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/shm.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15
  16 #include "fio.h"
  17 #include "parse.h"
  18 #include "smalloc.h"
  19 #include "filehash.h"
  20 #include "verify.h"
  21 #include "profile.h"
  22 #include "server.h"
  23
  24 #include "lib/getopt.h"
  25
  26 #if FIO_PATCH > 0
  27 static char fio_version_string[] =      __fio_stringify(FIO_MAJOR) "."  \
  28                                         __fio_stringify(FIO_MINOR) "."  \
  29                                         __fio_stringify(FIO_PATCH);
  30 #else
  31 static char fio_version_string[] =      __fio_stringify(FIO_MAJOR) "."  \
  32                                         __fio_stringify(FIO_MINOR);
  33 #endif
  34
  35 #define FIO_RANDSEED            (0xb1899bedUL)
  36
  37 static char **ini_file;
  38 static int max_jobs = FIO_MAX_JOBS;
  39 static int dump_cmdline;
  40 static int def_timeout;
  41
  42 static struct thread_data def_thread;
  43 struct thread_data *threads = NULL;
  44
  45 int exitall_on_terminate = 0;
  46 int terse_output = 0;
  47 int eta_print;
  48 unsigned long long mlock_size = 0;
  49 FILE *f_out = NULL;
  50 FILE *f_err = NULL;
  51 char **job_sections = NULL;
  52 int nr_job_sections = 0;
  53 char *exec_profile = NULL;
  54 int warnings_fatal = 0;
  55 int terse_version = 2;
  56 int is_backend = 0;
  57 int nr_clients = 0;
  58 int log_syslog = 0;
  59
  60 int write_bw_log = 0;
  61 int read_only = 0;
  62
  63 static int write_lat_log;
  64
  65 static int prev_group_jobs;
  66
  67 unsigned long fio_debug = 0;
  68 unsigned int fio_debug_jobno = -1;
  69 unsigned int *fio_debug_jobp = NULL;
  70
  71 static char cmd_optstr[256];
  72 static int did_arg;
  73
  74 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  75         { .u.f  =  1.0 },
  76         { .u.f  =  5.0 },
  77         { .u.f  = 10.0 },
  78         { .u.f  = 20.0 },
  79         { .u.f  = 30.0 },
  80         { .u.f  = 40.0 },
  81         { .u.f  = 50.0 },
  82         { .u.f  = 60.0 },
  83         { .u.f  = 70.0 },
  84         { .u.f  = 80.0 },
  85         { .u.f  = 90.0 },
  86         { .u.f  = 95.0 },
  87         { .u.f  = 99.0 },
  88         { .u.f  = 99.5 },
  89         { .u.f  = 99.9 },
  90 };
  91
  92 #define FIO_CLIENT_FLAG         (1 << 16)
  93
  94 /*
  95  * Command line options. These will contain the above, plus a few
  96  * extra that only pertain to fio itself and not jobs.
  97  */
  98 static struct option l_opts[FIO_NR_OPTIONS] = {
  99         {
 100                 .name           = (char *) "output",
 101                 .has_arg        = required_argument,
 102                 .val            = 'o' | FIO_CLIENT_FLAG,
 103         },
 104         {
 105                 .name           = (char *) "timeout",
 106                 .has_arg        = required_argument,
 107                 .val            = 't' | FIO_CLIENT_FLAG,
 108         },
 109         {
 110                 .name           = (char *) "latency-log",
 111                 .has_arg        = required_argument,
 112                 .val            = 'l' | FIO_CLIENT_FLAG,
 113         },
 114         {
 115                 .name           = (char *) "bandwidth-log",
 116                 .has_arg        = required_argument,
 117                 .val            = 'b' | FIO_CLIENT_FLAG,
 118         },
 119         {
 120                 .name           = (char *) "minimal",
 121                 .has_arg        = optional_argument,
 122                 .val            = 'm' | FIO_CLIENT_FLAG,
 123         },
 124         {
 125                 .name           = (char *) "version",
 126                 .has_arg        = no_argument,
 127                 .val            = 'v' | FIO_CLIENT_FLAG,
 128         },
 129         {
 130                 .name           = (char *) "help",
 131                 .has_arg        = no_argument,
 132                 .val            = 'h' | FIO_CLIENT_FLAG,
 133         },
 134         {
 135                 .name           = (char *) "cmdhelp",
 136                 .has_arg        = optional_argument,
 137                 .val            = 'c' | FIO_CLIENT_FLAG,
 138         },
 139         {
 140                 .name           = (char *) "showcmd",
 141                 .has_arg        = no_argument,
 142                 .val            = 's' | FIO_CLIENT_FLAG,
 143         },
 144         {
 145                 .name           = (char *) "readonly",
 146                 .has_arg        = no_argument,
 147                 .val            = 'r' | FIO_CLIENT_FLAG,
 148         },
 149         {
 150                 .name           = (char *) "eta",
 151                 .has_arg        = required_argument,
 152                 .val            = 'e' | FIO_CLIENT_FLAG,
 153         },
 154         {
 155                 .name           = (char *) "debug",
 156                 .has_arg        = required_argument,
 157                 .val            = 'd' | FIO_CLIENT_FLAG,
 158         },
 159         {
 160                 .name           = (char *) "section",
 161                 .has_arg        = required_argument,
 162                 .val            = 'x' | FIO_CLIENT_FLAG,
 163         },
 164         {
 165                 .name           = (char *) "alloc-size",
 166                 .has_arg        = required_argument,
 167                 .val            = 'a' | FIO_CLIENT_FLAG,
 168         },
 169         {
 170                 .name           = (char *) "profile",
 171                 .has_arg        = required_argument,
 172                 .val            = 'p' | FIO_CLIENT_FLAG,
 173         },
 174         {
 175                 .name           = (char *) "warnings-fatal",
 176                 .has_arg        = no_argument,
 177                 .val            = 'w' | FIO_CLIENT_FLAG,
 178         },
 179         {
 180                 .name           = (char *) "max-jobs",
 181                 .has_arg        = required_argument,
 182                 .val            = 'j' | FIO_CLIENT_FLAG,
 183         },
 184         {
 185                 .name           = (char *) "terse-version",
 186                 .has_arg        = required_argument,
 187                 .val            = 'V' | FIO_CLIENT_FLAG,
 188         },
 189         {
 190                 .name           = (char *) "server",
 191                 .has_arg        = optional_argument,
 192                 .val            = 'S',
 193         },
 194         {       .name           = (char *) "daemonize",
 195                 .has_arg        = no_argument,
 196                 .val            = 'D',
 197         },
 198         {
 199                 .name           = (char *) "client",
 200                 .has_arg        = required_argument,
 201                 .val            = 'C',
 202         },
 203         {
 204                 .name           = NULL,
 205         },
 206 };
 207
 208 static void free_shm(void)
 209 {
 210         struct shmid_ds sbuf;
 211
 212         if (threads) {
 213                 void *tp = threads;
 214
 215                 threads = NULL;
 216                 file_hash_exit();
 217                 fio_debug_jobp = NULL;
 218                 shmdt(tp);
 219                 shmctl(shm_id, IPC_RMID, &sbuf);
 220         }
 221
 222         scleanup();
 223 }
 224
 225 /*
 226  * The thread area is shared between the main process and the job
 227  * threads/processes. So setup a shared memory segment that will hold
 228  * all the job info. We use the end of the region for keeping track of
 229  * open files across jobs, for file sharing.
 230  */
 231 static int setup_thread_area(void)
 232 {
 233         void *hash;
 234
 235         if (threads)
 236                 return 0;
 237
 238         /*
 239          * 1024 is too much on some machines, scale max_jobs if
 240          * we get a failure that looks like too large a shm segment
 241          */
 242         do {
 243                 size_t size = max_jobs * sizeof(struct thread_data);
 244
 245                 size += file_hash_size;
 246                 size += sizeof(unsigned int);
 247
 248                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 249                 if (shm_id != -1)
 250                         break;
 251                 if (errno != EINVAL) {
 252                         perror("shmget");
 253                         break;
 254                 }
 255
 256                 max_jobs >>= 1;
 257         } while (max_jobs);
 258
 259         if (shm_id == -1)
 260                 return 1;
 261
 262         threads = shmat(shm_id, NULL, 0);
 263         if (threads == (void *) -1) {
 264                 perror("shmat");
 265                 return 1;
 266         }
 267
 268         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 269         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 270         fio_debug_jobp = (void *) hash + file_hash_size;
 271         *fio_debug_jobp = -1;
 272         file_hash_init(hash);
 273         return 0;
 274 }
 275
 276 /*
 277  * Return a free job structure.
 278  */
 279 static struct thread_data *get_new_job(int global, struct thread_data *parent)
 280 {
 281         struct thread_data *td;
 282
 283         if (global)
 284                 return &def_thread;
 285         if (setup_thread_area()) {
 286                 log_err("error: failed to setup shm segment\n");
 287                 return NULL;
 288         }
 289         if (thread_number >= max_jobs) {
 290                 log_err("error: maximum number of jobs (%d) reached.\n",
 291                                 max_jobs);
 292                 return NULL;
 293         }
 294
 295         td = &threads[thread_number++];
 296         *td = *parent;
 297
 298         td->o.uid = td->o.gid = -1U;
 299
 300         dup_files(td, parent);
 301         options_mem_dupe(td);
 302
 303         profile_add_hooks(td);
 304
 305         td->thread_number = thread_number;
 306         return td;
 307 }
 308
 309 static void put_job(struct thread_data *td)
 310 {
 311         if (td == &def_thread)
 312                 return;
 313
 314         profile_td_exit(td);
 315
 316         if (td->error)
 317                 log_info("fio: %s\n", td->verror);
 318
 319         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 320         thread_number--;
 321 }
 322
 323 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 324 {
 325         unsigned int bs = td->o.min_bs[ddir];
 326         unsigned long long bytes_per_sec;
 327
 328         assert(ddir_rw(ddir));
 329
 330         if (td->o.rate[ddir])
 331                 bytes_per_sec = td->o.rate[ddir];
 332         else
 333                 bytes_per_sec = td->o.rate_iops[ddir] * bs;
 334
 335         if (!bytes_per_sec) {
 336                 log_err("rate lower than supported\n");
 337                 return -1;
 338         }
 339
 340         td->rate_nsec_cycle[ddir] = 1000000000ULL / bytes_per_sec;
 341         td->rate_pending_usleep[ddir] = 0;
 342         return 0;
 343 }
 344
 345 static int setup_rate(struct thread_data *td)
 346 {
 347         int ret = 0;
 348
 349         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 350                 ret = __setup_rate(td, DDIR_READ);
 351         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 352                 ret |= __setup_rate(td, DDIR_WRITE);
 353
 354         return ret;
 355 }
 356
 357 static int fixed_block_size(struct thread_options *o)
 358 {
 359         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 360                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 361                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 362 }
 363
 364 /*
 365  * Lazy way of fixing up options that depend on each other. We could also
 366  * define option callback handlers, but this is easier.
 367  */
 368 static int fixup_options(struct thread_data *td)
 369 {
 370         struct thread_options *o = &td->o;
 371         int ret = 0;
 372
 373 #ifndef FIO_HAVE_PSHARED_MUTEX
 374         if (!o->use_thread) {
 375                 log_info("fio: this platform does not support process shared"
 376                          " mutexes, forcing use of threads. Use the 'thread'"
 377                          " option to get rid of this warning.\n");
 378                 o->use_thread = 1;
 379                 ret = warnings_fatal;
 380         }
 381 #endif
 382
 383         if (o->write_iolog_file && o->read_iolog_file) {
 384                 log_err("fio: read iolog overrides write_iolog\n");
 385                 free(o->write_iolog_file);
 386                 o->write_iolog_file = NULL;
 387                 ret = warnings_fatal;
 388         }
 389
 390         /*
 391          * only really works for sequential io for now, and with 1 file
 392          */
 393         if (o->zone_size && td_random(td) && o->open_files == 1)
 394                 o->zone_size = 0;
 395
 396         /*
 397          * Reads can do overwrites, we always need to pre-create the file
 398          */
 399         if (td_read(td) || td_rw(td))
 400                 o->overwrite = 1;
 401
 402         if (!o->min_bs[DDIR_READ])
 403                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 404         if (!o->max_bs[DDIR_READ])
 405                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 406         if (!o->min_bs[DDIR_WRITE])
 407                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 408         if (!o->max_bs[DDIR_WRITE])
 409                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 410
 411         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 412
 413         /*
 414          * For random IO, allow blockalign offset other than min_bs.
 415          */
 416         if (!o->ba[DDIR_READ] || !td_random(td))
 417                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 418         if (!o->ba[DDIR_WRITE] || !td_random(td))
 419                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 420
 421         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 422             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 423             !o->norandommap) {
 424                 log_err("fio: Any use of blockalign= turns off randommap\n");
 425                 o->norandommap = 1;
 426                 ret = warnings_fatal;
 427         }
 428
 429         if (!o->file_size_high)
 430                 o->file_size_high = o->file_size_low;
 431
 432         if (o->norandommap && o->verify != VERIFY_NONE
 433             && !fixed_block_size(o))  {
 434                 log_err("fio: norandommap given for variable block sizes, "
 435                         "verify disabled\n");
 436                 o->verify = VERIFY_NONE;
 437                 ret = warnings_fatal;
 438         }
 439         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 440                 log_err("fio: bs_unaligned may not work with raw io\n");
 441
 442         /*
 443          * thinktime_spin must be less than thinktime
 444          */
 445         if (o->thinktime_spin > o->thinktime)
 446                 o->thinktime_spin = o->thinktime;
 447
 448         /*
 449          * The low water mark cannot be bigger than the iodepth
 450          */
 451         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 452                 /*
 453                  * syslet work around - if the workload is sequential,
 454                  * we want to let the queue drain all the way down to
 455                  * avoid seeking between async threads
 456                  */
 457                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 458                         o->iodepth_low = 1;
 459                 else
 460                         o->iodepth_low = o->iodepth;
 461         }
 462
 463         /*
 464          * If batch number isn't set, default to the same as iodepth
 465          */
 466         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 467                 o->iodepth_batch = o->iodepth;
 468
 469         if (o->nr_files > td->files_index)
 470                 o->nr_files = td->files_index;
 471
 472         if (o->open_files > o->nr_files || !o->open_files)
 473                 o->open_files = o->nr_files;
 474
 475         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 476             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 477                 o->rate_iops_min[1]))) {
 478                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 479                 ret = 1;
 480         }
 481         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 482             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 483             (o->rate_iops[1] < o->rate_iops_min[1])) {
 484                 log_err("fio: minimum rate exceeds rate\n");
 485                 ret = 1;
 486         }
 487
 488         if (!o->timeout && o->time_based) {
 489                 log_err("fio: time_based requires a runtime/timeout setting\n");
 490                 o->time_based = 0;
 491                 ret = warnings_fatal;
 492         }
 493
 494         if (o->fill_device && !o->size)
 495                 o->size = -1ULL;
 496
 497         if (o->verify != VERIFY_NONE) {
 498                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 499                         log_info("Multiple writers may overwrite blocks that "
 500                                 "belong to other jobs. This can cause "
 501                                 "verification failures.\n");
 502                         ret = warnings_fatal;
 503                 }
 504
 505                 o->refill_buffers = 1;
 506                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 507                     !o->verify_interval)
 508                         o->verify_interval = o->min_bs[DDIR_WRITE];
 509         }
 510
 511         if (o->pre_read) {
 512                 o->invalidate_cache = 0;
 513                 if (td->io_ops->flags & FIO_PIPEIO) {
 514                         log_info("fio: cannot pre-read files with an IO engine"
 515                                  " that isn't seekable. Pre-read disabled.\n");
 516                         ret = warnings_fatal;
 517                 }
 518         }
 519
 520 #ifndef FIO_HAVE_FDATASYNC
 521         if (o->fdatasync_blocks) {
 522                 log_info("fio: this platform does not support fdatasync()"
 523                          " falling back to using fsync().  Use the 'fsync'"
 524                          " option instead of 'fdatasync' to get rid of"
 525                          " this warning\n");
 526                 o->fsync_blocks = o->fdatasync_blocks;
 527                 o->fdatasync_blocks = 0;
 528                 ret = warnings_fatal;
 529         }
 530 #endif
 531
 532         return ret;
 533 }
 534
 535 /*
 536  * This function leaks the buffer
 537  */
 538 static char *to_kmg(unsigned int val)
 539 {
 540         char *buf = malloc(32);
 541         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 542         char *p = post;
 543
 544         do {
 545                 if (val & 1023)
 546                         break;
 547
 548                 val >>= 10;
 549                 p++;
 550         } while (*p);
 551
 552         snprintf(buf, 31, "%u%c", val, *p);
 553         return buf;
 554 }
 555
 556 /* External engines are specified by "external:name.o") */
 557 static const char *get_engine_name(const char *str)
 558 {
 559         char *p = strstr(str, ":");
 560
 561         if (!p)
 562                 return str;
 563
 564         p++;
 565         strip_blank_front(&p);
 566         strip_blank_end(p);
 567         return p;
 568 }
 569
 570 static int exists_and_not_file(const char *filename)
 571 {
 572         struct stat sb;
 573
 574         if (lstat(filename, &sb) == -1)
 575                 return 0;
 576
 577         /* \\.\ is the device namespace in Windows, where every file
 578          * is a device node */
 579         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 580                 return 0;
 581
 582         return 1;
 583 }
 584
 585 static void td_fill_rand_seeds_os(struct thread_data *td)
 586 {
 587         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 588         os_random_seed(td->rand_seeds[1], &td->verify_state);
 589         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 590
 591         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 592                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 593
 594         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 595         os_random_seed(td->rand_seeds[6], &td->trim_state);
 596
 597         if (!td_random(td))
 598                 return;
 599
 600         if (td->o.rand_repeatable)
 601                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 602
 603         os_random_seed(td->rand_seeds[4], &td->random_state);
 604 }
 605
 606 static void td_fill_rand_seeds_internal(struct thread_data *td)
 607 {
 608         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 609         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 610         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 611
 612         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 613                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 614
 615         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 616         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 617
 618         if (!td_random(td))
 619                 return;
 620
 621         if (td->o.rand_repeatable)
 622                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 623
 624         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 625 }
 626
 627 void td_fill_rand_seeds(struct thread_data *td)
 628 {
 629         if (td->o.use_os_rand)
 630                 td_fill_rand_seeds_os(td);
 631         else
 632                 td_fill_rand_seeds_internal(td);
 633
 634         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 635 }
 636
 637 /*
 638  * Initialize the various random states we need (random io, block size ranges,
 639  * read/write mix, etc).
 640  */
 641 static int init_random_state(struct thread_data *td)
 642 {
 643         int fd;
 644
 645         fd = open("/dev/urandom", O_RDONLY);
 646         if (fd == -1) {
 647                 td_verror(td, errno, "open");
 648                 return 1;
 649         }
 650
 651         if (read(fd, td->rand_seeds, sizeof(td->rand_seeds)) <
 652             (int) sizeof(td->rand_seeds)) {
 653                 td_verror(td, EIO, "read");
 654                 close(fd);
 655                 return 1;
 656         }
 657
 658         close(fd);
 659         td_fill_rand_seeds(td);
 660         return 0;
 661 }
 662
 663 /*
 664  * Adds a job to the list of things todo. Sanitizes the various options
 665  * to make sure we don't have conflicts, and initializes various
 666  * members of td.
 667  */
 668 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 669 {
 670         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 671                                    "randread", "randwrite", "randrw" };
 672         unsigned int i;
 673         const char *engine;
 674         char fname[PATH_MAX];
 675         int numjobs, file_alloced;
 676
 677         /*
 678          * the def_thread is just for options, it's not a real job
 679          */
 680         if (td == &def_thread)
 681                 return 0;
 682
 683         /*
 684          * if we are just dumping the output command line, don't add the job
 685          */
 686         if (dump_cmdline) {
 687                 put_job(td);
 688                 return 0;
 689         }
 690
 691         if (profile_td_init(td))
 692                 goto err;
 693
 694         engine = get_engine_name(td->o.ioengine);
 695         td->io_ops = load_ioengine(td, engine);
 696         if (!td->io_ops) {
 697                 log_err("fio: failed to load engine %s\n", engine);
 698                 goto err;
 699         }
 700
 701         if (td->o.use_thread)
 702                 nr_thread++;
 703         else
 704                 nr_process++;
 705
 706         if (td->o.odirect)
 707                 td->io_ops->flags |= FIO_RAWIO;
 708
 709         file_alloced = 0;
 710         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 711                 file_alloced = 1;
 712
 713                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 714                         add_file(td, jobname);
 715                 else {
 716                         for (i = 0; i < td->o.nr_files; i++) {
 717                                 sprintf(fname, "%s.%d.%d", jobname,
 718                                                         td->thread_number, i);
 719                                 add_file(td, fname);
 720                         }
 721                 }
 722         }
 723
 724         if (fixup_options(td))
 725                 goto err;
 726
 727         if (td->io_ops->flags & FIO_DISKLESSIO) {
 728                 struct fio_file *f;
 729
 730                 for_each_file(td, f, i)
 731                         f->real_file_size = -1ULL;
 732         }
 733
 734         td->mutex = fio_mutex_init(0);
 735
 736         td->ts.clat_percentiles = td->o.clat_percentiles;
 737         if (td->o.overwrite_plist)
 738                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 739         else
 740                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 741
 742         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 743         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 744         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
 745         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 746         td->ddir_seq_nr = td->o.ddir_seq_nr;
 747
 748         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 749                 prev_group_jobs = 0;
 750                 groupid++;
 751         }
 752
 753         td->groupid = groupid;
 754         prev_group_jobs++;
 755
 756         if (init_random_state(td))
 757                 goto err;
 758
 759         if (setup_rate(td))
 760                 goto err;
 761
 762         if (td->o.write_lat_log) {
 763                 setup_log(&td->lat_log);
 764                 setup_log(&td->slat_log);
 765                 setup_log(&td->clat_log);
 766         }
 767         if (td->o.write_bw_log)
 768                 setup_log(&td->bw_log);
 769         if (td->o.write_iops_log)
 770                 setup_log(&td->iops_log);
 771
 772         if (!td->o.name)
 773                 td->o.name = strdup(jobname);
 774
 775         if (!terse_output) {
 776                 if (!job_add_num) {
 777                         if (!strcmp(td->io_ops->name, "cpuio")) {
 778                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 779                                          " cpucycle=%u\n", td->o.name,
 780                                                         td->o.cpuload,
 781                                                         td->o.cpucycle);
 782                         } else {
 783                                 char *c1, *c2, *c3, *c4;
 784
 785                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 786                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 787                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 788                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 789
 790                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 791                                          " ioengine=%s, iodepth=%u\n",
 792                                                 td->o.name, td->groupid,
 793                                                 ddir_str[td->o.td_ddir],
 794                                                 c1, c2, c3, c4,
 795                                                 td->io_ops->name,
 796                                                 td->o.iodepth);
 797
 798                                 free(c1);
 799                                 free(c2);
 800                                 free(c3);
 801                                 free(c4);
 802                         }
 803                 } else if (job_add_num == 1)
 804                         log_info("...\n");
 805         }
 806
 807         /*
 808          * recurse add identical jobs, clear numjobs and stonewall options
 809          * as they don't apply to sub-jobs
 810          */
 811         numjobs = td->o.numjobs;
 812         while (--numjobs) {
 813                 struct thread_data *td_new = get_new_job(0, td);
 814
 815                 if (!td_new)
 816                         goto err;
 817
 818                 td_new->o.numjobs = 1;
 819                 td_new->o.stonewall = 0;
 820                 td_new->o.new_group = 0;
 821
 822                 if (file_alloced) {
 823                         td_new->o.filename = NULL;
 824                         td_new->files_index = 0;
 825                         td_new->files_size = 0;
 826                         td_new->files = NULL;
 827                 }
 828
 829                 job_add_num = numjobs - 1;
 830
 831                 if (add_job(td_new, jobname, job_add_num))
 832                         goto err;
 833         }
 834
 835         return 0;
 836 err:
 837         put_job(td);
 838         return -1;
 839 }
 840
 841 /*
 842  * Parse as if 'o' was a command line
 843  */
 844 void add_job_opts(const char **o)
 845 {
 846         struct thread_data *td, *td_parent;
 847         int i, in_global = 1;
 848         char jobname[32];
 849
 850         i = 0;
 851         td_parent = td = NULL;
 852         while (o[i]) {
 853                 if (!strncmp(o[i], "name", 4)) {
 854                         in_global = 0;
 855                         if (td)
 856                                 add_job(td, jobname, 0);
 857                         td = NULL;
 858                         sprintf(jobname, "%s", o[i] + 5);
 859                 }
 860                 if (in_global && !td_parent)
 861                         td_parent = get_new_job(1, &def_thread);
 862                 else if (!in_global && !td) {
 863                         if (!td_parent)
 864                                 td_parent = &def_thread;
 865                         td = get_new_job(0, td_parent);
 866                 }
 867                 if (in_global)
 868                         fio_options_parse(td_parent, (char **) &o[i], 1);
 869                 else
 870                         fio_options_parse(td, (char **) &o[i], 1);
 871                 i++;
 872         }
 873
 874         if (td)
 875                 add_job(td, jobname, 0);
 876 }
 877
 878 static int skip_this_section(const char *name)
 879 {
 880         int i;
 881
 882         if (!nr_job_sections)
 883                 return 0;
 884         if (!strncmp(name, "global", 6))
 885                 return 0;
 886
 887         for (i = 0; i < nr_job_sections; i++)
 888                 if (!strcmp(job_sections[i], name))
 889                         return 0;
 890
 891         return 1;
 892 }
 893
 894 static int is_empty_or_comment(char *line)
 895 {
 896         unsigned int i;
 897
 898         for (i = 0; i < strlen(line); i++) {
 899                 if (line[i] == ';')
 900                         return 1;
 901                 if (line[i] == '#')
 902                         return 1;
 903                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 904                         return 0;
 905         }
 906
 907         return 1;
 908 }
 909
 910 /*
 911  * This is our [ini] type file parser.
 912  */
 913 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
 914 {
 915         unsigned int global;
 916         struct thread_data *td;
 917         char *string, *name;
 918         FILE *f;
 919         char *p;
 920         int ret = 0, stonewall;
 921         int first_sect = 1;
 922         int skip_fgets = 0;
 923         int inside_skip = 0;
 924         char **opts;
 925         int i, alloc_opts, num_opts;
 926
 927         if (is_buf)
 928                 f = NULL;
 929         else {
 930                 if (!strcmp(file, "-"))
 931                         f = stdin;
 932                 else
 933                         f = fopen(file, "r");
 934
 935                 if (!f) {
 936                         perror("fopen job file");
 937                         return 1;
 938                 }
 939         }
 940
 941         string = malloc(4096);
 942
 943         /*
 944          * it's really 256 + small bit, 280 should suffice
 945          */
 946         name = malloc(280);
 947         memset(name, 0, 280);
 948
 949         alloc_opts = 8;
 950         opts = malloc(sizeof(char *) * alloc_opts);
 951         num_opts = 0;
 952
 953         stonewall = stonewall_flag;
 954         do {
 955                 /*
 956                  * if skip_fgets is set, we already have loaded a line we
 957                  * haven't handled.
 958                  */
 959                 if (!skip_fgets) {
 960                         if (is_buf)
 961                                 p = strsep(&file, "\n");
 962                         else
 963                                 p = fgets(string, 4095, f);
 964                         if (!p)
 965                                 break;
 966                 }
 967
 968                 skip_fgets = 0;
 969                 strip_blank_front(&p);
 970                 strip_blank_end(p);
 971
 972                 if (is_empty_or_comment(p))
 973                         continue;
 974                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
 975                         if (inside_skip)
 976                                 continue;
 977                         log_err("fio: option <%s> outside of [] job section\n",
 978                                                                         p);
 979                         break;
 980                 }
 981
 982                 name[strlen(name) - 1] = '\0';
 983
 984                 if (skip_this_section(name)) {
 985                         inside_skip = 1;
 986                         continue;
 987                 } else
 988                         inside_skip = 0;
 989
 990                 global = !strncmp(name, "global", 6);
 991
 992                 if (dump_cmdline) {
 993                         if (first_sect)
 994                                 log_info("fio ");
 995                         if (!global)
 996                                 log_info("--name=%s ", name);
 997                         first_sect = 0;
 998                 }
 999
1000                 td = get_new_job(global, &def_thread);
1001                 if (!td) {
1002                         ret = 1;
1003                         break;
1004                 }
1005
1006                 /*
1007                  * Seperate multiple job files by a stonewall
1008                  */
1009                 if (!global && stonewall) {
1010                         td->o.stonewall = stonewall;
1011                         stonewall = 0;
1012                 }
1013
1014                 num_opts = 0;
1015                 memset(opts, 0, alloc_opts * sizeof(char *));
1016
1017                 while (1) {
1018                         if (is_buf)
1019                                 p = strsep(&file, "\n");
1020                         else
1021                                 p = fgets(string, 4096, f);
1022                         if (!p)
1023                                 break;
1024
1025                         if (is_empty_or_comment(p))
1026                                 continue;
1027
1028                         strip_blank_front(&p);
1029
1030                         /*
1031                          * new section, break out and make sure we don't
1032                          * fgets() a new line at the top.
1033                          */
1034                         if (p[0] == '[') {
1035                                 skip_fgets = 1;
1036                                 break;
1037                         }
1038
1039                         strip_blank_end(p);
1040
1041                         if (num_opts == alloc_opts) {
1042                                 alloc_opts <<= 1;
1043                                 opts = realloc(opts,
1044                                                 alloc_opts * sizeof(char *));
1045                         }
1046
1047                         opts[num_opts] = strdup(p);
1048                         num_opts++;
1049                 }
1050
1051                 ret = fio_options_parse(td, opts, num_opts);
1052                 if (!ret) {
1053                         if (dump_cmdline)
1054                                 for (i = 0; i < num_opts; i++)
1055                                         log_info("--%s ", opts[i]);
1056
1057                         ret = add_job(td, name, 0);
1058                 } else {
1059                         log_err("fio: job %s dropped\n", name);
1060                         put_job(td);
1061                 }
1062
1063                 for (i = 0; i < num_opts; i++)
1064                         free(opts[i]);
1065                 num_opts = 0;
1066         } while (!ret);
1067
1068         if (dump_cmdline)
1069                 log_info("\n");
1070
1071         for (i = 0; i < num_opts; i++)
1072                 free(opts[i]);
1073
1074         free(string);
1075         free(name);
1076         free(opts);
1077         if (!is_buf && f != stdin)
1078                 fclose(f);
1079         return ret;
1080 }
1081
1082 static int fill_def_thread(void)
1083 {
1084         memset(&def_thread, 0, sizeof(def_thread));
1085
1086         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1087         def_thread.o.timeout = def_timeout;
1088
1089         /*
1090          * fill default options
1091          */
1092         fio_fill_default_options(&def_thread);
1093         return 0;
1094 }
1095
1096 static void usage(const char *name)
1097 {
1098         printf("fio %s\n", fio_version_string);
1099         printf("%s [options] [job options] <job file(s)>\n", name);
1100         printf("\t--debug=options\tEnable debug logging\n");
1101         printf("\t--output\tWrite output to file\n");
1102         printf("\t--timeout\tRuntime in seconds\n");
1103         printf("\t--latency-log\tGenerate per-job latency logs\n");
1104         printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
1105         printf("\t--minimal\tMinimal (terse) output\n");
1106         printf("\t--version\tPrint version info and exit\n");
1107         printf("\t--terse-version=x Terse version output format\n");
1108         printf("\t--help\t\tPrint this page\n");
1109         printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of"
1110                 " them\n");
1111         printf("\t--showcmd\tTurn a job file into command line options\n");
1112         printf("\t--eta=when\tWhen ETA estimate should be printed\n");
1113         printf("\t          \tMay be \"always\", \"never\" or \"auto\"\n");
1114         printf("\t--readonly\tTurn on safety read-only checks, preventing"
1115                 " writes\n");
1116         printf("\t--section=name\tOnly run specified section in job file\n");
1117         printf("\t--alloc-size=kb\tSet smalloc pool to this size in kb"
1118                 " (def 1024)\n");
1119         printf("\t--warnings-fatal Fio parser warnings are fatal\n");
1120         printf("\t--max-jobs\tMaximum number of threads/processes to support\n");
1121         printf("\t--server=args\tStart a backend fio server\n");
1122         printf("\t--client=hostname Talk to remove backend fio server at hostname\n");
1123         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1124         printf("\n                   Jens Axboe <jaxboe@fusionio.com>\n");
1125 }
1126
1127 #ifdef FIO_INC_DEBUG
1128 struct debug_level debug_levels[] = {
1129         { .name = "process",    .shift = FD_PROCESS, },
1130         { .name = "file",       .shift = FD_FILE, },
1131         { .name = "io",         .shift = FD_IO, },
1132         { .name = "mem",        .shift = FD_MEM, },
1133         { .name = "blktrace",   .shift = FD_BLKTRACE },
1134         { .name = "verify",     .shift = FD_VERIFY },
1135         { .name = "random",     .shift = FD_RANDOM },
1136         { .name = "parse",      .shift = FD_PARSE },
1137         { .name = "diskutil",   .shift = FD_DISKUTIL },
1138         { .name = "job",        .shift = FD_JOB },
1139         { .name = "mutex",      .shift = FD_MUTEX },
1140         { .name = "profile",    .shift = FD_PROFILE },
1141         { .name = "time",       .shift = FD_TIME },
1142         { .name = "net",        .shift = FD_NET },
1143         { .name = NULL, },
1144 };
1145
1146 static int set_debug(const char *string)
1147 {
1148         struct debug_level *dl;
1149         char *p = (char *) string;
1150         char *opt;
1151         int i;
1152
1153         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1154                 log_info("fio: dumping debug options:");
1155                 for (i = 0; debug_levels[i].name; i++) {
1156                         dl = &debug_levels[i];
1157                         log_info("%s,", dl->name);
1158                 }
1159                 log_info("all\n");
1160                 return 1;
1161         }
1162
1163         while ((opt = strsep(&p, ",")) != NULL) {
1164                 int found = 0;
1165
1166                 if (!strncmp(opt, "all", 3)) {
1167                         log_info("fio: set all debug options\n");
1168                         fio_debug = ~0UL;
1169                         continue;
1170                 }
1171
1172                 for (i = 0; debug_levels[i].name; i++) {
1173                         dl = &debug_levels[i];
1174                         found = !strncmp(opt, dl->name, strlen(dl->name));
1175                         if (!found)
1176                                 continue;
1177
1178                         if (dl->shift == FD_JOB) {
1179                                 opt = strchr(opt, ':');
1180                                 if (!opt) {
1181                                         log_err("fio: missing job number\n");
1182                                         break;
1183                                 }
1184                                 opt++;
1185                                 fio_debug_jobno = atoi(opt);
1186                                 log_info("fio: set debug jobno %d\n",
1187                                                         fio_debug_jobno);
1188                         } else {
1189                                 log_info("fio: set debug option %s\n", opt);
1190                                 fio_debug |= (1UL << dl->shift);
1191                         }
1192                         break;
1193                 }
1194
1195                 if (!found)
1196                         log_err("fio: debug mask %s not found\n", opt);
1197         }
1198         return 0;
1199 }
1200 #else
1201 static int set_debug(const char *string)
1202 {
1203         log_err("fio: debug tracing not included in build\n");
1204         return 1;
1205 }
1206 #endif
1207
1208 static void fio_options_fill_optstring(void)
1209 {
1210         char *ostr = cmd_optstr;
1211         int i, c;
1212
1213         c = i = 0;
1214         while (l_opts[i].name) {
1215                 ostr[c++] = l_opts[i].val;
1216                 if (l_opts[i].has_arg == required_argument)
1217                         ostr[c++] = ':';
1218                 else if (l_opts[i].has_arg == optional_argument) {
1219                         ostr[c++] = ':';
1220                         ostr[c++] = ':';
1221                 }
1222                 i++;
1223         }
1224         ostr[c] = '\0';
1225 }
1226
1227 static int client_flag_set(char c)
1228 {
1229         int i;
1230
1231         i = 0;
1232         while (l_opts[i].name) {
1233                 int val = l_opts[i].val;
1234
1235                 if (c == (val & 0xff))
1236                         return (val & FIO_CLIENT_FLAG);
1237
1238                 i++;
1239         }
1240
1241         return 0;
1242 }
1243
1244 int parse_cmd_client(void *client, char *opt)
1245 {
1246         return fio_client_add_cmd_option(client, opt);
1247 }
1248
1249 int parse_cmd_line(int argc, char *argv[])
1250 {
1251         struct thread_data *td = NULL;
1252         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1253         char *ostr = cmd_optstr;
1254         int daemonize_server = 0;
1255         void *cur_client = NULL;
1256         int backend = 0;
1257
1258         /*
1259          * Reset optind handling, since we may call this multiple times
1260          * for the backend.
1261          */
1262         optind = 1;
1263
1264         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1265                 did_arg = 1;
1266
1267                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1268                         if (parse_cmd_client(cur_client, argv[optind - 1])) {
1269                                 exit_val = 1;
1270                                 do_exit++;
1271                                 break;
1272                         }
1273                         c &= ~FIO_CLIENT_FLAG;
1274                 }
1275
1276                 switch (c) {
1277                 case 'a':
1278                         smalloc_pool_size = atoi(optarg);
1279                         break;
1280                 case 't':
1281                         def_timeout = atoi(optarg);
1282                         break;
1283                 case 'l':
1284                         write_lat_log = 1;
1285                         break;
1286                 case 'b':
1287                         write_bw_log = 1;
1288                         break;
1289                 case 'o':
1290                         f_out = fopen(optarg, "w+");
1291                         if (!f_out) {
1292                                 perror("fopen output");
1293                                 exit(1);
1294                         }
1295                         f_err = f_out;
1296                         break;
1297                 case 'm':
1298                         terse_output = 1;
1299                         break;
1300                 case 'h':
1301                         if (!cur_client) {
1302                                 usage(argv[0]);
1303                                 do_exit++;
1304                         }
1305                         break;
1306                 case 'c':
1307                         if (!cur_client) {
1308                                 fio_show_option_help(optarg);
1309                                 do_exit++;
1310                         }
1311                         break;
1312                 case 's':
1313                         dump_cmdline = 1;
1314                         break;
1315                 case 'r':
1316                         read_only = 1;
1317                         break;
1318                 case 'v':
1319                         if (!cur_client) {
1320                                 log_info("fio %s\n", fio_version_string);
1321                                 do_exit++;
1322                         }
1323                         break;
1324                 case 'V':
1325                         terse_version = atoi(optarg);
1326                         if (terse_version != 2) {
1327                                 log_err("fio: bad terse version format\n");
1328                                 exit_val = 1;
1329                                 do_exit++;
1330                         }
1331                         break;
1332                 case 'e':
1333                         if (!strcmp("always", optarg))
1334                                 eta_print = FIO_ETA_ALWAYS;
1335                         else if (!strcmp("never", optarg))
1336                                 eta_print = FIO_ETA_NEVER;
1337                         break;
1338                 case 'd':
1339                         if (set_debug(optarg))
1340                                 do_exit++;
1341                         break;
1342                 case 'x': {
1343                         size_t new_size;
1344
1345                         if (!strcmp(optarg, "global")) {
1346                                 log_err("fio: can't use global as only "
1347                                         "section\n");
1348                                 do_exit++;
1349                                 exit_val = 1;
1350                                 break;
1351                         }
1352                         new_size = (nr_job_sections + 1) * sizeof(char *);
1353                         job_sections = realloc(job_sections, new_size);
1354                         job_sections[nr_job_sections] = strdup(optarg);
1355                         nr_job_sections++;
1356                         break;
1357                         }
1358                 case 'p':
1359                         exec_profile = strdup(optarg);
1360                         break;
1361                 case FIO_GETOPT_JOB: {
1362                         const char *opt = l_opts[lidx].name;
1363                         char *val = optarg;
1364
1365                         if (!strncmp(opt, "name", 4) && td) {
1366                                 ret = add_job(td, td->o.name ?: "fio", 0);
1367                                 if (ret)
1368                                         return 0;
1369                                 td = NULL;
1370                         }
1371                         if (!td) {
1372                                 int is_section = !strncmp(opt, "name", 4);
1373                                 int global = 0;
1374
1375                                 if (!is_section || !strncmp(val, "global", 6))
1376                                         global = 1;
1377
1378                                 if (is_section && skip_this_section(val))
1379                                         continue;
1380
1381                                 td = get_new_job(global, &def_thread);
1382                                 if (!td)
1383                                         return 0;
1384                         }
1385
1386                         ret = fio_cmd_option_parse(td, opt, val);
1387                         break;
1388                 }
1389                 case 'w':
1390                         warnings_fatal = 1;
1391                         break;
1392                 case 'j':
1393                         max_jobs = atoi(optarg);
1394                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1395                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1396                                 do_exit++;
1397                                 exit_val = 1;
1398                         }
1399                         break;
1400                 case 'S':
1401                         if (nr_clients) {
1402                                 log_err("fio: can't be both client and server\n");
1403                                 do_exit++;
1404                                 exit_val = 1;
1405                                 break;
1406                         }
1407                         if (optarg)
1408                                 fio_server_set_arg(optarg);
1409                         is_backend = 1;
1410                         backend = 1;
1411                         break;
1412                 case 'D':
1413                         daemonize_server = 1;
1414                         break;
1415                 case 'C':
1416                         if (is_backend) {
1417                                 log_err("fio: can't be both client and server\n");
1418                                 do_exit++;
1419                                 exit_val = 1;
1420                                 break;
1421                         }
1422                         if (fio_client_add(optarg, &cur_client)) {
1423                                 log_err("fio: failed adding client %s\n", optarg);
1424                                 do_exit++;
1425                                 exit_val = 1;
1426                                 break;
1427                         }
1428                         break;
1429                 default:
1430                         do_exit++;
1431                         exit_val = 1;
1432                         break;
1433                 }
1434                 if (do_exit)
1435                         break;
1436         }
1437
1438         if (do_exit) {
1439                 if (exit_val && !(is_backend || nr_clients))
1440                         exit(exit_val);
1441         }
1442
1443         if (nr_clients && fio_clients_connect()) {
1444                 do_exit++;
1445                 exit_val = 1;
1446                 return -1;
1447         }
1448
1449         if (is_backend && backend)
1450                 return fio_start_server(daemonize_server);
1451
1452         if (td) {
1453                 if (!ret)
1454                         ret = add_job(td, td->o.name ?: "fio", 0);
1455         }
1456
1457         while (!ret && optind < argc) {
1458                 ini_idx++;
1459                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1460                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1461                 optind++;
1462         }
1463
1464         return ini_idx;
1465 }
1466
1467 int parse_options(int argc, char *argv[])
1468 {
1469         int job_files, i;
1470
1471         f_out = stdout;
1472         f_err = stderr;
1473
1474         fio_options_fill_optstring();
1475         fio_options_dup_and_init(l_opts);
1476
1477         atexit(free_shm);
1478
1479         if (fill_def_thread())
1480                 return 1;
1481
1482         job_files = parse_cmd_line(argc, argv);
1483
1484         if (job_files > 0) {
1485                 for (i = 0; i < job_files; i++) {
1486                         if (fill_def_thread())
1487                                 return 1;
1488                         if (nr_clients) {
1489                                 if (fio_clients_send_ini(ini_file[i]))
1490                                         return 1;
1491                                 free(ini_file[i]);
1492                         } else if (!is_backend) {
1493                                 if (parse_jobs_ini(ini_file[i], 0, i))
1494                                         return 1;
1495                                 free(ini_file[i]);
1496                         }
1497                 }
1498         }
1499
1500         free(ini_file);
1501         options_mem_free(&def_thread);
1502
1503         if (!thread_number) {
1504                 if (dump_cmdline)
1505                         return 0;
1506                 if (exec_profile)
1507                         return 0;
1508                 if (is_backend || nr_clients)
1509                         return 0;
1510                 if (did_arg)
1511                         return 0;
1512
1513                 log_err("No jobs(s) defined\n\n");
1514
1515                 if (!did_arg) {
1516                         usage(argv[0]);
1517                         return 1;
1518                 }
1519
1520                 return 0;
1521         }
1522
1523         if (def_thread.o.gtod_offload) {
1524                 fio_gtod_init();
1525                 fio_gtod_offload = 1;
1526                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1527         }
1528
1529         log_info("fio %s\n", fio_version_string);
1530         return 0;
1531 }