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 #if FIO_PATCH > 0
  29 const char fio_version_string[] =       __fio_stringify(FIO_MAJOR) "."  \
  30                                         __fio_stringify(FIO_MINOR) "."  \
  31                                         __fio_stringify(FIO_PATCH);
  32 #else
  33 const char fio_version_string[] =       __fio_stringify(FIO_MAJOR) "."  \
  34                                         __fio_stringify(FIO_MINOR);
  35 #endif
  36
  37 #define FIO_RANDSEED            (0xb1899bedUL)
  38
  39 static char **ini_file;
  40 static int max_jobs = FIO_MAX_JOBS;
  41 static int dump_cmdline;
  42 static int def_timeout;
  43
  44 static struct thread_data def_thread;
  45 struct thread_data *threads = NULL;
  46
  47 int exitall_on_terminate = 0;
  48 int terse_output = 0;
  49 int eta_print;
  50 unsigned long long mlock_size = 0;
  51 FILE *f_out = NULL;
  52 FILE *f_err = NULL;
  53 char **job_sections = NULL;
  54 int nr_job_sections = 0;
  55 char *exec_profile = NULL;
  56 int warnings_fatal = 0;
  57 int terse_version = 3;
  58 int is_backend = 0;
  59 int nr_clients = 0;
  60 int log_syslog = 0;
  61
  62 int write_bw_log = 0;
  63 int read_only = 0;
  64
  65 static int write_lat_log;
  66
  67 static int prev_group_jobs;
  68
  69 unsigned long fio_debug = 0;
  70 unsigned int fio_debug_jobno = -1;
  71 unsigned int *fio_debug_jobp = NULL;
  72
  73 static char cmd_optstr[256];
  74 static int did_arg;
  75
  76 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  77         { .u.f  =  1.0 },
  78         { .u.f  =  5.0 },
  79         { .u.f  = 10.0 },
  80         { .u.f  = 20.0 },
  81         { .u.f  = 30.0 },
  82         { .u.f  = 40.0 },
  83         { .u.f  = 50.0 },
  84         { .u.f  = 60.0 },
  85         { .u.f  = 70.0 },
  86         { .u.f  = 80.0 },
  87         { .u.f  = 90.0 },
  88         { .u.f  = 95.0 },
  89         { .u.f  = 99.0 },
  90         { .u.f  = 99.5 },
  91         { .u.f  = 99.9 },
  92 };
  93
  94 #define FIO_CLIENT_FLAG         (1 << 16)
  95
  96 /*
  97  * Command line options. These will contain the above, plus a few
  98  * extra that only pertain to fio itself and not jobs.
  99  */
 100 static struct option l_opts[FIO_NR_OPTIONS] = {
 101         {
 102                 .name           = (char *) "output",
 103                 .has_arg        = required_argument,
 104                 .val            = 'o' | FIO_CLIENT_FLAG,
 105         },
 106         {
 107                 .name           = (char *) "timeout",
 108                 .has_arg        = required_argument,
 109                 .val            = 't' | FIO_CLIENT_FLAG,
 110         },
 111         {
 112                 .name           = (char *) "latency-log",
 113                 .has_arg        = required_argument,
 114                 .val            = 'l' | FIO_CLIENT_FLAG,
 115         },
 116         {
 117                 .name           = (char *) "bandwidth-log",
 118                 .has_arg        = required_argument,
 119                 .val            = 'b' | FIO_CLIENT_FLAG,
 120         },
 121         {
 122                 .name           = (char *) "minimal",
 123                 .has_arg        = optional_argument,
 124                 .val            = 'm' | FIO_CLIENT_FLAG,
 125         },
 126         {
 127                 .name           = (char *) "version",
 128                 .has_arg        = no_argument,
 129                 .val            = 'v' | FIO_CLIENT_FLAG,
 130         },
 131         {
 132                 .name           = (char *) "help",
 133                 .has_arg        = no_argument,
 134                 .val            = 'h' | FIO_CLIENT_FLAG,
 135         },
 136         {
 137                 .name           = (char *) "cmdhelp",
 138                 .has_arg        = optional_argument,
 139                 .val            = 'c' | FIO_CLIENT_FLAG,
 140         },
 141         {
 142                 .name              = (char *) "enghelp",
 143                 .has_arg        = optional_argument,
 144                 .val                = 'i' | FIO_CLIENT_FLAG,
 145         },
 146         {
 147                 .name           = (char *) "showcmd",
 148                 .has_arg        = no_argument,
 149                 .val            = 's' | FIO_CLIENT_FLAG,
 150         },
 151         {
 152                 .name           = (char *) "readonly",
 153                 .has_arg        = no_argument,
 154                 .val            = 'r' | FIO_CLIENT_FLAG,
 155         },
 156         {
 157                 .name           = (char *) "eta",
 158                 .has_arg        = required_argument,
 159                 .val            = 'e' | FIO_CLIENT_FLAG,
 160         },
 161         {
 162                 .name           = (char *) "debug",
 163                 .has_arg        = required_argument,
 164                 .val            = 'd' | FIO_CLIENT_FLAG,
 165         },
 166         {
 167                 .name           = (char *) "section",
 168                 .has_arg        = required_argument,
 169                 .val            = 'x' | FIO_CLIENT_FLAG,
 170         },
 171         {
 172                 .name           = (char *) "alloc-size",
 173                 .has_arg        = required_argument,
 174                 .val            = 'a' | FIO_CLIENT_FLAG,
 175         },
 176         {
 177                 .name           = (char *) "profile",
 178                 .has_arg        = required_argument,
 179                 .val            = 'p' | FIO_CLIENT_FLAG,
 180         },
 181         {
 182                 .name           = (char *) "warnings-fatal",
 183                 .has_arg        = no_argument,
 184                 .val            = 'w' | FIO_CLIENT_FLAG,
 185         },
 186         {
 187                 .name           = (char *) "max-jobs",
 188                 .has_arg        = required_argument,
 189                 .val            = 'j' | FIO_CLIENT_FLAG,
 190         },
 191         {
 192                 .name           = (char *) "terse-version",
 193                 .has_arg        = required_argument,
 194                 .val            = 'V' | FIO_CLIENT_FLAG,
 195         },
 196         {
 197                 .name           = (char *) "server",
 198                 .has_arg        = optional_argument,
 199                 .val            = 'S',
 200         },
 201         {       .name           = (char *) "daemonize",
 202                 .has_arg        = required_argument,
 203                 .val            = 'D',
 204         },
 205         {
 206                 .name           = (char *) "client",
 207                 .has_arg        = required_argument,
 208                 .val            = 'C',
 209         },
 210         {
 211                 .name           = NULL,
 212         },
 213 };
 214
 215 static void free_shm(void)
 216 {
 217         struct shmid_ds sbuf;
 218
 219         if (threads) {
 220                 void *tp = threads;
 221
 222                 threads = NULL;
 223                 file_hash_exit();
 224                 fio_debug_jobp = NULL;
 225                 shmdt(tp);
 226                 shmctl(shm_id, IPC_RMID, &sbuf);
 227         }
 228
 229         scleanup();
 230 }
 231
 232 /*
 233  * The thread area is shared between the main process and the job
 234  * threads/processes. So setup a shared memory segment that will hold
 235  * all the job info. We use the end of the region for keeping track of
 236  * open files across jobs, for file sharing.
 237  */
 238 static int setup_thread_area(void)
 239 {
 240         void *hash;
 241
 242         if (threads)
 243                 return 0;
 244
 245         /*
 246          * 1024 is too much on some machines, scale max_jobs if
 247          * we get a failure that looks like too large a shm segment
 248          */
 249         do {
 250                 size_t size = max_jobs * sizeof(struct thread_data);
 251
 252                 size += file_hash_size;
 253                 size += sizeof(unsigned int);
 254
 255                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 256                 if (shm_id != -1)
 257                         break;
 258                 if (errno != EINVAL) {
 259                         perror("shmget");
 260                         break;
 261                 }
 262
 263                 max_jobs >>= 1;
 264         } while (max_jobs);
 265
 266         if (shm_id == -1)
 267                 return 1;
 268
 269         threads = shmat(shm_id, NULL, 0);
 270         if (threads == (void *) -1) {
 271                 perror("shmat");
 272                 return 1;
 273         }
 274
 275         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 276         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 277         fio_debug_jobp = (void *) hash + file_hash_size;
 278         *fio_debug_jobp = -1;
 279         file_hash_init(hash);
 280         return 0;
 281 }
 282
 283 /*
 284  * Return a free job structure.
 285  */
 286 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 287                                        int preserve_eo)
 288 {
 289         struct thread_data *td;
 290
 291         if (global)
 292                 return &def_thread;
 293         if (setup_thread_area()) {
 294                 log_err("error: failed to setup shm segment\n");
 295                 return NULL;
 296         }
 297         if (thread_number >= max_jobs) {
 298                 log_err("error: maximum number of jobs (%d) reached.\n",
 299                                 max_jobs);
 300                 return NULL;
 301         }
 302
 303         td = &threads[thread_number++];
 304         *td = *parent;
 305
 306         td->io_ops = NULL;
 307         if (!preserve_eo)
 308                 td->eo = NULL;
 309
 310         td->o.uid = td->o.gid = -1U;
 311
 312         dup_files(td, parent);
 313         fio_options_mem_dupe(td);
 314
 315         profile_add_hooks(td);
 316
 317         td->thread_number = thread_number;
 318         return td;
 319 }
 320
 321 static void put_job(struct thread_data *td)
 322 {
 323         if (td == &def_thread)
 324                 return;
 325
 326         profile_td_exit(td);
 327
 328         if (td->error)
 329                 log_info("fio: %s\n", td->verror);
 330
 331         fio_options_free(td);
 332         if (td->io_ops)
 333                 free_ioengine(td);
 334
 335         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 336         thread_number--;
 337 }
 338
 339 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 340 {
 341         unsigned int bs = td->o.min_bs[ddir];
 342
 343         assert(ddir_rw(ddir));
 344
 345         if (td->o.rate[ddir])
 346                 td->rate_bps[ddir] = td->o.rate[ddir];
 347         else
 348                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 349
 350         if (!td->rate_bps[ddir]) {
 351                 log_err("rate lower than supported\n");
 352                 return -1;
 353         }
 354
 355         td->rate_pending_usleep[ddir] = 0;
 356         return 0;
 357 }
 358
 359 static int setup_rate(struct thread_data *td)
 360 {
 361         int ret = 0;
 362
 363         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 364                 ret = __setup_rate(td, DDIR_READ);
 365         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 366                 ret |= __setup_rate(td, DDIR_WRITE);
 367
 368         return ret;
 369 }
 370
 371 static int fixed_block_size(struct thread_options *o)
 372 {
 373         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 374                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 375                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 376 }
 377
 378 /*
 379  * Lazy way of fixing up options that depend on each other. We could also
 380  * define option callback handlers, but this is easier.
 381  */
 382 static int fixup_options(struct thread_data *td)
 383 {
 384         struct thread_options *o = &td->o;
 385         int ret = 0;
 386
 387 #ifndef FIO_HAVE_PSHARED_MUTEX
 388         if (!o->use_thread) {
 389                 log_info("fio: this platform does not support process shared"
 390                          " mutexes, forcing use of threads. Use the 'thread'"
 391                          " option to get rid of this warning.\n");
 392                 o->use_thread = 1;
 393                 ret = warnings_fatal;
 394         }
 395 #endif
 396
 397         if (o->write_iolog_file && o->read_iolog_file) {
 398                 log_err("fio: read iolog overrides write_iolog\n");
 399                 free(o->write_iolog_file);
 400                 o->write_iolog_file = NULL;
 401                 ret = warnings_fatal;
 402         }
 403
 404         /*
 405          * only really works for sequential io for now, and with 1 file
 406          */
 407         if (o->zone_size && td_random(td) && o->open_files == 1)
 408                 o->zone_size = 0;
 409
 410         /*
 411          * Reads can do overwrites, we always need to pre-create the file
 412          */
 413         if (td_read(td) || td_rw(td))
 414                 o->overwrite = 1;
 415
 416         if (!o->min_bs[DDIR_READ])
 417                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 418         if (!o->max_bs[DDIR_READ])
 419                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 420         if (!o->min_bs[DDIR_WRITE])
 421                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 422         if (!o->max_bs[DDIR_WRITE])
 423                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 424
 425         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 426
 427         /*
 428          * For random IO, allow blockalign offset other than min_bs.
 429          */
 430         if (!o->ba[DDIR_READ] || !td_random(td))
 431                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 432         if (!o->ba[DDIR_WRITE] || !td_random(td))
 433                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 434
 435         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 436             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 437             !o->norandommap) {
 438                 log_err("fio: Any use of blockalign= turns off randommap\n");
 439                 o->norandommap = 1;
 440                 ret = warnings_fatal;
 441         }
 442
 443         if (!o->file_size_high)
 444                 o->file_size_high = o->file_size_low;
 445
 446         if (o->norandommap && o->verify != VERIFY_NONE
 447             && !fixed_block_size(o))  {
 448                 log_err("fio: norandommap given for variable block sizes, "
 449                         "verify disabled\n");
 450                 o->verify = VERIFY_NONE;
 451                 ret = warnings_fatal;
 452         }
 453         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 454                 log_err("fio: bs_unaligned may not work with raw io\n");
 455
 456         /*
 457          * thinktime_spin must be less than thinktime
 458          */
 459         if (o->thinktime_spin > o->thinktime)
 460                 o->thinktime_spin = o->thinktime;
 461
 462         /*
 463          * The low water mark cannot be bigger than the iodepth
 464          */
 465         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 466                 /*
 467                  * syslet work around - if the workload is sequential,
 468                  * we want to let the queue drain all the way down to
 469                  * avoid seeking between async threads
 470                  */
 471                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 472                         o->iodepth_low = 1;
 473                 else
 474                         o->iodepth_low = o->iodepth;
 475         }
 476
 477         /*
 478          * If batch number isn't set, default to the same as iodepth
 479          */
 480         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 481                 o->iodepth_batch = o->iodepth;
 482
 483         if (o->nr_files > td->files_index)
 484                 o->nr_files = td->files_index;
 485
 486         if (o->open_files > o->nr_files || !o->open_files)
 487                 o->open_files = o->nr_files;
 488
 489         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 490             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 491                 o->rate_iops_min[1]))) {
 492                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 493                 ret = 1;
 494         }
 495         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 496             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 497             (o->rate_iops[1] < o->rate_iops_min[1])) {
 498                 log_err("fio: minimum rate exceeds rate\n");
 499                 ret = 1;
 500         }
 501
 502         if (!o->timeout && o->time_based) {
 503                 log_err("fio: time_based requires a runtime/timeout setting\n");
 504                 o->time_based = 0;
 505                 ret = warnings_fatal;
 506         }
 507
 508         if (o->fill_device && !o->size)
 509                 o->size = -1ULL;
 510
 511         if (o->verify != VERIFY_NONE) {
 512                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 513                         log_info("Multiple writers may overwrite blocks that "
 514                                 "belong to other jobs. This can cause "
 515                                 "verification failures.\n");
 516                         ret = warnings_fatal;
 517                 }
 518
 519                 o->refill_buffers = 1;
 520                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 521                     !o->verify_interval)
 522                         o->verify_interval = o->min_bs[DDIR_WRITE];
 523         }
 524
 525         if (o->pre_read) {
 526                 o->invalidate_cache = 0;
 527                 if (td->io_ops->flags & FIO_PIPEIO) {
 528                         log_info("fio: cannot pre-read files with an IO engine"
 529                                  " that isn't seekable. Pre-read disabled.\n");
 530                         ret = warnings_fatal;
 531                 }
 532         }
 533
 534 #ifndef FIO_HAVE_FDATASYNC
 535         if (o->fdatasync_blocks) {
 536                 log_info("fio: this platform does not support fdatasync()"
 537                          " falling back to using fsync().  Use the 'fsync'"
 538                          " option instead of 'fdatasync' to get rid of"
 539                          " this warning\n");
 540                 o->fsync_blocks = o->fdatasync_blocks;
 541                 o->fdatasync_blocks = 0;
 542                 ret = warnings_fatal;
 543         }
 544 #endif
 545
 546         return ret;
 547 }
 548
 549 /*
 550  * This function leaks the buffer
 551  */
 552 static char *to_kmg(unsigned int val)
 553 {
 554         char *buf = malloc(32);
 555         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 556         char *p = post;
 557
 558         do {
 559                 if (val & 1023)
 560                         break;
 561
 562                 val >>= 10;
 563                 p++;
 564         } while (*p);
 565
 566         snprintf(buf, 31, "%u%c", val, *p);
 567         return buf;
 568 }
 569
 570 /* External engines are specified by "external:name.o") */
 571 static const char *get_engine_name(const char *str)
 572 {
 573         char *p = strstr(str, ":");
 574
 575         if (!p)
 576                 return str;
 577
 578         p++;
 579         strip_blank_front(&p);
 580         strip_blank_end(p);
 581         return p;
 582 }
 583
 584 static int exists_and_not_file(const char *filename)
 585 {
 586         struct stat sb;
 587
 588         if (lstat(filename, &sb) == -1)
 589                 return 0;
 590
 591         /* \\.\ is the device namespace in Windows, where every file
 592          * is a device node */
 593         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 594                 return 0;
 595
 596         return 1;
 597 }
 598
 599 static void td_fill_rand_seeds_os(struct thread_data *td)
 600 {
 601         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 602         os_random_seed(td->rand_seeds[1], &td->verify_state);
 603         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 604
 605         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 606                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 607
 608         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 609         os_random_seed(td->rand_seeds[6], &td->trim_state);
 610
 611         if (!td_random(td))
 612                 return;
 613
 614         if (td->o.rand_repeatable)
 615                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 616
 617         os_random_seed(td->rand_seeds[4], &td->random_state);
 618 }
 619
 620 static void td_fill_rand_seeds_internal(struct thread_data *td)
 621 {
 622         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 623         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 624         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 625
 626         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 627                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 628
 629         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 630         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 631
 632         if (!td_random(td))
 633                 return;
 634
 635         if (td->o.rand_repeatable)
 636                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 637
 638         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 639 }
 640
 641 void td_fill_rand_seeds(struct thread_data *td)
 642 {
 643         if (td->o.use_os_rand)
 644                 td_fill_rand_seeds_os(td);
 645         else
 646                 td_fill_rand_seeds_internal(td);
 647
 648         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 649 }
 650
 651 /*
 652  * Initialize the various random states we need (random io, block size ranges,
 653  * read/write mix, etc).
 654  */
 655 static int init_random_state(struct thread_data *td)
 656 {
 657         int fd;
 658
 659         fd = open("/dev/urandom", O_RDONLY);
 660         if (fd == -1) {
 661                 td_verror(td, errno, "open");
 662                 return 1;
 663         }
 664
 665         if (read(fd, td->rand_seeds, sizeof(td->rand_seeds)) <
 666             (int) sizeof(td->rand_seeds)) {
 667                 td_verror(td, EIO, "read");
 668                 close(fd);
 669                 return 1;
 670         }
 671
 672         close(fd);
 673         td_fill_rand_seeds(td);
 674         return 0;
 675 }
 676
 677 /*
 678  * Initializes the ioengine configured for a job, if it has not been done so
 679  * already.
 680  */
 681 int ioengine_load(struct thread_data *td)
 682 {
 683         const char *engine;
 684
 685         /*
 686          * Engine has already been loaded.
 687          */
 688         if (td->io_ops)
 689                 return 0;
 690
 691         engine = get_engine_name(td->o.ioengine);
 692         td->io_ops = load_ioengine(td, engine);
 693         if (!td->io_ops) {
 694                 log_err("fio: failed to load engine %s\n", engine);
 695                 return 1;
 696         }
 697
 698         if (td->io_ops->option_struct_size && td->io_ops->options) {
 699                 /*
 700                  * In cases where td->eo is set, clone it for a child thread.
 701                  * This requires that the parent thread has the same ioengine,
 702                  * but that requirement must be enforced by the code which
 703                  * cloned the thread.
 704                  */
 705                 void *origeo = td->eo;
 706                 /*
 707                  * Otherwise use the default thread options.
 708                  */
 709                 if (!origeo && td != &def_thread && def_thread.eo &&
 710                     def_thread.io_ops->options == td->io_ops->options)
 711                         origeo = def_thread.eo;
 712
 713                 options_init(td->io_ops->options);
 714                 td->eo = malloc(td->io_ops->option_struct_size);
 715                 /*
 716                  * Use the default thread as an option template if this uses the
 717                  * same options structure and there are non-default options
 718                  * used.
 719                  */
 720                 if (origeo) {
 721                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 722                         options_mem_dupe(td->eo, td->io_ops->options);
 723                 } else {
 724                         memset(td->eo, 0, td->io_ops->option_struct_size);
 725                         fill_default_options(td->eo, td->io_ops->options);
 726                 }
 727                 *(struct thread_data **)td->eo = td;
 728         }
 729
 730         return 0;
 731 }
 732
 733 /*
 734  * Adds a job to the list of things todo. Sanitizes the various options
 735  * to make sure we don't have conflicts, and initializes various
 736  * members of td.
 737  */
 738 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 739 {
 740         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 741                                    "randread", "randwrite", "randrw" };
 742         unsigned int i;
 743         char fname[PATH_MAX];
 744         int numjobs, file_alloced;
 745
 746         /*
 747          * the def_thread is just for options, it's not a real job
 748          */
 749         if (td == &def_thread)
 750                 return 0;
 751
 752         /*
 753          * if we are just dumping the output command line, don't add the job
 754          */
 755         if (dump_cmdline) {
 756                 put_job(td);
 757                 return 0;
 758         }
 759
 760         if (profile_td_init(td))
 761                 goto err;
 762
 763         if (ioengine_load(td))
 764                 goto err;
 765
 766         if (td->o.use_thread)
 767                 nr_thread++;
 768         else
 769                 nr_process++;
 770
 771         if (td->o.odirect)
 772                 td->io_ops->flags |= FIO_RAWIO;
 773
 774         file_alloced = 0;
 775         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 776                 file_alloced = 1;
 777
 778                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 779                         add_file(td, jobname);
 780                 else {
 781                         for (i = 0; i < td->o.nr_files; i++) {
 782                                 sprintf(fname, "%s.%d.%d", jobname,
 783                                                         td->thread_number, i);
 784                                 add_file(td, fname);
 785                         }
 786                 }
 787         }
 788
 789         if (fixup_options(td))
 790                 goto err;
 791
 792         /*
 793          * IO engines only need this for option callbacks, and the address may
 794          * change in subprocesses.
 795          */
 796         if (td->eo)
 797                 *(struct thread_data **)td->eo = NULL;
 798
 799         if (td->io_ops->flags & FIO_DISKLESSIO) {
 800                 struct fio_file *f;
 801
 802                 for_each_file(td, f, i)
 803                         f->real_file_size = -1ULL;
 804         }
 805
 806         td->mutex = fio_mutex_init(0);
 807
 808         td->ts.clat_percentiles = td->o.clat_percentiles;
 809         if (td->o.overwrite_plist)
 810                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 811         else
 812                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 813
 814         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 815         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 816         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
 817         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 818         td->ddir_seq_nr = td->o.ddir_seq_nr;
 819
 820         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 821                 prev_group_jobs = 0;
 822                 groupid++;
 823         }
 824
 825         td->groupid = groupid;
 826         prev_group_jobs++;
 827
 828         if (init_random_state(td))
 829                 goto err;
 830
 831         if (setup_rate(td))
 832                 goto err;
 833
 834         if (td->o.write_lat_log) {
 835                 setup_log(&td->lat_log);
 836                 setup_log(&td->slat_log);
 837                 setup_log(&td->clat_log);
 838         }
 839         if (td->o.write_bw_log)
 840                 setup_log(&td->bw_log);
 841         if (td->o.write_iops_log)
 842                 setup_log(&td->iops_log);
 843
 844         if (!td->o.name)
 845                 td->o.name = strdup(jobname);
 846
 847         if (!terse_output) {
 848                 if (!job_add_num) {
 849                         if (!strcmp(td->io_ops->name, "cpuio")) {
 850                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 851                                          " cpucycle=%u\n", td->o.name,
 852                                                         td->o.cpuload,
 853                                                         td->o.cpucycle);
 854                         } else {
 855                                 char *c1, *c2, *c3, *c4;
 856
 857                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 858                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 859                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 860                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 861
 862                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 863                                          " ioengine=%s, iodepth=%u\n",
 864                                                 td->o.name, td->groupid,
 865                                                 ddir_str[td->o.td_ddir],
 866                                                 c1, c2, c3, c4,
 867                                                 td->io_ops->name,
 868                                                 td->o.iodepth);
 869
 870                                 free(c1);
 871                                 free(c2);
 872                                 free(c3);
 873                                 free(c4);
 874                         }
 875                 } else if (job_add_num == 1)
 876                         log_info("...\n");
 877         }
 878
 879         /*
 880          * recurse add identical jobs, clear numjobs and stonewall options
 881          * as they don't apply to sub-jobs
 882          */
 883         numjobs = td->o.numjobs;
 884         while (--numjobs) {
 885                 struct thread_data *td_new = get_new_job(0, td, 1);
 886
 887                 if (!td_new)
 888                         goto err;
 889
 890                 td_new->o.numjobs = 1;
 891                 td_new->o.stonewall = 0;
 892                 td_new->o.new_group = 0;
 893
 894                 if (file_alloced) {
 895                         td_new->o.filename = NULL;
 896                         td_new->files_index = 0;
 897                         td_new->files_size = 0;
 898                         td_new->files = NULL;
 899                 }
 900
 901                 job_add_num = numjobs - 1;
 902
 903                 if (add_job(td_new, jobname, job_add_num))
 904                         goto err;
 905         }
 906
 907         return 0;
 908 err:
 909         put_job(td);
 910         return -1;
 911 }
 912
 913 /*
 914  * Parse as if 'o' was a command line
 915  */
 916 void add_job_opts(const char **o)
 917 {
 918         struct thread_data *td, *td_parent;
 919         int i, in_global = 1;
 920         char jobname[32];
 921
 922         i = 0;
 923         td_parent = td = NULL;
 924         while (o[i]) {
 925                 if (!strncmp(o[i], "name", 4)) {
 926                         in_global = 0;
 927                         if (td)
 928                                 add_job(td, jobname, 0);
 929                         td = NULL;
 930                         sprintf(jobname, "%s", o[i] + 5);
 931                 }
 932                 if (in_global && !td_parent)
 933                         td_parent = get_new_job(1, &def_thread, 0);
 934                 else if (!in_global && !td) {
 935                         if (!td_parent)
 936                                 td_parent = &def_thread;
 937                         td = get_new_job(0, td_parent, 0);
 938                 }
 939                 if (in_global)
 940                         fio_options_parse(td_parent, (char **) &o[i], 1);
 941                 else
 942                         fio_options_parse(td, (char **) &o[i], 1);
 943                 i++;
 944         }
 945
 946         if (td)
 947                 add_job(td, jobname, 0);
 948 }
 949
 950 static int skip_this_section(const char *name)
 951 {
 952         int i;
 953
 954         if (!nr_job_sections)
 955                 return 0;
 956         if (!strncmp(name, "global", 6))
 957                 return 0;
 958
 959         for (i = 0; i < nr_job_sections; i++)
 960                 if (!strcmp(job_sections[i], name))
 961                         return 0;
 962
 963         return 1;
 964 }
 965
 966 static int is_empty_or_comment(char *line)
 967 {
 968         unsigned int i;
 969
 970         for (i = 0; i < strlen(line); i++) {
 971                 if (line[i] == ';')
 972                         return 1;
 973                 if (line[i] == '#')
 974                         return 1;
 975                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 976                         return 0;
 977         }
 978
 979         return 1;
 980 }
 981
 982 /*
 983  * This is our [ini] type file parser.
 984  */
 985 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
 986 {
 987         unsigned int global;
 988         struct thread_data *td;
 989         char *string, *name;
 990         FILE *f;
 991         char *p;
 992         int ret = 0, stonewall;
 993         int first_sect = 1;
 994         int skip_fgets = 0;
 995         int inside_skip = 0;
 996         char **opts;
 997         int i, alloc_opts, num_opts;
 998
 999         if (is_buf)
1000                 f = NULL;
1001         else {
1002                 if (!strcmp(file, "-"))
1003                         f = stdin;
1004                 else
1005                         f = fopen(file, "r");
1006
1007                 if (!f) {
1008                         perror("fopen job file");
1009                         return 1;
1010                 }
1011         }
1012
1013         string = malloc(4096);
1014
1015         /*
1016          * it's really 256 + small bit, 280 should suffice
1017          */
1018         name = malloc(280);
1019         memset(name, 0, 280);
1020
1021         alloc_opts = 8;
1022         opts = malloc(sizeof(char *) * alloc_opts);
1023         num_opts = 0;
1024
1025         stonewall = stonewall_flag;
1026         do {
1027                 /*
1028                  * if skip_fgets is set, we already have loaded a line we
1029                  * haven't handled.
1030                  */
1031                 if (!skip_fgets) {
1032                         if (is_buf)
1033                                 p = strsep(&file, "\n");
1034                         else
1035                                 p = fgets(string, 4096, f);
1036                         if (!p)
1037                                 break;
1038                 }
1039
1040                 skip_fgets = 0;
1041                 strip_blank_front(&p);
1042                 strip_blank_end(p);
1043
1044                 if (is_empty_or_comment(p))
1045                         continue;
1046                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1047                         if (inside_skip)
1048                                 continue;
1049                         log_err("fio: option <%s> outside of [] job section\n",
1050                                                                         p);
1051                         break;
1052                 }
1053
1054                 name[strlen(name) - 1] = '\0';
1055
1056                 if (skip_this_section(name)) {
1057                         inside_skip = 1;
1058                         continue;
1059                 } else
1060                         inside_skip = 0;
1061
1062                 global = !strncmp(name, "global", 6);
1063
1064                 if (dump_cmdline) {
1065                         if (first_sect)
1066                                 log_info("fio ");
1067                         if (!global)
1068                                 log_info("--name=%s ", name);
1069                         first_sect = 0;
1070                 }
1071
1072                 td = get_new_job(global, &def_thread, 0);
1073                 if (!td) {
1074                         ret = 1;
1075                         break;
1076                 }
1077
1078                 /*
1079                  * Seperate multiple job files by a stonewall
1080                  */
1081                 if (!global && stonewall) {
1082                         td->o.stonewall = stonewall;
1083                         stonewall = 0;
1084                 }
1085
1086                 num_opts = 0;
1087                 memset(opts, 0, alloc_opts * sizeof(char *));
1088
1089                 while (1) {
1090                         if (is_buf)
1091                                 p = strsep(&file, "\n");
1092                         else
1093                                 p = fgets(string, 4096, f);
1094                         if (!p)
1095                                 break;
1096
1097                         if (is_empty_or_comment(p))
1098                                 continue;
1099
1100                         strip_blank_front(&p);
1101
1102                         /*
1103                          * new section, break out and make sure we don't
1104                          * fgets() a new line at the top.
1105                          */
1106                         if (p[0] == '[') {
1107                                 skip_fgets = 1;
1108                                 break;
1109                         }
1110
1111                         strip_blank_end(p);
1112
1113                         if (num_opts == alloc_opts) {
1114                                 alloc_opts <<= 1;
1115                                 opts = realloc(opts,
1116                                                 alloc_opts * sizeof(char *));
1117                         }
1118
1119                         opts[num_opts] = strdup(p);
1120                         num_opts++;
1121                 }
1122
1123                 ret = fio_options_parse(td, opts, num_opts);
1124                 if (!ret) {
1125                         if (dump_cmdline)
1126                                 for (i = 0; i < num_opts; i++)
1127                                         log_info("--%s ", opts[i]);
1128
1129                         ret = add_job(td, name, 0);
1130                 } else {
1131                         log_err("fio: job %s dropped\n", name);
1132                         put_job(td);
1133                 }
1134
1135                 for (i = 0; i < num_opts; i++)
1136                         free(opts[i]);
1137                 num_opts = 0;
1138         } while (!ret);
1139
1140         if (dump_cmdline)
1141                 log_info("\n");
1142
1143         i = 0;
1144         while (i < nr_job_sections) {
1145                 free(job_sections[i]);
1146                 i++;
1147         }
1148
1149         for (i = 0; i < num_opts; i++)
1150                 free(opts[i]);
1151
1152         free(string);
1153         free(name);
1154         free(opts);
1155         if (!is_buf && f != stdin)
1156                 fclose(f);
1157         return ret;
1158 }
1159
1160 static int fill_def_thread(void)
1161 {
1162         memset(&def_thread, 0, sizeof(def_thread));
1163
1164         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1165         def_thread.o.timeout = def_timeout;
1166
1167         /*
1168          * fill default options
1169          */
1170         fio_fill_default_options(&def_thread);
1171         return 0;
1172 }
1173
1174 static void usage(const char *name)
1175 {
1176         printf("fio %s\n", fio_version_string);
1177         printf("%s [options] [job options] <job file(s)>\n", name);
1178         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1179                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1180                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1181         printf("  --output\t\tWrite output to file\n");
1182         printf("  --timeout\t\tRuntime in seconds\n");
1183         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1184         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1185         printf("  --minimal\t\tMinimal (terse) output\n");
1186         printf("  --version\t\tPrint version info and exit\n");
1187         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1188         printf("  --help\t\tPrint this page\n");
1189         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1190                 " them\n");
1191         printf("  --enghelp=engine\tPrint ioengine help, or list"
1192                 " available ioengines\n");
1193         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1194                 " cmd\n");
1195         printf("  --showcmd\t\tTurn a job file into command line options\n");
1196         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1197         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1198         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1199                 " writes\n");
1200         printf("  --section=name\tOnly run specified section in job file\n");
1201         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1202                 " (def 1024)\n");
1203         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1204         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1205         printf("  --server=args\t\tStart a backend fio server\n");
1206         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1207         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1208         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1209         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1210 }
1211
1212 #ifdef FIO_INC_DEBUG
1213 struct debug_level debug_levels[] = {
1214         { .name = "process",    .shift = FD_PROCESS, },
1215         { .name = "file",       .shift = FD_FILE, },
1216         { .name = "io",         .shift = FD_IO, },
1217         { .name = "mem",        .shift = FD_MEM, },
1218         { .name = "blktrace",   .shift = FD_BLKTRACE },
1219         { .name = "verify",     .shift = FD_VERIFY },
1220         { .name = "random",     .shift = FD_RANDOM },
1221         { .name = "parse",      .shift = FD_PARSE },
1222         { .name = "diskutil",   .shift = FD_DISKUTIL },
1223         { .name = "job",        .shift = FD_JOB },
1224         { .name = "mutex",      .shift = FD_MUTEX },
1225         { .name = "profile",    .shift = FD_PROFILE },
1226         { .name = "time",       .shift = FD_TIME },
1227         { .name = "net",        .shift = FD_NET },
1228         { .name = NULL, },
1229 };
1230
1231 static int set_debug(const char *string)
1232 {
1233         struct debug_level *dl;
1234         char *p = (char *) string;
1235         char *opt;
1236         int i;
1237
1238         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1239                 log_info("fio: dumping debug options:");
1240                 for (i = 0; debug_levels[i].name; i++) {
1241                         dl = &debug_levels[i];
1242                         log_info("%s,", dl->name);
1243                 }
1244                 log_info("all\n");
1245                 return 1;
1246         }
1247
1248         while ((opt = strsep(&p, ",")) != NULL) {
1249                 int found = 0;
1250
1251                 if (!strncmp(opt, "all", 3)) {
1252                         log_info("fio: set all debug options\n");
1253                         fio_debug = ~0UL;
1254                         continue;
1255                 }
1256
1257                 for (i = 0; debug_levels[i].name; i++) {
1258                         dl = &debug_levels[i];
1259                         found = !strncmp(opt, dl->name, strlen(dl->name));
1260                         if (!found)
1261                                 continue;
1262
1263                         if (dl->shift == FD_JOB) {
1264                                 opt = strchr(opt, ':');
1265                                 if (!opt) {
1266                                         log_err("fio: missing job number\n");
1267                                         break;
1268                                 }
1269                                 opt++;
1270                                 fio_debug_jobno = atoi(opt);
1271                                 log_info("fio: set debug jobno %d\n",
1272                                                         fio_debug_jobno);
1273                         } else {
1274                                 log_info("fio: set debug option %s\n", opt);
1275                                 fio_debug |= (1UL << dl->shift);
1276                         }
1277                         break;
1278                 }
1279
1280                 if (!found)
1281                         log_err("fio: debug mask %s not found\n", opt);
1282         }
1283         return 0;
1284 }
1285 #else
1286 static int set_debug(const char *string)
1287 {
1288         log_err("fio: debug tracing not included in build\n");
1289         return 1;
1290 }
1291 #endif
1292
1293 static void fio_options_fill_optstring(void)
1294 {
1295         char *ostr = cmd_optstr;
1296         int i, c;
1297
1298         c = i = 0;
1299         while (l_opts[i].name) {
1300                 ostr[c++] = l_opts[i].val;
1301                 if (l_opts[i].has_arg == required_argument)
1302                         ostr[c++] = ':';
1303                 else if (l_opts[i].has_arg == optional_argument) {
1304                         ostr[c++] = ':';
1305                         ostr[c++] = ':';
1306                 }
1307                 i++;
1308         }
1309         ostr[c] = '\0';
1310 }
1311
1312 static int client_flag_set(char c)
1313 {
1314         int i;
1315
1316         i = 0;
1317         while (l_opts[i].name) {
1318                 int val = l_opts[i].val;
1319
1320                 if (c == (val & 0xff))
1321                         return (val & FIO_CLIENT_FLAG);
1322
1323                 i++;
1324         }
1325
1326         return 0;
1327 }
1328
1329 void parse_cmd_client(void *client, char *opt)
1330 {
1331         fio_client_add_cmd_option(client, opt);
1332 }
1333
1334 int parse_cmd_line(int argc, char *argv[])
1335 {
1336         struct thread_data *td = NULL;
1337         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1338         char *ostr = cmd_optstr;
1339         void *pid_file = NULL;
1340         void *cur_client = NULL;
1341         int backend = 0;
1342
1343         /*
1344          * Reset optind handling, since we may call this multiple times
1345          * for the backend.
1346          */
1347         optind = 1;
1348
1349         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1350                 did_arg = 1;
1351
1352                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1353                         parse_cmd_client(cur_client, argv[optind - 1]);
1354                         c &= ~FIO_CLIENT_FLAG;
1355                 }
1356
1357                 switch (c) {
1358                 case 'a':
1359                         smalloc_pool_size = atoi(optarg);
1360                         break;
1361                 case 't':
1362                         def_timeout = atoi(optarg);
1363                         break;
1364                 case 'l':
1365                         write_lat_log = 1;
1366                         break;
1367                 case 'b':
1368                         write_bw_log = 1;
1369                         break;
1370                 case 'o':
1371                         f_out = fopen(optarg, "w+");
1372                         if (!f_out) {
1373                                 perror("fopen output");
1374                                 exit(1);
1375                         }
1376                         f_err = f_out;
1377                         break;
1378                 case 'm':
1379                         terse_output = 1;
1380                         break;
1381                 case 'h':
1382                         if (!cur_client) {
1383                                 usage(argv[0]);
1384                                 do_exit++;
1385                         }
1386                         break;
1387                 case 'c':
1388                         if (!cur_client) {
1389                                 fio_show_option_help(optarg);
1390                                 do_exit++;
1391                         }
1392                         break;
1393                 case 'i':
1394                         if (!cur_client) {
1395                                 fio_show_ioengine_help(optarg);
1396                                 do_exit++;
1397                         }
1398                         break;
1399                 case 's':
1400                         dump_cmdline = 1;
1401                         break;
1402                 case 'r':
1403                         read_only = 1;
1404                         break;
1405                 case 'v':
1406                         if (!cur_client) {
1407                                 log_info("fio %s\n", fio_version_string);
1408                                 do_exit++;
1409                         }
1410                         break;
1411                 case 'V':
1412                         terse_version = atoi(optarg);
1413                         if (!(terse_version == 2 || terse_version == 3)) {
1414                                 log_err("fio: bad terse version format\n");
1415                                 exit_val = 1;
1416                                 do_exit++;
1417                         }
1418                         break;
1419                 case 'e':
1420                         if (!strcmp("always", optarg))
1421                                 eta_print = FIO_ETA_ALWAYS;
1422                         else if (!strcmp("never", optarg))
1423                                 eta_print = FIO_ETA_NEVER;
1424                         break;
1425                 case 'd':
1426                         if (set_debug(optarg))
1427                                 do_exit++;
1428                         break;
1429                 case 'x': {
1430                         size_t new_size;
1431
1432                         if (!strcmp(optarg, "global")) {
1433                                 log_err("fio: can't use global as only "
1434                                         "section\n");
1435                                 do_exit++;
1436                                 exit_val = 1;
1437                                 break;
1438                         }
1439                         new_size = (nr_job_sections + 1) * sizeof(char *);
1440                         job_sections = realloc(job_sections, new_size);
1441                         job_sections[nr_job_sections] = strdup(optarg);
1442                         nr_job_sections++;
1443                         break;
1444                         }
1445                 case 'p':
1446                         exec_profile = strdup(optarg);
1447                         break;
1448                 case FIO_GETOPT_JOB: {
1449                         const char *opt = l_opts[lidx].name;
1450                         char *val = optarg;
1451
1452                         if (!strncmp(opt, "name", 4) && td) {
1453                                 ret = add_job(td, td->o.name ?: "fio", 0);
1454                                 if (ret)
1455                                         return 0;
1456                                 td = NULL;
1457                         }
1458                         if (!td) {
1459                                 int is_section = !strncmp(opt, "name", 4);
1460                                 int global = 0;
1461
1462                                 if (!is_section || !strncmp(val, "global", 6))
1463                                         global = 1;
1464
1465                                 if (is_section && skip_this_section(val))
1466                                         continue;
1467
1468                                 td = get_new_job(global, &def_thread, 1);
1469                                 if (!td || ioengine_load(td))
1470                                         return 0;
1471                                 fio_options_set_ioengine_opts(l_opts, td);
1472                         }
1473
1474                         ret = fio_cmd_option_parse(td, opt, val);
1475
1476                         if (!ret && !strcmp(opt, "ioengine")) {
1477                                 free_ioengine(td);
1478                                 if (ioengine_load(td))
1479                                         return 0;
1480                                 fio_options_set_ioengine_opts(l_opts, td);
1481                         }
1482                         break;
1483                 }
1484                 case FIO_GETOPT_IOENGINE: {
1485                         const char *opt = l_opts[lidx].name;
1486                         char *val = optarg;
1487                         opt = l_opts[lidx].name;
1488                         val = optarg;
1489                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1490                         break;
1491                 }
1492                 case 'w':
1493                         warnings_fatal = 1;
1494                         break;
1495                 case 'j':
1496                         max_jobs = atoi(optarg);
1497                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1498                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1499                                 do_exit++;
1500                                 exit_val = 1;
1501                         }
1502                         break;
1503                 case 'S':
1504                         if (nr_clients) {
1505                                 log_err("fio: can't be both client and server\n");
1506                                 do_exit++;
1507                                 exit_val = 1;
1508                                 break;
1509                         }
1510                         if (optarg)
1511                                 fio_server_set_arg(optarg);
1512                         is_backend = 1;
1513                         backend = 1;
1514                         break;
1515                 case 'D':
1516                         pid_file = strdup(optarg);
1517                         break;
1518                 case 'C':
1519                         if (is_backend) {
1520                                 log_err("fio: can't be both client and server\n");
1521                                 do_exit++;
1522                                 exit_val = 1;
1523                                 break;
1524                         }
1525                         if (fio_client_add(optarg, &cur_client)) {
1526                                 log_err("fio: failed adding client %s\n", optarg);
1527                                 do_exit++;
1528                                 exit_val = 1;
1529                                 break;
1530                         }
1531                         break;
1532                 default:
1533                         do_exit++;
1534                         exit_val = 1;
1535                         break;
1536                 }
1537                 if (do_exit)
1538                         break;
1539         }
1540
1541         if (do_exit) {
1542                 if (exit_val && !(is_backend || nr_clients))
1543                         exit(exit_val);
1544         }
1545
1546         if (nr_clients && fio_clients_connect()) {
1547                 do_exit++;
1548                 exit_val = 1;
1549                 return -1;
1550         }
1551
1552         if (is_backend && backend)
1553                 return fio_start_server(pid_file);
1554
1555         if (td) {
1556                 if (!ret)
1557                         ret = add_job(td, td->o.name ?: "fio", 0);
1558         }
1559
1560         while (!ret && optind < argc) {
1561                 ini_idx++;
1562                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1563                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1564                 optind++;
1565         }
1566
1567         return ini_idx;
1568 }
1569
1570 int parse_options(int argc, char *argv[])
1571 {
1572         int job_files, i;
1573
1574         f_out = stdout;
1575         f_err = stderr;
1576
1577         fio_options_fill_optstring();
1578         fio_options_dup_and_init(l_opts);
1579
1580         atexit(free_shm);
1581
1582         if (fill_def_thread())
1583                 return 1;
1584
1585         job_files = parse_cmd_line(argc, argv);
1586
1587         if (job_files > 0) {
1588                 for (i = 0; i < job_files; i++) {
1589                         if (fill_def_thread())
1590                                 return 1;
1591                         if (nr_clients) {
1592                                 if (fio_clients_send_ini(ini_file[i]))
1593                                         return 1;
1594                                 free(ini_file[i]);
1595                         } else if (!is_backend) {
1596                                 if (parse_jobs_ini(ini_file[i], 0, i))
1597                                         return 1;
1598                                 free(ini_file[i]);
1599                         }
1600                 }
1601         }
1602
1603         free(ini_file);
1604         fio_options_free(&def_thread);
1605
1606         if (!thread_number) {
1607                 if (dump_cmdline)
1608                         return 0;
1609                 if (exec_profile)
1610                         return 0;
1611                 if (is_backend || nr_clients)
1612                         return 0;
1613                 if (did_arg)
1614                         return 0;
1615
1616                 log_err("No jobs(s) defined\n\n");
1617
1618                 if (!did_arg) {
1619                         usage(argv[0]);
1620                         return 1;
1621                 }
1622
1623                 return 0;
1624         }
1625
1626         if (def_thread.o.gtod_offload) {
1627                 fio_gtod_init();
1628                 fio_gtod_offload = 1;
1629                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1630         }
1631
1632         if (!terse_output)
1633                 log_info("fio %s\n", fio_version_string);
1634
1635         return 0;
1636 }