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 char *trigger_file = NULL;
  68 long long trigger_timeout = 0;
  69 char *trigger_cmd = NULL;
  70 char *trigger_remote_cmd = NULL;
  71
  72 static int prev_group_jobs;
  73
  74 unsigned long fio_debug = 0;
  75 unsigned int fio_debug_jobno = -1;
  76 unsigned int *fio_debug_jobp = NULL;
  77
  78 static char cmd_optstr[256];
  79 static int did_arg;
  80
  81 #define FIO_CLIENT_FLAG         (1 << 16)
  82
  83 /*
  84  * Command line options. These will contain the above, plus a few
  85  * extra that only pertain to fio itself and not jobs.
  86  */
  87 static struct option l_opts[FIO_NR_OPTIONS] = {
  88         {
  89                 .name           = (char *) "output",
  90                 .has_arg        = required_argument,
  91                 .val            = 'o' | FIO_CLIENT_FLAG,
  92         },
  93         {
  94                 .name           = (char *) "timeout",
  95                 .has_arg        = required_argument,
  96                 .val            = 't' | FIO_CLIENT_FLAG,
  97         },
  98         {
  99                 .name           = (char *) "latency-log",
 100                 .has_arg        = required_argument,
 101                 .val            = 'l' | FIO_CLIENT_FLAG,
 102         },
 103         {
 104                 .name           = (char *) "bandwidth-log",
 105                 .has_arg        = required_argument,
 106                 .val            = 'b' | FIO_CLIENT_FLAG,
 107         },
 108         {
 109                 .name           = (char *) "minimal",
 110                 .has_arg        = no_argument,
 111                 .val            = 'm' | FIO_CLIENT_FLAG,
 112         },
 113         {
 114                 .name           = (char *) "output-format",
 115                 .has_arg        = optional_argument,
 116                 .val            = 'F' | FIO_CLIENT_FLAG,
 117         },
 118         {
 119                 .name           = (char *) "append-terse",
 120                 .has_arg        = optional_argument,
 121                 .val            = 'f',
 122         },
 123         {
 124                 .name           = (char *) "version",
 125                 .has_arg        = no_argument,
 126                 .val            = 'v' | FIO_CLIENT_FLAG,
 127         },
 128         {
 129                 .name           = (char *) "help",
 130                 .has_arg        = no_argument,
 131                 .val            = 'h' | FIO_CLIENT_FLAG,
 132         },
 133         {
 134                 .name           = (char *) "cmdhelp",
 135                 .has_arg        = optional_argument,
 136                 .val            = 'c' | FIO_CLIENT_FLAG,
 137         },
 138         {
 139                 .name           = (char *) "enghelp",
 140                 .has_arg        = optional_argument,
 141                 .val            = 'i' | FIO_CLIENT_FLAG,
 142         },
 143         {
 144                 .name           = (char *) "showcmd",
 145                 .has_arg        = no_argument,
 146                 .val            = 's' | FIO_CLIENT_FLAG,
 147         },
 148         {
 149                 .name           = (char *) "readonly",
 150                 .has_arg        = no_argument,
 151                 .val            = 'r' | FIO_CLIENT_FLAG,
 152         },
 153         {
 154                 .name           = (char *) "eta",
 155                 .has_arg        = required_argument,
 156                 .val            = 'e' | FIO_CLIENT_FLAG,
 157         },
 158         {
 159                 .name           = (char *) "eta-newline",
 160                 .has_arg        = required_argument,
 161                 .val            = 'E' | FIO_CLIENT_FLAG,
 162         },
 163         {
 164                 .name           = (char *) "debug",
 165                 .has_arg        = required_argument,
 166                 .val            = 'd' | FIO_CLIENT_FLAG,
 167         },
 168         {
 169                 .name           = (char *) "parse-only",
 170                 .has_arg        = no_argument,
 171                 .val            = 'P' | FIO_CLIENT_FLAG,
 172         },
 173         {
 174                 .name           = (char *) "section",
 175                 .has_arg        = required_argument,
 176                 .val            = 'x' | FIO_CLIENT_FLAG,
 177         },
 178 #ifdef CONFIG_ZLIB
 179         {
 180                 .name           = (char *) "inflate-log",
 181                 .has_arg        = required_argument,
 182                 .val            = 'X' | FIO_CLIENT_FLAG,
 183         },
 184 #endif
 185         {
 186                 .name           = (char *) "alloc-size",
 187                 .has_arg        = required_argument,
 188                 .val            = 'a' | FIO_CLIENT_FLAG,
 189         },
 190         {
 191                 .name           = (char *) "profile",
 192                 .has_arg        = required_argument,
 193                 .val            = 'p' | FIO_CLIENT_FLAG,
 194         },
 195         {
 196                 .name           = (char *) "warnings-fatal",
 197                 .has_arg        = no_argument,
 198                 .val            = 'w' | FIO_CLIENT_FLAG,
 199         },
 200         {
 201                 .name           = (char *) "max-jobs",
 202                 .has_arg        = required_argument,
 203                 .val            = 'j' | FIO_CLIENT_FLAG,
 204         },
 205         {
 206                 .name           = (char *) "terse-version",
 207                 .has_arg        = required_argument,
 208                 .val            = 'V' | FIO_CLIENT_FLAG,
 209         },
 210         {
 211                 .name           = (char *) "server",
 212                 .has_arg        = optional_argument,
 213                 .val            = 'S',
 214         },
 215         {       .name           = (char *) "daemonize",
 216                 .has_arg        = required_argument,
 217                 .val            = 'D',
 218         },
 219         {
 220                 .name           = (char *) "client",
 221                 .has_arg        = required_argument,
 222                 .val            = 'C',
 223         },
 224         {
 225                 .name           = (char *) "remote-config",
 226                 .has_arg        = required_argument,
 227                 .val            = 'R',
 228         },
 229         {
 230                 .name           = (char *) "cpuclock-test",
 231                 .has_arg        = no_argument,
 232                 .val            = 'T',
 233         },
 234         {
 235                 .name           = (char *) "crctest",
 236                 .has_arg        = optional_argument,
 237                 .val            = 'G',
 238         },
 239         {
 240                 .name           = (char *) "idle-prof",
 241                 .has_arg        = required_argument,
 242                 .val            = 'I',
 243         },
 244         {
 245                 .name           = (char *) "status-interval",
 246                 .has_arg        = required_argument,
 247                 .val            = 'L',
 248         },
 249         {
 250                 .name           = (char *) "trigger-file",
 251                 .has_arg        = required_argument,
 252                 .val            = 'W',
 253         },
 254         {
 255                 .name           = (char *) "trigger-timeout",
 256                 .has_arg        = required_argument,
 257                 .val            = 'B',
 258         },
 259         {
 260                 .name           = (char *) "trigger",
 261                 .has_arg        = required_argument,
 262                 .val            = 'H',
 263         },
 264         {
 265                 .name           = (char *) "trigger-remote",
 266                 .has_arg        = required_argument,
 267                 .val            = 'J',
 268         },
 269         {
 270                 .name           = NULL,
 271         },
 272 };
 273
 274 void free_threads_shm(void)
 275 {
 276         if (threads) {
 277                 void *tp = threads;
 278 #ifndef CONFIG_NO_SHM
 279                 struct shmid_ds sbuf;
 280
 281                 threads = NULL;
 282                 shmdt(tp);
 283                 shmctl(shm_id, IPC_RMID, &sbuf);
 284                 shm_id = -1;
 285 #else
 286                 threads = NULL;
 287                 free(tp);
 288 #endif
 289         }
 290 }
 291
 292 static void free_shm(void)
 293 {
 294         if (threads) {
 295                 file_hash_exit();
 296                 flow_exit();
 297                 fio_debug_jobp = NULL;
 298                 free_threads_shm();
 299         }
 300
 301         free(trigger_file);
 302         free(trigger_cmd);
 303         free(trigger_remote_cmd);
 304         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 305
 306         options_free(fio_options, &def_thread);
 307         fio_filelock_exit();
 308         scleanup();
 309 }
 310
 311 /*
 312  * The thread area is shared between the main process and the job
 313  * threads/processes. So setup a shared memory segment that will hold
 314  * all the job info. We use the end of the region for keeping track of
 315  * open files across jobs, for file sharing.
 316  */
 317 static int setup_thread_area(void)
 318 {
 319         void *hash;
 320
 321         if (threads)
 322                 return 0;
 323
 324         /*
 325          * 1024 is too much on some machines, scale max_jobs if
 326          * we get a failure that looks like too large a shm segment
 327          */
 328         do {
 329                 size_t size = max_jobs * sizeof(struct thread_data);
 330
 331                 size += file_hash_size;
 332                 size += sizeof(unsigned int);
 333
 334 #ifndef CONFIG_NO_SHM
 335                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 336                 if (shm_id != -1)
 337                         break;
 338                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 339                         perror("shmget");
 340                         break;
 341                 }
 342 #else
 343                 threads = malloc(size);
 344                 if (threads)
 345                         break;
 346 #endif
 347
 348                 max_jobs >>= 1;
 349         } while (max_jobs);
 350
 351 #ifndef CONFIG_NO_SHM
 352         if (shm_id == -1)
 353                 return 1;
 354
 355         threads = shmat(shm_id, NULL, 0);
 356         if (threads == (void *) -1) {
 357                 perror("shmat");
 358                 return 1;
 359         }
 360 #endif
 361
 362         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 363         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 364         fio_debug_jobp = (void *) hash + file_hash_size;
 365         *fio_debug_jobp = -1;
 366         file_hash_init(hash);
 367
 368         flow_init();
 369
 370         return 0;
 371 }
 372
 373 static void set_cmd_options(struct thread_data *td)
 374 {
 375         struct thread_options *o = &td->o;
 376
 377         if (!o->timeout)
 378                 o->timeout = def_timeout;
 379 }
 380
 381 /*
 382  * Return a free job structure.
 383  */
 384 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 385                                        int preserve_eo, const char *jobname)
 386 {
 387         struct thread_data *td;
 388
 389         if (global) {
 390                 set_cmd_options(&def_thread);
 391                 return &def_thread;
 392         }
 393         if (setup_thread_area()) {
 394                 log_err("error: failed to setup shm segment\n");
 395                 return NULL;
 396         }
 397         if (thread_number >= max_jobs) {
 398                 log_err("error: maximum number of jobs (%d) reached.\n",
 399                                 max_jobs);
 400                 return NULL;
 401         }
 402
 403         td = &threads[thread_number++];
 404         *td = *parent;
 405
 406         td->io_ops = NULL;
 407         if (!preserve_eo)
 408                 td->eo = NULL;
 409
 410         td->o.uid = td->o.gid = -1U;
 411
 412         dup_files(td, parent);
 413         fio_options_mem_dupe(td);
 414
 415         profile_add_hooks(td);
 416
 417         td->thread_number = thread_number;
 418         td->subjob_number = 0;
 419
 420         if (jobname)
 421                 td->o.name = strdup(jobname);
 422
 423         if (!parent->o.group_reporting)
 424                 stat_number++;
 425
 426         set_cmd_options(td);
 427         return td;
 428 }
 429
 430 static void put_job(struct thread_data *td)
 431 {
 432         if (td == &def_thread)
 433                 return;
 434
 435         profile_td_exit(td);
 436         flow_exit_job(td);
 437
 438         if (td->error)
 439                 log_info("fio: %s\n", td->verror);
 440
 441         fio_options_free(td);
 442         if (td->io_ops)
 443                 free_ioengine(td);
 444
 445         if (td->o.name)
 446                 free(td->o.name);
 447
 448         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 449         thread_number--;
 450 }
 451
 452 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 453 {
 454         unsigned int bs = td->o.min_bs[ddir];
 455
 456         assert(ddir_rw(ddir));
 457
 458         if (td->o.rate[ddir])
 459                 td->rate_bps[ddir] = td->o.rate[ddir];
 460         else
 461                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 462
 463         if (!td->rate_bps[ddir]) {
 464                 log_err("rate lower than supported\n");
 465                 return -1;
 466         }
 467
 468         td->rate_pending_usleep[ddir] = 0;
 469         return 0;
 470 }
 471
 472 static int setup_rate(struct thread_data *td)
 473 {
 474         int ret = 0;
 475
 476         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 477                 ret = __setup_rate(td, DDIR_READ);
 478         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 479                 ret |= __setup_rate(td, DDIR_WRITE);
 480         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 481                 ret |= __setup_rate(td, DDIR_TRIM);
 482
 483         return ret;
 484 }
 485
 486 static int fixed_block_size(struct thread_options *o)
 487 {
 488         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 489                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 490                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 491                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 492                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 493 }
 494
 495
 496 static unsigned long long get_rand_start_delay(struct thread_data *td)
 497 {
 498         unsigned long long delayrange;
 499         unsigned long r;
 500
 501         delayrange = td->o.start_delay_high - td->o.start_delay;
 502
 503         r = __rand(&td->delay_state);
 504         delayrange = (unsigned long long) ((double) delayrange * (r / (FRAND_MAX + 1.0)));
 505
 506         delayrange += td->o.start_delay;
 507         return delayrange;
 508 }
 509
 510 /*
 511  * Lazy way of fixing up options that depend on each other. We could also
 512  * define option callback handlers, but this is easier.
 513  */
 514 static int fixup_options(struct thread_data *td)
 515 {
 516         struct thread_options *o = &td->o;
 517         int ret = 0;
 518
 519 #ifndef FIO_HAVE_PSHARED_MUTEX
 520         if (!o->use_thread) {
 521                 log_info("fio: this platform does not support process shared"
 522                          " mutexes, forcing use of threads. Use the 'thread'"
 523                          " option to get rid of this warning.\n");
 524                 o->use_thread = 1;
 525                 ret = warnings_fatal;
 526         }
 527 #endif
 528
 529         if (o->write_iolog_file && o->read_iolog_file) {
 530                 log_err("fio: read iolog overrides write_iolog\n");
 531                 free(o->write_iolog_file);
 532                 o->write_iolog_file = NULL;
 533                 ret = warnings_fatal;
 534         }
 535
 536         /*
 537          * only really works with 1 file
 538          */
 539         if (o->zone_size && o->open_files > 1)
 540                 o->zone_size = 0;
 541
 542         /*
 543          * If zone_range isn't specified, backward compatibility dictates it
 544          * should be made equal to zone_size.
 545          */
 546         if (o->zone_size && !o->zone_range)
 547                 o->zone_range = o->zone_size;
 548
 549         /*
 550          * Reads can do overwrites, we always need to pre-create the file
 551          */
 552         if (td_read(td) || td_rw(td))
 553                 o->overwrite = 1;
 554
 555         if (!o->min_bs[DDIR_READ])
 556                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 557         if (!o->max_bs[DDIR_READ])
 558                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 559         if (!o->min_bs[DDIR_WRITE])
 560                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 561         if (!o->max_bs[DDIR_WRITE])
 562                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 563         if (!o->min_bs[DDIR_TRIM])
 564                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 565         if (!o->max_bs[DDIR_TRIM])
 566                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 567
 568
 569         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 570         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 571
 572         /*
 573          * For random IO, allow blockalign offset other than min_bs.
 574          */
 575         if (!o->ba[DDIR_READ] || !td_random(td))
 576                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 577         if (!o->ba[DDIR_WRITE] || !td_random(td))
 578                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 579         if (!o->ba[DDIR_TRIM] || !td_random(td))
 580                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 581
 582         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 583             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 584             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 585             !o->norandommap) {
 586                 log_err("fio: Any use of blockalign= turns off randommap\n");
 587                 o->norandommap = 1;
 588                 ret = warnings_fatal;
 589         }
 590
 591         if (!o->file_size_high)
 592                 o->file_size_high = o->file_size_low;
 593
 594         if (o->start_delay_high)
 595                 o->start_delay = get_rand_start_delay(td);
 596
 597         if (o->norandommap && o->verify != VERIFY_NONE
 598             && !fixed_block_size(o))  {
 599                 log_err("fio: norandommap given for variable block sizes, "
 600                         "verify disabled\n");
 601                 o->verify = VERIFY_NONE;
 602                 ret = warnings_fatal;
 603         }
 604         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 605                 log_err("fio: bs_unaligned may not work with raw io\n");
 606
 607         /*
 608          * thinktime_spin must be less than thinktime
 609          */
 610         if (o->thinktime_spin > o->thinktime)
 611                 o->thinktime_spin = o->thinktime;
 612
 613         /*
 614          * The low water mark cannot be bigger than the iodepth
 615          */
 616         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 617                 o->iodepth_low = o->iodepth;
 618
 619         /*
 620          * If batch number isn't set, default to the same as iodepth
 621          */
 622         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 623                 o->iodepth_batch = o->iodepth;
 624
 625         if (o->nr_files > td->files_index)
 626                 o->nr_files = td->files_index;
 627
 628         if (o->open_files > o->nr_files || !o->open_files)
 629                 o->open_files = o->nr_files;
 630
 631         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 632             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 633             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 634             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 635                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 636                 ret = 1;
 637         }
 638         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 639             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 640             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 641             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 642             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 643             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 644                 log_err("fio: minimum rate exceeds rate\n");
 645                 ret = 1;
 646         }
 647
 648         if (!o->timeout && o->time_based) {
 649                 log_err("fio: time_based requires a runtime/timeout setting\n");
 650                 o->time_based = 0;
 651                 ret = warnings_fatal;
 652         }
 653
 654         if (o->fill_device && !o->size)
 655                 o->size = -1ULL;
 656
 657         if (o->verify != VERIFY_NONE) {
 658                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 659                         log_info("Multiple writers may overwrite blocks that "
 660                                 "belong to other jobs. This can cause "
 661                                 "verification failures.\n");
 662                         ret = warnings_fatal;
 663                 }
 664
 665                 o->refill_buffers = 1;
 666                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 667                     !o->verify_interval)
 668                         o->verify_interval = o->min_bs[DDIR_WRITE];
 669
 670                 /*
 671                  * Verify interval must be smaller or equal to the
 672                  * write size.
 673                  */
 674                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 675                         o->verify_interval = o->min_bs[DDIR_WRITE];
 676                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 677                         o->verify_interval = o->min_bs[DDIR_READ];
 678         }
 679
 680         if (o->pre_read) {
 681                 o->invalidate_cache = 0;
 682                 if (td->io_ops->flags & FIO_PIPEIO) {
 683                         log_info("fio: cannot pre-read files with an IO engine"
 684                                  " that isn't seekable. Pre-read disabled.\n");
 685                         ret = warnings_fatal;
 686                 }
 687         }
 688
 689         if (!o->unit_base) {
 690                 if (td->io_ops->flags & FIO_BIT_BASED)
 691                         o->unit_base = 1;
 692                 else
 693                         o->unit_base = 8;
 694         }
 695
 696 #ifndef CONFIG_FDATASYNC
 697         if (o->fdatasync_blocks) {
 698                 log_info("fio: this platform does not support fdatasync()"
 699                          " falling back to using fsync().  Use the 'fsync'"
 700                          " option instead of 'fdatasync' to get rid of"
 701                          " this warning\n");
 702                 o->fsync_blocks = o->fdatasync_blocks;
 703                 o->fdatasync_blocks = 0;
 704                 ret = warnings_fatal;
 705         }
 706 #endif
 707
 708 #ifdef WIN32
 709         /*
 710          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 711          * so fail if we're passed those flags
 712          */
 713         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 714                 log_err("fio: Windows does not support direct or non-buffered io with"
 715                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 716                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 717                 ret = 1;
 718         }
 719 #endif
 720
 721         /*
 722          * For fully compressible data, just zero them at init time.
 723          * It's faster than repeatedly filling it.
 724          */
 725         if (td->o.compress_percentage == 100) {
 726                 td->o.zero_buffers = 1;
 727                 td->o.compress_percentage = 0;
 728         }
 729
 730         /*
 731          * Using a non-uniform random distribution excludes usage of
 732          * a random map
 733          */
 734         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
 735                 td->o.norandommap = 1;
 736
 737         /*
 738          * If size is set but less than the min block size, complain
 739          */
 740         if (o->size && o->size < td_min_bs(td)) {
 741                 log_err("fio: size too small, must be larger than the IO size: %llu\n", (unsigned long long) o->size);
 742                 ret = 1;
 743         }
 744
 745         /*
 746          * O_ATOMIC implies O_DIRECT
 747          */
 748         if (td->o.oatomic)
 749                 td->o.odirect = 1;
 750
 751         /*
 752          * If randseed is set, that overrides randrepeat
 753          */
 754         if (td->o.rand_seed)
 755                 td->o.rand_repeatable = 0;
 756
 757         if ((td->io_ops->flags & FIO_NOEXTEND) && td->o.file_append) {
 758                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 759                 ret = 1;
 760         }
 761
 762         return ret;
 763 }
 764
 765 /*
 766  * This function leaks the buffer
 767  */
 768 char *fio_uint_to_kmg(unsigned int val)
 769 {
 770         char *buf = malloc(32);
 771         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 772         char *p = post;
 773
 774         do {
 775                 if (val & 1023)
 776                         break;
 777
 778                 val >>= 10;
 779                 p++;
 780         } while (*p);
 781
 782         snprintf(buf, 32, "%u%c", val, *p);
 783         return buf;
 784 }
 785
 786 /* External engines are specified by "external:name.o") */
 787 static const char *get_engine_name(const char *str)
 788 {
 789         char *p = strstr(str, ":");
 790
 791         if (!p)
 792                 return str;
 793
 794         p++;
 795         strip_blank_front(&p);
 796         strip_blank_end(p);
 797         return p;
 798 }
 799
 800 static int exists_and_not_file(const char *filename)
 801 {
 802         struct stat sb;
 803
 804         if (lstat(filename, &sb) == -1)
 805                 return 0;
 806
 807         /* \\.\ is the device namespace in Windows, where every file
 808          * is a device node */
 809         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 810                 return 0;
 811
 812         return 1;
 813 }
 814
 815 static void td_fill_rand_seeds_internal(struct thread_data *td)
 816 {
 817         init_rand_seed(&td->bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
 818         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
 819         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
 820
 821         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 822                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
 823
 824         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
 825         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
 826         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY]);
 827
 828         if (!td_random(td))
 829                 return;
 830
 831         if (td->o.rand_repeatable)
 832                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 833
 834         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
 835         init_rand_seed(&td->seq_rand_state[DDIR_READ], td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF]);
 836         init_rand_seed(&td->seq_rand_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_SEQ_RAND_WRITE_OFF]);
 837         init_rand_seed(&td->seq_rand_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_SEQ_RAND_TRIM_OFF]);
 838 }
 839
 840 void td_fill_rand_seeds(struct thread_data *td)
 841 {
 842         if (td->o.allrand_repeatable) {
 843                 unsigned int i;
 844
 845                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
 846                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
 847                                 + i;
 848         }
 849
 850         td_fill_rand_seeds_internal(td);
 851
 852         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
 853         frand_copy(&td->buf_state_prev, &td->buf_state);
 854
 855         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF]);
 856 }
 857
 858 /*
 859  * Initializes the ioengine configured for a job, if it has not been done so
 860  * already.
 861  */
 862 int ioengine_load(struct thread_data *td)
 863 {
 864         const char *engine;
 865
 866         /*
 867          * Engine has already been loaded.
 868          */
 869         if (td->io_ops)
 870                 return 0;
 871         if (!td->o.ioengine) {
 872                 log_err("fio: internal fault, no IO engine specified\n");
 873                 return 1;
 874         }
 875
 876         engine = get_engine_name(td->o.ioengine);
 877         td->io_ops = load_ioengine(td, engine);
 878         if (!td->io_ops) {
 879                 log_err("fio: failed to load engine %s\n", engine);
 880                 return 1;
 881         }
 882
 883         if (td->io_ops->option_struct_size && td->io_ops->options) {
 884                 /*
 885                  * In cases where td->eo is set, clone it for a child thread.
 886                  * This requires that the parent thread has the same ioengine,
 887                  * but that requirement must be enforced by the code which
 888                  * cloned the thread.
 889                  */
 890                 void *origeo = td->eo;
 891                 /*
 892                  * Otherwise use the default thread options.
 893                  */
 894                 if (!origeo && td != &def_thread && def_thread.eo &&
 895                     def_thread.io_ops->options == td->io_ops->options)
 896                         origeo = def_thread.eo;
 897
 898                 options_init(td->io_ops->options);
 899                 td->eo = malloc(td->io_ops->option_struct_size);
 900                 /*
 901                  * Use the default thread as an option template if this uses the
 902                  * same options structure and there are non-default options
 903                  * used.
 904                  */
 905                 if (origeo) {
 906                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 907                         options_mem_dupe(td->eo, td->io_ops->options);
 908                 } else {
 909                         memset(td->eo, 0, td->io_ops->option_struct_size);
 910                         fill_default_options(td->eo, td->io_ops->options);
 911                 }
 912                 *(struct thread_data **)td->eo = td;
 913         }
 914
 915         return 0;
 916 }
 917
 918 static void init_flags(struct thread_data *td)
 919 {
 920         struct thread_options *o = &td->o;
 921
 922         if (o->verify_backlog)
 923                 td->flags |= TD_F_VER_BACKLOG;
 924         if (o->trim_backlog)
 925                 td->flags |= TD_F_TRIM_BACKLOG;
 926         if (o->read_iolog_file)
 927                 td->flags |= TD_F_READ_IOLOG;
 928         if (o->refill_buffers)
 929                 td->flags |= TD_F_REFILL_BUFFERS;
 930         if (o->scramble_buffers)
 931                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
 932         if (o->verify != VERIFY_NONE)
 933                 td->flags |= TD_F_VER_NONE;
 934 }
 935
 936 static int setup_random_seeds(struct thread_data *td)
 937 {
 938         unsigned long seed;
 939         unsigned int i;
 940
 941         if (!td->o.rand_repeatable && !td->o.rand_seed)
 942                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
 943
 944         if (!td->o.rand_seed)
 945                 seed = 0x89;
 946         else
 947                 seed = td->o.rand_seed;
 948
 949         for (i = 0; i < 4; i++)
 950                 seed *= 0x9e370001UL;
 951
 952         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
 953                 td->rand_seeds[i] = seed;
 954                 seed *= 0x9e370001UL;
 955         }
 956
 957         td_fill_rand_seeds(td);
 958         return 0;
 959 }
 960
 961 enum {
 962         FPRE_NONE = 0,
 963         FPRE_JOBNAME,
 964         FPRE_JOBNUM,
 965         FPRE_FILENUM
 966 };
 967
 968 static struct fpre_keyword {
 969         const char *keyword;
 970         size_t strlen;
 971         int key;
 972 } fpre_keywords[] = {
 973         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
 974         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
 975         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
 976         { .keyword = NULL, },
 977         };
 978
 979 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
 980                            const char *jobname, int jobnum, int filenum)
 981 {
 982         struct fpre_keyword *f;
 983         char copy[PATH_MAX];
 984         size_t dst_left = PATH_MAX - 1;
 985
 986         if (!o->filename_format || !strlen(o->filename_format)) {
 987                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
 988                 return NULL;
 989         }
 990
 991         for (f = &fpre_keywords[0]; f->keyword; f++)
 992                 f->strlen = strlen(f->keyword);
 993
 994         buf[buf_size - 1] = '\0';
 995         strncpy(buf, o->filename_format, buf_size - 1);
 996
 997         memset(copy, 0, sizeof(copy));
 998         for (f = &fpre_keywords[0]; f->keyword; f++) {
 999                 do {
1000                         size_t pre_len, post_start = 0;
1001                         char *str, *dst = copy;
1002
1003                         str = strcasestr(buf, f->keyword);
1004                         if (!str)
1005                                 break;
1006
1007                         pre_len = str - buf;
1008                         if (strlen(str) != f->strlen)
1009                                 post_start = pre_len + f->strlen;
1010
1011                         if (pre_len) {
1012                                 strncpy(dst, buf, pre_len);
1013                                 dst += pre_len;
1014                                 dst_left -= pre_len;
1015                         }
1016
1017                         switch (f->key) {
1018                         case FPRE_JOBNAME: {
1019                                 int ret;
1020
1021                                 ret = snprintf(dst, dst_left, "%s", jobname);
1022                                 if (ret < 0)
1023                                         break;
1024                                 dst += ret;
1025                                 dst_left -= ret;
1026                                 break;
1027                                 }
1028                         case FPRE_JOBNUM: {
1029                                 int ret;
1030
1031                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1032                                 if (ret < 0)
1033                                         break;
1034                                 dst += ret;
1035                                 dst_left -= ret;
1036                                 break;
1037                                 }
1038                         case FPRE_FILENUM: {
1039                                 int ret;
1040
1041                                 ret = snprintf(dst, dst_left, "%d", filenum);
1042                                 if (ret < 0)
1043                                         break;
1044                                 dst += ret;
1045                                 dst_left -= ret;
1046                                 break;
1047                                 }
1048                         default:
1049                                 assert(0);
1050                                 break;
1051                         }
1052
1053                         if (post_start)
1054                                 strncpy(dst, buf + post_start, dst_left);
1055
1056                         strncpy(buf, copy, buf_size - 1);
1057                 } while (1);
1058         }
1059
1060         return buf;
1061 }
1062
1063 int parse_dryrun(void)
1064 {
1065         return dump_cmdline || parse_only;
1066 }
1067
1068 /*
1069  * Adds a job to the list of things todo. Sanitizes the various options
1070  * to make sure we don't have conflicts, and initializes various
1071  * members of td.
1072  */
1073 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1074                    int recursed, int client_type)
1075 {
1076         unsigned int i;
1077         char fname[PATH_MAX];
1078         int numjobs, file_alloced;
1079         struct thread_options *o = &td->o;
1080         char logname[PATH_MAX + 32];
1081
1082         /*
1083          * the def_thread is just for options, it's not a real job
1084          */
1085         if (td == &def_thread)
1086                 return 0;
1087
1088         init_flags(td);
1089
1090         /*
1091          * if we are just dumping the output command line, don't add the job
1092          */
1093         if (parse_dryrun()) {
1094                 put_job(td);
1095                 return 0;
1096         }
1097
1098         td->client_type = client_type;
1099
1100         if (profile_td_init(td))
1101                 goto err;
1102
1103         if (ioengine_load(td))
1104                 goto err;
1105
1106         if (o->odirect)
1107                 td->io_ops->flags |= FIO_RAWIO;
1108
1109         file_alloced = 0;
1110         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1111                 file_alloced = 1;
1112
1113                 if (o->nr_files == 1 && exists_and_not_file(jobname))
1114                         add_file(td, jobname, job_add_num, 0);
1115                 else {
1116                         for (i = 0; i < o->nr_files; i++)
1117                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1118                 }
1119         }
1120
1121         if (fixup_options(td))
1122                 goto err;
1123
1124         flow_init_job(td);
1125
1126         /*
1127          * IO engines only need this for option callbacks, and the address may
1128          * change in subprocesses.
1129          */
1130         if (td->eo)
1131                 *(struct thread_data **)td->eo = NULL;
1132
1133         if (td->io_ops->flags & FIO_DISKLESSIO) {
1134                 struct fio_file *f;
1135
1136                 for_each_file(td, f, i)
1137                         f->real_file_size = -1ULL;
1138         }
1139
1140         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1141
1142         td->ts.clat_percentiles = o->clat_percentiles;
1143         td->ts.percentile_precision = o->percentile_precision;
1144         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1145
1146         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1147                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1148                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1149                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1150                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1151         }
1152         td->ddir_seq_nr = o->ddir_seq_nr;
1153
1154         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1155                 prev_group_jobs = 0;
1156                 groupid++;
1157         }
1158
1159         td->groupid = groupid;
1160         prev_group_jobs++;
1161
1162         if (setup_random_seeds(td)) {
1163                 td_verror(td, errno, "init_random_state");
1164                 goto err;
1165         }
1166
1167         if (setup_rate(td))
1168                 goto err;
1169
1170         if (o->lat_log_file) {
1171                 struct log_params p = {
1172                         .td = td,
1173                         .avg_msec = o->log_avg_msec,
1174                         .log_type = IO_LOG_TYPE_LAT,
1175                         .log_offset = o->log_offset,
1176                         .log_gz = o->log_gz,
1177                         .log_gz_store = o->log_gz_store,
1178                 };
1179                 const char *suf;
1180
1181                 if (p.log_gz_store)
1182                         suf = "log.fz";
1183                 else
1184                         suf = "log";
1185
1186                 snprintf(logname, sizeof(logname), "%s_lat.%d.%s",
1187                                 o->lat_log_file, td->thread_number, suf);
1188                 setup_log(&td->lat_log, &p, logname);
1189                 snprintf(logname, sizeof(logname), "%s_slat.%d.%s",
1190                                 o->lat_log_file, td->thread_number, suf);
1191                 setup_log(&td->slat_log, &p, logname);
1192                 snprintf(logname, sizeof(logname), "%s_clat.%d.%s",
1193                                 o->lat_log_file, td->thread_number, suf);
1194                 setup_log(&td->clat_log, &p, logname);
1195         }
1196         if (o->bw_log_file) {
1197                 struct log_params p = {
1198                         .td = td,
1199                         .avg_msec = o->log_avg_msec,
1200                         .log_type = IO_LOG_TYPE_BW,
1201                         .log_offset = o->log_offset,
1202                         .log_gz = o->log_gz,
1203                         .log_gz_store = o->log_gz_store,
1204                 };
1205                 const char *suf;
1206
1207                 if (p.log_gz_store)
1208                         suf = "log.fz";
1209                 else
1210                         suf = "log";
1211
1212                 snprintf(logname, sizeof(logname), "%s_bw.%d.%s",
1213                                 o->bw_log_file, td->thread_number, suf);
1214                 setup_log(&td->bw_log, &p, logname);
1215         }
1216         if (o->iops_log_file) {
1217                 struct log_params p = {
1218                         .td = td,
1219                         .avg_msec = o->log_avg_msec,
1220                         .log_type = IO_LOG_TYPE_IOPS,
1221                         .log_offset = o->log_offset,
1222                         .log_gz = o->log_gz,
1223                         .log_gz_store = o->log_gz_store,
1224                 };
1225                 const char *suf;
1226
1227                 if (p.log_gz_store)
1228                         suf = "log.fz";
1229                 else
1230                         suf = "log";
1231
1232                 snprintf(logname, sizeof(logname), "%s_iops.%d.%s",
1233                                 o->iops_log_file, td->thread_number, suf);
1234                 setup_log(&td->iops_log, &p, logname);
1235         }
1236
1237         if (!o->name)
1238                 o->name = strdup(jobname);
1239
1240         if (output_format == FIO_OUTPUT_NORMAL) {
1241                 if (!job_add_num) {
1242                         if (is_backend && !recursed)
1243                                 fio_server_send_add_job(td);
1244
1245                         if (!(td->io_ops->flags & FIO_NOIO)) {
1246                                 char *c1, *c2, *c3, *c4;
1247                                 char *c5 = NULL, *c6 = NULL;
1248
1249                                 c1 = fio_uint_to_kmg(o->min_bs[DDIR_READ]);
1250                                 c2 = fio_uint_to_kmg(o->max_bs[DDIR_READ]);
1251                                 c3 = fio_uint_to_kmg(o->min_bs[DDIR_WRITE]);
1252                                 c4 = fio_uint_to_kmg(o->max_bs[DDIR_WRITE]);
1253
1254                                 if (!o->bs_is_seq_rand) {
1255                                         c5 = fio_uint_to_kmg(o->min_bs[DDIR_TRIM]);
1256                                         c6 = fio_uint_to_kmg(o->max_bs[DDIR_TRIM]);
1257                                 }
1258
1259                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1260                                                         td->groupid,
1261                                                         ddir_str(o->td_ddir));
1262
1263                                 if (o->bs_is_seq_rand)
1264                                         log_info("bs(seq/rand)=%s-%s/%s-%s, ",
1265                                                         c1, c2, c3, c4);
1266                                 else
1267                                         log_info("bs=%s-%s/%s-%s/%s-%s, ",
1268                                                         c1, c2, c3, c4, c5, c6);
1269
1270                                 log_info("ioengine=%s, iodepth=%u\n",
1271                                                 td->io_ops->name, o->iodepth);
1272
1273                                 free(c1);
1274                                 free(c2);
1275                                 free(c3);
1276                                 free(c4);
1277                                 free(c5);
1278                                 free(c6);
1279                         }
1280                 } else if (job_add_num == 1)
1281                         log_info("...\n");
1282         }
1283
1284         /*
1285          * recurse add identical jobs, clear numjobs and stonewall options
1286          * as they don't apply to sub-jobs
1287          */
1288         numjobs = o->numjobs;
1289         while (--numjobs) {
1290                 struct thread_data *td_new = get_new_job(0, td, 1, jobname);
1291
1292                 if (!td_new)
1293                         goto err;
1294
1295                 td_new->o.numjobs = 1;
1296                 td_new->o.stonewall = 0;
1297                 td_new->o.new_group = 0;
1298                 td_new->subjob_number = numjobs;
1299
1300                 if (file_alloced) {
1301                         if (td_new->files) {
1302                                 struct fio_file *f;
1303                                 for_each_file(td_new, f, i) {
1304                                         if (f->file_name)
1305                                                 sfree(f->file_name);
1306                                         sfree(f);
1307                                 }
1308                                 free(td_new->files);
1309                                 td_new->files = NULL;
1310                         }
1311                         td_new->files_index = 0;
1312                         td_new->files_size = 0;
1313                         if (td_new->o.filename) {
1314                                 free(td_new->o.filename);
1315                                 td_new->o.filename = NULL;
1316                         }
1317                 }
1318
1319                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1320                         goto err;
1321         }
1322
1323         return 0;
1324 err:
1325         put_job(td);
1326         return -1;
1327 }
1328
1329 /*
1330  * Parse as if 'o' was a command line
1331  */
1332 void add_job_opts(const char **o, int client_type)
1333 {
1334         struct thread_data *td, *td_parent;
1335         int i, in_global = 1;
1336         char jobname[32];
1337
1338         i = 0;
1339         td_parent = td = NULL;
1340         while (o[i]) {
1341                 if (!strncmp(o[i], "name", 4)) {
1342                         in_global = 0;
1343                         if (td)
1344                                 add_job(td, jobname, 0, 0, client_type);
1345                         td = NULL;
1346                         sprintf(jobname, "%s", o[i] + 5);
1347                 }
1348                 if (in_global && !td_parent)
1349                         td_parent = get_new_job(1, &def_thread, 0, jobname);
1350                 else if (!in_global && !td) {
1351                         if (!td_parent)
1352                                 td_parent = &def_thread;
1353                         td = get_new_job(0, td_parent, 0, jobname);
1354                 }
1355                 if (in_global)
1356                         fio_options_parse(td_parent, (char **) &o[i], 1, 0);
1357                 else
1358                         fio_options_parse(td, (char **) &o[i], 1, 0);
1359                 i++;
1360         }
1361
1362         if (td)
1363                 add_job(td, jobname, 0, 0, client_type);
1364 }
1365
1366 static int skip_this_section(const char *name)
1367 {
1368         int i;
1369
1370         if (!nr_job_sections)
1371                 return 0;
1372         if (!strncmp(name, "global", 6))
1373                 return 0;
1374
1375         for (i = 0; i < nr_job_sections; i++)
1376                 if (!strcmp(job_sections[i], name))
1377                         return 0;
1378
1379         return 1;
1380 }
1381
1382 static int is_empty_or_comment(char *line)
1383 {
1384         unsigned int i;
1385
1386         for (i = 0; i < strlen(line); i++) {
1387                 if (line[i] == ';')
1388                         return 1;
1389                 if (line[i] == '#')
1390                         return 1;
1391                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1392                         return 0;
1393         }
1394
1395         return 1;
1396 }
1397
1398 /*
1399  * This is our [ini] type file parser.
1400  */
1401 int __parse_jobs_ini(struct thread_data *td,
1402                 char *file, int is_buf, int stonewall_flag, int type,
1403                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1404 {
1405         unsigned int global = 0;
1406         char *string;
1407         FILE *f;
1408         char *p;
1409         int ret = 0, stonewall;
1410         int first_sect = 1;
1411         int skip_fgets = 0;
1412         int inside_skip = 0;
1413         char **opts;
1414         int i, alloc_opts, num_opts;
1415
1416         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1417         assert(td || !nested);
1418
1419         if (is_buf)
1420                 f = NULL;
1421         else {
1422                 if (!strcmp(file, "-"))
1423                         f = stdin;
1424                 else
1425                         f = fopen(file, "r");
1426
1427                 if (!f) {
1428                         int __err = errno;
1429
1430                         log_err("fio: unable to open '%s' job file\n", file);
1431                         if (td)
1432                                 td_verror(td, __err, "job file open");
1433                         return 1;
1434                 }
1435         }
1436
1437         string = malloc(4096);
1438
1439         /*
1440          * it's really 256 + small bit, 280 should suffice
1441          */
1442         if (!nested) {
1443                 name = malloc(280);
1444                 memset(name, 0, 280);
1445         }
1446
1447         opts = NULL;
1448         if (nested && popts) {
1449                 opts = *popts;
1450                 alloc_opts = *aopts;
1451                 num_opts = *nopts;
1452         }
1453
1454         if (!opts) {
1455                 alloc_opts = 8;
1456                 opts = malloc(sizeof(char *) * alloc_opts);
1457                 num_opts = 0;
1458         }
1459
1460         stonewall = stonewall_flag;
1461         do {
1462                 /*
1463                  * if skip_fgets is set, we already have loaded a line we
1464                  * haven't handled.
1465                  */
1466                 if (!skip_fgets) {
1467                         if (is_buf)
1468                                 p = strsep(&file, "\n");
1469                         else
1470                                 p = fgets(string, 4096, f);
1471                         if (!p)
1472                                 break;
1473                 }
1474
1475                 skip_fgets = 0;
1476                 strip_blank_front(&p);
1477                 strip_blank_end(p);
1478
1479                 dprint(FD_PARSE, "%s\n", p);
1480                 if (is_empty_or_comment(p))
1481                         continue;
1482
1483                 if (!nested) {
1484                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1485                                 if (inside_skip)
1486                                         continue;
1487
1488                                 log_err("fio: option <%s> outside of "
1489                                         "[] job section\n", p);
1490                                 ret = 1;
1491                                 break;
1492                         }
1493
1494                         name[strlen(name) - 1] = '\0';
1495
1496                         if (skip_this_section(name)) {
1497                                 inside_skip = 1;
1498                                 continue;
1499                         } else
1500                                 inside_skip = 0;
1501
1502                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1503
1504                         global = !strncmp(name, "global", 6);
1505
1506                         if (dump_cmdline) {
1507                                 if (first_sect)
1508                                         log_info("fio ");
1509                                 if (!global)
1510                                         log_info("--name=%s ", name);
1511                                 first_sect = 0;
1512                         }
1513
1514                         td = get_new_job(global, &def_thread, 0, name);
1515                         if (!td) {
1516                                 ret = 1;
1517                                 break;
1518                         }
1519
1520                         /*
1521                          * Separate multiple job files by a stonewall
1522                          */
1523                         if (!global && stonewall) {
1524                                 td->o.stonewall = stonewall;
1525                                 stonewall = 0;
1526                         }
1527
1528                         num_opts = 0;
1529                         memset(opts, 0, alloc_opts * sizeof(char *));
1530                 }
1531                 else
1532                         skip_fgets = 1;
1533
1534                 while (1) {
1535                         if (!skip_fgets) {
1536                                 if (is_buf)
1537                                         p = strsep(&file, "\n");
1538                                 else
1539                                         p = fgets(string, 4096, f);
1540                                 if (!p)
1541                                         break;
1542                                 dprint(FD_PARSE, "%s", p);
1543                         }
1544                         else
1545                                 skip_fgets = 0;
1546
1547                         if (is_empty_or_comment(p))
1548                                 continue;
1549
1550                         strip_blank_front(&p);
1551
1552                         /*
1553                          * new section, break out and make sure we don't
1554                          * fgets() a new line at the top.
1555                          */
1556                         if (p[0] == '[') {
1557                                 if (nested) {
1558                                         log_err("No new sections in included files\n");
1559                                         return 1;
1560                                 }
1561
1562                                 skip_fgets = 1;
1563                                 break;
1564                         }
1565
1566                         strip_blank_end(p);
1567
1568                         if (!strncmp(p, "include", strlen("include"))) {
1569                                 char *filename = p + strlen("include") + 1;
1570
1571                                 if ((ret = __parse_jobs_ini(td, filename,
1572                                                 is_buf, stonewall_flag, type, 1,
1573                                                 name, &opts, &alloc_opts, &num_opts))) {
1574                                         log_err("Error %d while parsing include file %s\n",
1575                                                 ret, filename);
1576                                         break;
1577                                 }
1578                                 continue;
1579                         }
1580
1581                         if (num_opts == alloc_opts) {
1582                                 alloc_opts <<= 1;
1583                                 opts = realloc(opts,
1584                                                 alloc_opts * sizeof(char *));
1585                         }
1586
1587                         opts[num_opts] = strdup(p);
1588                         num_opts++;
1589                 }
1590
1591                 if (nested) {
1592                         *popts = opts;
1593                         *aopts = alloc_opts;
1594                         *nopts = num_opts;
1595                         goto out;
1596                 }
1597
1598                 ret = fio_options_parse(td, opts, num_opts, dump_cmdline);
1599                 if (!ret)
1600                         ret = add_job(td, name, 0, 0, type);
1601                 else {
1602                         log_err("fio: job %s dropped\n", name);
1603                         put_job(td);
1604                 }
1605
1606                 for (i = 0; i < num_opts; i++)
1607                         free(opts[i]);
1608                 num_opts = 0;
1609         } while (!ret);
1610
1611         if (dump_cmdline)
1612                 log_info("\n");
1613
1614         i = 0;
1615         while (i < nr_job_sections) {
1616                 free(job_sections[i]);
1617                 i++;
1618         }
1619
1620         free(opts);
1621 out:
1622         free(string);
1623         if (!nested)
1624                 free(name);
1625         if (!is_buf && f != stdin)
1626                 fclose(f);
1627         return ret;
1628 }
1629
1630 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1631 {
1632         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
1633                         0, NULL, NULL, NULL, NULL);
1634 }
1635
1636 static int fill_def_thread(void)
1637 {
1638         memset(&def_thread, 0, sizeof(def_thread));
1639
1640         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1641         def_thread.o.error_dump = 1;
1642
1643         /*
1644          * fill default options
1645          */
1646         fio_fill_default_options(&def_thread);
1647         return 0;
1648 }
1649
1650 static void usage(const char *name)
1651 {
1652         printf("%s\n", fio_version_string);
1653         printf("%s [options] [job options] <job file(s)>\n", name);
1654         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1655                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1656                 "\t\t\tdiskutil,job,mutex,profile,time,net,rate,compress\n");
1657         printf("  --parse-only\t\tParse options only, don't start any IO\n");
1658         printf("  --output\t\tWrite output to file\n");
1659         printf("  --runtime\t\tRuntime in seconds\n");
1660         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1661         printf("  --minimal\t\tMinimal (terse) output\n");
1662         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1663         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1664         printf("  --version\t\tPrint version info and exit\n");
1665         printf("  --help\t\tPrint this page\n");
1666         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
1667         printf("  --crctest\t\tTest speed of checksum functions\n");
1668         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1669                 " them\n");
1670         printf("  --enghelp=engine\tPrint ioengine help, or list"
1671                 " available ioengines\n");
1672         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1673                 " cmd\n");
1674         printf("  --showcmd\t\tTurn a job file into command line options\n");
1675         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1676         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1677         printf("  --eta-newline=time\tForce a new line for every 'time'");
1678         printf(" period passed\n");
1679         printf("  --status-interval=t\tForce full status dump every");
1680         printf(" 't' period passed\n");
1681         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1682                 " writes\n");
1683         printf("  --section=name\tOnly run specified section in job file\n");
1684         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1685                 " (def 1024)\n");
1686         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1687         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1688         printf("  --server=args\t\tStart a backend fio server\n");
1689         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1690         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1691         printf("  --remote-config=file\tTell fio server to load this local job file\n");
1692         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
1693                 "\t\t\t(option=system,percpu) or run unit work\n"
1694                 "\t\t\tcalibration only (option=calibrate)\n");
1695 #ifdef CONFIG_ZLIB
1696         printf("  --inflate-log=log\tInflate and output compressed log\n");
1697 #endif
1698         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
1699         printf("  --trigger-timeout=t\tExecute trigger af this time\n");
1700         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
1701         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
1702         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1703         printf("\n                   Jens Axboe <jaxboe@fusionio.com>");
1704         printf("\n                   Jens Axboe <axboe@fb.com>\n");
1705 }
1706
1707 #ifdef FIO_INC_DEBUG
1708 struct debug_level debug_levels[] = {
1709         { .name = "process",
1710           .help = "Process creation/exit logging",
1711           .shift = FD_PROCESS,
1712         },
1713         { .name = "file",
1714           .help = "File related action logging",
1715           .shift = FD_FILE,
1716         },
1717         { .name = "io",
1718           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1719           .shift = FD_IO,
1720         },
1721         { .name = "mem",
1722           .help = "Memory allocation/freeing logging",
1723           .shift = FD_MEM,
1724         },
1725         { .name = "blktrace",
1726           .help = "blktrace action logging",
1727           .shift = FD_BLKTRACE,
1728         },
1729         { .name = "verify",
1730           .help = "IO verification action logging",
1731           .shift = FD_VERIFY,
1732         },
1733         { .name = "random",
1734           .help = "Random generation logging",
1735           .shift = FD_RANDOM,
1736         },
1737         { .name = "parse",
1738           .help = "Parser logging",
1739           .shift = FD_PARSE,
1740         },
1741         { .name = "diskutil",
1742           .help = "Disk utility logging actions",
1743           .shift = FD_DISKUTIL,
1744         },
1745         { .name = "job",
1746           .help = "Logging related to creating/destroying jobs",
1747           .shift = FD_JOB,
1748         },
1749         { .name = "mutex",
1750           .help = "Mutex logging",
1751           .shift = FD_MUTEX
1752         },
1753         { .name = "profile",
1754           .help = "Logging related to profiles",
1755           .shift = FD_PROFILE,
1756         },
1757         { .name = "time",
1758           .help = "Logging related to time keeping functions",
1759           .shift = FD_TIME,
1760         },
1761         { .name = "net",
1762           .help = "Network logging",
1763           .shift = FD_NET,
1764         },
1765         { .name = "rate",
1766           .help = "Rate logging",
1767           .shift = FD_RATE,
1768         },
1769         { .name = "compress",
1770           .help = "Log compression logging",
1771           .shift = FD_COMPRESS,
1772         },
1773         { .name = NULL, },
1774 };
1775
1776 static int set_debug(const char *string)
1777 {
1778         struct debug_level *dl;
1779         char *p = (char *) string;
1780         char *opt;
1781         int i;
1782
1783         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1784                 log_info("fio: dumping debug options:");
1785                 for (i = 0; debug_levels[i].name; i++) {
1786                         dl = &debug_levels[i];
1787                         log_info("%s,", dl->name);
1788                 }
1789                 log_info("all\n");
1790                 return 1;
1791         }
1792
1793         while ((opt = strsep(&p, ",")) != NULL) {
1794                 int found = 0;
1795
1796                 if (!strncmp(opt, "all", 3)) {
1797                         log_info("fio: set all debug options\n");
1798                         fio_debug = ~0UL;
1799                         continue;
1800                 }
1801
1802                 for (i = 0; debug_levels[i].name; i++) {
1803                         dl = &debug_levels[i];
1804                         found = !strncmp(opt, dl->name, strlen(dl->name));
1805                         if (!found)
1806                                 continue;
1807
1808                         if (dl->shift == FD_JOB) {
1809                                 opt = strchr(opt, ':');
1810                                 if (!opt) {
1811                                         log_err("fio: missing job number\n");
1812                                         break;
1813                                 }
1814                                 opt++;
1815                                 fio_debug_jobno = atoi(opt);
1816                                 log_info("fio: set debug jobno %d\n",
1817                                                         fio_debug_jobno);
1818                         } else {
1819                                 log_info("fio: set debug option %s\n", opt);
1820                                 fio_debug |= (1UL << dl->shift);
1821                         }
1822                         break;
1823                 }
1824
1825                 if (!found)
1826                         log_err("fio: debug mask %s not found\n", opt);
1827         }
1828         return 0;
1829 }
1830 #else
1831 static int set_debug(const char *string)
1832 {
1833         log_err("fio: debug tracing not included in build\n");
1834         return 1;
1835 }
1836 #endif
1837
1838 static void fio_options_fill_optstring(void)
1839 {
1840         char *ostr = cmd_optstr;
1841         int i, c;
1842
1843         c = i = 0;
1844         while (l_opts[i].name) {
1845                 ostr[c++] = l_opts[i].val;
1846                 if (l_opts[i].has_arg == required_argument)
1847                         ostr[c++] = ':';
1848                 else if (l_opts[i].has_arg == optional_argument) {
1849                         ostr[c++] = ':';
1850                         ostr[c++] = ':';
1851                 }
1852                 i++;
1853         }
1854         ostr[c] = '\0';
1855 }
1856
1857 static int client_flag_set(char c)
1858 {
1859         int i;
1860
1861         i = 0;
1862         while (l_opts[i].name) {
1863                 int val = l_opts[i].val;
1864
1865                 if (c == (val & 0xff))
1866                         return (val & FIO_CLIENT_FLAG);
1867
1868                 i++;
1869         }
1870
1871         return 0;
1872 }
1873
1874 static void parse_cmd_client(void *client, char *opt)
1875 {
1876         fio_client_add_cmd_option(client, opt);
1877 }
1878
1879 int parse_cmd_line(int argc, char *argv[], int client_type)
1880 {
1881         struct thread_data *td = NULL;
1882         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1883         char *ostr = cmd_optstr;
1884         void *pid_file = NULL;
1885         void *cur_client = NULL;
1886         int backend = 0;
1887
1888         /*
1889          * Reset optind handling, since we may call this multiple times
1890          * for the backend.
1891          */
1892         optind = 1;
1893
1894         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1895                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1896                         parse_cmd_client(cur_client, argv[optind - 1]);
1897                         c &= ~FIO_CLIENT_FLAG;
1898                 }
1899
1900                 switch (c) {
1901                 case 'a':
1902                         smalloc_pool_size = atoi(optarg);
1903                         break;
1904                 case 't':
1905                         if (check_str_time(optarg, &def_timeout, 1)) {
1906                                 log_err("fio: failed parsing time %s\n", optarg);
1907                                 do_exit++;
1908                                 exit_val = 1;
1909                         }
1910                         break;
1911                 case 'l':
1912                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
1913                         do_exit++;
1914                         exit_val = 1;
1915                         break;
1916                 case 'b':
1917                         write_bw_log = 1;
1918                         break;
1919                 case 'o':
1920                         if (f_out && f_out != stdout)
1921                                 fclose(f_out);
1922
1923                         f_out = fopen(optarg, "w+");
1924                         if (!f_out) {
1925                                 perror("fopen output");
1926                                 exit(1);
1927                         }
1928                         f_err = f_out;
1929                         break;
1930                 case 'm':
1931                         output_format = FIO_OUTPUT_TERSE;
1932                         break;
1933                 case 'F':
1934                         if (!optarg) {
1935                                 log_err("fio: missing --output-format argument\n");
1936                                 exit_val = 1;
1937                                 do_exit++;
1938                                 break;
1939                         }
1940                         if (!strcmp(optarg, "minimal") ||
1941                             !strcmp(optarg, "terse") ||
1942                             !strcmp(optarg, "csv"))
1943                                 output_format = FIO_OUTPUT_TERSE;
1944                         else if (!strcmp(optarg, "json"))
1945                                 output_format = FIO_OUTPUT_JSON;
1946                         else
1947                                 output_format = FIO_OUTPUT_NORMAL;
1948                         break;
1949                 case 'f':
1950                         append_terse_output = 1;
1951                         break;
1952                 case 'h':
1953                         did_arg = 1;
1954                         if (!cur_client) {
1955                                 usage(argv[0]);
1956                                 do_exit++;
1957                         }
1958                         break;
1959                 case 'c':
1960                         did_arg = 1;
1961                         if (!cur_client) {
1962                                 fio_show_option_help(optarg);
1963                                 do_exit++;
1964                         }
1965                         break;
1966                 case 'i':
1967                         did_arg = 1;
1968                         if (!cur_client) {
1969                                 fio_show_ioengine_help(optarg);
1970                                 do_exit++;
1971                         }
1972                         break;
1973                 case 's':
1974                         did_arg = 1;
1975                         dump_cmdline = 1;
1976                         break;
1977                 case 'r':
1978                         read_only = 1;
1979                         break;
1980                 case 'v':
1981                         did_arg = 1;
1982                         if (!cur_client) {
1983                                 log_info("%s\n", fio_version_string);
1984                                 do_exit++;
1985                         }
1986                         break;
1987                 case 'V':
1988                         terse_version = atoi(optarg);
1989                         if (!(terse_version == 2 || terse_version == 3 ||
1990                              terse_version == 4)) {
1991                                 log_err("fio: bad terse version format\n");
1992                                 exit_val = 1;
1993                                 do_exit++;
1994                         }
1995                         break;
1996                 case 'e':
1997                         if (!strcmp("always", optarg))
1998                                 eta_print = FIO_ETA_ALWAYS;
1999                         else if (!strcmp("never", optarg))
2000                                 eta_print = FIO_ETA_NEVER;
2001                         break;
2002                 case 'E': {
2003                         long long t = 0;
2004
2005                         if (check_str_time(optarg, &t, 1)) {
2006                                 log_err("fio: failed parsing eta time %s\n", optarg);
2007                                 exit_val = 1;
2008                                 do_exit++;
2009                         }
2010                         eta_new_line = t / 1000;
2011                         break;
2012                         }
2013                 case 'd':
2014                         if (set_debug(optarg))
2015                                 do_exit++;
2016                         break;
2017                 case 'P':
2018                         did_arg = 1;
2019                         parse_only = 1;
2020                         break;
2021                 case 'x': {
2022                         size_t new_size;
2023
2024                         if (!strcmp(optarg, "global")) {
2025                                 log_err("fio: can't use global as only "
2026                                         "section\n");
2027                                 do_exit++;
2028                                 exit_val = 1;
2029                                 break;
2030                         }
2031                         new_size = (nr_job_sections + 1) * sizeof(char *);
2032                         job_sections = realloc(job_sections, new_size);
2033                         job_sections[nr_job_sections] = strdup(optarg);
2034                         nr_job_sections++;
2035                         break;
2036                         }
2037 #ifdef CONFIG_ZLIB
2038                 case 'X':
2039                         exit_val = iolog_file_inflate(optarg);
2040                         did_arg++;
2041                         do_exit++;
2042                         break;
2043 #endif
2044                 case 'p':
2045                         did_arg = 1;
2046                         if (exec_profile)
2047                                 free(exec_profile);
2048                         exec_profile = strdup(optarg);
2049                         break;
2050                 case FIO_GETOPT_JOB: {
2051                         const char *opt = l_opts[lidx].name;
2052                         char *val = optarg;
2053
2054                         if (!strncmp(opt, "name", 4) && td) {
2055                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2056                                 if (ret)
2057                                         goto out_free;
2058                                 td = NULL;
2059                                 did_arg = 1;
2060                         }
2061                         if (!td) {
2062                                 int is_section = !strncmp(opt, "name", 4);
2063                                 int global = 0;
2064
2065                                 if (!is_section || !strncmp(val, "global", 6))
2066                                         global = 1;
2067
2068                                 if (is_section && skip_this_section(val))
2069                                         continue;
2070
2071                                 td = get_new_job(global, &def_thread, 1, NULL);
2072                                 if (!td || ioengine_load(td)) {
2073                                         if (td) {
2074                                                 put_job(td);
2075                                                 td = NULL;
2076                                         }
2077                                         do_exit++;
2078                                         break;
2079                                 }
2080                                 fio_options_set_ioengine_opts(l_opts, td);
2081                         }
2082
2083                         if ((!val || !strlen(val)) &&
2084                             l_opts[lidx].has_arg == required_argument) {
2085                                 log_err("fio: option %s requires an argument\n", opt);
2086                                 ret = 1;
2087                         } else
2088                                 ret = fio_cmd_option_parse(td, opt, val);
2089
2090                         if (ret) {
2091                                 if (td) {
2092                                         put_job(td);
2093                                         td = NULL;
2094                                 }
2095                                 do_exit++;
2096                         }
2097
2098                         if (!ret && !strcmp(opt, "ioengine")) {
2099                                 free_ioengine(td);
2100                                 if (ioengine_load(td)) {
2101                                         put_job(td);
2102                                         td = NULL;
2103                                         do_exit++;
2104                                         break;
2105                                 }
2106                                 fio_options_set_ioengine_opts(l_opts, td);
2107                         }
2108                         break;
2109                 }
2110                 case FIO_GETOPT_IOENGINE: {
2111                         const char *opt = l_opts[lidx].name;
2112                         char *val = optarg;
2113
2114                         if (!td)
2115                                 break;
2116
2117                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2118                         break;
2119                 }
2120                 case 'w':
2121                         warnings_fatal = 1;
2122                         break;
2123                 case 'j':
2124                         max_jobs = atoi(optarg);
2125                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2126                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2127                                 do_exit++;
2128                                 exit_val = 1;
2129                         }
2130                         break;
2131                 case 'S':
2132                         did_arg = 1;
2133 #ifndef CONFIG_NO_SHM
2134                         if (nr_clients) {
2135                                 log_err("fio: can't be both client and server\n");
2136                                 do_exit++;
2137                                 exit_val = 1;
2138                                 break;
2139                         }
2140                         if (optarg)
2141                                 fio_server_set_arg(optarg);
2142                         is_backend = 1;
2143                         backend = 1;
2144 #else
2145                         log_err("fio: client/server requires SHM support\n");
2146                         do_exit++;
2147                         exit_val = 1;
2148 #endif
2149                         break;
2150                 case 'D':
2151                         if (pid_file)
2152                                 free(pid_file);
2153                         pid_file = strdup(optarg);
2154                         break;
2155                 case 'I':
2156                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2157                                 /* exit on error and calibration only */
2158                                 did_arg = 1;
2159                                 do_exit++;
2160                                 if (ret == -1)
2161                                         exit_val = 1;
2162                         }
2163                         break;
2164                 case 'C':
2165                         did_arg = 1;
2166                         if (is_backend) {
2167                                 log_err("fio: can't be both client and server\n");
2168                                 do_exit++;
2169                                 exit_val = 1;
2170                                 break;
2171                         }
2172                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2173                                 log_err("fio: failed adding client %s\n", optarg);
2174                                 do_exit++;
2175                                 exit_val = 1;
2176                                 break;
2177                         }
2178                         /*
2179                          * If the next argument exists and isn't an option,
2180                          * assume it's a job file for this client only.
2181                          */
2182                         while (optind < argc) {
2183                                 if (!strncmp(argv[optind], "--", 2) ||
2184                                     !strncmp(argv[optind], "-", 1))
2185                                         break;
2186
2187                                 if (fio_client_add_ini_file(cur_client, argv[optind], 0))
2188                                         break;
2189                                 optind++;
2190                         }
2191                         break;
2192                 case 'R':
2193                         did_arg = 1;
2194                         if (fio_client_add_ini_file(cur_client, optarg, 1)) {
2195                                 do_exit++;
2196                                 exit_val = 1;
2197                         }
2198                         break;
2199                 case 'T':
2200                         did_arg = 1;
2201                         do_exit++;
2202                         exit_val = fio_monotonic_clocktest();
2203                         break;
2204                 case 'G':
2205                         did_arg = 1;
2206                         do_exit++;
2207                         exit_val = fio_crctest(optarg);
2208                         break;
2209                 case 'L': {
2210                         long long val;
2211
2212                         if (check_str_time(optarg, &val, 1)) {
2213                                 log_err("fio: failed parsing time %s\n", optarg);
2214                                 do_exit++;
2215                                 exit_val = 1;
2216                                 break;
2217                         }
2218                         status_interval = val / 1000;
2219                         break;
2220                         }
2221                 case 'W':
2222                         trigger_file = strdup(optarg);
2223                         break;
2224                 case 'H':
2225                         trigger_cmd = strdup(optarg);
2226                         break;
2227                 case 'J':
2228                         trigger_remote_cmd = strdup(optarg);
2229                         break;
2230                 case 'B':
2231                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2232                                 log_err("fio: failed parsing time %s\n", optarg);
2233                                 do_exit++;
2234                                 exit_val = 1;
2235                         }
2236                         trigger_timeout /= 1000000;
2237                         break;
2238                 case '?':
2239                         log_err("%s: unrecognized option '%s'\n", argv[0],
2240                                                         argv[optind - 1]);
2241                 default:
2242                         do_exit++;
2243                         exit_val = 1;
2244                         break;
2245                 }
2246                 if (do_exit)
2247                         break;
2248         }
2249
2250         if (do_exit && !(is_backend || nr_clients))
2251                 exit(exit_val);
2252
2253         if (nr_clients && fio_clients_connect())
2254                 exit(1);
2255
2256         if (is_backend && backend)
2257                 return fio_start_server(pid_file);
2258         else if (pid_file)
2259                 free(pid_file);
2260
2261         if (td) {
2262                 if (!ret) {
2263                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2264                         if (ret)
2265                                 did_arg = 1;
2266                 }
2267         }
2268
2269         while (!ret && optind < argc) {
2270                 ini_idx++;
2271                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2272                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2273                 optind++;
2274         }
2275
2276 out_free:
2277         if (pid_file)
2278                 free(pid_file);
2279
2280         return ini_idx;
2281 }
2282
2283 int fio_init_options(void)
2284 {
2285         f_out = stdout;
2286         f_err = stderr;
2287
2288         fio_options_fill_optstring();
2289         fio_options_dup_and_init(l_opts);
2290
2291         atexit(free_shm);
2292
2293         if (fill_def_thread())
2294                 return 1;
2295
2296         return 0;
2297 }
2298
2299 extern int fio_check_options(struct thread_options *);
2300
2301 int parse_options(int argc, char *argv[])
2302 {
2303         const int type = FIO_CLIENT_TYPE_CLI;
2304         int job_files, i;
2305
2306         if (fio_init_options())
2307                 return 1;
2308         if (fio_test_cconv(&def_thread.o))
2309                 log_err("fio: failed internal cconv test\n");
2310
2311         job_files = parse_cmd_line(argc, argv, type);
2312
2313         if (job_files > 0) {
2314                 for (i = 0; i < job_files; i++) {
2315                         if (i && fill_def_thread())
2316                                 return 1;
2317                         if (nr_clients) {
2318                                 if (fio_clients_send_ini(ini_file[i]))
2319                                         return 1;
2320                                 free(ini_file[i]);
2321                         } else if (!is_backend) {
2322                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2323                                         return 1;
2324                                 free(ini_file[i]);
2325                         }
2326                 }
2327         } else if (nr_clients) {
2328                 if (fill_def_thread())
2329                         return 1;
2330                 if (fio_clients_send_ini(NULL))
2331                         return 1;
2332         }
2333
2334         free(ini_file);
2335         fio_options_free(&def_thread);
2336         filesetup_mem_free();
2337
2338         if (!thread_number) {
2339                 if (parse_dryrun())
2340                         return 0;
2341                 if (exec_profile)
2342                         return 0;
2343                 if (is_backend || nr_clients)
2344                         return 0;
2345                 if (did_arg)
2346                         return 0;
2347
2348                 log_err("No jobs(s) defined\n\n");
2349
2350                 if (!did_arg) {
2351                         usage(argv[0]);
2352                         return 1;
2353                 }
2354
2355                 return 0;
2356         }
2357
2358         if (def_thread.o.gtod_offload) {
2359                 fio_gtod_init();
2360                 fio_gtod_offload = 1;
2361                 fio_gtod_cpu = def_thread.o.gtod_cpu;
2362         }
2363
2364         if (output_format == FIO_OUTPUT_NORMAL)
2365                 log_info("%s\n", fio_version_string);
2366
2367         return 0;
2368 }
2369
2370 void options_default_fill(struct thread_options *o)
2371 {
2372         memcpy(o, &def_thread.o, sizeof(*o));
2373 }