init.c

   1 /*
   2  * This file contains job initialization and setup functions.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <ctype.h>
   8 #include <string.h>
   9 #include <errno.h>
  10 #include <sys/ipc.h>
  11 #include <sys/types.h>
  12 #include <dlfcn.h>
  13 #ifdef CONFIG_VALGRIND_DEV
  14 #include <valgrind/drd.h>
  15 #else
  16 #define DRD_IGNORE_VAR(x) do { } while (0)
  17 #endif
  18
  19 #include "fio.h"
  20 #ifndef FIO_NO_HAVE_SHM_H
  21 #include <sys/shm.h>
  22 #endif
  23
  24 #include "parse.h"
  25 #include "smalloc.h"
  26 #include "filehash.h"
  27 #include "verify.h"
  28 #include "profile.h"
  29 #include "server.h"
  30 #include "idletime.h"
  31 #include "filelock.h"
  32 #include "steadystate.h"
  33 #include "blktrace.h"
  34
  35 #include "oslib/asprintf.h"
  36 #include "oslib/getopt.h"
  37 #include "oslib/strcasestr.h"
  38
  39 #include "crc/test.h"
  40 #include "lib/pow2.h"
  41 #include "lib/memcpy.h"
  42
  43 const char fio_version_string[] = FIO_VERSION;
  44
  45 #define FIO_RANDSEED            (0xb1899bedUL)
  46
  47 static char **ini_file;
  48 static int max_jobs = FIO_MAX_JOBS;
  49 static bool dump_cmdline;
  50 static bool parse_only;
  51 static bool merge_blktrace_only;
  52
  53 static struct thread_data def_thread;
  54 struct thread_segment segments[REAL_MAX_SEG];
  55 static char **job_sections;
  56 static int nr_job_sections;
  57
  58 bool exitall_on_terminate = false;
  59 int output_format = FIO_OUTPUT_NORMAL;
  60 int eta_print = FIO_ETA_AUTO;
  61 unsigned int eta_interval_msec = 1000;
  62 int eta_new_line = 0;
  63 FILE *f_out = NULL;
  64 FILE *f_err = NULL;
  65 char *exec_profile = NULL;
  66 int warnings_fatal = 0;
  67 int terse_version = 3;
  68 bool is_backend = false;
  69 bool is_local_backend = false;
  70 int nr_clients = 0;
  71 bool log_syslog = false;
  72
  73 bool write_bw_log = false;
  74 bool read_only = false;
  75 int status_interval = 0;
  76
  77 char *trigger_file = NULL;
  78 long long trigger_timeout = 0;
  79 char *trigger_cmd = NULL;
  80 char *trigger_remote_cmd = NULL;
  81
  82 char *aux_path = NULL;
  83
  84 static int prev_group_jobs;
  85
  86 unsigned long fio_debug = 0;
  87 unsigned int fio_debug_jobno = -1;
  88 unsigned int *fio_debug_jobp = NULL;
  89 unsigned int *fio_warned = NULL;
  90
  91 static char cmd_optstr[256];
  92 static bool did_arg;
  93
  94 #define FIO_CLIENT_FLAG         (1 << 16)
  95
  96 /*
  97  * Command line options. These will contain the above, plus a few
  98  * extra that only pertain to fio itself and not jobs.
  99  */
 100 static struct option l_opts[FIO_NR_OPTIONS] = {
 101         {
 102                 .name           = (char *) "output",
 103                 .has_arg        = required_argument,
 104                 .val            = 'o' | FIO_CLIENT_FLAG,
 105         },
 106         {
 107                 .name           = (char *) "latency-log",
 108                 .has_arg        = required_argument,
 109                 .val            = 'l' | FIO_CLIENT_FLAG,
 110         },
 111         {
 112                 .name           = (char *) "bandwidth-log",
 113                 .has_arg        = no_argument,
 114                 .val            = 'b' | FIO_CLIENT_FLAG,
 115         },
 116         {
 117                 .name           = (char *) "minimal",
 118                 .has_arg        = no_argument,
 119                 .val            = 'm' | FIO_CLIENT_FLAG,
 120         },
 121         {
 122                 .name           = (char *) "output-format",
 123                 .has_arg        = required_argument,
 124                 .val            = 'F' | FIO_CLIENT_FLAG,
 125         },
 126         {
 127                 .name           = (char *) "append-terse",
 128                 .has_arg        = optional_argument,
 129                 .val            = 'f',
 130         },
 131         {
 132                 .name           = (char *) "version",
 133                 .has_arg        = no_argument,
 134                 .val            = 'v' | FIO_CLIENT_FLAG,
 135         },
 136         {
 137                 .name           = (char *) "help",
 138                 .has_arg        = no_argument,
 139                 .val            = 'h' | FIO_CLIENT_FLAG,
 140         },
 141         {
 142                 .name           = (char *) "cmdhelp",
 143                 .has_arg        = optional_argument,
 144                 .val            = 'c' | FIO_CLIENT_FLAG,
 145         },
 146         {
 147                 .name           = (char *) "enghelp",
 148                 .has_arg        = optional_argument,
 149                 .val            = 'i' | FIO_CLIENT_FLAG,
 150         },
 151         {
 152                 .name           = (char *) "showcmd",
 153                 .has_arg        = no_argument,
 154                 .val            = 's' | FIO_CLIENT_FLAG,
 155         },
 156         {
 157                 .name           = (char *) "readonly",
 158                 .has_arg        = no_argument,
 159                 .val            = 'r' | FIO_CLIENT_FLAG,
 160         },
 161         {
 162                 .name           = (char *) "eta",
 163                 .has_arg        = required_argument,
 164                 .val            = 'e' | FIO_CLIENT_FLAG,
 165         },
 166         {
 167                 .name           = (char *) "eta-interval",
 168                 .has_arg        = required_argument,
 169                 .val            = 'O' | FIO_CLIENT_FLAG,
 170         },
 171         {
 172                 .name           = (char *) "eta-newline",
 173                 .has_arg        = required_argument,
 174                 .val            = 'E' | FIO_CLIENT_FLAG,
 175         },
 176         {
 177                 .name           = (char *) "debug",
 178                 .has_arg        = required_argument,
 179                 .val            = 'd' | FIO_CLIENT_FLAG,
 180         },
 181         {
 182                 .name           = (char *) "parse-only",
 183                 .has_arg        = no_argument,
 184                 .val            = 'P' | FIO_CLIENT_FLAG,
 185         },
 186         {
 187                 .name           = (char *) "section",
 188                 .has_arg        = required_argument,
 189                 .val            = 'x' | FIO_CLIENT_FLAG,
 190         },
 191 #ifdef CONFIG_ZLIB
 192         {
 193                 .name           = (char *) "inflate-log",
 194                 .has_arg        = required_argument,
 195                 .val            = 'X' | FIO_CLIENT_FLAG,
 196         },
 197 #endif
 198         {
 199                 .name           = (char *) "alloc-size",
 200                 .has_arg        = required_argument,
 201                 .val            = 'a' | FIO_CLIENT_FLAG,
 202         },
 203         {
 204                 .name           = (char *) "profile",
 205                 .has_arg        = required_argument,
 206                 .val            = 'p' | FIO_CLIENT_FLAG,
 207         },
 208         {
 209                 .name           = (char *) "warnings-fatal",
 210                 .has_arg        = no_argument,
 211                 .val            = 'w' | FIO_CLIENT_FLAG,
 212         },
 213         {
 214                 .name           = (char *) "max-jobs",
 215                 .has_arg        = required_argument,
 216                 .val            = 'j' | FIO_CLIENT_FLAG,
 217         },
 218         {
 219                 .name           = (char *) "terse-version",
 220                 .has_arg        = required_argument,
 221                 .val            = 'V' | FIO_CLIENT_FLAG,
 222         },
 223         {
 224                 .name           = (char *) "server",
 225                 .has_arg        = optional_argument,
 226                 .val            = 'S',
 227         },
 228         {       .name           = (char *) "daemonize",
 229                 .has_arg        = required_argument,
 230                 .val            = 'D',
 231         },
 232         {
 233                 .name           = (char *) "client",
 234                 .has_arg        = required_argument,
 235                 .val            = 'C',
 236         },
 237         {
 238                 .name           = (char *) "remote-config",
 239                 .has_arg        = required_argument,
 240                 .val            = 'R',
 241         },
 242         {
 243                 .name           = (char *) "cpuclock-test",
 244                 .has_arg        = no_argument,
 245                 .val            = 'T',
 246         },
 247         {
 248                 .name           = (char *) "crctest",
 249                 .has_arg        = optional_argument,
 250                 .val            = 'G',
 251         },
 252         {
 253                 .name           = (char *) "memcpytest",
 254                 .has_arg        = optional_argument,
 255                 .val            = 'M',
 256         },
 257         {
 258                 .name           = (char *) "idle-prof",
 259                 .has_arg        = required_argument,
 260                 .val            = 'I',
 261         },
 262         {
 263                 .name           = (char *) "status-interval",
 264                 .has_arg        = required_argument,
 265                 .val            = 'L' | FIO_CLIENT_FLAG,
 266         },
 267         {
 268                 .name           = (char *) "trigger-file",
 269                 .has_arg        = required_argument,
 270                 .val            = 'W',
 271         },
 272         {
 273                 .name           = (char *) "trigger-timeout",
 274                 .has_arg        = required_argument,
 275                 .val            = 'B',
 276         },
 277         {
 278                 .name           = (char *) "trigger",
 279                 .has_arg        = required_argument,
 280                 .val            = 'H',
 281         },
 282         {
 283                 .name           = (char *) "trigger-remote",
 284                 .has_arg        = required_argument,
 285                 .val            = 'J',
 286         },
 287         {
 288                 .name           = (char *) "aux-path",
 289                 .has_arg        = required_argument,
 290                 .val            = 'K',
 291         },
 292         {
 293                 .name           = (char *) "merge-blktrace-only",
 294                 .has_arg        = no_argument,
 295                 .val            = 'A' | FIO_CLIENT_FLAG,
 296         },
 297         {
 298                 .name           = NULL,
 299         },
 300 };
 301
 302 void free_threads_shm(void)
 303 {
 304         int i;
 305
 306         for (i = 0; i < nr_segments; i++) {
 307                 struct thread_segment *seg = &segments[i];
 308
 309                 if (seg->threads) {
 310                         void *tp = seg->threads;
 311 #ifndef CONFIG_NO_SHM
 312                         struct shmid_ds sbuf;
 313
 314                         seg->threads = NULL;
 315                         shmdt(tp);
 316                         shmctl(seg->shm_id, IPC_RMID, &sbuf);
 317                         seg->shm_id = -1;
 318 #else
 319                         seg->threads = NULL;
 320                         free(tp);
 321 #endif
 322                 }
 323         }
 324
 325         nr_segments = 0;
 326         cur_segment = 0;
 327 }
 328
 329 static void free_shm(void)
 330 {
 331         if (nr_segments) {
 332                 flow_exit();
 333                 fio_debug_jobp = NULL;
 334                 fio_warned = NULL;
 335                 free_threads_shm();
 336         }
 337
 338         free(trigger_file);
 339         free(trigger_cmd);
 340         free(trigger_remote_cmd);
 341         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 342
 343         options_free(fio_options, &def_thread.o);
 344         fio_filelock_exit();
 345         file_hash_exit();
 346         scleanup();
 347 }
 348
 349 static int add_thread_segment(void)
 350 {
 351         struct thread_segment *seg = &segments[nr_segments];
 352         size_t size = JOBS_PER_SEG * sizeof(struct thread_data);
 353         int i;
 354
 355         if (nr_segments + 1 >= REAL_MAX_SEG)
 356                 return -1;
 357
 358         size += 2 * sizeof(unsigned int);
 359
 360 #ifndef CONFIG_NO_SHM
 361         seg->shm_id = shmget(0, size, IPC_CREAT | 0600);
 362         if (seg->shm_id == -1) {
 363                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC)
 364                         perror("shmget");
 365                 return -1;
 366         }
 367 #else
 368         seg->threads = malloc(size);
 369         if (!seg->threads)
 370                 return -1;
 371 #endif
 372
 373 #ifndef CONFIG_NO_SHM
 374         seg->threads = shmat(seg->shm_id, NULL, 0);
 375         if (seg->threads == (void *) -1) {
 376                 perror("shmat");
 377                 return 1;
 378         }
 379         if (shm_attach_to_open_removed())
 380                 shmctl(seg->shm_id, IPC_RMID, NULL);
 381 #endif
 382
 383         nr_segments++;
 384
 385         memset(seg->threads, 0, JOBS_PER_SEG * sizeof(struct thread_data));
 386         for (i = 0; i < JOBS_PER_SEG; i++)
 387                 DRD_IGNORE_VAR(seg->threads[i]);
 388         seg->nr_threads = 0;
 389
 390         /* Not first segment, we're done */
 391         if (nr_segments != 1) {
 392                 cur_segment++;
 393                 return 0;
 394         }
 395
 396         fio_debug_jobp = (unsigned int *)(seg->threads + JOBS_PER_SEG);
 397         *fio_debug_jobp = -1;
 398         fio_warned = fio_debug_jobp + 1;
 399         *fio_warned = 0;
 400
 401         flow_init();
 402         return 0;
 403 }
 404
 405 /*
 406  * The thread areas are shared between the main process and the job
 407  * threads/processes, and is split into chunks of JOBS_PER_SEG. If the current
 408  * segment has no more room, add a new chunk.
 409  */
 410 static int expand_thread_area(void)
 411 {
 412         struct thread_segment *seg = &segments[cur_segment];
 413
 414         if (nr_segments && seg->nr_threads < JOBS_PER_SEG)
 415                 return 0;
 416
 417         return add_thread_segment();
 418 }
 419
 420 static void dump_print_option(struct print_option *p)
 421 {
 422         const char *delim;
 423
 424         if (!strcmp("description", p->name))
 425                 delim = "\"";
 426         else
 427                 delim = "";
 428
 429         log_info("--%s%s", p->name, p->value ? "" : " ");
 430         if (p->value)
 431                 log_info("=%s%s%s ", delim, p->value, delim);
 432 }
 433
 434 static void dump_opt_list(struct thread_data *td)
 435 {
 436         struct flist_head *entry;
 437         struct print_option *p;
 438
 439         if (flist_empty(&td->opt_list))
 440                 return;
 441
 442         flist_for_each(entry, &td->opt_list) {
 443                 p = flist_entry(entry, struct print_option, list);
 444                 dump_print_option(p);
 445         }
 446 }
 447
 448 static void fio_dump_options_free(struct thread_data *td)
 449 {
 450         while (!flist_empty(&td->opt_list)) {
 451                 struct print_option *p;
 452
 453                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 454                 flist_del_init(&p->list);
 455                 free(p->name);
 456                 free(p->value);
 457                 free(p);
 458         }
 459 }
 460
 461 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 462 {
 463         struct flist_head *entry;
 464
 465         if (flist_empty(&src->opt_list))
 466                 return;
 467
 468         flist_for_each(entry, &src->opt_list) {
 469                 struct print_option *srcp, *dstp;
 470
 471                 srcp = flist_entry(entry, struct print_option, list);
 472                 dstp = malloc(sizeof(*dstp));
 473                 dstp->name = strdup(srcp->name);
 474                 if (srcp->value)
 475                         dstp->value = strdup(srcp->value);
 476                 else
 477                         dstp->value = NULL;
 478                 flist_add_tail(&dstp->list, &dst->opt_list);
 479         }
 480 }
 481
 482 /*
 483  * Return a free job structure.
 484  */
 485 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 486                                        bool preserve_eo, const char *jobname)
 487 {
 488         struct thread_segment *seg;
 489         struct thread_data *td;
 490
 491         if (global)
 492                 return &def_thread;
 493         if (expand_thread_area()) {
 494                 log_err("error: failed to setup shm segment\n");
 495                 return NULL;
 496         }
 497         if (thread_number >= max_jobs) {
 498                 log_err("error: maximum number of jobs (%d) reached.\n",
 499                                 max_jobs);
 500                 return NULL;
 501         }
 502
 503         seg = &segments[cur_segment];
 504         td = &seg->threads[seg->nr_threads++];
 505         thread_number++;
 506         *td = *parent;
 507
 508         INIT_FLIST_HEAD(&td->opt_list);
 509         if (parent != &def_thread)
 510                 copy_opt_list(td, parent);
 511
 512         td->io_ops = NULL;
 513         td->io_ops_init = 0;
 514         if (!preserve_eo)
 515                 td->eo = NULL;
 516
 517         td->o.uid = td->o.gid = -1U;
 518
 519         dup_files(td, parent);
 520         fio_options_mem_dupe(td);
 521
 522         profile_add_hooks(td);
 523
 524         td->thread_number = thread_number;
 525         td->subjob_number = 0;
 526
 527         if (jobname)
 528                 td->o.name = strdup(jobname);
 529
 530         if (!parent->o.group_reporting || parent == &def_thread)
 531                 stat_number++;
 532
 533         return td;
 534 }
 535
 536 static void put_job(struct thread_data *td)
 537 {
 538         if (td == &def_thread)
 539                 return;
 540
 541         profile_td_exit(td);
 542         flow_exit_job(td);
 543
 544         if (td->error)
 545                 log_info("fio: %s\n", td->verror);
 546
 547         fio_options_free(td);
 548         fio_dump_options_free(td);
 549         if (td->io_ops)
 550                 free_ioengine(td);
 551
 552         if (td->o.name)
 553                 free(td->o.name);
 554
 555         memset(td, 0, sizeof(*td));
 556         segments[cur_segment].nr_threads--;
 557         thread_number--;
 558 }
 559
 560 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 561 {
 562         unsigned long long bs = td->o.min_bs[ddir];
 563
 564         assert(ddir_rw(ddir));
 565
 566         if (td->o.rate[ddir])
 567                 td->rate_bps[ddir] = td->o.rate[ddir];
 568         else
 569                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 570
 571         if (!td->rate_bps[ddir]) {
 572                 log_err("rate lower than supported\n");
 573                 return -1;
 574         }
 575
 576         td->rate_next_io_time[ddir] = 0;
 577         td->rate_io_issue_bytes[ddir] = 0;
 578         td->last_usec[ddir] = 0;
 579         return 0;
 580 }
 581
 582 static int setup_rate(struct thread_data *td)
 583 {
 584         int ret = 0;
 585
 586         for_each_rw_ddir(ddir) {
 587                 if (td->o.rate[ddir] || td->o.rate_iops[ddir]) {
 588                         ret |= __setup_rate(td, ddir);
 589                 }
 590         }
 591         return ret;
 592 }
 593
 594 static int fixed_block_size(struct thread_options *o)
 595 {
 596         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 597                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 598                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 599                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 600                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 601 }
 602
 603 /*
 604  * <3 Johannes
 605  */
 606 static unsigned int gcd(unsigned int m, unsigned int n)
 607 {
 608         if (!n)
 609                 return m;
 610
 611         return gcd(n, m % n);
 612 }
 613
 614 /*
 615  * Lazy way of fixing up options that depend on each other. We could also
 616  * define option callback handlers, but this is easier.
 617  */
 618 static int fixup_options(struct thread_data *td)
 619 {
 620         struct thread_options *o = &td->o;
 621         int ret = 0;
 622
 623         if (read_only && (td_write(td) || td_trim(td))) {
 624                 log_err("fio: trim and write operations are not allowed"
 625                          " with the --readonly parameter.\n");
 626                 ret |= 1;
 627         }
 628
 629 #ifndef CONFIG_PSHARED
 630         if (!o->use_thread) {
 631                 log_info("fio: this platform does not support process shared"
 632                          " mutexes, forcing use of threads. Use the 'thread'"
 633                          " option to get rid of this warning.\n");
 634                 o->use_thread = 1;
 635                 ret |= warnings_fatal;
 636         }
 637 #endif
 638
 639         if (o->write_iolog_file && o->read_iolog_file) {
 640                 log_err("fio: read iolog overrides write_iolog\n");
 641                 free(o->write_iolog_file);
 642                 o->write_iolog_file = NULL;
 643                 ret |= warnings_fatal;
 644         }
 645
 646         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
 647                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
 648                 ret |= 1;
 649         }
 650
 651         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
 652                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
 653                 ret |= 1;
 654         }
 655
 656         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
 657                 if (o->zone_size)
 658                         o->zone_mode = ZONE_MODE_STRIDED;
 659                 else
 660                         o->zone_mode = ZONE_MODE_NONE;
 661         }
 662
 663         /*
 664          * Strided zone mode only really works with 1 file.
 665          */
 666         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
 667                 o->zone_mode = ZONE_MODE_NONE;
 668
 669         /*
 670          * If zone_range isn't specified, backward compatibility dictates it
 671          * should be made equal to zone_size.
 672          */
 673         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
 674                 o->zone_range = o->zone_size;
 675
 676         /*
 677          * Reads can do overwrites, we always need to pre-create the file
 678          */
 679         if (td_read(td))
 680                 o->overwrite = 1;
 681
 682         for_each_rw_ddir(ddir) {
 683                 if (!o->min_bs[ddir])
 684                         o->min_bs[ddir] = o->bs[ddir];
 685                 if (!o->max_bs[ddir])
 686                         o->max_bs[ddir] = o->bs[ddir];
 687         }
 688
 689         o->rw_min_bs = -1;
 690         for_each_rw_ddir(ddir) {
 691                 o->rw_min_bs = min(o->rw_min_bs, o->min_bs[ddir]);
 692         }
 693
 694         /*
 695          * For random IO, allow blockalign offset other than min_bs.
 696          */
 697         for_each_rw_ddir(ddir) {
 698                 if (!o->ba[ddir] || !td_random(td))
 699                         o->ba[ddir] = o->min_bs[ddir];
 700         }
 701
 702         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 703             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 704             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 705             !o->norandommap) {
 706                 log_err("fio: Any use of blockalign= turns off randommap\n");
 707                 o->norandommap = 1;
 708                 ret |= warnings_fatal;
 709         }
 710
 711         if (!o->file_size_high)
 712                 o->file_size_high = o->file_size_low;
 713
 714         if (o->start_delay_high) {
 715                 if (!o->start_delay_orig)
 716                         o->start_delay_orig = o->start_delay;
 717                 o->start_delay = rand_between(&td->delay_state,
 718                                                 o->start_delay_orig,
 719                                                 o->start_delay_high);
 720         }
 721
 722         if (o->norandommap && o->verify != VERIFY_NONE
 723             && !fixed_block_size(o))  {
 724                 log_err("fio: norandommap given for variable block sizes, "
 725                         "verify limited\n");
 726                 ret |= warnings_fatal;
 727         }
 728         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 729                 log_err("fio: bs_unaligned may not work with raw io\n");
 730
 731         /*
 732          * thinktime_spin must be less than thinktime
 733          */
 734         if (o->thinktime_spin > o->thinktime)
 735                 o->thinktime_spin = o->thinktime;
 736
 737         /*
 738          * The low water mark cannot be bigger than the iodepth
 739          */
 740         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 741                 o->iodepth_low = o->iodepth;
 742
 743         /*
 744          * If batch number isn't set, default to the same as iodepth
 745          */
 746         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 747                 o->iodepth_batch = o->iodepth;
 748
 749         /*
 750          * If max batch complete number isn't set or set incorrectly,
 751          * default to the same as iodepth_batch_complete_min
 752          */
 753         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 754                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 755
 756         /*
 757          * There's no need to check for in-flight overlapping IOs if the job
 758          * isn't changing data or the maximum iodepth is guaranteed to be 1
 759          * when we are not in offload mode
 760          */
 761         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 762             (!(td_write(td) || td_trim(td)) || o->iodepth == 1) &&
 763             o->io_submit_mode != IO_MODE_OFFLOAD)
 764                 o->serialize_overlap = 0;
 765
 766         if (o->nr_files > td->files_index)
 767                 o->nr_files = td->files_index;
 768
 769         if (o->open_files > o->nr_files || !o->open_files)
 770                 o->open_files = o->nr_files;
 771
 772         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 773             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 774             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 775             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 776                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 777                 ret |= 1;
 778         }
 779         for_each_rw_ddir(ddir) {
 780                 if ((o->rate[ddir] && (o->rate[ddir] < o->ratemin[ddir])) ||
 781                     (o->rate_iops[ddir] && (o->rate_iops[ddir] < o->rate_iops_min[ddir]))) {
 782                         log_err("fio: minimum rate exceeds rate, ddir %d\n", +ddir);
 783                         ret |= 1;
 784                 }
 785         }
 786
 787         if (!o->timeout && o->time_based) {
 788                 log_err("fio: time_based requires a runtime/timeout setting\n");
 789                 o->time_based = 0;
 790                 ret |= warnings_fatal;
 791         }
 792
 793         if (o->fill_device && !o->size)
 794                 o->size = -1ULL;
 795
 796         if (o->verify != VERIFY_NONE) {
 797                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 798                     (o->filename ||
 799                      !(o->unique_filename &&
 800                        strstr(o->filename_format, "$jobname") &&
 801                        strstr(o->filename_format, "$jobnum") &&
 802                        strstr(o->filename_format, "$filenum")))) {
 803                         log_info("fio: multiple writers may overwrite blocks "
 804                                 "that belong to other jobs. This can cause "
 805                                 "verification failures.\n");
 806                         ret |= warnings_fatal;
 807                 }
 808
 809                 /*
 810                  * Warn if verification is requested but no verification of any
 811                  * kind can be started due to time constraints
 812                  */
 813                 if (td_write(td) && o->do_verify && o->timeout &&
 814                     o->time_based && !td_read(td) && !o->verify_backlog) {
 815                         log_info("fio: verification read phase will never "
 816                                  "start because write phase uses all of "
 817                                  "runtime\n");
 818                         ret |= warnings_fatal;
 819                 }
 820
 821                 if (!fio_option_is_set(o, refill_buffers))
 822                         o->refill_buffers = 1;
 823
 824                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 825                     !o->verify_interval)
 826                         o->verify_interval = o->min_bs[DDIR_WRITE];
 827
 828                 /*
 829                  * Verify interval must be smaller or equal to the
 830                  * write size.
 831                  */
 832                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 833                         o->verify_interval = o->min_bs[DDIR_WRITE];
 834                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 835                         o->verify_interval = o->min_bs[DDIR_READ];
 836
 837                 /*
 838                  * Verify interval must be a factor of both min and max
 839                  * write size
 840                  */
 841                 if (!o->verify_interval ||
 842                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 843                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 844                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 845                                                         o->max_bs[DDIR_WRITE]);
 846         }
 847
 848         if (o->pre_read) {
 849                 if (o->invalidate_cache)
 850                         o->invalidate_cache = 0;
 851                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 852                         log_info("fio: cannot pre-read files with an IO engine"
 853                                  " that isn't seekable. Pre-read disabled.\n");
 854                         ret |= warnings_fatal;
 855                 }
 856         }
 857
 858         if (o->unit_base == N2S_NONE) {
 859                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 860                         o->unit_base = N2S_BITPERSEC;
 861                 else
 862                         o->unit_base = N2S_BYTEPERSEC;
 863         }
 864
 865 #ifndef CONFIG_FDATASYNC
 866         if (o->fdatasync_blocks) {
 867                 log_info("fio: this platform does not support fdatasync()"
 868                          " falling back to using fsync().  Use the 'fsync'"
 869                          " option instead of 'fdatasync' to get rid of"
 870                          " this warning\n");
 871                 o->fsync_blocks = o->fdatasync_blocks;
 872                 o->fdatasync_blocks = 0;
 873                 ret |= warnings_fatal;
 874         }
 875 #endif
 876
 877 #ifdef WIN32
 878         /*
 879          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 880          * so fail if we're passed those flags
 881          */
 882         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 883                 log_err("fio: Windows does not support direct or non-buffered io with"
 884                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 885                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 886                 ret |= 1;
 887         }
 888 #endif
 889
 890         /*
 891          * For fully compressible data, just zero them at init time.
 892          * It's faster than repeatedly filling it. For non-zero
 893          * compression, we should have refill_buffers set. Set it, unless
 894          * the job file already changed it.
 895          */
 896         if (o->compress_percentage) {
 897                 if (o->compress_percentage == 100) {
 898                         o->zero_buffers = 1;
 899                         o->compress_percentage = 0;
 900                 } else if (!fio_option_is_set(o, refill_buffers)) {
 901                         o->refill_buffers = 1;
 902                         td->flags |= TD_F_REFILL_BUFFERS;
 903                 }
 904         }
 905
 906         /*
 907          * Using a non-uniform random distribution excludes usage of
 908          * a random map
 909          */
 910         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 911                 o->norandommap = 1;
 912
 913         /*
 914          * If size is set but less than the min block size, complain
 915          */
 916         if (o->size && o->size < td_min_bs(td)) {
 917                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 918                         (unsigned long long) o->size, td_min_bs(td));
 919                 ret |= 1;
 920         }
 921
 922         /*
 923          * O_ATOMIC implies O_DIRECT
 924          */
 925         if (o->oatomic)
 926                 o->odirect = 1;
 927
 928         /*
 929          * If randseed is set, that overrides randrepeat
 930          */
 931         if (fio_option_is_set(o, rand_seed))
 932                 o->rand_repeatable = 0;
 933
 934         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 935                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 936                 ret |= 1;
 937         }
 938
 939         if (fio_option_is_set(o, gtod_cpu)) {
 940                 fio_gtod_init();
 941                 fio_gtod_set_cpu(o->gtod_cpu);
 942                 fio_gtod_offload = 1;
 943         }
 944
 945         td->loops = o->loops;
 946         if (!td->loops)
 947                 td->loops = 1;
 948
 949         if (o->block_error_hist && o->nr_files != 1) {
 950                 log_err("fio: block error histogram only available "
 951                         "with a single file per job, but %d files "
 952                         "provided\n", o->nr_files);
 953                 ret |= 1;
 954         }
 955
 956         if (o->disable_lat)
 957                 o->lat_percentiles = 0;
 958         if (o->disable_clat)
 959                 o->clat_percentiles = 0;
 960         if (o->disable_slat)
 961                 o->slat_percentiles = 0;
 962
 963         /*
 964          * Fix these up to be nsec internally
 965          */
 966         o->max_latency *= 1000ULL;
 967         o->latency_target *= 1000ULL;
 968
 969         return ret;
 970 }
 971
 972 static void init_rand_file_service(struct thread_data *td)
 973 {
 974         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 975         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 976
 977         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 978                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 979                 zipf_disable_hash(&td->next_file_zipf);
 980         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 981                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 982                 zipf_disable_hash(&td->next_file_zipf);
 983         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 984                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 985                 gauss_disable_hash(&td->next_file_gauss);
 986         }
 987 }
 988
 989 void td_fill_verify_state_seed(struct thread_data *td)
 990 {
 991         bool use64;
 992
 993         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 994                 use64 = true;
 995         else
 996                 use64 = false;
 997
 998         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
 999                 use64);
1000 }
1001
1002 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
1003 {
1004         uint64_t read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
1005         uint64_t write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
1006         uint64_t trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
1007         int i;
1008
1009         /*
1010          * trimwrite is special in that we need to generate the same
1011          * offsets to get the "write after trim" effect. If we are
1012          * using bssplit to set buffer length distributions, ensure that
1013          * we seed the trim and write generators identically. Ditto for
1014          * verify, read and writes must have the same seed, if we are doing
1015          * read verify.
1016          */
1017         if (td->o.verify != VERIFY_NONE)
1018                 write_seed = read_seed;
1019         if (td_trimwrite(td))
1020                 trim_seed = write_seed;
1021         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1022         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1023         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1024
1025         td_fill_verify_state_seed(td);
1026         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1027
1028         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1029                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1030         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1031                 init_rand_file_service(td);
1032
1033         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1034         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1035         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1036         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1037         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1038         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1039         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1040         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1041         init_rand_seed(&td->prio_state, td->rand_seeds[FIO_RAND_PRIO_CMDS], false);
1042
1043         if (!td_random(td))
1044                 return;
1045
1046         if (td->o.rand_repeatable)
1047                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1048
1049         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1050
1051         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1052                 struct frand_state *s = &td->seq_rand_state[i];
1053
1054                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1055         }
1056 }
1057
1058 void td_fill_rand_seeds(struct thread_data *td)
1059 {
1060         bool use64;
1061
1062         if (td->o.allrand_repeatable) {
1063                 unsigned int i;
1064
1065                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1066                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1067                                 + i;
1068         }
1069
1070         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1071                 use64 = true;
1072         else
1073                 use64 = false;
1074
1075         td_fill_rand_seeds_internal(td, use64);
1076
1077         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1078         frand_copy(&td->buf_state_prev, &td->buf_state);
1079 }
1080
1081 /*
1082  * Initializes the ioengine configured for a job, if it has not been done so
1083  * already.
1084  */
1085 int ioengine_load(struct thread_data *td)
1086 {
1087         if (!td->o.ioengine) {
1088                 log_err("fio: internal fault, no IO engine specified\n");
1089                 return 1;
1090         }
1091
1092         if (td->io_ops) {
1093                 struct ioengine_ops *ops;
1094                 void *dlhandle;
1095
1096                 /* An engine is loaded, but the requested ioengine
1097                  * may have changed.
1098                  */
1099                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1100                         /* The right engine is already loaded */
1101                         return 0;
1102                 }
1103
1104                 /*
1105                  * Name of file and engine may be different, load ops
1106                  * for this name and see if they match. If they do, then
1107                  * the engine is unchanged.
1108                  */
1109                 dlhandle = td->io_ops_dlhandle;
1110                 ops = load_ioengine(td);
1111                 if (!ops)
1112                         goto fail;
1113
1114                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1115                         if (dlhandle)
1116                                 dlclose(dlhandle);
1117                         return 0;
1118                 }
1119
1120                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1121                         dlclose(dlhandle);
1122
1123                 /* Unload the old engine. */
1124                 free_ioengine(td);
1125         }
1126
1127         td->io_ops = load_ioengine(td);
1128         if (!td->io_ops)
1129                 goto fail;
1130
1131         if (td->io_ops->option_struct_size && td->io_ops->options) {
1132                 /*
1133                  * In cases where td->eo is set, clone it for a child thread.
1134                  * This requires that the parent thread has the same ioengine,
1135                  * but that requirement must be enforced by the code which
1136                  * cloned the thread.
1137                  */
1138                 void *origeo = td->eo;
1139                 /*
1140                  * Otherwise use the default thread options.
1141                  */
1142                 if (!origeo && td != &def_thread && def_thread.eo &&
1143                     def_thread.io_ops->options == td->io_ops->options)
1144                         origeo = def_thread.eo;
1145
1146                 options_init(td->io_ops->options);
1147                 td->eo = malloc(td->io_ops->option_struct_size);
1148                 /*
1149                  * Use the default thread as an option template if this uses the
1150                  * same options structure and there are non-default options
1151                  * used.
1152                  */
1153                 if (origeo) {
1154                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1155                         options_mem_dupe(td->io_ops->options, td->eo);
1156                 } else {
1157                         memset(td->eo, 0, td->io_ops->option_struct_size);
1158                         fill_default_options(td->eo, td->io_ops->options);
1159                 }
1160                 *(struct thread_data **)td->eo = td;
1161         }
1162
1163         if (td->o.odirect)
1164                 td->io_ops->flags |= FIO_RAWIO;
1165
1166         td_set_ioengine_flags(td);
1167         return 0;
1168
1169 fail:
1170         log_err("fio: failed to load engine\n");
1171         return 1;
1172
1173 }
1174
1175 static void init_flags(struct thread_data *td)
1176 {
1177         struct thread_options *o = &td->o;
1178         int i;
1179
1180         if (o->verify_backlog)
1181                 td->flags |= TD_F_VER_BACKLOG;
1182         if (o->trim_backlog)
1183                 td->flags |= TD_F_TRIM_BACKLOG;
1184         if (o->read_iolog_file)
1185                 td->flags |= TD_F_READ_IOLOG;
1186         if (o->refill_buffers)
1187                 td->flags |= TD_F_REFILL_BUFFERS;
1188         /*
1189          * Always scramble buffers if asked to
1190          */
1191         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1192                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1193         /*
1194          * But also scramble buffers, unless we were explicitly asked
1195          * to zero them.
1196          */
1197         if (o->scramble_buffers && !(o->zero_buffers &&
1198             fio_option_is_set(o, zero_buffers)))
1199                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1200         if (o->verify != VERIFY_NONE)
1201                 td->flags |= TD_F_DO_VERIFY;
1202
1203         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1204                 td->flags |= TD_F_NEED_LOCK;
1205
1206         if (o->mem_type == MEM_CUDA_MALLOC)
1207                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1208
1209         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1210                 if (option_check_rate(td, i)) {
1211                         td->flags |= TD_F_CHECK_RATE;
1212                         break;
1213                 }
1214         }
1215 }
1216
1217 static int setup_random_seeds(struct thread_data *td)
1218 {
1219         uint64_t seed;
1220         unsigned int i;
1221
1222         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1223                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1224                 if (!ret)
1225                         td_fill_rand_seeds(td);
1226                 return ret;
1227         }
1228
1229         seed = td->o.rand_seed;
1230         for (i = 0; i < 4; i++)
1231                 seed *= 0x9e370001UL;
1232
1233         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1234                 td->rand_seeds[i] = seed * td->thread_number + i;
1235                 seed *= 0x9e370001UL;
1236         }
1237
1238         td_fill_rand_seeds(td);
1239         return 0;
1240 }
1241
1242 enum {
1243         FPRE_NONE = 0,
1244         FPRE_JOBNAME,
1245         FPRE_JOBNUM,
1246         FPRE_FILENUM
1247 };
1248
1249 static struct fpre_keyword {
1250         const char *keyword;
1251         size_t strlen;
1252         int key;
1253 } fpre_keywords[] = {
1254         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1255         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1256         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1257         { .keyword = NULL, },
1258         };
1259
1260 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1261                            const char *jobname, int jobnum, int filenum)
1262 {
1263         struct fpre_keyword *f;
1264         char copy[PATH_MAX];
1265         size_t dst_left = PATH_MAX - 1;
1266
1267         if (!o->filename_format || !strlen(o->filename_format)) {
1268                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1269                 return buf;
1270         }
1271
1272         for (f = &fpre_keywords[0]; f->keyword; f++)
1273                 f->strlen = strlen(f->keyword);
1274
1275         snprintf(buf, buf_size, "%s", o->filename_format);
1276
1277         memset(copy, 0, sizeof(copy));
1278         for (f = &fpre_keywords[0]; f->keyword; f++) {
1279                 do {
1280                         size_t pre_len, post_start = 0;
1281                         char *str, *dst = copy;
1282
1283                         str = strcasestr(buf, f->keyword);
1284                         if (!str)
1285                                 break;
1286
1287                         pre_len = str - buf;
1288                         if (strlen(str) != f->strlen)
1289                                 post_start = pre_len + f->strlen;
1290
1291                         if (pre_len) {
1292                                 strncpy(dst, buf, pre_len);
1293                                 dst += pre_len;
1294                                 dst_left -= pre_len;
1295                         }
1296
1297                         switch (f->key) {
1298                         case FPRE_JOBNAME: {
1299                                 int ret;
1300
1301                                 ret = snprintf(dst, dst_left, "%s", jobname);
1302                                 if (ret < 0)
1303                                         break;
1304                                 else if (ret > dst_left) {
1305                                         log_err("fio: truncated filename\n");
1306                                         dst += dst_left;
1307                                         dst_left = 0;
1308                                 } else {
1309                                         dst += ret;
1310                                         dst_left -= ret;
1311                                 }
1312                                 break;
1313                                 }
1314                         case FPRE_JOBNUM: {
1315                                 int ret;
1316
1317                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1318                                 if (ret < 0)
1319                                         break;
1320                                 else if (ret > dst_left) {
1321                                         log_err("fio: truncated filename\n");
1322                                         dst += dst_left;
1323                                         dst_left = 0;
1324                                 } else {
1325                                         dst += ret;
1326                                         dst_left -= ret;
1327                                 }
1328                                 break;
1329                                 }
1330                         case FPRE_FILENUM: {
1331                                 int ret;
1332
1333                                 ret = snprintf(dst, dst_left, "%d", filenum);
1334                                 if (ret < 0)
1335                                         break;
1336                                 else if (ret > dst_left) {
1337                                         log_err("fio: truncated filename\n");
1338                                         dst += dst_left;
1339                                         dst_left = 0;
1340                                 } else {
1341                                         dst += ret;
1342                                         dst_left -= ret;
1343                                 }
1344                                 break;
1345                                 }
1346                         default:
1347                                 assert(0);
1348                                 break;
1349                         }
1350
1351                         if (post_start)
1352                                 strncpy(dst, buf + post_start, dst_left);
1353
1354                         snprintf(buf, buf_size, "%s", copy);
1355                 } while (1);
1356         }
1357
1358         return buf;
1359 }
1360
1361 bool parse_dryrun(void)
1362 {
1363         return dump_cmdline || parse_only;
1364 }
1365
1366 static void gen_log_name(char *name, size_t size, const char *logtype,
1367                          const char *logname, unsigned int num,
1368                          const char *suf, int per_job)
1369 {
1370         if (per_job)
1371                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1372         else
1373                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1374 }
1375
1376 static int check_waitees(char *waitee)
1377 {
1378         struct thread_data *td;
1379         int i, ret = 0;
1380
1381         for_each_td(td, i) {
1382                 if (td->subjob_number)
1383                         continue;
1384
1385                 ret += !strcmp(td->o.name, waitee);
1386         }
1387
1388         return ret;
1389 }
1390
1391 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1392 {
1393         int nw;
1394
1395         if (!o->wait_for)
1396                 return true;
1397
1398         if (!strcmp(jobname, o->wait_for)) {
1399                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1400                                 jobname, o->wait_for);
1401                 return false;
1402         }
1403
1404         if (!(nw = check_waitees(o->wait_for))) {
1405                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1406                 return false;
1407         }
1408
1409         if (nw > 1) {
1410                 log_err("%s: multiple waitees %s found,\n"
1411                         "please avoid duplicates when using wait_for option.\n",
1412                                 jobname, o->wait_for);
1413                 return false;
1414         }
1415
1416         return true;
1417 }
1418
1419 /*
1420  * Treat an empty log file name the same as a one not given
1421  */
1422 static const char *make_log_name(const char *logname, const char *jobname)
1423 {
1424         if (logname && strcmp(logname, ""))
1425                 return logname;
1426
1427         return jobname;
1428 }
1429
1430 /*
1431  * Adds a job to the list of things todo. Sanitizes the various options
1432  * to make sure we don't have conflicts, and initializes various
1433  * members of td.
1434  */
1435 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1436                    int recursed, int client_type)
1437 {
1438         unsigned int i;
1439         char fname[PATH_MAX + 1];
1440         int numjobs, file_alloced;
1441         struct thread_options *o = &td->o;
1442         char logname[PATH_MAX + 32];
1443
1444         /*
1445          * the def_thread is just for options, it's not a real job
1446          */
1447         if (td == &def_thread)
1448                 return 0;
1449
1450         init_flags(td);
1451
1452         /*
1453          * if we are just dumping the output command line, don't add the job
1454          */
1455         if (parse_dryrun()) {
1456                 put_job(td);
1457                 return 0;
1458         }
1459
1460         td->client_type = client_type;
1461
1462         if (profile_td_init(td))
1463                 goto err;
1464
1465         if (ioengine_load(td))
1466                 goto err;
1467
1468         file_alloced = 0;
1469         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1470                 file_alloced = 1;
1471
1472                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1473                         add_file(td, jobname, job_add_num, 0);
1474                 else {
1475                         for (i = 0; i < o->nr_files; i++)
1476                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1477                 }
1478         }
1479
1480         if (setup_random_seeds(td)) {
1481                 td_verror(td, errno, "setup_random_seeds");
1482                 goto err;
1483         }
1484
1485         if (fixup_options(td))
1486                 goto err;
1487
1488         /*
1489          * Belongs to fixup_options, but o->name is not necessarily set as yet
1490          */
1491         if (!wait_for_ok(jobname, o))
1492                 goto err;
1493
1494         flow_init_job(td);
1495
1496         /*
1497          * IO engines only need this for option callbacks, and the address may
1498          * change in subprocesses.
1499          */
1500         if (td->eo)
1501                 *(struct thread_data **)td->eo = NULL;
1502
1503         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1504                 struct fio_file *f;
1505
1506                 for_each_file(td, f, i)
1507                         f->real_file_size = -1ULL;
1508         }
1509
1510         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1511
1512         td->ts.clat_percentiles = o->clat_percentiles;
1513         td->ts.lat_percentiles = o->lat_percentiles;
1514         td->ts.slat_percentiles = o->slat_percentiles;
1515         td->ts.percentile_precision = o->percentile_precision;
1516         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1517         td->ts.sig_figs = o->sig_figs;
1518
1519         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1520                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1521                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1522                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1523                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1524                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1525                 td->ts.clat_high_prio_stat[i].min_val = ULONG_MAX;
1526                 td->ts.clat_low_prio_stat[i].min_val = ULONG_MAX;
1527         }
1528         td->ts.sync_stat.min_val = ULONG_MAX;
1529         td->ddir_seq_nr = o->ddir_seq_nr;
1530
1531         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1532                 prev_group_jobs = 0;
1533                 groupid++;
1534                 if (groupid == INT_MAX) {
1535                         log_err("fio: too many groups defined\n");
1536                         goto err;
1537                 }
1538         }
1539
1540         td->groupid = groupid;
1541         prev_group_jobs++;
1542
1543         if (setup_rate(td))
1544                 goto err;
1545
1546         if (o->write_lat_log) {
1547                 struct log_params p = {
1548                         .td = td,
1549                         .avg_msec = o->log_avg_msec,
1550                         .hist_msec = o->log_hist_msec,
1551                         .hist_coarseness = o->log_hist_coarseness,
1552                         .log_type = IO_LOG_TYPE_LAT,
1553                         .log_offset = o->log_offset,
1554                         .log_gz = o->log_gz,
1555                         .log_gz_store = o->log_gz_store,
1556                 };
1557                 const char *pre = make_log_name(o->lat_log_file, o->name);
1558                 const char *suf;
1559
1560                 if (p.log_gz_store)
1561                         suf = "log.fz";
1562                 else
1563                         suf = "log";
1564
1565                 gen_log_name(logname, sizeof(logname), "lat", pre,
1566                                 td->thread_number, suf, o->per_job_logs);
1567                 setup_log(&td->lat_log, &p, logname);
1568
1569                 gen_log_name(logname, sizeof(logname), "slat", pre,
1570                                 td->thread_number, suf, o->per_job_logs);
1571                 setup_log(&td->slat_log, &p, logname);
1572
1573                 gen_log_name(logname, sizeof(logname), "clat", pre,
1574                                 td->thread_number, suf, o->per_job_logs);
1575                 setup_log(&td->clat_log, &p, logname);
1576
1577         }
1578
1579         if (o->write_hist_log) {
1580                 struct log_params p = {
1581                         .td = td,
1582                         .avg_msec = o->log_avg_msec,
1583                         .hist_msec = o->log_hist_msec,
1584                         .hist_coarseness = o->log_hist_coarseness,
1585                         .log_type = IO_LOG_TYPE_HIST,
1586                         .log_offset = o->log_offset,
1587                         .log_gz = o->log_gz,
1588                         .log_gz_store = o->log_gz_store,
1589                 };
1590                 const char *pre = make_log_name(o->hist_log_file, o->name);
1591                 const char *suf;
1592
1593 #ifndef CONFIG_ZLIB
1594                 if (td->client_type) {
1595                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1596                         goto err;
1597                 }
1598 #endif
1599
1600                 if (p.log_gz_store)
1601                         suf = "log.fz";
1602                 else
1603                         suf = "log";
1604
1605                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1606                                 td->thread_number, suf, o->per_job_logs);
1607                 setup_log(&td->clat_hist_log, &p, logname);
1608         }
1609
1610         if (o->write_bw_log) {
1611                 struct log_params p = {
1612                         .td = td,
1613                         .avg_msec = o->log_avg_msec,
1614                         .hist_msec = o->log_hist_msec,
1615                         .hist_coarseness = o->log_hist_coarseness,
1616                         .log_type = IO_LOG_TYPE_BW,
1617                         .log_offset = o->log_offset,
1618                         .log_gz = o->log_gz,
1619                         .log_gz_store = o->log_gz_store,
1620                 };
1621                 const char *pre = make_log_name(o->bw_log_file, o->name);
1622                 const char *suf;
1623
1624                 if (fio_option_is_set(o, bw_avg_time))
1625                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1626                 else
1627                         o->bw_avg_time = p.avg_msec;
1628
1629                 p.hist_msec = o->log_hist_msec;
1630                 p.hist_coarseness = o->log_hist_coarseness;
1631
1632                 if (p.log_gz_store)
1633                         suf = "log.fz";
1634                 else
1635                         suf = "log";
1636
1637                 gen_log_name(logname, sizeof(logname), "bw", pre,
1638                                 td->thread_number, suf, o->per_job_logs);
1639                 setup_log(&td->bw_log, &p, logname);
1640         }
1641         if (o->write_iops_log) {
1642                 struct log_params p = {
1643                         .td = td,
1644                         .avg_msec = o->log_avg_msec,
1645                         .hist_msec = o->log_hist_msec,
1646                         .hist_coarseness = o->log_hist_coarseness,
1647                         .log_type = IO_LOG_TYPE_IOPS,
1648                         .log_offset = o->log_offset,
1649                         .log_gz = o->log_gz,
1650                         .log_gz_store = o->log_gz_store,
1651                 };
1652                 const char *pre = make_log_name(o->iops_log_file, o->name);
1653                 const char *suf;
1654
1655                 if (fio_option_is_set(o, iops_avg_time))
1656                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1657                 else
1658                         o->iops_avg_time = p.avg_msec;
1659
1660                 p.hist_msec = o->log_hist_msec;
1661                 p.hist_coarseness = o->log_hist_coarseness;
1662
1663                 if (p.log_gz_store)
1664                         suf = "log.fz";
1665                 else
1666                         suf = "log";
1667
1668                 gen_log_name(logname, sizeof(logname), "iops", pre,
1669                                 td->thread_number, suf, o->per_job_logs);
1670                 setup_log(&td->iops_log, &p, logname);
1671         }
1672
1673         if (!o->name)
1674                 o->name = strdup(jobname);
1675
1676         if (output_format & FIO_OUTPUT_NORMAL) {
1677                 if (!job_add_num) {
1678                         if (is_backend && !recursed)
1679                                 fio_server_send_add_job(td);
1680
1681                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1682                                 char *c1, *c2, *c3, *c4;
1683                                 char *c5 = NULL, *c6 = NULL;
1684                                 int i2p = is_power_of_2(o->kb_base);
1685                                 struct buf_output out;
1686
1687                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1688                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1689                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1690                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1691
1692                                 if (!o->bs_is_seq_rand) {
1693                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1694                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1695                                 }
1696
1697                                 buf_output_init(&out);
1698                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1699                                                         td->groupid,
1700                                                         ddir_str(o->td_ddir));
1701
1702                                 if (o->bs_is_seq_rand)
1703                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1704                                                         c1, c2, c3, c4);
1705                                 else
1706                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1707                                                         c1, c2, c3, c4, c5, c6);
1708
1709                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1710                                                 td->io_ops->name, o->iodepth);
1711                                 log_info_buf(out.buf, out.buflen);
1712                                 buf_output_free(&out);
1713
1714                                 free(c1);
1715                                 free(c2);
1716                                 free(c3);
1717                                 free(c4);
1718                                 free(c5);
1719                                 free(c6);
1720                         }
1721                 } else if (job_add_num == 1)
1722                         log_info("...\n");
1723         }
1724
1725         if (td_steadystate_init(td))
1726                 goto err;
1727
1728         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1729                 goto err;
1730
1731         if (merge_blktrace_only) {
1732                 put_job(td);
1733                 return 0;
1734         }
1735
1736         /*
1737          * recurse add identical jobs, clear numjobs and stonewall options
1738          * as they don't apply to sub-jobs
1739          */
1740         numjobs = o->numjobs;
1741         while (--numjobs) {
1742                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1743
1744                 if (!td_new)
1745                         goto err;
1746
1747                 td_new->o.numjobs = 1;
1748                 td_new->o.stonewall = 0;
1749                 td_new->o.new_group = 0;
1750                 td_new->subjob_number = numjobs;
1751                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1752                 td_new->o.ss_limit = o->ss_limit;
1753
1754                 if (file_alloced) {
1755                         if (td_new->files) {
1756                                 struct fio_file *f;
1757                                 for_each_file(td_new, f, i)
1758                                         fio_file_free(f);
1759                                 free(td_new->files);
1760                                 td_new->files = NULL;
1761                         }
1762                         td_new->files_index = 0;
1763                         td_new->files_size = 0;
1764                         if (td_new->o.filename) {
1765                                 free(td_new->o.filename);
1766                                 td_new->o.filename = NULL;
1767                         }
1768                 }
1769
1770                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1771                         goto err;
1772         }
1773
1774         return 0;
1775 err:
1776         put_job(td);
1777         return -1;
1778 }
1779
1780 /*
1781  * Parse as if 'o' was a command line
1782  */
1783 void add_job_opts(const char **o, int client_type)
1784 {
1785         struct thread_data *td, *td_parent;
1786         int i, in_global = 1;
1787         char jobname[32];
1788
1789         i = 0;
1790         td_parent = td = NULL;
1791         while (o[i]) {
1792                 if (!strncmp(o[i], "name", 4)) {
1793                         in_global = 0;
1794                         if (td)
1795                                 add_job(td, jobname, 0, 0, client_type);
1796                         td = NULL;
1797                         sprintf(jobname, "%s", o[i] + 5);
1798                 }
1799                 if (in_global && !td_parent)
1800                         td_parent = get_new_job(true, &def_thread, false, jobname);
1801                 else if (!in_global && !td) {
1802                         if (!td_parent)
1803                                 td_parent = &def_thread;
1804                         td = get_new_job(false, td_parent, false, jobname);
1805                 }
1806                 if (in_global)
1807                         fio_options_parse(td_parent, (char **) &o[i], 1);
1808                 else
1809                         fio_options_parse(td, (char **) &o[i], 1);
1810                 i++;
1811         }
1812
1813         if (td)
1814                 add_job(td, jobname, 0, 0, client_type);
1815 }
1816
1817 static int skip_this_section(const char *name)
1818 {
1819         int i;
1820
1821         if (!nr_job_sections)
1822                 return 0;
1823         if (!strncmp(name, "global", 6))
1824                 return 0;
1825
1826         for (i = 0; i < nr_job_sections; i++)
1827                 if (!strcmp(job_sections[i], name))
1828                         return 0;
1829
1830         return 1;
1831 }
1832
1833 static int is_empty_or_comment(char *line)
1834 {
1835         unsigned int i;
1836
1837         for (i = 0; i < strlen(line); i++) {
1838                 if (line[i] == ';')
1839                         return 1;
1840                 if (line[i] == '#')
1841                         return 1;
1842                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1843                         return 0;
1844         }
1845
1846         return 1;
1847 }
1848
1849 /*
1850  * This is our [ini] type file parser.
1851  */
1852 static int __parse_jobs_ini(struct thread_data *td,
1853                 char *file, int is_buf, int stonewall_flag, int type,
1854                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1855 {
1856         bool global = false;
1857         bool stdin_occupied = false;
1858         char *string;
1859         FILE *f;
1860         char *p;
1861         int ret = 0, stonewall;
1862         int first_sect = 1;
1863         int skip_fgets = 0;
1864         int inside_skip = 0;
1865         char **opts;
1866         int i, alloc_opts, num_opts;
1867
1868         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1869         assert(td || !nested);
1870
1871         if (is_buf)
1872                 f = NULL;
1873         else {
1874                 if (!strcmp(file, "-")) {
1875                         f = stdin;
1876                         stdin_occupied = true;
1877                 } else
1878                         f = fopen(file, "r");
1879
1880                 if (!f) {
1881                         int __err = errno;
1882
1883                         log_err("fio: unable to open '%s' job file\n", file);
1884                         if (td)
1885                                 td_verror(td, __err, "job file open");
1886                         return 1;
1887                 }
1888         }
1889
1890         string = malloc(OPT_LEN_MAX);
1891
1892         /*
1893          * it's really 256 + small bit, 280 should suffice
1894          */
1895         if (!nested) {
1896                 name = malloc(280);
1897                 memset(name, 0, 280);
1898         }
1899
1900         opts = NULL;
1901         if (nested && popts) {
1902                 opts = *popts;
1903                 alloc_opts = *aopts;
1904                 num_opts = *nopts;
1905         }
1906
1907         if (!opts) {
1908                 alloc_opts = 8;
1909                 opts = malloc(sizeof(char *) * alloc_opts);
1910                 num_opts = 0;
1911         }
1912
1913         stonewall = stonewall_flag;
1914         do {
1915                 /*
1916                  * if skip_fgets is set, we already have loaded a line we
1917                  * haven't handled.
1918                  */
1919                 if (!skip_fgets) {
1920                         if (is_buf)
1921                                 p = strsep(&file, "\n");
1922                         else
1923                                 p = fgets(string, OPT_LEN_MAX, f);
1924                         if (!p)
1925                                 break;
1926                 }
1927
1928                 skip_fgets = 0;
1929                 strip_blank_front(&p);
1930                 strip_blank_end(p);
1931
1932                 dprint(FD_PARSE, "%s\n", p);
1933                 if (is_empty_or_comment(p))
1934                         continue;
1935
1936                 if (!nested) {
1937                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1938                                 if (inside_skip)
1939                                         continue;
1940
1941                                 log_err("fio: option <%s> outside of "
1942                                         "[] job section\n", p);
1943                                 ret = 1;
1944                                 break;
1945                         }
1946
1947                         name[strlen(name) - 1] = '\0';
1948
1949                         if (skip_this_section(name)) {
1950                                 inside_skip = 1;
1951                                 continue;
1952                         } else
1953                                 inside_skip = 0;
1954
1955                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1956
1957                         global = !strncmp(name, "global", 6);
1958
1959                         if (dump_cmdline) {
1960                                 if (first_sect)
1961                                         log_info("fio ");
1962                                 if (!global)
1963                                         log_info("--name=%s ", name);
1964                                 first_sect = 0;
1965                         }
1966
1967                         td = get_new_job(global, &def_thread, false, name);
1968                         if (!td) {
1969                                 ret = 1;
1970                                 break;
1971                         }
1972
1973                         /*
1974                          * Separate multiple job files by a stonewall
1975                          */
1976                         if (!global && stonewall) {
1977                                 td->o.stonewall = stonewall;
1978                                 stonewall = 0;
1979                         }
1980
1981                         num_opts = 0;
1982                         memset(opts, 0, alloc_opts * sizeof(char *));
1983                 }
1984                 else
1985                         skip_fgets = 1;
1986
1987                 while (1) {
1988                         if (!skip_fgets) {
1989                                 if (is_buf)
1990                                         p = strsep(&file, "\n");
1991                                 else
1992                                         p = fgets(string, OPT_LEN_MAX, f);
1993                                 if (!p)
1994                                         break;
1995                                 dprint(FD_PARSE, "%s", p);
1996                         }
1997                         else
1998                                 skip_fgets = 0;
1999
2000                         if (is_empty_or_comment(p))
2001                                 continue;
2002
2003                         strip_blank_front(&p);
2004
2005                         /*
2006                          * new section, break out and make sure we don't
2007                          * fgets() a new line at the top.
2008                          */
2009                         if (p[0] == '[') {
2010                                 if (nested) {
2011                                         log_err("No new sections in included files\n");
2012                                         ret = 1;
2013                                         goto out;
2014                                 }
2015
2016                                 skip_fgets = 1;
2017                                 break;
2018                         }
2019
2020                         strip_blank_end(p);
2021
2022                         if (!strncmp(p, "include", strlen("include"))) {
2023                                 char *filename = p + strlen("include") + 1,
2024                                         *ts, *full_fn = NULL;
2025
2026                                 /*
2027                                  * Allow for the include filename
2028                                  * specification to be relative.
2029                                  */
2030                                 if (access(filename, F_OK) &&
2031                                     (ts = strrchr(file, '/'))) {
2032                                         if (asprintf(&full_fn, "%.*s%s",
2033                                                  (int)(ts - file + 1), file,
2034                                                  filename) < 0) {
2035                                                 ret = ENOMEM;
2036                                                 break;
2037                                         }
2038                                         filename = full_fn;
2039                                 }
2040
2041                                 ret = __parse_jobs_ini(td, filename, is_buf,
2042                                                        stonewall_flag, type, 1,
2043                                                        name, &opts,
2044                                                        &alloc_opts, &num_opts);
2045
2046                                 if (ret) {
2047                                         log_err("Error %d while parsing "
2048                                                 "include file %s\n",
2049                                                 ret, filename);
2050                                 }
2051
2052                                 if (full_fn)
2053                                         free(full_fn);
2054
2055                                 if (ret)
2056                                         break;
2057
2058                                 continue;
2059                         }
2060
2061                         if (num_opts == alloc_opts) {
2062                                 alloc_opts <<= 1;
2063                                 opts = realloc(opts,
2064                                                 alloc_opts * sizeof(char *));
2065                         }
2066
2067                         opts[num_opts] = strdup(p);
2068                         num_opts++;
2069                 }
2070
2071                 if (nested) {
2072                         *popts = opts;
2073                         *aopts = alloc_opts;
2074                         *nopts = num_opts;
2075                         goto out;
2076                 }
2077
2078                 ret = fio_options_parse(td, opts, num_opts);
2079
2080                 if (!ret && td->o.read_iolog_file != NULL) {
2081                         char *fname = get_name_by_idx(td->o.read_iolog_file,
2082                                                       td->subjob_number);
2083                         if (!strcmp(fname, "-")) {
2084                                 if (stdin_occupied) {
2085                                         log_err("fio: only one user (read_iolog_file/job "
2086                                                 "file) of stdin is permitted at once but "
2087                                                 "more than one was found.\n");
2088                                         ret = 1;
2089                                 }
2090                                 stdin_occupied = true;
2091                         }
2092                 }
2093                 if (!ret) {
2094                         if (dump_cmdline)
2095                                 dump_opt_list(td);
2096
2097                         ret = add_job(td, name, 0, 0, type);
2098                 } else {
2099                         log_err("fio: job %s dropped\n", name);
2100                         put_job(td);
2101                 }
2102
2103                 for (i = 0; i < num_opts; i++)
2104                         free(opts[i]);
2105                 num_opts = 0;
2106         } while (!ret);
2107
2108         if (dump_cmdline)
2109                 log_info("\n");
2110
2111         i = 0;
2112         while (i < nr_job_sections) {
2113                 free(job_sections[i]);
2114                 i++;
2115         }
2116
2117         free(opts);
2118 out:
2119         free(string);
2120         if (!nested)
2121                 free(name);
2122         if (!is_buf && f != stdin)
2123                 fclose(f);
2124         return ret;
2125 }
2126
2127 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2128 {
2129         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2130                         0, NULL, NULL, NULL, NULL);
2131 }
2132
2133 static int fill_def_thread(void)
2134 {
2135         memset(&def_thread, 0, sizeof(def_thread));
2136         INIT_FLIST_HEAD(&def_thread.opt_list);
2137
2138         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2139         def_thread.o.error_dump = 1;
2140
2141         /*
2142          * fill default options
2143          */
2144         fio_fill_default_options(&def_thread);
2145         return 0;
2146 }
2147
2148 static void show_debug_categories(void)
2149 {
2150 #ifdef FIO_INC_DEBUG
2151         const struct debug_level *dl = &debug_levels[0];
2152         int curlen, first = 1;
2153
2154         curlen = 0;
2155         while (dl->name) {
2156                 int has_next = (dl + 1)->name != NULL;
2157
2158                 if (first || curlen + strlen(dl->name) >= 80) {
2159                         if (!first) {
2160                                 printf("\n");
2161                                 curlen = 0;
2162                         }
2163                         curlen += printf("\t\t\t%s", dl->name);
2164                         curlen += 3 * (8 - 1);
2165                         if (has_next)
2166                                 curlen += printf(",");
2167                 } else {
2168                         curlen += printf("%s", dl->name);
2169                         if (has_next)
2170                                 curlen += printf(",");
2171                 }
2172                 dl++;
2173                 first = 0;
2174         }
2175         printf("\n");
2176 #endif
2177 }
2178
2179 /*
2180  * Following options aren't printed by usage().
2181  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2182  * --latency-log - Deprecated option.
2183  */
2184 static void usage(const char *name)
2185 {
2186         printf("%s\n", fio_version_string);
2187         printf("%s [options] [job options] <job file(s)>\n", name);
2188         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2189         show_debug_categories();
2190         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2191         printf("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2192         printf("  --output\t\tWrite output to file\n");
2193         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2194         printf("  --minimal\t\tMinimal (terse) output\n");
2195         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2196         printf("  --terse-version=type\tSet terse version output format"
2197                 " (default 3, or 2 or 4)\n");
2198         printf("  --version\t\tPrint version info and exit\n");
2199         printf("  --help\t\tPrint this page\n");
2200         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2201         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2202         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2203                 " them\n");
2204         printf("  --enghelp=engine\tPrint ioengine help, or list"
2205                 " available ioengines\n");
2206         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2207                 " cmd\n");
2208         printf("  --showcmd\t\tTurn a job file into command line options\n");
2209         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2210         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2211         printf("  --eta-newline=t\tForce a new line for every 't'");
2212         printf(" period passed\n");
2213         printf("  --status-interval=t\tForce full status dump every");
2214         printf(" 't' period passed\n");
2215         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2216                 " writes\n");
2217         printf("  --section=name\tOnly run specified section in job file,"
2218                 " multiple sections can be specified\n");
2219         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2220                 " (def 16384)\n");
2221         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2222         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2223         printf("  --server=args\t\tStart a backend fio server\n");
2224         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2225         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2226         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2227         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2228                 "\t\t\t(option=system,percpu) or run unit work\n"
2229                 "\t\t\tcalibration only (option=calibrate)\n");
2230 #ifdef CONFIG_ZLIB
2231         printf("  --inflate-log=log\tInflate and output compressed log\n");
2232 #endif
2233         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2234         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2235         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2236         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2237         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2238         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2239 }
2240
2241 #ifdef FIO_INC_DEBUG
2242 const struct debug_level debug_levels[] = {
2243         { .name = "process",
2244           .help = "Process creation/exit logging",
2245           .shift = FD_PROCESS,
2246         },
2247         { .name = "file",
2248           .help = "File related action logging",
2249           .shift = FD_FILE,
2250         },
2251         { .name = "io",
2252           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2253           .shift = FD_IO,
2254         },
2255         { .name = "mem",
2256           .help = "Memory allocation/freeing logging",
2257           .shift = FD_MEM,
2258         },
2259         { .name = "blktrace",
2260           .help = "blktrace action logging",
2261           .shift = FD_BLKTRACE,
2262         },
2263         { .name = "verify",
2264           .help = "IO verification action logging",
2265           .shift = FD_VERIFY,
2266         },
2267         { .name = "random",
2268           .help = "Random generation logging",
2269           .shift = FD_RANDOM,
2270         },
2271         { .name = "parse",
2272           .help = "Parser logging",
2273           .shift = FD_PARSE,
2274         },
2275         { .name = "diskutil",
2276           .help = "Disk utility logging actions",
2277           .shift = FD_DISKUTIL,
2278         },
2279         { .name = "job",
2280           .help = "Logging related to creating/destroying jobs",
2281           .shift = FD_JOB,
2282         },
2283         { .name = "mutex",
2284           .help = "Mutex logging",
2285           .shift = FD_MUTEX
2286         },
2287         { .name = "profile",
2288           .help = "Logging related to profiles",
2289           .shift = FD_PROFILE,
2290         },
2291         { .name = "time",
2292           .help = "Logging related to time keeping functions",
2293           .shift = FD_TIME,
2294         },
2295         { .name = "net",
2296           .help = "Network logging",
2297           .shift = FD_NET,
2298         },
2299         { .name = "rate",
2300           .help = "Rate logging",
2301           .shift = FD_RATE,
2302         },
2303         { .name = "compress",
2304           .help = "Log compression logging",
2305           .shift = FD_COMPRESS,
2306         },
2307         { .name = "steadystate",
2308           .help = "Steady state detection logging",
2309           .shift = FD_STEADYSTATE,
2310         },
2311         { .name = "helperthread",
2312           .help = "Helper thread logging",
2313           .shift = FD_HELPERTHREAD,
2314         },
2315         { .name = "zbd",
2316           .help = "Zoned Block Device logging",
2317           .shift = FD_ZBD,
2318         },
2319         { .name = NULL, },
2320 };
2321
2322 static int set_debug(const char *string)
2323 {
2324         const struct debug_level *dl;
2325         char *p = (char *) string;
2326         char *opt;
2327         int i;
2328
2329         if (!string)
2330                 return 0;
2331
2332         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2333                 log_info("fio: dumping debug options:");
2334                 for (i = 0; debug_levels[i].name; i++) {
2335                         dl = &debug_levels[i];
2336                         log_info("%s,", dl->name);
2337                 }
2338                 log_info("all\n");
2339                 return 1;
2340         }
2341
2342         while ((opt = strsep(&p, ",")) != NULL) {
2343                 int found = 0;
2344
2345                 if (!strncmp(opt, "all", 3)) {
2346                         log_info("fio: set all debug options\n");
2347                         fio_debug = ~0UL;
2348                         continue;
2349                 }
2350
2351                 for (i = 0; debug_levels[i].name; i++) {
2352                         dl = &debug_levels[i];
2353                         found = !strncmp(opt, dl->name, strlen(dl->name));
2354                         if (!found)
2355                                 continue;
2356
2357                         if (dl->shift == FD_JOB) {
2358                                 opt = strchr(opt, ':');
2359                                 if (!opt) {
2360                                         log_err("fio: missing job number\n");
2361                                         break;
2362                                 }
2363                                 opt++;
2364                                 fio_debug_jobno = atoi(opt);
2365                                 log_info("fio: set debug jobno %d\n",
2366                                                         fio_debug_jobno);
2367                         } else {
2368                                 log_info("fio: set debug option %s\n", opt);
2369                                 fio_debug |= (1UL << dl->shift);
2370                         }
2371                         break;
2372                 }
2373
2374                 if (!found)
2375                         log_err("fio: debug mask %s not found\n", opt);
2376         }
2377         return 0;
2378 }
2379 #else
2380 static int set_debug(const char *string)
2381 {
2382         log_err("fio: debug tracing not included in build\n");
2383         return 1;
2384 }
2385 #endif
2386
2387 static void fio_options_fill_optstring(void)
2388 {
2389         char *ostr = cmd_optstr;
2390         int i, c;
2391
2392         c = i = 0;
2393         while (l_opts[i].name) {
2394                 ostr[c++] = l_opts[i].val;
2395                 if (l_opts[i].has_arg == required_argument)
2396                         ostr[c++] = ':';
2397                 else if (l_opts[i].has_arg == optional_argument) {
2398                         ostr[c++] = ':';
2399                         ostr[c++] = ':';
2400                 }
2401                 i++;
2402         }
2403         ostr[c] = '\0';
2404 }
2405
2406 static int client_flag_set(char c)
2407 {
2408         int i;
2409
2410         i = 0;
2411         while (l_opts[i].name) {
2412                 int val = l_opts[i].val;
2413
2414                 if (c == (val & 0xff))
2415                         return (val & FIO_CLIENT_FLAG);
2416
2417                 i++;
2418         }
2419
2420         return 0;
2421 }
2422
2423 static void parse_cmd_client(void *client, char *opt)
2424 {
2425         fio_client_add_cmd_option(client, opt);
2426 }
2427
2428 static void show_closest_option(const char *name)
2429 {
2430         int best_option, best_distance;
2431         int i, distance;
2432
2433         while (*name == '-')
2434                 name++;
2435
2436         best_option = -1;
2437         best_distance = INT_MAX;
2438         i = 0;
2439         while (l_opts[i].name) {
2440                 distance = string_distance(name, l_opts[i].name);
2441                 if (distance < best_distance) {
2442                         best_distance = distance;
2443                         best_option = i;
2444                 }
2445                 i++;
2446         }
2447
2448         if (best_option != -1 && string_distance_ok(name, best_distance))
2449                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2450 }
2451
2452 static int parse_output_format(const char *optarg)
2453 {
2454         char *p, *orig, *opt;
2455         int ret = 0;
2456
2457         p = orig = strdup(optarg);
2458
2459         output_format = 0;
2460
2461         while ((opt = strsep(&p, ",")) != NULL) {
2462                 if (!strcmp(opt, "minimal") ||
2463                     !strcmp(opt, "terse") ||
2464                     !strcmp(opt, "csv"))
2465                         output_format |= FIO_OUTPUT_TERSE;
2466                 else if (!strcmp(opt, "json"))
2467                         output_format |= FIO_OUTPUT_JSON;
2468                 else if (!strcmp(opt, "json+"))
2469                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2470                 else if (!strcmp(opt, "normal"))
2471                         output_format |= FIO_OUTPUT_NORMAL;
2472                 else {
2473                         log_err("fio: invalid output format %s\n", opt);
2474                         ret = 1;
2475                         break;
2476                 }
2477         }
2478
2479         free(orig);
2480         return ret;
2481 }
2482
2483 int parse_cmd_line(int argc, char *argv[], int client_type)
2484 {
2485         struct thread_data *td = NULL;
2486         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2487         char *ostr = cmd_optstr;
2488         char *pid_file = NULL;
2489         void *cur_client = NULL;
2490         bool backend = false;
2491
2492         /*
2493          * Reset optind handling, since we may call this multiple times
2494          * for the backend.
2495          */
2496         optind = 1;
2497
2498         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2499                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2500                         parse_cmd_client(cur_client, argv[optind - 1]);
2501                         c &= ~FIO_CLIENT_FLAG;
2502                 }
2503
2504                 switch (c) {
2505                 case 'a':
2506                         smalloc_pool_size = atoi(optarg);
2507                         smalloc_pool_size <<= 10;
2508                         sinit();
2509                         break;
2510                 case 'l':
2511                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2512                         do_exit++;
2513                         exit_val = 1;
2514                         break;
2515                 case 'b':
2516                         write_bw_log = true;
2517                         break;
2518                 case 'o': {
2519                         FILE *tmp;
2520
2521                         if (f_out && f_out != stdout)
2522                                 fclose(f_out);
2523
2524                         tmp = fopen(optarg, "w+");
2525                         if (!tmp) {
2526                                 log_err("fio: output file open error: %s\n", strerror(errno));
2527                                 exit_val = 1;
2528                                 do_exit++;
2529                                 break;
2530                         }
2531                         f_err = f_out = tmp;
2532                         break;
2533                         }
2534                 case 'm':
2535                         output_format = FIO_OUTPUT_TERSE;
2536                         break;
2537                 case 'F':
2538                         if (parse_output_format(optarg)) {
2539                                 log_err("fio: failed parsing output-format\n");
2540                                 exit_val = 1;
2541                                 do_exit++;
2542                                 break;
2543                         }
2544                         break;
2545                 case 'f':
2546                         output_format |= FIO_OUTPUT_TERSE;
2547                         break;
2548                 case 'h':
2549                         did_arg = true;
2550                         if (!cur_client) {
2551                                 usage(argv[0]);
2552                                 do_exit++;
2553                         }
2554                         break;
2555                 case 'c':
2556                         did_arg = true;
2557                         if (!cur_client) {
2558                                 fio_show_option_help(optarg);
2559                                 do_exit++;
2560                         }
2561                         break;
2562                 case 'i':
2563                         did_arg = true;
2564                         if (!cur_client) {
2565                                 exit_val = fio_show_ioengine_help(optarg);
2566                                 do_exit++;
2567                         }
2568                         break;
2569                 case 's':
2570                         did_arg = true;
2571                         dump_cmdline = true;
2572                         break;
2573                 case 'r':
2574                         read_only = 1;
2575                         break;
2576                 case 'v':
2577                         did_arg = true;
2578                         if (!cur_client) {
2579                                 log_info("%s\n", fio_version_string);
2580                                 do_exit++;
2581                         }
2582                         break;
2583                 case 'V':
2584                         terse_version = atoi(optarg);
2585                         if (!(terse_version >= 2 && terse_version <= 5)) {
2586                                 log_err("fio: bad terse version format\n");
2587                                 exit_val = 1;
2588                                 do_exit++;
2589                         }
2590                         break;
2591                 case 'e':
2592                         if (!strcmp("always", optarg))
2593                                 eta_print = FIO_ETA_ALWAYS;
2594                         else if (!strcmp("never", optarg))
2595                                 eta_print = FIO_ETA_NEVER;
2596                         break;
2597                 case 'E': {
2598                         long long t = 0;
2599
2600                         if (check_str_time(optarg, &t, 1)) {
2601                                 log_err("fio: failed parsing eta time %s\n", optarg);
2602                                 exit_val = 1;
2603                                 do_exit++;
2604                                 break;
2605                         }
2606                         eta_new_line = t / 1000;
2607                         if (!eta_new_line) {
2608                                 log_err("fio: eta new line time too short\n");
2609                                 exit_val = 1;
2610                                 do_exit++;
2611                         }
2612                         break;
2613                         }
2614                 case 'O': {
2615                         long long t = 0;
2616
2617                         if (check_str_time(optarg, &t, 1)) {
2618                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2619                                 exit_val = 1;
2620                                 do_exit++;
2621                                 break;
2622                         }
2623                         eta_interval_msec = t / 1000;
2624                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2625                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2626                                 exit_val = 1;
2627                                 do_exit++;
2628                         }
2629                         break;
2630                         }
2631                 case 'd':
2632                         if (set_debug(optarg))
2633                                 do_exit++;
2634                         break;
2635                 case 'P':
2636                         did_arg = true;
2637                         parse_only = true;
2638                         break;
2639                 case 'x': {
2640                         size_t new_size;
2641
2642                         if (!strcmp(optarg, "global")) {
2643                                 log_err("fio: can't use global as only "
2644                                         "section\n");
2645                                 do_exit++;
2646                                 exit_val = 1;
2647                                 break;
2648                         }
2649                         new_size = (nr_job_sections + 1) * sizeof(char *);
2650                         job_sections = realloc(job_sections, new_size);
2651                         job_sections[nr_job_sections] = strdup(optarg);
2652                         nr_job_sections++;
2653                         break;
2654                         }
2655 #ifdef CONFIG_ZLIB
2656                 case 'X':
2657                         exit_val = iolog_file_inflate(optarg);
2658                         did_arg = true;
2659                         do_exit++;
2660                         break;
2661 #endif
2662                 case 'p':
2663                         did_arg = true;
2664                         if (exec_profile)
2665                                 free(exec_profile);
2666                         exec_profile = strdup(optarg);
2667                         break;
2668                 case FIO_GETOPT_JOB: {
2669                         const char *opt = l_opts[lidx].name;
2670                         char *val = optarg;
2671
2672                         if (!strncmp(opt, "name", 4) && td) {
2673                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2674                                 if (ret)
2675                                         goto out_free;
2676                                 td = NULL;
2677                                 did_arg = true;
2678                         }
2679                         if (!td) {
2680                                 int is_section = !strncmp(opt, "name", 4);
2681                                 int global = 0;
2682
2683                                 if (!is_section || !strncmp(val, "global", 6))
2684                                         global = 1;
2685
2686                                 if (is_section && skip_this_section(val))
2687                                         continue;
2688
2689                                 td = get_new_job(global, &def_thread, true, NULL);
2690                                 if (!td || ioengine_load(td)) {
2691                                         if (td) {
2692                                                 put_job(td);
2693                                                 td = NULL;
2694                                         }
2695                                         do_exit++;
2696                                         exit_val = 1;
2697                                         break;
2698                                 }
2699                                 fio_options_set_ioengine_opts(l_opts, td);
2700                         }
2701
2702                         if ((!val || !strlen(val)) &&
2703                             l_opts[lidx].has_arg == required_argument) {
2704                                 log_err("fio: option %s requires an argument\n", opt);
2705                                 ret = 1;
2706                         } else
2707                                 ret = fio_cmd_option_parse(td, opt, val);
2708
2709                         if (ret) {
2710                                 if (td) {
2711                                         put_job(td);
2712                                         td = NULL;
2713                                 }
2714                                 do_exit++;
2715                                 exit_val = 1;
2716                         }
2717
2718                         if (!ret && !strcmp(opt, "ioengine")) {
2719                                 if (ioengine_load(td)) {
2720                                         put_job(td);
2721                                         td = NULL;
2722                                         do_exit++;
2723                                         exit_val = 1;
2724                                         break;
2725                                 }
2726                                 fio_options_set_ioengine_opts(l_opts, td);
2727                         }
2728                         break;
2729                 }
2730                 case FIO_GETOPT_IOENGINE: {
2731                         const char *opt = l_opts[lidx].name;
2732                         char *val = optarg;
2733
2734                         if (!td)
2735                                 break;
2736
2737                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2738                         break;
2739                 }
2740                 case 'w':
2741                         warnings_fatal = 1;
2742                         break;
2743                 case 'j':
2744                         max_jobs = atoi(optarg);
2745                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2746                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2747                                 do_exit++;
2748                                 exit_val = 1;
2749                         }
2750                         break;
2751                 case 'S':
2752                         did_arg = true;
2753 #ifndef CONFIG_NO_SHM
2754                         if (nr_clients) {
2755                                 log_err("fio: can't be both client and server\n");
2756                                 do_exit++;
2757                                 exit_val = 1;
2758                                 break;
2759                         }
2760                         if (optarg)
2761                                 fio_server_set_arg(optarg);
2762                         is_backend = true;
2763                         backend = true;
2764 #else
2765                         log_err("fio: client/server requires SHM support\n");
2766                         do_exit++;
2767                         exit_val = 1;
2768 #endif
2769                         break;
2770                 case 'D':
2771                         if (pid_file)
2772                                 free(pid_file);
2773                         pid_file = strdup(optarg);
2774                         break;
2775                 case 'I':
2776                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2777                                 /* exit on error and calibration only */
2778                                 did_arg = true;
2779                                 do_exit++;
2780                                 if (ret == -1)
2781                                         exit_val = 1;
2782                         }
2783                         break;
2784                 case 'C':
2785                         did_arg = true;
2786                         if (is_backend) {
2787                                 log_err("fio: can't be both client and server\n");
2788                                 do_exit++;
2789                                 exit_val = 1;
2790                                 break;
2791                         }
2792                         /* if --client parameter contains a pathname */
2793                         if (0 == access(optarg, R_OK)) {
2794                                 /* file contains a list of host addrs or names */
2795                                 char hostaddr[PATH_MAX] = {0};
2796                                 char formatstr[8];
2797                                 FILE * hostf = fopen(optarg, "r");
2798                                 if (!hostf) {
2799                                         log_err("fio: could not open client list file %s for read\n", optarg);
2800                                         do_exit++;
2801                                         exit_val = 1;
2802                                         break;
2803                                 }
2804                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2805                                 /*
2806                                  * read at most PATH_MAX-1 chars from each
2807                                  * record in this file
2808                                  */
2809                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2810                                         /* expect EVERY host in file to be valid */
2811                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2812                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2813                                                 do_exit++;
2814                                                 exit_val = 1;
2815                                                 break;
2816                                         }
2817                                 }
2818                                 fclose(hostf);
2819                                 break; /* no possibility of job file for "this client only" */
2820                         }
2821                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2822                                 log_err("fio: failed adding client %s\n", optarg);
2823                                 do_exit++;
2824                                 exit_val = 1;
2825                                 break;
2826                         }
2827                         /*
2828                          * If the next argument exists and isn't an option,
2829                          * assume it's a job file for this client only.
2830                          */
2831                         while (optind < argc) {
2832                                 if (!strncmp(argv[optind], "--", 2) ||
2833                                     !strncmp(argv[optind], "-", 1))
2834                                         break;
2835
2836                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2837                                         break;
2838                                 optind++;
2839                         }
2840                         break;
2841                 case 'R':
2842                         did_arg = true;
2843                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2844                                 do_exit++;
2845                                 exit_val = 1;
2846                         }
2847                         break;
2848                 case 'T':
2849                         did_arg = true;
2850                         do_exit++;
2851                         exit_val = fio_monotonic_clocktest(1);
2852                         break;
2853                 case 'G':
2854                         did_arg = true;
2855                         do_exit++;
2856                         exit_val = fio_crctest(optarg);
2857                         break;
2858                 case 'M':
2859                         did_arg = true;
2860                         do_exit++;
2861                         exit_val = fio_memcpy_test(optarg);
2862                         break;
2863                 case 'L': {
2864                         long long val;
2865
2866                         if (check_str_time(optarg, &val, 1)) {
2867                                 log_err("fio: failed parsing time %s\n", optarg);
2868                                 do_exit++;
2869                                 exit_val = 1;
2870                                 break;
2871                         }
2872                         if (val < 1000) {
2873                                 log_err("fio: status interval too small\n");
2874                                 do_exit++;
2875                                 exit_val = 1;
2876                         }
2877                         status_interval = val / 1000;
2878                         break;
2879                         }
2880                 case 'W':
2881                         if (trigger_file)
2882                                 free(trigger_file);
2883                         trigger_file = strdup(optarg);
2884                         break;
2885                 case 'H':
2886                         if (trigger_cmd)
2887                                 free(trigger_cmd);
2888                         trigger_cmd = strdup(optarg);
2889                         break;
2890                 case 'J':
2891                         if (trigger_remote_cmd)
2892                                 free(trigger_remote_cmd);
2893                         trigger_remote_cmd = strdup(optarg);
2894                         break;
2895                 case 'K':
2896                         if (aux_path)
2897                                 free(aux_path);
2898                         aux_path = strdup(optarg);
2899                         break;
2900                 case 'B':
2901                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2902                                 log_err("fio: failed parsing time %s\n", optarg);
2903                                 do_exit++;
2904                                 exit_val = 1;
2905                         }
2906                         trigger_timeout /= 1000000;
2907                         break;
2908
2909                 case 'A':
2910                         did_arg = true;
2911                         merge_blktrace_only = true;
2912                         break;
2913                 case '?':
2914                         log_err("%s: unrecognized option '%s'\n", argv[0],
2915                                                         argv[optind - 1]);
2916                         show_closest_option(argv[optind - 1]);
2917                         fallthrough;
2918                 default:
2919                         do_exit++;
2920                         exit_val = 1;
2921                         break;
2922                 }
2923                 if (do_exit)
2924                         break;
2925         }
2926
2927         if (do_exit && !(is_backend || nr_clients))
2928                 exit(exit_val);
2929
2930         if (nr_clients && fio_clients_connect())
2931                 exit(1);
2932
2933         if (is_backend && backend)
2934                 return fio_start_server(pid_file);
2935         else if (pid_file)
2936                 free(pid_file);
2937
2938         if (td) {
2939                 if (!ret) {
2940                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2941                         if (ret)
2942                                 exit(1);
2943                 }
2944         }
2945
2946         while (!ret && optind < argc) {
2947                 ini_idx++;
2948                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2949                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2950                 optind++;
2951         }
2952
2953 out_free:
2954         return ini_idx;
2955 }
2956
2957 int fio_init_options(void)
2958 {
2959         f_out = stdout;
2960         f_err = stderr;
2961
2962         fio_options_fill_optstring();
2963         fio_options_dup_and_init(l_opts);
2964
2965         atexit(free_shm);
2966
2967         if (fill_def_thread())
2968                 return 1;
2969
2970         return 0;
2971 }
2972
2973 extern int fio_check_options(struct thread_options *);
2974
2975 int parse_options(int argc, char *argv[])
2976 {
2977         const int type = FIO_CLIENT_TYPE_CLI;
2978         int job_files, i;
2979
2980         if (fio_init_options())
2981                 return 1;
2982         if (fio_test_cconv(&def_thread.o))
2983                 log_err("fio: failed internal cconv test\n");
2984
2985         job_files = parse_cmd_line(argc, argv, type);
2986
2987         if (job_files > 0) {
2988                 for (i = 0; i < job_files; i++) {
2989                         if (i && fill_def_thread())
2990                                 return 1;
2991                         if (nr_clients) {
2992                                 if (fio_clients_send_ini(ini_file[i]))
2993                                         return 1;
2994                                 free(ini_file[i]);
2995                         } else if (!is_backend) {
2996                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2997                                         return 1;
2998                                 free(ini_file[i]);
2999                         }
3000                 }
3001         } else if (nr_clients) {
3002                 if (fill_def_thread())
3003                         return 1;
3004                 if (fio_clients_send_ini(NULL))
3005                         return 1;
3006         }
3007
3008         free(ini_file);
3009         fio_options_free(&def_thread);
3010         filesetup_mem_free();
3011
3012         if (!thread_number) {
3013                 if (parse_dryrun())
3014                         return 0;
3015                 if (exec_profile)
3016                         return 0;
3017                 if (is_backend || nr_clients)
3018                         return 0;
3019                 if (did_arg)
3020                         return 0;
3021
3022                 log_err("No job(s) defined\n\n");
3023                 usage(argv[0]);
3024                 return 1;
3025         }
3026
3027         if (output_format & FIO_OUTPUT_NORMAL)
3028                 log_info("%s\n", fio_version_string);
3029
3030         return 0;
3031 }
3032
3033 void options_default_fill(struct thread_options *o)
3034 {
3035         memcpy(o, &def_thread.o, sizeof(*o));
3036 }
3037
3038 struct thread_data *get_global_options(void)
3039 {
3040         return &def_thread;
3041 }