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/getopt.h"
  36 #include "oslib/strcasestr.h"
  37
  38 #include "crc/test.h"
  39 #include "lib/pow2.h"
  40 #include "lib/memcpy.h"
  41
  42 const char fio_version_string[] = FIO_VERSION;
  43
  44 #define FIO_RANDSEED            (0xb1899bedUL)
  45
  46 static char **ini_file;
  47 static int max_jobs = FIO_MAX_JOBS;
  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_data *threads = NULL;
  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         if (threads) {
 304                 void *tp = threads;
 305 #ifndef CONFIG_NO_SHM
 306                 struct shmid_ds sbuf;
 307
 308                 threads = NULL;
 309                 shmdt(tp);
 310                 shmctl(shm_id, IPC_RMID, &sbuf);
 311                 shm_id = -1;
 312 #else
 313                 threads = NULL;
 314                 free(tp);
 315 #endif
 316         }
 317 }
 318
 319 static void free_shm(void)
 320 {
 321         if (threads) {
 322                 flow_exit();
 323                 fio_debug_jobp = NULL;
 324                 fio_warned = NULL;
 325                 free_threads_shm();
 326         }
 327
 328         free(trigger_file);
 329         free(trigger_cmd);
 330         free(trigger_remote_cmd);
 331         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 332
 333         options_free(fio_options, &def_thread.o);
 334         fio_filelock_exit();
 335         file_hash_exit();
 336         scleanup();
 337 }
 338
 339 /*
 340  * The thread area is shared between the main process and the job
 341  * threads/processes. So setup a shared memory segment that will hold
 342  * all the job info. We use the end of the region for keeping track of
 343  * open files across jobs, for file sharing.
 344  */
 345 static int setup_thread_area(void)
 346 {
 347         int i;
 348
 349         if (threads)
 350                 return 0;
 351
 352         /*
 353          * 1024 is too much on some machines, scale max_jobs if
 354          * we get a failure that looks like too large a shm segment
 355          */
 356         do {
 357                 size_t size = max_jobs * sizeof(struct thread_data);
 358
 359                 size += 2 * sizeof(unsigned int);
 360
 361 #ifndef CONFIG_NO_SHM
 362                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 363                 if (shm_id != -1)
 364                         break;
 365                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 366                         perror("shmget");
 367                         break;
 368                 }
 369 #else
 370                 threads = malloc(size);
 371                 if (threads)
 372                         break;
 373 #endif
 374
 375                 max_jobs >>= 1;
 376         } while (max_jobs);
 377
 378 #ifndef CONFIG_NO_SHM
 379         if (shm_id == -1)
 380                 return 1;
 381
 382         threads = shmat(shm_id, NULL, 0);
 383         if (threads == (void *) -1) {
 384                 perror("shmat");
 385                 return 1;
 386         }
 387         if (shm_attach_to_open_removed())
 388                 shmctl(shm_id, IPC_RMID, NULL);
 389 #endif
 390
 391         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 392         for (i = 0; i < max_jobs; i++)
 393                 DRD_IGNORE_VAR(threads[i]);
 394         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
 395         *fio_debug_jobp = -1;
 396         fio_warned = fio_debug_jobp + 1;
 397         *fio_warned = 0;
 398
 399         flow_init();
 400
 401         return 0;
 402 }
 403
 404 static void dump_print_option(struct print_option *p)
 405 {
 406         const char *delim;
 407
 408         if (!strcmp("description", p->name))
 409                 delim = "\"";
 410         else
 411                 delim = "";
 412
 413         log_info("--%s%s", p->name, p->value ? "" : " ");
 414         if (p->value)
 415                 log_info("=%s%s%s ", delim, p->value, delim);
 416 }
 417
 418 static void dump_opt_list(struct thread_data *td)
 419 {
 420         struct flist_head *entry;
 421         struct print_option *p;
 422
 423         if (flist_empty(&td->opt_list))
 424                 return;
 425
 426         flist_for_each(entry, &td->opt_list) {
 427                 p = flist_entry(entry, struct print_option, list);
 428                 dump_print_option(p);
 429         }
 430 }
 431
 432 static void fio_dump_options_free(struct thread_data *td)
 433 {
 434         while (!flist_empty(&td->opt_list)) {
 435                 struct print_option *p;
 436
 437                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 438                 flist_del_init(&p->list);
 439                 free(p->name);
 440                 free(p->value);
 441                 free(p);
 442         }
 443 }
 444
 445 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 446 {
 447         struct flist_head *entry;
 448
 449         if (flist_empty(&src->opt_list))
 450                 return;
 451
 452         flist_for_each(entry, &src->opt_list) {
 453                 struct print_option *srcp, *dstp;
 454
 455                 srcp = flist_entry(entry, struct print_option, list);
 456                 dstp = malloc(sizeof(*dstp));
 457                 dstp->name = strdup(srcp->name);
 458                 if (srcp->value)
 459                         dstp->value = strdup(srcp->value);
 460                 else
 461                         dstp->value = NULL;
 462                 flist_add_tail(&dstp->list, &dst->opt_list);
 463         }
 464 }
 465
 466 /*
 467  * Return a free job structure.
 468  */
 469 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 470                                        bool preserve_eo, const char *jobname)
 471 {
 472         struct thread_data *td;
 473
 474         if (global)
 475                 return &def_thread;
 476         if (setup_thread_area()) {
 477                 log_err("error: failed to setup shm segment\n");
 478                 return NULL;
 479         }
 480         if (thread_number >= max_jobs) {
 481                 log_err("error: maximum number of jobs (%d) reached.\n",
 482                                 max_jobs);
 483                 return NULL;
 484         }
 485
 486         td = &threads[thread_number++];
 487         *td = *parent;
 488
 489         INIT_FLIST_HEAD(&td->opt_list);
 490         if (parent != &def_thread)
 491                 copy_opt_list(td, parent);
 492
 493         td->io_ops = NULL;
 494         td->io_ops_init = 0;
 495         if (!preserve_eo)
 496                 td->eo = NULL;
 497
 498         td->o.uid = td->o.gid = -1U;
 499
 500         dup_files(td, parent);
 501         fio_options_mem_dupe(td);
 502
 503         profile_add_hooks(td);
 504
 505         td->thread_number = thread_number;
 506         td->subjob_number = 0;
 507
 508         if (jobname)
 509                 td->o.name = strdup(jobname);
 510
 511         if (!parent->o.group_reporting || parent == &def_thread)
 512                 stat_number++;
 513
 514         return td;
 515 }
 516
 517 static void put_job(struct thread_data *td)
 518 {
 519         if (td == &def_thread)
 520                 return;
 521
 522         profile_td_exit(td);
 523         flow_exit_job(td);
 524
 525         if (td->error)
 526                 log_info("fio: %s\n", td->verror);
 527
 528         fio_options_free(td);
 529         fio_dump_options_free(td);
 530         if (td->io_ops)
 531                 free_ioengine(td);
 532
 533         if (td->o.name)
 534                 free(td->o.name);
 535
 536         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 537         thread_number--;
 538 }
 539
 540 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 541 {
 542         unsigned long long bs = td->o.min_bs[ddir];
 543
 544         assert(ddir_rw(ddir));
 545
 546         if (td->o.rate[ddir])
 547                 td->rate_bps[ddir] = td->o.rate[ddir];
 548         else
 549                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 550
 551         if (!td->rate_bps[ddir]) {
 552                 log_err("rate lower than supported\n");
 553                 return -1;
 554         }
 555
 556         td->rate_next_io_time[ddir] = 0;
 557         td->rate_io_issue_bytes[ddir] = 0;
 558         td->last_usec[ddir] = 0;
 559         return 0;
 560 }
 561
 562 static int setup_rate(struct thread_data *td)
 563 {
 564         int ret = 0;
 565
 566         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 567                 ret = __setup_rate(td, DDIR_READ);
 568         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 569                 ret |= __setup_rate(td, DDIR_WRITE);
 570         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 571                 ret |= __setup_rate(td, DDIR_TRIM);
 572
 573         return ret;
 574 }
 575
 576 static int fixed_block_size(struct thread_options *o)
 577 {
 578         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 579                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 580                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 581                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 582                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 583 }
 584
 585 /*
 586  * <3 Johannes
 587  */
 588 static unsigned int gcd(unsigned int m, unsigned int n)
 589 {
 590         if (!n)
 591                 return m;
 592
 593         return gcd(n, m % n);
 594 }
 595
 596 /*
 597  * Lazy way of fixing up options that depend on each other. We could also
 598  * define option callback handlers, but this is easier.
 599  */
 600 static int fixup_options(struct thread_data *td)
 601 {
 602         struct thread_options *o = &td->o;
 603         int ret = 0;
 604
 605         if (read_only && (td_write(td) || td_trim(td))) {
 606                 log_err("fio: trim and write operations are not allowed"
 607                          " with the --readonly parameter.\n");
 608                 ret |= 1;
 609         }
 610
 611 #ifndef CONFIG_PSHARED
 612         if (!o->use_thread) {
 613                 log_info("fio: this platform does not support process shared"
 614                          " mutexes, forcing use of threads. Use the 'thread'"
 615                          " option to get rid of this warning.\n");
 616                 o->use_thread = 1;
 617                 ret |= warnings_fatal;
 618         }
 619 #endif
 620
 621         if (o->write_iolog_file && o->read_iolog_file) {
 622                 log_err("fio: read iolog overrides write_iolog\n");
 623                 free(o->write_iolog_file);
 624                 o->write_iolog_file = NULL;
 625                 ret |= warnings_fatal;
 626         }
 627
 628         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
 629                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
 630                 ret |= 1;
 631         }
 632
 633         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
 634                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
 635                 ret |= 1;
 636         }
 637
 638         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
 639                 if (o->zone_size)
 640                         o->zone_mode = ZONE_MODE_STRIDED;
 641                 else
 642                         o->zone_mode = ZONE_MODE_NONE;
 643         }
 644
 645         /*
 646          * Strided zone mode only really works with 1 file.
 647          */
 648         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
 649                 o->zone_mode = ZONE_MODE_NONE;
 650
 651         /*
 652          * If zone_range isn't specified, backward compatibility dictates it
 653          * should be made equal to zone_size.
 654          */
 655         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
 656                 o->zone_range = o->zone_size;
 657
 658         /*
 659          * Reads can do overwrites, we always need to pre-create the file
 660          */
 661         if (td_read(td))
 662                 o->overwrite = 1;
 663
 664         if (!o->min_bs[DDIR_READ])
 665                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 666         if (!o->max_bs[DDIR_READ])
 667                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 668         if (!o->min_bs[DDIR_WRITE])
 669                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 670         if (!o->max_bs[DDIR_WRITE])
 671                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 672         if (!o->min_bs[DDIR_TRIM])
 673                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 674         if (!o->max_bs[DDIR_TRIM])
 675                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 676
 677         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 678         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 679
 680         /*
 681          * For random IO, allow blockalign offset other than min_bs.
 682          */
 683         if (!o->ba[DDIR_READ] || !td_random(td))
 684                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 685         if (!o->ba[DDIR_WRITE] || !td_random(td))
 686                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 687         if (!o->ba[DDIR_TRIM] || !td_random(td))
 688                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 689
 690         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 691             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 692             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 693             !o->norandommap) {
 694                 log_err("fio: Any use of blockalign= turns off randommap\n");
 695                 o->norandommap = 1;
 696                 ret |= warnings_fatal;
 697         }
 698
 699         if (!o->file_size_high)
 700                 o->file_size_high = o->file_size_low;
 701
 702         if (o->start_delay_high) {
 703                 if (!o->start_delay_orig)
 704                         o->start_delay_orig = o->start_delay;
 705                 o->start_delay = rand_between(&td->delay_state,
 706                                                 o->start_delay_orig,
 707                                                 o->start_delay_high);
 708         }
 709
 710         if (o->norandommap && o->verify != VERIFY_NONE
 711             && !fixed_block_size(o))  {
 712                 log_err("fio: norandommap given for variable block sizes, "
 713                         "verify limited\n");
 714                 ret |= warnings_fatal;
 715         }
 716         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 717                 log_err("fio: bs_unaligned may not work with raw io\n");
 718
 719         /*
 720          * thinktime_spin must be less than thinktime
 721          */
 722         if (o->thinktime_spin > o->thinktime)
 723                 o->thinktime_spin = o->thinktime;
 724
 725         /*
 726          * The low water mark cannot be bigger than the iodepth
 727          */
 728         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 729                 o->iodepth_low = o->iodepth;
 730
 731         /*
 732          * If batch number isn't set, default to the same as iodepth
 733          */
 734         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 735                 o->iodepth_batch = o->iodepth;
 736
 737         /*
 738          * If max batch complete number isn't set or set incorrectly,
 739          * default to the same as iodepth_batch_complete_min
 740          */
 741         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 742                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 743
 744         /*
 745          * There's no need to check for in-flight overlapping IOs if the job
 746          * isn't changing data or the maximum iodepth is guaranteed to be 1
 747          * when we are not in offload mode
 748          */
 749         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 750             (!(td_write(td) || td_trim(td)) || o->iodepth == 1) &&
 751             o->io_submit_mode != IO_MODE_OFFLOAD)
 752                 o->serialize_overlap = 0;
 753
 754         if (o->nr_files > td->files_index)
 755                 o->nr_files = td->files_index;
 756
 757         if (o->open_files > o->nr_files || !o->open_files)
 758                 o->open_files = o->nr_files;
 759
 760         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 761             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 762             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 763             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 764                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 765                 ret |= 1;
 766         }
 767         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 768             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 769             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 770             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 771             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 772             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 773                 log_err("fio: minimum rate exceeds rate\n");
 774                 ret |= 1;
 775         }
 776
 777         if (!o->timeout && o->time_based) {
 778                 log_err("fio: time_based requires a runtime/timeout setting\n");
 779                 o->time_based = 0;
 780                 ret |= warnings_fatal;
 781         }
 782
 783         if (o->fill_device && !o->size)
 784                 o->size = -1ULL;
 785
 786         if (o->verify != VERIFY_NONE) {
 787                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 788                     (o->filename ||
 789                      !(o->unique_filename &&
 790                        strstr(o->filename_format, "$jobname") &&
 791                        strstr(o->filename_format, "$jobnum") &&
 792                        strstr(o->filename_format, "$filenum")))) {
 793                         log_info("fio: multiple writers may overwrite blocks "
 794                                 "that belong to other jobs. This can cause "
 795                                 "verification failures.\n");
 796                         ret |= warnings_fatal;
 797                 }
 798
 799                 /*
 800                  * Warn if verification is requested but no verification of any
 801                  * kind can be started due to time constraints
 802                  */
 803                 if (td_write(td) && o->do_verify && o->timeout &&
 804                     o->time_based && !td_read(td) && !o->verify_backlog) {
 805                         log_info("fio: verification read phase will never "
 806                                  "start because write phase uses all of "
 807                                  "runtime\n");
 808                         ret |= warnings_fatal;
 809                 }
 810
 811                 if (!fio_option_is_set(o, refill_buffers))
 812                         o->refill_buffers = 1;
 813
 814                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 815                     !o->verify_interval)
 816                         o->verify_interval = o->min_bs[DDIR_WRITE];
 817
 818                 /*
 819                  * Verify interval must be smaller or equal to the
 820                  * write size.
 821                  */
 822                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 823                         o->verify_interval = o->min_bs[DDIR_WRITE];
 824                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 825                         o->verify_interval = o->min_bs[DDIR_READ];
 826
 827                 /*
 828                  * Verify interval must be a factor of both min and max
 829                  * write size
 830                  */
 831                 if (!o->verify_interval ||
 832                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 833                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 834                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 835                                                         o->max_bs[DDIR_WRITE]);
 836         }
 837
 838         if (o->pre_read) {
 839                 if (o->invalidate_cache)
 840                         o->invalidate_cache = 0;
 841                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 842                         log_info("fio: cannot pre-read files with an IO engine"
 843                                  " that isn't seekable. Pre-read disabled.\n");
 844                         ret |= warnings_fatal;
 845                 }
 846         }
 847
 848         if (o->unit_base == N2S_NONE) {
 849                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 850                         o->unit_base = N2S_BITPERSEC;
 851                 else
 852                         o->unit_base = N2S_BYTEPERSEC;
 853         }
 854
 855 #ifndef FIO_HAVE_ANY_FALLOCATE
 856         /* Platform doesn't support any fallocate so force it to none */
 857         o->fallocate_mode = FIO_FALLOCATE_NONE;
 858 #endif
 859
 860 #ifndef CONFIG_FDATASYNC
 861         if (o->fdatasync_blocks) {
 862                 log_info("fio: this platform does not support fdatasync()"
 863                          " falling back to using fsync().  Use the 'fsync'"
 864                          " option instead of 'fdatasync' to get rid of"
 865                          " this warning\n");
 866                 o->fsync_blocks = o->fdatasync_blocks;
 867                 o->fdatasync_blocks = 0;
 868                 ret |= warnings_fatal;
 869         }
 870 #endif
 871
 872 #ifdef WIN32
 873         /*
 874          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 875          * so fail if we're passed those flags
 876          */
 877         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 878                 log_err("fio: Windows does not support direct or non-buffered io with"
 879                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 880                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 881                 ret |= 1;
 882         }
 883 #endif
 884
 885         /*
 886          * For fully compressible data, just zero them at init time.
 887          * It's faster than repeatedly filling it. For non-zero
 888          * compression, we should have refill_buffers set. Set it, unless
 889          * the job file already changed it.
 890          */
 891         if (o->compress_percentage) {
 892                 if (o->compress_percentage == 100) {
 893                         o->zero_buffers = 1;
 894                         o->compress_percentage = 0;
 895                 } else if (!fio_option_is_set(o, refill_buffers)) {
 896                         o->refill_buffers = 1;
 897                         td->flags |= TD_F_REFILL_BUFFERS;
 898                 }
 899         }
 900
 901         /*
 902          * Using a non-uniform random distribution excludes usage of
 903          * a random map
 904          */
 905         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 906                 o->norandommap = 1;
 907
 908         /*
 909          * If size is set but less than the min block size, complain
 910          */
 911         if (o->size && o->size < td_min_bs(td)) {
 912                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 913                         (unsigned long long) o->size, td_min_bs(td));
 914                 ret |= 1;
 915         }
 916
 917         /*
 918          * O_ATOMIC implies O_DIRECT
 919          */
 920         if (o->oatomic)
 921                 o->odirect = 1;
 922
 923         /*
 924          * If randseed is set, that overrides randrepeat
 925          */
 926         if (fio_option_is_set(o, rand_seed))
 927                 o->rand_repeatable = 0;
 928
 929         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 930                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 931                 ret |= 1;
 932         }
 933
 934         if (fio_option_is_set(o, gtod_cpu)) {
 935                 fio_gtod_init();
 936                 fio_gtod_set_cpu(o->gtod_cpu);
 937                 fio_gtod_offload = 1;
 938         }
 939
 940         td->loops = o->loops;
 941         if (!td->loops)
 942                 td->loops = 1;
 943
 944         if (o->block_error_hist && o->nr_files != 1) {
 945                 log_err("fio: block error histogram only available "
 946                         "with a single file per job, but %d files "
 947                         "provided\n", o->nr_files);
 948                 ret |= 1;
 949         }
 950
 951         if (fio_option_is_set(o, clat_percentiles) &&
 952             !fio_option_is_set(o, lat_percentiles)) {
 953                 o->lat_percentiles = !o->clat_percentiles;
 954         } else if (fio_option_is_set(o, lat_percentiles) &&
 955                    !fio_option_is_set(o, clat_percentiles)) {
 956                 o->clat_percentiles = !o->lat_percentiles;
 957         } else if (fio_option_is_set(o, lat_percentiles) &&
 958                    fio_option_is_set(o, clat_percentiles) &&
 959                    o->lat_percentiles && o->clat_percentiles) {
 960                 log_err("fio: lat_percentiles and clat_percentiles are "
 961                         "mutually exclusive\n");
 962                 ret |= 1;
 963         }
 964
 965         if (o->disable_lat)
 966                 o->lat_percentiles = 0;
 967         if (o->disable_clat)
 968                 o->clat_percentiles = 0;
 969
 970         /*
 971          * Fix these up to be nsec internally
 972          */
 973         o->max_latency *= 1000ULL;
 974         o->latency_target *= 1000ULL;
 975         o->latency_window *= 1000ULL;
 976
 977         return ret;
 978 }
 979
 980 static void init_rand_file_service(struct thread_data *td)
 981 {
 982         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 983         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 984
 985         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 986                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 987                 zipf_disable_hash(&td->next_file_zipf);
 988         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 989                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 990                 zipf_disable_hash(&td->next_file_zipf);
 991         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 992                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 993                 gauss_disable_hash(&td->next_file_gauss);
 994         }
 995 }
 996
 997 void td_fill_verify_state_seed(struct thread_data *td)
 998 {
 999         bool use64;
1000
1001         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1002                 use64 = true;
1003         else
1004                 use64 = false;
1005
1006         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
1007                 use64);
1008 }
1009
1010 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
1011 {
1012         unsigned int read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
1013         unsigned int write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
1014         unsigned int trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
1015         int i;
1016
1017         /*
1018          * trimwrite is special in that we need to generate the same
1019          * offsets to get the "write after trim" effect. If we are
1020          * using bssplit to set buffer length distributions, ensure that
1021          * we seed the trim and write generators identically. Ditto for
1022          * verify, read and writes must have the same seed, if we are doing
1023          * read verify.
1024          */
1025         if (td->o.verify != VERIFY_NONE)
1026                 write_seed = read_seed;
1027         if (td_trimwrite(td))
1028                 trim_seed = write_seed;
1029         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1030         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1031         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1032
1033         td_fill_verify_state_seed(td);
1034         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1035
1036         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1037                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1038         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1039                 init_rand_file_service(td);
1040
1041         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1042         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1043         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1044         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1045         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1046         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1047         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1048         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1049
1050         if (!td_random(td))
1051                 return;
1052
1053         if (td->o.rand_repeatable)
1054                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1055
1056         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1057
1058         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1059                 struct frand_state *s = &td->seq_rand_state[i];
1060
1061                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1062         }
1063 }
1064
1065 void td_fill_rand_seeds(struct thread_data *td)
1066 {
1067         bool use64;
1068
1069         if (td->o.allrand_repeatable) {
1070                 unsigned int i;
1071
1072                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1073                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1074                                 + i;
1075         }
1076
1077         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1078                 use64 = true;
1079         else
1080                 use64 = false;
1081
1082         td_fill_rand_seeds_internal(td, use64);
1083
1084         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1085         frand_copy(&td->buf_state_prev, &td->buf_state);
1086 }
1087
1088 /*
1089  * Initializes the ioengine configured for a job, if it has not been done so
1090  * already.
1091  */
1092 int ioengine_load(struct thread_data *td)
1093 {
1094         if (!td->o.ioengine) {
1095                 log_err("fio: internal fault, no IO engine specified\n");
1096                 return 1;
1097         }
1098
1099         if (td->io_ops) {
1100                 struct ioengine_ops *ops;
1101                 void *dlhandle;
1102
1103                 /* An engine is loaded, but the requested ioengine
1104                  * may have changed.
1105                  */
1106                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1107                         /* The right engine is already loaded */
1108                         return 0;
1109                 }
1110
1111                 /*
1112                  * Name of file and engine may be different, load ops
1113                  * for this name and see if they match. If they do, then
1114                  * the engine is unchanged.
1115                  */
1116                 dlhandle = td->io_ops_dlhandle;
1117                 ops = load_ioengine(td);
1118                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1119                         if (dlhandle)
1120                                 dlclose(dlhandle);
1121                         return 0;
1122                 }
1123
1124                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1125                         dlclose(dlhandle);
1126
1127                 /* Unload the old engine. */
1128                 free_ioengine(td);
1129         }
1130
1131         td->io_ops = load_ioengine(td);
1132         if (!td->io_ops) {
1133                 log_err("fio: failed to load engine\n");
1134                 return 1;
1135         }
1136
1137         if (td->io_ops->option_struct_size && td->io_ops->options) {
1138                 /*
1139                  * In cases where td->eo is set, clone it for a child thread.
1140                  * This requires that the parent thread has the same ioengine,
1141                  * but that requirement must be enforced by the code which
1142                  * cloned the thread.
1143                  */
1144                 void *origeo = td->eo;
1145                 /*
1146                  * Otherwise use the default thread options.
1147                  */
1148                 if (!origeo && td != &def_thread && def_thread.eo &&
1149                     def_thread.io_ops->options == td->io_ops->options)
1150                         origeo = def_thread.eo;
1151
1152                 options_init(td->io_ops->options);
1153                 td->eo = malloc(td->io_ops->option_struct_size);
1154                 /*
1155                  * Use the default thread as an option template if this uses the
1156                  * same options structure and there are non-default options
1157                  * used.
1158                  */
1159                 if (origeo) {
1160                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1161                         options_mem_dupe(td->io_ops->options, td->eo);
1162                 } else {
1163                         memset(td->eo, 0, td->io_ops->option_struct_size);
1164                         fill_default_options(td->eo, td->io_ops->options);
1165                 }
1166                 *(struct thread_data **)td->eo = td;
1167         }
1168
1169         if (td->o.odirect)
1170                 td->io_ops->flags |= FIO_RAWIO;
1171
1172         td_set_ioengine_flags(td);
1173         return 0;
1174 }
1175
1176 static void init_flags(struct thread_data *td)
1177 {
1178         struct thread_options *o = &td->o;
1179         int i;
1180
1181         if (o->verify_backlog)
1182                 td->flags |= TD_F_VER_BACKLOG;
1183         if (o->trim_backlog)
1184                 td->flags |= TD_F_TRIM_BACKLOG;
1185         if (o->read_iolog_file)
1186                 td->flags |= TD_F_READ_IOLOG;
1187         if (o->refill_buffers)
1188                 td->flags |= TD_F_REFILL_BUFFERS;
1189         /*
1190          * Always scramble buffers if asked to
1191          */
1192         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1193                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1194         /*
1195          * But also scramble buffers, unless we were explicitly asked
1196          * to zero them.
1197          */
1198         if (o->scramble_buffers && !(o->zero_buffers &&
1199             fio_option_is_set(o, zero_buffers)))
1200                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1201         if (o->verify != VERIFY_NONE)
1202                 td->flags |= TD_F_DO_VERIFY;
1203
1204         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1205                 td->flags |= TD_F_NEED_LOCK;
1206
1207         if (o->mem_type == MEM_CUDA_MALLOC)
1208                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1209
1210         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1211                 if (option_check_rate(td, i)) {
1212                         td->flags |= TD_F_CHECK_RATE;
1213                         break;
1214                 }
1215         }
1216 }
1217
1218 static int setup_random_seeds(struct thread_data *td)
1219 {
1220         unsigned long seed;
1221         unsigned int i;
1222
1223         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1224                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1225                 if (!ret)
1226                         td_fill_rand_seeds(td);
1227                 return ret;
1228         }
1229
1230         seed = td->o.rand_seed;
1231         for (i = 0; i < 4; i++)
1232                 seed *= 0x9e370001UL;
1233
1234         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1235                 td->rand_seeds[i] = seed * td->thread_number + i;
1236                 seed *= 0x9e370001UL;
1237         }
1238
1239         td_fill_rand_seeds(td);
1240         return 0;
1241 }
1242
1243 enum {
1244         FPRE_NONE = 0,
1245         FPRE_JOBNAME,
1246         FPRE_JOBNUM,
1247         FPRE_FILENUM
1248 };
1249
1250 static struct fpre_keyword {
1251         const char *keyword;
1252         size_t strlen;
1253         int key;
1254 } fpre_keywords[] = {
1255         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1256         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1257         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1258         { .keyword = NULL, },
1259         };
1260
1261 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1262                            const char *jobname, int jobnum, int filenum)
1263 {
1264         struct fpre_keyword *f;
1265         char copy[PATH_MAX];
1266         size_t dst_left = PATH_MAX - 1;
1267
1268         if (!o->filename_format || !strlen(o->filename_format)) {
1269                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1270                 return buf;
1271         }
1272
1273         for (f = &fpre_keywords[0]; f->keyword; f++)
1274                 f->strlen = strlen(f->keyword);
1275
1276         buf[buf_size - 1] = '\0';
1277         strncpy(buf, o->filename_format, buf_size - 1);
1278
1279         memset(copy, 0, sizeof(copy));
1280         for (f = &fpre_keywords[0]; f->keyword; f++) {
1281                 do {
1282                         size_t pre_len, post_start = 0;
1283                         char *str, *dst = copy;
1284
1285                         str = strcasestr(buf, f->keyword);
1286                         if (!str)
1287                                 break;
1288
1289                         pre_len = str - buf;
1290                         if (strlen(str) != f->strlen)
1291                                 post_start = pre_len + f->strlen;
1292
1293                         if (pre_len) {
1294                                 strncpy(dst, buf, pre_len);
1295                                 dst += pre_len;
1296                                 dst_left -= pre_len;
1297                         }
1298
1299                         switch (f->key) {
1300                         case FPRE_JOBNAME: {
1301                                 int ret;
1302
1303                                 ret = snprintf(dst, dst_left, "%s", jobname);
1304                                 if (ret < 0)
1305                                         break;
1306                                 else if (ret > dst_left) {
1307                                         log_err("fio: truncated filename\n");
1308                                         dst += dst_left;
1309                                         dst_left = 0;
1310                                 } else {
1311                                         dst += ret;
1312                                         dst_left -= ret;
1313                                 }
1314                                 break;
1315                                 }
1316                         case FPRE_JOBNUM: {
1317                                 int ret;
1318
1319                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1320                                 if (ret < 0)
1321                                         break;
1322                                 else if (ret > dst_left) {
1323                                         log_err("fio: truncated filename\n");
1324                                         dst += dst_left;
1325                                         dst_left = 0;
1326                                 } else {
1327                                         dst += ret;
1328                                         dst_left -= ret;
1329                                 }
1330                                 break;
1331                                 }
1332                         case FPRE_FILENUM: {
1333                                 int ret;
1334
1335                                 ret = snprintf(dst, dst_left, "%d", filenum);
1336                                 if (ret < 0)
1337                                         break;
1338                                 else if (ret > dst_left) {
1339                                         log_err("fio: truncated filename\n");
1340                                         dst += dst_left;
1341                                         dst_left = 0;
1342                                 } else {
1343                                         dst += ret;
1344                                         dst_left -= ret;
1345                                 }
1346                                 break;
1347                                 }
1348                         default:
1349                                 assert(0);
1350                                 break;
1351                         }
1352
1353                         if (post_start)
1354                                 strncpy(dst, buf + post_start, dst_left);
1355
1356                         strncpy(buf, copy, buf_size - 1);
1357                 } while (1);
1358         }
1359
1360         return buf;
1361 }
1362
1363 bool parse_dryrun(void)
1364 {
1365         return dump_cmdline || parse_only;
1366 }
1367
1368 static void gen_log_name(char *name, size_t size, const char *logtype,
1369                          const char *logname, unsigned int num,
1370                          const char *suf, int per_job)
1371 {
1372         if (per_job)
1373                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1374         else
1375                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1376 }
1377
1378 static int check_waitees(char *waitee)
1379 {
1380         struct thread_data *td;
1381         int i, ret = 0;
1382
1383         for_each_td(td, i) {
1384                 if (td->subjob_number)
1385                         continue;
1386
1387                 ret += !strcmp(td->o.name, waitee);
1388         }
1389
1390         return ret;
1391 }
1392
1393 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1394 {
1395         int nw;
1396
1397         if (!o->wait_for)
1398                 return true;
1399
1400         if (!strcmp(jobname, o->wait_for)) {
1401                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1402                                 jobname, o->wait_for);
1403                 return false;
1404         }
1405
1406         if (!(nw = check_waitees(o->wait_for))) {
1407                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1408                 return false;
1409         }
1410
1411         if (nw > 1) {
1412                 log_err("%s: multiple waitees %s found,\n"
1413                         "please avoid duplicates when using wait_for option.\n",
1414                                 jobname, o->wait_for);
1415                 return false;
1416         }
1417
1418         return true;
1419 }
1420
1421 /*
1422  * Treat an empty log file name the same as a one not given
1423  */
1424 static const char *make_log_name(const char *logname, const char *jobname)
1425 {
1426         if (logname && strcmp(logname, ""))
1427                 return logname;
1428
1429         return jobname;
1430 }
1431
1432 /*
1433  * Adds a job to the list of things todo. Sanitizes the various options
1434  * to make sure we don't have conflicts, and initializes various
1435  * members of td.
1436  */
1437 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1438                    int recursed, int client_type)
1439 {
1440         unsigned int i;
1441         char fname[PATH_MAX];
1442         int numjobs, file_alloced;
1443         struct thread_options *o = &td->o;
1444         char logname[PATH_MAX + 32];
1445
1446         /*
1447          * the def_thread is just for options, it's not a real job
1448          */
1449         if (td == &def_thread)
1450                 return 0;
1451
1452         init_flags(td);
1453
1454         /*
1455          * if we are just dumping the output command line, don't add the job
1456          */
1457         if (parse_dryrun()) {
1458                 put_job(td);
1459                 return 0;
1460         }
1461
1462         td->client_type = client_type;
1463
1464         if (profile_td_init(td))
1465                 goto err;
1466
1467         if (ioengine_load(td))
1468                 goto err;
1469
1470         file_alloced = 0;
1471         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1472                 file_alloced = 1;
1473
1474                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1475                         add_file(td, jobname, job_add_num, 0);
1476                 else {
1477                         for (i = 0; i < o->nr_files; i++)
1478                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1479                 }
1480         }
1481
1482         if (setup_random_seeds(td)) {
1483                 td_verror(td, errno, "setup_random_seeds");
1484                 goto err;
1485         }
1486
1487         if (fixup_options(td))
1488                 goto err;
1489
1490         /*
1491          * Belongs to fixup_options, but o->name is not necessarily set as yet
1492          */
1493         if (!wait_for_ok(jobname, o))
1494                 goto err;
1495
1496         flow_init_job(td);
1497
1498         /*
1499          * IO engines only need this for option callbacks, and the address may
1500          * change in subprocesses.
1501          */
1502         if (td->eo)
1503                 *(struct thread_data **)td->eo = NULL;
1504
1505         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1506                 struct fio_file *f;
1507
1508                 for_each_file(td, f, i)
1509                         f->real_file_size = -1ULL;
1510         }
1511
1512         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1513
1514         td->ts.clat_percentiles = o->clat_percentiles;
1515         td->ts.lat_percentiles = o->lat_percentiles;
1516         td->ts.percentile_precision = o->percentile_precision;
1517         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1518         td->ts.sig_figs = o->sig_figs;
1519
1520         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1521                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1522                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1523                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1524                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1525                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1526         }
1527         td->ts.sync_stat.min_val = ULONG_MAX;
1528         td->ddir_seq_nr = o->ddir_seq_nr;
1529
1530         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1531                 prev_group_jobs = 0;
1532                 groupid++;
1533                 if (groupid == INT_MAX) {
1534                         log_err("fio: too many groups defined\n");
1535                         goto err;
1536                 }
1537         }
1538
1539         td->groupid = groupid;
1540         prev_group_jobs++;
1541
1542         if (setup_rate(td))
1543                 goto err;
1544
1545         if (o->write_lat_log) {
1546                 struct log_params p = {
1547                         .td = td,
1548                         .avg_msec = o->log_avg_msec,
1549                         .hist_msec = o->log_hist_msec,
1550                         .hist_coarseness = o->log_hist_coarseness,
1551                         .log_type = IO_LOG_TYPE_LAT,
1552                         .log_offset = o->log_offset,
1553                         .log_gz = o->log_gz,
1554                         .log_gz_store = o->log_gz_store,
1555                 };
1556                 const char *pre = make_log_name(o->lat_log_file, o->name);
1557                 const char *suf;
1558
1559                 if (p.log_gz_store)
1560                         suf = "log.fz";
1561                 else
1562                         suf = "log";
1563
1564                 gen_log_name(logname, sizeof(logname), "lat", pre,
1565                                 td->thread_number, suf, o->per_job_logs);
1566                 setup_log(&td->lat_log, &p, logname);
1567
1568                 gen_log_name(logname, sizeof(logname), "slat", pre,
1569                                 td->thread_number, suf, o->per_job_logs);
1570                 setup_log(&td->slat_log, &p, logname);
1571
1572                 gen_log_name(logname, sizeof(logname), "clat", pre,
1573                                 td->thread_number, suf, o->per_job_logs);
1574                 setup_log(&td->clat_log, &p, logname);
1575
1576         }
1577
1578         if (o->write_hist_log) {
1579                 struct log_params p = {
1580                         .td = td,
1581                         .avg_msec = o->log_avg_msec,
1582                         .hist_msec = o->log_hist_msec,
1583                         .hist_coarseness = o->log_hist_coarseness,
1584                         .log_type = IO_LOG_TYPE_HIST,
1585                         .log_offset = o->log_offset,
1586                         .log_gz = o->log_gz,
1587                         .log_gz_store = o->log_gz_store,
1588                 };
1589                 const char *pre = make_log_name(o->hist_log_file, o->name);
1590                 const char *suf;
1591
1592 #ifndef CONFIG_ZLIB
1593                 if (td->client_type) {
1594                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1595                         goto err;
1596                 }
1597 #endif
1598
1599                 if (p.log_gz_store)
1600                         suf = "log.fz";
1601                 else
1602                         suf = "log";
1603
1604                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1605                                 td->thread_number, suf, o->per_job_logs);
1606                 setup_log(&td->clat_hist_log, &p, logname);
1607         }
1608
1609         if (o->write_bw_log) {
1610                 struct log_params p = {
1611                         .td = td,
1612                         .avg_msec = o->log_avg_msec,
1613                         .hist_msec = o->log_hist_msec,
1614                         .hist_coarseness = o->log_hist_coarseness,
1615                         .log_type = IO_LOG_TYPE_BW,
1616                         .log_offset = o->log_offset,
1617                         .log_gz = o->log_gz,
1618                         .log_gz_store = o->log_gz_store,
1619                 };
1620                 const char *pre = make_log_name(o->bw_log_file, o->name);
1621                 const char *suf;
1622
1623                 if (fio_option_is_set(o, bw_avg_time))
1624                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1625                 else
1626                         o->bw_avg_time = p.avg_msec;
1627
1628                 p.hist_msec = o->log_hist_msec;
1629                 p.hist_coarseness = o->log_hist_coarseness;
1630
1631                 if (p.log_gz_store)
1632                         suf = "log.fz";
1633                 else
1634                         suf = "log";
1635
1636                 gen_log_name(logname, sizeof(logname), "bw", pre,
1637                                 td->thread_number, suf, o->per_job_logs);
1638                 setup_log(&td->bw_log, &p, logname);
1639         }
1640         if (o->write_iops_log) {
1641                 struct log_params p = {
1642                         .td = td,
1643                         .avg_msec = o->log_avg_msec,
1644                         .hist_msec = o->log_hist_msec,
1645                         .hist_coarseness = o->log_hist_coarseness,
1646                         .log_type = IO_LOG_TYPE_IOPS,
1647                         .log_offset = o->log_offset,
1648                         .log_gz = o->log_gz,
1649                         .log_gz_store = o->log_gz_store,
1650                 };
1651                 const char *pre = make_log_name(o->iops_log_file, o->name);
1652                 const char *suf;
1653
1654                 if (fio_option_is_set(o, iops_avg_time))
1655                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1656                 else
1657                         o->iops_avg_time = p.avg_msec;
1658
1659                 p.hist_msec = o->log_hist_msec;
1660                 p.hist_coarseness = o->log_hist_coarseness;
1661
1662                 if (p.log_gz_store)
1663                         suf = "log.fz";
1664                 else
1665                         suf = "log";
1666
1667                 gen_log_name(logname, sizeof(logname), "iops", pre,
1668                                 td->thread_number, suf, o->per_job_logs);
1669                 setup_log(&td->iops_log, &p, logname);
1670         }
1671
1672         if (!o->name)
1673                 o->name = strdup(jobname);
1674
1675         if (output_format & FIO_OUTPUT_NORMAL) {
1676                 if (!job_add_num) {
1677                         if (is_backend && !recursed)
1678                                 fio_server_send_add_job(td);
1679
1680                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1681                                 char *c1, *c2, *c3, *c4;
1682                                 char *c5 = NULL, *c6 = NULL;
1683                                 int i2p = is_power_of_2(o->kb_base);
1684                                 struct buf_output out;
1685
1686                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1687                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1688                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1689                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1690
1691                                 if (!o->bs_is_seq_rand) {
1692                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1693                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1694                                 }
1695
1696                                 buf_output_init(&out);
1697                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1698                                                         td->groupid,
1699                                                         ddir_str(o->td_ddir));
1700
1701                                 if (o->bs_is_seq_rand)
1702                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1703                                                         c1, c2, c3, c4);
1704                                 else
1705                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1706                                                         c1, c2, c3, c4, c5, c6);
1707
1708                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1709                                                 td->io_ops->name, o->iodepth);
1710                                 log_info_buf(out.buf, out.buflen);
1711                                 buf_output_free(&out);
1712
1713                                 free(c1);
1714                                 free(c2);
1715                                 free(c3);
1716                                 free(c4);
1717                                 free(c5);
1718                                 free(c6);
1719                         }
1720                 } else if (job_add_num == 1)
1721                         log_info("...\n");
1722         }
1723
1724         if (td_steadystate_init(td))
1725                 goto err;
1726
1727         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1728                 goto err;
1729
1730         if (merge_blktrace_only) {
1731                 put_job(td);
1732                 return 0;
1733         }
1734
1735         /*
1736          * recurse add identical jobs, clear numjobs and stonewall options
1737          * as they don't apply to sub-jobs
1738          */
1739         numjobs = o->numjobs;
1740         while (--numjobs) {
1741                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1742
1743                 if (!td_new)
1744                         goto err;
1745
1746                 td_new->o.numjobs = 1;
1747                 td_new->o.stonewall = 0;
1748                 td_new->o.new_group = 0;
1749                 td_new->subjob_number = numjobs;
1750                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1751                 td_new->o.ss_limit = o->ss_limit;
1752
1753                 if (file_alloced) {
1754                         if (td_new->files) {
1755                                 struct fio_file *f;
1756                                 for_each_file(td_new, f, i) {
1757                                         if (f->file_name)
1758                                                 sfree(f->file_name);
1759                                         sfree(f);
1760                                 }
1761                                 free(td_new->files);
1762                                 td_new->files = NULL;
1763                         }
1764                         td_new->files_index = 0;
1765                         td_new->files_size = 0;
1766                         if (td_new->o.filename) {
1767                                 free(td_new->o.filename);
1768                                 td_new->o.filename = NULL;
1769                         }
1770                 }
1771
1772                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1773                         goto err;
1774         }
1775
1776         return 0;
1777 err:
1778         put_job(td);
1779         return -1;
1780 }
1781
1782 /*
1783  * Parse as if 'o' was a command line
1784  */
1785 void add_job_opts(const char **o, int client_type)
1786 {
1787         struct thread_data *td, *td_parent;
1788         int i, in_global = 1;
1789         char jobname[32];
1790
1791         i = 0;
1792         td_parent = td = NULL;
1793         while (o[i]) {
1794                 if (!strncmp(o[i], "name", 4)) {
1795                         in_global = 0;
1796                         if (td)
1797                                 add_job(td, jobname, 0, 0, client_type);
1798                         td = NULL;
1799                         sprintf(jobname, "%s", o[i] + 5);
1800                 }
1801                 if (in_global && !td_parent)
1802                         td_parent = get_new_job(true, &def_thread, false, jobname);
1803                 else if (!in_global && !td) {
1804                         if (!td_parent)
1805                                 td_parent = &def_thread;
1806                         td = get_new_job(false, td_parent, false, jobname);
1807                 }
1808                 if (in_global)
1809                         fio_options_parse(td_parent, (char **) &o[i], 1);
1810                 else
1811                         fio_options_parse(td, (char **) &o[i], 1);
1812                 i++;
1813         }
1814
1815         if (td)
1816                 add_job(td, jobname, 0, 0, client_type);
1817 }
1818
1819 static int skip_this_section(const char *name)
1820 {
1821         int i;
1822
1823         if (!nr_job_sections)
1824                 return 0;
1825         if (!strncmp(name, "global", 6))
1826                 return 0;
1827
1828         for (i = 0; i < nr_job_sections; i++)
1829                 if (!strcmp(job_sections[i], name))
1830                         return 0;
1831
1832         return 1;
1833 }
1834
1835 static int is_empty_or_comment(char *line)
1836 {
1837         unsigned int i;
1838
1839         for (i = 0; i < strlen(line); i++) {
1840                 if (line[i] == ';')
1841                         return 1;
1842                 if (line[i] == '#')
1843                         return 1;
1844                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1845                         return 0;
1846         }
1847
1848         return 1;
1849 }
1850
1851 /*
1852  * This is our [ini] type file parser.
1853  */
1854 static int __parse_jobs_ini(struct thread_data *td,
1855                 char *file, int is_buf, int stonewall_flag, int type,
1856                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1857 {
1858         bool global = false;
1859         char *string;
1860         FILE *f;
1861         char *p;
1862         int ret = 0, stonewall;
1863         int first_sect = 1;
1864         int skip_fgets = 0;
1865         int inside_skip = 0;
1866         char **opts;
1867         int i, alloc_opts, num_opts;
1868
1869         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1870         assert(td || !nested);
1871
1872         if (is_buf)
1873                 f = NULL;
1874         else {
1875                 if (!strcmp(file, "-"))
1876                         f = stdin;
1877                 else
1878                         f = fopen(file, "r");
1879
1880                 if (!f) {
1881                         int __err = errno;
1882
1883                         log_err("fio: unable to open '%s' job file\n", file);
1884                         if (td)
1885                                 td_verror(td, __err, "job file open");
1886                         return 1;
1887                 }
1888         }
1889
1890         string = malloc(4096);
1891
1892         /*
1893          * it's really 256 + small bit, 280 should suffice
1894          */
1895         if (!nested) {
1896                 name = malloc(280);
1897                 memset(name, 0, 280);
1898         }
1899
1900         opts = NULL;
1901         if (nested && popts) {
1902                 opts = *popts;
1903                 alloc_opts = *aopts;
1904                 num_opts = *nopts;
1905         }
1906
1907         if (!opts) {
1908                 alloc_opts = 8;
1909                 opts = malloc(sizeof(char *) * alloc_opts);
1910                 num_opts = 0;
1911         }
1912
1913         stonewall = stonewall_flag;
1914         do {
1915                 /*
1916                  * if skip_fgets is set, we already have loaded a line we
1917                  * haven't handled.
1918                  */
1919                 if (!skip_fgets) {
1920                         if (is_buf)
1921                                 p = strsep(&file, "\n");
1922                         else
1923                                 p = fgets(string, 4096, f);
1924                         if (!p)
1925                                 break;
1926                 }
1927
1928                 skip_fgets = 0;
1929                 strip_blank_front(&p);
1930                 strip_blank_end(p);
1931
1932                 dprint(FD_PARSE, "%s\n", p);
1933                 if (is_empty_or_comment(p))
1934                         continue;
1935
1936                 if (!nested) {
1937                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1938                                 if (inside_skip)
1939                                         continue;
1940
1941                                 log_err("fio: option <%s> outside of "
1942                                         "[] job section\n", p);
1943                                 ret = 1;
1944                                 break;
1945                         }
1946
1947                         name[strlen(name) - 1] = '\0';
1948
1949                         if (skip_this_section(name)) {
1950                                 inside_skip = 1;
1951                                 continue;
1952                         } else
1953                                 inside_skip = 0;
1954
1955                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1956
1957                         global = !strncmp(name, "global", 6);
1958
1959                         if (dump_cmdline) {
1960                                 if (first_sect)
1961                                         log_info("fio ");
1962                                 if (!global)
1963                                         log_info("--name=%s ", name);
1964                                 first_sect = 0;
1965                         }
1966
1967                         td = get_new_job(global, &def_thread, false, name);
1968                         if (!td) {
1969                                 ret = 1;
1970                                 break;
1971                         }
1972
1973                         /*
1974                          * Separate multiple job files by a stonewall
1975                          */
1976                         if (!global && stonewall) {
1977                                 td->o.stonewall = stonewall;
1978                                 stonewall = 0;
1979                         }
1980
1981                         num_opts = 0;
1982                         memset(opts, 0, alloc_opts * sizeof(char *));
1983                 }
1984                 else
1985                         skip_fgets = 1;
1986
1987                 while (1) {
1988                         if (!skip_fgets) {
1989                                 if (is_buf)
1990                                         p = strsep(&file, "\n");
1991                                 else
1992                                         p = fgets(string, 4096, f);
1993                                 if (!p)
1994                                         break;
1995                                 dprint(FD_PARSE, "%s", p);
1996                         }
1997                         else
1998                                 skip_fgets = 0;
1999
2000                         if (is_empty_or_comment(p))
2001                                 continue;
2002
2003                         strip_blank_front(&p);
2004
2005                         /*
2006                          * new section, break out and make sure we don't
2007                          * fgets() a new line at the top.
2008                          */
2009                         if (p[0] == '[') {
2010                                 if (nested) {
2011                                         log_err("No new sections in included files\n");
2012                                         ret = 1;
2013                                         goto out;
2014                                 }
2015
2016                                 skip_fgets = 1;
2017                                 break;
2018                         }
2019
2020                         strip_blank_end(p);
2021
2022                         if (!strncmp(p, "include", strlen("include"))) {
2023                                 char *filename = p + strlen("include") + 1,
2024                                         *ts, *full_fn = NULL;
2025
2026                                 /*
2027                                  * Allow for the include filename
2028                                  * specification to be relative.
2029                                  */
2030                                 if (access(filename, F_OK) &&
2031                                     (ts = strrchr(file, '/'))) {
2032                                         int len = ts - file +
2033                                                 strlen(filename) + 2;
2034
2035                                         if (!(full_fn = calloc(1, len))) {
2036                                                 ret = ENOMEM;
2037                                                 break;
2038                                         }
2039
2040                                         strncpy(full_fn,
2041                                                 file, (ts - file) + 1);
2042                                         strncpy(full_fn + (ts - file) + 1,
2043                                                 filename, strlen(filename));
2044                                         full_fn[len - 1] = 0;
2045                                         filename = full_fn;
2046                                 }
2047
2048                                 ret = __parse_jobs_ini(td, filename, is_buf,
2049                                                        stonewall_flag, type, 1,
2050                                                        name, &opts,
2051                                                        &alloc_opts, &num_opts);
2052
2053                                 if (ret) {
2054                                         log_err("Error %d while parsing "
2055                                                 "include file %s\n",
2056                                                 ret, filename);
2057                                 }
2058
2059                                 if (full_fn)
2060                                         free(full_fn);
2061
2062                                 if (ret)
2063                                         break;
2064
2065                                 continue;
2066                         }
2067
2068                         if (num_opts == alloc_opts) {
2069                                 alloc_opts <<= 1;
2070                                 opts = realloc(opts,
2071                                                 alloc_opts * sizeof(char *));
2072                         }
2073
2074                         opts[num_opts] = strdup(p);
2075                         num_opts++;
2076                 }
2077
2078                 if (nested) {
2079                         *popts = opts;
2080                         *aopts = alloc_opts;
2081                         *nopts = num_opts;
2082                         goto out;
2083                 }
2084
2085                 ret = fio_options_parse(td, opts, num_opts);
2086                 if (!ret) {
2087                         if (dump_cmdline)
2088                                 dump_opt_list(td);
2089
2090                         ret = add_job(td, name, 0, 0, type);
2091                 } else {
2092                         log_err("fio: job %s dropped\n", name);
2093                         put_job(td);
2094                 }
2095
2096                 for (i = 0; i < num_opts; i++)
2097                         free(opts[i]);
2098                 num_opts = 0;
2099         } while (!ret);
2100
2101         if (dump_cmdline)
2102                 log_info("\n");
2103
2104         i = 0;
2105         while (i < nr_job_sections) {
2106                 free(job_sections[i]);
2107                 i++;
2108         }
2109
2110         free(opts);
2111 out:
2112         free(string);
2113         if (!nested)
2114                 free(name);
2115         if (!is_buf && f != stdin)
2116                 fclose(f);
2117         return ret;
2118 }
2119
2120 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2121 {
2122         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2123                         0, NULL, NULL, NULL, NULL);
2124 }
2125
2126 static int fill_def_thread(void)
2127 {
2128         memset(&def_thread, 0, sizeof(def_thread));
2129         INIT_FLIST_HEAD(&def_thread.opt_list);
2130
2131         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2132         def_thread.o.error_dump = 1;
2133
2134         /*
2135          * fill default options
2136          */
2137         fio_fill_default_options(&def_thread);
2138         return 0;
2139 }
2140
2141 static void show_debug_categories(void)
2142 {
2143 #ifdef FIO_INC_DEBUG
2144         const struct debug_level *dl = &debug_levels[0];
2145         int curlen, first = 1;
2146
2147         curlen = 0;
2148         while (dl->name) {
2149                 int has_next = (dl + 1)->name != NULL;
2150
2151                 if (first || curlen + strlen(dl->name) >= 80) {
2152                         if (!first) {
2153                                 printf("\n");
2154                                 curlen = 0;
2155                         }
2156                         curlen += printf("\t\t\t%s", dl->name);
2157                         curlen += 3 * (8 - 1);
2158                         if (has_next)
2159                                 curlen += printf(",");
2160                 } else {
2161                         curlen += printf("%s", dl->name);
2162                         if (has_next)
2163                                 curlen += printf(",");
2164                 }
2165                 dl++;
2166                 first = 0;
2167         }
2168         printf("\n");
2169 #endif
2170 }
2171
2172 /*
2173  * Following options aren't printed by usage().
2174  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2175  * --latency-log - Deprecated option.
2176  */
2177 static void usage(const char *name)
2178 {
2179         printf("%s\n", fio_version_string);
2180         printf("%s [options] [job options] <job file(s)>\n", name);
2181         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2182         show_debug_categories();
2183         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2184         printf("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2185         printf("  --output\t\tWrite output to file\n");
2186         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2187         printf("  --minimal\t\tMinimal (terse) output\n");
2188         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2189         printf("  --terse-version=type\tSet terse version output format"
2190                 " (default 3, or 2 or 4)\n");
2191         printf("  --version\t\tPrint version info and exit\n");
2192         printf("  --help\t\tPrint this page\n");
2193         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2194         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2195         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2196                 " them\n");
2197         printf("  --enghelp=engine\tPrint ioengine help, or list"
2198                 " available ioengines\n");
2199         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2200                 " cmd\n");
2201         printf("  --showcmd\t\tTurn a job file into command line options\n");
2202         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2203         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2204         printf("  --eta-newline=t\tForce a new line for every 't'");
2205         printf(" period passed\n");
2206         printf("  --status-interval=t\tForce full status dump every");
2207         printf(" 't' period passed\n");
2208         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2209                 " writes\n");
2210         printf("  --section=name\tOnly run specified section in job file,"
2211                 " multiple sections can be specified\n");
2212         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2213                 " (def 16384)\n");
2214         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2215         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2216         printf("  --server=args\t\tStart a backend fio server\n");
2217         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2218         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2219         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2220         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2221                 "\t\t\t(option=system,percpu) or run unit work\n"
2222                 "\t\t\tcalibration only (option=calibrate)\n");
2223 #ifdef CONFIG_ZLIB
2224         printf("  --inflate-log=log\tInflate and output compressed log\n");
2225 #endif
2226         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2227         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2228         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2229         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2230         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2231         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2232 }
2233
2234 #ifdef FIO_INC_DEBUG
2235 const struct debug_level debug_levels[] = {
2236         { .name = "process",
2237           .help = "Process creation/exit logging",
2238           .shift = FD_PROCESS,
2239         },
2240         { .name = "file",
2241           .help = "File related action logging",
2242           .shift = FD_FILE,
2243         },
2244         { .name = "io",
2245           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2246           .shift = FD_IO,
2247         },
2248         { .name = "mem",
2249           .help = "Memory allocation/freeing logging",
2250           .shift = FD_MEM,
2251         },
2252         { .name = "blktrace",
2253           .help = "blktrace action logging",
2254           .shift = FD_BLKTRACE,
2255         },
2256         { .name = "verify",
2257           .help = "IO verification action logging",
2258           .shift = FD_VERIFY,
2259         },
2260         { .name = "random",
2261           .help = "Random generation logging",
2262           .shift = FD_RANDOM,
2263         },
2264         { .name = "parse",
2265           .help = "Parser logging",
2266           .shift = FD_PARSE,
2267         },
2268         { .name = "diskutil",
2269           .help = "Disk utility logging actions",
2270           .shift = FD_DISKUTIL,
2271         },
2272         { .name = "job",
2273           .help = "Logging related to creating/destroying jobs",
2274           .shift = FD_JOB,
2275         },
2276         { .name = "mutex",
2277           .help = "Mutex logging",
2278           .shift = FD_MUTEX
2279         },
2280         { .name = "profile",
2281           .help = "Logging related to profiles",
2282           .shift = FD_PROFILE,
2283         },
2284         { .name = "time",
2285           .help = "Logging related to time keeping functions",
2286           .shift = FD_TIME,
2287         },
2288         { .name = "net",
2289           .help = "Network logging",
2290           .shift = FD_NET,
2291         },
2292         { .name = "rate",
2293           .help = "Rate logging",
2294           .shift = FD_RATE,
2295         },
2296         { .name = "compress",
2297           .help = "Log compression logging",
2298           .shift = FD_COMPRESS,
2299         },
2300         { .name = "steadystate",
2301           .help = "Steady state detection logging",
2302           .shift = FD_STEADYSTATE,
2303         },
2304         { .name = "helperthread",
2305           .help = "Helper thread logging",
2306           .shift = FD_HELPERTHREAD,
2307         },
2308         { .name = "zbd",
2309           .help = "Zoned Block Device logging",
2310           .shift = FD_ZBD,
2311         },
2312         { .name = NULL, },
2313 };
2314
2315 static int set_debug(const char *string)
2316 {
2317         const struct debug_level *dl;
2318         char *p = (char *) string;
2319         char *opt;
2320         int i;
2321
2322         if (!string)
2323                 return 0;
2324
2325         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2326                 log_info("fio: dumping debug options:");
2327                 for (i = 0; debug_levels[i].name; i++) {
2328                         dl = &debug_levels[i];
2329                         log_info("%s,", dl->name);
2330                 }
2331                 log_info("all\n");
2332                 return 1;
2333         }
2334
2335         while ((opt = strsep(&p, ",")) != NULL) {
2336                 int found = 0;
2337
2338                 if (!strncmp(opt, "all", 3)) {
2339                         log_info("fio: set all debug options\n");
2340                         fio_debug = ~0UL;
2341                         continue;
2342                 }
2343
2344                 for (i = 0; debug_levels[i].name; i++) {
2345                         dl = &debug_levels[i];
2346                         found = !strncmp(opt, dl->name, strlen(dl->name));
2347                         if (!found)
2348                                 continue;
2349
2350                         if (dl->shift == FD_JOB) {
2351                                 opt = strchr(opt, ':');
2352                                 if (!opt) {
2353                                         log_err("fio: missing job number\n");
2354                                         break;
2355                                 }
2356                                 opt++;
2357                                 fio_debug_jobno = atoi(opt);
2358                                 log_info("fio: set debug jobno %d\n",
2359                                                         fio_debug_jobno);
2360                         } else {
2361                                 log_info("fio: set debug option %s\n", opt);
2362                                 fio_debug |= (1UL << dl->shift);
2363                         }
2364                         break;
2365                 }
2366
2367                 if (!found)
2368                         log_err("fio: debug mask %s not found\n", opt);
2369         }
2370         return 0;
2371 }
2372 #else
2373 static int set_debug(const char *string)
2374 {
2375         log_err("fio: debug tracing not included in build\n");
2376         return 1;
2377 }
2378 #endif
2379
2380 static void fio_options_fill_optstring(void)
2381 {
2382         char *ostr = cmd_optstr;
2383         int i, c;
2384
2385         c = i = 0;
2386         while (l_opts[i].name) {
2387                 ostr[c++] = l_opts[i].val;
2388                 if (l_opts[i].has_arg == required_argument)
2389                         ostr[c++] = ':';
2390                 else if (l_opts[i].has_arg == optional_argument) {
2391                         ostr[c++] = ':';
2392                         ostr[c++] = ':';
2393                 }
2394                 i++;
2395         }
2396         ostr[c] = '\0';
2397 }
2398
2399 static int client_flag_set(char c)
2400 {
2401         int i;
2402
2403         i = 0;
2404         while (l_opts[i].name) {
2405                 int val = l_opts[i].val;
2406
2407                 if (c == (val & 0xff))
2408                         return (val & FIO_CLIENT_FLAG);
2409
2410                 i++;
2411         }
2412
2413         return 0;
2414 }
2415
2416 static void parse_cmd_client(void *client, char *opt)
2417 {
2418         fio_client_add_cmd_option(client, opt);
2419 }
2420
2421 static void show_closest_option(const char *name)
2422 {
2423         int best_option, best_distance;
2424         int i, distance;
2425
2426         while (*name == '-')
2427                 name++;
2428
2429         best_option = -1;
2430         best_distance = INT_MAX;
2431         i = 0;
2432         while (l_opts[i].name) {
2433                 distance = string_distance(name, l_opts[i].name);
2434                 if (distance < best_distance) {
2435                         best_distance = distance;
2436                         best_option = i;
2437                 }
2438                 i++;
2439         }
2440
2441         if (best_option != -1 && string_distance_ok(name, best_distance))
2442                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2443 }
2444
2445 static int parse_output_format(const char *optarg)
2446 {
2447         char *p, *orig, *opt;
2448         int ret = 0;
2449
2450         p = orig = strdup(optarg);
2451
2452         output_format = 0;
2453
2454         while ((opt = strsep(&p, ",")) != NULL) {
2455                 if (!strcmp(opt, "minimal") ||
2456                     !strcmp(opt, "terse") ||
2457                     !strcmp(opt, "csv"))
2458                         output_format |= FIO_OUTPUT_TERSE;
2459                 else if (!strcmp(opt, "json"))
2460                         output_format |= FIO_OUTPUT_JSON;
2461                 else if (!strcmp(opt, "json+"))
2462                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2463                 else if (!strcmp(opt, "normal"))
2464                         output_format |= FIO_OUTPUT_NORMAL;
2465                 else {
2466                         log_err("fio: invalid output format %s\n", opt);
2467                         ret = 1;
2468                         break;
2469                 }
2470         }
2471
2472         free(orig);
2473         return ret;
2474 }
2475
2476 int parse_cmd_line(int argc, char *argv[], int client_type)
2477 {
2478         struct thread_data *td = NULL;
2479         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2480         char *ostr = cmd_optstr;
2481         char *pid_file = NULL;
2482         void *cur_client = NULL;
2483         bool backend = false;
2484
2485         /*
2486          * Reset optind handling, since we may call this multiple times
2487          * for the backend.
2488          */
2489         optind = 1;
2490
2491         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2492                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2493                         parse_cmd_client(cur_client, argv[optind - 1]);
2494                         c &= ~FIO_CLIENT_FLAG;
2495                 }
2496
2497                 switch (c) {
2498                 case 'a':
2499                         smalloc_pool_size = atoi(optarg);
2500                         smalloc_pool_size <<= 10;
2501                         sinit();
2502                         break;
2503                 case 'l':
2504                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2505                         do_exit++;
2506                         exit_val = 1;
2507                         break;
2508                 case 'b':
2509                         write_bw_log = true;
2510                         break;
2511                 case 'o': {
2512                         FILE *tmp;
2513
2514                         if (f_out && f_out != stdout)
2515                                 fclose(f_out);
2516
2517                         tmp = fopen(optarg, "w+");
2518                         if (!tmp) {
2519                                 log_err("fio: output file open error: %s\n", strerror(errno));
2520                                 exit_val = 1;
2521                                 do_exit++;
2522                                 break;
2523                         }
2524                         f_err = f_out = tmp;
2525                         break;
2526                         }
2527                 case 'm':
2528                         output_format = FIO_OUTPUT_TERSE;
2529                         break;
2530                 case 'F':
2531                         if (parse_output_format(optarg)) {
2532                                 log_err("fio: failed parsing output-format\n");
2533                                 exit_val = 1;
2534                                 do_exit++;
2535                                 break;
2536                         }
2537                         break;
2538                 case 'f':
2539                         output_format |= FIO_OUTPUT_TERSE;
2540                         break;
2541                 case 'h':
2542                         did_arg = true;
2543                         if (!cur_client) {
2544                                 usage(argv[0]);
2545                                 do_exit++;
2546                         }
2547                         break;
2548                 case 'c':
2549                         did_arg = true;
2550                         if (!cur_client) {
2551                                 fio_show_option_help(optarg);
2552                                 do_exit++;
2553                         }
2554                         break;
2555                 case 'i':
2556                         did_arg = true;
2557                         if (!cur_client) {
2558                                 fio_show_ioengine_help(optarg);
2559                                 do_exit++;
2560                         }
2561                         break;
2562                 case 's':
2563                         did_arg = true;
2564                         dump_cmdline = true;
2565                         break;
2566                 case 'r':
2567                         read_only = 1;
2568                         break;
2569                 case 'v':
2570                         did_arg = true;
2571                         if (!cur_client) {
2572                                 log_info("%s\n", fio_version_string);
2573                                 do_exit++;
2574                         }
2575                         break;
2576                 case 'V':
2577                         terse_version = atoi(optarg);
2578                         if (!(terse_version >= 2 && terse_version <= 5)) {
2579                                 log_err("fio: bad terse version format\n");
2580                                 exit_val = 1;
2581                                 do_exit++;
2582                         }
2583                         break;
2584                 case 'e':
2585                         if (!strcmp("always", optarg))
2586                                 eta_print = FIO_ETA_ALWAYS;
2587                         else if (!strcmp("never", optarg))
2588                                 eta_print = FIO_ETA_NEVER;
2589                         break;
2590                 case 'E': {
2591                         long long t = 0;
2592
2593                         if (check_str_time(optarg, &t, 1)) {
2594                                 log_err("fio: failed parsing eta time %s\n", optarg);
2595                                 exit_val = 1;
2596                                 do_exit++;
2597                                 break;
2598                         }
2599                         eta_new_line = t / 1000;
2600                         if (!eta_new_line) {
2601                                 log_err("fio: eta new line time too short\n");
2602                                 exit_val = 1;
2603                                 do_exit++;
2604                         }
2605                         break;
2606                         }
2607                 case 'O': {
2608                         long long t = 0;
2609
2610                         if (check_str_time(optarg, &t, 1)) {
2611                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2612                                 exit_val = 1;
2613                                 do_exit++;
2614                                 break;
2615                         }
2616                         eta_interval_msec = t / 1000;
2617                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2618                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2619                                 exit_val = 1;
2620                                 do_exit++;
2621                         }
2622                         break;
2623                         }
2624                 case 'd':
2625                         if (set_debug(optarg))
2626                                 do_exit++;
2627                         break;
2628                 case 'P':
2629                         did_arg = true;
2630                         parse_only = true;
2631                         break;
2632                 case 'x': {
2633                         size_t new_size;
2634
2635                         if (!strcmp(optarg, "global")) {
2636                                 log_err("fio: can't use global as only "
2637                                         "section\n");
2638                                 do_exit++;
2639                                 exit_val = 1;
2640                                 break;
2641                         }
2642                         new_size = (nr_job_sections + 1) * sizeof(char *);
2643                         job_sections = realloc(job_sections, new_size);
2644                         job_sections[nr_job_sections] = strdup(optarg);
2645                         nr_job_sections++;
2646                         break;
2647                         }
2648 #ifdef CONFIG_ZLIB
2649                 case 'X':
2650                         exit_val = iolog_file_inflate(optarg);
2651                         did_arg = true;
2652                         do_exit++;
2653                         break;
2654 #endif
2655                 case 'p':
2656                         did_arg = true;
2657                         if (exec_profile)
2658                                 free(exec_profile);
2659                         exec_profile = strdup(optarg);
2660                         break;
2661                 case FIO_GETOPT_JOB: {
2662                         const char *opt = l_opts[lidx].name;
2663                         char *val = optarg;
2664
2665                         if (!strncmp(opt, "name", 4) && td) {
2666                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2667                                 if (ret)
2668                                         goto out_free;
2669                                 td = NULL;
2670                                 did_arg = true;
2671                         }
2672                         if (!td) {
2673                                 int is_section = !strncmp(opt, "name", 4);
2674                                 int global = 0;
2675
2676                                 if (!is_section || !strncmp(val, "global", 6))
2677                                         global = 1;
2678
2679                                 if (is_section && skip_this_section(val))
2680                                         continue;
2681
2682                                 td = get_new_job(global, &def_thread, true, NULL);
2683                                 if (!td || ioengine_load(td)) {
2684                                         if (td) {
2685                                                 put_job(td);
2686                                                 td = NULL;
2687                                         }
2688                                         do_exit++;
2689                                         exit_val = 1;
2690                                         break;
2691                                 }
2692                                 fio_options_set_ioengine_opts(l_opts, td);
2693                         }
2694
2695                         if ((!val || !strlen(val)) &&
2696                             l_opts[lidx].has_arg == required_argument) {
2697                                 log_err("fio: option %s requires an argument\n", opt);
2698                                 ret = 1;
2699                         } else
2700                                 ret = fio_cmd_option_parse(td, opt, val);
2701
2702                         if (ret) {
2703                                 if (td) {
2704                                         put_job(td);
2705                                         td = NULL;
2706                                 }
2707                                 do_exit++;
2708                                 exit_val = 1;
2709                         }
2710
2711                         if (!ret && !strcmp(opt, "ioengine")) {
2712                                 if (ioengine_load(td)) {
2713                                         put_job(td);
2714                                         td = NULL;
2715                                         do_exit++;
2716                                         exit_val = 1;
2717                                         break;
2718                                 }
2719                                 fio_options_set_ioengine_opts(l_opts, td);
2720                         }
2721                         break;
2722                 }
2723                 case FIO_GETOPT_IOENGINE: {
2724                         const char *opt = l_opts[lidx].name;
2725                         char *val = optarg;
2726
2727                         if (!td)
2728                                 break;
2729
2730                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2731                         break;
2732                 }
2733                 case 'w':
2734                         warnings_fatal = 1;
2735                         break;
2736                 case 'j':
2737                         max_jobs = atoi(optarg);
2738                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2739                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2740                                 do_exit++;
2741                                 exit_val = 1;
2742                         }
2743                         break;
2744                 case 'S':
2745                         did_arg = true;
2746 #ifndef CONFIG_NO_SHM
2747                         if (nr_clients) {
2748                                 log_err("fio: can't be both client and server\n");
2749                                 do_exit++;
2750                                 exit_val = 1;
2751                                 break;
2752                         }
2753                         if (optarg)
2754                                 fio_server_set_arg(optarg);
2755                         is_backend = true;
2756                         backend = true;
2757 #else
2758                         log_err("fio: client/server requires SHM support\n");
2759                         do_exit++;
2760                         exit_val = 1;
2761 #endif
2762                         break;
2763                 case 'D':
2764                         if (pid_file)
2765                                 free(pid_file);
2766                         pid_file = strdup(optarg);
2767                         break;
2768                 case 'I':
2769                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2770                                 /* exit on error and calibration only */
2771                                 did_arg = true;
2772                                 do_exit++;
2773                                 if (ret == -1)
2774                                         exit_val = 1;
2775                         }
2776                         break;
2777                 case 'C':
2778                         did_arg = true;
2779                         if (is_backend) {
2780                                 log_err("fio: can't be both client and server\n");
2781                                 do_exit++;
2782                                 exit_val = 1;
2783                                 break;
2784                         }
2785                         /* if --client parameter contains a pathname */
2786                         if (0 == access(optarg, R_OK)) {
2787                                 /* file contains a list of host addrs or names */
2788                                 char hostaddr[PATH_MAX] = {0};
2789                                 char formatstr[8];
2790                                 FILE * hostf = fopen(optarg, "r");
2791                                 if (!hostf) {
2792                                         log_err("fio: could not open client list file %s for read\n", optarg);
2793                                         do_exit++;
2794                                         exit_val = 1;
2795                                         break;
2796                                 }
2797                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2798                                 /*
2799                                  * read at most PATH_MAX-1 chars from each
2800                                  * record in this file
2801                                  */
2802                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2803                                         /* expect EVERY host in file to be valid */
2804                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2805                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2806                                                 do_exit++;
2807                                                 exit_val = 1;
2808                                                 break;
2809                                         }
2810                                 }
2811                                 fclose(hostf);
2812                                 break; /* no possibility of job file for "this client only" */
2813                         }
2814                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2815                                 log_err("fio: failed adding client %s\n", optarg);
2816                                 do_exit++;
2817                                 exit_val = 1;
2818                                 break;
2819                         }
2820                         /*
2821                          * If the next argument exists and isn't an option,
2822                          * assume it's a job file for this client only.
2823                          */
2824                         while (optind < argc) {
2825                                 if (!strncmp(argv[optind], "--", 2) ||
2826                                     !strncmp(argv[optind], "-", 1))
2827                                         break;
2828
2829                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2830                                         break;
2831                                 optind++;
2832                         }
2833                         break;
2834                 case 'R':
2835                         did_arg = true;
2836                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2837                                 do_exit++;
2838                                 exit_val = 1;
2839                         }
2840                         break;
2841                 case 'T':
2842                         did_arg = true;
2843                         do_exit++;
2844                         exit_val = fio_monotonic_clocktest(1);
2845                         break;
2846                 case 'G':
2847                         did_arg = true;
2848                         do_exit++;
2849                         exit_val = fio_crctest(optarg);
2850                         break;
2851                 case 'M':
2852                         did_arg = true;
2853                         do_exit++;
2854                         exit_val = fio_memcpy_test(optarg);
2855                         break;
2856                 case 'L': {
2857                         long long val;
2858
2859                         if (check_str_time(optarg, &val, 1)) {
2860                                 log_err("fio: failed parsing time %s\n", optarg);
2861                                 do_exit++;
2862                                 exit_val = 1;
2863                                 break;
2864                         }
2865                         if (val < 1000) {
2866                                 log_err("fio: status interval too small\n");
2867                                 do_exit++;
2868                                 exit_val = 1;
2869                         }
2870                         status_interval = val / 1000;
2871                         break;
2872                         }
2873                 case 'W':
2874                         if (trigger_file)
2875                                 free(trigger_file);
2876                         trigger_file = strdup(optarg);
2877                         break;
2878                 case 'H':
2879                         if (trigger_cmd)
2880                                 free(trigger_cmd);
2881                         trigger_cmd = strdup(optarg);
2882                         break;
2883                 case 'J':
2884                         if (trigger_remote_cmd)
2885                                 free(trigger_remote_cmd);
2886                         trigger_remote_cmd = strdup(optarg);
2887                         break;
2888                 case 'K':
2889                         if (aux_path)
2890                                 free(aux_path);
2891                         aux_path = strdup(optarg);
2892                         break;
2893                 case 'B':
2894                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2895                                 log_err("fio: failed parsing time %s\n", optarg);
2896                                 do_exit++;
2897                                 exit_val = 1;
2898                         }
2899                         trigger_timeout /= 1000000;
2900                         break;
2901
2902                 case 'A':
2903                         did_arg = true;
2904                         merge_blktrace_only = true;
2905                         break;
2906                 case '?':
2907                         log_err("%s: unrecognized option '%s'\n", argv[0],
2908                                                         argv[optind - 1]);
2909                         show_closest_option(argv[optind - 1]);
2910                 default:
2911                         do_exit++;
2912                         exit_val = 1;
2913                         break;
2914                 }
2915                 if (do_exit)
2916                         break;
2917         }
2918
2919         if (do_exit && !(is_backend || nr_clients))
2920                 exit(exit_val);
2921
2922         if (nr_clients && fio_clients_connect())
2923                 exit(1);
2924
2925         if (is_backend && backend)
2926                 return fio_start_server(pid_file);
2927         else if (pid_file)
2928                 free(pid_file);
2929
2930         if (td) {
2931                 if (!ret) {
2932                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2933                         if (ret)
2934                                 exit(1);
2935                 }
2936         }
2937
2938         while (!ret && optind < argc) {
2939                 ini_idx++;
2940                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2941                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2942                 optind++;
2943         }
2944
2945 out_free:
2946         return ini_idx;
2947 }
2948
2949 int fio_init_options(void)
2950 {
2951         f_out = stdout;
2952         f_err = stderr;
2953
2954         fio_options_fill_optstring();
2955         fio_options_dup_and_init(l_opts);
2956
2957         atexit(free_shm);
2958
2959         if (fill_def_thread())
2960                 return 1;
2961
2962         return 0;
2963 }
2964
2965 extern int fio_check_options(struct thread_options *);
2966
2967 int parse_options(int argc, char *argv[])
2968 {
2969         const int type = FIO_CLIENT_TYPE_CLI;
2970         int job_files, i;
2971
2972         if (fio_init_options())
2973                 return 1;
2974         if (fio_test_cconv(&def_thread.o))
2975                 log_err("fio: failed internal cconv test\n");
2976
2977         job_files = parse_cmd_line(argc, argv, type);
2978
2979         if (job_files > 0) {
2980                 for (i = 0; i < job_files; i++) {
2981                         if (i && fill_def_thread())
2982                                 return 1;
2983                         if (nr_clients) {
2984                                 if (fio_clients_send_ini(ini_file[i]))
2985                                         return 1;
2986                                 free(ini_file[i]);
2987                         } else if (!is_backend) {
2988                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2989                                         return 1;
2990                                 free(ini_file[i]);
2991                         }
2992                 }
2993         } else if (nr_clients) {
2994                 if (fill_def_thread())
2995                         return 1;
2996                 if (fio_clients_send_ini(NULL))
2997                         return 1;
2998         }
2999
3000         free(ini_file);
3001         fio_options_free(&def_thread);
3002         filesetup_mem_free();
3003
3004         if (!thread_number) {
3005                 if (parse_dryrun())
3006                         return 0;
3007                 if (exec_profile)
3008                         return 0;
3009                 if (is_backend || nr_clients)
3010                         return 0;
3011                 if (did_arg)
3012                         return 0;
3013
3014                 log_err("No job(s) defined\n\n");
3015                 usage(argv[0]);
3016                 return 1;
3017         }
3018
3019         if (output_format & FIO_OUTPUT_NORMAL)
3020                 log_info("%s\n", fio_version_string);
3021
3022         return 0;
3023 }
3024
3025 void options_default_fill(struct thread_options *o)
3026 {
3027         memcpy(o, &def_thread.o, sizeof(*o));
3028 }
3029
3030 struct thread_data *get_global_options(void)
3031 {
3032         return &def_thread;
3033 }