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