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 <fcntl.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <sys/ipc.h>
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14
  15 #include "fio.h"
  16 #ifndef FIO_NO_HAVE_SHM_H
  17 #include <sys/shm.h>
  18 #endif
  19
  20 #include "parse.h"
  21 #include "smalloc.h"
  22 #include "filehash.h"
  23 #include "verify.h"
  24 #include "profile.h"
  25 #include "server.h"
  26 #include "idletime.h"
  27 #include "filelock.h"
  28
  29 #include "lib/getopt.h"
  30 #include "lib/strcasestr.h"
  31
  32 #include "crc/test.h"
  33
  34 const char fio_version_string[] = FIO_VERSION;
  35
  36 #define FIO_RANDSEED            (0xb1899bedUL)
  37
  38 static char **ini_file;
  39 static int max_jobs = FIO_MAX_JOBS;
  40 static int dump_cmdline;
  41 static long long def_timeout;
  42 static int parse_only;
  43
  44 static struct thread_data def_thread;
  45 struct thread_data *threads = NULL;
  46 static char **job_sections;
  47 static int nr_job_sections;
  48
  49 int exitall_on_terminate = 0;
  50 int output_format = FIO_OUTPUT_NORMAL;
  51 int append_terse_output = 0;
  52 int eta_print = FIO_ETA_AUTO;
  53 int eta_new_line = 0;
  54 FILE *f_out = NULL;
  55 FILE *f_err = NULL;
  56 char *exec_profile = NULL;
  57 int warnings_fatal = 0;
  58 int terse_version = 3;
  59 int is_backend = 0;
  60 int nr_clients = 0;
  61 int log_syslog = 0;
  62
  63 int write_bw_log = 0;
  64 int read_only = 0;
  65 int status_interval = 0;
  66
  67 char *trigger_file = NULL;
  68 long long trigger_timeout = 0;
  69 char *trigger_cmd = NULL;
  70 char *trigger_remote_cmd = NULL;
  71
  72 static int prev_group_jobs;
  73
  74 unsigned long fio_debug = 0;
  75 unsigned int fio_debug_jobno = -1;
  76 unsigned int *fio_debug_jobp = NULL;
  77
  78 static char cmd_optstr[256];
  79 static int did_arg;
  80
  81 #define FIO_CLIENT_FLAG         (1 << 16)
  82
  83 /*
  84  * Command line options. These will contain the above, plus a few
  85  * extra that only pertain to fio itself and not jobs.
  86  */
  87 static struct option l_opts[FIO_NR_OPTIONS] = {
  88         {
  89                 .name           = (char *) "output",
  90                 .has_arg        = required_argument,
  91                 .val            = 'o' | FIO_CLIENT_FLAG,
  92         },
  93         {
  94                 .name           = (char *) "timeout",
  95                 .has_arg        = required_argument,
  96                 .val            = 't' | FIO_CLIENT_FLAG,
  97         },
  98         {
  99                 .name           = (char *) "latency-log",
 100                 .has_arg        = required_argument,
 101                 .val            = 'l' | FIO_CLIENT_FLAG,
 102         },
 103         {
 104                 .name           = (char *) "bandwidth-log",
 105                 .has_arg        = required_argument,
 106                 .val            = 'b' | FIO_CLIENT_FLAG,
 107         },
 108         {
 109                 .name           = (char *) "minimal",
 110                 .has_arg        = no_argument,
 111                 .val            = 'm' | FIO_CLIENT_FLAG,
 112         },
 113         {
 114                 .name           = (char *) "output-format",
 115                 .has_arg        = optional_argument,
 116                 .val            = 'F' | FIO_CLIENT_FLAG,
 117         },
 118         {
 119                 .name           = (char *) "append-terse",
 120                 .has_arg        = optional_argument,
 121                 .val            = 'f',
 122         },
 123         {
 124                 .name           = (char *) "version",
 125                 .has_arg        = no_argument,
 126                 .val            = 'v' | FIO_CLIENT_FLAG,
 127         },
 128         {
 129                 .name           = (char *) "help",
 130                 .has_arg        = no_argument,
 131                 .val            = 'h' | FIO_CLIENT_FLAG,
 132         },
 133         {
 134                 .name           = (char *) "cmdhelp",
 135                 .has_arg        = optional_argument,
 136                 .val            = 'c' | FIO_CLIENT_FLAG,
 137         },
 138         {
 139                 .name           = (char *) "enghelp",
 140                 .has_arg        = optional_argument,
 141                 .val            = 'i' | FIO_CLIENT_FLAG,
 142         },
 143         {
 144                 .name           = (char *) "showcmd",
 145                 .has_arg        = no_argument,
 146                 .val            = 's' | FIO_CLIENT_FLAG,
 147         },
 148         {
 149                 .name           = (char *) "readonly",
 150                 .has_arg        = no_argument,
 151                 .val            = 'r' | FIO_CLIENT_FLAG,
 152         },
 153         {
 154                 .name           = (char *) "eta",
 155                 .has_arg        = required_argument,
 156                 .val            = 'e' | FIO_CLIENT_FLAG,
 157         },
 158         {
 159                 .name           = (char *) "eta-newline",
 160                 .has_arg        = required_argument,
 161                 .val            = 'E' | FIO_CLIENT_FLAG,
 162         },
 163         {
 164                 .name           = (char *) "debug",
 165                 .has_arg        = required_argument,
 166                 .val            = 'd' | FIO_CLIENT_FLAG,
 167         },
 168         {
 169                 .name           = (char *) "parse-only",
 170                 .has_arg        = no_argument,
 171                 .val            = 'P' | FIO_CLIENT_FLAG,
 172         },
 173         {
 174                 .name           = (char *) "section",
 175                 .has_arg        = required_argument,
 176                 .val            = 'x' | FIO_CLIENT_FLAG,
 177         },
 178 #ifdef CONFIG_ZLIB
 179         {
 180                 .name           = (char *) "inflate-log",
 181                 .has_arg        = required_argument,
 182                 .val            = 'X' | FIO_CLIENT_FLAG,
 183         },
 184 #endif
 185         {
 186                 .name           = (char *) "alloc-size",
 187                 .has_arg        = required_argument,
 188                 .val            = 'a' | FIO_CLIENT_FLAG,
 189         },
 190         {
 191                 .name           = (char *) "profile",
 192                 .has_arg        = required_argument,
 193                 .val            = 'p' | FIO_CLIENT_FLAG,
 194         },
 195         {
 196                 .name           = (char *) "warnings-fatal",
 197                 .has_arg        = no_argument,
 198                 .val            = 'w' | FIO_CLIENT_FLAG,
 199         },
 200         {
 201                 .name           = (char *) "max-jobs",
 202                 .has_arg        = required_argument,
 203                 .val            = 'j' | FIO_CLIENT_FLAG,
 204         },
 205         {
 206                 .name           = (char *) "terse-version",
 207                 .has_arg        = required_argument,
 208                 .val            = 'V' | FIO_CLIENT_FLAG,
 209         },
 210         {
 211                 .name           = (char *) "server",
 212                 .has_arg        = optional_argument,
 213                 .val            = 'S',
 214         },
 215         {       .name           = (char *) "daemonize",
 216                 .has_arg        = required_argument,
 217                 .val            = 'D',
 218         },
 219         {
 220                 .name           = (char *) "client",
 221                 .has_arg        = required_argument,
 222                 .val            = 'C',
 223         },
 224         {
 225                 .name           = (char *) "remote-config",
 226                 .has_arg        = required_argument,
 227                 .val            = 'R',
 228         },
 229         {
 230                 .name           = (char *) "cpuclock-test",
 231                 .has_arg        = no_argument,
 232                 .val            = 'T',
 233         },
 234         {
 235                 .name           = (char *) "crctest",
 236                 .has_arg        = optional_argument,
 237                 .val            = 'G',
 238         },
 239         {
 240                 .name           = (char *) "idle-prof",
 241                 .has_arg        = required_argument,
 242                 .val            = 'I',
 243         },
 244         {
 245                 .name           = (char *) "status-interval",
 246                 .has_arg        = required_argument,
 247                 .val            = 'L',
 248         },
 249         {
 250                 .name           = (char *) "trigger-file",
 251                 .has_arg        = required_argument,
 252                 .val            = 'W',
 253         },
 254         {
 255                 .name           = (char *) "trigger-timeout",
 256                 .has_arg        = required_argument,
 257                 .val            = 'B',
 258         },
 259         {
 260                 .name           = (char *) "trigger",
 261                 .has_arg        = required_argument,
 262                 .val            = 'H',
 263         },
 264         {
 265                 .name           = (char *) "trigger-remote",
 266                 .has_arg        = required_argument,
 267                 .val            = 'J',
 268         },
 269         {
 270                 .name           = NULL,
 271         },
 272 };
 273
 274 void free_threads_shm(void)
 275 {
 276         if (threads) {
 277                 void *tp = threads;
 278 #ifndef CONFIG_NO_SHM
 279                 struct shmid_ds sbuf;
 280
 281                 threads = NULL;
 282                 shmdt(tp);
 283                 shmctl(shm_id, IPC_RMID, &sbuf);
 284                 shm_id = -1;
 285 #else
 286                 threads = NULL;
 287                 free(tp);
 288 #endif
 289         }
 290 }
 291
 292 static void free_shm(void)
 293 {
 294         if (threads) {
 295                 file_hash_exit();
 296                 flow_exit();
 297                 fio_debug_jobp = NULL;
 298                 free_threads_shm();
 299         }
 300
 301         free(trigger_file);
 302         free(trigger_cmd);
 303         free(trigger_remote_cmd);
 304         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 305
 306         options_free(fio_options, &def_thread);
 307         fio_filelock_exit();
 308         scleanup();
 309 }
 310
 311 /*
 312  * The thread area is shared between the main process and the job
 313  * threads/processes. So setup a shared memory segment that will hold
 314  * all the job info. We use the end of the region for keeping track of
 315  * open files across jobs, for file sharing.
 316  */
 317 static int setup_thread_area(void)
 318 {
 319         void *hash;
 320
 321         if (threads)
 322                 return 0;
 323
 324         /*
 325          * 1024 is too much on some machines, scale max_jobs if
 326          * we get a failure that looks like too large a shm segment
 327          */
 328         do {
 329                 size_t size = max_jobs * sizeof(struct thread_data);
 330
 331                 size += file_hash_size;
 332                 size += sizeof(unsigned int);
 333
 334 #ifndef CONFIG_NO_SHM
 335                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 336                 if (shm_id != -1)
 337                         break;
 338                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 339                         perror("shmget");
 340                         break;
 341                 }
 342 #else
 343                 threads = malloc(size);
 344                 if (threads)
 345                         break;
 346 #endif
 347
 348                 max_jobs >>= 1;
 349         } while (max_jobs);
 350
 351 #ifndef CONFIG_NO_SHM
 352         if (shm_id == -1)
 353                 return 1;
 354
 355         threads = shmat(shm_id, NULL, 0);
 356         if (threads == (void *) -1) {
 357                 perror("shmat");
 358                 return 1;
 359         }
 360 #endif
 361
 362         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 363         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 364         fio_debug_jobp = (void *) hash + file_hash_size;
 365         *fio_debug_jobp = -1;
 366         file_hash_init(hash);
 367
 368         flow_init();
 369
 370         return 0;
 371 }
 372
 373 static void set_cmd_options(struct thread_data *td)
 374 {
 375         struct thread_options *o = &td->o;
 376
 377         if (!o->timeout)
 378                 o->timeout = def_timeout;
 379 }
 380
 381 /*
 382  * Return a free job structure.
 383  */
 384 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 385                                        int preserve_eo, const char *jobname)
 386 {
 387         struct thread_data *td;
 388
 389         if (global) {
 390                 set_cmd_options(&def_thread);
 391                 return &def_thread;
 392         }
 393         if (setup_thread_area()) {
 394                 log_err("error: failed to setup shm segment\n");
 395                 return NULL;
 396         }
 397         if (thread_number >= max_jobs) {
 398                 log_err("error: maximum number of jobs (%d) reached.\n",
 399                                 max_jobs);
 400                 return NULL;
 401         }
 402
 403         td = &threads[thread_number++];
 404         *td = *parent;
 405
 406         td->io_ops = NULL;
 407         if (!preserve_eo)
 408                 td->eo = NULL;
 409
 410         td->o.uid = td->o.gid = -1U;
 411
 412         dup_files(td, parent);
 413         fio_options_mem_dupe(td);
 414
 415         profile_add_hooks(td);
 416
 417         td->thread_number = thread_number;
 418         td->subjob_number = 0;
 419
 420         if (jobname)
 421                 td->o.name = strdup(jobname);
 422
 423         if (!parent->o.group_reporting)
 424                 stat_number++;
 425
 426         set_cmd_options(td);
 427         return td;
 428 }
 429
 430 static void put_job(struct thread_data *td)
 431 {
 432         if (td == &def_thread)
 433                 return;
 434
 435         profile_td_exit(td);
 436         flow_exit_job(td);
 437
 438         if (td->error)
 439                 log_info("fio: %s\n", td->verror);
 440
 441         fio_options_free(td);
 442         if (td->io_ops)
 443                 free_ioengine(td);
 444
 445         if (td->o.name)
 446                 free(td->o.name);
 447
 448         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 449         thread_number--;
 450 }
 451
 452 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 453 {
 454         unsigned int bs = td->o.min_bs[ddir];
 455
 456         assert(ddir_rw(ddir));
 457
 458         if (td->o.rate[ddir])
 459                 td->rate_bps[ddir] = td->o.rate[ddir];
 460         else
 461                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 462
 463         if (!td->rate_bps[ddir]) {
 464                 log_err("rate lower than supported\n");
 465                 return -1;
 466         }
 467
 468         td->rate_pending_usleep[ddir] = 0;
 469         return 0;
 470 }
 471
 472 static int setup_rate(struct thread_data *td)
 473 {
 474         int ret = 0;
 475
 476         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 477                 ret = __setup_rate(td, DDIR_READ);
 478         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 479                 ret |= __setup_rate(td, DDIR_WRITE);
 480         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 481                 ret |= __setup_rate(td, DDIR_TRIM);
 482
 483         return ret;
 484 }
 485
 486 static int fixed_block_size(struct thread_options *o)
 487 {
 488         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 489                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 490                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 491                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 492                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 493 }
 494
 495
 496 static unsigned long long get_rand_start_delay(struct thread_data *td)
 497 {
 498         unsigned long long delayrange;
 499         unsigned long r;
 500
 501         delayrange = td->o.start_delay_high - td->o.start_delay;
 502
 503         r = __rand(&td->delay_state);
 504         delayrange = (unsigned long long) ((double) delayrange * (r / (FRAND_MAX + 1.0)));
 505
 506         delayrange += td->o.start_delay;
 507         return delayrange;
 508 }
 509
 510 /*
 511  * Lazy way of fixing up options that depend on each other. We could also
 512  * define option callback handlers, but this is easier.
 513  */
 514 static int fixup_options(struct thread_data *td)
 515 {
 516         struct thread_options *o = &td->o;
 517         int ret = 0;
 518
 519 #ifndef FIO_HAVE_PSHARED_MUTEX
 520         if (!o->use_thread) {
 521                 log_info("fio: this platform does not support process shared"
 522                          " mutexes, forcing use of threads. Use the 'thread'"
 523                          " option to get rid of this warning.\n");
 524                 o->use_thread = 1;
 525                 ret = warnings_fatal;
 526         }
 527 #endif
 528
 529         if (o->write_iolog_file && o->read_iolog_file) {
 530                 log_err("fio: read iolog overrides write_iolog\n");
 531                 free(o->write_iolog_file);
 532                 o->write_iolog_file = NULL;
 533                 ret = warnings_fatal;
 534         }
 535
 536         /*
 537          * only really works with 1 file
 538          */
 539         if (o->zone_size && o->open_files > 1)
 540                 o->zone_size = 0;
 541
 542         /*
 543          * If zone_range isn't specified, backward compatibility dictates it
 544          * should be made equal to zone_size.
 545          */
 546         if (o->zone_size && !o->zone_range)
 547                 o->zone_range = o->zone_size;
 548
 549         /*
 550          * Reads can do overwrites, we always need to pre-create the file
 551          */
 552         if (td_read(td) || td_rw(td))
 553                 o->overwrite = 1;
 554
 555         if (!o->min_bs[DDIR_READ])
 556                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 557         if (!o->max_bs[DDIR_READ])
 558                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 559         if (!o->min_bs[DDIR_WRITE])
 560                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 561         if (!o->max_bs[DDIR_WRITE])
 562                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 563         if (!o->min_bs[DDIR_TRIM])
 564                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 565         if (!o->max_bs[DDIR_TRIM])
 566                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 567
 568         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 569         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 570
 571         /*
 572          * For random IO, allow blockalign offset other than min_bs.
 573          */
 574         if (!o->ba[DDIR_READ] || !td_random(td))
 575                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 576         if (!o->ba[DDIR_WRITE] || !td_random(td))
 577                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 578         if (!o->ba[DDIR_TRIM] || !td_random(td))
 579                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 580
 581         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 582             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 583             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 584             !o->norandommap) {
 585                 log_err("fio: Any use of blockalign= turns off randommap\n");
 586                 o->norandommap = 1;
 587                 ret = warnings_fatal;
 588         }
 589
 590         if (!o->file_size_high)
 591                 o->file_size_high = o->file_size_low;
 592
 593         if (o->start_delay_high)
 594                 o->start_delay = get_rand_start_delay(td);
 595
 596         if (o->norandommap && o->verify != VERIFY_NONE
 597             && !fixed_block_size(o))  {
 598                 log_err("fio: norandommap given for variable block sizes, "
 599                         "verify limited\n");
 600                 ret = warnings_fatal;
 601         }
 602         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 603                 log_err("fio: bs_unaligned may not work with raw io\n");
 604
 605         /*
 606          * thinktime_spin must be less than thinktime
 607          */
 608         if (o->thinktime_spin > o->thinktime)
 609                 o->thinktime_spin = o->thinktime;
 610
 611         /*
 612          * The low water mark cannot be bigger than the iodepth
 613          */
 614         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 615                 o->iodepth_low = o->iodepth;
 616
 617         /*
 618          * If batch number isn't set, default to the same as iodepth
 619          */
 620         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 621                 o->iodepth_batch = o->iodepth;
 622
 623         if (o->nr_files > td->files_index)
 624                 o->nr_files = td->files_index;
 625
 626         if (o->open_files > o->nr_files || !o->open_files)
 627                 o->open_files = o->nr_files;
 628
 629         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 630             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 631             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 632             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 633                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 634                 ret = 1;
 635         }
 636         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 637             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 638             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 639             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 640             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 641             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 642                 log_err("fio: minimum rate exceeds rate\n");
 643                 ret = 1;
 644         }
 645
 646         if (!o->timeout && o->time_based) {
 647                 log_err("fio: time_based requires a runtime/timeout setting\n");
 648                 o->time_based = 0;
 649                 ret = warnings_fatal;
 650         }
 651
 652         if (o->fill_device && !o->size)
 653                 o->size = -1ULL;
 654
 655         if (o->verify != VERIFY_NONE) {
 656                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 657                         log_info("Multiple writers may overwrite blocks that "
 658                                 "belong to other jobs. This can cause "
 659                                 "verification failures.\n");
 660                         ret = warnings_fatal;
 661                 }
 662
 663                 o->refill_buffers = 1;
 664                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 665                     !o->verify_interval)
 666                         o->verify_interval = o->min_bs[DDIR_WRITE];
 667
 668                 /*
 669                  * Verify interval must be smaller or equal to the
 670                  * write size.
 671                  */
 672                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 673                         o->verify_interval = o->min_bs[DDIR_WRITE];
 674                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 675                         o->verify_interval = o->min_bs[DDIR_READ];
 676         }
 677
 678         if (o->pre_read) {
 679                 o->invalidate_cache = 0;
 680                 if (td->io_ops->flags & FIO_PIPEIO) {
 681                         log_info("fio: cannot pre-read files with an IO engine"
 682                                  " that isn't seekable. Pre-read disabled.\n");
 683                         ret = warnings_fatal;
 684                 }
 685         }
 686
 687         if (!o->unit_base) {
 688                 if (td->io_ops->flags & FIO_BIT_BASED)
 689                         o->unit_base = 1;
 690                 else
 691                         o->unit_base = 8;
 692         }
 693
 694 #ifndef CONFIG_FDATASYNC
 695         if (o->fdatasync_blocks) {
 696                 log_info("fio: this platform does not support fdatasync()"
 697                          " falling back to using fsync().  Use the 'fsync'"
 698                          " option instead of 'fdatasync' to get rid of"
 699                          " this warning\n");
 700                 o->fsync_blocks = o->fdatasync_blocks;
 701                 o->fdatasync_blocks = 0;
 702                 ret = warnings_fatal;
 703         }
 704 #endif
 705
 706 #ifdef WIN32
 707         /*
 708          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 709          * so fail if we're passed those flags
 710          */
 711         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 712                 log_err("fio: Windows does not support direct or non-buffered io with"
 713                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 714                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 715                 ret = 1;
 716         }
 717 #endif
 718
 719         /*
 720          * For fully compressible data, just zero them at init time.
 721          * It's faster than repeatedly filling it.
 722          */
 723         if (td->o.compress_percentage == 100) {
 724                 td->o.zero_buffers = 1;
 725                 td->o.compress_percentage = 0;
 726         }
 727
 728         /*
 729          * Using a non-uniform random distribution excludes usage of
 730          * a random map
 731          */
 732         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
 733                 td->o.norandommap = 1;
 734
 735         /*
 736          * If size is set but less than the min block size, complain
 737          */
 738         if (o->size && o->size < td_min_bs(td)) {
 739                 log_err("fio: size too small, must be larger than the IO size: %llu\n", (unsigned long long) o->size);
 740                 ret = 1;
 741         }
 742
 743         /*
 744          * O_ATOMIC implies O_DIRECT
 745          */
 746         if (td->o.oatomic)
 747                 td->o.odirect = 1;
 748
 749         /*
 750          * If randseed is set, that overrides randrepeat
 751          */
 752         if (td->o.rand_seed)
 753                 td->o.rand_repeatable = 0;
 754
 755         if ((td->io_ops->flags & FIO_NOEXTEND) && td->o.file_append) {
 756                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 757                 ret = 1;
 758         }
 759
 760         if (fio_option_is_set(o, gtod_cpu)) {
 761                 fio_gtod_init();
 762                 fio_gtod_set_cpu(o->gtod_cpu);
 763                 fio_gtod_offload = 1;
 764         }
 765
 766         td->loops = o->loops;
 767         if (!td->loops)
 768                 td->loops = 1;
 769
 770         return ret;
 771 }
 772
 773 /*
 774  * This function leaks the buffer
 775  */
 776 char *fio_uint_to_kmg(unsigned int val)
 777 {
 778         char *buf = malloc(32);
 779         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 780         char *p = post;
 781
 782         do {
 783                 if (val & 1023)
 784                         break;
 785
 786                 val >>= 10;
 787                 p++;
 788         } while (*p);
 789
 790         snprintf(buf, 32, "%u%c", val, *p);
 791         return buf;
 792 }
 793
 794 /* External engines are specified by "external:name.o") */
 795 static const char *get_engine_name(const char *str)
 796 {
 797         char *p = strstr(str, ":");
 798
 799         if (!p)
 800                 return str;
 801
 802         p++;
 803         strip_blank_front(&p);
 804         strip_blank_end(p);
 805         return p;
 806 }
 807
 808 static int exists_and_not_file(const char *filename)
 809 {
 810         struct stat sb;
 811
 812         if (lstat(filename, &sb) == -1)
 813                 return 0;
 814
 815         /* \\.\ is the device namespace in Windows, where every file
 816          * is a device node */
 817         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 818                 return 0;
 819
 820         return 1;
 821 }
 822
 823 static void td_fill_rand_seeds_internal(struct thread_data *td)
 824 {
 825         init_rand_seed(&td->bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
 826         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
 827         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
 828
 829         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 830                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
 831
 832         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
 833         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
 834         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY]);
 835
 836         if (!td_random(td))
 837                 return;
 838
 839         if (td->o.rand_repeatable)
 840                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 841
 842         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
 843         init_rand_seed(&td->seq_rand_state[DDIR_READ], td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF]);
 844         init_rand_seed(&td->seq_rand_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF]);
 845         init_rand_seed(&td->seq_rand_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF]);
 846 }
 847
 848 void td_fill_rand_seeds(struct thread_data *td)
 849 {
 850         if (td->o.allrand_repeatable) {
 851                 unsigned int i;
 852
 853                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
 854                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
 855                                 + i;
 856         }
 857
 858         td_fill_rand_seeds_internal(td);
 859
 860         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
 861         frand_copy(&td->buf_state_prev, &td->buf_state);
 862
 863         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF]);
 864 }
 865
 866 /*
 867  * Initializes the ioengine configured for a job, if it has not been done so
 868  * already.
 869  */
 870 int ioengine_load(struct thread_data *td)
 871 {
 872         const char *engine;
 873
 874         /*
 875          * Engine has already been loaded.
 876          */
 877         if (td->io_ops)
 878                 return 0;
 879         if (!td->o.ioengine) {
 880                 log_err("fio: internal fault, no IO engine specified\n");
 881                 return 1;
 882         }
 883
 884         engine = get_engine_name(td->o.ioengine);
 885         td->io_ops = load_ioengine(td, engine);
 886         if (!td->io_ops) {
 887                 log_err("fio: failed to load engine %s\n", engine);
 888                 return 1;
 889         }
 890
 891         if (td->io_ops->option_struct_size && td->io_ops->options) {
 892                 /*
 893                  * In cases where td->eo is set, clone it for a child thread.
 894                  * This requires that the parent thread has the same ioengine,
 895                  * but that requirement must be enforced by the code which
 896                  * cloned the thread.
 897                  */
 898                 void *origeo = td->eo;
 899                 /*
 900                  * Otherwise use the default thread options.
 901                  */
 902                 if (!origeo && td != &def_thread && def_thread.eo &&
 903                     def_thread.io_ops->options == td->io_ops->options)
 904                         origeo = def_thread.eo;
 905
 906                 options_init(td->io_ops->options);
 907                 td->eo = malloc(td->io_ops->option_struct_size);
 908                 /*
 909                  * Use the default thread as an option template if this uses the
 910                  * same options structure and there are non-default options
 911                  * used.
 912                  */
 913                 if (origeo) {
 914                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 915                         options_mem_dupe(td->eo, td->io_ops->options);
 916                 } else {
 917                         memset(td->eo, 0, td->io_ops->option_struct_size);
 918                         fill_default_options(td->eo, td->io_ops->options);
 919                 }
 920                 *(struct thread_data **)td->eo = td;
 921         }
 922
 923         return 0;
 924 }
 925
 926 static void init_flags(struct thread_data *td)
 927 {
 928         struct thread_options *o = &td->o;
 929
 930         if (o->verify_backlog)
 931                 td->flags |= TD_F_VER_BACKLOG;
 932         if (o->trim_backlog)
 933                 td->flags |= TD_F_TRIM_BACKLOG;
 934         if (o->read_iolog_file)
 935                 td->flags |= TD_F_READ_IOLOG;
 936         if (o->refill_buffers)
 937                 td->flags |= TD_F_REFILL_BUFFERS;
 938         /*
 939          * Always scramble buffers if asked to
 940          */
 941         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
 942                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
 943         /*
 944          * But also scramble buffers, unless we were explicitly asked
 945          * to zero them.
 946          */
 947         if (o->scramble_buffers && !(o->zero_buffers &&
 948             fio_option_is_set(o, zero_buffers)))
 949                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
 950         if (o->verify != VERIFY_NONE)
 951                 td->flags |= TD_F_VER_NONE;
 952 }
 953
 954 static int setup_random_seeds(struct thread_data *td)
 955 {
 956         unsigned long seed;
 957         unsigned int i;
 958
 959         if (!td->o.rand_repeatable && !td->o.rand_seed)
 960                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
 961
 962         if (!td->o.rand_seed)
 963                 seed = 0x89;
 964         else
 965                 seed = td->o.rand_seed;
 966
 967         for (i = 0; i < 4; i++)
 968                 seed *= 0x9e370001UL;
 969
 970         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
 971                 td->rand_seeds[i] = seed;
 972                 seed *= 0x9e370001UL;
 973         }
 974
 975         td_fill_rand_seeds(td);
 976         return 0;
 977 }
 978
 979 enum {
 980         FPRE_NONE = 0,
 981         FPRE_JOBNAME,
 982         FPRE_JOBNUM,
 983         FPRE_FILENUM
 984 };
 985
 986 static struct fpre_keyword {
 987         const char *keyword;
 988         size_t strlen;
 989         int key;
 990 } fpre_keywords[] = {
 991         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
 992         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
 993         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
 994         { .keyword = NULL, },
 995         };
 996
 997 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
 998                            const char *jobname, int jobnum, int filenum)
 999 {
1000         struct fpre_keyword *f;
1001         char copy[PATH_MAX];
1002         size_t dst_left = PATH_MAX - 1;
1003
1004         if (!o->filename_format || !strlen(o->filename_format)) {
1005                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1006                 return NULL;
1007         }
1008
1009         for (f = &fpre_keywords[0]; f->keyword; f++)
1010                 f->strlen = strlen(f->keyword);
1011
1012         buf[buf_size - 1] = '\0';
1013         strncpy(buf, o->filename_format, buf_size - 1);
1014
1015         memset(copy, 0, sizeof(copy));
1016         for (f = &fpre_keywords[0]; f->keyword; f++) {
1017                 do {
1018                         size_t pre_len, post_start = 0;
1019                         char *str, *dst = copy;
1020
1021                         str = strcasestr(buf, f->keyword);
1022                         if (!str)
1023                                 break;
1024
1025                         pre_len = str - buf;
1026                         if (strlen(str) != f->strlen)
1027                                 post_start = pre_len + f->strlen;
1028
1029                         if (pre_len) {
1030                                 strncpy(dst, buf, pre_len);
1031                                 dst += pre_len;
1032                                 dst_left -= pre_len;
1033                         }
1034
1035                         switch (f->key) {
1036                         case FPRE_JOBNAME: {
1037                                 int ret;
1038
1039                                 ret = snprintf(dst, dst_left, "%s", jobname);
1040                                 if (ret < 0)
1041                                         break;
1042                                 else if (ret > dst_left) {
1043                                         log_err("fio: truncated filename\n");
1044                                         dst += dst_left;
1045                                         dst_left = 0;
1046                                 } else {
1047                                         dst += ret;
1048                                         dst_left -= ret;
1049                                 }
1050                                 break;
1051                                 }
1052                         case FPRE_JOBNUM: {
1053                                 int ret;
1054
1055                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1056                                 if (ret < 0)
1057                                         break;
1058                                 else if (ret > dst_left) {
1059                                         log_err("fio: truncated filename\n");
1060                                         dst += dst_left;
1061                                         dst_left = 0;
1062                                 } else {
1063                                         dst += ret;
1064                                         dst_left -= ret;
1065                                 }
1066                                 break;
1067                                 }
1068                         case FPRE_FILENUM: {
1069                                 int ret;
1070
1071                                 ret = snprintf(dst, dst_left, "%d", filenum);
1072                                 if (ret < 0)
1073                                         break;
1074                                 else if (ret > dst_left) {
1075                                         log_err("fio: truncated filename\n");
1076                                         dst += dst_left;
1077                                         dst_left = 0;
1078                                 } else {
1079                                         dst += ret;
1080                                         dst_left -= ret;
1081                                 }
1082                                 break;
1083                                 }
1084                         default:
1085                                 assert(0);
1086                                 break;
1087                         }
1088
1089                         if (post_start)
1090                                 strncpy(dst, buf + post_start, dst_left);
1091
1092                         strncpy(buf, copy, buf_size - 1);
1093                 } while (1);
1094         }
1095
1096         return buf;
1097 }
1098
1099 int parse_dryrun(void)
1100 {
1101         return dump_cmdline || parse_only;
1102 }
1103
1104 /*
1105  * Adds a job to the list of things todo. Sanitizes the various options
1106  * to make sure we don't have conflicts, and initializes various
1107  * members of td.
1108  */
1109 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1110                    int recursed, int client_type)
1111 {
1112         unsigned int i;
1113         char fname[PATH_MAX];
1114         int numjobs, file_alloced;
1115         struct thread_options *o = &td->o;
1116         char logname[PATH_MAX + 32];
1117
1118         /*
1119          * the def_thread is just for options, it's not a real job
1120          */
1121         if (td == &def_thread)
1122                 return 0;
1123
1124         init_flags(td);
1125
1126         /*
1127          * if we are just dumping the output command line, don't add the job
1128          */
1129         if (parse_dryrun()) {
1130                 put_job(td);
1131                 return 0;
1132         }
1133
1134         td->client_type = client_type;
1135
1136         if (profile_td_init(td))
1137                 goto err;
1138
1139         if (ioengine_load(td))
1140                 goto err;
1141
1142         if (o->odirect)
1143                 td->io_ops->flags |= FIO_RAWIO;
1144
1145         file_alloced = 0;
1146         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1147                 file_alloced = 1;
1148
1149                 if (o->nr_files == 1 && exists_and_not_file(jobname))
1150                         add_file(td, jobname, job_add_num, 0);
1151                 else {
1152                         for (i = 0; i < o->nr_files; i++)
1153                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1154                 }
1155         }
1156
1157         if (fixup_options(td))
1158                 goto err;
1159
1160         flow_init_job(td);
1161
1162         /*
1163          * IO engines only need this for option callbacks, and the address may
1164          * change in subprocesses.
1165          */
1166         if (td->eo)
1167                 *(struct thread_data **)td->eo = NULL;
1168
1169         if (td->io_ops->flags & FIO_DISKLESSIO) {
1170                 struct fio_file *f;
1171
1172                 for_each_file(td, f, i)
1173                         f->real_file_size = -1ULL;
1174         }
1175
1176         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1177
1178         td->ts.clat_percentiles = o->clat_percentiles;
1179         td->ts.percentile_precision = o->percentile_precision;
1180         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1181
1182         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1183                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1184                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1185                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1186                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1187         }
1188         td->ddir_seq_nr = o->ddir_seq_nr;
1189
1190         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1191                 prev_group_jobs = 0;
1192                 groupid++;
1193         }
1194
1195         td->groupid = groupid;
1196         prev_group_jobs++;
1197
1198         if (setup_random_seeds(td)) {
1199                 td_verror(td, errno, "init_random_state");
1200                 goto err;
1201         }
1202
1203         if (setup_rate(td))
1204                 goto err;
1205
1206         if (o->lat_log_file) {
1207                 struct log_params p = {
1208                         .td = td,
1209                         .avg_msec = o->log_avg_msec,
1210                         .log_type = IO_LOG_TYPE_LAT,
1211                         .log_offset = o->log_offset,
1212                         .log_gz = o->log_gz,
1213                         .log_gz_store = o->log_gz_store,
1214                 };
1215                 const char *suf;
1216
1217                 if (p.log_gz_store)
1218                         suf = "log.fz";
1219                 else
1220                         suf = "log";
1221
1222                 snprintf(logname, sizeof(logname), "%s_lat.%d.%s",
1223                                 o->lat_log_file, td->thread_number, suf);
1224                 setup_log(&td->lat_log, &p, logname);
1225                 snprintf(logname, sizeof(logname), "%s_slat.%d.%s",
1226                                 o->lat_log_file, td->thread_number, suf);
1227                 setup_log(&td->slat_log, &p, logname);
1228                 snprintf(logname, sizeof(logname), "%s_clat.%d.%s",
1229                                 o->lat_log_file, td->thread_number, suf);
1230                 setup_log(&td->clat_log, &p, logname);
1231         }
1232         if (o->bw_log_file) {
1233                 struct log_params p = {
1234                         .td = td,
1235                         .avg_msec = o->log_avg_msec,
1236                         .log_type = IO_LOG_TYPE_BW,
1237                         .log_offset = o->log_offset,
1238                         .log_gz = o->log_gz,
1239                         .log_gz_store = o->log_gz_store,
1240                 };
1241                 const char *suf;
1242
1243                 if (p.log_gz_store)
1244                         suf = "log.fz";
1245                 else
1246                         suf = "log";
1247
1248                 snprintf(logname, sizeof(logname), "%s_bw.%d.%s",
1249                                 o->bw_log_file, td->thread_number, suf);
1250                 setup_log(&td->bw_log, &p, logname);
1251         }
1252         if (o->iops_log_file) {
1253                 struct log_params p = {
1254                         .td = td,
1255                         .avg_msec = o->log_avg_msec,
1256                         .log_type = IO_LOG_TYPE_IOPS,
1257                         .log_offset = o->log_offset,
1258                         .log_gz = o->log_gz,
1259                         .log_gz_store = o->log_gz_store,
1260                 };
1261                 const char *suf;
1262
1263                 if (p.log_gz_store)
1264                         suf = "log.fz";
1265                 else
1266                         suf = "log";
1267
1268                 snprintf(logname, sizeof(logname), "%s_iops.%d.%s",
1269                                 o->iops_log_file, td->thread_number, suf);
1270                 setup_log(&td->iops_log, &p, logname);
1271         }
1272
1273         if (!o->name)
1274                 o->name = strdup(jobname);
1275
1276         if (output_format == FIO_OUTPUT_NORMAL) {
1277                 if (!job_add_num) {
1278                         if (is_backend && !recursed)
1279                                 fio_server_send_add_job(td);
1280
1281                         if (!(td->io_ops->flags & FIO_NOIO)) {
1282                                 char *c1, *c2, *c3, *c4;
1283                                 char *c5 = NULL, *c6 = NULL;
1284
1285                                 c1 = fio_uint_to_kmg(o->min_bs[DDIR_READ]);
1286                                 c2 = fio_uint_to_kmg(o->max_bs[DDIR_READ]);
1287                                 c3 = fio_uint_to_kmg(o->min_bs[DDIR_WRITE]);
1288                                 c4 = fio_uint_to_kmg(o->max_bs[DDIR_WRITE]);
1289
1290                                 if (!o->bs_is_seq_rand) {
1291                                         c5 = fio_uint_to_kmg(o->min_bs[DDIR_TRIM]);
1292                                         c6 = fio_uint_to_kmg(o->max_bs[DDIR_TRIM]);
1293                                 }
1294
1295                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1296                                                         td->groupid,
1297                                                         ddir_str(o->td_ddir));
1298
1299                                 if (o->bs_is_seq_rand)
1300                                         log_info("bs(seq/rand)=%s-%s/%s-%s, ",
1301                                                         c1, c2, c3, c4);
1302                                 else
1303                                         log_info("bs=%s-%s/%s-%s/%s-%s, ",
1304                                                         c1, c2, c3, c4, c5, c6);
1305
1306                                 log_info("ioengine=%s, iodepth=%u\n",
1307                                                 td->io_ops->name, o->iodepth);
1308
1309                                 free(c1);
1310                                 free(c2);
1311                                 free(c3);
1312                                 free(c4);
1313                                 free(c5);
1314                                 free(c6);
1315                         }
1316                 } else if (job_add_num == 1)
1317                         log_info("...\n");
1318         }
1319
1320         /*
1321          * recurse add identical jobs, clear numjobs and stonewall options
1322          * as they don't apply to sub-jobs
1323          */
1324         numjobs = o->numjobs;
1325         while (--numjobs) {
1326                 struct thread_data *td_new = get_new_job(0, td, 1, jobname);
1327
1328                 if (!td_new)
1329                         goto err;
1330
1331                 td_new->o.numjobs = 1;
1332                 td_new->o.stonewall = 0;
1333                 td_new->o.new_group = 0;
1334                 td_new->subjob_number = numjobs;
1335
1336                 if (file_alloced) {
1337                         if (td_new->files) {
1338                                 struct fio_file *f;
1339                                 for_each_file(td_new, f, i) {
1340                                         if (f->file_name)
1341                                                 sfree(f->file_name);
1342                                         sfree(f);
1343                                 }
1344                                 free(td_new->files);
1345                                 td_new->files = NULL;
1346                         }
1347                         td_new->files_index = 0;
1348                         td_new->files_size = 0;
1349                         if (td_new->o.filename) {
1350                                 free(td_new->o.filename);
1351                                 td_new->o.filename = NULL;
1352                         }
1353                 }
1354
1355                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1356                         goto err;
1357         }
1358
1359         return 0;
1360 err:
1361         put_job(td);
1362         return -1;
1363 }
1364
1365 /*
1366  * Parse as if 'o' was a command line
1367  */
1368 void add_job_opts(const char **o, int client_type)
1369 {
1370         struct thread_data *td, *td_parent;
1371         int i, in_global = 1;
1372         char jobname[32];
1373
1374         i = 0;
1375         td_parent = td = NULL;
1376         while (o[i]) {
1377                 if (!strncmp(o[i], "name", 4)) {
1378                         in_global = 0;
1379                         if (td)
1380                                 add_job(td, jobname, 0, 0, client_type);
1381                         td = NULL;
1382                         sprintf(jobname, "%s", o[i] + 5);
1383                 }
1384                 if (in_global && !td_parent)
1385                         td_parent = get_new_job(1, &def_thread, 0, jobname);
1386                 else if (!in_global && !td) {
1387                         if (!td_parent)
1388                                 td_parent = &def_thread;
1389                         td = get_new_job(0, td_parent, 0, jobname);
1390                 }
1391                 if (in_global)
1392                         fio_options_parse(td_parent, (char **) &o[i], 1, 0);
1393                 else
1394                         fio_options_parse(td, (char **) &o[i], 1, 0);
1395                 i++;
1396         }
1397
1398         if (td)
1399                 add_job(td, jobname, 0, 0, client_type);
1400 }
1401
1402 static int skip_this_section(const char *name)
1403 {
1404         int i;
1405
1406         if (!nr_job_sections)
1407                 return 0;
1408         if (!strncmp(name, "global", 6))
1409                 return 0;
1410
1411         for (i = 0; i < nr_job_sections; i++)
1412                 if (!strcmp(job_sections[i], name))
1413                         return 0;
1414
1415         return 1;
1416 }
1417
1418 static int is_empty_or_comment(char *line)
1419 {
1420         unsigned int i;
1421
1422         for (i = 0; i < strlen(line); i++) {
1423                 if (line[i] == ';')
1424                         return 1;
1425                 if (line[i] == '#')
1426                         return 1;
1427                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1428                         return 0;
1429         }
1430
1431         return 1;
1432 }
1433
1434 /*
1435  * This is our [ini] type file parser.
1436  */
1437 int __parse_jobs_ini(struct thread_data *td,
1438                 char *file, int is_buf, int stonewall_flag, int type,
1439                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1440 {
1441         unsigned int global = 0;
1442         char *string;
1443         FILE *f;
1444         char *p;
1445         int ret = 0, stonewall;
1446         int first_sect = 1;
1447         int skip_fgets = 0;
1448         int inside_skip = 0;
1449         char **opts;
1450         int i, alloc_opts, num_opts;
1451
1452         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1453         assert(td || !nested);
1454
1455         if (is_buf)
1456                 f = NULL;
1457         else {
1458                 if (!strcmp(file, "-"))
1459                         f = stdin;
1460                 else
1461                         f = fopen(file, "r");
1462
1463                 if (!f) {
1464                         int __err = errno;
1465
1466                         log_err("fio: unable to open '%s' job file\n", file);
1467                         if (td)
1468                                 td_verror(td, __err, "job file open");
1469                         return 1;
1470                 }
1471         }
1472
1473         string = malloc(4096);
1474
1475         /*
1476          * it's really 256 + small bit, 280 should suffice
1477          */
1478         if (!nested) {
1479                 name = malloc(280);
1480                 memset(name, 0, 280);
1481         }
1482
1483         opts = NULL;
1484         if (nested && popts) {
1485                 opts = *popts;
1486                 alloc_opts = *aopts;
1487                 num_opts = *nopts;
1488         }
1489
1490         if (!opts) {
1491                 alloc_opts = 8;
1492                 opts = malloc(sizeof(char *) * alloc_opts);
1493                 num_opts = 0;
1494         }
1495
1496         stonewall = stonewall_flag;
1497         do {
1498                 /*
1499                  * if skip_fgets is set, we already have loaded a line we
1500                  * haven't handled.
1501                  */
1502                 if (!skip_fgets) {
1503                         if (is_buf)
1504                                 p = strsep(&file, "\n");
1505                         else
1506                                 p = fgets(string, 4096, f);
1507                         if (!p)
1508                                 break;
1509                 }
1510
1511                 skip_fgets = 0;
1512                 strip_blank_front(&p);
1513                 strip_blank_end(p);
1514
1515                 dprint(FD_PARSE, "%s\n", p);
1516                 if (is_empty_or_comment(p))
1517                         continue;
1518
1519                 if (!nested) {
1520                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1521                                 if (inside_skip)
1522                                         continue;
1523
1524                                 log_err("fio: option <%s> outside of "
1525                                         "[] job section\n", p);
1526                                 ret = 1;
1527                                 break;
1528                         }
1529
1530                         name[strlen(name) - 1] = '\0';
1531
1532                         if (skip_this_section(name)) {
1533                                 inside_skip = 1;
1534                                 continue;
1535                         } else
1536                                 inside_skip = 0;
1537
1538                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1539
1540                         global = !strncmp(name, "global", 6);
1541
1542                         if (dump_cmdline) {
1543                                 if (first_sect)
1544                                         log_info("fio ");
1545                                 if (!global)
1546                                         log_info("--name=%s ", name);
1547                                 first_sect = 0;
1548                         }
1549
1550                         td = get_new_job(global, &def_thread, 0, name);
1551                         if (!td) {
1552                                 ret = 1;
1553                                 break;
1554                         }
1555
1556                         /*
1557                          * Separate multiple job files by a stonewall
1558                          */
1559                         if (!global && stonewall) {
1560                                 td->o.stonewall = stonewall;
1561                                 stonewall = 0;
1562                         }
1563
1564                         num_opts = 0;
1565                         memset(opts, 0, alloc_opts * sizeof(char *));
1566                 }
1567                 else
1568                         skip_fgets = 1;
1569
1570                 while (1) {
1571                         if (!skip_fgets) {
1572                                 if (is_buf)
1573                                         p = strsep(&file, "\n");
1574                                 else
1575                                         p = fgets(string, 4096, f);
1576                                 if (!p)
1577                                         break;
1578                                 dprint(FD_PARSE, "%s", p);
1579                         }
1580                         else
1581                                 skip_fgets = 0;
1582
1583                         if (is_empty_or_comment(p))
1584                                 continue;
1585
1586                         strip_blank_front(&p);
1587
1588                         /*
1589                          * new section, break out and make sure we don't
1590                          * fgets() a new line at the top.
1591                          */
1592                         if (p[0] == '[') {
1593                                 if (nested) {
1594                                         log_err("No new sections in included files\n");
1595                                         return 1;
1596                                 }
1597
1598                                 skip_fgets = 1;
1599                                 break;
1600                         }
1601
1602                         strip_blank_end(p);
1603
1604                         if (!strncmp(p, "include", strlen("include"))) {
1605                                 char *filename = p + strlen("include") + 1;
1606
1607                                 if ((ret = __parse_jobs_ini(td, filename,
1608                                                 is_buf, stonewall_flag, type, 1,
1609                                                 name, &opts, &alloc_opts, &num_opts))) {
1610                                         log_err("Error %d while parsing include file %s\n",
1611                                                 ret, filename);
1612                                         break;
1613                                 }
1614                                 continue;
1615                         }
1616
1617                         if (num_opts == alloc_opts) {
1618                                 alloc_opts <<= 1;
1619                                 opts = realloc(opts,
1620                                                 alloc_opts * sizeof(char *));
1621                         }
1622
1623                         opts[num_opts] = strdup(p);
1624                         num_opts++;
1625                 }
1626
1627                 if (nested) {
1628                         *popts = opts;
1629                         *aopts = alloc_opts;
1630                         *nopts = num_opts;
1631                         goto out;
1632                 }
1633
1634                 ret = fio_options_parse(td, opts, num_opts, dump_cmdline);
1635                 if (!ret)
1636                         ret = add_job(td, name, 0, 0, type);
1637                 else {
1638                         log_err("fio: job %s dropped\n", name);
1639                         put_job(td);
1640                 }
1641
1642                 for (i = 0; i < num_opts; i++)
1643                         free(opts[i]);
1644                 num_opts = 0;
1645         } while (!ret);
1646
1647         if (dump_cmdline)
1648                 log_info("\n");
1649
1650         i = 0;
1651         while (i < nr_job_sections) {
1652                 free(job_sections[i]);
1653                 i++;
1654         }
1655
1656         free(opts);
1657 out:
1658         free(string);
1659         if (!nested)
1660                 free(name);
1661         if (!is_buf && f != stdin)
1662                 fclose(f);
1663         return ret;
1664 }
1665
1666 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1667 {
1668         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
1669                         0, NULL, NULL, NULL, NULL);
1670 }
1671
1672 static int fill_def_thread(void)
1673 {
1674         memset(&def_thread, 0, sizeof(def_thread));
1675
1676         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1677         def_thread.o.error_dump = 1;
1678
1679         /*
1680          * fill default options
1681          */
1682         fio_fill_default_options(&def_thread);
1683         return 0;
1684 }
1685
1686 static void usage(const char *name)
1687 {
1688         printf("%s\n", fio_version_string);
1689         printf("%s [options] [job options] <job file(s)>\n", name);
1690         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1691                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1692                 "\t\t\tdiskutil,job,mutex,profile,time,net,rate,compress\n");
1693         printf("  --parse-only\t\tParse options only, don't start any IO\n");
1694         printf("  --output\t\tWrite output to file\n");
1695         printf("  --runtime\t\tRuntime in seconds\n");
1696         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1697         printf("  --minimal\t\tMinimal (terse) output\n");
1698         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1699         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1700         printf("  --version\t\tPrint version info and exit\n");
1701         printf("  --help\t\tPrint this page\n");
1702         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1703         printf("  --crctest\t\tTest speed of checksum functions\n");
1704         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1705                 " them\n");
1706         printf("  --enghelp=engine\tPrint ioengine help, or list"
1707                 " available ioengines\n");
1708         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1709                 " cmd\n");
1710         printf("  --showcmd\t\tTurn a job file into command line options\n");
1711         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1712         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1713         printf("  --eta-newline=time\tForce a new line for every 'time'");
1714         printf(" period passed\n");
1715         printf("  --status-interval=t\tForce full status dump every");
1716         printf(" 't' period passed\n");
1717         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1718                 " writes\n");
1719         printf("  --section=name\tOnly run specified section in job file\n");
1720         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1721                 " (def 1024)\n");
1722         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1723         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1724         printf("  --server=args\t\tStart a backend fio server\n");
1725         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1726         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1727         printf("  --remote-config=file\tTell fio server to load this local job file\n");
1728         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
1729                 "\t\t\t(option=system,percpu) or run unit work\n"
1730                 "\t\t\tcalibration only (option=calibrate)\n");
1731 #ifdef CONFIG_ZLIB
1732         printf("  --inflate-log=log\tInflate and output compressed log\n");
1733 #endif
1734         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
1735         printf("  --trigger-timeout=t\tExecute trigger af this time\n");
1736         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
1737         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
1738         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1739         printf("\n                   Jens Axboe <jaxboe@fusionio.com>");
1740         printf("\n                   Jens Axboe <axboe@fb.com>\n");
1741 }
1742
1743 #ifdef FIO_INC_DEBUG
1744 struct debug_level debug_levels[] = {
1745         { .name = "process",
1746           .help = "Process creation/exit logging",
1747           .shift = FD_PROCESS,
1748         },
1749         { .name = "file",
1750           .help = "File related action logging",
1751           .shift = FD_FILE,
1752         },
1753         { .name = "io",
1754           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1755           .shift = FD_IO,
1756         },
1757         { .name = "mem",
1758           .help = "Memory allocation/freeing logging",
1759           .shift = FD_MEM,
1760         },
1761         { .name = "blktrace",
1762           .help = "blktrace action logging",
1763           .shift = FD_BLKTRACE,
1764         },
1765         { .name = "verify",
1766           .help = "IO verification action logging",
1767           .shift = FD_VERIFY,
1768         },
1769         { .name = "random",
1770           .help = "Random generation logging",
1771           .shift = FD_RANDOM,
1772         },
1773         { .name = "parse",
1774           .help = "Parser logging",
1775           .shift = FD_PARSE,
1776         },
1777         { .name = "diskutil",
1778           .help = "Disk utility logging actions",
1779           .shift = FD_DISKUTIL,
1780         },
1781         { .name = "job",
1782           .help = "Logging related to creating/destroying jobs",
1783           .shift = FD_JOB,
1784         },
1785         { .name = "mutex",
1786           .help = "Mutex logging",
1787           .shift = FD_MUTEX
1788         },
1789         { .name = "profile",
1790           .help = "Logging related to profiles",
1791           .shift = FD_PROFILE,
1792         },
1793         { .name = "time",
1794           .help = "Logging related to time keeping functions",
1795           .shift = FD_TIME,
1796         },
1797         { .name = "net",
1798           .help = "Network logging",
1799           .shift = FD_NET,
1800         },
1801         { .name = "rate",
1802           .help = "Rate logging",
1803           .shift = FD_RATE,
1804         },
1805         { .name = "compress",
1806           .help = "Log compression logging",
1807           .shift = FD_COMPRESS,
1808         },
1809         { .name = NULL, },
1810 };
1811
1812 static int set_debug(const char *string)
1813 {
1814         struct debug_level *dl;
1815         char *p = (char *) string;
1816         char *opt;
1817         int i;
1818
1819         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1820                 log_info("fio: dumping debug options:");
1821                 for (i = 0; debug_levels[i].name; i++) {
1822                         dl = &debug_levels[i];
1823                         log_info("%s,", dl->name);
1824                 }
1825                 log_info("all\n");
1826                 return 1;
1827         }
1828
1829         while ((opt = strsep(&p, ",")) != NULL) {
1830                 int found = 0;
1831
1832                 if (!strncmp(opt, "all", 3)) {
1833                         log_info("fio: set all debug options\n");
1834                         fio_debug = ~0UL;
1835                         continue;
1836                 }
1837
1838                 for (i = 0; debug_levels[i].name; i++) {
1839                         dl = &debug_levels[i];
1840                         found = !strncmp(opt, dl->name, strlen(dl->name));
1841                         if (!found)
1842                                 continue;
1843
1844                         if (dl->shift == FD_JOB) {
1845                                 opt = strchr(opt, ':');
1846                                 if (!opt) {
1847                                         log_err("fio: missing job number\n");
1848                                         break;
1849                                 }
1850                                 opt++;
1851                                 fio_debug_jobno = atoi(opt);
1852                                 log_info("fio: set debug jobno %d\n",
1853                                                         fio_debug_jobno);
1854                         } else {
1855                                 log_info("fio: set debug option %s\n", opt);
1856                                 fio_debug |= (1UL << dl->shift);
1857                         }
1858                         break;
1859                 }
1860
1861                 if (!found)
1862                         log_err("fio: debug mask %s not found\n", opt);
1863         }
1864         return 0;
1865 }
1866 #else
1867 static int set_debug(const char *string)
1868 {
1869         log_err("fio: debug tracing not included in build\n");
1870         return 1;
1871 }
1872 #endif
1873
1874 static void fio_options_fill_optstring(void)
1875 {
1876         char *ostr = cmd_optstr;
1877         int i, c;
1878
1879         c = i = 0;
1880         while (l_opts[i].name) {
1881                 ostr[c++] = l_opts[i].val;
1882                 if (l_opts[i].has_arg == required_argument)
1883                         ostr[c++] = ':';
1884                 else if (l_opts[i].has_arg == optional_argument) {
1885                         ostr[c++] = ':';
1886                         ostr[c++] = ':';
1887                 }
1888                 i++;
1889         }
1890         ostr[c] = '\0';
1891 }
1892
1893 static int client_flag_set(char c)
1894 {
1895         int i;
1896
1897         i = 0;
1898         while (l_opts[i].name) {
1899                 int val = l_opts[i].val;
1900
1901                 if (c == (val & 0xff))
1902                         return (val & FIO_CLIENT_FLAG);
1903
1904                 i++;
1905         }
1906
1907         return 0;
1908 }
1909
1910 static void parse_cmd_client(void *client, char *opt)
1911 {
1912         fio_client_add_cmd_option(client, opt);
1913 }
1914
1915 static void show_closest_option(const char *name)
1916 {
1917         int best_option, best_distance;
1918         int i, distance;
1919
1920         while (*name == '-')
1921                 name++;
1922
1923         best_option = -1;
1924         best_distance = INT_MAX;
1925         i = 0;
1926         while (l_opts[i].name) {
1927                 distance = string_distance(name, l_opts[i].name);
1928                 if (distance < best_distance) {
1929                         best_distance = distance;
1930                         best_option = i;
1931                 }
1932                 i++;
1933         }
1934
1935         if (best_option != -1)
1936                 log_err("Did you mean %s?\n", l_opts[best_option].name);
1937 }
1938
1939 int parse_cmd_line(int argc, char *argv[], int client_type)
1940 {
1941         struct thread_data *td = NULL;
1942         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1943         char *ostr = cmd_optstr;
1944         void *pid_file = NULL;
1945         void *cur_client = NULL;
1946         int backend = 0;
1947
1948         /*
1949          * Reset optind handling, since we may call this multiple times
1950          * for the backend.
1951          */
1952         optind = 1;
1953
1954         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1955                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1956                         parse_cmd_client(cur_client, argv[optind - 1]);
1957                         c &= ~FIO_CLIENT_FLAG;
1958                 }
1959
1960                 switch (c) {
1961                 case 'a':
1962                         smalloc_pool_size = atoi(optarg);
1963                         break;
1964                 case 't':
1965                         if (check_str_time(optarg, &def_timeout, 1)) {
1966                                 log_err("fio: failed parsing time %s\n", optarg);
1967                                 do_exit++;
1968                                 exit_val = 1;
1969                         }
1970                         break;
1971                 case 'l':
1972                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
1973                         do_exit++;
1974                         exit_val = 1;
1975                         break;
1976                 case 'b':
1977                         write_bw_log = 1;
1978                         break;
1979                 case 'o':
1980                         if (f_out && f_out != stdout)
1981                                 fclose(f_out);
1982
1983                         f_out = fopen(optarg, "w+");
1984                         if (!f_out) {
1985                                 perror("fopen output");
1986                                 exit(1);
1987                         }
1988                         f_err = f_out;
1989                         break;
1990                 case 'm':
1991                         output_format = FIO_OUTPUT_TERSE;
1992                         break;
1993                 case 'F':
1994                         if (!optarg) {
1995                                 log_err("fio: missing --output-format argument\n");
1996                                 exit_val = 1;
1997                                 do_exit++;
1998                                 break;
1999                         }
2000                         if (!strcmp(optarg, "minimal") ||
2001                             !strcmp(optarg, "terse") ||
2002                             !strcmp(optarg, "csv"))
2003                                 output_format = FIO_OUTPUT_TERSE;
2004                         else if (!strcmp(optarg, "json"))
2005                                 output_format = FIO_OUTPUT_JSON;
2006                         else
2007                                 output_format = FIO_OUTPUT_NORMAL;
2008                         break;
2009                 case 'f':
2010                         append_terse_output = 1;
2011                         break;
2012                 case 'h':
2013                         did_arg = 1;
2014                         if (!cur_client) {
2015                                 usage(argv[0]);
2016                                 do_exit++;
2017                         }
2018                         break;
2019                 case 'c':
2020                         did_arg = 1;
2021                         if (!cur_client) {
2022                                 fio_show_option_help(optarg);
2023                                 do_exit++;
2024                         }
2025                         break;
2026                 case 'i':
2027                         did_arg = 1;
2028                         if (!cur_client) {
2029                                 fio_show_ioengine_help(optarg);
2030                                 do_exit++;
2031                         }
2032                         break;
2033                 case 's':
2034                         did_arg = 1;
2035                         dump_cmdline = 1;
2036                         break;
2037                 case 'r':
2038                         read_only = 1;
2039                         break;
2040                 case 'v':
2041                         did_arg = 1;
2042                         if (!cur_client) {
2043                                 log_info("%s\n", fio_version_string);
2044                                 do_exit++;
2045                         }
2046                         break;
2047                 case 'V':
2048                         terse_version = atoi(optarg);
2049                         if (!(terse_version == 2 || terse_version == 3 ||
2050                              terse_version == 4)) {
2051                                 log_err("fio: bad terse version format\n");
2052                                 exit_val = 1;
2053                                 do_exit++;
2054                         }
2055                         break;
2056                 case 'e':
2057                         if (!strcmp("always", optarg))
2058                                 eta_print = FIO_ETA_ALWAYS;
2059                         else if (!strcmp("never", optarg))
2060                                 eta_print = FIO_ETA_NEVER;
2061                         break;
2062                 case 'E': {
2063                         long long t = 0;
2064
2065                         if (check_str_time(optarg, &t, 1)) {
2066                                 log_err("fio: failed parsing eta time %s\n", optarg);
2067                                 exit_val = 1;
2068                                 do_exit++;
2069                         }
2070                         eta_new_line = t / 1000;
2071                         break;
2072                         }
2073                 case 'd':
2074                         if (set_debug(optarg))
2075                                 do_exit++;
2076                         break;
2077                 case 'P':
2078                         did_arg = 1;
2079                         parse_only = 1;
2080                         break;
2081                 case 'x': {
2082                         size_t new_size;
2083
2084                         if (!strcmp(optarg, "global")) {
2085                                 log_err("fio: can't use global as only "
2086                                         "section\n");
2087                                 do_exit++;
2088                                 exit_val = 1;
2089                                 break;
2090                         }
2091                         new_size = (nr_job_sections + 1) * sizeof(char *);
2092                         job_sections = realloc(job_sections, new_size);
2093                         job_sections[nr_job_sections] = strdup(optarg);
2094                         nr_job_sections++;
2095                         break;
2096                         }
2097 #ifdef CONFIG_ZLIB
2098                 case 'X':
2099                         exit_val = iolog_file_inflate(optarg);
2100                         did_arg++;
2101                         do_exit++;
2102                         break;
2103 #endif
2104                 case 'p':
2105                         did_arg = 1;
2106                         if (exec_profile)
2107                                 free(exec_profile);
2108                         exec_profile = strdup(optarg);
2109                         break;
2110                 case FIO_GETOPT_JOB: {
2111                         const char *opt = l_opts[lidx].name;
2112                         char *val = optarg;
2113
2114                         if (!strncmp(opt, "name", 4) && td) {
2115                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2116                                 if (ret)
2117                                         goto out_free;
2118                                 td = NULL;
2119                                 did_arg = 1;
2120                         }
2121                         if (!td) {
2122                                 int is_section = !strncmp(opt, "name", 4);
2123                                 int global = 0;
2124
2125                                 if (!is_section || !strncmp(val, "global", 6))
2126                                         global = 1;
2127
2128                                 if (is_section && skip_this_section(val))
2129                                         continue;
2130
2131                                 td = get_new_job(global, &def_thread, 1, NULL);
2132                                 if (!td || ioengine_load(td)) {
2133                                         if (td) {
2134                                                 put_job(td);
2135                                                 td = NULL;
2136                                         }
2137                                         do_exit++;
2138                                         break;
2139                                 }
2140                                 fio_options_set_ioengine_opts(l_opts, td);
2141                         }
2142
2143                         if ((!val || !strlen(val)) &&
2144                             l_opts[lidx].has_arg == required_argument) {
2145                                 log_err("fio: option %s requires an argument\n", opt);
2146                                 ret = 1;
2147                         } else
2148                                 ret = fio_cmd_option_parse(td, opt, val);
2149
2150                         if (ret) {
2151                                 if (td) {
2152                                         put_job(td);
2153                                         td = NULL;
2154                                 }
2155                                 do_exit++;
2156                         }
2157
2158                         if (!ret && !strcmp(opt, "ioengine")) {
2159                                 free_ioengine(td);
2160                                 if (ioengine_load(td)) {
2161                                         put_job(td);
2162                                         td = NULL;
2163                                         do_exit++;
2164                                         break;
2165                                 }
2166                                 fio_options_set_ioengine_opts(l_opts, td);
2167                         }
2168                         break;
2169                 }
2170                 case FIO_GETOPT_IOENGINE: {
2171                         const char *opt = l_opts[lidx].name;
2172                         char *val = optarg;
2173
2174                         if (!td)
2175                                 break;
2176
2177                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2178                         break;
2179                 }
2180                 case 'w':
2181                         warnings_fatal = 1;
2182                         break;
2183                 case 'j':
2184                         max_jobs = atoi(optarg);
2185                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2186                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2187                                 do_exit++;
2188                                 exit_val = 1;
2189                         }
2190                         break;
2191                 case 'S':
2192                         did_arg = 1;
2193 #ifndef CONFIG_NO_SHM
2194                         if (nr_clients) {
2195                                 log_err("fio: can't be both client and server\n");
2196                                 do_exit++;
2197                                 exit_val = 1;
2198                                 break;
2199                         }
2200                         if (optarg)
2201                                 fio_server_set_arg(optarg);
2202                         is_backend = 1;
2203                         backend = 1;
2204 #else
2205                         log_err("fio: client/server requires SHM support\n");
2206                         do_exit++;
2207                         exit_val = 1;
2208 #endif
2209                         break;
2210                 case 'D':
2211                         if (pid_file)
2212                                 free(pid_file);
2213                         pid_file = strdup(optarg);
2214                         break;
2215                 case 'I':
2216                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2217                                 /* exit on error and calibration only */
2218                                 did_arg = 1;
2219                                 do_exit++;
2220                                 if (ret == -1)
2221                                         exit_val = 1;
2222                         }
2223                         break;
2224                 case 'C':
2225                         did_arg = 1;
2226                         if (is_backend) {
2227                                 log_err("fio: can't be both client and server\n");
2228                                 do_exit++;
2229                                 exit_val = 1;
2230                                 break;
2231                         }
2232                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2233                                 log_err("fio: failed adding client %s\n", optarg);
2234                                 do_exit++;
2235                                 exit_val = 1;
2236                                 break;
2237                         }
2238                         /*
2239                          * If the next argument exists and isn't an option,
2240                          * assume it's a job file for this client only.
2241                          */
2242                         while (optind < argc) {
2243                                 if (!strncmp(argv[optind], "--", 2) ||
2244                                     !strncmp(argv[optind], "-", 1))
2245                                         break;
2246
2247                                 if (fio_client_add_ini_file(cur_client, argv[optind], 0))
2248                                         break;
2249                                 optind++;
2250                         }
2251                         break;
2252                 case 'R':
2253                         did_arg = 1;
2254                         if (fio_client_add_ini_file(cur_client, optarg, 1)) {
2255                                 do_exit++;
2256                                 exit_val = 1;
2257                         }
2258                         break;
2259                 case 'T':
2260                         did_arg = 1;
2261                         do_exit++;
2262                         exit_val = fio_monotonic_clocktest(1);
2263                         break;
2264                 case 'G':
2265                         did_arg = 1;
2266                         do_exit++;
2267                         exit_val = fio_crctest(optarg);
2268                         break;
2269                 case 'L': {
2270                         long long val;
2271
2272                         if (check_str_time(optarg, &val, 1)) {
2273                                 log_err("fio: failed parsing time %s\n", optarg);
2274                                 do_exit++;
2275                                 exit_val = 1;
2276                                 break;
2277                         }
2278                         status_interval = val / 1000;
2279                         break;
2280                         }
2281                 case 'W':
2282                         if (trigger_file)
2283                                 free(trigger_file);
2284                         trigger_file = strdup(optarg);
2285                         break;
2286                 case 'H':
2287                         if (trigger_cmd)
2288                                 free(trigger_cmd);
2289                         trigger_cmd = strdup(optarg);
2290                         break;
2291                 case 'J':
2292                         if (trigger_remote_cmd)
2293                                 free(trigger_remote_cmd);
2294                         trigger_remote_cmd = strdup(optarg);
2295                         break;
2296                 case 'B':
2297                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2298                                 log_err("fio: failed parsing time %s\n", optarg);
2299                                 do_exit++;
2300                                 exit_val = 1;
2301                         }
2302                         trigger_timeout /= 1000000;
2303                         break;
2304                 case '?':
2305                         log_err("%s: unrecognized option '%s'\n", argv[0],
2306                                                         argv[optind - 1]);
2307                         show_closest_option(argv[optind - 1]);
2308                 default:
2309                         do_exit++;
2310                         exit_val = 1;
2311                         break;
2312                 }
2313                 if (do_exit)
2314                         break;
2315         }
2316
2317         if (do_exit && !(is_backend || nr_clients))
2318                 exit(exit_val);
2319
2320         if (nr_clients && fio_clients_connect())
2321                 exit(1);
2322
2323         if (is_backend && backend)
2324                 return fio_start_server(pid_file);
2325         else if (pid_file)
2326                 free(pid_file);
2327
2328         if (td) {
2329                 if (!ret) {
2330                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2331                         if (ret)
2332                                 did_arg = 1;
2333                 }
2334         }
2335
2336         while (!ret && optind < argc) {
2337                 ini_idx++;
2338                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2339                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2340                 optind++;
2341         }
2342
2343 out_free:
2344         if (pid_file)
2345                 free(pid_file);
2346
2347         return ini_idx;
2348 }
2349
2350 int fio_init_options(void)
2351 {
2352         f_out = stdout;
2353         f_err = stderr;
2354
2355         fio_options_fill_optstring();
2356         fio_options_dup_and_init(l_opts);
2357
2358         atexit(free_shm);
2359
2360         if (fill_def_thread())
2361                 return 1;
2362
2363         return 0;
2364 }
2365
2366 extern int fio_check_options(struct thread_options *);
2367
2368 int parse_options(int argc, char *argv[])
2369 {
2370         const int type = FIO_CLIENT_TYPE_CLI;
2371         int job_files, i;
2372
2373         if (fio_init_options())
2374                 return 1;
2375         if (fio_test_cconv(&def_thread.o))
2376                 log_err("fio: failed internal cconv test\n");
2377
2378         job_files = parse_cmd_line(argc, argv, type);
2379
2380         if (job_files > 0) {
2381                 for (i = 0; i < job_files; i++) {
2382                         if (i && fill_def_thread())
2383                                 return 1;
2384                         if (nr_clients) {
2385                                 if (fio_clients_send_ini(ini_file[i]))
2386                                         return 1;
2387                                 free(ini_file[i]);
2388                         } else if (!is_backend) {
2389                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2390                                         return 1;
2391                                 free(ini_file[i]);
2392                         }
2393                 }
2394         } else if (nr_clients) {
2395                 if (fill_def_thread())
2396                         return 1;
2397                 if (fio_clients_send_ini(NULL))
2398                         return 1;
2399         }
2400
2401         free(ini_file);
2402         fio_options_free(&def_thread);
2403         filesetup_mem_free();
2404
2405         if (!thread_number) {
2406                 if (parse_dryrun())
2407                         return 0;
2408                 if (exec_profile)
2409                         return 0;
2410                 if (is_backend || nr_clients)
2411                         return 0;
2412                 if (did_arg)
2413                         return 0;
2414
2415                 log_err("No jobs(s) defined\n\n");
2416
2417                 if (!did_arg) {
2418                         usage(argv[0]);
2419                         return 1;
2420                 }
2421
2422                 return 0;
2423         }
2424
2425         if (output_format == FIO_OUTPUT_NORMAL)
2426                 log_info("%s\n", fio_version_string);
2427
2428         return 0;
2429 }
2430
2431 void options_default_fill(struct thread_options *o)
2432 {
2433         memcpy(o, &def_thread.o, sizeof(*o));
2434 }