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 #include "filelock.h"
  28
  29 #include "lib/getopt.h"
  30 #include "lib/strcasestr.h"
  31
  32 #include "crc/test.h"
  33
  34 const char fio_version_string[] = FIO_VERSION;
  35
  36 #define FIO_RANDSEED            (0xb1899bedUL)
  37
  38 static char **ini_file;
  39 static int max_jobs = FIO_MAX_JOBS;
  40 static int dump_cmdline;
  41 static long long def_timeout;
  42 static int parse_only;
  43
  44 static struct thread_data def_thread;
  45 struct thread_data *threads = NULL;
  46 static char **job_sections;
  47 static int nr_job_sections;
  48
  49 int exitall_on_terminate = 0;
  50 int output_format = FIO_OUTPUT_NORMAL;
  51 int append_terse_output = 0;
  52 int eta_print = FIO_ETA_AUTO;
  53 int eta_new_line = 0;
  54 FILE *f_out = NULL;
  55 FILE *f_err = NULL;
  56 char *exec_profile = NULL;
  57 int warnings_fatal = 0;
  58 int terse_version = 3;
  59 int is_backend = 0;
  60 int nr_clients = 0;
  61 int log_syslog = 0;
  62
  63 int write_bw_log = 0;
  64 int read_only = 0;
  65 int status_interval = 0;
  66
  67 static int prev_group_jobs;
  68
  69 unsigned long fio_debug = 0;
  70 unsigned int fio_debug_jobno = -1;
  71 unsigned int *fio_debug_jobp = NULL;
  72
  73 static char cmd_optstr[256];
  74 static int did_arg;
  75
  76 #define FIO_CLIENT_FLAG         (1 << 16)
  77
  78 /*
  79  * Command line options. These will contain the above, plus a few
  80  * extra that only pertain to fio itself and not jobs.
  81  */
  82 static struct option l_opts[FIO_NR_OPTIONS] = {
  83         {
  84                 .name           = (char *) "output",
  85                 .has_arg        = required_argument,
  86                 .val            = 'o' | FIO_CLIENT_FLAG,
  87         },
  88         {
  89                 .name           = (char *) "timeout",
  90                 .has_arg        = required_argument,
  91                 .val            = 't' | FIO_CLIENT_FLAG,
  92         },
  93         {
  94                 .name           = (char *) "latency-log",
  95                 .has_arg        = required_argument,
  96                 .val            = 'l' | FIO_CLIENT_FLAG,
  97         },
  98         {
  99                 .name           = (char *) "bandwidth-log",
 100                 .has_arg        = required_argument,
 101                 .val            = 'b' | FIO_CLIENT_FLAG,
 102         },
 103         {
 104                 .name           = (char *) "minimal",
 105                 .has_arg        = no_argument,
 106                 .val            = 'm' | FIO_CLIENT_FLAG,
 107         },
 108         {
 109                 .name           = (char *) "output-format",
 110                 .has_arg        = optional_argument,
 111                 .val            = 'F' | FIO_CLIENT_FLAG,
 112         },
 113         {
 114                 .name           = (char *) "append-terse",
 115                 .has_arg        = optional_argument,
 116                 .val            = 'f',
 117         },
 118         {
 119                 .name           = (char *) "version",
 120                 .has_arg        = no_argument,
 121                 .val            = 'v' | FIO_CLIENT_FLAG,
 122         },
 123         {
 124                 .name           = (char *) "help",
 125                 .has_arg        = no_argument,
 126                 .val            = 'h' | FIO_CLIENT_FLAG,
 127         },
 128         {
 129                 .name           = (char *) "cmdhelp",
 130                 .has_arg        = optional_argument,
 131                 .val            = 'c' | FIO_CLIENT_FLAG,
 132         },
 133         {
 134                 .name           = (char *) "enghelp",
 135                 .has_arg        = optional_argument,
 136                 .val            = 'i' | FIO_CLIENT_FLAG,
 137         },
 138         {
 139                 .name           = (char *) "showcmd",
 140                 .has_arg        = no_argument,
 141                 .val            = 's' | FIO_CLIENT_FLAG,
 142         },
 143         {
 144                 .name           = (char *) "readonly",
 145                 .has_arg        = no_argument,
 146                 .val            = 'r' | FIO_CLIENT_FLAG,
 147         },
 148         {
 149                 .name           = (char *) "eta",
 150                 .has_arg        = required_argument,
 151                 .val            = 'e' | FIO_CLIENT_FLAG,
 152         },
 153         {
 154                 .name           = (char *) "eta-newline",
 155                 .has_arg        = required_argument,
 156                 .val            = 'E' | FIO_CLIENT_FLAG,
 157         },
 158         {
 159                 .name           = (char *) "debug",
 160                 .has_arg        = required_argument,
 161                 .val            = 'd' | FIO_CLIENT_FLAG,
 162         },
 163         {
 164                 .name           = (char *) "parse-only",
 165                 .has_arg        = no_argument,
 166                 .val            = 'P' | FIO_CLIENT_FLAG,
 167         },
 168         {
 169                 .name           = (char *) "section",
 170                 .has_arg        = required_argument,
 171                 .val            = 'x' | FIO_CLIENT_FLAG,
 172         },
 173 #ifdef CONFIG_ZLIB
 174         {
 175                 .name           = (char *) "inflate-log",
 176                 .has_arg        = required_argument,
 177                 .val            = 'X' | FIO_CLIENT_FLAG,
 178         },
 179 #endif
 180         {
 181                 .name           = (char *) "alloc-size",
 182                 .has_arg        = required_argument,
 183                 .val            = 'a' | FIO_CLIENT_FLAG,
 184         },
 185         {
 186                 .name           = (char *) "profile",
 187                 .has_arg        = required_argument,
 188                 .val            = 'p' | FIO_CLIENT_FLAG,
 189         },
 190         {
 191                 .name           = (char *) "warnings-fatal",
 192                 .has_arg        = no_argument,
 193                 .val            = 'w' | FIO_CLIENT_FLAG,
 194         },
 195         {
 196                 .name           = (char *) "max-jobs",
 197                 .has_arg        = required_argument,
 198                 .val            = 'j' | FIO_CLIENT_FLAG,
 199         },
 200         {
 201                 .name           = (char *) "terse-version",
 202                 .has_arg        = required_argument,
 203                 .val            = 'V' | FIO_CLIENT_FLAG,
 204         },
 205         {
 206                 .name           = (char *) "server",
 207                 .has_arg        = optional_argument,
 208                 .val            = 'S',
 209         },
 210         {       .name           = (char *) "daemonize",
 211                 .has_arg        = required_argument,
 212                 .val            = 'D',
 213         },
 214         {
 215                 .name           = (char *) "client",
 216                 .has_arg        = required_argument,
 217                 .val            = 'C',
 218         },
 219         {
 220                 .name           = (char *) "cpuclock-test",
 221                 .has_arg        = no_argument,
 222                 .val            = 'T',
 223         },
 224         {
 225                 .name           = (char *) "crctest",
 226                 .has_arg        = optional_argument,
 227                 .val            = 'G',
 228         },
 229         {
 230                 .name           = (char *) "idle-prof",
 231                 .has_arg        = required_argument,
 232                 .val            = 'I',
 233         },
 234         {
 235                 .name           = (char *) "status-interval",
 236                 .has_arg        = required_argument,
 237                 .val            = 'L',
 238         },
 239         {
 240                 .name           = NULL,
 241         },
 242 };
 243
 244 void free_threads_shm(void)
 245 {
 246         if (threads) {
 247                 void *tp = threads;
 248 #ifndef CONFIG_NO_SHM
 249                 struct shmid_ds sbuf;
 250
 251                 threads = NULL;
 252                 shmdt(tp);
 253                 shmctl(shm_id, IPC_RMID, &sbuf);
 254                 shm_id = -1;
 255 #else
 256                 threads = NULL;
 257                 free(tp);
 258 #endif
 259         }
 260 }
 261
 262 static void free_shm(void)
 263 {
 264         if (threads) {
 265                 file_hash_exit();
 266                 flow_exit();
 267                 fio_debug_jobp = NULL;
 268                 free_threads_shm();
 269         }
 270
 271         options_free(fio_options, &def_thread);
 272         fio_filelock_exit();
 273         scleanup();
 274 }
 275
 276 /*
 277  * The thread area is shared between the main process and the job
 278  * threads/processes. So setup a shared memory segment that will hold
 279  * all the job info. We use the end of the region for keeping track of
 280  * open files across jobs, for file sharing.
 281  */
 282 static int setup_thread_area(void)
 283 {
 284         void *hash;
 285
 286         if (threads)
 287                 return 0;
 288
 289         /*
 290          * 1024 is too much on some machines, scale max_jobs if
 291          * we get a failure that looks like too large a shm segment
 292          */
 293         do {
 294                 size_t size = max_jobs * sizeof(struct thread_data);
 295
 296                 size += file_hash_size;
 297                 size += sizeof(unsigned int);
 298
 299 #ifndef CONFIG_NO_SHM
 300                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 301                 if (shm_id != -1)
 302                         break;
 303                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 304                         perror("shmget");
 305                         break;
 306                 }
 307 #else
 308                 threads = malloc(size);
 309                 if (threads)
 310                         break;
 311 #endif
 312
 313                 max_jobs >>= 1;
 314         } while (max_jobs);
 315
 316 #ifndef CONFIG_NO_SHM
 317         if (shm_id == -1)
 318                 return 1;
 319
 320         threads = shmat(shm_id, NULL, 0);
 321         if (threads == (void *) -1) {
 322                 perror("shmat");
 323                 return 1;
 324         }
 325 #endif
 326
 327         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 328         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 329         fio_debug_jobp = (void *) hash + file_hash_size;
 330         *fio_debug_jobp = -1;
 331         file_hash_init(hash);
 332
 333         flow_init();
 334
 335         return 0;
 336 }
 337
 338 static void set_cmd_options(struct thread_data *td)
 339 {
 340         struct thread_options *o = &td->o;
 341
 342         if (!o->timeout)
 343                 o->timeout = def_timeout;
 344 }
 345
 346 /*
 347  * Return a free job structure.
 348  */
 349 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 350                                        int preserve_eo, const char *jobname)
 351 {
 352         struct thread_data *td;
 353
 354         if (global) {
 355                 set_cmd_options(&def_thread);
 356                 return &def_thread;
 357         }
 358         if (setup_thread_area()) {
 359                 log_err("error: failed to setup shm segment\n");
 360                 return NULL;
 361         }
 362         if (thread_number >= max_jobs) {
 363                 log_err("error: maximum number of jobs (%d) reached.\n",
 364                                 max_jobs);
 365                 return NULL;
 366         }
 367
 368         td = &threads[thread_number++];
 369         *td = *parent;
 370
 371         td->io_ops = NULL;
 372         if (!preserve_eo)
 373                 td->eo = NULL;
 374
 375         td->o.uid = td->o.gid = -1U;
 376
 377         dup_files(td, parent);
 378         fio_options_mem_dupe(td);
 379
 380         profile_add_hooks(td);
 381
 382         td->thread_number = thread_number;
 383         td->subjob_number = 0;
 384
 385         if (jobname)
 386                 td->o.name = strdup(jobname);
 387
 388         if (!parent->o.group_reporting)
 389                 stat_number++;
 390
 391         set_cmd_options(td);
 392         return td;
 393 }
 394
 395 static void put_job(struct thread_data *td)
 396 {
 397         if (td == &def_thread)
 398                 return;
 399
 400         profile_td_exit(td);
 401         flow_exit_job(td);
 402
 403         if (td->error)
 404                 log_info("fio: %s\n", td->verror);
 405
 406         fio_options_free(td);
 407         if (td->io_ops)
 408                 free_ioengine(td);
 409
 410         if (td->o.name)
 411                 free(td->o.name);
 412
 413         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 414         thread_number--;
 415 }
 416
 417 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 418 {
 419         unsigned int bs = td->o.min_bs[ddir];
 420
 421         assert(ddir_rw(ddir));
 422
 423         if (td->o.rate[ddir])
 424                 td->rate_bps[ddir] = td->o.rate[ddir];
 425         else
 426                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 427
 428         if (!td->rate_bps[ddir]) {
 429                 log_err("rate lower than supported\n");
 430                 return -1;
 431         }
 432
 433         td->rate_pending_usleep[ddir] = 0;
 434         return 0;
 435 }
 436
 437 static int setup_rate(struct thread_data *td)
 438 {
 439         int ret = 0;
 440
 441         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 442                 ret = __setup_rate(td, DDIR_READ);
 443         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 444                 ret |= __setup_rate(td, DDIR_WRITE);
 445         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 446                 ret |= __setup_rate(td, DDIR_TRIM);
 447
 448         return ret;
 449 }
 450
 451 static int fixed_block_size(struct thread_options *o)
 452 {
 453         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 454                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 455                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 456                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 457                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 458 }
 459
 460
 461 static unsigned long long get_rand_start_delay(struct thread_data *td)
 462 {
 463         unsigned long long delayrange;
 464         unsigned long r;
 465
 466         delayrange = td->o.start_delay_high - td->o.start_delay;
 467
 468         if (td->o.use_os_rand) {
 469                 r = os_random_long(&td->delay_state);
 470                 delayrange = (unsigned long long) ((double) delayrange * (r / (OS_RAND_MAX + 1.0)));
 471         } else {
 472                 r = __rand(&td->__delay_state);
 473                 delayrange = (unsigned long long) ((double) delayrange * (r / (FRAND_MAX + 1.0)));
 474         }
 475
 476         delayrange += td->o.start_delay;
 477         return delayrange;
 478 }
 479
 480 /*
 481  * Lazy way of fixing up options that depend on each other. We could also
 482  * define option callback handlers, but this is easier.
 483  */
 484 static int fixup_options(struct thread_data *td)
 485 {
 486         struct thread_options *o = &td->o;
 487         int ret = 0;
 488
 489 #ifndef FIO_HAVE_PSHARED_MUTEX
 490         if (!o->use_thread) {
 491                 log_info("fio: this platform does not support process shared"
 492                          " mutexes, forcing use of threads. Use the 'thread'"
 493                          " option to get rid of this warning.\n");
 494                 o->use_thread = 1;
 495                 ret = warnings_fatal;
 496         }
 497 #endif
 498
 499         if (o->write_iolog_file && o->read_iolog_file) {
 500                 log_err("fio: read iolog overrides write_iolog\n");
 501                 free(o->write_iolog_file);
 502                 o->write_iolog_file = NULL;
 503                 ret = warnings_fatal;
 504         }
 505
 506         /*
 507          * only really works with 1 file
 508          */
 509         if (o->zone_size && o->open_files > 1)
 510                 o->zone_size = 0;
 511
 512         /*
 513          * If zone_range isn't specified, backward compatibility dictates it
 514          * should be made equal to zone_size.
 515          */
 516         if (o->zone_size && !o->zone_range)
 517                 o->zone_range = o->zone_size;
 518
 519         /*
 520          * Reads can do overwrites, we always need to pre-create the file
 521          */
 522         if (td_read(td) || td_rw(td))
 523                 o->overwrite = 1;
 524
 525         if (!o->min_bs[DDIR_READ])
 526                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 527         if (!o->max_bs[DDIR_READ])
 528                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 529         if (!o->min_bs[DDIR_WRITE])
 530                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 531         if (!o->max_bs[DDIR_WRITE])
 532                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 533         if (!o->min_bs[DDIR_TRIM])
 534                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 535         if (!o->max_bs[DDIR_TRIM])
 536                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 537
 538
 539         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 540         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 541
 542         /*
 543          * For random IO, allow blockalign offset other than min_bs.
 544          */
 545         if (!o->ba[DDIR_READ] || !td_random(td))
 546                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 547         if (!o->ba[DDIR_WRITE] || !td_random(td))
 548                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 549         if (!o->ba[DDIR_TRIM] || !td_random(td))
 550                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 551
 552         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 553             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 554             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 555             !o->norandommap) {
 556                 log_err("fio: Any use of blockalign= turns off randommap\n");
 557                 o->norandommap = 1;
 558                 ret = warnings_fatal;
 559         }
 560
 561         if (!o->file_size_high)
 562                 o->file_size_high = o->file_size_low;
 563
 564         if (o->start_delay_high)
 565                 o->start_delay = get_rand_start_delay(td);
 566
 567         if (o->norandommap && o->verify != VERIFY_NONE
 568             && !fixed_block_size(o))  {
 569                 log_err("fio: norandommap given for variable block sizes, "
 570                         "verify disabled\n");
 571                 o->verify = VERIFY_NONE;
 572                 ret = warnings_fatal;
 573         }
 574         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 575                 log_err("fio: bs_unaligned may not work with raw io\n");
 576
 577         /*
 578          * thinktime_spin must be less than thinktime
 579          */
 580         if (o->thinktime_spin > o->thinktime)
 581                 o->thinktime_spin = o->thinktime;
 582
 583         /*
 584          * The low water mark cannot be bigger than the iodepth
 585          */
 586         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 587                 o->iodepth_low = o->iodepth;
 588
 589         /*
 590          * If batch number isn't set, default to the same as iodepth
 591          */
 592         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 593                 o->iodepth_batch = o->iodepth;
 594
 595         if (o->nr_files > td->files_index)
 596                 o->nr_files = td->files_index;
 597
 598         if (o->open_files > o->nr_files || !o->open_files)
 599                 o->open_files = o->nr_files;
 600
 601         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 602             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 603             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 604             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 605                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 606                 ret = 1;
 607         }
 608         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 609             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 610             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 611             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 612             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 613             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 614                 log_err("fio: minimum rate exceeds rate\n");
 615                 ret = 1;
 616         }
 617
 618         if (!o->timeout && o->time_based) {
 619                 log_err("fio: time_based requires a runtime/timeout setting\n");
 620                 o->time_based = 0;
 621                 ret = warnings_fatal;
 622         }
 623
 624         if (o->fill_device && !o->size)
 625                 o->size = -1ULL;
 626
 627         if (o->verify != VERIFY_NONE) {
 628                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 629                         log_info("Multiple writers may overwrite blocks that "
 630                                 "belong to other jobs. This can cause "
 631                                 "verification failures.\n");
 632                         ret = warnings_fatal;
 633                 }
 634
 635                 o->refill_buffers = 1;
 636                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 637                     !o->verify_interval)
 638                         o->verify_interval = o->min_bs[DDIR_WRITE];
 639
 640                 /*
 641                  * Verify interval must be smaller or equal to the
 642                  * write size.
 643                  */
 644                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 645                         o->verify_interval = o->min_bs[DDIR_WRITE];
 646                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 647                         o->verify_interval = o->min_bs[DDIR_READ];
 648         }
 649
 650         if (o->pre_read) {
 651                 o->invalidate_cache = 0;
 652                 if (td->io_ops->flags & FIO_PIPEIO) {
 653                         log_info("fio: cannot pre-read files with an IO engine"
 654                                  " that isn't seekable. Pre-read disabled.\n");
 655                         ret = warnings_fatal;
 656                 }
 657         }
 658
 659         if (!o->unit_base) {
 660                 if (td->io_ops->flags & FIO_BIT_BASED)
 661                         o->unit_base = 1;
 662                 else
 663                         o->unit_base = 8;
 664         }
 665
 666 #ifndef CONFIG_FDATASYNC
 667         if (o->fdatasync_blocks) {
 668                 log_info("fio: this platform does not support fdatasync()"
 669                          " falling back to using fsync().  Use the 'fsync'"
 670                          " option instead of 'fdatasync' to get rid of"
 671                          " this warning\n");
 672                 o->fsync_blocks = o->fdatasync_blocks;
 673                 o->fdatasync_blocks = 0;
 674                 ret = warnings_fatal;
 675         }
 676 #endif
 677
 678 #ifdef WIN32
 679         /*
 680          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 681          * so fail if we're passed those flags
 682          */
 683         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 684                 log_err("fio: Windows does not support direct or non-buffered io with"
 685                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 686                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 687                 ret = 1;
 688         }
 689 #endif
 690
 691         /*
 692          * For fully compressible data, just zero them at init time.
 693          * It's faster than repeatedly filling it.
 694          */
 695         if (td->o.compress_percentage == 100) {
 696                 td->o.zero_buffers = 1;
 697                 td->o.compress_percentage = 0;
 698         }
 699
 700         /*
 701          * Using a non-uniform random distribution excludes usage of
 702          * a random map
 703          */
 704         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
 705                 td->o.norandommap = 1;
 706
 707         /*
 708          * If size is set but less than the min block size, complain
 709          */
 710         if (o->size && o->size < td_min_bs(td)) {
 711                 log_err("fio: size too small, must be larger than the IO size: %llu\n", (unsigned long long) o->size);
 712                 ret = 1;
 713         }
 714
 715         /*
 716          * O_ATOMIC implies O_DIRECT
 717          */
 718         if (td->o.oatomic)
 719                 td->o.odirect = 1;
 720
 721         /*
 722          * If randseed is set, that overrides randrepeat
 723          */
 724         if (td->o.rand_seed)
 725                 td->o.rand_repeatable = 0;
 726
 727         if ((td->io_ops->flags & FIO_NOEXTEND) && td->o.file_append) {
 728                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 729                 ret = 1;
 730         }
 731
 732         return ret;
 733 }
 734
 735 /*
 736  * This function leaks the buffer
 737  */
 738 char *fio_uint_to_kmg(unsigned int val)
 739 {
 740         char *buf = malloc(32);
 741         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 742         char *p = post;
 743
 744         do {
 745                 if (val & 1023)
 746                         break;
 747
 748                 val >>= 10;
 749                 p++;
 750         } while (*p);
 751
 752         snprintf(buf, 32, "%u%c", val, *p);
 753         return buf;
 754 }
 755
 756 /* External engines are specified by "external:name.o") */
 757 static const char *get_engine_name(const char *str)
 758 {
 759         char *p = strstr(str, ":");
 760
 761         if (!p)
 762                 return str;
 763
 764         p++;
 765         strip_blank_front(&p);
 766         strip_blank_end(p);
 767         return p;
 768 }
 769
 770 static int exists_and_not_file(const char *filename)
 771 {
 772         struct stat sb;
 773
 774         if (lstat(filename, &sb) == -1)
 775                 return 0;
 776
 777         /* \\.\ is the device namespace in Windows, where every file
 778          * is a device node */
 779         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 780                 return 0;
 781
 782         return 1;
 783 }
 784
 785 static void td_fill_rand_seeds_os(struct thread_data *td)
 786 {
 787         os_random_seed(td->rand_seeds[FIO_RAND_BS_OFF], &td->bsrange_state);
 788         os_random_seed(td->rand_seeds[FIO_RAND_VER_OFF], &td->verify_state);
 789         os_random_seed(td->rand_seeds[FIO_RAND_MIX_OFF], &td->rwmix_state);
 790
 791         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 792                 os_random_seed(td->rand_seeds[FIO_RAND_FILE_OFF], &td->next_file_state);
 793
 794         os_random_seed(td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], &td->file_size_state);
 795         os_random_seed(td->rand_seeds[FIO_RAND_TRIM_OFF], &td->trim_state);
 796         os_random_seed(td->rand_seeds[FIO_RAND_START_DELAY], &td->delay_state);
 797
 798         if (!td_random(td))
 799                 return;
 800
 801         if (td->o.rand_repeatable)
 802                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 803
 804         os_random_seed(td->rand_seeds[FIO_RAND_BLOCK_OFF], &td->random_state);
 805
 806         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], &td->seq_rand_state[DDIR_READ]);
 807         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF], &td->seq_rand_state[DDIR_WRITE]);
 808         os_random_seed(td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF], &td->seq_rand_state[DDIR_TRIM]);
 809 }
 810
 811 static void td_fill_rand_seeds_internal(struct thread_data *td)
 812 {
 813         init_rand_seed(&td->__bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
 814         init_rand_seed(&td->__verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
 815         init_rand_seed(&td->__rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
 816
 817         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 818                 init_rand_seed(&td->__next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
 819
 820         init_rand_seed(&td->__file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
 821         init_rand_seed(&td->__trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
 822         init_rand_seed(&td->__delay_state, td->rand_seeds[FIO_RAND_START_DELAY]);
 823
 824         if (!td_random(td))
 825                 return;
 826
 827         if (td->o.rand_repeatable)
 828                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 829
 830         init_rand_seed(&td->__random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
 831         init_rand_seed(&td->__seq_rand_state[DDIR_READ], td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF]);
 832         init_rand_seed(&td->__seq_rand_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF]);
 833         init_rand_seed(&td->__seq_rand_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF]);
 834 }
 835
 836 void td_fill_rand_seeds(struct thread_data *td)
 837 {
 838         if (td->o.allrand_repeatable) {
 839                 unsigned int i;
 840
 841                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
 842                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
 843                                 + i;
 844         }
 845
 846         if (td->o.use_os_rand)
 847                 td_fill_rand_seeds_os(td);
 848         else
 849                 td_fill_rand_seeds_internal(td);
 850
 851         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
 852         frand_copy(&td->buf_state_prev, &td->buf_state);
 853
 854         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF]);
 855 }
 856
 857 /*
 858  * Initializes the ioengine configured for a job, if it has not been done so
 859  * already.
 860  */
 861 int ioengine_load(struct thread_data *td)
 862 {
 863         const char *engine;
 864
 865         /*
 866          * Engine has already been loaded.
 867          */
 868         if (td->io_ops)
 869                 return 0;
 870         if (!td->o.ioengine) {
 871                 log_err("fio: internal fault, no IO engine specified\n");
 872                 return 1;
 873         }
 874
 875         engine = get_engine_name(td->o.ioengine);
 876         td->io_ops = load_ioengine(td, engine);
 877         if (!td->io_ops) {
 878                 log_err("fio: failed to load engine %s\n", engine);
 879                 return 1;
 880         }
 881
 882         if (td->io_ops->option_struct_size && td->io_ops->options) {
 883                 /*
 884                  * In cases where td->eo is set, clone it for a child thread.
 885                  * This requires that the parent thread has the same ioengine,
 886                  * but that requirement must be enforced by the code which
 887                  * cloned the thread.
 888                  */
 889                 void *origeo = td->eo;
 890                 /*
 891                  * Otherwise use the default thread options.
 892                  */
 893                 if (!origeo && td != &def_thread && def_thread.eo &&
 894                     def_thread.io_ops->options == td->io_ops->options)
 895                         origeo = def_thread.eo;
 896
 897                 options_init(td->io_ops->options);
 898                 td->eo = malloc(td->io_ops->option_struct_size);
 899                 /*
 900                  * Use the default thread as an option template if this uses the
 901                  * same options structure and there are non-default options
 902                  * used.
 903                  */
 904                 if (origeo) {
 905                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 906                         options_mem_dupe(td->eo, td->io_ops->options);
 907                 } else {
 908                         memset(td->eo, 0, td->io_ops->option_struct_size);
 909                         fill_default_options(td->eo, td->io_ops->options);
 910                 }
 911                 *(struct thread_data **)td->eo = td;
 912         }
 913
 914         return 0;
 915 }
 916
 917 static void init_flags(struct thread_data *td)
 918 {
 919         struct thread_options *o = &td->o;
 920
 921         if (o->verify_backlog)
 922                 td->flags |= TD_F_VER_BACKLOG;
 923         if (o->trim_backlog)
 924                 td->flags |= TD_F_TRIM_BACKLOG;
 925         if (o->read_iolog_file)
 926                 td->flags |= TD_F_READ_IOLOG;
 927         if (o->refill_buffers)
 928                 td->flags |= TD_F_REFILL_BUFFERS;
 929         if (o->scramble_buffers)
 930                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
 931         if (o->verify != VERIFY_NONE)
 932                 td->flags |= TD_F_VER_NONE;
 933 }
 934
 935 static int setup_random_seeds(struct thread_data *td)
 936 {
 937         unsigned long seed;
 938         unsigned int i;
 939
 940         if (!td->o.rand_repeatable && !td->o.rand_seed)
 941                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
 942
 943         if (!td->o.rand_seed)
 944                 seed = 0x89;
 945         else
 946                 seed = td->o.rand_seed;
 947
 948         for (i = 0; i < 4; i++)
 949                 seed *= 0x9e370001UL;
 950
 951         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
 952                 td->rand_seeds[i] = seed;
 953                 seed *= 0x9e370001UL;
 954         }
 955
 956         td_fill_rand_seeds(td);
 957         return 0;
 958 }
 959
 960 enum {
 961         FPRE_NONE = 0,
 962         FPRE_JOBNAME,
 963         FPRE_JOBNUM,
 964         FPRE_FILENUM
 965 };
 966
 967 static struct fpre_keyword {
 968         const char *keyword;
 969         size_t strlen;
 970         int key;
 971 } fpre_keywords[] = {
 972         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
 973         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
 974         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
 975         { .keyword = NULL, },
 976         };
 977
 978 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
 979                            const char *jobname, int jobnum, int filenum)
 980 {
 981         struct fpre_keyword *f;
 982         char copy[PATH_MAX];
 983         size_t dst_left = PATH_MAX - 1;
 984
 985         if (!o->filename_format || !strlen(o->filename_format)) {
 986                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
 987                 return NULL;
 988         }
 989
 990         for (f = &fpre_keywords[0]; f->keyword; f++)
 991                 f->strlen = strlen(f->keyword);
 992
 993         buf[buf_size - 1] = '\0';
 994         strncpy(buf, o->filename_format, buf_size - 1);
 995
 996         memset(copy, 0, sizeof(copy));
 997         for (f = &fpre_keywords[0]; f->keyword; f++) {
 998                 do {
 999                         size_t pre_len, post_start = 0;
1000                         char *str, *dst = copy;
1001
1002                         str = strcasestr(buf, f->keyword);
1003                         if (!str)
1004                                 break;
1005
1006                         pre_len = str - buf;
1007                         if (strlen(str) != f->strlen)
1008                                 post_start = pre_len + f->strlen;
1009
1010                         if (pre_len) {
1011                                 strncpy(dst, buf, pre_len);
1012                                 dst += pre_len;
1013                                 dst_left -= pre_len;
1014                         }
1015
1016                         switch (f->key) {
1017                         case FPRE_JOBNAME: {
1018                                 int ret;
1019
1020                                 ret = snprintf(dst, dst_left, "%s", jobname);
1021                                 if (ret < 0)
1022                                         break;
1023                                 dst += ret;
1024                                 dst_left -= ret;
1025                                 break;
1026                                 }
1027                         case FPRE_JOBNUM: {
1028                                 int ret;
1029
1030                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1031                                 if (ret < 0)
1032                                         break;
1033                                 dst += ret;
1034                                 dst_left -= ret;
1035                                 break;
1036                                 }
1037                         case FPRE_FILENUM: {
1038                                 int ret;
1039
1040                                 ret = snprintf(dst, dst_left, "%d", filenum);
1041                                 if (ret < 0)
1042                                         break;
1043                                 dst += ret;
1044                                 dst_left -= ret;
1045                                 break;
1046                                 }
1047                         default:
1048                                 assert(0);
1049                                 break;
1050                         }
1051
1052                         if (post_start)
1053                                 strncpy(dst, buf + post_start, dst_left);
1054
1055                         strncpy(buf, copy, buf_size - 1);
1056                 } while (1);
1057         }
1058
1059         return buf;
1060 }
1061
1062 int parse_dryrun(void)
1063 {
1064         return dump_cmdline || parse_only;
1065 }
1066
1067 /*
1068  * Adds a job to the list of things todo. Sanitizes the various options
1069  * to make sure we don't have conflicts, and initializes various
1070  * members of td.
1071  */
1072 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1073                    int recursed, int client_type)
1074 {
1075         unsigned int i;
1076         char fname[PATH_MAX];
1077         int numjobs, file_alloced;
1078         struct thread_options *o = &td->o;
1079         char logname[PATH_MAX + 32];
1080
1081         /*
1082          * the def_thread is just for options, it's not a real job
1083          */
1084         if (td == &def_thread)
1085                 return 0;
1086
1087         init_flags(td);
1088
1089         /*
1090          * if we are just dumping the output command line, don't add the job
1091          */
1092         if (parse_dryrun()) {
1093                 put_job(td);
1094                 return 0;
1095         }
1096
1097         td->client_type = client_type;
1098
1099         if (profile_td_init(td))
1100                 goto err;
1101
1102         if (ioengine_load(td))
1103                 goto err;
1104
1105         if (o->odirect)
1106                 td->io_ops->flags |= FIO_RAWIO;
1107
1108         file_alloced = 0;
1109         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1110                 file_alloced = 1;
1111
1112                 if (o->nr_files == 1 && exists_and_not_file(jobname))
1113                         add_file(td, jobname, job_add_num, 0);
1114                 else {
1115                         for (i = 0; i < o->nr_files; i++)
1116                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1117                 }
1118         }
1119
1120         if (fixup_options(td))
1121                 goto err;
1122
1123         flow_init_job(td);
1124
1125         /*
1126          * IO engines only need this for option callbacks, and the address may
1127          * change in subprocesses.
1128          */
1129         if (td->eo)
1130                 *(struct thread_data **)td->eo = NULL;
1131
1132         if (td->io_ops->flags & FIO_DISKLESSIO) {
1133                 struct fio_file *f;
1134
1135                 for_each_file(td, f, i)
1136                         f->real_file_size = -1ULL;
1137         }
1138
1139         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1140
1141         td->ts.clat_percentiles = o->clat_percentiles;
1142         td->ts.percentile_precision = o->percentile_precision;
1143         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1144
1145         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1146                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1147                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1148                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1149                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1150         }
1151         td->ddir_seq_nr = o->ddir_seq_nr;
1152
1153         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1154                 prev_group_jobs = 0;
1155                 groupid++;
1156         }
1157
1158         td->groupid = groupid;
1159         prev_group_jobs++;
1160
1161         if (setup_random_seeds(td)) {
1162                 td_verror(td, errno, "init_random_state");
1163                 goto err;
1164         }
1165
1166         if (setup_rate(td))
1167                 goto err;
1168
1169         if (o->lat_log_file) {
1170                 struct log_params p = {
1171                         .td = td,
1172                         .avg_msec = o->log_avg_msec,
1173                         .log_type = IO_LOG_TYPE_LAT,
1174                         .log_offset = o->log_offset,
1175                         .log_gz = o->log_gz,
1176                         .log_gz_store = o->log_gz_store,
1177                 };
1178                 const char *suf;
1179
1180                 if (p.log_gz_store)
1181                         suf = "log.fz";
1182                 else
1183                         suf = "log";
1184
1185                 snprintf(logname, sizeof(logname), "%s_lat.%d.%s",
1186                                 o->lat_log_file, td->thread_number, suf);
1187                 setup_log(&td->lat_log, &p, logname);
1188                 snprintf(logname, sizeof(logname), "%s_slat.%d.%s",
1189                                 o->lat_log_file, td->thread_number, suf);
1190                 setup_log(&td->slat_log, &p, logname);
1191                 snprintf(logname, sizeof(logname), "%s_clat.%d.%s",
1192                                 o->lat_log_file, td->thread_number, suf);
1193                 setup_log(&td->clat_log, &p, logname);
1194         }
1195         if (o->bw_log_file) {
1196                 struct log_params p = {
1197                         .td = td,
1198                         .avg_msec = o->log_avg_msec,
1199                         .log_type = IO_LOG_TYPE_BW,
1200                         .log_offset = o->log_offset,
1201                         .log_gz = o->log_gz,
1202                         .log_gz_store = o->log_gz_store,
1203                 };
1204                 const char *suf;
1205
1206                 if (p.log_gz_store)
1207                         suf = "log.fz";
1208                 else
1209                         suf = "log";
1210
1211                 snprintf(logname, sizeof(logname), "%s_bw.%d.%s",
1212                                 o->bw_log_file, td->thread_number, suf);
1213                 setup_log(&td->bw_log, &p, logname);
1214         }
1215         if (o->iops_log_file) {
1216                 struct log_params p = {
1217                         .td = td,
1218                         .avg_msec = o->log_avg_msec,
1219                         .log_type = IO_LOG_TYPE_IOPS,
1220                         .log_offset = o->log_offset,
1221                         .log_gz = o->log_gz,
1222                         .log_gz_store = o->log_gz_store,
1223                 };
1224                 const char *suf;
1225
1226                 if (p.log_gz_store)
1227                         suf = "log.fz";
1228                 else
1229                         suf = "log";
1230
1231                 snprintf(logname, sizeof(logname), "%s_iops.%d.%s",
1232                                 o->iops_log_file, td->thread_number, suf);
1233                 setup_log(&td->iops_log, &p, logname);
1234         }
1235
1236         if (!o->name)
1237                 o->name = strdup(jobname);
1238
1239         if (output_format == FIO_OUTPUT_NORMAL) {
1240                 if (!job_add_num) {
1241                         if (is_backend && !recursed)
1242                                 fio_server_send_add_job(td);
1243
1244                         if (!(td->io_ops->flags & FIO_NOIO)) {
1245                                 char *c1, *c2, *c3, *c4;
1246                                 char *c5 = NULL, *c6 = NULL;
1247
1248                                 c1 = fio_uint_to_kmg(o->min_bs[DDIR_READ]);
1249                                 c2 = fio_uint_to_kmg(o->max_bs[DDIR_READ]);
1250                                 c3 = fio_uint_to_kmg(o->min_bs[DDIR_WRITE]);
1251                                 c4 = fio_uint_to_kmg(o->max_bs[DDIR_WRITE]);
1252
1253                                 if (!o->bs_is_seq_rand) {
1254                                         c5 = fio_uint_to_kmg(o->min_bs[DDIR_TRIM]);
1255                                         c6 = fio_uint_to_kmg(o->max_bs[DDIR_TRIM]);
1256                                 }
1257
1258                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1259                                                         td->groupid,
1260                                                         ddir_str(o->td_ddir));
1261
1262                                 if (o->bs_is_seq_rand)
1263                                         log_info("bs(seq/rand)=%s-%s/%s-%s, ",
1264                                                         c1, c2, c3, c4);
1265                                 else
1266                                         log_info("bs=%s-%s/%s-%s/%s-%s, ",
1267                                                         c1, c2, c3, c4, c5, c6);
1268
1269                                 log_info("ioengine=%s, iodepth=%u\n",
1270                                                 td->io_ops->name, o->iodepth);
1271
1272                                 free(c1);
1273                                 free(c2);
1274                                 free(c3);
1275                                 free(c4);
1276                                 free(c5);
1277                                 free(c6);
1278                         }
1279                 } else if (job_add_num == 1)
1280                         log_info("...\n");
1281         }
1282
1283         /*
1284          * recurse add identical jobs, clear numjobs and stonewall options
1285          * as they don't apply to sub-jobs
1286          */
1287         numjobs = o->numjobs;
1288         while (--numjobs) {
1289                 struct thread_data *td_new = get_new_job(0, td, 1, jobname);
1290
1291                 if (!td_new)
1292                         goto err;
1293
1294                 td_new->o.numjobs = 1;
1295                 td_new->o.stonewall = 0;
1296                 td_new->o.new_group = 0;
1297                 td_new->subjob_number = numjobs;
1298
1299                 if (file_alloced) {
1300                         if (td_new->files) {
1301                                 struct fio_file *f;
1302                                 for_each_file(td_new, f, i) {
1303                                         if (f->file_name)
1304                                                 sfree(f->file_name);
1305                                         sfree(f);
1306                                 }
1307                                 free(td_new->files);
1308                                 td_new->files = NULL;
1309                         }
1310                         td_new->files_index = 0;
1311                         td_new->files_size = 0;
1312                         if (td_new->o.filename) {
1313                                 free(td_new->o.filename);
1314                                 td_new->o.filename = NULL;
1315                         }
1316                 }
1317
1318                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1319                         goto err;
1320         }
1321
1322         return 0;
1323 err:
1324         put_job(td);
1325         return -1;
1326 }
1327
1328 /*
1329  * Parse as if 'o' was a command line
1330  */
1331 void add_job_opts(const char **o, int client_type)
1332 {
1333         struct thread_data *td, *td_parent;
1334         int i, in_global = 1;
1335         char jobname[32];
1336
1337         i = 0;
1338         td_parent = td = NULL;
1339         while (o[i]) {
1340                 if (!strncmp(o[i], "name", 4)) {
1341                         in_global = 0;
1342                         if (td)
1343                                 add_job(td, jobname, 0, 0, client_type);
1344                         td = NULL;
1345                         sprintf(jobname, "%s", o[i] + 5);
1346                 }
1347                 if (in_global && !td_parent)
1348                         td_parent = get_new_job(1, &def_thread, 0, jobname);
1349                 else if (!in_global && !td) {
1350                         if (!td_parent)
1351                                 td_parent = &def_thread;
1352                         td = get_new_job(0, td_parent, 0, jobname);
1353                 }
1354                 if (in_global)
1355                         fio_options_parse(td_parent, (char **) &o[i], 1, 0);
1356                 else
1357                         fio_options_parse(td, (char **) &o[i], 1, 0);
1358                 i++;
1359         }
1360
1361         if (td)
1362                 add_job(td, jobname, 0, 0, client_type);
1363 }
1364
1365 static int skip_this_section(const char *name)
1366 {
1367         int i;
1368
1369         if (!nr_job_sections)
1370                 return 0;
1371         if (!strncmp(name, "global", 6))
1372                 return 0;
1373
1374         for (i = 0; i < nr_job_sections; i++)
1375                 if (!strcmp(job_sections[i], name))
1376                         return 0;
1377
1378         return 1;
1379 }
1380
1381 static int is_empty_or_comment(char *line)
1382 {
1383         unsigned int i;
1384
1385         for (i = 0; i < strlen(line); i++) {
1386                 if (line[i] == ';')
1387                         return 1;
1388                 if (line[i] == '#')
1389                         return 1;
1390                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1391                         return 0;
1392         }
1393
1394         return 1;
1395 }
1396
1397 /*
1398  * This is our [ini] type file parser.
1399  */
1400 int __parse_jobs_ini(struct thread_data *td,
1401                 char *file, int is_buf, int stonewall_flag, int type,
1402                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1403 {
1404         unsigned int global = 0;
1405         char *string;
1406         FILE *f;
1407         char *p;
1408         int ret = 0, stonewall;
1409         int first_sect = 1;
1410         int skip_fgets = 0;
1411         int inside_skip = 0;
1412         char **opts;
1413         int i, alloc_opts, num_opts;
1414
1415         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1416         assert(td || !nested);
1417
1418         if (is_buf)
1419                 f = NULL;
1420         else {
1421                 if (!strcmp(file, "-"))
1422                         f = stdin;
1423                 else
1424                         f = fopen(file, "r");
1425
1426                 if (!f) {
1427                         perror("fopen job file");
1428                         return 1;
1429                 }
1430         }
1431
1432         string = malloc(4096);
1433
1434         /*
1435          * it's really 256 + small bit, 280 should suffice
1436          */
1437         if (!nested) {
1438                 name = malloc(280);
1439                 memset(name, 0, 280);
1440         }
1441
1442         opts = NULL;
1443         if (nested && popts) {
1444                 opts = *popts;
1445                 alloc_opts = *aopts;
1446                 num_opts = *nopts;
1447         }
1448
1449         if (!opts) {
1450                 alloc_opts = 8;
1451                 opts = malloc(sizeof(char *) * alloc_opts);
1452                 num_opts = 0;
1453         }
1454
1455         stonewall = stonewall_flag;
1456         do {
1457                 /*
1458                  * if skip_fgets is set, we already have loaded a line we
1459                  * haven't handled.
1460                  */
1461                 if (!skip_fgets) {
1462                         if (is_buf)
1463                                 p = strsep(&file, "\n");
1464                         else
1465                                 p = fgets(string, 4096, f);
1466                         if (!p)
1467                                 break;
1468                 }
1469
1470                 skip_fgets = 0;
1471                 strip_blank_front(&p);
1472                 strip_blank_end(p);
1473
1474                 dprint(FD_PARSE, "%s\n", p);
1475                 if (is_empty_or_comment(p))
1476                         continue;
1477
1478                 if (!nested) {
1479                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1480                                 if (inside_skip)
1481                                         continue;
1482
1483                                 log_err("fio: option <%s> outside of "
1484                                         "[] job section\n", p);
1485                                 ret = 1;
1486                                 break;
1487                         }
1488
1489                         name[strlen(name) - 1] = '\0';
1490
1491                         if (skip_this_section(name)) {
1492                                 inside_skip = 1;
1493                                 continue;
1494                         } else
1495                                 inside_skip = 0;
1496
1497                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1498
1499                         global = !strncmp(name, "global", 6);
1500
1501                         if (dump_cmdline) {
1502                                 if (first_sect)
1503                                         log_info("fio ");
1504                                 if (!global)
1505                                         log_info("--name=%s ", name);
1506                                 first_sect = 0;
1507                         }
1508
1509                         td = get_new_job(global, &def_thread, 0, name);
1510                         if (!td) {
1511                                 ret = 1;
1512                                 break;
1513                         }
1514
1515                         /*
1516                          * Separate multiple job files by a stonewall
1517                          */
1518                         if (!global && stonewall) {
1519                                 td->o.stonewall = stonewall;
1520                                 stonewall = 0;
1521                         }
1522
1523                         num_opts = 0;
1524                         memset(opts, 0, alloc_opts * sizeof(char *));
1525                 }
1526                 else
1527                         skip_fgets = 1;
1528
1529                 while (1) {
1530                         if (!skip_fgets) {
1531                                 if (is_buf)
1532                                         p = strsep(&file, "\n");
1533                                 else
1534                                         p = fgets(string, 4096, f);
1535                                 if (!p)
1536                                         break;
1537                                 dprint(FD_PARSE, "%s", p);
1538                         }
1539                         else
1540                                 skip_fgets = 0;
1541
1542                         if (is_empty_or_comment(p))
1543                                 continue;
1544
1545                         strip_blank_front(&p);
1546
1547                         /*
1548                          * new section, break out and make sure we don't
1549                          * fgets() a new line at the top.
1550                          */
1551                         if (p[0] == '[') {
1552                                 if (nested) {
1553                                         log_err("No new sections in included files\n");
1554                                         return 1;
1555                                 }
1556
1557                                 skip_fgets = 1;
1558                                 break;
1559                         }
1560
1561                         strip_blank_end(p);
1562
1563                         if (!strncmp(p, "include", strlen("include"))) {
1564                                 char *filename = p + strlen("include") + 1;
1565
1566                                 if ((ret = __parse_jobs_ini(td, filename,
1567                                                 is_buf, stonewall_flag, type, 1,
1568                                                 name, &opts, &alloc_opts, &num_opts))) {
1569                                         log_err("Error %d while parsing include file %s\n",
1570                                                 ret, filename);
1571                                         break;
1572                                 }
1573                                 continue;
1574                         }
1575
1576                         if (num_opts == alloc_opts) {
1577                                 alloc_opts <<= 1;
1578                                 opts = realloc(opts,
1579                                                 alloc_opts * sizeof(char *));
1580                         }
1581
1582                         opts[num_opts] = strdup(p);
1583                         num_opts++;
1584                 }
1585
1586                 if (nested) {
1587                         *popts = opts;
1588                         *aopts = alloc_opts;
1589                         *nopts = num_opts;
1590                         goto out;
1591                 }
1592
1593                 ret = fio_options_parse(td, opts, num_opts, dump_cmdline);
1594                 if (!ret)
1595                         ret = add_job(td, name, 0, 0, type);
1596                 else {
1597                         log_err("fio: job %s dropped\n", name);
1598                         put_job(td);
1599                 }
1600
1601                 for (i = 0; i < num_opts; i++)
1602                         free(opts[i]);
1603                 num_opts = 0;
1604         } while (!ret);
1605
1606         if (dump_cmdline)
1607                 log_info("\n");
1608
1609         i = 0;
1610         while (i < nr_job_sections) {
1611                 free(job_sections[i]);
1612                 i++;
1613         }
1614
1615         free(opts);
1616 out:
1617         free(string);
1618         if (!nested)
1619                 free(name);
1620         if (!is_buf && f != stdin)
1621                 fclose(f);
1622         return ret;
1623 }
1624
1625 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1626 {
1627         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
1628                         0, NULL, NULL, NULL, NULL);
1629 }
1630
1631 static int fill_def_thread(void)
1632 {
1633         memset(&def_thread, 0, sizeof(def_thread));
1634
1635         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1636         def_thread.o.error_dump = 1;
1637
1638         /*
1639          * fill default options
1640          */
1641         fio_fill_default_options(&def_thread);
1642         return 0;
1643 }
1644
1645 static void usage(const char *name)
1646 {
1647         printf("%s\n", fio_version_string);
1648         printf("%s [options] [job options] <job file(s)>\n", name);
1649         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1650                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1651                 "\t\t\tdiskutil,job,mutex,profile,time,net,rate,compress\n");
1652         printf("  --parse-only\t\tParse options only, don't start any IO\n");
1653         printf("  --output\t\tWrite output to file\n");
1654         printf("  --runtime\t\tRuntime in seconds\n");
1655         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1656         printf("  --minimal\t\tMinimal (terse) output\n");
1657         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1658         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1659         printf("  --version\t\tPrint version info and exit\n");
1660         printf("  --help\t\tPrint this page\n");
1661         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1662         printf("  --crctest\t\tTest speed of checksum functions\n");
1663         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1664                 " them\n");
1665         printf("  --enghelp=engine\tPrint ioengine help, or list"
1666                 " available ioengines\n");
1667         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1668                 " cmd\n");
1669         printf("  --showcmd\t\tTurn a job file into command line options\n");
1670         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1671         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1672         printf("  --eta-newline=time\tForce a new line for every 'time'");
1673         printf(" period passed\n");
1674         printf("  --status-interval=t\tForce full status dump every");
1675         printf(" 't' period passed\n");
1676         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1677                 " writes\n");
1678         printf("  --section=name\tOnly run specified section in job file\n");
1679         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1680                 " (def 1024)\n");
1681         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1682         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1683         printf("  --server=args\t\tStart a backend fio server\n");
1684         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1685         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1686         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
1687                 "\t\t\t(option=system,percpu) or run unit work\n"
1688                 "\t\t\tcalibration only (option=calibrate)\n");
1689 #ifdef CONFIG_ZLIB
1690         printf("  --inflate-log=log\tInflate and output compressed log\n");
1691 #endif
1692         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1693         printf("\n                   Jens Axboe <jaxboe@fusionio.com>");
1694         printf("\n                   Jens Axboe <axboe@fb.com>\n");
1695 }
1696
1697 #ifdef FIO_INC_DEBUG
1698 struct debug_level debug_levels[] = {
1699         { .name = "process",
1700           .help = "Process creation/exit logging",
1701           .shift = FD_PROCESS,
1702         },
1703         { .name = "file",
1704           .help = "File related action logging",
1705           .shift = FD_FILE,
1706         },
1707         { .name = "io",
1708           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1709           .shift = FD_IO,
1710         },
1711         { .name = "mem",
1712           .help = "Memory allocation/freeing logging",
1713           .shift = FD_MEM,
1714         },
1715         { .name = "blktrace",
1716           .help = "blktrace action logging",
1717           .shift = FD_BLKTRACE,
1718         },
1719         { .name = "verify",
1720           .help = "IO verification action logging",
1721           .shift = FD_VERIFY,
1722         },
1723         { .name = "random",
1724           .help = "Random generation logging",
1725           .shift = FD_RANDOM,
1726         },
1727         { .name = "parse",
1728           .help = "Parser logging",
1729           .shift = FD_PARSE,
1730         },
1731         { .name = "diskutil",
1732           .help = "Disk utility logging actions",
1733           .shift = FD_DISKUTIL,
1734         },
1735         { .name = "job",
1736           .help = "Logging related to creating/destroying jobs",
1737           .shift = FD_JOB,
1738         },
1739         { .name = "mutex",
1740           .help = "Mutex logging",
1741           .shift = FD_MUTEX
1742         },
1743         { .name = "profile",
1744           .help = "Logging related to profiles",
1745           .shift = FD_PROFILE,
1746         },
1747         { .name = "time",
1748           .help = "Logging related to time keeping functions",
1749           .shift = FD_TIME,
1750         },
1751         { .name = "net",
1752           .help = "Network logging",
1753           .shift = FD_NET,
1754         },
1755         { .name = "rate",
1756           .help = "Rate logging",
1757           .shift = FD_RATE,
1758         },
1759         { .name = "compress",
1760           .help = "Log compression logging",
1761           .shift = FD_COMPRESS,
1762         },
1763         { .name = NULL, },
1764 };
1765
1766 static int set_debug(const char *string)
1767 {
1768         struct debug_level *dl;
1769         char *p = (char *) string;
1770         char *opt;
1771         int i;
1772
1773         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1774                 log_info("fio: dumping debug options:");
1775                 for (i = 0; debug_levels[i].name; i++) {
1776                         dl = &debug_levels[i];
1777                         log_info("%s,", dl->name);
1778                 }
1779                 log_info("all\n");
1780                 return 1;
1781         }
1782
1783         while ((opt = strsep(&p, ",")) != NULL) {
1784                 int found = 0;
1785
1786                 if (!strncmp(opt, "all", 3)) {
1787                         log_info("fio: set all debug options\n");
1788                         fio_debug = ~0UL;
1789                         continue;
1790                 }
1791
1792                 for (i = 0; debug_levels[i].name; i++) {
1793                         dl = &debug_levels[i];
1794                         found = !strncmp(opt, dl->name, strlen(dl->name));
1795                         if (!found)
1796                                 continue;
1797
1798                         if (dl->shift == FD_JOB) {
1799                                 opt = strchr(opt, ':');
1800                                 if (!opt) {
1801                                         log_err("fio: missing job number\n");
1802                                         break;
1803                                 }
1804                                 opt++;
1805                                 fio_debug_jobno = atoi(opt);
1806                                 log_info("fio: set debug jobno %d\n",
1807                                                         fio_debug_jobno);
1808                         } else {
1809                                 log_info("fio: set debug option %s\n", opt);
1810                                 fio_debug |= (1UL << dl->shift);
1811                         }
1812                         break;
1813                 }
1814
1815                 if (!found)
1816                         log_err("fio: debug mask %s not found\n", opt);
1817         }
1818         return 0;
1819 }
1820 #else
1821 static int set_debug(const char *string)
1822 {
1823         log_err("fio: debug tracing not included in build\n");
1824         return 1;
1825 }
1826 #endif
1827
1828 static void fio_options_fill_optstring(void)
1829 {
1830         char *ostr = cmd_optstr;
1831         int i, c;
1832
1833         c = i = 0;
1834         while (l_opts[i].name) {
1835                 ostr[c++] = l_opts[i].val;
1836                 if (l_opts[i].has_arg == required_argument)
1837                         ostr[c++] = ':';
1838                 else if (l_opts[i].has_arg == optional_argument) {
1839                         ostr[c++] = ':';
1840                         ostr[c++] = ':';
1841                 }
1842                 i++;
1843         }
1844         ostr[c] = '\0';
1845 }
1846
1847 static int client_flag_set(char c)
1848 {
1849         int i;
1850
1851         i = 0;
1852         while (l_opts[i].name) {
1853                 int val = l_opts[i].val;
1854
1855                 if (c == (val & 0xff))
1856                         return (val & FIO_CLIENT_FLAG);
1857
1858                 i++;
1859         }
1860
1861         return 0;
1862 }
1863
1864 static void parse_cmd_client(void *client, char *opt)
1865 {
1866         fio_client_add_cmd_option(client, opt);
1867 }
1868
1869 int parse_cmd_line(int argc, char *argv[], int client_type)
1870 {
1871         struct thread_data *td = NULL;
1872         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1873         char *ostr = cmd_optstr;
1874         void *pid_file = NULL;
1875         void *cur_client = NULL;
1876         int backend = 0;
1877
1878         /*
1879          * Reset optind handling, since we may call this multiple times
1880          * for the backend.
1881          */
1882         optind = 1;
1883
1884         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1885                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1886                         parse_cmd_client(cur_client, argv[optind - 1]);
1887                         c &= ~FIO_CLIENT_FLAG;
1888                 }
1889
1890                 switch (c) {
1891                 case 'a':
1892                         smalloc_pool_size = atoi(optarg);
1893                         break;
1894                 case 't':
1895                         if (check_str_time(optarg, &def_timeout, 1)) {
1896                                 log_err("fio: failed parsing time %s\n", optarg);
1897                                 do_exit++;
1898                                 exit_val = 1;
1899                         }
1900                         break;
1901                 case 'l':
1902                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
1903                         do_exit++;
1904                         exit_val = 1;
1905                         break;
1906                 case 'b':
1907                         write_bw_log = 1;
1908                         break;
1909                 case 'o':
1910                         if (f_out && f_out != stdout)
1911                                 fclose(f_out);
1912
1913                         f_out = fopen(optarg, "w+");
1914                         if (!f_out) {
1915                                 perror("fopen output");
1916                                 exit(1);
1917                         }
1918                         f_err = f_out;
1919                         break;
1920                 case 'm':
1921                         output_format = FIO_OUTPUT_TERSE;
1922                         break;
1923                 case 'F':
1924                         if (!optarg) {
1925                                 log_err("fio: missing --output-format argument\n");
1926                                 exit_val = 1;
1927                                 do_exit++;
1928                                 break;
1929                         }
1930                         if (!strcmp(optarg, "minimal") ||
1931                             !strcmp(optarg, "terse") ||
1932                             !strcmp(optarg, "csv"))
1933                                 output_format = FIO_OUTPUT_TERSE;
1934                         else if (!strcmp(optarg, "json"))
1935                                 output_format = FIO_OUTPUT_JSON;
1936                         else
1937                                 output_format = FIO_OUTPUT_NORMAL;
1938                         break;
1939                 case 'f':
1940                         append_terse_output = 1;
1941                         break;
1942                 case 'h':
1943                         did_arg = 1;
1944                         if (!cur_client) {
1945                                 usage(argv[0]);
1946                                 do_exit++;
1947                         }
1948                         break;
1949                 case 'c':
1950                         did_arg = 1;
1951                         if (!cur_client) {
1952                                 fio_show_option_help(optarg);
1953                                 do_exit++;
1954                         }
1955                         break;
1956                 case 'i':
1957                         did_arg = 1;
1958                         if (!cur_client) {
1959                                 fio_show_ioengine_help(optarg);
1960                                 do_exit++;
1961                         }
1962                         break;
1963                 case 's':
1964                         did_arg = 1;
1965                         dump_cmdline = 1;
1966                         break;
1967                 case 'r':
1968                         read_only = 1;
1969                         break;
1970                 case 'v':
1971                         did_arg = 1;
1972                         if (!cur_client) {
1973                                 log_info("%s\n", fio_version_string);
1974                                 do_exit++;
1975                         }
1976                         break;
1977                 case 'V':
1978                         terse_version = atoi(optarg);
1979                         if (!(terse_version == 2 || terse_version == 3 ||
1980                              terse_version == 4)) {
1981                                 log_err("fio: bad terse version format\n");
1982                                 exit_val = 1;
1983                                 do_exit++;
1984                         }
1985                         break;
1986                 case 'e':
1987                         if (!strcmp("always", optarg))
1988                                 eta_print = FIO_ETA_ALWAYS;
1989                         else if (!strcmp("never", optarg))
1990                                 eta_print = FIO_ETA_NEVER;
1991                         break;
1992                 case 'E': {
1993                         long long t = 0;
1994
1995                         if (str_to_decimal(optarg, &t, 0, NULL, 1)) {
1996                                 log_err("fio: failed parsing eta time %s\n", optarg);
1997                                 exit_val = 1;
1998                                 do_exit++;
1999                         }
2000                         eta_new_line = t;
2001                         break;
2002                         }
2003                 case 'd':
2004                         if (set_debug(optarg))
2005                                 do_exit++;
2006                         break;
2007                 case 'P':
2008                         did_arg = 1;
2009                         parse_only = 1;
2010                         break;
2011                 case 'x': {
2012                         size_t new_size;
2013
2014                         if (!strcmp(optarg, "global")) {
2015                                 log_err("fio: can't use global as only "
2016                                         "section\n");
2017                                 do_exit++;
2018                                 exit_val = 1;
2019                                 break;
2020                         }
2021                         new_size = (nr_job_sections + 1) * sizeof(char *);
2022                         job_sections = realloc(job_sections, new_size);
2023                         job_sections[nr_job_sections] = strdup(optarg);
2024                         nr_job_sections++;
2025                         break;
2026                         }
2027 #ifdef CONFIG_ZLIB
2028                 case 'X':
2029                         exit_val = iolog_file_inflate(optarg);
2030                         did_arg++;
2031                         do_exit++;
2032                         break;
2033 #endif
2034                 case 'p':
2035                         did_arg = 1;
2036                         if (exec_profile)
2037                                 free(exec_profile);
2038                         exec_profile = strdup(optarg);
2039                         break;
2040                 case FIO_GETOPT_JOB: {
2041                         const char *opt = l_opts[lidx].name;
2042                         char *val = optarg;
2043
2044                         if (!strncmp(opt, "name", 4) && td) {
2045                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2046                                 if (ret)
2047                                         goto out_free;
2048                                 td = NULL;
2049                                 did_arg = 1;
2050                         }
2051                         if (!td) {
2052                                 int is_section = !strncmp(opt, "name", 4);
2053                                 int global = 0;
2054
2055                                 if (!is_section || !strncmp(val, "global", 6))
2056                                         global = 1;
2057
2058                                 if (is_section && skip_this_section(val))
2059                                         continue;
2060
2061                                 td = get_new_job(global, &def_thread, 1, NULL);
2062                                 if (!td || ioengine_load(td)) {
2063                                         if (td) {
2064                                                 put_job(td);
2065                                                 td = NULL;
2066                                         }
2067                                         do_exit++;
2068                                         break;
2069                                 }
2070                                 fio_options_set_ioengine_opts(l_opts, td);
2071                         }
2072
2073                         if ((!val || !strlen(val)) &&
2074                             l_opts[lidx].has_arg == required_argument) {
2075                                 log_err("fio: option %s requires an argument\n", opt);
2076                                 ret = 1;
2077                         } else
2078                                 ret = fio_cmd_option_parse(td, opt, val);
2079
2080                         if (ret) {
2081                                 if (td) {
2082                                         put_job(td);
2083                                         td = NULL;
2084                                 }
2085                                 do_exit++;
2086                         }
2087
2088                         if (!ret && !strcmp(opt, "ioengine")) {
2089                                 free_ioengine(td);
2090                                 if (ioengine_load(td)) {
2091                                         put_job(td);
2092                                         td = NULL;
2093                                         do_exit++;
2094                                         break;
2095                                 }
2096                                 fio_options_set_ioengine_opts(l_opts, td);
2097                         }
2098                         break;
2099                 }
2100                 case FIO_GETOPT_IOENGINE: {
2101                         const char *opt = l_opts[lidx].name;
2102                         char *val = optarg;
2103
2104                         if (!td)
2105                                 break;
2106
2107                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2108                         break;
2109                 }
2110                 case 'w':
2111                         warnings_fatal = 1;
2112                         break;
2113                 case 'j':
2114                         max_jobs = atoi(optarg);
2115                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2116                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2117                                 do_exit++;
2118                                 exit_val = 1;
2119                         }
2120                         break;
2121                 case 'S':
2122                         did_arg = 1;
2123 #ifndef CONFIG_NO_SHM
2124                         if (nr_clients) {
2125                                 log_err("fio: can't be both client and server\n");
2126                                 do_exit++;
2127                                 exit_val = 1;
2128                                 break;
2129                         }
2130                         if (optarg)
2131                                 fio_server_set_arg(optarg);
2132                         is_backend = 1;
2133                         backend = 1;
2134 #else
2135                         log_err("fio: client/server requires SHM support\n");
2136                         do_exit++;
2137                         exit_val = 1;
2138 #endif
2139                         break;
2140                 case 'D':
2141                         if (pid_file)
2142                                 free(pid_file);
2143                         pid_file = strdup(optarg);
2144                         break;
2145                 case 'I':
2146                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2147                                 /* exit on error and calibration only */
2148                                 did_arg = 1;
2149                                 do_exit++;
2150                                 if (ret == -1)
2151                                         exit_val = 1;
2152                         }
2153                         break;
2154                 case 'C':
2155                         did_arg = 1;
2156                         if (is_backend) {
2157                                 log_err("fio: can't be both client and server\n");
2158                                 do_exit++;
2159                                 exit_val = 1;
2160                                 break;
2161                         }
2162                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2163                                 log_err("fio: failed adding client %s\n", optarg);
2164                                 do_exit++;
2165                                 exit_val = 1;
2166                                 break;
2167                         }
2168                         /*
2169                          * If the next argument exists and isn't an option,
2170                          * assume it's a job file for this client only.
2171                          */
2172                         while (optind < argc) {
2173                                 if (!strncmp(argv[optind], "--", 2) ||
2174                                     !strncmp(argv[optind], "-", 1))
2175                                         break;
2176
2177                                 fio_client_add_ini_file(cur_client, argv[optind]);
2178                                 optind++;
2179                         }
2180                         break;
2181                 case 'T':
2182                         did_arg = 1;
2183                         do_exit++;
2184                         exit_val = fio_monotonic_clocktest();
2185                         break;
2186                 case 'G':
2187                         did_arg = 1;
2188                         do_exit++;
2189                         exit_val = fio_crctest(optarg);
2190                         break;
2191                 case 'L': {
2192                         long long val;
2193
2194                         if (check_str_time(optarg, &val, 0)) {
2195                                 log_err("fio: failed parsing time %s\n", optarg);
2196                                 do_exit++;
2197                                 exit_val = 1;
2198                                 break;
2199                         }
2200                         status_interval = val * 1000;
2201                         break;
2202                         }
2203                 case '?':
2204                         log_err("%s: unrecognized option '%s'\n", argv[0],
2205                                                         argv[optind - 1]);
2206                 default:
2207                         do_exit++;
2208                         exit_val = 1;
2209                         break;
2210                 }
2211                 if (do_exit)
2212                         break;
2213         }
2214
2215         if (do_exit && !(is_backend || nr_clients))
2216                 exit(exit_val);
2217
2218         if (nr_clients && fio_clients_connect())
2219                 exit(1);
2220
2221         if (is_backend && backend)
2222                 return fio_start_server(pid_file);
2223         else if (pid_file)
2224                 free(pid_file);
2225
2226         if (td) {
2227                 if (!ret) {
2228                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2229                         if (ret)
2230                                 did_arg = 1;
2231                 }
2232         }
2233
2234         while (!ret && optind < argc) {
2235                 ini_idx++;
2236                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2237                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2238                 optind++;
2239         }
2240
2241 out_free:
2242         if (pid_file)
2243                 free(pid_file);
2244
2245         return ini_idx;
2246 }
2247
2248 int fio_init_options(void)
2249 {
2250         f_out = stdout;
2251         f_err = stderr;
2252
2253         fio_options_fill_optstring();
2254         fio_options_dup_and_init(l_opts);
2255
2256         atexit(free_shm);
2257
2258         if (fill_def_thread())
2259                 return 1;
2260
2261         return 0;
2262 }
2263
2264 extern int fio_check_options(struct thread_options *);
2265
2266 int parse_options(int argc, char *argv[])
2267 {
2268         const int type = FIO_CLIENT_TYPE_CLI;
2269         int job_files, i;
2270
2271         if (fio_init_options())
2272                 return 1;
2273         if (fio_test_cconv(&def_thread.o))
2274                 log_err("fio: failed internal cconv test\n");
2275
2276         job_files = parse_cmd_line(argc, argv, type);
2277
2278         if (job_files > 0) {
2279                 for (i = 0; i < job_files; i++) {
2280                         if (i && fill_def_thread())
2281                                 return 1;
2282                         if (nr_clients) {
2283                                 if (fio_clients_send_ini(ini_file[i]))
2284                                         return 1;
2285                                 free(ini_file[i]);
2286                         } else if (!is_backend) {
2287                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2288                                         return 1;
2289                                 free(ini_file[i]);
2290                         }
2291                 }
2292         } else if (nr_clients) {
2293                 if (fill_def_thread())
2294                         return 1;
2295                 if (fio_clients_send_ini(NULL))
2296                         return 1;
2297         }
2298
2299         free(ini_file);
2300         fio_options_free(&def_thread);
2301         filesetup_mem_free();
2302
2303         if (!thread_number) {
2304                 if (parse_dryrun())
2305                         return 0;
2306                 if (exec_profile)
2307                         return 0;
2308                 if (is_backend || nr_clients)
2309                         return 0;
2310                 if (did_arg)
2311                         return 0;
2312
2313                 log_err("No jobs(s) defined\n\n");
2314
2315                 if (!did_arg) {
2316                         usage(argv[0]);
2317                         return 1;
2318                 }
2319
2320                 return 0;
2321         }
2322
2323         if (def_thread.o.gtod_offload) {
2324                 fio_gtod_init();
2325                 fio_gtod_offload = 1;
2326                 fio_gtod_cpu = def_thread.o.gtod_cpu;
2327         }
2328
2329         if (output_format == FIO_OUTPUT_NORMAL)
2330                 log_info("%s\n", fio_version_string);
2331
2332         return 0;
2333 }
2334
2335 void options_default_fill(struct thread_options *o)
2336 {
2337         memcpy(o, &def_thread.o, sizeof(*o));
2338 }