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