init.c

   1 /*
   2  * This file contains job initialization and setup functions.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <fcntl.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <sys/ipc.h>
  12 #include <sys/shm.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15
  16 #include "fio.h"
  17 #include "parse.h"
  18 #include "smalloc.h"
  19 #include "filehash.h"
  20 #include "verify.h"
  21 #include "profile.h"
  22 #include "server.h"
  23
  24 #include "lib/getopt.h"
  25
  26 #include "fio_version.h"
  27
  28 #if FIO_PATCH > 0
  29 const char fio_version_string[] =       __fio_stringify(FIO_MAJOR) "."  \
  30                                         __fio_stringify(FIO_MINOR) "."  \
  31                                         __fio_stringify(FIO_PATCH);
  32 #else
  33 const char fio_version_string[] =       __fio_stringify(FIO_MAJOR) "."  \
  34                                         __fio_stringify(FIO_MINOR);
  35 #endif
  36
  37 #define FIO_RANDSEED            (0xb1899bedUL)
  38
  39 static char **ini_file;
  40 static int max_jobs = FIO_MAX_JOBS;
  41 static int dump_cmdline;
  42 static int def_timeout;
  43
  44 static struct thread_data def_thread;
  45 struct thread_data *threads = NULL;
  46
  47 int exitall_on_terminate = 0;
  48 int terse_output = 0;
  49 int eta_print;
  50 unsigned long long mlock_size = 0;
  51 FILE *f_out = NULL;
  52 FILE *f_err = NULL;
  53 char **job_sections = NULL;
  54 int nr_job_sections = 0;
  55 char *exec_profile = NULL;
  56 int warnings_fatal = 0;
  57 int terse_version = 3;
  58 int is_backend = 0;
  59 int nr_clients = 0;
  60 int log_syslog = 0;
  61
  62 int write_bw_log = 0;
  63 int read_only = 0;
  64
  65 static int write_lat_log;
  66
  67 static int prev_group_jobs;
  68
  69 unsigned long fio_debug = 0;
  70 unsigned int fio_debug_jobno = -1;
  71 unsigned int *fio_debug_jobp = NULL;
  72
  73 static char cmd_optstr[256];
  74 static int did_arg;
  75
  76 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  77         { .u.f  =  1.0 },
  78         { .u.f  =  5.0 },
  79         { .u.f  = 10.0 },
  80         { .u.f  = 20.0 },
  81         { .u.f  = 30.0 },
  82         { .u.f  = 40.0 },
  83         { .u.f  = 50.0 },
  84         { .u.f  = 60.0 },
  85         { .u.f  = 70.0 },
  86         { .u.f  = 80.0 },
  87         { .u.f  = 90.0 },
  88         { .u.f  = 95.0 },
  89         { .u.f  = 99.0 },
  90         { .u.f  = 99.5 },
  91         { .u.f  = 99.9 },
  92 };
  93
  94 #define FIO_CLIENT_FLAG         (1 << 16)
  95
  96 /*
  97  * Command line options. These will contain the above, plus a few
  98  * extra that only pertain to fio itself and not jobs.
  99  */
 100 static struct option l_opts[FIO_NR_OPTIONS] = {
 101         {
 102                 .name           = (char *) "output",
 103                 .has_arg        = required_argument,
 104                 .val            = 'o' | FIO_CLIENT_FLAG,
 105         },
 106         {
 107                 .name           = (char *) "timeout",
 108                 .has_arg        = required_argument,
 109                 .val            = 't' | FIO_CLIENT_FLAG,
 110         },
 111         {
 112                 .name           = (char *) "latency-log",
 113                 .has_arg        = required_argument,
 114                 .val            = 'l' | FIO_CLIENT_FLAG,
 115         },
 116         {
 117                 .name           = (char *) "bandwidth-log",
 118                 .has_arg        = required_argument,
 119                 .val            = 'b' | FIO_CLIENT_FLAG,
 120         },
 121         {
 122                 .name           = (char *) "minimal",
 123                 .has_arg        = optional_argument,
 124                 .val            = 'm' | FIO_CLIENT_FLAG,
 125         },
 126         {
 127                 .name           = (char *) "version",
 128                 .has_arg        = no_argument,
 129                 .val            = 'v' | FIO_CLIENT_FLAG,
 130         },
 131         {
 132                 .name           = (char *) "help",
 133                 .has_arg        = no_argument,
 134                 .val            = 'h' | FIO_CLIENT_FLAG,
 135         },
 136         {
 137                 .name           = (char *) "cmdhelp",
 138                 .has_arg        = optional_argument,
 139                 .val            = 'c' | FIO_CLIENT_FLAG,
 140         },
 141         {
 142                 .name              = (char *) "enghelp",
 143                 .has_arg        = optional_argument,
 144                 .val                = 'i' | FIO_CLIENT_FLAG,
 145         },
 146         {
 147                 .name           = (char *) "showcmd",
 148                 .has_arg        = no_argument,
 149                 .val            = 's' | FIO_CLIENT_FLAG,
 150         },
 151         {
 152                 .name           = (char *) "readonly",
 153                 .has_arg        = no_argument,
 154                 .val            = 'r' | FIO_CLIENT_FLAG,
 155         },
 156         {
 157                 .name           = (char *) "eta",
 158                 .has_arg        = required_argument,
 159                 .val            = 'e' | FIO_CLIENT_FLAG,
 160         },
 161         {
 162                 .name           = (char *) "debug",
 163                 .has_arg        = required_argument,
 164                 .val            = 'd' | FIO_CLIENT_FLAG,
 165         },
 166         {
 167                 .name           = (char *) "section",
 168                 .has_arg        = required_argument,
 169                 .val            = 'x' | FIO_CLIENT_FLAG,
 170         },
 171         {
 172                 .name           = (char *) "alloc-size",
 173                 .has_arg        = required_argument,
 174                 .val            = 'a' | FIO_CLIENT_FLAG,
 175         },
 176         {
 177                 .name           = (char *) "profile",
 178                 .has_arg        = required_argument,
 179                 .val            = 'p' | FIO_CLIENT_FLAG,
 180         },
 181         {
 182                 .name           = (char *) "warnings-fatal",
 183                 .has_arg        = no_argument,
 184                 .val            = 'w' | FIO_CLIENT_FLAG,
 185         },
 186         {
 187                 .name           = (char *) "max-jobs",
 188                 .has_arg        = required_argument,
 189                 .val            = 'j' | FIO_CLIENT_FLAG,
 190         },
 191         {
 192                 .name           = (char *) "terse-version",
 193                 .has_arg        = required_argument,
 194                 .val            = 'V' | FIO_CLIENT_FLAG,
 195         },
 196         {
 197                 .name           = (char *) "server",
 198                 .has_arg        = optional_argument,
 199                 .val            = 'S',
 200         },
 201         {       .name           = (char *) "daemonize",
 202                 .has_arg        = required_argument,
 203                 .val            = 'D',
 204         },
 205         {
 206                 .name           = (char *) "client",
 207                 .has_arg        = required_argument,
 208                 .val            = 'C',
 209         },
 210         {
 211                 .name           = NULL,
 212         },
 213 };
 214
 215 static void free_shm(void)
 216 {
 217         struct shmid_ds sbuf;
 218
 219         if (threads) {
 220                 void *tp = threads;
 221
 222                 threads = NULL;
 223                 file_hash_exit();
 224                 fio_debug_jobp = NULL;
 225                 shmdt(tp);
 226                 shmctl(shm_id, IPC_RMID, &sbuf);
 227         }
 228
 229         scleanup();
 230 }
 231
 232 /*
 233  * The thread area is shared between the main process and the job
 234  * threads/processes. So setup a shared memory segment that will hold
 235  * all the job info. We use the end of the region for keeping track of
 236  * open files across jobs, for file sharing.
 237  */
 238 static int setup_thread_area(void)
 239 {
 240         void *hash;
 241
 242         if (threads)
 243                 return 0;
 244
 245         /*
 246          * 1024 is too much on some machines, scale max_jobs if
 247          * we get a failure that looks like too large a shm segment
 248          */
 249         do {
 250                 size_t size = max_jobs * sizeof(struct thread_data);
 251
 252                 size += file_hash_size;
 253                 size += sizeof(unsigned int);
 254
 255                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 256                 if (shm_id != -1)
 257                         break;
 258                 if (errno != EINVAL && errno != ENOMEM) {
 259                         perror("shmget");
 260                         break;
 261                 }
 262
 263                 max_jobs >>= 1;
 264         } while (max_jobs);
 265
 266         if (shm_id == -1)
 267                 return 1;
 268
 269         threads = shmat(shm_id, NULL, 0);
 270         if (threads == (void *) -1) {
 271                 perror("shmat");
 272                 return 1;
 273         }
 274
 275         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 276         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 277         fio_debug_jobp = (void *) hash + file_hash_size;
 278         *fio_debug_jobp = -1;
 279         file_hash_init(hash);
 280         return 0;
 281 }
 282
 283 /*
 284  * Return a free job structure.
 285  */
 286 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 287                                        int preserve_eo)
 288 {
 289         struct thread_data *td;
 290
 291         if (global)
 292                 return &def_thread;
 293         if (setup_thread_area()) {
 294                 log_err("error: failed to setup shm segment\n");
 295                 return NULL;
 296         }
 297         if (thread_number >= max_jobs) {
 298                 log_err("error: maximum number of jobs (%d) reached.\n",
 299                                 max_jobs);
 300                 return NULL;
 301         }
 302
 303         td = &threads[thread_number++];
 304         *td = *parent;
 305
 306         td->io_ops = NULL;
 307         if (!preserve_eo)
 308                 td->eo = NULL;
 309
 310         td->o.uid = td->o.gid = -1U;
 311
 312         dup_files(td, parent);
 313         fio_options_mem_dupe(td);
 314
 315         profile_add_hooks(td);
 316
 317         td->thread_number = thread_number;
 318         return td;
 319 }
 320
 321 static void put_job(struct thread_data *td)
 322 {
 323         if (td == &def_thread)
 324                 return;
 325
 326         profile_td_exit(td);
 327
 328         if (td->error)
 329                 log_info("fio: %s\n", td->verror);
 330
 331         fio_options_free(td);
 332         if (td->io_ops)
 333                 free_ioengine(td);
 334
 335         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 336         thread_number--;
 337 }
 338
 339 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 340 {
 341         unsigned int bs = td->o.min_bs[ddir];
 342
 343         assert(ddir_rw(ddir));
 344
 345         if (td->o.rate[ddir])
 346                 td->rate_bps[ddir] = td->o.rate[ddir];
 347         else
 348                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 349
 350         if (!td->rate_bps[ddir]) {
 351                 log_err("rate lower than supported\n");
 352                 return -1;
 353         }
 354
 355         td->rate_pending_usleep[ddir] = 0;
 356         return 0;
 357 }
 358
 359 static int setup_rate(struct thread_data *td)
 360 {
 361         int ret = 0;
 362
 363         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 364                 ret = __setup_rate(td, DDIR_READ);
 365         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 366                 ret |= __setup_rate(td, DDIR_WRITE);
 367
 368         return ret;
 369 }
 370
 371 static int fixed_block_size(struct thread_options *o)
 372 {
 373         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 374                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 375                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 376 }
 377
 378 /*
 379  * Lazy way of fixing up options that depend on each other. We could also
 380  * define option callback handlers, but this is easier.
 381  */
 382 static int fixup_options(struct thread_data *td)
 383 {
 384         struct thread_options *o = &td->o;
 385         int ret = 0;
 386
 387 #ifndef FIO_HAVE_PSHARED_MUTEX
 388         if (!o->use_thread) {
 389                 log_info("fio: this platform does not support process shared"
 390                          " mutexes, forcing use of threads. Use the 'thread'"
 391                          " option to get rid of this warning.\n");
 392                 o->use_thread = 1;
 393                 ret = warnings_fatal;
 394         }
 395 #endif
 396
 397         if (o->write_iolog_file && o->read_iolog_file) {
 398                 log_err("fio: read iolog overrides write_iolog\n");
 399                 free(o->write_iolog_file);
 400                 o->write_iolog_file = NULL;
 401                 ret = warnings_fatal;
 402         }
 403
 404         /*
 405          * only really works 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         return ret;
 554 }
 555
 556 /*
 557  * This function leaks the buffer
 558  */
 559 static char *to_kmg(unsigned int val)
 560 {
 561         char *buf = malloc(32);
 562         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 563         char *p = post;
 564
 565         do {
 566                 if (val & 1023)
 567                         break;
 568
 569                 val >>= 10;
 570                 p++;
 571         } while (*p);
 572
 573         snprintf(buf, 31, "%u%c", val, *p);
 574         return buf;
 575 }
 576
 577 /* External engines are specified by "external:name.o") */
 578 static const char *get_engine_name(const char *str)
 579 {
 580         char *p = strstr(str, ":");
 581
 582         if (!p)
 583                 return str;
 584
 585         p++;
 586         strip_blank_front(&p);
 587         strip_blank_end(p);
 588         return p;
 589 }
 590
 591 static int exists_and_not_file(const char *filename)
 592 {
 593         struct stat sb;
 594
 595         if (lstat(filename, &sb) == -1)
 596                 return 0;
 597
 598         /* \\.\ is the device namespace in Windows, where every file
 599          * is a device node */
 600         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 601                 return 0;
 602
 603         return 1;
 604 }
 605
 606 static void td_fill_rand_seeds_os(struct thread_data *td)
 607 {
 608         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 609         os_random_seed(td->rand_seeds[1], &td->verify_state);
 610         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 611
 612         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 613                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 614
 615         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 616         os_random_seed(td->rand_seeds[6], &td->trim_state);
 617
 618         if (!td_random(td))
 619                 return;
 620
 621         if (td->o.rand_repeatable)
 622                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 623
 624         os_random_seed(td->rand_seeds[4], &td->random_state);
 625 }
 626
 627 static void td_fill_rand_seeds_internal(struct thread_data *td)
 628 {
 629         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 630         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 631         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 632
 633         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 634                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 635
 636         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 637         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 638
 639         if (!td_random(td))
 640                 return;
 641
 642         if (td->o.rand_repeatable)
 643                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 644
 645         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 646 }
 647
 648 void td_fill_rand_seeds(struct thread_data *td)
 649 {
 650         if (td->o.use_os_rand)
 651                 td_fill_rand_seeds_os(td);
 652         else
 653                 td_fill_rand_seeds_internal(td);
 654
 655         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 656 }
 657
 658 /*
 659  * Initialize the various random states we need (random io, block size ranges,
 660  * read/write mix, etc).
 661  */
 662 static int init_random_state(struct thread_data *td)
 663 {
 664         int fd;
 665
 666         fd = open("/dev/urandom", O_RDONLY);
 667         if (fd == -1) {
 668                 td_verror(td, errno, "open");
 669                 return 1;
 670         }
 671
 672         if (read(fd, td->rand_seeds, sizeof(td->rand_seeds)) <
 673             (int) sizeof(td->rand_seeds)) {
 674                 td_verror(td, EIO, "read");
 675                 close(fd);
 676                 return 1;
 677         }
 678
 679         close(fd);
 680         td_fill_rand_seeds(td);
 681         return 0;
 682 }
 683
 684 /*
 685  * Initializes the ioengine configured for a job, if it has not been done so
 686  * already.
 687  */
 688 int ioengine_load(struct thread_data *td)
 689 {
 690         const char *engine;
 691
 692         /*
 693          * Engine has already been loaded.
 694          */
 695         if (td->io_ops)
 696                 return 0;
 697
 698         engine = get_engine_name(td->o.ioengine);
 699         td->io_ops = load_ioengine(td, engine);
 700         if (!td->io_ops) {
 701                 log_err("fio: failed to load engine %s\n", engine);
 702                 return 1;
 703         }
 704
 705         if (td->io_ops->option_struct_size && td->io_ops->options) {
 706                 /*
 707                  * In cases where td->eo is set, clone it for a child thread.
 708                  * This requires that the parent thread has the same ioengine,
 709                  * but that requirement must be enforced by the code which
 710                  * cloned the thread.
 711                  */
 712                 void *origeo = td->eo;
 713                 /*
 714                  * Otherwise use the default thread options.
 715                  */
 716                 if (!origeo && td != &def_thread && def_thread.eo &&
 717                     def_thread.io_ops->options == td->io_ops->options)
 718                         origeo = def_thread.eo;
 719
 720                 options_init(td->io_ops->options);
 721                 td->eo = malloc(td->io_ops->option_struct_size);
 722                 /*
 723                  * Use the default thread as an option template if this uses the
 724                  * same options structure and there are non-default options
 725                  * used.
 726                  */
 727                 if (origeo) {
 728                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 729                         options_mem_dupe(td->eo, td->io_ops->options);
 730                 } else {
 731                         memset(td->eo, 0, td->io_ops->option_struct_size);
 732                         fill_default_options(td->eo, td->io_ops->options);
 733                 }
 734                 *(struct thread_data **)td->eo = td;
 735         }
 736
 737         return 0;
 738 }
 739
 740 /*
 741  * Adds a job to the list of things todo. Sanitizes the various options
 742  * to make sure we don't have conflicts, and initializes various
 743  * members of td.
 744  */
 745 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 746 {
 747         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 748                                    "randread", "randwrite", "randrw" };
 749         unsigned int i;
 750         char fname[PATH_MAX];
 751         int numjobs, file_alloced;
 752
 753         /*
 754          * the def_thread is just for options, it's not a real job
 755          */
 756         if (td == &def_thread)
 757                 return 0;
 758
 759         /*
 760          * if we are just dumping the output command line, don't add the job
 761          */
 762         if (dump_cmdline) {
 763                 put_job(td);
 764                 return 0;
 765         }
 766
 767         if (profile_td_init(td))
 768                 goto err;
 769
 770         if (ioengine_load(td))
 771                 goto err;
 772
 773         if (td->o.use_thread)
 774                 nr_thread++;
 775         else
 776                 nr_process++;
 777
 778         if (td->o.odirect)
 779                 td->io_ops->flags |= FIO_RAWIO;
 780
 781         file_alloced = 0;
 782         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 783                 file_alloced = 1;
 784
 785                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 786                         add_file(td, jobname);
 787                 else {
 788                         for (i = 0; i < td->o.nr_files; i++) {
 789                                 sprintf(fname, "%s.%d.%d", jobname,
 790                                                         td->thread_number, i);
 791                                 add_file(td, fname);
 792                         }
 793                 }
 794         }
 795
 796         if (fixup_options(td))
 797                 goto err;
 798
 799         /*
 800          * IO engines only need this for option callbacks, and the address may
 801          * change in subprocesses.
 802          */
 803         if (td->eo)
 804                 *(struct thread_data **)td->eo = NULL;
 805
 806         if (td->io_ops->flags & FIO_DISKLESSIO) {
 807                 struct fio_file *f;
 808
 809                 for_each_file(td, f, i)
 810                         f->real_file_size = -1ULL;
 811         }
 812
 813         td->mutex = fio_mutex_init(0);
 814
 815         td->ts.clat_percentiles = td->o.clat_percentiles;
 816         if (td->o.overwrite_plist)
 817                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 818         else
 819                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 820
 821         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 822         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 823         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
 824         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 825         td->ddir_seq_nr = td->o.ddir_seq_nr;
 826
 827         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 828                 prev_group_jobs = 0;
 829                 groupid++;
 830         }
 831
 832         td->groupid = groupid;
 833         prev_group_jobs++;
 834
 835         if (init_random_state(td))
 836                 goto err;
 837
 838         if (setup_rate(td))
 839                 goto err;
 840
 841         if (td->o.write_lat_log) {
 842                 setup_log(&td->lat_log, td->o.log_avg_msec);
 843                 setup_log(&td->slat_log, td->o.log_avg_msec);
 844                 setup_log(&td->clat_log, td->o.log_avg_msec);
 845         }
 846         if (td->o.write_bw_log)
 847                 setup_log(&td->bw_log, td->o.log_avg_msec);
 848         if (td->o.write_iops_log)
 849                 setup_log(&td->iops_log, td->o.log_avg_msec);
 850
 851         if (!td->o.name)
 852                 td->o.name = strdup(jobname);
 853
 854         if (!terse_output) {
 855                 if (!job_add_num) {
 856                         if (!strcmp(td->io_ops->name, "cpuio")) {
 857                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 858                                          " cpucycle=%u\n", td->o.name,
 859                                                         td->o.cpuload,
 860                                                         td->o.cpucycle);
 861                         } else {
 862                                 char *c1, *c2, *c3, *c4;
 863
 864                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 865                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 866                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 867                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 868
 869                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 870                                          " ioengine=%s, iodepth=%u\n",
 871                                                 td->o.name, td->groupid,
 872                                                 ddir_str[td->o.td_ddir],
 873                                                 c1, c2, c3, c4,
 874                                                 td->io_ops->name,
 875                                                 td->o.iodepth);
 876
 877                                 free(c1);
 878                                 free(c2);
 879                                 free(c3);
 880                                 free(c4);
 881                         }
 882                 } else if (job_add_num == 1)
 883                         log_info("...\n");
 884         }
 885
 886         /*
 887          * recurse add identical jobs, clear numjobs and stonewall options
 888          * as they don't apply to sub-jobs
 889          */
 890         numjobs = td->o.numjobs;
 891         while (--numjobs) {
 892                 struct thread_data *td_new = get_new_job(0, td, 1);
 893
 894                 if (!td_new)
 895                         goto err;
 896
 897                 td_new->o.numjobs = 1;
 898                 td_new->o.stonewall = 0;
 899                 td_new->o.new_group = 0;
 900
 901                 if (file_alloced) {
 902                         td_new->o.filename = NULL;
 903                         td_new->files_index = 0;
 904                         td_new->files_size = 0;
 905                         td_new->files = NULL;
 906                 }
 907
 908                 job_add_num = numjobs - 1;
 909
 910                 if (add_job(td_new, jobname, job_add_num))
 911                         goto err;
 912         }
 913
 914         return 0;
 915 err:
 916         put_job(td);
 917         return -1;
 918 }
 919
 920 /*
 921  * Parse as if 'o' was a command line
 922  */
 923 void add_job_opts(const char **o)
 924 {
 925         struct thread_data *td, *td_parent;
 926         int i, in_global = 1;
 927         char jobname[32];
 928
 929         i = 0;
 930         td_parent = td = NULL;
 931         while (o[i]) {
 932                 if (!strncmp(o[i], "name", 4)) {
 933                         in_global = 0;
 934                         if (td)
 935                                 add_job(td, jobname, 0);
 936                         td = NULL;
 937                         sprintf(jobname, "%s", o[i] + 5);
 938                 }
 939                 if (in_global && !td_parent)
 940                         td_parent = get_new_job(1, &def_thread, 0);
 941                 else if (!in_global && !td) {
 942                         if (!td_parent)
 943                                 td_parent = &def_thread;
 944                         td = get_new_job(0, td_parent, 0);
 945                 }
 946                 if (in_global)
 947                         fio_options_parse(td_parent, (char **) &o[i], 1);
 948                 else
 949                         fio_options_parse(td, (char **) &o[i], 1);
 950                 i++;
 951         }
 952
 953         if (td)
 954                 add_job(td, jobname, 0);
 955 }
 956
 957 static int skip_this_section(const char *name)
 958 {
 959         int i;
 960
 961         if (!nr_job_sections)
 962                 return 0;
 963         if (!strncmp(name, "global", 6))
 964                 return 0;
 965
 966         for (i = 0; i < nr_job_sections; i++)
 967                 if (!strcmp(job_sections[i], name))
 968                         return 0;
 969
 970         return 1;
 971 }
 972
 973 static int is_empty_or_comment(char *line)
 974 {
 975         unsigned int i;
 976
 977         for (i = 0; i < strlen(line); i++) {
 978                 if (line[i] == ';')
 979                         return 1;
 980                 if (line[i] == '#')
 981                         return 1;
 982                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 983                         return 0;
 984         }
 985
 986         return 1;
 987 }
 988
 989 /*
 990  * This is our [ini] type file parser.
 991  */
 992 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
 993 {
 994         unsigned int global;
 995         struct thread_data *td;
 996         char *string, *name;
 997         FILE *f;
 998         char *p;
 999         int ret = 0, stonewall;
1000         int first_sect = 1;
1001         int skip_fgets = 0;
1002         int inside_skip = 0;
1003         char **opts;
1004         int i, alloc_opts, num_opts;
1005
1006         if (is_buf)
1007                 f = NULL;
1008         else {
1009                 if (!strcmp(file, "-"))
1010                         f = stdin;
1011                 else
1012                         f = fopen(file, "r");
1013
1014                 if (!f) {
1015                         perror("fopen job file");
1016                         return 1;
1017                 }
1018         }
1019
1020         string = malloc(4096);
1021
1022         /*
1023          * it's really 256 + small bit, 280 should suffice
1024          */
1025         name = malloc(280);
1026         memset(name, 0, 280);
1027
1028         alloc_opts = 8;
1029         opts = malloc(sizeof(char *) * alloc_opts);
1030         num_opts = 0;
1031
1032         stonewall = stonewall_flag;
1033         do {
1034                 /*
1035                  * if skip_fgets is set, we already have loaded a line we
1036                  * haven't handled.
1037                  */
1038                 if (!skip_fgets) {
1039                         if (is_buf)
1040                                 p = strsep(&file, "\n");
1041                         else
1042                                 p = fgets(string, 4096, f);
1043                         if (!p)
1044                                 break;
1045                 }
1046
1047                 skip_fgets = 0;
1048                 strip_blank_front(&p);
1049                 strip_blank_end(p);
1050
1051                 if (is_empty_or_comment(p))
1052                         continue;
1053                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1054                         if (inside_skip)
1055                                 continue;
1056                         log_err("fio: option <%s> outside of [] job section\n",
1057                                                                         p);
1058                         break;
1059                 }
1060
1061                 name[strlen(name) - 1] = '\0';
1062
1063                 if (skip_this_section(name)) {
1064                         inside_skip = 1;
1065                         continue;
1066                 } else
1067                         inside_skip = 0;
1068
1069                 global = !strncmp(name, "global", 6);
1070
1071                 if (dump_cmdline) {
1072                         if (first_sect)
1073                                 log_info("fio ");
1074                         if (!global)
1075                                 log_info("--name=%s ", name);
1076                         first_sect = 0;
1077                 }
1078
1079                 td = get_new_job(global, &def_thread, 0);
1080                 if (!td) {
1081                         ret = 1;
1082                         break;
1083                 }
1084
1085                 /*
1086                  * Seperate multiple job files by a stonewall
1087                  */
1088                 if (!global && stonewall) {
1089                         td->o.stonewall = stonewall;
1090                         stonewall = 0;
1091                 }
1092
1093                 num_opts = 0;
1094                 memset(opts, 0, alloc_opts * sizeof(char *));
1095
1096                 while (1) {
1097                         if (is_buf)
1098                                 p = strsep(&file, "\n");
1099                         else
1100                                 p = fgets(string, 4096, f);
1101                         if (!p)
1102                                 break;
1103
1104                         if (is_empty_or_comment(p))
1105                                 continue;
1106
1107                         strip_blank_front(&p);
1108
1109                         /*
1110                          * new section, break out and make sure we don't
1111                          * fgets() a new line at the top.
1112                          */
1113                         if (p[0] == '[') {
1114                                 skip_fgets = 1;
1115                                 break;
1116                         }
1117
1118                         strip_blank_end(p);
1119
1120                         if (num_opts == alloc_opts) {
1121                                 alloc_opts <<= 1;
1122                                 opts = realloc(opts,
1123                                                 alloc_opts * sizeof(char *));
1124                         }
1125
1126                         opts[num_opts] = strdup(p);
1127                         num_opts++;
1128                 }
1129
1130                 ret = fio_options_parse(td, opts, num_opts);
1131                 if (!ret) {
1132                         if (dump_cmdline)
1133                                 for (i = 0; i < num_opts; i++)
1134                                         log_info("--%s ", opts[i]);
1135
1136                         ret = add_job(td, name, 0);
1137                 } else {
1138                         log_err("fio: job %s dropped\n", name);
1139                         put_job(td);
1140                 }
1141
1142                 for (i = 0; i < num_opts; i++)
1143                         free(opts[i]);
1144                 num_opts = 0;
1145         } while (!ret);
1146
1147         if (dump_cmdline)
1148                 log_info("\n");
1149
1150         i = 0;
1151         while (i < nr_job_sections) {
1152                 free(job_sections[i]);
1153                 i++;
1154         }
1155
1156         for (i = 0; i < num_opts; i++)
1157                 free(opts[i]);
1158
1159         free(string);
1160         free(name);
1161         free(opts);
1162         if (!is_buf && f != stdin)
1163                 fclose(f);
1164         return ret;
1165 }
1166
1167 static int fill_def_thread(void)
1168 {
1169         memset(&def_thread, 0, sizeof(def_thread));
1170
1171         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1172         def_thread.o.timeout = def_timeout;
1173
1174         /*
1175          * fill default options
1176          */
1177         fio_fill_default_options(&def_thread);
1178         return 0;
1179 }
1180
1181 static void usage(const char *name)
1182 {
1183         printf("fio %s\n", fio_version_string);
1184         printf("%s [options] [job options] <job file(s)>\n", name);
1185         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1186                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1187                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1188         printf("  --output\t\tWrite output to file\n");
1189         printf("  --timeout\t\tRuntime in seconds\n");
1190         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1191         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1192         printf("  --minimal\t\tMinimal (terse) output\n");
1193         printf("  --version\t\tPrint version info and exit\n");
1194         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1195         printf("  --help\t\tPrint this page\n");
1196         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1197                 " them\n");
1198         printf("  --enghelp=engine\tPrint ioengine help, or list"
1199                 " available ioengines\n");
1200         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1201                 " cmd\n");
1202         printf("  --showcmd\t\tTurn a job file into command line options\n");
1203         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1204         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1205         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1206                 " writes\n");
1207         printf("  --section=name\tOnly run specified section in job file\n");
1208         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1209                 " (def 1024)\n");
1210         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1211         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1212         printf("  --server=args\t\tStart a backend fio server\n");
1213         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1214         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1215         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1216         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1217 }
1218
1219 #ifdef FIO_INC_DEBUG
1220 struct debug_level debug_levels[] = {
1221         { .name = "process",    .shift = FD_PROCESS, },
1222         { .name = "file",       .shift = FD_FILE, },
1223         { .name = "io",         .shift = FD_IO, },
1224         { .name = "mem",        .shift = FD_MEM, },
1225         { .name = "blktrace",   .shift = FD_BLKTRACE },
1226         { .name = "verify",     .shift = FD_VERIFY },
1227         { .name = "random",     .shift = FD_RANDOM },
1228         { .name = "parse",      .shift = FD_PARSE },
1229         { .name = "diskutil",   .shift = FD_DISKUTIL },
1230         { .name = "job",        .shift = FD_JOB },
1231         { .name = "mutex",      .shift = FD_MUTEX },
1232         { .name = "profile",    .shift = FD_PROFILE },
1233         { .name = "time",       .shift = FD_TIME },
1234         { .name = "net",        .shift = FD_NET },
1235         { .name = NULL, },
1236 };
1237
1238 static int set_debug(const char *string)
1239 {
1240         struct debug_level *dl;
1241         char *p = (char *) string;
1242         char *opt;
1243         int i;
1244
1245         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1246                 log_info("fio: dumping debug options:");
1247                 for (i = 0; debug_levels[i].name; i++) {
1248                         dl = &debug_levels[i];
1249                         log_info("%s,", dl->name);
1250                 }
1251                 log_info("all\n");
1252                 return 1;
1253         }
1254
1255         while ((opt = strsep(&p, ",")) != NULL) {
1256                 int found = 0;
1257
1258                 if (!strncmp(opt, "all", 3)) {
1259                         log_info("fio: set all debug options\n");
1260                         fio_debug = ~0UL;
1261                         continue;
1262                 }
1263
1264                 for (i = 0; debug_levels[i].name; i++) {
1265                         dl = &debug_levels[i];
1266                         found = !strncmp(opt, dl->name, strlen(dl->name));
1267                         if (!found)
1268                                 continue;
1269
1270                         if (dl->shift == FD_JOB) {
1271                                 opt = strchr(opt, ':');
1272                                 if (!opt) {
1273                                         log_err("fio: missing job number\n");
1274                                         break;
1275                                 }
1276                                 opt++;
1277                                 fio_debug_jobno = atoi(opt);
1278                                 log_info("fio: set debug jobno %d\n",
1279                                                         fio_debug_jobno);
1280                         } else {
1281                                 log_info("fio: set debug option %s\n", opt);
1282                                 fio_debug |= (1UL << dl->shift);
1283                         }
1284                         break;
1285                 }
1286
1287                 if (!found)
1288                         log_err("fio: debug mask %s not found\n", opt);
1289         }
1290         return 0;
1291 }
1292 #else
1293 static int set_debug(const char *string)
1294 {
1295         log_err("fio: debug tracing not included in build\n");
1296         return 1;
1297 }
1298 #endif
1299
1300 static void fio_options_fill_optstring(void)
1301 {
1302         char *ostr = cmd_optstr;
1303         int i, c;
1304
1305         c = i = 0;
1306         while (l_opts[i].name) {
1307                 ostr[c++] = l_opts[i].val;
1308                 if (l_opts[i].has_arg == required_argument)
1309                         ostr[c++] = ':';
1310                 else if (l_opts[i].has_arg == optional_argument) {
1311                         ostr[c++] = ':';
1312                         ostr[c++] = ':';
1313                 }
1314                 i++;
1315         }
1316         ostr[c] = '\0';
1317 }
1318
1319 static int client_flag_set(char c)
1320 {
1321         int i;
1322
1323         i = 0;
1324         while (l_opts[i].name) {
1325                 int val = l_opts[i].val;
1326
1327                 if (c == (val & 0xff))
1328                         return (val & FIO_CLIENT_FLAG);
1329
1330                 i++;
1331         }
1332
1333         return 0;
1334 }
1335
1336 void parse_cmd_client(void *client, char *opt)
1337 {
1338         fio_client_add_cmd_option(client, opt);
1339 }
1340
1341 int parse_cmd_line(int argc, char *argv[])
1342 {
1343         struct thread_data *td = NULL;
1344         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1345         char *ostr = cmd_optstr;
1346         void *pid_file = NULL;
1347         void *cur_client = NULL;
1348         int backend = 0;
1349
1350         /*
1351          * Reset optind handling, since we may call this multiple times
1352          * for the backend.
1353          */
1354         optind = 1;
1355
1356         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1357                 did_arg = 1;
1358
1359                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1360                         parse_cmd_client(cur_client, argv[optind - 1]);
1361                         c &= ~FIO_CLIENT_FLAG;
1362                 }
1363
1364                 switch (c) {
1365                 case 'a':
1366                         smalloc_pool_size = atoi(optarg);
1367                         break;
1368                 case 't':
1369                         def_timeout = atoi(optarg);
1370                         break;
1371                 case 'l':
1372                         write_lat_log = 1;
1373                         break;
1374                 case 'b':
1375                         write_bw_log = 1;
1376                         break;
1377                 case 'o':
1378                         f_out = fopen(optarg, "w+");
1379                         if (!f_out) {
1380                                 perror("fopen output");
1381                                 exit(1);
1382                         }
1383                         f_err = f_out;
1384                         break;
1385                 case 'm':
1386                         terse_output = 1;
1387                         break;
1388                 case 'h':
1389                         if (!cur_client) {
1390                                 usage(argv[0]);
1391                                 do_exit++;
1392                         }
1393                         break;
1394                 case 'c':
1395                         if (!cur_client) {
1396                                 fio_show_option_help(optarg);
1397                                 do_exit++;
1398                         }
1399                         break;
1400                 case 'i':
1401                         if (!cur_client) {
1402                                 fio_show_ioengine_help(optarg);
1403                                 do_exit++;
1404                         }
1405                         break;
1406                 case 's':
1407                         dump_cmdline = 1;
1408                         break;
1409                 case 'r':
1410                         read_only = 1;
1411                         break;
1412                 case 'v':
1413                         if (!cur_client) {
1414                                 log_info("fio %s\n", fio_version_string);
1415                                 do_exit++;
1416                         }
1417                         break;
1418                 case 'V':
1419                         terse_version = atoi(optarg);
1420                         if (!(terse_version == 2 || terse_version == 3)) {
1421                                 log_err("fio: bad terse version format\n");
1422                                 exit_val = 1;
1423                                 do_exit++;
1424                         }
1425                         break;
1426                 case 'e':
1427                         if (!strcmp("always", optarg))
1428                                 eta_print = FIO_ETA_ALWAYS;
1429                         else if (!strcmp("never", optarg))
1430                                 eta_print = FIO_ETA_NEVER;
1431                         break;
1432                 case 'd':
1433                         if (set_debug(optarg))
1434                                 do_exit++;
1435                         break;
1436                 case 'x': {
1437                         size_t new_size;
1438
1439                         if (!strcmp(optarg, "global")) {
1440                                 log_err("fio: can't use global as only "
1441                                         "section\n");
1442                                 do_exit++;
1443                                 exit_val = 1;
1444                                 break;
1445                         }
1446                         new_size = (nr_job_sections + 1) * sizeof(char *);
1447                         job_sections = realloc(job_sections, new_size);
1448                         job_sections[nr_job_sections] = strdup(optarg);
1449                         nr_job_sections++;
1450                         break;
1451                         }
1452                 case 'p':
1453                         exec_profile = strdup(optarg);
1454                         break;
1455                 case FIO_GETOPT_JOB: {
1456                         const char *opt = l_opts[lidx].name;
1457                         char *val = optarg;
1458
1459                         if (!strncmp(opt, "name", 4) && td) {
1460                                 ret = add_job(td, td->o.name ?: "fio", 0);
1461                                 if (ret)
1462                                         return 0;
1463                                 td = NULL;
1464                         }
1465                         if (!td) {
1466                                 int is_section = !strncmp(opt, "name", 4);
1467                                 int global = 0;
1468
1469                                 if (!is_section || !strncmp(val, "global", 6))
1470                                         global = 1;
1471
1472                                 if (is_section && skip_this_section(val))
1473                                         continue;
1474
1475                                 td = get_new_job(global, &def_thread, 1);
1476                                 if (!td || ioengine_load(td))
1477                                         return 0;
1478                                 fio_options_set_ioengine_opts(l_opts, td);
1479                         }
1480
1481                         ret = fio_cmd_option_parse(td, opt, val);
1482
1483                         if (!ret && !strcmp(opt, "ioengine")) {
1484                                 free_ioengine(td);
1485                                 if (ioengine_load(td))
1486                                         return 0;
1487                                 fio_options_set_ioengine_opts(l_opts, td);
1488                         }
1489                         break;
1490                 }
1491                 case FIO_GETOPT_IOENGINE: {
1492                         const char *opt = l_opts[lidx].name;
1493                         char *val = optarg;
1494                         opt = l_opts[lidx].name;
1495                         val = optarg;
1496                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1497                         break;
1498                 }
1499                 case 'w':
1500                         warnings_fatal = 1;
1501                         break;
1502                 case 'j':
1503                         max_jobs = atoi(optarg);
1504                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1505                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1506                                 do_exit++;
1507                                 exit_val = 1;
1508                         }
1509                         break;
1510                 case 'S':
1511                         if (nr_clients) {
1512                                 log_err("fio: can't be both client and server\n");
1513                                 do_exit++;
1514                                 exit_val = 1;
1515                                 break;
1516                         }
1517                         if (optarg)
1518                                 fio_server_set_arg(optarg);
1519                         is_backend = 1;
1520                         backend = 1;
1521                         break;
1522                 case 'D':
1523                         pid_file = strdup(optarg);
1524                         break;
1525                 case 'C':
1526                         if (is_backend) {
1527                                 log_err("fio: can't be both client and server\n");
1528                                 do_exit++;
1529                                 exit_val = 1;
1530                                 break;
1531                         }
1532                         if (fio_client_add(optarg, &cur_client)) {
1533                                 log_err("fio: failed adding client %s\n", optarg);
1534                                 do_exit++;
1535                                 exit_val = 1;
1536                                 break;
1537                         }
1538                         break;
1539                 default:
1540                         do_exit++;
1541                         exit_val = 1;
1542                         break;
1543                 }
1544                 if (do_exit)
1545                         break;
1546         }
1547
1548         if (do_exit) {
1549                 if (exit_val && !(is_backend || nr_clients))
1550                         exit(exit_val);
1551         }
1552
1553         if (nr_clients && fio_clients_connect()) {
1554                 do_exit++;
1555                 exit_val = 1;
1556                 return -1;
1557         }
1558
1559         if (is_backend && backend)
1560                 return fio_start_server(pid_file);
1561
1562         if (td) {
1563                 if (!ret)
1564                         ret = add_job(td, td->o.name ?: "fio", 0);
1565         }
1566
1567         while (!ret && optind < argc) {
1568                 ini_idx++;
1569                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1570                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1571                 optind++;
1572         }
1573
1574         return ini_idx;
1575 }
1576
1577 int parse_options(int argc, char *argv[])
1578 {
1579         int job_files, i;
1580
1581         f_out = stdout;
1582         f_err = stderr;
1583
1584         fio_options_fill_optstring();
1585         fio_options_dup_and_init(l_opts);
1586
1587         atexit(free_shm);
1588
1589         if (fill_def_thread())
1590                 return 1;
1591
1592         job_files = parse_cmd_line(argc, argv);
1593
1594         if (job_files > 0) {
1595                 for (i = 0; i < job_files; i++) {
1596                         if (fill_def_thread())
1597                                 return 1;
1598                         if (nr_clients) {
1599                                 if (fio_clients_send_ini(ini_file[i]))
1600                                         return 1;
1601                                 free(ini_file[i]);
1602                         } else if (!is_backend) {
1603                                 if (parse_jobs_ini(ini_file[i], 0, i))
1604                                         return 1;
1605                                 free(ini_file[i]);
1606                         }
1607                 }
1608         }
1609
1610         free(ini_file);
1611         fio_options_free(&def_thread);
1612
1613         if (!thread_number) {
1614                 if (dump_cmdline)
1615                         return 0;
1616                 if (exec_profile)
1617                         return 0;
1618                 if (is_backend || nr_clients)
1619                         return 0;
1620                 if (did_arg)
1621                         return 0;
1622
1623                 log_err("No jobs(s) defined\n\n");
1624
1625                 if (!did_arg) {
1626                         usage(argv[0]);
1627                         return 1;
1628                 }
1629
1630                 return 0;
1631         }
1632
1633         if (def_thread.o.gtod_offload) {
1634                 fio_gtod_init();
1635                 fio_gtod_offload = 1;
1636                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1637         }
1638
1639         if (!terse_output)
1640                 log_info("fio %s\n", fio_version_string);
1641
1642         return 0;
1643 }