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/types.h>
  13 #include <sys/stat.h>
  14
  15 #include "fio.h"
  16 #ifndef FIO_NO_HAVE_SHM_H
  17 #include <sys/shm.h>
  18 #endif
  19
  20 #include "parse.h"
  21 #include "smalloc.h"
  22 #include "filehash.h"
  23 #include "verify.h"
  24 #include "profile.h"
  25 #include "server.h"
  26 #include "idletime.h"
  27
  28 #include "lib/getopt.h"
  29 #include "lib/strcasestr.h"
  30
  31 const char fio_version_string[] = FIO_VERSION;
  32
  33 #define FIO_RANDSEED            (0xb1899bedUL)
  34
  35 static char **ini_file;
  36 static int max_jobs = FIO_MAX_JOBS;
  37 static int dump_cmdline;
  38 static int def_timeout;
  39 static int parse_only;
  40
  41 static struct thread_data def_thread;
  42 struct thread_data *threads = NULL;
  43
  44 int exitall_on_terminate = 0;
  45 int output_format = FIO_OUTPUT_NORMAL;
  46 int eta_print = FIO_ETA_AUTO;
  47 int eta_new_line = 0;
  48 FILE *f_out = NULL;
  49 FILE *f_err = NULL;
  50 char **job_sections = NULL;
  51 int nr_job_sections = 0;
  52 char *exec_profile = NULL;
  53 int warnings_fatal = 0;
  54 int terse_version = 3;
  55 int is_backend = 0;
  56 int nr_clients = 0;
  57 int log_syslog = 0;
  58
  59 int write_bw_log = 0;
  60 int read_only = 0;
  61 int status_interval = 0;
  62
  63 static int write_lat_log;
  64
  65 static int prev_group_jobs;
  66
  67 unsigned long fio_debug = 0;
  68 unsigned int fio_debug_jobno = -1;
  69 unsigned int *fio_debug_jobp = NULL;
  70
  71 static char cmd_optstr[256];
  72 static int did_arg;
  73
  74 #define FIO_CLIENT_FLAG         (1 << 16)
  75
  76 /*
  77  * Command line options. These will contain the above, plus a few
  78  * extra that only pertain to fio itself and not jobs.
  79  */
  80 static struct option l_opts[FIO_NR_OPTIONS] = {
  81         {
  82                 .name           = (char *) "output",
  83                 .has_arg        = required_argument,
  84                 .val            = 'o' | FIO_CLIENT_FLAG,
  85         },
  86         {
  87                 .name           = (char *) "timeout",
  88                 .has_arg        = required_argument,
  89                 .val            = 't' | FIO_CLIENT_FLAG,
  90         },
  91         {
  92                 .name           = (char *) "latency-log",
  93                 .has_arg        = required_argument,
  94                 .val            = 'l' | FIO_CLIENT_FLAG,
  95         },
  96         {
  97                 .name           = (char *) "bandwidth-log",
  98                 .has_arg        = required_argument,
  99                 .val            = 'b' | FIO_CLIENT_FLAG,
 100         },
 101         {
 102                 .name           = (char *) "minimal",
 103                 .has_arg        = optional_argument,
 104                 .val            = 'm' | FIO_CLIENT_FLAG,
 105         },
 106         {
 107                 .name           = (char *) "output-format",
 108                 .has_arg        = optional_argument,
 109                 .val            = 'F' | FIO_CLIENT_FLAG,
 110         },
 111         {
 112                 .name           = (char *) "version",
 113                 .has_arg        = no_argument,
 114                 .val            = 'v' | FIO_CLIENT_FLAG,
 115         },
 116         {
 117                 .name           = (char *) "help",
 118                 .has_arg        = no_argument,
 119                 .val            = 'h' | FIO_CLIENT_FLAG,
 120         },
 121         {
 122                 .name           = (char *) "cmdhelp",
 123                 .has_arg        = optional_argument,
 124                 .val            = 'c' | FIO_CLIENT_FLAG,
 125         },
 126         {
 127                 .name           = (char *) "enghelp",
 128                 .has_arg        = optional_argument,
 129                 .val            = 'i' | FIO_CLIENT_FLAG,
 130         },
 131         {
 132                 .name           = (char *) "showcmd",
 133                 .has_arg        = no_argument,
 134                 .val            = 's' | FIO_CLIENT_FLAG,
 135         },
 136         {
 137                 .name           = (char *) "readonly",
 138                 .has_arg        = no_argument,
 139                 .val            = 'r' | FIO_CLIENT_FLAG,
 140         },
 141         {
 142                 .name           = (char *) "eta",
 143                 .has_arg        = required_argument,
 144                 .val            = 'e' | FIO_CLIENT_FLAG,
 145         },
 146         {
 147                 .name           = (char *) "eta-newline",
 148                 .has_arg        = required_argument,
 149                 .val            = 'E' | FIO_CLIENT_FLAG,
 150         },
 151         {
 152                 .name           = (char *) "debug",
 153                 .has_arg        = required_argument,
 154                 .val            = 'd' | FIO_CLIENT_FLAG,
 155         },
 156         {
 157                 .name           = (char *) "parse-only",
 158                 .has_arg        = no_argument,
 159                 .val            = 'P' | FIO_CLIENT_FLAG,
 160         },
 161         {
 162                 .name           = (char *) "section",
 163                 .has_arg        = required_argument,
 164                 .val            = 'x' | FIO_CLIENT_FLAG,
 165         },
 166         {
 167                 .name           = (char *) "alloc-size",
 168                 .has_arg        = required_argument,
 169                 .val            = 'a' | FIO_CLIENT_FLAG,
 170         },
 171         {
 172                 .name           = (char *) "profile",
 173                 .has_arg        = required_argument,
 174                 .val            = 'p' | FIO_CLIENT_FLAG,
 175         },
 176         {
 177                 .name           = (char *) "warnings-fatal",
 178                 .has_arg        = no_argument,
 179                 .val            = 'w' | FIO_CLIENT_FLAG,
 180         },
 181         {
 182                 .name           = (char *) "max-jobs",
 183                 .has_arg        = required_argument,
 184                 .val            = 'j' | FIO_CLIENT_FLAG,
 185         },
 186         {
 187                 .name           = (char *) "terse-version",
 188                 .has_arg        = required_argument,
 189                 .val            = 'V' | FIO_CLIENT_FLAG,
 190         },
 191         {
 192                 .name           = (char *) "server",
 193                 .has_arg        = optional_argument,
 194                 .val            = 'S',
 195         },
 196         {       .name           = (char *) "daemonize",
 197                 .has_arg        = required_argument,
 198                 .val            = 'D',
 199         },
 200         {
 201                 .name           = (char *) "client",
 202                 .has_arg        = required_argument,
 203                 .val            = 'C',
 204         },
 205         {
 206                 .name           = (char *) "cpuclock-test",
 207                 .has_arg        = no_argument,
 208                 .val            = 'T',
 209         },
 210         {
 211                 .name           = (char *) "idle-prof",
 212                 .has_arg        = required_argument,
 213                 .val            = 'I',
 214         },
 215         {
 216                 .name           = (char *) "status-interval",
 217                 .has_arg        = required_argument,
 218                 .val            = 'L',
 219         },
 220         {
 221                 .name           = NULL,
 222         },
 223 };
 224
 225 void free_threads_shm(void)
 226 {
 227         struct shmid_ds sbuf;
 228
 229         if (threads) {
 230                 void *tp = threads;
 231
 232                 threads = NULL;
 233                 shmdt(tp);
 234                 shmctl(shm_id, IPC_RMID, &sbuf);
 235                 shm_id = -1;
 236         }
 237 }
 238
 239 void free_shm(void)
 240 {
 241         if (threads) {
 242                 file_hash_exit();
 243                 flow_exit();
 244                 fio_debug_jobp = NULL;
 245                 free_threads_shm();
 246         }
 247
 248         scleanup();
 249 }
 250
 251 /*
 252  * The thread area is shared between the main process and the job
 253  * threads/processes. So setup a shared memory segment that will hold
 254  * all the job info. We use the end of the region for keeping track of
 255  * open files across jobs, for file sharing.
 256  */
 257 static int setup_thread_area(void)
 258 {
 259         void *hash;
 260
 261         if (threads)
 262                 return 0;
 263
 264         /*
 265          * 1024 is too much on some machines, scale max_jobs if
 266          * we get a failure that looks like too large a shm segment
 267          */
 268         do {
 269                 size_t size = max_jobs * sizeof(struct thread_data);
 270
 271                 size += file_hash_size;
 272                 size += sizeof(unsigned int);
 273
 274                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 275                 if (shm_id != -1)
 276                         break;
 277                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 278                         perror("shmget");
 279                         break;
 280                 }
 281
 282                 max_jobs >>= 1;
 283         } while (max_jobs);
 284
 285         if (shm_id == -1)
 286                 return 1;
 287
 288         threads = shmat(shm_id, NULL, 0);
 289         if (threads == (void *) -1) {
 290                 perror("shmat");
 291                 return 1;
 292         }
 293
 294         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 295         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 296         fio_debug_jobp = (void *) hash + file_hash_size;
 297         *fio_debug_jobp = -1;
 298         file_hash_init(hash);
 299
 300         flow_init();
 301
 302         return 0;
 303 }
 304
 305 /*
 306  * Return a free job structure.
 307  */
 308 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 309                                        int preserve_eo)
 310 {
 311         struct thread_data *td;
 312
 313         if (global)
 314                 return &def_thread;
 315         if (setup_thread_area()) {
 316                 log_err("error: failed to setup shm segment\n");
 317                 return NULL;
 318         }
 319         if (thread_number >= max_jobs) {
 320                 log_err("error: maximum number of jobs (%d) reached.\n",
 321                                 max_jobs);
 322                 return NULL;
 323         }
 324
 325         td = &threads[thread_number++];
 326         *td = *parent;
 327
 328         td->io_ops = NULL;
 329         if (!preserve_eo)
 330                 td->eo = NULL;
 331
 332         td->o.uid = td->o.gid = -1U;
 333
 334         dup_files(td, parent);
 335         fio_options_mem_dupe(td);
 336
 337         profile_add_hooks(td);
 338
 339         td->thread_number = thread_number;
 340
 341         if (!parent || !parent->o.group_reporting)
 342                 stat_number++;
 343
 344         return td;
 345 }
 346
 347 static void put_job(struct thread_data *td)
 348 {
 349         if (td == &def_thread)
 350                 return;
 351
 352         profile_td_exit(td);
 353         flow_exit_job(td);
 354
 355         if (td->error)
 356                 log_info("fio: %s\n", td->verror);
 357
 358         fio_options_free(td);
 359         if (td->io_ops)
 360                 free_ioengine(td);
 361
 362         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 363         thread_number--;
 364 }
 365
 366 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 367 {
 368         unsigned int bs = td->o.min_bs[ddir];
 369
 370         assert(ddir_rw(ddir));
 371
 372         if (td->o.rate[ddir])
 373                 td->rate_bps[ddir] = td->o.rate[ddir];
 374         else
 375                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 376
 377         if (!td->rate_bps[ddir]) {
 378                 log_err("rate lower than supported\n");
 379                 return -1;
 380         }
 381
 382         td->rate_pending_usleep[ddir] = 0;
 383         return 0;
 384 }
 385
 386 static int setup_rate(struct thread_data *td)
 387 {
 388         int ret = 0;
 389
 390         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 391                 ret = __setup_rate(td, DDIR_READ);
 392         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 393                 ret |= __setup_rate(td, DDIR_WRITE);
 394         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 395                 ret |= __setup_rate(td, DDIR_TRIM);
 396
 397         return ret;
 398 }
 399
 400 static int fixed_block_size(struct thread_options *o)
 401 {
 402         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 403                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 404                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 405                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 406                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 407 }
 408
 409 /*
 410  * Lazy way of fixing up options that depend on each other. We could also
 411  * define option callback handlers, but this is easier.
 412  */
 413 static int fixup_options(struct thread_data *td)
 414 {
 415         struct thread_options *o = &td->o;
 416         int ret = 0;
 417
 418 #ifndef FIO_HAVE_PSHARED_MUTEX
 419         if (!o->use_thread) {
 420                 log_info("fio: this platform does not support process shared"
 421                          " mutexes, forcing use of threads. Use the 'thread'"
 422                          " option to get rid of this warning.\n");
 423                 o->use_thread = 1;
 424                 ret = warnings_fatal;
 425         }
 426 #endif
 427
 428         if (o->write_iolog_file && o->read_iolog_file) {
 429                 log_err("fio: read iolog overrides write_iolog\n");
 430                 free(o->write_iolog_file);
 431                 o->write_iolog_file = NULL;
 432                 ret = warnings_fatal;
 433         }
 434
 435         /*
 436          * only really works with 1 file
 437          */
 438         if (o->zone_size && o->open_files > 1)
 439                 o->zone_size = 0;
 440
 441         /*
 442          * If zone_range isn't specified, backward compatibility dictates it
 443          * should be made equal to zone_size.
 444          */
 445         if (o->zone_size && !o->zone_range)
 446                 o->zone_range = o->zone_size;
 447
 448         /*
 449          * Reads can do overwrites, we always need to pre-create the file
 450          */
 451         if (td_read(td) || td_rw(td))
 452                 o->overwrite = 1;
 453
 454         if (!o->min_bs[DDIR_READ])
 455                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 456         if (!o->max_bs[DDIR_READ])
 457                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 458         if (!o->min_bs[DDIR_WRITE])
 459                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 460         if (!o->max_bs[DDIR_WRITE])
 461                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 462         if (!o->min_bs[DDIR_TRIM])
 463                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 464         if (!o->max_bs[DDIR_TRIM])
 465                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 466
 467
 468         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 469         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 470
 471         /*
 472          * For random IO, allow blockalign offset other than min_bs.
 473          */
 474         if (!o->ba[DDIR_READ] || !td_random(td))
 475                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 476         if (!o->ba[DDIR_WRITE] || !td_random(td))
 477                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 478         if (!o->ba[DDIR_TRIM] || !td_random(td))
 479                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 480
 481         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 482             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 483             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 484             !o->norandommap) {
 485                 log_err("fio: Any use of blockalign= turns off randommap\n");
 486                 o->norandommap = 1;
 487                 ret = warnings_fatal;
 488         }
 489
 490         if (!o->file_size_high)
 491                 o->file_size_high = o->file_size_low;
 492
 493         if (o->norandommap && o->verify != VERIFY_NONE
 494             && !fixed_block_size(o))  {
 495                 log_err("fio: norandommap given for variable block sizes, "
 496                         "verify disabled\n");
 497                 o->verify = VERIFY_NONE;
 498                 ret = warnings_fatal;
 499         }
 500         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 501                 log_err("fio: bs_unaligned may not work with raw io\n");
 502
 503         /*
 504          * thinktime_spin must be less than thinktime
 505          */
 506         if (o->thinktime_spin > o->thinktime)
 507                 o->thinktime_spin = o->thinktime;
 508
 509         /*
 510          * The low water mark cannot be bigger than the iodepth
 511          */
 512         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 513                 o->iodepth_low = o->iodepth;
 514
 515         /*
 516          * If batch number isn't set, default to the same as iodepth
 517          */
 518         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 519                 o->iodepth_batch = o->iodepth;
 520
 521         if (o->nr_files > td->files_index)
 522                 o->nr_files = td->files_index;
 523
 524         if (o->open_files > o->nr_files || !o->open_files)
 525                 o->open_files = o->nr_files;
 526
 527         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 528             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 529             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 530             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 531                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 532                 ret = 1;
 533         }
 534         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 535             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 536             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 537             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 538             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 539             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 540                 log_err("fio: minimum rate exceeds rate\n");
 541                 ret = 1;
 542         }
 543
 544         if (!o->timeout && o->time_based) {
 545                 log_err("fio: time_based requires a runtime/timeout setting\n");
 546                 o->time_based = 0;
 547                 ret = warnings_fatal;
 548         }
 549
 550         if (o->fill_device && !o->size)
 551                 o->size = -1ULL;
 552
 553         if (o->verify != VERIFY_NONE) {
 554                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 555                         log_info("Multiple writers may overwrite blocks that "
 556                                 "belong to other jobs. This can cause "
 557                                 "verification failures.\n");
 558                         ret = warnings_fatal;
 559                 }
 560
 561                 o->refill_buffers = 1;
 562                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 563                     !o->verify_interval)
 564                         o->verify_interval = o->min_bs[DDIR_WRITE];
 565         }
 566
 567         if (o->pre_read) {
 568                 o->invalidate_cache = 0;
 569                 if (td->io_ops->flags & FIO_PIPEIO) {
 570                         log_info("fio: cannot pre-read files with an IO engine"
 571                                  " that isn't seekable. Pre-read disabled.\n");
 572                         ret = warnings_fatal;
 573                 }
 574         }
 575
 576         if (!o->unit_base) {
 577                 if (td->io_ops->flags & FIO_BIT_BASED)
 578                         o->unit_base = 1;
 579                 else
 580                         o->unit_base = 8;
 581         }
 582
 583 #ifndef CONFIG_FDATASYNC
 584         if (o->fdatasync_blocks) {
 585                 log_info("fio: this platform does not support fdatasync()"
 586                          " falling back to using fsync().  Use the 'fsync'"
 587                          " option instead of 'fdatasync' to get rid of"
 588                          " this warning\n");
 589                 o->fsync_blocks = o->fdatasync_blocks;
 590                 o->fdatasync_blocks = 0;
 591                 ret = warnings_fatal;
 592         }
 593 #endif
 594
 595 #ifdef WIN32
 596         /*
 597          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 598          * so fail if we're passed those flags
 599          */
 600         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 601                 log_err("fio: Windows does not support direct or non-buffered io with"
 602                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 603                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 604                 ret = 1;
 605         }
 606 #endif
 607
 608         /*
 609          * For fully compressible data, just zero them at init time.
 610          * It's faster than repeatedly filling it.
 611          */
 612         if (td->o.compress_percentage == 100) {
 613                 td->o.zero_buffers = 1;
 614                 td->o.compress_percentage = 0;
 615         }
 616
 617         /*
 618          * Using a non-uniform random distribution excludes usage of
 619          * a random map
 620          */
 621         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
 622                 td->o.norandommap = 1;
 623
 624         /*
 625          * If size is set but less than the min block size, complain
 626          */
 627         if (o->size && o->size < td_min_bs(td)) {
 628                 log_err("fio: size too small, must be larger than the IO size: %llu\n", (unsigned long long) o->size);
 629                 ret = 1;
 630         }
 631
 632         return ret;
 633 }
 634
 635 /*
 636  * This function leaks the buffer
 637  */
 638 char *fio_uint_to_kmg(unsigned int val)
 639 {
 640         char *buf = malloc(32);
 641         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 642         char *p = post;
 643
 644         do {
 645                 if (val & 1023)
 646                         break;
 647
 648                 val >>= 10;
 649                 p++;
 650         } while (*p);
 651
 652         snprintf(buf, 32, "%u%c", val, *p);
 653         return buf;
 654 }
 655
 656 /* External engines are specified by "external:name.o") */
 657 static const char *get_engine_name(const char *str)
 658 {
 659         char *p = strstr(str, ":");
 660
 661         if (!p)
 662                 return str;
 663
 664         p++;
 665         strip_blank_front(&p);
 666         strip_blank_end(p);
 667         return p;
 668 }
 669
 670 static int exists_and_not_file(const char *filename)
 671 {
 672         struct stat sb;
 673
 674         if (lstat(filename, &sb) == -1)
 675                 return 0;
 676
 677         /* \\.\ is the device namespace in Windows, where every file
 678          * is a device node */
 679         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 680                 return 0;
 681
 682         return 1;
 683 }
 684
 685 static void td_fill_rand_seeds_os(struct thread_data *td)
 686 {
 687         os_random_seed(td->rand_seeds[FIO_RAND_BS_OFF], &td->bsrange_state);
 688         os_random_seed(td->rand_seeds[FIO_RAND_VER_OFF], &td->verify_state);
 689         os_random_seed(td->rand_seeds[FIO_RAND_MIX_OFF], &td->rwmix_state);
 690
 691         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 692                 os_random_seed(td->rand_seeds[FIO_RAND_FILE_OFF], &td->next_file_state);
 693
 694         os_random_seed(td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], &td->file_size_state);
 695         os_random_seed(td->rand_seeds[FIO_RAND_TRIM_OFF], &td->trim_state);
 696
 697         if (!td_random(td))
 698                 return;
 699
 700         if (td->o.rand_repeatable)
 701                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 702
 703         os_random_seed(td->rand_seeds[FIO_RAND_BLOCK_OFF], &td->random_state);
 704
 705         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], &td->seq_rand_state[DDIR_READ]);
 706         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF], &td->seq_rand_state[DDIR_WRITE]);
 707         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF], &td->seq_rand_state[DDIR_TRIM]);
 708 }
 709
 710 static void td_fill_rand_seeds_internal(struct thread_data *td)
 711 {
 712         init_rand_seed(&td->__bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
 713         init_rand_seed(&td->__verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
 714         init_rand_seed(&td->__rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
 715
 716         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 717                 init_rand_seed(&td->__next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
 718
 719         init_rand_seed(&td->__file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
 720         init_rand_seed(&td->__trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
 721
 722         if (!td_random(td))
 723                 return;
 724
 725         if (td->o.rand_repeatable)
 726                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 727
 728         init_rand_seed(&td->__random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
 729         init_rand_seed(&td->__seq_rand_state[DDIR_READ], td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF]);
 730         init_rand_seed(&td->__seq_rand_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF]);
 731         init_rand_seed(&td->__seq_rand_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF]);
 732 }
 733
 734 void td_fill_rand_seeds(struct thread_data *td)
 735 {
 736         if (td->o.use_os_rand)
 737                 td_fill_rand_seeds_os(td);
 738         else
 739                 td_fill_rand_seeds_internal(td);
 740
 741         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
 742 }
 743
 744 /*
 745  * Initializes the ioengine configured for a job, if it has not been done so
 746  * already.
 747  */
 748 int ioengine_load(struct thread_data *td)
 749 {
 750         const char *engine;
 751
 752         /*
 753          * Engine has already been loaded.
 754          */
 755         if (td->io_ops)
 756                 return 0;
 757         if (!td->o.ioengine) {
 758                 log_err("fio: internal fault, no IO engine specified\n");
 759                 return 1;
 760         }
 761
 762         engine = get_engine_name(td->o.ioengine);
 763         td->io_ops = load_ioengine(td, engine);
 764         if (!td->io_ops) {
 765                 log_err("fio: failed to load engine %s\n", engine);
 766                 return 1;
 767         }
 768
 769         if (td->io_ops->option_struct_size && td->io_ops->options) {
 770                 /*
 771                  * In cases where td->eo is set, clone it for a child thread.
 772                  * This requires that the parent thread has the same ioengine,
 773                  * but that requirement must be enforced by the code which
 774                  * cloned the thread.
 775                  */
 776                 void *origeo = td->eo;
 777                 /*
 778                  * Otherwise use the default thread options.
 779                  */
 780                 if (!origeo && td != &def_thread && def_thread.eo &&
 781                     def_thread.io_ops->options == td->io_ops->options)
 782                         origeo = def_thread.eo;
 783
 784                 options_init(td->io_ops->options);
 785                 td->eo = malloc(td->io_ops->option_struct_size);
 786                 /*
 787                  * Use the default thread as an option template if this uses the
 788                  * same options structure and there are non-default options
 789                  * used.
 790                  */
 791                 if (origeo) {
 792                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 793                         options_mem_dupe(td->eo, td->io_ops->options);
 794                 } else {
 795                         memset(td->eo, 0, td->io_ops->option_struct_size);
 796                         fill_default_options(td->eo, td->io_ops->options);
 797                 }
 798                 *(struct thread_data **)td->eo = td;
 799         }
 800
 801         return 0;
 802 }
 803
 804 static void init_flags(struct thread_data *td)
 805 {
 806         struct thread_options *o = &td->o;
 807
 808         if (o->verify_backlog)
 809                 td->flags |= TD_F_VER_BACKLOG;
 810         if (o->trim_backlog)
 811                 td->flags |= TD_F_TRIM_BACKLOG;
 812         if (o->read_iolog_file)
 813                 td->flags |= TD_F_READ_IOLOG;
 814         if (o->refill_buffers)
 815                 td->flags |= TD_F_REFILL_BUFFERS;
 816         if (o->scramble_buffers)
 817                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
 818         if (o->verify != VERIFY_NONE)
 819                 td->flags |= TD_F_VER_NONE;
 820 }
 821
 822 static int setup_random_seeds(struct thread_data *td)
 823 {
 824         unsigned long seed;
 825         unsigned int i;
 826
 827         if (!td->o.rand_repeatable)
 828                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
 829
 830         for (seed = 0x89, i = 0; i < 4; i++)
 831                 seed *= 0x9e370001UL;
 832
 833         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
 834                 td->rand_seeds[i] = seed;
 835                 seed *= 0x9e370001UL;
 836         }
 837
 838         td_fill_rand_seeds(td);
 839         return 0;
 840 }
 841
 842 enum {
 843         FPRE_NONE = 0,
 844         FPRE_JOBNAME,
 845         FPRE_JOBNUM,
 846         FPRE_FILENUM
 847 };
 848
 849 static struct fpre_keyword {
 850         const char *keyword;
 851         size_t strlen;
 852         int key;
 853 } fpre_keywords[] = {
 854         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
 855         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
 856         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
 857         { .keyword = NULL, },
 858         };
 859
 860 static char *make_filename(char *buf, struct thread_options *o,
 861                            const char *jobname, int jobnum, int filenum)
 862 {
 863         struct fpre_keyword *f;
 864         char copy[PATH_MAX];
 865
 866         if (!o->filename_format || !strlen(o->filename_format)) {
 867                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
 868                 return NULL;
 869         }
 870
 871         for (f = &fpre_keywords[0]; f->keyword; f++)
 872                 f->strlen = strlen(f->keyword);
 873
 874         strcpy(buf, o->filename_format);
 875         memset(copy, 0, sizeof(copy));
 876         for (f = &fpre_keywords[0]; f->keyword; f++) {
 877                 do {
 878                         size_t pre_len, post_start = 0;
 879                         char *str, *dst = copy;
 880
 881                         str = strcasestr(buf, f->keyword);
 882                         if (!str)
 883                                 break;
 884
 885                         pre_len = str - buf;
 886                         if (strlen(str) != f->strlen)
 887                                 post_start = pre_len + f->strlen;
 888
 889                         if (pre_len) {
 890                                 strncpy(dst, buf, pre_len);
 891                                 dst += pre_len;
 892                         }
 893
 894                         switch (f->key) {
 895                         case FPRE_JOBNAME:
 896                                 dst += sprintf(dst, "%s", jobname);
 897                                 break;
 898                         case FPRE_JOBNUM:
 899                                 dst += sprintf(dst, "%d", jobnum);
 900                                 break;
 901                         case FPRE_FILENUM:
 902                                 dst += sprintf(dst, "%d", filenum);
 903                                 break;
 904                         default:
 905                                 assert(0);
 906                                 break;
 907                         }
 908
 909                         if (post_start)
 910                                 strcpy(dst, buf + post_start);
 911
 912                         strcpy(buf, copy);
 913                 } while (1);
 914         }
 915
 916         return buf;
 917 }
 918
 919 int parse_dryrun(void)
 920 {
 921         return dump_cmdline || parse_only;
 922 }
 923
 924 /*
 925  * Adds a job to the list of things todo. Sanitizes the various options
 926  * to make sure we don't have conflicts, and initializes various
 927  * members of td.
 928  */
 929 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
 930                    int recursed, int client_type)
 931 {
 932         unsigned int i;
 933         char fname[PATH_MAX];
 934         int numjobs, file_alloced;
 935         struct thread_options *o = &td->o;
 936
 937         /*
 938          * the def_thread is just for options, it's not a real job
 939          */
 940         if (td == &def_thread)
 941                 return 0;
 942
 943         init_flags(td);
 944
 945         /*
 946          * if we are just dumping the output command line, don't add the job
 947          */
 948         if (parse_dryrun()) {
 949                 put_job(td);
 950                 return 0;
 951         }
 952
 953         td->client_type = client_type;
 954
 955         if (profile_td_init(td))
 956                 goto err;
 957
 958         if (ioengine_load(td))
 959                 goto err;
 960
 961         if (o->odirect)
 962                 td->io_ops->flags |= FIO_RAWIO;
 963
 964         file_alloced = 0;
 965         if (!o->filename && !td->files_index && !o->read_iolog_file) {
 966                 file_alloced = 1;
 967
 968                 if (o->nr_files == 1 && exists_and_not_file(jobname))
 969                         add_file(td, jobname);
 970                 else {
 971                         for (i = 0; i < o->nr_files; i++)
 972                                 add_file(td, make_filename(fname, o, jobname, td->thread_number, i));
 973                 }
 974         }
 975
 976         if (fixup_options(td))
 977                 goto err;
 978
 979         flow_init_job(td);
 980
 981         /*
 982          * IO engines only need this for option callbacks, and the address may
 983          * change in subprocesses.
 984          */
 985         if (td->eo)
 986                 *(struct thread_data **)td->eo = NULL;
 987
 988         if (td->io_ops->flags & FIO_DISKLESSIO) {
 989                 struct fio_file *f;
 990
 991                 for_each_file(td, f, i)
 992                         f->real_file_size = -1ULL;
 993         }
 994
 995         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
 996
 997         td->ts.clat_percentiles = o->clat_percentiles;
 998         td->ts.percentile_precision = o->percentile_precision;
 999         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1000
1001         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1002                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1003                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1004                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1005                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1006         }
1007         td->ddir_seq_nr = o->ddir_seq_nr;
1008
1009         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1010                 prev_group_jobs = 0;
1011                 groupid++;
1012         }
1013
1014         td->groupid = groupid;
1015         prev_group_jobs++;
1016
1017         if (setup_random_seeds(td)) {
1018                 td_verror(td, errno, "init_random_state");
1019                 goto err;
1020         }
1021
1022         if (setup_rate(td))
1023                 goto err;
1024
1025         if (o->lat_log_file) {
1026                 setup_log(&td->lat_log, o->log_avg_msec, IO_LOG_TYPE_LAT);
1027                 setup_log(&td->slat_log, o->log_avg_msec, IO_LOG_TYPE_SLAT);
1028                 setup_log(&td->clat_log, o->log_avg_msec, IO_LOG_TYPE_CLAT);
1029         }
1030         if (o->bw_log_file)
1031                 setup_log(&td->bw_log, o->log_avg_msec, IO_LOG_TYPE_BW);
1032         if (o->iops_log_file)
1033                 setup_log(&td->iops_log, o->log_avg_msec, IO_LOG_TYPE_IOPS);
1034
1035         if (!o->name)
1036                 o->name = strdup(jobname);
1037
1038         if (output_format == FIO_OUTPUT_NORMAL) {
1039                 if (!job_add_num) {
1040                         if (is_backend && !recursed)
1041                                 fio_server_send_add_job(td);
1042
1043                         if (!(td->io_ops->flags & FIO_NOIO)) {
1044                                 char *c1, *c2, *c3, *c4;
1045                                 char *c5 = NULL, *c6 = NULL;
1046
1047                                 c1 = fio_uint_to_kmg(o->min_bs[DDIR_READ]);
1048                                 c2 = fio_uint_to_kmg(o->max_bs[DDIR_READ]);
1049                                 c3 = fio_uint_to_kmg(o->min_bs[DDIR_WRITE]);
1050                                 c4 = fio_uint_to_kmg(o->max_bs[DDIR_WRITE]);
1051
1052                                 if (!o->bs_is_seq_rand) {
1053                                         c5 = fio_uint_to_kmg(o->min_bs[DDIR_TRIM]);
1054                                         c6 = fio_uint_to_kmg(o->max_bs[DDIR_TRIM]);
1055                                 }
1056
1057                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1058                                                         td->groupid,
1059                                                         ddir_str(o->td_ddir));
1060
1061                                 if (o->bs_is_seq_rand)
1062                                         log_info("bs(seq/rand)=%s-%s/%s-%s, ",
1063                                                         c1, c2, c3, c4);
1064                                 else
1065                                         log_info("bs=%s-%s/%s-%s/%s-%s, ",
1066                                                         c1, c2, c3, c4, c5, c6);
1067
1068                                 log_info("ioengine=%s, iodepth=%u\n",
1069                                                 td->io_ops->name, o->iodepth);
1070
1071                                 free(c1);
1072                                 free(c2);
1073                                 free(c3);
1074                                 free(c4);
1075                                 free(c5);
1076                                 free(c6);
1077                         }
1078                 } else if (job_add_num == 1)
1079                         log_info("...\n");
1080         }
1081
1082         /*
1083          * recurse add identical jobs, clear numjobs and stonewall options
1084          * as they don't apply to sub-jobs
1085          */
1086         numjobs = o->numjobs;
1087         while (--numjobs) {
1088                 struct thread_data *td_new = get_new_job(0, td, 1);
1089
1090                 if (!td_new)
1091                         goto err;
1092
1093                 td_new->o.numjobs = 1;
1094                 td_new->o.stonewall = 0;
1095                 td_new->o.new_group = 0;
1096
1097                 if (file_alloced) {
1098                         td_new->o.filename = NULL;
1099                         td_new->files_index = 0;
1100                         td_new->files_size = 0;
1101                         td_new->files = NULL;
1102                 }
1103
1104                 job_add_num = numjobs - 1;
1105
1106                 if (add_job(td_new, jobname, job_add_num, 1, client_type))
1107                         goto err;
1108         }
1109
1110         return 0;
1111 err:
1112         put_job(td);
1113         return -1;
1114 }
1115
1116 /*
1117  * Parse as if 'o' was a command line
1118  */
1119 void add_job_opts(const char **o, int client_type)
1120 {
1121         struct thread_data *td, *td_parent;
1122         int i, in_global = 1;
1123         char jobname[32];
1124
1125         i = 0;
1126         td_parent = td = NULL;
1127         while (o[i]) {
1128                 if (!strncmp(o[i], "name", 4)) {
1129                         in_global = 0;
1130                         if (td)
1131                                 add_job(td, jobname, 0, 0, client_type);
1132                         td = NULL;
1133                         sprintf(jobname, "%s", o[i] + 5);
1134                 }
1135                 if (in_global && !td_parent)
1136                         td_parent = get_new_job(1, &def_thread, 0);
1137                 else if (!in_global && !td) {
1138                         if (!td_parent)
1139                                 td_parent = &def_thread;
1140                         td = get_new_job(0, td_parent, 0);
1141                 }
1142                 if (in_global)
1143                         fio_options_parse(td_parent, (char **) &o[i], 1);
1144                 else
1145                         fio_options_parse(td, (char **) &o[i], 1);
1146                 i++;
1147         }
1148
1149         if (td)
1150                 add_job(td, jobname, 0, 0, client_type);
1151 }
1152
1153 static int skip_this_section(const char *name)
1154 {
1155         int i;
1156
1157         if (!nr_job_sections)
1158                 return 0;
1159         if (!strncmp(name, "global", 6))
1160                 return 0;
1161
1162         for (i = 0; i < nr_job_sections; i++)
1163                 if (!strcmp(job_sections[i], name))
1164                         return 0;
1165
1166         return 1;
1167 }
1168
1169 static int is_empty_or_comment(char *line)
1170 {
1171         unsigned int i;
1172
1173         for (i = 0; i < strlen(line); i++) {
1174                 if (line[i] == ';')
1175                         return 1;
1176                 if (line[i] == '#')
1177                         return 1;
1178                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1179                         return 0;
1180         }
1181
1182         return 1;
1183 }
1184
1185 /*
1186  * This is our [ini] type file parser.
1187  */
1188 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1189 {
1190         unsigned int global;
1191         struct thread_data *td;
1192         char *string, *name;
1193         FILE *f;
1194         char *p;
1195         int ret = 0, stonewall;
1196         int first_sect = 1;
1197         int skip_fgets = 0;
1198         int inside_skip = 0;
1199         char **opts;
1200         int i, alloc_opts, num_opts;
1201
1202         if (is_buf)
1203                 f = NULL;
1204         else {
1205                 if (!strcmp(file, "-"))
1206                         f = stdin;
1207                 else
1208                         f = fopen(file, "r");
1209
1210                 if (!f) {
1211                         perror("fopen job file");
1212                         return 1;
1213                 }
1214         }
1215
1216         string = malloc(4096);
1217
1218         /*
1219          * it's really 256 + small bit, 280 should suffice
1220          */
1221         name = malloc(280);
1222         memset(name, 0, 280);
1223
1224         alloc_opts = 8;
1225         opts = malloc(sizeof(char *) * alloc_opts);
1226         num_opts = 0;
1227
1228         stonewall = stonewall_flag;
1229         do {
1230                 /*
1231                  * if skip_fgets is set, we already have loaded a line we
1232                  * haven't handled.
1233                  */
1234                 if (!skip_fgets) {
1235                         if (is_buf)
1236                                 p = strsep(&file, "\n");
1237                         else
1238                                 p = fgets(string, 4096, f);
1239                         if (!p)
1240                                 break;
1241                 }
1242
1243                 skip_fgets = 0;
1244                 strip_blank_front(&p);
1245                 strip_blank_end(p);
1246
1247                 if (is_empty_or_comment(p))
1248                         continue;
1249                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1250                         if (inside_skip)
1251                                 continue;
1252                         log_err("fio: option <%s> outside of [] job section\n",
1253                                                                         p);
1254                         break;
1255                 }
1256
1257                 name[strlen(name) - 1] = '\0';
1258
1259                 if (skip_this_section(name)) {
1260                         inside_skip = 1;
1261                         continue;
1262                 } else
1263                         inside_skip = 0;
1264
1265                 global = !strncmp(name, "global", 6);
1266
1267                 if (dump_cmdline) {
1268                         if (first_sect)
1269                                 log_info("fio ");
1270                         if (!global)
1271                                 log_info("--name=%s ", name);
1272                         first_sect = 0;
1273                 }
1274
1275                 td = get_new_job(global, &def_thread, 0);
1276                 if (!td) {
1277                         ret = 1;
1278                         break;
1279                 }
1280
1281                 /*
1282                  * Seperate multiple job files by a stonewall
1283                  */
1284                 if (!global && stonewall) {
1285                         td->o.stonewall = stonewall;
1286                         stonewall = 0;
1287                 }
1288
1289                 num_opts = 0;
1290                 memset(opts, 0, alloc_opts * sizeof(char *));
1291
1292                 while (1) {
1293                         if (is_buf)
1294                                 p = strsep(&file, "\n");
1295                         else
1296                                 p = fgets(string, 4096, f);
1297                         if (!p)
1298                                 break;
1299
1300                         if (is_empty_or_comment(p))
1301                                 continue;
1302
1303                         strip_blank_front(&p);
1304
1305                         /*
1306                          * new section, break out and make sure we don't
1307                          * fgets() a new line at the top.
1308                          */
1309                         if (p[0] == '[') {
1310                                 skip_fgets = 1;
1311                                 break;
1312                         }
1313
1314                         strip_blank_end(p);
1315
1316                         if (num_opts == alloc_opts) {
1317                                 alloc_opts <<= 1;
1318                                 opts = realloc(opts,
1319                                                 alloc_opts * sizeof(char *));
1320                         }
1321
1322                         opts[num_opts] = strdup(p);
1323                         num_opts++;
1324                 }
1325
1326                 ret = fio_options_parse(td, opts, num_opts);
1327                 if (!ret) {
1328                         if (dump_cmdline)
1329                                 for (i = 0; i < num_opts; i++)
1330                                         log_info("--%s ", opts[i]);
1331
1332                         ret = add_job(td, name, 0, 0, type);
1333                 } else {
1334                         log_err("fio: job %s dropped\n", name);
1335                         put_job(td);
1336                 }
1337
1338                 for (i = 0; i < num_opts; i++)
1339                         free(opts[i]);
1340                 num_opts = 0;
1341         } while (!ret);
1342
1343         if (dump_cmdline)
1344                 log_info("\n");
1345
1346         i = 0;
1347         while (i < nr_job_sections) {
1348                 free(job_sections[i]);
1349                 i++;
1350         }
1351
1352         for (i = 0; i < num_opts; i++)
1353                 free(opts[i]);
1354
1355         free(string);
1356         free(name);
1357         free(opts);
1358         if (!is_buf && f != stdin)
1359                 fclose(f);
1360         return ret;
1361 }
1362
1363 static int fill_def_thread(void)
1364 {
1365         memset(&def_thread, 0, sizeof(def_thread));
1366
1367         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1368         def_thread.o.timeout = def_timeout;
1369         def_thread.o.error_dump = 1;
1370         /*
1371          * fill default options
1372          */
1373         fio_fill_default_options(&def_thread);
1374         return 0;
1375 }
1376
1377 static void usage(const char *name)
1378 {
1379         printf("%s\n", fio_version_string);
1380         printf("%s [options] [job options] <job file(s)>\n", name);
1381         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1382                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1383                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1384         printf("  --parse-only\t\tParse options only, don't start any IO\n");
1385         printf("  --output\t\tWrite output to file\n");
1386         printf("  --runtime\t\tRuntime in seconds\n");
1387         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1388         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1389         printf("  --minimal\t\tMinimal (terse) output\n");
1390         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1391         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1392         printf("  --version\t\tPrint version info and exit\n");
1393         printf("  --help\t\tPrint this page\n");
1394         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1395         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1396                 " them\n");
1397         printf("  --enghelp=engine\tPrint ioengine help, or list"
1398                 " available ioengines\n");
1399         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1400                 " cmd\n");
1401         printf("  --showcmd\t\tTurn a job file into command line options\n");
1402         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1403         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1404         printf("  --eta-newline=time\tForce a new line for every 'time'");
1405         printf(" period passed\n");
1406         printf("  --status-interval=t\tForce full status dump every");
1407         printf(" 't' period passed\n");
1408         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1409                 " writes\n");
1410         printf("  --section=name\tOnly run specified section in job file\n");
1411         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1412                 " (def 1024)\n");
1413         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1414         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1415         printf("  --server=args\t\tStart a backend fio server\n");
1416         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1417         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1418         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
1419                 "\t\t\t(option=system,percpu) or run unit work\n"
1420                 "\t\t\tcalibration only (option=calibrate)\n");
1421         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1422         printf("\n                   Jens Axboe <jaxboe@fusionio.com>\n");
1423 }
1424
1425 #ifdef FIO_INC_DEBUG
1426 struct debug_level debug_levels[] = {
1427         { .name = "process",
1428           .help = "Process creation/exit logging",
1429           .shift = FD_PROCESS,
1430         },
1431         { .name = "file",
1432           .help = "File related action logging",
1433           .shift = FD_FILE,
1434         },
1435         { .name = "io",
1436           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1437           .shift = FD_IO,
1438         },
1439         { .name = "mem",
1440           .help = "Memory allocation/freeing logging",
1441           .shift = FD_MEM,
1442         },
1443         { .name = "blktrace",
1444           .help = "blktrace action logging",
1445           .shift = FD_BLKTRACE,
1446         },
1447         { .name = "verify",
1448           .help = "IO verification action logging",
1449           .shift = FD_VERIFY,
1450         },
1451         { .name = "random",
1452           .help = "Random generation logging",
1453           .shift = FD_RANDOM,
1454         },
1455         { .name = "parse",
1456           .help = "Parser logging",
1457           .shift = FD_PARSE,
1458         },
1459         { .name = "diskutil",
1460           .help = "Disk utility logging actions",
1461           .shift = FD_DISKUTIL,
1462         },
1463         { .name = "job",
1464           .help = "Logging related to creating/destroying jobs",
1465           .shift = FD_JOB,
1466         },
1467         { .name = "mutex",
1468           .help = "Mutex logging",
1469           .shift = FD_MUTEX
1470         },
1471         { .name = "profile",
1472           .help = "Logging related to profiles",
1473           .shift = FD_PROFILE,
1474         },
1475         { .name = "time",
1476           .help = "Logging related to time keeping functions",
1477           .shift = FD_TIME,
1478         },
1479         { .name = "net",
1480           .help = "Network logging",
1481           .shift = FD_NET,
1482         },
1483         { .name = NULL, },
1484 };
1485
1486 static int set_debug(const char *string)
1487 {
1488         struct debug_level *dl;
1489         char *p = (char *) string;
1490         char *opt;
1491         int i;
1492
1493         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1494                 log_info("fio: dumping debug options:");
1495                 for (i = 0; debug_levels[i].name; i++) {
1496                         dl = &debug_levels[i];
1497                         log_info("%s,", dl->name);
1498                 }
1499                 log_info("all\n");
1500                 return 1;
1501         }
1502
1503         while ((opt = strsep(&p, ",")) != NULL) {
1504                 int found = 0;
1505
1506                 if (!strncmp(opt, "all", 3)) {
1507                         log_info("fio: set all debug options\n");
1508                         fio_debug = ~0UL;
1509                         continue;
1510                 }
1511
1512                 for (i = 0; debug_levels[i].name; i++) {
1513                         dl = &debug_levels[i];
1514                         found = !strncmp(opt, dl->name, strlen(dl->name));
1515                         if (!found)
1516                                 continue;
1517
1518                         if (dl->shift == FD_JOB) {
1519                                 opt = strchr(opt, ':');
1520                                 if (!opt) {
1521                                         log_err("fio: missing job number\n");
1522                                         break;
1523                                 }
1524                                 opt++;
1525                                 fio_debug_jobno = atoi(opt);
1526                                 log_info("fio: set debug jobno %d\n",
1527                                                         fio_debug_jobno);
1528                         } else {
1529                                 log_info("fio: set debug option %s\n", opt);
1530                                 fio_debug |= (1UL << dl->shift);
1531                         }
1532                         break;
1533                 }
1534
1535                 if (!found)
1536                         log_err("fio: debug mask %s not found\n", opt);
1537         }
1538         return 0;
1539 }
1540 #else
1541 static int set_debug(const char *string)
1542 {
1543         log_err("fio: debug tracing not included in build\n");
1544         return 1;
1545 }
1546 #endif
1547
1548 static void fio_options_fill_optstring(void)
1549 {
1550         char *ostr = cmd_optstr;
1551         int i, c;
1552
1553         c = i = 0;
1554         while (l_opts[i].name) {
1555                 ostr[c++] = l_opts[i].val;
1556                 if (l_opts[i].has_arg == required_argument)
1557                         ostr[c++] = ':';
1558                 else if (l_opts[i].has_arg == optional_argument) {
1559                         ostr[c++] = ':';
1560                         ostr[c++] = ':';
1561                 }
1562                 i++;
1563         }
1564         ostr[c] = '\0';
1565 }
1566
1567 static int client_flag_set(char c)
1568 {
1569         int i;
1570
1571         i = 0;
1572         while (l_opts[i].name) {
1573                 int val = l_opts[i].val;
1574
1575                 if (c == (val & 0xff))
1576                         return (val & FIO_CLIENT_FLAG);
1577
1578                 i++;
1579         }
1580
1581         return 0;
1582 }
1583
1584 void parse_cmd_client(void *client, char *opt)
1585 {
1586         fio_client_add_cmd_option(client, opt);
1587 }
1588
1589 int parse_cmd_line(int argc, char *argv[], int client_type)
1590 {
1591         struct thread_data *td = NULL;
1592         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1593         char *ostr = cmd_optstr;
1594         void *pid_file = NULL;
1595         void *cur_client = NULL;
1596         int backend = 0;
1597
1598         /*
1599          * Reset optind handling, since we may call this multiple times
1600          * for the backend.
1601          */
1602         optind = 1;
1603
1604         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1605                 did_arg = 1;
1606
1607                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1608                         parse_cmd_client(cur_client, argv[optind - 1]);
1609                         c &= ~FIO_CLIENT_FLAG;
1610                 }
1611
1612                 switch (c) {
1613                 case 'a':
1614                         smalloc_pool_size = atoi(optarg);
1615                         break;
1616                 case 't':
1617                         def_timeout = atoi(optarg);
1618                         break;
1619                 case 'l':
1620                         write_lat_log = 1;
1621                         break;
1622                 case 'b':
1623                         write_bw_log = 1;
1624                         break;
1625                 case 'o':
1626                         f_out = fopen(optarg, "w+");
1627                         if (!f_out) {
1628                                 perror("fopen output");
1629                                 exit(1);
1630                         }
1631                         f_err = f_out;
1632                         break;
1633                 case 'm':
1634                         output_format = FIO_OUTPUT_TERSE;
1635                         break;
1636                 case 'F':
1637                         if (!strcmp(optarg, "minimal") ||
1638                             !strcmp(optarg, "terse") ||
1639                             !strcmp(optarg, "csv"))
1640                                 output_format = FIO_OUTPUT_TERSE;
1641                         else if (!strcmp(optarg, "json"))
1642                                 output_format = FIO_OUTPUT_JSON;
1643                         else
1644                                 output_format = FIO_OUTPUT_NORMAL;
1645                         break;
1646                 case 'h':
1647                         if (!cur_client) {
1648                                 usage(argv[0]);
1649                                 do_exit++;
1650                         }
1651                         break;
1652                 case 'c':
1653                         if (!cur_client) {
1654                                 fio_show_option_help(optarg);
1655                                 do_exit++;
1656                         }
1657                         break;
1658                 case 'i':
1659                         if (!cur_client) {
1660                                 fio_show_ioengine_help(optarg);
1661                                 do_exit++;
1662                         }
1663                         break;
1664                 case 's':
1665                         dump_cmdline = 1;
1666                         break;
1667                 case 'r':
1668                         read_only = 1;
1669                         break;
1670                 case 'v':
1671                         if (!cur_client) {
1672                                 log_info("%s\n", fio_version_string);
1673                                 do_exit++;
1674                         }
1675                         break;
1676                 case 'V':
1677                         terse_version = atoi(optarg);
1678                         if (!(terse_version == 2 || terse_version == 3 ||
1679                              terse_version == 4)) {
1680                                 log_err("fio: bad terse version format\n");
1681                                 exit_val = 1;
1682                                 do_exit++;
1683                         }
1684                         break;
1685                 case 'e':
1686                         if (!strcmp("always", optarg))
1687                                 eta_print = FIO_ETA_ALWAYS;
1688                         else if (!strcmp("never", optarg))
1689                                 eta_print = FIO_ETA_NEVER;
1690                         break;
1691                 case 'E': {
1692                         long long t = 0;
1693
1694                         if (str_to_decimal(optarg, &t, 0, NULL)) {
1695                                 log_err("fio: failed parsing eta time %s\n", optarg);
1696                                 exit_val = 1;
1697                                 do_exit++;
1698                         }
1699                         eta_new_line = t;
1700                         break;
1701                         }
1702                 case 'd':
1703                         if (set_debug(optarg))
1704                                 do_exit++;
1705                         break;
1706                 case 'P':
1707                         parse_only = 1;
1708                         break;
1709                 case 'x': {
1710                         size_t new_size;
1711
1712                         if (!strcmp(optarg, "global")) {
1713                                 log_err("fio: can't use global as only "
1714                                         "section\n");
1715                                 do_exit++;
1716                                 exit_val = 1;
1717                                 break;
1718                         }
1719                         new_size = (nr_job_sections + 1) * sizeof(char *);
1720                         job_sections = realloc(job_sections, new_size);
1721                         job_sections[nr_job_sections] = strdup(optarg);
1722                         nr_job_sections++;
1723                         break;
1724                         }
1725                 case 'p':
1726                         exec_profile = strdup(optarg);
1727                         break;
1728                 case FIO_GETOPT_JOB: {
1729                         const char *opt = l_opts[lidx].name;
1730                         char *val = optarg;
1731
1732                         if (!strncmp(opt, "name", 4) && td) {
1733                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1734                                 if (ret)
1735                                         return 0;
1736                                 td = NULL;
1737                         }
1738                         if (!td) {
1739                                 int is_section = !strncmp(opt, "name", 4);
1740                                 int global = 0;
1741
1742                                 if (!is_section || !strncmp(val, "global", 6))
1743                                         global = 1;
1744
1745                                 if (is_section && skip_this_section(val))
1746                                         continue;
1747
1748                                 td = get_new_job(global, &def_thread, 1);
1749                                 if (!td || ioengine_load(td))
1750                                         return 0;
1751                                 fio_options_set_ioengine_opts(l_opts, td);
1752                         }
1753
1754                         if ((!val || !strlen(val)) &&
1755                             l_opts[lidx].has_arg == required_argument) {
1756                                 log_err("fio: option %s requires an argument\n", opt);
1757                                 ret = 1;
1758                         } else
1759                                 ret = fio_cmd_option_parse(td, opt, val);
1760
1761                         if (ret) {
1762                                 if (td) {
1763                                         put_job(td);
1764                                         td = NULL;
1765                                 }
1766                                 do_exit++;
1767                         }
1768
1769                         if (!ret && !strcmp(opt, "ioengine")) {
1770                                 free_ioengine(td);
1771                                 if (ioengine_load(td))
1772                                         return 0;
1773                                 fio_options_set_ioengine_opts(l_opts, td);
1774                         }
1775                         break;
1776                 }
1777                 case FIO_GETOPT_IOENGINE: {
1778                         const char *opt = l_opts[lidx].name;
1779                         char *val = optarg;
1780                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1781                         break;
1782                 }
1783                 case 'w':
1784                         warnings_fatal = 1;
1785                         break;
1786                 case 'j':
1787                         max_jobs = atoi(optarg);
1788                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1789                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1790                                 do_exit++;
1791                                 exit_val = 1;
1792                         }
1793                         break;
1794                 case 'S':
1795                         if (nr_clients) {
1796                                 log_err("fio: can't be both client and server\n");
1797                                 do_exit++;
1798                                 exit_val = 1;
1799                                 break;
1800                         }
1801                         if (optarg)
1802                                 fio_server_set_arg(optarg);
1803                         is_backend = 1;
1804                         backend = 1;
1805                         break;
1806                 case 'D':
1807                         pid_file = strdup(optarg);
1808                         break;
1809                 case 'I':
1810                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
1811                                 /* exit on error and calibration only */
1812                                 do_exit++;
1813                                 if (ret == -1)
1814                                         exit_val = 1;
1815                         }
1816                         break;
1817                 case 'C':
1818                         if (is_backend) {
1819                                 log_err("fio: can't be both client and server\n");
1820                                 do_exit++;
1821                                 exit_val = 1;
1822                                 break;
1823                         }
1824                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
1825                                 log_err("fio: failed adding client %s\n", optarg);
1826                                 do_exit++;
1827                                 exit_val = 1;
1828                                 break;
1829                         }
1830                         /*
1831                          * If the next argument exists and isn't an option,
1832                          * assume it's a job file for this client only.
1833                          */
1834                         while (optind < argc) {
1835                                 if (!strncmp(argv[optind], "--", 2) ||
1836                                     !strncmp(argv[optind], "-", 1))
1837                                         break;
1838
1839                                 fio_client_add_ini_file(cur_client, argv[optind]);
1840                                 optind++;
1841                         }
1842                         break;
1843                 case 'T':
1844                         do_exit++;
1845                         exit_val = fio_monotonic_clocktest();
1846                         break;
1847                 case 'L': {
1848                         long long val;
1849
1850                         if (check_str_time(optarg, &val)) {
1851                                 log_err("fio: failed parsing time %s\n", optarg);
1852                                 do_exit++;
1853                                 exit_val = 1;
1854                                 break;
1855                         }
1856                         status_interval = val * 1000;
1857                         break;
1858                         }
1859                 case '?':
1860                         log_err("%s: unrecognized option '%s'\n", argv[0],
1861                                                         argv[optind - 1]);
1862                 default:
1863                         do_exit++;
1864                         exit_val = 1;
1865                         break;
1866                 }
1867                 if (do_exit)
1868                         break;
1869         }
1870
1871         if (do_exit && !(is_backend || nr_clients))
1872                 exit(exit_val);
1873
1874         if (nr_clients && fio_clients_connect()) {
1875                 do_exit++;
1876                 exit_val = 1;
1877                 return -1;
1878         }
1879
1880         if (is_backend && backend)
1881                 return fio_start_server(pid_file);
1882
1883         if (td) {
1884                 if (!ret)
1885                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1886         }
1887
1888         while (!ret && optind < argc) {
1889                 ini_idx++;
1890                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1891                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1892                 optind++;
1893         }
1894
1895         return ini_idx;
1896 }
1897
1898 int fio_init_options(void)
1899 {
1900         f_out = stdout;
1901         f_err = stderr;
1902
1903         fio_options_fill_optstring();
1904         fio_options_dup_and_init(l_opts);
1905
1906         atexit(free_shm);
1907
1908         if (fill_def_thread())
1909                 return 1;
1910
1911         return 0;
1912 }
1913
1914 extern int fio_check_options(struct thread_options *);
1915
1916 int parse_options(int argc, char *argv[])
1917 {
1918         const int type = FIO_CLIENT_TYPE_CLI;
1919         int job_files, i;
1920
1921         if (fio_init_options())
1922                 return 1;
1923         if (fio_test_cconv(&def_thread.o))
1924                 log_err("fio: failed internal cconv test\n");
1925
1926         job_files = parse_cmd_line(argc, argv, type);
1927
1928         if (job_files > 0) {
1929                 for (i = 0; i < job_files; i++) {
1930                         if (fill_def_thread())
1931                                 return 1;
1932                         if (nr_clients) {
1933                                 if (fio_clients_send_ini(ini_file[i]))
1934                                         return 1;
1935                                 free(ini_file[i]);
1936                         } else if (!is_backend) {
1937                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
1938                                         return 1;
1939                                 free(ini_file[i]);
1940                         }
1941                 }
1942         } else if (nr_clients) {
1943                 if (fill_def_thread())
1944                         return 1;
1945                 if (fio_clients_send_ini(NULL))
1946                         return 1;
1947         }
1948
1949         free(ini_file);
1950         fio_options_free(&def_thread);
1951
1952         if (!thread_number) {
1953                 if (parse_dryrun())
1954                         return 0;
1955                 if (exec_profile)
1956                         return 0;
1957                 if (is_backend || nr_clients)
1958                         return 0;
1959                 if (did_arg)
1960                         return 0;
1961
1962                 log_err("No jobs(s) defined\n\n");
1963
1964                 if (!did_arg) {
1965                         usage(argv[0]);
1966                         return 1;
1967                 }
1968
1969                 return 0;
1970         }
1971
1972         if (def_thread.o.gtod_offload) {
1973                 fio_gtod_init();
1974                 fio_gtod_offload = 1;
1975                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1976         }
1977
1978         if (output_format == FIO_OUTPUT_NORMAL)
1979                 log_info("%s\n", fio_version_string);
1980
1981         return 0;
1982 }
1983
1984 void options_default_fill(struct thread_options *o)
1985 {
1986         memcpy(o, &def_thread.o, sizeof(*o));
1987 }