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 bool dump_cmdline;
  49 static bool parse_only;
  50 static bool merge_blktrace_only;
  51
  52 static struct thread_data def_thread;
  53 struct thread_segment segments[REAL_MAX_SEG];
  54 static char **job_sections;
  55 static int nr_job_sections;
  56
  57 bool exitall_on_terminate = false;
  58 int output_format = FIO_OUTPUT_NORMAL;
  59 int eta_print = FIO_ETA_AUTO;
  60 unsigned int eta_interval_msec = 1000;
  61 int eta_new_line = 0;
  62 FILE *f_out = NULL;
  63 FILE *f_err = NULL;
  64 char *exec_profile = NULL;
  65 int warnings_fatal = 0;
  66 int terse_version = 3;
  67 bool is_backend = false;
  68 bool is_local_backend = false;
  69 int nr_clients = 0;
  70 bool log_syslog = false;
  71
  72 bool write_bw_log = false;
  73 bool read_only = false;
  74 int status_interval = 0;
  75
  76 char *trigger_file = NULL;
  77 long long trigger_timeout = 0;
  78 char *trigger_cmd = NULL;
  79 char *trigger_remote_cmd = NULL;
  80
  81 char *aux_path = NULL;
  82
  83 static int prev_group_jobs;
  84
  85 unsigned long fio_debug = 0;
  86 unsigned int fio_debug_jobno = -1;
  87 unsigned int *fio_debug_jobp = NULL;
  88 unsigned int *fio_warned = NULL;
  89
  90 static char cmd_optstr[256];
  91 static bool did_arg;
  92
  93 #define FIO_CLIENT_FLAG         (1 << 16)
  94
  95 /*
  96  * Command line options. These will contain the above, plus a few
  97  * extra that only pertain to fio itself and not jobs.
  98  */
  99 static struct option l_opts[FIO_NR_OPTIONS] = {
 100         {
 101                 .name           = (char *) "output",
 102                 .has_arg        = required_argument,
 103                 .val            = 'o' | FIO_CLIENT_FLAG,
 104         },
 105         {
 106                 .name           = (char *) "latency-log",
 107                 .has_arg        = required_argument,
 108                 .val            = 'l' | FIO_CLIENT_FLAG,
 109         },
 110         {
 111                 .name           = (char *) "bandwidth-log",
 112                 .has_arg        = no_argument,
 113                 .val            = 'b' | FIO_CLIENT_FLAG,
 114         },
 115         {
 116                 .name           = (char *) "minimal",
 117                 .has_arg        = no_argument,
 118                 .val            = 'm' | FIO_CLIENT_FLAG,
 119         },
 120         {
 121                 .name           = (char *) "output-format",
 122                 .has_arg        = required_argument,
 123                 .val            = 'F' | FIO_CLIENT_FLAG,
 124         },
 125         {
 126                 .name           = (char *) "append-terse",
 127                 .has_arg        = optional_argument,
 128                 .val            = 'f',
 129         },
 130         {
 131                 .name           = (char *) "version",
 132                 .has_arg        = no_argument,
 133                 .val            = 'v' | FIO_CLIENT_FLAG,
 134         },
 135         {
 136                 .name           = (char *) "help",
 137                 .has_arg        = no_argument,
 138                 .val            = 'h' | FIO_CLIENT_FLAG,
 139         },
 140         {
 141                 .name           = (char *) "cmdhelp",
 142                 .has_arg        = optional_argument,
 143                 .val            = 'c' | FIO_CLIENT_FLAG,
 144         },
 145         {
 146                 .name           = (char *) "enghelp",
 147                 .has_arg        = optional_argument,
 148                 .val            = 'i' | FIO_CLIENT_FLAG,
 149         },
 150         {
 151                 .name           = (char *) "showcmd",
 152                 .has_arg        = no_argument,
 153                 .val            = 's' | FIO_CLIENT_FLAG,
 154         },
 155         {
 156                 .name           = (char *) "readonly",
 157                 .has_arg        = no_argument,
 158                 .val            = 'r' | FIO_CLIENT_FLAG,
 159         },
 160         {
 161                 .name           = (char *) "eta",
 162                 .has_arg        = required_argument,
 163                 .val            = 'e' | FIO_CLIENT_FLAG,
 164         },
 165         {
 166                 .name           = (char *) "eta-interval",
 167                 .has_arg        = required_argument,
 168                 .val            = 'O' | FIO_CLIENT_FLAG,
 169         },
 170         {
 171                 .name           = (char *) "eta-newline",
 172                 .has_arg        = required_argument,
 173                 .val            = 'E' | FIO_CLIENT_FLAG,
 174         },
 175         {
 176                 .name           = (char *) "debug",
 177                 .has_arg        = required_argument,
 178                 .val            = 'd' | FIO_CLIENT_FLAG,
 179         },
 180         {
 181                 .name           = (char *) "parse-only",
 182                 .has_arg        = no_argument,
 183                 .val            = 'P' | FIO_CLIENT_FLAG,
 184         },
 185         {
 186                 .name           = (char *) "section",
 187                 .has_arg        = required_argument,
 188                 .val            = 'x' | FIO_CLIENT_FLAG,
 189         },
 190 #ifdef CONFIG_ZLIB
 191         {
 192                 .name           = (char *) "inflate-log",
 193                 .has_arg        = required_argument,
 194                 .val            = 'X' | FIO_CLIENT_FLAG,
 195         },
 196 #endif
 197         {
 198                 .name           = (char *) "alloc-size",
 199                 .has_arg        = required_argument,
 200                 .val            = 'a' | FIO_CLIENT_FLAG,
 201         },
 202         {
 203                 .name           = (char *) "profile",
 204                 .has_arg        = required_argument,
 205                 .val            = 'p' | FIO_CLIENT_FLAG,
 206         },
 207         {
 208                 .name           = (char *) "warnings-fatal",
 209                 .has_arg        = no_argument,
 210                 .val            = 'w' | FIO_CLIENT_FLAG,
 211         },
 212         {
 213                 .name           = (char *) "max-jobs",
 214                 .has_arg        = required_argument,
 215                 .val            = 'j' | FIO_CLIENT_FLAG,
 216         },
 217         {
 218                 .name           = (char *) "terse-version",
 219                 .has_arg        = required_argument,
 220                 .val            = 'V' | FIO_CLIENT_FLAG,
 221         },
 222         {
 223                 .name           = (char *) "server",
 224                 .has_arg        = optional_argument,
 225                 .val            = 'S',
 226         },
 227         {       .name           = (char *) "daemonize",
 228                 .has_arg        = required_argument,
 229                 .val            = 'D',
 230         },
 231         {
 232                 .name           = (char *) "client",
 233                 .has_arg        = required_argument,
 234                 .val            = 'C',
 235         },
 236         {
 237                 .name           = (char *) "remote-config",
 238                 .has_arg        = required_argument,
 239                 .val            = 'R',
 240         },
 241         {
 242                 .name           = (char *) "cpuclock-test",
 243                 .has_arg        = no_argument,
 244                 .val            = 'T',
 245         },
 246         {
 247                 .name           = (char *) "crctest",
 248                 .has_arg        = optional_argument,
 249                 .val            = 'G',
 250         },
 251         {
 252                 .name           = (char *) "memcpytest",
 253                 .has_arg        = optional_argument,
 254                 .val            = 'M',
 255         },
 256         {
 257                 .name           = (char *) "idle-prof",
 258                 .has_arg        = required_argument,
 259                 .val            = 'I',
 260         },
 261         {
 262                 .name           = (char *) "status-interval",
 263                 .has_arg        = required_argument,
 264                 .val            = 'L' | FIO_CLIENT_FLAG,
 265         },
 266         {
 267                 .name           = (char *) "trigger-file",
 268                 .has_arg        = required_argument,
 269                 .val            = 'W',
 270         },
 271         {
 272                 .name           = (char *) "trigger-timeout",
 273                 .has_arg        = required_argument,
 274                 .val            = 'B',
 275         },
 276         {
 277                 .name           = (char *) "trigger",
 278                 .has_arg        = required_argument,
 279                 .val            = 'H',
 280         },
 281         {
 282                 .name           = (char *) "trigger-remote",
 283                 .has_arg        = required_argument,
 284                 .val            = 'J',
 285         },
 286         {
 287                 .name           = (char *) "aux-path",
 288                 .has_arg        = required_argument,
 289                 .val            = 'K',
 290         },
 291         {
 292                 .name           = (char *) "merge-blktrace-only",
 293                 .has_arg        = no_argument,
 294                 .val            = 'A' | FIO_CLIENT_FLAG,
 295         },
 296         {
 297                 .name           = NULL,
 298         },
 299 };
 300
 301 void free_threads_shm(void)
 302 {
 303         int i;
 304
 305         for (i = 0; i < nr_segments; i++) {
 306                 struct thread_segment *seg = &segments[i];
 307
 308                 if (seg->threads) {
 309                         void *tp = seg->threads;
 310 #ifndef CONFIG_NO_SHM
 311                         struct shmid_ds sbuf;
 312
 313                         seg->threads = NULL;
 314                         shmdt(tp);
 315                         shmctl(seg->shm_id, IPC_RMID, &sbuf);
 316                         seg->shm_id = -1;
 317 #else
 318                         seg->threads = NULL;
 319                         free(tp);
 320 #endif
 321                 }
 322         }
 323
 324         nr_segments = 0;
 325         cur_segment = 0;
 326 }
 327
 328 static void free_shm(void)
 329 {
 330 #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
 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 #endif
 348 }
 349
 350 static int add_thread_segment(void)
 351 {
 352         struct thread_segment *seg = &segments[nr_segments];
 353         size_t size = JOBS_PER_SEG * sizeof(struct thread_data);
 354         int i;
 355
 356         if (nr_segments + 1 >= REAL_MAX_SEG) {
 357                 log_err("error: maximum number of jobs reached.\n");
 358                 return -1;
 359         }
 360
 361         size += 2 * sizeof(unsigned int);
 362
 363 #ifndef CONFIG_NO_SHM
 364         seg->shm_id = shmget(0, size, IPC_CREAT | 0600);
 365         if (seg->shm_id == -1) {
 366                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC)
 367                         perror("shmget");
 368                 return -1;
 369         }
 370 #else
 371         seg->threads = malloc(size);
 372         if (!seg->threads)
 373                 return -1;
 374 #endif
 375
 376 #ifndef CONFIG_NO_SHM
 377         seg->threads = shmat(seg->shm_id, NULL, 0);
 378         if (seg->threads == (void *) -1) {
 379                 perror("shmat");
 380                 return 1;
 381         }
 382         if (shm_attach_to_open_removed())
 383                 shmctl(seg->shm_id, IPC_RMID, NULL);
 384 #endif
 385
 386         nr_segments++;
 387
 388         memset(seg->threads, 0, JOBS_PER_SEG * sizeof(struct thread_data));
 389         for (i = 0; i < JOBS_PER_SEG; i++)
 390                 DRD_IGNORE_VAR(seg->threads[i]);
 391         seg->nr_threads = 0;
 392
 393         /* Not first segment, we're done */
 394         if (nr_segments != 1) {
 395                 cur_segment++;
 396                 return 0;
 397         }
 398
 399         fio_debug_jobp = (unsigned int *)(seg->threads + JOBS_PER_SEG);
 400         *fio_debug_jobp = -1;
 401         fio_warned = fio_debug_jobp + 1;
 402         *fio_warned = 0;
 403
 404         flow_init();
 405         return 0;
 406 }
 407
 408 /*
 409  * The thread areas are shared between the main process and the job
 410  * threads/processes, and is split into chunks of JOBS_PER_SEG. If the current
 411  * segment has no more room, add a new chunk.
 412  */
 413 static int expand_thread_area(void)
 414 {
 415         struct thread_segment *seg = &segments[cur_segment];
 416
 417         if (nr_segments && seg->nr_threads < JOBS_PER_SEG)
 418                 return 0;
 419
 420         return add_thread_segment();
 421 }
 422
 423 static void dump_print_option(struct print_option *p)
 424 {
 425         const char *delim;
 426
 427         if (!strcmp("description", p->name))
 428                 delim = "\"";
 429         else
 430                 delim = "";
 431
 432         log_info("--%s%s", p->name, p->value ? "" : " ");
 433         if (p->value)
 434                 log_info("=%s%s%s ", delim, p->value, delim);
 435 }
 436
 437 static void dump_opt_list(struct thread_data *td)
 438 {
 439         struct flist_head *entry;
 440         struct print_option *p;
 441
 442         if (flist_empty(&td->opt_list))
 443                 return;
 444
 445         flist_for_each(entry, &td->opt_list) {
 446                 p = flist_entry(entry, struct print_option, list);
 447                 dump_print_option(p);
 448         }
 449 }
 450
 451 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 452 {
 453         struct flist_head *entry;
 454
 455         if (flist_empty(&src->opt_list))
 456                 return;
 457
 458         flist_for_each(entry, &src->opt_list) {
 459                 struct print_option *srcp, *dstp;
 460
 461                 srcp = flist_entry(entry, struct print_option, list);
 462                 dstp = malloc(sizeof(*dstp));
 463                 dstp->name = strdup(srcp->name);
 464                 if (srcp->value)
 465                         dstp->value = strdup(srcp->value);
 466                 else
 467                         dstp->value = NULL;
 468                 flist_add_tail(&dstp->list, &dst->opt_list);
 469         }
 470 }
 471
 472 /*
 473  * Return a free job structure.
 474  */
 475 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 476                                        bool preserve_eo, const char *jobname)
 477 {
 478         struct thread_segment *seg;
 479         struct thread_data *td;
 480
 481         if (global)
 482                 return &def_thread;
 483         if (expand_thread_area()) {
 484                 log_err("error: failed to setup shm segment\n");
 485                 return NULL;
 486         }
 487
 488         seg = &segments[cur_segment];
 489         td = &seg->threads[seg->nr_threads++];
 490         thread_number++;
 491         *td = *parent;
 492
 493         INIT_FLIST_HEAD(&td->opt_list);
 494         if (parent != &def_thread)
 495                 copy_opt_list(td, parent);
 496
 497         td->io_ops = NULL;
 498         td->io_ops_init = 0;
 499         if (!preserve_eo)
 500                 td->eo = NULL;
 501
 502         td->o.uid = td->o.gid = -1U;
 503
 504         dup_files(td, parent);
 505         fio_options_mem_dupe(td);
 506
 507         profile_add_hooks(td);
 508
 509         td->thread_number = thread_number;
 510         td->subjob_number = 0;
 511
 512         if (jobname)
 513                 td->o.name = strdup(jobname);
 514
 515         if (!parent->o.group_reporting || parent == &def_thread)
 516                 stat_number++;
 517
 518         return td;
 519 }
 520
 521 static void put_job(struct thread_data *td)
 522 {
 523         if (td == &def_thread)
 524                 return;
 525
 526         profile_td_exit(td);
 527         flow_exit_job(td);
 528
 529         if (td->error)
 530                 log_info("fio: %s\n", td->verror);
 531
 532         fio_options_free(td);
 533         fio_dump_options_free(td);
 534         if (td->io_ops)
 535                 free_ioengine(td);
 536
 537         if (td->o.name)
 538                 free(td->o.name);
 539
 540         memset(td, 0, sizeof(*td));
 541         segments[cur_segment].nr_threads--;
 542         thread_number--;
 543 }
 544
 545 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 546 {
 547         unsigned long long bs = td->o.min_bs[ddir];
 548
 549         assert(ddir_rw(ddir));
 550
 551         if (td->o.rate[ddir])
 552                 td->rate_bps[ddir] = td->o.rate[ddir];
 553         else
 554                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 555
 556         if (!td->rate_bps[ddir]) {
 557                 log_err("rate lower than supported\n");
 558                 return -1;
 559         }
 560
 561         td->rate_next_io_time[ddir] = 0;
 562         td->rate_io_issue_bytes[ddir] = 0;
 563         td->last_usec[ddir] = 0;
 564         return 0;
 565 }
 566
 567 static int setup_rate(struct thread_data *td)
 568 {
 569         int ret = 0;
 570
 571         for_each_rw_ddir(ddir) {
 572                 if (td->o.rate[ddir] || td->o.rate_iops[ddir]) {
 573                         ret |= __setup_rate(td, ddir);
 574                 }
 575         }
 576         return ret;
 577 }
 578
 579 static int fixed_block_size(struct thread_options *o)
 580 {
 581         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 582                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 583                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 584                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 585                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 586 }
 587
 588 /*
 589  * <3 Johannes
 590  */
 591 static unsigned int gcd(unsigned int m, unsigned int n)
 592 {
 593         if (!n)
 594                 return m;
 595
 596         return gcd(n, m % n);
 597 }
 598
 599 /*
 600  * Lazy way of fixing up options that depend on each other. We could also
 601  * define option callback handlers, but this is easier.
 602  */
 603 static int fixup_options(struct thread_data *td)
 604 {
 605         struct thread_options *o = &td->o;
 606         int ret = 0;
 607
 608         if (read_only && (td_write(td) || td_trim(td))) {
 609                 log_err("fio: trim and write operations are not allowed"
 610                          " with the --readonly parameter.\n");
 611                 ret |= 1;
 612         }
 613
 614 #ifndef CONFIG_PSHARED
 615         if (!o->use_thread) {
 616                 log_info("fio: this platform does not support process shared"
 617                          " mutexes, forcing use of threads. Use the 'thread'"
 618                          " option to get rid of this warning.\n");
 619                 o->use_thread = 1;
 620                 ret |= warnings_fatal;
 621         }
 622 #endif
 623
 624         if (o->write_iolog_file && o->read_iolog_file) {
 625                 log_err("fio: read iolog overrides write_iolog\n");
 626                 free(o->write_iolog_file);
 627                 o->write_iolog_file = NULL;
 628                 ret |= warnings_fatal;
 629         }
 630
 631         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
 632                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
 633                 ret |= 1;
 634         }
 635
 636         if (o->zone_mode == ZONE_MODE_ZBD && !o->create_serialize) {
 637                 log_err("fio: --zonemode=zbd and --create_serialize=0 are not compatible.\n");
 638                 ret |= 1;
 639         }
 640
 641         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
 642                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
 643                 ret |= 1;
 644         }
 645
 646         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
 647                 if (o->zone_size)
 648                         o->zone_mode = ZONE_MODE_STRIDED;
 649                 else
 650                         o->zone_mode = ZONE_MODE_NONE;
 651         }
 652
 653         /*
 654          * Strided zone mode only really works with 1 file.
 655          */
 656         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
 657                 o->zone_mode = ZONE_MODE_NONE;
 658
 659         /*
 660          * If zone_range isn't specified, backward compatibility dictates it
 661          * should be made equal to zone_size.
 662          */
 663         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
 664                 o->zone_range = o->zone_size;
 665
 666         /*
 667          * Reads can do overwrites, we always need to pre-create the file
 668          */
 669         if (td_read(td))
 670                 o->overwrite = 1;
 671
 672         for_each_rw_ddir(ddir) {
 673                 if (!o->min_bs[ddir])
 674                         o->min_bs[ddir] = o->bs[ddir];
 675                 if (!o->max_bs[ddir])
 676                         o->max_bs[ddir] = o->bs[ddir];
 677         }
 678
 679         o->rw_min_bs = -1;
 680         for_each_rw_ddir(ddir) {
 681                 o->rw_min_bs = min(o->rw_min_bs, o->min_bs[ddir]);
 682         }
 683
 684         /*
 685          * For random IO, allow blockalign offset other than min_bs.
 686          */
 687         for_each_rw_ddir(ddir) {
 688                 if (!o->ba[ddir] || !td_random(td))
 689                         o->ba[ddir] = o->min_bs[ddir];
 690         }
 691
 692         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 693             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 694             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 695             !o->norandommap) {
 696                 log_err("fio: Any use of blockalign= turns off randommap\n");
 697                 o->norandommap = 1;
 698                 ret |= warnings_fatal;
 699         }
 700
 701         if (!o->file_size_high)
 702                 o->file_size_high = o->file_size_low;
 703
 704         if (o->start_delay_high) {
 705                 if (!o->start_delay_orig)
 706                         o->start_delay_orig = o->start_delay;
 707                 o->start_delay = rand_between(&td->delay_state,
 708                                                 o->start_delay_orig,
 709                                                 o->start_delay_high);
 710         }
 711
 712         if (o->norandommap && o->verify != VERIFY_NONE
 713             && !fixed_block_size(o))  {
 714                 log_err("fio: norandommap given for variable block sizes, "
 715                         "verify limited\n");
 716                 ret |= warnings_fatal;
 717         }
 718         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 719                 log_err("fio: bs_unaligned may not work with raw io\n");
 720
 721         /*
 722          * thinktime_spin must be less than thinktime
 723          */
 724         if (o->thinktime_spin > o->thinktime)
 725                 o->thinktime_spin = o->thinktime;
 726
 727         /*
 728          * The low water mark cannot be bigger than the iodepth
 729          */
 730         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 731                 o->iodepth_low = o->iodepth;
 732
 733         /*
 734          * If batch number isn't set, default to the same as iodepth
 735          */
 736         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 737                 o->iodepth_batch = o->iodepth;
 738
 739         /*
 740          * If max batch complete number isn't set or set incorrectly,
 741          * default to the same as iodepth_batch_complete_min
 742          */
 743         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 744                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 745
 746         /*
 747          * There's no need to check for in-flight overlapping IOs if the job
 748          * isn't changing data or the maximum iodepth is guaranteed to be 1
 749          * when we are not in offload mode
 750          */
 751         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 752             (!(td_write(td) || td_trim(td)) || o->iodepth == 1) &&
 753             o->io_submit_mode != IO_MODE_OFFLOAD)
 754                 o->serialize_overlap = 0;
 755
 756         if (o->nr_files > td->files_index)
 757                 o->nr_files = td->files_index;
 758
 759         if (o->open_files > o->nr_files || !o->open_files)
 760                 o->open_files = o->nr_files;
 761
 762         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 763             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 764             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 765             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 766                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 767                 ret |= 1;
 768         }
 769         for_each_rw_ddir(ddir) {
 770                 if ((o->rate[ddir] && (o->rate[ddir] < o->ratemin[ddir])) ||
 771                     (o->rate_iops[ddir] && (o->rate_iops[ddir] < o->rate_iops_min[ddir]))) {
 772                         log_err("fio: minimum rate exceeds rate, ddir %d\n", +ddir);
 773                         ret |= 1;
 774                 }
 775         }
 776
 777         if (!o->timeout && o->time_based) {
 778                 log_err("fio: time_based requires a runtime/timeout setting\n");
 779                 o->time_based = 0;
 780                 ret |= warnings_fatal;
 781         }
 782
 783         if (o->fill_device && !o->size)
 784                 o->size = -1ULL;
 785
 786         if (o->verify != VERIFY_NONE) {
 787                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 788                     (o->filename ||
 789                      !(o->unique_filename &&
 790                        strstr(o->filename_format, "$jobname") &&
 791                        strstr(o->filename_format, "$jobnum") &&
 792                        strstr(o->filename_format, "$filenum")))) {
 793                         log_info("fio: multiple writers may overwrite blocks "
 794                                 "that belong to other jobs. This can cause "
 795                                 "verification failures.\n");
 796                         ret |= warnings_fatal;
 797                 }
 798
 799                 /*
 800                  * Warn if verification is requested but no verification of any
 801                  * kind can be started due to time constraints
 802                  */
 803                 if (td_write(td) && o->do_verify && o->timeout &&
 804                     o->time_based && !td_read(td) && !o->verify_backlog) {
 805                         log_info("fio: verification read phase will never "
 806                                  "start because write phase uses all of "
 807                                  "runtime\n");
 808                         ret |= warnings_fatal;
 809                 }
 810
 811                 if (!fio_option_is_set(o, refill_buffers))
 812                         o->refill_buffers = 1;
 813
 814                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 815                     !o->verify_interval)
 816                         o->verify_interval = o->min_bs[DDIR_WRITE];
 817
 818                 /*
 819                  * Verify interval must be smaller or equal to the
 820                  * write size.
 821                  */
 822                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 823                         o->verify_interval = o->min_bs[DDIR_WRITE];
 824                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 825                         o->verify_interval = o->min_bs[DDIR_READ];
 826
 827                 /*
 828                  * Verify interval must be a factor of both min and max
 829                  * write size
 830                  */
 831                 if (!o->verify_interval ||
 832                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 833                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 834                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 835                                                         o->max_bs[DDIR_WRITE]);
 836         }
 837
 838         if (o->pre_read) {
 839                 if (o->invalidate_cache)
 840                         o->invalidate_cache = 0;
 841                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 842                         log_info("fio: cannot pre-read files with an IO engine"
 843                                  " that isn't seekable. Pre-read disabled.\n");
 844                         ret |= warnings_fatal;
 845                 }
 846         }
 847
 848         if (o->unit_base == N2S_NONE) {
 849                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 850                         o->unit_base = N2S_BITPERSEC;
 851                 else
 852                         o->unit_base = N2S_BYTEPERSEC;
 853         }
 854
 855 #ifndef CONFIG_FDATASYNC
 856         if (o->fdatasync_blocks) {
 857                 log_info("fio: this platform does not support fdatasync()"
 858                          " falling back to using fsync().  Use the 'fsync'"
 859                          " option instead of 'fdatasync' to get rid of"
 860                          " this warning\n");
 861                 o->fsync_blocks = o->fdatasync_blocks;
 862                 o->fdatasync_blocks = 0;
 863                 ret |= warnings_fatal;
 864         }
 865 #endif
 866
 867 #ifdef WIN32
 868         /*
 869          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 870          * so fail if we're passed those flags
 871          */
 872         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 873                 log_err("fio: Windows does not support direct or non-buffered io with"
 874                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 875                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 876                 ret |= 1;
 877         }
 878 #endif
 879
 880         /*
 881          * For fully compressible data, just zero them at init time.
 882          * It's faster than repeatedly filling it. For non-zero
 883          * compression, we should have refill_buffers set. Set it, unless
 884          * the job file already changed it.
 885          */
 886         if (o->compress_percentage) {
 887                 if (o->compress_percentage == 100) {
 888                         o->zero_buffers = 1;
 889                         o->compress_percentage = 0;
 890                 } else if (!fio_option_is_set(o, refill_buffers)) {
 891                         o->refill_buffers = 1;
 892                         td->flags |= TD_F_REFILL_BUFFERS;
 893                 }
 894         }
 895
 896         /*
 897          * Using a non-uniform random distribution excludes usage of
 898          * a random map
 899          */
 900         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 901                 o->norandommap = 1;
 902
 903         /*
 904          * If size is set but less than the min block size, complain
 905          */
 906         if (o->size && o->size < td_min_bs(td)) {
 907                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 908                         (unsigned long long) o->size, td_min_bs(td));
 909                 ret |= 1;
 910         }
 911
 912         /*
 913          * O_ATOMIC implies O_DIRECT
 914          */
 915         if (o->oatomic)
 916                 o->odirect = 1;
 917
 918         /*
 919          * If randseed is set, that overrides randrepeat
 920          */
 921         if (fio_option_is_set(o, rand_seed))
 922                 o->rand_repeatable = 0;
 923
 924         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 925                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 926                 ret |= 1;
 927         }
 928
 929         if (fio_option_is_set(o, gtod_cpu)) {
 930                 fio_gtod_init();
 931                 fio_gtod_set_cpu(o->gtod_cpu);
 932                 fio_gtod_offload = 1;
 933         }
 934
 935         td->loops = o->loops;
 936         if (!td->loops)
 937                 td->loops = 1;
 938
 939         if (o->block_error_hist && o->nr_files != 1) {
 940                 log_err("fio: block error histogram only available "
 941                         "with a single file per job, but %d files "
 942                         "provided\n", o->nr_files);
 943                 ret |= 1;
 944         }
 945
 946         if (o->disable_lat)
 947                 o->lat_percentiles = 0;
 948         if (o->disable_clat)
 949                 o->clat_percentiles = 0;
 950         if (o->disable_slat)
 951                 o->slat_percentiles = 0;
 952
 953         /*
 954          * Fix these up to be nsec internally
 955          */
 956         for_each_rw_ddir(ddir)
 957                 o->max_latency[ddir] *= 1000ULL;
 958
 959         o->latency_target *= 1000ULL;
 960
 961         return ret;
 962 }
 963
 964 static void init_rand_file_service(struct thread_data *td)
 965 {
 966         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 967         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 968
 969         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 970                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, td->random_center, seed);
 971                 zipf_disable_hash(&td->next_file_zipf);
 972         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 973                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, td->random_center, seed);
 974                 zipf_disable_hash(&td->next_file_zipf);
 975         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 976                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, td->random_center, seed);
 977                 gauss_disable_hash(&td->next_file_gauss);
 978         }
 979 }
 980
 981 void td_fill_verify_state_seed(struct thread_data *td)
 982 {
 983         bool use64;
 984
 985         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 986                 use64 = true;
 987         else
 988                 use64 = false;
 989
 990         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
 991                 use64);
 992 }
 993
 994 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
 995 {
 996         uint64_t read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
 997         uint64_t write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
 998         uint64_t trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
 999         int i;
1000
1001         /*
1002          * trimwrite is special in that we need to generate the same
1003          * offsets to get the "write after trim" effect. If we are
1004          * using bssplit to set buffer length distributions, ensure that
1005          * we seed the trim and write generators identically. Ditto for
1006          * verify, read and writes must have the same seed, if we are doing
1007          * read verify.
1008          */
1009         if (td->o.verify != VERIFY_NONE)
1010                 write_seed = read_seed;
1011         if (td_trimwrite(td))
1012                 trim_seed = write_seed;
1013         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1014         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1015         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1016
1017         td_fill_verify_state_seed(td);
1018         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1019
1020         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1021                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1022         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1023                 init_rand_file_service(td);
1024
1025         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1026         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1027         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1028         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1029         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1030         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1031         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1032         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1033         init_rand_seed(&td->prio_state, td->rand_seeds[FIO_RAND_PRIO_CMDS], false);
1034
1035         if (!td_random(td))
1036                 return;
1037
1038         if (td->o.rand_repeatable)
1039                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1040
1041         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1042
1043         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1044                 struct frand_state *s = &td->seq_rand_state[i];
1045
1046                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1047         }
1048 }
1049
1050 void td_fill_rand_seeds(struct thread_data *td)
1051 {
1052         bool use64;
1053
1054         if (td->o.allrand_repeatable) {
1055                 unsigned int i;
1056
1057                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1058                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1059                                 + i;
1060         }
1061
1062         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1063                 use64 = true;
1064         else
1065                 use64 = false;
1066
1067         td_fill_rand_seeds_internal(td, use64);
1068
1069         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1070         frand_copy(&td->buf_state_prev, &td->buf_state);
1071 }
1072
1073 /*
1074  * Initializes the ioengine configured for a job, if it has not been done so
1075  * already.
1076  */
1077 int ioengine_load(struct thread_data *td)
1078 {
1079         if (!td->o.ioengine) {
1080                 log_err("fio: internal fault, no IO engine specified\n");
1081                 return 1;
1082         }
1083
1084         if (td->io_ops) {
1085                 struct ioengine_ops *ops;
1086                 void *dlhandle;
1087
1088                 /* An engine is loaded, but the requested ioengine
1089                  * may have changed.
1090                  */
1091                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1092                         /* The right engine is already loaded */
1093                         return 0;
1094                 }
1095
1096                 /*
1097                  * Name of file and engine may be different, load ops
1098                  * for this name and see if they match. If they do, then
1099                  * the engine is unchanged.
1100                  */
1101                 dlhandle = td->io_ops->dlhandle;
1102                 ops = load_ioengine(td);
1103                 if (!ops)
1104                         goto fail;
1105
1106                 if (ops == td->io_ops && dlhandle == td->io_ops->dlhandle)
1107                         return 0;
1108
1109                 if (dlhandle && dlhandle != td->io_ops->dlhandle)
1110                         dlclose(dlhandle);
1111
1112                 /* Unload the old engine. */
1113                 free_ioengine(td);
1114         }
1115
1116         td->io_ops = load_ioengine(td);
1117         if (!td->io_ops)
1118                 goto fail;
1119
1120         if (td->io_ops->option_struct_size && td->io_ops->options) {
1121                 /*
1122                  * In cases where td->eo is set, clone it for a child thread.
1123                  * This requires that the parent thread has the same ioengine,
1124                  * but that requirement must be enforced by the code which
1125                  * cloned the thread.
1126                  */
1127                 void *origeo = td->eo;
1128                 /*
1129                  * Otherwise use the default thread options.
1130                  */
1131                 if (!origeo && td != &def_thread && def_thread.eo &&
1132                     def_thread.io_ops->options == td->io_ops->options)
1133                         origeo = def_thread.eo;
1134
1135                 options_init(td->io_ops->options);
1136                 td->eo = malloc(td->io_ops->option_struct_size);
1137                 /*
1138                  * Use the default thread as an option template if this uses the
1139                  * same options structure and there are non-default options
1140                  * used.
1141                  */
1142                 if (origeo) {
1143                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1144                         options_mem_dupe(td->io_ops->options, td->eo);
1145                 } else {
1146                         memset(td->eo, 0, td->io_ops->option_struct_size);
1147                         fill_default_options(td->eo, td->io_ops->options);
1148                 }
1149                 *(struct thread_data **)td->eo = td;
1150         }
1151
1152         if (td->o.odirect)
1153                 td->io_ops->flags |= FIO_RAWIO;
1154
1155         td_set_ioengine_flags(td);
1156         return 0;
1157
1158 fail:
1159         log_err("fio: failed to load engine\n");
1160         return 1;
1161
1162 }
1163
1164 static void init_flags(struct thread_data *td)
1165 {
1166         struct thread_options *o = &td->o;
1167         int i;
1168
1169         if (o->verify_backlog)
1170                 td->flags |= TD_F_VER_BACKLOG;
1171         if (o->trim_backlog)
1172                 td->flags |= TD_F_TRIM_BACKLOG;
1173         if (o->read_iolog_file)
1174                 td->flags |= TD_F_READ_IOLOG;
1175         if (o->refill_buffers)
1176                 td->flags |= TD_F_REFILL_BUFFERS;
1177         /*
1178          * Always scramble buffers if asked to
1179          */
1180         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1181                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1182         /*
1183          * But also scramble buffers, unless we were explicitly asked
1184          * to zero them.
1185          */
1186         if (o->scramble_buffers && !(o->zero_buffers &&
1187             fio_option_is_set(o, zero_buffers)))
1188                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1189         if (o->verify != VERIFY_NONE)
1190                 td->flags |= TD_F_DO_VERIFY;
1191
1192         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1193                 td->flags |= TD_F_NEED_LOCK;
1194
1195         if (o->mem_type == MEM_CUDA_MALLOC)
1196                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1197
1198         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1199                 if (option_check_rate(td, i)) {
1200                         td->flags |= TD_F_CHECK_RATE;
1201                         break;
1202                 }
1203         }
1204 }
1205
1206 static int setup_random_seeds(struct thread_data *td)
1207 {
1208         uint64_t seed;
1209         unsigned int i;
1210
1211         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1212                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1213                 if (!ret)
1214                         td_fill_rand_seeds(td);
1215                 return ret;
1216         }
1217
1218         seed = td->o.rand_seed;
1219         for (i = 0; i < 4; i++)
1220                 seed *= 0x9e370001UL;
1221
1222         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1223                 td->rand_seeds[i] = seed * td->thread_number + i;
1224                 seed *= 0x9e370001UL;
1225         }
1226
1227         td_fill_rand_seeds(td);
1228         return 0;
1229 }
1230
1231 enum {
1232         FPRE_NONE = 0,
1233         FPRE_JOBNAME,
1234         FPRE_JOBNUM,
1235         FPRE_FILENUM,
1236         FPRE_CLIENTUID
1237 };
1238
1239 static struct fpre_keyword {
1240         const char *keyword;
1241         size_t strlen;
1242         int key;
1243 } fpre_keywords[] = {
1244         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1245         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1246         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1247         { .keyword = "$clientuid",      .key = FPRE_CLIENTUID, },
1248         { .keyword = NULL, },
1249         };
1250
1251 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1252                            const char *jobname, int jobnum, int filenum)
1253 {
1254         struct fpre_keyword *f;
1255         char copy[PATH_MAX];
1256         size_t dst_left = PATH_MAX - 1;
1257
1258         if (!o->filename_format || !strlen(o->filename_format)) {
1259                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1260                 return buf;
1261         }
1262
1263         for (f = &fpre_keywords[0]; f->keyword; f++)
1264                 f->strlen = strlen(f->keyword);
1265
1266         snprintf(buf, buf_size, "%s", o->filename_format);
1267
1268         memset(copy, 0, sizeof(copy));
1269         for (f = &fpre_keywords[0]; f->keyword; f++) {
1270                 do {
1271                         size_t pre_len, post_start = 0;
1272                         char *str, *dst = copy;
1273
1274                         str = strcasestr(buf, f->keyword);
1275                         if (!str)
1276                                 break;
1277
1278                         pre_len = str - buf;
1279                         if (strlen(str) != f->strlen)
1280                                 post_start = pre_len + f->strlen;
1281
1282                         if (pre_len) {
1283                                 strncpy(dst, buf, pre_len);
1284                                 dst += pre_len;
1285                                 dst_left -= pre_len;
1286                         }
1287
1288                         switch (f->key) {
1289                         case FPRE_JOBNAME: {
1290                                 int ret;
1291
1292                                 ret = snprintf(dst, dst_left, "%s", jobname);
1293                                 if (ret < 0)
1294                                         break;
1295                                 else if (ret > dst_left) {
1296                                         log_err("fio: truncated filename\n");
1297                                         dst += dst_left;
1298                                         dst_left = 0;
1299                                 } else {
1300                                         dst += ret;
1301                                         dst_left -= ret;
1302                                 }
1303                                 break;
1304                                 }
1305                         case FPRE_JOBNUM: {
1306                                 int ret;
1307
1308                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1309                                 if (ret < 0)
1310                                         break;
1311                                 else if (ret > dst_left) {
1312                                         log_err("fio: truncated filename\n");
1313                                         dst += dst_left;
1314                                         dst_left = 0;
1315                                 } else {
1316                                         dst += ret;
1317                                         dst_left -= ret;
1318                                 }
1319                                 break;
1320                                 }
1321                         case FPRE_FILENUM: {
1322                                 int ret;
1323
1324                                 ret = snprintf(dst, dst_left, "%d", filenum);
1325                                 if (ret < 0)
1326                                         break;
1327                                 else if (ret > dst_left) {
1328                                         log_err("fio: truncated filename\n");
1329                                         dst += dst_left;
1330                                         dst_left = 0;
1331                                 } else {
1332                                         dst += ret;
1333                                         dst_left -= ret;
1334                                 }
1335                                 break;
1336                                 }
1337                         case FPRE_CLIENTUID: {
1338                                 int ret;
1339                                 ret = snprintf(dst, dst_left, "%s", client_sockaddr_str);
1340                                 if (ret < 0)
1341                                         break;
1342                                 else if (ret > dst_left) {
1343                                         log_err("fio: truncated filename\n");
1344                                         dst += dst_left;
1345                                         dst_left = 0;
1346                                 } else {
1347                                         dst += ret;
1348                                         dst_left -= ret;
1349                                 }
1350                                 break;
1351                                 }
1352                         default:
1353                                 assert(0);
1354                                 break;
1355                         }
1356
1357                         if (post_start)
1358                                 strncpy(dst, buf + post_start, dst_left);
1359
1360                         snprintf(buf, buf_size, "%s", copy);
1361                 } while (1);
1362         }
1363
1364         return buf;
1365 }
1366
1367 bool parse_dryrun(void)
1368 {
1369         return dump_cmdline || parse_only;
1370 }
1371
1372 static void gen_log_name(char *name, size_t size, const char *logtype,
1373                          const char *logname, unsigned int num,
1374                          const char *suf, int per_job)
1375 {
1376         if (per_job)
1377                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1378         else
1379                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1380 }
1381
1382 static int check_waitees(char *waitee)
1383 {
1384         struct thread_data *td;
1385         int i, ret = 0;
1386
1387         for_each_td(td, i) {
1388                 if (td->subjob_number)
1389                         continue;
1390
1391                 ret += !strcmp(td->o.name, waitee);
1392         }
1393
1394         return ret;
1395 }
1396
1397 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1398 {
1399         int nw;
1400
1401         if (!o->wait_for)
1402                 return true;
1403
1404         if (!strcmp(jobname, o->wait_for)) {
1405                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1406                                 jobname, o->wait_for);
1407                 return false;
1408         }
1409
1410         if (!(nw = check_waitees(o->wait_for))) {
1411                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1412                 return false;
1413         }
1414
1415         if (nw > 1) {
1416                 log_err("%s: multiple waitees %s found,\n"
1417                         "please avoid duplicates when using wait_for option.\n",
1418                                 jobname, o->wait_for);
1419                 return false;
1420         }
1421
1422         return true;
1423 }
1424
1425 /*
1426  * Treat an empty log file name the same as a one not given
1427  */
1428 static const char *make_log_name(const char *logname, const char *jobname)
1429 {
1430         if (logname && strcmp(logname, ""))
1431                 return logname;
1432
1433         return jobname;
1434 }
1435
1436 /*
1437  * Adds a job to the list of things todo. Sanitizes the various options
1438  * to make sure we don't have conflicts, and initializes various
1439  * members of td.
1440  */
1441 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1442                    int recursed, int client_type)
1443 {
1444         unsigned int i;
1445         char fname[PATH_MAX + 1];
1446         int numjobs, file_alloced;
1447         struct thread_options *o = &td->o;
1448         char logname[PATH_MAX + 32];
1449
1450         /*
1451          * the def_thread is just for options, it's not a real job
1452          */
1453         if (td == &def_thread)
1454                 return 0;
1455
1456         init_flags(td);
1457
1458         /*
1459          * if we are just dumping the output command line, don't add the job
1460          */
1461         if (parse_dryrun()) {
1462                 put_job(td);
1463                 return 0;
1464         }
1465
1466         td->client_type = client_type;
1467
1468         if (profile_td_init(td))
1469                 goto err;
1470
1471         if (ioengine_load(td))
1472                 goto err;
1473
1474         file_alloced = 0;
1475         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1476                 file_alloced = 1;
1477
1478                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1479                         add_file(td, jobname, job_add_num, 0);
1480                 else {
1481                         for (i = 0; i < o->nr_files; i++)
1482                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1483                 }
1484         }
1485
1486         if (setup_random_seeds(td)) {
1487                 td_verror(td, errno, "setup_random_seeds");
1488                 goto err;
1489         }
1490
1491         if (fixup_options(td))
1492                 goto err;
1493
1494         /*
1495          * Belongs to fixup_options, but o->name is not necessarily set as yet
1496          */
1497         if (!wait_for_ok(jobname, o))
1498                 goto err;
1499
1500         flow_init_job(td);
1501
1502         /*
1503          * IO engines only need this for option callbacks, and the address may
1504          * change in subprocesses.
1505          */
1506         if (td->eo)
1507                 *(struct thread_data **)td->eo = NULL;
1508
1509         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1510                 struct fio_file *f;
1511
1512                 for_each_file(td, f, i)
1513                         f->real_file_size = -1ULL;
1514         }
1515
1516         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1517
1518         td->ts.clat_percentiles = o->clat_percentiles;
1519         td->ts.lat_percentiles = o->lat_percentiles;
1520         td->ts.slat_percentiles = o->slat_percentiles;
1521         td->ts.percentile_precision = o->percentile_precision;
1522         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1523         td->ts.sig_figs = o->sig_figs;
1524
1525         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1526                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1527                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1528                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1529                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1530                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1531                 td->ts.clat_high_prio_stat[i].min_val = ULONG_MAX;
1532                 td->ts.clat_low_prio_stat[i].min_val = ULONG_MAX;
1533         }
1534         td->ts.sync_stat.min_val = ULONG_MAX;
1535         td->ddir_seq_nr = o->ddir_seq_nr;
1536
1537         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1538                 prev_group_jobs = 0;
1539                 groupid++;
1540                 if (groupid == INT_MAX) {
1541                         log_err("fio: too many groups defined\n");
1542                         goto err;
1543                 }
1544         }
1545
1546         td->groupid = groupid;
1547         prev_group_jobs++;
1548
1549         if (setup_rate(td))
1550                 goto err;
1551
1552         if (o->write_lat_log) {
1553                 struct log_params p = {
1554                         .td = td,
1555                         .avg_msec = o->log_avg_msec,
1556                         .hist_msec = o->log_hist_msec,
1557                         .hist_coarseness = o->log_hist_coarseness,
1558                         .log_type = IO_LOG_TYPE_LAT,
1559                         .log_offset = o->log_offset,
1560                         .log_gz = o->log_gz,
1561                         .log_gz_store = o->log_gz_store,
1562                 };
1563                 const char *pre = make_log_name(o->lat_log_file, o->name);
1564                 const char *suf;
1565
1566                 if (p.log_gz_store)
1567                         suf = "log.fz";
1568                 else
1569                         suf = "log";
1570
1571                 gen_log_name(logname, sizeof(logname), "lat", pre,
1572                                 td->thread_number, suf, o->per_job_logs);
1573                 setup_log(&td->lat_log, &p, logname);
1574
1575                 gen_log_name(logname, sizeof(logname), "slat", pre,
1576                                 td->thread_number, suf, o->per_job_logs);
1577                 setup_log(&td->slat_log, &p, logname);
1578
1579                 gen_log_name(logname, sizeof(logname), "clat", pre,
1580                                 td->thread_number, suf, o->per_job_logs);
1581                 setup_log(&td->clat_log, &p, logname);
1582
1583         }
1584
1585         if (o->write_hist_log) {
1586                 struct log_params p = {
1587                         .td = td,
1588                         .avg_msec = o->log_avg_msec,
1589                         .hist_msec = o->log_hist_msec,
1590                         .hist_coarseness = o->log_hist_coarseness,
1591                         .log_type = IO_LOG_TYPE_HIST,
1592                         .log_offset = o->log_offset,
1593                         .log_gz = o->log_gz,
1594                         .log_gz_store = o->log_gz_store,
1595                 };
1596                 const char *pre = make_log_name(o->hist_log_file, o->name);
1597                 const char *suf;
1598
1599 #ifndef CONFIG_ZLIB
1600                 if (td->client_type) {
1601                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1602                         goto err;
1603                 }
1604 #endif
1605
1606                 if (p.log_gz_store)
1607                         suf = "log.fz";
1608                 else
1609                         suf = "log";
1610
1611                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1612                                 td->thread_number, suf, o->per_job_logs);
1613                 setup_log(&td->clat_hist_log, &p, logname);
1614         }
1615
1616         if (o->write_bw_log) {
1617                 struct log_params p = {
1618                         .td = td,
1619                         .avg_msec = o->log_avg_msec,
1620                         .hist_msec = o->log_hist_msec,
1621                         .hist_coarseness = o->log_hist_coarseness,
1622                         .log_type = IO_LOG_TYPE_BW,
1623                         .log_offset = o->log_offset,
1624                         .log_gz = o->log_gz,
1625                         .log_gz_store = o->log_gz_store,
1626                 };
1627                 const char *pre = make_log_name(o->bw_log_file, o->name);
1628                 const char *suf;
1629
1630                 if (fio_option_is_set(o, bw_avg_time))
1631                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1632                 else
1633                         o->bw_avg_time = p.avg_msec;
1634
1635                 p.hist_msec = o->log_hist_msec;
1636                 p.hist_coarseness = o->log_hist_coarseness;
1637
1638                 if (p.log_gz_store)
1639                         suf = "log.fz";
1640                 else
1641                         suf = "log";
1642
1643                 gen_log_name(logname, sizeof(logname), "bw", pre,
1644                                 td->thread_number, suf, o->per_job_logs);
1645                 setup_log(&td->bw_log, &p, logname);
1646         }
1647         if (o->write_iops_log) {
1648                 struct log_params p = {
1649                         .td = td,
1650                         .avg_msec = o->log_avg_msec,
1651                         .hist_msec = o->log_hist_msec,
1652                         .hist_coarseness = o->log_hist_coarseness,
1653                         .log_type = IO_LOG_TYPE_IOPS,
1654                         .log_offset = o->log_offset,
1655                         .log_gz = o->log_gz,
1656                         .log_gz_store = o->log_gz_store,
1657                 };
1658                 const char *pre = make_log_name(o->iops_log_file, o->name);
1659                 const char *suf;
1660
1661                 if (fio_option_is_set(o, iops_avg_time))
1662                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1663                 else
1664                         o->iops_avg_time = p.avg_msec;
1665
1666                 p.hist_msec = o->log_hist_msec;
1667                 p.hist_coarseness = o->log_hist_coarseness;
1668
1669                 if (p.log_gz_store)
1670                         suf = "log.fz";
1671                 else
1672                         suf = "log";
1673
1674                 gen_log_name(logname, sizeof(logname), "iops", pre,
1675                                 td->thread_number, suf, o->per_job_logs);
1676                 setup_log(&td->iops_log, &p, logname);
1677         }
1678
1679         if (!o->name)
1680                 o->name = strdup(jobname);
1681
1682         if (output_format & FIO_OUTPUT_NORMAL) {
1683                 if (!job_add_num) {
1684                         if (is_backend && !recursed)
1685                                 fio_server_send_add_job(td);
1686
1687                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1688                                 char *c1, *c2, *c3, *c4;
1689                                 char *c5 = NULL, *c6 = NULL;
1690                                 int i2p = is_power_of_2(o->kb_base);
1691                                 struct buf_output out;
1692
1693                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1694                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1695                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1696                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1697
1698                                 if (!o->bs_is_seq_rand) {
1699                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1700                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1701                                 }
1702
1703                                 buf_output_init(&out);
1704                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1705                                                         td->groupid,
1706                                                         ddir_str(o->td_ddir));
1707
1708                                 if (o->bs_is_seq_rand)
1709                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1710                                                         c1, c2, c3, c4);
1711                                 else
1712                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1713                                                         c1, c2, c3, c4, c5, c6);
1714
1715                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1716                                                 td->io_ops->name, o->iodepth);
1717                                 log_info_buf(out.buf, out.buflen);
1718                                 buf_output_free(&out);
1719
1720                                 free(c1);
1721                                 free(c2);
1722                                 free(c3);
1723                                 free(c4);
1724                                 free(c5);
1725                                 free(c6);
1726                         }
1727                 } else if (job_add_num == 1)
1728                         log_info("...\n");
1729         }
1730
1731         if (td_steadystate_init(td))
1732                 goto err;
1733
1734         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1735                 goto err;
1736
1737         if (merge_blktrace_only) {
1738                 put_job(td);
1739                 return 0;
1740         }
1741
1742         /*
1743          * recurse add identical jobs, clear numjobs and stonewall options
1744          * as they don't apply to sub-jobs
1745          */
1746         numjobs = o->numjobs;
1747         while (--numjobs) {
1748                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1749
1750                 if (!td_new)
1751                         goto err;
1752
1753                 td_new->o.numjobs = 1;
1754                 td_new->o.stonewall = 0;
1755                 td_new->o.new_group = 0;
1756                 td_new->subjob_number = numjobs;
1757                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1758                 td_new->o.ss_limit = o->ss_limit;
1759
1760                 if (file_alloced) {
1761                         if (td_new->files) {
1762                                 struct fio_file *f;
1763                                 for_each_file(td_new, f, i)
1764                                         fio_file_free(f);
1765                                 free(td_new->files);
1766                                 td_new->files = NULL;
1767                         }
1768                         td_new->files_index = 0;
1769                         td_new->files_size = 0;
1770                         if (td_new->o.filename) {
1771                                 free(td_new->o.filename);
1772                                 td_new->o.filename = NULL;
1773                         }
1774                 }
1775
1776                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1777                         goto err;
1778         }
1779
1780         return 0;
1781 err:
1782         put_job(td);
1783         return -1;
1784 }
1785
1786 /*
1787  * Parse as if 'o' was a command line
1788  */
1789 void add_job_opts(const char **o, int client_type)
1790 {
1791         struct thread_data *td, *td_parent;
1792         int i, in_global = 1;
1793         char jobname[32];
1794
1795         i = 0;
1796         td_parent = td = NULL;
1797         while (o[i]) {
1798                 if (!strncmp(o[i], "name", 4)) {
1799                         in_global = 0;
1800                         if (td)
1801                                 add_job(td, jobname, 0, 0, client_type);
1802                         td = NULL;
1803                         sprintf(jobname, "%s", o[i] + 5);
1804                 }
1805                 if (in_global && !td_parent)
1806                         td_parent = get_new_job(true, &def_thread, false, jobname);
1807                 else if (!in_global && !td) {
1808                         if (!td_parent)
1809                                 td_parent = &def_thread;
1810                         td = get_new_job(false, td_parent, false, jobname);
1811                 }
1812                 if (in_global)
1813                         fio_options_parse(td_parent, (char **) &o[i], 1);
1814                 else
1815                         fio_options_parse(td, (char **) &o[i], 1);
1816                 i++;
1817         }
1818
1819         if (td)
1820                 add_job(td, jobname, 0, 0, client_type);
1821 }
1822
1823 static int skip_this_section(const char *name)
1824 {
1825         int i;
1826
1827         if (!nr_job_sections)
1828                 return 0;
1829         if (!strncmp(name, "global", 6))
1830                 return 0;
1831
1832         for (i = 0; i < nr_job_sections; i++)
1833                 if (!strcmp(job_sections[i], name))
1834                         return 0;
1835
1836         return 1;
1837 }
1838
1839 static int is_empty_or_comment(char *line)
1840 {
1841         unsigned int i;
1842
1843         for (i = 0; i < strlen(line); i++) {
1844                 if (line[i] == ';')
1845                         return 1;
1846                 if (line[i] == '#')
1847                         return 1;
1848                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1849                         return 0;
1850         }
1851
1852         return 1;
1853 }
1854
1855 /*
1856  * This is our [ini] type file parser.
1857  */
1858 static int __parse_jobs_ini(struct thread_data *td,
1859                 char *file, int is_buf, int stonewall_flag, int type,
1860                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1861 {
1862         bool global = false;
1863         bool stdin_occupied = false;
1864         char *string;
1865         FILE *f;
1866         char *p;
1867         int ret = 0, stonewall;
1868         int first_sect = 1;
1869         int skip_fgets = 0;
1870         int inside_skip = 0;
1871         char **opts;
1872         int i, alloc_opts, num_opts;
1873
1874         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1875         assert(td || !nested);
1876
1877         if (is_buf)
1878                 f = NULL;
1879         else {
1880                 if (!strcmp(file, "-")) {
1881                         f = stdin;
1882                         stdin_occupied = true;
1883                 } else
1884                         f = fopen(file, "r");
1885
1886                 if (!f) {
1887                         int __err = errno;
1888
1889                         log_err("fio: unable to open '%s' job file\n", file);
1890                         if (td)
1891                                 td_verror(td, __err, "job file open");
1892                         return 1;
1893                 }
1894         }
1895
1896         string = malloc(OPT_LEN_MAX);
1897
1898         /*
1899          * it's really 256 + small bit, 280 should suffice
1900          */
1901         if (!nested) {
1902                 name = malloc(280);
1903                 memset(name, 0, 280);
1904         }
1905
1906         opts = NULL;
1907         if (nested && popts) {
1908                 opts = *popts;
1909                 alloc_opts = *aopts;
1910                 num_opts = *nopts;
1911         }
1912
1913         if (!opts) {
1914                 alloc_opts = 8;
1915                 opts = malloc(sizeof(char *) * alloc_opts);
1916                 num_opts = 0;
1917         }
1918
1919         stonewall = stonewall_flag;
1920         do {
1921                 /*
1922                  * if skip_fgets is set, we already have loaded a line we
1923                  * haven't handled.
1924                  */
1925                 if (!skip_fgets) {
1926                         if (is_buf)
1927                                 p = strsep(&file, "\n");
1928                         else
1929                                 p = fgets(string, OPT_LEN_MAX, f);
1930                         if (!p)
1931                                 break;
1932                 }
1933
1934                 skip_fgets = 0;
1935                 strip_blank_front(&p);
1936                 strip_blank_end(p);
1937
1938                 dprint(FD_PARSE, "%s\n", p);
1939                 if (is_empty_or_comment(p))
1940                         continue;
1941
1942                 if (!nested) {
1943                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1944                                 if (inside_skip)
1945                                         continue;
1946
1947                                 log_err("fio: option <%s> outside of "
1948                                         "[] job section\n", p);
1949                                 ret = 1;
1950                                 break;
1951                         }
1952
1953                         name[strlen(name) - 1] = '\0';
1954
1955                         if (skip_this_section(name)) {
1956                                 inside_skip = 1;
1957                                 continue;
1958                         } else
1959                                 inside_skip = 0;
1960
1961                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1962
1963                         global = !strncmp(name, "global", 6);
1964
1965                         if (dump_cmdline) {
1966                                 if (first_sect)
1967                                         log_info("fio ");
1968                                 if (!global)
1969                                         log_info("--name=%s ", name);
1970                                 first_sect = 0;
1971                         }
1972
1973                         td = get_new_job(global, &def_thread, false, name);
1974                         if (!td) {
1975                                 ret = 1;
1976                                 break;
1977                         }
1978
1979                         /*
1980                          * Separate multiple job files by a stonewall
1981                          */
1982                         if (!global && stonewall) {
1983                                 td->o.stonewall = stonewall;
1984                                 stonewall = 0;
1985                         }
1986
1987                         num_opts = 0;
1988                         memset(opts, 0, alloc_opts * sizeof(char *));
1989                 }
1990                 else
1991                         skip_fgets = 1;
1992
1993                 while (1) {
1994                         if (!skip_fgets) {
1995                                 if (is_buf)
1996                                         p = strsep(&file, "\n");
1997                                 else
1998                                         p = fgets(string, OPT_LEN_MAX, f);
1999                                 if (!p)
2000                                         break;
2001                                 dprint(FD_PARSE, "%s", p);
2002                         }
2003                         else
2004                                 skip_fgets = 0;
2005
2006                         if (is_empty_or_comment(p))
2007                                 continue;
2008
2009                         strip_blank_front(&p);
2010
2011                         /*
2012                          * new section, break out and make sure we don't
2013                          * fgets() a new line at the top.
2014                          */
2015                         if (p[0] == '[') {
2016                                 if (nested) {
2017                                         log_err("No new sections in included files\n");
2018                                         ret = 1;
2019                                         goto out;
2020                                 }
2021
2022                                 skip_fgets = 1;
2023                                 break;
2024                         }
2025
2026                         strip_blank_end(p);
2027
2028                         if (!strncmp(p, "include", strlen("include"))) {
2029                                 char *filename = p + strlen("include") + 1,
2030                                         *ts, *full_fn = NULL;
2031
2032                                 /*
2033                                  * Allow for the include filename
2034                                  * specification to be relative.
2035                                  */
2036                                 if (access(filename, F_OK) &&
2037                                     (ts = strrchr(file, '/'))) {
2038                                         if (asprintf(&full_fn, "%.*s%s",
2039                                                  (int)(ts - file + 1), file,
2040                                                  filename) < 0) {
2041                                                 ret = ENOMEM;
2042                                                 break;
2043                                         }
2044                                         filename = full_fn;
2045                                 }
2046
2047                                 ret = __parse_jobs_ini(td, filename, is_buf,
2048                                                        stonewall_flag, type, 1,
2049                                                        name, &opts,
2050                                                        &alloc_opts, &num_opts);
2051
2052                                 if (ret) {
2053                                         log_err("Error %d while parsing "
2054                                                 "include file %s\n",
2055                                                 ret, filename);
2056                                 }
2057
2058                                 if (full_fn)
2059                                         free(full_fn);
2060
2061                                 if (ret)
2062                                         break;
2063
2064                                 continue;
2065                         }
2066
2067                         if (num_opts == alloc_opts) {
2068                                 alloc_opts <<= 1;
2069                                 opts = realloc(opts,
2070                                                 alloc_opts * sizeof(char *));
2071                         }
2072
2073                         opts[num_opts] = strdup(p);
2074                         num_opts++;
2075                 }
2076
2077                 if (nested) {
2078                         *popts = opts;
2079                         *aopts = alloc_opts;
2080                         *nopts = num_opts;
2081                         goto out;
2082                 }
2083
2084                 ret = fio_options_parse(td, opts, num_opts);
2085
2086                 if (!ret && td->o.read_iolog_file != NULL) {
2087                         char *fname = get_name_by_idx(td->o.read_iolog_file,
2088                                                       td->subjob_number);
2089                         if (!strcmp(fname, "-")) {
2090                                 if (stdin_occupied) {
2091                                         log_err("fio: only one user (read_iolog_file/job "
2092                                                 "file) of stdin is permitted at once but "
2093                                                 "more than one was found.\n");
2094                                         ret = 1;
2095                                 }
2096                                 stdin_occupied = true;
2097                         }
2098                 }
2099                 if (!ret) {
2100                         if (dump_cmdline)
2101                                 dump_opt_list(td);
2102
2103                         ret = add_job(td, name, 0, 0, type);
2104                 } else {
2105                         log_err("fio: job %s dropped\n", name);
2106                         put_job(td);
2107                 }
2108
2109                 for (i = 0; i < num_opts; i++)
2110                         free(opts[i]);
2111                 num_opts = 0;
2112         } while (!ret);
2113
2114         if (dump_cmdline)
2115                 log_info("\n");
2116
2117         i = 0;
2118         while (i < nr_job_sections) {
2119                 free(job_sections[i]);
2120                 i++;
2121         }
2122
2123         free(opts);
2124 out:
2125         free(string);
2126         if (!nested)
2127                 free(name);
2128         if (!is_buf && f != stdin)
2129                 fclose(f);
2130         return ret;
2131 }
2132
2133 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2134 {
2135         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2136                         0, NULL, NULL, NULL, NULL);
2137 }
2138
2139 static int fill_def_thread(void)
2140 {
2141         memset(&def_thread, 0, sizeof(def_thread));
2142         INIT_FLIST_HEAD(&def_thread.opt_list);
2143
2144         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2145         def_thread.o.error_dump = 1;
2146
2147         /*
2148          * fill default options
2149          */
2150         fio_fill_default_options(&def_thread);
2151         return 0;
2152 }
2153
2154 static void show_debug_categories(void)
2155 {
2156 #ifdef FIO_INC_DEBUG
2157         const struct debug_level *dl = &debug_levels[0];
2158         int curlen, first = 1;
2159
2160         curlen = 0;
2161         while (dl->name) {
2162                 int has_next = (dl + 1)->name != NULL;
2163
2164                 if (first || curlen + strlen(dl->name) >= 80) {
2165                         if (!first) {
2166                                 printf("\n");
2167                                 curlen = 0;
2168                         }
2169                         curlen += printf("\t\t\t%s", dl->name);
2170                         curlen += 3 * (8 - 1);
2171                         if (has_next)
2172                                 curlen += printf(",");
2173                 } else {
2174                         curlen += printf("%s", dl->name);
2175                         if (has_next)
2176                                 curlen += printf(",");
2177                 }
2178                 dl++;
2179                 first = 0;
2180         }
2181         printf("\n");
2182 #endif
2183 }
2184
2185 /*
2186  * Following options aren't printed by usage().
2187  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2188  * --latency-log - Deprecated option.
2189  */
2190 static void usage(const char *name)
2191 {
2192         printf("%s\n", fio_version_string);
2193         printf("%s [options] [job options] <job file(s)>\n", name);
2194         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2195         show_debug_categories();
2196         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2197         printf("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2198         printf("  --output\t\tWrite output to file\n");
2199         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2200         printf("  --minimal\t\tMinimal (terse) output\n");
2201         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2202         printf("  --terse-version=type\tSet terse version output format"
2203                 " (default 3, or 2 or 4)\n");
2204         printf("  --version\t\tPrint version info and exit\n");
2205         printf("  --help\t\tPrint this page\n");
2206         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2207         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2208         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2209                 " them\n");
2210         printf("  --enghelp=engine\tPrint ioengine help, or list"
2211                 " available ioengines\n");
2212         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2213                 " cmd\n");
2214         printf("  --showcmd\t\tTurn a job file into command line options\n");
2215         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2216         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2217         printf("  --eta-newline=t\tForce a new line for every 't'");
2218         printf(" period passed\n");
2219         printf("  --status-interval=t\tForce full status dump every");
2220         printf(" 't' period passed\n");
2221         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2222                 " writes\n");
2223         printf("  --section=name\tOnly run specified section in job file,"
2224                 " multiple sections can be specified\n");
2225         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2226                 " (def 16384)\n");
2227         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2228         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2229         printf("  --server=args\t\tStart a backend fio server\n");
2230         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2231         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2232         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2233         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2234                 "\t\t\t(option=system,percpu) or run unit work\n"
2235                 "\t\t\tcalibration only (option=calibrate)\n");
2236 #ifdef CONFIG_ZLIB
2237         printf("  --inflate-log=log\tInflate and output compressed log\n");
2238 #endif
2239         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2240         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2241         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2242         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2243         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2244         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2245 }
2246
2247 #ifdef FIO_INC_DEBUG
2248 const struct debug_level debug_levels[] = {
2249         { .name = "process",
2250           .help = "Process creation/exit logging",
2251           .shift = FD_PROCESS,
2252         },
2253         { .name = "file",
2254           .help = "File related action logging",
2255           .shift = FD_FILE,
2256         },
2257         { .name = "io",
2258           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2259           .shift = FD_IO,
2260         },
2261         { .name = "mem",
2262           .help = "Memory allocation/freeing logging",
2263           .shift = FD_MEM,
2264         },
2265         { .name = "blktrace",
2266           .help = "blktrace action logging",
2267           .shift = FD_BLKTRACE,
2268         },
2269         { .name = "verify",
2270           .help = "IO verification action logging",
2271           .shift = FD_VERIFY,
2272         },
2273         { .name = "random",
2274           .help = "Random generation logging",
2275           .shift = FD_RANDOM,
2276         },
2277         { .name = "parse",
2278           .help = "Parser logging",
2279           .shift = FD_PARSE,
2280         },
2281         { .name = "diskutil",
2282           .help = "Disk utility logging actions",
2283           .shift = FD_DISKUTIL,
2284         },
2285         { .name = "job",
2286           .help = "Logging related to creating/destroying jobs",
2287           .shift = FD_JOB,
2288         },
2289         { .name = "mutex",
2290           .help = "Mutex logging",
2291           .shift = FD_MUTEX
2292         },
2293         { .name = "profile",
2294           .help = "Logging related to profiles",
2295           .shift = FD_PROFILE,
2296         },
2297         { .name = "time",
2298           .help = "Logging related to time keeping functions",
2299           .shift = FD_TIME,
2300         },
2301         { .name = "net",
2302           .help = "Network logging",
2303           .shift = FD_NET,
2304         },
2305         { .name = "rate",
2306           .help = "Rate logging",
2307           .shift = FD_RATE,
2308         },
2309         { .name = "compress",
2310           .help = "Log compression logging",
2311           .shift = FD_COMPRESS,
2312         },
2313         { .name = "steadystate",
2314           .help = "Steady state detection logging",
2315           .shift = FD_STEADYSTATE,
2316         },
2317         { .name = "helperthread",
2318           .help = "Helper thread logging",
2319           .shift = FD_HELPERTHREAD,
2320         },
2321         { .name = "zbd",
2322           .help = "Zoned Block Device logging",
2323           .shift = FD_ZBD,
2324         },
2325         { .name = NULL, },
2326 };
2327
2328 static int set_debug(const char *string)
2329 {
2330         const struct debug_level *dl;
2331         char *p = (char *) string;
2332         char *opt;
2333         int i;
2334
2335         if (!string)
2336                 return 0;
2337
2338         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2339                 log_info("fio: dumping debug options:");
2340                 for (i = 0; debug_levels[i].name; i++) {
2341                         dl = &debug_levels[i];
2342                         log_info("%s,", dl->name);
2343                 }
2344                 log_info("all\n");
2345                 return 1;
2346         }
2347
2348         while ((opt = strsep(&p, ",")) != NULL) {
2349                 int found = 0;
2350
2351                 if (!strncmp(opt, "all", 3)) {
2352                         log_info("fio: set all debug options\n");
2353                         fio_debug = ~0UL;
2354                         continue;
2355                 }
2356
2357                 for (i = 0; debug_levels[i].name; i++) {
2358                         dl = &debug_levels[i];
2359                         found = !strncmp(opt, dl->name, strlen(dl->name));
2360                         if (!found)
2361                                 continue;
2362
2363                         if (dl->shift == FD_JOB) {
2364                                 opt = strchr(opt, ':');
2365                                 if (!opt) {
2366                                         log_err("fio: missing job number\n");
2367                                         break;
2368                                 }
2369                                 opt++;
2370                                 fio_debug_jobno = atoi(opt);
2371                                 log_info("fio: set debug jobno %d\n",
2372                                                         fio_debug_jobno);
2373                         } else {
2374                                 log_info("fio: set debug option %s\n", opt);
2375                                 fio_debug |= (1UL << dl->shift);
2376                         }
2377                         break;
2378                 }
2379
2380                 if (!found)
2381                         log_err("fio: debug mask %s not found\n", opt);
2382         }
2383         return 0;
2384 }
2385 #else
2386 static int set_debug(const char *string)
2387 {
2388         log_err("fio: debug tracing not included in build\n");
2389         return 1;
2390 }
2391 #endif
2392
2393 static void fio_options_fill_optstring(void)
2394 {
2395         char *ostr = cmd_optstr;
2396         int i, c;
2397
2398         c = i = 0;
2399         while (l_opts[i].name) {
2400                 ostr[c++] = l_opts[i].val;
2401                 if (l_opts[i].has_arg == required_argument)
2402                         ostr[c++] = ':';
2403                 else if (l_opts[i].has_arg == optional_argument) {
2404                         ostr[c++] = ':';
2405                         ostr[c++] = ':';
2406                 }
2407                 i++;
2408         }
2409         ostr[c] = '\0';
2410 }
2411
2412 static int client_flag_set(char c)
2413 {
2414         int i;
2415
2416         i = 0;
2417         while (l_opts[i].name) {
2418                 int val = l_opts[i].val;
2419
2420                 if (c == (val & 0xff))
2421                         return (val & FIO_CLIENT_FLAG);
2422
2423                 i++;
2424         }
2425
2426         return 0;
2427 }
2428
2429 static void parse_cmd_client(void *client, char *opt)
2430 {
2431         fio_client_add_cmd_option(client, opt);
2432 }
2433
2434 static void show_closest_option(const char *name)
2435 {
2436         int best_option, best_distance;
2437         int i, distance;
2438
2439         while (*name == '-')
2440                 name++;
2441
2442         best_option = -1;
2443         best_distance = INT_MAX;
2444         i = 0;
2445         while (l_opts[i].name) {
2446                 distance = string_distance(name, l_opts[i].name);
2447                 if (distance < best_distance) {
2448                         best_distance = distance;
2449                         best_option = i;
2450                 }
2451                 i++;
2452         }
2453
2454         if (best_option != -1 && string_distance_ok(name, best_distance))
2455                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2456 }
2457
2458 static int parse_output_format(const char *optarg)
2459 {
2460         char *p, *orig, *opt;
2461         int ret = 0;
2462
2463         p = orig = strdup(optarg);
2464
2465         output_format = 0;
2466
2467         while ((opt = strsep(&p, ",")) != NULL) {
2468                 if (!strcmp(opt, "minimal") ||
2469                     !strcmp(opt, "terse") ||
2470                     !strcmp(opt, "csv"))
2471                         output_format |= FIO_OUTPUT_TERSE;
2472                 else if (!strcmp(opt, "json"))
2473                         output_format |= FIO_OUTPUT_JSON;
2474                 else if (!strcmp(opt, "json+"))
2475                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2476                 else if (!strcmp(opt, "normal"))
2477                         output_format |= FIO_OUTPUT_NORMAL;
2478                 else {
2479                         log_err("fio: invalid output format %s\n", opt);
2480                         ret = 1;
2481                         break;
2482                 }
2483         }
2484
2485         free(orig);
2486         return ret;
2487 }
2488
2489 int parse_cmd_line(int argc, char *argv[], int client_type)
2490 {
2491         struct thread_data *td = NULL;
2492         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2493         char *ostr = cmd_optstr;
2494         char *pid_file = NULL;
2495         void *cur_client = NULL;
2496         bool backend = false;
2497
2498         /*
2499          * Reset optind handling, since we may call this multiple times
2500          * for the backend.
2501          */
2502         optind = 1;
2503
2504         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2505                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2506                         parse_cmd_client(cur_client, argv[optind - 1]);
2507                         c &= ~FIO_CLIENT_FLAG;
2508                 }
2509
2510                 switch (c) {
2511                 case 'a':
2512                         smalloc_pool_size = atoi(optarg);
2513                         smalloc_pool_size <<= 10;
2514                         sinit();
2515                         break;
2516                 case 'l':
2517                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2518                         do_exit++;
2519                         exit_val = 1;
2520                         break;
2521                 case 'b':
2522                         write_bw_log = true;
2523                         break;
2524                 case 'o': {
2525                         FILE *tmp;
2526
2527                         if (f_out && f_out != stdout)
2528                                 fclose(f_out);
2529
2530                         tmp = fopen(optarg, "w+");
2531                         if (!tmp) {
2532                                 log_err("fio: output file open error: %s\n", strerror(errno));
2533                                 exit_val = 1;
2534                                 do_exit++;
2535                                 break;
2536                         }
2537                         f_err = f_out = tmp;
2538                         break;
2539                         }
2540                 case 'm':
2541                         output_format = FIO_OUTPUT_TERSE;
2542                         break;
2543                 case 'F':
2544                         if (parse_output_format(optarg)) {
2545                                 log_err("fio: failed parsing output-format\n");
2546                                 exit_val = 1;
2547                                 do_exit++;
2548                                 break;
2549                         }
2550                         break;
2551                 case 'f':
2552                         output_format |= FIO_OUTPUT_TERSE;
2553                         break;
2554                 case 'h':
2555                         did_arg = true;
2556                         if (!cur_client) {
2557                                 usage(argv[0]);
2558                                 do_exit++;
2559                         }
2560                         break;
2561                 case 'c':
2562                         did_arg = true;
2563                         if (!cur_client) {
2564                                 fio_show_option_help(optarg);
2565                                 do_exit++;
2566                         }
2567                         break;
2568                 case 'i':
2569                         did_arg = true;
2570                         if (!cur_client) {
2571                                 exit_val = fio_show_ioengine_help(optarg);
2572                                 do_exit++;
2573                         }
2574                         break;
2575                 case 's':
2576                         did_arg = true;
2577                         dump_cmdline = true;
2578                         break;
2579                 case 'r':
2580                         read_only = 1;
2581                         break;
2582                 case 'v':
2583                         did_arg = true;
2584                         if (!cur_client) {
2585                                 log_info("%s\n", fio_version_string);
2586                                 do_exit++;
2587                         }
2588                         break;
2589                 case 'V':
2590                         terse_version = atoi(optarg);
2591                         if (!(terse_version >= 2 && terse_version <= 5)) {
2592                                 log_err("fio: bad terse version format\n");
2593                                 exit_val = 1;
2594                                 do_exit++;
2595                         }
2596                         break;
2597                 case 'e':
2598                         if (!strcmp("always", optarg))
2599                                 eta_print = FIO_ETA_ALWAYS;
2600                         else if (!strcmp("never", optarg))
2601                                 eta_print = FIO_ETA_NEVER;
2602                         break;
2603                 case 'E': {
2604                         long long t = 0;
2605
2606                         if (check_str_time(optarg, &t, 1)) {
2607                                 log_err("fio: failed parsing eta time %s\n", optarg);
2608                                 exit_val = 1;
2609                                 do_exit++;
2610                                 break;
2611                         }
2612                         eta_new_line = t / 1000;
2613                         if (!eta_new_line) {
2614                                 log_err("fio: eta new line time too short\n");
2615                                 exit_val = 1;
2616                                 do_exit++;
2617                         }
2618                         break;
2619                         }
2620                 case 'O': {
2621                         long long t = 0;
2622
2623                         if (check_str_time(optarg, &t, 1)) {
2624                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2625                                 exit_val = 1;
2626                                 do_exit++;
2627                                 break;
2628                         }
2629                         eta_interval_msec = t / 1000;
2630                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2631                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2632                                 exit_val = 1;
2633                                 do_exit++;
2634                         }
2635                         break;
2636                         }
2637                 case 'd':
2638                         if (set_debug(optarg))
2639                                 do_exit++;
2640                         break;
2641                 case 'P':
2642                         did_arg = true;
2643                         parse_only = true;
2644                         break;
2645                 case 'x': {
2646                         size_t new_size;
2647
2648                         if (!strcmp(optarg, "global")) {
2649                                 log_err("fio: can't use global as only "
2650                                         "section\n");
2651                                 do_exit++;
2652                                 exit_val = 1;
2653                                 break;
2654                         }
2655                         new_size = (nr_job_sections + 1) * sizeof(char *);
2656                         job_sections = realloc(job_sections, new_size);
2657                         job_sections[nr_job_sections] = strdup(optarg);
2658                         nr_job_sections++;
2659                         break;
2660                         }
2661 #ifdef CONFIG_ZLIB
2662                 case 'X':
2663                         exit_val = iolog_file_inflate(optarg);
2664                         did_arg = true;
2665                         do_exit++;
2666                         break;
2667 #endif
2668                 case 'p':
2669                         did_arg = true;
2670                         if (exec_profile)
2671                                 free(exec_profile);
2672                         exec_profile = strdup(optarg);
2673                         break;
2674                 case FIO_GETOPT_JOB: {
2675                         const char *opt = l_opts[lidx].name;
2676                         char *val = optarg;
2677
2678                         if (!strncmp(opt, "name", 4) && td) {
2679                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2680                                 if (ret)
2681                                         goto out_free;
2682                                 td = NULL;
2683                                 did_arg = true;
2684                         }
2685                         if (!td) {
2686                                 int is_section = !strncmp(opt, "name", 4);
2687                                 int global = 0;
2688
2689                                 if (!is_section || !strncmp(val, "global", 6))
2690                                         global = 1;
2691
2692                                 if (is_section && skip_this_section(val))
2693                                         continue;
2694
2695                                 td = get_new_job(global, &def_thread, true, NULL);
2696                                 if (!td || ioengine_load(td)) {
2697                                         if (td) {
2698                                                 put_job(td);
2699                                                 td = NULL;
2700                                         }
2701                                         do_exit++;
2702                                         exit_val = 1;
2703                                         break;
2704                                 }
2705                                 fio_options_set_ioengine_opts(l_opts, td);
2706                         }
2707
2708                         if ((!val || !strlen(val)) &&
2709                             l_opts[lidx].has_arg == required_argument) {
2710                                 log_err("fio: option %s requires an argument\n", opt);
2711                                 ret = 1;
2712                         } else
2713                                 ret = fio_cmd_option_parse(td, opt, val);
2714
2715                         if (ret) {
2716                                 if (td) {
2717                                         put_job(td);
2718                                         td = NULL;
2719                                 }
2720                                 do_exit++;
2721                                 exit_val = 1;
2722                         }
2723
2724                         if (!ret && !strcmp(opt, "ioengine")) {
2725                                 if (ioengine_load(td)) {
2726                                         put_job(td);
2727                                         td = NULL;
2728                                         do_exit++;
2729                                         exit_val = 1;
2730                                         break;
2731                                 }
2732                                 fio_options_set_ioengine_opts(l_opts, td);
2733                         }
2734                         break;
2735                 }
2736                 case FIO_GETOPT_IOENGINE: {
2737                         const char *opt = l_opts[lidx].name;
2738                         char *val = optarg;
2739
2740                         if (!td)
2741                                 break;
2742
2743                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2744                         break;
2745                 }
2746                 case 'w':
2747                         warnings_fatal = 1;
2748                         break;
2749                 case 'j':
2750                         /* we don't track/need this anymore, ignore it */
2751                         break;
2752                 case 'S':
2753                         did_arg = true;
2754 #ifndef CONFIG_NO_SHM
2755                         if (nr_clients) {
2756                                 log_err("fio: can't be both client and server\n");
2757                                 do_exit++;
2758                                 exit_val = 1;
2759                                 break;
2760                         }
2761                         if (optarg)
2762                                 fio_server_set_arg(optarg);
2763                         is_backend = true;
2764                         backend = true;
2765 #else
2766                         log_err("fio: client/server requires SHM support\n");
2767                         do_exit++;
2768                         exit_val = 1;
2769 #endif
2770                         break;
2771                 case 'D':
2772                         if (pid_file)
2773                                 free(pid_file);
2774                         pid_file = strdup(optarg);
2775                         break;
2776                 case 'I':
2777                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2778                                 /* exit on error and calibration only */
2779                                 did_arg = true;
2780                                 do_exit++;
2781                                 if (ret == -1)
2782                                         exit_val = 1;
2783                         }
2784                         break;
2785                 case 'C':
2786                         did_arg = true;
2787                         if (is_backend) {
2788                                 log_err("fio: can't be both client and server\n");
2789                                 do_exit++;
2790                                 exit_val = 1;
2791                                 break;
2792                         }
2793                         /* if --client parameter contains a pathname */
2794                         if (0 == access(optarg, R_OK)) {
2795                                 /* file contains a list of host addrs or names */
2796                                 char hostaddr[PATH_MAX] = {0};
2797                                 char formatstr[8];
2798                                 FILE * hostf = fopen(optarg, "r");
2799                                 if (!hostf) {
2800                                         log_err("fio: could not open client list file %s for read\n", optarg);
2801                                         do_exit++;
2802                                         exit_val = 1;
2803                                         break;
2804                                 }
2805                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2806                                 /*
2807                                  * read at most PATH_MAX-1 chars from each
2808                                  * record in this file
2809                                  */
2810                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2811                                         /* expect EVERY host in file to be valid */
2812                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2813                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2814                                                 do_exit++;
2815                                                 exit_val = 1;
2816                                                 break;
2817                                         }
2818                                 }
2819                                 fclose(hostf);
2820                                 break; /* no possibility of job file for "this client only" */
2821                         }
2822                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2823                                 log_err("fio: failed adding client %s\n", optarg);
2824                                 do_exit++;
2825                                 exit_val = 1;
2826                                 break;
2827                         }
2828                         /*
2829                          * If the next argument exists and isn't an option,
2830                          * assume it's a job file for this client only.
2831                          */
2832                         while (optind < argc) {
2833                                 if (!strncmp(argv[optind], "--", 2) ||
2834                                     !strncmp(argv[optind], "-", 1))
2835                                         break;
2836
2837                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2838                                         break;
2839                                 optind++;
2840                         }
2841                         break;
2842                 case 'R':
2843                         did_arg = true;
2844                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2845                                 do_exit++;
2846                                 exit_val = 1;
2847                         }
2848                         break;
2849                 case 'T':
2850                         did_arg = true;
2851                         do_exit++;
2852                         exit_val = fio_monotonic_clocktest(1);
2853                         break;
2854                 case 'G':
2855                         did_arg = true;
2856                         do_exit++;
2857                         exit_val = fio_crctest(optarg);
2858                         break;
2859                 case 'M':
2860                         did_arg = true;
2861                         do_exit++;
2862                         exit_val = fio_memcpy_test(optarg);
2863                         break;
2864                 case 'L': {
2865                         long long val;
2866
2867                         if (check_str_time(optarg, &val, 1)) {
2868                                 log_err("fio: failed parsing time %s\n", optarg);
2869                                 do_exit++;
2870                                 exit_val = 1;
2871                                 break;
2872                         }
2873                         if (val < 1000) {
2874                                 log_err("fio: status interval too small\n");
2875                                 do_exit++;
2876                                 exit_val = 1;
2877                         }
2878                         status_interval = val / 1000;
2879                         break;
2880                         }
2881                 case 'W':
2882                         if (trigger_file)
2883                                 free(trigger_file);
2884                         trigger_file = strdup(optarg);
2885                         break;
2886                 case 'H':
2887                         if (trigger_cmd)
2888                                 free(trigger_cmd);
2889                         trigger_cmd = strdup(optarg);
2890                         break;
2891                 case 'J':
2892                         if (trigger_remote_cmd)
2893                                 free(trigger_remote_cmd);
2894                         trigger_remote_cmd = strdup(optarg);
2895                         break;
2896                 case 'K':
2897                         if (aux_path)
2898                                 free(aux_path);
2899                         aux_path = strdup(optarg);
2900                         break;
2901                 case 'B':
2902                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2903                                 log_err("fio: failed parsing time %s\n", optarg);
2904                                 do_exit++;
2905                                 exit_val = 1;
2906                         }
2907                         trigger_timeout /= 1000000;
2908                         break;
2909
2910                 case 'A':
2911                         did_arg = true;
2912                         merge_blktrace_only = true;
2913                         break;
2914                 case '?':
2915                         log_err("%s: unrecognized option '%s'\n", argv[0],
2916                                                         argv[optind - 1]);
2917                         show_closest_option(argv[optind - 1]);
2918                         fallthrough;
2919                 default:
2920                         do_exit++;
2921                         exit_val = 1;
2922                         break;
2923                 }
2924                 if (do_exit)
2925                         break;
2926         }
2927
2928         if (do_exit && !(is_backend || nr_clients))
2929                 exit(exit_val);
2930
2931         if (nr_clients && fio_clients_connect())
2932                 exit(1);
2933
2934         if (is_backend && backend)
2935                 return fio_start_server(pid_file);
2936         else if (pid_file)
2937                 free(pid_file);
2938
2939         if (td) {
2940                 if (!ret) {
2941                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2942                         if (ret)
2943                                 exit(1);
2944                 }
2945         }
2946
2947         while (!ret && optind < argc) {
2948                 ini_idx++;
2949                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2950                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2951                 optind++;
2952         }
2953
2954 out_free:
2955         return ini_idx;
2956 }
2957
2958 int fio_init_options(void)
2959 {
2960         f_out = stdout;
2961         f_err = stderr;
2962
2963         fio_options_fill_optstring();
2964         fio_options_dup_and_init(l_opts);
2965
2966         atexit(free_shm);
2967
2968         if (fill_def_thread())
2969                 return 1;
2970
2971         return 0;
2972 }
2973
2974 extern int fio_check_options(struct thread_options *);
2975
2976 int parse_options(int argc, char *argv[])
2977 {
2978         const int type = FIO_CLIENT_TYPE_CLI;
2979         int job_files, i;
2980
2981         if (fio_init_options())
2982                 return 1;
2983         if (fio_test_cconv(&def_thread.o))
2984                 log_err("fio: failed internal cconv test\n");
2985
2986         job_files = parse_cmd_line(argc, argv, type);
2987
2988         if (job_files > 0) {
2989                 for (i = 0; i < job_files; i++) {
2990                         if (i && fill_def_thread())
2991                                 return 1;
2992                         if (nr_clients) {
2993                                 if (fio_clients_send_ini(ini_file[i]))
2994                                         return 1;
2995                                 free(ini_file[i]);
2996                         } else if (!is_backend) {
2997                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2998                                         return 1;
2999                                 free(ini_file[i]);
3000                         }
3001                 }
3002         } else if (nr_clients) {
3003                 if (fill_def_thread())
3004                         return 1;
3005                 if (fio_clients_send_ini(NULL))
3006                         return 1;
3007         }
3008
3009         free(ini_file);
3010         fio_options_free(&def_thread);
3011         filesetup_mem_free();
3012
3013         if (!thread_number) {
3014                 if (parse_dryrun())
3015                         return 0;
3016                 if (exec_profile)
3017                         return 0;
3018                 if (is_backend || nr_clients)
3019                         return 0;
3020                 if (did_arg)
3021                         return 0;
3022
3023                 log_err("No job(s) defined\n\n");
3024                 usage(argv[0]);
3025                 return 1;
3026         }
3027
3028         if (output_format & FIO_OUTPUT_NORMAL)
3029                 log_info("%s\n", fio_version_string);
3030
3031         return 0;
3032 }
3033
3034 void options_default_fill(struct thread_options *o)
3035 {
3036         memcpy(o, &def_thread.o, sizeof(*o));
3037 }
3038
3039 struct thread_data *get_global_options(void)
3040 {
3041         return &def_thread;
3042 }