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 #include "fio_version.h"
  27
  28 const char fio_version_string[] = FIO_VERSION;
  29
  30 #define FIO_RANDSEED            (0xb1899bedUL)
  31
  32 static char **ini_file;
  33 static int max_jobs = FIO_MAX_JOBS;
  34 static int dump_cmdline;
  35 static int def_timeout;
  36
  37 static struct thread_data def_thread;
  38 struct thread_data *threads = NULL;
  39
  40 int exitall_on_terminate = 0;
  41 int terse_output = 0;
  42 int eta_print;
  43 unsigned long long mlock_size = 0;
  44 FILE *f_out = NULL;
  45 FILE *f_err = NULL;
  46 char **job_sections = NULL;
  47 int nr_job_sections = 0;
  48 char *exec_profile = NULL;
  49 int warnings_fatal = 0;
  50 int terse_version = 3;
  51 int is_backend = 0;
  52 int nr_clients = 0;
  53 int log_syslog = 0;
  54
  55 int write_bw_log = 0;
  56 int read_only = 0;
  57
  58 static int write_lat_log;
  59
  60 static int prev_group_jobs;
  61
  62 unsigned long fio_debug = 0;
  63 unsigned int fio_debug_jobno = -1;
  64 unsigned int *fio_debug_jobp = NULL;
  65
  66 static char cmd_optstr[256];
  67 static int did_arg;
  68
  69 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  70         { .u.f  =  1.00 },
  71         { .u.f  =  5.00 },
  72         { .u.f  = 10.00 },
  73         { .u.f  = 20.00 },
  74         { .u.f  = 30.00 },
  75         { .u.f  = 40.00 },
  76         { .u.f  = 50.00 },
  77         { .u.f  = 60.00 },
  78         { .u.f  = 70.00 },
  79         { .u.f  = 80.00 },
  80         { .u.f  = 90.00 },
  81         { .u.f  = 95.00 },
  82         { .u.f  = 99.00 },
  83         { .u.f  = 99.50 },
  84         { .u.f  = 99.90 },
  85         { .u.f  = 99.95 },
  86         { .u.f  = 99.99 },
  87 };
  88
  89 #define FIO_CLIENT_FLAG         (1 << 16)
  90
  91 /*
  92  * Command line options. These will contain the above, plus a few
  93  * extra that only pertain to fio itself and not jobs.
  94  */
  95 static struct option l_opts[FIO_NR_OPTIONS] = {
  96         {
  97                 .name           = (char *) "output",
  98                 .has_arg        = required_argument,
  99                 .val            = 'o' | FIO_CLIENT_FLAG,
 100         },
 101         {
 102                 .name           = (char *) "timeout",
 103                 .has_arg        = required_argument,
 104                 .val            = 't' | FIO_CLIENT_FLAG,
 105         },
 106         {
 107                 .name           = (char *) "latency-log",
 108                 .has_arg        = required_argument,
 109                 .val            = 'l' | FIO_CLIENT_FLAG,
 110         },
 111         {
 112                 .name           = (char *) "bandwidth-log",
 113                 .has_arg        = required_argument,
 114                 .val            = 'b' | FIO_CLIENT_FLAG,
 115         },
 116         {
 117                 .name           = (char *) "minimal",
 118                 .has_arg        = optional_argument,
 119                 .val            = 'm' | FIO_CLIENT_FLAG,
 120         },
 121         {
 122                 .name           = (char *) "version",
 123                 .has_arg        = no_argument,
 124                 .val            = 'v' | FIO_CLIENT_FLAG,
 125         },
 126         {
 127                 .name           = (char *) "help",
 128                 .has_arg        = no_argument,
 129                 .val            = 'h' | FIO_CLIENT_FLAG,
 130         },
 131         {
 132                 .name           = (char *) "cmdhelp",
 133                 .has_arg        = optional_argument,
 134                 .val            = 'c' | FIO_CLIENT_FLAG,
 135         },
 136         {
 137                 .name              = (char *) "enghelp",
 138                 .has_arg        = optional_argument,
 139                 .val                = 'i' | FIO_CLIENT_FLAG,
 140         },
 141         {
 142                 .name           = (char *) "showcmd",
 143                 .has_arg        = no_argument,
 144                 .val            = 's' | FIO_CLIENT_FLAG,
 145         },
 146         {
 147                 .name           = (char *) "readonly",
 148                 .has_arg        = no_argument,
 149                 .val            = 'r' | FIO_CLIENT_FLAG,
 150         },
 151         {
 152                 .name           = (char *) "eta",
 153                 .has_arg        = required_argument,
 154                 .val            = 'e' | FIO_CLIENT_FLAG,
 155         },
 156         {
 157                 .name           = (char *) "debug",
 158                 .has_arg        = required_argument,
 159                 .val            = 'd' | FIO_CLIENT_FLAG,
 160         },
 161         {
 162                 .name           = (char *) "section",
 163                 .has_arg        = required_argument,
 164                 .val            = 'x' | FIO_CLIENT_FLAG,
 165         },
 166         {
 167                 .name           = (char *) "alloc-size",
 168                 .has_arg        = required_argument,
 169                 .val            = 'a' | FIO_CLIENT_FLAG,
 170         },
 171         {
 172                 .name           = (char *) "profile",
 173                 .has_arg        = required_argument,
 174                 .val            = 'p' | FIO_CLIENT_FLAG,
 175         },
 176         {
 177                 .name           = (char *) "warnings-fatal",
 178                 .has_arg        = no_argument,
 179                 .val            = 'w' | FIO_CLIENT_FLAG,
 180         },
 181         {
 182                 .name           = (char *) "max-jobs",
 183                 .has_arg        = required_argument,
 184                 .val            = 'j' | FIO_CLIENT_FLAG,
 185         },
 186         {
 187                 .name           = (char *) "terse-version",
 188                 .has_arg        = required_argument,
 189                 .val            = 'V' | FIO_CLIENT_FLAG,
 190         },
 191         {
 192                 .name           = (char *) "server",
 193                 .has_arg        = optional_argument,
 194                 .val            = 'S',
 195         },
 196         {       .name           = (char *) "daemonize",
 197                 .has_arg        = required_argument,
 198                 .val            = 'D',
 199         },
 200         {
 201                 .name           = (char *) "client",
 202                 .has_arg        = required_argument,
 203                 .val            = 'C',
 204         },
 205         {
 206                 .name           = NULL,
 207         },
 208 };
 209
 210 void free_threads_shm(void)
 211 {
 212         struct shmid_ds sbuf;
 213
 214         if (threads) {
 215                 void *tp = threads;
 216
 217                 threads = NULL;
 218                 shmdt(tp);
 219                 shmctl(shm_id, IPC_RMID, &sbuf);
 220                 shm_id = -1;
 221         }
 222 }
 223
 224 void free_shm(void)
 225 {
 226         if (threads) {
 227                 file_hash_exit();
 228                 flow_exit();
 229                 fio_debug_jobp = NULL;
 230                 free_threads_shm();
 231         }
 232
 233         scleanup();
 234 }
 235
 236 /*
 237  * The thread area is shared between the main process and the job
 238  * threads/processes. So setup a shared memory segment that will hold
 239  * all the job info. We use the end of the region for keeping track of
 240  * open files across jobs, for file sharing.
 241  */
 242 static int setup_thread_area(void)
 243 {
 244         void *hash;
 245
 246         if (threads)
 247                 return 0;
 248
 249         /*
 250          * 1024 is too much on some machines, scale max_jobs if
 251          * we get a failure that looks like too large a shm segment
 252          */
 253         do {
 254                 size_t size = max_jobs * sizeof(struct thread_data);
 255
 256                 size += file_hash_size;
 257                 size += sizeof(unsigned int);
 258
 259                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 260                 if (shm_id != -1)
 261                         break;
 262                 if (errno != EINVAL && errno != ENOMEM) {
 263                         perror("shmget");
 264                         break;
 265                 }
 266
 267                 max_jobs >>= 1;
 268         } while (max_jobs);
 269
 270         if (shm_id == -1)
 271                 return 1;
 272
 273         threads = shmat(shm_id, NULL, 0);
 274         if (threads == (void *) -1) {
 275                 perror("shmat");
 276                 return 1;
 277         }
 278
 279         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 280         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 281         fio_debug_jobp = (void *) hash + file_hash_size;
 282         *fio_debug_jobp = -1;
 283         file_hash_init(hash);
 284
 285         flow_init();
 286
 287         return 0;
 288 }
 289
 290 /*
 291  * Return a free job structure.
 292  */
 293 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 294                                        int preserve_eo)
 295 {
 296         struct thread_data *td;
 297
 298         if (global)
 299                 return &def_thread;
 300         if (setup_thread_area()) {
 301                 log_err("error: failed to setup shm segment\n");
 302                 return NULL;
 303         }
 304         if (thread_number >= max_jobs) {
 305                 log_err("error: maximum number of jobs (%d) reached.\n",
 306                                 max_jobs);
 307                 return NULL;
 308         }
 309
 310         td = &threads[thread_number++];
 311         *td = *parent;
 312
 313         td->io_ops = NULL;
 314         if (!preserve_eo)
 315                 td->eo = NULL;
 316
 317         td->o.uid = td->o.gid = -1U;
 318
 319         dup_files(td, parent);
 320         fio_options_mem_dupe(td);
 321
 322         profile_add_hooks(td);
 323
 324         td->thread_number = thread_number;
 325         return td;
 326 }
 327
 328 static void put_job(struct thread_data *td)
 329 {
 330         if (td == &def_thread)
 331                 return;
 332
 333         profile_td_exit(td);
 334         flow_exit_job(td);
 335
 336         if (td->error)
 337                 log_info("fio: %s\n", td->verror);
 338
 339         fio_options_free(td);
 340         if (td->io_ops)
 341                 free_ioengine(td);
 342
 343         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 344         thread_number--;
 345 }
 346
 347 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 348 {
 349         unsigned int bs = td->o.min_bs[ddir];
 350
 351         assert(ddir_rw(ddir));
 352
 353         if (td->o.rate[ddir])
 354                 td->rate_bps[ddir] = td->o.rate[ddir];
 355         else
 356                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 357
 358         if (!td->rate_bps[ddir]) {
 359                 log_err("rate lower than supported\n");
 360                 return -1;
 361         }
 362
 363         td->rate_pending_usleep[ddir] = 0;
 364         return 0;
 365 }
 366
 367 static int setup_rate(struct thread_data *td)
 368 {
 369         int ret = 0;
 370
 371         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 372                 ret = __setup_rate(td, DDIR_READ);
 373         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 374                 ret |= __setup_rate(td, DDIR_WRITE);
 375
 376         return ret;
 377 }
 378
 379 static int fixed_block_size(struct thread_options *o)
 380 {
 381         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 382                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 383                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 384 }
 385
 386 /*
 387  * Lazy way of fixing up options that depend on each other. We could also
 388  * define option callback handlers, but this is easier.
 389  */
 390 static int fixup_options(struct thread_data *td)
 391 {
 392         struct thread_options *o = &td->o;
 393         int ret = 0;
 394
 395 #ifndef FIO_HAVE_PSHARED_MUTEX
 396         if (!o->use_thread) {
 397                 log_info("fio: this platform does not support process shared"
 398                          " mutexes, forcing use of threads. Use the 'thread'"
 399                          " option to get rid of this warning.\n");
 400                 o->use_thread = 1;
 401                 ret = warnings_fatal;
 402         }
 403 #endif
 404
 405         if (o->write_iolog_file && o->read_iolog_file) {
 406                 log_err("fio: read iolog overrides write_iolog\n");
 407                 free(o->write_iolog_file);
 408                 o->write_iolog_file = NULL;
 409                 ret = warnings_fatal;
 410         }
 411
 412         /*
 413          * only really works with 1 file
 414          */
 415         if (o->zone_size && o->open_files == 1)
 416                 o->zone_size = 0;
 417
 418         /*
 419          * If zone_range isn't specified, backward compatibility dictates it
 420          * should be made equal to zone_size.
 421          */
 422         if (o->zone_size && !o->zone_range)
 423                 o->zone_range = o->zone_size;
 424
 425         /*
 426          * Reads can do overwrites, we always need to pre-create the file
 427          */
 428         if (td_read(td) || td_rw(td))
 429                 o->overwrite = 1;
 430
 431         if (!o->min_bs[DDIR_READ])
 432                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 433         if (!o->max_bs[DDIR_READ])
 434                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 435         if (!o->min_bs[DDIR_WRITE])
 436                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 437         if (!o->max_bs[DDIR_WRITE])
 438                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 439
 440         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 441
 442         /*
 443          * For random IO, allow blockalign offset other than min_bs.
 444          */
 445         if (!o->ba[DDIR_READ] || !td_random(td))
 446                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 447         if (!o->ba[DDIR_WRITE] || !td_random(td))
 448                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 449
 450         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 451             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 452             !o->norandommap) {
 453                 log_err("fio: Any use of blockalign= turns off randommap\n");
 454                 o->norandommap = 1;
 455                 ret = warnings_fatal;
 456         }
 457
 458         if (!o->file_size_high)
 459                 o->file_size_high = o->file_size_low;
 460
 461         if (o->norandommap && o->verify != VERIFY_NONE
 462             && !fixed_block_size(o))  {
 463                 log_err("fio: norandommap given for variable block sizes, "
 464                         "verify disabled\n");
 465                 o->verify = VERIFY_NONE;
 466                 ret = warnings_fatal;
 467         }
 468         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 469                 log_err("fio: bs_unaligned may not work with raw io\n");
 470
 471         /*
 472          * thinktime_spin must be less than thinktime
 473          */
 474         if (o->thinktime_spin > o->thinktime)
 475                 o->thinktime_spin = o->thinktime;
 476
 477         /*
 478          * The low water mark cannot be bigger than the iodepth
 479          */
 480         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 481                 /*
 482                  * syslet work around - if the workload is sequential,
 483                  * we want to let the queue drain all the way down to
 484                  * avoid seeking between async threads
 485                  */
 486                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 487                         o->iodepth_low = 1;
 488                 else
 489                         o->iodepth_low = o->iodepth;
 490         }
 491
 492         /*
 493          * If batch number isn't set, default to the same as iodepth
 494          */
 495         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 496                 o->iodepth_batch = o->iodepth;
 497
 498         if (o->nr_files > td->files_index)
 499                 o->nr_files = td->files_index;
 500
 501         if (o->open_files > o->nr_files || !o->open_files)
 502                 o->open_files = o->nr_files;
 503
 504         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 505             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 506                 o->rate_iops_min[1]))) {
 507                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 508                 ret = 1;
 509         }
 510         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 511             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 512             (o->rate_iops[1] < o->rate_iops_min[1])) {
 513                 log_err("fio: minimum rate exceeds rate\n");
 514                 ret = 1;
 515         }
 516
 517         if (!o->timeout && o->time_based) {
 518                 log_err("fio: time_based requires a runtime/timeout setting\n");
 519                 o->time_based = 0;
 520                 ret = warnings_fatal;
 521         }
 522
 523         if (o->fill_device && !o->size)
 524                 o->size = -1ULL;
 525
 526         if (o->verify != VERIFY_NONE) {
 527                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 528                         log_info("Multiple writers may overwrite blocks that "
 529                                 "belong to other jobs. This can cause "
 530                                 "verification failures.\n");
 531                         ret = warnings_fatal;
 532                 }
 533
 534                 o->refill_buffers = 1;
 535                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 536                     !o->verify_interval)
 537                         o->verify_interval = o->min_bs[DDIR_WRITE];
 538         }
 539
 540         if (o->pre_read) {
 541                 o->invalidate_cache = 0;
 542                 if (td->io_ops->flags & FIO_PIPEIO) {
 543                         log_info("fio: cannot pre-read files with an IO engine"
 544                                  " that isn't seekable. Pre-read disabled.\n");
 545                         ret = warnings_fatal;
 546                 }
 547         }
 548
 549 #ifndef FIO_HAVE_FDATASYNC
 550         if (o->fdatasync_blocks) {
 551                 log_info("fio: this platform does not support fdatasync()"
 552                          " falling back to using fsync().  Use the 'fsync'"
 553                          " option instead of 'fdatasync' to get rid of"
 554                          " this warning\n");
 555                 o->fsync_blocks = o->fdatasync_blocks;
 556                 o->fdatasync_blocks = 0;
 557                 ret = warnings_fatal;
 558         }
 559 #endif
 560
 561 #ifdef WIN32
 562         /*
 563          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 564          * so fail if we're passed those flags
 565          */
 566         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 567                 log_err("fio: Windows does not support direct or non-buffered io with"
 568                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 569                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 570                 ret = 1;
 571         }
 572 #endif
 573
 574         /*
 575          * For fully compressible data, just zero them at init time.
 576          * It's faster than repeatedly filling it.
 577          */
 578         if (td->o.compress_percentage == 100) {
 579                 td->o.zero_buffers = 1;
 580                 td->o.compress_percentage = 0;
 581         }
 582
 583         return ret;
 584 }
 585
 586 /*
 587  * This function leaks the buffer
 588  */
 589 char *fio_uint_to_kmg(unsigned int val)
 590 {
 591         char *buf = malloc(32);
 592         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 593         char *p = post;
 594
 595         do {
 596                 if (val & 1023)
 597                         break;
 598
 599                 val >>= 10;
 600                 p++;
 601         } while (*p);
 602
 603         snprintf(buf, 31, "%u%c", val, *p);
 604         return buf;
 605 }
 606
 607 /* External engines are specified by "external:name.o") */
 608 static const char *get_engine_name(const char *str)
 609 {
 610         char *p = strstr(str, ":");
 611
 612         if (!p)
 613                 return str;
 614
 615         p++;
 616         strip_blank_front(&p);
 617         strip_blank_end(p);
 618         return p;
 619 }
 620
 621 static int exists_and_not_file(const char *filename)
 622 {
 623         struct stat sb;
 624
 625         if (lstat(filename, &sb) == -1)
 626                 return 0;
 627
 628         /* \\.\ is the device namespace in Windows, where every file
 629          * is a device node */
 630         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 631                 return 0;
 632
 633         return 1;
 634 }
 635
 636 static void td_fill_rand_seeds_os(struct thread_data *td)
 637 {
 638         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 639         os_random_seed(td->rand_seeds[1], &td->verify_state);
 640         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 641
 642         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 643                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 644
 645         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 646         os_random_seed(td->rand_seeds[6], &td->trim_state);
 647
 648         if (!td_random(td))
 649                 return;
 650
 651         if (td->o.rand_repeatable)
 652                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 653
 654         os_random_seed(td->rand_seeds[4], &td->random_state);
 655 }
 656
 657 static void td_fill_rand_seeds_internal(struct thread_data *td)
 658 {
 659         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 660         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 661         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 662
 663         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 664                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 665
 666         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 667         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 668
 669         if (!td_random(td))
 670                 return;
 671
 672         if (td->o.rand_repeatable)
 673                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 674
 675         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 676 }
 677
 678 void td_fill_rand_seeds(struct thread_data *td)
 679 {
 680         if (td->o.use_os_rand)
 681                 td_fill_rand_seeds_os(td);
 682         else
 683                 td_fill_rand_seeds_internal(td);
 684
 685         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 686 }
 687
 688
 689 /*
 690  * Initializes the ioengine configured for a job, if it has not been done so
 691  * already.
 692  */
 693 int ioengine_load(struct thread_data *td)
 694 {
 695         const char *engine;
 696
 697         /*
 698          * Engine has already been loaded.
 699          */
 700         if (td->io_ops)
 701                 return 0;
 702
 703         engine = get_engine_name(td->o.ioengine);
 704         td->io_ops = load_ioengine(td, engine);
 705         if (!td->io_ops) {
 706                 log_err("fio: failed to load engine %s\n", engine);
 707                 return 1;
 708         }
 709
 710         if (td->io_ops->option_struct_size && td->io_ops->options) {
 711                 /*
 712                  * In cases where td->eo is set, clone it for a child thread.
 713                  * This requires that the parent thread has the same ioengine,
 714                  * but that requirement must be enforced by the code which
 715                  * cloned the thread.
 716                  */
 717                 void *origeo = td->eo;
 718                 /*
 719                  * Otherwise use the default thread options.
 720                  */
 721                 if (!origeo && td != &def_thread && def_thread.eo &&
 722                     def_thread.io_ops->options == td->io_ops->options)
 723                         origeo = def_thread.eo;
 724
 725                 options_init(td->io_ops->options);
 726                 td->eo = malloc(td->io_ops->option_struct_size);
 727                 /*
 728                  * Use the default thread as an option template if this uses the
 729                  * same options structure and there are non-default options
 730                  * used.
 731                  */
 732                 if (origeo) {
 733                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 734                         options_mem_dupe(td->eo, td->io_ops->options);
 735                 } else {
 736                         memset(td->eo, 0, td->io_ops->option_struct_size);
 737                         fill_default_options(td->eo, td->io_ops->options);
 738                 }
 739                 *(struct thread_data **)td->eo = td;
 740         }
 741
 742         return 0;
 743 }
 744
 745 /*
 746  * Adds a job to the list of things todo. Sanitizes the various options
 747  * to make sure we don't have conflicts, and initializes various
 748  * members of td.
 749  */
 750 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
 751                    int recursed, int client_type)
 752 {
 753         unsigned int i;
 754         char fname[PATH_MAX];
 755         int numjobs, file_alloced;
 756
 757         /*
 758          * the def_thread is just for options, it's not a real job
 759          */
 760         if (td == &def_thread)
 761                 return 0;
 762
 763         /*
 764          * if we are just dumping the output command line, don't add the job
 765          */
 766         if (dump_cmdline) {
 767                 put_job(td);
 768                 return 0;
 769         }
 770
 771         td->client_type = client_type;
 772
 773         if (profile_td_init(td))
 774                 goto err;
 775
 776         if (ioengine_load(td))
 777                 goto err;
 778
 779         if (td->o.odirect)
 780                 td->io_ops->flags |= FIO_RAWIO;
 781
 782         file_alloced = 0;
 783         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 784                 file_alloced = 1;
 785
 786                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 787                         add_file(td, jobname);
 788                 else {
 789                         for (i = 0; i < td->o.nr_files; i++) {
 790                                 sprintf(fname, "%s.%d.%d", jobname,
 791                                                         td->thread_number, i);
 792                                 add_file(td, fname);
 793                         }
 794                 }
 795         }
 796
 797         if (fixup_options(td))
 798                 goto err;
 799
 800         flow_init_job(td);
 801
 802         /*
 803          * IO engines only need this for option callbacks, and the address may
 804          * change in subprocesses.
 805          */
 806         if (td->eo)
 807                 *(struct thread_data **)td->eo = NULL;
 808
 809         if (td->io_ops->flags & FIO_DISKLESSIO) {
 810                 struct fio_file *f;
 811
 812                 for_each_file(td, f, i)
 813                         f->real_file_size = -1ULL;
 814         }
 815
 816         td->mutex = fio_mutex_init(0);
 817
 818         td->ts.clat_percentiles = td->o.clat_percentiles;
 819         if (td->o.overwrite_plist)
 820                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 821         else
 822                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 823
 824         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 825         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 826         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
 827         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 828         td->ddir_seq_nr = td->o.ddir_seq_nr;
 829
 830         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 831                 prev_group_jobs = 0;
 832                 groupid++;
 833         }
 834
 835         td->groupid = groupid;
 836         prev_group_jobs++;
 837
 838         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 839                 td_verror(td, errno, "init_random_state");
 840                 goto err;
 841         }
 842
 843         if (setup_rate(td))
 844                 goto err;
 845
 846         if (td->o.write_lat_log) {
 847                 setup_log(&td->lat_log, td->o.log_avg_msec, IO_LOG_TYPE_LAT);
 848                 setup_log(&td->slat_log, td->o.log_avg_msec, IO_LOG_TYPE_SLAT);
 849                 setup_log(&td->clat_log, td->o.log_avg_msec, IO_LOG_TYPE_CLAT);
 850         }
 851         if (td->o.write_bw_log)
 852                 setup_log(&td->bw_log, td->o.log_avg_msec, IO_LOG_TYPE_BW);
 853         if (td->o.write_iops_log)
 854                 setup_log(&td->iops_log, td->o.log_avg_msec, IO_LOG_TYPE_IOPS);
 855
 856         if (!td->o.name)
 857                 td->o.name = strdup(jobname);
 858
 859         if (!terse_output) {
 860                 if (!job_add_num) {
 861                         if (is_backend && !recursed)
 862                                 fio_server_send_add_job(td);
 863
 864                         if (!(td->io_ops->flags & FIO_NOIO)) {
 865                                 char *c1, *c2, *c3, *c4;
 866
 867                                 c1 = fio_uint_to_kmg(td->o.min_bs[DDIR_READ]);
 868                                 c2 = fio_uint_to_kmg(td->o.max_bs[DDIR_READ]);
 869                                 c3 = fio_uint_to_kmg(td->o.min_bs[DDIR_WRITE]);
 870                                 c4 = fio_uint_to_kmg(td->o.max_bs[DDIR_WRITE]);
 871
 872                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 873                                          " ioengine=%s, iodepth=%u\n",
 874                                                 td->o.name, td->groupid,
 875                                                 ddir_str(td->o.td_ddir),
 876                                                 c1, c2, c3, c4,
 877                                                 td->io_ops->name,
 878                                                 td->o.iodepth);
 879
 880                                 free(c1);
 881                                 free(c2);
 882                                 free(c3);
 883                                 free(c4);
 884                         }
 885                 } else if (job_add_num == 1)
 886                         log_info("...\n");
 887         }
 888
 889         /*
 890          * recurse add identical jobs, clear numjobs and stonewall options
 891          * as they don't apply to sub-jobs
 892          */
 893         numjobs = td->o.numjobs;
 894         while (--numjobs) {
 895                 struct thread_data *td_new = get_new_job(0, td, 1);
 896
 897                 if (!td_new)
 898                         goto err;
 899
 900                 td_new->o.numjobs = 1;
 901                 td_new->o.stonewall = 0;
 902                 td_new->o.new_group = 0;
 903
 904                 if (file_alloced) {
 905                         td_new->o.filename = NULL;
 906                         td_new->files_index = 0;
 907                         td_new->files_size = 0;
 908                         td_new->files = NULL;
 909                 }
 910
 911                 job_add_num = numjobs - 1;
 912
 913                 if (add_job(td_new, jobname, job_add_num, 1, client_type))
 914                         goto err;
 915         }
 916
 917         return 0;
 918 err:
 919         put_job(td);
 920         return -1;
 921 }
 922
 923 /*
 924  * Parse as if 'o' was a command line
 925  */
 926 void add_job_opts(const char **o, int client_type)
 927 {
 928         struct thread_data *td, *td_parent;
 929         int i, in_global = 1;
 930         char jobname[32];
 931
 932         i = 0;
 933         td_parent = td = NULL;
 934         while (o[i]) {
 935                 if (!strncmp(o[i], "name", 4)) {
 936                         in_global = 0;
 937                         if (td)
 938                                 add_job(td, jobname, 0, 0, client_type);
 939                         td = NULL;
 940                         sprintf(jobname, "%s", o[i] + 5);
 941                 }
 942                 if (in_global && !td_parent)
 943                         td_parent = get_new_job(1, &def_thread, 0);
 944                 else if (!in_global && !td) {
 945                         if (!td_parent)
 946                                 td_parent = &def_thread;
 947                         td = get_new_job(0, td_parent, 0);
 948                 }
 949                 if (in_global)
 950                         fio_options_parse(td_parent, (char **) &o[i], 1);
 951                 else
 952                         fio_options_parse(td, (char **) &o[i], 1);
 953                 i++;
 954         }
 955
 956         if (td)
 957                 add_job(td, jobname, 0, 0, client_type);
 958 }
 959
 960 static int skip_this_section(const char *name)
 961 {
 962         int i;
 963
 964         if (!nr_job_sections)
 965                 return 0;
 966         if (!strncmp(name, "global", 6))
 967                 return 0;
 968
 969         for (i = 0; i < nr_job_sections; i++)
 970                 if (!strcmp(job_sections[i], name))
 971                         return 0;
 972
 973         return 1;
 974 }
 975
 976 static int is_empty_or_comment(char *line)
 977 {
 978         unsigned int i;
 979
 980         for (i = 0; i < strlen(line); i++) {
 981                 if (line[i] == ';')
 982                         return 1;
 983                 if (line[i] == '#')
 984                         return 1;
 985                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 986                         return 0;
 987         }
 988
 989         return 1;
 990 }
 991
 992 /*
 993  * This is our [ini] type file parser.
 994  */
 995 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
 996 {
 997         unsigned int global;
 998         struct thread_data *td;
 999         char *string, *name;
1000         FILE *f;
1001         char *p;
1002         int ret = 0, stonewall;
1003         int first_sect = 1;
1004         int skip_fgets = 0;
1005         int inside_skip = 0;
1006         char **opts;
1007         int i, alloc_opts, num_opts;
1008
1009         if (is_buf)
1010                 f = NULL;
1011         else {
1012                 if (!strcmp(file, "-"))
1013                         f = stdin;
1014                 else
1015                         f = fopen(file, "r");
1016
1017                 if (!f) {
1018                         perror("fopen job file");
1019                         return 1;
1020                 }
1021         }
1022
1023         string = malloc(4096);
1024
1025         /*
1026          * it's really 256 + small bit, 280 should suffice
1027          */
1028         name = malloc(280);
1029         memset(name, 0, 280);
1030
1031         alloc_opts = 8;
1032         opts = malloc(sizeof(char *) * alloc_opts);
1033         num_opts = 0;
1034
1035         stonewall = stonewall_flag;
1036         do {
1037                 /*
1038                  * if skip_fgets is set, we already have loaded a line we
1039                  * haven't handled.
1040                  */
1041                 if (!skip_fgets) {
1042                         if (is_buf)
1043                                 p = strsep(&file, "\n");
1044                         else
1045                                 p = fgets(string, 4096, f);
1046                         if (!p)
1047                                 break;
1048                 }
1049
1050                 skip_fgets = 0;
1051                 strip_blank_front(&p);
1052                 strip_blank_end(p);
1053
1054                 if (is_empty_or_comment(p))
1055                         continue;
1056                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1057                         if (inside_skip)
1058                                 continue;
1059                         log_err("fio: option <%s> outside of [] job section\n",
1060                                                                         p);
1061                         break;
1062                 }
1063
1064                 name[strlen(name) - 1] = '\0';
1065
1066                 if (skip_this_section(name)) {
1067                         inside_skip = 1;
1068                         continue;
1069                 } else
1070                         inside_skip = 0;
1071
1072                 global = !strncmp(name, "global", 6);
1073
1074                 if (dump_cmdline) {
1075                         if (first_sect)
1076                                 log_info("fio ");
1077                         if (!global)
1078                                 log_info("--name=%s ", name);
1079                         first_sect = 0;
1080                 }
1081
1082                 td = get_new_job(global, &def_thread, 0);
1083                 if (!td) {
1084                         ret = 1;
1085                         break;
1086                 }
1087
1088                 /*
1089                  * Seperate multiple job files by a stonewall
1090                  */
1091                 if (!global && stonewall) {
1092                         td->o.stonewall = stonewall;
1093                         stonewall = 0;
1094                 }
1095
1096                 num_opts = 0;
1097                 memset(opts, 0, alloc_opts * sizeof(char *));
1098
1099                 while (1) {
1100                         if (is_buf)
1101                                 p = strsep(&file, "\n");
1102                         else
1103                                 p = fgets(string, 4096, f);
1104                         if (!p)
1105                                 break;
1106
1107                         if (is_empty_or_comment(p))
1108                                 continue;
1109
1110                         strip_blank_front(&p);
1111
1112                         /*
1113                          * new section, break out and make sure we don't
1114                          * fgets() a new line at the top.
1115                          */
1116                         if (p[0] == '[') {
1117                                 skip_fgets = 1;
1118                                 break;
1119                         }
1120
1121                         strip_blank_end(p);
1122
1123                         if (num_opts == alloc_opts) {
1124                                 alloc_opts <<= 1;
1125                                 opts = realloc(opts,
1126                                                 alloc_opts * sizeof(char *));
1127                         }
1128
1129                         opts[num_opts] = strdup(p);
1130                         num_opts++;
1131                 }
1132
1133                 ret = fio_options_parse(td, opts, num_opts);
1134                 if (!ret) {
1135                         if (dump_cmdline)
1136                                 for (i = 0; i < num_opts; i++)
1137                                         log_info("--%s ", opts[i]);
1138
1139                         ret = add_job(td, name, 0, 0, type);
1140                 } else {
1141                         log_err("fio: job %s dropped\n", name);
1142                         put_job(td);
1143                 }
1144
1145                 for (i = 0; i < num_opts; i++)
1146                         free(opts[i]);
1147                 num_opts = 0;
1148         } while (!ret);
1149
1150         if (dump_cmdline)
1151                 log_info("\n");
1152
1153         i = 0;
1154         while (i < nr_job_sections) {
1155                 free(job_sections[i]);
1156                 i++;
1157         }
1158
1159         for (i = 0; i < num_opts; i++)
1160                 free(opts[i]);
1161
1162         free(string);
1163         free(name);
1164         free(opts);
1165         if (!is_buf && f != stdin)
1166                 fclose(f);
1167         return ret;
1168 }
1169
1170 static int fill_def_thread(void)
1171 {
1172         memset(&def_thread, 0, sizeof(def_thread));
1173
1174         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1175         def_thread.o.timeout = def_timeout;
1176
1177         /*
1178          * fill default options
1179          */
1180         fio_fill_default_options(&def_thread);
1181         return 0;
1182 }
1183
1184 static void usage(const char *name)
1185 {
1186         printf("%s\n", fio_version_string);
1187         printf("%s [options] [job options] <job file(s)>\n", name);
1188         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1189                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1190                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1191         printf("  --output\t\tWrite output to file\n");
1192         printf("  --timeout\t\tRuntime in seconds\n");
1193         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1194         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1195         printf("  --minimal\t\tMinimal (terse) output\n");
1196         printf("  --version\t\tPrint version info and exit\n");
1197         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1198         printf("  --help\t\tPrint this page\n");
1199         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1200                 " them\n");
1201         printf("  --enghelp=engine\tPrint ioengine help, or list"
1202                 " available ioengines\n");
1203         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1204                 " cmd\n");
1205         printf("  --showcmd\t\tTurn a job file into command line options\n");
1206         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1207         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1208         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1209                 " writes\n");
1210         printf("  --section=name\tOnly run specified section in job file\n");
1211         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1212                 " (def 1024)\n");
1213         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1214         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1215         printf("  --server=args\t\tStart a backend fio server\n");
1216         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1217         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1218         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1219         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1220 }
1221
1222 #ifdef FIO_INC_DEBUG
1223 struct debug_level debug_levels[] = {
1224         { .name = "process",
1225           .help = "Process creation/exit logging",
1226           .shift = FD_PROCESS,
1227         },
1228         { .name = "file",
1229           .help = "File related action logging",
1230           .shift = FD_FILE,
1231         },
1232         { .name = "io",
1233           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1234           .shift = FD_IO,
1235         },
1236         { .name = "mem",
1237           .help = "Memory allocation/freeing logging",
1238           .shift = FD_MEM,
1239         },
1240         { .name = "blktrace",
1241           .help = "blktrace action logging",
1242           .shift = FD_BLKTRACE,
1243         },
1244         { .name = "verify",
1245           .help = "IO verification action logging",
1246           .shift = FD_VERIFY,
1247         },
1248         { .name = "random",
1249           .help = "Random generation logging",
1250           .shift = FD_RANDOM,
1251         },
1252         { .name = "parse",
1253           .help = "Parser logging",
1254           .shift = FD_PARSE,
1255         },
1256         { .name = "diskutil",
1257           .help = "Disk utility logging actions",
1258           .shift = FD_DISKUTIL,
1259         },
1260         { .name = "job",
1261           .help = "Logging related to creating/destroying jobs",
1262           .shift = FD_JOB,
1263         },
1264         { .name = "mutex",
1265           .help = "Mutex logging",
1266           .shift = FD_MUTEX
1267         },
1268         { .name = "profile",
1269           .help = "Logging related to profiles",
1270           .shift = FD_PROFILE,
1271         },
1272         { .name = "time",
1273           .help = "Logging related to time keeping functions",
1274           .shift = FD_TIME,
1275         },
1276         { .name = "net",
1277           .help = "Network logging",
1278           .shift = FD_NET,
1279         },
1280         { .name = NULL, },
1281 };
1282
1283 static int set_debug(const char *string)
1284 {
1285         struct debug_level *dl;
1286         char *p = (char *) string;
1287         char *opt;
1288         int i;
1289
1290         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1291                 log_info("fio: dumping debug options:");
1292                 for (i = 0; debug_levels[i].name; i++) {
1293                         dl = &debug_levels[i];
1294                         log_info("%s,", dl->name);
1295                 }
1296                 log_info("all\n");
1297                 return 1;
1298         }
1299
1300         while ((opt = strsep(&p, ",")) != NULL) {
1301                 int found = 0;
1302
1303                 if (!strncmp(opt, "all", 3)) {
1304                         log_info("fio: set all debug options\n");
1305                         fio_debug = ~0UL;
1306                         continue;
1307                 }
1308
1309                 for (i = 0; debug_levels[i].name; i++) {
1310                         dl = &debug_levels[i];
1311                         found = !strncmp(opt, dl->name, strlen(dl->name));
1312                         if (!found)
1313                                 continue;
1314
1315                         if (dl->shift == FD_JOB) {
1316                                 opt = strchr(opt, ':');
1317                                 if (!opt) {
1318                                         log_err("fio: missing job number\n");
1319                                         break;
1320                                 }
1321                                 opt++;
1322                                 fio_debug_jobno = atoi(opt);
1323                                 log_info("fio: set debug jobno %d\n",
1324                                                         fio_debug_jobno);
1325                         } else {
1326                                 log_info("fio: set debug option %s\n", opt);
1327                                 fio_debug |= (1UL << dl->shift);
1328                         }
1329                         break;
1330                 }
1331
1332                 if (!found)
1333                         log_err("fio: debug mask %s not found\n", opt);
1334         }
1335         return 0;
1336 }
1337 #else
1338 static int set_debug(const char *string)
1339 {
1340         log_err("fio: debug tracing not included in build\n");
1341         return 1;
1342 }
1343 #endif
1344
1345 static void fio_options_fill_optstring(void)
1346 {
1347         char *ostr = cmd_optstr;
1348         int i, c;
1349
1350         c = i = 0;
1351         while (l_opts[i].name) {
1352                 ostr[c++] = l_opts[i].val;
1353                 if (l_opts[i].has_arg == required_argument)
1354                         ostr[c++] = ':';
1355                 else if (l_opts[i].has_arg == optional_argument) {
1356                         ostr[c++] = ':';
1357                         ostr[c++] = ':';
1358                 }
1359                 i++;
1360         }
1361         ostr[c] = '\0';
1362 }
1363
1364 static int client_flag_set(char c)
1365 {
1366         int i;
1367
1368         i = 0;
1369         while (l_opts[i].name) {
1370                 int val = l_opts[i].val;
1371
1372                 if (c == (val & 0xff))
1373                         return (val & FIO_CLIENT_FLAG);
1374
1375                 i++;
1376         }
1377
1378         return 0;
1379 }
1380
1381 void parse_cmd_client(void *client, char *opt)
1382 {
1383         fio_client_add_cmd_option(client, opt);
1384 }
1385
1386 int parse_cmd_line(int argc, char *argv[], int client_type)
1387 {
1388         struct thread_data *td = NULL;
1389         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1390         char *ostr = cmd_optstr;
1391         void *pid_file = NULL;
1392         void *cur_client = NULL;
1393         int backend = 0;
1394
1395         /*
1396          * Reset optind handling, since we may call this multiple times
1397          * for the backend.
1398          */
1399         optind = 1;
1400
1401         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1402                 did_arg = 1;
1403
1404                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1405                         parse_cmd_client(cur_client, argv[optind - 1]);
1406                         c &= ~FIO_CLIENT_FLAG;
1407                 }
1408
1409                 switch (c) {
1410                 case 'a':
1411                         smalloc_pool_size = atoi(optarg);
1412                         break;
1413                 case 't':
1414                         def_timeout = atoi(optarg);
1415                         break;
1416                 case 'l':
1417                         write_lat_log = 1;
1418                         break;
1419                 case 'b':
1420                         write_bw_log = 1;
1421                         break;
1422                 case 'o':
1423                         f_out = fopen(optarg, "w+");
1424                         if (!f_out) {
1425                                 perror("fopen output");
1426                                 exit(1);
1427                         }
1428                         f_err = f_out;
1429                         break;
1430                 case 'm':
1431                         terse_output = 1;
1432                         break;
1433                 case 'h':
1434                         if (!cur_client) {
1435                                 usage(argv[0]);
1436                                 do_exit++;
1437                         }
1438                         break;
1439                 case 'c':
1440                         if (!cur_client) {
1441                                 fio_show_option_help(optarg);
1442                                 do_exit++;
1443                         }
1444                         break;
1445                 case 'i':
1446                         if (!cur_client) {
1447                                 fio_show_ioengine_help(optarg);
1448                                 do_exit++;
1449                         }
1450                         break;
1451                 case 's':
1452                         dump_cmdline = 1;
1453                         break;
1454                 case 'r':
1455                         read_only = 1;
1456                         break;
1457                 case 'v':
1458                         if (!cur_client) {
1459                                 log_info("%s\n", fio_version_string);
1460                                 do_exit++;
1461                         }
1462                         break;
1463                 case 'V':
1464                         terse_version = atoi(optarg);
1465                         if (!(terse_version == 2 || terse_version == 3)) {
1466                                 log_err("fio: bad terse version format\n");
1467                                 exit_val = 1;
1468                                 do_exit++;
1469                         }
1470                         break;
1471                 case 'e':
1472                         if (!strcmp("always", optarg))
1473                                 eta_print = FIO_ETA_ALWAYS;
1474                         else if (!strcmp("never", optarg))
1475                                 eta_print = FIO_ETA_NEVER;
1476                         break;
1477                 case 'd':
1478                         if (set_debug(optarg))
1479                                 do_exit++;
1480                         break;
1481                 case 'x': {
1482                         size_t new_size;
1483
1484                         if (!strcmp(optarg, "global")) {
1485                                 log_err("fio: can't use global as only "
1486                                         "section\n");
1487                                 do_exit++;
1488                                 exit_val = 1;
1489                                 break;
1490                         }
1491                         new_size = (nr_job_sections + 1) * sizeof(char *);
1492                         job_sections = realloc(job_sections, new_size);
1493                         job_sections[nr_job_sections] = strdup(optarg);
1494                         nr_job_sections++;
1495                         break;
1496                         }
1497                 case 'p':
1498                         exec_profile = strdup(optarg);
1499                         break;
1500                 case FIO_GETOPT_JOB: {
1501                         const char *opt = l_opts[lidx].name;
1502                         char *val = optarg;
1503
1504                         if (!strncmp(opt, "name", 4) && td) {
1505                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1506                                 if (ret)
1507                                         return 0;
1508                                 td = NULL;
1509                         }
1510                         if (!td) {
1511                                 int is_section = !strncmp(opt, "name", 4);
1512                                 int global = 0;
1513
1514                                 if (!is_section || !strncmp(val, "global", 6))
1515                                         global = 1;
1516
1517                                 if (is_section && skip_this_section(val))
1518                                         continue;
1519
1520                                 td = get_new_job(global, &def_thread, 1);
1521                                 if (!td || ioengine_load(td))
1522                                         return 0;
1523                                 fio_options_set_ioengine_opts(l_opts, td);
1524                         }
1525
1526                         ret = fio_cmd_option_parse(td, opt, val);
1527
1528                         if (!ret && !strcmp(opt, "ioengine")) {
1529                                 free_ioengine(td);
1530                                 if (ioengine_load(td))
1531                                         return 0;
1532                                 fio_options_set_ioengine_opts(l_opts, td);
1533                         }
1534                         break;
1535                 }
1536                 case FIO_GETOPT_IOENGINE: {
1537                         const char *opt = l_opts[lidx].name;
1538                         char *val = optarg;
1539                         opt = l_opts[lidx].name;
1540                         val = optarg;
1541                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1542                         break;
1543                 }
1544                 case 'w':
1545                         warnings_fatal = 1;
1546                         break;
1547                 case 'j':
1548                         max_jobs = atoi(optarg);
1549                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1550                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1551                                 do_exit++;
1552                                 exit_val = 1;
1553                         }
1554                         break;
1555                 case 'S':
1556                         if (nr_clients) {
1557                                 log_err("fio: can't be both client and server\n");
1558                                 do_exit++;
1559                                 exit_val = 1;
1560                                 break;
1561                         }
1562                         if (optarg)
1563                                 fio_server_set_arg(optarg);
1564                         is_backend = 1;
1565                         backend = 1;
1566                         break;
1567                 case 'D':
1568                         pid_file = strdup(optarg);
1569                         break;
1570                 case 'C':
1571                         if (is_backend) {
1572                                 log_err("fio: can't be both client and server\n");
1573                                 do_exit++;
1574                                 exit_val = 1;
1575                                 break;
1576                         }
1577                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
1578                                 log_err("fio: failed adding client %s\n", optarg);
1579                                 do_exit++;
1580                                 exit_val = 1;
1581                                 break;
1582                         }
1583                         break;
1584                 default:
1585                         do_exit++;
1586                         exit_val = 1;
1587                         break;
1588                 }
1589                 if (do_exit)
1590                         break;
1591         }
1592
1593         if (do_exit) {
1594                 if (exit_val && !(is_backend || nr_clients))
1595                         exit(exit_val);
1596         }
1597
1598         if (nr_clients && fio_clients_connect()) {
1599                 do_exit++;
1600                 exit_val = 1;
1601                 return -1;
1602         }
1603
1604         if (is_backend && backend)
1605                 return fio_start_server(pid_file);
1606
1607         if (td) {
1608                 if (!ret)
1609                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1610         }
1611
1612         while (!ret && optind < argc) {
1613                 ini_idx++;
1614                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1615                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1616                 optind++;
1617         }
1618
1619         return ini_idx;
1620 }
1621
1622 int fio_init_options(void)
1623 {
1624         f_out = stdout;
1625         f_err = stderr;
1626
1627         fio_options_fill_optstring();
1628         fio_options_dup_and_init(l_opts);
1629
1630         atexit(free_shm);
1631
1632         if (fill_def_thread())
1633                 return 1;
1634
1635         return 0;
1636 }
1637
1638 extern int fio_check_options(struct thread_options *);
1639
1640 int parse_options(int argc, char *argv[])
1641 {
1642         const int type = FIO_CLIENT_TYPE_CLI;
1643         int job_files, i;
1644
1645         if (fio_init_options())
1646                 return 1;
1647         if (fio_test_cconv(&def_thread.o))
1648                 log_err("fio: failed internal cconv test\n");
1649
1650         job_files = parse_cmd_line(argc, argv, type);
1651
1652         if (job_files > 0) {
1653                 for (i = 0; i < job_files; i++) {
1654                         if (fill_def_thread())
1655                                 return 1;
1656                         if (nr_clients) {
1657                                 if (fio_clients_send_ini(ini_file[i]))
1658                                         return 1;
1659                                 free(ini_file[i]);
1660                         } else if (!is_backend) {
1661                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
1662                                         return 1;
1663                                 free(ini_file[i]);
1664                         }
1665                 }
1666         }
1667
1668         free(ini_file);
1669         fio_options_free(&def_thread);
1670
1671         if (!thread_number) {
1672                 if (dump_cmdline)
1673                         return 0;
1674                 if (exec_profile)
1675                         return 0;
1676                 if (is_backend || nr_clients)
1677                         return 0;
1678                 if (did_arg)
1679                         return 0;
1680
1681                 log_err("No jobs(s) defined\n\n");
1682
1683                 if (!did_arg) {
1684                         usage(argv[0]);
1685                         return 1;
1686                 }
1687
1688                 return 0;
1689         }
1690
1691         if (def_thread.o.gtod_offload) {
1692                 fio_gtod_init();
1693                 fio_gtod_offload = 1;
1694                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1695         }
1696
1697         if (!terse_output)
1698                 log_info("%s\n", fio_version_string);
1699
1700         return 0;
1701 }
1702
1703 void options_default_fill(struct thread_options *o)
1704 {
1705         memcpy(o, &def_thread.o, sizeof(*o));
1706 }