1977                 .name   = "write_iops_log",
1978                 .type   = FIO_OPT_STR,
1979                 .off1   = td_var_offset(write_iops_log),
1980                 .cb     = str_write_iops_log_cb,
1981                 .help   = "Write log of IOPS during run",
1982         },
1983         {
1984                 .name   = "hugepage-size",
1985                 .type   = FIO_OPT_INT,
1986                 .off1   = td_var_offset(hugepage_size),
1987                 .help   = "When using hugepages, specify size of each page",
1988                 .def    = __fio_stringify(FIO_HUGE_PAGE),
1989         },
1990         {
1991                 .name   = "group_reporting",
1992                 .type   = FIO_OPT_STR_SET,
1993                 .off1   = td_var_offset(group_reporting),
1994                 .help   = "Do reporting on a per-group basis",
1995         },
1996         {
1997                 .name   = "zero_buffers",
1998                 .type   = FIO_OPT_STR_SET,
1999                 .off1   = td_var_offset(zero_buffers),
2000                 .help   = "Init IO buffers to all zeroes",
2001         },
2002         {
2003                 .name   = "refill_buffers",
2004                 .type   = FIO_OPT_STR_SET,
2005                 .off1   = td_var_offset(refill_buffers),
2006                 .help   = "Refill IO buffers on every IO submit",
2007         },
2008         {
2009                 .name   = "scramble_buffers",
2010                 .type   = FIO_OPT_BOOL,
2011                 .off1   = td_var_offset(scramble_buffers),
2012                 .help   = "Slightly scramble buffers on every IO submit",
2013                 .def    = "1",
2014         },
2015         {
2016                 .name   = "clat_percentiles",
2017                 .type   = FIO_OPT_BOOL,
2018                 .off1   = td_var_offset(clat_percentiles),
2019                 .help   = "Enable the reporting of completion latency percentiles",
2020                 .def    = "1",
2021         },
2022         {
2023                 .name   = "percentile_list",
2024                 .type   = FIO_OPT_FLOAT_LIST,
2025                 .off1   = td_var_offset(percentile_list),
2026                 .off2   = td_var_offset(overwrite_plist),
2027                 .help   = "Specify a custom list of percentiles to report",
2028                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2029                 .minfp  = 0.0,
2030                 .maxfp  = 100.0,
2031         },
2032
2033 #ifdef FIO_HAVE_DISK_UTIL
2034         {
2035                 .name   = "disk_util",
2036                 .type   = FIO_OPT_BOOL,
2037                 .off1   = td_var_offset(do_disk_util),
2038                 .help   = "Log disk utilization statistics",
2039                 .def    = "1",
2040         },
2041 #endif
2042         {
2043                 .name   = "gtod_reduce",
2044                 .type   = FIO_OPT_BOOL,
2045                 .help   = "Greatly reduce number of gettimeofday() calls",
2046                 .cb     = str_gtod_reduce_cb,
2047                 .def    = "0",
2048         },
2049         {
2050                 .name   = "disable_lat",
2051                 .type   = FIO_OPT_BOOL,
2052                 .off1   = td_var_offset(disable_lat),
2053                 .help   = "Disable latency numbers",
2054                 .parent = "gtod_reduce",
2055                 .def    = "0",
2056         },
2057         {
2058                 .name   = "disable_clat",
2059                 .type   = FIO_OPT_BOOL,
2060                 .off1   = td_var_offset(disable_clat),
2061                 .help   = "Disable completion latency numbers",
2062                 .parent = "gtod_reduce",
2063                 .def    = "0",
2064         },
2065         {
2066                 .name   = "disable_slat",
2067                 .type   = FIO_OPT_BOOL,
2068                 .off1   = td_var_offset(disable_slat),
2069                 .help   = "Disable submission latency numbers",
2070                 .parent = "gtod_reduce",
2071                 .def    = "0",
2072         },
2073         {
2074                 .name   = "disable_bw_measurement",
2075                 .type   = FIO_OPT_BOOL,
2076                 .off1   = td_var_offset(disable_bw),
2077                 .help   = "Disable bandwidth logging",
2078                 .parent = "gtod_reduce",
2079                 .def    = "0",
2080         },
2081         {
2082                 .name   = "gtod_cpu",
2083                 .type   = FIO_OPT_INT,
2084                 .cb     = str_gtod_cpu_cb,
2085                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2086                 .verify = gtod_cpu_verify,
2087         },
2088         {
2089                 .name   = "continue_on_error",
2090                 .type   = FIO_OPT_BOOL,
2091                 .off1   = td_var_offset(continue_on_error),
2092                 .help   = "Continue on non-fatal errors during IO",
2093                 .def    = "0",
2094         },
2095         {
2096                 .name   = "profile",
2097                 .type   = FIO_OPT_STR_STORE,
2098                 .off1   = td_var_offset(profile),
2099                 .help   = "Select a specific builtin performance test",
2100         },
2101         {
2102                 .name   = "cgroup",
2103                 .type   = FIO_OPT_STR_STORE,
2104                 .off1   = td_var_offset(cgroup),
2105                 .help   = "Add job to cgroup of this name",
2106         },
2107         {
2108                 .name   = "cgroup_weight",
2109                 .type   = FIO_OPT_INT,
2110                 .off1   = td_var_offset(cgroup_weight),
2111                 .help   = "Use given weight for cgroup",
2112                 .minval = 100,
2113                 .maxval = 1000,
2114         },
2115         {
2116                 .name   = "cgroup_nodelete",
2117                 .type   = FIO_OPT_BOOL,
2118                 .off1   = td_var_offset(cgroup_nodelete),
2119                 .help   = "Do not delete cgroups after job completion",
2120                 .def    = "0",
2121         },
2122         {
2123                 .name   = "uid",
2124                 .type   = FIO_OPT_INT,
2125                 .off1   = td_var_offset(uid),
2126                 .help   = "Run job with this user ID",
2127         },
2128         {
2129                 .name   = "gid",
2130                 .type   = FIO_OPT_INT,
2131                 .off1   = td_var_offset(gid),
2132                 .help   = "Run job with this group ID",
2133         },
2134         {
2135                 .name = NULL,
2136         },
2137 };
2138
2139 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2140                         const char *name)
2141 {
2142         lopt->name = (char *) name;
2143         lopt->val = FIO_GETOPT_JOB;
2144         if (o->type == FIO_OPT_STR_SET)
2145                 lopt->has_arg = no_argument;
2146         else
2147                 lopt->has_arg = required_argument;
2148 }
2149
2150 void fio_options_dup_and_init(struct option *long_options)
2151 {
2152         struct fio_option *o;
2153         unsigned int i;
2154
2155         options_init(options);
2156
2157         i = 0;
2158         while (long_options[i].name)
2159                 i++;
2160
2161         o = &options[0];
2162         while (o->name) {
2163                 add_to_lopt(&long_options[i], o, o->name);
2164                 if (o->alias) {
2165                         i++;
2166                         add_to_lopt(&long_options[i], o, o->alias);
2167                 }
2168
2169                 i++;
2170                 o++;
2171                 assert(i < FIO_NR_OPTIONS);
2172         }
2173 }
2174
2175 struct fio_keyword {
2176         const char *word;
2177         const char *desc;
2178         char *replace;
2179 };
2180
2181 static struct fio_keyword fio_keywords[] = {
2182         {
2183                 .word   = "$pagesize",
2184                 .desc   = "Page size in the system",
2185         },
2186         {
2187                 .word   = "$mb_memory",
2188                 .desc   = "Megabytes of memory online",
2189         },
2190         {
2191                 .word   = "$ncpus",
2192                 .desc   = "Number of CPUs online in the system",
2193         },
2194         {
2195                 .word   = NULL,
2196         },
2197 };
2198
2199 void fio_keywords_init(void)
2200 {
2201         unsigned long long mb_memory;
2202         char buf[128];
2203         long l;
2204
2205         sprintf(buf, "%lu", page_size);
2206         fio_keywords[0].replace = strdup(buf);
2207
2208         mb_memory = os_phys_mem() / (1024 * 1024);
2209         sprintf(buf, "%llu", mb_memory);
2210         fio_keywords[1].replace = strdup(buf);
2211
2212         l = cpus_online();
2213         sprintf(buf, "%lu", l);
2214         fio_keywords[2].replace = strdup(buf);
2215 }
2216
2217 #define BC_APP          "bc"
2218
2219 static char *bc_calc(char *str)
2220 {
2221         char *buf, *tmp, opt[80];
2222         FILE *f;
2223         int ret;
2224
2225         /*
2226          * No math, just return string
2227          */
2228         if (!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2229             !strchr(str, '/'))
2230                 return str;
2231
2232         /*
2233          * Split option from value, we only need to calculate the value
2234          */
2235         tmp = strchr(str, '=');
2236         if (!tmp)
2237                 return str;
2238
2239         tmp++;
2240         memset(opt, 0, sizeof(opt));
2241         strncpy(opt, str, tmp - str);
2242
2243         buf = malloc(128);
2244
2245         sprintf(buf, "which %s > /dev/null", BC_APP);
2246         if (system(buf)) {
2247                 log_err("fio: bc is needed for performing math\n");
2248                 free(buf);
2249                 return NULL;
2250         }
2251
2252         sprintf(buf, "echo %s | %s", tmp, BC_APP);
2253         f = popen(buf, "r");
2254         if (!f) {
2255                 free(buf);
2256                 return NULL;
2257         }
2258
2259         ret = fread(buf, 1, 128, f);
2260         if (ret <= 0) {
2261                 free(buf);
2262                 return NULL;
2263         }
2264
2265         buf[ret - 1] = '\0';
2266         strcat(opt, buf);
2267         strcpy(buf, opt);
2268         pclose(f);
2269         free(str);
2270         return buf;
2271 }
2272
2273 /*
2274  * Look for reserved variable names and replace them with real values
2275  */
2276 static char *fio_keyword_replace(char *opt)
2277 {
2278         char *s;
2279         int i;
2280
2281         for (i = 0; fio_keywords[i].word != NULL; i++) {
2282                 struct fio_keyword *kw = &fio_keywords[i];
2283
2284                 while ((s = strstr(opt, kw->word)) != NULL) {
2285                         char *new = malloc(strlen(opt) + 1);
2286                         char *o_org = opt;
2287                         int olen = s - opt;
2288                         int len;
2289
2290                         /*
2291                          * Copy part of the string before the keyword and
2292                          * sprintf() the replacement after it.
2293                          */
2294                         memcpy(new, opt, olen);
2295                         len = sprintf(new + olen, "%s", kw->replace);
2296
2297                         /*
2298                          * If there's more in the original string, copy that
2299                          * in too
2300                          */
2301                         opt += strlen(kw->word) + olen;
2302                         if (strlen(opt))
2303                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2304
2305                         /*
2306                          * replace opt and free the old opt
2307                          */
2308                         opt = new;
2309                         //free(o_org);
2310
2311                         /*
2312                          * Check for potential math and invoke bc, if possible
2313                          */
2314                         opt = bc_calc(opt);
2315                 }
2316         }
2317
2318         return opt;
2319 }
2320
2321 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2322 {
2323         int i, ret;
2324
2325         sort_options(opts, options, num_opts);
2326
2327         for (ret = 0, i = 0; i < num_opts; i++) {
2328                 opts[i] = fio_keyword_replace(opts[i]);
2329                 ret |= parse_option(opts[i], options, td);
2330         }
2331
2332         return ret;
2333 }
2334
2335 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2336 {
2337         return parse_cmd_option(opt, val, options, td);
2338 }
2339
2340 void fio_fill_default_options(struct thread_data *td)
2341 {
2342         fill_default_options(td, options);
2343 }
2344
2345 int fio_show_option_help(const char *opt)
2346 {
2347         return show_cmd_help(options, opt);
2348 }
2349
2350 /*
2351  * dupe FIO_OPT_STR_STORE options
2352  */
2353 void options_mem_dupe(struct thread_data *td)
2354 {
2355         struct thread_options *o = &td->o;
2356         struct fio_option *opt;
2357         char **ptr;
2358         int i;
2359
2360         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
2361                 if (opt->type != FIO_OPT_STR_STORE)
2362                         continue;
2363
2364                 ptr = (void *) o + opt->off1;
2365                 if (!*ptr)
2366                         ptr = td_var(o, opt->off1);
2367                 if (*ptr)
2368                         *ptr = strdup(*ptr);
2369         }
2370 }
2371
2372 unsigned int fio_get_kb_base(void *data)
2373 {
2374         struct thread_data *td = data;
2375         unsigned int kb_base = 0;
2376
2377         if (td)
2378                 kb_base = td->o.kb_base;
2379         if (!kb_base)
2380                 kb_base = 1024;
2381
2382         return kb_base;
2383 }
2384
2385 int add_option(struct fio_option *o)
2386 {
2387         struct fio_option *__o;
2388         int opt_index = 0;
2389
2390         __o = options;
2391         while (__o->name) {
2392                 opt_index++;
2393                 __o++;
2394         }
2395
2396         memcpy(&options[opt_index], o, sizeof(*o));
2397         return 0;
2398 }
2399
2400 void invalidate_profile_options(const char *prof_name)
2401 {
2402         struct fio_option *o;
2403
2404         o = options;
2405         while (o->name) {
2406                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
2407                         o->type = FIO_OPT_INVALID;
2408                         o->prof_name = NULL;
2409                 }
2410                 o++;
2411         }
2412 }
2413
2414 void add_opt_posval(const char *optname, const char *ival, const char *help)
2415 {
2416         struct fio_option *o;
2417         unsigned int i;
2418
2419         o = find_option(options, optname);
2420         if (!o)
2421                 return;
2422
2423         for (i = 0; i < PARSE_MAX_VP; i++) {
2424                 if (o->posval[i].ival)
2425                         continue;
2426
2427                 o->posval[i].ival = ival;
2428                 o->posval[i].help = help;
2429                 break;
2430         }
2431 }
2432
2433 void del_opt_posval(const char *optname, const char *ival)
2434 {
2435         struct fio_option *o;
2436         unsigned int i;
2437
2438         o = find_option(options, optname);
2439         if (!o)
2440                 return;
2441
2442         for (i = 0; i < PARSE_MAX_VP; i++) {
2443                 if (!o->posval[i].ival)
2444                         continue;
2445                 if (strcmp(o->posval[i].ival, ival))
2446                         continue;
2447
2448                 o->posval[i].ival = NULL;
2449                 o->posval[i].help = NULL;
2450         }
2451 }
2452
2453 void fio_options_free(struct thread_data *td)
2454 {
2455         options_free(options, td);
2456 }