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