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 disabled\n");
 600                 o->verify = VERIFY_NONE;
 601                 ret = warnings_fatal;
 602         }
 603         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 604                 log_err("fio: bs_unaligned may not work with raw io\n");
 605
 606         /*
 607          * thinktime_spin must be less than thinktime
 608          */
 609         if (o->thinktime_spin > o->thinktime)
 610                 o->thinktime_spin = o->thinktime;
 611
 612         /*
 613          * The low water mark cannot be bigger than the iodepth
 614          */
 615         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 616                 o->iodepth_low = o->iodepth;
 617
 618         /*
 619          * If batch number isn't set, default to the same as iodepth
 620          */
 621         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 622                 o->iodepth_batch = o->iodepth;
 623
 624         if (o->nr_files > td->files_index)
 625                 o->nr_files = td->files_index;
 626
 627         if (o->open_files > o->nr_files || !o->open_files)
 628                 o->open_files = o->nr_files;
 629
 630         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 631             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 632             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 633             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 634                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 635                 ret = 1;
 636         }
 637         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 638             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 639             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 640             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 641             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 642             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 643                 log_err("fio: minimum rate exceeds rate\n");
 644                 ret = 1;
 645         }
 646
 647         if (!o->timeout && o->time_based) {
 648                 log_err("fio: time_based requires a runtime/timeout setting\n");
 649                 o->time_based = 0;
 650                 ret = warnings_fatal;
 651         }
 652
 653         if (o->fill_device && !o->size)
 654                 o->size = -1ULL;
 655
 656         if (o->verify != VERIFY_NONE) {
 657                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 658                         log_info("Multiple writers may overwrite blocks that "
 659                                 "belong to other jobs. This can cause "
 660                                 "verification failures.\n");
 661                         ret = warnings_fatal;
 662                 }
 663
 664                 o->refill_buffers = 1;
 665                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 666                     !o->verify_interval)
 667                         o->verify_interval = o->min_bs[DDIR_WRITE];
 668
 669                 /*
 670                  * Verify interval must be smaller or equal to the
 671                  * write size.
 672                  */
 673                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 674                         o->verify_interval = o->min_bs[DDIR_WRITE];
 675                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 676                         o->verify_interval = o->min_bs[DDIR_READ];
 677         }
 678
 679         if (o->pre_read) {
 680                 o->invalidate_cache = 0;
 681                 if (td->io_ops->flags & FIO_PIPEIO) {
 682                         log_info("fio: cannot pre-read files with an IO engine"
 683                                  " that isn't seekable. Pre-read disabled.\n");
 684                         ret = warnings_fatal;
 685                 }
 686         }
 687
 688         if (!o->unit_base) {
 689                 if (td->io_ops->flags & FIO_BIT_BASED)
 690                         o->unit_base = 1;
 691                 else
 692                         o->unit_base = 8;
 693         }
 694
 695 #ifndef CONFIG_FDATASYNC
 696         if (o->fdatasync_blocks) {
 697                 log_info("fio: this platform does not support fdatasync()"
 698                          " falling back to using fsync().  Use the 'fsync'"
 699                          " option instead of 'fdatasync' to get rid of"
 700                          " this warning\n");
 701                 o->fsync_blocks = o->fdatasync_blocks;
 702                 o->fdatasync_blocks = 0;
 703                 ret = warnings_fatal;
 704         }
 705 #endif
 706
 707 #ifdef WIN32
 708         /*
 709          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 710          * so fail if we're passed those flags
 711          */
 712         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 713                 log_err("fio: Windows does not support direct or non-buffered io with"
 714                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 715                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 716                 ret = 1;
 717         }
 718 #endif
 719
 720         /*
 721          * For fully compressible data, just zero them at init time.
 722          * It's faster than repeatedly filling it.
 723          */
 724         if (td->o.compress_percentage == 100) {
 725                 td->o.zero_buffers = 1;
 726                 td->o.compress_percentage = 0;
 727         }
 728
 729         /*
 730          * Using a non-uniform random distribution excludes usage of
 731          * a random map
 732          */
 733         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
 734                 td->o.norandommap = 1;
 735
 736         /*
 737          * If size is set but less than the min block size, complain
 738          */
 739         if (o->size && o->size < td_min_bs(td)) {
 740                 log_err("fio: size too small, must be larger than the IO size: %llu\n", (unsigned long long) o->size);
 741                 ret = 1;
 742         }
 743
 744         /*
 745          * O_ATOMIC implies O_DIRECT
 746          */
 747         if (td->o.oatomic)
 748                 td->o.odirect = 1;
 749
 750         /*
 751          * If randseed is set, that overrides randrepeat
 752          */
 753         if (td->o.rand_seed)
 754                 td->o.rand_repeatable = 0;
 755
 756         if ((td->io_ops->flags & FIO_NOEXTEND) && td->o.file_append) {
 757                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 758                 ret = 1;
 759         }
 760
 761         if (fio_option_is_set(o, gtod_cpu)) {
 762                 fio_gtod_init();
 763                 fio_gtod_set_cpu(o->gtod_cpu);
 764                 fio_gtod_offload = 1;
 765         }
 766
 767         return ret;
 768 }
 769
 770 /*
 771  * This function leaks the buffer
 772  */
 773 char *fio_uint_to_kmg(unsigned int val)
 774 {
 775         char *buf = malloc(32);
 776         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 777         char *p = post;
 778
 779         do {
 780                 if (val & 1023)
 781                         break;
 782
 783                 val >>= 10;
 784                 p++;
 785         } while (*p);
 786
 787         snprintf(buf, 32, "%u%c", val, *p);
 788         return buf;
 789 }
 790
 791 /* External engines are specified by "external:name.o") */
 792 static const char *get_engine_name(const char *str)
 793 {
 794         char *p = strstr(str, ":");
 795
 796         if (!p)
 797                 return str;
 798
 799         p++;
 800         strip_blank_front(&p);
 801         strip_blank_end(p);
 802         return p;
 803 }
 804
 805 static int exists_and_not_file(const char *filename)
 806 {
 807         struct stat sb;
 808
 809         if (lstat(filename, &sb) == -1)
 810                 return 0;
 811
 812         /* \\.\ is the device namespace in Windows, where every file
 813          * is a device node */
 814         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 815                 return 0;
 816
 817         return 1;
 818 }
 819
 820 static void td_fill_rand_seeds_internal(struct thread_data *td)
 821 {
 822         init_rand_seed(&td->bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
 823         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
 824         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
 825
 826         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 827                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
 828
 829         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
 830         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
 831         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY]);
 832
 833         if (!td_random(td))
 834                 return;
 835
 836         if (td->o.rand_repeatable)
 837                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 838
 839         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
 840         init_rand_seed(&td->seq_rand_state[DDIR_READ], td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF]);
 841         init_rand_seed(&td->seq_rand_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF]);
 842         init_rand_seed(&td->seq_rand_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF]);
 843 }
 844
 845 void td_fill_rand_seeds(struct thread_data *td)
 846 {
 847         if (td->o.allrand_repeatable) {
 848                 unsigned int i;
 849
 850                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
 851                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
 852                                 + i;
 853         }
 854
 855         td_fill_rand_seeds_internal(td);
 856
 857         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
 858         frand_copy(&td->buf_state_prev, &td->buf_state);
 859
 860         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF]);
 861 }
 862
 863 /*
 864  * Initializes the ioengine configured for a job, if it has not been done so
 865  * already.
 866  */
 867 int ioengine_load(struct thread_data *td)
 868 {
 869         const char *engine;
 870
 871         /*
 872          * Engine has already been loaded.
 873          */
 874         if (td->io_ops)
 875                 return 0;
 876         if (!td->o.ioengine) {
 877                 log_err("fio: internal fault, no IO engine specified\n");
 878                 return 1;
 879         }
 880
 881         engine = get_engine_name(td->o.ioengine);
 882         td->io_ops = load_ioengine(td, engine);
 883         if (!td->io_ops) {
 884                 log_err("fio: failed to load engine %s\n", engine);
 885                 return 1;
 886         }
 887
 888         if (td->io_ops->option_struct_size && td->io_ops->options) {
 889                 /*
 890                  * In cases where td->eo is set, clone it for a child thread.
 891                  * This requires that the parent thread has the same ioengine,
 892                  * but that requirement must be enforced by the code which
 893                  * cloned the thread.
 894                  */
 895                 void *origeo = td->eo;
 896                 /*
 897                  * Otherwise use the default thread options.
 898                  */
 899                 if (!origeo && td != &def_thread && def_thread.eo &&
 900                     def_thread.io_ops->options == td->io_ops->options)
 901                         origeo = def_thread.eo;
 902
 903                 options_init(td->io_ops->options);
 904                 td->eo = malloc(td->io_ops->option_struct_size);
 905                 /*
 906                  * Use the default thread as an option template if this uses the
 907                  * same options structure and there are non-default options
 908                  * used.
 909                  */
 910                 if (origeo) {
 911                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 912                         options_mem_dupe(td->eo, td->io_ops->options);
 913                 } else {
 914                         memset(td->eo, 0, td->io_ops->option_struct_size);
 915                         fill_default_options(td->eo, td->io_ops->options);
 916                 }
 917                 *(struct thread_data **)td->eo = td;
 918         }
 919
 920         return 0;
 921 }
 922
 923 static void init_flags(struct thread_data *td)
 924 {
 925         struct thread_options *o = &td->o;
 926
 927         if (o->verify_backlog)
 928                 td->flags |= TD_F_VER_BACKLOG;
 929         if (o->trim_backlog)
 930                 td->flags |= TD_F_TRIM_BACKLOG;
 931         if (o->read_iolog_file)
 932                 td->flags |= TD_F_READ_IOLOG;
 933         if (o->refill_buffers)
 934                 td->flags |= TD_F_REFILL_BUFFERS;
 935         /*
 936          * Always scramble buffers if asked to
 937          */
 938         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
 939                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
 940         /*
 941          * But also scramble buffers, unless we were explicitly asked
 942          * to zero them.
 943          */
 944         if (o->scramble_buffers && !(o->zero_buffers &&
 945             fio_option_is_set(o, zero_buffers)))
 946                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
 947         if (o->verify != VERIFY_NONE)
 948                 td->flags |= TD_F_VER_NONE;
 949 }
 950
 951 static int setup_random_seeds(struct thread_data *td)
 952 {
 953         unsigned long seed;
 954         unsigned int i;
 955
 956         if (!td->o.rand_repeatable && !td->o.rand_seed)
 957                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
 958
 959         if (!td->o.rand_seed)
 960                 seed = 0x89;
 961         else
 962                 seed = td->o.rand_seed;
 963
 964         for (i = 0; i < 4; i++)
 965                 seed *= 0x9e370001UL;
 966
 967         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
 968                 td->rand_seeds[i] = seed;
 969                 seed *= 0x9e370001UL;
 970         }
 971
 972         td_fill_rand_seeds(td);
 973         return 0;
 974 }
 975
 976 enum {
 977         FPRE_NONE = 0,
 978         FPRE_JOBNAME,
 979         FPRE_JOBNUM,
 980         FPRE_FILENUM
 981 };
 982
 983 static struct fpre_keyword {
 984         const char *keyword;
 985         size_t strlen;
 986         int key;
 987 } fpre_keywords[] = {
 988         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
 989         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
 990         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
 991         { .keyword = NULL, },
 992         };
 993
 994 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
 995                            const char *jobname, int jobnum, int filenum)
 996 {
 997         struct fpre_keyword *f;
 998         char copy[PATH_MAX];
 999         size_t dst_left = PATH_MAX - 1;
1000
1001         if (!o->filename_format || !strlen(o->filename_format)) {
1002                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1003                 return NULL;
1004         }
1005
1006         for (f = &fpre_keywords[0]; f->keyword; f++)
1007                 f->strlen = strlen(f->keyword);
1008
1009         buf[buf_size - 1] = '\0';
1010         strncpy(buf, o->filename_format, buf_size - 1);
1011
1012         memset(copy, 0, sizeof(copy));
1013         for (f = &fpre_keywords[0]; f->keyword; f++) {
1014                 do {
1015                         size_t pre_len, post_start = 0;
1016                         char *str, *dst = copy;
1017
1018                         str = strcasestr(buf, f->keyword);
1019                         if (!str)
1020                                 break;
1021
1022                         pre_len = str - buf;
1023                         if (strlen(str) != f->strlen)
1024                                 post_start = pre_len + f->strlen;
1025
1026                         if (pre_len) {
1027                                 strncpy(dst, buf, pre_len);
1028                                 dst += pre_len;
1029                                 dst_left -= pre_len;
1030                         }
1031
1032                         switch (f->key) {
1033                         case FPRE_JOBNAME: {
1034                                 int ret;
1035
1036                                 ret = snprintf(dst, dst_left, "%s", jobname);
1037                                 if (ret < 0)
1038                                         break;
1039                                 else if (ret > dst_left) {
1040                                         log_err("fio: truncated filename\n");
1041                                         dst += dst_left;
1042                                         dst_left = 0;
1043                                 } else {
1044                                         dst += ret;
1045                                         dst_left -= ret;
1046                                 }
1047                                 break;
1048                                 }
1049                         case FPRE_JOBNUM: {
1050                                 int ret;
1051
1052                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1053                                 if (ret < 0)
1054                                         break;
1055                                 else if (ret > dst_left) {
1056                                         log_err("fio: truncated filename\n");
1057                                         dst += dst_left;
1058                                         dst_left = 0;
1059                                 } else {
1060                                         dst += ret;
1061                                         dst_left -= ret;
1062                                 }
1063                                 break;
1064                                 }
1065                         case FPRE_FILENUM: {
1066                                 int ret;
1067
1068                                 ret = snprintf(dst, dst_left, "%d", filenum);
1069                                 if (ret < 0)
1070                                         break;
1071                                 else if (ret > dst_left) {
1072                                         log_err("fio: truncated filename\n");
1073                                         dst += dst_left;
1074                                         dst_left = 0;
1075                                 } else {
1076                                         dst += ret;
1077                                         dst_left -= ret;
1078                                 }
1079                                 break;
1080                                 }
1081                         default:
1082                                 assert(0);
1083                                 break;
1084                         }
1085
1086                         if (post_start)
1087                                 strncpy(dst, buf + post_start, dst_left);
1088
1089                         strncpy(buf, copy, buf_size - 1);
1090                 } while (1);
1091         }
1092
1093         return buf;
1094 }
1095
1096 int parse_dryrun(void)
1097 {
1098         return dump_cmdline || parse_only;
1099 }
1100
1101 /*
1102  * Adds a job to the list of things todo. Sanitizes the various options
1103  * to make sure we don't have conflicts, and initializes various
1104  * members of td.
1105  */
1106 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1107                    int recursed, int client_type)
1108 {
1109         unsigned int i;
1110         char fname[PATH_MAX];
1111         int numjobs, file_alloced;
1112         struct thread_options *o = &td->o;
1113         char logname[PATH_MAX + 32];
1114
1115         /*
1116          * the def_thread is just for options, it's not a real job
1117          */
1118         if (td == &def_thread)
1119                 return 0;
1120
1121         init_flags(td);
1122
1123         /*
1124          * if we are just dumping the output command line, don't add the job
1125          */
1126         if (parse_dryrun()) {
1127                 put_job(td);
1128                 return 0;
1129         }
1130
1131         td->client_type = client_type;
1132
1133         if (profile_td_init(td))
1134                 goto err;
1135
1136         if (ioengine_load(td))
1137                 goto err;
1138
1139         if (o->odirect)
1140                 td->io_ops->flags |= FIO_RAWIO;
1141
1142         file_alloced = 0;
1143         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1144                 file_alloced = 1;
1145
1146                 if (o->nr_files == 1 && exists_and_not_file(jobname))
1147                         add_file(td, jobname, job_add_num, 0);
1148                 else {
1149                         for (i = 0; i < o->nr_files; i++)
1150                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1151                 }
1152         }
1153
1154         if (fixup_options(td))
1155                 goto err;
1156
1157         flow_init_job(td);
1158
1159         /*
1160          * IO engines only need this for option callbacks, and the address may
1161          * change in subprocesses.
1162          */
1163         if (td->eo)
1164                 *(struct thread_data **)td->eo = NULL;
1165
1166         if (td->io_ops->flags & FIO_DISKLESSIO) {
1167                 struct fio_file *f;
1168
1169                 for_each_file(td, f, i)
1170                         f->real_file_size = -1ULL;
1171         }
1172
1173         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1174
1175         td->ts.clat_percentiles = o->clat_percentiles;
1176         td->ts.percentile_precision = o->percentile_precision;
1177         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1178
1179         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1180                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1181                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1182                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1183                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1184         }
1185         td->ddir_seq_nr = o->ddir_seq_nr;
1186
1187         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1188                 prev_group_jobs = 0;
1189                 groupid++;
1190         }
1191
1192         td->groupid = groupid;
1193         prev_group_jobs++;
1194
1195         if (setup_random_seeds(td)) {
1196                 td_verror(td, errno, "init_random_state");
1197                 goto err;
1198         }
1199
1200         if (setup_rate(td))
1201                 goto err;
1202
1203         if (o->lat_log_file) {
1204                 struct log_params p = {
1205                         .td = td,
1206                         .avg_msec = o->log_avg_msec,
1207                         .log_type = IO_LOG_TYPE_LAT,
1208                         .log_offset = o->log_offset,
1209                         .log_gz = o->log_gz,
1210                         .log_gz_store = o->log_gz_store,
1211                 };
1212                 const char *suf;
1213
1214                 if (p.log_gz_store)
1215                         suf = "log.fz";
1216                 else
1217                         suf = "log";
1218
1219                 snprintf(logname, sizeof(logname), "%s_lat.%d.%s",
1220                                 o->lat_log_file, td->thread_number, suf);
1221                 setup_log(&td->lat_log, &p, logname);
1222                 snprintf(logname, sizeof(logname), "%s_slat.%d.%s",
1223                                 o->lat_log_file, td->thread_number, suf);
1224                 setup_log(&td->slat_log, &p, logname);
1225                 snprintf(logname, sizeof(logname), "%s_clat.%d.%s",
1226                                 o->lat_log_file, td->thread_number, suf);
1227                 setup_log(&td->clat_log, &p, logname);
1228         }
1229         if (o->bw_log_file) {
1230                 struct log_params p = {
1231                         .td = td,
1232                         .avg_msec = o->log_avg_msec,
1233                         .log_type = IO_LOG_TYPE_BW,
1234                         .log_offset = o->log_offset,
1235                         .log_gz = o->log_gz,
1236                         .log_gz_store = o->log_gz_store,
1237                 };
1238                 const char *suf;
1239
1240                 if (p.log_gz_store)
1241                         suf = "log.fz";
1242                 else
1243                         suf = "log";
1244
1245                 snprintf(logname, sizeof(logname), "%s_bw.%d.%s",
1246                                 o->bw_log_file, td->thread_number, suf);
1247                 setup_log(&td->bw_log, &p, logname);
1248         }
1249         if (o->iops_log_file) {
1250                 struct log_params p = {
1251                         .td = td,
1252                         .avg_msec = o->log_avg_msec,
1253                         .log_type = IO_LOG_TYPE_IOPS,
1254                         .log_offset = o->log_offset,
1255                         .log_gz = o->log_gz,
1256                         .log_gz_store = o->log_gz_store,
1257                 };
1258                 const char *suf;
1259
1260                 if (p.log_gz_store)
1261                         suf = "log.fz";
1262                 else
1263                         suf = "log";
1264
1265                 snprintf(logname, sizeof(logname), "%s_iops.%d.%s",
1266                                 o->iops_log_file, td->thread_number, suf);
1267                 setup_log(&td->iops_log, &p, logname);
1268         }
1269
1270         if (!o->name)
1271                 o->name = strdup(jobname);
1272
1273         if (output_format == FIO_OUTPUT_NORMAL) {
1274                 if (!job_add_num) {
1275                         if (is_backend && !recursed)
1276                                 fio_server_send_add_job(td);
1277
1278                         if (!(td->io_ops->flags & FIO_NOIO)) {
1279                                 char *c1, *c2, *c3, *c4;
1280                                 char *c5 = NULL, *c6 = NULL;
1281
1282                                 c1 = fio_uint_to_kmg(o->min_bs[DDIR_READ]);
1283                                 c2 = fio_uint_to_kmg(o->max_bs[DDIR_READ]);
1284                                 c3 = fio_uint_to_kmg(o->min_bs[DDIR_WRITE]);
1285                                 c4 = fio_uint_to_kmg(o->max_bs[DDIR_WRITE]);
1286
1287                                 if (!o->bs_is_seq_rand) {
1288                                         c5 = fio_uint_to_kmg(o->min_bs[DDIR_TRIM]);
1289                                         c6 = fio_uint_to_kmg(o->max_bs[DDIR_TRIM]);
1290                                 }
1291
1292                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1293                                                         td->groupid,
1294                                                         ddir_str(o->td_ddir));
1295
1296                                 if (o->bs_is_seq_rand)
1297                                         log_info("bs(seq/rand)=%s-%s/%s-%s, ",
1298                                                         c1, c2, c3, c4);
1299                                 else
1300                                         log_info("bs=%s-%s/%s-%s/%s-%s, ",
1301                                                         c1, c2, c3, c4, c5, c6);
1302
1303                                 log_info("ioengine=%s, iodepth=%u\n",
1304                                                 td->io_ops->name, o->iodepth);
1305
1306                                 free(c1);
1307                                 free(c2);
1308                                 free(c3);
1309                                 free(c4);
1310                                 free(c5);
1311                                 free(c6);
1312                         }
1313                 } else if (job_add_num == 1)
1314                         log_info("...\n");
1315         }
1316
1317         /*
1318          * recurse add identical jobs, clear numjobs and stonewall options
1319          * as they don't apply to sub-jobs
1320          */
1321         numjobs = o->numjobs;
1322         while (--numjobs) {
1323                 struct thread_data *td_new = get_new_job(0, td, 1, jobname);
1324
1325                 if (!td_new)
1326                         goto err;
1327
1328                 td_new->o.numjobs = 1;
1329                 td_new->o.stonewall = 0;
1330                 td_new->o.new_group = 0;
1331                 td_new->subjob_number = numjobs;
1332
1333                 if (file_alloced) {
1334                         if (td_new->files) {
1335                                 struct fio_file *f;
1336                                 for_each_file(td_new, f, i) {
1337                                         if (f->file_name)
1338                                                 sfree(f->file_name);
1339                                         sfree(f);
1340                                 }
1341                                 free(td_new->files);
1342                                 td_new->files = NULL;
1343                         }
1344                         td_new->files_index = 0;
1345                         td_new->files_size = 0;
1346                         if (td_new->o.filename) {
1347                                 free(td_new->o.filename);
1348                                 td_new->o.filename = NULL;
1349                         }
1350                 }
1351
1352                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1353                         goto err;
1354         }
1355
1356         return 0;
1357 err:
1358         put_job(td);
1359         return -1;
1360 }
1361
1362 /*
1363  * Parse as if 'o' was a command line
1364  */
1365 void add_job_opts(const char **o, int client_type)
1366 {
1367         struct thread_data *td, *td_parent;
1368         int i, in_global = 1;
1369         char jobname[32];
1370
1371         i = 0;
1372         td_parent = td = NULL;
1373         while (o[i]) {
1374                 if (!strncmp(o[i], "name", 4)) {
1375                         in_global = 0;
1376                         if (td)
1377                                 add_job(td, jobname, 0, 0, client_type);
1378                         td = NULL;
1379                         sprintf(jobname, "%s", o[i] + 5);
1380                 }
1381                 if (in_global && !td_parent)
1382                         td_parent = get_new_job(1, &def_thread, 0, jobname);
1383                 else if (!in_global && !td) {
1384                         if (!td_parent)
1385                                 td_parent = &def_thread;
1386                         td = get_new_job(0, td_parent, 0, jobname);
1387                 }
1388                 if (in_global)
1389                         fio_options_parse(td_parent, (char **) &o[i], 1, 0);
1390                 else
1391                         fio_options_parse(td, (char **) &o[i], 1, 0);
1392                 i++;
1393         }
1394
1395         if (td)
1396                 add_job(td, jobname, 0, 0, client_type);
1397 }
1398
1399 static int skip_this_section(const char *name)
1400 {
1401         int i;
1402
1403         if (!nr_job_sections)
1404                 return 0;
1405         if (!strncmp(name, "global", 6))
1406                 return 0;
1407
1408         for (i = 0; i < nr_job_sections; i++)
1409                 if (!strcmp(job_sections[i], name))
1410                         return 0;
1411
1412         return 1;
1413 }
1414
1415 static int is_empty_or_comment(char *line)
1416 {
1417         unsigned int i;
1418
1419         for (i = 0; i < strlen(line); i++) {
1420                 if (line[i] == ';')
1421                         return 1;
1422                 if (line[i] == '#')
1423                         return 1;
1424                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1425                         return 0;
1426         }
1427
1428         return 1;
1429 }
1430
1431 /*
1432  * This is our [ini] type file parser.
1433  */
1434 int __parse_jobs_ini(struct thread_data *td,
1435                 char *file, int is_buf, int stonewall_flag, int type,
1436                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1437 {
1438         unsigned int global = 0;
1439         char *string;
1440         FILE *f;
1441         char *p;
1442         int ret = 0, stonewall;
1443         int first_sect = 1;
1444         int skip_fgets = 0;
1445         int inside_skip = 0;
1446         char **opts;
1447         int i, alloc_opts, num_opts;
1448
1449         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1450         assert(td || !nested);
1451
1452         if (is_buf)
1453                 f = NULL;
1454         else {
1455                 if (!strcmp(file, "-"))
1456                         f = stdin;
1457                 else
1458                         f = fopen(file, "r");
1459
1460                 if (!f) {
1461                         int __err = errno;
1462
1463                         log_err("fio: unable to open '%s' job file\n", file);
1464                         if (td)
1465                                 td_verror(td, __err, "job file open");
1466                         return 1;
1467                 }
1468         }
1469
1470         string = malloc(4096);
1471
1472         /*
1473          * it's really 256 + small bit, 280 should suffice
1474          */
1475         if (!nested) {
1476                 name = malloc(280);
1477                 memset(name, 0, 280);
1478         }
1479
1480         opts = NULL;
1481         if (nested && popts) {
1482                 opts = *popts;
1483                 alloc_opts = *aopts;
1484                 num_opts = *nopts;
1485         }
1486
1487         if (!opts) {
1488                 alloc_opts = 8;
1489                 opts = malloc(sizeof(char *) * alloc_opts);
1490                 num_opts = 0;
1491         }
1492
1493         stonewall = stonewall_flag;
1494         do {
1495                 /*
1496                  * if skip_fgets is set, we already have loaded a line we
1497                  * haven't handled.
1498                  */
1499                 if (!skip_fgets) {
1500                         if (is_buf)
1501                                 p = strsep(&file, "\n");
1502                         else
1503                                 p = fgets(string, 4096, f);
1504                         if (!p)
1505                                 break;
1506                 }
1507
1508                 skip_fgets = 0;
1509                 strip_blank_front(&p);
1510                 strip_blank_end(p);
1511
1512                 dprint(FD_PARSE, "%s\n", p);
1513                 if (is_empty_or_comment(p))
1514                         continue;
1515
1516                 if (!nested) {
1517                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1518                                 if (inside_skip)
1519                                         continue;
1520
1521                                 log_err("fio: option <%s> outside of "
1522                                         "[] job section\n", p);
1523                                 ret = 1;
1524                                 break;
1525                         }
1526
1527                         name[strlen(name) - 1] = '\0';
1528
1529                         if (skip_this_section(name)) {
1530                                 inside_skip = 1;
1531                                 continue;
1532                         } else
1533                                 inside_skip = 0;
1534
1535                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1536
1537                         global = !strncmp(name, "global", 6);
1538
1539                         if (dump_cmdline) {
1540                                 if (first_sect)
1541                                         log_info("fio ");
1542                                 if (!global)
1543                                         log_info("--name=%s ", name);
1544                                 first_sect = 0;
1545                         }
1546
1547                         td = get_new_job(global, &def_thread, 0, name);
1548                         if (!td) {
1549                                 ret = 1;
1550                                 break;
1551                         }
1552
1553                         /*
1554                          * Separate multiple job files by a stonewall
1555                          */
1556                         if (!global && stonewall) {
1557                                 td->o.stonewall = stonewall;
1558                                 stonewall = 0;
1559                         }
1560
1561                         num_opts = 0;
1562                         memset(opts, 0, alloc_opts * sizeof(char *));
1563                 }
1564                 else
1565                         skip_fgets = 1;
1566
1567                 while (1) {
1568                         if (!skip_fgets) {
1569                                 if (is_buf)
1570                                         p = strsep(&file, "\n");
1571                                 else
1572                                         p = fgets(string, 4096, f);
1573                                 if (!p)
1574                                         break;
1575                                 dprint(FD_PARSE, "%s", p);
1576                         }
1577                         else
1578                                 skip_fgets = 0;
1579
1580                         if (is_empty_or_comment(p))
1581                                 continue;
1582
1583                         strip_blank_front(&p);
1584
1585                         /*
1586                          * new section, break out and make sure we don't
1587                          * fgets() a new line at the top.
1588                          */
1589                         if (p[0] == '[') {
1590                                 if (nested) {
1591                                         log_err("No new sections in included files\n");
1592                                         return 1;
1593                                 }
1594
1595                                 skip_fgets = 1;
1596                                 break;
1597                         }
1598
1599                         strip_blank_end(p);
1600
1601                         if (!strncmp(p, "include", strlen("include"))) {
1602                                 char *filename = p + strlen("include") + 1;
1603
1604                                 if ((ret = __parse_jobs_ini(td, filename,
1605                                                 is_buf, stonewall_flag, type, 1,
1606                                                 name, &opts, &alloc_opts, &num_opts))) {
1607                                         log_err("Error %d while parsing include file %s\n",
1608                                                 ret, filename);
1609                                         break;
1610                                 }
1611                                 continue;
1612                         }
1613
1614                         if (num_opts == alloc_opts) {
1615                                 alloc_opts <<= 1;
1616                                 opts = realloc(opts,
1617                                                 alloc_opts * sizeof(char *));
1618                         }
1619
1620                         opts[num_opts] = strdup(p);
1621                         num_opts++;
1622                 }
1623
1624                 if (nested) {
1625                         *popts = opts;
1626                         *aopts = alloc_opts;
1627                         *nopts = num_opts;
1628                         goto out;
1629                 }
1630
1631                 ret = fio_options_parse(td, opts, num_opts, dump_cmdline);
1632                 if (!ret)
1633                         ret = add_job(td, name, 0, 0, type);
1634                 else {
1635                         log_err("fio: job %s dropped\n", name);
1636                         put_job(td);
1637                 }
1638
1639                 for (i = 0; i < num_opts; i++)
1640                         free(opts[i]);
1641                 num_opts = 0;
1642         } while (!ret);
1643
1644         if (dump_cmdline)
1645                 log_info("\n");
1646
1647         i = 0;
1648         while (i < nr_job_sections) {
1649                 free(job_sections[i]);
1650                 i++;
1651         }
1652
1653         free(opts);
1654 out:
1655         free(string);
1656         if (!nested)
1657                 free(name);
1658         if (!is_buf && f != stdin)
1659                 fclose(f);
1660         return ret;
1661 }
1662
1663 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1664 {
1665         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
1666                         0, NULL, NULL, NULL, NULL);
1667 }
1668
1669 static int fill_def_thread(void)
1670 {
1671         memset(&def_thread, 0, sizeof(def_thread));
1672
1673         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1674         def_thread.o.error_dump = 1;
1675
1676         /*
1677          * fill default options
1678          */
1679         fio_fill_default_options(&def_thread);
1680         return 0;
1681 }
1682
1683 static void usage(const char *name)
1684 {
1685         printf("%s\n", fio_version_string);
1686         printf("%s [options] [job options] <job file(s)>\n", name);
1687         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1688                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1689                 "\t\t\tdiskutil,job,mutex,profile,time,net,rate,compress\n");
1690         printf("  --parse-only\t\tParse options only, don't start any IO\n");
1691         printf("  --output\t\tWrite output to file\n");
1692         printf("  --runtime\t\tRuntime in seconds\n");
1693         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1694         printf("  --minimal\t\tMinimal (terse) output\n");
1695         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1696         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1697         printf("  --version\t\tPrint version info and exit\n");
1698         printf("  --help\t\tPrint this page\n");
1699         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1700         printf("  --crctest\t\tTest speed of checksum functions\n");
1701         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1702                 " them\n");
1703         printf("  --enghelp=engine\tPrint ioengine help, or list"
1704                 " available ioengines\n");
1705         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1706                 " cmd\n");
1707         printf("  --showcmd\t\tTurn a job file into command line options\n");
1708         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1709         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1710         printf("  --eta-newline=time\tForce a new line for every 'time'");
1711         printf(" period passed\n");
1712         printf("  --status-interval=t\tForce full status dump every");
1713         printf(" 't' period passed\n");
1714         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1715                 " writes\n");
1716         printf("  --section=name\tOnly run specified section in job file\n");
1717         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1718                 " (def 1024)\n");
1719         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1720         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1721         printf("  --server=args\t\tStart a backend fio server\n");
1722         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1723         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1724         printf("  --remote-config=file\tTell fio server to load this local job file\n");
1725         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
1726                 "\t\t\t(option=system,percpu) or run unit work\n"
1727                 "\t\t\tcalibration only (option=calibrate)\n");
1728 #ifdef CONFIG_ZLIB
1729         printf("  --inflate-log=log\tInflate and output compressed log\n");
1730 #endif
1731         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
1732         printf("  --trigger-timeout=t\tExecute trigger af this time\n");
1733         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
1734         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
1735         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1736         printf("\n                   Jens Axboe <jaxboe@fusionio.com>");
1737         printf("\n                   Jens Axboe <axboe@fb.com>\n");
1738 }
1739
1740 #ifdef FIO_INC_DEBUG
1741 struct debug_level debug_levels[] = {
1742         { .name = "process",
1743           .help = "Process creation/exit logging",
1744           .shift = FD_PROCESS,
1745         },
1746         { .name = "file",
1747           .help = "File related action logging",
1748           .shift = FD_FILE,
1749         },
1750         { .name = "io",
1751           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1752           .shift = FD_IO,
1753         },
1754         { .name = "mem",
1755           .help = "Memory allocation/freeing logging",
1756           .shift = FD_MEM,
1757         },
1758         { .name = "blktrace",
1759           .help = "blktrace action logging",
1760           .shift = FD_BLKTRACE,
1761         },
1762         { .name = "verify",
1763           .help = "IO verification action logging",
1764           .shift = FD_VERIFY,
1765         },
1766         { .name = "random",
1767           .help = "Random generation logging",
1768           .shift = FD_RANDOM,
1769         },
1770         { .name = "parse",
1771           .help = "Parser logging",
1772           .shift = FD_PARSE,
1773         },
1774         { .name = "diskutil",
1775           .help = "Disk utility logging actions",
1776           .shift = FD_DISKUTIL,
1777         },
1778         { .name = "job",
1779           .help = "Logging related to creating/destroying jobs",
1780           .shift = FD_JOB,
1781         },
1782         { .name = "mutex",
1783           .help = "Mutex logging",
1784           .shift = FD_MUTEX
1785         },
1786         { .name = "profile",
1787           .help = "Logging related to profiles",
1788           .shift = FD_PROFILE,
1789         },
1790         { .name = "time",
1791           .help = "Logging related to time keeping functions",
1792           .shift = FD_TIME,
1793         },
1794         { .name = "net",
1795           .help = "Network logging",
1796           .shift = FD_NET,
1797         },
1798         { .name = "rate",
1799           .help = "Rate logging",
1800           .shift = FD_RATE,
1801         },
1802         { .name = "compress",
1803           .help = "Log compression logging",
1804           .shift = FD_COMPRESS,
1805         },
1806         { .name = NULL, },
1807 };
1808
1809 static int set_debug(const char *string)
1810 {
1811         struct debug_level *dl;
1812         char *p = (char *) string;
1813         char *opt;
1814         int i;
1815
1816         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1817                 log_info("fio: dumping debug options:");
1818                 for (i = 0; debug_levels[i].name; i++) {
1819                         dl = &debug_levels[i];
1820                         log_info("%s,", dl->name);
1821                 }
1822                 log_info("all\n");
1823                 return 1;
1824         }
1825
1826         while ((opt = strsep(&p, ",")) != NULL) {
1827                 int found = 0;
1828
1829                 if (!strncmp(opt, "all", 3)) {
1830                         log_info("fio: set all debug options\n");
1831                         fio_debug = ~0UL;
1832                         continue;
1833                 }
1834
1835                 for (i = 0; debug_levels[i].name; i++) {
1836                         dl = &debug_levels[i];
1837                         found = !strncmp(opt, dl->name, strlen(dl->name));
1838                         if (!found)
1839                                 continue;
1840
1841                         if (dl->shift == FD_JOB) {
1842                                 opt = strchr(opt, ':');
1843                                 if (!opt) {
1844                                         log_err("fio: missing job number\n");
1845                                         break;
1846                                 }
1847                                 opt++;
1848                                 fio_debug_jobno = atoi(opt);
1849                                 log_info("fio: set debug jobno %d\n",
1850                                                         fio_debug_jobno);
1851                         } else {
1852                                 log_info("fio: set debug option %s\n", opt);
1853                                 fio_debug |= (1UL << dl->shift);
1854                         }
1855                         break;
1856                 }
1857
1858                 if (!found)
1859                         log_err("fio: debug mask %s not found\n", opt);
1860         }
1861         return 0;
1862 }
1863 #else
1864 static int set_debug(const char *string)
1865 {
1866         log_err("fio: debug tracing not included in build\n");
1867         return 1;
1868 }
1869 #endif
1870
1871 static void fio_options_fill_optstring(void)
1872 {
1873         char *ostr = cmd_optstr;
1874         int i, c;
1875
1876         c = i = 0;
1877         while (l_opts[i].name) {
1878                 ostr[c++] = l_opts[i].val;
1879                 if (l_opts[i].has_arg == required_argument)
1880                         ostr[c++] = ':';
1881                 else if (l_opts[i].has_arg == optional_argument) {
1882                         ostr[c++] = ':';
1883                         ostr[c++] = ':';
1884                 }
1885                 i++;
1886         }
1887         ostr[c] = '\0';
1888 }
1889
1890 static int client_flag_set(char c)
1891 {
1892         int i;
1893
1894         i = 0;
1895         while (l_opts[i].name) {
1896                 int val = l_opts[i].val;
1897
1898                 if (c == (val & 0xff))
1899                         return (val & FIO_CLIENT_FLAG);
1900
1901                 i++;
1902         }
1903
1904         return 0;
1905 }
1906
1907 static void parse_cmd_client(void *client, char *opt)
1908 {
1909         fio_client_add_cmd_option(client, opt);
1910 }
1911
1912 static void show_closest_option(const char *name)
1913 {
1914         int best_option, best_distance;
1915         int i, distance;
1916
1917         while (*name == '-')
1918                 name++;
1919
1920         best_option = -1;
1921         best_distance = INT_MAX;
1922         i = 0;
1923         while (l_opts[i].name) {
1924                 distance = string_distance(name, l_opts[i].name);
1925                 if (distance < best_distance) {
1926                         best_distance = distance;
1927                         best_option = i;
1928                 }
1929                 i++;
1930         }
1931
1932         if (best_option != -1)
1933                 log_err("Did you mean %s?\n", l_opts[best_option].name);
1934 }
1935
1936 int parse_cmd_line(int argc, char *argv[], int client_type)
1937 {
1938         struct thread_data *td = NULL;
1939         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1940         char *ostr = cmd_optstr;
1941         void *pid_file = NULL;
1942         void *cur_client = NULL;
1943         int backend = 0;
1944
1945         /*
1946          * Reset optind handling, since we may call this multiple times
1947          * for the backend.
1948          */
1949         optind = 1;
1950
1951         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1952                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1953                         parse_cmd_client(cur_client, argv[optind - 1]);
1954                         c &= ~FIO_CLIENT_FLAG;
1955                 }
1956
1957                 switch (c) {
1958                 case 'a':
1959                         smalloc_pool_size = atoi(optarg);
1960                         break;
1961                 case 't':
1962                         if (check_str_time(optarg, &def_timeout, 1)) {
1963                                 log_err("fio: failed parsing time %s\n", optarg);
1964                                 do_exit++;
1965                                 exit_val = 1;
1966                         }
1967                         break;
1968                 case 'l':
1969                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
1970                         do_exit++;
1971                         exit_val = 1;
1972                         break;
1973                 case 'b':
1974                         write_bw_log = 1;
1975                         break;
1976                 case 'o':
1977                         if (f_out && f_out != stdout)
1978                                 fclose(f_out);
1979
1980                         f_out = fopen(optarg, "w+");
1981                         if (!f_out) {
1982                                 perror("fopen output");
1983                                 exit(1);
1984                         }
1985                         f_err = f_out;
1986                         break;
1987                 case 'm':
1988                         output_format = FIO_OUTPUT_TERSE;
1989                         break;
1990                 case 'F':
1991                         if (!optarg) {
1992                                 log_err("fio: missing --output-format argument\n");
1993                                 exit_val = 1;
1994                                 do_exit++;
1995                                 break;
1996                         }
1997                         if (!strcmp(optarg, "minimal") ||
1998                             !strcmp(optarg, "terse") ||
1999                             !strcmp(optarg, "csv"))
2000                                 output_format = FIO_OUTPUT_TERSE;
2001                         else if (!strcmp(optarg, "json"))
2002                                 output_format = FIO_OUTPUT_JSON;
2003                         else
2004                                 output_format = FIO_OUTPUT_NORMAL;
2005                         break;
2006                 case 'f':
2007                         append_terse_output = 1;
2008                         break;
2009                 case 'h':
2010                         did_arg = 1;
2011                         if (!cur_client) {
2012                                 usage(argv[0]);
2013                                 do_exit++;
2014                         }
2015                         break;
2016                 case 'c':
2017                         did_arg = 1;
2018                         if (!cur_client) {
2019                                 fio_show_option_help(optarg);
2020                                 do_exit++;
2021                         }
2022                         break;
2023                 case 'i':
2024                         did_arg = 1;
2025                         if (!cur_client) {
2026                                 fio_show_ioengine_help(optarg);
2027                                 do_exit++;
2028                         }
2029                         break;
2030                 case 's':
2031                         did_arg = 1;
2032                         dump_cmdline = 1;
2033                         break;
2034                 case 'r':
2035                         read_only = 1;
2036                         break;
2037                 case 'v':
2038                         did_arg = 1;
2039                         if (!cur_client) {
2040                                 log_info("%s\n", fio_version_string);
2041                                 do_exit++;
2042                         }
2043                         break;
2044                 case 'V':
2045                         terse_version = atoi(optarg);
2046                         if (!(terse_version == 2 || terse_version == 3 ||
2047                              terse_version == 4)) {
2048                                 log_err("fio: bad terse version format\n");
2049                                 exit_val = 1;
2050                                 do_exit++;
2051                         }
2052                         break;
2053                 case 'e':
2054                         if (!strcmp("always", optarg))
2055                                 eta_print = FIO_ETA_ALWAYS;
2056                         else if (!strcmp("never", optarg))
2057                                 eta_print = FIO_ETA_NEVER;
2058                         break;
2059                 case 'E': {
2060                         long long t = 0;
2061
2062                         if (check_str_time(optarg, &t, 1)) {
2063                                 log_err("fio: failed parsing eta time %s\n", optarg);
2064                                 exit_val = 1;
2065                                 do_exit++;
2066                         }
2067                         eta_new_line = t / 1000;
2068                         break;
2069                         }
2070                 case 'd':
2071                         if (set_debug(optarg))
2072                                 do_exit++;
2073                         break;
2074                 case 'P':
2075                         did_arg = 1;
2076                         parse_only = 1;
2077                         break;
2078                 case 'x': {
2079                         size_t new_size;
2080
2081                         if (!strcmp(optarg, "global")) {
2082                                 log_err("fio: can't use global as only "
2083                                         "section\n");
2084                                 do_exit++;
2085                                 exit_val = 1;
2086                                 break;
2087                         }
2088                         new_size = (nr_job_sections + 1) * sizeof(char *);
2089                         job_sections = realloc(job_sections, new_size);
2090                         job_sections[nr_job_sections] = strdup(optarg);
2091                         nr_job_sections++;
2092                         break;
2093                         }
2094 #ifdef CONFIG_ZLIB
2095                 case 'X':
2096                         exit_val = iolog_file_inflate(optarg);
2097                         did_arg++;
2098                         do_exit++;
2099                         break;
2100 #endif
2101                 case 'p':
2102                         did_arg = 1;
2103                         if (exec_profile)
2104                                 free(exec_profile);
2105                         exec_profile = strdup(optarg);
2106                         break;
2107                 case FIO_GETOPT_JOB: {
2108                         const char *opt = l_opts[lidx].name;
2109                         char *val = optarg;
2110
2111                         if (!strncmp(opt, "name", 4) && td) {
2112                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2113                                 if (ret)
2114                                         goto out_free;
2115                                 td = NULL;
2116                                 did_arg = 1;
2117                         }
2118                         if (!td) {
2119                                 int is_section = !strncmp(opt, "name", 4);
2120                                 int global = 0;
2121
2122                                 if (!is_section || !strncmp(val, "global", 6))
2123                                         global = 1;
2124
2125                                 if (is_section && skip_this_section(val))
2126                                         continue;
2127
2128                                 td = get_new_job(global, &def_thread, 1, NULL);
2129                                 if (!td || ioengine_load(td)) {
2130                                         if (td) {
2131                                                 put_job(td);
2132                                                 td = NULL;
2133                                         }
2134                                         do_exit++;
2135                                         break;
2136                                 }
2137                                 fio_options_set_ioengine_opts(l_opts, td);
2138                         }
2139
2140                         if ((!val || !strlen(val)) &&
2141                             l_opts[lidx].has_arg == required_argument) {
2142                                 log_err("fio: option %s requires an argument\n", opt);
2143                                 ret = 1;
2144                         } else
2145                                 ret = fio_cmd_option_parse(td, opt, val);
2146
2147                         if (ret) {
2148                                 if (td) {
2149                                         put_job(td);
2150                                         td = NULL;
2151                                 }
2152                                 do_exit++;
2153                         }
2154
2155                         if (!ret && !strcmp(opt, "ioengine")) {
2156                                 free_ioengine(td);
2157                                 if (ioengine_load(td)) {
2158                                         put_job(td);
2159                                         td = NULL;
2160                                         do_exit++;
2161                                         break;
2162                                 }
2163                                 fio_options_set_ioengine_opts(l_opts, td);
2164                         }
2165                         break;
2166                 }
2167                 case FIO_GETOPT_IOENGINE: {
2168                         const char *opt = l_opts[lidx].name;
2169                         char *val = optarg;
2170
2171                         if (!td)
2172                                 break;
2173
2174                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2175                         break;
2176                 }
2177                 case 'w':
2178                         warnings_fatal = 1;
2179                         break;
2180                 case 'j':
2181                         max_jobs = atoi(optarg);
2182                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2183                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2184                                 do_exit++;
2185                                 exit_val = 1;
2186                         }
2187                         break;
2188                 case 'S':
2189                         did_arg = 1;
2190 #ifndef CONFIG_NO_SHM
2191                         if (nr_clients) {
2192                                 log_err("fio: can't be both client and server\n");
2193                                 do_exit++;
2194                                 exit_val = 1;
2195                                 break;
2196                         }
2197                         if (optarg)
2198                                 fio_server_set_arg(optarg);
2199                         is_backend = 1;
2200                         backend = 1;
2201 #else
2202                         log_err("fio: client/server requires SHM support\n");
2203                         do_exit++;
2204                         exit_val = 1;
2205 #endif
2206                         break;
2207                 case 'D':
2208                         if (pid_file)
2209                                 free(pid_file);
2210                         pid_file = strdup(optarg);
2211                         break;
2212                 case 'I':
2213                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2214                                 /* exit on error and calibration only */
2215                                 did_arg = 1;
2216                                 do_exit++;
2217                                 if (ret == -1)
2218                                         exit_val = 1;
2219                         }
2220                         break;
2221                 case 'C':
2222                         did_arg = 1;
2223                         if (is_backend) {
2224                                 log_err("fio: can't be both client and server\n");
2225                                 do_exit++;
2226                                 exit_val = 1;
2227                                 break;
2228                         }
2229                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2230                                 log_err("fio: failed adding client %s\n", optarg);
2231                                 do_exit++;
2232                                 exit_val = 1;
2233                                 break;
2234                         }
2235                         /*
2236                          * If the next argument exists and isn't an option,
2237                          * assume it's a job file for this client only.
2238                          */
2239                         while (optind < argc) {
2240                                 if (!strncmp(argv[optind], "--", 2) ||
2241                                     !strncmp(argv[optind], "-", 1))
2242                                         break;
2243
2244                                 if (fio_client_add_ini_file(cur_client, argv[optind], 0))
2245                                         break;
2246                                 optind++;
2247                         }
2248                         break;
2249                 case 'R':
2250                         did_arg = 1;
2251                         if (fio_client_add_ini_file(cur_client, optarg, 1)) {
2252                                 do_exit++;
2253                                 exit_val = 1;
2254                         }
2255                         break;
2256                 case 'T':
2257                         did_arg = 1;
2258                         do_exit++;
2259                         exit_val = fio_monotonic_clocktest(1);
2260                         break;
2261                 case 'G':
2262                         did_arg = 1;
2263                         do_exit++;
2264                         exit_val = fio_crctest(optarg);
2265                         break;
2266                 case 'L': {
2267                         long long val;
2268
2269                         if (check_str_time(optarg, &val, 1)) {
2270                                 log_err("fio: failed parsing time %s\n", optarg);
2271                                 do_exit++;
2272                                 exit_val = 1;
2273                                 break;
2274                         }
2275                         status_interval = val / 1000;
2276                         break;
2277                         }
2278                 case 'W':
2279                         if (trigger_file)
2280                                 free(trigger_file);
2281                         trigger_file = strdup(optarg);
2282                         break;
2283                 case 'H':
2284                         if (trigger_cmd)
2285                                 free(trigger_cmd);
2286                         trigger_cmd = strdup(optarg);
2287                         break;
2288                 case 'J':
2289                         if (trigger_remote_cmd)
2290                                 free(trigger_remote_cmd);
2291                         trigger_remote_cmd = strdup(optarg);
2292                         break;
2293                 case 'B':
2294                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2295                                 log_err("fio: failed parsing time %s\n", optarg);
2296                                 do_exit++;
2297                                 exit_val = 1;
2298                         }
2299                         trigger_timeout /= 1000000;
2300                         break;
2301                 case '?':
2302                         log_err("%s: unrecognized option '%s'\n", argv[0],
2303                                                         argv[optind - 1]);
2304                         show_closest_option(argv[optind - 1]);
2305                 default:
2306                         do_exit++;
2307                         exit_val = 1;
2308                         break;
2309                 }
2310                 if (do_exit)
2311                         break;
2312         }
2313
2314         if (do_exit && !(is_backend || nr_clients))
2315                 exit(exit_val);
2316
2317         if (nr_clients && fio_clients_connect())
2318                 exit(1);
2319
2320         if (is_backend && backend)
2321                 return fio_start_server(pid_file);
2322         else if (pid_file)
2323                 free(pid_file);
2324
2325         if (td) {
2326                 if (!ret) {
2327                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2328                         if (ret)
2329                                 did_arg = 1;
2330                 }
2331         }
2332
2333         while (!ret && optind < argc) {
2334                 ini_idx++;
2335                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2336                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2337                 optind++;
2338         }
2339
2340 out_free:
2341         if (pid_file)
2342                 free(pid_file);
2343
2344         return ini_idx;
2345 }
2346
2347 int fio_init_options(void)
2348 {
2349         f_out = stdout;
2350         f_err = stderr;
2351
2352         fio_options_fill_optstring();
2353         fio_options_dup_and_init(l_opts);
2354
2355         atexit(free_shm);
2356
2357         if (fill_def_thread())
2358                 return 1;
2359
2360         return 0;
2361 }
2362
2363 extern int fio_check_options(struct thread_options *);
2364
2365 int parse_options(int argc, char *argv[])
2366 {
2367         const int type = FIO_CLIENT_TYPE_CLI;
2368         int job_files, i;
2369
2370         if (fio_init_options())
2371                 return 1;
2372         if (fio_test_cconv(&def_thread.o))
2373                 log_err("fio: failed internal cconv test\n");
2374
2375         job_files = parse_cmd_line(argc, argv, type);
2376
2377         if (job_files > 0) {
2378                 for (i = 0; i < job_files; i++) {
2379                         if (i && fill_def_thread())
2380                                 return 1;
2381                         if (nr_clients) {
2382                                 if (fio_clients_send_ini(ini_file[i]))
2383                                         return 1;
2384                                 free(ini_file[i]);
2385                         } else if (!is_backend) {
2386                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2387                                         return 1;
2388                                 free(ini_file[i]);
2389                         }
2390                 }
2391         } else if (nr_clients) {
2392                 if (fill_def_thread())
2393                         return 1;
2394                 if (fio_clients_send_ini(NULL))
2395                         return 1;
2396         }
2397
2398         free(ini_file);
2399         fio_options_free(&def_thread);
2400         filesetup_mem_free();
2401
2402         if (!thread_number) {
2403                 if (parse_dryrun())
2404                         return 0;
2405                 if (exec_profile)
2406                         return 0;
2407                 if (is_backend || nr_clients)
2408                         return 0;
2409                 if (did_arg)
2410                         return 0;
2411
2412                 log_err("No jobs(s) defined\n\n");
2413
2414                 if (!did_arg) {
2415                         usage(argv[0]);
2416                         return 1;
2417                 }
2418
2419                 return 0;
2420         }
2421
2422         if (output_format == FIO_OUTPUT_NORMAL)
2423                 log_info("%s\n", fio_version_string);
2424
2425         return 0;
2426 }
2427
2428 void options_default_fill(struct thread_options *o)
2429 {
2430         memcpy(o, &def_thread.o, sizeof(*o));
2431 }