init.c

   1 /*
   2  * This file contains job initialization and setup functions.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <fcntl.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <sys/ipc.h>
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14 #include <dlfcn.h>
  15
  16 #include "fio.h"
  17 #ifndef FIO_NO_HAVE_SHM_H
  18 #include <sys/shm.h>
  19 #endif
  20
  21 #include "parse.h"
  22 #include "smalloc.h"
  23 #include "filehash.h"
  24 #include "verify.h"
  25 #include "profile.h"
  26 #include "server.h"
  27 #include "idletime.h"
  28 #include "filelock.h"
  29 #include "steadystate.h"
  30
  31 #include "oslib/getopt.h"
  32 #include "oslib/strcasestr.h"
  33
  34 #include "crc/test.h"
  35 #include "lib/pow2.h"
  36 #include "lib/memcpy.h"
  37
  38 const char fio_version_string[] = FIO_VERSION;
  39
  40 #define FIO_RANDSEED            (0xb1899bedUL)
  41
  42 static char **ini_file;
  43 static int max_jobs = FIO_MAX_JOBS;
  44 static int dump_cmdline;
  45 static int parse_only;
  46
  47 static struct thread_data def_thread;
  48 struct thread_data *threads = NULL;
  49 static char **job_sections;
  50 static int nr_job_sections;
  51
  52 int exitall_on_terminate = 0;
  53 int output_format = FIO_OUTPUT_NORMAL;
  54 int eta_print = FIO_ETA_AUTO;
  55 unsigned int eta_interval_msec = 1000;
  56 int eta_new_line = 0;
  57 FILE *f_out = NULL;
  58 FILE *f_err = NULL;
  59 char *exec_profile = NULL;
  60 int warnings_fatal = 0;
  61 int terse_version = 3;
  62 int is_backend = 0;
  63 int nr_clients = 0;
  64 int log_syslog = 0;
  65
  66 int write_bw_log = 0;
  67 int read_only = 0;
  68 int status_interval = 0;
  69
  70 char *trigger_file = NULL;
  71 long long trigger_timeout = 0;
  72 char *trigger_cmd = NULL;
  73 char *trigger_remote_cmd = NULL;
  74
  75 char *aux_path = NULL;
  76
  77 static int prev_group_jobs;
  78
  79 unsigned long fio_debug = 0;
  80 unsigned int fio_debug_jobno = -1;
  81 unsigned int *fio_debug_jobp = NULL;
  82
  83 static char cmd_optstr[256];
  84 static bool did_arg;
  85
  86 #define FIO_CLIENT_FLAG         (1 << 16)
  87
  88 /*
  89  * Command line options. These will contain the above, plus a few
  90  * extra that only pertain to fio itself and not jobs.
  91  */
  92 static struct option l_opts[FIO_NR_OPTIONS] = {
  93         {
  94                 .name           = (char *) "output",
  95                 .has_arg        = required_argument,
  96                 .val            = 'o' | FIO_CLIENT_FLAG,
  97         },
  98         {
  99                 .name           = (char *) "latency-log",
 100                 .has_arg        = required_argument,
 101                 .val            = 'l' | FIO_CLIENT_FLAG,
 102         },
 103         {
 104                 .name           = (char *) "bandwidth-log",
 105                 .has_arg        = no_argument,
 106                 .val            = 'b' | FIO_CLIENT_FLAG,
 107         },
 108         {
 109                 .name           = (char *) "minimal",
 110                 .has_arg        = no_argument,
 111                 .val            = 'm' | FIO_CLIENT_FLAG,
 112         },
 113         {
 114                 .name           = (char *) "output-format",
 115                 .has_arg        = required_argument,
 116                 .val            = 'F' | FIO_CLIENT_FLAG,
 117         },
 118         {
 119                 .name           = (char *) "append-terse",
 120                 .has_arg        = optional_argument,
 121                 .val            = 'f',
 122         },
 123         {
 124                 .name           = (char *) "version",
 125                 .has_arg        = no_argument,
 126                 .val            = 'v' | FIO_CLIENT_FLAG,
 127         },
 128         {
 129                 .name           = (char *) "help",
 130                 .has_arg        = no_argument,
 131                 .val            = 'h' | FIO_CLIENT_FLAG,
 132         },
 133         {
 134                 .name           = (char *) "cmdhelp",
 135                 .has_arg        = optional_argument,
 136                 .val            = 'c' | FIO_CLIENT_FLAG,
 137         },
 138         {
 139                 .name           = (char *) "enghelp",
 140                 .has_arg        = optional_argument,
 141                 .val            = 'i' | FIO_CLIENT_FLAG,
 142         },
 143         {
 144                 .name           = (char *) "showcmd",
 145                 .has_arg        = no_argument,
 146                 .val            = 's' | FIO_CLIENT_FLAG,
 147         },
 148         {
 149                 .name           = (char *) "readonly",
 150                 .has_arg        = no_argument,
 151                 .val            = 'r' | FIO_CLIENT_FLAG,
 152         },
 153         {
 154                 .name           = (char *) "eta",
 155                 .has_arg        = required_argument,
 156                 .val            = 'e' | FIO_CLIENT_FLAG,
 157         },
 158         {
 159                 .name           = (char *) "eta-interval",
 160                 .has_arg        = required_argument,
 161                 .val            = 'O' | FIO_CLIENT_FLAG,
 162         },
 163         {
 164                 .name           = (char *) "eta-newline",
 165                 .has_arg        = required_argument,
 166                 .val            = 'E' | FIO_CLIENT_FLAG,
 167         },
 168         {
 169                 .name           = (char *) "debug",
 170                 .has_arg        = required_argument,
 171                 .val            = 'd' | FIO_CLIENT_FLAG,
 172         },
 173         {
 174                 .name           = (char *) "parse-only",
 175                 .has_arg        = no_argument,
 176                 .val            = 'P' | FIO_CLIENT_FLAG,
 177         },
 178         {
 179                 .name           = (char *) "section",
 180                 .has_arg        = required_argument,
 181                 .val            = 'x' | FIO_CLIENT_FLAG,
 182         },
 183 #ifdef CONFIG_ZLIB
 184         {
 185                 .name           = (char *) "inflate-log",
 186                 .has_arg        = required_argument,
 187                 .val            = 'X' | FIO_CLIENT_FLAG,
 188         },
 189 #endif
 190         {
 191                 .name           = (char *) "alloc-size",
 192                 .has_arg        = required_argument,
 193                 .val            = 'a' | FIO_CLIENT_FLAG,
 194         },
 195         {
 196                 .name           = (char *) "profile",
 197                 .has_arg        = required_argument,
 198                 .val            = 'p' | FIO_CLIENT_FLAG,
 199         },
 200         {
 201                 .name           = (char *) "warnings-fatal",
 202                 .has_arg        = no_argument,
 203                 .val            = 'w' | FIO_CLIENT_FLAG,
 204         },
 205         {
 206                 .name           = (char *) "max-jobs",
 207                 .has_arg        = required_argument,
 208                 .val            = 'j' | FIO_CLIENT_FLAG,
 209         },
 210         {
 211                 .name           = (char *) "terse-version",
 212                 .has_arg        = required_argument,
 213                 .val            = 'V' | FIO_CLIENT_FLAG,
 214         },
 215         {
 216                 .name           = (char *) "server",
 217                 .has_arg        = optional_argument,
 218                 .val            = 'S',
 219         },
 220         {       .name           = (char *) "daemonize",
 221                 .has_arg        = required_argument,
 222                 .val            = 'D',
 223         },
 224         {
 225                 .name           = (char *) "client",
 226                 .has_arg        = required_argument,
 227                 .val            = 'C',
 228         },
 229         {
 230                 .name           = (char *) "remote-config",
 231                 .has_arg        = required_argument,
 232                 .val            = 'R',
 233         },
 234         {
 235                 .name           = (char *) "cpuclock-test",
 236                 .has_arg        = no_argument,
 237                 .val            = 'T',
 238         },
 239         {
 240                 .name           = (char *) "crctest",
 241                 .has_arg        = optional_argument,
 242                 .val            = 'G',
 243         },
 244         {
 245                 .name           = (char *) "memcpytest",
 246                 .has_arg        = optional_argument,
 247                 .val            = 'M',
 248         },
 249         {
 250                 .name           = (char *) "idle-prof",
 251                 .has_arg        = required_argument,
 252                 .val            = 'I',
 253         },
 254         {
 255                 .name           = (char *) "status-interval",
 256                 .has_arg        = required_argument,
 257                 .val            = 'L',
 258         },
 259         {
 260                 .name           = (char *) "trigger-file",
 261                 .has_arg        = required_argument,
 262                 .val            = 'W',
 263         },
 264         {
 265                 .name           = (char *) "trigger-timeout",
 266                 .has_arg        = required_argument,
 267                 .val            = 'B',
 268         },
 269         {
 270                 .name           = (char *) "trigger",
 271                 .has_arg        = required_argument,
 272                 .val            = 'H',
 273         },
 274         {
 275                 .name           = (char *) "trigger-remote",
 276                 .has_arg        = required_argument,
 277                 .val            = 'J',
 278         },
 279         {
 280                 .name           = (char *) "aux-path",
 281                 .has_arg        = required_argument,
 282                 .val            = 'K',
 283         },
 284         {
 285                 .name           = NULL,
 286         },
 287 };
 288
 289 void free_threads_shm(void)
 290 {
 291         if (threads) {
 292                 void *tp = threads;
 293 #ifndef CONFIG_NO_SHM
 294                 struct shmid_ds sbuf;
 295
 296                 threads = NULL;
 297                 shmdt(tp);
 298                 shmctl(shm_id, IPC_RMID, &sbuf);
 299                 shm_id = -1;
 300 #else
 301                 threads = NULL;
 302                 free(tp);
 303 #endif
 304         }
 305 }
 306
 307 static void free_shm(void)
 308 {
 309         if (threads) {
 310                 flow_exit();
 311                 fio_debug_jobp = NULL;
 312                 free_threads_shm();
 313         }
 314
 315         free(trigger_file);
 316         free(trigger_cmd);
 317         free(trigger_remote_cmd);
 318         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 319
 320         options_free(fio_options, &def_thread.o);
 321         fio_filelock_exit();
 322         file_hash_exit();
 323         scleanup();
 324 }
 325
 326 /*
 327  * The thread area is shared between the main process and the job
 328  * threads/processes. So setup a shared memory segment that will hold
 329  * all the job info. We use the end of the region for keeping track of
 330  * open files across jobs, for file sharing.
 331  */
 332 static int setup_thread_area(void)
 333 {
 334         if (threads)
 335                 return 0;
 336
 337         /*
 338          * 1024 is too much on some machines, scale max_jobs if
 339          * we get a failure that looks like too large a shm segment
 340          */
 341         do {
 342                 size_t size = max_jobs * sizeof(struct thread_data);
 343
 344                 size += sizeof(unsigned int);
 345
 346 #ifndef CONFIG_NO_SHM
 347                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 348                 if (shm_id != -1)
 349                         break;
 350                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 351                         perror("shmget");
 352                         break;
 353                 }
 354 #else
 355                 threads = malloc(size);
 356                 if (threads)
 357                         break;
 358 #endif
 359
 360                 max_jobs >>= 1;
 361         } while (max_jobs);
 362
 363 #ifndef CONFIG_NO_SHM
 364         if (shm_id == -1)
 365                 return 1;
 366
 367         threads = shmat(shm_id, NULL, 0);
 368         if (threads == (void *) -1) {
 369                 perror("shmat");
 370                 return 1;
 371         }
 372         if (shm_attach_to_open_removed())
 373                 shmctl(shm_id, IPC_RMID, NULL);
 374 #endif
 375
 376         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 377         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
 378         *fio_debug_jobp = -1;
 379
 380         flow_init();
 381
 382         return 0;
 383 }
 384
 385 static void dump_print_option(struct print_option *p)
 386 {
 387         const char *delim;
 388
 389         if (!strcmp("description", p->name))
 390                 delim = "\"";
 391         else
 392                 delim = "";
 393
 394         log_info("--%s%s", p->name, p->value ? "" : " ");
 395         if (p->value)
 396                 log_info("=%s%s%s ", delim, p->value, delim);
 397 }
 398
 399 static void dump_opt_list(struct thread_data *td)
 400 {
 401         struct flist_head *entry;
 402         struct print_option *p;
 403
 404         if (flist_empty(&td->opt_list))
 405                 return;
 406
 407         flist_for_each(entry, &td->opt_list) {
 408                 p = flist_entry(entry, struct print_option, list);
 409                 dump_print_option(p);
 410         }
 411 }
 412
 413 static void fio_dump_options_free(struct thread_data *td)
 414 {
 415         while (!flist_empty(&td->opt_list)) {
 416                 struct print_option *p;
 417
 418                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 419                 flist_del_init(&p->list);
 420                 free(p->name);
 421                 free(p->value);
 422                 free(p);
 423         }
 424 }
 425
 426 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 427 {
 428         struct flist_head *entry;
 429
 430         if (flist_empty(&src->opt_list))
 431                 return;
 432
 433         flist_for_each(entry, &src->opt_list) {
 434                 struct print_option *srcp, *dstp;
 435
 436                 srcp = flist_entry(entry, struct print_option, list);
 437                 dstp = malloc(sizeof(*dstp));
 438                 dstp->name = strdup(srcp->name);
 439                 if (srcp->value)
 440                         dstp->value = strdup(srcp->value);
 441                 else
 442                         dstp->value = NULL;
 443                 flist_add_tail(&dstp->list, &dst->opt_list);
 444         }
 445 }
 446
 447 /*
 448  * Return a free job structure.
 449  */
 450 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 451                                        bool preserve_eo, const char *jobname)
 452 {
 453         struct thread_data *td;
 454
 455         if (global)
 456                 return &def_thread;
 457         if (setup_thread_area()) {
 458                 log_err("error: failed to setup shm segment\n");
 459                 return NULL;
 460         }
 461         if (thread_number >= max_jobs) {
 462                 log_err("error: maximum number of jobs (%d) reached.\n",
 463                                 max_jobs);
 464                 return NULL;
 465         }
 466
 467         td = &threads[thread_number++];
 468         *td = *parent;
 469
 470         INIT_FLIST_HEAD(&td->opt_list);
 471         if (parent != &def_thread)
 472                 copy_opt_list(td, parent);
 473
 474         td->io_ops = NULL;
 475         td->io_ops_init = 0;
 476         if (!preserve_eo)
 477                 td->eo = NULL;
 478
 479         td->o.uid = td->o.gid = -1U;
 480
 481         dup_files(td, parent);
 482         fio_options_mem_dupe(td);
 483
 484         profile_add_hooks(td);
 485
 486         td->thread_number = thread_number;
 487         td->subjob_number = 0;
 488
 489         if (jobname)
 490                 td->o.name = strdup(jobname);
 491
 492         if (!parent->o.group_reporting || parent == &def_thread)
 493                 stat_number++;
 494
 495         return td;
 496 }
 497
 498 static void put_job(struct thread_data *td)
 499 {
 500         if (td == &def_thread)
 501                 return;
 502
 503         profile_td_exit(td);
 504         flow_exit_job(td);
 505
 506         if (td->error)
 507                 log_info("fio: %s\n", td->verror);
 508
 509         fio_options_free(td);
 510         fio_dump_options_free(td);
 511         if (td->io_ops)
 512                 free_ioengine(td);
 513
 514         if (td->o.name)
 515                 free(td->o.name);
 516
 517         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 518         thread_number--;
 519 }
 520
 521 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 522 {
 523         unsigned int bs = td->o.min_bs[ddir];
 524
 525         assert(ddir_rw(ddir));
 526
 527         if (td->o.rate[ddir])
 528                 td->rate_bps[ddir] = td->o.rate[ddir];
 529         else
 530                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 531
 532         if (!td->rate_bps[ddir]) {
 533                 log_err("rate lower than supported\n");
 534                 return -1;
 535         }
 536
 537         td->rate_next_io_time[ddir] = 0;
 538         td->rate_io_issue_bytes[ddir] = 0;
 539         td->last_usec[ddir] = 0;
 540         return 0;
 541 }
 542
 543 static int setup_rate(struct thread_data *td)
 544 {
 545         int ret = 0;
 546
 547         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 548                 ret = __setup_rate(td, DDIR_READ);
 549         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 550                 ret |= __setup_rate(td, DDIR_WRITE);
 551         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 552                 ret |= __setup_rate(td, DDIR_TRIM);
 553
 554         return ret;
 555 }
 556
 557 static int fixed_block_size(struct thread_options *o)
 558 {
 559         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 560                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 561                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 562                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 563                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 564 }
 565
 566
 567 static unsigned long long get_rand_start_delay(struct thread_data *td)
 568 {
 569         unsigned long long delayrange;
 570         uint64_t frand_max;
 571         unsigned long r;
 572
 573         delayrange = td->o.start_delay_high - td->o.start_delay;
 574
 575         frand_max = rand_max(&td->delay_state);
 576         r = __rand(&td->delay_state);
 577         delayrange = (unsigned long long) ((double) delayrange * (r / (frand_max + 1.0)));
 578
 579         delayrange += td->o.start_delay;
 580         return delayrange;
 581 }
 582
 583 /*
 584  * <3 Johannes
 585  */
 586 static unsigned int gcd(unsigned int m, unsigned int n)
 587 {
 588         if (!n)
 589                 return m;
 590
 591         return gcd(n, m % n);
 592 }
 593
 594 /*
 595  * Lazy way of fixing up options that depend on each other. We could also
 596  * define option callback handlers, but this is easier.
 597  */
 598 static int fixup_options(struct thread_data *td)
 599 {
 600         struct thread_options *o = &td->o;
 601         int ret = 0;
 602
 603 #ifndef CONFIG_PSHARED
 604         if (!o->use_thread) {
 605                 log_info("fio: this platform does not support process shared"
 606                          " mutexes, forcing use of threads. Use the 'thread'"
 607                          " option to get rid of this warning.\n");
 608                 o->use_thread = 1;
 609                 ret = warnings_fatal;
 610         }
 611 #endif
 612
 613         if (o->write_iolog_file && o->read_iolog_file) {
 614                 log_err("fio: read iolog overrides write_iolog\n");
 615                 free(o->write_iolog_file);
 616                 o->write_iolog_file = NULL;
 617                 ret = warnings_fatal;
 618         }
 619
 620         /*
 621          * only really works with 1 file
 622          */
 623         if (o->zone_size && o->open_files > 1)
 624                 o->zone_size = 0;
 625
 626         /*
 627          * If zone_range isn't specified, backward compatibility dictates it
 628          * should be made equal to zone_size.
 629          */
 630         if (o->zone_size && !o->zone_range)
 631                 o->zone_range = o->zone_size;
 632
 633         /*
 634          * Reads can do overwrites, we always need to pre-create the file
 635          */
 636         if (td_read(td))
 637                 o->overwrite = 1;
 638
 639         if (!o->min_bs[DDIR_READ])
 640                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 641         if (!o->max_bs[DDIR_READ])
 642                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 643         if (!o->min_bs[DDIR_WRITE])
 644                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 645         if (!o->max_bs[DDIR_WRITE])
 646                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 647         if (!o->min_bs[DDIR_TRIM])
 648                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 649         if (!o->max_bs[DDIR_TRIM])
 650                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 651
 652         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 653         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 654
 655         /*
 656          * For random IO, allow blockalign offset other than min_bs.
 657          */
 658         if (!o->ba[DDIR_READ] || !td_random(td))
 659                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 660         if (!o->ba[DDIR_WRITE] || !td_random(td))
 661                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 662         if (!o->ba[DDIR_TRIM] || !td_random(td))
 663                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 664
 665         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 666             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 667             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 668             !o->norandommap) {
 669                 log_err("fio: Any use of blockalign= turns off randommap\n");
 670                 o->norandommap = 1;
 671                 ret = warnings_fatal;
 672         }
 673
 674         if (!o->file_size_high)
 675                 o->file_size_high = o->file_size_low;
 676
 677         if (o->start_delay_high)
 678                 o->start_delay = get_rand_start_delay(td);
 679
 680         if (o->norandommap && o->verify != VERIFY_NONE
 681             && !fixed_block_size(o))  {
 682                 log_err("fio: norandommap given for variable block sizes, "
 683                         "verify limited\n");
 684                 ret = warnings_fatal;
 685         }
 686         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 687                 log_err("fio: bs_unaligned may not work with raw io\n");
 688
 689         /*
 690          * thinktime_spin must be less than thinktime
 691          */
 692         if (o->thinktime_spin > o->thinktime)
 693                 o->thinktime_spin = o->thinktime;
 694
 695         /*
 696          * The low water mark cannot be bigger than the iodepth
 697          */
 698         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 699                 o->iodepth_low = o->iodepth;
 700
 701         /*
 702          * If batch number isn't set, default to the same as iodepth
 703          */
 704         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 705                 o->iodepth_batch = o->iodepth;
 706
 707         /*
 708          * If max batch complete number isn't set or set incorrectly,
 709          * default to the same as iodepth_batch_complete_min
 710          */
 711         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 712                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 713
 714         /*
 715          * There's no need to check for in-flight overlapping IOs if the job
 716          * isn't changing data or the maximum iodepth is guaranteed to be 1
 717          */
 718         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 719             (!(td_write(td) || td_trim(td)) || o->iodepth == 1))
 720                 o->serialize_overlap = 0;
 721         /*
 722          * Currently can't check for overlaps in offload mode
 723          */
 724         if (o->serialize_overlap && o->io_submit_mode == IO_MODE_OFFLOAD) {
 725                 log_err("fio: checking for in-flight overlaps when the "
 726                         "io_submit_mode is offload is not supported\n");
 727                 o->serialize_overlap = 0;
 728                 ret = warnings_fatal;
 729         }
 730
 731         if (o->nr_files > td->files_index)
 732                 o->nr_files = td->files_index;
 733
 734         if (o->open_files > o->nr_files || !o->open_files)
 735                 o->open_files = o->nr_files;
 736
 737         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 738             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 739             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 740             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 741                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 742                 ret = 1;
 743         }
 744         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 745             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 746             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 747             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 748             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 749             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 750                 log_err("fio: minimum rate exceeds rate\n");
 751                 ret = 1;
 752         }
 753
 754         if (!o->timeout && o->time_based) {
 755                 log_err("fio: time_based requires a runtime/timeout setting\n");
 756                 o->time_based = 0;
 757                 ret = warnings_fatal;
 758         }
 759
 760         if (o->fill_device && !o->size)
 761                 o->size = -1ULL;
 762
 763         if (o->verify != VERIFY_NONE) {
 764                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 765                     (o->filename ||
 766                      !(o->unique_filename &&
 767                        strstr(o->filename_format, "$jobname") &&
 768                        strstr(o->filename_format, "$jobnum") &&
 769                        strstr(o->filename_format, "$filenum")))) {
 770                         log_info("fio: multiple writers may overwrite blocks "
 771                                 "that belong to other jobs. This can cause "
 772                                 "verification failures.\n");
 773                         ret = warnings_fatal;
 774                 }
 775
 776                 /*
 777                  * Warn if verification is requested but no verification of any
 778                  * kind can be started due to time constraints
 779                  */
 780                 if (td_write(td) && o->do_verify && o->timeout &&
 781                     o->time_based && !td_read(td) && !o->verify_backlog) {
 782                         log_info("fio: verification read phase will never "
 783                                  "start because write phase uses all of "
 784                                  "runtime\n");
 785                         ret = warnings_fatal;
 786                 }
 787
 788                 if (!fio_option_is_set(o, refill_buffers))
 789                         o->refill_buffers = 1;
 790
 791                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 792                     !o->verify_interval)
 793                         o->verify_interval = o->min_bs[DDIR_WRITE];
 794
 795                 /*
 796                  * Verify interval must be smaller or equal to the
 797                  * write size.
 798                  */
 799                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 800                         o->verify_interval = o->min_bs[DDIR_WRITE];
 801                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 802                         o->verify_interval = o->min_bs[DDIR_READ];
 803
 804                 /*
 805                  * Verify interval must be a factor of both min and max
 806                  * write size
 807                  */
 808                 if (!o->verify_interval ||
 809                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 810                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 811                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 812                                                         o->max_bs[DDIR_WRITE]);
 813         }
 814
 815         if (o->pre_read) {
 816                 if (o->invalidate_cache)
 817                         o->invalidate_cache = 0;
 818                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 819                         log_info("fio: cannot pre-read files with an IO engine"
 820                                  " that isn't seekable. Pre-read disabled.\n");
 821                         ret = warnings_fatal;
 822                 }
 823         }
 824
 825         if (!o->unit_base) {
 826                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 827                         o->unit_base = 1;
 828                 else
 829                         o->unit_base = 8;
 830         }
 831
 832 #ifndef FIO_HAVE_ANY_FALLOCATE
 833         /* Platform doesn't support any fallocate so force it to none */
 834         o->fallocate_mode = FIO_FALLOCATE_NONE;
 835 #endif
 836
 837 #ifndef CONFIG_FDATASYNC
 838         if (o->fdatasync_blocks) {
 839                 log_info("fio: this platform does not support fdatasync()"
 840                          " falling back to using fsync().  Use the 'fsync'"
 841                          " option instead of 'fdatasync' to get rid of"
 842                          " this warning\n");
 843                 o->fsync_blocks = o->fdatasync_blocks;
 844                 o->fdatasync_blocks = 0;
 845                 ret = warnings_fatal;
 846         }
 847 #endif
 848
 849 #ifdef WIN32
 850         /*
 851          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 852          * so fail if we're passed those flags
 853          */
 854         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 855                 log_err("fio: Windows does not support direct or non-buffered io with"
 856                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 857                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 858                 ret = 1;
 859         }
 860 #endif
 861
 862         /*
 863          * For fully compressible data, just zero them at init time.
 864          * It's faster than repeatedly filling it. For non-zero
 865          * compression, we should have refill_buffers set. Set it, unless
 866          * the job file already changed it.
 867          */
 868         if (o->compress_percentage) {
 869                 if (o->compress_percentage == 100) {
 870                         o->zero_buffers = 1;
 871                         o->compress_percentage = 0;
 872                 } else if (!fio_option_is_set(o, refill_buffers)) {
 873                         o->refill_buffers = 1;
 874                         td->flags |= TD_F_REFILL_BUFFERS;
 875                 }
 876         }
 877
 878         /*
 879          * Using a non-uniform random distribution excludes usage of
 880          * a random map
 881          */
 882         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 883                 o->norandommap = 1;
 884
 885         /*
 886          * If size is set but less than the min block size, complain
 887          */
 888         if (o->size && o->size < td_min_bs(td)) {
 889                 log_err("fio: size too small, must not be less than minimum block size: %llu < %u\n",
 890                         (unsigned long long) o->size, td_min_bs(td));
 891                 ret = 1;
 892         }
 893
 894         /*
 895          * O_ATOMIC implies O_DIRECT
 896          */
 897         if (o->oatomic)
 898                 o->odirect = 1;
 899
 900         /*
 901          * If randseed is set, that overrides randrepeat
 902          */
 903         if (fio_option_is_set(o, rand_seed))
 904                 o->rand_repeatable = 0;
 905
 906         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 907                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 908                 ret = 1;
 909         }
 910
 911         if (fio_option_is_set(o, gtod_cpu)) {
 912                 fio_gtod_init();
 913                 fio_gtod_set_cpu(o->gtod_cpu);
 914                 fio_gtod_offload = 1;
 915         }
 916
 917         td->loops = o->loops;
 918         if (!td->loops)
 919                 td->loops = 1;
 920
 921         if (o->block_error_hist && o->nr_files != 1) {
 922                 log_err("fio: block error histogram only available "
 923                         "with a single file per job, but %d files "
 924                         "provided\n", o->nr_files);
 925                 ret = 1;
 926         }
 927
 928         if (fio_option_is_set(o, clat_percentiles) &&
 929             !fio_option_is_set(o, lat_percentiles)) {
 930                 o->lat_percentiles = !o->clat_percentiles;
 931         } else if (fio_option_is_set(o, lat_percentiles) &&
 932                    !fio_option_is_set(o, clat_percentiles)) {
 933                 o->clat_percentiles = !o->lat_percentiles;
 934         } else if (fio_option_is_set(o, lat_percentiles) &&
 935                    fio_option_is_set(o, clat_percentiles) &&
 936                    o->lat_percentiles && o->clat_percentiles) {
 937                 log_err("fio: lat_percentiles and clat_percentiles are "
 938                         "mutually exclusive\n");
 939                 ret = 1;
 940         }
 941
 942         if (o->disable_lat)
 943                 o->lat_percentiles = 0;
 944         if (o->disable_clat)
 945                 o->clat_percentiles = 0;
 946
 947         /*
 948          * Fix these up to be nsec internally
 949          */
 950         o->max_latency *= 1000ULL;
 951         o->latency_target *= 1000ULL;
 952         o->latency_window *= 1000ULL;
 953
 954         return ret;
 955 }
 956
 957 static void init_rand_file_service(struct thread_data *td)
 958 {
 959         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 960         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 961
 962         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 963                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 964                 zipf_disable_hash(&td->next_file_zipf);
 965         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 966                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 967                 zipf_disable_hash(&td->next_file_zipf);
 968         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 969                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 970                 gauss_disable_hash(&td->next_file_gauss);
 971         }
 972 }
 973
 974 void td_fill_verify_state_seed(struct thread_data *td)
 975 {
 976         bool use64;
 977
 978         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 979                 use64 = true;
 980         else
 981                 use64 = false;
 982
 983         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
 984                 use64);
 985 }
 986
 987 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
 988 {
 989         int i;
 990
 991         /*
 992          * trimwrite is special in that we need to generate the same
 993          * offsets to get the "write after trim" effect. If we are
 994          * using bssplit to set buffer length distributions, ensure that
 995          * we seed the trim and write generators identically.
 996          */
 997         if (td_trimwrite(td)) {
 998                 init_rand_seed(&td->bsrange_state[DDIR_READ], td->rand_seeds[FIO_RAND_BS_OFF], use64);
 999                 init_rand_seed(&td->bsrange_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
1000                 init_rand_seed(&td->bsrange_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
1001         } else {
1002                 init_rand_seed(&td->bsrange_state[DDIR_READ], td->rand_seeds[FIO_RAND_BS_OFF], use64);
1003                 init_rand_seed(&td->bsrange_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
1004                 init_rand_seed(&td->bsrange_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_BS2_OFF], use64);
1005         }
1006
1007         td_fill_verify_state_seed(td);
1008         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1009
1010         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1011                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1012         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1013                 init_rand_file_service(td);
1014
1015         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1016         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1017         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1018         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1019         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1020         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1021         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1022         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1023
1024         if (!td_random(td))
1025                 return;
1026
1027         if (td->o.rand_repeatable)
1028                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1029
1030         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1031
1032         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1033                 struct frand_state *s = &td->seq_rand_state[i];
1034
1035                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1036         }
1037 }
1038
1039 void td_fill_rand_seeds(struct thread_data *td)
1040 {
1041         bool use64;
1042
1043         if (td->o.allrand_repeatable) {
1044                 unsigned int i;
1045
1046                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1047                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1048                                 + i;
1049         }
1050
1051         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1052                 use64 = true;
1053         else
1054                 use64 = false;
1055
1056         td_fill_rand_seeds_internal(td, use64);
1057
1058         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1059         frand_copy(&td->buf_state_prev, &td->buf_state);
1060 }
1061
1062 /*
1063  * Initializes the ioengine configured for a job, if it has not been done so
1064  * already.
1065  */
1066 int ioengine_load(struct thread_data *td)
1067 {
1068         if (!td->o.ioengine) {
1069                 log_err("fio: internal fault, no IO engine specified\n");
1070                 return 1;
1071         }
1072
1073         if (td->io_ops) {
1074                 struct ioengine_ops *ops;
1075                 void *dlhandle;
1076
1077                 /* An engine is loaded, but the requested ioengine
1078                  * may have changed.
1079                  */
1080                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1081                         /* The right engine is already loaded */
1082                         return 0;
1083                 }
1084
1085                 /*
1086                  * Name of file and engine may be different, load ops
1087                  * for this name and see if they match. If they do, then
1088                  * the engine is unchanged.
1089                  */
1090                 dlhandle = td->io_ops_dlhandle;
1091                 ops = load_ioengine(td);
1092                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1093                         if (dlhandle)
1094                                 dlclose(dlhandle);
1095                         return 0;
1096                 }
1097
1098                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1099                         dlclose(dlhandle);
1100
1101                 /* Unload the old engine. */
1102                 free_ioengine(td);
1103         }
1104
1105         td->io_ops = load_ioengine(td);
1106         if (!td->io_ops) {
1107                 log_err("fio: failed to load engine\n");
1108                 return 1;
1109         }
1110
1111         if (td->io_ops->option_struct_size && td->io_ops->options) {
1112                 /*
1113                  * In cases where td->eo is set, clone it for a child thread.
1114                  * This requires that the parent thread has the same ioengine,
1115                  * but that requirement must be enforced by the code which
1116                  * cloned the thread.
1117                  */
1118                 void *origeo = td->eo;
1119                 /*
1120                  * Otherwise use the default thread options.
1121                  */
1122                 if (!origeo && td != &def_thread && def_thread.eo &&
1123                     def_thread.io_ops->options == td->io_ops->options)
1124                         origeo = def_thread.eo;
1125
1126                 options_init(td->io_ops->options);
1127                 td->eo = malloc(td->io_ops->option_struct_size);
1128                 /*
1129                  * Use the default thread as an option template if this uses the
1130                  * same options structure and there are non-default options
1131                  * used.
1132                  */
1133                 if (origeo) {
1134                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1135                         options_mem_dupe(td->io_ops->options, td->eo);
1136                 } else {
1137                         memset(td->eo, 0, td->io_ops->option_struct_size);
1138                         fill_default_options(td->eo, td->io_ops->options);
1139                 }
1140                 *(struct thread_data **)td->eo = td;
1141         }
1142
1143         if (td->o.odirect)
1144                 td->io_ops->flags |= FIO_RAWIO;
1145
1146         td_set_ioengine_flags(td);
1147         return 0;
1148 }
1149
1150 static void init_flags(struct thread_data *td)
1151 {
1152         struct thread_options *o = &td->o;
1153         int i;
1154
1155         if (o->verify_backlog)
1156                 td->flags |= TD_F_VER_BACKLOG;
1157         if (o->trim_backlog)
1158                 td->flags |= TD_F_TRIM_BACKLOG;
1159         if (o->read_iolog_file)
1160                 td->flags |= TD_F_READ_IOLOG;
1161         if (o->refill_buffers)
1162                 td->flags |= TD_F_REFILL_BUFFERS;
1163         /*
1164          * Always scramble buffers if asked to
1165          */
1166         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1167                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1168         /*
1169          * But also scramble buffers, unless we were explicitly asked
1170          * to zero them.
1171          */
1172         if (o->scramble_buffers && !(o->zero_buffers &&
1173             fio_option_is_set(o, zero_buffers)))
1174                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1175         if (o->verify != VERIFY_NONE)
1176                 td->flags |= TD_F_VER_NONE;
1177
1178         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1179                 td->flags |= TD_F_NEED_LOCK;
1180
1181         if (o->mem_type == MEM_CUDA_MALLOC)
1182                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1183
1184         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1185                 if (option_check_rate(td, i)) {
1186                         td->flags |= TD_F_CHECK_RATE;
1187                         break;
1188                 }
1189         }
1190 }
1191
1192 static int setup_random_seeds(struct thread_data *td)
1193 {
1194         unsigned long seed;
1195         unsigned int i;
1196
1197         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1198                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1199                 if (!ret)
1200                         td_fill_rand_seeds(td);
1201                 return ret;
1202         }
1203
1204         seed = td->o.rand_seed;
1205         for (i = 0; i < 4; i++)
1206                 seed *= 0x9e370001UL;
1207
1208         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1209                 td->rand_seeds[i] = seed * td->thread_number + i;
1210                 seed *= 0x9e370001UL;
1211         }
1212
1213         td_fill_rand_seeds(td);
1214         return 0;
1215 }
1216
1217 enum {
1218         FPRE_NONE = 0,
1219         FPRE_JOBNAME,
1220         FPRE_JOBNUM,
1221         FPRE_FILENUM
1222 };
1223
1224 static struct fpre_keyword {
1225         const char *keyword;
1226         size_t strlen;
1227         int key;
1228 } fpre_keywords[] = {
1229         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1230         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1231         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1232         { .keyword = NULL, },
1233         };
1234
1235 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1236                            const char *jobname, int jobnum, int filenum)
1237 {
1238         struct fpre_keyword *f;
1239         char copy[PATH_MAX];
1240         size_t dst_left = PATH_MAX - 1;
1241
1242         if (!o->filename_format || !strlen(o->filename_format)) {
1243                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1244                 return buf;
1245         }
1246
1247         for (f = &fpre_keywords[0]; f->keyword; f++)
1248                 f->strlen = strlen(f->keyword);
1249
1250         buf[buf_size - 1] = '\0';
1251         strncpy(buf, o->filename_format, buf_size - 1);
1252
1253         memset(copy, 0, sizeof(copy));
1254         for (f = &fpre_keywords[0]; f->keyword; f++) {
1255                 do {
1256                         size_t pre_len, post_start = 0;
1257                         char *str, *dst = copy;
1258
1259                         str = strcasestr(buf, f->keyword);
1260                         if (!str)
1261                                 break;
1262
1263                         pre_len = str - buf;
1264                         if (strlen(str) != f->strlen)
1265                                 post_start = pre_len + f->strlen;
1266
1267                         if (pre_len) {
1268                                 strncpy(dst, buf, pre_len);
1269                                 dst += pre_len;
1270                                 dst_left -= pre_len;
1271                         }
1272
1273                         switch (f->key) {
1274                         case FPRE_JOBNAME: {
1275                                 int ret;
1276
1277                                 ret = snprintf(dst, dst_left, "%s", jobname);
1278                                 if (ret < 0)
1279                                         break;
1280                                 else if (ret > dst_left) {
1281                                         log_err("fio: truncated filename\n");
1282                                         dst += dst_left;
1283                                         dst_left = 0;
1284                                 } else {
1285                                         dst += ret;
1286                                         dst_left -= ret;
1287                                 }
1288                                 break;
1289                                 }
1290                         case FPRE_JOBNUM: {
1291                                 int ret;
1292
1293                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1294                                 if (ret < 0)
1295                                         break;
1296                                 else if (ret > dst_left) {
1297                                         log_err("fio: truncated filename\n");
1298                                         dst += dst_left;
1299                                         dst_left = 0;
1300                                 } else {
1301                                         dst += ret;
1302                                         dst_left -= ret;
1303                                 }
1304                                 break;
1305                                 }
1306                         case FPRE_FILENUM: {
1307                                 int ret;
1308
1309                                 ret = snprintf(dst, dst_left, "%d", filenum);
1310                                 if (ret < 0)
1311                                         break;
1312                                 else if (ret > dst_left) {
1313                                         log_err("fio: truncated filename\n");
1314                                         dst += dst_left;
1315                                         dst_left = 0;
1316                                 } else {
1317                                         dst += ret;
1318                                         dst_left -= ret;
1319                                 }
1320                                 break;
1321                                 }
1322                         default:
1323                                 assert(0);
1324                                 break;
1325                         }
1326
1327                         if (post_start)
1328                                 strncpy(dst, buf + post_start, dst_left);
1329
1330                         strncpy(buf, copy, buf_size - 1);
1331                 } while (1);
1332         }
1333
1334         return buf;
1335 }
1336
1337 bool parse_dryrun(void)
1338 {
1339         return dump_cmdline || parse_only;
1340 }
1341
1342 static void gen_log_name(char *name, size_t size, const char *logtype,
1343                          const char *logname, unsigned int num,
1344                          const char *suf, int per_job)
1345 {
1346         if (per_job)
1347                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1348         else
1349                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1350 }
1351
1352 static int check_waitees(char *waitee)
1353 {
1354         struct thread_data *td;
1355         int i, ret = 0;
1356
1357         for_each_td(td, i) {
1358                 if (td->subjob_number)
1359                         continue;
1360
1361                 ret += !strcmp(td->o.name, waitee);
1362         }
1363
1364         return ret;
1365 }
1366
1367 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1368 {
1369         int nw;
1370
1371         if (!o->wait_for)
1372                 return true;
1373
1374         if (!strcmp(jobname, o->wait_for)) {
1375                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1376                                 jobname, o->wait_for);
1377                 return false;
1378         }
1379
1380         if (!(nw = check_waitees(o->wait_for))) {
1381                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1382                 return false;
1383         }
1384
1385         if (nw > 1) {
1386                 log_err("%s: multiple waitees %s found,\n"
1387                         "please avoid duplicates when using wait_for option.\n",
1388                                 jobname, o->wait_for);
1389                 return false;
1390         }
1391
1392         return true;
1393 }
1394
1395 /*
1396  * Adds a job to the list of things todo. Sanitizes the various options
1397  * to make sure we don't have conflicts, and initializes various
1398  * members of td.
1399  */
1400 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1401                    int recursed, int client_type)
1402 {
1403         unsigned int i;
1404         char fname[PATH_MAX];
1405         int numjobs, file_alloced;
1406         struct thread_options *o = &td->o;
1407         char logname[PATH_MAX + 32];
1408
1409         /*
1410          * the def_thread is just for options, it's not a real job
1411          */
1412         if (td == &def_thread)
1413                 return 0;
1414
1415         init_flags(td);
1416
1417         /*
1418          * if we are just dumping the output command line, don't add the job
1419          */
1420         if (parse_dryrun()) {
1421                 put_job(td);
1422                 return 0;
1423         }
1424
1425         td->client_type = client_type;
1426
1427         if (profile_td_init(td))
1428                 goto err;
1429
1430         if (ioengine_load(td))
1431                 goto err;
1432
1433         file_alloced = 0;
1434         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1435                 file_alloced = 1;
1436
1437                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1438                         add_file(td, jobname, job_add_num, 0);
1439                 else {
1440                         for (i = 0; i < o->nr_files; i++)
1441                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1442                 }
1443         }
1444
1445         if (fixup_options(td))
1446                 goto err;
1447
1448         /*
1449          * Belongs to fixup_options, but o->name is not necessarily set as yet
1450          */
1451         if (!wait_for_ok(jobname, o))
1452                 goto err;
1453
1454         flow_init_job(td);
1455
1456         /*
1457          * IO engines only need this for option callbacks, and the address may
1458          * change in subprocesses.
1459          */
1460         if (td->eo)
1461                 *(struct thread_data **)td->eo = NULL;
1462
1463         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1464                 struct fio_file *f;
1465
1466                 for_each_file(td, f, i)
1467                         f->real_file_size = -1ULL;
1468         }
1469
1470         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1471
1472         td->ts.clat_percentiles = o->clat_percentiles;
1473         td->ts.lat_percentiles = o->lat_percentiles;
1474         td->ts.percentile_precision = o->percentile_precision;
1475         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1476         td->ts.sig_figs = o->sig_figs;
1477
1478         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1479                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1480                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1481                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1482                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1483                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1484         }
1485         td->ts.sync_stat.min_val = ULONG_MAX;
1486         td->ddir_seq_nr = o->ddir_seq_nr;
1487
1488         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1489                 prev_group_jobs = 0;
1490                 groupid++;
1491                 if (groupid == INT_MAX) {
1492                         log_err("fio: too many groups defined\n");
1493                         goto err;
1494                 }
1495         }
1496
1497         td->groupid = groupid;
1498         prev_group_jobs++;
1499
1500         if (setup_random_seeds(td)) {
1501                 td_verror(td, errno, "setup_random_seeds");
1502                 goto err;
1503         }
1504
1505         if (setup_rate(td))
1506                 goto err;
1507
1508         if (o->write_lat_log) {
1509                 struct log_params p = {
1510                         .td = td,
1511                         .avg_msec = o->log_avg_msec,
1512                         .hist_msec = o->log_hist_msec,
1513                         .hist_coarseness = o->log_hist_coarseness,
1514                         .log_type = IO_LOG_TYPE_LAT,
1515                         .log_offset = o->log_offset,
1516                         .log_gz = o->log_gz,
1517                         .log_gz_store = o->log_gz_store,
1518                 };
1519                 const char *pre = o->lat_log_file ? o->lat_log_file : o->name;
1520                 const char *suf;
1521
1522                 if (p.log_gz_store)
1523                         suf = "log.fz";
1524                 else
1525                         suf = "log";
1526
1527                 gen_log_name(logname, sizeof(logname), "lat", pre,
1528                                 td->thread_number, suf, o->per_job_logs);
1529                 setup_log(&td->lat_log, &p, logname);
1530
1531                 gen_log_name(logname, sizeof(logname), "slat", pre,
1532                                 td->thread_number, suf, o->per_job_logs);
1533                 setup_log(&td->slat_log, &p, logname);
1534
1535                 gen_log_name(logname, sizeof(logname), "clat", pre,
1536                                 td->thread_number, suf, o->per_job_logs);
1537                 setup_log(&td->clat_log, &p, logname);
1538         }
1539
1540         if (o->write_hist_log) {
1541                 struct log_params p = {
1542                         .td = td,
1543                         .avg_msec = o->log_avg_msec,
1544                         .hist_msec = o->log_hist_msec,
1545                         .hist_coarseness = o->log_hist_coarseness,
1546                         .log_type = IO_LOG_TYPE_HIST,
1547                         .log_offset = o->log_offset,
1548                         .log_gz = o->log_gz,
1549                         .log_gz_store = o->log_gz_store,
1550                 };
1551                 const char *pre = o->hist_log_file ? o->hist_log_file : o->name;
1552                 const char *suf;
1553
1554 #ifndef CONFIG_ZLIB
1555                 if (td->client_type) {
1556                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1557                         goto err;
1558                 }
1559 #endif
1560
1561                 if (p.log_gz_store)
1562                         suf = "log.fz";
1563                 else
1564                         suf = "log";
1565
1566                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1567                                 td->thread_number, suf, o->per_job_logs);
1568                 setup_log(&td->clat_hist_log, &p, logname);
1569         }
1570
1571         if (o->write_bw_log) {
1572                 struct log_params p = {
1573                         .td = td,
1574                         .avg_msec = o->log_avg_msec,
1575                         .hist_msec = o->log_hist_msec,
1576                         .hist_coarseness = o->log_hist_coarseness,
1577                         .log_type = IO_LOG_TYPE_BW,
1578                         .log_offset = o->log_offset,
1579                         .log_gz = o->log_gz,
1580                         .log_gz_store = o->log_gz_store,
1581                 };
1582                 const char *pre = o->bw_log_file ? o->bw_log_file : o->name;
1583                 const char *suf;
1584
1585                 if (fio_option_is_set(o, bw_avg_time))
1586                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1587                 else
1588                         o->bw_avg_time = p.avg_msec;
1589
1590                 p.hist_msec = o->log_hist_msec;
1591                 p.hist_coarseness = o->log_hist_coarseness;
1592
1593                 if (p.log_gz_store)
1594                         suf = "log.fz";
1595                 else
1596                         suf = "log";
1597
1598                 gen_log_name(logname, sizeof(logname), "bw", pre,
1599                                 td->thread_number, suf, o->per_job_logs);
1600                 setup_log(&td->bw_log, &p, logname);
1601         }
1602         if (o->write_iops_log) {
1603                 struct log_params p = {
1604                         .td = td,
1605                         .avg_msec = o->log_avg_msec,
1606                         .hist_msec = o->log_hist_msec,
1607                         .hist_coarseness = o->log_hist_coarseness,
1608                         .log_type = IO_LOG_TYPE_IOPS,
1609                         .log_offset = o->log_offset,
1610                         .log_gz = o->log_gz,
1611                         .log_gz_store = o->log_gz_store,
1612                 };
1613                 const char *pre = o->iops_log_file ? o->iops_log_file : o->name;
1614                 const char *suf;
1615
1616                 if (fio_option_is_set(o, iops_avg_time))
1617                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1618                 else
1619                         o->iops_avg_time = p.avg_msec;
1620
1621                 p.hist_msec = o->log_hist_msec;
1622                 p.hist_coarseness = o->log_hist_coarseness;
1623
1624                 if (p.log_gz_store)
1625                         suf = "log.fz";
1626                 else
1627                         suf = "log";
1628
1629                 gen_log_name(logname, sizeof(logname), "iops", pre,
1630                                 td->thread_number, suf, o->per_job_logs);
1631                 setup_log(&td->iops_log, &p, logname);
1632         }
1633
1634         if (!o->name)
1635                 o->name = strdup(jobname);
1636
1637         if (output_format & FIO_OUTPUT_NORMAL) {
1638                 if (!job_add_num) {
1639                         if (is_backend && !recursed)
1640                                 fio_server_send_add_job(td);
1641
1642                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1643                                 char *c1, *c2, *c3, *c4;
1644                                 char *c5 = NULL, *c6 = NULL;
1645                                 int i2p = is_power_of_2(o->kb_base);
1646
1647                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1648                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1649                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1650                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1651
1652                                 if (!o->bs_is_seq_rand) {
1653                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1654                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1655                                 }
1656
1657                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1658                                                         td->groupid,
1659                                                         ddir_str(o->td_ddir));
1660
1661                                 if (o->bs_is_seq_rand)
1662                                         log_info("bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1663                                                         c1, c2, c3, c4);
1664                                 else
1665                                         log_info("bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1666                                                         c1, c2, c3, c4, c5, c6);
1667
1668                                 log_info("ioengine=%s, iodepth=%u\n",
1669                                                 td->io_ops->name, o->iodepth);
1670
1671                                 free(c1);
1672                                 free(c2);
1673                                 free(c3);
1674                                 free(c4);
1675                                 free(c5);
1676                                 free(c6);
1677                         }
1678                 } else if (job_add_num == 1)
1679                         log_info("...\n");
1680         }
1681
1682         if (td_steadystate_init(td))
1683                 goto err;
1684
1685         /*
1686          * recurse add identical jobs, clear numjobs and stonewall options
1687          * as they don't apply to sub-jobs
1688          */
1689         numjobs = o->numjobs;
1690         while (--numjobs) {
1691                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1692
1693                 if (!td_new)
1694                         goto err;
1695
1696                 td_new->o.numjobs = 1;
1697                 td_new->o.stonewall = 0;
1698                 td_new->o.new_group = 0;
1699                 td_new->subjob_number = numjobs;
1700                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1701                 td_new->o.ss_limit = o->ss_limit;
1702
1703                 if (file_alloced) {
1704                         if (td_new->files) {
1705                                 struct fio_file *f;
1706                                 for_each_file(td_new, f, i) {
1707                                         if (f->file_name)
1708                                                 sfree(f->file_name);
1709                                         sfree(f);
1710                                 }
1711                                 free(td_new->files);
1712                                 td_new->files = NULL;
1713                         }
1714                         td_new->files_index = 0;
1715                         td_new->files_size = 0;
1716                         if (td_new->o.filename) {
1717                                 free(td_new->o.filename);
1718                                 td_new->o.filename = NULL;
1719                         }
1720                 }
1721
1722                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1723                         goto err;
1724         }
1725
1726         return 0;
1727 err:
1728         put_job(td);
1729         return -1;
1730 }
1731
1732 /*
1733  * Parse as if 'o' was a command line
1734  */
1735 void add_job_opts(const char **o, int client_type)
1736 {
1737         struct thread_data *td, *td_parent;
1738         int i, in_global = 1;
1739         char jobname[32];
1740
1741         i = 0;
1742         td_parent = td = NULL;
1743         while (o[i]) {
1744                 if (!strncmp(o[i], "name", 4)) {
1745                         in_global = 0;
1746                         if (td)
1747                                 add_job(td, jobname, 0, 0, client_type);
1748                         td = NULL;
1749                         sprintf(jobname, "%s", o[i] + 5);
1750                 }
1751                 if (in_global && !td_parent)
1752                         td_parent = get_new_job(true, &def_thread, false, jobname);
1753                 else if (!in_global && !td) {
1754                         if (!td_parent)
1755                                 td_parent = &def_thread;
1756                         td = get_new_job(false, td_parent, false, jobname);
1757                 }
1758                 if (in_global)
1759                         fio_options_parse(td_parent, (char **) &o[i], 1);
1760                 else
1761                         fio_options_parse(td, (char **) &o[i], 1);
1762                 i++;
1763         }
1764
1765         if (td)
1766                 add_job(td, jobname, 0, 0, client_type);
1767 }
1768
1769 static int skip_this_section(const char *name)
1770 {
1771         int i;
1772
1773         if (!nr_job_sections)
1774                 return 0;
1775         if (!strncmp(name, "global", 6))
1776                 return 0;
1777
1778         for (i = 0; i < nr_job_sections; i++)
1779                 if (!strcmp(job_sections[i], name))
1780                         return 0;
1781
1782         return 1;
1783 }
1784
1785 static int is_empty_or_comment(char *line)
1786 {
1787         unsigned int i;
1788
1789         for (i = 0; i < strlen(line); i++) {
1790                 if (line[i] == ';')
1791                         return 1;
1792                 if (line[i] == '#')
1793                         return 1;
1794                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1795                         return 0;
1796         }
1797
1798         return 1;
1799 }
1800
1801 /*
1802  * This is our [ini] type file parser.
1803  */
1804 static int __parse_jobs_ini(struct thread_data *td,
1805                 char *file, int is_buf, int stonewall_flag, int type,
1806                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1807 {
1808         bool global = false;
1809         char *string;
1810         FILE *f;
1811         char *p;
1812         int ret = 0, stonewall;
1813         int first_sect = 1;
1814         int skip_fgets = 0;
1815         int inside_skip = 0;
1816         char **opts;
1817         int i, alloc_opts, num_opts;
1818
1819         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1820         assert(td || !nested);
1821
1822         if (is_buf)
1823                 f = NULL;
1824         else {
1825                 if (!strcmp(file, "-"))
1826                         f = stdin;
1827                 else
1828                         f = fopen(file, "r");
1829
1830                 if (!f) {
1831                         int __err = errno;
1832
1833                         log_err("fio: unable to open '%s' job file\n", file);
1834                         if (td)
1835                                 td_verror(td, __err, "job file open");
1836                         return 1;
1837                 }
1838         }
1839
1840         string = malloc(4096);
1841
1842         /*
1843          * it's really 256 + small bit, 280 should suffice
1844          */
1845         if (!nested) {
1846                 name = malloc(280);
1847                 memset(name, 0, 280);
1848         }
1849
1850         opts = NULL;
1851         if (nested && popts) {
1852                 opts = *popts;
1853                 alloc_opts = *aopts;
1854                 num_opts = *nopts;
1855         }
1856
1857         if (!opts) {
1858                 alloc_opts = 8;
1859                 opts = malloc(sizeof(char *) * alloc_opts);
1860                 num_opts = 0;
1861         }
1862
1863         stonewall = stonewall_flag;
1864         do {
1865                 /*
1866                  * if skip_fgets is set, we already have loaded a line we
1867                  * haven't handled.
1868                  */
1869                 if (!skip_fgets) {
1870                         if (is_buf)
1871                                 p = strsep(&file, "\n");
1872                         else
1873                                 p = fgets(string, 4096, f);
1874                         if (!p)
1875                                 break;
1876                 }
1877
1878                 skip_fgets = 0;
1879                 strip_blank_front(&p);
1880                 strip_blank_end(p);
1881
1882                 dprint(FD_PARSE, "%s\n", p);
1883                 if (is_empty_or_comment(p))
1884                         continue;
1885
1886                 if (!nested) {
1887                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1888                                 if (inside_skip)
1889                                         continue;
1890
1891                                 log_err("fio: option <%s> outside of "
1892                                         "[] job section\n", p);
1893                                 ret = 1;
1894                                 break;
1895                         }
1896
1897                         name[strlen(name) - 1] = '\0';
1898
1899                         if (skip_this_section(name)) {
1900                                 inside_skip = 1;
1901                                 continue;
1902                         } else
1903                                 inside_skip = 0;
1904
1905                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1906
1907                         global = !strncmp(name, "global", 6);
1908
1909                         if (dump_cmdline) {
1910                                 if (first_sect)
1911                                         log_info("fio ");
1912                                 if (!global)
1913                                         log_info("--name=%s ", name);
1914                                 first_sect = 0;
1915                         }
1916
1917                         td = get_new_job(global, &def_thread, false, name);
1918                         if (!td) {
1919                                 ret = 1;
1920                                 break;
1921                         }
1922
1923                         /*
1924                          * Separate multiple job files by a stonewall
1925                          */
1926                         if (!global && stonewall) {
1927                                 td->o.stonewall = stonewall;
1928                                 stonewall = 0;
1929                         }
1930
1931                         num_opts = 0;
1932                         memset(opts, 0, alloc_opts * sizeof(char *));
1933                 }
1934                 else
1935                         skip_fgets = 1;
1936
1937                 while (1) {
1938                         if (!skip_fgets) {
1939                                 if (is_buf)
1940                                         p = strsep(&file, "\n");
1941                                 else
1942                                         p = fgets(string, 4096, f);
1943                                 if (!p)
1944                                         break;
1945                                 dprint(FD_PARSE, "%s", p);
1946                         }
1947                         else
1948                                 skip_fgets = 0;
1949
1950                         if (is_empty_or_comment(p))
1951                                 continue;
1952
1953                         strip_blank_front(&p);
1954
1955                         /*
1956                          * new section, break out and make sure we don't
1957                          * fgets() a new line at the top.
1958                          */
1959                         if (p[0] == '[') {
1960                                 if (nested) {
1961                                         log_err("No new sections in included files\n");
1962                                         return 1;
1963                                 }
1964
1965                                 skip_fgets = 1;
1966                                 break;
1967                         }
1968
1969                         strip_blank_end(p);
1970
1971                         if (!strncmp(p, "include", strlen("include"))) {
1972                                 char *filename = p + strlen("include") + 1,
1973                                         *ts, *full_fn = NULL;
1974
1975                                 /*
1976                                  * Allow for the include filename
1977                                  * specification to be relative.
1978                                  */
1979                                 if (access(filename, F_OK) &&
1980                                     (ts = strrchr(file, '/'))) {
1981                                         int len = ts - file +
1982                                                 strlen(filename) + 2;
1983
1984                                         if (!(full_fn = calloc(1, len))) {
1985                                                 ret = ENOMEM;
1986                                                 break;
1987                                         }
1988
1989                                         strncpy(full_fn,
1990                                                 file, (ts - file) + 1);
1991                                         strncpy(full_fn + (ts - file) + 1,
1992                                                 filename, strlen(filename));
1993                                         full_fn[len - 1] = 0;
1994                                         filename = full_fn;
1995                                 }
1996
1997                                 ret = __parse_jobs_ini(td, filename, is_buf,
1998                                                        stonewall_flag, type, 1,
1999                                                        name, &opts,
2000                                                        &alloc_opts, &num_opts);
2001
2002                                 if (ret) {
2003                                         log_err("Error %d while parsing "
2004                                                 "include file %s\n",
2005                                                 ret, filename);
2006                                 }
2007
2008                                 if (full_fn)
2009                                         free(full_fn);
2010
2011                                 if (ret)
2012                                         break;
2013
2014                                 continue;
2015                         }
2016
2017                         if (num_opts == alloc_opts) {
2018                                 alloc_opts <<= 1;
2019                                 opts = realloc(opts,
2020                                                 alloc_opts * sizeof(char *));
2021                         }
2022
2023                         opts[num_opts] = strdup(p);
2024                         num_opts++;
2025                 }
2026
2027                 if (nested) {
2028                         *popts = opts;
2029                         *aopts = alloc_opts;
2030                         *nopts = num_opts;
2031                         goto out;
2032                 }
2033
2034                 ret = fio_options_parse(td, opts, num_opts);
2035                 if (!ret) {
2036                         if (dump_cmdline)
2037                                 dump_opt_list(td);
2038
2039                         ret = add_job(td, name, 0, 0, type);
2040                 } else {
2041                         log_err("fio: job %s dropped\n", name);
2042                         put_job(td);
2043                 }
2044
2045                 for (i = 0; i < num_opts; i++)
2046                         free(opts[i]);
2047                 num_opts = 0;
2048         } while (!ret);
2049
2050         if (dump_cmdline)
2051                 log_info("\n");
2052
2053         i = 0;
2054         while (i < nr_job_sections) {
2055                 free(job_sections[i]);
2056                 i++;
2057         }
2058
2059         free(opts);
2060 out:
2061         free(string);
2062         if (!nested)
2063                 free(name);
2064         if (!is_buf && f != stdin)
2065                 fclose(f);
2066         return ret;
2067 }
2068
2069 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2070 {
2071         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2072                         0, NULL, NULL, NULL, NULL);
2073 }
2074
2075 static int fill_def_thread(void)
2076 {
2077         memset(&def_thread, 0, sizeof(def_thread));
2078         INIT_FLIST_HEAD(&def_thread.opt_list);
2079
2080         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2081         def_thread.o.error_dump = 1;
2082
2083         /*
2084          * fill default options
2085          */
2086         fio_fill_default_options(&def_thread);
2087         return 0;
2088 }
2089
2090 static void show_debug_categories(void)
2091 {
2092 #ifdef FIO_INC_DEBUG
2093         struct debug_level *dl = &debug_levels[0];
2094         int curlen, first = 1;
2095
2096         curlen = 0;
2097         while (dl->name) {
2098                 int has_next = (dl + 1)->name != NULL;
2099
2100                 if (first || curlen + strlen(dl->name) >= 80) {
2101                         if (!first) {
2102                                 printf("\n");
2103                                 curlen = 0;
2104                         }
2105                         curlen += printf("\t\t\t%s", dl->name);
2106                         curlen += 3 * (8 - 1);
2107                         if (has_next)
2108                                 curlen += printf(",");
2109                 } else {
2110                         curlen += printf("%s", dl->name);
2111                         if (has_next)
2112                                 curlen += printf(",");
2113                 }
2114                 dl++;
2115                 first = 0;
2116         }
2117         printf("\n");
2118 #endif
2119 }
2120
2121 /*
2122  * Following options aren't printed by usage().
2123  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2124  * --latency-log - Deprecated option.
2125  */
2126 static void usage(const char *name)
2127 {
2128         printf("%s\n", fio_version_string);
2129         printf("%s [options] [job options] <job file(s)>\n", name);
2130         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2131         show_debug_categories();
2132         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2133         printf("  --output\t\tWrite output to file\n");
2134         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2135         printf("  --minimal\t\tMinimal (terse) output\n");
2136         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2137         printf("  --terse-version=type\tSet terse version output format"
2138                 " (default 3, or 2 or 4)\n");
2139         printf("  --version\t\tPrint version info and exit\n");
2140         printf("  --help\t\tPrint this page\n");
2141         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2142         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2143         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2144                 " them\n");
2145         printf("  --enghelp=engine\tPrint ioengine help, or list"
2146                 " available ioengines\n");
2147         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2148                 " cmd\n");
2149         printf("  --showcmd\t\tTurn a job file into command line options\n");
2150         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2151         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2152         printf("  --eta-newline=time\tForce a new line for every 'time'");
2153         printf(" period passed\n");
2154         printf("  --status-interval=t\tForce full status dump every");
2155         printf(" 't' period passed\n");
2156         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2157                 " writes\n");
2158         printf("  --section=name\tOnly run specified section in job file,"
2159                 " multiple sections can be specified\n");
2160         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2161                 " (def 16384)\n");
2162         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2163         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2164         printf("  --server=args\t\tStart a backend fio server\n");
2165         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2166         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2167         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2168         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2169                 "\t\t\t(option=system,percpu) or run unit work\n"
2170                 "\t\t\tcalibration only (option=calibrate)\n");
2171 #ifdef CONFIG_ZLIB
2172         printf("  --inflate-log=log\tInflate and output compressed log\n");
2173 #endif
2174         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2175         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2176         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2177         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2178         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2179         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2180 }
2181
2182 #ifdef FIO_INC_DEBUG
2183 struct debug_level debug_levels[] = {
2184         { .name = "process",
2185           .help = "Process creation/exit logging",
2186           .shift = FD_PROCESS,
2187         },
2188         { .name = "file",
2189           .help = "File related action logging",
2190           .shift = FD_FILE,
2191         },
2192         { .name = "io",
2193           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2194           .shift = FD_IO,
2195         },
2196         { .name = "mem",
2197           .help = "Memory allocation/freeing logging",
2198           .shift = FD_MEM,
2199         },
2200         { .name = "blktrace",
2201           .help = "blktrace action logging",
2202           .shift = FD_BLKTRACE,
2203         },
2204         { .name = "verify",
2205           .help = "IO verification action logging",
2206           .shift = FD_VERIFY,
2207         },
2208         { .name = "random",
2209           .help = "Random generation logging",
2210           .shift = FD_RANDOM,
2211         },
2212         { .name = "parse",
2213           .help = "Parser logging",
2214           .shift = FD_PARSE,
2215         },
2216         { .name = "diskutil",
2217           .help = "Disk utility logging actions",
2218           .shift = FD_DISKUTIL,
2219         },
2220         { .name = "job",
2221           .help = "Logging related to creating/destroying jobs",
2222           .shift = FD_JOB,
2223         },
2224         { .name = "mutex",
2225           .help = "Mutex logging",
2226           .shift = FD_MUTEX
2227         },
2228         { .name = "profile",
2229           .help = "Logging related to profiles",
2230           .shift = FD_PROFILE,
2231         },
2232         { .name = "time",
2233           .help = "Logging related to time keeping functions",
2234           .shift = FD_TIME,
2235         },
2236         { .name = "net",
2237           .help = "Network logging",
2238           .shift = FD_NET,
2239         },
2240         { .name = "rate",
2241           .help = "Rate logging",
2242           .shift = FD_RATE,
2243         },
2244         { .name = "compress",
2245           .help = "Log compression logging",
2246           .shift = FD_COMPRESS,
2247         },
2248         { .name = "steadystate",
2249           .help = "Steady state detection logging",
2250           .shift = FD_STEADYSTATE,
2251         },
2252         { .name = "helperthread",
2253           .help = "Helper thread logging",
2254           .shift = FD_HELPERTHREAD,
2255         },
2256         { .name = NULL, },
2257 };
2258
2259 static int set_debug(const char *string)
2260 {
2261         struct debug_level *dl;
2262         char *p = (char *) string;
2263         char *opt;
2264         int i;
2265
2266         if (!string)
2267                 return 0;
2268
2269         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2270                 log_info("fio: dumping debug options:");
2271                 for (i = 0; debug_levels[i].name; i++) {
2272                         dl = &debug_levels[i];
2273                         log_info("%s,", dl->name);
2274                 }
2275                 log_info("all\n");
2276                 return 1;
2277         }
2278
2279         while ((opt = strsep(&p, ",")) != NULL) {
2280                 int found = 0;
2281
2282                 if (!strncmp(opt, "all", 3)) {
2283                         log_info("fio: set all debug options\n");
2284                         fio_debug = ~0UL;
2285                         continue;
2286                 }
2287
2288                 for (i = 0; debug_levels[i].name; i++) {
2289                         dl = &debug_levels[i];
2290                         found = !strncmp(opt, dl->name, strlen(dl->name));
2291                         if (!found)
2292                                 continue;
2293
2294                         if (dl->shift == FD_JOB) {
2295                                 opt = strchr(opt, ':');
2296                                 if (!opt) {
2297                                         log_err("fio: missing job number\n");
2298                                         break;
2299                                 }
2300                                 opt++;
2301                                 fio_debug_jobno = atoi(opt);
2302                                 log_info("fio: set debug jobno %d\n",
2303                                                         fio_debug_jobno);
2304                         } else {
2305                                 log_info("fio: set debug option %s\n", opt);
2306                                 fio_debug |= (1UL << dl->shift);
2307                         }
2308                         break;
2309                 }
2310
2311                 if (!found)
2312                         log_err("fio: debug mask %s not found\n", opt);
2313         }
2314         return 0;
2315 }
2316 #else
2317 static int set_debug(const char *string)
2318 {
2319         log_err("fio: debug tracing not included in build\n");
2320         return 1;
2321 }
2322 #endif
2323
2324 static void fio_options_fill_optstring(void)
2325 {
2326         char *ostr = cmd_optstr;
2327         int i, c;
2328
2329         c = i = 0;
2330         while (l_opts[i].name) {
2331                 ostr[c++] = l_opts[i].val;
2332                 if (l_opts[i].has_arg == required_argument)
2333                         ostr[c++] = ':';
2334                 else if (l_opts[i].has_arg == optional_argument) {
2335                         ostr[c++] = ':';
2336                         ostr[c++] = ':';
2337                 }
2338                 i++;
2339         }
2340         ostr[c] = '\0';
2341 }
2342
2343 static int client_flag_set(char c)
2344 {
2345         int i;
2346
2347         i = 0;
2348         while (l_opts[i].name) {
2349                 int val = l_opts[i].val;
2350
2351                 if (c == (val & 0xff))
2352                         return (val & FIO_CLIENT_FLAG);
2353
2354                 i++;
2355         }
2356
2357         return 0;
2358 }
2359
2360 static void parse_cmd_client(void *client, char *opt)
2361 {
2362         fio_client_add_cmd_option(client, opt);
2363 }
2364
2365 static void show_closest_option(const char *name)
2366 {
2367         int best_option, best_distance;
2368         int i, distance;
2369
2370         while (*name == '-')
2371                 name++;
2372
2373         best_option = -1;
2374         best_distance = INT_MAX;
2375         i = 0;
2376         while (l_opts[i].name) {
2377                 distance = string_distance(name, l_opts[i].name);
2378                 if (distance < best_distance) {
2379                         best_distance = distance;
2380                         best_option = i;
2381                 }
2382                 i++;
2383         }
2384
2385         if (best_option != -1 && string_distance_ok(name, best_distance))
2386                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2387 }
2388
2389 static int parse_output_format(const char *optarg)
2390 {
2391         char *p, *orig, *opt;
2392         int ret = 0;
2393
2394         p = orig = strdup(optarg);
2395
2396         output_format = 0;
2397
2398         while ((opt = strsep(&p, ",")) != NULL) {
2399                 if (!strcmp(opt, "minimal") ||
2400                     !strcmp(opt, "terse") ||
2401                     !strcmp(opt, "csv"))
2402                         output_format |= FIO_OUTPUT_TERSE;
2403                 else if (!strcmp(opt, "json"))
2404                         output_format |= FIO_OUTPUT_JSON;
2405                 else if (!strcmp(opt, "json+"))
2406                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2407                 else if (!strcmp(opt, "normal"))
2408                         output_format |= FIO_OUTPUT_NORMAL;
2409                 else {
2410                         log_err("fio: invalid output format %s\n", opt);
2411                         ret = 1;
2412                         break;
2413                 }
2414         }
2415
2416         free(orig);
2417         return ret;
2418 }
2419
2420 int parse_cmd_line(int argc, char *argv[], int client_type)
2421 {
2422         struct thread_data *td = NULL;
2423         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2424         char *ostr = cmd_optstr;
2425         char *pid_file = NULL;
2426         void *cur_client = NULL;
2427         int backend = 0;
2428
2429         /*
2430          * Reset optind handling, since we may call this multiple times
2431          * for the backend.
2432          */
2433         optind = 1;
2434
2435         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2436                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2437                         parse_cmd_client(cur_client, argv[optind - 1]);
2438                         c &= ~FIO_CLIENT_FLAG;
2439                 }
2440
2441                 switch (c) {
2442                 case 'a':
2443                         smalloc_pool_size = atoi(optarg);
2444                         smalloc_pool_size <<= 10;
2445                         sinit();
2446                         break;
2447                 case 'l':
2448                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2449                         do_exit++;
2450                         exit_val = 1;
2451                         break;
2452                 case 'b':
2453                         write_bw_log = 1;
2454                         break;
2455                 case 'o': {
2456                         FILE *tmp;
2457
2458                         if (f_out && f_out != stdout)
2459                                 fclose(f_out);
2460
2461                         tmp = fopen(optarg, "w+");
2462                         if (!tmp) {
2463                                 log_err("fio: output file open error: %s\n", strerror(errno));
2464                                 exit_val = 1;
2465                                 do_exit++;
2466                                 break;
2467                         }
2468                         f_err = f_out = tmp;
2469                         break;
2470                         }
2471                 case 'm':
2472                         output_format = FIO_OUTPUT_TERSE;
2473                         break;
2474                 case 'F':
2475                         if (parse_output_format(optarg)) {
2476                                 log_err("fio: failed parsing output-format\n");
2477                                 exit_val = 1;
2478                                 do_exit++;
2479                                 break;
2480                         }
2481                         break;
2482                 case 'f':
2483                         output_format |= FIO_OUTPUT_TERSE;
2484                         break;
2485                 case 'h':
2486                         did_arg = true;
2487                         if (!cur_client) {
2488                                 usage(argv[0]);
2489                                 do_exit++;
2490                         }
2491                         break;
2492                 case 'c':
2493                         did_arg = true;
2494                         if (!cur_client) {
2495                                 fio_show_option_help(optarg);
2496                                 do_exit++;
2497                         }
2498                         break;
2499                 case 'i':
2500                         did_arg = true;
2501                         if (!cur_client) {
2502                                 fio_show_ioengine_help(optarg);
2503                                 do_exit++;
2504                         }
2505                         break;
2506                 case 's':
2507                         did_arg = true;
2508                         dump_cmdline = 1;
2509                         break;
2510                 case 'r':
2511                         read_only = 1;
2512                         break;
2513                 case 'v':
2514                         did_arg = true;
2515                         if (!cur_client) {
2516                                 log_info("%s\n", fio_version_string);
2517                                 do_exit++;
2518                         }
2519                         break;
2520                 case 'V':
2521                         terse_version = atoi(optarg);
2522                         if (!(terse_version >= 2 && terse_version <= 5)) {
2523                                 log_err("fio: bad terse version format\n");
2524                                 exit_val = 1;
2525                                 do_exit++;
2526                         }
2527                         break;
2528                 case 'e':
2529                         if (!strcmp("always", optarg))
2530                                 eta_print = FIO_ETA_ALWAYS;
2531                         else if (!strcmp("never", optarg))
2532                                 eta_print = FIO_ETA_NEVER;
2533                         break;
2534                 case 'E': {
2535                         long long t = 0;
2536
2537                         if (check_str_time(optarg, &t, 1)) {
2538                                 log_err("fio: failed parsing eta time %s\n", optarg);
2539                                 exit_val = 1;
2540                                 do_exit++;
2541                                 break;
2542                         }
2543                         eta_new_line = t / 1000;
2544                         if (!eta_new_line) {
2545                                 log_err("fio: eta new line time too short\n");
2546                                 exit_val = 1;
2547                                 do_exit++;
2548                         }
2549                         break;
2550                         }
2551                 case 'O': {
2552                         long long t = 0;
2553
2554                         if (check_str_time(optarg, &t, 1)) {
2555                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2556                                 exit_val = 1;
2557                                 do_exit++;
2558                                 break;
2559                         }
2560                         eta_interval_msec = t / 1000;
2561                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2562                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2563                                 exit_val = 1;
2564                                 do_exit++;
2565                         }
2566                         break;
2567                         }
2568                 case 'd':
2569                         if (set_debug(optarg))
2570                                 do_exit++;
2571                         break;
2572                 case 'P':
2573                         did_arg = true;
2574                         parse_only = 1;
2575                         break;
2576                 case 'x': {
2577                         size_t new_size;
2578
2579                         if (!strcmp(optarg, "global")) {
2580                                 log_err("fio: can't use global as only "
2581                                         "section\n");
2582                                 do_exit++;
2583                                 exit_val = 1;
2584                                 break;
2585                         }
2586                         new_size = (nr_job_sections + 1) * sizeof(char *);
2587                         job_sections = realloc(job_sections, new_size);
2588                         job_sections[nr_job_sections] = strdup(optarg);
2589                         nr_job_sections++;
2590                         break;
2591                         }
2592 #ifdef CONFIG_ZLIB
2593                 case 'X':
2594                         exit_val = iolog_file_inflate(optarg);
2595                         did_arg = true;
2596                         do_exit++;
2597                         break;
2598 #endif
2599                 case 'p':
2600                         did_arg = true;
2601                         if (exec_profile)
2602                                 free(exec_profile);
2603                         exec_profile = strdup(optarg);
2604                         break;
2605                 case FIO_GETOPT_JOB: {
2606                         const char *opt = l_opts[lidx].name;
2607                         char *val = optarg;
2608
2609                         if (!strncmp(opt, "name", 4) && td) {
2610                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2611                                 if (ret)
2612                                         goto out_free;
2613                                 td = NULL;
2614                                 did_arg = true;
2615                         }
2616                         if (!td) {
2617                                 int is_section = !strncmp(opt, "name", 4);
2618                                 int global = 0;
2619
2620                                 if (!is_section || !strncmp(val, "global", 6))
2621                                         global = 1;
2622
2623                                 if (is_section && skip_this_section(val))
2624                                         continue;
2625
2626                                 td = get_new_job(global, &def_thread, true, NULL);
2627                                 if (!td || ioengine_load(td)) {
2628                                         if (td) {
2629                                                 put_job(td);
2630                                                 td = NULL;
2631                                         }
2632                                         do_exit++;
2633                                         exit_val = 1;
2634                                         break;
2635                                 }
2636                                 fio_options_set_ioengine_opts(l_opts, td);
2637                         }
2638
2639                         if ((!val || !strlen(val)) &&
2640                             l_opts[lidx].has_arg == required_argument) {
2641                                 log_err("fio: option %s requires an argument\n", opt);
2642                                 ret = 1;
2643                         } else
2644                                 ret = fio_cmd_option_parse(td, opt, val);
2645
2646                         if (ret) {
2647                                 if (td) {
2648                                         put_job(td);
2649                                         td = NULL;
2650                                 }
2651                                 do_exit++;
2652                                 exit_val = 1;
2653                         }
2654
2655                         if (!ret && !strcmp(opt, "ioengine")) {
2656                                 if (ioengine_load(td)) {
2657                                         put_job(td);
2658                                         td = NULL;
2659                                         do_exit++;
2660                                         exit_val = 1;
2661                                         break;
2662                                 }
2663                                 fio_options_set_ioengine_opts(l_opts, td);
2664                         }
2665                         break;
2666                 }
2667                 case FIO_GETOPT_IOENGINE: {
2668                         const char *opt = l_opts[lidx].name;
2669                         char *val = optarg;
2670
2671                         if (!td)
2672                                 break;
2673
2674                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2675                         break;
2676                 }
2677                 case 'w':
2678                         warnings_fatal = 1;
2679                         break;
2680                 case 'j':
2681                         max_jobs = atoi(optarg);
2682                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2683                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2684                                 do_exit++;
2685                                 exit_val = 1;
2686                         }
2687                         break;
2688                 case 'S':
2689                         did_arg = true;
2690 #ifndef CONFIG_NO_SHM
2691                         if (nr_clients) {
2692                                 log_err("fio: can't be both client and server\n");
2693                                 do_exit++;
2694                                 exit_val = 1;
2695                                 break;
2696                         }
2697                         if (optarg)
2698                                 fio_server_set_arg(optarg);
2699                         is_backend = 1;
2700                         backend = 1;
2701 #else
2702                         log_err("fio: client/server requires SHM support\n");
2703                         do_exit++;
2704                         exit_val = 1;
2705 #endif
2706                         break;
2707                 case 'D':
2708                         if (pid_file)
2709                                 free(pid_file);
2710                         pid_file = strdup(optarg);
2711                         break;
2712                 case 'I':
2713                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2714                                 /* exit on error and calibration only */
2715                                 did_arg = true;
2716                                 do_exit++;
2717                                 if (ret == -1)
2718                                         exit_val = 1;
2719                         }
2720                         break;
2721                 case 'C':
2722                         did_arg = true;
2723                         if (is_backend) {
2724                                 log_err("fio: can't be both client and server\n");
2725                                 do_exit++;
2726                                 exit_val = 1;
2727                                 break;
2728                         }
2729                         /* if --client parameter contains a pathname */
2730                         if (0 == access(optarg, R_OK)) {
2731                                 /* file contains a list of host addrs or names */
2732                                 char hostaddr[PATH_MAX] = {0};
2733                                 char formatstr[8];
2734                                 FILE * hostf = fopen(optarg, "r");
2735                                 if (!hostf) {
2736                                         log_err("fio: could not open client list file %s for read\n", optarg);
2737                                         do_exit++;
2738                                         exit_val = 1;
2739                                         break;
2740                                 }
2741                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2742                                 /*
2743                                  * read at most PATH_MAX-1 chars from each
2744                                  * record in this file
2745                                  */
2746                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2747                                         /* expect EVERY host in file to be valid */
2748                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2749                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2750                                                 do_exit++;
2751                                                 exit_val = 1;
2752                                                 break;
2753                                         }
2754                                 }
2755                                 fclose(hostf);
2756                                 break; /* no possibility of job file for "this client only" */
2757                         }
2758                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2759                                 log_err("fio: failed adding client %s\n", optarg);
2760                                 do_exit++;
2761                                 exit_val = 1;
2762                                 break;
2763                         }
2764                         /*
2765                          * If the next argument exists and isn't an option,
2766                          * assume it's a job file for this client only.
2767                          */
2768                         while (optind < argc) {
2769                                 if (!strncmp(argv[optind], "--", 2) ||
2770                                     !strncmp(argv[optind], "-", 1))
2771                                         break;
2772
2773                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2774                                         break;
2775                                 optind++;
2776                         }
2777                         break;
2778                 case 'R':
2779                         did_arg = true;
2780                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2781                                 do_exit++;
2782                                 exit_val = 1;
2783                         }
2784                         break;
2785                 case 'T':
2786                         did_arg = true;
2787                         do_exit++;
2788                         exit_val = fio_monotonic_clocktest(1);
2789                         break;
2790                 case 'G':
2791                         did_arg = true;
2792                         do_exit++;
2793                         exit_val = fio_crctest(optarg);
2794                         break;
2795                 case 'M':
2796                         did_arg = true;
2797                         do_exit++;
2798                         exit_val = fio_memcpy_test(optarg);
2799                         break;
2800                 case 'L': {
2801                         long long val;
2802
2803                         if (check_str_time(optarg, &val, 1)) {
2804                                 log_err("fio: failed parsing time %s\n", optarg);
2805                                 do_exit++;
2806                                 exit_val = 1;
2807                                 break;
2808                         }
2809                         if (val < 1000) {
2810                                 log_err("fio: status interval too small\n");
2811                                 do_exit++;
2812                                 exit_val = 1;
2813                         }
2814                         status_interval = val / 1000;
2815                         break;
2816                         }
2817                 case 'W':
2818                         if (trigger_file)
2819                                 free(trigger_file);
2820                         trigger_file = strdup(optarg);
2821                         break;
2822                 case 'H':
2823                         if (trigger_cmd)
2824                                 free(trigger_cmd);
2825                         trigger_cmd = strdup(optarg);
2826                         break;
2827                 case 'J':
2828                         if (trigger_remote_cmd)
2829                                 free(trigger_remote_cmd);
2830                         trigger_remote_cmd = strdup(optarg);
2831                         break;
2832                 case 'K':
2833                         if (aux_path)
2834                                 free(aux_path);
2835                         aux_path = strdup(optarg);
2836                         break;
2837                 case 'B':
2838                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2839                                 log_err("fio: failed parsing time %s\n", optarg);
2840                                 do_exit++;
2841                                 exit_val = 1;
2842                         }
2843                         trigger_timeout /= 1000000;
2844                         break;
2845                 case '?':
2846                         log_err("%s: unrecognized option '%s'\n", argv[0],
2847                                                         argv[optind - 1]);
2848                         show_closest_option(argv[optind - 1]);
2849                 default:
2850                         do_exit++;
2851                         exit_val = 1;
2852                         break;
2853                 }
2854                 if (do_exit)
2855                         break;
2856         }
2857
2858         if (do_exit && !(is_backend || nr_clients))
2859                 exit(exit_val);
2860
2861         if (nr_clients && fio_clients_connect())
2862                 exit(1);
2863
2864         if (is_backend && backend)
2865                 return fio_start_server(pid_file);
2866         else if (pid_file)
2867                 free(pid_file);
2868
2869         if (td) {
2870                 if (!ret) {
2871                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2872                         if (ret)
2873                                 exit(1);
2874                 }
2875         }
2876
2877         while (!ret && optind < argc) {
2878                 ini_idx++;
2879                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2880                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2881                 optind++;
2882         }
2883
2884 out_free:
2885         return ini_idx;
2886 }
2887
2888 int fio_init_options(void)
2889 {
2890         f_out = stdout;
2891         f_err = stderr;
2892
2893         fio_options_fill_optstring();
2894         fio_options_dup_and_init(l_opts);
2895
2896         atexit(free_shm);
2897
2898         if (fill_def_thread())
2899                 return 1;
2900
2901         return 0;
2902 }
2903
2904 extern int fio_check_options(struct thread_options *);
2905
2906 int parse_options(int argc, char *argv[])
2907 {
2908         const int type = FIO_CLIENT_TYPE_CLI;
2909         int job_files, i;
2910
2911         if (fio_init_options())
2912                 return 1;
2913         if (fio_test_cconv(&def_thread.o))
2914                 log_err("fio: failed internal cconv test\n");
2915
2916         job_files = parse_cmd_line(argc, argv, type);
2917
2918         if (job_files > 0) {
2919                 for (i = 0; i < job_files; i++) {
2920                         if (i && fill_def_thread())
2921                                 return 1;
2922                         if (nr_clients) {
2923                                 if (fio_clients_send_ini(ini_file[i]))
2924                                         return 1;
2925                                 free(ini_file[i]);
2926                         } else if (!is_backend) {
2927                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2928                                         return 1;
2929                                 free(ini_file[i]);
2930                         }
2931                 }
2932         } else if (nr_clients) {
2933                 if (fill_def_thread())
2934                         return 1;
2935                 if (fio_clients_send_ini(NULL))
2936                         return 1;
2937         }
2938
2939         free(ini_file);
2940         fio_options_free(&def_thread);
2941         filesetup_mem_free();
2942
2943         if (!thread_number) {
2944                 if (parse_dryrun())
2945                         return 0;
2946                 if (exec_profile)
2947                         return 0;
2948                 if (is_backend || nr_clients)
2949                         return 0;
2950                 if (did_arg)
2951                         return 0;
2952
2953                 log_err("No job(s) defined\n\n");
2954                 usage(argv[0]);
2955                 return 1;
2956         }
2957
2958         if (output_format & FIO_OUTPUT_NORMAL)
2959                 log_info("%s\n", fio_version_string);
2960
2961         return 0;
2962 }
2963
2964 void options_default_fill(struct thread_options *o)
2965 {
2966         memcpy(o, &def_thread.o, sizeof(*o));
2967 }
2968
2969 struct thread_data *get_global_options(void)
2970 {
2971         return &def_thread;
2972 }