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 fio_dump_options_free(struct thread_data *td)
 452 {
 453         while (!flist_empty(&td->opt_list)) {
 454                 struct print_option *p;
 455
 456                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 457                 flist_del_init(&p->list);
 458                 free(p->name);
 459                 free(p->value);
 460                 free(p);
 461         }
 462 }
 463
 464 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 465 {
 466         struct flist_head *entry;
 467
 468         if (flist_empty(&src->opt_list))
 469                 return;
 470
 471         flist_for_each(entry, &src->opt_list) {
 472                 struct print_option *srcp, *dstp;
 473
 474                 srcp = flist_entry(entry, struct print_option, list);
 475                 dstp = malloc(sizeof(*dstp));
 476                 dstp->name = strdup(srcp->name);
 477                 if (srcp->value)
 478                         dstp->value = strdup(srcp->value);
 479                 else
 480                         dstp->value = NULL;
 481                 flist_add_tail(&dstp->list, &dst->opt_list);
 482         }
 483 }
 484
 485 /*
 486  * Return a free job structure.
 487  */
 488 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 489                                        bool preserve_eo, const char *jobname)
 490 {
 491         struct thread_segment *seg;
 492         struct thread_data *td;
 493
 494         if (global)
 495                 return &def_thread;
 496         if (expand_thread_area()) {
 497                 log_err("error: failed to setup shm segment\n");
 498                 return NULL;
 499         }
 500
 501         seg = &segments[cur_segment];
 502         td = &seg->threads[seg->nr_threads++];
 503         thread_number++;
 504         *td = *parent;
 505
 506         INIT_FLIST_HEAD(&td->opt_list);
 507         if (parent != &def_thread)
 508                 copy_opt_list(td, parent);
 509
 510         td->io_ops = NULL;
 511         td->io_ops_init = 0;
 512         if (!preserve_eo)
 513                 td->eo = NULL;
 514
 515         td->o.uid = td->o.gid = -1U;
 516
 517         dup_files(td, parent);
 518         fio_options_mem_dupe(td);
 519
 520         profile_add_hooks(td);
 521
 522         td->thread_number = thread_number;
 523         td->subjob_number = 0;
 524
 525         if (jobname)
 526                 td->o.name = strdup(jobname);
 527
 528         if (!parent->o.group_reporting || parent == &def_thread)
 529                 stat_number++;
 530
 531         return td;
 532 }
 533
 534 static void put_job(struct thread_data *td)
 535 {
 536         if (td == &def_thread)
 537                 return;
 538
 539         profile_td_exit(td);
 540         flow_exit_job(td);
 541
 542         if (td->error)
 543                 log_info("fio: %s\n", td->verror);
 544
 545         fio_options_free(td);
 546         fio_dump_options_free(td);
 547         if (td->io_ops)
 548                 free_ioengine(td);
 549
 550         if (td->o.name)
 551                 free(td->o.name);
 552
 553         memset(td, 0, sizeof(*td));
 554         segments[cur_segment].nr_threads--;
 555         thread_number--;
 556 }
 557
 558 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 559 {
 560         unsigned long long bs = td->o.min_bs[ddir];
 561
 562         assert(ddir_rw(ddir));
 563
 564         if (td->o.rate[ddir])
 565                 td->rate_bps[ddir] = td->o.rate[ddir];
 566         else
 567                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 568
 569         if (!td->rate_bps[ddir]) {
 570                 log_err("rate lower than supported\n");
 571                 return -1;
 572         }
 573
 574         td->rate_next_io_time[ddir] = 0;
 575         td->rate_io_issue_bytes[ddir] = 0;
 576         td->last_usec[ddir] = 0;
 577         return 0;
 578 }
 579
 580 static int setup_rate(struct thread_data *td)
 581 {
 582         int ret = 0;
 583
 584         for_each_rw_ddir(ddir) {
 585                 if (td->o.rate[ddir] || td->o.rate_iops[ddir]) {
 586                         ret |= __setup_rate(td, ddir);
 587                 }
 588         }
 589         return ret;
 590 }
 591
 592 static int fixed_block_size(struct thread_options *o)
 593 {
 594         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 595                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 596                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 597                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 598                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 599 }
 600
 601 /*
 602  * <3 Johannes
 603  */
 604 static unsigned int gcd(unsigned int m, unsigned int n)
 605 {
 606         if (!n)
 607                 return m;
 608
 609         return gcd(n, m % n);
 610 }
 611
 612 /*
 613  * Lazy way of fixing up options that depend on each other. We could also
 614  * define option callback handlers, but this is easier.
 615  */
 616 static int fixup_options(struct thread_data *td)
 617 {
 618         struct thread_options *o = &td->o;
 619         int ret = 0;
 620
 621         if (read_only && (td_write(td) || td_trim(td))) {
 622                 log_err("fio: trim and write operations are not allowed"
 623                          " with the --readonly parameter.\n");
 624                 ret |= 1;
 625         }
 626
 627 #ifndef CONFIG_PSHARED
 628         if (!o->use_thread) {
 629                 log_info("fio: this platform does not support process shared"
 630                          " mutexes, forcing use of threads. Use the 'thread'"
 631                          " option to get rid of this warning.\n");
 632                 o->use_thread = 1;
 633                 ret |= warnings_fatal;
 634         }
 635 #endif
 636
 637         if (o->write_iolog_file && o->read_iolog_file) {
 638                 log_err("fio: read iolog overrides write_iolog\n");
 639                 free(o->write_iolog_file);
 640                 o->write_iolog_file = NULL;
 641                 ret |= warnings_fatal;
 642         }
 643
 644         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
 645                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
 646                 ret |= 1;
 647         }
 648
 649         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
 650                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
 651                 ret |= 1;
 652         }
 653
 654         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
 655                 if (o->zone_size)
 656                         o->zone_mode = ZONE_MODE_STRIDED;
 657                 else
 658                         o->zone_mode = ZONE_MODE_NONE;
 659         }
 660
 661         /*
 662          * Strided zone mode only really works with 1 file.
 663          */
 664         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
 665                 o->zone_mode = ZONE_MODE_NONE;
 666
 667         /*
 668          * If zone_range isn't specified, backward compatibility dictates it
 669          * should be made equal to zone_size.
 670          */
 671         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
 672                 o->zone_range = o->zone_size;
 673
 674         /*
 675          * Reads can do overwrites, we always need to pre-create the file
 676          */
 677         if (td_read(td))
 678                 o->overwrite = 1;
 679
 680         for_each_rw_ddir(ddir) {
 681                 if (!o->min_bs[ddir])
 682                         o->min_bs[ddir] = o->bs[ddir];
 683                 if (!o->max_bs[ddir])
 684                         o->max_bs[ddir] = o->bs[ddir];
 685         }
 686
 687         o->rw_min_bs = -1;
 688         for_each_rw_ddir(ddir) {
 689                 o->rw_min_bs = min(o->rw_min_bs, o->min_bs[ddir]);
 690         }
 691
 692         /*
 693          * For random IO, allow blockalign offset other than min_bs.
 694          */
 695         for_each_rw_ddir(ddir) {
 696                 if (!o->ba[ddir] || !td_random(td))
 697                         o->ba[ddir] = o->min_bs[ddir];
 698         }
 699
 700         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 701             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 702             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 703             !o->norandommap) {
 704                 log_err("fio: Any use of blockalign= turns off randommap\n");
 705                 o->norandommap = 1;
 706                 ret |= warnings_fatal;
 707         }
 708
 709         if (!o->file_size_high)
 710                 o->file_size_high = o->file_size_low;
 711
 712         if (o->start_delay_high) {
 713                 if (!o->start_delay_orig)
 714                         o->start_delay_orig = o->start_delay;
 715                 o->start_delay = rand_between(&td->delay_state,
 716                                                 o->start_delay_orig,
 717                                                 o->start_delay_high);
 718         }
 719
 720         if (o->norandommap && o->verify != VERIFY_NONE
 721             && !fixed_block_size(o))  {
 722                 log_err("fio: norandommap given for variable block sizes, "
 723                         "verify limited\n");
 724                 ret |= warnings_fatal;
 725         }
 726         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 727                 log_err("fio: bs_unaligned may not work with raw io\n");
 728
 729         /*
 730          * thinktime_spin must be less than thinktime
 731          */
 732         if (o->thinktime_spin > o->thinktime)
 733                 o->thinktime_spin = o->thinktime;
 734
 735         /*
 736          * The low water mark cannot be bigger than the iodepth
 737          */
 738         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 739                 o->iodepth_low = o->iodepth;
 740
 741         /*
 742          * If batch number isn't set, default to the same as iodepth
 743          */
 744         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 745                 o->iodepth_batch = o->iodepth;
 746
 747         /*
 748          * If max batch complete number isn't set or set incorrectly,
 749          * default to the same as iodepth_batch_complete_min
 750          */
 751         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 752                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 753
 754         /*
 755          * There's no need to check for in-flight overlapping IOs if the job
 756          * isn't changing data or the maximum iodepth is guaranteed to be 1
 757          * when we are not in offload mode
 758          */
 759         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 760             (!(td_write(td) || td_trim(td)) || o->iodepth == 1) &&
 761             o->io_submit_mode != IO_MODE_OFFLOAD)
 762                 o->serialize_overlap = 0;
 763
 764         if (o->nr_files > td->files_index)
 765                 o->nr_files = td->files_index;
 766
 767         if (o->open_files > o->nr_files || !o->open_files)
 768                 o->open_files = o->nr_files;
 769
 770         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 771             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 772             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 773             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 774                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 775                 ret |= 1;
 776         }
 777         for_each_rw_ddir(ddir) {
 778                 if ((o->rate[ddir] && (o->rate[ddir] < o->ratemin[ddir])) ||
 779                     (o->rate_iops[ddir] && (o->rate_iops[ddir] < o->rate_iops_min[ddir]))) {
 780                         log_err("fio: minimum rate exceeds rate, ddir %d\n", +ddir);
 781                         ret |= 1;
 782                 }
 783         }
 784
 785         if (!o->timeout && o->time_based) {
 786                 log_err("fio: time_based requires a runtime/timeout setting\n");
 787                 o->time_based = 0;
 788                 ret |= warnings_fatal;
 789         }
 790
 791         if (o->fill_device && !o->size)
 792                 o->size = -1ULL;
 793
 794         if (o->verify != VERIFY_NONE) {
 795                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 796                     (o->filename ||
 797                      !(o->unique_filename &&
 798                        strstr(o->filename_format, "$jobname") &&
 799                        strstr(o->filename_format, "$jobnum") &&
 800                        strstr(o->filename_format, "$filenum")))) {
 801                         log_info("fio: multiple writers may overwrite blocks "
 802                                 "that belong to other jobs. This can cause "
 803                                 "verification failures.\n");
 804                         ret |= warnings_fatal;
 805                 }
 806
 807                 /*
 808                  * Warn if verification is requested but no verification of any
 809                  * kind can be started due to time constraints
 810                  */
 811                 if (td_write(td) && o->do_verify && o->timeout &&
 812                     o->time_based && !td_read(td) && !o->verify_backlog) {
 813                         log_info("fio: verification read phase will never "
 814                                  "start because write phase uses all of "
 815                                  "runtime\n");
 816                         ret |= warnings_fatal;
 817                 }
 818
 819                 if (!fio_option_is_set(o, refill_buffers))
 820                         o->refill_buffers = 1;
 821
 822                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 823                     !o->verify_interval)
 824                         o->verify_interval = o->min_bs[DDIR_WRITE];
 825
 826                 /*
 827                  * Verify interval must be smaller or equal to the
 828                  * write size.
 829                  */
 830                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 831                         o->verify_interval = o->min_bs[DDIR_WRITE];
 832                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 833                         o->verify_interval = o->min_bs[DDIR_READ];
 834
 835                 /*
 836                  * Verify interval must be a factor of both min and max
 837                  * write size
 838                  */
 839                 if (!o->verify_interval ||
 840                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 841                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 842                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 843                                                         o->max_bs[DDIR_WRITE]);
 844         }
 845
 846         if (o->pre_read) {
 847                 if (o->invalidate_cache)
 848                         o->invalidate_cache = 0;
 849                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 850                         log_info("fio: cannot pre-read files with an IO engine"
 851                                  " that isn't seekable. Pre-read disabled.\n");
 852                         ret |= warnings_fatal;
 853                 }
 854         }
 855
 856         if (o->unit_base == N2S_NONE) {
 857                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 858                         o->unit_base = N2S_BITPERSEC;
 859                 else
 860                         o->unit_base = N2S_BYTEPERSEC;
 861         }
 862
 863 #ifndef CONFIG_FDATASYNC
 864         if (o->fdatasync_blocks) {
 865                 log_info("fio: this platform does not support fdatasync()"
 866                          " falling back to using fsync().  Use the 'fsync'"
 867                          " option instead of 'fdatasync' to get rid of"
 868                          " this warning\n");
 869                 o->fsync_blocks = o->fdatasync_blocks;
 870                 o->fdatasync_blocks = 0;
 871                 ret |= warnings_fatal;
 872         }
 873 #endif
 874
 875 #ifdef WIN32
 876         /*
 877          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 878          * so fail if we're passed those flags
 879          */
 880         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 881                 log_err("fio: Windows does not support direct or non-buffered io with"
 882                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 883                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 884                 ret |= 1;
 885         }
 886 #endif
 887
 888         /*
 889          * For fully compressible data, just zero them at init time.
 890          * It's faster than repeatedly filling it. For non-zero
 891          * compression, we should have refill_buffers set. Set it, unless
 892          * the job file already changed it.
 893          */
 894         if (o->compress_percentage) {
 895                 if (o->compress_percentage == 100) {
 896                         o->zero_buffers = 1;
 897                         o->compress_percentage = 0;
 898                 } else if (!fio_option_is_set(o, refill_buffers)) {
 899                         o->refill_buffers = 1;
 900                         td->flags |= TD_F_REFILL_BUFFERS;
 901                 }
 902         }
 903
 904         /*
 905          * Using a non-uniform random distribution excludes usage of
 906          * a random map
 907          */
 908         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 909                 o->norandommap = 1;
 910
 911         /*
 912          * If size is set but less than the min block size, complain
 913          */
 914         if (o->size && o->size < td_min_bs(td)) {
 915                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 916                         (unsigned long long) o->size, td_min_bs(td));
 917                 ret |= 1;
 918         }
 919
 920         /*
 921          * O_ATOMIC implies O_DIRECT
 922          */
 923         if (o->oatomic)
 924                 o->odirect = 1;
 925
 926         /*
 927          * If randseed is set, that overrides randrepeat
 928          */
 929         if (fio_option_is_set(o, rand_seed))
 930                 o->rand_repeatable = 0;
 931
 932         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 933                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 934                 ret |= 1;
 935         }
 936
 937         if (fio_option_is_set(o, gtod_cpu)) {
 938                 fio_gtod_init();
 939                 fio_gtod_set_cpu(o->gtod_cpu);
 940                 fio_gtod_offload = 1;
 941         }
 942
 943         td->loops = o->loops;
 944         if (!td->loops)
 945                 td->loops = 1;
 946
 947         if (o->block_error_hist && o->nr_files != 1) {
 948                 log_err("fio: block error histogram only available "
 949                         "with a single file per job, but %d files "
 950                         "provided\n", o->nr_files);
 951                 ret |= 1;
 952         }
 953
 954         if (o->disable_lat)
 955                 o->lat_percentiles = 0;
 956         if (o->disable_clat)
 957                 o->clat_percentiles = 0;
 958         if (o->disable_slat)
 959                 o->slat_percentiles = 0;
 960
 961         /*
 962          * Fix these up to be nsec internally
 963          */
 964         for_each_rw_ddir(ddir)
 965                 o->max_latency[ddir] *= 1000ULL;
 966
 967         o->latency_target *= 1000ULL;
 968
 969         return ret;
 970 }
 971
 972 static void init_rand_file_service(struct thread_data *td)
 973 {
 974         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 975         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 976
 977         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 978                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, td->random_center, seed);
 979                 zipf_disable_hash(&td->next_file_zipf);
 980         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 981                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, td->random_center, seed);
 982                 zipf_disable_hash(&td->next_file_zipf);
 983         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 984                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, td->random_center, seed);
 985                 gauss_disable_hash(&td->next_file_gauss);
 986         }
 987 }
 988
 989 void td_fill_verify_state_seed(struct thread_data *td)
 990 {
 991         bool use64;
 992
 993         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 994                 use64 = true;
 995         else
 996                 use64 = false;
 997
 998         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
 999                 use64);
1000 }
1001
1002 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
1003 {
1004         uint64_t read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
1005         uint64_t write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
1006         uint64_t trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
1007         int i;
1008
1009         /*
1010          * trimwrite is special in that we need to generate the same
1011          * offsets to get the "write after trim" effect. If we are
1012          * using bssplit to set buffer length distributions, ensure that
1013          * we seed the trim and write generators identically. Ditto for
1014          * verify, read and writes must have the same seed, if we are doing
1015          * read verify.
1016          */
1017         if (td->o.verify != VERIFY_NONE)
1018                 write_seed = read_seed;
1019         if (td_trimwrite(td))
1020                 trim_seed = write_seed;
1021         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1022         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1023         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1024
1025         td_fill_verify_state_seed(td);
1026         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1027
1028         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1029                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1030         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1031                 init_rand_file_service(td);
1032
1033         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1034         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1035         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1036         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1037         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1038         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1039         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1040         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1041         init_rand_seed(&td->prio_state, td->rand_seeds[FIO_RAND_PRIO_CMDS], false);
1042
1043         if (!td_random(td))
1044                 return;
1045
1046         if (td->o.rand_repeatable)
1047                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1048
1049         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1050
1051         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1052                 struct frand_state *s = &td->seq_rand_state[i];
1053
1054                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1055         }
1056 }
1057
1058 void td_fill_rand_seeds(struct thread_data *td)
1059 {
1060         bool use64;
1061
1062         if (td->o.allrand_repeatable) {
1063                 unsigned int i;
1064
1065                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1066                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1067                                 + i;
1068         }
1069
1070         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1071                 use64 = true;
1072         else
1073                 use64 = false;
1074
1075         td_fill_rand_seeds_internal(td, use64);
1076
1077         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1078         frand_copy(&td->buf_state_prev, &td->buf_state);
1079 }
1080
1081 /*
1082  * Initializes the ioengine configured for a job, if it has not been done so
1083  * already.
1084  */
1085 int ioengine_load(struct thread_data *td)
1086 {
1087         if (!td->o.ioengine) {
1088                 log_err("fio: internal fault, no IO engine specified\n");
1089                 return 1;
1090         }
1091
1092         if (td->io_ops) {
1093                 struct ioengine_ops *ops;
1094                 void *dlhandle;
1095
1096                 /* An engine is loaded, but the requested ioengine
1097                  * may have changed.
1098                  */
1099                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1100                         /* The right engine is already loaded */
1101                         return 0;
1102                 }
1103
1104                 /*
1105                  * Name of file and engine may be different, load ops
1106                  * for this name and see if they match. If they do, then
1107                  * the engine is unchanged.
1108                  */
1109                 dlhandle = td->io_ops->dlhandle;
1110                 ops = load_ioengine(td);
1111                 if (!ops)
1112                         goto fail;
1113
1114                 if (ops == td->io_ops && dlhandle == td->io_ops->dlhandle)
1115                         return 0;
1116
1117                 if (dlhandle && dlhandle != td->io_ops->dlhandle)
1118                         dlclose(dlhandle);
1119
1120                 /* Unload the old engine. */
1121                 free_ioengine(td);
1122         }
1123
1124         td->io_ops = load_ioengine(td);
1125         if (!td->io_ops)
1126                 goto fail;
1127
1128         if (td->io_ops->option_struct_size && td->io_ops->options) {
1129                 /*
1130                  * In cases where td->eo is set, clone it for a child thread.
1131                  * This requires that the parent thread has the same ioengine,
1132                  * but that requirement must be enforced by the code which
1133                  * cloned the thread.
1134                  */
1135                 void *origeo = td->eo;
1136                 /*
1137                  * Otherwise use the default thread options.
1138                  */
1139                 if (!origeo && td != &def_thread && def_thread.eo &&
1140                     def_thread.io_ops->options == td->io_ops->options)
1141                         origeo = def_thread.eo;
1142
1143                 options_init(td->io_ops->options);
1144                 td->eo = malloc(td->io_ops->option_struct_size);
1145                 /*
1146                  * Use the default thread as an option template if this uses the
1147                  * same options structure and there are non-default options
1148                  * used.
1149                  */
1150                 if (origeo) {
1151                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1152                         options_mem_dupe(td->io_ops->options, td->eo);
1153                 } else {
1154                         memset(td->eo, 0, td->io_ops->option_struct_size);
1155                         fill_default_options(td->eo, td->io_ops->options);
1156                 }
1157                 *(struct thread_data **)td->eo = td;
1158         }
1159
1160         if (td->o.odirect)
1161                 td->io_ops->flags |= FIO_RAWIO;
1162
1163         td_set_ioengine_flags(td);
1164         return 0;
1165
1166 fail:
1167         log_err("fio: failed to load engine\n");
1168         return 1;
1169
1170 }
1171
1172 static void init_flags(struct thread_data *td)
1173 {
1174         struct thread_options *o = &td->o;
1175         int i;
1176
1177         if (o->verify_backlog)
1178                 td->flags |= TD_F_VER_BACKLOG;
1179         if (o->trim_backlog)
1180                 td->flags |= TD_F_TRIM_BACKLOG;
1181         if (o->read_iolog_file)
1182                 td->flags |= TD_F_READ_IOLOG;
1183         if (o->refill_buffers)
1184                 td->flags |= TD_F_REFILL_BUFFERS;
1185         /*
1186          * Always scramble buffers if asked to
1187          */
1188         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1189                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1190         /*
1191          * But also scramble buffers, unless we were explicitly asked
1192          * to zero them.
1193          */
1194         if (o->scramble_buffers && !(o->zero_buffers &&
1195             fio_option_is_set(o, zero_buffers)))
1196                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1197         if (o->verify != VERIFY_NONE)
1198                 td->flags |= TD_F_DO_VERIFY;
1199
1200         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1201                 td->flags |= TD_F_NEED_LOCK;
1202
1203         if (o->mem_type == MEM_CUDA_MALLOC)
1204                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1205
1206         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1207                 if (option_check_rate(td, i)) {
1208                         td->flags |= TD_F_CHECK_RATE;
1209                         break;
1210                 }
1211         }
1212 }
1213
1214 static int setup_random_seeds(struct thread_data *td)
1215 {
1216         uint64_t seed;
1217         unsigned int i;
1218
1219         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1220                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1221                 if (!ret)
1222                         td_fill_rand_seeds(td);
1223                 return ret;
1224         }
1225
1226         seed = td->o.rand_seed;
1227         for (i = 0; i < 4; i++)
1228                 seed *= 0x9e370001UL;
1229
1230         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1231                 td->rand_seeds[i] = seed * td->thread_number + i;
1232                 seed *= 0x9e370001UL;
1233         }
1234
1235         td_fill_rand_seeds(td);
1236         return 0;
1237 }
1238
1239 enum {
1240         FPRE_NONE = 0,
1241         FPRE_JOBNAME,
1242         FPRE_JOBNUM,
1243         FPRE_FILENUM,
1244         FPRE_CLIENTUID
1245 };
1246
1247 static struct fpre_keyword {
1248         const char *keyword;
1249         size_t strlen;
1250         int key;
1251 } fpre_keywords[] = {
1252         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1253         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1254         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1255         { .keyword = "$clientuid",      .key = FPRE_CLIENTUID, },
1256         { .keyword = NULL, },
1257         };
1258
1259 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1260                            const char *jobname, int jobnum, int filenum)
1261 {
1262         struct fpre_keyword *f;
1263         char copy[PATH_MAX];
1264         size_t dst_left = PATH_MAX - 1;
1265
1266         if (!o->filename_format || !strlen(o->filename_format)) {
1267                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1268                 return buf;
1269         }
1270
1271         for (f = &fpre_keywords[0]; f->keyword; f++)
1272                 f->strlen = strlen(f->keyword);
1273
1274         snprintf(buf, buf_size, "%s", o->filename_format);
1275
1276         memset(copy, 0, sizeof(copy));
1277         for (f = &fpre_keywords[0]; f->keyword; f++) {
1278                 do {
1279                         size_t pre_len, post_start = 0;
1280                         char *str, *dst = copy;
1281
1282                         str = strcasestr(buf, f->keyword);
1283                         if (!str)
1284                                 break;
1285
1286                         pre_len = str - buf;
1287                         if (strlen(str) != f->strlen)
1288                                 post_start = pre_len + f->strlen;
1289
1290                         if (pre_len) {
1291                                 strncpy(dst, buf, pre_len);
1292                                 dst += pre_len;
1293                                 dst_left -= pre_len;
1294                         }
1295
1296                         switch (f->key) {
1297                         case FPRE_JOBNAME: {
1298                                 int ret;
1299
1300                                 ret = snprintf(dst, dst_left, "%s", jobname);
1301                                 if (ret < 0)
1302                                         break;
1303                                 else if (ret > dst_left) {
1304                                         log_err("fio: truncated filename\n");
1305                                         dst += dst_left;
1306                                         dst_left = 0;
1307                                 } else {
1308                                         dst += ret;
1309                                         dst_left -= ret;
1310                                 }
1311                                 break;
1312                                 }
1313                         case FPRE_JOBNUM: {
1314                                 int ret;
1315
1316                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1317                                 if (ret < 0)
1318                                         break;
1319                                 else if (ret > dst_left) {
1320                                         log_err("fio: truncated filename\n");
1321                                         dst += dst_left;
1322                                         dst_left = 0;
1323                                 } else {
1324                                         dst += ret;
1325                                         dst_left -= ret;
1326                                 }
1327                                 break;
1328                                 }
1329                         case FPRE_FILENUM: {
1330                                 int ret;
1331
1332                                 ret = snprintf(dst, dst_left, "%d", filenum);
1333                                 if (ret < 0)
1334                                         break;
1335                                 else if (ret > dst_left) {
1336                                         log_err("fio: truncated filename\n");
1337                                         dst += dst_left;
1338                                         dst_left = 0;
1339                                 } else {
1340                                         dst += ret;
1341                                         dst_left -= ret;
1342                                 }
1343                                 break;
1344                                 }
1345                         case FPRE_CLIENTUID: {
1346                                 int ret;
1347                                 ret = snprintf(dst, dst_left, "%s", client_sockaddr_str);
1348                                 if (ret < 0)
1349                                         break;
1350                                 else if (ret > dst_left) {
1351                                         log_err("fio: truncated filename\n");
1352                                         dst += dst_left;
1353                                         dst_left = 0;
1354                                 } else {
1355                                         dst += ret;
1356                                         dst_left -= ret;
1357                                 }
1358                                 break;
1359                                 }
1360                         default:
1361                                 assert(0);
1362                                 break;
1363                         }
1364
1365                         if (post_start)
1366                                 strncpy(dst, buf + post_start, dst_left);
1367
1368                         snprintf(buf, buf_size, "%s", copy);
1369                 } while (1);
1370         }
1371
1372         return buf;
1373 }
1374
1375 bool parse_dryrun(void)
1376 {
1377         return dump_cmdline || parse_only;
1378 }
1379
1380 static void gen_log_name(char *name, size_t size, const char *logtype,
1381                          const char *logname, unsigned int num,
1382                          const char *suf, int per_job)
1383 {
1384         if (per_job)
1385                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1386         else
1387                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1388 }
1389
1390 static int check_waitees(char *waitee)
1391 {
1392         struct thread_data *td;
1393         int i, ret = 0;
1394
1395         for_each_td(td, i) {
1396                 if (td->subjob_number)
1397                         continue;
1398
1399                 ret += !strcmp(td->o.name, waitee);
1400         }
1401
1402         return ret;
1403 }
1404
1405 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1406 {
1407         int nw;
1408
1409         if (!o->wait_for)
1410                 return true;
1411
1412         if (!strcmp(jobname, o->wait_for)) {
1413                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1414                                 jobname, o->wait_for);
1415                 return false;
1416         }
1417
1418         if (!(nw = check_waitees(o->wait_for))) {
1419                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1420                 return false;
1421         }
1422
1423         if (nw > 1) {
1424                 log_err("%s: multiple waitees %s found,\n"
1425                         "please avoid duplicates when using wait_for option.\n",
1426                                 jobname, o->wait_for);
1427                 return false;
1428         }
1429
1430         return true;
1431 }
1432
1433 /*
1434  * Treat an empty log file name the same as a one not given
1435  */
1436 static const char *make_log_name(const char *logname, const char *jobname)
1437 {
1438         if (logname && strcmp(logname, ""))
1439                 return logname;
1440
1441         return jobname;
1442 }
1443
1444 /*
1445  * Adds a job to the list of things todo. Sanitizes the various options
1446  * to make sure we don't have conflicts, and initializes various
1447  * members of td.
1448  */
1449 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1450                    int recursed, int client_type)
1451 {
1452         unsigned int i;
1453         char fname[PATH_MAX + 1];
1454         int numjobs, file_alloced;
1455         struct thread_options *o = &td->o;
1456         char logname[PATH_MAX + 32];
1457
1458         /*
1459          * the def_thread is just for options, it's not a real job
1460          */
1461         if (td == &def_thread)
1462                 return 0;
1463
1464         init_flags(td);
1465
1466         /*
1467          * if we are just dumping the output command line, don't add the job
1468          */
1469         if (parse_dryrun()) {
1470                 put_job(td);
1471                 return 0;
1472         }
1473
1474         td->client_type = client_type;
1475
1476         if (profile_td_init(td))
1477                 goto err;
1478
1479         if (ioengine_load(td))
1480                 goto err;
1481
1482         file_alloced = 0;
1483         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1484                 file_alloced = 1;
1485
1486                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1487                         add_file(td, jobname, job_add_num, 0);
1488                 else {
1489                         for (i = 0; i < o->nr_files; i++)
1490                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1491                 }
1492         }
1493
1494         if (setup_random_seeds(td)) {
1495                 td_verror(td, errno, "setup_random_seeds");
1496                 goto err;
1497         }
1498
1499         if (fixup_options(td))
1500                 goto err;
1501
1502         /*
1503          * Belongs to fixup_options, but o->name is not necessarily set as yet
1504          */
1505         if (!wait_for_ok(jobname, o))
1506                 goto err;
1507
1508         flow_init_job(td);
1509
1510         /*
1511          * IO engines only need this for option callbacks, and the address may
1512          * change in subprocesses.
1513          */
1514         if (td->eo)
1515                 *(struct thread_data **)td->eo = NULL;
1516
1517         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1518                 struct fio_file *f;
1519
1520                 for_each_file(td, f, i)
1521                         f->real_file_size = -1ULL;
1522         }
1523
1524         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1525
1526         td->ts.clat_percentiles = o->clat_percentiles;
1527         td->ts.lat_percentiles = o->lat_percentiles;
1528         td->ts.slat_percentiles = o->slat_percentiles;
1529         td->ts.percentile_precision = o->percentile_precision;
1530         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1531         td->ts.sig_figs = o->sig_figs;
1532
1533         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1534                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1535                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1536                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1537                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1538                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1539                 td->ts.clat_high_prio_stat[i].min_val = ULONG_MAX;
1540                 td->ts.clat_low_prio_stat[i].min_val = ULONG_MAX;
1541         }
1542         td->ts.sync_stat.min_val = ULONG_MAX;
1543         td->ddir_seq_nr = o->ddir_seq_nr;
1544
1545         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1546                 prev_group_jobs = 0;
1547                 groupid++;
1548                 if (groupid == INT_MAX) {
1549                         log_err("fio: too many groups defined\n");
1550                         goto err;
1551                 }
1552         }
1553
1554         td->groupid = groupid;
1555         prev_group_jobs++;
1556
1557         if (setup_rate(td))
1558                 goto err;
1559
1560         if (o->write_lat_log) {
1561                 struct log_params p = {
1562                         .td = td,
1563                         .avg_msec = o->log_avg_msec,
1564                         .hist_msec = o->log_hist_msec,
1565                         .hist_coarseness = o->log_hist_coarseness,
1566                         .log_type = IO_LOG_TYPE_LAT,
1567                         .log_offset = o->log_offset,
1568                         .log_gz = o->log_gz,
1569                         .log_gz_store = o->log_gz_store,
1570                 };
1571                 const char *pre = make_log_name(o->lat_log_file, o->name);
1572                 const char *suf;
1573
1574                 if (p.log_gz_store)
1575                         suf = "log.fz";
1576                 else
1577                         suf = "log";
1578
1579                 gen_log_name(logname, sizeof(logname), "lat", pre,
1580                                 td->thread_number, suf, o->per_job_logs);
1581                 setup_log(&td->lat_log, &p, logname);
1582
1583                 gen_log_name(logname, sizeof(logname), "slat", pre,
1584                                 td->thread_number, suf, o->per_job_logs);
1585                 setup_log(&td->slat_log, &p, logname);
1586
1587                 gen_log_name(logname, sizeof(logname), "clat", pre,
1588                                 td->thread_number, suf, o->per_job_logs);
1589                 setup_log(&td->clat_log, &p, logname);
1590
1591         }
1592
1593         if (o->write_hist_log) {
1594                 struct log_params p = {
1595                         .td = td,
1596                         .avg_msec = o->log_avg_msec,
1597                         .hist_msec = o->log_hist_msec,
1598                         .hist_coarseness = o->log_hist_coarseness,
1599                         .log_type = IO_LOG_TYPE_HIST,
1600                         .log_offset = o->log_offset,
1601                         .log_gz = o->log_gz,
1602                         .log_gz_store = o->log_gz_store,
1603                 };
1604                 const char *pre = make_log_name(o->hist_log_file, o->name);
1605                 const char *suf;
1606
1607 #ifndef CONFIG_ZLIB
1608                 if (td->client_type) {
1609                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1610                         goto err;
1611                 }
1612 #endif
1613
1614                 if (p.log_gz_store)
1615                         suf = "log.fz";
1616                 else
1617                         suf = "log";
1618
1619                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1620                                 td->thread_number, suf, o->per_job_logs);
1621                 setup_log(&td->clat_hist_log, &p, logname);
1622         }
1623
1624         if (o->write_bw_log) {
1625                 struct log_params p = {
1626                         .td = td,
1627                         .avg_msec = o->log_avg_msec,
1628                         .hist_msec = o->log_hist_msec,
1629                         .hist_coarseness = o->log_hist_coarseness,
1630                         .log_type = IO_LOG_TYPE_BW,
1631                         .log_offset = o->log_offset,
1632                         .log_gz = o->log_gz,
1633                         .log_gz_store = o->log_gz_store,
1634                 };
1635                 const char *pre = make_log_name(o->bw_log_file, o->name);
1636                 const char *suf;
1637
1638                 if (fio_option_is_set(o, bw_avg_time))
1639                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1640                 else
1641                         o->bw_avg_time = p.avg_msec;
1642
1643                 p.hist_msec = o->log_hist_msec;
1644                 p.hist_coarseness = o->log_hist_coarseness;
1645
1646                 if (p.log_gz_store)
1647                         suf = "log.fz";
1648                 else
1649                         suf = "log";
1650
1651                 gen_log_name(logname, sizeof(logname), "bw", pre,
1652                                 td->thread_number, suf, o->per_job_logs);
1653                 setup_log(&td->bw_log, &p, logname);
1654         }
1655         if (o->write_iops_log) {
1656                 struct log_params p = {
1657                         .td = td,
1658                         .avg_msec = o->log_avg_msec,
1659                         .hist_msec = o->log_hist_msec,
1660                         .hist_coarseness = o->log_hist_coarseness,
1661                         .log_type = IO_LOG_TYPE_IOPS,
1662                         .log_offset = o->log_offset,
1663                         .log_gz = o->log_gz,
1664                         .log_gz_store = o->log_gz_store,
1665                 };
1666                 const char *pre = make_log_name(o->iops_log_file, o->name);
1667                 const char *suf;
1668
1669                 if (fio_option_is_set(o, iops_avg_time))
1670                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1671                 else
1672                         o->iops_avg_time = p.avg_msec;
1673
1674                 p.hist_msec = o->log_hist_msec;
1675                 p.hist_coarseness = o->log_hist_coarseness;
1676
1677                 if (p.log_gz_store)
1678                         suf = "log.fz";
1679                 else
1680                         suf = "log";
1681
1682                 gen_log_name(logname, sizeof(logname), "iops", pre,
1683                                 td->thread_number, suf, o->per_job_logs);
1684                 setup_log(&td->iops_log, &p, logname);
1685         }
1686
1687         if (!o->name)
1688                 o->name = strdup(jobname);
1689
1690         if (output_format & FIO_OUTPUT_NORMAL) {
1691                 if (!job_add_num) {
1692                         if (is_backend && !recursed)
1693                                 fio_server_send_add_job(td);
1694
1695                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1696                                 char *c1, *c2, *c3, *c4;
1697                                 char *c5 = NULL, *c6 = NULL;
1698                                 int i2p = is_power_of_2(o->kb_base);
1699                                 struct buf_output out;
1700
1701                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1702                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1703                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1704                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1705
1706                                 if (!o->bs_is_seq_rand) {
1707                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1708                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1709                                 }
1710
1711                                 buf_output_init(&out);
1712                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1713                                                         td->groupid,
1714                                                         ddir_str(o->td_ddir));
1715
1716                                 if (o->bs_is_seq_rand)
1717                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1718                                                         c1, c2, c3, c4);
1719                                 else
1720                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1721                                                         c1, c2, c3, c4, c5, c6);
1722
1723                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1724                                                 td->io_ops->name, o->iodepth);
1725                                 log_info_buf(out.buf, out.buflen);
1726                                 buf_output_free(&out);
1727
1728                                 free(c1);
1729                                 free(c2);
1730                                 free(c3);
1731                                 free(c4);
1732                                 free(c5);
1733                                 free(c6);
1734                         }
1735                 } else if (job_add_num == 1)
1736                         log_info("...\n");
1737         }
1738
1739         if (td_steadystate_init(td))
1740                 goto err;
1741
1742         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1743                 goto err;
1744
1745         if (merge_blktrace_only) {
1746                 put_job(td);
1747                 return 0;
1748         }
1749
1750         /*
1751          * recurse add identical jobs, clear numjobs and stonewall options
1752          * as they don't apply to sub-jobs
1753          */
1754         numjobs = o->numjobs;
1755         while (--numjobs) {
1756                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1757
1758                 if (!td_new)
1759                         goto err;
1760
1761                 td_new->o.numjobs = 1;
1762                 td_new->o.stonewall = 0;
1763                 td_new->o.new_group = 0;
1764                 td_new->subjob_number = numjobs;
1765                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1766                 td_new->o.ss_limit = o->ss_limit;
1767
1768                 if (file_alloced) {
1769                         if (td_new->files) {
1770                                 struct fio_file *f;
1771                                 for_each_file(td_new, f, i)
1772                                         fio_file_free(f);
1773                                 free(td_new->files);
1774                                 td_new->files = NULL;
1775                         }
1776                         td_new->files_index = 0;
1777                         td_new->files_size = 0;
1778                         if (td_new->o.filename) {
1779                                 free(td_new->o.filename);
1780                                 td_new->o.filename = NULL;
1781                         }
1782                 }
1783
1784                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1785                         goto err;
1786         }
1787
1788         return 0;
1789 err:
1790         put_job(td);
1791         return -1;
1792 }
1793
1794 /*
1795  * Parse as if 'o' was a command line
1796  */
1797 void add_job_opts(const char **o, int client_type)
1798 {
1799         struct thread_data *td, *td_parent;
1800         int i, in_global = 1;
1801         char jobname[32];
1802
1803         i = 0;
1804         td_parent = td = NULL;
1805         while (o[i]) {
1806                 if (!strncmp(o[i], "name", 4)) {
1807                         in_global = 0;
1808                         if (td)
1809                                 add_job(td, jobname, 0, 0, client_type);
1810                         td = NULL;
1811                         sprintf(jobname, "%s", o[i] + 5);
1812                 }
1813                 if (in_global && !td_parent)
1814                         td_parent = get_new_job(true, &def_thread, false, jobname);
1815                 else if (!in_global && !td) {
1816                         if (!td_parent)
1817                                 td_parent = &def_thread;
1818                         td = get_new_job(false, td_parent, false, jobname);
1819                 }
1820                 if (in_global)
1821                         fio_options_parse(td_parent, (char **) &o[i], 1);
1822                 else
1823                         fio_options_parse(td, (char **) &o[i], 1);
1824                 i++;
1825         }
1826
1827         if (td)
1828                 add_job(td, jobname, 0, 0, client_type);
1829 }
1830
1831 static int skip_this_section(const char *name)
1832 {
1833         int i;
1834
1835         if (!nr_job_sections)
1836                 return 0;
1837         if (!strncmp(name, "global", 6))
1838                 return 0;
1839
1840         for (i = 0; i < nr_job_sections; i++)
1841                 if (!strcmp(job_sections[i], name))
1842                         return 0;
1843
1844         return 1;
1845 }
1846
1847 static int is_empty_or_comment(char *line)
1848 {
1849         unsigned int i;
1850
1851         for (i = 0; i < strlen(line); i++) {
1852                 if (line[i] == ';')
1853                         return 1;
1854                 if (line[i] == '#')
1855                         return 1;
1856                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1857                         return 0;
1858         }
1859
1860         return 1;
1861 }
1862
1863 /*
1864  * This is our [ini] type file parser.
1865  */
1866 static int __parse_jobs_ini(struct thread_data *td,
1867                 char *file, int is_buf, int stonewall_flag, int type,
1868                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1869 {
1870         bool global = false;
1871         bool stdin_occupied = false;
1872         char *string;
1873         FILE *f;
1874         char *p;
1875         int ret = 0, stonewall;
1876         int first_sect = 1;
1877         int skip_fgets = 0;
1878         int inside_skip = 0;
1879         char **opts;
1880         int i, alloc_opts, num_opts;
1881
1882         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1883         assert(td || !nested);
1884
1885         if (is_buf)
1886                 f = NULL;
1887         else {
1888                 if (!strcmp(file, "-")) {
1889                         f = stdin;
1890                         stdin_occupied = true;
1891                 } else
1892                         f = fopen(file, "r");
1893
1894                 if (!f) {
1895                         int __err = errno;
1896
1897                         log_err("fio: unable to open '%s' job file\n", file);
1898                         if (td)
1899                                 td_verror(td, __err, "job file open");
1900                         return 1;
1901                 }
1902         }
1903
1904         string = malloc(OPT_LEN_MAX);
1905
1906         /*
1907          * it's really 256 + small bit, 280 should suffice
1908          */
1909         if (!nested) {
1910                 name = malloc(280);
1911                 memset(name, 0, 280);
1912         }
1913
1914         opts = NULL;
1915         if (nested && popts) {
1916                 opts = *popts;
1917                 alloc_opts = *aopts;
1918                 num_opts = *nopts;
1919         }
1920
1921         if (!opts) {
1922                 alloc_opts = 8;
1923                 opts = malloc(sizeof(char *) * alloc_opts);
1924                 num_opts = 0;
1925         }
1926
1927         stonewall = stonewall_flag;
1928         do {
1929                 /*
1930                  * if skip_fgets is set, we already have loaded a line we
1931                  * haven't handled.
1932                  */
1933                 if (!skip_fgets) {
1934                         if (is_buf)
1935                                 p = strsep(&file, "\n");
1936                         else
1937                                 p = fgets(string, OPT_LEN_MAX, f);
1938                         if (!p)
1939                                 break;
1940                 }
1941
1942                 skip_fgets = 0;
1943                 strip_blank_front(&p);
1944                 strip_blank_end(p);
1945
1946                 dprint(FD_PARSE, "%s\n", p);
1947                 if (is_empty_or_comment(p))
1948                         continue;
1949
1950                 if (!nested) {
1951                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1952                                 if (inside_skip)
1953                                         continue;
1954
1955                                 log_err("fio: option <%s> outside of "
1956                                         "[] job section\n", p);
1957                                 ret = 1;
1958                                 break;
1959                         }
1960
1961                         name[strlen(name) - 1] = '\0';
1962
1963                         if (skip_this_section(name)) {
1964                                 inside_skip = 1;
1965                                 continue;
1966                         } else
1967                                 inside_skip = 0;
1968
1969                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1970
1971                         global = !strncmp(name, "global", 6);
1972
1973                         if (dump_cmdline) {
1974                                 if (first_sect)
1975                                         log_info("fio ");
1976                                 if (!global)
1977                                         log_info("--name=%s ", name);
1978                                 first_sect = 0;
1979                         }
1980
1981                         td = get_new_job(global, &def_thread, false, name);
1982                         if (!td) {
1983                                 ret = 1;
1984                                 break;
1985                         }
1986
1987                         /*
1988                          * Separate multiple job files by a stonewall
1989                          */
1990                         if (!global && stonewall) {
1991                                 td->o.stonewall = stonewall;
1992                                 stonewall = 0;
1993                         }
1994
1995                         num_opts = 0;
1996                         memset(opts, 0, alloc_opts * sizeof(char *));
1997                 }
1998                 else
1999                         skip_fgets = 1;
2000
2001                 while (1) {
2002                         if (!skip_fgets) {
2003                                 if (is_buf)
2004                                         p = strsep(&file, "\n");
2005                                 else
2006                                         p = fgets(string, OPT_LEN_MAX, f);
2007                                 if (!p)
2008                                         break;
2009                                 dprint(FD_PARSE, "%s", p);
2010                         }
2011                         else
2012                                 skip_fgets = 0;
2013
2014                         if (is_empty_or_comment(p))
2015                                 continue;
2016
2017                         strip_blank_front(&p);
2018
2019                         /*
2020                          * new section, break out and make sure we don't
2021                          * fgets() a new line at the top.
2022                          */
2023                         if (p[0] == '[') {
2024                                 if (nested) {
2025                                         log_err("No new sections in included files\n");
2026                                         ret = 1;
2027                                         goto out;
2028                                 }
2029
2030                                 skip_fgets = 1;
2031                                 break;
2032                         }
2033
2034                         strip_blank_end(p);
2035
2036                         if (!strncmp(p, "include", strlen("include"))) {
2037                                 char *filename = p + strlen("include") + 1,
2038                                         *ts, *full_fn = NULL;
2039
2040                                 /*
2041                                  * Allow for the include filename
2042                                  * specification to be relative.
2043                                  */
2044                                 if (access(filename, F_OK) &&
2045                                     (ts = strrchr(file, '/'))) {
2046                                         if (asprintf(&full_fn, "%.*s%s",
2047                                                  (int)(ts - file + 1), file,
2048                                                  filename) < 0) {
2049                                                 ret = ENOMEM;
2050                                                 break;
2051                                         }
2052                                         filename = full_fn;
2053                                 }
2054
2055                                 ret = __parse_jobs_ini(td, filename, is_buf,
2056                                                        stonewall_flag, type, 1,
2057                                                        name, &opts,
2058                                                        &alloc_opts, &num_opts);
2059
2060                                 if (ret) {
2061                                         log_err("Error %d while parsing "
2062                                                 "include file %s\n",
2063                                                 ret, filename);
2064                                 }
2065
2066                                 if (full_fn)
2067                                         free(full_fn);
2068
2069                                 if (ret)
2070                                         break;
2071
2072                                 continue;
2073                         }
2074
2075                         if (num_opts == alloc_opts) {
2076                                 alloc_opts <<= 1;
2077                                 opts = realloc(opts,
2078                                                 alloc_opts * sizeof(char *));
2079                         }
2080
2081                         opts[num_opts] = strdup(p);
2082                         num_opts++;
2083                 }
2084
2085                 if (nested) {
2086                         *popts = opts;
2087                         *aopts = alloc_opts;
2088                         *nopts = num_opts;
2089                         goto out;
2090                 }
2091
2092                 ret = fio_options_parse(td, opts, num_opts);
2093
2094                 if (!ret && td->o.read_iolog_file != NULL) {
2095                         char *fname = get_name_by_idx(td->o.read_iolog_file,
2096                                                       td->subjob_number);
2097                         if (!strcmp(fname, "-")) {
2098                                 if (stdin_occupied) {
2099                                         log_err("fio: only one user (read_iolog_file/job "
2100                                                 "file) of stdin is permitted at once but "
2101                                                 "more than one was found.\n");
2102                                         ret = 1;
2103                                 }
2104                                 stdin_occupied = true;
2105                         }
2106                 }
2107                 if (!ret) {
2108                         if (dump_cmdline)
2109                                 dump_opt_list(td);
2110
2111                         ret = add_job(td, name, 0, 0, type);
2112                 } else {
2113                         log_err("fio: job %s dropped\n", name);
2114                         put_job(td);
2115                 }
2116
2117                 for (i = 0; i < num_opts; i++)
2118                         free(opts[i]);
2119                 num_opts = 0;
2120         } while (!ret);
2121
2122         if (dump_cmdline)
2123                 log_info("\n");
2124
2125         i = 0;
2126         while (i < nr_job_sections) {
2127                 free(job_sections[i]);
2128                 i++;
2129         }
2130
2131         free(opts);
2132 out:
2133         free(string);
2134         if (!nested)
2135                 free(name);
2136         if (!is_buf && f != stdin)
2137                 fclose(f);
2138         return ret;
2139 }
2140
2141 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2142 {
2143         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2144                         0, NULL, NULL, NULL, NULL);
2145 }
2146
2147 static int fill_def_thread(void)
2148 {
2149         memset(&def_thread, 0, sizeof(def_thread));
2150         INIT_FLIST_HEAD(&def_thread.opt_list);
2151
2152         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2153         def_thread.o.error_dump = 1;
2154
2155         /*
2156          * fill default options
2157          */
2158         fio_fill_default_options(&def_thread);
2159         return 0;
2160 }
2161
2162 static void show_debug_categories(void)
2163 {
2164 #ifdef FIO_INC_DEBUG
2165         const struct debug_level *dl = &debug_levels[0];
2166         int curlen, first = 1;
2167
2168         curlen = 0;
2169         while (dl->name) {
2170                 int has_next = (dl + 1)->name != NULL;
2171
2172                 if (first || curlen + strlen(dl->name) >= 80) {
2173                         if (!first) {
2174                                 printf("\n");
2175                                 curlen = 0;
2176                         }
2177                         curlen += printf("\t\t\t%s", dl->name);
2178                         curlen += 3 * (8 - 1);
2179                         if (has_next)
2180                                 curlen += printf(",");
2181                 } else {
2182                         curlen += printf("%s", dl->name);
2183                         if (has_next)
2184                                 curlen += printf(",");
2185                 }
2186                 dl++;
2187                 first = 0;
2188         }
2189         printf("\n");
2190 #endif
2191 }
2192
2193 /*
2194  * Following options aren't printed by usage().
2195  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2196  * --latency-log - Deprecated option.
2197  */
2198 static void usage(const char *name)
2199 {
2200         printf("%s\n", fio_version_string);
2201         printf("%s [options] [job options] <job file(s)>\n", name);
2202         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2203         show_debug_categories();
2204         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2205         printf("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2206         printf("  --output\t\tWrite output to file\n");
2207         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2208         printf("  --minimal\t\tMinimal (terse) output\n");
2209         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2210         printf("  --terse-version=type\tSet terse version output format"
2211                 " (default 3, or 2 or 4)\n");
2212         printf("  --version\t\tPrint version info and exit\n");
2213         printf("  --help\t\tPrint this page\n");
2214         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2215         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2216         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2217                 " them\n");
2218         printf("  --enghelp=engine\tPrint ioengine help, or list"
2219                 " available ioengines\n");
2220         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2221                 " cmd\n");
2222         printf("  --showcmd\t\tTurn a job file into command line options\n");
2223         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2224         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2225         printf("  --eta-newline=t\tForce a new line for every 't'");
2226         printf(" period passed\n");
2227         printf("  --status-interval=t\tForce full status dump every");
2228         printf(" 't' period passed\n");
2229         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2230                 " writes\n");
2231         printf("  --section=name\tOnly run specified section in job file,"
2232                 " multiple sections can be specified\n");
2233         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2234                 " (def 16384)\n");
2235         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2236         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2237         printf("  --server=args\t\tStart a backend fio server\n");
2238         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2239         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2240         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2241         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2242                 "\t\t\t(option=system,percpu) or run unit work\n"
2243                 "\t\t\tcalibration only (option=calibrate)\n");
2244 #ifdef CONFIG_ZLIB
2245         printf("  --inflate-log=log\tInflate and output compressed log\n");
2246 #endif
2247         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2248         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2249         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2250         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2251         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2252         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2253 }
2254
2255 #ifdef FIO_INC_DEBUG
2256 const struct debug_level debug_levels[] = {
2257         { .name = "process",
2258           .help = "Process creation/exit logging",
2259           .shift = FD_PROCESS,
2260         },
2261         { .name = "file",
2262           .help = "File related action logging",
2263           .shift = FD_FILE,
2264         },
2265         { .name = "io",
2266           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2267           .shift = FD_IO,
2268         },
2269         { .name = "mem",
2270           .help = "Memory allocation/freeing logging",
2271           .shift = FD_MEM,
2272         },
2273         { .name = "blktrace",
2274           .help = "blktrace action logging",
2275           .shift = FD_BLKTRACE,
2276         },
2277         { .name = "verify",
2278           .help = "IO verification action logging",
2279           .shift = FD_VERIFY,
2280         },
2281         { .name = "random",
2282           .help = "Random generation logging",
2283           .shift = FD_RANDOM,
2284         },
2285         { .name = "parse",
2286           .help = "Parser logging",
2287           .shift = FD_PARSE,
2288         },
2289         { .name = "diskutil",
2290           .help = "Disk utility logging actions",
2291           .shift = FD_DISKUTIL,
2292         },
2293         { .name = "job",
2294           .help = "Logging related to creating/destroying jobs",
2295           .shift = FD_JOB,
2296         },
2297         { .name = "mutex",
2298           .help = "Mutex logging",
2299           .shift = FD_MUTEX
2300         },
2301         { .name = "profile",
2302           .help = "Logging related to profiles",
2303           .shift = FD_PROFILE,
2304         },
2305         { .name = "time",
2306           .help = "Logging related to time keeping functions",
2307           .shift = FD_TIME,
2308         },
2309         { .name = "net",
2310           .help = "Network logging",
2311           .shift = FD_NET,
2312         },
2313         { .name = "rate",
2314           .help = "Rate logging",
2315           .shift = FD_RATE,
2316         },
2317         { .name = "compress",
2318           .help = "Log compression logging",
2319           .shift = FD_COMPRESS,
2320         },
2321         { .name = "steadystate",
2322           .help = "Steady state detection logging",
2323           .shift = FD_STEADYSTATE,
2324         },
2325         { .name = "helperthread",
2326           .help = "Helper thread logging",
2327           .shift = FD_HELPERTHREAD,
2328         },
2329         { .name = "zbd",
2330           .help = "Zoned Block Device logging",
2331           .shift = FD_ZBD,
2332         },
2333         { .name = NULL, },
2334 };
2335
2336 static int set_debug(const char *string)
2337 {
2338         const struct debug_level *dl;
2339         char *p = (char *) string;
2340         char *opt;
2341         int i;
2342
2343         if (!string)
2344                 return 0;
2345
2346         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2347                 log_info("fio: dumping debug options:");
2348                 for (i = 0; debug_levels[i].name; i++) {
2349                         dl = &debug_levels[i];
2350                         log_info("%s,", dl->name);
2351                 }
2352                 log_info("all\n");
2353                 return 1;
2354         }
2355
2356         while ((opt = strsep(&p, ",")) != NULL) {
2357                 int found = 0;
2358
2359                 if (!strncmp(opt, "all", 3)) {
2360                         log_info("fio: set all debug options\n");
2361                         fio_debug = ~0UL;
2362                         continue;
2363                 }
2364
2365                 for (i = 0; debug_levels[i].name; i++) {
2366                         dl = &debug_levels[i];
2367                         found = !strncmp(opt, dl->name, strlen(dl->name));
2368                         if (!found)
2369                                 continue;
2370
2371                         if (dl->shift == FD_JOB) {
2372                                 opt = strchr(opt, ':');
2373                                 if (!opt) {
2374                                         log_err("fio: missing job number\n");
2375                                         break;
2376                                 }
2377                                 opt++;
2378                                 fio_debug_jobno = atoi(opt);
2379                                 log_info("fio: set debug jobno %d\n",
2380                                                         fio_debug_jobno);
2381                         } else {
2382                                 log_info("fio: set debug option %s\n", opt);
2383                                 fio_debug |= (1UL << dl->shift);
2384                         }
2385                         break;
2386                 }
2387
2388                 if (!found)
2389                         log_err("fio: debug mask %s not found\n", opt);
2390         }
2391         return 0;
2392 }
2393 #else
2394 static int set_debug(const char *string)
2395 {
2396         log_err("fio: debug tracing not included in build\n");
2397         return 1;
2398 }
2399 #endif
2400
2401 static void fio_options_fill_optstring(void)
2402 {
2403         char *ostr = cmd_optstr;
2404         int i, c;
2405
2406         c = i = 0;
2407         while (l_opts[i].name) {
2408                 ostr[c++] = l_opts[i].val;
2409                 if (l_opts[i].has_arg == required_argument)
2410                         ostr[c++] = ':';
2411                 else if (l_opts[i].has_arg == optional_argument) {
2412                         ostr[c++] = ':';
2413                         ostr[c++] = ':';
2414                 }
2415                 i++;
2416         }
2417         ostr[c] = '\0';
2418 }
2419
2420 static int client_flag_set(char c)
2421 {
2422         int i;
2423
2424         i = 0;
2425         while (l_opts[i].name) {
2426                 int val = l_opts[i].val;
2427
2428                 if (c == (val & 0xff))
2429                         return (val & FIO_CLIENT_FLAG);
2430
2431                 i++;
2432         }
2433
2434         return 0;
2435 }
2436
2437 static void parse_cmd_client(void *client, char *opt)
2438 {
2439         fio_client_add_cmd_option(client, opt);
2440 }
2441
2442 static void show_closest_option(const char *name)
2443 {
2444         int best_option, best_distance;
2445         int i, distance;
2446
2447         while (*name == '-')
2448                 name++;
2449
2450         best_option = -1;
2451         best_distance = INT_MAX;
2452         i = 0;
2453         while (l_opts[i].name) {
2454                 distance = string_distance(name, l_opts[i].name);
2455                 if (distance < best_distance) {
2456                         best_distance = distance;
2457                         best_option = i;
2458                 }
2459                 i++;
2460         }
2461
2462         if (best_option != -1 && string_distance_ok(name, best_distance))
2463                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2464 }
2465
2466 static int parse_output_format(const char *optarg)
2467 {
2468         char *p, *orig, *opt;
2469         int ret = 0;
2470
2471         p = orig = strdup(optarg);
2472
2473         output_format = 0;
2474
2475         while ((opt = strsep(&p, ",")) != NULL) {
2476                 if (!strcmp(opt, "minimal") ||
2477                     !strcmp(opt, "terse") ||
2478                     !strcmp(opt, "csv"))
2479                         output_format |= FIO_OUTPUT_TERSE;
2480                 else if (!strcmp(opt, "json"))
2481                         output_format |= FIO_OUTPUT_JSON;
2482                 else if (!strcmp(opt, "json+"))
2483                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2484                 else if (!strcmp(opt, "normal"))
2485                         output_format |= FIO_OUTPUT_NORMAL;
2486                 else {
2487                         log_err("fio: invalid output format %s\n", opt);
2488                         ret = 1;
2489                         break;
2490                 }
2491         }
2492
2493         free(orig);
2494         return ret;
2495 }
2496
2497 int parse_cmd_line(int argc, char *argv[], int client_type)
2498 {
2499         struct thread_data *td = NULL;
2500         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2501         char *ostr = cmd_optstr;
2502         char *pid_file = NULL;
2503         void *cur_client = NULL;
2504         bool backend = false;
2505
2506         /*
2507          * Reset optind handling, since we may call this multiple times
2508          * for the backend.
2509          */
2510         optind = 1;
2511
2512         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2513                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2514                         parse_cmd_client(cur_client, argv[optind - 1]);
2515                         c &= ~FIO_CLIENT_FLAG;
2516                 }
2517
2518                 switch (c) {
2519                 case 'a':
2520                         smalloc_pool_size = atoi(optarg);
2521                         smalloc_pool_size <<= 10;
2522                         sinit();
2523                         break;
2524                 case 'l':
2525                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2526                         do_exit++;
2527                         exit_val = 1;
2528                         break;
2529                 case 'b':
2530                         write_bw_log = true;
2531                         break;
2532                 case 'o': {
2533                         FILE *tmp;
2534
2535                         if (f_out && f_out != stdout)
2536                                 fclose(f_out);
2537
2538                         tmp = fopen(optarg, "w+");
2539                         if (!tmp) {
2540                                 log_err("fio: output file open error: %s\n", strerror(errno));
2541                                 exit_val = 1;
2542                                 do_exit++;
2543                                 break;
2544                         }
2545                         f_err = f_out = tmp;
2546                         break;
2547                         }
2548                 case 'm':
2549                         output_format = FIO_OUTPUT_TERSE;
2550                         break;
2551                 case 'F':
2552                         if (parse_output_format(optarg)) {
2553                                 log_err("fio: failed parsing output-format\n");
2554                                 exit_val = 1;
2555                                 do_exit++;
2556                                 break;
2557                         }
2558                         break;
2559                 case 'f':
2560                         output_format |= FIO_OUTPUT_TERSE;
2561                         break;
2562                 case 'h':
2563                         did_arg = true;
2564                         if (!cur_client) {
2565                                 usage(argv[0]);
2566                                 do_exit++;
2567                         }
2568                         break;
2569                 case 'c':
2570                         did_arg = true;
2571                         if (!cur_client) {
2572                                 fio_show_option_help(optarg);
2573                                 do_exit++;
2574                         }
2575                         break;
2576                 case 'i':
2577                         did_arg = true;
2578                         if (!cur_client) {
2579                                 exit_val = fio_show_ioengine_help(optarg);
2580                                 do_exit++;
2581                         }
2582                         break;
2583                 case 's':
2584                         did_arg = true;
2585                         dump_cmdline = true;
2586                         break;
2587                 case 'r':
2588                         read_only = 1;
2589                         break;
2590                 case 'v':
2591                         did_arg = true;
2592                         if (!cur_client) {
2593                                 log_info("%s\n", fio_version_string);
2594                                 do_exit++;
2595                         }
2596                         break;
2597                 case 'V':
2598                         terse_version = atoi(optarg);
2599                         if (!(terse_version >= 2 && terse_version <= 5)) {
2600                                 log_err("fio: bad terse version format\n");
2601                                 exit_val = 1;
2602                                 do_exit++;
2603                         }
2604                         break;
2605                 case 'e':
2606                         if (!strcmp("always", optarg))
2607                                 eta_print = FIO_ETA_ALWAYS;
2608                         else if (!strcmp("never", optarg))
2609                                 eta_print = FIO_ETA_NEVER;
2610                         break;
2611                 case 'E': {
2612                         long long t = 0;
2613
2614                         if (check_str_time(optarg, &t, 1)) {
2615                                 log_err("fio: failed parsing eta time %s\n", optarg);
2616                                 exit_val = 1;
2617                                 do_exit++;
2618                                 break;
2619                         }
2620                         eta_new_line = t / 1000;
2621                         if (!eta_new_line) {
2622                                 log_err("fio: eta new line time too short\n");
2623                                 exit_val = 1;
2624                                 do_exit++;
2625                         }
2626                         break;
2627                         }
2628                 case 'O': {
2629                         long long t = 0;
2630
2631                         if (check_str_time(optarg, &t, 1)) {
2632                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2633                                 exit_val = 1;
2634                                 do_exit++;
2635                                 break;
2636                         }
2637                         eta_interval_msec = t / 1000;
2638                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2639                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2640                                 exit_val = 1;
2641                                 do_exit++;
2642                         }
2643                         break;
2644                         }
2645                 case 'd':
2646                         if (set_debug(optarg))
2647                                 do_exit++;
2648                         break;
2649                 case 'P':
2650                         did_arg = true;
2651                         parse_only = true;
2652                         break;
2653                 case 'x': {
2654                         size_t new_size;
2655
2656                         if (!strcmp(optarg, "global")) {
2657                                 log_err("fio: can't use global as only "
2658                                         "section\n");
2659                                 do_exit++;
2660                                 exit_val = 1;
2661                                 break;
2662                         }
2663                         new_size = (nr_job_sections + 1) * sizeof(char *);
2664                         job_sections = realloc(job_sections, new_size);
2665                         job_sections[nr_job_sections] = strdup(optarg);
2666                         nr_job_sections++;
2667                         break;
2668                         }
2669 #ifdef CONFIG_ZLIB
2670                 case 'X':
2671                         exit_val = iolog_file_inflate(optarg);
2672                         did_arg = true;
2673                         do_exit++;
2674                         break;
2675 #endif
2676                 case 'p':
2677                         did_arg = true;
2678                         if (exec_profile)
2679                                 free(exec_profile);
2680                         exec_profile = strdup(optarg);
2681                         break;
2682                 case FIO_GETOPT_JOB: {
2683                         const char *opt = l_opts[lidx].name;
2684                         char *val = optarg;
2685
2686                         if (!strncmp(opt, "name", 4) && td) {
2687                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2688                                 if (ret)
2689                                         goto out_free;
2690                                 td = NULL;
2691                                 did_arg = true;
2692                         }
2693                         if (!td) {
2694                                 int is_section = !strncmp(opt, "name", 4);
2695                                 int global = 0;
2696
2697                                 if (!is_section || !strncmp(val, "global", 6))
2698                                         global = 1;
2699
2700                                 if (is_section && skip_this_section(val))
2701                                         continue;
2702
2703                                 td = get_new_job(global, &def_thread, true, NULL);
2704                                 if (!td || ioengine_load(td)) {
2705                                         if (td) {
2706                                                 put_job(td);
2707                                                 td = NULL;
2708                                         }
2709                                         do_exit++;
2710                                         exit_val = 1;
2711                                         break;
2712                                 }
2713                                 fio_options_set_ioengine_opts(l_opts, td);
2714                         }
2715
2716                         if ((!val || !strlen(val)) &&
2717                             l_opts[lidx].has_arg == required_argument) {
2718                                 log_err("fio: option %s requires an argument\n", opt);
2719                                 ret = 1;
2720                         } else
2721                                 ret = fio_cmd_option_parse(td, opt, val);
2722
2723                         if (ret) {
2724                                 if (td) {
2725                                         put_job(td);
2726                                         td = NULL;
2727                                 }
2728                                 do_exit++;
2729                                 exit_val = 1;
2730                         }
2731
2732                         if (!ret && !strcmp(opt, "ioengine")) {
2733                                 if (ioengine_load(td)) {
2734                                         put_job(td);
2735                                         td = NULL;
2736                                         do_exit++;
2737                                         exit_val = 1;
2738                                         break;
2739                                 }
2740                                 fio_options_set_ioengine_opts(l_opts, td);
2741                         }
2742                         break;
2743                 }
2744                 case FIO_GETOPT_IOENGINE: {
2745                         const char *opt = l_opts[lidx].name;
2746                         char *val = optarg;
2747
2748                         if (!td)
2749                                 break;
2750
2751                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2752                         break;
2753                 }
2754                 case 'w':
2755                         warnings_fatal = 1;
2756                         break;
2757                 case 'j':
2758                         /* we don't track/need this anymore, ignore it */
2759                         break;
2760                 case 'S':
2761                         did_arg = true;
2762 #ifndef CONFIG_NO_SHM
2763                         if (nr_clients) {
2764                                 log_err("fio: can't be both client and server\n");
2765                                 do_exit++;
2766                                 exit_val = 1;
2767                                 break;
2768                         }
2769                         if (optarg)
2770                                 fio_server_set_arg(optarg);
2771                         is_backend = true;
2772                         backend = true;
2773 #else
2774                         log_err("fio: client/server requires SHM support\n");
2775                         do_exit++;
2776                         exit_val = 1;
2777 #endif
2778                         break;
2779                 case 'D':
2780                         if (pid_file)
2781                                 free(pid_file);
2782                         pid_file = strdup(optarg);
2783                         break;
2784                 case 'I':
2785                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2786                                 /* exit on error and calibration only */
2787                                 did_arg = true;
2788                                 do_exit++;
2789                                 if (ret == -1)
2790                                         exit_val = 1;
2791                         }
2792                         break;
2793                 case 'C':
2794                         did_arg = true;
2795                         if (is_backend) {
2796                                 log_err("fio: can't be both client and server\n");
2797                                 do_exit++;
2798                                 exit_val = 1;
2799                                 break;
2800                         }
2801                         /* if --client parameter contains a pathname */
2802                         if (0 == access(optarg, R_OK)) {
2803                                 /* file contains a list of host addrs or names */
2804                                 char hostaddr[PATH_MAX] = {0};
2805                                 char formatstr[8];
2806                                 FILE * hostf = fopen(optarg, "r");
2807                                 if (!hostf) {
2808                                         log_err("fio: could not open client list file %s for read\n", optarg);
2809                                         do_exit++;
2810                                         exit_val = 1;
2811                                         break;
2812                                 }
2813                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2814                                 /*
2815                                  * read at most PATH_MAX-1 chars from each
2816                                  * record in this file
2817                                  */
2818                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2819                                         /* expect EVERY host in file to be valid */
2820                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2821                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2822                                                 do_exit++;
2823                                                 exit_val = 1;
2824                                                 break;
2825                                         }
2826                                 }
2827                                 fclose(hostf);
2828                                 break; /* no possibility of job file for "this client only" */
2829                         }
2830                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2831                                 log_err("fio: failed adding client %s\n", optarg);
2832                                 do_exit++;
2833                                 exit_val = 1;
2834                                 break;
2835                         }
2836                         /*
2837                          * If the next argument exists and isn't an option,
2838                          * assume it's a job file for this client only.
2839                          */
2840                         while (optind < argc) {
2841                                 if (!strncmp(argv[optind], "--", 2) ||
2842                                     !strncmp(argv[optind], "-", 1))
2843                                         break;
2844
2845                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2846                                         break;
2847                                 optind++;
2848                         }
2849                         break;
2850                 case 'R':
2851                         did_arg = true;
2852                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2853                                 do_exit++;
2854                                 exit_val = 1;
2855                         }
2856                         break;
2857                 case 'T':
2858                         did_arg = true;
2859                         do_exit++;
2860                         exit_val = fio_monotonic_clocktest(1);
2861                         break;
2862                 case 'G':
2863                         did_arg = true;
2864                         do_exit++;
2865                         exit_val = fio_crctest(optarg);
2866                         break;
2867                 case 'M':
2868                         did_arg = true;
2869                         do_exit++;
2870                         exit_val = fio_memcpy_test(optarg);
2871                         break;
2872                 case 'L': {
2873                         long long val;
2874
2875                         if (check_str_time(optarg, &val, 1)) {
2876                                 log_err("fio: failed parsing time %s\n", optarg);
2877                                 do_exit++;
2878                                 exit_val = 1;
2879                                 break;
2880                         }
2881                         if (val < 1000) {
2882                                 log_err("fio: status interval too small\n");
2883                                 do_exit++;
2884                                 exit_val = 1;
2885                         }
2886                         status_interval = val / 1000;
2887                         break;
2888                         }
2889                 case 'W':
2890                         if (trigger_file)
2891                                 free(trigger_file);
2892                         trigger_file = strdup(optarg);
2893                         break;
2894                 case 'H':
2895                         if (trigger_cmd)
2896                                 free(trigger_cmd);
2897                         trigger_cmd = strdup(optarg);
2898                         break;
2899                 case 'J':
2900                         if (trigger_remote_cmd)
2901                                 free(trigger_remote_cmd);
2902                         trigger_remote_cmd = strdup(optarg);
2903                         break;
2904                 case 'K':
2905                         if (aux_path)
2906                                 free(aux_path);
2907                         aux_path = strdup(optarg);
2908                         break;
2909                 case 'B':
2910                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2911                                 log_err("fio: failed parsing time %s\n", optarg);
2912                                 do_exit++;
2913                                 exit_val = 1;
2914                         }
2915                         trigger_timeout /= 1000000;
2916                         break;
2917
2918                 case 'A':
2919                         did_arg = true;
2920                         merge_blktrace_only = true;
2921                         break;
2922                 case '?':
2923                         log_err("%s: unrecognized option '%s'\n", argv[0],
2924                                                         argv[optind - 1]);
2925                         show_closest_option(argv[optind - 1]);
2926                         fallthrough;
2927                 default:
2928                         do_exit++;
2929                         exit_val = 1;
2930                         break;
2931                 }
2932                 if (do_exit)
2933                         break;
2934         }
2935
2936         if (do_exit && !(is_backend || nr_clients))
2937                 exit(exit_val);
2938
2939         if (nr_clients && fio_clients_connect())
2940                 exit(1);
2941
2942         if (is_backend && backend)
2943                 return fio_start_server(pid_file);
2944         else if (pid_file)
2945                 free(pid_file);
2946
2947         if (td) {
2948                 if (!ret) {
2949                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2950                         if (ret)
2951                                 exit(1);
2952                 }
2953         }
2954
2955         while (!ret && optind < argc) {
2956                 ini_idx++;
2957                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2958                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2959                 optind++;
2960         }
2961
2962 out_free:
2963         return ini_idx;
2964 }
2965
2966 int fio_init_options(void)
2967 {
2968         f_out = stdout;
2969         f_err = stderr;
2970
2971         fio_options_fill_optstring();
2972         fio_options_dup_and_init(l_opts);
2973
2974         atexit(free_shm);
2975
2976         if (fill_def_thread())
2977                 return 1;
2978
2979         return 0;
2980 }
2981
2982 extern int fio_check_options(struct thread_options *);
2983
2984 int parse_options(int argc, char *argv[])
2985 {
2986         const int type = FIO_CLIENT_TYPE_CLI;
2987         int job_files, i;
2988
2989         if (fio_init_options())
2990                 return 1;
2991         if (fio_test_cconv(&def_thread.o))
2992                 log_err("fio: failed internal cconv test\n");
2993
2994         job_files = parse_cmd_line(argc, argv, type);
2995
2996         if (job_files > 0) {
2997                 for (i = 0; i < job_files; i++) {
2998                         if (i && fill_def_thread())
2999                                 return 1;
3000                         if (nr_clients) {
3001                                 if (fio_clients_send_ini(ini_file[i]))
3002                                         return 1;
3003                                 free(ini_file[i]);
3004                         } else if (!is_backend) {
3005                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
3006                                         return 1;
3007                                 free(ini_file[i]);
3008                         }
3009                 }
3010         } else if (nr_clients) {
3011                 if (fill_def_thread())
3012                         return 1;
3013                 if (fio_clients_send_ini(NULL))
3014                         return 1;
3015         }
3016
3017         free(ini_file);
3018         fio_options_free(&def_thread);
3019         filesetup_mem_free();
3020
3021         if (!thread_number) {
3022                 if (parse_dryrun())
3023                         return 0;
3024                 if (exec_profile)
3025                         return 0;
3026                 if (is_backend || nr_clients)
3027                         return 0;
3028                 if (did_arg)
3029                         return 0;
3030
3031                 log_err("No job(s) defined\n\n");
3032                 usage(argv[0]);
3033                 return 1;
3034         }
3035
3036         if (output_format & FIO_OUTPUT_NORMAL)
3037                 log_info("%s\n", fio_version_string);
3038
3039         return 0;
3040 }
3041
3042 void options_default_fill(struct thread_options *o)
3043 {
3044         memcpy(o, &def_thread.o, sizeof(*o));
3045 }
3046
3047 struct thread_data *get_global_options(void)
3048 {
3049         return &def_thread;
3050 }