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 const char fio_version_string[] = FIO_VERSION;
  27
  28 #define FIO_RANDSEED            (0xb1899bedUL)
  29
  30 static char **ini_file;
  31 static int max_jobs = FIO_MAX_JOBS;
  32 static int dump_cmdline;
  33 static int def_timeout;
  34
  35 static struct thread_data def_thread;
  36 struct thread_data *threads = NULL;
  37
  38 int exitall_on_terminate = 0;
  39 int terse_output = 0;
  40 int eta_print;
  41 unsigned long long mlock_size = 0;
  42 FILE *f_out = NULL;
  43 FILE *f_err = NULL;
  44 char **job_sections = NULL;
  45 int nr_job_sections = 0;
  46 char *exec_profile = NULL;
  47 int warnings_fatal = 0;
  48 int terse_version = 3;
  49 int is_backend = 0;
  50 int nr_clients = 0;
  51 int log_syslog = 0;
  52
  53 int write_bw_log = 0;
  54 int read_only = 0;
  55
  56 static int write_lat_log;
  57
  58 static int prev_group_jobs;
  59
  60 unsigned long fio_debug = 0;
  61 unsigned int fio_debug_jobno = -1;
  62 unsigned int *fio_debug_jobp = NULL;
  63
  64 static char cmd_optstr[256];
  65 static int did_arg;
  66
  67 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  68         { .u.f  =  1.00 },
  69         { .u.f  =  5.00 },
  70         { .u.f  = 10.00 },
  71         { .u.f  = 20.00 },
  72         { .u.f  = 30.00 },
  73         { .u.f  = 40.00 },
  74         { .u.f  = 50.00 },
  75         { .u.f  = 60.00 },
  76         { .u.f  = 70.00 },
  77         { .u.f  = 80.00 },
  78         { .u.f  = 90.00 },
  79         { .u.f  = 95.00 },
  80         { .u.f  = 99.00 },
  81         { .u.f  = 99.50 },
  82         { .u.f  = 99.90 },
  83         { .u.f  = 99.95 },
  84         { .u.f  = 99.99 },
  85 };
  86
  87 #define FIO_CLIENT_FLAG         (1 << 16)
  88
  89 /*
  90  * Command line options. These will contain the above, plus a few
  91  * extra that only pertain to fio itself and not jobs.
  92  */
  93 static struct option l_opts[FIO_NR_OPTIONS] = {
  94         {
  95                 .name           = (char *) "output",
  96                 .has_arg        = required_argument,
  97                 .val            = 'o' | FIO_CLIENT_FLAG,
  98         },
  99         {
 100                 .name           = (char *) "timeout",
 101                 .has_arg        = required_argument,
 102                 .val            = 't' | FIO_CLIENT_FLAG,
 103         },
 104         {
 105                 .name           = (char *) "latency-log",
 106                 .has_arg        = required_argument,
 107                 .val            = 'l' | FIO_CLIENT_FLAG,
 108         },
 109         {
 110                 .name           = (char *) "bandwidth-log",
 111                 .has_arg        = required_argument,
 112                 .val            = 'b' | FIO_CLIENT_FLAG,
 113         },
 114         {
 115                 .name           = (char *) "minimal",
 116                 .has_arg        = optional_argument,
 117                 .val            = 'm' | FIO_CLIENT_FLAG,
 118         },
 119         {
 120                 .name           = (char *) "json-output",
 121                 .has_arg        = optional_argument,
 122                 .val            = 'J' | FIO_CLIENT_FLAG,
 123         },
 124         {
 125                 .name           = (char *) "version",
 126                 .has_arg        = no_argument,
 127                 .val            = 'v' | FIO_CLIENT_FLAG,
 128         },
 129         {
 130                 .name           = (char *) "help",
 131                 .has_arg        = no_argument,
 132                 .val            = 'h' | FIO_CLIENT_FLAG,
 133         },
 134         {
 135                 .name           = (char *) "cmdhelp",
 136                 .has_arg        = optional_argument,
 137                 .val            = 'c' | FIO_CLIENT_FLAG,
 138         },
 139         {
 140                 .name              = (char *) "enghelp",
 141                 .has_arg        = optional_argument,
 142                 .val                = 'i' | FIO_CLIENT_FLAG,
 143         },
 144         {
 145                 .name           = (char *) "showcmd",
 146                 .has_arg        = no_argument,
 147                 .val            = 's' | FIO_CLIENT_FLAG,
 148         },
 149         {
 150                 .name           = (char *) "readonly",
 151                 .has_arg        = no_argument,
 152                 .val            = 'r' | FIO_CLIENT_FLAG,
 153         },
 154         {
 155                 .name           = (char *) "eta",
 156                 .has_arg        = required_argument,
 157                 .val            = 'e' | FIO_CLIENT_FLAG,
 158         },
 159         {
 160                 .name           = (char *) "debug",
 161                 .has_arg        = required_argument,
 162                 .val            = 'd' | FIO_CLIENT_FLAG,
 163         },
 164         {
 165                 .name           = (char *) "section",
 166                 .has_arg        = required_argument,
 167                 .val            = 'x' | FIO_CLIENT_FLAG,
 168         },
 169         {
 170                 .name           = (char *) "alloc-size",
 171                 .has_arg        = required_argument,
 172                 .val            = 'a' | FIO_CLIENT_FLAG,
 173         },
 174         {
 175                 .name           = (char *) "profile",
 176                 .has_arg        = required_argument,
 177                 .val            = 'p' | FIO_CLIENT_FLAG,
 178         },
 179         {
 180                 .name           = (char *) "warnings-fatal",
 181                 .has_arg        = no_argument,
 182                 .val            = 'w' | FIO_CLIENT_FLAG,
 183         },
 184         {
 185                 .name           = (char *) "max-jobs",
 186                 .has_arg        = required_argument,
 187                 .val            = 'j' | FIO_CLIENT_FLAG,
 188         },
 189         {
 190                 .name           = (char *) "terse-version",
 191                 .has_arg        = required_argument,
 192                 .val            = 'V' | FIO_CLIENT_FLAG,
 193         },
 194         {
 195                 .name           = (char *) "server",
 196                 .has_arg        = optional_argument,
 197                 .val            = 'S',
 198         },
 199         {       .name           = (char *) "daemonize",
 200                 .has_arg        = required_argument,
 201                 .val            = 'D',
 202         },
 203         {
 204                 .name           = (char *) "client",
 205                 .has_arg        = required_argument,
 206                 .val            = 'C',
 207         },
 208         {
 209                 .name           = NULL,
 210         },
 211 };
 212
 213 static void free_shm(void)
 214 {
 215         struct shmid_ds sbuf;
 216
 217         if (threads) {
 218                 void *tp = threads;
 219
 220                 threads = NULL;
 221                 file_hash_exit();
 222                 flow_exit();
 223                 fio_debug_jobp = NULL;
 224                 shmdt(tp);
 225                 shmctl(shm_id, IPC_RMID, &sbuf);
 226         }
 227
 228         scleanup();
 229 }
 230
 231 /*
 232  * The thread area is shared between the main process and the job
 233  * threads/processes. So setup a shared memory segment that will hold
 234  * all the job info. We use the end of the region for keeping track of
 235  * open files across jobs, for file sharing.
 236  */
 237 static int setup_thread_area(void)
 238 {
 239         void *hash;
 240
 241         if (threads)
 242                 return 0;
 243
 244         /*
 245          * 1024 is too much on some machines, scale max_jobs if
 246          * we get a failure that looks like too large a shm segment
 247          */
 248         do {
 249                 size_t size = max_jobs * sizeof(struct thread_data);
 250
 251                 size += file_hash_size;
 252                 size += sizeof(unsigned int);
 253
 254                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 255                 if (shm_id != -1)
 256                         break;
 257                 if (errno != EINVAL && errno != ENOMEM) {
 258                         perror("shmget");
 259                         break;
 260                 }
 261
 262                 max_jobs >>= 1;
 263         } while (max_jobs);
 264
 265         if (shm_id == -1)
 266                 return 1;
 267
 268         threads = shmat(shm_id, NULL, 0);
 269         if (threads == (void *) -1) {
 270                 perror("shmat");
 271                 return 1;
 272         }
 273
 274         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 275         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 276         fio_debug_jobp = (void *) hash + file_hash_size;
 277         *fio_debug_jobp = -1;
 278         file_hash_init(hash);
 279
 280         flow_init();
 281
 282         return 0;
 283 }
 284
 285 /*
 286  * Return a free job structure.
 287  */
 288 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 289                                        int preserve_eo)
 290 {
 291         struct thread_data *td;
 292
 293         if (global)
 294                 return &def_thread;
 295         if (setup_thread_area()) {
 296                 log_err("error: failed to setup shm segment\n");
 297                 return NULL;
 298         }
 299         if (thread_number >= max_jobs) {
 300                 log_err("error: maximum number of jobs (%d) reached.\n",
 301                                 max_jobs);
 302                 return NULL;
 303         }
 304
 305         td = &threads[thread_number++];
 306         *td = *parent;
 307
 308         td->io_ops = NULL;
 309         if (!preserve_eo)
 310                 td->eo = NULL;
 311
 312         td->o.uid = td->o.gid = -1U;
 313
 314         dup_files(td, parent);
 315         fio_options_mem_dupe(td);
 316
 317         profile_add_hooks(td);
 318
 319         td->thread_number = thread_number;
 320         return td;
 321 }
 322
 323 static void put_job(struct thread_data *td)
 324 {
 325         if (td == &def_thread)
 326                 return;
 327
 328         profile_td_exit(td);
 329         flow_exit_job(td);
 330
 331         if (td->error)
 332                 log_info("fio: %s\n", td->verror);
 333
 334         fio_options_free(td);
 335         if (td->io_ops)
 336                 free_ioengine(td);
 337
 338         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 339         thread_number--;
 340 }
 341
 342 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 343 {
 344         unsigned int bs = td->o.min_bs[ddir];
 345
 346         assert(ddir_rw(ddir));
 347
 348         if (td->o.rate[ddir])
 349                 td->rate_bps[ddir] = td->o.rate[ddir];
 350         else
 351                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 352
 353         if (!td->rate_bps[ddir]) {
 354                 log_err("rate lower than supported\n");
 355                 return -1;
 356         }
 357
 358         td->rate_pending_usleep[ddir] = 0;
 359         return 0;
 360 }
 361
 362 static int setup_rate(struct thread_data *td)
 363 {
 364         int ret = 0;
 365
 366         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 367                 ret = __setup_rate(td, DDIR_READ);
 368         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 369                 ret |= __setup_rate(td, DDIR_WRITE);
 370         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 371                 ret |= __setup_rate(td, DDIR_TRIM);
 372
 373         return ret;
 374 }
 375
 376 static int fixed_block_size(struct thread_options *o)
 377 {
 378         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 379                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 380                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 381                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 382                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 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         if (!o->min_bs[DDIR_TRIM])
 439                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 440         if (!o->max_bs[DDIR_TRIM])
 441                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 442
 443
 444         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 445         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 446
 447         /*
 448          * For random IO, allow blockalign offset other than min_bs.
 449          */
 450         if (!o->ba[DDIR_READ] || !td_random(td))
 451                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 452         if (!o->ba[DDIR_WRITE] || !td_random(td))
 453                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 454         if (!o->ba[DDIR_TRIM] || !td_random(td))
 455                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 456
 457         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 458             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 459             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 460             !o->norandommap) {
 461                 log_err("fio: Any use of blockalign= turns off randommap\n");
 462                 o->norandommap = 1;
 463                 ret = warnings_fatal;
 464         }
 465
 466         if (!o->file_size_high)
 467                 o->file_size_high = o->file_size_low;
 468
 469         if (o->norandommap && o->verify != VERIFY_NONE
 470             && !fixed_block_size(o))  {
 471                 log_err("fio: norandommap given for variable block sizes, "
 472                         "verify disabled\n");
 473                 o->verify = VERIFY_NONE;
 474                 ret = warnings_fatal;
 475         }
 476         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 477                 log_err("fio: bs_unaligned may not work with raw io\n");
 478
 479         /*
 480          * thinktime_spin must be less than thinktime
 481          */
 482         if (o->thinktime_spin > o->thinktime)
 483                 o->thinktime_spin = o->thinktime;
 484
 485         /*
 486          * The low water mark cannot be bigger than the iodepth
 487          */
 488         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 489                 /*
 490                  * syslet work around - if the workload is sequential,
 491                  * we want to let the queue drain all the way down to
 492                  * avoid seeking between async threads
 493                  */
 494                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 495                         o->iodepth_low = 1;
 496                 else
 497                         o->iodepth_low = o->iodepth;
 498         }
 499
 500         /*
 501          * If batch number isn't set, default to the same as iodepth
 502          */
 503         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 504                 o->iodepth_batch = o->iodepth;
 505
 506         if (o->nr_files > td->files_index)
 507                 o->nr_files = td->files_index;
 508
 509         if (o->open_files > o->nr_files || !o->open_files)
 510                 o->open_files = o->nr_files;
 511
 512         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 513             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 514             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 515             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 516                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 517                 ret = 1;
 518         }
 519         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 520             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 521             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 522             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 523             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 524             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 525                 log_err("fio: minimum rate exceeds rate\n");
 526                 ret = 1;
 527         }
 528
 529         if (!o->timeout && o->time_based) {
 530                 log_err("fio: time_based requires a runtime/timeout setting\n");
 531                 o->time_based = 0;
 532                 ret = warnings_fatal;
 533         }
 534
 535         if (o->fill_device && !o->size)
 536                 o->size = -1ULL;
 537
 538         if (o->verify != VERIFY_NONE) {
 539                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 540                         log_info("Multiple writers may overwrite blocks that "
 541                                 "belong to other jobs. This can cause "
 542                                 "verification failures.\n");
 543                         ret = warnings_fatal;
 544                 }
 545
 546                 o->refill_buffers = 1;
 547                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 548                     !o->verify_interval)
 549                         o->verify_interval = o->min_bs[DDIR_WRITE];
 550         }
 551
 552         if (o->pre_read) {
 553                 o->invalidate_cache = 0;
 554                 if (td->io_ops->flags & FIO_PIPEIO) {
 555                         log_info("fio: cannot pre-read files with an IO engine"
 556                                  " that isn't seekable. Pre-read disabled.\n");
 557                         ret = warnings_fatal;
 558                 }
 559         }
 560
 561 #ifndef FIO_HAVE_FDATASYNC
 562         if (o->fdatasync_blocks) {
 563                 log_info("fio: this platform does not support fdatasync()"
 564                          " falling back to using fsync().  Use the 'fsync'"
 565                          " option instead of 'fdatasync' to get rid of"
 566                          " this warning\n");
 567                 o->fsync_blocks = o->fdatasync_blocks;
 568                 o->fdatasync_blocks = 0;
 569                 ret = warnings_fatal;
 570         }
 571 #endif
 572
 573 #ifdef WIN32
 574         /*
 575          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 576          * so fail if we're passed those flags
 577          */
 578         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 579                 log_err("fio: Windows does not support direct or non-buffered io with"
 580                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 581                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 582                 ret = 1;
 583         }
 584 #endif
 585
 586         /*
 587          * For fully compressible data, just zero them at init time.
 588          * It's faster than repeatedly filling it.
 589          */
 590         if (td->o.compress_percentage == 100) {
 591                 td->o.zero_buffers = 1;
 592                 td->o.compress_percentage = 0;
 593         }
 594
 595         return ret;
 596 }
 597
 598 /*
 599  * This function leaks the buffer
 600  */
 601 static char *to_kmg(unsigned int val)
 602 {
 603         char *buf = malloc(32);
 604         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 605         char *p = post;
 606
 607         do {
 608                 if (val & 1023)
 609                         break;
 610
 611                 val >>= 10;
 612                 p++;
 613         } while (*p);
 614
 615         snprintf(buf, 31, "%u%c", val, *p);
 616         return buf;
 617 }
 618
 619 /* External engines are specified by "external:name.o") */
 620 static const char *get_engine_name(const char *str)
 621 {
 622         char *p = strstr(str, ":");
 623
 624         if (!p)
 625                 return str;
 626
 627         p++;
 628         strip_blank_front(&p);
 629         strip_blank_end(p);
 630         return p;
 631 }
 632
 633 static int exists_and_not_file(const char *filename)
 634 {
 635         struct stat sb;
 636
 637         if (lstat(filename, &sb) == -1)
 638                 return 0;
 639
 640         /* \\.\ is the device namespace in Windows, where every file
 641          * is a device node */
 642         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 643                 return 0;
 644
 645         return 1;
 646 }
 647
 648 static void td_fill_rand_seeds_os(struct thread_data *td)
 649 {
 650         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 651         os_random_seed(td->rand_seeds[1], &td->verify_state);
 652         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 653
 654         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 655                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 656
 657         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 658         os_random_seed(td->rand_seeds[6], &td->trim_state);
 659
 660         if (!td_random(td))
 661                 return;
 662
 663         if (td->o.rand_repeatable)
 664                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 665
 666         os_random_seed(td->rand_seeds[4], &td->random_state);
 667 }
 668
 669 static void td_fill_rand_seeds_internal(struct thread_data *td)
 670 {
 671         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 672         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 673         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 674
 675         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 676                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 677
 678         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 679         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 680
 681         if (!td_random(td))
 682                 return;
 683
 684         if (td->o.rand_repeatable)
 685                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 686
 687         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 688 }
 689
 690 void td_fill_rand_seeds(struct thread_data *td)
 691 {
 692         if (td->o.use_os_rand)
 693                 td_fill_rand_seeds_os(td);
 694         else
 695                 td_fill_rand_seeds_internal(td);
 696
 697         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 698 }
 699
 700
 701 /*
 702  * Initializes the ioengine configured for a job, if it has not been done so
 703  * already.
 704  */
 705 int ioengine_load(struct thread_data *td)
 706 {
 707         const char *engine;
 708
 709         /*
 710          * Engine has already been loaded.
 711          */
 712         if (td->io_ops)
 713                 return 0;
 714
 715         engine = get_engine_name(td->o.ioengine);
 716         td->io_ops = load_ioengine(td, engine);
 717         if (!td->io_ops) {
 718                 log_err("fio: failed to load engine %s\n", engine);
 719                 return 1;
 720         }
 721
 722         if (td->io_ops->option_struct_size && td->io_ops->options) {
 723                 /*
 724                  * In cases where td->eo is set, clone it for a child thread.
 725                  * This requires that the parent thread has the same ioengine,
 726                  * but that requirement must be enforced by the code which
 727                  * cloned the thread.
 728                  */
 729                 void *origeo = td->eo;
 730                 /*
 731                  * Otherwise use the default thread options.
 732                  */
 733                 if (!origeo && td != &def_thread && def_thread.eo &&
 734                     def_thread.io_ops->options == td->io_ops->options)
 735                         origeo = def_thread.eo;
 736
 737                 options_init(td->io_ops->options);
 738                 td->eo = malloc(td->io_ops->option_struct_size);
 739                 /*
 740                  * Use the default thread as an option template if this uses the
 741                  * same options structure and there are non-default options
 742                  * used.
 743                  */
 744                 if (origeo) {
 745                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 746                         options_mem_dupe(td->eo, td->io_ops->options);
 747                 } else {
 748                         memset(td->eo, 0, td->io_ops->option_struct_size);
 749                         fill_default_options(td->eo, td->io_ops->options);
 750                 }
 751                 *(struct thread_data **)td->eo = td;
 752         }
 753
 754         return 0;
 755 }
 756
 757 /*
 758  * Adds a job to the list of things todo. Sanitizes the various options
 759  * to make sure we don't have conflicts, and initializes various
 760  * members of td.
 761  */
 762 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 763 {
 764         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 765                                    "randread", "randwrite", "randrw",
 766                                    "trim", NULL, NULL, NULL, "randtrim" };
 767         unsigned int i;
 768         char fname[PATH_MAX];
 769         int numjobs, file_alloced;
 770
 771         /*
 772          * the def_thread is just for options, it's not a real job
 773          */
 774         if (td == &def_thread)
 775                 return 0;
 776
 777         /*
 778          * if we are just dumping the output command line, don't add the job
 779          */
 780         if (dump_cmdline) {
 781                 put_job(td);
 782                 return 0;
 783         }
 784
 785         if (profile_td_init(td))
 786                 goto err;
 787
 788         if (ioengine_load(td))
 789                 goto err;
 790
 791         if (td->o.use_thread)
 792                 nr_thread++;
 793         else
 794                 nr_process++;
 795
 796         if (td->o.odirect)
 797                 td->io_ops->flags |= FIO_RAWIO;
 798
 799         file_alloced = 0;
 800         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 801                 file_alloced = 1;
 802
 803                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 804                         add_file(td, jobname);
 805                 else {
 806                         for (i = 0; i < td->o.nr_files; i++) {
 807                                 sprintf(fname, "%s.%d.%d", jobname,
 808                                                         td->thread_number, i);
 809                                 add_file(td, fname);
 810                         }
 811                 }
 812         }
 813
 814         if (fixup_options(td))
 815                 goto err;
 816
 817         flow_init_job(td);
 818
 819         /*
 820          * IO engines only need this for option callbacks, and the address may
 821          * change in subprocesses.
 822          */
 823         if (td->eo)
 824                 *(struct thread_data **)td->eo = NULL;
 825
 826         if (td->io_ops->flags & FIO_DISKLESSIO) {
 827                 struct fio_file *f;
 828
 829                 for_each_file(td, f, i)
 830                         f->real_file_size = -1ULL;
 831         }
 832
 833         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
 834
 835         td->ts.clat_percentiles = td->o.clat_percentiles;
 836         if (td->o.overwrite_plist)
 837                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 838         else
 839                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 840
 841         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 842                 td->ts.clat_stat[i].min_val = ULONG_MAX;
 843                 td->ts.slat_stat[i].min_val = ULONG_MAX;
 844                 td->ts.lat_stat[i].min_val = ULONG_MAX;
 845                 td->ts.bw_stat[i].min_val = ULONG_MAX;
 846         }
 847         td->ddir_seq_nr = td->o.ddir_seq_nr;
 848
 849         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 850                 prev_group_jobs = 0;
 851                 groupid++;
 852         }
 853
 854         td->groupid = groupid;
 855         prev_group_jobs++;
 856
 857         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 858                 td_verror(td, errno, "init_random_state");
 859                 goto err;
 860         }
 861
 862         if (setup_rate(td))
 863                 goto err;
 864
 865         if (td->o.write_lat_log) {
 866                 setup_log(&td->lat_log, td->o.log_avg_msec);
 867                 setup_log(&td->slat_log, td->o.log_avg_msec);
 868                 setup_log(&td->clat_log, td->o.log_avg_msec);
 869         }
 870         if (td->o.write_bw_log)
 871                 setup_log(&td->bw_log, td->o.log_avg_msec);
 872         if (td->o.write_iops_log)
 873                 setup_log(&td->iops_log, td->o.log_avg_msec);
 874
 875         if (!td->o.name)
 876                 td->o.name = strdup(jobname);
 877
 878         if (!terse_output) {
 879                 if (!job_add_num) {
 880                         if (!strcmp(td->io_ops->name, "cpuio")) {
 881                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 882                                          " cpucycle=%u\n", td->o.name,
 883                                                         td->o.cpuload,
 884                                                         td->o.cpucycle);
 885                         } else {
 886                                 char *c1, *c2, *c3, *c4, *c5, *c6;
 887
 888                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 889                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 890                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 891                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 892                                 c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
 893                                 c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
 894
 895                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
 896                                          " ioengine=%s, iodepth=%u\n",
 897                                                 td->o.name, td->groupid,
 898                                                 ddir_str[td->o.td_ddir],
 899                                                 c1, c2, c3, c4, c5, c6,
 900                                                 td->io_ops->name,
 901                                                 td->o.iodepth);
 902
 903                                 free(c1);
 904                                 free(c2);
 905                                 free(c3);
 906                                 free(c4);
 907                                 free(c5);
 908                                 free(c6);
 909                         }
 910                 } else if (job_add_num == 1)
 911                         log_info("...\n");
 912         }
 913
 914         /*
 915          * recurse add identical jobs, clear numjobs and stonewall options
 916          * as they don't apply to sub-jobs
 917          */
 918         numjobs = td->o.numjobs;
 919         while (--numjobs) {
 920                 struct thread_data *td_new = get_new_job(0, td, 1);
 921
 922                 if (!td_new)
 923                         goto err;
 924
 925                 td_new->o.numjobs = 1;
 926                 td_new->o.stonewall = 0;
 927                 td_new->o.new_group = 0;
 928
 929                 if (file_alloced) {
 930                         td_new->o.filename = NULL;
 931                         td_new->files_index = 0;
 932                         td_new->files_size = 0;
 933                         td_new->files = NULL;
 934                 }
 935
 936                 job_add_num = numjobs - 1;
 937
 938                 if (add_job(td_new, jobname, job_add_num))
 939                         goto err;
 940         }
 941
 942         return 0;
 943 err:
 944         put_job(td);
 945         return -1;
 946 }
 947
 948 /*
 949  * Parse as if 'o' was a command line
 950  */
 951 void add_job_opts(const char **o)
 952 {
 953         struct thread_data *td, *td_parent;
 954         int i, in_global = 1;
 955         char jobname[32];
 956
 957         i = 0;
 958         td_parent = td = NULL;
 959         while (o[i]) {
 960                 if (!strncmp(o[i], "name", 4)) {
 961                         in_global = 0;
 962                         if (td)
 963                                 add_job(td, jobname, 0);
 964                         td = NULL;
 965                         sprintf(jobname, "%s", o[i] + 5);
 966                 }
 967                 if (in_global && !td_parent)
 968                         td_parent = get_new_job(1, &def_thread, 0);
 969                 else if (!in_global && !td) {
 970                         if (!td_parent)
 971                                 td_parent = &def_thread;
 972                         td = get_new_job(0, td_parent, 0);
 973                 }
 974                 if (in_global)
 975                         fio_options_parse(td_parent, (char **) &o[i], 1);
 976                 else
 977                         fio_options_parse(td, (char **) &o[i], 1);
 978                 i++;
 979         }
 980
 981         if (td)
 982                 add_job(td, jobname, 0);
 983 }
 984
 985 static int skip_this_section(const char *name)
 986 {
 987         int i;
 988
 989         if (!nr_job_sections)
 990                 return 0;
 991         if (!strncmp(name, "global", 6))
 992                 return 0;
 993
 994         for (i = 0; i < nr_job_sections; i++)
 995                 if (!strcmp(job_sections[i], name))
 996                         return 0;
 997
 998         return 1;
 999 }
1000
1001 static int is_empty_or_comment(char *line)
1002 {
1003         unsigned int i;
1004
1005         for (i = 0; i < strlen(line); i++) {
1006                 if (line[i] == ';')
1007                         return 1;
1008                 if (line[i] == '#')
1009                         return 1;
1010                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1011                         return 0;
1012         }
1013
1014         return 1;
1015 }
1016
1017 /*
1018  * This is our [ini] type file parser.
1019  */
1020 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1021 {
1022         unsigned int global;
1023         struct thread_data *td;
1024         char *string, *name;
1025         FILE *f;
1026         char *p;
1027         int ret = 0, stonewall;
1028         int first_sect = 1;
1029         int skip_fgets = 0;
1030         int inside_skip = 0;
1031         char **opts;
1032         int i, alloc_opts, num_opts;
1033
1034         if (is_buf)
1035                 f = NULL;
1036         else {
1037                 if (!strcmp(file, "-"))
1038                         f = stdin;
1039                 else
1040                         f = fopen(file, "r");
1041
1042                 if (!f) {
1043                         perror("fopen job file");
1044                         return 1;
1045                 }
1046         }
1047
1048         string = malloc(4096);
1049
1050         /*
1051          * it's really 256 + small bit, 280 should suffice
1052          */
1053         name = malloc(280);
1054         memset(name, 0, 280);
1055
1056         alloc_opts = 8;
1057         opts = malloc(sizeof(char *) * alloc_opts);
1058         num_opts = 0;
1059
1060         stonewall = stonewall_flag;
1061         do {
1062                 /*
1063                  * if skip_fgets is set, we already have loaded a line we
1064                  * haven't handled.
1065                  */
1066                 if (!skip_fgets) {
1067                         if (is_buf)
1068                                 p = strsep(&file, "\n");
1069                         else
1070                                 p = fgets(string, 4096, f);
1071                         if (!p)
1072                                 break;
1073                 }
1074
1075                 skip_fgets = 0;
1076                 strip_blank_front(&p);
1077                 strip_blank_end(p);
1078
1079                 if (is_empty_or_comment(p))
1080                         continue;
1081                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1082                         if (inside_skip)
1083                                 continue;
1084                         log_err("fio: option <%s> outside of [] job section\n",
1085                                                                         p);
1086                         break;
1087                 }
1088
1089                 name[strlen(name) - 1] = '\0';
1090
1091                 if (skip_this_section(name)) {
1092                         inside_skip = 1;
1093                         continue;
1094                 } else
1095                         inside_skip = 0;
1096
1097                 global = !strncmp(name, "global", 6);
1098
1099                 if (dump_cmdline) {
1100                         if (first_sect)
1101                                 log_info("fio ");
1102                         if (!global)
1103                                 log_info("--name=%s ", name);
1104                         first_sect = 0;
1105                 }
1106
1107                 td = get_new_job(global, &def_thread, 0);
1108                 if (!td) {
1109                         ret = 1;
1110                         break;
1111                 }
1112
1113                 /*
1114                  * Seperate multiple job files by a stonewall
1115                  */
1116                 if (!global && stonewall) {
1117                         td->o.stonewall = stonewall;
1118                         stonewall = 0;
1119                 }
1120
1121                 num_opts = 0;
1122                 memset(opts, 0, alloc_opts * sizeof(char *));
1123
1124                 while (1) {
1125                         if (is_buf)
1126                                 p = strsep(&file, "\n");
1127                         else
1128                                 p = fgets(string, 4096, f);
1129                         if (!p)
1130                                 break;
1131
1132                         if (is_empty_or_comment(p))
1133                                 continue;
1134
1135                         strip_blank_front(&p);
1136
1137                         /*
1138                          * new section, break out and make sure we don't
1139                          * fgets() a new line at the top.
1140                          */
1141                         if (p[0] == '[') {
1142                                 skip_fgets = 1;
1143                                 break;
1144                         }
1145
1146                         strip_blank_end(p);
1147
1148                         if (num_opts == alloc_opts) {
1149                                 alloc_opts <<= 1;
1150                                 opts = realloc(opts,
1151                                                 alloc_opts * sizeof(char *));
1152                         }
1153
1154                         opts[num_opts] = strdup(p);
1155                         num_opts++;
1156                 }
1157
1158                 ret = fio_options_parse(td, opts, num_opts);
1159                 if (!ret) {
1160                         if (dump_cmdline)
1161                                 for (i = 0; i < num_opts; i++)
1162                                         log_info("--%s ", opts[i]);
1163
1164                         ret = add_job(td, name, 0);
1165                 } else {
1166                         log_err("fio: job %s dropped\n", name);
1167                         put_job(td);
1168                 }
1169
1170                 for (i = 0; i < num_opts; i++)
1171                         free(opts[i]);
1172                 num_opts = 0;
1173         } while (!ret);
1174
1175         if (dump_cmdline)
1176                 log_info("\n");
1177
1178         i = 0;
1179         while (i < nr_job_sections) {
1180                 free(job_sections[i]);
1181                 i++;
1182         }
1183
1184         for (i = 0; i < num_opts; i++)
1185                 free(opts[i]);
1186
1187         free(string);
1188         free(name);
1189         free(opts);
1190         if (!is_buf && f != stdin)
1191                 fclose(f);
1192         return ret;
1193 }
1194
1195 static int fill_def_thread(void)
1196 {
1197         memset(&def_thread, 0, sizeof(def_thread));
1198
1199         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1200         def_thread.o.timeout = def_timeout;
1201
1202         /*
1203          * fill default options
1204          */
1205         fio_fill_default_options(&def_thread);
1206         return 0;
1207 }
1208
1209 static void usage(const char *name)
1210 {
1211         printf("%s\n", fio_version_string);
1212         printf("%s [options] [job options] <job file(s)>\n", name);
1213         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1214                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1215                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1216         printf("  --output\t\tWrite output to file\n");
1217         printf("  --runtime\t\tRuntime in seconds\n");
1218         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1219         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1220         printf("  --minimal\t\tMinimal (terse) output\n");
1221         printf("  --version\t\tPrint version info and exit\n");
1222         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1223         printf("  --help\t\tPrint this page\n");
1224         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1225                 " them\n");
1226         printf("  --enghelp=engine\tPrint ioengine help, or list"
1227                 " available ioengines\n");
1228         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1229                 " cmd\n");
1230         printf("  --showcmd\t\tTurn a job file into command line options\n");
1231         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1232         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1233         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1234                 " writes\n");
1235         printf("  --section=name\tOnly run specified section in job file\n");
1236         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1237                 " (def 1024)\n");
1238         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1239         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1240         printf("  --server=args\t\tStart a backend fio server\n");
1241         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1242         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1243         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1244         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1245 }
1246
1247 #ifdef FIO_INC_DEBUG
1248 struct debug_level debug_levels[] = {
1249         { .name = "process",    .shift = FD_PROCESS, },
1250         { .name = "file",       .shift = FD_FILE, },
1251         { .name = "io",         .shift = FD_IO, },
1252         { .name = "mem",        .shift = FD_MEM, },
1253         { .name = "blktrace",   .shift = FD_BLKTRACE },
1254         { .name = "verify",     .shift = FD_VERIFY },
1255         { .name = "random",     .shift = FD_RANDOM },
1256         { .name = "parse",      .shift = FD_PARSE },
1257         { .name = "diskutil",   .shift = FD_DISKUTIL },
1258         { .name = "job",        .shift = FD_JOB },
1259         { .name = "mutex",      .shift = FD_MUTEX },
1260         { .name = "profile",    .shift = FD_PROFILE },
1261         { .name = "time",       .shift = FD_TIME },
1262         { .name = "net",        .shift = FD_NET },
1263         { .name = NULL, },
1264 };
1265
1266 static int set_debug(const char *string)
1267 {
1268         struct debug_level *dl;
1269         char *p = (char *) string;
1270         char *opt;
1271         int i;
1272
1273         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1274                 log_info("fio: dumping debug options:");
1275                 for (i = 0; debug_levels[i].name; i++) {
1276                         dl = &debug_levels[i];
1277                         log_info("%s,", dl->name);
1278                 }
1279                 log_info("all\n");
1280                 return 1;
1281         }
1282
1283         while ((opt = strsep(&p, ",")) != NULL) {
1284                 int found = 0;
1285
1286                 if (!strncmp(opt, "all", 3)) {
1287                         log_info("fio: set all debug options\n");
1288                         fio_debug = ~0UL;
1289                         continue;
1290                 }
1291
1292                 for (i = 0; debug_levels[i].name; i++) {
1293                         dl = &debug_levels[i];
1294                         found = !strncmp(opt, dl->name, strlen(dl->name));
1295                         if (!found)
1296                                 continue;
1297
1298                         if (dl->shift == FD_JOB) {
1299                                 opt = strchr(opt, ':');
1300                                 if (!opt) {
1301                                         log_err("fio: missing job number\n");
1302                                         break;
1303                                 }
1304                                 opt++;
1305                                 fio_debug_jobno = atoi(opt);
1306                                 log_info("fio: set debug jobno %d\n",
1307                                                         fio_debug_jobno);
1308                         } else {
1309                                 log_info("fio: set debug option %s\n", opt);
1310                                 fio_debug |= (1UL << dl->shift);
1311                         }
1312                         break;
1313                 }
1314
1315                 if (!found)
1316                         log_err("fio: debug mask %s not found\n", opt);
1317         }
1318         return 0;
1319 }
1320 #else
1321 static int set_debug(const char *string)
1322 {
1323         log_err("fio: debug tracing not included in build\n");
1324         return 1;
1325 }
1326 #endif
1327
1328 static void fio_options_fill_optstring(void)
1329 {
1330         char *ostr = cmd_optstr;
1331         int i, c;
1332
1333         c = i = 0;
1334         while (l_opts[i].name) {
1335                 ostr[c++] = l_opts[i].val;
1336                 if (l_opts[i].has_arg == required_argument)
1337                         ostr[c++] = ':';
1338                 else if (l_opts[i].has_arg == optional_argument) {
1339                         ostr[c++] = ':';
1340                         ostr[c++] = ':';
1341                 }
1342                 i++;
1343         }
1344         ostr[c] = '\0';
1345 }
1346
1347 static int client_flag_set(char c)
1348 {
1349         int i;
1350
1351         i = 0;
1352         while (l_opts[i].name) {
1353                 int val = l_opts[i].val;
1354
1355                 if (c == (val & 0xff))
1356                         return (val & FIO_CLIENT_FLAG);
1357
1358                 i++;
1359         }
1360
1361         return 0;
1362 }
1363
1364 void parse_cmd_client(void *client, char *opt)
1365 {
1366         fio_client_add_cmd_option(client, opt);
1367 }
1368
1369 int parse_cmd_line(int argc, char *argv[])
1370 {
1371         struct thread_data *td = NULL;
1372         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1373         char *ostr = cmd_optstr;
1374         void *pid_file = NULL;
1375         void *cur_client = NULL;
1376         int backend = 0;
1377
1378         /*
1379          * Reset optind handling, since we may call this multiple times
1380          * for the backend.
1381          */
1382         optind = 1;
1383
1384         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1385                 did_arg = 1;
1386
1387                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1388                         parse_cmd_client(cur_client, argv[optind - 1]);
1389                         c &= ~FIO_CLIENT_FLAG;
1390                 }
1391
1392                 switch (c) {
1393                 case 'a':
1394                         smalloc_pool_size = atoi(optarg);
1395                         break;
1396                 case 't':
1397                         def_timeout = atoi(optarg);
1398                         break;
1399                 case 'l':
1400                         write_lat_log = 1;
1401                         break;
1402                 case 'b':
1403                         write_bw_log = 1;
1404                         break;
1405                 case 'o':
1406                         f_out = fopen(optarg, "w+");
1407                         if (!f_out) {
1408                                 perror("fopen output");
1409                                 exit(1);
1410                         }
1411                         f_err = f_out;
1412                         break;
1413                 case 'm':
1414                         terse_output = 1;
1415                         break;
1416                 case 'J':
1417                         terse_version = 4;
1418                         terse_output = 1;
1419                         break;
1420                 case 'h':
1421                         if (!cur_client) {
1422                                 usage(argv[0]);
1423                                 do_exit++;
1424                         }
1425                         break;
1426                 case 'c':
1427                         if (!cur_client) {
1428                                 fio_show_option_help(optarg);
1429                                 do_exit++;
1430                         }
1431                         break;
1432                 case 'i':
1433                         if (!cur_client) {
1434                                 fio_show_ioengine_help(optarg);
1435                                 do_exit++;
1436                         }
1437                         break;
1438                 case 's':
1439                         dump_cmdline = 1;
1440                         break;
1441                 case 'r':
1442                         read_only = 1;
1443                         break;
1444                 case 'v':
1445                         if (!cur_client) {
1446                                 log_info("%s\n", fio_version_string);
1447                                 do_exit++;
1448                         }
1449                         break;
1450                 case 'V':
1451                         if (terse_version == 4)
1452                                 break;
1453                         terse_version = atoi(optarg);
1454                         if (!(terse_version == 2 || terse_version == 3)) {
1455                                 log_err("fio: bad terse version format\n");
1456                                 exit_val = 1;
1457                                 do_exit++;
1458                         }
1459                         break;
1460                 case 'e':
1461                         if (!strcmp("always", optarg))
1462                                 eta_print = FIO_ETA_ALWAYS;
1463                         else if (!strcmp("never", optarg))
1464                                 eta_print = FIO_ETA_NEVER;
1465                         break;
1466                 case 'd':
1467                         if (set_debug(optarg))
1468                                 do_exit++;
1469                         break;
1470                 case 'x': {
1471                         size_t new_size;
1472
1473                         if (!strcmp(optarg, "global")) {
1474                                 log_err("fio: can't use global as only "
1475                                         "section\n");
1476                                 do_exit++;
1477                                 exit_val = 1;
1478                                 break;
1479                         }
1480                         new_size = (nr_job_sections + 1) * sizeof(char *);
1481                         job_sections = realloc(job_sections, new_size);
1482                         job_sections[nr_job_sections] = strdup(optarg);
1483                         nr_job_sections++;
1484                         break;
1485                         }
1486                 case 'p':
1487                         exec_profile = strdup(optarg);
1488                         break;
1489                 case FIO_GETOPT_JOB: {
1490                         const char *opt = l_opts[lidx].name;
1491                         char *val = optarg;
1492
1493                         if (!strncmp(opt, "name", 4) && td) {
1494                                 ret = add_job(td, td->o.name ?: "fio", 0);
1495                                 if (ret)
1496                                         return 0;
1497                                 td = NULL;
1498                         }
1499                         if (!td) {
1500                                 int is_section = !strncmp(opt, "name", 4);
1501                                 int global = 0;
1502
1503                                 if (!is_section || !strncmp(val, "global", 6))
1504                                         global = 1;
1505
1506                                 if (is_section && skip_this_section(val))
1507                                         continue;
1508
1509                                 td = get_new_job(global, &def_thread, 1);
1510                                 if (!td || ioengine_load(td))
1511                                         return 0;
1512                                 fio_options_set_ioengine_opts(l_opts, td);
1513                         }
1514
1515                         ret = fio_cmd_option_parse(td, opt, val);
1516
1517                         if (!ret && !strcmp(opt, "ioengine")) {
1518                                 free_ioengine(td);
1519                                 if (ioengine_load(td))
1520                                         return 0;
1521                                 fio_options_set_ioengine_opts(l_opts, td);
1522                         }
1523                         break;
1524                 }
1525                 case FIO_GETOPT_IOENGINE: {
1526                         const char *opt = l_opts[lidx].name;
1527                         char *val = optarg;
1528                         opt = l_opts[lidx].name;
1529                         val = optarg;
1530                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1531                         break;
1532                 }
1533                 case 'w':
1534                         warnings_fatal = 1;
1535                         break;
1536                 case 'j':
1537                         max_jobs = atoi(optarg);
1538                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1539                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1540                                 do_exit++;
1541                                 exit_val = 1;
1542                         }
1543                         break;
1544                 case 'S':
1545                         if (nr_clients) {
1546                                 log_err("fio: can't be both client and server\n");
1547                                 do_exit++;
1548                                 exit_val = 1;
1549                                 break;
1550                         }
1551                         if (optarg)
1552                                 fio_server_set_arg(optarg);
1553                         is_backend = 1;
1554                         backend = 1;
1555                         break;
1556                 case 'D':
1557                         pid_file = strdup(optarg);
1558                         break;
1559                 case 'C':
1560                         if (is_backend) {
1561                                 log_err("fio: can't be both client and server\n");
1562                                 do_exit++;
1563                                 exit_val = 1;
1564                                 break;
1565                         }
1566                         if (fio_client_add(optarg, &cur_client)) {
1567                                 log_err("fio: failed adding client %s\n", optarg);
1568                                 do_exit++;
1569                                 exit_val = 1;
1570                                 break;
1571                         }
1572                         /*
1573                          * If the next argument exists and isn't an option,
1574                          * assume it's a job file for this client only.
1575                          */
1576                         while (optind < argc) {
1577                                 if (!strncmp(argv[optind], "--", 2) ||
1578                                     !strncmp(argv[optind], "-", 1))
1579                                         break;
1580
1581                                 fio_client_add_ini_file(cur_client, argv[optind]);
1582                                 optind++;
1583                         }
1584                         break;
1585                 default:
1586                         do_exit++;
1587                         exit_val = 1;
1588                         break;
1589                 }
1590                 if (do_exit)
1591                         break;
1592         }
1593
1594         if (do_exit) {
1595                 if (exit_val && !(is_backend || nr_clients))
1596                         exit(exit_val);
1597         }
1598
1599         if (nr_clients && fio_clients_connect()) {
1600                 do_exit++;
1601                 exit_val = 1;
1602                 return -1;
1603         }
1604
1605         if (is_backend && backend)
1606                 return fio_start_server(pid_file);
1607
1608         if (td) {
1609                 if (!ret)
1610                         ret = add_job(td, td->o.name ?: "fio", 0);
1611         }
1612
1613         while (!ret && optind < argc) {
1614                 ini_idx++;
1615                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1616                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1617                 optind++;
1618         }
1619
1620         return ini_idx;
1621 }
1622
1623 int parse_options(int argc, char *argv[])
1624 {
1625         int job_files, i;
1626
1627         f_out = stdout;
1628         f_err = stderr;
1629
1630         fio_options_fill_optstring();
1631         fio_options_dup_and_init(l_opts);
1632
1633         atexit(free_shm);
1634
1635         if (fill_def_thread())
1636                 return 1;
1637
1638         job_files = parse_cmd_line(argc, argv);
1639
1640         if (job_files > 0) {
1641                 for (i = 0; i < job_files; i++) {
1642                         if (fill_def_thread())
1643                                 return 1;
1644                         if (nr_clients) {
1645                                 if (fio_clients_send_ini(ini_file[i]))
1646                                         return 1;
1647                                 free(ini_file[i]);
1648                         } else if (!is_backend) {
1649                                 if (parse_jobs_ini(ini_file[i], 0, i))
1650                                         return 1;
1651                                 free(ini_file[i]);
1652                         }
1653                 }
1654         } else if (nr_clients) {
1655                 if (fill_def_thread())
1656                         return 1;
1657                 if (fio_clients_send_ini(NULL))
1658                         return 1;
1659         }
1660
1661         free(ini_file);
1662         fio_options_free(&def_thread);
1663
1664         if (!thread_number) {
1665                 if (dump_cmdline)
1666                         return 0;
1667                 if (exec_profile)
1668                         return 0;
1669                 if (is_backend || nr_clients)
1670                         return 0;
1671                 if (did_arg)
1672                         return 0;
1673
1674                 log_err("No jobs(s) defined\n\n");
1675
1676                 if (!did_arg) {
1677                         usage(argv[0]);
1678                         return 1;
1679                 }
1680
1681                 return 0;
1682         }
1683
1684         if (def_thread.o.gtod_offload) {
1685                 fio_gtod_init();
1686                 fio_gtod_offload = 1;
1687                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1688         }
1689
1690         if (!terse_output)
1691                 log_info("%s\n", fio_version_string);
1692
1693         return 0;
1694 }