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