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
 321         if (!parent || !parent->o.group_reporting)
 322                 stat_number++;
 323
 324         return td;
 325 }
 326
 327 static void put_job(struct thread_data *td)
 328 {
 329         if (td == &def_thread)
 330                 return;
 331
 332         profile_td_exit(td);
 333         flow_exit_job(td);
 334
 335         if (td->error)
 336                 log_info("fio: %s\n", td->verror);
 337
 338         fio_options_free(td);
 339         if (td->io_ops)
 340                 free_ioengine(td);
 341
 342         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 343         thread_number--;
 344 }
 345
 346 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 347 {
 348         unsigned int bs = td->o.min_bs[ddir];
 349
 350         assert(ddir_rw(ddir));
 351
 352         if (td->o.rate[ddir])
 353                 td->rate_bps[ddir] = td->o.rate[ddir];
 354         else
 355                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 356
 357         if (!td->rate_bps[ddir]) {
 358                 log_err("rate lower than supported\n");
 359                 return -1;
 360         }
 361
 362         td->rate_pending_usleep[ddir] = 0;
 363         return 0;
 364 }
 365
 366 static int setup_rate(struct thread_data *td)
 367 {
 368         int ret = 0;
 369
 370         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 371                 ret = __setup_rate(td, DDIR_READ);
 372         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 373                 ret |= __setup_rate(td, DDIR_WRITE);
 374         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 375                 ret |= __setup_rate(td, DDIR_TRIM);
 376
 377         return ret;
 378 }
 379
 380 static int fixed_block_size(struct thread_options *o)
 381 {
 382         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 383                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 384                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 385                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 386                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 387 }
 388
 389 /*
 390  * Lazy way of fixing up options that depend on each other. We could also
 391  * define option callback handlers, but this is easier.
 392  */
 393 static int fixup_options(struct thread_data *td)
 394 {
 395         struct thread_options *o = &td->o;
 396         int ret = 0;
 397
 398 #ifndef FIO_HAVE_PSHARED_MUTEX
 399         if (!o->use_thread) {
 400                 log_info("fio: this platform does not support process shared"
 401                          " mutexes, forcing use of threads. Use the 'thread'"
 402                          " option to get rid of this warning.\n");
 403                 o->use_thread = 1;
 404                 ret = warnings_fatal;
 405         }
 406 #endif
 407
 408         if (o->write_iolog_file && o->read_iolog_file) {
 409                 log_err("fio: read iolog overrides write_iolog\n");
 410                 free(o->write_iolog_file);
 411                 o->write_iolog_file = NULL;
 412                 ret = warnings_fatal;
 413         }
 414
 415         /*
 416          * only really works with 1 file
 417          */
 418         if (o->zone_size && o->open_files == 1)
 419                 o->zone_size = 0;
 420
 421         /*
 422          * If zone_range isn't specified, backward compatibility dictates it
 423          * should be made equal to zone_size.
 424          */
 425         if (o->zone_size && !o->zone_range)
 426                 o->zone_range = o->zone_size;
 427
 428         /*
 429          * Reads can do overwrites, we always need to pre-create the file
 430          */
 431         if (td_read(td) || td_rw(td))
 432                 o->overwrite = 1;
 433
 434         if (!o->min_bs[DDIR_READ])
 435                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 436         if (!o->max_bs[DDIR_READ])
 437                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 438         if (!o->min_bs[DDIR_WRITE])
 439                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 440         if (!o->max_bs[DDIR_WRITE])
 441                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 442         if (!o->min_bs[DDIR_TRIM])
 443                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 444         if (!o->max_bs[DDIR_TRIM])
 445                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 446
 447
 448         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 449         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 450
 451         /*
 452          * For random IO, allow blockalign offset other than min_bs.
 453          */
 454         if (!o->ba[DDIR_READ] || !td_random(td))
 455                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 456         if (!o->ba[DDIR_WRITE] || !td_random(td))
 457                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 458         if (!o->ba[DDIR_TRIM] || !td_random(td))
 459                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 460
 461         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 462             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 463             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 464             !o->norandommap) {
 465                 log_err("fio: Any use of blockalign= turns off randommap\n");
 466                 o->norandommap = 1;
 467                 ret = warnings_fatal;
 468         }
 469
 470         if (!o->file_size_high)
 471                 o->file_size_high = o->file_size_low;
 472
 473         if (o->norandommap && o->verify != VERIFY_NONE
 474             && !fixed_block_size(o))  {
 475                 log_err("fio: norandommap given for variable block sizes, "
 476                         "verify disabled\n");
 477                 o->verify = VERIFY_NONE;
 478                 ret = warnings_fatal;
 479         }
 480         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 481                 log_err("fio: bs_unaligned may not work with raw io\n");
 482
 483         /*
 484          * thinktime_spin must be less than thinktime
 485          */
 486         if (o->thinktime_spin > o->thinktime)
 487                 o->thinktime_spin = o->thinktime;
 488
 489         /*
 490          * The low water mark cannot be bigger than the iodepth
 491          */
 492         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 493                 /*
 494                  * syslet work around - if the workload is sequential,
 495                  * we want to let the queue drain all the way down to
 496                  * avoid seeking between async threads
 497                  */
 498                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 499                         o->iodepth_low = 1;
 500                 else
 501                         o->iodepth_low = o->iodepth;
 502         }
 503
 504         /*
 505          * If batch number isn't set, default to the same as iodepth
 506          */
 507         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 508                 o->iodepth_batch = o->iodepth;
 509
 510         if (o->nr_files > td->files_index)
 511                 o->nr_files = td->files_index;
 512
 513         if (o->open_files > o->nr_files || !o->open_files)
 514                 o->open_files = o->nr_files;
 515
 516         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 517             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 518             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 519             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 520                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 521                 ret = 1;
 522         }
 523         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 524             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 525             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 526             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 527             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 528             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 529                 log_err("fio: minimum rate exceeds rate\n");
 530                 ret = 1;
 531         }
 532
 533         if (!o->timeout && o->time_based) {
 534                 log_err("fio: time_based requires a runtime/timeout setting\n");
 535                 o->time_based = 0;
 536                 ret = warnings_fatal;
 537         }
 538
 539         if (o->fill_device && !o->size)
 540                 o->size = -1ULL;
 541
 542         if (o->verify != VERIFY_NONE) {
 543                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 544                         log_info("Multiple writers may overwrite blocks that "
 545                                 "belong to other jobs. This can cause "
 546                                 "verification failures.\n");
 547                         ret = warnings_fatal;
 548                 }
 549
 550                 o->refill_buffers = 1;
 551                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 552                     !o->verify_interval)
 553                         o->verify_interval = o->min_bs[DDIR_WRITE];
 554         }
 555
 556         if (o->pre_read) {
 557                 o->invalidate_cache = 0;
 558                 if (td->io_ops->flags & FIO_PIPEIO) {
 559                         log_info("fio: cannot pre-read files with an IO engine"
 560                                  " that isn't seekable. Pre-read disabled.\n");
 561                         ret = warnings_fatal;
 562                 }
 563         }
 564
 565 #ifndef FIO_HAVE_FDATASYNC
 566         if (o->fdatasync_blocks) {
 567                 log_info("fio: this platform does not support fdatasync()"
 568                          " falling back to using fsync().  Use the 'fsync'"
 569                          " option instead of 'fdatasync' to get rid of"
 570                          " this warning\n");
 571                 o->fsync_blocks = o->fdatasync_blocks;
 572                 o->fdatasync_blocks = 0;
 573                 ret = warnings_fatal;
 574         }
 575 #endif
 576
 577 #ifdef WIN32
 578         /*
 579          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 580          * so fail if we're passed those flags
 581          */
 582         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 583                 log_err("fio: Windows does not support direct or non-buffered io with"
 584                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 585                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 586                 ret = 1;
 587         }
 588 #endif
 589
 590         /*
 591          * For fully compressible data, just zero them at init time.
 592          * It's faster than repeatedly filling it.
 593          */
 594         if (td->o.compress_percentage == 100) {
 595                 td->o.zero_buffers = 1;
 596                 td->o.compress_percentage = 0;
 597         }
 598
 599         return ret;
 600 }
 601
 602 /*
 603  * This function leaks the buffer
 604  */
 605 static char *to_kmg(unsigned int val)
 606 {
 607         char *buf = malloc(32);
 608         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 609         char *p = post;
 610
 611         do {
 612                 if (val & 1023)
 613                         break;
 614
 615                 val >>= 10;
 616                 p++;
 617         } while (*p);
 618
 619         snprintf(buf, 31, "%u%c", val, *p);
 620         return buf;
 621 }
 622
 623 /* External engines are specified by "external:name.o") */
 624 static const char *get_engine_name(const char *str)
 625 {
 626         char *p = strstr(str, ":");
 627
 628         if (!p)
 629                 return str;
 630
 631         p++;
 632         strip_blank_front(&p);
 633         strip_blank_end(p);
 634         return p;
 635 }
 636
 637 static int exists_and_not_file(const char *filename)
 638 {
 639         struct stat sb;
 640
 641         if (lstat(filename, &sb) == -1)
 642                 return 0;
 643
 644         /* \\.\ is the device namespace in Windows, where every file
 645          * is a device node */
 646         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 647                 return 0;
 648
 649         return 1;
 650 }
 651
 652 static void td_fill_rand_seeds_os(struct thread_data *td)
 653 {
 654         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 655         os_random_seed(td->rand_seeds[1], &td->verify_state);
 656         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 657
 658         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 659                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 660
 661         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 662         os_random_seed(td->rand_seeds[6], &td->trim_state);
 663
 664         if (!td_random(td))
 665                 return;
 666
 667         if (td->o.rand_repeatable)
 668                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 669
 670         os_random_seed(td->rand_seeds[4], &td->random_state);
 671 }
 672
 673 static void td_fill_rand_seeds_internal(struct thread_data *td)
 674 {
 675         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 676         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 677         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 678
 679         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 680                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 681
 682         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 683         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 684
 685         if (!td_random(td))
 686                 return;
 687
 688         if (td->o.rand_repeatable)
 689                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 690
 691         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 692 }
 693
 694 void td_fill_rand_seeds(struct thread_data *td)
 695 {
 696         if (td->o.use_os_rand)
 697                 td_fill_rand_seeds_os(td);
 698         else
 699                 td_fill_rand_seeds_internal(td);
 700
 701         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 702 }
 703
 704
 705 /*
 706  * Initializes the ioengine configured for a job, if it has not been done so
 707  * already.
 708  */
 709 int ioengine_load(struct thread_data *td)
 710 {
 711         const char *engine;
 712
 713         /*
 714          * Engine has already been loaded.
 715          */
 716         if (td->io_ops)
 717                 return 0;
 718
 719         engine = get_engine_name(td->o.ioengine);
 720         td->io_ops = load_ioengine(td, engine);
 721         if (!td->io_ops) {
 722                 log_err("fio: failed to load engine %s\n", engine);
 723                 return 1;
 724         }
 725
 726         if (td->io_ops->option_struct_size && td->io_ops->options) {
 727                 /*
 728                  * In cases where td->eo is set, clone it for a child thread.
 729                  * This requires that the parent thread has the same ioengine,
 730                  * but that requirement must be enforced by the code which
 731                  * cloned the thread.
 732                  */
 733                 void *origeo = td->eo;
 734                 /*
 735                  * Otherwise use the default thread options.
 736                  */
 737                 if (!origeo && td != &def_thread && def_thread.eo &&
 738                     def_thread.io_ops->options == td->io_ops->options)
 739                         origeo = def_thread.eo;
 740
 741                 options_init(td->io_ops->options);
 742                 td->eo = malloc(td->io_ops->option_struct_size);
 743                 /*
 744                  * Use the default thread as an option template if this uses the
 745                  * same options structure and there are non-default options
 746                  * used.
 747                  */
 748                 if (origeo) {
 749                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 750                         options_mem_dupe(td->eo, td->io_ops->options);
 751                 } else {
 752                         memset(td->eo, 0, td->io_ops->option_struct_size);
 753                         fill_default_options(td->eo, td->io_ops->options);
 754                 }
 755                 *(struct thread_data **)td->eo = td;
 756         }
 757
 758         return 0;
 759 }
 760
 761 /*
 762  * Adds a job to the list of things todo. Sanitizes the various options
 763  * to make sure we don't have conflicts, and initializes various
 764  * members of td.
 765  */
 766 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 767 {
 768         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 769                                    "randread", "randwrite", "randrw",
 770                                    "trim", NULL, NULL, NULL, "randtrim" };
 771         unsigned int i;
 772         char fname[PATH_MAX];
 773         int numjobs, file_alloced;
 774
 775         /*
 776          * the def_thread is just for options, it's not a real job
 777          */
 778         if (td == &def_thread)
 779                 return 0;
 780
 781         /*
 782          * if we are just dumping the output command line, don't add the job
 783          */
 784         if (dump_cmdline) {
 785                 put_job(td);
 786                 return 0;
 787         }
 788
 789         if (profile_td_init(td))
 790                 goto err;
 791
 792         if (ioengine_load(td))
 793                 goto err;
 794
 795         if (td->o.use_thread)
 796                 nr_thread++;
 797         else
 798                 nr_process++;
 799
 800         if (td->o.odirect)
 801                 td->io_ops->flags |= FIO_RAWIO;
 802
 803         file_alloced = 0;
 804         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 805                 file_alloced = 1;
 806
 807                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 808                         add_file(td, jobname);
 809                 else {
 810                         for (i = 0; i < td->o.nr_files; i++) {
 811                                 sprintf(fname, "%s.%d.%d", jobname,
 812                                                         td->thread_number, i);
 813                                 add_file(td, fname);
 814                         }
 815                 }
 816         }
 817
 818         if (fixup_options(td))
 819                 goto err;
 820
 821         flow_init_job(td);
 822
 823         /*
 824          * IO engines only need this for option callbacks, and the address may
 825          * change in subprocesses.
 826          */
 827         if (td->eo)
 828                 *(struct thread_data **)td->eo = NULL;
 829
 830         if (td->io_ops->flags & FIO_DISKLESSIO) {
 831                 struct fio_file *f;
 832
 833                 for_each_file(td, f, i)
 834                         f->real_file_size = -1ULL;
 835         }
 836
 837         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
 838
 839         td->ts.clat_percentiles = td->o.clat_percentiles;
 840         if (td->o.overwrite_plist)
 841                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 842         else
 843                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 844
 845         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 846                 td->ts.clat_stat[i].min_val = ULONG_MAX;
 847                 td->ts.slat_stat[i].min_val = ULONG_MAX;
 848                 td->ts.lat_stat[i].min_val = ULONG_MAX;
 849                 td->ts.bw_stat[i].min_val = ULONG_MAX;
 850         }
 851         td->ddir_seq_nr = td->o.ddir_seq_nr;
 852
 853         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 854                 prev_group_jobs = 0;
 855                 groupid++;
 856         }
 857
 858         td->groupid = groupid;
 859         prev_group_jobs++;
 860
 861         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 862                 td_verror(td, errno, "init_random_state");
 863                 goto err;
 864         }
 865
 866         if (setup_rate(td))
 867                 goto err;
 868
 869         if (td->o.write_lat_log) {
 870                 setup_log(&td->lat_log, td->o.log_avg_msec);
 871                 setup_log(&td->slat_log, td->o.log_avg_msec);
 872                 setup_log(&td->clat_log, td->o.log_avg_msec);
 873         }
 874         if (td->o.write_bw_log)
 875                 setup_log(&td->bw_log, td->o.log_avg_msec);
 876         if (td->o.write_iops_log)
 877                 setup_log(&td->iops_log, td->o.log_avg_msec);
 878
 879         if (!td->o.name)
 880                 td->o.name = strdup(jobname);
 881
 882         if (output_format == FIO_OUTPUT_NORMAL) {
 883                 if (!job_add_num) {
 884                         if (!strcmp(td->io_ops->name, "cpuio")) {
 885                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 886                                          " cpucycle=%u\n", td->o.name,
 887                                                         td->o.cpuload,
 888                                                         td->o.cpucycle);
 889                         } else {
 890                                 char *c1, *c2, *c3, *c4, *c5, *c6;
 891
 892                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 893                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 894                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 895                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 896                                 c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
 897                                 c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
 898
 899                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
 900                                          " ioengine=%s, iodepth=%u\n",
 901                                                 td->o.name, td->groupid,
 902                                                 ddir_str[td->o.td_ddir],
 903                                                 c1, c2, c3, c4, c5, c6,
 904                                                 td->io_ops->name,
 905                                                 td->o.iodepth);
 906
 907                                 free(c1);
 908                                 free(c2);
 909                                 free(c3);
 910                                 free(c4);
 911                                 free(c5);
 912                                 free(c6);
 913                         }
 914                 } else if (job_add_num == 1)
 915                         log_info("...\n");
 916         }
 917
 918         /*
 919          * recurse add identical jobs, clear numjobs and stonewall options
 920          * as they don't apply to sub-jobs
 921          */
 922         numjobs = td->o.numjobs;
 923         while (--numjobs) {
 924                 struct thread_data *td_new = get_new_job(0, td, 1);
 925
 926                 if (!td_new)
 927                         goto err;
 928
 929                 td_new->o.numjobs = 1;
 930                 td_new->o.stonewall = 0;
 931                 td_new->o.new_group = 0;
 932
 933                 if (file_alloced) {
 934                         td_new->o.filename = NULL;
 935                         td_new->files_index = 0;
 936                         td_new->files_size = 0;
 937                         td_new->files = NULL;
 938                 }
 939
 940                 job_add_num = numjobs - 1;
 941
 942                 if (add_job(td_new, jobname, job_add_num))
 943                         goto err;
 944         }
 945
 946         return 0;
 947 err:
 948         put_job(td);
 949         return -1;
 950 }
 951
 952 /*
 953  * Parse as if 'o' was a command line
 954  */
 955 void add_job_opts(const char **o)
 956 {
 957         struct thread_data *td, *td_parent;
 958         int i, in_global = 1;
 959         char jobname[32];
 960
 961         i = 0;
 962         td_parent = td = NULL;
 963         while (o[i]) {
 964                 if (!strncmp(o[i], "name", 4)) {
 965                         in_global = 0;
 966                         if (td)
 967                                 add_job(td, jobname, 0);
 968                         td = NULL;
 969                         sprintf(jobname, "%s", o[i] + 5);
 970                 }
 971                 if (in_global && !td_parent)
 972                         td_parent = get_new_job(1, &def_thread, 0);
 973                 else if (!in_global && !td) {
 974                         if (!td_parent)
 975                                 td_parent = &def_thread;
 976                         td = get_new_job(0, td_parent, 0);
 977                 }
 978                 if (in_global)
 979                         fio_options_parse(td_parent, (char **) &o[i], 1);
 980                 else
 981                         fio_options_parse(td, (char **) &o[i], 1);
 982                 i++;
 983         }
 984
 985         if (td)
 986                 add_job(td, jobname, 0);
 987 }
 988
 989 static int skip_this_section(const char *name)
 990 {
 991         int i;
 992
 993         if (!nr_job_sections)
 994                 return 0;
 995         if (!strncmp(name, "global", 6))
 996                 return 0;
 997
 998         for (i = 0; i < nr_job_sections; i++)
 999                 if (!strcmp(job_sections[i], name))
1000                         return 0;
1001
1002         return 1;
1003 }
1004
1005 static int is_empty_or_comment(char *line)
1006 {
1007         unsigned int i;
1008
1009         for (i = 0; i < strlen(line); i++) {
1010                 if (line[i] == ';')
1011                         return 1;
1012                 if (line[i] == '#')
1013                         return 1;
1014                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1015                         return 0;
1016         }
1017
1018         return 1;
1019 }
1020
1021 /*
1022  * This is our [ini] type file parser.
1023  */
1024 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1025 {
1026         unsigned int global;
1027         struct thread_data *td;
1028         char *string, *name;
1029         FILE *f;
1030         char *p;
1031         int ret = 0, stonewall;
1032         int first_sect = 1;
1033         int skip_fgets = 0;
1034         int inside_skip = 0;
1035         char **opts;
1036         int i, alloc_opts, num_opts;
1037
1038         if (is_buf)
1039                 f = NULL;
1040         else {
1041                 if (!strcmp(file, "-"))
1042                         f = stdin;
1043                 else
1044                         f = fopen(file, "r");
1045
1046                 if (!f) {
1047                         perror("fopen job file");
1048                         return 1;
1049                 }
1050         }
1051
1052         string = malloc(4096);
1053
1054         /*
1055          * it's really 256 + small bit, 280 should suffice
1056          */
1057         name = malloc(280);
1058         memset(name, 0, 280);
1059
1060         alloc_opts = 8;
1061         opts = malloc(sizeof(char *) * alloc_opts);
1062         num_opts = 0;
1063
1064         stonewall = stonewall_flag;
1065         do {
1066                 /*
1067                  * if skip_fgets is set, we already have loaded a line we
1068                  * haven't handled.
1069                  */
1070                 if (!skip_fgets) {
1071                         if (is_buf)
1072                                 p = strsep(&file, "\n");
1073                         else
1074                                 p = fgets(string, 4096, f);
1075                         if (!p)
1076                                 break;
1077                 }
1078
1079                 skip_fgets = 0;
1080                 strip_blank_front(&p);
1081                 strip_blank_end(p);
1082
1083                 if (is_empty_or_comment(p))
1084                         continue;
1085                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1086                         if (inside_skip)
1087                                 continue;
1088                         log_err("fio: option <%s> outside of [] job section\n",
1089                                                                         p);
1090                         break;
1091                 }
1092
1093                 name[strlen(name) - 1] = '\0';
1094
1095                 if (skip_this_section(name)) {
1096                         inside_skip = 1;
1097                         continue;
1098                 } else
1099                         inside_skip = 0;
1100
1101                 global = !strncmp(name, "global", 6);
1102
1103                 if (dump_cmdline) {
1104                         if (first_sect)
1105                                 log_info("fio ");
1106                         if (!global)
1107                                 log_info("--name=%s ", name);
1108                         first_sect = 0;
1109                 }
1110
1111                 td = get_new_job(global, &def_thread, 0);
1112                 if (!td) {
1113                         ret = 1;
1114                         break;
1115                 }
1116
1117                 /*
1118                  * Seperate multiple job files by a stonewall
1119                  */
1120                 if (!global && stonewall) {
1121                         td->o.stonewall = stonewall;
1122                         stonewall = 0;
1123                 }
1124
1125                 num_opts = 0;
1126                 memset(opts, 0, alloc_opts * sizeof(char *));
1127
1128                 while (1) {
1129                         if (is_buf)
1130                                 p = strsep(&file, "\n");
1131                         else
1132                                 p = fgets(string, 4096, f);
1133                         if (!p)
1134                                 break;
1135
1136                         if (is_empty_or_comment(p))
1137                                 continue;
1138
1139                         strip_blank_front(&p);
1140
1141                         /*
1142                          * new section, break out and make sure we don't
1143                          * fgets() a new line at the top.
1144                          */
1145                         if (p[0] == '[') {
1146                                 skip_fgets = 1;
1147                                 break;
1148                         }
1149
1150                         strip_blank_end(p);
1151
1152                         if (num_opts == alloc_opts) {
1153                                 alloc_opts <<= 1;
1154                                 opts = realloc(opts,
1155                                                 alloc_opts * sizeof(char *));
1156                         }
1157
1158                         opts[num_opts] = strdup(p);
1159                         num_opts++;
1160                 }
1161
1162                 ret = fio_options_parse(td, opts, num_opts);
1163                 if (!ret) {
1164                         if (dump_cmdline)
1165                                 for (i = 0; i < num_opts; i++)
1166                                         log_info("--%s ", opts[i]);
1167
1168                         ret = add_job(td, name, 0);
1169                 } else {
1170                         log_err("fio: job %s dropped\n", name);
1171                         put_job(td);
1172                 }
1173
1174                 for (i = 0; i < num_opts; i++)
1175                         free(opts[i]);
1176                 num_opts = 0;
1177         } while (!ret);
1178
1179         if (dump_cmdline)
1180                 log_info("\n");
1181
1182         i = 0;
1183         while (i < nr_job_sections) {
1184                 free(job_sections[i]);
1185                 i++;
1186         }
1187
1188         for (i = 0; i < num_opts; i++)
1189                 free(opts[i]);
1190
1191         free(string);
1192         free(name);
1193         free(opts);
1194         if (!is_buf && f != stdin)
1195                 fclose(f);
1196         return ret;
1197 }
1198
1199 static int fill_def_thread(void)
1200 {
1201         memset(&def_thread, 0, sizeof(def_thread));
1202
1203         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1204         def_thread.o.timeout = def_timeout;
1205         def_thread.o.error_dump = 1;
1206         /*
1207          * fill default options
1208          */
1209         fio_fill_default_options(&def_thread);
1210         return 0;
1211 }
1212
1213 static void usage(const char *name)
1214 {
1215         printf("%s\n", fio_version_string);
1216         printf("%s [options] [job options] <job file(s)>\n", name);
1217         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1218                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1219                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1220         printf("  --output\t\tWrite output to file\n");
1221         printf("  --runtime\t\tRuntime in seconds\n");
1222         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1223         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1224         printf("  --minimal\t\tMinimal (terse) output\n");
1225         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1226         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1227         printf("  --version\t\tPrint version info and exit\n");
1228         printf("  --help\t\tPrint this page\n");
1229         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1230                 " them\n");
1231         printf("  --enghelp=engine\tPrint ioengine help, or list"
1232                 " available ioengines\n");
1233         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1234                 " cmd\n");
1235         printf("  --showcmd\t\tTurn a job file into command line options\n");
1236         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1237         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1238         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1239                 " writes\n");
1240         printf("  --section=name\tOnly run specified section in job file\n");
1241         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1242                 " (def 1024)\n");
1243         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1244         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1245         printf("  --server=args\t\tStart a backend fio server\n");
1246         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1247         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1248         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1249         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1250 }
1251
1252 #ifdef FIO_INC_DEBUG
1253 struct debug_level debug_levels[] = {
1254         { .name = "process",    .shift = FD_PROCESS, },
1255         { .name = "file",       .shift = FD_FILE, },
1256         { .name = "io",         .shift = FD_IO, },
1257         { .name = "mem",        .shift = FD_MEM, },
1258         { .name = "blktrace",   .shift = FD_BLKTRACE },
1259         { .name = "verify",     .shift = FD_VERIFY },
1260         { .name = "random",     .shift = FD_RANDOM },
1261         { .name = "parse",      .shift = FD_PARSE },
1262         { .name = "diskutil",   .shift = FD_DISKUTIL },
1263         { .name = "job",        .shift = FD_JOB },
1264         { .name = "mutex",      .shift = FD_MUTEX },
1265         { .name = "profile",    .shift = FD_PROFILE },
1266         { .name = "time",       .shift = FD_TIME },
1267         { .name = "net",        .shift = FD_NET },
1268         { .name = NULL, },
1269 };
1270
1271 static int set_debug(const char *string)
1272 {
1273         struct debug_level *dl;
1274         char *p = (char *) string;
1275         char *opt;
1276         int i;
1277
1278         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1279                 log_info("fio: dumping debug options:");
1280                 for (i = 0; debug_levels[i].name; i++) {
1281                         dl = &debug_levels[i];
1282                         log_info("%s,", dl->name);
1283                 }
1284                 log_info("all\n");
1285                 return 1;
1286         }
1287
1288         while ((opt = strsep(&p, ",")) != NULL) {
1289                 int found = 0;
1290
1291                 if (!strncmp(opt, "all", 3)) {
1292                         log_info("fio: set all debug options\n");
1293                         fio_debug = ~0UL;
1294                         continue;
1295                 }
1296
1297                 for (i = 0; debug_levels[i].name; i++) {
1298                         dl = &debug_levels[i];
1299                         found = !strncmp(opt, dl->name, strlen(dl->name));
1300                         if (!found)
1301                                 continue;
1302
1303                         if (dl->shift == FD_JOB) {
1304                                 opt = strchr(opt, ':');
1305                                 if (!opt) {
1306                                         log_err("fio: missing job number\n");
1307                                         break;
1308                                 }
1309                                 opt++;
1310                                 fio_debug_jobno = atoi(opt);
1311                                 log_info("fio: set debug jobno %d\n",
1312                                                         fio_debug_jobno);
1313                         } else {
1314                                 log_info("fio: set debug option %s\n", opt);
1315                                 fio_debug |= (1UL << dl->shift);
1316                         }
1317                         break;
1318                 }
1319
1320                 if (!found)
1321                         log_err("fio: debug mask %s not found\n", opt);
1322         }
1323         return 0;
1324 }
1325 #else
1326 static int set_debug(const char *string)
1327 {
1328         log_err("fio: debug tracing not included in build\n");
1329         return 1;
1330 }
1331 #endif
1332
1333 static void fio_options_fill_optstring(void)
1334 {
1335         char *ostr = cmd_optstr;
1336         int i, c;
1337
1338         c = i = 0;
1339         while (l_opts[i].name) {
1340                 ostr[c++] = l_opts[i].val;
1341                 if (l_opts[i].has_arg == required_argument)
1342                         ostr[c++] = ':';
1343                 else if (l_opts[i].has_arg == optional_argument) {
1344                         ostr[c++] = ':';
1345                         ostr[c++] = ':';
1346                 }
1347                 i++;
1348         }
1349         ostr[c] = '\0';
1350 }
1351
1352 static int client_flag_set(char c)
1353 {
1354         int i;
1355
1356         i = 0;
1357         while (l_opts[i].name) {
1358                 int val = l_opts[i].val;
1359
1360                 if (c == (val & 0xff))
1361                         return (val & FIO_CLIENT_FLAG);
1362
1363                 i++;
1364         }
1365
1366         return 0;
1367 }
1368
1369 void parse_cmd_client(void *client, char *opt)
1370 {
1371         fio_client_add_cmd_option(client, opt);
1372 }
1373
1374 int parse_cmd_line(int argc, char *argv[])
1375 {
1376         struct thread_data *td = NULL;
1377         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1378         char *ostr = cmd_optstr;
1379         void *pid_file = NULL;
1380         void *cur_client = NULL;
1381         int backend = 0;
1382
1383         /*
1384          * Reset optind handling, since we may call this multiple times
1385          * for the backend.
1386          */
1387         optind = 1;
1388
1389         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1390                 did_arg = 1;
1391
1392                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1393                         parse_cmd_client(cur_client, argv[optind - 1]);
1394                         c &= ~FIO_CLIENT_FLAG;
1395                 }
1396
1397                 switch (c) {
1398                 case 'a':
1399                         smalloc_pool_size = atoi(optarg);
1400                         break;
1401                 case 't':
1402                         def_timeout = atoi(optarg);
1403                         break;
1404                 case 'l':
1405                         write_lat_log = 1;
1406                         break;
1407                 case 'b':
1408                         write_bw_log = 1;
1409                         break;
1410                 case 'o':
1411                         f_out = fopen(optarg, "w+");
1412                         if (!f_out) {
1413                                 perror("fopen output");
1414                                 exit(1);
1415                         }
1416                         f_err = f_out;
1417                         break;
1418                 case 'm':
1419                         output_format = FIO_OUTPUT_TERSE;
1420                         break;
1421                 case 'F':
1422                         if (!strcmp(optarg, "minimal") ||
1423                             !strcmp(optarg, "terse") ||
1424                             !strcmp(optarg, "csv"))
1425                                 output_format = FIO_OUTPUT_TERSE;
1426                         else if (!strcmp(optarg, "json"))
1427                                 output_format = FIO_OUTPUT_JSON;
1428                         else
1429                                 output_format = FIO_OUTPUT_NORMAL;
1430                         break;
1431                 case 'h':
1432                         if (!cur_client) {
1433                                 usage(argv[0]);
1434                                 do_exit++;
1435                         }
1436                         break;
1437                 case 'c':
1438                         if (!cur_client) {
1439                                 fio_show_option_help(optarg);
1440                                 do_exit++;
1441                         }
1442                         break;
1443                 case 'i':
1444                         if (!cur_client) {
1445                                 fio_show_ioengine_help(optarg);
1446                                 do_exit++;
1447                         }
1448                         break;
1449                 case 's':
1450                         dump_cmdline = 1;
1451                         break;
1452                 case 'r':
1453                         read_only = 1;
1454                         break;
1455                 case 'v':
1456                         if (!cur_client) {
1457                                 log_info("%s\n", fio_version_string);
1458                                 do_exit++;
1459                         }
1460                         break;
1461                 case 'V':
1462                         terse_version = atoi(optarg);
1463                         if (!(terse_version == 2 || terse_version == 3 ||
1464                              terse_version == 4)) {
1465                                 log_err("fio: bad terse version format\n");
1466                                 exit_val = 1;
1467                                 do_exit++;
1468                         }
1469                         break;
1470                 case 'e':
1471                         if (!strcmp("always", optarg))
1472                                 eta_print = FIO_ETA_ALWAYS;
1473                         else if (!strcmp("never", optarg))
1474                                 eta_print = FIO_ETA_NEVER;
1475                         break;
1476                 case 'd':
1477                         if (set_debug(optarg))
1478                                 do_exit++;
1479                         break;
1480                 case 'x': {
1481                         size_t new_size;
1482
1483                         if (!strcmp(optarg, "global")) {
1484                                 log_err("fio: can't use global as only "
1485                                         "section\n");
1486                                 do_exit++;
1487                                 exit_val = 1;
1488                                 break;
1489                         }
1490                         new_size = (nr_job_sections + 1) * sizeof(char *);
1491                         job_sections = realloc(job_sections, new_size);
1492                         job_sections[nr_job_sections] = strdup(optarg);
1493                         nr_job_sections++;
1494                         break;
1495                         }
1496                 case 'p':
1497                         exec_profile = strdup(optarg);
1498                         break;
1499                 case FIO_GETOPT_JOB: {
1500                         const char *opt = l_opts[lidx].name;
1501                         char *val = optarg;
1502
1503                         if (!strncmp(opt, "name", 4) && td) {
1504                                 ret = add_job(td, td->o.name ?: "fio", 0);
1505                                 if (ret)
1506                                         return 0;
1507                                 td = NULL;
1508                         }
1509                         if (!td) {
1510                                 int is_section = !strncmp(opt, "name", 4);
1511                                 int global = 0;
1512
1513                                 if (!is_section || !strncmp(val, "global", 6))
1514                                         global = 1;
1515
1516                                 if (is_section && skip_this_section(val))
1517                                         continue;
1518
1519                                 td = get_new_job(global, &def_thread, 1);
1520                                 if (!td || ioengine_load(td))
1521                                         return 0;
1522                                 fio_options_set_ioengine_opts(l_opts, td);
1523                         }
1524
1525                         ret = fio_cmd_option_parse(td, opt, val);
1526
1527                         if (!ret && !strcmp(opt, "ioengine")) {
1528                                 free_ioengine(td);
1529                                 if (ioengine_load(td))
1530                                         return 0;
1531                                 fio_options_set_ioengine_opts(l_opts, td);
1532                         }
1533                         break;
1534                 }
1535                 case FIO_GETOPT_IOENGINE: {
1536                         const char *opt = l_opts[lidx].name;
1537                         char *val = optarg;
1538                         opt = l_opts[lidx].name;
1539                         val = optarg;
1540                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1541                         break;
1542                 }
1543                 case 'w':
1544                         warnings_fatal = 1;
1545                         break;
1546                 case 'j':
1547                         max_jobs = atoi(optarg);
1548                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1549                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1550                                 do_exit++;
1551                                 exit_val = 1;
1552                         }
1553                         break;
1554                 case 'S':
1555                         if (nr_clients) {
1556                                 log_err("fio: can't be both client and server\n");
1557                                 do_exit++;
1558                                 exit_val = 1;
1559                                 break;
1560                         }
1561                         if (optarg)
1562                                 fio_server_set_arg(optarg);
1563                         is_backend = 1;
1564                         backend = 1;
1565                         break;
1566                 case 'D':
1567                         pid_file = strdup(optarg);
1568                         break;
1569                 case 'C':
1570                         if (is_backend) {
1571                                 log_err("fio: can't be both client and server\n");
1572                                 do_exit++;
1573                                 exit_val = 1;
1574                                 break;
1575                         }
1576                         if (fio_client_add(optarg, &cur_client)) {
1577                                 log_err("fio: failed adding client %s\n", optarg);
1578                                 do_exit++;
1579                                 exit_val = 1;
1580                                 break;
1581                         }
1582                         /*
1583                          * If the next argument exists and isn't an option,
1584                          * assume it's a job file for this client only.
1585                          */
1586                         while (optind < argc) {
1587                                 if (!strncmp(argv[optind], "--", 2) ||
1588                                     !strncmp(argv[optind], "-", 1))
1589                                         break;
1590
1591                                 fio_client_add_ini_file(cur_client, argv[optind]);
1592                                 optind++;
1593                         }
1594                         break;
1595                 default:
1596                         do_exit++;
1597                         exit_val = 1;
1598                         break;
1599                 }
1600                 if (do_exit)
1601                         break;
1602         }
1603
1604         if (do_exit) {
1605                 if (exit_val && !(is_backend || nr_clients))
1606                         exit(exit_val);
1607         }
1608
1609         if (nr_clients && fio_clients_connect()) {
1610                 do_exit++;
1611                 exit_val = 1;
1612                 return -1;
1613         }
1614
1615         if (is_backend && backend)
1616                 return fio_start_server(pid_file);
1617
1618         if (td) {
1619                 if (!ret)
1620                         ret = add_job(td, td->o.name ?: "fio", 0);
1621         }
1622
1623         while (!ret && optind < argc) {
1624                 ini_idx++;
1625                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1626                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1627                 optind++;
1628         }
1629
1630         return ini_idx;
1631 }
1632
1633 int parse_options(int argc, char *argv[])
1634 {
1635         int job_files, i;
1636
1637         f_out = stdout;
1638         f_err = stderr;
1639
1640         fio_options_fill_optstring();
1641         fio_options_dup_and_init(l_opts);
1642
1643         atexit(free_shm);
1644
1645         if (fill_def_thread())
1646                 return 1;
1647
1648         job_files = parse_cmd_line(argc, argv);
1649
1650         if (job_files > 0) {
1651                 for (i = 0; i < job_files; i++) {
1652                         if (fill_def_thread())
1653                                 return 1;
1654                         if (nr_clients) {
1655                                 if (fio_clients_send_ini(ini_file[i]))
1656                                         return 1;
1657                                 free(ini_file[i]);
1658                         } else if (!is_backend) {
1659                                 if (parse_jobs_ini(ini_file[i], 0, i))
1660                                         return 1;
1661                                 free(ini_file[i]);
1662                         }
1663                 }
1664         } else if (nr_clients) {
1665                 if (fill_def_thread())
1666                         return 1;
1667                 if (fio_clients_send_ini(NULL))
1668                         return 1;
1669         }
1670
1671         free(ini_file);
1672         fio_options_free(&def_thread);
1673
1674         if (!thread_number) {
1675                 if (dump_cmdline)
1676                         return 0;
1677                 if (exec_profile)
1678                         return 0;
1679                 if (is_backend || nr_clients)
1680                         return 0;
1681                 if (did_arg)
1682                         return 0;
1683
1684                 log_err("No jobs(s) defined\n\n");
1685
1686                 if (!did_arg) {
1687                         usage(argv[0]);
1688                         return 1;
1689                 }
1690
1691                 return 0;
1692         }
1693
1694         if (def_thread.o.gtod_offload) {
1695                 fio_gtod_init();
1696                 fio_gtod_offload = 1;
1697                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1698         }
1699
1700         if (output_format == FIO_OUTPUT_NORMAL)
1701                 log_info("%s\n", fio_version_string);
1702
1703         return 0;
1704 }