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 <ctype.h>
   8 #include <string.h>
   9 #include <errno.h>
  10 #include <sys/ipc.h>
  11 #include <sys/types.h>
  12 #include <dlfcn.h>
  13 #ifdef CONFIG_VALGRIND_DEV
  14 #include <valgrind/drd.h>
  15 #else
  16 #define DRD_IGNORE_VAR(x) do { } while (0)
  17 #endif
  18
  19 #include "fio.h"
  20 #ifndef FIO_NO_HAVE_SHM_H
  21 #include <sys/shm.h>
  22 #endif
  23
  24 #include "parse.h"
  25 #include "smalloc.h"
  26 #include "filehash.h"
  27 #include "verify.h"
  28 #include "profile.h"
  29 #include "server.h"
  30 #include "idletime.h"
  31 #include "filelock.h"
  32 #include "steadystate.h"
  33
  34 #include "oslib/getopt.h"
  35 #include "oslib/strcasestr.h"
  36
  37 #include "crc/test.h"
  38 #include "lib/pow2.h"
  39 #include "lib/memcpy.h"
  40
  41 const char fio_version_string[] = FIO_VERSION;
  42
  43 #define FIO_RANDSEED            (0xb1899bedUL)
  44
  45 static char **ini_file;
  46 static int max_jobs = FIO_MAX_JOBS;
  47 static int dump_cmdline;
  48 static int parse_only;
  49
  50 static struct thread_data def_thread;
  51 struct thread_data *threads = NULL;
  52 static char **job_sections;
  53 static int nr_job_sections;
  54
  55 int exitall_on_terminate = 0;
  56 int output_format = FIO_OUTPUT_NORMAL;
  57 int eta_print = FIO_ETA_AUTO;
  58 unsigned int eta_interval_msec = 1000;
  59 int eta_new_line = 0;
  60 FILE *f_out = NULL;
  61 FILE *f_err = NULL;
  62 char *exec_profile = NULL;
  63 int warnings_fatal = 0;
  64 int terse_version = 3;
  65 int is_backend = 0;
  66 int is_local_backend = 0;
  67 int nr_clients = 0;
  68 int log_syslog = 0;
  69
  70 int write_bw_log = 0;
  71 int read_only = 0;
  72 int status_interval = 0;
  73
  74 char *trigger_file = NULL;
  75 long long trigger_timeout = 0;
  76 char *trigger_cmd = NULL;
  77 char *trigger_remote_cmd = NULL;
  78
  79 char *aux_path = NULL;
  80
  81 static int prev_group_jobs;
  82
  83 unsigned long fio_debug = 0;
  84 unsigned int fio_debug_jobno = -1;
  85 unsigned int *fio_debug_jobp = NULL;
  86 unsigned int *fio_warned = NULL;
  87
  88 static char cmd_optstr[256];
  89 static bool did_arg;
  90
  91 #define FIO_CLIENT_FLAG         (1 << 16)
  92
  93 /*
  94  * Command line options. These will contain the above, plus a few
  95  * extra that only pertain to fio itself and not jobs.
  96  */
  97 static struct option l_opts[FIO_NR_OPTIONS] = {
  98         {
  99                 .name           = (char *) "output",
 100                 .has_arg        = required_argument,
 101                 .val            = 'o' | FIO_CLIENT_FLAG,
 102         },
 103         {
 104                 .name           = (char *) "latency-log",
 105                 .has_arg        = required_argument,
 106                 .val            = 'l' | FIO_CLIENT_FLAG,
 107         },
 108         {
 109                 .name           = (char *) "bandwidth-log",
 110                 .has_arg        = no_argument,
 111                 .val            = 'b' | FIO_CLIENT_FLAG,
 112         },
 113         {
 114                 .name           = (char *) "minimal",
 115                 .has_arg        = no_argument,
 116                 .val            = 'm' | FIO_CLIENT_FLAG,
 117         },
 118         {
 119                 .name           = (char *) "output-format",
 120                 .has_arg        = required_argument,
 121                 .val            = 'F' | FIO_CLIENT_FLAG,
 122         },
 123         {
 124                 .name           = (char *) "append-terse",
 125                 .has_arg        = optional_argument,
 126                 .val            = 'f',
 127         },
 128         {
 129                 .name           = (char *) "version",
 130                 .has_arg        = no_argument,
 131                 .val            = 'v' | FIO_CLIENT_FLAG,
 132         },
 133         {
 134                 .name           = (char *) "help",
 135                 .has_arg        = no_argument,
 136                 .val            = 'h' | FIO_CLIENT_FLAG,
 137         },
 138         {
 139                 .name           = (char *) "cmdhelp",
 140                 .has_arg        = optional_argument,
 141                 .val            = 'c' | FIO_CLIENT_FLAG,
 142         },
 143         {
 144                 .name           = (char *) "enghelp",
 145                 .has_arg        = optional_argument,
 146                 .val            = 'i' | FIO_CLIENT_FLAG,
 147         },
 148         {
 149                 .name           = (char *) "showcmd",
 150                 .has_arg        = no_argument,
 151                 .val            = 's' | FIO_CLIENT_FLAG,
 152         },
 153         {
 154                 .name           = (char *) "readonly",
 155                 .has_arg        = no_argument,
 156                 .val            = 'r' | FIO_CLIENT_FLAG,
 157         },
 158         {
 159                 .name           = (char *) "eta",
 160                 .has_arg        = required_argument,
 161                 .val            = 'e' | FIO_CLIENT_FLAG,
 162         },
 163         {
 164                 .name           = (char *) "eta-interval",
 165                 .has_arg        = required_argument,
 166                 .val            = 'O' | FIO_CLIENT_FLAG,
 167         },
 168         {
 169                 .name           = (char *) "eta-newline",
 170                 .has_arg        = required_argument,
 171                 .val            = 'E' | FIO_CLIENT_FLAG,
 172         },
 173         {
 174                 .name           = (char *) "debug",
 175                 .has_arg        = required_argument,
 176                 .val            = 'd' | FIO_CLIENT_FLAG,
 177         },
 178         {
 179                 .name           = (char *) "parse-only",
 180                 .has_arg        = no_argument,
 181                 .val            = 'P' | FIO_CLIENT_FLAG,
 182         },
 183         {
 184                 .name           = (char *) "section",
 185                 .has_arg        = required_argument,
 186                 .val            = 'x' | FIO_CLIENT_FLAG,
 187         },
 188 #ifdef CONFIG_ZLIB
 189         {
 190                 .name           = (char *) "inflate-log",
 191                 .has_arg        = required_argument,
 192                 .val            = 'X' | FIO_CLIENT_FLAG,
 193         },
 194 #endif
 195         {
 196                 .name           = (char *) "alloc-size",
 197                 .has_arg        = required_argument,
 198                 .val            = 'a' | FIO_CLIENT_FLAG,
 199         },
 200         {
 201                 .name           = (char *) "profile",
 202                 .has_arg        = required_argument,
 203                 .val            = 'p' | FIO_CLIENT_FLAG,
 204         },
 205         {
 206                 .name           = (char *) "warnings-fatal",
 207                 .has_arg        = no_argument,
 208                 .val            = 'w' | FIO_CLIENT_FLAG,
 209         },
 210         {
 211                 .name           = (char *) "max-jobs",
 212                 .has_arg        = required_argument,
 213                 .val            = 'j' | FIO_CLIENT_FLAG,
 214         },
 215         {
 216                 .name           = (char *) "terse-version",
 217                 .has_arg        = required_argument,
 218                 .val            = 'V' | FIO_CLIENT_FLAG,
 219         },
 220         {
 221                 .name           = (char *) "server",
 222                 .has_arg        = optional_argument,
 223                 .val            = 'S',
 224         },
 225         {       .name           = (char *) "daemonize",
 226                 .has_arg        = required_argument,
 227                 .val            = 'D',
 228         },
 229         {
 230                 .name           = (char *) "client",
 231                 .has_arg        = required_argument,
 232                 .val            = 'C',
 233         },
 234         {
 235                 .name           = (char *) "remote-config",
 236                 .has_arg        = required_argument,
 237                 .val            = 'R',
 238         },
 239         {
 240                 .name           = (char *) "cpuclock-test",
 241                 .has_arg        = no_argument,
 242                 .val            = 'T',
 243         },
 244         {
 245                 .name           = (char *) "crctest",
 246                 .has_arg        = optional_argument,
 247                 .val            = 'G',
 248         },
 249         {
 250                 .name           = (char *) "memcpytest",
 251                 .has_arg        = optional_argument,
 252                 .val            = 'M',
 253         },
 254         {
 255                 .name           = (char *) "idle-prof",
 256                 .has_arg        = required_argument,
 257                 .val            = 'I',
 258         },
 259         {
 260                 .name           = (char *) "status-interval",
 261                 .has_arg        = required_argument,
 262                 .val            = 'L' | FIO_CLIENT_FLAG,
 263         },
 264         {
 265                 .name           = (char *) "trigger-file",
 266                 .has_arg        = required_argument,
 267                 .val            = 'W',
 268         },
 269         {
 270                 .name           = (char *) "trigger-timeout",
 271                 .has_arg        = required_argument,
 272                 .val            = 'B',
 273         },
 274         {
 275                 .name           = (char *) "trigger",
 276                 .has_arg        = required_argument,
 277                 .val            = 'H',
 278         },
 279         {
 280                 .name           = (char *) "trigger-remote",
 281                 .has_arg        = required_argument,
 282                 .val            = 'J',
 283         },
 284         {
 285                 .name           = (char *) "aux-path",
 286                 .has_arg        = required_argument,
 287                 .val            = 'K',
 288         },
 289         {
 290                 .name           = NULL,
 291         },
 292 };
 293
 294 void free_threads_shm(void)
 295 {
 296         if (threads) {
 297                 void *tp = threads;
 298 #ifndef CONFIG_NO_SHM
 299                 struct shmid_ds sbuf;
 300
 301                 threads = NULL;
 302                 shmdt(tp);
 303                 shmctl(shm_id, IPC_RMID, &sbuf);
 304                 shm_id = -1;
 305 #else
 306                 threads = NULL;
 307                 free(tp);
 308 #endif
 309         }
 310 }
 311
 312 static void free_shm(void)
 313 {
 314         if (threads) {
 315                 flow_exit();
 316                 fio_debug_jobp = NULL;
 317                 fio_warned = NULL;
 318                 free_threads_shm();
 319         }
 320
 321         free(trigger_file);
 322         free(trigger_cmd);
 323         free(trigger_remote_cmd);
 324         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 325
 326         options_free(fio_options, &def_thread.o);
 327         fio_filelock_exit();
 328         file_hash_exit();
 329         scleanup();
 330 }
 331
 332 /*
 333  * The thread area is shared between the main process and the job
 334  * threads/processes. So setup a shared memory segment that will hold
 335  * all the job info. We use the end of the region for keeping track of
 336  * open files across jobs, for file sharing.
 337  */
 338 static int setup_thread_area(void)
 339 {
 340         int i;
 341
 342         if (threads)
 343                 return 0;
 344
 345         /*
 346          * 1024 is too much on some machines, scale max_jobs if
 347          * we get a failure that looks like too large a shm segment
 348          */
 349         do {
 350                 size_t size = max_jobs * sizeof(struct thread_data);
 351
 352                 size += 2 * sizeof(unsigned int);
 353
 354 #ifndef CONFIG_NO_SHM
 355                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 356                 if (shm_id != -1)
 357                         break;
 358                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 359                         perror("shmget");
 360                         break;
 361                 }
 362 #else
 363                 threads = malloc(size);
 364                 if (threads)
 365                         break;
 366 #endif
 367
 368                 max_jobs >>= 1;
 369         } while (max_jobs);
 370
 371 #ifndef CONFIG_NO_SHM
 372         if (shm_id == -1)
 373                 return 1;
 374
 375         threads = shmat(shm_id, NULL, 0);
 376         if (threads == (void *) -1) {
 377                 perror("shmat");
 378                 return 1;
 379         }
 380         if (shm_attach_to_open_removed())
 381                 shmctl(shm_id, IPC_RMID, NULL);
 382 #endif
 383
 384         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 385         for (i = 0; i < max_jobs; i++)
 386                 DRD_IGNORE_VAR(threads[i]);
 387         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
 388         *fio_debug_jobp = -1;
 389         fio_warned = fio_debug_jobp + 1;
 390         *fio_warned = 0;
 391
 392         flow_init();
 393
 394         return 0;
 395 }
 396
 397 static void dump_print_option(struct print_option *p)
 398 {
 399         const char *delim;
 400
 401         if (!strcmp("description", p->name))
 402                 delim = "\"";
 403         else
 404                 delim = "";
 405
 406         log_info("--%s%s", p->name, p->value ? "" : " ");
 407         if (p->value)
 408                 log_info("=%s%s%s ", delim, p->value, delim);
 409 }
 410
 411 static void dump_opt_list(struct thread_data *td)
 412 {
 413         struct flist_head *entry;
 414         struct print_option *p;
 415
 416         if (flist_empty(&td->opt_list))
 417                 return;
 418
 419         flist_for_each(entry, &td->opt_list) {
 420                 p = flist_entry(entry, struct print_option, list);
 421                 dump_print_option(p);
 422         }
 423 }
 424
 425 static void fio_dump_options_free(struct thread_data *td)
 426 {
 427         while (!flist_empty(&td->opt_list)) {
 428                 struct print_option *p;
 429
 430                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 431                 flist_del_init(&p->list);
 432                 free(p->name);
 433                 free(p->value);
 434                 free(p);
 435         }
 436 }
 437
 438 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 439 {
 440         struct flist_head *entry;
 441
 442         if (flist_empty(&src->opt_list))
 443                 return;
 444
 445         flist_for_each(entry, &src->opt_list) {
 446                 struct print_option *srcp, *dstp;
 447
 448                 srcp = flist_entry(entry, struct print_option, list);
 449                 dstp = malloc(sizeof(*dstp));
 450                 dstp->name = strdup(srcp->name);
 451                 if (srcp->value)
 452                         dstp->value = strdup(srcp->value);
 453                 else
 454                         dstp->value = NULL;
 455                 flist_add_tail(&dstp->list, &dst->opt_list);
 456         }
 457 }
 458
 459 /*
 460  * Return a free job structure.
 461  */
 462 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 463                                        bool preserve_eo, const char *jobname)
 464 {
 465         struct thread_data *td;
 466
 467         if (global)
 468                 return &def_thread;
 469         if (setup_thread_area()) {
 470                 log_err("error: failed to setup shm segment\n");
 471                 return NULL;
 472         }
 473         if (thread_number >= max_jobs) {
 474                 log_err("error: maximum number of jobs (%d) reached.\n",
 475                                 max_jobs);
 476                 return NULL;
 477         }
 478
 479         td = &threads[thread_number++];
 480         *td = *parent;
 481
 482         INIT_FLIST_HEAD(&td->opt_list);
 483         if (parent != &def_thread)
 484                 copy_opt_list(td, parent);
 485
 486         td->io_ops = NULL;
 487         td->io_ops_init = 0;
 488         if (!preserve_eo)
 489                 td->eo = NULL;
 490
 491         td->o.uid = td->o.gid = -1U;
 492
 493         dup_files(td, parent);
 494         fio_options_mem_dupe(td);
 495
 496         profile_add_hooks(td);
 497
 498         td->thread_number = thread_number;
 499         td->subjob_number = 0;
 500
 501         if (jobname)
 502                 td->o.name = strdup(jobname);
 503
 504         if (!parent->o.group_reporting || parent == &def_thread)
 505                 stat_number++;
 506
 507         return td;
 508 }
 509
 510 static void put_job(struct thread_data *td)
 511 {
 512         if (td == &def_thread)
 513                 return;
 514
 515         profile_td_exit(td);
 516         flow_exit_job(td);
 517
 518         if (td->error)
 519                 log_info("fio: %s\n", td->verror);
 520
 521         fio_options_free(td);
 522         fio_dump_options_free(td);
 523         if (td->io_ops)
 524                 free_ioengine(td);
 525
 526         if (td->o.name)
 527                 free(td->o.name);
 528
 529         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 530         thread_number--;
 531 }
 532
 533 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 534 {
 535         unsigned long long bs = td->o.min_bs[ddir];
 536
 537         assert(ddir_rw(ddir));
 538
 539         if (td->o.rate[ddir])
 540                 td->rate_bps[ddir] = td->o.rate[ddir];
 541         else
 542                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 543
 544         if (!td->rate_bps[ddir]) {
 545                 log_err("rate lower than supported\n");
 546                 return -1;
 547         }
 548
 549         td->rate_next_io_time[ddir] = 0;
 550         td->rate_io_issue_bytes[ddir] = 0;
 551         td->last_usec[ddir] = 0;
 552         return 0;
 553 }
 554
 555 static int setup_rate(struct thread_data *td)
 556 {
 557         int ret = 0;
 558
 559         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 560                 ret = __setup_rate(td, DDIR_READ);
 561         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 562                 ret |= __setup_rate(td, DDIR_WRITE);
 563         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 564                 ret |= __setup_rate(td, DDIR_TRIM);
 565
 566         return ret;
 567 }
 568
 569 static int fixed_block_size(struct thread_options *o)
 570 {
 571         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 572                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 573                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 574                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 575                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 576 }
 577
 578 /*
 579  * <3 Johannes
 580  */
 581 static unsigned int gcd(unsigned int m, unsigned int n)
 582 {
 583         if (!n)
 584                 return m;
 585
 586         return gcd(n, m % n);
 587 }
 588
 589 /*
 590  * Lazy way of fixing up options that depend on each other. We could also
 591  * define option callback handlers, but this is easier.
 592  */
 593 static int fixup_options(struct thread_data *td)
 594 {
 595         struct thread_options *o = &td->o;
 596         int ret = 0;
 597
 598         if (read_only && (td_write(td) || td_trim(td))) {
 599                 log_err("fio: trim and write operations are not allowed"
 600                          " with the --readonly parameter.\n");
 601                 ret |= 1;
 602         }
 603
 604 #ifndef CONFIG_PSHARED
 605         if (!o->use_thread) {
 606                 log_info("fio: this platform does not support process shared"
 607                          " mutexes, forcing use of threads. Use the 'thread'"
 608                          " option to get rid of this warning.\n");
 609                 o->use_thread = 1;
 610                 ret |= warnings_fatal;
 611         }
 612 #endif
 613
 614         if (o->write_iolog_file && o->read_iolog_file) {
 615                 log_err("fio: read iolog overrides write_iolog\n");
 616                 free(o->write_iolog_file);
 617                 o->write_iolog_file = NULL;
 618                 ret |= warnings_fatal;
 619         }
 620
 621         /*
 622          * only really works with 1 file
 623          */
 624         if (o->zone_size && o->open_files > 1)
 625                 o->zone_size = 0;
 626
 627         /*
 628          * If zone_range isn't specified, backward compatibility dictates it
 629          * should be made equal to zone_size.
 630          */
 631         if (o->zone_size && !o->zone_range)
 632                 o->zone_range = o->zone_size;
 633
 634         /*
 635          * Reads can do overwrites, we always need to pre-create the file
 636          */
 637         if (td_read(td))
 638                 o->overwrite = 1;
 639
 640         if (!o->min_bs[DDIR_READ])
 641                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 642         if (!o->max_bs[DDIR_READ])
 643                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 644         if (!o->min_bs[DDIR_WRITE])
 645                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 646         if (!o->max_bs[DDIR_WRITE])
 647                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 648         if (!o->min_bs[DDIR_TRIM])
 649                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 650         if (!o->max_bs[DDIR_TRIM])
 651                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 652
 653         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 654         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 655
 656         /*
 657          * For random IO, allow blockalign offset other than min_bs.
 658          */
 659         if (!o->ba[DDIR_READ] || !td_random(td))
 660                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 661         if (!o->ba[DDIR_WRITE] || !td_random(td))
 662                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 663         if (!o->ba[DDIR_TRIM] || !td_random(td))
 664                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 665
 666         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 667             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 668             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 669             !o->norandommap) {
 670                 log_err("fio: Any use of blockalign= turns off randommap\n");
 671                 o->norandommap = 1;
 672                 ret |= warnings_fatal;
 673         }
 674
 675         if (!o->file_size_high)
 676                 o->file_size_high = o->file_size_low;
 677
 678         if (o->start_delay_high) {
 679                 if (!o->start_delay_orig)
 680                         o->start_delay_orig = o->start_delay;
 681                 o->start_delay = rand_between(&td->delay_state,
 682                                                 o->start_delay_orig,
 683                                                 o->start_delay_high);
 684         }
 685
 686         if (o->norandommap && o->verify != VERIFY_NONE
 687             && !fixed_block_size(o))  {
 688                 log_err("fio: norandommap given for variable block sizes, "
 689                         "verify limited\n");
 690                 ret |= warnings_fatal;
 691         }
 692         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 693                 log_err("fio: bs_unaligned may not work with raw io\n");
 694
 695         /*
 696          * thinktime_spin must be less than thinktime
 697          */
 698         if (o->thinktime_spin > o->thinktime)
 699                 o->thinktime_spin = o->thinktime;
 700
 701         /*
 702          * The low water mark cannot be bigger than the iodepth
 703          */
 704         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 705                 o->iodepth_low = o->iodepth;
 706
 707         /*
 708          * If batch number isn't set, default to the same as iodepth
 709          */
 710         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 711                 o->iodepth_batch = o->iodepth;
 712
 713         /*
 714          * If max batch complete number isn't set or set incorrectly,
 715          * default to the same as iodepth_batch_complete_min
 716          */
 717         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 718                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 719
 720         /*
 721          * There's no need to check for in-flight overlapping IOs if the job
 722          * isn't changing data or the maximum iodepth is guaranteed to be 1
 723          */
 724         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 725             (!(td_write(td) || td_trim(td)) || o->iodepth == 1))
 726                 o->serialize_overlap = 0;
 727         /*
 728          * Currently can't check for overlaps in offload mode
 729          */
 730         if (o->serialize_overlap && o->io_submit_mode == IO_MODE_OFFLOAD) {
 731                 log_err("fio: checking for in-flight overlaps when the "
 732                         "io_submit_mode is offload is not supported\n");
 733                 o->serialize_overlap = 0;
 734                 ret |= warnings_fatal;
 735         }
 736
 737         if (o->nr_files > td->files_index)
 738                 o->nr_files = td->files_index;
 739
 740         if (o->open_files > o->nr_files || !o->open_files)
 741                 o->open_files = o->nr_files;
 742
 743         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 744             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 745             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 746             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 747                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 748                 ret |= 1;
 749         }
 750         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 751             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 752             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 753             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 754             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 755             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 756                 log_err("fio: minimum rate exceeds rate\n");
 757                 ret |= 1;
 758         }
 759
 760         if (!o->timeout && o->time_based) {
 761                 log_err("fio: time_based requires a runtime/timeout setting\n");
 762                 o->time_based = 0;
 763                 ret |= warnings_fatal;
 764         }
 765
 766         if (o->fill_device && !o->size)
 767                 o->size = -1ULL;
 768
 769         if (o->verify != VERIFY_NONE) {
 770                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 771                     (o->filename ||
 772                      !(o->unique_filename &&
 773                        strstr(o->filename_format, "$jobname") &&
 774                        strstr(o->filename_format, "$jobnum") &&
 775                        strstr(o->filename_format, "$filenum")))) {
 776                         log_info("fio: multiple writers may overwrite blocks "
 777                                 "that belong to other jobs. This can cause "
 778                                 "verification failures.\n");
 779                         ret |= warnings_fatal;
 780                 }
 781
 782                 /*
 783                  * Warn if verification is requested but no verification of any
 784                  * kind can be started due to time constraints
 785                  */
 786                 if (td_write(td) && o->do_verify && o->timeout &&
 787                     o->time_based && !td_read(td) && !o->verify_backlog) {
 788                         log_info("fio: verification read phase will never "
 789                                  "start because write phase uses all of "
 790                                  "runtime\n");
 791                         ret |= warnings_fatal;
 792                 }
 793
 794                 if (!fio_option_is_set(o, refill_buffers))
 795                         o->refill_buffers = 1;
 796
 797                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 798                     !o->verify_interval)
 799                         o->verify_interval = o->min_bs[DDIR_WRITE];
 800
 801                 /*
 802                  * Verify interval must be smaller or equal to the
 803                  * write size.
 804                  */
 805                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 806                         o->verify_interval = o->min_bs[DDIR_WRITE];
 807                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 808                         o->verify_interval = o->min_bs[DDIR_READ];
 809
 810                 /*
 811                  * Verify interval must be a factor of both min and max
 812                  * write size
 813                  */
 814                 if (!o->verify_interval ||
 815                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 816                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 817                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 818                                                         o->max_bs[DDIR_WRITE]);
 819         }
 820
 821         if (o->pre_read) {
 822                 if (o->invalidate_cache)
 823                         o->invalidate_cache = 0;
 824                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 825                         log_info("fio: cannot pre-read files with an IO engine"
 826                                  " that isn't seekable. Pre-read disabled.\n");
 827                         ret |= warnings_fatal;
 828                 }
 829         }
 830
 831         if (o->unit_base == N2S_NONE) {
 832                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 833                         o->unit_base = N2S_BITPERSEC;
 834                 else
 835                         o->unit_base = N2S_BYTEPERSEC;
 836         }
 837
 838 #ifndef FIO_HAVE_ANY_FALLOCATE
 839         /* Platform doesn't support any fallocate so force it to none */
 840         o->fallocate_mode = FIO_FALLOCATE_NONE;
 841 #endif
 842
 843 #ifndef CONFIG_FDATASYNC
 844         if (o->fdatasync_blocks) {
 845                 log_info("fio: this platform does not support fdatasync()"
 846                          " falling back to using fsync().  Use the 'fsync'"
 847                          " option instead of 'fdatasync' to get rid of"
 848                          " this warning\n");
 849                 o->fsync_blocks = o->fdatasync_blocks;
 850                 o->fdatasync_blocks = 0;
 851                 ret |= warnings_fatal;
 852         }
 853 #endif
 854
 855 #ifdef WIN32
 856         /*
 857          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 858          * so fail if we're passed those flags
 859          */
 860         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 861                 log_err("fio: Windows does not support direct or non-buffered io with"
 862                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 863                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 864                 ret |= 1;
 865         }
 866 #endif
 867
 868         /*
 869          * For fully compressible data, just zero them at init time.
 870          * It's faster than repeatedly filling it. For non-zero
 871          * compression, we should have refill_buffers set. Set it, unless
 872          * the job file already changed it.
 873          */
 874         if (o->compress_percentage) {
 875                 if (o->compress_percentage == 100) {
 876                         o->zero_buffers = 1;
 877                         o->compress_percentage = 0;
 878                 } else if (!fio_option_is_set(o, refill_buffers)) {
 879                         o->refill_buffers = 1;
 880                         td->flags |= TD_F_REFILL_BUFFERS;
 881                 }
 882         }
 883
 884         /*
 885          * Using a non-uniform random distribution excludes usage of
 886          * a random map
 887          */
 888         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 889                 o->norandommap = 1;
 890
 891         /*
 892          * If size is set but less than the min block size, complain
 893          */
 894         if (o->size && o->size < td_min_bs(td)) {
 895                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 896                         (unsigned long long) o->size, td_min_bs(td));
 897                 ret |= 1;
 898         }
 899
 900         /*
 901          * O_ATOMIC implies O_DIRECT
 902          */
 903         if (o->oatomic)
 904                 o->odirect = 1;
 905
 906         /*
 907          * If randseed is set, that overrides randrepeat
 908          */
 909         if (fio_option_is_set(o, rand_seed))
 910                 o->rand_repeatable = 0;
 911
 912         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 913                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 914                 ret |= 1;
 915         }
 916
 917         if (fio_option_is_set(o, gtod_cpu)) {
 918                 fio_gtod_init();
 919                 fio_gtod_set_cpu(o->gtod_cpu);
 920                 fio_gtod_offload = 1;
 921         }
 922
 923         td->loops = o->loops;
 924         if (!td->loops)
 925                 td->loops = 1;
 926
 927         if (o->block_error_hist && o->nr_files != 1) {
 928                 log_err("fio: block error histogram only available "
 929                         "with a single file per job, but %d files "
 930                         "provided\n", o->nr_files);
 931                 ret |= 1;
 932         }
 933
 934         if (fio_option_is_set(o, clat_percentiles) &&
 935             !fio_option_is_set(o, lat_percentiles)) {
 936                 o->lat_percentiles = !o->clat_percentiles;
 937         } else if (fio_option_is_set(o, lat_percentiles) &&
 938                    !fio_option_is_set(o, clat_percentiles)) {
 939                 o->clat_percentiles = !o->lat_percentiles;
 940         } else if (fio_option_is_set(o, lat_percentiles) &&
 941                    fio_option_is_set(o, clat_percentiles) &&
 942                    o->lat_percentiles && o->clat_percentiles) {
 943                 log_err("fio: lat_percentiles and clat_percentiles are "
 944                         "mutually exclusive\n");
 945                 ret |= 1;
 946         }
 947
 948         if (o->disable_lat)
 949                 o->lat_percentiles = 0;
 950         if (o->disable_clat)
 951                 o->clat_percentiles = 0;
 952
 953         /*
 954          * Fix these up to be nsec internally
 955          */
 956         o->max_latency *= 1000ULL;
 957         o->latency_target *= 1000ULL;
 958         o->latency_window *= 1000ULL;
 959
 960         return ret;
 961 }
 962
 963 static void init_rand_file_service(struct thread_data *td)
 964 {
 965         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 966         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 967
 968         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 969                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 970                 zipf_disable_hash(&td->next_file_zipf);
 971         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 972                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 973                 zipf_disable_hash(&td->next_file_zipf);
 974         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 975                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 976                 gauss_disable_hash(&td->next_file_gauss);
 977         }
 978 }
 979
 980 void td_fill_verify_state_seed(struct thread_data *td)
 981 {
 982         bool use64;
 983
 984         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 985                 use64 = true;
 986         else
 987                 use64 = false;
 988
 989         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
 990                 use64);
 991 }
 992
 993 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
 994 {
 995         unsigned int read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
 996         unsigned int write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
 997         unsigned int trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
 998         int i;
 999
1000         /*
1001          * trimwrite is special in that we need to generate the same
1002          * offsets to get the "write after trim" effect. If we are
1003          * using bssplit to set buffer length distributions, ensure that
1004          * we seed the trim and write generators identically. Ditto for
1005          * verify, read and writes must have the same seed, if we are doing
1006          * read verify.
1007          */
1008         if (td->o.verify != VERIFY_NONE)
1009                 write_seed = read_seed;
1010         if (td_trimwrite(td))
1011                 trim_seed = write_seed;
1012         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1013         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1014         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1015
1016         td_fill_verify_state_seed(td);
1017         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1018
1019         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1020                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1021         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1022                 init_rand_file_service(td);
1023
1024         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1025         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1026         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1027         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1028         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1029         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1030         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1031         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1032
1033         if (!td_random(td))
1034                 return;
1035
1036         if (td->o.rand_repeatable)
1037                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1038
1039         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1040
1041         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1042                 struct frand_state *s = &td->seq_rand_state[i];
1043
1044                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1045         }
1046 }
1047
1048 void td_fill_rand_seeds(struct thread_data *td)
1049 {
1050         bool use64;
1051
1052         if (td->o.allrand_repeatable) {
1053                 unsigned int i;
1054
1055                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1056                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1057                                 + i;
1058         }
1059
1060         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1061                 use64 = true;
1062         else
1063                 use64 = false;
1064
1065         td_fill_rand_seeds_internal(td, use64);
1066
1067         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1068         frand_copy(&td->buf_state_prev, &td->buf_state);
1069 }
1070
1071 /*
1072  * Initializes the ioengine configured for a job, if it has not been done so
1073  * already.
1074  */
1075 int ioengine_load(struct thread_data *td)
1076 {
1077         if (!td->o.ioengine) {
1078                 log_err("fio: internal fault, no IO engine specified\n");
1079                 return 1;
1080         }
1081
1082         if (td->io_ops) {
1083                 struct ioengine_ops *ops;
1084                 void *dlhandle;
1085
1086                 /* An engine is loaded, but the requested ioengine
1087                  * may have changed.
1088                  */
1089                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1090                         /* The right engine is already loaded */
1091                         return 0;
1092                 }
1093
1094                 /*
1095                  * Name of file and engine may be different, load ops
1096                  * for this name and see if they match. If they do, then
1097                  * the engine is unchanged.
1098                  */
1099                 dlhandle = td->io_ops_dlhandle;
1100                 ops = load_ioengine(td);
1101                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1102                         if (dlhandle)
1103                                 dlclose(dlhandle);
1104                         return 0;
1105                 }
1106
1107                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1108                         dlclose(dlhandle);
1109
1110                 /* Unload the old engine. */
1111                 free_ioengine(td);
1112         }
1113
1114         td->io_ops = load_ioengine(td);
1115         if (!td->io_ops) {
1116                 log_err("fio: failed to load engine\n");
1117                 return 1;
1118         }
1119
1120         if (td->io_ops->option_struct_size && td->io_ops->options) {
1121                 /*
1122                  * In cases where td->eo is set, clone it for a child thread.
1123                  * This requires that the parent thread has the same ioengine,
1124                  * but that requirement must be enforced by the code which
1125                  * cloned the thread.
1126                  */
1127                 void *origeo = td->eo;
1128                 /*
1129                  * Otherwise use the default thread options.
1130                  */
1131                 if (!origeo && td != &def_thread && def_thread.eo &&
1132                     def_thread.io_ops->options == td->io_ops->options)
1133                         origeo = def_thread.eo;
1134
1135                 options_init(td->io_ops->options);
1136                 td->eo = malloc(td->io_ops->option_struct_size);
1137                 /*
1138                  * Use the default thread as an option template if this uses the
1139                  * same options structure and there are non-default options
1140                  * used.
1141                  */
1142                 if (origeo) {
1143                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1144                         options_mem_dupe(td->io_ops->options, td->eo);
1145                 } else {
1146                         memset(td->eo, 0, td->io_ops->option_struct_size);
1147                         fill_default_options(td->eo, td->io_ops->options);
1148                 }
1149                 *(struct thread_data **)td->eo = td;
1150         }
1151
1152         if (td->o.odirect)
1153                 td->io_ops->flags |= FIO_RAWIO;
1154
1155         td_set_ioengine_flags(td);
1156         return 0;
1157 }
1158
1159 static void init_flags(struct thread_data *td)
1160 {
1161         struct thread_options *o = &td->o;
1162         int i;
1163
1164         if (o->verify_backlog)
1165                 td->flags |= TD_F_VER_BACKLOG;
1166         if (o->trim_backlog)
1167                 td->flags |= TD_F_TRIM_BACKLOG;
1168         if (o->read_iolog_file)
1169                 td->flags |= TD_F_READ_IOLOG;
1170         if (o->refill_buffers)
1171                 td->flags |= TD_F_REFILL_BUFFERS;
1172         /*
1173          * Always scramble buffers if asked to
1174          */
1175         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1176                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1177         /*
1178          * But also scramble buffers, unless we were explicitly asked
1179          * to zero them.
1180          */
1181         if (o->scramble_buffers && !(o->zero_buffers &&
1182             fio_option_is_set(o, zero_buffers)))
1183                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1184         if (o->verify != VERIFY_NONE)
1185                 td->flags |= TD_F_DO_VERIFY;
1186
1187         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1188                 td->flags |= TD_F_NEED_LOCK;
1189
1190         if (o->mem_type == MEM_CUDA_MALLOC)
1191                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1192
1193         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1194                 if (option_check_rate(td, i)) {
1195                         td->flags |= TD_F_CHECK_RATE;
1196                         break;
1197                 }
1198         }
1199 }
1200
1201 static int setup_random_seeds(struct thread_data *td)
1202 {
1203         unsigned long seed;
1204         unsigned int i;
1205
1206         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1207                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1208                 if (!ret)
1209                         td_fill_rand_seeds(td);
1210                 return ret;
1211         }
1212
1213         seed = td->o.rand_seed;
1214         for (i = 0; i < 4; i++)
1215                 seed *= 0x9e370001UL;
1216
1217         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1218                 td->rand_seeds[i] = seed * td->thread_number + i;
1219                 seed *= 0x9e370001UL;
1220         }
1221
1222         td_fill_rand_seeds(td);
1223         return 0;
1224 }
1225
1226 enum {
1227         FPRE_NONE = 0,
1228         FPRE_JOBNAME,
1229         FPRE_JOBNUM,
1230         FPRE_FILENUM
1231 };
1232
1233 static struct fpre_keyword {
1234         const char *keyword;
1235         size_t strlen;
1236         int key;
1237 } fpre_keywords[] = {
1238         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1239         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1240         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1241         { .keyword = NULL, },
1242         };
1243
1244 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1245                            const char *jobname, int jobnum, int filenum)
1246 {
1247         struct fpre_keyword *f;
1248         char copy[PATH_MAX];
1249         size_t dst_left = PATH_MAX - 1;
1250
1251         if (!o->filename_format || !strlen(o->filename_format)) {
1252                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1253                 return buf;
1254         }
1255
1256         for (f = &fpre_keywords[0]; f->keyword; f++)
1257                 f->strlen = strlen(f->keyword);
1258
1259         buf[buf_size - 1] = '\0';
1260         strncpy(buf, o->filename_format, buf_size - 1);
1261
1262         memset(copy, 0, sizeof(copy));
1263         for (f = &fpre_keywords[0]; f->keyword; f++) {
1264                 do {
1265                         size_t pre_len, post_start = 0;
1266                         char *str, *dst = copy;
1267
1268                         str = strcasestr(buf, f->keyword);
1269                         if (!str)
1270                                 break;
1271
1272                         pre_len = str - buf;
1273                         if (strlen(str) != f->strlen)
1274                                 post_start = pre_len + f->strlen;
1275
1276                         if (pre_len) {
1277                                 strncpy(dst, buf, pre_len);
1278                                 dst += pre_len;
1279                                 dst_left -= pre_len;
1280                         }
1281
1282                         switch (f->key) {
1283                         case FPRE_JOBNAME: {
1284                                 int ret;
1285
1286                                 ret = snprintf(dst, dst_left, "%s", jobname);
1287                                 if (ret < 0)
1288                                         break;
1289                                 else if (ret > dst_left) {
1290                                         log_err("fio: truncated filename\n");
1291                                         dst += dst_left;
1292                                         dst_left = 0;
1293                                 } else {
1294                                         dst += ret;
1295                                         dst_left -= ret;
1296                                 }
1297                                 break;
1298                                 }
1299                         case FPRE_JOBNUM: {
1300                                 int ret;
1301
1302                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1303                                 if (ret < 0)
1304                                         break;
1305                                 else if (ret > dst_left) {
1306                                         log_err("fio: truncated filename\n");
1307                                         dst += dst_left;
1308                                         dst_left = 0;
1309                                 } else {
1310                                         dst += ret;
1311                                         dst_left -= ret;
1312                                 }
1313                                 break;
1314                                 }
1315                         case FPRE_FILENUM: {
1316                                 int ret;
1317
1318                                 ret = snprintf(dst, dst_left, "%d", filenum);
1319                                 if (ret < 0)
1320                                         break;
1321                                 else if (ret > dst_left) {
1322                                         log_err("fio: truncated filename\n");
1323                                         dst += dst_left;
1324                                         dst_left = 0;
1325                                 } else {
1326                                         dst += ret;
1327                                         dst_left -= ret;
1328                                 }
1329                                 break;
1330                                 }
1331                         default:
1332                                 assert(0);
1333                                 break;
1334                         }
1335
1336                         if (post_start)
1337                                 strncpy(dst, buf + post_start, dst_left);
1338
1339                         strncpy(buf, copy, buf_size - 1);
1340                 } while (1);
1341         }
1342
1343         return buf;
1344 }
1345
1346 bool parse_dryrun(void)
1347 {
1348         return dump_cmdline || parse_only;
1349 }
1350
1351 static void gen_log_name(char *name, size_t size, const char *logtype,
1352                          const char *logname, unsigned int num,
1353                          const char *suf, int per_job)
1354 {
1355         if (per_job)
1356                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1357         else
1358                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1359 }
1360
1361 static int check_waitees(char *waitee)
1362 {
1363         struct thread_data *td;
1364         int i, ret = 0;
1365
1366         for_each_td(td, i) {
1367                 if (td->subjob_number)
1368                         continue;
1369
1370                 ret += !strcmp(td->o.name, waitee);
1371         }
1372
1373         return ret;
1374 }
1375
1376 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1377 {
1378         int nw;
1379
1380         if (!o->wait_for)
1381                 return true;
1382
1383         if (!strcmp(jobname, o->wait_for)) {
1384                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1385                                 jobname, o->wait_for);
1386                 return false;
1387         }
1388
1389         if (!(nw = check_waitees(o->wait_for))) {
1390                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1391                 return false;
1392         }
1393
1394         if (nw > 1) {
1395                 log_err("%s: multiple waitees %s found,\n"
1396                         "please avoid duplicates when using wait_for option.\n",
1397                                 jobname, o->wait_for);
1398                 return false;
1399         }
1400
1401         return true;
1402 }
1403
1404 /*
1405  * Adds a job to the list of things todo. Sanitizes the various options
1406  * to make sure we don't have conflicts, and initializes various
1407  * members of td.
1408  */
1409 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1410                    int recursed, int client_type)
1411 {
1412         unsigned int i;
1413         char fname[PATH_MAX];
1414         int numjobs, file_alloced;
1415         struct thread_options *o = &td->o;
1416         char logname[PATH_MAX + 32];
1417
1418         /*
1419          * the def_thread is just for options, it's not a real job
1420          */
1421         if (td == &def_thread)
1422                 return 0;
1423
1424         init_flags(td);
1425
1426         /*
1427          * if we are just dumping the output command line, don't add the job
1428          */
1429         if (parse_dryrun()) {
1430                 put_job(td);
1431                 return 0;
1432         }
1433
1434         td->client_type = client_type;
1435
1436         if (profile_td_init(td))
1437                 goto err;
1438
1439         if (ioengine_load(td))
1440                 goto err;
1441
1442         file_alloced = 0;
1443         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1444                 file_alloced = 1;
1445
1446                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1447                         add_file(td, jobname, job_add_num, 0);
1448                 else {
1449                         for (i = 0; i < o->nr_files; i++)
1450                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1451                 }
1452         }
1453
1454         if (setup_random_seeds(td)) {
1455                 td_verror(td, errno, "setup_random_seeds");
1456                 goto err;
1457         }
1458
1459         if (fixup_options(td))
1460                 goto err;
1461
1462         /*
1463          * Belongs to fixup_options, but o->name is not necessarily set as yet
1464          */
1465         if (!wait_for_ok(jobname, o))
1466                 goto err;
1467
1468         flow_init_job(td);
1469
1470         /*
1471          * IO engines only need this for option callbacks, and the address may
1472          * change in subprocesses.
1473          */
1474         if (td->eo)
1475                 *(struct thread_data **)td->eo = NULL;
1476
1477         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1478                 struct fio_file *f;
1479
1480                 for_each_file(td, f, i)
1481                         f->real_file_size = -1ULL;
1482         }
1483
1484         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1485
1486         td->ts.clat_percentiles = o->clat_percentiles;
1487         td->ts.lat_percentiles = o->lat_percentiles;
1488         td->ts.percentile_precision = o->percentile_precision;
1489         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1490         td->ts.sig_figs = o->sig_figs;
1491
1492         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1493                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1494                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1495                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1496                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1497                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1498         }
1499         td->ts.sync_stat.min_val = ULONG_MAX;
1500         td->ddir_seq_nr = o->ddir_seq_nr;
1501
1502         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1503                 prev_group_jobs = 0;
1504                 groupid++;
1505                 if (groupid == INT_MAX) {
1506                         log_err("fio: too many groups defined\n");
1507                         goto err;
1508                 }
1509         }
1510
1511         td->groupid = groupid;
1512         prev_group_jobs++;
1513
1514         if (setup_rate(td))
1515                 goto err;
1516
1517         if (o->write_lat_log) {
1518                 struct log_params p = {
1519                         .td = td,
1520                         .avg_msec = o->log_avg_msec,
1521                         .hist_msec = o->log_hist_msec,
1522                         .hist_coarseness = o->log_hist_coarseness,
1523                         .log_type = IO_LOG_TYPE_LAT,
1524                         .log_offset = o->log_offset,
1525                         .log_gz = o->log_gz,
1526                         .log_gz_store = o->log_gz_store,
1527                 };
1528                 const char *pre = o->lat_log_file ? o->lat_log_file : o->name;
1529                 const char *suf;
1530
1531                 if (p.log_gz_store)
1532                         suf = "log.fz";
1533                 else
1534                         suf = "log";
1535
1536                 gen_log_name(logname, sizeof(logname), "lat", pre,
1537                                 td->thread_number, suf, o->per_job_logs);
1538                 setup_log(&td->lat_log, &p, logname);
1539
1540                 gen_log_name(logname, sizeof(logname), "slat", pre,
1541                                 td->thread_number, suf, o->per_job_logs);
1542                 setup_log(&td->slat_log, &p, logname);
1543
1544                 gen_log_name(logname, sizeof(logname), "clat", pre,
1545                                 td->thread_number, suf, o->per_job_logs);
1546                 setup_log(&td->clat_log, &p, logname);
1547         }
1548
1549         if (o->write_hist_log) {
1550                 struct log_params p = {
1551                         .td = td,
1552                         .avg_msec = o->log_avg_msec,
1553                         .hist_msec = o->log_hist_msec,
1554                         .hist_coarseness = o->log_hist_coarseness,
1555                         .log_type = IO_LOG_TYPE_HIST,
1556                         .log_offset = o->log_offset,
1557                         .log_gz = o->log_gz,
1558                         .log_gz_store = o->log_gz_store,
1559                 };
1560                 const char *pre = o->hist_log_file ? o->hist_log_file : o->name;
1561                 const char *suf;
1562
1563 #ifndef CONFIG_ZLIB
1564                 if (td->client_type) {
1565                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1566                         goto err;
1567                 }
1568 #endif
1569
1570                 if (p.log_gz_store)
1571                         suf = "log.fz";
1572                 else
1573                         suf = "log";
1574
1575                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1576                                 td->thread_number, suf, o->per_job_logs);
1577                 setup_log(&td->clat_hist_log, &p, logname);
1578         }
1579
1580         if (o->write_bw_log) {
1581                 struct log_params p = {
1582                         .td = td,
1583                         .avg_msec = o->log_avg_msec,
1584                         .hist_msec = o->log_hist_msec,
1585                         .hist_coarseness = o->log_hist_coarseness,
1586                         .log_type = IO_LOG_TYPE_BW,
1587                         .log_offset = o->log_offset,
1588                         .log_gz = o->log_gz,
1589                         .log_gz_store = o->log_gz_store,
1590                 };
1591                 const char *pre = o->bw_log_file ? o->bw_log_file : o->name;
1592                 const char *suf;
1593
1594                 if (fio_option_is_set(o, bw_avg_time))
1595                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1596                 else
1597                         o->bw_avg_time = p.avg_msec;
1598
1599                 p.hist_msec = o->log_hist_msec;
1600                 p.hist_coarseness = o->log_hist_coarseness;
1601
1602                 if (p.log_gz_store)
1603                         suf = "log.fz";
1604                 else
1605                         suf = "log";
1606
1607                 gen_log_name(logname, sizeof(logname), "bw", pre,
1608                                 td->thread_number, suf, o->per_job_logs);
1609                 setup_log(&td->bw_log, &p, logname);
1610         }
1611         if (o->write_iops_log) {
1612                 struct log_params p = {
1613                         .td = td,
1614                         .avg_msec = o->log_avg_msec,
1615                         .hist_msec = o->log_hist_msec,
1616                         .hist_coarseness = o->log_hist_coarseness,
1617                         .log_type = IO_LOG_TYPE_IOPS,
1618                         .log_offset = o->log_offset,
1619                         .log_gz = o->log_gz,
1620                         .log_gz_store = o->log_gz_store,
1621                 };
1622                 const char *pre = o->iops_log_file ? o->iops_log_file : o->name;
1623                 const char *suf;
1624
1625                 if (fio_option_is_set(o, iops_avg_time))
1626                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1627                 else
1628                         o->iops_avg_time = p.avg_msec;
1629
1630                 p.hist_msec = o->log_hist_msec;
1631                 p.hist_coarseness = o->log_hist_coarseness;
1632
1633                 if (p.log_gz_store)
1634                         suf = "log.fz";
1635                 else
1636                         suf = "log";
1637
1638                 gen_log_name(logname, sizeof(logname), "iops", pre,
1639                                 td->thread_number, suf, o->per_job_logs);
1640                 setup_log(&td->iops_log, &p, logname);
1641         }
1642
1643         if (!o->name)
1644                 o->name = strdup(jobname);
1645
1646         if (output_format & FIO_OUTPUT_NORMAL) {
1647                 if (!job_add_num) {
1648                         if (is_backend && !recursed)
1649                                 fio_server_send_add_job(td);
1650
1651                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1652                                 char *c1, *c2, *c3, *c4;
1653                                 char *c5 = NULL, *c6 = NULL;
1654                                 int i2p = is_power_of_2(o->kb_base);
1655
1656                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1657                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1658                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1659                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1660
1661                                 if (!o->bs_is_seq_rand) {
1662                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1663                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1664                                 }
1665
1666                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1667                                                         td->groupid,
1668                                                         ddir_str(o->td_ddir));
1669
1670                                 if (o->bs_is_seq_rand)
1671                                         log_info("bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1672                                                         c1, c2, c3, c4);
1673                                 else
1674                                         log_info("bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1675                                                         c1, c2, c3, c4, c5, c6);
1676
1677                                 log_info("ioengine=%s, iodepth=%u\n",
1678                                                 td->io_ops->name, o->iodepth);
1679
1680                                 free(c1);
1681                                 free(c2);
1682                                 free(c3);
1683                                 free(c4);
1684                                 free(c5);
1685                                 free(c6);
1686                         }
1687                 } else if (job_add_num == 1)
1688                         log_info("...\n");
1689         }
1690
1691         if (td_steadystate_init(td))
1692                 goto err;
1693
1694         /*
1695          * recurse add identical jobs, clear numjobs and stonewall options
1696          * as they don't apply to sub-jobs
1697          */
1698         numjobs = o->numjobs;
1699         while (--numjobs) {
1700                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1701
1702                 if (!td_new)
1703                         goto err;
1704
1705                 td_new->o.numjobs = 1;
1706                 td_new->o.stonewall = 0;
1707                 td_new->o.new_group = 0;
1708                 td_new->subjob_number = numjobs;
1709                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1710                 td_new->o.ss_limit = o->ss_limit;
1711
1712                 if (file_alloced) {
1713                         if (td_new->files) {
1714                                 struct fio_file *f;
1715                                 for_each_file(td_new, f, i) {
1716                                         if (f->file_name)
1717                                                 sfree(f->file_name);
1718                                         sfree(f);
1719                                 }
1720                                 free(td_new->files);
1721                                 td_new->files = NULL;
1722                         }
1723                         td_new->files_index = 0;
1724                         td_new->files_size = 0;
1725                         if (td_new->o.filename) {
1726                                 free(td_new->o.filename);
1727                                 td_new->o.filename = NULL;
1728                         }
1729                 }
1730
1731                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1732                         goto err;
1733         }
1734
1735         return 0;
1736 err:
1737         put_job(td);
1738         return -1;
1739 }
1740
1741 /*
1742  * Parse as if 'o' was a command line
1743  */
1744 void add_job_opts(const char **o, int client_type)
1745 {
1746         struct thread_data *td, *td_parent;
1747         int i, in_global = 1;
1748         char jobname[32];
1749
1750         i = 0;
1751         td_parent = td = NULL;
1752         while (o[i]) {
1753                 if (!strncmp(o[i], "name", 4)) {
1754                         in_global = 0;
1755                         if (td)
1756                                 add_job(td, jobname, 0, 0, client_type);
1757                         td = NULL;
1758                         sprintf(jobname, "%s", o[i] + 5);
1759                 }
1760                 if (in_global && !td_parent)
1761                         td_parent = get_new_job(true, &def_thread, false, jobname);
1762                 else if (!in_global && !td) {
1763                         if (!td_parent)
1764                                 td_parent = &def_thread;
1765                         td = get_new_job(false, td_parent, false, jobname);
1766                 }
1767                 if (in_global)
1768                         fio_options_parse(td_parent, (char **) &o[i], 1);
1769                 else
1770                         fio_options_parse(td, (char **) &o[i], 1);
1771                 i++;
1772         }
1773
1774         if (td)
1775                 add_job(td, jobname, 0, 0, client_type);
1776 }
1777
1778 static int skip_this_section(const char *name)
1779 {
1780         int i;
1781
1782         if (!nr_job_sections)
1783                 return 0;
1784         if (!strncmp(name, "global", 6))
1785                 return 0;
1786
1787         for (i = 0; i < nr_job_sections; i++)
1788                 if (!strcmp(job_sections[i], name))
1789                         return 0;
1790
1791         return 1;
1792 }
1793
1794 static int is_empty_or_comment(char *line)
1795 {
1796         unsigned int i;
1797
1798         for (i = 0; i < strlen(line); i++) {
1799                 if (line[i] == ';')
1800                         return 1;
1801                 if (line[i] == '#')
1802                         return 1;
1803                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1804                         return 0;
1805         }
1806
1807         return 1;
1808 }
1809
1810 /*
1811  * This is our [ini] type file parser.
1812  */
1813 static int __parse_jobs_ini(struct thread_data *td,
1814                 char *file, int is_buf, int stonewall_flag, int type,
1815                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1816 {
1817         bool global = false;
1818         char *string;
1819         FILE *f;
1820         char *p;
1821         int ret = 0, stonewall;
1822         int first_sect = 1;
1823         int skip_fgets = 0;
1824         int inside_skip = 0;
1825         char **opts;
1826         int i, alloc_opts, num_opts;
1827
1828         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1829         assert(td || !nested);
1830
1831         if (is_buf)
1832                 f = NULL;
1833         else {
1834                 if (!strcmp(file, "-"))
1835                         f = stdin;
1836                 else
1837                         f = fopen(file, "r");
1838
1839                 if (!f) {
1840                         int __err = errno;
1841
1842                         log_err("fio: unable to open '%s' job file\n", file);
1843                         if (td)
1844                                 td_verror(td, __err, "job file open");
1845                         return 1;
1846                 }
1847         }
1848
1849         string = malloc(4096);
1850
1851         /*
1852          * it's really 256 + small bit, 280 should suffice
1853          */
1854         if (!nested) {
1855                 name = malloc(280);
1856                 memset(name, 0, 280);
1857         }
1858
1859         opts = NULL;
1860         if (nested && popts) {
1861                 opts = *popts;
1862                 alloc_opts = *aopts;
1863                 num_opts = *nopts;
1864         }
1865
1866         if (!opts) {
1867                 alloc_opts = 8;
1868                 opts = malloc(sizeof(char *) * alloc_opts);
1869                 num_opts = 0;
1870         }
1871
1872         stonewall = stonewall_flag;
1873         do {
1874                 /*
1875                  * if skip_fgets is set, we already have loaded a line we
1876                  * haven't handled.
1877                  */
1878                 if (!skip_fgets) {
1879                         if (is_buf)
1880                                 p = strsep(&file, "\n");
1881                         else
1882                                 p = fgets(string, 4096, f);
1883                         if (!p)
1884                                 break;
1885                 }
1886
1887                 skip_fgets = 0;
1888                 strip_blank_front(&p);
1889                 strip_blank_end(p);
1890
1891                 dprint(FD_PARSE, "%s\n", p);
1892                 if (is_empty_or_comment(p))
1893                         continue;
1894
1895                 if (!nested) {
1896                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1897                                 if (inside_skip)
1898                                         continue;
1899
1900                                 log_err("fio: option <%s> outside of "
1901                                         "[] job section\n", p);
1902                                 ret = 1;
1903                                 break;
1904                         }
1905
1906                         name[strlen(name) - 1] = '\0';
1907
1908                         if (skip_this_section(name)) {
1909                                 inside_skip = 1;
1910                                 continue;
1911                         } else
1912                                 inside_skip = 0;
1913
1914                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1915
1916                         global = !strncmp(name, "global", 6);
1917
1918                         if (dump_cmdline) {
1919                                 if (first_sect)
1920                                         log_info("fio ");
1921                                 if (!global)
1922                                         log_info("--name=%s ", name);
1923                                 first_sect = 0;
1924                         }
1925
1926                         td = get_new_job(global, &def_thread, false, name);
1927                         if (!td) {
1928                                 ret = 1;
1929                                 break;
1930                         }
1931
1932                         /*
1933                          * Separate multiple job files by a stonewall
1934                          */
1935                         if (!global && stonewall) {
1936                                 td->o.stonewall = stonewall;
1937                                 stonewall = 0;
1938                         }
1939
1940                         num_opts = 0;
1941                         memset(opts, 0, alloc_opts * sizeof(char *));
1942                 }
1943                 else
1944                         skip_fgets = 1;
1945
1946                 while (1) {
1947                         if (!skip_fgets) {
1948                                 if (is_buf)
1949                                         p = strsep(&file, "\n");
1950                                 else
1951                                         p = fgets(string, 4096, f);
1952                                 if (!p)
1953                                         break;
1954                                 dprint(FD_PARSE, "%s", p);
1955                         }
1956                         else
1957                                 skip_fgets = 0;
1958
1959                         if (is_empty_or_comment(p))
1960                                 continue;
1961
1962                         strip_blank_front(&p);
1963
1964                         /*
1965                          * new section, break out and make sure we don't
1966                          * fgets() a new line at the top.
1967                          */
1968                         if (p[0] == '[') {
1969                                 if (nested) {
1970                                         log_err("No new sections in included files\n");
1971                                         ret = 1;
1972                                         goto out;
1973                                 }
1974
1975                                 skip_fgets = 1;
1976                                 break;
1977                         }
1978
1979                         strip_blank_end(p);
1980
1981                         if (!strncmp(p, "include", strlen("include"))) {
1982                                 char *filename = p + strlen("include") + 1,
1983                                         *ts, *full_fn = NULL;
1984
1985                                 /*
1986                                  * Allow for the include filename
1987                                  * specification to be relative.
1988                                  */
1989                                 if (access(filename, F_OK) &&
1990                                     (ts = strrchr(file, '/'))) {
1991                                         int len = ts - file +
1992                                                 strlen(filename) + 2;
1993
1994                                         if (!(full_fn = calloc(1, len))) {
1995                                                 ret = ENOMEM;
1996                                                 break;
1997                                         }
1998
1999                                         strncpy(full_fn,
2000                                                 file, (ts - file) + 1);
2001                                         strncpy(full_fn + (ts - file) + 1,
2002                                                 filename, strlen(filename));
2003                                         full_fn[len - 1] = 0;
2004                                         filename = full_fn;
2005                                 }
2006
2007                                 ret = __parse_jobs_ini(td, filename, is_buf,
2008                                                        stonewall_flag, type, 1,
2009                                                        name, &opts,
2010                                                        &alloc_opts, &num_opts);
2011
2012                                 if (ret) {
2013                                         log_err("Error %d while parsing "
2014                                                 "include file %s\n",
2015                                                 ret, filename);
2016                                 }
2017
2018                                 if (full_fn)
2019                                         free(full_fn);
2020
2021                                 if (ret)
2022                                         break;
2023
2024                                 continue;
2025                         }
2026
2027                         if (num_opts == alloc_opts) {
2028                                 alloc_opts <<= 1;
2029                                 opts = realloc(opts,
2030                                                 alloc_opts * sizeof(char *));
2031                         }
2032
2033                         opts[num_opts] = strdup(p);
2034                         num_opts++;
2035                 }
2036
2037                 if (nested) {
2038                         *popts = opts;
2039                         *aopts = alloc_opts;
2040                         *nopts = num_opts;
2041                         goto out;
2042                 }
2043
2044                 ret = fio_options_parse(td, opts, num_opts);
2045                 if (!ret) {
2046                         if (dump_cmdline)
2047                                 dump_opt_list(td);
2048
2049                         ret = add_job(td, name, 0, 0, type);
2050                 } else {
2051                         log_err("fio: job %s dropped\n", name);
2052                         put_job(td);
2053                 }
2054
2055                 for (i = 0; i < num_opts; i++)
2056                         free(opts[i]);
2057                 num_opts = 0;
2058         } while (!ret);
2059
2060         if (dump_cmdline)
2061                 log_info("\n");
2062
2063         i = 0;
2064         while (i < nr_job_sections) {
2065                 free(job_sections[i]);
2066                 i++;
2067         }
2068
2069         free(opts);
2070 out:
2071         free(string);
2072         if (!nested)
2073                 free(name);
2074         if (!is_buf && f != stdin)
2075                 fclose(f);
2076         return ret;
2077 }
2078
2079 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2080 {
2081         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2082                         0, NULL, NULL, NULL, NULL);
2083 }
2084
2085 static int fill_def_thread(void)
2086 {
2087         memset(&def_thread, 0, sizeof(def_thread));
2088         INIT_FLIST_HEAD(&def_thread.opt_list);
2089
2090         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2091         def_thread.o.error_dump = 1;
2092
2093         /*
2094          * fill default options
2095          */
2096         fio_fill_default_options(&def_thread);
2097         return 0;
2098 }
2099
2100 static void show_debug_categories(void)
2101 {
2102 #ifdef FIO_INC_DEBUG
2103         const struct debug_level *dl = &debug_levels[0];
2104         int curlen, first = 1;
2105
2106         curlen = 0;
2107         while (dl->name) {
2108                 int has_next = (dl + 1)->name != NULL;
2109
2110                 if (first || curlen + strlen(dl->name) >= 80) {
2111                         if (!first) {
2112                                 printf("\n");
2113                                 curlen = 0;
2114                         }
2115                         curlen += printf("\t\t\t%s", dl->name);
2116                         curlen += 3 * (8 - 1);
2117                         if (has_next)
2118                                 curlen += printf(",");
2119                 } else {
2120                         curlen += printf("%s", dl->name);
2121                         if (has_next)
2122                                 curlen += printf(",");
2123                 }
2124                 dl++;
2125                 first = 0;
2126         }
2127         printf("\n");
2128 #endif
2129 }
2130
2131 /*
2132  * Following options aren't printed by usage().
2133  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2134  * --latency-log - Deprecated option.
2135  */
2136 static void usage(const char *name)
2137 {
2138         printf("%s\n", fio_version_string);
2139         printf("%s [options] [job options] <job file(s)>\n", name);
2140         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2141         show_debug_categories();
2142         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2143         printf("  --output\t\tWrite output to file\n");
2144         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2145         printf("  --minimal\t\tMinimal (terse) output\n");
2146         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2147         printf("  --terse-version=type\tSet terse version output format"
2148                 " (default 3, or 2 or 4)\n");
2149         printf("  --version\t\tPrint version info and exit\n");
2150         printf("  --help\t\tPrint this page\n");
2151         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2152         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2153         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2154                 " them\n");
2155         printf("  --enghelp=engine\tPrint ioengine help, or list"
2156                 " available ioengines\n");
2157         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2158                 " cmd\n");
2159         printf("  --showcmd\t\tTurn a job file into command line options\n");
2160         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2161         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2162         printf("  --eta-newline=t\tForce a new line for every 't'");
2163         printf(" period passed\n");
2164         printf("  --status-interval=t\tForce full status dump every");
2165         printf(" 't' period passed\n");
2166         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2167                 " writes\n");
2168         printf("  --section=name\tOnly run specified section in job file,"
2169                 " multiple sections can be specified\n");
2170         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2171                 " (def 16384)\n");
2172         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2173         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2174         printf("  --server=args\t\tStart a backend fio server\n");
2175         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2176         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2177         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2178         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2179                 "\t\t\t(option=system,percpu) or run unit work\n"
2180                 "\t\t\tcalibration only (option=calibrate)\n");
2181 #ifdef CONFIG_ZLIB
2182         printf("  --inflate-log=log\tInflate and output compressed log\n");
2183 #endif
2184         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2185         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2186         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2187         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2188         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2189         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2190 }
2191
2192 #ifdef FIO_INC_DEBUG
2193 const struct debug_level debug_levels[] = {
2194         { .name = "process",
2195           .help = "Process creation/exit logging",
2196           .shift = FD_PROCESS,
2197         },
2198         { .name = "file",
2199           .help = "File related action logging",
2200           .shift = FD_FILE,
2201         },
2202         { .name = "io",
2203           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2204           .shift = FD_IO,
2205         },
2206         { .name = "mem",
2207           .help = "Memory allocation/freeing logging",
2208           .shift = FD_MEM,
2209         },
2210         { .name = "blktrace",
2211           .help = "blktrace action logging",
2212           .shift = FD_BLKTRACE,
2213         },
2214         { .name = "verify",
2215           .help = "IO verification action logging",
2216           .shift = FD_VERIFY,
2217         },
2218         { .name = "random",
2219           .help = "Random generation logging",
2220           .shift = FD_RANDOM,
2221         },
2222         { .name = "parse",
2223           .help = "Parser logging",
2224           .shift = FD_PARSE,
2225         },
2226         { .name = "diskutil",
2227           .help = "Disk utility logging actions",
2228           .shift = FD_DISKUTIL,
2229         },
2230         { .name = "job",
2231           .help = "Logging related to creating/destroying jobs",
2232           .shift = FD_JOB,
2233         },
2234         { .name = "mutex",
2235           .help = "Mutex logging",
2236           .shift = FD_MUTEX
2237         },
2238         { .name = "profile",
2239           .help = "Logging related to profiles",
2240           .shift = FD_PROFILE,
2241         },
2242         { .name = "time",
2243           .help = "Logging related to time keeping functions",
2244           .shift = FD_TIME,
2245         },
2246         { .name = "net",
2247           .help = "Network logging",
2248           .shift = FD_NET,
2249         },
2250         { .name = "rate",
2251           .help = "Rate logging",
2252           .shift = FD_RATE,
2253         },
2254         { .name = "compress",
2255           .help = "Log compression logging",
2256           .shift = FD_COMPRESS,
2257         },
2258         { .name = "steadystate",
2259           .help = "Steady state detection logging",
2260           .shift = FD_STEADYSTATE,
2261         },
2262         { .name = "helperthread",
2263           .help = "Helper thread logging",
2264           .shift = FD_HELPERTHREAD,
2265         },
2266         { .name = "zbd",
2267           .help = "Zoned Block Device logging",
2268           .shift = FD_ZBD,
2269         },
2270         { .name = NULL, },
2271 };
2272
2273 static int set_debug(const char *string)
2274 {
2275         const struct debug_level *dl;
2276         char *p = (char *) string;
2277         char *opt;
2278         int i;
2279
2280         if (!string)
2281                 return 0;
2282
2283         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2284                 log_info("fio: dumping debug options:");
2285                 for (i = 0; debug_levels[i].name; i++) {
2286                         dl = &debug_levels[i];
2287                         log_info("%s,", dl->name);
2288                 }
2289                 log_info("all\n");
2290                 return 1;
2291         }
2292
2293         while ((opt = strsep(&p, ",")) != NULL) {
2294                 int found = 0;
2295
2296                 if (!strncmp(opt, "all", 3)) {
2297                         log_info("fio: set all debug options\n");
2298                         fio_debug = ~0UL;
2299                         continue;
2300                 }
2301
2302                 for (i = 0; debug_levels[i].name; i++) {
2303                         dl = &debug_levels[i];
2304                         found = !strncmp(opt, dl->name, strlen(dl->name));
2305                         if (!found)
2306                                 continue;
2307
2308                         if (dl->shift == FD_JOB) {
2309                                 opt = strchr(opt, ':');
2310                                 if (!opt) {
2311                                         log_err("fio: missing job number\n");
2312                                         break;
2313                                 }
2314                                 opt++;
2315                                 fio_debug_jobno = atoi(opt);
2316                                 log_info("fio: set debug jobno %d\n",
2317                                                         fio_debug_jobno);
2318                         } else {
2319                                 log_info("fio: set debug option %s\n", opt);
2320                                 fio_debug |= (1UL << dl->shift);
2321                         }
2322                         break;
2323                 }
2324
2325                 if (!found)
2326                         log_err("fio: debug mask %s not found\n", opt);
2327         }
2328         return 0;
2329 }
2330 #else
2331 static int set_debug(const char *string)
2332 {
2333         log_err("fio: debug tracing not included in build\n");
2334         return 1;
2335 }
2336 #endif
2337
2338 static void fio_options_fill_optstring(void)
2339 {
2340         char *ostr = cmd_optstr;
2341         int i, c;
2342
2343         c = i = 0;
2344         while (l_opts[i].name) {
2345                 ostr[c++] = l_opts[i].val;
2346                 if (l_opts[i].has_arg == required_argument)
2347                         ostr[c++] = ':';
2348                 else if (l_opts[i].has_arg == optional_argument) {
2349                         ostr[c++] = ':';
2350                         ostr[c++] = ':';
2351                 }
2352                 i++;
2353         }
2354         ostr[c] = '\0';
2355 }
2356
2357 static int client_flag_set(char c)
2358 {
2359         int i;
2360
2361         i = 0;
2362         while (l_opts[i].name) {
2363                 int val = l_opts[i].val;
2364
2365                 if (c == (val & 0xff))
2366                         return (val & FIO_CLIENT_FLAG);
2367
2368                 i++;
2369         }
2370
2371         return 0;
2372 }
2373
2374 static void parse_cmd_client(void *client, char *opt)
2375 {
2376         fio_client_add_cmd_option(client, opt);
2377 }
2378
2379 static void show_closest_option(const char *name)
2380 {
2381         int best_option, best_distance;
2382         int i, distance;
2383
2384         while (*name == '-')
2385                 name++;
2386
2387         best_option = -1;
2388         best_distance = INT_MAX;
2389         i = 0;
2390         while (l_opts[i].name) {
2391                 distance = string_distance(name, l_opts[i].name);
2392                 if (distance < best_distance) {
2393                         best_distance = distance;
2394                         best_option = i;
2395                 }
2396                 i++;
2397         }
2398
2399         if (best_option != -1 && string_distance_ok(name, best_distance))
2400                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2401 }
2402
2403 static int parse_output_format(const char *optarg)
2404 {
2405         char *p, *orig, *opt;
2406         int ret = 0;
2407
2408         p = orig = strdup(optarg);
2409
2410         output_format = 0;
2411
2412         while ((opt = strsep(&p, ",")) != NULL) {
2413                 if (!strcmp(opt, "minimal") ||
2414                     !strcmp(opt, "terse") ||
2415                     !strcmp(opt, "csv"))
2416                         output_format |= FIO_OUTPUT_TERSE;
2417                 else if (!strcmp(opt, "json"))
2418                         output_format |= FIO_OUTPUT_JSON;
2419                 else if (!strcmp(opt, "json+"))
2420                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2421                 else if (!strcmp(opt, "normal"))
2422                         output_format |= FIO_OUTPUT_NORMAL;
2423                 else {
2424                         log_err("fio: invalid output format %s\n", opt);
2425                         ret = 1;
2426                         break;
2427                 }
2428         }
2429
2430         free(orig);
2431         return ret;
2432 }
2433
2434 int parse_cmd_line(int argc, char *argv[], int client_type)
2435 {
2436         struct thread_data *td = NULL;
2437         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2438         char *ostr = cmd_optstr;
2439         char *pid_file = NULL;
2440         void *cur_client = NULL;
2441         int backend = 0;
2442
2443         /*
2444          * Reset optind handling, since we may call this multiple times
2445          * for the backend.
2446          */
2447         optind = 1;
2448
2449         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2450                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2451                         parse_cmd_client(cur_client, argv[optind - 1]);
2452                         c &= ~FIO_CLIENT_FLAG;
2453                 }
2454
2455                 switch (c) {
2456                 case 'a':
2457                         smalloc_pool_size = atoi(optarg);
2458                         smalloc_pool_size <<= 10;
2459                         sinit();
2460                         break;
2461                 case 'l':
2462                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2463                         do_exit++;
2464                         exit_val = 1;
2465                         break;
2466                 case 'b':
2467                         write_bw_log = 1;
2468                         break;
2469                 case 'o': {
2470                         FILE *tmp;
2471
2472                         if (f_out && f_out != stdout)
2473                                 fclose(f_out);
2474
2475                         tmp = fopen(optarg, "w+");
2476                         if (!tmp) {
2477                                 log_err("fio: output file open error: %s\n", strerror(errno));
2478                                 exit_val = 1;
2479                                 do_exit++;
2480                                 break;
2481                         }
2482                         f_err = f_out = tmp;
2483                         break;
2484                         }
2485                 case 'm':
2486                         output_format = FIO_OUTPUT_TERSE;
2487                         break;
2488                 case 'F':
2489                         if (parse_output_format(optarg)) {
2490                                 log_err("fio: failed parsing output-format\n");
2491                                 exit_val = 1;
2492                                 do_exit++;
2493                                 break;
2494                         }
2495                         break;
2496                 case 'f':
2497                         output_format |= FIO_OUTPUT_TERSE;
2498                         break;
2499                 case 'h':
2500                         did_arg = true;
2501                         if (!cur_client) {
2502                                 usage(argv[0]);
2503                                 do_exit++;
2504                         }
2505                         break;
2506                 case 'c':
2507                         did_arg = true;
2508                         if (!cur_client) {
2509                                 fio_show_option_help(optarg);
2510                                 do_exit++;
2511                         }
2512                         break;
2513                 case 'i':
2514                         did_arg = true;
2515                         if (!cur_client) {
2516                                 fio_show_ioengine_help(optarg);
2517                                 do_exit++;
2518                         }
2519                         break;
2520                 case 's':
2521                         did_arg = true;
2522                         dump_cmdline = 1;
2523                         break;
2524                 case 'r':
2525                         read_only = 1;
2526                         break;
2527                 case 'v':
2528                         did_arg = true;
2529                         if (!cur_client) {
2530                                 log_info("%s\n", fio_version_string);
2531                                 do_exit++;
2532                         }
2533                         break;
2534                 case 'V':
2535                         terse_version = atoi(optarg);
2536                         if (!(terse_version >= 2 && terse_version <= 5)) {
2537                                 log_err("fio: bad terse version format\n");
2538                                 exit_val = 1;
2539                                 do_exit++;
2540                         }
2541                         break;
2542                 case 'e':
2543                         if (!strcmp("always", optarg))
2544                                 eta_print = FIO_ETA_ALWAYS;
2545                         else if (!strcmp("never", optarg))
2546                                 eta_print = FIO_ETA_NEVER;
2547                         break;
2548                 case 'E': {
2549                         long long t = 0;
2550
2551                         if (check_str_time(optarg, &t, 1)) {
2552                                 log_err("fio: failed parsing eta time %s\n", optarg);
2553                                 exit_val = 1;
2554                                 do_exit++;
2555                                 break;
2556                         }
2557                         eta_new_line = t / 1000;
2558                         if (!eta_new_line) {
2559                                 log_err("fio: eta new line time too short\n");
2560                                 exit_val = 1;
2561                                 do_exit++;
2562                         }
2563                         break;
2564                         }
2565                 case 'O': {
2566                         long long t = 0;
2567
2568                         if (check_str_time(optarg, &t, 1)) {
2569                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2570                                 exit_val = 1;
2571                                 do_exit++;
2572                                 break;
2573                         }
2574                         eta_interval_msec = t / 1000;
2575                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2576                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2577                                 exit_val = 1;
2578                                 do_exit++;
2579                         }
2580                         break;
2581                         }
2582                 case 'd':
2583                         if (set_debug(optarg))
2584                                 do_exit++;
2585                         break;
2586                 case 'P':
2587                         did_arg = true;
2588                         parse_only = 1;
2589                         break;
2590                 case 'x': {
2591                         size_t new_size;
2592
2593                         if (!strcmp(optarg, "global")) {
2594                                 log_err("fio: can't use global as only "
2595                                         "section\n");
2596                                 do_exit++;
2597                                 exit_val = 1;
2598                                 break;
2599                         }
2600                         new_size = (nr_job_sections + 1) * sizeof(char *);
2601                         job_sections = realloc(job_sections, new_size);
2602                         job_sections[nr_job_sections] = strdup(optarg);
2603                         nr_job_sections++;
2604                         break;
2605                         }
2606 #ifdef CONFIG_ZLIB
2607                 case 'X':
2608                         exit_val = iolog_file_inflate(optarg);
2609                         did_arg = true;
2610                         do_exit++;
2611                         break;
2612 #endif
2613                 case 'p':
2614                         did_arg = true;
2615                         if (exec_profile)
2616                                 free(exec_profile);
2617                         exec_profile = strdup(optarg);
2618                         break;
2619                 case FIO_GETOPT_JOB: {
2620                         const char *opt = l_opts[lidx].name;
2621                         char *val = optarg;
2622
2623                         if (!strncmp(opt, "name", 4) && td) {
2624                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2625                                 if (ret)
2626                                         goto out_free;
2627                                 td = NULL;
2628                                 did_arg = true;
2629                         }
2630                         if (!td) {
2631                                 int is_section = !strncmp(opt, "name", 4);
2632                                 int global = 0;
2633
2634                                 if (!is_section || !strncmp(val, "global", 6))
2635                                         global = 1;
2636
2637                                 if (is_section && skip_this_section(val))
2638                                         continue;
2639
2640                                 td = get_new_job(global, &def_thread, true, NULL);
2641                                 if (!td || ioengine_load(td)) {
2642                                         if (td) {
2643                                                 put_job(td);
2644                                                 td = NULL;
2645                                         }
2646                                         do_exit++;
2647                                         exit_val = 1;
2648                                         break;
2649                                 }
2650                                 fio_options_set_ioengine_opts(l_opts, td);
2651                         }
2652
2653                         if ((!val || !strlen(val)) &&
2654                             l_opts[lidx].has_arg == required_argument) {
2655                                 log_err("fio: option %s requires an argument\n", opt);
2656                                 ret = 1;
2657                         } else
2658                                 ret = fio_cmd_option_parse(td, opt, val);
2659
2660                         if (ret) {
2661                                 if (td) {
2662                                         put_job(td);
2663                                         td = NULL;
2664                                 }
2665                                 do_exit++;
2666                                 exit_val = 1;
2667                         }
2668
2669                         if (!ret && !strcmp(opt, "ioengine")) {
2670                                 if (ioengine_load(td)) {
2671                                         put_job(td);
2672                                         td = NULL;
2673                                         do_exit++;
2674                                         exit_val = 1;
2675                                         break;
2676                                 }
2677                                 fio_options_set_ioengine_opts(l_opts, td);
2678                         }
2679                         break;
2680                 }
2681                 case FIO_GETOPT_IOENGINE: {
2682                         const char *opt = l_opts[lidx].name;
2683                         char *val = optarg;
2684
2685                         if (!td)
2686                                 break;
2687
2688                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2689                         break;
2690                 }
2691                 case 'w':
2692                         warnings_fatal = 1;
2693                         break;
2694                 case 'j':
2695                         max_jobs = atoi(optarg);
2696                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2697                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2698                                 do_exit++;
2699                                 exit_val = 1;
2700                         }
2701                         break;
2702                 case 'S':
2703                         did_arg = true;
2704 #ifndef CONFIG_NO_SHM
2705                         if (nr_clients) {
2706                                 log_err("fio: can't be both client and server\n");
2707                                 do_exit++;
2708                                 exit_val = 1;
2709                                 break;
2710                         }
2711                         if (optarg)
2712                                 fio_server_set_arg(optarg);
2713                         is_backend = 1;
2714                         backend = 1;
2715 #else
2716                         log_err("fio: client/server requires SHM support\n");
2717                         do_exit++;
2718                         exit_val = 1;
2719 #endif
2720                         break;
2721                 case 'D':
2722                         if (pid_file)
2723                                 free(pid_file);
2724                         pid_file = strdup(optarg);
2725                         break;
2726                 case 'I':
2727                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2728                                 /* exit on error and calibration only */
2729                                 did_arg = true;
2730                                 do_exit++;
2731                                 if (ret == -1)
2732                                         exit_val = 1;
2733                         }
2734                         break;
2735                 case 'C':
2736                         did_arg = true;
2737                         if (is_backend) {
2738                                 log_err("fio: can't be both client and server\n");
2739                                 do_exit++;
2740                                 exit_val = 1;
2741                                 break;
2742                         }
2743                         /* if --client parameter contains a pathname */
2744                         if (0 == access(optarg, R_OK)) {
2745                                 /* file contains a list of host addrs or names */
2746                                 char hostaddr[PATH_MAX] = {0};
2747                                 char formatstr[8];
2748                                 FILE * hostf = fopen(optarg, "r");
2749                                 if (!hostf) {
2750                                         log_err("fio: could not open client list file %s for read\n", optarg);
2751                                         do_exit++;
2752                                         exit_val = 1;
2753                                         break;
2754                                 }
2755                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2756                                 /*
2757                                  * read at most PATH_MAX-1 chars from each
2758                                  * record in this file
2759                                  */
2760                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2761                                         /* expect EVERY host in file to be valid */
2762                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2763                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2764                                                 do_exit++;
2765                                                 exit_val = 1;
2766                                                 break;
2767                                         }
2768                                 }
2769                                 fclose(hostf);
2770                                 break; /* no possibility of job file for "this client only" */
2771                         }
2772                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2773                                 log_err("fio: failed adding client %s\n", optarg);
2774                                 do_exit++;
2775                                 exit_val = 1;
2776                                 break;
2777                         }
2778                         /*
2779                          * If the next argument exists and isn't an option,
2780                          * assume it's a job file for this client only.
2781                          */
2782                         while (optind < argc) {
2783                                 if (!strncmp(argv[optind], "--", 2) ||
2784                                     !strncmp(argv[optind], "-", 1))
2785                                         break;
2786
2787                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2788                                         break;
2789                                 optind++;
2790                         }
2791                         break;
2792                 case 'R':
2793                         did_arg = true;
2794                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2795                                 do_exit++;
2796                                 exit_val = 1;
2797                         }
2798                         break;
2799                 case 'T':
2800                         did_arg = true;
2801                         do_exit++;
2802                         exit_val = fio_monotonic_clocktest(1);
2803                         break;
2804                 case 'G':
2805                         did_arg = true;
2806                         do_exit++;
2807                         exit_val = fio_crctest(optarg);
2808                         break;
2809                 case 'M':
2810                         did_arg = true;
2811                         do_exit++;
2812                         exit_val = fio_memcpy_test(optarg);
2813                         break;
2814                 case 'L': {
2815                         long long val;
2816
2817                         if (check_str_time(optarg, &val, 1)) {
2818                                 log_err("fio: failed parsing time %s\n", optarg);
2819                                 do_exit++;
2820                                 exit_val = 1;
2821                                 break;
2822                         }
2823                         if (val < 1000) {
2824                                 log_err("fio: status interval too small\n");
2825                                 do_exit++;
2826                                 exit_val = 1;
2827                         }
2828                         status_interval = val / 1000;
2829                         break;
2830                         }
2831                 case 'W':
2832                         if (trigger_file)
2833                                 free(trigger_file);
2834                         trigger_file = strdup(optarg);
2835                         break;
2836                 case 'H':
2837                         if (trigger_cmd)
2838                                 free(trigger_cmd);
2839                         trigger_cmd = strdup(optarg);
2840                         break;
2841                 case 'J':
2842                         if (trigger_remote_cmd)
2843                                 free(trigger_remote_cmd);
2844                         trigger_remote_cmd = strdup(optarg);
2845                         break;
2846                 case 'K':
2847                         if (aux_path)
2848                                 free(aux_path);
2849                         aux_path = strdup(optarg);
2850                         break;
2851                 case 'B':
2852                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2853                                 log_err("fio: failed parsing time %s\n", optarg);
2854                                 do_exit++;
2855                                 exit_val = 1;
2856                         }
2857                         trigger_timeout /= 1000000;
2858                         break;
2859                 case '?':
2860                         log_err("%s: unrecognized option '%s'\n", argv[0],
2861                                                         argv[optind - 1]);
2862                         show_closest_option(argv[optind - 1]);
2863                 default:
2864                         do_exit++;
2865                         exit_val = 1;
2866                         break;
2867                 }
2868                 if (do_exit)
2869                         break;
2870         }
2871
2872         if (do_exit && !(is_backend || nr_clients))
2873                 exit(exit_val);
2874
2875         if (nr_clients && fio_clients_connect())
2876                 exit(1);
2877
2878         if (is_backend && backend)
2879                 return fio_start_server(pid_file);
2880         else if (pid_file)
2881                 free(pid_file);
2882
2883         if (td) {
2884                 if (!ret) {
2885                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2886                         if (ret)
2887                                 exit(1);
2888                 }
2889         }
2890
2891         while (!ret && optind < argc) {
2892                 ini_idx++;
2893                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2894                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2895                 optind++;
2896         }
2897
2898 out_free:
2899         return ini_idx;
2900 }
2901
2902 int fio_init_options(void)
2903 {
2904         f_out = stdout;
2905         f_err = stderr;
2906
2907         fio_options_fill_optstring();
2908         fio_options_dup_and_init(l_opts);
2909
2910         atexit(free_shm);
2911
2912         if (fill_def_thread())
2913                 return 1;
2914
2915         return 0;
2916 }
2917
2918 extern int fio_check_options(struct thread_options *);
2919
2920 int parse_options(int argc, char *argv[])
2921 {
2922         const int type = FIO_CLIENT_TYPE_CLI;
2923         int job_files, i;
2924
2925         if (fio_init_options())
2926                 return 1;
2927         if (fio_test_cconv(&def_thread.o))
2928                 log_err("fio: failed internal cconv test\n");
2929
2930         job_files = parse_cmd_line(argc, argv, type);
2931
2932         if (job_files > 0) {
2933                 for (i = 0; i < job_files; i++) {
2934                         if (i && fill_def_thread())
2935                                 return 1;
2936                         if (nr_clients) {
2937                                 if (fio_clients_send_ini(ini_file[i]))
2938                                         return 1;
2939                                 free(ini_file[i]);
2940                         } else if (!is_backend) {
2941                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2942                                         return 1;
2943                                 free(ini_file[i]);
2944                         }
2945                 }
2946         } else if (nr_clients) {
2947                 if (fill_def_thread())
2948                         return 1;
2949                 if (fio_clients_send_ini(NULL))
2950                         return 1;
2951         }
2952
2953         free(ini_file);
2954         fio_options_free(&def_thread);
2955         filesetup_mem_free();
2956
2957         if (!thread_number) {
2958                 if (parse_dryrun())
2959                         return 0;
2960                 if (exec_profile)
2961                         return 0;
2962                 if (is_backend || nr_clients)
2963                         return 0;
2964                 if (did_arg)
2965                         return 0;
2966
2967                 log_err("No job(s) defined\n\n");
2968                 usage(argv[0]);
2969                 return 1;
2970         }
2971
2972         if (output_format & FIO_OUTPUT_NORMAL)
2973                 log_info("%s\n", fio_version_string);
2974
2975         return 0;
2976 }
2977
2978 void options_default_fill(struct thread_options *o)
2979 {
2980         memcpy(o, &def_thread.o, sizeof(*o));
2981 }
2982
2983 struct thread_data *get_global_options(void)
2984 {
2985         return &def_thread;
2986 }