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 or both min and max
 806                  * write size
 807                  */
 808                 if (o->verify_interval % o->min_bs[DDIR_WRITE] ||
 809                     o->verify_interval % o->max_bs[DDIR_WRITE])
 810                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 811                                                         o->max_bs[DDIR_WRITE]);
 812         }
 813
 814         if (o->pre_read) {
 815                 if (o->invalidate_cache)
 816                         o->invalidate_cache = 0;
 817                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 818                         log_info("fio: cannot pre-read files with an IO engine"
 819                                  " that isn't seekable. Pre-read disabled.\n");
 820                         ret = warnings_fatal;
 821                 }
 822         }
 823
 824         if (!o->unit_base) {
 825                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 826                         o->unit_base = 1;
 827                 else
 828                         o->unit_base = 8;
 829         }
 830
 831 #ifndef FIO_HAVE_ANY_FALLOCATE
 832         /* Platform doesn't support any fallocate so force it to none */
 833         o->fallocate_mode = FIO_FALLOCATE_NONE;
 834 #endif
 835
 836 #ifndef CONFIG_FDATASYNC
 837         if (o->fdatasync_blocks) {
 838                 log_info("fio: this platform does not support fdatasync()"
 839                          " falling back to using fsync().  Use the 'fsync'"
 840                          " option instead of 'fdatasync' to get rid of"
 841                          " this warning\n");
 842                 o->fsync_blocks = o->fdatasync_blocks;
 843                 o->fdatasync_blocks = 0;
 844                 ret = warnings_fatal;
 845         }
 846 #endif
 847
 848 #ifdef WIN32
 849         /*
 850          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 851          * so fail if we're passed those flags
 852          */
 853         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 854                 log_err("fio: Windows does not support direct or non-buffered io with"
 855                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 856                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 857                 ret = 1;
 858         }
 859 #endif
 860
 861         /*
 862          * For fully compressible data, just zero them at init time.
 863          * It's faster than repeatedly filling it. For non-zero
 864          * compression, we should have refill_buffers set. Set it, unless
 865          * the job file already changed it.
 866          */
 867         if (o->compress_percentage) {
 868                 if (o->compress_percentage == 100) {
 869                         o->zero_buffers = 1;
 870                         o->compress_percentage = 0;
 871                 } else if (!fio_option_is_set(o, refill_buffers)) {
 872                         o->refill_buffers = 1;
 873                         td->flags |= TD_F_REFILL_BUFFERS;
 874                 }
 875         }
 876
 877         /*
 878          * Using a non-uniform random distribution excludes usage of
 879          * a random map
 880          */
 881         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 882                 o->norandommap = 1;
 883
 884         /*
 885          * If size is set but less than the min block size, complain
 886          */
 887         if (o->size && o->size < td_min_bs(td)) {
 888                 log_err("fio: size too small, must not be less than minimum block size: %llu < %u\n",
 889                         (unsigned long long) o->size, td_min_bs(td));
 890                 ret = 1;
 891         }
 892
 893         /*
 894          * O_ATOMIC implies O_DIRECT
 895          */
 896         if (o->oatomic)
 897                 o->odirect = 1;
 898
 899         /*
 900          * If randseed is set, that overrides randrepeat
 901          */
 902         if (fio_option_is_set(o, rand_seed))
 903                 o->rand_repeatable = 0;
 904
 905         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 906                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 907                 ret = 1;
 908         }
 909
 910         if (fio_option_is_set(o, gtod_cpu)) {
 911                 fio_gtod_init();
 912                 fio_gtod_set_cpu(o->gtod_cpu);
 913                 fio_gtod_offload = 1;
 914         }
 915
 916         td->loops = o->loops;
 917         if (!td->loops)
 918                 td->loops = 1;
 919
 920         if (o->block_error_hist && o->nr_files != 1) {
 921                 log_err("fio: block error histogram only available "
 922                         "with a single file per job, but %d files "
 923                         "provided\n", o->nr_files);
 924                 ret = 1;
 925         }
 926
 927         if (fio_option_is_set(o, clat_percentiles) &&
 928             !fio_option_is_set(o, lat_percentiles)) {
 929                 o->lat_percentiles = !o->clat_percentiles;
 930         } else if (fio_option_is_set(o, lat_percentiles) &&
 931                    !fio_option_is_set(o, clat_percentiles)) {
 932                 o->clat_percentiles = !o->lat_percentiles;
 933         } else if (fio_option_is_set(o, lat_percentiles) &&
 934                    fio_option_is_set(o, clat_percentiles) &&
 935                    o->lat_percentiles && o->clat_percentiles) {
 936                 log_err("fio: lat_percentiles and clat_percentiles are "
 937                         "mutually exclusive\n");
 938                 ret = 1;
 939         }
 940
 941         /*
 942          * Fix these up to be nsec internally
 943          */
 944         o->max_latency *= 1000ULL;
 945         o->latency_target *= 1000ULL;
 946         o->latency_window *= 1000ULL;
 947
 948         return ret;
 949 }
 950
 951 static void init_rand_file_service(struct thread_data *td)
 952 {
 953         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 954         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 955
 956         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 957                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 958                 zipf_disable_hash(&td->next_file_zipf);
 959         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 960                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 961                 zipf_disable_hash(&td->next_file_zipf);
 962         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 963                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 964                 gauss_disable_hash(&td->next_file_gauss);
 965         }
 966 }
 967
 968 void td_fill_verify_state_seed(struct thread_data *td)
 969 {
 970         bool use64;
 971
 972         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 973                 use64 = true;
 974         else
 975                 use64 = false;
 976
 977         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
 978                 use64);
 979 }
 980
 981 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
 982 {
 983         int i;
 984
 985         /*
 986          * trimwrite is special in that we need to generate the same
 987          * offsets to get the "write after trim" effect. If we are
 988          * using bssplit to set buffer length distributions, ensure that
 989          * we seed the trim and write generators identically.
 990          */
 991         if (td_trimwrite(td)) {
 992                 init_rand_seed(&td->bsrange_state[DDIR_READ], td->rand_seeds[FIO_RAND_BS_OFF], use64);
 993                 init_rand_seed(&td->bsrange_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
 994                 init_rand_seed(&td->bsrange_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
 995         } else {
 996                 init_rand_seed(&td->bsrange_state[DDIR_READ], td->rand_seeds[FIO_RAND_BS_OFF], use64);
 997                 init_rand_seed(&td->bsrange_state[DDIR_WRITE], td->rand_seeds[FIO_RAND_BS1_OFF], use64);
 998                 init_rand_seed(&td->bsrange_state[DDIR_TRIM], td->rand_seeds[FIO_RAND_BS2_OFF], use64);
 999         }
1000
1001         td_fill_verify_state_seed(td);
1002         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1003
1004         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1005                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1006         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1007                 init_rand_file_service(td);
1008
1009         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1010         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1011         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1012         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1013         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1014         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1015         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1016         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1017
1018         if (!td_random(td))
1019                 return;
1020
1021         if (td->o.rand_repeatable)
1022                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1023
1024         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1025
1026         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1027                 struct frand_state *s = &td->seq_rand_state[i];
1028
1029                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1030         }
1031 }
1032
1033 void td_fill_rand_seeds(struct thread_data *td)
1034 {
1035         bool use64;
1036
1037         if (td->o.allrand_repeatable) {
1038                 unsigned int i;
1039
1040                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1041                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1042                                 + i;
1043         }
1044
1045         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1046                 use64 = true;
1047         else
1048                 use64 = false;
1049
1050         td_fill_rand_seeds_internal(td, use64);
1051
1052         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1053         frand_copy(&td->buf_state_prev, &td->buf_state);
1054 }
1055
1056 /*
1057  * Initializes the ioengine configured for a job, if it has not been done so
1058  * already.
1059  */
1060 int ioengine_load(struct thread_data *td)
1061 {
1062         if (!td->o.ioengine) {
1063                 log_err("fio: internal fault, no IO engine specified\n");
1064                 return 1;
1065         }
1066
1067         if (td->io_ops) {
1068                 struct ioengine_ops *ops;
1069                 void *dlhandle;
1070
1071                 /* An engine is loaded, but the requested ioengine
1072                  * may have changed.
1073                  */
1074                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1075                         /* The right engine is already loaded */
1076                         return 0;
1077                 }
1078
1079                 /*
1080                  * Name of file and engine may be different, load ops
1081                  * for this name and see if they match. If they do, then
1082                  * the engine is unchanged.
1083                  */
1084                 dlhandle = td->io_ops_dlhandle;
1085                 ops = load_ioengine(td);
1086                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle)
1087                         return 0;
1088
1089                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1090                         dlclose(dlhandle);
1091
1092                 /* Unload the old engine. */
1093                 free_ioengine(td);
1094         }
1095
1096         td->io_ops = load_ioengine(td);
1097         if (!td->io_ops) {
1098                 log_err("fio: failed to load engine\n");
1099                 return 1;
1100         }
1101
1102         if (td->io_ops->option_struct_size && td->io_ops->options) {
1103                 /*
1104                  * In cases where td->eo is set, clone it for a child thread.
1105                  * This requires that the parent thread has the same ioengine,
1106                  * but that requirement must be enforced by the code which
1107                  * cloned the thread.
1108                  */
1109                 void *origeo = td->eo;
1110                 /*
1111                  * Otherwise use the default thread options.
1112                  */
1113                 if (!origeo && td != &def_thread && def_thread.eo &&
1114                     def_thread.io_ops->options == td->io_ops->options)
1115                         origeo = def_thread.eo;
1116
1117                 options_init(td->io_ops->options);
1118                 td->eo = malloc(td->io_ops->option_struct_size);
1119                 /*
1120                  * Use the default thread as an option template if this uses the
1121                  * same options structure and there are non-default options
1122                  * used.
1123                  */
1124                 if (origeo) {
1125                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1126                         options_mem_dupe(td->io_ops->options, td->eo);
1127                 } else {
1128                         memset(td->eo, 0, td->io_ops->option_struct_size);
1129                         fill_default_options(td->eo, td->io_ops->options);
1130                 }
1131                 *(struct thread_data **)td->eo = td;
1132         }
1133
1134         if (td->o.odirect)
1135                 td->io_ops->flags |= FIO_RAWIO;
1136
1137         td_set_ioengine_flags(td);
1138         return 0;
1139 }
1140
1141 static void init_flags(struct thread_data *td)
1142 {
1143         struct thread_options *o = &td->o;
1144         int i;
1145
1146         if (o->verify_backlog)
1147                 td->flags |= TD_F_VER_BACKLOG;
1148         if (o->trim_backlog)
1149                 td->flags |= TD_F_TRIM_BACKLOG;
1150         if (o->read_iolog_file)
1151                 td->flags |= TD_F_READ_IOLOG;
1152         if (o->refill_buffers)
1153                 td->flags |= TD_F_REFILL_BUFFERS;
1154         /*
1155          * Always scramble buffers if asked to
1156          */
1157         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1158                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1159         /*
1160          * But also scramble buffers, unless we were explicitly asked
1161          * to zero them.
1162          */
1163         if (o->scramble_buffers && !(o->zero_buffers &&
1164             fio_option_is_set(o, zero_buffers)))
1165                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1166         if (o->verify != VERIFY_NONE)
1167                 td->flags |= TD_F_VER_NONE;
1168
1169         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1170                 td->flags |= TD_F_NEED_LOCK;
1171
1172         if (o->mem_type == MEM_CUDA_MALLOC)
1173                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1174
1175         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1176                 if (option_check_rate(td, i)) {
1177                         td->flags |= TD_F_CHECK_RATE;
1178                         break;
1179                 }
1180         }
1181 }
1182
1183 static int setup_random_seeds(struct thread_data *td)
1184 {
1185         unsigned long seed;
1186         unsigned int i;
1187
1188         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1189                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1190                 if (!ret)
1191                         td_fill_rand_seeds(td);
1192                 return ret;
1193         }
1194
1195         seed = td->o.rand_seed;
1196         for (i = 0; i < 4; i++)
1197                 seed *= 0x9e370001UL;
1198
1199         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1200                 td->rand_seeds[i] = seed * td->thread_number + i;
1201                 seed *= 0x9e370001UL;
1202         }
1203
1204         td_fill_rand_seeds(td);
1205         return 0;
1206 }
1207
1208 enum {
1209         FPRE_NONE = 0,
1210         FPRE_JOBNAME,
1211         FPRE_JOBNUM,
1212         FPRE_FILENUM
1213 };
1214
1215 static struct fpre_keyword {
1216         const char *keyword;
1217         size_t strlen;
1218         int key;
1219 } fpre_keywords[] = {
1220         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1221         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1222         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1223         { .keyword = NULL, },
1224         };
1225
1226 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1227                            const char *jobname, int jobnum, int filenum)
1228 {
1229         struct fpre_keyword *f;
1230         char copy[PATH_MAX];
1231         size_t dst_left = PATH_MAX - 1;
1232
1233         if (!o->filename_format || !strlen(o->filename_format)) {
1234                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1235                 return buf;
1236         }
1237
1238         for (f = &fpre_keywords[0]; f->keyword; f++)
1239                 f->strlen = strlen(f->keyword);
1240
1241         buf[buf_size - 1] = '\0';
1242         strncpy(buf, o->filename_format, buf_size - 1);
1243
1244         memset(copy, 0, sizeof(copy));
1245         for (f = &fpre_keywords[0]; f->keyword; f++) {
1246                 do {
1247                         size_t pre_len, post_start = 0;
1248                         char *str, *dst = copy;
1249
1250                         str = strcasestr(buf, f->keyword);
1251                         if (!str)
1252                                 break;
1253
1254                         pre_len = str - buf;
1255                         if (strlen(str) != f->strlen)
1256                                 post_start = pre_len + f->strlen;
1257
1258                         if (pre_len) {
1259                                 strncpy(dst, buf, pre_len);
1260                                 dst += pre_len;
1261                                 dst_left -= pre_len;
1262                         }
1263
1264                         switch (f->key) {
1265                         case FPRE_JOBNAME: {
1266                                 int ret;
1267
1268                                 ret = snprintf(dst, dst_left, "%s", jobname);
1269                                 if (ret < 0)
1270                                         break;
1271                                 else if (ret > dst_left) {
1272                                         log_err("fio: truncated filename\n");
1273                                         dst += dst_left;
1274                                         dst_left = 0;
1275                                 } else {
1276                                         dst += ret;
1277                                         dst_left -= ret;
1278                                 }
1279                                 break;
1280                                 }
1281                         case FPRE_JOBNUM: {
1282                                 int ret;
1283
1284                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1285                                 if (ret < 0)
1286                                         break;
1287                                 else if (ret > dst_left) {
1288                                         log_err("fio: truncated filename\n");
1289                                         dst += dst_left;
1290                                         dst_left = 0;
1291                                 } else {
1292                                         dst += ret;
1293                                         dst_left -= ret;
1294                                 }
1295                                 break;
1296                                 }
1297                         case FPRE_FILENUM: {
1298                                 int ret;
1299
1300                                 ret = snprintf(dst, dst_left, "%d", filenum);
1301                                 if (ret < 0)
1302                                         break;
1303                                 else if (ret > dst_left) {
1304                                         log_err("fio: truncated filename\n");
1305                                         dst += dst_left;
1306                                         dst_left = 0;
1307                                 } else {
1308                                         dst += ret;
1309                                         dst_left -= ret;
1310                                 }
1311                                 break;
1312                                 }
1313                         default:
1314                                 assert(0);
1315                                 break;
1316                         }
1317
1318                         if (post_start)
1319                                 strncpy(dst, buf + post_start, dst_left);
1320
1321                         strncpy(buf, copy, buf_size - 1);
1322                 } while (1);
1323         }
1324
1325         return buf;
1326 }
1327
1328 bool parse_dryrun(void)
1329 {
1330         return dump_cmdline || parse_only;
1331 }
1332
1333 static void gen_log_name(char *name, size_t size, const char *logtype,
1334                          const char *logname, unsigned int num,
1335                          const char *suf, int per_job)
1336 {
1337         if (per_job)
1338                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1339         else
1340                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1341 }
1342
1343 static int check_waitees(char *waitee)
1344 {
1345         struct thread_data *td;
1346         int i, ret = 0;
1347
1348         for_each_td(td, i) {
1349                 if (td->subjob_number)
1350                         continue;
1351
1352                 ret += !strcmp(td->o.name, waitee);
1353         }
1354
1355         return ret;
1356 }
1357
1358 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1359 {
1360         int nw;
1361
1362         if (!o->wait_for)
1363                 return true;
1364
1365         if (!strcmp(jobname, o->wait_for)) {
1366                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1367                                 jobname, o->wait_for);
1368                 return false;
1369         }
1370
1371         if (!(nw = check_waitees(o->wait_for))) {
1372                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1373                 return false;
1374         }
1375
1376         if (nw > 1) {
1377                 log_err("%s: multiple waitees %s found,\n"
1378                         "please avoid duplicates when using wait_for option.\n",
1379                                 jobname, o->wait_for);
1380                 return false;
1381         }
1382
1383         return true;
1384 }
1385
1386 /*
1387  * Adds a job to the list of things todo. Sanitizes the various options
1388  * to make sure we don't have conflicts, and initializes various
1389  * members of td.
1390  */
1391 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1392                    int recursed, int client_type)
1393 {
1394         unsigned int i;
1395         char fname[PATH_MAX];
1396         int numjobs, file_alloced;
1397         struct thread_options *o = &td->o;
1398         char logname[PATH_MAX + 32];
1399
1400         /*
1401          * the def_thread is just for options, it's not a real job
1402          */
1403         if (td == &def_thread)
1404                 return 0;
1405
1406         init_flags(td);
1407
1408         /*
1409          * if we are just dumping the output command line, don't add the job
1410          */
1411         if (parse_dryrun()) {
1412                 put_job(td);
1413                 return 0;
1414         }
1415
1416         td->client_type = client_type;
1417
1418         if (profile_td_init(td))
1419                 goto err;
1420
1421         if (ioengine_load(td))
1422                 goto err;
1423
1424         file_alloced = 0;
1425         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1426                 file_alloced = 1;
1427
1428                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1429                         add_file(td, jobname, job_add_num, 0);
1430                 else {
1431                         for (i = 0; i < o->nr_files; i++)
1432                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1433                 }
1434         }
1435
1436         if (fixup_options(td))
1437                 goto err;
1438
1439         /*
1440          * Belongs to fixup_options, but o->name is not necessarily set as yet
1441          */
1442         if (!wait_for_ok(jobname, o))
1443                 goto err;
1444
1445         flow_init_job(td);
1446
1447         /*
1448          * IO engines only need this for option callbacks, and the address may
1449          * change in subprocesses.
1450          */
1451         if (td->eo)
1452                 *(struct thread_data **)td->eo = NULL;
1453
1454         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1455                 struct fio_file *f;
1456
1457                 for_each_file(td, f, i)
1458                         f->real_file_size = -1ULL;
1459         }
1460
1461         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1462
1463         td->ts.clat_percentiles = o->clat_percentiles;
1464         td->ts.lat_percentiles = o->lat_percentiles;
1465         td->ts.percentile_precision = o->percentile_precision;
1466         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1467
1468         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1469                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1470                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1471                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1472                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1473                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1474         }
1475         td->ddir_seq_nr = o->ddir_seq_nr;
1476
1477         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1478                 prev_group_jobs = 0;
1479                 groupid++;
1480                 if (groupid == INT_MAX) {
1481                         log_err("fio: too many groups defined\n");
1482                         goto err;
1483                 }
1484         }
1485
1486         td->groupid = groupid;
1487         prev_group_jobs++;
1488
1489         if (setup_random_seeds(td)) {
1490                 td_verror(td, errno, "setup_random_seeds");
1491                 goto err;
1492         }
1493
1494         if (setup_rate(td))
1495                 goto err;
1496
1497         if (o->write_lat_log) {
1498                 struct log_params p = {
1499                         .td = td,
1500                         .avg_msec = o->log_avg_msec,
1501                         .hist_msec = o->log_hist_msec,
1502                         .hist_coarseness = o->log_hist_coarseness,
1503                         .log_type = IO_LOG_TYPE_LAT,
1504                         .log_offset = o->log_offset,
1505                         .log_gz = o->log_gz,
1506                         .log_gz_store = o->log_gz_store,
1507                 };
1508                 const char *pre = o->lat_log_file ? o->lat_log_file : o->name;
1509                 const char *suf;
1510
1511                 if (p.log_gz_store)
1512                         suf = "log.fz";
1513                 else
1514                         suf = "log";
1515
1516                 gen_log_name(logname, sizeof(logname), "lat", pre,
1517                                 td->thread_number, suf, o->per_job_logs);
1518                 setup_log(&td->lat_log, &p, logname);
1519
1520                 gen_log_name(logname, sizeof(logname), "slat", pre,
1521                                 td->thread_number, suf, o->per_job_logs);
1522                 setup_log(&td->slat_log, &p, logname);
1523
1524                 gen_log_name(logname, sizeof(logname), "clat", pre,
1525                                 td->thread_number, suf, o->per_job_logs);
1526                 setup_log(&td->clat_log, &p, logname);
1527         }
1528
1529         if (o->write_hist_log) {
1530                 struct log_params p = {
1531                         .td = td,
1532                         .avg_msec = o->log_avg_msec,
1533                         .hist_msec = o->log_hist_msec,
1534                         .hist_coarseness = o->log_hist_coarseness,
1535                         .log_type = IO_LOG_TYPE_HIST,
1536                         .log_offset = o->log_offset,
1537                         .log_gz = o->log_gz,
1538                         .log_gz_store = o->log_gz_store,
1539                 };
1540                 const char *pre = o->hist_log_file ? o->hist_log_file : o->name;
1541                 const char *suf;
1542
1543 #ifndef CONFIG_ZLIB
1544                 if (td->client_type) {
1545                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1546                         goto err;
1547                 }
1548 #endif
1549
1550                 if (p.log_gz_store)
1551                         suf = "log.fz";
1552                 else
1553                         suf = "log";
1554
1555                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1556                                 td->thread_number, suf, o->per_job_logs);
1557                 setup_log(&td->clat_hist_log, &p, logname);
1558         }
1559
1560         if (o->write_bw_log) {
1561                 struct log_params p = {
1562                         .td = td,
1563                         .avg_msec = o->log_avg_msec,
1564                         .hist_msec = o->log_hist_msec,
1565                         .hist_coarseness = o->log_hist_coarseness,
1566                         .log_type = IO_LOG_TYPE_BW,
1567                         .log_offset = o->log_offset,
1568                         .log_gz = o->log_gz,
1569                         .log_gz_store = o->log_gz_store,
1570                 };
1571                 const char *pre = o->bw_log_file ? o->bw_log_file : o->name;
1572                 const char *suf;
1573
1574                 if (fio_option_is_set(o, bw_avg_time))
1575                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1576                 else
1577                         o->bw_avg_time = p.avg_msec;
1578
1579                 p.hist_msec = o->log_hist_msec;
1580                 p.hist_coarseness = o->log_hist_coarseness;
1581
1582                 if (p.log_gz_store)
1583                         suf = "log.fz";
1584                 else
1585                         suf = "log";
1586
1587                 gen_log_name(logname, sizeof(logname), "bw", pre,
1588                                 td->thread_number, suf, o->per_job_logs);
1589                 setup_log(&td->bw_log, &p, logname);
1590         }
1591         if (o->write_iops_log) {
1592                 struct log_params p = {
1593                         .td = td,
1594                         .avg_msec = o->log_avg_msec,
1595                         .hist_msec = o->log_hist_msec,
1596                         .hist_coarseness = o->log_hist_coarseness,
1597                         .log_type = IO_LOG_TYPE_IOPS,
1598                         .log_offset = o->log_offset,
1599                         .log_gz = o->log_gz,
1600                         .log_gz_store = o->log_gz_store,
1601                 };
1602                 const char *pre = o->iops_log_file ? o->iops_log_file : o->name;
1603                 const char *suf;
1604
1605                 if (fio_option_is_set(o, iops_avg_time))
1606                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1607                 else
1608                         o->iops_avg_time = p.avg_msec;
1609
1610                 p.hist_msec = o->log_hist_msec;
1611                 p.hist_coarseness = o->log_hist_coarseness;
1612
1613                 if (p.log_gz_store)
1614                         suf = "log.fz";
1615                 else
1616                         suf = "log";
1617
1618                 gen_log_name(logname, sizeof(logname), "iops", pre,
1619                                 td->thread_number, suf, o->per_job_logs);
1620                 setup_log(&td->iops_log, &p, logname);
1621         }
1622
1623         if (!o->name)
1624                 o->name = strdup(jobname);
1625
1626         if (output_format & FIO_OUTPUT_NORMAL) {
1627                 if (!job_add_num) {
1628                         if (is_backend && !recursed)
1629                                 fio_server_send_add_job(td);
1630
1631                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1632                                 char *c1, *c2, *c3, *c4;
1633                                 char *c5 = NULL, *c6 = NULL;
1634                                 int i2p = is_power_of_2(o->kb_base);
1635
1636                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1637                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1638                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1639                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1640
1641                                 if (!o->bs_is_seq_rand) {
1642                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1643                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1644                                 }
1645
1646                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1647                                                         td->groupid,
1648                                                         ddir_str(o->td_ddir));
1649
1650                                 if (o->bs_is_seq_rand)
1651                                         log_info("bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1652                                                         c1, c2, c3, c4);
1653                                 else
1654                                         log_info("bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1655                                                         c1, c2, c3, c4, c5, c6);
1656
1657                                 log_info("ioengine=%s, iodepth=%u\n",
1658                                                 td->io_ops->name, o->iodepth);
1659
1660                                 free(c1);
1661                                 free(c2);
1662                                 free(c3);
1663                                 free(c4);
1664                                 free(c5);
1665                                 free(c6);
1666                         }
1667                 } else if (job_add_num == 1)
1668                         log_info("...\n");
1669         }
1670
1671         if (td_steadystate_init(td))
1672                 goto err;
1673
1674         /*
1675          * recurse add identical jobs, clear numjobs and stonewall options
1676          * as they don't apply to sub-jobs
1677          */
1678         numjobs = o->numjobs;
1679         while (--numjobs) {
1680                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1681
1682                 if (!td_new)
1683                         goto err;
1684
1685                 td_new->o.numjobs = 1;
1686                 td_new->o.stonewall = 0;
1687                 td_new->o.new_group = 0;
1688                 td_new->subjob_number = numjobs;
1689                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1690                 td_new->o.ss_limit = o->ss_limit;
1691
1692                 if (file_alloced) {
1693                         if (td_new->files) {
1694                                 struct fio_file *f;
1695                                 for_each_file(td_new, f, i) {
1696                                         if (f->file_name)
1697                                                 sfree(f->file_name);
1698                                         sfree(f);
1699                                 }
1700                                 free(td_new->files);
1701                                 td_new->files = NULL;
1702                         }
1703                         td_new->files_index = 0;
1704                         td_new->files_size = 0;
1705                         if (td_new->o.filename) {
1706                                 free(td_new->o.filename);
1707                                 td_new->o.filename = NULL;
1708                         }
1709                 }
1710
1711                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1712                         goto err;
1713         }
1714
1715         return 0;
1716 err:
1717         put_job(td);
1718         return -1;
1719 }
1720
1721 /*
1722  * Parse as if 'o' was a command line
1723  */
1724 void add_job_opts(const char **o, int client_type)
1725 {
1726         struct thread_data *td, *td_parent;
1727         int i, in_global = 1;
1728         char jobname[32];
1729
1730         i = 0;
1731         td_parent = td = NULL;
1732         while (o[i]) {
1733                 if (!strncmp(o[i], "name", 4)) {
1734                         in_global = 0;
1735                         if (td)
1736                                 add_job(td, jobname, 0, 0, client_type);
1737                         td = NULL;
1738                         sprintf(jobname, "%s", o[i] + 5);
1739                 }
1740                 if (in_global && !td_parent)
1741                         td_parent = get_new_job(true, &def_thread, false, jobname);
1742                 else if (!in_global && !td) {
1743                         if (!td_parent)
1744                                 td_parent = &def_thread;
1745                         td = get_new_job(false, td_parent, false, jobname);
1746                 }
1747                 if (in_global)
1748                         fio_options_parse(td_parent, (char **) &o[i], 1);
1749                 else
1750                         fio_options_parse(td, (char **) &o[i], 1);
1751                 i++;
1752         }
1753
1754         if (td)
1755                 add_job(td, jobname, 0, 0, client_type);
1756 }
1757
1758 static int skip_this_section(const char *name)
1759 {
1760         int i;
1761
1762         if (!nr_job_sections)
1763                 return 0;
1764         if (!strncmp(name, "global", 6))
1765                 return 0;
1766
1767         for (i = 0; i < nr_job_sections; i++)
1768                 if (!strcmp(job_sections[i], name))
1769                         return 0;
1770
1771         return 1;
1772 }
1773
1774 static int is_empty_or_comment(char *line)
1775 {
1776         unsigned int i;
1777
1778         for (i = 0; i < strlen(line); i++) {
1779                 if (line[i] == ';')
1780                         return 1;
1781                 if (line[i] == '#')
1782                         return 1;
1783                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1784                         return 0;
1785         }
1786
1787         return 1;
1788 }
1789
1790 /*
1791  * This is our [ini] type file parser.
1792  */
1793 static int __parse_jobs_ini(struct thread_data *td,
1794                 char *file, int is_buf, int stonewall_flag, int type,
1795                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1796 {
1797         bool global = false;
1798         char *string;
1799         FILE *f;
1800         char *p;
1801         int ret = 0, stonewall;
1802         int first_sect = 1;
1803         int skip_fgets = 0;
1804         int inside_skip = 0;
1805         char **opts;
1806         int i, alloc_opts, num_opts;
1807
1808         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1809         assert(td || !nested);
1810
1811         if (is_buf)
1812                 f = NULL;
1813         else {
1814                 if (!strcmp(file, "-"))
1815                         f = stdin;
1816                 else
1817                         f = fopen(file, "r");
1818
1819                 if (!f) {
1820                         int __err = errno;
1821
1822                         log_err("fio: unable to open '%s' job file\n", file);
1823                         if (td)
1824                                 td_verror(td, __err, "job file open");
1825                         return 1;
1826                 }
1827         }
1828
1829         string = malloc(4096);
1830
1831         /*
1832          * it's really 256 + small bit, 280 should suffice
1833          */
1834         if (!nested) {
1835                 name = malloc(280);
1836                 memset(name, 0, 280);
1837         }
1838
1839         opts = NULL;
1840         if (nested && popts) {
1841                 opts = *popts;
1842                 alloc_opts = *aopts;
1843                 num_opts = *nopts;
1844         }
1845
1846         if (!opts) {
1847                 alloc_opts = 8;
1848                 opts = malloc(sizeof(char *) * alloc_opts);
1849                 num_opts = 0;
1850         }
1851
1852         stonewall = stonewall_flag;
1853         do {
1854                 /*
1855                  * if skip_fgets is set, we already have loaded a line we
1856                  * haven't handled.
1857                  */
1858                 if (!skip_fgets) {
1859                         if (is_buf)
1860                                 p = strsep(&file, "\n");
1861                         else
1862                                 p = fgets(string, 4096, f);
1863                         if (!p)
1864                                 break;
1865                 }
1866
1867                 skip_fgets = 0;
1868                 strip_blank_front(&p);
1869                 strip_blank_end(p);
1870
1871                 dprint(FD_PARSE, "%s\n", p);
1872                 if (is_empty_or_comment(p))
1873                         continue;
1874
1875                 if (!nested) {
1876                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1877                                 if (inside_skip)
1878                                         continue;
1879
1880                                 log_err("fio: option <%s> outside of "
1881                                         "[] job section\n", p);
1882                                 ret = 1;
1883                                 break;
1884                         }
1885
1886                         name[strlen(name) - 1] = '\0';
1887
1888                         if (skip_this_section(name)) {
1889                                 inside_skip = 1;
1890                                 continue;
1891                         } else
1892                                 inside_skip = 0;
1893
1894                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1895
1896                         global = !strncmp(name, "global", 6);
1897
1898                         if (dump_cmdline) {
1899                                 if (first_sect)
1900                                         log_info("fio ");
1901                                 if (!global)
1902                                         log_info("--name=%s ", name);
1903                                 first_sect = 0;
1904                         }
1905
1906                         td = get_new_job(global, &def_thread, false, name);
1907                         if (!td) {
1908                                 ret = 1;
1909                                 break;
1910                         }
1911
1912                         /*
1913                          * Separate multiple job files by a stonewall
1914                          */
1915                         if (!global && stonewall) {
1916                                 td->o.stonewall = stonewall;
1917                                 stonewall = 0;
1918                         }
1919
1920                         num_opts = 0;
1921                         memset(opts, 0, alloc_opts * sizeof(char *));
1922                 }
1923                 else
1924                         skip_fgets = 1;
1925
1926                 while (1) {
1927                         if (!skip_fgets) {
1928                                 if (is_buf)
1929                                         p = strsep(&file, "\n");
1930                                 else
1931                                         p = fgets(string, 4096, f);
1932                                 if (!p)
1933                                         break;
1934                                 dprint(FD_PARSE, "%s", p);
1935                         }
1936                         else
1937                                 skip_fgets = 0;
1938
1939                         if (is_empty_or_comment(p))
1940                                 continue;
1941
1942                         strip_blank_front(&p);
1943
1944                         /*
1945                          * new section, break out and make sure we don't
1946                          * fgets() a new line at the top.
1947                          */
1948                         if (p[0] == '[') {
1949                                 if (nested) {
1950                                         log_err("No new sections in included files\n");
1951                                         return 1;
1952                                 }
1953
1954                                 skip_fgets = 1;
1955                                 break;
1956                         }
1957
1958                         strip_blank_end(p);
1959
1960                         if (!strncmp(p, "include", strlen("include"))) {
1961                                 char *filename = p + strlen("include") + 1,
1962                                         *ts, *full_fn = NULL;
1963
1964                                 /*
1965                                  * Allow for the include filename
1966                                  * specification to be relative.
1967                                  */
1968                                 if (access(filename, F_OK) &&
1969                                     (ts = strrchr(file, '/'))) {
1970                                         int len = ts - file +
1971                                                 strlen(filename) + 2;
1972
1973                                         if (!(full_fn = calloc(1, len))) {
1974                                                 ret = ENOMEM;
1975                                                 break;
1976                                         }
1977
1978                                         strncpy(full_fn,
1979                                                 file, (ts - file) + 1);
1980                                         strncpy(full_fn + (ts - file) + 1,
1981                                                 filename, strlen(filename));
1982                                         full_fn[len - 1] = 0;
1983                                         filename = full_fn;
1984                                 }
1985
1986                                 ret = __parse_jobs_ini(td, filename, is_buf,
1987                                                        stonewall_flag, type, 1,
1988                                                        name, &opts,
1989                                                        &alloc_opts, &num_opts);
1990
1991                                 if (ret) {
1992                                         log_err("Error %d while parsing "
1993                                                 "include file %s\n",
1994                                                 ret, filename);
1995                                 }
1996
1997                                 if (full_fn)
1998                                         free(full_fn);
1999
2000                                 if (ret)
2001                                         break;
2002
2003                                 continue;
2004                         }
2005
2006                         if (num_opts == alloc_opts) {
2007                                 alloc_opts <<= 1;
2008                                 opts = realloc(opts,
2009                                                 alloc_opts * sizeof(char *));
2010                         }
2011
2012                         opts[num_opts] = strdup(p);
2013                         num_opts++;
2014                 }
2015
2016                 if (nested) {
2017                         *popts = opts;
2018                         *aopts = alloc_opts;
2019                         *nopts = num_opts;
2020                         goto out;
2021                 }
2022
2023                 ret = fio_options_parse(td, opts, num_opts);
2024                 if (!ret) {
2025                         if (dump_cmdline)
2026                                 dump_opt_list(td);
2027
2028                         ret = add_job(td, name, 0, 0, type);
2029                 } else {
2030                         log_err("fio: job %s dropped\n", name);
2031                         put_job(td);
2032                 }
2033
2034                 for (i = 0; i < num_opts; i++)
2035                         free(opts[i]);
2036                 num_opts = 0;
2037         } while (!ret);
2038
2039         if (dump_cmdline)
2040                 log_info("\n");
2041
2042         i = 0;
2043         while (i < nr_job_sections) {
2044                 free(job_sections[i]);
2045                 i++;
2046         }
2047
2048         free(opts);
2049 out:
2050         free(string);
2051         if (!nested)
2052                 free(name);
2053         if (!is_buf && f != stdin)
2054                 fclose(f);
2055         return ret;
2056 }
2057
2058 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2059 {
2060         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2061                         0, NULL, NULL, NULL, NULL);
2062 }
2063
2064 static int fill_def_thread(void)
2065 {
2066         memset(&def_thread, 0, sizeof(def_thread));
2067         INIT_FLIST_HEAD(&def_thread.opt_list);
2068
2069         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2070         def_thread.o.error_dump = 1;
2071
2072         /*
2073          * fill default options
2074          */
2075         fio_fill_default_options(&def_thread);
2076         return 0;
2077 }
2078
2079 static void show_debug_categories(void)
2080 {
2081 #ifdef FIO_INC_DEBUG
2082         struct debug_level *dl = &debug_levels[0];
2083         int curlen, first = 1;
2084
2085         curlen = 0;
2086         while (dl->name) {
2087                 int has_next = (dl + 1)->name != NULL;
2088
2089                 if (first || curlen + strlen(dl->name) >= 80) {
2090                         if (!first) {
2091                                 printf("\n");
2092                                 curlen = 0;
2093                         }
2094                         curlen += printf("\t\t\t%s", dl->name);
2095                         curlen += 3 * (8 - 1);
2096                         if (has_next)
2097                                 curlen += printf(",");
2098                 } else {
2099                         curlen += printf("%s", dl->name);
2100                         if (has_next)
2101                                 curlen += printf(",");
2102                 }
2103                 dl++;
2104                 first = 0;
2105         }
2106         printf("\n");
2107 #endif
2108 }
2109
2110 /*
2111  * Following options aren't printed by usage().
2112  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2113  * --latency-log - Deprecated option.
2114  */
2115 static void usage(const char *name)
2116 {
2117         printf("%s\n", fio_version_string);
2118         printf("%s [options] [job options] <job file(s)>\n", name);
2119         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2120         show_debug_categories();
2121         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2122         printf("  --output\t\tWrite output to file\n");
2123         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2124         printf("  --minimal\t\tMinimal (terse) output\n");
2125         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2126         printf("  --terse-version=type\tSet terse version output format"
2127                 " (default 3, or 2 or 4)\n");
2128         printf("  --version\t\tPrint version info and exit\n");
2129         printf("  --help\t\tPrint this page\n");
2130         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2131         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2132         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2133                 " them\n");
2134         printf("  --enghelp=engine\tPrint ioengine help, or list"
2135                 " available ioengines\n");
2136         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2137                 " cmd\n");
2138         printf("  --showcmd\t\tTurn a job file into command line options\n");
2139         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2140         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2141         printf("  --eta-newline=time\tForce a new line for every 'time'");
2142         printf(" period passed\n");
2143         printf("  --status-interval=t\tForce full status dump every");
2144         printf(" 't' period passed\n");
2145         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2146                 " writes\n");
2147         printf("  --section=name\tOnly run specified section in job file,"
2148                 " multiple sections can be specified\n");
2149         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2150                 " (def 16384)\n");
2151         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2152         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2153         printf("  --server=args\t\tStart a backend fio server\n");
2154         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2155         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2156         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2157         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2158                 "\t\t\t(option=system,percpu) or run unit work\n"
2159                 "\t\t\tcalibration only (option=calibrate)\n");
2160 #ifdef CONFIG_ZLIB
2161         printf("  --inflate-log=log\tInflate and output compressed log\n");
2162 #endif
2163         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2164         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2165         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2166         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2167         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2168         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2169 }
2170
2171 #ifdef FIO_INC_DEBUG
2172 struct debug_level debug_levels[] = {
2173         { .name = "process",
2174           .help = "Process creation/exit logging",
2175           .shift = FD_PROCESS,
2176         },
2177         { .name = "file",
2178           .help = "File related action logging",
2179           .shift = FD_FILE,
2180         },
2181         { .name = "io",
2182           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2183           .shift = FD_IO,
2184         },
2185         { .name = "mem",
2186           .help = "Memory allocation/freeing logging",
2187           .shift = FD_MEM,
2188         },
2189         { .name = "blktrace",
2190           .help = "blktrace action logging",
2191           .shift = FD_BLKTRACE,
2192         },
2193         { .name = "verify",
2194           .help = "IO verification action logging",
2195           .shift = FD_VERIFY,
2196         },
2197         { .name = "random",
2198           .help = "Random generation logging",
2199           .shift = FD_RANDOM,
2200         },
2201         { .name = "parse",
2202           .help = "Parser logging",
2203           .shift = FD_PARSE,
2204         },
2205         { .name = "diskutil",
2206           .help = "Disk utility logging actions",
2207           .shift = FD_DISKUTIL,
2208         },
2209         { .name = "job",
2210           .help = "Logging related to creating/destroying jobs",
2211           .shift = FD_JOB,
2212         },
2213         { .name = "mutex",
2214           .help = "Mutex logging",
2215           .shift = FD_MUTEX
2216         },
2217         { .name = "profile",
2218           .help = "Logging related to profiles",
2219           .shift = FD_PROFILE,
2220         },
2221         { .name = "time",
2222           .help = "Logging related to time keeping functions",
2223           .shift = FD_TIME,
2224         },
2225         { .name = "net",
2226           .help = "Network logging",
2227           .shift = FD_NET,
2228         },
2229         { .name = "rate",
2230           .help = "Rate logging",
2231           .shift = FD_RATE,
2232         },
2233         { .name = "compress",
2234           .help = "Log compression logging",
2235           .shift = FD_COMPRESS,
2236         },
2237         { .name = "steadystate",
2238           .help = "Steady state detection logging",
2239           .shift = FD_STEADYSTATE,
2240         },
2241         { .name = "helperthread",
2242           .help = "Helper thread logging",
2243           .shift = FD_HELPERTHREAD,
2244         },
2245         { .name = NULL, },
2246 };
2247
2248 static int set_debug(const char *string)
2249 {
2250         struct debug_level *dl;
2251         char *p = (char *) string;
2252         char *opt;
2253         int i;
2254
2255         if (!string)
2256                 return 0;
2257
2258         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2259                 log_info("fio: dumping debug options:");
2260                 for (i = 0; debug_levels[i].name; i++) {
2261                         dl = &debug_levels[i];
2262                         log_info("%s,", dl->name);
2263                 }
2264                 log_info("all\n");
2265                 return 1;
2266         }
2267
2268         while ((opt = strsep(&p, ",")) != NULL) {
2269                 int found = 0;
2270
2271                 if (!strncmp(opt, "all", 3)) {
2272                         log_info("fio: set all debug options\n");
2273                         fio_debug = ~0UL;
2274                         continue;
2275                 }
2276
2277                 for (i = 0; debug_levels[i].name; i++) {
2278                         dl = &debug_levels[i];
2279                         found = !strncmp(opt, dl->name, strlen(dl->name));
2280                         if (!found)
2281                                 continue;
2282
2283                         if (dl->shift == FD_JOB) {
2284                                 opt = strchr(opt, ':');
2285                                 if (!opt) {
2286                                         log_err("fio: missing job number\n");
2287                                         break;
2288                                 }
2289                                 opt++;
2290                                 fio_debug_jobno = atoi(opt);
2291                                 log_info("fio: set debug jobno %d\n",
2292                                                         fio_debug_jobno);
2293                         } else {
2294                                 log_info("fio: set debug option %s\n", opt);
2295                                 fio_debug |= (1UL << dl->shift);
2296                         }
2297                         break;
2298                 }
2299
2300                 if (!found)
2301                         log_err("fio: debug mask %s not found\n", opt);
2302         }
2303         return 0;
2304 }
2305 #else
2306 static int set_debug(const char *string)
2307 {
2308         log_err("fio: debug tracing not included in build\n");
2309         return 1;
2310 }
2311 #endif
2312
2313 static void fio_options_fill_optstring(void)
2314 {
2315         char *ostr = cmd_optstr;
2316         int i, c;
2317
2318         c = i = 0;
2319         while (l_opts[i].name) {
2320                 ostr[c++] = l_opts[i].val;
2321                 if (l_opts[i].has_arg == required_argument)
2322                         ostr[c++] = ':';
2323                 else if (l_opts[i].has_arg == optional_argument) {
2324                         ostr[c++] = ':';
2325                         ostr[c++] = ':';
2326                 }
2327                 i++;
2328         }
2329         ostr[c] = '\0';
2330 }
2331
2332 static int client_flag_set(char c)
2333 {
2334         int i;
2335
2336         i = 0;
2337         while (l_opts[i].name) {
2338                 int val = l_opts[i].val;
2339
2340                 if (c == (val & 0xff))
2341                         return (val & FIO_CLIENT_FLAG);
2342
2343                 i++;
2344         }
2345
2346         return 0;
2347 }
2348
2349 static void parse_cmd_client(void *client, char *opt)
2350 {
2351         fio_client_add_cmd_option(client, opt);
2352 }
2353
2354 static void show_closest_option(const char *name)
2355 {
2356         int best_option, best_distance;
2357         int i, distance;
2358
2359         while (*name == '-')
2360                 name++;
2361
2362         best_option = -1;
2363         best_distance = INT_MAX;
2364         i = 0;
2365         while (l_opts[i].name) {
2366                 distance = string_distance(name, l_opts[i].name);
2367                 if (distance < best_distance) {
2368                         best_distance = distance;
2369                         best_option = i;
2370                 }
2371                 i++;
2372         }
2373
2374         if (best_option != -1 && string_distance_ok(name, best_distance))
2375                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2376 }
2377
2378 static int parse_output_format(const char *optarg)
2379 {
2380         char *p, *orig, *opt;
2381         int ret = 0;
2382
2383         p = orig = strdup(optarg);
2384
2385         output_format = 0;
2386
2387         while ((opt = strsep(&p, ",")) != NULL) {
2388                 if (!strcmp(opt, "minimal") ||
2389                     !strcmp(opt, "terse") ||
2390                     !strcmp(opt, "csv"))
2391                         output_format |= FIO_OUTPUT_TERSE;
2392                 else if (!strcmp(opt, "json"))
2393                         output_format |= FIO_OUTPUT_JSON;
2394                 else if (!strcmp(opt, "json+"))
2395                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2396                 else if (!strcmp(opt, "normal"))
2397                         output_format |= FIO_OUTPUT_NORMAL;
2398                 else {
2399                         log_err("fio: invalid output format %s\n", opt);
2400                         ret = 1;
2401                         break;
2402                 }
2403         }
2404
2405         free(orig);
2406         return ret;
2407 }
2408
2409 int parse_cmd_line(int argc, char *argv[], int client_type)
2410 {
2411         struct thread_data *td = NULL;
2412         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2413         char *ostr = cmd_optstr;
2414         char *pid_file = NULL;
2415         void *cur_client = NULL;
2416         int backend = 0;
2417
2418         /*
2419          * Reset optind handling, since we may call this multiple times
2420          * for the backend.
2421          */
2422         optind = 1;
2423
2424         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2425                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2426                         parse_cmd_client(cur_client, argv[optind - 1]);
2427                         c &= ~FIO_CLIENT_FLAG;
2428                 }
2429
2430                 switch (c) {
2431                 case 'a':
2432                         smalloc_pool_size = atoi(optarg);
2433                         smalloc_pool_size <<= 10;
2434                         sinit();
2435                         break;
2436                 case 'l':
2437                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2438                         do_exit++;
2439                         exit_val = 1;
2440                         break;
2441                 case 'b':
2442                         write_bw_log = 1;
2443                         break;
2444                 case 'o': {
2445                         FILE *tmp;
2446
2447                         if (f_out && f_out != stdout)
2448                                 fclose(f_out);
2449
2450                         tmp = fopen(optarg, "w+");
2451                         if (!tmp) {
2452                                 log_err("fio: output file open error: %s\n", strerror(errno));
2453                                 exit_val = 1;
2454                                 do_exit++;
2455                                 break;
2456                         }
2457                         f_err = f_out = tmp;
2458                         break;
2459                         }
2460                 case 'm':
2461                         output_format = FIO_OUTPUT_TERSE;
2462                         break;
2463                 case 'F':
2464                         if (parse_output_format(optarg)) {
2465                                 log_err("fio: failed parsing output-format\n");
2466                                 exit_val = 1;
2467                                 do_exit++;
2468                                 break;
2469                         }
2470                         break;
2471                 case 'f':
2472                         output_format |= FIO_OUTPUT_TERSE;
2473                         break;
2474                 case 'h':
2475                         did_arg = true;
2476                         if (!cur_client) {
2477                                 usage(argv[0]);
2478                                 do_exit++;
2479                         }
2480                         break;
2481                 case 'c':
2482                         did_arg = true;
2483                         if (!cur_client) {
2484                                 fio_show_option_help(optarg);
2485                                 do_exit++;
2486                         }
2487                         break;
2488                 case 'i':
2489                         did_arg = true;
2490                         if (!cur_client) {
2491                                 fio_show_ioengine_help(optarg);
2492                                 do_exit++;
2493                         }
2494                         break;
2495                 case 's':
2496                         did_arg = true;
2497                         dump_cmdline = 1;
2498                         break;
2499                 case 'r':
2500                         read_only = 1;
2501                         break;
2502                 case 'v':
2503                         did_arg = true;
2504                         if (!cur_client) {
2505                                 log_info("%s\n", fio_version_string);
2506                                 do_exit++;
2507                         }
2508                         break;
2509                 case 'V':
2510                         terse_version = atoi(optarg);
2511                         if (!(terse_version >= 2 && terse_version <= 5)) {
2512                                 log_err("fio: bad terse version format\n");
2513                                 exit_val = 1;
2514                                 do_exit++;
2515                         }
2516                         break;
2517                 case 'e':
2518                         if (!strcmp("always", optarg))
2519                                 eta_print = FIO_ETA_ALWAYS;
2520                         else if (!strcmp("never", optarg))
2521                                 eta_print = FIO_ETA_NEVER;
2522                         break;
2523                 case 'E': {
2524                         long long t = 0;
2525
2526                         if (check_str_time(optarg, &t, 1)) {
2527                                 log_err("fio: failed parsing eta time %s\n", optarg);
2528                                 exit_val = 1;
2529                                 do_exit++;
2530                                 break;
2531                         }
2532                         eta_new_line = t / 1000;
2533                         if (!eta_new_line) {
2534                                 log_err("fio: eta new line time too short\n");
2535                                 exit_val = 1;
2536                                 do_exit++;
2537                         }
2538                         break;
2539                         }
2540                 case 'O': {
2541                         long long t = 0;
2542
2543                         if (check_str_time(optarg, &t, 1)) {
2544                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2545                                 exit_val = 1;
2546                                 do_exit++;
2547                                 break;
2548                         }
2549                         eta_interval_msec = t / 1000;
2550                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2551                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2552                                 exit_val = 1;
2553                                 do_exit++;
2554                         }
2555                         break;
2556                         }
2557                 case 'd':
2558                         if (set_debug(optarg))
2559                                 do_exit++;
2560                         break;
2561                 case 'P':
2562                         did_arg = true;
2563                         parse_only = 1;
2564                         break;
2565                 case 'x': {
2566                         size_t new_size;
2567
2568                         if (!strcmp(optarg, "global")) {
2569                                 log_err("fio: can't use global as only "
2570                                         "section\n");
2571                                 do_exit++;
2572                                 exit_val = 1;
2573                                 break;
2574                         }
2575                         new_size = (nr_job_sections + 1) * sizeof(char *);
2576                         job_sections = realloc(job_sections, new_size);
2577                         job_sections[nr_job_sections] = strdup(optarg);
2578                         nr_job_sections++;
2579                         break;
2580                         }
2581 #ifdef CONFIG_ZLIB
2582                 case 'X':
2583                         exit_val = iolog_file_inflate(optarg);
2584                         did_arg = true;
2585                         do_exit++;
2586                         break;
2587 #endif
2588                 case 'p':
2589                         did_arg = true;
2590                         if (exec_profile)
2591                                 free(exec_profile);
2592                         exec_profile = strdup(optarg);
2593                         break;
2594                 case FIO_GETOPT_JOB: {
2595                         const char *opt = l_opts[lidx].name;
2596                         char *val = optarg;
2597
2598                         if (!strncmp(opt, "name", 4) && td) {
2599                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2600                                 if (ret)
2601                                         goto out_free;
2602                                 td = NULL;
2603                                 did_arg = true;
2604                         }
2605                         if (!td) {
2606                                 int is_section = !strncmp(opt, "name", 4);
2607                                 int global = 0;
2608
2609                                 if (!is_section || !strncmp(val, "global", 6))
2610                                         global = 1;
2611
2612                                 if (is_section && skip_this_section(val))
2613                                         continue;
2614
2615                                 td = get_new_job(global, &def_thread, true, NULL);
2616                                 if (!td || ioengine_load(td)) {
2617                                         if (td) {
2618                                                 put_job(td);
2619                                                 td = NULL;
2620                                         }
2621                                         do_exit++;
2622                                         exit_val = 1;
2623                                         break;
2624                                 }
2625                                 fio_options_set_ioengine_opts(l_opts, td);
2626                         }
2627
2628                         if ((!val || !strlen(val)) &&
2629                             l_opts[lidx].has_arg == required_argument) {
2630                                 log_err("fio: option %s requires an argument\n", opt);
2631                                 ret = 1;
2632                         } else
2633                                 ret = fio_cmd_option_parse(td, opt, val);
2634
2635                         if (ret) {
2636                                 if (td) {
2637                                         put_job(td);
2638                                         td = NULL;
2639                                 }
2640                                 do_exit++;
2641                                 exit_val = 1;
2642                         }
2643
2644                         if (!ret && !strcmp(opt, "ioengine")) {
2645                                 if (ioengine_load(td)) {
2646                                         put_job(td);
2647                                         td = NULL;
2648                                         do_exit++;
2649                                         exit_val = 1;
2650                                         break;
2651                                 }
2652                                 fio_options_set_ioengine_opts(l_opts, td);
2653                         }
2654                         break;
2655                 }
2656                 case FIO_GETOPT_IOENGINE: {
2657                         const char *opt = l_opts[lidx].name;
2658                         char *val = optarg;
2659
2660                         if (!td)
2661                                 break;
2662
2663                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2664                         break;
2665                 }
2666                 case 'w':
2667                         warnings_fatal = 1;
2668                         break;
2669                 case 'j':
2670                         max_jobs = atoi(optarg);
2671                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2672                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2673                                 do_exit++;
2674                                 exit_val = 1;
2675                         }
2676                         break;
2677                 case 'S':
2678                         did_arg = true;
2679 #ifndef CONFIG_NO_SHM
2680                         if (nr_clients) {
2681                                 log_err("fio: can't be both client and server\n");
2682                                 do_exit++;
2683                                 exit_val = 1;
2684                                 break;
2685                         }
2686                         if (optarg)
2687                                 fio_server_set_arg(optarg);
2688                         is_backend = 1;
2689                         backend = 1;
2690 #else
2691                         log_err("fio: client/server requires SHM support\n");
2692                         do_exit++;
2693                         exit_val = 1;
2694 #endif
2695                         break;
2696                 case 'D':
2697                         if (pid_file)
2698                                 free(pid_file);
2699                         pid_file = strdup(optarg);
2700                         break;
2701                 case 'I':
2702                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2703                                 /* exit on error and calibration only */
2704                                 did_arg = true;
2705                                 do_exit++;
2706                                 if (ret == -1)
2707                                         exit_val = 1;
2708                         }
2709                         break;
2710                 case 'C':
2711                         did_arg = true;
2712                         if (is_backend) {
2713                                 log_err("fio: can't be both client and server\n");
2714                                 do_exit++;
2715                                 exit_val = 1;
2716                                 break;
2717                         }
2718                         /* if --client parameter contains a pathname */
2719                         if (0 == access(optarg, R_OK)) {
2720                                 /* file contains a list of host addrs or names */
2721                                 char hostaddr[PATH_MAX] = {0};
2722                                 char formatstr[8];
2723                                 FILE * hostf = fopen(optarg, "r");
2724                                 if (!hostf) {
2725                                         log_err("fio: could not open client list file %s for read\n", optarg);
2726                                         do_exit++;
2727                                         exit_val = 1;
2728                                         break;
2729                                 }
2730                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2731                                 /*
2732                                  * read at most PATH_MAX-1 chars from each
2733                                  * record in this file
2734                                  */
2735                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2736                                         /* expect EVERY host in file to be valid */
2737                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2738                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2739                                                 do_exit++;
2740                                                 exit_val = 1;
2741                                                 break;
2742                                         }
2743                                 }
2744                                 fclose(hostf);
2745                                 break; /* no possibility of job file for "this client only" */
2746                         }
2747                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2748                                 log_err("fio: failed adding client %s\n", optarg);
2749                                 do_exit++;
2750                                 exit_val = 1;
2751                                 break;
2752                         }
2753                         /*
2754                          * If the next argument exists and isn't an option,
2755                          * assume it's a job file for this client only.
2756                          */
2757                         while (optind < argc) {
2758                                 if (!strncmp(argv[optind], "--", 2) ||
2759                                     !strncmp(argv[optind], "-", 1))
2760                                         break;
2761
2762                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2763                                         break;
2764                                 optind++;
2765                         }
2766                         break;
2767                 case 'R':
2768                         did_arg = true;
2769                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2770                                 do_exit++;
2771                                 exit_val = 1;
2772                         }
2773                         break;
2774                 case 'T':
2775                         did_arg = true;
2776                         do_exit++;
2777                         exit_val = fio_monotonic_clocktest(1);
2778                         break;
2779                 case 'G':
2780                         did_arg = true;
2781                         do_exit++;
2782                         exit_val = fio_crctest(optarg);
2783                         break;
2784                 case 'M':
2785                         did_arg = true;
2786                         do_exit++;
2787                         exit_val = fio_memcpy_test(optarg);
2788                         break;
2789                 case 'L': {
2790                         long long val;
2791
2792                         if (check_str_time(optarg, &val, 1)) {
2793                                 log_err("fio: failed parsing time %s\n", optarg);
2794                                 do_exit++;
2795                                 exit_val = 1;
2796                                 break;
2797                         }
2798                         if (val < 1000) {
2799                                 log_err("fio: status interval too small\n");
2800                                 do_exit++;
2801                                 exit_val = 1;
2802                         }
2803                         status_interval = val / 1000;
2804                         break;
2805                         }
2806                 case 'W':
2807                         if (trigger_file)
2808                                 free(trigger_file);
2809                         trigger_file = strdup(optarg);
2810                         break;
2811                 case 'H':
2812                         if (trigger_cmd)
2813                                 free(trigger_cmd);
2814                         trigger_cmd = strdup(optarg);
2815                         break;
2816                 case 'J':
2817                         if (trigger_remote_cmd)
2818                                 free(trigger_remote_cmd);
2819                         trigger_remote_cmd = strdup(optarg);
2820                         break;
2821                 case 'K':
2822                         if (aux_path)
2823                                 free(aux_path);
2824                         aux_path = strdup(optarg);
2825                         break;
2826                 case 'B':
2827                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2828                                 log_err("fio: failed parsing time %s\n", optarg);
2829                                 do_exit++;
2830                                 exit_val = 1;
2831                         }
2832                         trigger_timeout /= 1000000;
2833                         break;
2834                 case '?':
2835                         log_err("%s: unrecognized option '%s'\n", argv[0],
2836                                                         argv[optind - 1]);
2837                         show_closest_option(argv[optind - 1]);
2838                 default:
2839                         do_exit++;
2840                         exit_val = 1;
2841                         break;
2842                 }
2843                 if (do_exit)
2844                         break;
2845         }
2846
2847         if (do_exit && !(is_backend || nr_clients))
2848                 exit(exit_val);
2849
2850         if (nr_clients && fio_clients_connect())
2851                 exit(1);
2852
2853         if (is_backend && backend)
2854                 return fio_start_server(pid_file);
2855         else if (pid_file)
2856                 free(pid_file);
2857
2858         if (td) {
2859                 if (!ret) {
2860                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2861                         if (ret)
2862                                 exit(1);
2863                 }
2864         }
2865
2866         while (!ret && optind < argc) {
2867                 ini_idx++;
2868                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2869                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2870                 optind++;
2871         }
2872
2873 out_free:
2874         return ini_idx;
2875 }
2876
2877 int fio_init_options(void)
2878 {
2879         f_out = stdout;
2880         f_err = stderr;
2881
2882         fio_options_fill_optstring();
2883         fio_options_dup_and_init(l_opts);
2884
2885         atexit(free_shm);
2886
2887         if (fill_def_thread())
2888                 return 1;
2889
2890         return 0;
2891 }
2892
2893 extern int fio_check_options(struct thread_options *);
2894
2895 int parse_options(int argc, char *argv[])
2896 {
2897         const int type = FIO_CLIENT_TYPE_CLI;
2898         int job_files, i;
2899
2900         if (fio_init_options())
2901                 return 1;
2902         if (fio_test_cconv(&def_thread.o))
2903                 log_err("fio: failed internal cconv test\n");
2904
2905         job_files = parse_cmd_line(argc, argv, type);
2906
2907         if (job_files > 0) {
2908                 for (i = 0; i < job_files; i++) {
2909                         if (i && fill_def_thread())
2910                                 return 1;
2911                         if (nr_clients) {
2912                                 if (fio_clients_send_ini(ini_file[i]))
2913                                         return 1;
2914                                 free(ini_file[i]);
2915                         } else if (!is_backend) {
2916                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2917                                         return 1;
2918                                 free(ini_file[i]);
2919                         }
2920                 }
2921         } else if (nr_clients) {
2922                 if (fill_def_thread())
2923                         return 1;
2924                 if (fio_clients_send_ini(NULL))
2925                         return 1;
2926         }
2927
2928         free(ini_file);
2929         fio_options_free(&def_thread);
2930         filesetup_mem_free();
2931
2932         if (!thread_number) {
2933                 if (parse_dryrun())
2934                         return 0;
2935                 if (exec_profile)
2936                         return 0;
2937                 if (is_backend || nr_clients)
2938                         return 0;
2939                 if (did_arg)
2940                         return 0;
2941
2942                 log_err("No job(s) defined\n\n");
2943                 usage(argv[0]);
2944                 return 1;
2945         }
2946
2947         if (output_format & FIO_OUTPUT_NORMAL)
2948                 log_info("%s\n", fio_version_string);
2949
2950         return 0;
2951 }
2952
2953 void options_default_fill(struct thread_options *o)
2954 {
2955         memcpy(o, &def_thread.o, sizeof(*o));
2956 }
2957
2958 struct thread_data *get_global_options(void)
2959 {
2960         return &def_thread;
2961 }