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 output_format = FIO_OUTPUT_NORMAL;
  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 *) "output-format",
 121                 .has_arg        = optional_argument,
 122                 .val            = 'F' | 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 && errno != ENOSPC) {
 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 static void init_rand_distribution(struct thread_data *td)
 386 {
 387         unsigned int range_size;
 388         unsigned long nranges;
 389
 390         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
 391                 return;
 392
 393         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
 394
 395         nranges = (td->o.size + range_size - 1) / range_size;
 396
 397         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 398                 zipf_init(&td->zipf, nranges, td->o.zipf_theta);
 399         else
 400                 pareto_init(&td->zipf, nranges, td->o.pareto_h);
 401 }
 402
 403 /*
 404  * Lazy way of fixing up options that depend on each other. We could also
 405  * define option callback handlers, but this is easier.
 406  */
 407 static int fixup_options(struct thread_data *td)
 408 {
 409         struct thread_options *o = &td->o;
 410         int ret = 0;
 411
 412 #ifndef FIO_HAVE_PSHARED_MUTEX
 413         if (!o->use_thread) {
 414                 log_info("fio: this platform does not support process shared"
 415                          " mutexes, forcing use of threads. Use the 'thread'"
 416                          " option to get rid of this warning.\n");
 417                 o->use_thread = 1;
 418                 ret = warnings_fatal;
 419         }
 420 #endif
 421
 422         if (o->write_iolog_file && o->read_iolog_file) {
 423                 log_err("fio: read iolog overrides write_iolog\n");
 424                 free(o->write_iolog_file);
 425                 o->write_iolog_file = NULL;
 426                 ret = warnings_fatal;
 427         }
 428
 429         /*
 430          * only really works with 1 file
 431          */
 432         if (o->zone_size && o->open_files == 1)
 433                 o->zone_size = 0;
 434
 435         /*
 436          * If zone_range isn't specified, backward compatibility dictates it
 437          * should be made equal to zone_size.
 438          */
 439         if (o->zone_size && !o->zone_range)
 440                 o->zone_range = o->zone_size;
 441
 442         /*
 443          * Reads can do overwrites, we always need to pre-create the file
 444          */
 445         if (td_read(td) || td_rw(td))
 446                 o->overwrite = 1;
 447
 448         if (!o->min_bs[DDIR_READ])
 449                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 450         if (!o->max_bs[DDIR_READ])
 451                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 452         if (!o->min_bs[DDIR_WRITE])
 453                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 454         if (!o->max_bs[DDIR_WRITE])
 455                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 456         if (!o->min_bs[DDIR_TRIM])
 457                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 458         if (!o->max_bs[DDIR_TRIM])
 459                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 460
 461
 462         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 463         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 464
 465         /*
 466          * For random IO, allow blockalign offset other than min_bs.
 467          */
 468         if (!o->ba[DDIR_READ] || !td_random(td))
 469                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 470         if (!o->ba[DDIR_WRITE] || !td_random(td))
 471                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 472         if (!o->ba[DDIR_TRIM] || !td_random(td))
 473                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 474
 475         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 476             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 477             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 478             !o->norandommap) {
 479                 log_err("fio: Any use of blockalign= turns off randommap\n");
 480                 o->norandommap = 1;
 481                 ret = warnings_fatal;
 482         }
 483
 484         if (!o->file_size_high)
 485                 o->file_size_high = o->file_size_low;
 486
 487         if (o->norandommap && o->verify != VERIFY_NONE
 488             && !fixed_block_size(o))  {
 489                 log_err("fio: norandommap given for variable block sizes, "
 490                         "verify disabled\n");
 491                 o->verify = VERIFY_NONE;
 492                 ret = warnings_fatal;
 493         }
 494         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 495                 log_err("fio: bs_unaligned may not work with raw io\n");
 496
 497         /*
 498          * thinktime_spin must be less than thinktime
 499          */
 500         if (o->thinktime_spin > o->thinktime)
 501                 o->thinktime_spin = o->thinktime;
 502
 503         /*
 504          * The low water mark cannot be bigger than the iodepth
 505          */
 506         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 507                 /*
 508                  * syslet work around - if the workload is sequential,
 509                  * we want to let the queue drain all the way down to
 510                  * avoid seeking between async threads
 511                  */
 512                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 513                         o->iodepth_low = 1;
 514                 else
 515                         o->iodepth_low = o->iodepth;
 516         }
 517
 518         /*
 519          * If batch number isn't set, default to the same as iodepth
 520          */
 521         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 522                 o->iodepth_batch = o->iodepth;
 523
 524         if (o->nr_files > td->files_index)
 525                 o->nr_files = td->files_index;
 526
 527         if (o->open_files > o->nr_files || !o->open_files)
 528                 o->open_files = o->nr_files;
 529
 530         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 531             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 532             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 533             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 534                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 535                 ret = 1;
 536         }
 537         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 538             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 539             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 540             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 541             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 542             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 543                 log_err("fio: minimum rate exceeds rate\n");
 544                 ret = 1;
 545         }
 546
 547         if (!o->timeout && o->time_based) {
 548                 log_err("fio: time_based requires a runtime/timeout setting\n");
 549                 o->time_based = 0;
 550                 ret = warnings_fatal;
 551         }
 552
 553         if (o->fill_device && !o->size)
 554                 o->size = -1ULL;
 555
 556         if (o->verify != VERIFY_NONE) {
 557                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 558                         log_info("Multiple writers may overwrite blocks that "
 559                                 "belong to other jobs. This can cause "
 560                                 "verification failures.\n");
 561                         ret = warnings_fatal;
 562                 }
 563
 564                 o->refill_buffers = 1;
 565                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 566                     !o->verify_interval)
 567                         o->verify_interval = o->min_bs[DDIR_WRITE];
 568         }
 569
 570         if (o->pre_read) {
 571                 o->invalidate_cache = 0;
 572                 if (td->io_ops->flags & FIO_PIPEIO) {
 573                         log_info("fio: cannot pre-read files with an IO engine"
 574                                  " that isn't seekable. Pre-read disabled.\n");
 575                         ret = warnings_fatal;
 576                 }
 577         }
 578
 579 #ifndef FIO_HAVE_FDATASYNC
 580         if (o->fdatasync_blocks) {
 581                 log_info("fio: this platform does not support fdatasync()"
 582                          " falling back to using fsync().  Use the 'fsync'"
 583                          " option instead of 'fdatasync' to get rid of"
 584                          " this warning\n");
 585                 o->fsync_blocks = o->fdatasync_blocks;
 586                 o->fdatasync_blocks = 0;
 587                 ret = warnings_fatal;
 588         }
 589 #endif
 590
 591 #ifdef WIN32
 592         /*
 593          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 594          * so fail if we're passed those flags
 595          */
 596         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 597                 log_err("fio: Windows does not support direct or non-buffered io with"
 598                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 599                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 600                 ret = 1;
 601         }
 602 #endif
 603
 604         /*
 605          * For fully compressible data, just zero them at init time.
 606          * It's faster than repeatedly filling it.
 607          */
 608         if (td->o.compress_percentage == 100) {
 609                 td->o.zero_buffers = 1;
 610                 td->o.compress_percentage = 0;
 611         }
 612
 613         init_rand_distribution(td);
 614
 615         return ret;
 616 }
 617
 618 /*
 619  * This function leaks the buffer
 620  */
 621 static char *to_kmg(unsigned int val)
 622 {
 623         char *buf = malloc(32);
 624         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 625         char *p = post;
 626
 627         do {
 628                 if (val & 1023)
 629                         break;
 630
 631                 val >>= 10;
 632                 p++;
 633         } while (*p);
 634
 635         snprintf(buf, 31, "%u%c", val, *p);
 636         return buf;
 637 }
 638
 639 /* External engines are specified by "external:name.o") */
 640 static const char *get_engine_name(const char *str)
 641 {
 642         char *p = strstr(str, ":");
 643
 644         if (!p)
 645                 return str;
 646
 647         p++;
 648         strip_blank_front(&p);
 649         strip_blank_end(p);
 650         return p;
 651 }
 652
 653 static int exists_and_not_file(const char *filename)
 654 {
 655         struct stat sb;
 656
 657         if (lstat(filename, &sb) == -1)
 658                 return 0;
 659
 660         /* \\.\ is the device namespace in Windows, where every file
 661          * is a device node */
 662         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 663                 return 0;
 664
 665         return 1;
 666 }
 667
 668 static void td_fill_rand_seeds_os(struct thread_data *td)
 669 {
 670         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 671         os_random_seed(td->rand_seeds[1], &td->verify_state);
 672         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 673
 674         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 675                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 676
 677         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 678         os_random_seed(td->rand_seeds[6], &td->trim_state);
 679
 680         if (!td_random(td))
 681                 return;
 682
 683         if (td->o.rand_repeatable)
 684                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 685
 686         os_random_seed(td->rand_seeds[4], &td->random_state);
 687 }
 688
 689 static void td_fill_rand_seeds_internal(struct thread_data *td)
 690 {
 691         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 692         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 693         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 694
 695         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 696                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 697
 698         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 699         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 700
 701         if (!td_random(td))
 702                 return;
 703
 704         if (td->o.rand_repeatable)
 705                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 706
 707         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 708 }
 709
 710 void td_fill_rand_seeds(struct thread_data *td)
 711 {
 712         if (td->o.use_os_rand)
 713                 td_fill_rand_seeds_os(td);
 714         else
 715                 td_fill_rand_seeds_internal(td);
 716
 717         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 718 }
 719
 720
 721 /*
 722  * Initializes the ioengine configured for a job, if it has not been done so
 723  * already.
 724  */
 725 int ioengine_load(struct thread_data *td)
 726 {
 727         const char *engine;
 728
 729         /*
 730          * Engine has already been loaded.
 731          */
 732         if (td->io_ops)
 733                 return 0;
 734
 735         engine = get_engine_name(td->o.ioengine);
 736         td->io_ops = load_ioengine(td, engine);
 737         if (!td->io_ops) {
 738                 log_err("fio: failed to load engine %s\n", engine);
 739                 return 1;
 740         }
 741
 742         if (td->io_ops->option_struct_size && td->io_ops->options) {
 743                 /*
 744                  * In cases where td->eo is set, clone it for a child thread.
 745                  * This requires that the parent thread has the same ioengine,
 746                  * but that requirement must be enforced by the code which
 747                  * cloned the thread.
 748                  */
 749                 void *origeo = td->eo;
 750                 /*
 751                  * Otherwise use the default thread options.
 752                  */
 753                 if (!origeo && td != &def_thread && def_thread.eo &&
 754                     def_thread.io_ops->options == td->io_ops->options)
 755                         origeo = def_thread.eo;
 756
 757                 options_init(td->io_ops->options);
 758                 td->eo = malloc(td->io_ops->option_struct_size);
 759                 /*
 760                  * Use the default thread as an option template if this uses the
 761                  * same options structure and there are non-default options
 762                  * used.
 763                  */
 764                 if (origeo) {
 765                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 766                         options_mem_dupe(td->eo, td->io_ops->options);
 767                 } else {
 768                         memset(td->eo, 0, td->io_ops->option_struct_size);
 769                         fill_default_options(td->eo, td->io_ops->options);
 770                 }
 771                 *(struct thread_data **)td->eo = td;
 772         }
 773
 774         return 0;
 775 }
 776
 777 /*
 778  * Adds a job to the list of things todo. Sanitizes the various options
 779  * to make sure we don't have conflicts, and initializes various
 780  * members of td.
 781  */
 782 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 783 {
 784         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 785                                    "randread", "randwrite", "randrw",
 786                                    "trim", NULL, NULL, NULL, "randtrim" };
 787         unsigned int i;
 788         char fname[PATH_MAX];
 789         int numjobs, file_alloced;
 790
 791         /*
 792          * the def_thread is just for options, it's not a real job
 793          */
 794         if (td == &def_thread)
 795                 return 0;
 796
 797         /*
 798          * if we are just dumping the output command line, don't add the job
 799          */
 800         if (dump_cmdline) {
 801                 put_job(td);
 802                 return 0;
 803         }
 804
 805         if (profile_td_init(td))
 806                 goto err;
 807
 808         if (ioengine_load(td))
 809                 goto err;
 810
 811         if (td->o.use_thread)
 812                 nr_thread++;
 813         else
 814                 nr_process++;
 815
 816         if (td->o.odirect)
 817                 td->io_ops->flags |= FIO_RAWIO;
 818
 819         file_alloced = 0;
 820         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 821                 file_alloced = 1;
 822
 823                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 824                         add_file(td, jobname);
 825                 else {
 826                         for (i = 0; i < td->o.nr_files; i++) {
 827                                 sprintf(fname, "%s.%d.%d", jobname,
 828                                                         td->thread_number, i);
 829                                 add_file(td, fname);
 830                         }
 831                 }
 832         }
 833
 834         if (fixup_options(td))
 835                 goto err;
 836
 837         flow_init_job(td);
 838
 839         /*
 840          * IO engines only need this for option callbacks, and the address may
 841          * change in subprocesses.
 842          */
 843         if (td->eo)
 844                 *(struct thread_data **)td->eo = NULL;
 845
 846         if (td->io_ops->flags & FIO_DISKLESSIO) {
 847                 struct fio_file *f;
 848
 849                 for_each_file(td, f, i)
 850                         f->real_file_size = -1ULL;
 851         }
 852
 853         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
 854
 855         td->ts.clat_percentiles = td->o.clat_percentiles;
 856         if (td->o.overwrite_plist)
 857                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 858         else
 859                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 860
 861         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 862                 td->ts.clat_stat[i].min_val = ULONG_MAX;
 863                 td->ts.slat_stat[i].min_val = ULONG_MAX;
 864                 td->ts.lat_stat[i].min_val = ULONG_MAX;
 865                 td->ts.bw_stat[i].min_val = ULONG_MAX;
 866         }
 867         td->ddir_seq_nr = td->o.ddir_seq_nr;
 868
 869         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 870                 prev_group_jobs = 0;
 871                 groupid++;
 872         }
 873
 874         td->groupid = groupid;
 875         prev_group_jobs++;
 876
 877         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 878                 td_verror(td, errno, "init_random_state");
 879                 goto err;
 880         }
 881
 882         if (setup_rate(td))
 883                 goto err;
 884
 885         if (td->o.write_lat_log) {
 886                 setup_log(&td->lat_log, td->o.log_avg_msec);
 887                 setup_log(&td->slat_log, td->o.log_avg_msec);
 888                 setup_log(&td->clat_log, td->o.log_avg_msec);
 889         }
 890         if (td->o.write_bw_log)
 891                 setup_log(&td->bw_log, td->o.log_avg_msec);
 892         if (td->o.write_iops_log)
 893                 setup_log(&td->iops_log, td->o.log_avg_msec);
 894
 895         if (!td->o.name)
 896                 td->o.name = strdup(jobname);
 897
 898         if (output_format == FIO_OUTPUT_NORMAL) {
 899                 if (!job_add_num) {
 900                         if (!strcmp(td->io_ops->name, "cpuio")) {
 901                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 902                                          " cpucycle=%u\n", td->o.name,
 903                                                         td->o.cpuload,
 904                                                         td->o.cpucycle);
 905                         } else {
 906                                 char *c1, *c2, *c3, *c4, *c5, *c6;
 907
 908                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 909                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 910                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 911                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 912                                 c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
 913                                 c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
 914
 915                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
 916                                          " ioengine=%s, iodepth=%u\n",
 917                                                 td->o.name, td->groupid,
 918                                                 ddir_str[td->o.td_ddir],
 919                                                 c1, c2, c3, c4, c5, c6,
 920                                                 td->io_ops->name,
 921                                                 td->o.iodepth);
 922
 923                                 free(c1);
 924                                 free(c2);
 925                                 free(c3);
 926                                 free(c4);
 927                                 free(c5);
 928                                 free(c6);
 929                         }
 930                 } else if (job_add_num == 1)
 931                         log_info("...\n");
 932         }
 933
 934         /*
 935          * recurse add identical jobs, clear numjobs and stonewall options
 936          * as they don't apply to sub-jobs
 937          */
 938         numjobs = td->o.numjobs;
 939         while (--numjobs) {
 940                 struct thread_data *td_new = get_new_job(0, td, 1);
 941
 942                 if (!td_new)
 943                         goto err;
 944
 945                 td_new->o.numjobs = 1;
 946                 td_new->o.stonewall = 0;
 947                 td_new->o.new_group = 0;
 948
 949                 if (file_alloced) {
 950                         td_new->o.filename = NULL;
 951                         td_new->files_index = 0;
 952                         td_new->files_size = 0;
 953                         td_new->files = NULL;
 954                 }
 955
 956                 job_add_num = numjobs - 1;
 957
 958                 if (add_job(td_new, jobname, job_add_num))
 959                         goto err;
 960         }
 961
 962         return 0;
 963 err:
 964         put_job(td);
 965         return -1;
 966 }
 967
 968 /*
 969  * Parse as if 'o' was a command line
 970  */
 971 void add_job_opts(const char **o)
 972 {
 973         struct thread_data *td, *td_parent;
 974         int i, in_global = 1;
 975         char jobname[32];
 976
 977         i = 0;
 978         td_parent = td = NULL;
 979         while (o[i]) {
 980                 if (!strncmp(o[i], "name", 4)) {
 981                         in_global = 0;
 982                         if (td)
 983                                 add_job(td, jobname, 0);
 984                         td = NULL;
 985                         sprintf(jobname, "%s", o[i] + 5);
 986                 }
 987                 if (in_global && !td_parent)
 988                         td_parent = get_new_job(1, &def_thread, 0);
 989                 else if (!in_global && !td) {
 990                         if (!td_parent)
 991                                 td_parent = &def_thread;
 992                         td = get_new_job(0, td_parent, 0);
 993                 }
 994                 if (in_global)
 995                         fio_options_parse(td_parent, (char **) &o[i], 1);
 996                 else
 997                         fio_options_parse(td, (char **) &o[i], 1);
 998                 i++;
 999         }
1000
1001         if (td)
1002                 add_job(td, jobname, 0);
1003 }
1004
1005 static int skip_this_section(const char *name)
1006 {
1007         int i;
1008
1009         if (!nr_job_sections)
1010                 return 0;
1011         if (!strncmp(name, "global", 6))
1012                 return 0;
1013
1014         for (i = 0; i < nr_job_sections; i++)
1015                 if (!strcmp(job_sections[i], name))
1016                         return 0;
1017
1018         return 1;
1019 }
1020
1021 static int is_empty_or_comment(char *line)
1022 {
1023         unsigned int i;
1024
1025         for (i = 0; i < strlen(line); i++) {
1026                 if (line[i] == ';')
1027                         return 1;
1028                 if (line[i] == '#')
1029                         return 1;
1030                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1031                         return 0;
1032         }
1033
1034         return 1;
1035 }
1036
1037 /*
1038  * This is our [ini] type file parser.
1039  */
1040 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1041 {
1042         unsigned int global;
1043         struct thread_data *td;
1044         char *string, *name;
1045         FILE *f;
1046         char *p;
1047         int ret = 0, stonewall;
1048         int first_sect = 1;
1049         int skip_fgets = 0;
1050         int inside_skip = 0;
1051         char **opts;
1052         int i, alloc_opts, num_opts;
1053
1054         if (is_buf)
1055                 f = NULL;
1056         else {
1057                 if (!strcmp(file, "-"))
1058                         f = stdin;
1059                 else
1060                         f = fopen(file, "r");
1061
1062                 if (!f) {
1063                         perror("fopen job file");
1064                         return 1;
1065                 }
1066         }
1067
1068         string = malloc(4096);
1069
1070         /*
1071          * it's really 256 + small bit, 280 should suffice
1072          */
1073         name = malloc(280);
1074         memset(name, 0, 280);
1075
1076         alloc_opts = 8;
1077         opts = malloc(sizeof(char *) * alloc_opts);
1078         num_opts = 0;
1079
1080         stonewall = stonewall_flag;
1081         do {
1082                 /*
1083                  * if skip_fgets is set, we already have loaded a line we
1084                  * haven't handled.
1085                  */
1086                 if (!skip_fgets) {
1087                         if (is_buf)
1088                                 p = strsep(&file, "\n");
1089                         else
1090                                 p = fgets(string, 4096, f);
1091                         if (!p)
1092                                 break;
1093                 }
1094
1095                 skip_fgets = 0;
1096                 strip_blank_front(&p);
1097                 strip_blank_end(p);
1098
1099                 if (is_empty_or_comment(p))
1100                         continue;
1101                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1102                         if (inside_skip)
1103                                 continue;
1104                         log_err("fio: option <%s> outside of [] job section\n",
1105                                                                         p);
1106                         break;
1107                 }
1108
1109                 name[strlen(name) - 1] = '\0';
1110
1111                 if (skip_this_section(name)) {
1112                         inside_skip = 1;
1113                         continue;
1114                 } else
1115                         inside_skip = 0;
1116
1117                 global = !strncmp(name, "global", 6);
1118
1119                 if (dump_cmdline) {
1120                         if (first_sect)
1121                                 log_info("fio ");
1122                         if (!global)
1123                                 log_info("--name=%s ", name);
1124                         first_sect = 0;
1125                 }
1126
1127                 td = get_new_job(global, &def_thread, 0);
1128                 if (!td) {
1129                         ret = 1;
1130                         break;
1131                 }
1132
1133                 /*
1134                  * Seperate multiple job files by a stonewall
1135                  */
1136                 if (!global && stonewall) {
1137                         td->o.stonewall = stonewall;
1138                         stonewall = 0;
1139                 }
1140
1141                 num_opts = 0;
1142                 memset(opts, 0, alloc_opts * sizeof(char *));
1143
1144                 while (1) {
1145                         if (is_buf)
1146                                 p = strsep(&file, "\n");
1147                         else
1148                                 p = fgets(string, 4096, f);
1149                         if (!p)
1150                                 break;
1151
1152                         if (is_empty_or_comment(p))
1153                                 continue;
1154
1155                         strip_blank_front(&p);
1156
1157                         /*
1158                          * new section, break out and make sure we don't
1159                          * fgets() a new line at the top.
1160                          */
1161                         if (p[0] == '[') {
1162                                 skip_fgets = 1;
1163                                 break;
1164                         }
1165
1166                         strip_blank_end(p);
1167
1168                         if (num_opts == alloc_opts) {
1169                                 alloc_opts <<= 1;
1170                                 opts = realloc(opts,
1171                                                 alloc_opts * sizeof(char *));
1172                         }
1173
1174                         opts[num_opts] = strdup(p);
1175                         num_opts++;
1176                 }
1177
1178                 ret = fio_options_parse(td, opts, num_opts);
1179                 if (!ret) {
1180                         if (dump_cmdline)
1181                                 for (i = 0; i < num_opts; i++)
1182                                         log_info("--%s ", opts[i]);
1183
1184                         ret = add_job(td, name, 0);
1185                 } else {
1186                         log_err("fio: job %s dropped\n", name);
1187                         put_job(td);
1188                 }
1189
1190                 for (i = 0; i < num_opts; i++)
1191                         free(opts[i]);
1192                 num_opts = 0;
1193         } while (!ret);
1194
1195         if (dump_cmdline)
1196                 log_info("\n");
1197
1198         i = 0;
1199         while (i < nr_job_sections) {
1200                 free(job_sections[i]);
1201                 i++;
1202         }
1203
1204         for (i = 0; i < num_opts; i++)
1205                 free(opts[i]);
1206
1207         free(string);
1208         free(name);
1209         free(opts);
1210         if (!is_buf && f != stdin)
1211                 fclose(f);
1212         return ret;
1213 }
1214
1215 static int fill_def_thread(void)
1216 {
1217         memset(&def_thread, 0, sizeof(def_thread));
1218
1219         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1220         def_thread.o.timeout = def_timeout;
1221         def_thread.o.error_dump = 1;
1222         /*
1223          * fill default options
1224          */
1225         fio_fill_default_options(&def_thread);
1226         return 0;
1227 }
1228
1229 static void usage(const char *name)
1230 {
1231         printf("%s\n", fio_version_string);
1232         printf("%s [options] [job options] <job file(s)>\n", name);
1233         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1234                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1235                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1236         printf("  --output\t\tWrite output to file\n");
1237         printf("  --runtime\t\tRuntime in seconds\n");
1238         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1239         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1240         printf("  --minimal\t\tMinimal (terse) output\n");
1241         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1242         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1243         printf("  --version\t\tPrint version info and exit\n");
1244         printf("  --help\t\tPrint this page\n");
1245         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1246                 " them\n");
1247         printf("  --enghelp=engine\tPrint ioengine help, or list"
1248                 " available ioengines\n");
1249         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1250                 " cmd\n");
1251         printf("  --showcmd\t\tTurn a job file into command line options\n");
1252         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1253         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1254         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1255                 " writes\n");
1256         printf("  --section=name\tOnly run specified section in job file\n");
1257         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1258                 " (def 1024)\n");
1259         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1260         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1261         printf("  --server=args\t\tStart a backend fio server\n");
1262         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1263         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1264         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1265         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1266 }
1267
1268 #ifdef FIO_INC_DEBUG
1269 struct debug_level debug_levels[] = {
1270         { .name = "process",    .shift = FD_PROCESS, },
1271         { .name = "file",       .shift = FD_FILE, },
1272         { .name = "io",         .shift = FD_IO, },
1273         { .name = "mem",        .shift = FD_MEM, },
1274         { .name = "blktrace",   .shift = FD_BLKTRACE },
1275         { .name = "verify",     .shift = FD_VERIFY },
1276         { .name = "random",     .shift = FD_RANDOM },
1277         { .name = "parse",      .shift = FD_PARSE },
1278         { .name = "diskutil",   .shift = FD_DISKUTIL },
1279         { .name = "job",        .shift = FD_JOB },
1280         { .name = "mutex",      .shift = FD_MUTEX },
1281         { .name = "profile",    .shift = FD_PROFILE },
1282         { .name = "time",       .shift = FD_TIME },
1283         { .name = "net",        .shift = FD_NET },
1284         { .name = NULL, },
1285 };
1286
1287 static int set_debug(const char *string)
1288 {
1289         struct debug_level *dl;
1290         char *p = (char *) string;
1291         char *opt;
1292         int i;
1293
1294         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1295                 log_info("fio: dumping debug options:");
1296                 for (i = 0; debug_levels[i].name; i++) {
1297                         dl = &debug_levels[i];
1298                         log_info("%s,", dl->name);
1299                 }
1300                 log_info("all\n");
1301                 return 1;
1302         }
1303
1304         while ((opt = strsep(&p, ",")) != NULL) {
1305                 int found = 0;
1306
1307                 if (!strncmp(opt, "all", 3)) {
1308                         log_info("fio: set all debug options\n");
1309                         fio_debug = ~0UL;
1310                         continue;
1311                 }
1312
1313                 for (i = 0; debug_levels[i].name; i++) {
1314                         dl = &debug_levels[i];
1315                         found = !strncmp(opt, dl->name, strlen(dl->name));
1316                         if (!found)
1317                                 continue;
1318
1319                         if (dl->shift == FD_JOB) {
1320                                 opt = strchr(opt, ':');
1321                                 if (!opt) {
1322                                         log_err("fio: missing job number\n");
1323                                         break;
1324                                 }
1325                                 opt++;
1326                                 fio_debug_jobno = atoi(opt);
1327                                 log_info("fio: set debug jobno %d\n",
1328                                                         fio_debug_jobno);
1329                         } else {
1330                                 log_info("fio: set debug option %s\n", opt);
1331                                 fio_debug |= (1UL << dl->shift);
1332                         }
1333                         break;
1334                 }
1335
1336                 if (!found)
1337                         log_err("fio: debug mask %s not found\n", opt);
1338         }
1339         return 0;
1340 }
1341 #else
1342 static int set_debug(const char *string)
1343 {
1344         log_err("fio: debug tracing not included in build\n");
1345         return 1;
1346 }
1347 #endif
1348
1349 static void fio_options_fill_optstring(void)
1350 {
1351         char *ostr = cmd_optstr;
1352         int i, c;
1353
1354         c = i = 0;
1355         while (l_opts[i].name) {
1356                 ostr[c++] = l_opts[i].val;
1357                 if (l_opts[i].has_arg == required_argument)
1358                         ostr[c++] = ':';
1359                 else if (l_opts[i].has_arg == optional_argument) {
1360                         ostr[c++] = ':';
1361                         ostr[c++] = ':';
1362                 }
1363                 i++;
1364         }
1365         ostr[c] = '\0';
1366 }
1367
1368 static int client_flag_set(char c)
1369 {
1370         int i;
1371
1372         i = 0;
1373         while (l_opts[i].name) {
1374                 int val = l_opts[i].val;
1375
1376                 if (c == (val & 0xff))
1377                         return (val & FIO_CLIENT_FLAG);
1378
1379                 i++;
1380         }
1381
1382         return 0;
1383 }
1384
1385 void parse_cmd_client(void *client, char *opt)
1386 {
1387         fio_client_add_cmd_option(client, opt);
1388 }
1389
1390 int parse_cmd_line(int argc, char *argv[])
1391 {
1392         struct thread_data *td = NULL;
1393         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1394         char *ostr = cmd_optstr;
1395         void *pid_file = NULL;
1396         void *cur_client = NULL;
1397         int backend = 0;
1398
1399         /*
1400          * Reset optind handling, since we may call this multiple times
1401          * for the backend.
1402          */
1403         optind = 1;
1404
1405         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1406                 did_arg = 1;
1407
1408                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1409                         parse_cmd_client(cur_client, argv[optind - 1]);
1410                         c &= ~FIO_CLIENT_FLAG;
1411                 }
1412
1413                 switch (c) {
1414                 case 'a':
1415                         smalloc_pool_size = atoi(optarg);
1416                         break;
1417                 case 't':
1418                         def_timeout = atoi(optarg);
1419                         break;
1420                 case 'l':
1421                         write_lat_log = 1;
1422                         break;
1423                 case 'b':
1424                         write_bw_log = 1;
1425                         break;
1426                 case 'o':
1427                         f_out = fopen(optarg, "w+");
1428                         if (!f_out) {
1429                                 perror("fopen output");
1430                                 exit(1);
1431                         }
1432                         f_err = f_out;
1433                         break;
1434                 case 'm':
1435                         output_format = FIO_OUTPUT_TERSE;
1436                         break;
1437                 case 'F':
1438                         if (!strcmp(optarg, "minimal") ||
1439                             !strcmp(optarg, "terse") ||
1440                             !strcmp(optarg, "csv"))
1441                                 output_format = FIO_OUTPUT_TERSE;
1442                         else if (!strcmp(optarg, "json"))
1443                                 output_format = FIO_OUTPUT_JSON;
1444                         else
1445                                 output_format = FIO_OUTPUT_NORMAL;
1446                         break;
1447                 case 'h':
1448                         if (!cur_client) {
1449                                 usage(argv[0]);
1450                                 do_exit++;
1451                         }
1452                         break;
1453                 case 'c':
1454                         if (!cur_client) {
1455                                 fio_show_option_help(optarg);
1456                                 do_exit++;
1457                         }
1458                         break;
1459                 case 'i':
1460                         if (!cur_client) {
1461                                 fio_show_ioengine_help(optarg);
1462                                 do_exit++;
1463                         }
1464                         break;
1465                 case 's':
1466                         dump_cmdline = 1;
1467                         break;
1468                 case 'r':
1469                         read_only = 1;
1470                         break;
1471                 case 'v':
1472                         if (!cur_client) {
1473                                 log_info("%s\n", fio_version_string);
1474                                 do_exit++;
1475                         }
1476                         break;
1477                 case 'V':
1478                         terse_version = atoi(optarg);
1479                         if (!(terse_version == 2 || terse_version == 3 ||
1480                              terse_version == 4)) {
1481                                 log_err("fio: bad terse version format\n");
1482                                 exit_val = 1;
1483                                 do_exit++;
1484                         }
1485                         break;
1486                 case 'e':
1487                         if (!strcmp("always", optarg))
1488                                 eta_print = FIO_ETA_ALWAYS;
1489                         else if (!strcmp("never", optarg))
1490                                 eta_print = FIO_ETA_NEVER;
1491                         break;
1492                 case 'd':
1493                         if (set_debug(optarg))
1494                                 do_exit++;
1495                         break;
1496                 case 'x': {
1497                         size_t new_size;
1498
1499                         if (!strcmp(optarg, "global")) {
1500                                 log_err("fio: can't use global as only "
1501                                         "section\n");
1502                                 do_exit++;
1503                                 exit_val = 1;
1504                                 break;
1505                         }
1506                         new_size = (nr_job_sections + 1) * sizeof(char *);
1507                         job_sections = realloc(job_sections, new_size);
1508                         job_sections[nr_job_sections] = strdup(optarg);
1509                         nr_job_sections++;
1510                         break;
1511                         }
1512                 case 'p':
1513                         exec_profile = strdup(optarg);
1514                         break;
1515                 case FIO_GETOPT_JOB: {
1516                         const char *opt = l_opts[lidx].name;
1517                         char *val = optarg;
1518
1519                         if (!strncmp(opt, "name", 4) && td) {
1520                                 ret = add_job(td, td->o.name ?: "fio", 0);
1521                                 if (ret)
1522                                         return 0;
1523                                 td = NULL;
1524                         }
1525                         if (!td) {
1526                                 int is_section = !strncmp(opt, "name", 4);
1527                                 int global = 0;
1528
1529                                 if (!is_section || !strncmp(val, "global", 6))
1530                                         global = 1;
1531
1532                                 if (is_section && skip_this_section(val))
1533                                         continue;
1534
1535                                 td = get_new_job(global, &def_thread, 1);
1536                                 if (!td || ioengine_load(td))
1537                                         return 0;
1538                                 fio_options_set_ioengine_opts(l_opts, td);
1539                         }
1540
1541                         ret = fio_cmd_option_parse(td, opt, val);
1542
1543                         if (!ret && !strcmp(opt, "ioengine")) {
1544                                 free_ioengine(td);
1545                                 if (ioengine_load(td))
1546                                         return 0;
1547                                 fio_options_set_ioengine_opts(l_opts, td);
1548                         }
1549                         break;
1550                 }
1551                 case FIO_GETOPT_IOENGINE: {
1552                         const char *opt = l_opts[lidx].name;
1553                         char *val = optarg;
1554                         opt = l_opts[lidx].name;
1555                         val = optarg;
1556                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1557                         break;
1558                 }
1559                 case 'w':
1560                         warnings_fatal = 1;
1561                         break;
1562                 case 'j':
1563                         max_jobs = atoi(optarg);
1564                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1565                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1566                                 do_exit++;
1567                                 exit_val = 1;
1568                         }
1569                         break;
1570                 case 'S':
1571                         if (nr_clients) {
1572                                 log_err("fio: can't be both client and server\n");
1573                                 do_exit++;
1574                                 exit_val = 1;
1575                                 break;
1576                         }
1577                         if (optarg)
1578                                 fio_server_set_arg(optarg);
1579                         is_backend = 1;
1580                         backend = 1;
1581                         break;
1582                 case 'D':
1583                         pid_file = strdup(optarg);
1584                         break;
1585                 case 'C':
1586                         if (is_backend) {
1587                                 log_err("fio: can't be both client and server\n");
1588                                 do_exit++;
1589                                 exit_val = 1;
1590                                 break;
1591                         }
1592                         if (fio_client_add(optarg, &cur_client)) {
1593                                 log_err("fio: failed adding client %s\n", optarg);
1594                                 do_exit++;
1595                                 exit_val = 1;
1596                                 break;
1597                         }
1598                         /*
1599                          * If the next argument exists and isn't an option,
1600                          * assume it's a job file for this client only.
1601                          */
1602                         while (optind < argc) {
1603                                 if (!strncmp(argv[optind], "--", 2) ||
1604                                     !strncmp(argv[optind], "-", 1))
1605                                         break;
1606
1607                                 fio_client_add_ini_file(cur_client, argv[optind]);
1608                                 optind++;
1609                         }
1610                         break;
1611                 default:
1612                         do_exit++;
1613                         exit_val = 1;
1614                         break;
1615                 }
1616                 if (do_exit)
1617                         break;
1618         }
1619
1620         if (do_exit) {
1621                 if (exit_val && !(is_backend || nr_clients))
1622                         exit(exit_val);
1623         }
1624
1625         if (nr_clients && fio_clients_connect()) {
1626                 do_exit++;
1627                 exit_val = 1;
1628                 return -1;
1629         }
1630
1631         if (is_backend && backend)
1632                 return fio_start_server(pid_file);
1633
1634         if (td) {
1635                 if (!ret)
1636                         ret = add_job(td, td->o.name ?: "fio", 0);
1637         }
1638
1639         while (!ret && optind < argc) {
1640                 ini_idx++;
1641                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1642                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1643                 optind++;
1644         }
1645
1646         return ini_idx;
1647 }
1648
1649 int parse_options(int argc, char *argv[])
1650 {
1651         int job_files, i;
1652
1653         f_out = stdout;
1654         f_err = stderr;
1655
1656         fio_options_fill_optstring();
1657         fio_options_dup_and_init(l_opts);
1658
1659         atexit(free_shm);
1660
1661         if (fill_def_thread())
1662                 return 1;
1663
1664         job_files = parse_cmd_line(argc, argv);
1665
1666         if (job_files > 0) {
1667                 for (i = 0; i < job_files; i++) {
1668                         if (fill_def_thread())
1669                                 return 1;
1670                         if (nr_clients) {
1671                                 if (fio_clients_send_ini(ini_file[i]))
1672                                         return 1;
1673                                 free(ini_file[i]);
1674                         } else if (!is_backend) {
1675                                 if (parse_jobs_ini(ini_file[i], 0, i))
1676                                         return 1;
1677                                 free(ini_file[i]);
1678                         }
1679                 }
1680         } else if (nr_clients) {
1681                 if (fill_def_thread())
1682                         return 1;
1683                 if (fio_clients_send_ini(NULL))
1684                         return 1;
1685         }
1686
1687         free(ini_file);
1688         fio_options_free(&def_thread);
1689
1690         if (!thread_number) {
1691                 if (dump_cmdline)
1692                         return 0;
1693                 if (exec_profile)
1694                         return 0;
1695                 if (is_backend || nr_clients)
1696                         return 0;
1697                 if (did_arg)
1698                         return 0;
1699
1700                 log_err("No jobs(s) defined\n\n");
1701
1702                 if (!did_arg) {
1703                         usage(argv[0]);
1704                         return 1;
1705                 }
1706
1707                 return 0;
1708         }
1709
1710         if (def_thread.o.gtod_offload) {
1711                 fio_gtod_init();
1712                 fio_gtod_offload = 1;
1713                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1714         }
1715
1716         if (output_format == FIO_OUTPUT_NORMAL)
1717                 log_info("%s\n", fio_version_string);
1718
1719         return 0;
1720 }