init.c

   1 /*
   2  * This file contains job initialization and setup functions.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <ctype.h>
   8 #include <string.h>
   9 #include <errno.h>
  10 #include <sys/ipc.h>
  11 #include <sys/types.h>
  12 #include <dlfcn.h>
  13 #ifdef CONFIG_VALGRIND_DEV
  14 #include <valgrind/drd.h>
  15 #else
  16 #define DRD_IGNORE_VAR(x) do { } while (0)
  17 #endif
  18
  19 #include "fio.h"
  20 #ifndef FIO_NO_HAVE_SHM_H
  21 #include <sys/shm.h>
  22 #endif
  23
  24 #include "parse.h"
  25 #include "smalloc.h"
  26 #include "filehash.h"
  27 #include "verify.h"
  28 #include "profile.h"
  29 #include "server.h"
  30 #include "idletime.h"
  31 #include "filelock.h"
  32 #include "steadystate.h"
  33
  34 #include "oslib/getopt.h"
  35 #include "oslib/strcasestr.h"
  36
  37 #include "crc/test.h"
  38 #include "lib/pow2.h"
  39 #include "lib/memcpy.h"
  40
  41 const char fio_version_string[] = FIO_VERSION;
  42
  43 #define FIO_RANDSEED            (0xb1899bedUL)
  44
  45 static char **ini_file;
  46 static int max_jobs = FIO_MAX_JOBS;
  47 static int dump_cmdline;
  48 static int parse_only;
  49
  50 static struct thread_data def_thread;
  51 struct thread_data *threads = NULL;
  52 static char **job_sections;
  53 static int nr_job_sections;
  54
  55 int exitall_on_terminate = 0;
  56 int output_format = FIO_OUTPUT_NORMAL;
  57 int eta_print = FIO_ETA_AUTO;
  58 unsigned int eta_interval_msec = 1000;
  59 int eta_new_line = 0;
  60 FILE *f_out = NULL;
  61 FILE *f_err = NULL;
  62 char *exec_profile = NULL;
  63 int warnings_fatal = 0;
  64 int terse_version = 3;
  65 int is_backend = 0;
  66 int is_local_backend = 0;
  67 int nr_clients = 0;
  68 int log_syslog = 0;
  69
  70 int write_bw_log = 0;
  71 int read_only = 0;
  72 int status_interval = 0;
  73
  74 char *trigger_file = NULL;
  75 long long trigger_timeout = 0;
  76 char *trigger_cmd = NULL;
  77 char *trigger_remote_cmd = NULL;
  78
  79 char *aux_path = NULL;
  80
  81 static int prev_group_jobs;
  82
  83 unsigned long fio_debug = 0;
  84 unsigned int fio_debug_jobno = -1;
  85 unsigned int *fio_debug_jobp = NULL;
  86 unsigned int *fio_warned = NULL;
  87
  88 static char cmd_optstr[256];
  89 static bool did_arg;
  90
  91 #define FIO_CLIENT_FLAG         (1 << 16)
  92
  93 /*
  94  * Command line options. These will contain the above, plus a few
  95  * extra that only pertain to fio itself and not jobs.
  96  */
  97 static struct option l_opts[FIO_NR_OPTIONS] = {
  98         {
  99                 .name           = (char *) "output",
 100                 .has_arg        = required_argument,
 101                 .val            = 'o' | FIO_CLIENT_FLAG,
 102         },
 103         {
 104                 .name           = (char *) "latency-log",
 105                 .has_arg        = required_argument,
 106                 .val            = 'l' | FIO_CLIENT_FLAG,
 107         },
 108         {
 109                 .name           = (char *) "bandwidth-log",
 110                 .has_arg        = no_argument,
 111                 .val            = 'b' | FIO_CLIENT_FLAG,
 112         },
 113         {
 114                 .name           = (char *) "minimal",
 115                 .has_arg        = no_argument,
 116                 .val            = 'm' | FIO_CLIENT_FLAG,
 117         },
 118         {
 119                 .name           = (char *) "output-format",
 120                 .has_arg        = required_argument,
 121                 .val            = 'F' | FIO_CLIENT_FLAG,
 122         },
 123         {
 124                 .name           = (char *) "append-terse",
 125                 .has_arg        = optional_argument,
 126                 .val            = 'f',
 127         },
 128         {
 129                 .name           = (char *) "version",
 130                 .has_arg        = no_argument,
 131                 .val            = 'v' | FIO_CLIENT_FLAG,
 132         },
 133         {
 134                 .name           = (char *) "help",
 135                 .has_arg        = no_argument,
 136                 .val            = 'h' | FIO_CLIENT_FLAG,
 137         },
 138         {
 139                 .name           = (char *) "cmdhelp",
 140                 .has_arg        = optional_argument,
 141                 .val            = 'c' | FIO_CLIENT_FLAG,
 142         },
 143         {
 144                 .name           = (char *) "enghelp",
 145                 .has_arg        = optional_argument,
 146                 .val            = 'i' | FIO_CLIENT_FLAG,
 147         },
 148         {
 149                 .name           = (char *) "showcmd",
 150                 .has_arg        = no_argument,
 151                 .val            = 's' | FIO_CLIENT_FLAG,
 152         },
 153         {
 154                 .name           = (char *) "readonly",
 155                 .has_arg        = no_argument,
 156                 .val            = 'r' | FIO_CLIENT_FLAG,
 157         },
 158         {
 159                 .name           = (char *) "eta",
 160                 .has_arg        = required_argument,
 161                 .val            = 'e' | FIO_CLIENT_FLAG,
 162         },
 163         {
 164                 .name           = (char *) "eta-interval",
 165                 .has_arg        = required_argument,
 166                 .val            = 'O' | FIO_CLIENT_FLAG,
 167         },
 168         {
 169                 .name           = (char *) "eta-newline",
 170                 .has_arg        = required_argument,
 171                 .val            = 'E' | FIO_CLIENT_FLAG,
 172         },
 173         {
 174                 .name           = (char *) "debug",
 175                 .has_arg        = required_argument,
 176                 .val            = 'd' | FIO_CLIENT_FLAG,
 177         },
 178         {
 179                 .name           = (char *) "parse-only",
 180                 .has_arg        = no_argument,
 181                 .val            = 'P' | FIO_CLIENT_FLAG,
 182         },
 183         {
 184                 .name           = (char *) "section",
 185                 .has_arg        = required_argument,
 186                 .val            = 'x' | FIO_CLIENT_FLAG,
 187         },
 188 #ifdef CONFIG_ZLIB
 189         {
 190                 .name           = (char *) "inflate-log",
 191                 .has_arg        = required_argument,
 192                 .val            = 'X' | FIO_CLIENT_FLAG,
 193         },
 194 #endif
 195         {
 196                 .name           = (char *) "alloc-size",
 197                 .has_arg        = required_argument,
 198                 .val            = 'a' | FIO_CLIENT_FLAG,
 199         },
 200         {
 201                 .name           = (char *) "profile",
 202                 .has_arg        = required_argument,
 203                 .val            = 'p' | FIO_CLIENT_FLAG,
 204         },
 205         {
 206                 .name           = (char *) "warnings-fatal",
 207                 .has_arg        = no_argument,
 208                 .val            = 'w' | FIO_CLIENT_FLAG,
 209         },
 210         {
 211                 .name           = (char *) "max-jobs",
 212                 .has_arg        = required_argument,
 213                 .val            = 'j' | FIO_CLIENT_FLAG,
 214         },
 215         {
 216                 .name           = (char *) "terse-version",
 217                 .has_arg        = required_argument,
 218                 .val            = 'V' | FIO_CLIENT_FLAG,
 219         },
 220         {
 221                 .name           = (char *) "server",
 222                 .has_arg        = optional_argument,
 223                 .val            = 'S',
 224         },
 225         {       .name           = (char *) "daemonize",
 226                 .has_arg        = required_argument,
 227                 .val            = 'D',
 228         },
 229         {
 230                 .name           = (char *) "client",
 231                 .has_arg        = required_argument,
 232                 .val            = 'C',
 233         },
 234         {
 235                 .name           = (char *) "remote-config",
 236                 .has_arg        = required_argument,
 237                 .val            = 'R',
 238         },
 239         {
 240                 .name           = (char *) "cpuclock-test",
 241                 .has_arg        = no_argument,
 242                 .val            = 'T',
 243         },
 244         {
 245                 .name           = (char *) "crctest",
 246                 .has_arg        = optional_argument,
 247                 .val            = 'G',
 248         },
 249         {
 250                 .name           = (char *) "memcpytest",
 251                 .has_arg        = optional_argument,
 252                 .val            = 'M',
 253         },
 254         {
 255                 .name           = (char *) "idle-prof",
 256                 .has_arg        = required_argument,
 257                 .val            = 'I',
 258         },
 259         {
 260                 .name           = (char *) "status-interval",
 261                 .has_arg        = required_argument,
 262                 .val            = 'L' | FIO_CLIENT_FLAG,
 263         },
 264         {
 265                 .name           = (char *) "trigger-file",
 266                 .has_arg        = required_argument,
 267                 .val            = 'W',
 268         },
 269         {
 270                 .name           = (char *) "trigger-timeout",
 271                 .has_arg        = required_argument,
 272                 .val            = 'B',
 273         },
 274         {
 275                 .name           = (char *) "trigger",
 276                 .has_arg        = required_argument,
 277                 .val            = 'H',
 278         },
 279         {
 280                 .name           = (char *) "trigger-remote",
 281                 .has_arg        = required_argument,
 282                 .val            = 'J',
 283         },
 284         {
 285                 .name           = (char *) "aux-path",
 286                 .has_arg        = required_argument,
 287                 .val            = 'K',
 288         },
 289         {
 290                 .name           = NULL,
 291         },
 292 };
 293
 294 void free_threads_shm(void)
 295 {
 296         if (threads) {
 297                 void *tp = threads;
 298 #ifndef CONFIG_NO_SHM
 299                 struct shmid_ds sbuf;
 300
 301                 threads = NULL;
 302                 shmdt(tp);
 303                 shmctl(shm_id, IPC_RMID, &sbuf);
 304                 shm_id = -1;
 305 #else
 306                 threads = NULL;
 307                 free(tp);
 308 #endif
 309         }
 310 }
 311
 312 static void free_shm(void)
 313 {
 314         if (threads) {
 315                 flow_exit();
 316                 fio_debug_jobp = NULL;
 317                 fio_warned = NULL;
 318                 free_threads_shm();
 319         }
 320
 321         free(trigger_file);
 322         free(trigger_cmd);
 323         free(trigger_remote_cmd);
 324         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 325
 326         options_free(fio_options, &def_thread.o);
 327         fio_filelock_exit();
 328         file_hash_exit();
 329         scleanup();
 330 }
 331
 332 /*
 333  * The thread area is shared between the main process and the job
 334  * threads/processes. So setup a shared memory segment that will hold
 335  * all the job info. We use the end of the region for keeping track of
 336  * open files across jobs, for file sharing.
 337  */
 338 static int setup_thread_area(void)
 339 {
 340         int i;
 341
 342         if (threads)
 343                 return 0;
 344
 345         /*
 346          * 1024 is too much on some machines, scale max_jobs if
 347          * we get a failure that looks like too large a shm segment
 348          */
 349         do {
 350                 size_t size = max_jobs * sizeof(struct thread_data);
 351
 352                 size += 2 * sizeof(unsigned int);
 353
 354 #ifndef CONFIG_NO_SHM
 355                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 356                 if (shm_id != -1)
 357                         break;
 358                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 359                         perror("shmget");
 360                         break;
 361                 }
 362 #else
 363                 threads = malloc(size);
 364                 if (threads)
 365                         break;
 366 #endif
 367
 368                 max_jobs >>= 1;
 369         } while (max_jobs);
 370
 371 #ifndef CONFIG_NO_SHM
 372         if (shm_id == -1)
 373                 return 1;
 374
 375         threads = shmat(shm_id, NULL, 0);
 376         if (threads == (void *) -1) {
 377                 perror("shmat");
 378                 return 1;
 379         }
 380         if (shm_attach_to_open_removed())
 381                 shmctl(shm_id, IPC_RMID, NULL);
 382 #endif
 383
 384         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 385         for (i = 0; i < max_jobs; i++)
 386                 DRD_IGNORE_VAR(threads[i]);
 387         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
 388         *fio_debug_jobp = -1;
 389         fio_warned = fio_debug_jobp + 1;
 390         *fio_warned = 0;
 391
 392         flow_init();
 393
 394         return 0;
 395 }
 396
 397 static void dump_print_option(struct print_option *p)
 398 {
 399         const char *delim;
 400
 401         if (!strcmp("description", p->name))
 402                 delim = "\"";
 403         else
 404                 delim = "";
 405
 406         log_info("--%s%s", p->name, p->value ? "" : " ");
 407         if (p->value)
 408                 log_info("=%s%s%s ", delim, p->value, delim);
 409 }
 410
 411 static void dump_opt_list(struct thread_data *td)
 412 {
 413         struct flist_head *entry;
 414         struct print_option *p;
 415
 416         if (flist_empty(&td->opt_list))
 417                 return;
 418
 419         flist_for_each(entry, &td->opt_list) {
 420                 p = flist_entry(entry, struct print_option, list);
 421                 dump_print_option(p);
 422         }
 423 }
 424
 425 static void fio_dump_options_free(struct thread_data *td)
 426 {
 427         while (!flist_empty(&td->opt_list)) {
 428                 struct print_option *p;
 429
 430                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 431                 flist_del_init(&p->list);
 432                 free(p->name);
 433                 free(p->value);
 434                 free(p);
 435         }
 436 }
 437
 438 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 439 {
 440         struct flist_head *entry;
 441
 442         if (flist_empty(&src->opt_list))
 443                 return;
 444
 445         flist_for_each(entry, &src->opt_list) {
 446                 struct print_option *srcp, *dstp;
 447
 448                 srcp = flist_entry(entry, struct print_option, list);
 449                 dstp = malloc(sizeof(*dstp));
 450                 dstp->name = strdup(srcp->name);
 451                 if (srcp->value)
 452                         dstp->value = strdup(srcp->value);
 453                 else
 454                         dstp->value = NULL;
 455                 flist_add_tail(&dstp->list, &dst->opt_list);
 456         }
 457 }
 458
 459 /*
 460  * Return a free job structure.
 461  */
 462 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 463                                        bool preserve_eo, const char *jobname)
 464 {
 465         struct thread_data *td;
 466
 467         if (global)
 468                 return &def_thread;
 469         if (setup_thread_area()) {
 470                 log_err("error: failed to setup shm segment\n");
 471                 return NULL;
 472         }
 473         if (thread_number >= max_jobs) {
 474                 log_err("error: maximum number of jobs (%d) reached.\n",
 475                                 max_jobs);
 476                 return NULL;
 477         }
 478
 479         td = &threads[thread_number++];
 480         *td = *parent;
 481
 482         INIT_FLIST_HEAD(&td->opt_list);
 483         if (parent != &def_thread)
 484                 copy_opt_list(td, parent);
 485
 486         td->io_ops = NULL;
 487         td->io_ops_init = 0;
 488         if (!preserve_eo)
 489                 td->eo = NULL;
 490
 491         td->o.uid = td->o.gid = -1U;
 492
 493         dup_files(td, parent);
 494         fio_options_mem_dupe(td);
 495
 496         profile_add_hooks(td);
 497
 498         td->thread_number = thread_number;
 499         td->subjob_number = 0;
 500
 501         if (jobname)
 502                 td->o.name = strdup(jobname);
 503
 504         if (!parent->o.group_reporting || parent == &def_thread)
 505                 stat_number++;
 506
 507         return td;
 508 }
 509
 510 static void put_job(struct thread_data *td)
 511 {
 512         if (td == &def_thread)
 513                 return;
 514
 515         profile_td_exit(td);
 516         flow_exit_job(td);
 517
 518         if (td->error)
 519                 log_info("fio: %s\n", td->verror);
 520
 521         fio_options_free(td);
 522         fio_dump_options_free(td);
 523         if (td->io_ops)
 524                 free_ioengine(td);
 525
 526         if (td->o.name)
 527                 free(td->o.name);
 528
 529         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 530         thread_number--;
 531 }
 532
 533 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 534 {
 535         unsigned long long bs = td->o.min_bs[ddir];
 536
 537         assert(ddir_rw(ddir));
 538
 539         if (td->o.rate[ddir])
 540                 td->rate_bps[ddir] = td->o.rate[ddir];
 541         else
 542                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 543
 544         if (!td->rate_bps[ddir]) {
 545                 log_err("rate lower than supported\n");
 546                 return -1;
 547         }
 548
 549         td->rate_next_io_time[ddir] = 0;
 550         td->rate_io_issue_bytes[ddir] = 0;
 551         td->last_usec[ddir] = 0;
 552         return 0;
 553 }
 554
 555 static int setup_rate(struct thread_data *td)
 556 {
 557         int ret = 0;
 558
 559         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 560                 ret = __setup_rate(td, DDIR_READ);
 561         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 562                 ret |= __setup_rate(td, DDIR_WRITE);
 563         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 564                 ret |= __setup_rate(td, DDIR_TRIM);
 565
 566         return ret;
 567 }
 568
 569 static int fixed_block_size(struct thread_options *o)
 570 {
 571         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 572                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 573                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 574                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 575                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 576 }
 577
 578 /*
 579  * <3 Johannes
 580  */
 581 static unsigned int gcd(unsigned int m, unsigned int n)
 582 {
 583         if (!n)
 584                 return m;
 585
 586         return gcd(n, m % n);
 587 }
 588
 589 /*
 590  * Lazy way of fixing up options that depend on each other. We could also
 591  * define option callback handlers, but this is easier.
 592  */
 593 static int fixup_options(struct thread_data *td)
 594 {
 595         struct thread_options *o = &td->o;
 596         int ret = 0;
 597
 598         if (read_only && (td_write(td) || td_trim(td))) {
 599                 log_err("fio: trim and write operations are not allowed"
 600                          " with the --readonly parameter.\n");
 601                 ret |= 1;
 602         }
 603
 604 #ifndef CONFIG_PSHARED
 605         if (!o->use_thread) {
 606                 log_info("fio: this platform does not support process shared"
 607                          " mutexes, forcing use of threads. Use the 'thread'"
 608                          " option to get rid of this warning.\n");
 609                 o->use_thread = 1;
 610                 ret |= warnings_fatal;
 611         }
 612 #endif
 613
 614         if (o->write_iolog_file && o->read_iolog_file) {
 615                 log_err("fio: read iolog overrides write_iolog\n");
 616                 free(o->write_iolog_file);
 617                 o->write_iolog_file = NULL;
 618                 ret |= warnings_fatal;
 619         }
 620
 621         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
 622                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
 623                 ret |= 1;
 624         }
 625
 626         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
 627                 if (o->zone_size)
 628                         o->zone_mode = ZONE_MODE_STRIDED;
 629                 else
 630                         o->zone_mode = ZONE_MODE_NONE;
 631         }
 632
 633         /*
 634          * Strided zone mode only really works with 1 file.
 635          */
 636         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
 637                 o->zone_mode = ZONE_MODE_NONE;
 638
 639         /*
 640          * If zone_range isn't specified, backward compatibility dictates it
 641          * should be made equal to zone_size.
 642          */
 643         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
 644                 o->zone_range = o->zone_size;
 645
 646         /*
 647          * Reads can do overwrites, we always need to pre-create the file
 648          */
 649         if (td_read(td))
 650                 o->overwrite = 1;
 651
 652         if (!o->min_bs[DDIR_READ])
 653                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 654         if (!o->max_bs[DDIR_READ])
 655                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 656         if (!o->min_bs[DDIR_WRITE])
 657                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 658         if (!o->max_bs[DDIR_WRITE])
 659                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 660         if (!o->min_bs[DDIR_TRIM])
 661                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 662         if (!o->max_bs[DDIR_TRIM])
 663                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 664
 665         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 666         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 667
 668         /*
 669          * For random IO, allow blockalign offset other than min_bs.
 670          */
 671         if (!o->ba[DDIR_READ] || !td_random(td))
 672                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 673         if (!o->ba[DDIR_WRITE] || !td_random(td))
 674                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 675         if (!o->ba[DDIR_TRIM] || !td_random(td))
 676                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 677
 678         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 679             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 680             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 681             !o->norandommap) {
 682                 log_err("fio: Any use of blockalign= turns off randommap\n");
 683                 o->norandommap = 1;
 684                 ret |= warnings_fatal;
 685         }
 686
 687         if (!o->file_size_high)
 688                 o->file_size_high = o->file_size_low;
 689
 690         if (o->start_delay_high) {
 691                 if (!o->start_delay_orig)
 692                         o->start_delay_orig = o->start_delay;
 693                 o->start_delay = rand_between(&td->delay_state,
 694                                                 o->start_delay_orig,
 695                                                 o->start_delay_high);
 696         }
 697
 698         if (o->norandommap && o->verify != VERIFY_NONE
 699             && !fixed_block_size(o))  {
 700                 log_err("fio: norandommap given for variable block sizes, "
 701                         "verify limited\n");
 702                 ret |= warnings_fatal;
 703         }
 704         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 705                 log_err("fio: bs_unaligned may not work with raw io\n");
 706
 707         /*
 708          * thinktime_spin must be less than thinktime
 709          */
 710         if (o->thinktime_spin > o->thinktime)
 711                 o->thinktime_spin = o->thinktime;
 712
 713         /*
 714          * The low water mark cannot be bigger than the iodepth
 715          */
 716         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 717                 o->iodepth_low = o->iodepth;
 718
 719         /*
 720          * If batch number isn't set, default to the same as iodepth
 721          */
 722         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 723                 o->iodepth_batch = o->iodepth;
 724
 725         /*
 726          * If max batch complete number isn't set or set incorrectly,
 727          * default to the same as iodepth_batch_complete_min
 728          */
 729         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 730                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 731
 732         /*
 733          * There's no need to check for in-flight overlapping IOs if the job
 734          * isn't changing data or the maximum iodepth is guaranteed to be 1
 735          */
 736         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 737             (!(td_write(td) || td_trim(td)) || o->iodepth == 1))
 738                 o->serialize_overlap = 0;
 739         /*
 740          * Currently can't check for overlaps in offload mode
 741          */
 742         if (o->serialize_overlap && o->io_submit_mode == IO_MODE_OFFLOAD) {
 743                 log_err("fio: checking for in-flight overlaps when the "
 744                         "io_submit_mode is offload is not supported\n");
 745                 o->serialize_overlap = 0;
 746                 ret |= warnings_fatal;
 747         }
 748
 749         if (o->nr_files > td->files_index)
 750                 o->nr_files = td->files_index;
 751
 752         if (o->open_files > o->nr_files || !o->open_files)
 753                 o->open_files = o->nr_files;
 754
 755         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 756             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 757             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 758             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 759                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 760                 ret |= 1;
 761         }
 762         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 763             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 764             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 765             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 766             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 767             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 768                 log_err("fio: minimum rate exceeds rate\n");
 769                 ret |= 1;
 770         }
 771
 772         if (!o->timeout && o->time_based) {
 773                 log_err("fio: time_based requires a runtime/timeout setting\n");
 774                 o->time_based = 0;
 775                 ret |= warnings_fatal;
 776         }
 777
 778         if (o->fill_device && !o->size)
 779                 o->size = -1ULL;
 780
 781         if (o->verify != VERIFY_NONE) {
 782                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 783                     (o->filename ||
 784                      !(o->unique_filename &&
 785                        strstr(o->filename_format, "$jobname") &&
 786                        strstr(o->filename_format, "$jobnum") &&
 787                        strstr(o->filename_format, "$filenum")))) {
 788                         log_info("fio: multiple writers may overwrite blocks "
 789                                 "that belong to other jobs. This can cause "
 790                                 "verification failures.\n");
 791                         ret |= warnings_fatal;
 792                 }
 793
 794                 /*
 795                  * Warn if verification is requested but no verification of any
 796                  * kind can be started due to time constraints
 797                  */
 798                 if (td_write(td) && o->do_verify && o->timeout &&
 799                     o->time_based && !td_read(td) && !o->verify_backlog) {
 800                         log_info("fio: verification read phase will never "
 801                                  "start because write phase uses all of "
 802                                  "runtime\n");
 803                         ret |= warnings_fatal;
 804                 }
 805
 806                 if (!fio_option_is_set(o, refill_buffers))
 807                         o->refill_buffers = 1;
 808
 809                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 810                     !o->verify_interval)
 811                         o->verify_interval = o->min_bs[DDIR_WRITE];
 812
 813                 /*
 814                  * Verify interval must be smaller or equal to the
 815                  * write size.
 816                  */
 817                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 818                         o->verify_interval = o->min_bs[DDIR_WRITE];
 819                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 820                         o->verify_interval = o->min_bs[DDIR_READ];
 821
 822                 /*
 823                  * Verify interval must be a factor of both min and max
 824                  * write size
 825                  */
 826                 if (!o->verify_interval ||
 827                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 828                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 829                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 830                                                         o->max_bs[DDIR_WRITE]);
 831         }
 832
 833         if (o->pre_read) {
 834                 if (o->invalidate_cache)
 835                         o->invalidate_cache = 0;
 836                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 837                         log_info("fio: cannot pre-read files with an IO engine"
 838                                  " that isn't seekable. Pre-read disabled.\n");
 839                         ret |= warnings_fatal;
 840                 }
 841         }
 842
 843         if (o->unit_base == N2S_NONE) {
 844                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 845                         o->unit_base = N2S_BITPERSEC;
 846                 else
 847                         o->unit_base = N2S_BYTEPERSEC;
 848         }
 849
 850 #ifndef FIO_HAVE_ANY_FALLOCATE
 851         /* Platform doesn't support any fallocate so force it to none */
 852         o->fallocate_mode = FIO_FALLOCATE_NONE;
 853 #endif
 854
 855 #ifndef CONFIG_FDATASYNC
 856         if (o->fdatasync_blocks) {
 857                 log_info("fio: this platform does not support fdatasync()"
 858                          " falling back to using fsync().  Use the 'fsync'"
 859                          " option instead of 'fdatasync' to get rid of"
 860                          " this warning\n");
 861                 o->fsync_blocks = o->fdatasync_blocks;
 862                 o->fdatasync_blocks = 0;
 863                 ret |= warnings_fatal;
 864         }
 865 #endif
 866
 867 #ifdef WIN32
 868         /*
 869          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 870          * so fail if we're passed those flags
 871          */
 872         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 873                 log_err("fio: Windows does not support direct or non-buffered io with"
 874                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 875                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 876                 ret |= 1;
 877         }
 878 #endif
 879
 880         /*
 881          * For fully compressible data, just zero them at init time.
 882          * It's faster than repeatedly filling it. For non-zero
 883          * compression, we should have refill_buffers set. Set it, unless
 884          * the job file already changed it.
 885          */
 886         if (o->compress_percentage) {
 887                 if (o->compress_percentage == 100) {
 888                         o->zero_buffers = 1;
 889                         o->compress_percentage = 0;
 890                 } else if (!fio_option_is_set(o, refill_buffers)) {
 891                         o->refill_buffers = 1;
 892                         td->flags |= TD_F_REFILL_BUFFERS;
 893                 }
 894         }
 895
 896         /*
 897          * Using a non-uniform random distribution excludes usage of
 898          * a random map
 899          */
 900         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 901                 o->norandommap = 1;
 902
 903         /*
 904          * If size is set but less than the min block size, complain
 905          */
 906         if (o->size && o->size < td_min_bs(td)) {
 907                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 908                         (unsigned long long) o->size, td_min_bs(td));
 909                 ret |= 1;
 910         }
 911
 912         /*
 913          * O_ATOMIC implies O_DIRECT
 914          */
 915         if (o->oatomic)
 916                 o->odirect = 1;
 917
 918         /*
 919          * If randseed is set, that overrides randrepeat
 920          */
 921         if (fio_option_is_set(o, rand_seed))
 922                 o->rand_repeatable = 0;
 923
 924         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 925                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 926                 ret |= 1;
 927         }
 928
 929         if (fio_option_is_set(o, gtod_cpu)) {
 930                 fio_gtod_init();
 931                 fio_gtod_set_cpu(o->gtod_cpu);
 932                 fio_gtod_offload = 1;
 933         }
 934
 935         td->loops = o->loops;
 936         if (!td->loops)
 937                 td->loops = 1;
 938
 939         if (o->block_error_hist && o->nr_files != 1) {
 940                 log_err("fio: block error histogram only available "
 941                         "with a single file per job, but %d files "
 942                         "provided\n", o->nr_files);
 943                 ret |= 1;
 944         }
 945
 946         if (fio_option_is_set(o, clat_percentiles) &&
 947             !fio_option_is_set(o, lat_percentiles)) {
 948                 o->lat_percentiles = !o->clat_percentiles;
 949         } else if (fio_option_is_set(o, lat_percentiles) &&
 950                    !fio_option_is_set(o, clat_percentiles)) {
 951                 o->clat_percentiles = !o->lat_percentiles;
 952         } else if (fio_option_is_set(o, lat_percentiles) &&
 953                    fio_option_is_set(o, clat_percentiles) &&
 954                    o->lat_percentiles && o->clat_percentiles) {
 955                 log_err("fio: lat_percentiles and clat_percentiles are "
 956                         "mutually exclusive\n");
 957                 ret |= 1;
 958         }
 959
 960         if (o->disable_lat)
 961                 o->lat_percentiles = 0;
 962         if (o->disable_clat)
 963                 o->clat_percentiles = 0;
 964
 965         /*
 966          * Fix these up to be nsec internally
 967          */
 968         o->max_latency *= 1000ULL;
 969         o->latency_target *= 1000ULL;
 970         o->latency_window *= 1000ULL;
 971
 972         return ret;
 973 }
 974
 975 static void init_rand_file_service(struct thread_data *td)
 976 {
 977         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 978         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 979
 980         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 981                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 982                 zipf_disable_hash(&td->next_file_zipf);
 983         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 984                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 985                 zipf_disable_hash(&td->next_file_zipf);
 986         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 987                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 988                 gauss_disable_hash(&td->next_file_gauss);
 989         }
 990 }
 991
 992 void td_fill_verify_state_seed(struct thread_data *td)
 993 {
 994         bool use64;
 995
 996         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 997                 use64 = true;
 998         else
 999                 use64 = false;
1000
1001         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
1002                 use64);
1003 }
1004
1005 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
1006 {
1007         unsigned int read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
1008         unsigned int write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
1009         unsigned int trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
1010         int i;
1011
1012         /*
1013          * trimwrite is special in that we need to generate the same
1014          * offsets to get the "write after trim" effect. If we are
1015          * using bssplit to set buffer length distributions, ensure that
1016          * we seed the trim and write generators identically. Ditto for
1017          * verify, read and writes must have the same seed, if we are doing
1018          * read verify.
1019          */
1020         if (td->o.verify != VERIFY_NONE)
1021                 write_seed = read_seed;
1022         if (td_trimwrite(td))
1023                 trim_seed = write_seed;
1024         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1025         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1026         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1027
1028         td_fill_verify_state_seed(td);
1029         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1030
1031         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1032                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1033         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1034                 init_rand_file_service(td);
1035
1036         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1037         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1038         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1039         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1040         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1041         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1042         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1043         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1044
1045         if (!td_random(td))
1046                 return;
1047
1048         if (td->o.rand_repeatable)
1049                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1050
1051         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1052
1053         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1054                 struct frand_state *s = &td->seq_rand_state[i];
1055
1056                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1057         }
1058 }
1059
1060 void td_fill_rand_seeds(struct thread_data *td)
1061 {
1062         bool use64;
1063
1064         if (td->o.allrand_repeatable) {
1065                 unsigned int i;
1066
1067                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1068                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1069                                 + i;
1070         }
1071
1072         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1073                 use64 = true;
1074         else
1075                 use64 = false;
1076
1077         td_fill_rand_seeds_internal(td, use64);
1078
1079         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1080         frand_copy(&td->buf_state_prev, &td->buf_state);
1081 }
1082
1083 /*
1084  * Initializes the ioengine configured for a job, if it has not been done so
1085  * already.
1086  */
1087 int ioengine_load(struct thread_data *td)
1088 {
1089         if (!td->o.ioengine) {
1090                 log_err("fio: internal fault, no IO engine specified\n");
1091                 return 1;
1092         }
1093
1094         if (td->io_ops) {
1095                 struct ioengine_ops *ops;
1096                 void *dlhandle;
1097
1098                 /* An engine is loaded, but the requested ioengine
1099                  * may have changed.
1100                  */
1101                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1102                         /* The right engine is already loaded */
1103                         return 0;
1104                 }
1105
1106                 /*
1107                  * Name of file and engine may be different, load ops
1108                  * for this name and see if they match. If they do, then
1109                  * the engine is unchanged.
1110                  */
1111                 dlhandle = td->io_ops_dlhandle;
1112                 ops = load_ioengine(td);
1113                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1114                         if (dlhandle)
1115                                 dlclose(dlhandle);
1116                         return 0;
1117                 }
1118
1119                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1120                         dlclose(dlhandle);
1121
1122                 /* Unload the old engine. */
1123                 free_ioengine(td);
1124         }
1125
1126         td->io_ops = load_ioengine(td);
1127         if (!td->io_ops) {
1128                 log_err("fio: failed to load engine\n");
1129                 return 1;
1130         }
1131
1132         if (td->io_ops->option_struct_size && td->io_ops->options) {
1133                 /*
1134                  * In cases where td->eo is set, clone it for a child thread.
1135                  * This requires that the parent thread has the same ioengine,
1136                  * but that requirement must be enforced by the code which
1137                  * cloned the thread.
1138                  */
1139                 void *origeo = td->eo;
1140                 /*
1141                  * Otherwise use the default thread options.
1142                  */
1143                 if (!origeo && td != &def_thread && def_thread.eo &&
1144                     def_thread.io_ops->options == td->io_ops->options)
1145                         origeo = def_thread.eo;
1146
1147                 options_init(td->io_ops->options);
1148                 td->eo = malloc(td->io_ops->option_struct_size);
1149                 /*
1150                  * Use the default thread as an option template if this uses the
1151                  * same options structure and there are non-default options
1152                  * used.
1153                  */
1154                 if (origeo) {
1155                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1156                         options_mem_dupe(td->io_ops->options, td->eo);
1157                 } else {
1158                         memset(td->eo, 0, td->io_ops->option_struct_size);
1159                         fill_default_options(td->eo, td->io_ops->options);
1160                 }
1161                 *(struct thread_data **)td->eo = td;
1162         }
1163
1164         if (td->o.odirect)
1165                 td->io_ops->flags |= FIO_RAWIO;
1166
1167         td_set_ioengine_flags(td);
1168         return 0;
1169 }
1170
1171 static void init_flags(struct thread_data *td)
1172 {
1173         struct thread_options *o = &td->o;
1174         int i;
1175
1176         if (o->verify_backlog)
1177                 td->flags |= TD_F_VER_BACKLOG;
1178         if (o->trim_backlog)
1179                 td->flags |= TD_F_TRIM_BACKLOG;
1180         if (o->read_iolog_file)
1181                 td->flags |= TD_F_READ_IOLOG;
1182         if (o->refill_buffers)
1183                 td->flags |= TD_F_REFILL_BUFFERS;
1184         /*
1185          * Always scramble buffers if asked to
1186          */
1187         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1188                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1189         /*
1190          * But also scramble buffers, unless we were explicitly asked
1191          * to zero them.
1192          */
1193         if (o->scramble_buffers && !(o->zero_buffers &&
1194             fio_option_is_set(o, zero_buffers)))
1195                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1196         if (o->verify != VERIFY_NONE)
1197                 td->flags |= TD_F_DO_VERIFY;
1198
1199         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1200                 td->flags |= TD_F_NEED_LOCK;
1201
1202         if (o->mem_type == MEM_CUDA_MALLOC)
1203                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1204
1205         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1206                 if (option_check_rate(td, i)) {
1207                         td->flags |= TD_F_CHECK_RATE;
1208                         break;
1209                 }
1210         }
1211 }
1212
1213 static int setup_random_seeds(struct thread_data *td)
1214 {
1215         unsigned long seed;
1216         unsigned int i;
1217
1218         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1219                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1220                 if (!ret)
1221                         td_fill_rand_seeds(td);
1222                 return ret;
1223         }
1224
1225         seed = td->o.rand_seed;
1226         for (i = 0; i < 4; i++)
1227                 seed *= 0x9e370001UL;
1228
1229         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1230                 td->rand_seeds[i] = seed * td->thread_number + i;
1231                 seed *= 0x9e370001UL;
1232         }
1233
1234         td_fill_rand_seeds(td);
1235         return 0;
1236 }
1237
1238 enum {
1239         FPRE_NONE = 0,
1240         FPRE_JOBNAME,
1241         FPRE_JOBNUM,
1242         FPRE_FILENUM
1243 };
1244
1245 static struct fpre_keyword {
1246         const char *keyword;
1247         size_t strlen;
1248         int key;
1249 } fpre_keywords[] = {
1250         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1251         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1252         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1253         { .keyword = NULL, },
1254         };
1255
1256 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1257                            const char *jobname, int jobnum, int filenum)
1258 {
1259         struct fpre_keyword *f;
1260         char copy[PATH_MAX];
1261         size_t dst_left = PATH_MAX - 1;
1262
1263         if (!o->filename_format || !strlen(o->filename_format)) {
1264                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1265                 return buf;
1266         }
1267
1268         for (f = &fpre_keywords[0]; f->keyword; f++)
1269                 f->strlen = strlen(f->keyword);
1270
1271         buf[buf_size - 1] = '\0';
1272         strncpy(buf, o->filename_format, buf_size - 1);
1273
1274         memset(copy, 0, sizeof(copy));
1275         for (f = &fpre_keywords[0]; f->keyword; f++) {
1276                 do {
1277                         size_t pre_len, post_start = 0;
1278                         char *str, *dst = copy;
1279
1280                         str = strcasestr(buf, f->keyword);
1281                         if (!str)
1282                                 break;
1283
1284                         pre_len = str - buf;
1285                         if (strlen(str) != f->strlen)
1286                                 post_start = pre_len + f->strlen;
1287
1288                         if (pre_len) {
1289                                 strncpy(dst, buf, pre_len);
1290                                 dst += pre_len;
1291                                 dst_left -= pre_len;
1292                         }
1293
1294                         switch (f->key) {
1295                         case FPRE_JOBNAME: {
1296                                 int ret;
1297
1298                                 ret = snprintf(dst, dst_left, "%s", jobname);
1299                                 if (ret < 0)
1300                                         break;
1301                                 else if (ret > dst_left) {
1302                                         log_err("fio: truncated filename\n");
1303                                         dst += dst_left;
1304                                         dst_left = 0;
1305                                 } else {
1306                                         dst += ret;
1307                                         dst_left -= ret;
1308                                 }
1309                                 break;
1310                                 }
1311                         case FPRE_JOBNUM: {
1312                                 int ret;
1313
1314                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1315                                 if (ret < 0)
1316                                         break;
1317                                 else if (ret > dst_left) {
1318                                         log_err("fio: truncated filename\n");
1319                                         dst += dst_left;
1320                                         dst_left = 0;
1321                                 } else {
1322                                         dst += ret;
1323                                         dst_left -= ret;
1324                                 }
1325                                 break;
1326                                 }
1327                         case FPRE_FILENUM: {
1328                                 int ret;
1329
1330                                 ret = snprintf(dst, dst_left, "%d", filenum);
1331                                 if (ret < 0)
1332                                         break;
1333                                 else if (ret > dst_left) {
1334                                         log_err("fio: truncated filename\n");
1335                                         dst += dst_left;
1336                                         dst_left = 0;
1337                                 } else {
1338                                         dst += ret;
1339                                         dst_left -= ret;
1340                                 }
1341                                 break;
1342                                 }
1343                         default:
1344                                 assert(0);
1345                                 break;
1346                         }
1347
1348                         if (post_start)
1349                                 strncpy(dst, buf + post_start, dst_left);
1350
1351                         strncpy(buf, copy, buf_size - 1);
1352                 } while (1);
1353         }
1354
1355         return buf;
1356 }
1357
1358 bool parse_dryrun(void)
1359 {
1360         return dump_cmdline || parse_only;
1361 }
1362
1363 static void gen_log_name(char *name, size_t size, const char *logtype,
1364                          const char *logname, unsigned int num,
1365                          const char *suf, int per_job)
1366 {
1367         if (per_job)
1368                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1369         else
1370                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1371 }
1372
1373 static int check_waitees(char *waitee)
1374 {
1375         struct thread_data *td;
1376         int i, ret = 0;
1377
1378         for_each_td(td, i) {
1379                 if (td->subjob_number)
1380                         continue;
1381
1382                 ret += !strcmp(td->o.name, waitee);
1383         }
1384
1385         return ret;
1386 }
1387
1388 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1389 {
1390         int nw;
1391
1392         if (!o->wait_for)
1393                 return true;
1394
1395         if (!strcmp(jobname, o->wait_for)) {
1396                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1397                                 jobname, o->wait_for);
1398                 return false;
1399         }
1400
1401         if (!(nw = check_waitees(o->wait_for))) {
1402                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1403                 return false;
1404         }
1405
1406         if (nw > 1) {
1407                 log_err("%s: multiple waitees %s found,\n"
1408                         "please avoid duplicates when using wait_for option.\n",
1409                                 jobname, o->wait_for);
1410                 return false;
1411         }
1412
1413         return true;
1414 }
1415
1416 /*
1417  * Adds a job to the list of things todo. Sanitizes the various options
1418  * to make sure we don't have conflicts, and initializes various
1419  * members of td.
1420  */
1421 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1422                    int recursed, int client_type)
1423 {
1424         unsigned int i;
1425         char fname[PATH_MAX];
1426         int numjobs, file_alloced;
1427         struct thread_options *o = &td->o;
1428         char logname[PATH_MAX + 32];
1429
1430         /*
1431          * the def_thread is just for options, it's not a real job
1432          */
1433         if (td == &def_thread)
1434                 return 0;
1435
1436         init_flags(td);
1437
1438         /*
1439          * if we are just dumping the output command line, don't add the job
1440          */
1441         if (parse_dryrun()) {
1442                 put_job(td);
1443                 return 0;
1444         }
1445
1446         td->client_type = client_type;
1447
1448         if (profile_td_init(td))
1449                 goto err;
1450
1451         if (ioengine_load(td))
1452                 goto err;
1453
1454         file_alloced = 0;
1455         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1456                 file_alloced = 1;
1457
1458                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1459                         add_file(td, jobname, job_add_num, 0);
1460                 else {
1461                         for (i = 0; i < o->nr_files; i++)
1462                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1463                 }
1464         }
1465
1466         if (setup_random_seeds(td)) {
1467                 td_verror(td, errno, "setup_random_seeds");
1468                 goto err;
1469         }
1470
1471         if (fixup_options(td))
1472                 goto err;
1473
1474         /*
1475          * Belongs to fixup_options, but o->name is not necessarily set as yet
1476          */
1477         if (!wait_for_ok(jobname, o))
1478                 goto err;
1479
1480         flow_init_job(td);
1481
1482         /*
1483          * IO engines only need this for option callbacks, and the address may
1484          * change in subprocesses.
1485          */
1486         if (td->eo)
1487                 *(struct thread_data **)td->eo = NULL;
1488
1489         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1490                 struct fio_file *f;
1491
1492                 for_each_file(td, f, i)
1493                         f->real_file_size = -1ULL;
1494         }
1495
1496         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1497
1498         td->ts.clat_percentiles = o->clat_percentiles;
1499         td->ts.lat_percentiles = o->lat_percentiles;
1500         td->ts.percentile_precision = o->percentile_precision;
1501         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1502         td->ts.sig_figs = o->sig_figs;
1503
1504         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1505                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1506                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1507                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1508                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1509                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1510         }
1511         td->ts.sync_stat.min_val = ULONG_MAX;
1512         td->ddir_seq_nr = o->ddir_seq_nr;
1513
1514         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1515                 prev_group_jobs = 0;
1516                 groupid++;
1517                 if (groupid == INT_MAX) {
1518                         log_err("fio: too many groups defined\n");
1519                         goto err;
1520                 }
1521         }
1522
1523         td->groupid = groupid;
1524         prev_group_jobs++;
1525
1526         if (setup_rate(td))
1527                 goto err;
1528
1529         if (o->write_lat_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_LAT,
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->lat_log_file ? o->lat_log_file : o->name;
1541                 const char *suf;
1542
1543                 if (p.log_gz_store)
1544                         suf = "log.fz";
1545                 else
1546                         suf = "log";
1547
1548                 gen_log_name(logname, sizeof(logname), "lat", pre,
1549                                 td->thread_number, suf, o->per_job_logs);
1550                 setup_log(&td->lat_log, &p, logname);
1551
1552                 gen_log_name(logname, sizeof(logname), "slat", pre,
1553                                 td->thread_number, suf, o->per_job_logs);
1554                 setup_log(&td->slat_log, &p, logname);
1555
1556                 gen_log_name(logname, sizeof(logname), "clat", pre,
1557                                 td->thread_number, suf, o->per_job_logs);
1558                 setup_log(&td->clat_log, &p, logname);
1559         }
1560
1561         if (o->write_hist_log) {
1562                 struct log_params p = {
1563                         .td = td,
1564                         .avg_msec = o->log_avg_msec,
1565                         .hist_msec = o->log_hist_msec,
1566                         .hist_coarseness = o->log_hist_coarseness,
1567                         .log_type = IO_LOG_TYPE_HIST,
1568                         .log_offset = o->log_offset,
1569                         .log_gz = o->log_gz,
1570                         .log_gz_store = o->log_gz_store,
1571                 };
1572                 const char *pre = o->hist_log_file ? o->hist_log_file : o->name;
1573                 const char *suf;
1574
1575 #ifndef CONFIG_ZLIB
1576                 if (td->client_type) {
1577                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1578                         goto err;
1579                 }
1580 #endif
1581
1582                 if (p.log_gz_store)
1583                         suf = "log.fz";
1584                 else
1585                         suf = "log";
1586
1587                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1588                                 td->thread_number, suf, o->per_job_logs);
1589                 setup_log(&td->clat_hist_log, &p, logname);
1590         }
1591
1592         if (o->write_bw_log) {
1593                 struct log_params p = {
1594                         .td = td,
1595                         .avg_msec = o->log_avg_msec,
1596                         .hist_msec = o->log_hist_msec,
1597                         .hist_coarseness = o->log_hist_coarseness,
1598                         .log_type = IO_LOG_TYPE_BW,
1599                         .log_offset = o->log_offset,
1600                         .log_gz = o->log_gz,
1601                         .log_gz_store = o->log_gz_store,
1602                 };
1603                 const char *pre = o->bw_log_file ? o->bw_log_file : o->name;
1604                 const char *suf;
1605
1606                 if (fio_option_is_set(o, bw_avg_time))
1607                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1608                 else
1609                         o->bw_avg_time = p.avg_msec;
1610
1611                 p.hist_msec = o->log_hist_msec;
1612                 p.hist_coarseness = o->log_hist_coarseness;
1613
1614                 if (p.log_gz_store)
1615                         suf = "log.fz";
1616                 else
1617                         suf = "log";
1618
1619                 gen_log_name(logname, sizeof(logname), "bw", pre,
1620                                 td->thread_number, suf, o->per_job_logs);
1621                 setup_log(&td->bw_log, &p, logname);
1622         }
1623         if (o->write_iops_log) {
1624                 struct log_params p = {
1625                         .td = td,
1626                         .avg_msec = o->log_avg_msec,
1627                         .hist_msec = o->log_hist_msec,
1628                         .hist_coarseness = o->log_hist_coarseness,
1629                         .log_type = IO_LOG_TYPE_IOPS,
1630                         .log_offset = o->log_offset,
1631                         .log_gz = o->log_gz,
1632                         .log_gz_store = o->log_gz_store,
1633                 };
1634                 const char *pre = o->iops_log_file ? o->iops_log_file : o->name;
1635                 const char *suf;
1636
1637                 if (fio_option_is_set(o, iops_avg_time))
1638                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1639                 else
1640                         o->iops_avg_time = p.avg_msec;
1641
1642                 p.hist_msec = o->log_hist_msec;
1643                 p.hist_coarseness = o->log_hist_coarseness;
1644
1645                 if (p.log_gz_store)
1646                         suf = "log.fz";
1647                 else
1648                         suf = "log";
1649
1650                 gen_log_name(logname, sizeof(logname), "iops", pre,
1651                                 td->thread_number, suf, o->per_job_logs);
1652                 setup_log(&td->iops_log, &p, logname);
1653         }
1654
1655         if (!o->name)
1656                 o->name = strdup(jobname);
1657
1658         if (output_format & FIO_OUTPUT_NORMAL) {
1659                 if (!job_add_num) {
1660                         if (is_backend && !recursed)
1661                                 fio_server_send_add_job(td);
1662
1663                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1664                                 char *c1, *c2, *c3, *c4;
1665                                 char *c5 = NULL, *c6 = NULL;
1666                                 int i2p = is_power_of_2(o->kb_base);
1667
1668                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1669                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1670                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1671                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1672
1673                                 if (!o->bs_is_seq_rand) {
1674                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1675                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1676                                 }
1677
1678                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1679                                                         td->groupid,
1680                                                         ddir_str(o->td_ddir));
1681
1682                                 if (o->bs_is_seq_rand)
1683                                         log_info("bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1684                                                         c1, c2, c3, c4);
1685                                 else
1686                                         log_info("bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1687                                                         c1, c2, c3, c4, c5, c6);
1688
1689                                 log_info("ioengine=%s, iodepth=%u\n",
1690                                                 td->io_ops->name, o->iodepth);
1691
1692                                 free(c1);
1693                                 free(c2);
1694                                 free(c3);
1695                                 free(c4);
1696                                 free(c5);
1697                                 free(c6);
1698                         }
1699                 } else if (job_add_num == 1)
1700                         log_info("...\n");
1701         }
1702
1703         if (td_steadystate_init(td))
1704                 goto err;
1705
1706         /*
1707          * recurse add identical jobs, clear numjobs and stonewall options
1708          * as they don't apply to sub-jobs
1709          */
1710         numjobs = o->numjobs;
1711         while (--numjobs) {
1712                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1713
1714                 if (!td_new)
1715                         goto err;
1716
1717                 td_new->o.numjobs = 1;
1718                 td_new->o.stonewall = 0;
1719                 td_new->o.new_group = 0;
1720                 td_new->subjob_number = numjobs;
1721                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1722                 td_new->o.ss_limit = o->ss_limit;
1723
1724                 if (file_alloced) {
1725                         if (td_new->files) {
1726                                 struct fio_file *f;
1727                                 for_each_file(td_new, f, i) {
1728                                         if (f->file_name)
1729                                                 sfree(f->file_name);
1730                                         sfree(f);
1731                                 }
1732                                 free(td_new->files);
1733                                 td_new->files = NULL;
1734                         }
1735                         td_new->files_index = 0;
1736                         td_new->files_size = 0;
1737                         if (td_new->o.filename) {
1738                                 free(td_new->o.filename);
1739                                 td_new->o.filename = NULL;
1740                         }
1741                 }
1742
1743                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1744                         goto err;
1745         }
1746
1747         return 0;
1748 err:
1749         put_job(td);
1750         return -1;
1751 }
1752
1753 /*
1754  * Parse as if 'o' was a command line
1755  */
1756 void add_job_opts(const char **o, int client_type)
1757 {
1758         struct thread_data *td, *td_parent;
1759         int i, in_global = 1;
1760         char jobname[32];
1761
1762         i = 0;
1763         td_parent = td = NULL;
1764         while (o[i]) {
1765                 if (!strncmp(o[i], "name", 4)) {
1766                         in_global = 0;
1767                         if (td)
1768                                 add_job(td, jobname, 0, 0, client_type);
1769                         td = NULL;
1770                         sprintf(jobname, "%s", o[i] + 5);
1771                 }
1772                 if (in_global && !td_parent)
1773                         td_parent = get_new_job(true, &def_thread, false, jobname);
1774                 else if (!in_global && !td) {
1775                         if (!td_parent)
1776                                 td_parent = &def_thread;
1777                         td = get_new_job(false, td_parent, false, jobname);
1778                 }
1779                 if (in_global)
1780                         fio_options_parse(td_parent, (char **) &o[i], 1);
1781                 else
1782                         fio_options_parse(td, (char **) &o[i], 1);
1783                 i++;
1784         }
1785
1786         if (td)
1787                 add_job(td, jobname, 0, 0, client_type);
1788 }
1789
1790 static int skip_this_section(const char *name)
1791 {
1792         int i;
1793
1794         if (!nr_job_sections)
1795                 return 0;
1796         if (!strncmp(name, "global", 6))
1797                 return 0;
1798
1799         for (i = 0; i < nr_job_sections; i++)
1800                 if (!strcmp(job_sections[i], name))
1801                         return 0;
1802
1803         return 1;
1804 }
1805
1806 static int is_empty_or_comment(char *line)
1807 {
1808         unsigned int i;
1809
1810         for (i = 0; i < strlen(line); i++) {
1811                 if (line[i] == ';')
1812                         return 1;
1813                 if (line[i] == '#')
1814                         return 1;
1815                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1816                         return 0;
1817         }
1818
1819         return 1;
1820 }
1821
1822 /*
1823  * This is our [ini] type file parser.
1824  */
1825 static int __parse_jobs_ini(struct thread_data *td,
1826                 char *file, int is_buf, int stonewall_flag, int type,
1827                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1828 {
1829         bool global = false;
1830         char *string;
1831         FILE *f;
1832         char *p;
1833         int ret = 0, stonewall;
1834         int first_sect = 1;
1835         int skip_fgets = 0;
1836         int inside_skip = 0;
1837         char **opts;
1838         int i, alloc_opts, num_opts;
1839
1840         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1841         assert(td || !nested);
1842
1843         if (is_buf)
1844                 f = NULL;
1845         else {
1846                 if (!strcmp(file, "-"))
1847                         f = stdin;
1848                 else
1849                         f = fopen(file, "r");
1850
1851                 if (!f) {
1852                         int __err = errno;
1853
1854                         log_err("fio: unable to open '%s' job file\n", file);
1855                         if (td)
1856                                 td_verror(td, __err, "job file open");
1857                         return 1;
1858                 }
1859         }
1860
1861         string = malloc(4096);
1862
1863         /*
1864          * it's really 256 + small bit, 280 should suffice
1865          */
1866         if (!nested) {
1867                 name = malloc(280);
1868                 memset(name, 0, 280);
1869         }
1870
1871         opts = NULL;
1872         if (nested && popts) {
1873                 opts = *popts;
1874                 alloc_opts = *aopts;
1875                 num_opts = *nopts;
1876         }
1877
1878         if (!opts) {
1879                 alloc_opts = 8;
1880                 opts = malloc(sizeof(char *) * alloc_opts);
1881                 num_opts = 0;
1882         }
1883
1884         stonewall = stonewall_flag;
1885         do {
1886                 /*
1887                  * if skip_fgets is set, we already have loaded a line we
1888                  * haven't handled.
1889                  */
1890                 if (!skip_fgets) {
1891                         if (is_buf)
1892                                 p = strsep(&file, "\n");
1893                         else
1894                                 p = fgets(string, 4096, f);
1895                         if (!p)
1896                                 break;
1897                 }
1898
1899                 skip_fgets = 0;
1900                 strip_blank_front(&p);
1901                 strip_blank_end(p);
1902
1903                 dprint(FD_PARSE, "%s\n", p);
1904                 if (is_empty_or_comment(p))
1905                         continue;
1906
1907                 if (!nested) {
1908                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1909                                 if (inside_skip)
1910                                         continue;
1911
1912                                 log_err("fio: option <%s> outside of "
1913                                         "[] job section\n", p);
1914                                 ret = 1;
1915                                 break;
1916                         }
1917
1918                         name[strlen(name) - 1] = '\0';
1919
1920                         if (skip_this_section(name)) {
1921                                 inside_skip = 1;
1922                                 continue;
1923                         } else
1924                                 inside_skip = 0;
1925
1926                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1927
1928                         global = !strncmp(name, "global", 6);
1929
1930                         if (dump_cmdline) {
1931                                 if (first_sect)
1932                                         log_info("fio ");
1933                                 if (!global)
1934                                         log_info("--name=%s ", name);
1935                                 first_sect = 0;
1936                         }
1937
1938                         td = get_new_job(global, &def_thread, false, name);
1939                         if (!td) {
1940                                 ret = 1;
1941                                 break;
1942                         }
1943
1944                         /*
1945                          * Separate multiple job files by a stonewall
1946                          */
1947                         if (!global && stonewall) {
1948                                 td->o.stonewall = stonewall;
1949                                 stonewall = 0;
1950                         }
1951
1952                         num_opts = 0;
1953                         memset(opts, 0, alloc_opts * sizeof(char *));
1954                 }
1955                 else
1956                         skip_fgets = 1;
1957
1958                 while (1) {
1959                         if (!skip_fgets) {
1960                                 if (is_buf)
1961                                         p = strsep(&file, "\n");
1962                                 else
1963                                         p = fgets(string, 4096, f);
1964                                 if (!p)
1965                                         break;
1966                                 dprint(FD_PARSE, "%s", p);
1967                         }
1968                         else
1969                                 skip_fgets = 0;
1970
1971                         if (is_empty_or_comment(p))
1972                                 continue;
1973
1974                         strip_blank_front(&p);
1975
1976                         /*
1977                          * new section, break out and make sure we don't
1978                          * fgets() a new line at the top.
1979                          */
1980                         if (p[0] == '[') {
1981                                 if (nested) {
1982                                         log_err("No new sections in included files\n");
1983                                         ret = 1;
1984                                         goto out;
1985                                 }
1986
1987                                 skip_fgets = 1;
1988                                 break;
1989                         }
1990
1991                         strip_blank_end(p);
1992
1993                         if (!strncmp(p, "include", strlen("include"))) {
1994                                 char *filename = p + strlen("include") + 1,
1995                                         *ts, *full_fn = NULL;
1996
1997                                 /*
1998                                  * Allow for the include filename
1999                                  * specification to be relative.
2000                                  */
2001                                 if (access(filename, F_OK) &&
2002                                     (ts = strrchr(file, '/'))) {
2003                                         int len = ts - file +
2004                                                 strlen(filename) + 2;
2005
2006                                         if (!(full_fn = calloc(1, len))) {
2007                                                 ret = ENOMEM;
2008                                                 break;
2009                                         }
2010
2011                                         strncpy(full_fn,
2012                                                 file, (ts - file) + 1);
2013                                         strncpy(full_fn + (ts - file) + 1,
2014                                                 filename, strlen(filename));
2015                                         full_fn[len - 1] = 0;
2016                                         filename = full_fn;
2017                                 }
2018
2019                                 ret = __parse_jobs_ini(td, filename, is_buf,
2020                                                        stonewall_flag, type, 1,
2021                                                        name, &opts,
2022                                                        &alloc_opts, &num_opts);
2023
2024                                 if (ret) {
2025                                         log_err("Error %d while parsing "
2026                                                 "include file %s\n",
2027                                                 ret, filename);
2028                                 }
2029
2030                                 if (full_fn)
2031                                         free(full_fn);
2032
2033                                 if (ret)
2034                                         break;
2035
2036                                 continue;
2037                         }
2038
2039                         if (num_opts == alloc_opts) {
2040                                 alloc_opts <<= 1;
2041                                 opts = realloc(opts,
2042                                                 alloc_opts * sizeof(char *));
2043                         }
2044
2045                         opts[num_opts] = strdup(p);
2046                         num_opts++;
2047                 }
2048
2049                 if (nested) {
2050                         *popts = opts;
2051                         *aopts = alloc_opts;
2052                         *nopts = num_opts;
2053                         goto out;
2054                 }
2055
2056                 ret = fio_options_parse(td, opts, num_opts);
2057                 if (!ret) {
2058                         if (dump_cmdline)
2059                                 dump_opt_list(td);
2060
2061                         ret = add_job(td, name, 0, 0, type);
2062                 } else {
2063                         log_err("fio: job %s dropped\n", name);
2064                         put_job(td);
2065                 }
2066
2067                 for (i = 0; i < num_opts; i++)
2068                         free(opts[i]);
2069                 num_opts = 0;
2070         } while (!ret);
2071
2072         if (dump_cmdline)
2073                 log_info("\n");
2074
2075         i = 0;
2076         while (i < nr_job_sections) {
2077                 free(job_sections[i]);
2078                 i++;
2079         }
2080
2081         free(opts);
2082 out:
2083         free(string);
2084         if (!nested)
2085                 free(name);
2086         if (!is_buf && f != stdin)
2087                 fclose(f);
2088         return ret;
2089 }
2090
2091 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2092 {
2093         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2094                         0, NULL, NULL, NULL, NULL);
2095 }
2096
2097 static int fill_def_thread(void)
2098 {
2099         memset(&def_thread, 0, sizeof(def_thread));
2100         INIT_FLIST_HEAD(&def_thread.opt_list);
2101
2102         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2103         def_thread.o.error_dump = 1;
2104
2105         /*
2106          * fill default options
2107          */
2108         fio_fill_default_options(&def_thread);
2109         return 0;
2110 }
2111
2112 static void show_debug_categories(void)
2113 {
2114 #ifdef FIO_INC_DEBUG
2115         const struct debug_level *dl = &debug_levels[0];
2116         int curlen, first = 1;
2117
2118         curlen = 0;
2119         while (dl->name) {
2120                 int has_next = (dl + 1)->name != NULL;
2121
2122                 if (first || curlen + strlen(dl->name) >= 80) {
2123                         if (!first) {
2124                                 printf("\n");
2125                                 curlen = 0;
2126                         }
2127                         curlen += printf("\t\t\t%s", dl->name);
2128                         curlen += 3 * (8 - 1);
2129                         if (has_next)
2130                                 curlen += printf(",");
2131                 } else {
2132                         curlen += printf("%s", dl->name);
2133                         if (has_next)
2134                                 curlen += printf(",");
2135                 }
2136                 dl++;
2137                 first = 0;
2138         }
2139         printf("\n");
2140 #endif
2141 }
2142
2143 /*
2144  * Following options aren't printed by usage().
2145  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2146  * --latency-log - Deprecated option.
2147  */
2148 static void usage(const char *name)
2149 {
2150         printf("%s\n", fio_version_string);
2151         printf("%s [options] [job options] <job file(s)>\n", name);
2152         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2153         show_debug_categories();
2154         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2155         printf("  --output\t\tWrite output to file\n");
2156         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2157         printf("  --minimal\t\tMinimal (terse) output\n");
2158         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2159         printf("  --terse-version=type\tSet terse version output format"
2160                 " (default 3, or 2 or 4)\n");
2161         printf("  --version\t\tPrint version info and exit\n");
2162         printf("  --help\t\tPrint this page\n");
2163         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2164         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2165         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2166                 " them\n");
2167         printf("  --enghelp=engine\tPrint ioengine help, or list"
2168                 " available ioengines\n");
2169         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2170                 " cmd\n");
2171         printf("  --showcmd\t\tTurn a job file into command line options\n");
2172         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2173         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2174         printf("  --eta-newline=t\tForce a new line for every 't'");
2175         printf(" period passed\n");
2176         printf("  --status-interval=t\tForce full status dump every");
2177         printf(" 't' period passed\n");
2178         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2179                 " writes\n");
2180         printf("  --section=name\tOnly run specified section in job file,"
2181                 " multiple sections can be specified\n");
2182         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2183                 " (def 16384)\n");
2184         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2185         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2186         printf("  --server=args\t\tStart a backend fio server\n");
2187         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2188         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2189         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2190         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2191                 "\t\t\t(option=system,percpu) or run unit work\n"
2192                 "\t\t\tcalibration only (option=calibrate)\n");
2193 #ifdef CONFIG_ZLIB
2194         printf("  --inflate-log=log\tInflate and output compressed log\n");
2195 #endif
2196         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2197         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2198         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2199         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2200         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2201         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2202 }
2203
2204 #ifdef FIO_INC_DEBUG
2205 const struct debug_level debug_levels[] = {
2206         { .name = "process",
2207           .help = "Process creation/exit logging",
2208           .shift = FD_PROCESS,
2209         },
2210         { .name = "file",
2211           .help = "File related action logging",
2212           .shift = FD_FILE,
2213         },
2214         { .name = "io",
2215           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2216           .shift = FD_IO,
2217         },
2218         { .name = "mem",
2219           .help = "Memory allocation/freeing logging",
2220           .shift = FD_MEM,
2221         },
2222         { .name = "blktrace",
2223           .help = "blktrace action logging",
2224           .shift = FD_BLKTRACE,
2225         },
2226         { .name = "verify",
2227           .help = "IO verification action logging",
2228           .shift = FD_VERIFY,
2229         },
2230         { .name = "random",
2231           .help = "Random generation logging",
2232           .shift = FD_RANDOM,
2233         },
2234         { .name = "parse",
2235           .help = "Parser logging",
2236           .shift = FD_PARSE,
2237         },
2238         { .name = "diskutil",
2239           .help = "Disk utility logging actions",
2240           .shift = FD_DISKUTIL,
2241         },
2242         { .name = "job",
2243           .help = "Logging related to creating/destroying jobs",
2244           .shift = FD_JOB,
2245         },
2246         { .name = "mutex",
2247           .help = "Mutex logging",
2248           .shift = FD_MUTEX
2249         },
2250         { .name = "profile",
2251           .help = "Logging related to profiles",
2252           .shift = FD_PROFILE,
2253         },
2254         { .name = "time",
2255           .help = "Logging related to time keeping functions",
2256           .shift = FD_TIME,
2257         },
2258         { .name = "net",
2259           .help = "Network logging",
2260           .shift = FD_NET,
2261         },
2262         { .name = "rate",
2263           .help = "Rate logging",
2264           .shift = FD_RATE,
2265         },
2266         { .name = "compress",
2267           .help = "Log compression logging",
2268           .shift = FD_COMPRESS,
2269         },
2270         { .name = "steadystate",
2271           .help = "Steady state detection logging",
2272           .shift = FD_STEADYSTATE,
2273         },
2274         { .name = "helperthread",
2275           .help = "Helper thread logging",
2276           .shift = FD_HELPERTHREAD,
2277         },
2278         { .name = "zbd",
2279           .help = "Zoned Block Device logging",
2280           .shift = FD_ZBD,
2281         },
2282         { .name = NULL, },
2283 };
2284
2285 static int set_debug(const char *string)
2286 {
2287         const struct debug_level *dl;
2288         char *p = (char *) string;
2289         char *opt;
2290         int i;
2291
2292         if (!string)
2293                 return 0;
2294
2295         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2296                 log_info("fio: dumping debug options:");
2297                 for (i = 0; debug_levels[i].name; i++) {
2298                         dl = &debug_levels[i];
2299                         log_info("%s,", dl->name);
2300                 }
2301                 log_info("all\n");
2302                 return 1;
2303         }
2304
2305         while ((opt = strsep(&p, ",")) != NULL) {
2306                 int found = 0;
2307
2308                 if (!strncmp(opt, "all", 3)) {
2309                         log_info("fio: set all debug options\n");
2310                         fio_debug = ~0UL;
2311                         continue;
2312                 }
2313
2314                 for (i = 0; debug_levels[i].name; i++) {
2315                         dl = &debug_levels[i];
2316                         found = !strncmp(opt, dl->name, strlen(dl->name));
2317                         if (!found)
2318                                 continue;
2319
2320                         if (dl->shift == FD_JOB) {
2321                                 opt = strchr(opt, ':');
2322                                 if (!opt) {
2323                                         log_err("fio: missing job number\n");
2324                                         break;
2325                                 }
2326                                 opt++;
2327                                 fio_debug_jobno = atoi(opt);
2328                                 log_info("fio: set debug jobno %d\n",
2329                                                         fio_debug_jobno);
2330                         } else {
2331                                 log_info("fio: set debug option %s\n", opt);
2332                                 fio_debug |= (1UL << dl->shift);
2333                         }
2334                         break;
2335                 }
2336
2337                 if (!found)
2338                         log_err("fio: debug mask %s not found\n", opt);
2339         }
2340         return 0;
2341 }
2342 #else
2343 static int set_debug(const char *string)
2344 {
2345         log_err("fio: debug tracing not included in build\n");
2346         return 1;
2347 }
2348 #endif
2349
2350 static void fio_options_fill_optstring(void)
2351 {
2352         char *ostr = cmd_optstr;
2353         int i, c;
2354
2355         c = i = 0;
2356         while (l_opts[i].name) {
2357                 ostr[c++] = l_opts[i].val;
2358                 if (l_opts[i].has_arg == required_argument)
2359                         ostr[c++] = ':';
2360                 else if (l_opts[i].has_arg == optional_argument) {
2361                         ostr[c++] = ':';
2362                         ostr[c++] = ':';
2363                 }
2364                 i++;
2365         }
2366         ostr[c] = '\0';
2367 }
2368
2369 static int client_flag_set(char c)
2370 {
2371         int i;
2372
2373         i = 0;
2374         while (l_opts[i].name) {
2375                 int val = l_opts[i].val;
2376
2377                 if (c == (val & 0xff))
2378                         return (val & FIO_CLIENT_FLAG);
2379
2380                 i++;
2381         }
2382
2383         return 0;
2384 }
2385
2386 static void parse_cmd_client(void *client, char *opt)
2387 {
2388         fio_client_add_cmd_option(client, opt);
2389 }
2390
2391 static void show_closest_option(const char *name)
2392 {
2393         int best_option, best_distance;
2394         int i, distance;
2395
2396         while (*name == '-')
2397                 name++;
2398
2399         best_option = -1;
2400         best_distance = INT_MAX;
2401         i = 0;
2402         while (l_opts[i].name) {
2403                 distance = string_distance(name, l_opts[i].name);
2404                 if (distance < best_distance) {
2405                         best_distance = distance;
2406                         best_option = i;
2407                 }
2408                 i++;
2409         }
2410
2411         if (best_option != -1 && string_distance_ok(name, best_distance))
2412                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2413 }
2414
2415 static int parse_output_format(const char *optarg)
2416 {
2417         char *p, *orig, *opt;
2418         int ret = 0;
2419
2420         p = orig = strdup(optarg);
2421
2422         output_format = 0;
2423
2424         while ((opt = strsep(&p, ",")) != NULL) {
2425                 if (!strcmp(opt, "minimal") ||
2426                     !strcmp(opt, "terse") ||
2427                     !strcmp(opt, "csv"))
2428                         output_format |= FIO_OUTPUT_TERSE;
2429                 else if (!strcmp(opt, "json"))
2430                         output_format |= FIO_OUTPUT_JSON;
2431                 else if (!strcmp(opt, "json+"))
2432                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2433                 else if (!strcmp(opt, "normal"))
2434                         output_format |= FIO_OUTPUT_NORMAL;
2435                 else {
2436                         log_err("fio: invalid output format %s\n", opt);
2437                         ret = 1;
2438                         break;
2439                 }
2440         }
2441
2442         free(orig);
2443         return ret;
2444 }
2445
2446 int parse_cmd_line(int argc, char *argv[], int client_type)
2447 {
2448         struct thread_data *td = NULL;
2449         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2450         char *ostr = cmd_optstr;
2451         char *pid_file = NULL;
2452         void *cur_client = NULL;
2453         int backend = 0;
2454
2455         /*
2456          * Reset optind handling, since we may call this multiple times
2457          * for the backend.
2458          */
2459         optind = 1;
2460
2461         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2462                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2463                         parse_cmd_client(cur_client, argv[optind - 1]);
2464                         c &= ~FIO_CLIENT_FLAG;
2465                 }
2466
2467                 switch (c) {
2468                 case 'a':
2469                         smalloc_pool_size = atoi(optarg);
2470                         smalloc_pool_size <<= 10;
2471                         sinit();
2472                         break;
2473                 case 'l':
2474                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2475                         do_exit++;
2476                         exit_val = 1;
2477                         break;
2478                 case 'b':
2479                         write_bw_log = 1;
2480                         break;
2481                 case 'o': {
2482                         FILE *tmp;
2483
2484                         if (f_out && f_out != stdout)
2485                                 fclose(f_out);
2486
2487                         tmp = fopen(optarg, "w+");
2488                         if (!tmp) {
2489                                 log_err("fio: output file open error: %s\n", strerror(errno));
2490                                 exit_val = 1;
2491                                 do_exit++;
2492                                 break;
2493                         }
2494                         f_err = f_out = tmp;
2495                         break;
2496                         }
2497                 case 'm':
2498                         output_format = FIO_OUTPUT_TERSE;
2499                         break;
2500                 case 'F':
2501                         if (parse_output_format(optarg)) {
2502                                 log_err("fio: failed parsing output-format\n");
2503                                 exit_val = 1;
2504                                 do_exit++;
2505                                 break;
2506                         }
2507                         break;
2508                 case 'f':
2509                         output_format |= FIO_OUTPUT_TERSE;
2510                         break;
2511                 case 'h':
2512                         did_arg = true;
2513                         if (!cur_client) {
2514                                 usage(argv[0]);
2515                                 do_exit++;
2516                         }
2517                         break;
2518                 case 'c':
2519                         did_arg = true;
2520                         if (!cur_client) {
2521                                 fio_show_option_help(optarg);
2522                                 do_exit++;
2523                         }
2524                         break;
2525                 case 'i':
2526                         did_arg = true;
2527                         if (!cur_client) {
2528                                 fio_show_ioengine_help(optarg);
2529                                 do_exit++;
2530                         }
2531                         break;
2532                 case 's':
2533                         did_arg = true;
2534                         dump_cmdline = 1;
2535                         break;
2536                 case 'r':
2537                         read_only = 1;
2538                         break;
2539                 case 'v':
2540                         did_arg = true;
2541                         if (!cur_client) {
2542                                 log_info("%s\n", fio_version_string);
2543                                 do_exit++;
2544                         }
2545                         break;
2546                 case 'V':
2547                         terse_version = atoi(optarg);
2548                         if (!(terse_version >= 2 && terse_version <= 5)) {
2549                                 log_err("fio: bad terse version format\n");
2550                                 exit_val = 1;
2551                                 do_exit++;
2552                         }
2553                         break;
2554                 case 'e':
2555                         if (!strcmp("always", optarg))
2556                                 eta_print = FIO_ETA_ALWAYS;
2557                         else if (!strcmp("never", optarg))
2558                                 eta_print = FIO_ETA_NEVER;
2559                         break;
2560                 case 'E': {
2561                         long long t = 0;
2562
2563                         if (check_str_time(optarg, &t, 1)) {
2564                                 log_err("fio: failed parsing eta time %s\n", optarg);
2565                                 exit_val = 1;
2566                                 do_exit++;
2567                                 break;
2568                         }
2569                         eta_new_line = t / 1000;
2570                         if (!eta_new_line) {
2571                                 log_err("fio: eta new line time too short\n");
2572                                 exit_val = 1;
2573                                 do_exit++;
2574                         }
2575                         break;
2576                         }
2577                 case 'O': {
2578                         long long t = 0;
2579
2580                         if (check_str_time(optarg, &t, 1)) {
2581                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2582                                 exit_val = 1;
2583                                 do_exit++;
2584                                 break;
2585                         }
2586                         eta_interval_msec = t / 1000;
2587                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2588                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2589                                 exit_val = 1;
2590                                 do_exit++;
2591                         }
2592                         break;
2593                         }
2594                 case 'd':
2595                         if (set_debug(optarg))
2596                                 do_exit++;
2597                         break;
2598                 case 'P':
2599                         did_arg = true;
2600                         parse_only = 1;
2601                         break;
2602                 case 'x': {
2603                         size_t new_size;
2604
2605                         if (!strcmp(optarg, "global")) {
2606                                 log_err("fio: can't use global as only "
2607                                         "section\n");
2608                                 do_exit++;
2609                                 exit_val = 1;
2610                                 break;
2611                         }
2612                         new_size = (nr_job_sections + 1) * sizeof(char *);
2613                         job_sections = realloc(job_sections, new_size);
2614                         job_sections[nr_job_sections] = strdup(optarg);
2615                         nr_job_sections++;
2616                         break;
2617                         }
2618 #ifdef CONFIG_ZLIB
2619                 case 'X':
2620                         exit_val = iolog_file_inflate(optarg);
2621                         did_arg = true;
2622                         do_exit++;
2623                         break;
2624 #endif
2625                 case 'p':
2626                         did_arg = true;
2627                         if (exec_profile)
2628                                 free(exec_profile);
2629                         exec_profile = strdup(optarg);
2630                         break;
2631                 case FIO_GETOPT_JOB: {
2632                         const char *opt = l_opts[lidx].name;
2633                         char *val = optarg;
2634
2635                         if (!strncmp(opt, "name", 4) && td) {
2636                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2637                                 if (ret)
2638                                         goto out_free;
2639                                 td = NULL;
2640                                 did_arg = true;
2641                         }
2642                         if (!td) {
2643                                 int is_section = !strncmp(opt, "name", 4);
2644                                 int global = 0;
2645
2646                                 if (!is_section || !strncmp(val, "global", 6))
2647                                         global = 1;
2648
2649                                 if (is_section && skip_this_section(val))
2650                                         continue;
2651
2652                                 td = get_new_job(global, &def_thread, true, NULL);
2653                                 if (!td || ioengine_load(td)) {
2654                                         if (td) {
2655                                                 put_job(td);
2656                                                 td = NULL;
2657                                         }
2658                                         do_exit++;
2659                                         exit_val = 1;
2660                                         break;
2661                                 }
2662                                 fio_options_set_ioengine_opts(l_opts, td);
2663                         }
2664
2665                         if ((!val || !strlen(val)) &&
2666                             l_opts[lidx].has_arg == required_argument) {
2667                                 log_err("fio: option %s requires an argument\n", opt);
2668                                 ret = 1;
2669                         } else
2670                                 ret = fio_cmd_option_parse(td, opt, val);
2671
2672                         if (ret) {
2673                                 if (td) {
2674                                         put_job(td);
2675                                         td = NULL;
2676                                 }
2677                                 do_exit++;
2678                                 exit_val = 1;
2679                         }
2680
2681                         if (!ret && !strcmp(opt, "ioengine")) {
2682                                 if (ioengine_load(td)) {
2683                                         put_job(td);
2684                                         td = NULL;
2685                                         do_exit++;
2686                                         exit_val = 1;
2687                                         break;
2688                                 }
2689                                 fio_options_set_ioengine_opts(l_opts, td);
2690                         }
2691                         break;
2692                 }
2693                 case FIO_GETOPT_IOENGINE: {
2694                         const char *opt = l_opts[lidx].name;
2695                         char *val = optarg;
2696
2697                         if (!td)
2698                                 break;
2699
2700                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2701                         break;
2702                 }
2703                 case 'w':
2704                         warnings_fatal = 1;
2705                         break;
2706                 case 'j':
2707                         max_jobs = atoi(optarg);
2708                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2709                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2710                                 do_exit++;
2711                                 exit_val = 1;
2712                         }
2713                         break;
2714                 case 'S':
2715                         did_arg = true;
2716 #ifndef CONFIG_NO_SHM
2717                         if (nr_clients) {
2718                                 log_err("fio: can't be both client and server\n");
2719                                 do_exit++;
2720                                 exit_val = 1;
2721                                 break;
2722                         }
2723                         if (optarg)
2724                                 fio_server_set_arg(optarg);
2725                         is_backend = 1;
2726                         backend = 1;
2727 #else
2728                         log_err("fio: client/server requires SHM support\n");
2729                         do_exit++;
2730                         exit_val = 1;
2731 #endif
2732                         break;
2733                 case 'D':
2734                         if (pid_file)
2735                                 free(pid_file);
2736                         pid_file = strdup(optarg);
2737                         break;
2738                 case 'I':
2739                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2740                                 /* exit on error and calibration only */
2741                                 did_arg = true;
2742                                 do_exit++;
2743                                 if (ret == -1)
2744                                         exit_val = 1;
2745                         }
2746                         break;
2747                 case 'C':
2748                         did_arg = true;
2749                         if (is_backend) {
2750                                 log_err("fio: can't be both client and server\n");
2751                                 do_exit++;
2752                                 exit_val = 1;
2753                                 break;
2754                         }
2755                         /* if --client parameter contains a pathname */
2756                         if (0 == access(optarg, R_OK)) {
2757                                 /* file contains a list of host addrs or names */
2758                                 char hostaddr[PATH_MAX] = {0};
2759                                 char formatstr[8];
2760                                 FILE * hostf = fopen(optarg, "r");
2761                                 if (!hostf) {
2762                                         log_err("fio: could not open client list file %s for read\n", optarg);
2763                                         do_exit++;
2764                                         exit_val = 1;
2765                                         break;
2766                                 }
2767                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2768                                 /*
2769                                  * read at most PATH_MAX-1 chars from each
2770                                  * record in this file
2771                                  */
2772                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2773                                         /* expect EVERY host in file to be valid */
2774                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2775                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2776                                                 do_exit++;
2777                                                 exit_val = 1;
2778                                                 break;
2779                                         }
2780                                 }
2781                                 fclose(hostf);
2782                                 break; /* no possibility of job file for "this client only" */
2783                         }
2784                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2785                                 log_err("fio: failed adding client %s\n", optarg);
2786                                 do_exit++;
2787                                 exit_val = 1;
2788                                 break;
2789                         }
2790                         /*
2791                          * If the next argument exists and isn't an option,
2792                          * assume it's a job file for this client only.
2793                          */
2794                         while (optind < argc) {
2795                                 if (!strncmp(argv[optind], "--", 2) ||
2796                                     !strncmp(argv[optind], "-", 1))
2797                                         break;
2798
2799                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2800                                         break;
2801                                 optind++;
2802                         }
2803                         break;
2804                 case 'R':
2805                         did_arg = true;
2806                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2807                                 do_exit++;
2808                                 exit_val = 1;
2809                         }
2810                         break;
2811                 case 'T':
2812                         did_arg = true;
2813                         do_exit++;
2814                         exit_val = fio_monotonic_clocktest(1);
2815                         break;
2816                 case 'G':
2817                         did_arg = true;
2818                         do_exit++;
2819                         exit_val = fio_crctest(optarg);
2820                         break;
2821                 case 'M':
2822                         did_arg = true;
2823                         do_exit++;
2824                         exit_val = fio_memcpy_test(optarg);
2825                         break;
2826                 case 'L': {
2827                         long long val;
2828
2829                         if (check_str_time(optarg, &val, 1)) {
2830                                 log_err("fio: failed parsing time %s\n", optarg);
2831                                 do_exit++;
2832                                 exit_val = 1;
2833                                 break;
2834                         }
2835                         if (val < 1000) {
2836                                 log_err("fio: status interval too small\n");
2837                                 do_exit++;
2838                                 exit_val = 1;
2839                         }
2840                         status_interval = val / 1000;
2841                         break;
2842                         }
2843                 case 'W':
2844                         if (trigger_file)
2845                                 free(trigger_file);
2846                         trigger_file = strdup(optarg);
2847                         break;
2848                 case 'H':
2849                         if (trigger_cmd)
2850                                 free(trigger_cmd);
2851                         trigger_cmd = strdup(optarg);
2852                         break;
2853                 case 'J':
2854                         if (trigger_remote_cmd)
2855                                 free(trigger_remote_cmd);
2856                         trigger_remote_cmd = strdup(optarg);
2857                         break;
2858                 case 'K':
2859                         if (aux_path)
2860                                 free(aux_path);
2861                         aux_path = strdup(optarg);
2862                         break;
2863                 case 'B':
2864                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2865                                 log_err("fio: failed parsing time %s\n", optarg);
2866                                 do_exit++;
2867                                 exit_val = 1;
2868                         }
2869                         trigger_timeout /= 1000000;
2870                         break;
2871                 case '?':
2872                         log_err("%s: unrecognized option '%s'\n", argv[0],
2873                                                         argv[optind - 1]);
2874                         show_closest_option(argv[optind - 1]);
2875                 default:
2876                         do_exit++;
2877                         exit_val = 1;
2878                         break;
2879                 }
2880                 if (do_exit)
2881                         break;
2882         }
2883
2884         if (do_exit && !(is_backend || nr_clients))
2885                 exit(exit_val);
2886
2887         if (nr_clients && fio_clients_connect())
2888                 exit(1);
2889
2890         if (is_backend && backend)
2891                 return fio_start_server(pid_file);
2892         else if (pid_file)
2893                 free(pid_file);
2894
2895         if (td) {
2896                 if (!ret) {
2897                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2898                         if (ret)
2899                                 exit(1);
2900                 }
2901         }
2902
2903         while (!ret && optind < argc) {
2904                 ini_idx++;
2905                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2906                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2907                 optind++;
2908         }
2909
2910 out_free:
2911         return ini_idx;
2912 }
2913
2914 int fio_init_options(void)
2915 {
2916         f_out = stdout;
2917         f_err = stderr;
2918
2919         fio_options_fill_optstring();
2920         fio_options_dup_and_init(l_opts);
2921
2922         atexit(free_shm);
2923
2924         if (fill_def_thread())
2925                 return 1;
2926
2927         return 0;
2928 }
2929
2930 extern int fio_check_options(struct thread_options *);
2931
2932 int parse_options(int argc, char *argv[])
2933 {
2934         const int type = FIO_CLIENT_TYPE_CLI;
2935         int job_files, i;
2936
2937         if (fio_init_options())
2938                 return 1;
2939         if (fio_test_cconv(&def_thread.o))
2940                 log_err("fio: failed internal cconv test\n");
2941
2942         job_files = parse_cmd_line(argc, argv, type);
2943
2944         if (job_files > 0) {
2945                 for (i = 0; i < job_files; i++) {
2946                         if (i && fill_def_thread())
2947                                 return 1;
2948                         if (nr_clients) {
2949                                 if (fio_clients_send_ini(ini_file[i]))
2950                                         return 1;
2951                                 free(ini_file[i]);
2952                         } else if (!is_backend) {
2953                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2954                                         return 1;
2955                                 free(ini_file[i]);
2956                         }
2957                 }
2958         } else if (nr_clients) {
2959                 if (fill_def_thread())
2960                         return 1;
2961                 if (fio_clients_send_ini(NULL))
2962                         return 1;
2963         }
2964
2965         free(ini_file);
2966         fio_options_free(&def_thread);
2967         filesetup_mem_free();
2968
2969         if (!thread_number) {
2970                 if (parse_dryrun())
2971                         return 0;
2972                 if (exec_profile)
2973                         return 0;
2974                 if (is_backend || nr_clients)
2975                         return 0;
2976                 if (did_arg)
2977                         return 0;
2978
2979                 log_err("No job(s) defined\n\n");
2980                 usage(argv[0]);
2981                 return 1;
2982         }
2983
2984         if (output_format & FIO_OUTPUT_NORMAL)
2985                 log_info("%s\n", fio_version_string);
2986
2987         return 0;
2988 }
2989
2990 void options_default_fill(struct thread_options *o)
2991 {
2992         memcpy(o, &def_thread.o, sizeof(*o));
2993 }
2994
2995 struct thread_data *get_global_options(void)
2996 {
2997         return &def_thread;
2998 }