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 #include "blktrace.h"
  34
  35 #include "oslib/getopt.h"
  36 #include "oslib/strcasestr.h"
  37
  38 #include "crc/test.h"
  39 #include "lib/pow2.h"
  40 #include "lib/memcpy.h"
  41
  42 const char fio_version_string[] = FIO_VERSION;
  43
  44 #define FIO_RANDSEED            (0xb1899bedUL)
  45
  46 static char **ini_file;
  47 static int max_jobs = FIO_MAX_JOBS;
  48 static bool dump_cmdline;
  49 static bool parse_only;
  50 static bool merge_blktrace_only;
  51
  52 static struct thread_data def_thread;
  53 struct thread_data *threads = NULL;
  54 static char **job_sections;
  55 static int nr_job_sections;
  56
  57 bool exitall_on_terminate = false;
  58 int output_format = FIO_OUTPUT_NORMAL;
  59 int eta_print = FIO_ETA_AUTO;
  60 unsigned int eta_interval_msec = 1000;
  61 int eta_new_line = 0;
  62 FILE *f_out = NULL;
  63 FILE *f_err = NULL;
  64 char *exec_profile = NULL;
  65 int warnings_fatal = 0;
  66 int terse_version = 3;
  67 bool is_backend = false;
  68 bool is_local_backend = false;
  69 int nr_clients = 0;
  70 bool log_syslog = false;
  71
  72 bool write_bw_log = false;
  73 bool read_only = false;
  74 int status_interval = 0;
  75
  76 char *trigger_file = NULL;
  77 long long trigger_timeout = 0;
  78 char *trigger_cmd = NULL;
  79 char *trigger_remote_cmd = NULL;
  80
  81 char *aux_path = NULL;
  82
  83 static int prev_group_jobs;
  84
  85 unsigned long fio_debug = 0;
  86 unsigned int fio_debug_jobno = -1;
  87 unsigned int *fio_debug_jobp = NULL;
  88 unsigned int *fio_warned = NULL;
  89
  90 static char cmd_optstr[256];
  91 static bool did_arg;
  92
  93 #define FIO_CLIENT_FLAG         (1 << 16)
  94
  95 /*
  96  * Command line options. These will contain the above, plus a few
  97  * extra that only pertain to fio itself and not jobs.
  98  */
  99 static struct option l_opts[FIO_NR_OPTIONS] = {
 100         {
 101                 .name           = (char *) "output",
 102                 .has_arg        = required_argument,
 103                 .val            = 'o' | FIO_CLIENT_FLAG,
 104         },
 105         {
 106                 .name           = (char *) "latency-log",
 107                 .has_arg        = required_argument,
 108                 .val            = 'l' | FIO_CLIENT_FLAG,
 109         },
 110         {
 111                 .name           = (char *) "bandwidth-log",
 112                 .has_arg        = no_argument,
 113                 .val            = 'b' | FIO_CLIENT_FLAG,
 114         },
 115         {
 116                 .name           = (char *) "minimal",
 117                 .has_arg        = no_argument,
 118                 .val            = 'm' | FIO_CLIENT_FLAG,
 119         },
 120         {
 121                 .name           = (char *) "output-format",
 122                 .has_arg        = required_argument,
 123                 .val            = 'F' | FIO_CLIENT_FLAG,
 124         },
 125         {
 126                 .name           = (char *) "append-terse",
 127                 .has_arg        = optional_argument,
 128                 .val            = 'f',
 129         },
 130         {
 131                 .name           = (char *) "version",
 132                 .has_arg        = no_argument,
 133                 .val            = 'v' | FIO_CLIENT_FLAG,
 134         },
 135         {
 136                 .name           = (char *) "help",
 137                 .has_arg        = no_argument,
 138                 .val            = 'h' | FIO_CLIENT_FLAG,
 139         },
 140         {
 141                 .name           = (char *) "cmdhelp",
 142                 .has_arg        = optional_argument,
 143                 .val            = 'c' | FIO_CLIENT_FLAG,
 144         },
 145         {
 146                 .name           = (char *) "enghelp",
 147                 .has_arg        = optional_argument,
 148                 .val            = 'i' | FIO_CLIENT_FLAG,
 149         },
 150         {
 151                 .name           = (char *) "showcmd",
 152                 .has_arg        = no_argument,
 153                 .val            = 's' | FIO_CLIENT_FLAG,
 154         },
 155         {
 156                 .name           = (char *) "readonly",
 157                 .has_arg        = no_argument,
 158                 .val            = 'r' | FIO_CLIENT_FLAG,
 159         },
 160         {
 161                 .name           = (char *) "eta",
 162                 .has_arg        = required_argument,
 163                 .val            = 'e' | FIO_CLIENT_FLAG,
 164         },
 165         {
 166                 .name           = (char *) "eta-interval",
 167                 .has_arg        = required_argument,
 168                 .val            = 'O' | FIO_CLIENT_FLAG,
 169         },
 170         {
 171                 .name           = (char *) "eta-newline",
 172                 .has_arg        = required_argument,
 173                 .val            = 'E' | FIO_CLIENT_FLAG,
 174         },
 175         {
 176                 .name           = (char *) "debug",
 177                 .has_arg        = required_argument,
 178                 .val            = 'd' | FIO_CLIENT_FLAG,
 179         },
 180         {
 181                 .name           = (char *) "parse-only",
 182                 .has_arg        = no_argument,
 183                 .val            = 'P' | FIO_CLIENT_FLAG,
 184         },
 185         {
 186                 .name           = (char *) "section",
 187                 .has_arg        = required_argument,
 188                 .val            = 'x' | FIO_CLIENT_FLAG,
 189         },
 190 #ifdef CONFIG_ZLIB
 191         {
 192                 .name           = (char *) "inflate-log",
 193                 .has_arg        = required_argument,
 194                 .val            = 'X' | FIO_CLIENT_FLAG,
 195         },
 196 #endif
 197         {
 198                 .name           = (char *) "alloc-size",
 199                 .has_arg        = required_argument,
 200                 .val            = 'a' | FIO_CLIENT_FLAG,
 201         },
 202         {
 203                 .name           = (char *) "profile",
 204                 .has_arg        = required_argument,
 205                 .val            = 'p' | FIO_CLIENT_FLAG,
 206         },
 207         {
 208                 .name           = (char *) "warnings-fatal",
 209                 .has_arg        = no_argument,
 210                 .val            = 'w' | FIO_CLIENT_FLAG,
 211         },
 212         {
 213                 .name           = (char *) "max-jobs",
 214                 .has_arg        = required_argument,
 215                 .val            = 'j' | FIO_CLIENT_FLAG,
 216         },
 217         {
 218                 .name           = (char *) "terse-version",
 219                 .has_arg        = required_argument,
 220                 .val            = 'V' | FIO_CLIENT_FLAG,
 221         },
 222         {
 223                 .name           = (char *) "server",
 224                 .has_arg        = optional_argument,
 225                 .val            = 'S',
 226         },
 227         {       .name           = (char *) "daemonize",
 228                 .has_arg        = required_argument,
 229                 .val            = 'D',
 230         },
 231         {
 232                 .name           = (char *) "client",
 233                 .has_arg        = required_argument,
 234                 .val            = 'C',
 235         },
 236         {
 237                 .name           = (char *) "remote-config",
 238                 .has_arg        = required_argument,
 239                 .val            = 'R',
 240         },
 241         {
 242                 .name           = (char *) "cpuclock-test",
 243                 .has_arg        = no_argument,
 244                 .val            = 'T',
 245         },
 246         {
 247                 .name           = (char *) "crctest",
 248                 .has_arg        = optional_argument,
 249                 .val            = 'G',
 250         },
 251         {
 252                 .name           = (char *) "memcpytest",
 253                 .has_arg        = optional_argument,
 254                 .val            = 'M',
 255         },
 256         {
 257                 .name           = (char *) "idle-prof",
 258                 .has_arg        = required_argument,
 259                 .val            = 'I',
 260         },
 261         {
 262                 .name           = (char *) "status-interval",
 263                 .has_arg        = required_argument,
 264                 .val            = 'L' | FIO_CLIENT_FLAG,
 265         },
 266         {
 267                 .name           = (char *) "trigger-file",
 268                 .has_arg        = required_argument,
 269                 .val            = 'W',
 270         },
 271         {
 272                 .name           = (char *) "trigger-timeout",
 273                 .has_arg        = required_argument,
 274                 .val            = 'B',
 275         },
 276         {
 277                 .name           = (char *) "trigger",
 278                 .has_arg        = required_argument,
 279                 .val            = 'H',
 280         },
 281         {
 282                 .name           = (char *) "trigger-remote",
 283                 .has_arg        = required_argument,
 284                 .val            = 'J',
 285         },
 286         {
 287                 .name           = (char *) "aux-path",
 288                 .has_arg        = required_argument,
 289                 .val            = 'K',
 290         },
 291         {
 292                 .name           = (char *) "merge-blktrace-only",
 293                 .has_arg        = no_argument,
 294                 .val            = 'A' | FIO_CLIENT_FLAG,
 295         },
 296         {
 297                 .name           = NULL,
 298         },
 299 };
 300
 301 void free_threads_shm(void)
 302 {
 303         if (threads) {
 304                 void *tp = threads;
 305 #ifndef CONFIG_NO_SHM
 306                 struct shmid_ds sbuf;
 307
 308                 threads = NULL;
 309                 shmdt(tp);
 310                 shmctl(shm_id, IPC_RMID, &sbuf);
 311                 shm_id = -1;
 312 #else
 313                 threads = NULL;
 314                 free(tp);
 315 #endif
 316         }
 317 }
 318
 319 static void free_shm(void)
 320 {
 321         if (threads) {
 322                 flow_exit();
 323                 fio_debug_jobp = NULL;
 324                 fio_warned = NULL;
 325                 free_threads_shm();
 326         }
 327
 328         free(trigger_file);
 329         free(trigger_cmd);
 330         free(trigger_remote_cmd);
 331         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 332
 333         options_free(fio_options, &def_thread.o);
 334         fio_filelock_exit();
 335         file_hash_exit();
 336         scleanup();
 337 }
 338
 339 /*
 340  * The thread area is shared between the main process and the job
 341  * threads/processes. So setup a shared memory segment that will hold
 342  * all the job info. We use the end of the region for keeping track of
 343  * open files across jobs, for file sharing.
 344  */
 345 static int setup_thread_area(void)
 346 {
 347         int i;
 348
 349         if (threads)
 350                 return 0;
 351
 352         /*
 353          * 1024 is too much on some machines, scale max_jobs if
 354          * we get a failure that looks like too large a shm segment
 355          */
 356         do {
 357                 size_t size = max_jobs * sizeof(struct thread_data);
 358
 359                 size += 2 * sizeof(unsigned int);
 360
 361 #ifndef CONFIG_NO_SHM
 362                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 363                 if (shm_id != -1)
 364                         break;
 365                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 366                         perror("shmget");
 367                         break;
 368                 }
 369 #else
 370                 threads = malloc(size);
 371                 if (threads)
 372                         break;
 373 #endif
 374
 375                 max_jobs >>= 1;
 376         } while (max_jobs);
 377
 378 #ifndef CONFIG_NO_SHM
 379         if (shm_id == -1)
 380                 return 1;
 381
 382         threads = shmat(shm_id, NULL, 0);
 383         if (threads == (void *) -1) {
 384                 perror("shmat");
 385                 return 1;
 386         }
 387         if (shm_attach_to_open_removed())
 388                 shmctl(shm_id, IPC_RMID, NULL);
 389 #endif
 390
 391         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 392         for (i = 0; i < max_jobs; i++)
 393                 DRD_IGNORE_VAR(threads[i]);
 394         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
 395         *fio_debug_jobp = -1;
 396         fio_warned = fio_debug_jobp + 1;
 397         *fio_warned = 0;
 398
 399         flow_init();
 400
 401         return 0;
 402 }
 403
 404 static void dump_print_option(struct print_option *p)
 405 {
 406         const char *delim;
 407
 408         if (!strcmp("description", p->name))
 409                 delim = "\"";
 410         else
 411                 delim = "";
 412
 413         log_info("--%s%s", p->name, p->value ? "" : " ");
 414         if (p->value)
 415                 log_info("=%s%s%s ", delim, p->value, delim);
 416 }
 417
 418 static void dump_opt_list(struct thread_data *td)
 419 {
 420         struct flist_head *entry;
 421         struct print_option *p;
 422
 423         if (flist_empty(&td->opt_list))
 424                 return;
 425
 426         flist_for_each(entry, &td->opt_list) {
 427                 p = flist_entry(entry, struct print_option, list);
 428                 dump_print_option(p);
 429         }
 430 }
 431
 432 static void fio_dump_options_free(struct thread_data *td)
 433 {
 434         while (!flist_empty(&td->opt_list)) {
 435                 struct print_option *p;
 436
 437                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 438                 flist_del_init(&p->list);
 439                 free(p->name);
 440                 free(p->value);
 441                 free(p);
 442         }
 443 }
 444
 445 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 446 {
 447         struct flist_head *entry;
 448
 449         if (flist_empty(&src->opt_list))
 450                 return;
 451
 452         flist_for_each(entry, &src->opt_list) {
 453                 struct print_option *srcp, *dstp;
 454
 455                 srcp = flist_entry(entry, struct print_option, list);
 456                 dstp = malloc(sizeof(*dstp));
 457                 dstp->name = strdup(srcp->name);
 458                 if (srcp->value)
 459                         dstp->value = strdup(srcp->value);
 460                 else
 461                         dstp->value = NULL;
 462                 flist_add_tail(&dstp->list, &dst->opt_list);
 463         }
 464 }
 465
 466 /*
 467  * Return a free job structure.
 468  */
 469 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 470                                        bool preserve_eo, const char *jobname)
 471 {
 472         struct thread_data *td;
 473
 474         if (global)
 475                 return &def_thread;
 476         if (setup_thread_area()) {
 477                 log_err("error: failed to setup shm segment\n");
 478                 return NULL;
 479         }
 480         if (thread_number >= max_jobs) {
 481                 log_err("error: maximum number of jobs (%d) reached.\n",
 482                                 max_jobs);
 483                 return NULL;
 484         }
 485
 486         td = &threads[thread_number++];
 487         *td = *parent;
 488
 489         INIT_FLIST_HEAD(&td->opt_list);
 490         if (parent != &def_thread)
 491                 copy_opt_list(td, parent);
 492
 493         td->io_ops = NULL;
 494         td->io_ops_init = 0;
 495         if (!preserve_eo)
 496                 td->eo = NULL;
 497
 498         td->o.uid = td->o.gid = -1U;
 499
 500         dup_files(td, parent);
 501         fio_options_mem_dupe(td);
 502
 503         profile_add_hooks(td);
 504
 505         td->thread_number = thread_number;
 506         td->subjob_number = 0;
 507
 508         if (jobname)
 509                 td->o.name = strdup(jobname);
 510
 511         if (!parent->o.group_reporting || parent == &def_thread)
 512                 stat_number++;
 513
 514         return td;
 515 }
 516
 517 static void put_job(struct thread_data *td)
 518 {
 519         if (td == &def_thread)
 520                 return;
 521
 522         profile_td_exit(td);
 523         flow_exit_job(td);
 524
 525         if (td->error)
 526                 log_info("fio: %s\n", td->verror);
 527
 528         fio_options_free(td);
 529         fio_dump_options_free(td);
 530         if (td->io_ops)
 531                 free_ioengine(td);
 532
 533         if (td->o.name)
 534                 free(td->o.name);
 535
 536         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 537         thread_number--;
 538 }
 539
 540 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 541 {
 542         unsigned long long bs = td->o.min_bs[ddir];
 543
 544         assert(ddir_rw(ddir));
 545
 546         if (td->o.rate[ddir])
 547                 td->rate_bps[ddir] = td->o.rate[ddir];
 548         else
 549                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 550
 551         if (!td->rate_bps[ddir]) {
 552                 log_err("rate lower than supported\n");
 553                 return -1;
 554         }
 555
 556         td->rate_next_io_time[ddir] = 0;
 557         td->rate_io_issue_bytes[ddir] = 0;
 558         td->last_usec[ddir] = 0;
 559         return 0;
 560 }
 561
 562 static int setup_rate(struct thread_data *td)
 563 {
 564         int ret = 0;
 565
 566         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 567                 ret = __setup_rate(td, DDIR_READ);
 568         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 569                 ret |= __setup_rate(td, DDIR_WRITE);
 570         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 571                 ret |= __setup_rate(td, DDIR_TRIM);
 572
 573         return ret;
 574 }
 575
 576 static int fixed_block_size(struct thread_options *o)
 577 {
 578         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 579                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 580                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 581                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 582                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 583 }
 584
 585 /*
 586  * <3 Johannes
 587  */
 588 static unsigned int gcd(unsigned int m, unsigned int n)
 589 {
 590         if (!n)
 591                 return m;
 592
 593         return gcd(n, m % n);
 594 }
 595
 596 /*
 597  * Lazy way of fixing up options that depend on each other. We could also
 598  * define option callback handlers, but this is easier.
 599  */
 600 static int fixup_options(struct thread_data *td)
 601 {
 602         struct thread_options *o = &td->o;
 603         int ret = 0;
 604
 605         if (read_only && (td_write(td) || td_trim(td))) {
 606                 log_err("fio: trim and write operations are not allowed"
 607                          " with the --readonly parameter.\n");
 608                 ret |= 1;
 609         }
 610
 611 #ifndef CONFIG_PSHARED
 612         if (!o->use_thread) {
 613                 log_info("fio: this platform does not support process shared"
 614                          " mutexes, forcing use of threads. Use the 'thread'"
 615                          " option to get rid of this warning.\n");
 616                 o->use_thread = 1;
 617                 ret |= warnings_fatal;
 618         }
 619 #endif
 620
 621         if (o->write_iolog_file && o->read_iolog_file) {
 622                 log_err("fio: read iolog overrides write_iolog\n");
 623                 free(o->write_iolog_file);
 624                 o->write_iolog_file = NULL;
 625                 ret |= warnings_fatal;
 626         }
 627
 628         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
 629                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
 630                 ret |= 1;
 631         }
 632
 633         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
 634                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
 635                 ret |= 1;
 636         }
 637
 638         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
 639                 if (o->zone_size)
 640                         o->zone_mode = ZONE_MODE_STRIDED;
 641                 else
 642                         o->zone_mode = ZONE_MODE_NONE;
 643         }
 644
 645         /*
 646          * Strided zone mode only really works with 1 file.
 647          */
 648         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
 649                 o->zone_mode = ZONE_MODE_NONE;
 650
 651         /*
 652          * If zone_range isn't specified, backward compatibility dictates it
 653          * should be made equal to zone_size.
 654          */
 655         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
 656                 o->zone_range = o->zone_size;
 657
 658         /*
 659          * Reads can do overwrites, we always need to pre-create the file
 660          */
 661         if (td_read(td))
 662                 o->overwrite = 1;
 663
 664         if (!o->min_bs[DDIR_READ])
 665                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 666         if (!o->max_bs[DDIR_READ])
 667                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 668         if (!o->min_bs[DDIR_WRITE])
 669                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 670         if (!o->max_bs[DDIR_WRITE])
 671                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 672         if (!o->min_bs[DDIR_TRIM])
 673                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 674         if (!o->max_bs[DDIR_TRIM])
 675                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 676
 677         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 678         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 679
 680         /*
 681          * For random IO, allow blockalign offset other than min_bs.
 682          */
 683         if (!o->ba[DDIR_READ] || !td_random(td))
 684                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 685         if (!o->ba[DDIR_WRITE] || !td_random(td))
 686                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 687         if (!o->ba[DDIR_TRIM] || !td_random(td))
 688                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 689
 690         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 691             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 692             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 693             !o->norandommap) {
 694                 log_err("fio: Any use of blockalign= turns off randommap\n");
 695                 o->norandommap = 1;
 696                 ret |= warnings_fatal;
 697         }
 698
 699         if (!o->file_size_high)
 700                 o->file_size_high = o->file_size_low;
 701
 702         if (o->start_delay_high) {
 703                 if (!o->start_delay_orig)
 704                         o->start_delay_orig = o->start_delay;
 705                 o->start_delay = rand_between(&td->delay_state,
 706                                                 o->start_delay_orig,
 707                                                 o->start_delay_high);
 708         }
 709
 710         if (o->norandommap && o->verify != VERIFY_NONE
 711             && !fixed_block_size(o))  {
 712                 log_err("fio: norandommap given for variable block sizes, "
 713                         "verify limited\n");
 714                 ret |= warnings_fatal;
 715         }
 716         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 717                 log_err("fio: bs_unaligned may not work with raw io\n");
 718
 719         /*
 720          * thinktime_spin must be less than thinktime
 721          */
 722         if (o->thinktime_spin > o->thinktime)
 723                 o->thinktime_spin = o->thinktime;
 724
 725         /*
 726          * The low water mark cannot be bigger than the iodepth
 727          */
 728         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 729                 o->iodepth_low = o->iodepth;
 730
 731         /*
 732          * If batch number isn't set, default to the same as iodepth
 733          */
 734         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 735                 o->iodepth_batch = o->iodepth;
 736
 737         /*
 738          * If max batch complete number isn't set or set incorrectly,
 739          * default to the same as iodepth_batch_complete_min
 740          */
 741         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 742                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 743
 744         /*
 745          * There's no need to check for in-flight overlapping IOs if the job
 746          * isn't changing data or the maximum iodepth is guaranteed to be 1
 747          * when we are not in offload mode
 748          */
 749         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 750             (!(td_write(td) || td_trim(td)) || o->iodepth == 1) &&
 751             o->io_submit_mode != IO_MODE_OFFLOAD)
 752                 o->serialize_overlap = 0;
 753
 754         if (o->nr_files > td->files_index)
 755                 o->nr_files = td->files_index;
 756
 757         if (o->open_files > o->nr_files || !o->open_files)
 758                 o->open_files = o->nr_files;
 759
 760         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 761             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 762             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 763             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 764                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 765                 ret |= 1;
 766         }
 767         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 768             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 769             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 770             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 771             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 772             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 773                 log_err("fio: minimum rate exceeds rate\n");
 774                 ret |= 1;
 775         }
 776
 777         if (!o->timeout && o->time_based) {
 778                 log_err("fio: time_based requires a runtime/timeout setting\n");
 779                 o->time_based = 0;
 780                 ret |= warnings_fatal;
 781         }
 782
 783         if (o->fill_device && !o->size)
 784                 o->size = -1ULL;
 785
 786         if (o->verify != VERIFY_NONE) {
 787                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 788                     (o->filename ||
 789                      !(o->unique_filename &&
 790                        strstr(o->filename_format, "$jobname") &&
 791                        strstr(o->filename_format, "$jobnum") &&
 792                        strstr(o->filename_format, "$filenum")))) {
 793                         log_info("fio: multiple writers may overwrite blocks "
 794                                 "that belong to other jobs. This can cause "
 795                                 "verification failures.\n");
 796                         ret |= warnings_fatal;
 797                 }
 798
 799                 /*
 800                  * Warn if verification is requested but no verification of any
 801                  * kind can be started due to time constraints
 802                  */
 803                 if (td_write(td) && o->do_verify && o->timeout &&
 804                     o->time_based && !td_read(td) && !o->verify_backlog) {
 805                         log_info("fio: verification read phase will never "
 806                                  "start because write phase uses all of "
 807                                  "runtime\n");
 808                         ret |= warnings_fatal;
 809                 }
 810
 811                 if (!fio_option_is_set(o, refill_buffers))
 812                         o->refill_buffers = 1;
 813
 814                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 815                     !o->verify_interval)
 816                         o->verify_interval = o->min_bs[DDIR_WRITE];
 817
 818                 /*
 819                  * Verify interval must be smaller or equal to the
 820                  * write size.
 821                  */
 822                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 823                         o->verify_interval = o->min_bs[DDIR_WRITE];
 824                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 825                         o->verify_interval = o->min_bs[DDIR_READ];
 826
 827                 /*
 828                  * Verify interval must be a factor of both min and max
 829                  * write size
 830                  */
 831                 if (!o->verify_interval ||
 832                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 833                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 834                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 835                                                         o->max_bs[DDIR_WRITE]);
 836         }
 837
 838         if (o->pre_read) {
 839                 if (o->invalidate_cache)
 840                         o->invalidate_cache = 0;
 841                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 842                         log_info("fio: cannot pre-read files with an IO engine"
 843                                  " that isn't seekable. Pre-read disabled.\n");
 844                         ret |= warnings_fatal;
 845                 }
 846         }
 847
 848         if (o->unit_base == N2S_NONE) {
 849                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 850                         o->unit_base = N2S_BITPERSEC;
 851                 else
 852                         o->unit_base = N2S_BYTEPERSEC;
 853         }
 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         uint64_t 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         snprintf(buf, buf_size, "%s", o->filename_format);
1272
1273         memset(copy, 0, sizeof(copy));
1274         for (f = &fpre_keywords[0]; f->keyword; f++) {
1275                 do {
1276                         size_t pre_len, post_start = 0;
1277                         char *str, *dst = copy;
1278
1279                         str = strcasestr(buf, f->keyword);
1280                         if (!str)
1281                                 break;
1282
1283                         pre_len = str - buf;
1284                         if (strlen(str) != f->strlen)
1285                                 post_start = pre_len + f->strlen;
1286
1287                         if (pre_len) {
1288                                 strncpy(dst, buf, pre_len);
1289                                 dst += pre_len;
1290                                 dst_left -= pre_len;
1291                         }
1292
1293                         switch (f->key) {
1294                         case FPRE_JOBNAME: {
1295                                 int ret;
1296
1297                                 ret = snprintf(dst, dst_left, "%s", jobname);
1298                                 if (ret < 0)
1299                                         break;
1300                                 else if (ret > dst_left) {
1301                                         log_err("fio: truncated filename\n");
1302                                         dst += dst_left;
1303                                         dst_left = 0;
1304                                 } else {
1305                                         dst += ret;
1306                                         dst_left -= ret;
1307                                 }
1308                                 break;
1309                                 }
1310                         case FPRE_JOBNUM: {
1311                                 int ret;
1312
1313                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1314                                 if (ret < 0)
1315                                         break;
1316                                 else if (ret > dst_left) {
1317                                         log_err("fio: truncated filename\n");
1318                                         dst += dst_left;
1319                                         dst_left = 0;
1320                                 } else {
1321                                         dst += ret;
1322                                         dst_left -= ret;
1323                                 }
1324                                 break;
1325                                 }
1326                         case FPRE_FILENUM: {
1327                                 int ret;
1328
1329                                 ret = snprintf(dst, dst_left, "%d", filenum);
1330                                 if (ret < 0)
1331                                         break;
1332                                 else if (ret > dst_left) {
1333                                         log_err("fio: truncated filename\n");
1334                                         dst += dst_left;
1335                                         dst_left = 0;
1336                                 } else {
1337                                         dst += ret;
1338                                         dst_left -= ret;
1339                                 }
1340                                 break;
1341                                 }
1342                         default:
1343                                 assert(0);
1344                                 break;
1345                         }
1346
1347                         if (post_start)
1348                                 strncpy(dst, buf + post_start, dst_left);
1349
1350                         snprintf(buf, buf_size, "%s", copy);
1351                 } while (1);
1352         }
1353
1354         return buf;
1355 }
1356
1357 bool parse_dryrun(void)
1358 {
1359         return dump_cmdline || parse_only;
1360 }
1361
1362 static void gen_log_name(char *name, size_t size, const char *logtype,
1363                          const char *logname, unsigned int num,
1364                          const char *suf, int per_job)
1365 {
1366         if (per_job)
1367                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1368         else
1369                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1370 }
1371
1372 static int check_waitees(char *waitee)
1373 {
1374         struct thread_data *td;
1375         int i, ret = 0;
1376
1377         for_each_td(td, i) {
1378                 if (td->subjob_number)
1379                         continue;
1380
1381                 ret += !strcmp(td->o.name, waitee);
1382         }
1383
1384         return ret;
1385 }
1386
1387 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1388 {
1389         int nw;
1390
1391         if (!o->wait_for)
1392                 return true;
1393
1394         if (!strcmp(jobname, o->wait_for)) {
1395                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1396                                 jobname, o->wait_for);
1397                 return false;
1398         }
1399
1400         if (!(nw = check_waitees(o->wait_for))) {
1401                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1402                 return false;
1403         }
1404
1405         if (nw > 1) {
1406                 log_err("%s: multiple waitees %s found,\n"
1407                         "please avoid duplicates when using wait_for option.\n",
1408                                 jobname, o->wait_for);
1409                 return false;
1410         }
1411
1412         return true;
1413 }
1414
1415 /*
1416  * Treat an empty log file name the same as a one not given
1417  */
1418 static const char *make_log_name(const char *logname, const char *jobname)
1419 {
1420         if (logname && strcmp(logname, ""))
1421                 return logname;
1422
1423         return jobname;
1424 }
1425
1426 /*
1427  * Adds a job to the list of things todo. Sanitizes the various options
1428  * to make sure we don't have conflicts, and initializes various
1429  * members of td.
1430  */
1431 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1432                    int recursed, int client_type)
1433 {
1434         unsigned int i;
1435         char fname[PATH_MAX + 1];
1436         int numjobs, file_alloced;
1437         struct thread_options *o = &td->o;
1438         char logname[PATH_MAX + 32];
1439
1440         /*
1441          * the def_thread is just for options, it's not a real job
1442          */
1443         if (td == &def_thread)
1444                 return 0;
1445
1446         init_flags(td);
1447
1448         /*
1449          * if we are just dumping the output command line, don't add the job
1450          */
1451         if (parse_dryrun()) {
1452                 put_job(td);
1453                 return 0;
1454         }
1455
1456         td->client_type = client_type;
1457
1458         if (profile_td_init(td))
1459                 goto err;
1460
1461         if (ioengine_load(td))
1462                 goto err;
1463
1464         file_alloced = 0;
1465         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1466                 file_alloced = 1;
1467
1468                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1469                         add_file(td, jobname, job_add_num, 0);
1470                 else {
1471                         for (i = 0; i < o->nr_files; i++)
1472                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1473                 }
1474         }
1475
1476         if (setup_random_seeds(td)) {
1477                 td_verror(td, errno, "setup_random_seeds");
1478                 goto err;
1479         }
1480
1481         if (fixup_options(td))
1482                 goto err;
1483
1484         /*
1485          * Belongs to fixup_options, but o->name is not necessarily set as yet
1486          */
1487         if (!wait_for_ok(jobname, o))
1488                 goto err;
1489
1490         flow_init_job(td);
1491
1492         /*
1493          * IO engines only need this for option callbacks, and the address may
1494          * change in subprocesses.
1495          */
1496         if (td->eo)
1497                 *(struct thread_data **)td->eo = NULL;
1498
1499         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1500                 struct fio_file *f;
1501
1502                 for_each_file(td, f, i)
1503                         f->real_file_size = -1ULL;
1504         }
1505
1506         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1507
1508         td->ts.clat_percentiles = o->clat_percentiles;
1509         td->ts.lat_percentiles = o->lat_percentiles;
1510         td->ts.percentile_precision = o->percentile_precision;
1511         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1512         td->ts.sig_figs = o->sig_figs;
1513
1514         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1515                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1516                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1517                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1518                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1519                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1520         }
1521         td->ts.sync_stat.min_val = ULONG_MAX;
1522         td->ddir_seq_nr = o->ddir_seq_nr;
1523
1524         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1525                 prev_group_jobs = 0;
1526                 groupid++;
1527                 if (groupid == INT_MAX) {
1528                         log_err("fio: too many groups defined\n");
1529                         goto err;
1530                 }
1531         }
1532
1533         td->groupid = groupid;
1534         prev_group_jobs++;
1535
1536         if (setup_rate(td))
1537                 goto err;
1538
1539         if (o->write_lat_log) {
1540                 struct log_params p = {
1541                         .td = td,
1542                         .avg_msec = o->log_avg_msec,
1543                         .hist_msec = o->log_hist_msec,
1544                         .hist_coarseness = o->log_hist_coarseness,
1545                         .log_type = IO_LOG_TYPE_LAT,
1546                         .log_offset = o->log_offset,
1547                         .log_gz = o->log_gz,
1548                         .log_gz_store = o->log_gz_store,
1549                 };
1550                 const char *pre = make_log_name(o->lat_log_file, o->name);
1551                 const char *suf;
1552
1553                 if (p.log_gz_store)
1554                         suf = "log.fz";
1555                 else
1556                         suf = "log";
1557
1558                 gen_log_name(logname, sizeof(logname), "lat", pre,
1559                                 td->thread_number, suf, o->per_job_logs);
1560                 setup_log(&td->lat_log, &p, logname);
1561
1562                 gen_log_name(logname, sizeof(logname), "slat", pre,
1563                                 td->thread_number, suf, o->per_job_logs);
1564                 setup_log(&td->slat_log, &p, logname);
1565
1566                 gen_log_name(logname, sizeof(logname), "clat", pre,
1567                                 td->thread_number, suf, o->per_job_logs);
1568                 setup_log(&td->clat_log, &p, logname);
1569
1570         }
1571
1572         if (o->write_hist_log) {
1573                 struct log_params p = {
1574                         .td = td,
1575                         .avg_msec = o->log_avg_msec,
1576                         .hist_msec = o->log_hist_msec,
1577                         .hist_coarseness = o->log_hist_coarseness,
1578                         .log_type = IO_LOG_TYPE_HIST,
1579                         .log_offset = o->log_offset,
1580                         .log_gz = o->log_gz,
1581                         .log_gz_store = o->log_gz_store,
1582                 };
1583                 const char *pre = make_log_name(o->hist_log_file, o->name);
1584                 const char *suf;
1585
1586 #ifndef CONFIG_ZLIB
1587                 if (td->client_type) {
1588                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1589                         goto err;
1590                 }
1591 #endif
1592
1593                 if (p.log_gz_store)
1594                         suf = "log.fz";
1595                 else
1596                         suf = "log";
1597
1598                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1599                                 td->thread_number, suf, o->per_job_logs);
1600                 setup_log(&td->clat_hist_log, &p, logname);
1601         }
1602
1603         if (o->write_bw_log) {
1604                 struct log_params p = {
1605                         .td = td,
1606                         .avg_msec = o->log_avg_msec,
1607                         .hist_msec = o->log_hist_msec,
1608                         .hist_coarseness = o->log_hist_coarseness,
1609                         .log_type = IO_LOG_TYPE_BW,
1610                         .log_offset = o->log_offset,
1611                         .log_gz = o->log_gz,
1612                         .log_gz_store = o->log_gz_store,
1613                 };
1614                 const char *pre = make_log_name(o->bw_log_file, o->name);
1615                 const char *suf;
1616
1617                 if (fio_option_is_set(o, bw_avg_time))
1618                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1619                 else
1620                         o->bw_avg_time = p.avg_msec;
1621
1622                 p.hist_msec = o->log_hist_msec;
1623                 p.hist_coarseness = o->log_hist_coarseness;
1624
1625                 if (p.log_gz_store)
1626                         suf = "log.fz";
1627                 else
1628                         suf = "log";
1629
1630                 gen_log_name(logname, sizeof(logname), "bw", pre,
1631                                 td->thread_number, suf, o->per_job_logs);
1632                 setup_log(&td->bw_log, &p, logname);
1633         }
1634         if (o->write_iops_log) {
1635                 struct log_params p = {
1636                         .td = td,
1637                         .avg_msec = o->log_avg_msec,
1638                         .hist_msec = o->log_hist_msec,
1639                         .hist_coarseness = o->log_hist_coarseness,
1640                         .log_type = IO_LOG_TYPE_IOPS,
1641                         .log_offset = o->log_offset,
1642                         .log_gz = o->log_gz,
1643                         .log_gz_store = o->log_gz_store,
1644                 };
1645                 const char *pre = make_log_name(o->iops_log_file, o->name);
1646                 const char *suf;
1647
1648                 if (fio_option_is_set(o, iops_avg_time))
1649                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1650                 else
1651                         o->iops_avg_time = p.avg_msec;
1652
1653                 p.hist_msec = o->log_hist_msec;
1654                 p.hist_coarseness = o->log_hist_coarseness;
1655
1656                 if (p.log_gz_store)
1657                         suf = "log.fz";
1658                 else
1659                         suf = "log";
1660
1661                 gen_log_name(logname, sizeof(logname), "iops", pre,
1662                                 td->thread_number, suf, o->per_job_logs);
1663                 setup_log(&td->iops_log, &p, logname);
1664         }
1665
1666         if (!o->name)
1667                 o->name = strdup(jobname);
1668
1669         if (output_format & FIO_OUTPUT_NORMAL) {
1670                 if (!job_add_num) {
1671                         if (is_backend && !recursed)
1672                                 fio_server_send_add_job(td);
1673
1674                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1675                                 char *c1, *c2, *c3, *c4;
1676                                 char *c5 = NULL, *c6 = NULL;
1677                                 int i2p = is_power_of_2(o->kb_base);
1678                                 struct buf_output out;
1679
1680                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1681                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1682                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1683                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1684
1685                                 if (!o->bs_is_seq_rand) {
1686                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1687                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1688                                 }
1689
1690                                 buf_output_init(&out);
1691                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1692                                                         td->groupid,
1693                                                         ddir_str(o->td_ddir));
1694
1695                                 if (o->bs_is_seq_rand)
1696                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1697                                                         c1, c2, c3, c4);
1698                                 else
1699                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1700                                                         c1, c2, c3, c4, c5, c6);
1701
1702                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1703                                                 td->io_ops->name, o->iodepth);
1704                                 log_info_buf(out.buf, out.buflen);
1705                                 buf_output_free(&out);
1706
1707                                 free(c1);
1708                                 free(c2);
1709                                 free(c3);
1710                                 free(c4);
1711                                 free(c5);
1712                                 free(c6);
1713                         }
1714                 } else if (job_add_num == 1)
1715                         log_info("...\n");
1716         }
1717
1718         if (td_steadystate_init(td))
1719                 goto err;
1720
1721         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1722                 goto err;
1723
1724         if (merge_blktrace_only) {
1725                 put_job(td);
1726                 return 0;
1727         }
1728
1729         /*
1730          * recurse add identical jobs, clear numjobs and stonewall options
1731          * as they don't apply to sub-jobs
1732          */
1733         numjobs = o->numjobs;
1734         while (--numjobs) {
1735                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1736
1737                 if (!td_new)
1738                         goto err;
1739
1740                 td_new->o.numjobs = 1;
1741                 td_new->o.stonewall = 0;
1742                 td_new->o.new_group = 0;
1743                 td_new->subjob_number = numjobs;
1744                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1745                 td_new->o.ss_limit = o->ss_limit;
1746
1747                 if (file_alloced) {
1748                         if (td_new->files) {
1749                                 struct fio_file *f;
1750                                 for_each_file(td_new, f, i) {
1751                                         if (f->file_name)
1752                                                 sfree(f->file_name);
1753                                         sfree(f);
1754                                 }
1755                                 free(td_new->files);
1756                                 td_new->files = NULL;
1757                         }
1758                         td_new->files_index = 0;
1759                         td_new->files_size = 0;
1760                         if (td_new->o.filename) {
1761                                 free(td_new->o.filename);
1762                                 td_new->o.filename = NULL;
1763                         }
1764                 }
1765
1766                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1767                         goto err;
1768         }
1769
1770         return 0;
1771 err:
1772         put_job(td);
1773         return -1;
1774 }
1775
1776 /*
1777  * Parse as if 'o' was a command line
1778  */
1779 void add_job_opts(const char **o, int client_type)
1780 {
1781         struct thread_data *td, *td_parent;
1782         int i, in_global = 1;
1783         char jobname[32];
1784
1785         i = 0;
1786         td_parent = td = NULL;
1787         while (o[i]) {
1788                 if (!strncmp(o[i], "name", 4)) {
1789                         in_global = 0;
1790                         if (td)
1791                                 add_job(td, jobname, 0, 0, client_type);
1792                         td = NULL;
1793                         sprintf(jobname, "%s", o[i] + 5);
1794                 }
1795                 if (in_global && !td_parent)
1796                         td_parent = get_new_job(true, &def_thread, false, jobname);
1797                 else if (!in_global && !td) {
1798                         if (!td_parent)
1799                                 td_parent = &def_thread;
1800                         td = get_new_job(false, td_parent, false, jobname);
1801                 }
1802                 if (in_global)
1803                         fio_options_parse(td_parent, (char **) &o[i], 1);
1804                 else
1805                         fio_options_parse(td, (char **) &o[i], 1);
1806                 i++;
1807         }
1808
1809         if (td)
1810                 add_job(td, jobname, 0, 0, client_type);
1811 }
1812
1813 static int skip_this_section(const char *name)
1814 {
1815         int i;
1816
1817         if (!nr_job_sections)
1818                 return 0;
1819         if (!strncmp(name, "global", 6))
1820                 return 0;
1821
1822         for (i = 0; i < nr_job_sections; i++)
1823                 if (!strcmp(job_sections[i], name))
1824                         return 0;
1825
1826         return 1;
1827 }
1828
1829 static int is_empty_or_comment(char *line)
1830 {
1831         unsigned int i;
1832
1833         for (i = 0; i < strlen(line); i++) {
1834                 if (line[i] == ';')
1835                         return 1;
1836                 if (line[i] == '#')
1837                         return 1;
1838                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1839                         return 0;
1840         }
1841
1842         return 1;
1843 }
1844
1845 /*
1846  * This is our [ini] type file parser.
1847  */
1848 static int __parse_jobs_ini(struct thread_data *td,
1849                 char *file, int is_buf, int stonewall_flag, int type,
1850                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1851 {
1852         bool global = false;
1853         char *string;
1854         FILE *f;
1855         char *p;
1856         int ret = 0, stonewall;
1857         int first_sect = 1;
1858         int skip_fgets = 0;
1859         int inside_skip = 0;
1860         char **opts;
1861         int i, alloc_opts, num_opts;
1862
1863         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1864         assert(td || !nested);
1865
1866         if (is_buf)
1867                 f = NULL;
1868         else {
1869                 if (!strcmp(file, "-"))
1870                         f = stdin;
1871                 else
1872                         f = fopen(file, "r");
1873
1874                 if (!f) {
1875                         int __err = errno;
1876
1877                         log_err("fio: unable to open '%s' job file\n", file);
1878                         if (td)
1879                                 td_verror(td, __err, "job file open");
1880                         return 1;
1881                 }
1882         }
1883
1884         string = malloc(OPT_LEN_MAX);
1885
1886         /*
1887          * it's really 256 + small bit, 280 should suffice
1888          */
1889         if (!nested) {
1890                 name = malloc(280);
1891                 memset(name, 0, 280);
1892         }
1893
1894         opts = NULL;
1895         if (nested && popts) {
1896                 opts = *popts;
1897                 alloc_opts = *aopts;
1898                 num_opts = *nopts;
1899         }
1900
1901         if (!opts) {
1902                 alloc_opts = 8;
1903                 opts = malloc(sizeof(char *) * alloc_opts);
1904                 num_opts = 0;
1905         }
1906
1907         stonewall = stonewall_flag;
1908         do {
1909                 /*
1910                  * if skip_fgets is set, we already have loaded a line we
1911                  * haven't handled.
1912                  */
1913                 if (!skip_fgets) {
1914                         if (is_buf)
1915                                 p = strsep(&file, "\n");
1916                         else
1917                                 p = fgets(string, OPT_LEN_MAX, f);
1918                         if (!p)
1919                                 break;
1920                 }
1921
1922                 skip_fgets = 0;
1923                 strip_blank_front(&p);
1924                 strip_blank_end(p);
1925
1926                 dprint(FD_PARSE, "%s\n", p);
1927                 if (is_empty_or_comment(p))
1928                         continue;
1929
1930                 if (!nested) {
1931                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1932                                 if (inside_skip)
1933                                         continue;
1934
1935                                 log_err("fio: option <%s> outside of "
1936                                         "[] job section\n", p);
1937                                 ret = 1;
1938                                 break;
1939                         }
1940
1941                         name[strlen(name) - 1] = '\0';
1942
1943                         if (skip_this_section(name)) {
1944                                 inside_skip = 1;
1945                                 continue;
1946                         } else
1947                                 inside_skip = 0;
1948
1949                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1950
1951                         global = !strncmp(name, "global", 6);
1952
1953                         if (dump_cmdline) {
1954                                 if (first_sect)
1955                                         log_info("fio ");
1956                                 if (!global)
1957                                         log_info("--name=%s ", name);
1958                                 first_sect = 0;
1959                         }
1960
1961                         td = get_new_job(global, &def_thread, false, name);
1962                         if (!td) {
1963                                 ret = 1;
1964                                 break;
1965                         }
1966
1967                         /*
1968                          * Separate multiple job files by a stonewall
1969                          */
1970                         if (!global && stonewall) {
1971                                 td->o.stonewall = stonewall;
1972                                 stonewall = 0;
1973                         }
1974
1975                         num_opts = 0;
1976                         memset(opts, 0, alloc_opts * sizeof(char *));
1977                 }
1978                 else
1979                         skip_fgets = 1;
1980
1981                 while (1) {
1982                         if (!skip_fgets) {
1983                                 if (is_buf)
1984                                         p = strsep(&file, "\n");
1985                                 else
1986                                         p = fgets(string, OPT_LEN_MAX, f);
1987                                 if (!p)
1988                                         break;
1989                                 dprint(FD_PARSE, "%s", p);
1990                         }
1991                         else
1992                                 skip_fgets = 0;
1993
1994                         if (is_empty_or_comment(p))
1995                                 continue;
1996
1997                         strip_blank_front(&p);
1998
1999                         /*
2000                          * new section, break out and make sure we don't
2001                          * fgets() a new line at the top.
2002                          */
2003                         if (p[0] == '[') {
2004                                 if (nested) {
2005                                         log_err("No new sections in included files\n");
2006                                         ret = 1;
2007                                         goto out;
2008                                 }
2009
2010                                 skip_fgets = 1;
2011                                 break;
2012                         }
2013
2014                         strip_blank_end(p);
2015
2016                         if (!strncmp(p, "include", strlen("include"))) {
2017                                 char *filename = p + strlen("include") + 1,
2018                                         *ts, *full_fn = NULL;
2019
2020                                 /*
2021                                  * Allow for the include filename
2022                                  * specification to be relative.
2023                                  */
2024                                 if (access(filename, F_OK) &&
2025                                     (ts = strrchr(file, '/'))) {
2026                                         if (asprintf(&full_fn, "%.*s%s",
2027                                                  (int)(ts - file + 1), file,
2028                                                  filename) < 0) {
2029                                                 ret = ENOMEM;
2030                                                 break;
2031                                         }
2032                                         filename = full_fn;
2033                                 }
2034
2035                                 ret = __parse_jobs_ini(td, filename, is_buf,
2036                                                        stonewall_flag, type, 1,
2037                                                        name, &opts,
2038                                                        &alloc_opts, &num_opts);
2039
2040                                 if (ret) {
2041                                         log_err("Error %d while parsing "
2042                                                 "include file %s\n",
2043                                                 ret, filename);
2044                                 }
2045
2046                                 if (full_fn)
2047                                         free(full_fn);
2048
2049                                 if (ret)
2050                                         break;
2051
2052                                 continue;
2053                         }
2054
2055                         if (num_opts == alloc_opts) {
2056                                 alloc_opts <<= 1;
2057                                 opts = realloc(opts,
2058                                                 alloc_opts * sizeof(char *));
2059                         }
2060
2061                         opts[num_opts] = strdup(p);
2062                         num_opts++;
2063                 }
2064
2065                 if (nested) {
2066                         *popts = opts;
2067                         *aopts = alloc_opts;
2068                         *nopts = num_opts;
2069                         goto out;
2070                 }
2071
2072                 ret = fio_options_parse(td, opts, num_opts);
2073                 if (!ret) {
2074                         if (dump_cmdline)
2075                                 dump_opt_list(td);
2076
2077                         ret = add_job(td, name, 0, 0, type);
2078                 } else {
2079                         log_err("fio: job %s dropped\n", name);
2080                         put_job(td);
2081                 }
2082
2083                 for (i = 0; i < num_opts; i++)
2084                         free(opts[i]);
2085                 num_opts = 0;
2086         } while (!ret);
2087
2088         if (dump_cmdline)
2089                 log_info("\n");
2090
2091         i = 0;
2092         while (i < nr_job_sections) {
2093                 free(job_sections[i]);
2094                 i++;
2095         }
2096
2097         free(opts);
2098 out:
2099         free(string);
2100         if (!nested)
2101                 free(name);
2102         if (!is_buf && f != stdin)
2103                 fclose(f);
2104         return ret;
2105 }
2106
2107 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2108 {
2109         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2110                         0, NULL, NULL, NULL, NULL);
2111 }
2112
2113 static int fill_def_thread(void)
2114 {
2115         memset(&def_thread, 0, sizeof(def_thread));
2116         INIT_FLIST_HEAD(&def_thread.opt_list);
2117
2118         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2119         def_thread.o.error_dump = 1;
2120
2121         /*
2122          * fill default options
2123          */
2124         fio_fill_default_options(&def_thread);
2125         return 0;
2126 }
2127
2128 static void show_debug_categories(void)
2129 {
2130 #ifdef FIO_INC_DEBUG
2131         const struct debug_level *dl = &debug_levels[0];
2132         int curlen, first = 1;
2133
2134         curlen = 0;
2135         while (dl->name) {
2136                 int has_next = (dl + 1)->name != NULL;
2137
2138                 if (first || curlen + strlen(dl->name) >= 80) {
2139                         if (!first) {
2140                                 printf("\n");
2141                                 curlen = 0;
2142                         }
2143                         curlen += printf("\t\t\t%s", dl->name);
2144                         curlen += 3 * (8 - 1);
2145                         if (has_next)
2146                                 curlen += printf(",");
2147                 } else {
2148                         curlen += printf("%s", dl->name);
2149                         if (has_next)
2150                                 curlen += printf(",");
2151                 }
2152                 dl++;
2153                 first = 0;
2154         }
2155         printf("\n");
2156 #endif
2157 }
2158
2159 /*
2160  * Following options aren't printed by usage().
2161  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2162  * --latency-log - Deprecated option.
2163  */
2164 static void usage(const char *name)
2165 {
2166         printf("%s\n", fio_version_string);
2167         printf("%s [options] [job options] <job file(s)>\n", name);
2168         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2169         show_debug_categories();
2170         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2171         printf("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2172         printf("  --output\t\tWrite output to file\n");
2173         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2174         printf("  --minimal\t\tMinimal (terse) output\n");
2175         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2176         printf("  --terse-version=type\tSet terse version output format"
2177                 " (default 3, or 2 or 4)\n");
2178         printf("  --version\t\tPrint version info and exit\n");
2179         printf("  --help\t\tPrint this page\n");
2180         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2181         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2182         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2183                 " them\n");
2184         printf("  --enghelp=engine\tPrint ioengine help, or list"
2185                 " available ioengines\n");
2186         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2187                 " cmd\n");
2188         printf("  --showcmd\t\tTurn a job file into command line options\n");
2189         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2190         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2191         printf("  --eta-newline=t\tForce a new line for every 't'");
2192         printf(" period passed\n");
2193         printf("  --status-interval=t\tForce full status dump every");
2194         printf(" 't' period passed\n");
2195         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2196                 " writes\n");
2197         printf("  --section=name\tOnly run specified section in job file,"
2198                 " multiple sections can be specified\n");
2199         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2200                 " (def 16384)\n");
2201         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2202         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2203         printf("  --server=args\t\tStart a backend fio server\n");
2204         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2205         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2206         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2207         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2208                 "\t\t\t(option=system,percpu) or run unit work\n"
2209                 "\t\t\tcalibration only (option=calibrate)\n");
2210 #ifdef CONFIG_ZLIB
2211         printf("  --inflate-log=log\tInflate and output compressed log\n");
2212 #endif
2213         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2214         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2215         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2216         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2217         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2218         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2219 }
2220
2221 #ifdef FIO_INC_DEBUG
2222 const struct debug_level debug_levels[] = {
2223         { .name = "process",
2224           .help = "Process creation/exit logging",
2225           .shift = FD_PROCESS,
2226         },
2227         { .name = "file",
2228           .help = "File related action logging",
2229           .shift = FD_FILE,
2230         },
2231         { .name = "io",
2232           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2233           .shift = FD_IO,
2234         },
2235         { .name = "mem",
2236           .help = "Memory allocation/freeing logging",
2237           .shift = FD_MEM,
2238         },
2239         { .name = "blktrace",
2240           .help = "blktrace action logging",
2241           .shift = FD_BLKTRACE,
2242         },
2243         { .name = "verify",
2244           .help = "IO verification action logging",
2245           .shift = FD_VERIFY,
2246         },
2247         { .name = "random",
2248           .help = "Random generation logging",
2249           .shift = FD_RANDOM,
2250         },
2251         { .name = "parse",
2252           .help = "Parser logging",
2253           .shift = FD_PARSE,
2254         },
2255         { .name = "diskutil",
2256           .help = "Disk utility logging actions",
2257           .shift = FD_DISKUTIL,
2258         },
2259         { .name = "job",
2260           .help = "Logging related to creating/destroying jobs",
2261           .shift = FD_JOB,
2262         },
2263         { .name = "mutex",
2264           .help = "Mutex logging",
2265           .shift = FD_MUTEX
2266         },
2267         { .name = "profile",
2268           .help = "Logging related to profiles",
2269           .shift = FD_PROFILE,
2270         },
2271         { .name = "time",
2272           .help = "Logging related to time keeping functions",
2273           .shift = FD_TIME,
2274         },
2275         { .name = "net",
2276           .help = "Network logging",
2277           .shift = FD_NET,
2278         },
2279         { .name = "rate",
2280           .help = "Rate logging",
2281           .shift = FD_RATE,
2282         },
2283         { .name = "compress",
2284           .help = "Log compression logging",
2285           .shift = FD_COMPRESS,
2286         },
2287         { .name = "steadystate",
2288           .help = "Steady state detection logging",
2289           .shift = FD_STEADYSTATE,
2290         },
2291         { .name = "helperthread",
2292           .help = "Helper thread logging",
2293           .shift = FD_HELPERTHREAD,
2294         },
2295         { .name = "zbd",
2296           .help = "Zoned Block Device logging",
2297           .shift = FD_ZBD,
2298         },
2299         { .name = NULL, },
2300 };
2301
2302 static int set_debug(const char *string)
2303 {
2304         const struct debug_level *dl;
2305         char *p = (char *) string;
2306         char *opt;
2307         int i;
2308
2309         if (!string)
2310                 return 0;
2311
2312         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2313                 log_info("fio: dumping debug options:");
2314                 for (i = 0; debug_levels[i].name; i++) {
2315                         dl = &debug_levels[i];
2316                         log_info("%s,", dl->name);
2317                 }
2318                 log_info("all\n");
2319                 return 1;
2320         }
2321
2322         while ((opt = strsep(&p, ",")) != NULL) {
2323                 int found = 0;
2324
2325                 if (!strncmp(opt, "all", 3)) {
2326                         log_info("fio: set all debug options\n");
2327                         fio_debug = ~0UL;
2328                         continue;
2329                 }
2330
2331                 for (i = 0; debug_levels[i].name; i++) {
2332                         dl = &debug_levels[i];
2333                         found = !strncmp(opt, dl->name, strlen(dl->name));
2334                         if (!found)
2335                                 continue;
2336
2337                         if (dl->shift == FD_JOB) {
2338                                 opt = strchr(opt, ':');
2339                                 if (!opt) {
2340                                         log_err("fio: missing job number\n");
2341                                         break;
2342                                 }
2343                                 opt++;
2344                                 fio_debug_jobno = atoi(opt);
2345                                 log_info("fio: set debug jobno %d\n",
2346                                                         fio_debug_jobno);
2347                         } else {
2348                                 log_info("fio: set debug option %s\n", opt);
2349                                 fio_debug |= (1UL << dl->shift);
2350                         }
2351                         break;
2352                 }
2353
2354                 if (!found)
2355                         log_err("fio: debug mask %s not found\n", opt);
2356         }
2357         return 0;
2358 }
2359 #else
2360 static int set_debug(const char *string)
2361 {
2362         log_err("fio: debug tracing not included in build\n");
2363         return 1;
2364 }
2365 #endif
2366
2367 static void fio_options_fill_optstring(void)
2368 {
2369         char *ostr = cmd_optstr;
2370         int i, c;
2371
2372         c = i = 0;
2373         while (l_opts[i].name) {
2374                 ostr[c++] = l_opts[i].val;
2375                 if (l_opts[i].has_arg == required_argument)
2376                         ostr[c++] = ':';
2377                 else if (l_opts[i].has_arg == optional_argument) {
2378                         ostr[c++] = ':';
2379                         ostr[c++] = ':';
2380                 }
2381                 i++;
2382         }
2383         ostr[c] = '\0';
2384 }
2385
2386 static int client_flag_set(char c)
2387 {
2388         int i;
2389
2390         i = 0;
2391         while (l_opts[i].name) {
2392                 int val = l_opts[i].val;
2393
2394                 if (c == (val & 0xff))
2395                         return (val & FIO_CLIENT_FLAG);
2396
2397                 i++;
2398         }
2399
2400         return 0;
2401 }
2402
2403 static void parse_cmd_client(void *client, char *opt)
2404 {
2405         fio_client_add_cmd_option(client, opt);
2406 }
2407
2408 static void show_closest_option(const char *name)
2409 {
2410         int best_option, best_distance;
2411         int i, distance;
2412
2413         while (*name == '-')
2414                 name++;
2415
2416         best_option = -1;
2417         best_distance = INT_MAX;
2418         i = 0;
2419         while (l_opts[i].name) {
2420                 distance = string_distance(name, l_opts[i].name);
2421                 if (distance < best_distance) {
2422                         best_distance = distance;
2423                         best_option = i;
2424                 }
2425                 i++;
2426         }
2427
2428         if (best_option != -1 && string_distance_ok(name, best_distance))
2429                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2430 }
2431
2432 static int parse_output_format(const char *optarg)
2433 {
2434         char *p, *orig, *opt;
2435         int ret = 0;
2436
2437         p = orig = strdup(optarg);
2438
2439         output_format = 0;
2440
2441         while ((opt = strsep(&p, ",")) != NULL) {
2442                 if (!strcmp(opt, "minimal") ||
2443                     !strcmp(opt, "terse") ||
2444                     !strcmp(opt, "csv"))
2445                         output_format |= FIO_OUTPUT_TERSE;
2446                 else if (!strcmp(opt, "json"))
2447                         output_format |= FIO_OUTPUT_JSON;
2448                 else if (!strcmp(opt, "json+"))
2449                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2450                 else if (!strcmp(opt, "normal"))
2451                         output_format |= FIO_OUTPUT_NORMAL;
2452                 else {
2453                         log_err("fio: invalid output format %s\n", opt);
2454                         ret = 1;
2455                         break;
2456                 }
2457         }
2458
2459         free(orig);
2460         return ret;
2461 }
2462
2463 int parse_cmd_line(int argc, char *argv[], int client_type)
2464 {
2465         struct thread_data *td = NULL;
2466         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2467         char *ostr = cmd_optstr;
2468         char *pid_file = NULL;
2469         void *cur_client = NULL;
2470         bool backend = false;
2471
2472         /*
2473          * Reset optind handling, since we may call this multiple times
2474          * for the backend.
2475          */
2476         optind = 1;
2477
2478         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2479                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2480                         parse_cmd_client(cur_client, argv[optind - 1]);
2481                         c &= ~FIO_CLIENT_FLAG;
2482                 }
2483
2484                 switch (c) {
2485                 case 'a':
2486                         smalloc_pool_size = atoi(optarg);
2487                         smalloc_pool_size <<= 10;
2488                         sinit();
2489                         break;
2490                 case 'l':
2491                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2492                         do_exit++;
2493                         exit_val = 1;
2494                         break;
2495                 case 'b':
2496                         write_bw_log = true;
2497                         break;
2498                 case 'o': {
2499                         FILE *tmp;
2500
2501                         if (f_out && f_out != stdout)
2502                                 fclose(f_out);
2503
2504                         tmp = fopen(optarg, "w+");
2505                         if (!tmp) {
2506                                 log_err("fio: output file open error: %s\n", strerror(errno));
2507                                 exit_val = 1;
2508                                 do_exit++;
2509                                 break;
2510                         }
2511                         f_err = f_out = tmp;
2512                         break;
2513                         }
2514                 case 'm':
2515                         output_format = FIO_OUTPUT_TERSE;
2516                         break;
2517                 case 'F':
2518                         if (parse_output_format(optarg)) {
2519                                 log_err("fio: failed parsing output-format\n");
2520                                 exit_val = 1;
2521                                 do_exit++;
2522                                 break;
2523                         }
2524                         break;
2525                 case 'f':
2526                         output_format |= FIO_OUTPUT_TERSE;
2527                         break;
2528                 case 'h':
2529                         did_arg = true;
2530                         if (!cur_client) {
2531                                 usage(argv[0]);
2532                                 do_exit++;
2533                         }
2534                         break;
2535                 case 'c':
2536                         did_arg = true;
2537                         if (!cur_client) {
2538                                 fio_show_option_help(optarg);
2539                                 do_exit++;
2540                         }
2541                         break;
2542                 case 'i':
2543                         did_arg = true;
2544                         if (!cur_client) {
2545                                 fio_show_ioengine_help(optarg);
2546                                 do_exit++;
2547                         }
2548                         break;
2549                 case 's':
2550                         did_arg = true;
2551                         dump_cmdline = true;
2552                         break;
2553                 case 'r':
2554                         read_only = 1;
2555                         break;
2556                 case 'v':
2557                         did_arg = true;
2558                         if (!cur_client) {
2559                                 log_info("%s\n", fio_version_string);
2560                                 do_exit++;
2561                         }
2562                         break;
2563                 case 'V':
2564                         terse_version = atoi(optarg);
2565                         if (!(terse_version >= 2 && terse_version <= 5)) {
2566                                 log_err("fio: bad terse version format\n");
2567                                 exit_val = 1;
2568                                 do_exit++;
2569                         }
2570                         break;
2571                 case 'e':
2572                         if (!strcmp("always", optarg))
2573                                 eta_print = FIO_ETA_ALWAYS;
2574                         else if (!strcmp("never", optarg))
2575                                 eta_print = FIO_ETA_NEVER;
2576                         break;
2577                 case 'E': {
2578                         long long t = 0;
2579
2580                         if (check_str_time(optarg, &t, 1)) {
2581                                 log_err("fio: failed parsing eta time %s\n", optarg);
2582                                 exit_val = 1;
2583                                 do_exit++;
2584                                 break;
2585                         }
2586                         eta_new_line = t / 1000;
2587                         if (!eta_new_line) {
2588                                 log_err("fio: eta new line time too short\n");
2589                                 exit_val = 1;
2590                                 do_exit++;
2591                         }
2592                         break;
2593                         }
2594                 case 'O': {
2595                         long long t = 0;
2596
2597                         if (check_str_time(optarg, &t, 1)) {
2598                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2599                                 exit_val = 1;
2600                                 do_exit++;
2601                                 break;
2602                         }
2603                         eta_interval_msec = t / 1000;
2604                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2605                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2606                                 exit_val = 1;
2607                                 do_exit++;
2608                         }
2609                         break;
2610                         }
2611                 case 'd':
2612                         if (set_debug(optarg))
2613                                 do_exit++;
2614                         break;
2615                 case 'P':
2616                         did_arg = true;
2617                         parse_only = true;
2618                         break;
2619                 case 'x': {
2620                         size_t new_size;
2621
2622                         if (!strcmp(optarg, "global")) {
2623                                 log_err("fio: can't use global as only "
2624                                         "section\n");
2625                                 do_exit++;
2626                                 exit_val = 1;
2627                                 break;
2628                         }
2629                         new_size = (nr_job_sections + 1) * sizeof(char *);
2630                         job_sections = realloc(job_sections, new_size);
2631                         job_sections[nr_job_sections] = strdup(optarg);
2632                         nr_job_sections++;
2633                         break;
2634                         }
2635 #ifdef CONFIG_ZLIB
2636                 case 'X':
2637                         exit_val = iolog_file_inflate(optarg);
2638                         did_arg = true;
2639                         do_exit++;
2640                         break;
2641 #endif
2642                 case 'p':
2643                         did_arg = true;
2644                         if (exec_profile)
2645                                 free(exec_profile);
2646                         exec_profile = strdup(optarg);
2647                         break;
2648                 case FIO_GETOPT_JOB: {
2649                         const char *opt = l_opts[lidx].name;
2650                         char *val = optarg;
2651
2652                         if (!strncmp(opt, "name", 4) && td) {
2653                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2654                                 if (ret)
2655                                         goto out_free;
2656                                 td = NULL;
2657                                 did_arg = true;
2658                         }
2659                         if (!td) {
2660                                 int is_section = !strncmp(opt, "name", 4);
2661                                 int global = 0;
2662
2663                                 if (!is_section || !strncmp(val, "global", 6))
2664                                         global = 1;
2665
2666                                 if (is_section && skip_this_section(val))
2667                                         continue;
2668
2669                                 td = get_new_job(global, &def_thread, true, NULL);
2670                                 if (!td || ioengine_load(td)) {
2671                                         if (td) {
2672                                                 put_job(td);
2673                                                 td = NULL;
2674                                         }
2675                                         do_exit++;
2676                                         exit_val = 1;
2677                                         break;
2678                                 }
2679                                 fio_options_set_ioengine_opts(l_opts, td);
2680                         }
2681
2682                         if ((!val || !strlen(val)) &&
2683                             l_opts[lidx].has_arg == required_argument) {
2684                                 log_err("fio: option %s requires an argument\n", opt);
2685                                 ret = 1;
2686                         } else
2687                                 ret = fio_cmd_option_parse(td, opt, val);
2688
2689                         if (ret) {
2690                                 if (td) {
2691                                         put_job(td);
2692                                         td = NULL;
2693                                 }
2694                                 do_exit++;
2695                                 exit_val = 1;
2696                         }
2697
2698                         if (!ret && !strcmp(opt, "ioengine")) {
2699                                 if (ioengine_load(td)) {
2700                                         put_job(td);
2701                                         td = NULL;
2702                                         do_exit++;
2703                                         exit_val = 1;
2704                                         break;
2705                                 }
2706                                 fio_options_set_ioengine_opts(l_opts, td);
2707                         }
2708                         break;
2709                 }
2710                 case FIO_GETOPT_IOENGINE: {
2711                         const char *opt = l_opts[lidx].name;
2712                         char *val = optarg;
2713
2714                         if (!td)
2715                                 break;
2716
2717                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2718                         break;
2719                 }
2720                 case 'w':
2721                         warnings_fatal = 1;
2722                         break;
2723                 case 'j':
2724                         max_jobs = atoi(optarg);
2725                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2726                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2727                                 do_exit++;
2728                                 exit_val = 1;
2729                         }
2730                         break;
2731                 case 'S':
2732                         did_arg = true;
2733 #ifndef CONFIG_NO_SHM
2734                         if (nr_clients) {
2735                                 log_err("fio: can't be both client and server\n");
2736                                 do_exit++;
2737                                 exit_val = 1;
2738                                 break;
2739                         }
2740                         if (optarg)
2741                                 fio_server_set_arg(optarg);
2742                         is_backend = true;
2743                         backend = true;
2744 #else
2745                         log_err("fio: client/server requires SHM support\n");
2746                         do_exit++;
2747                         exit_val = 1;
2748 #endif
2749                         break;
2750                 case 'D':
2751                         if (pid_file)
2752                                 free(pid_file);
2753                         pid_file = strdup(optarg);
2754                         break;
2755                 case 'I':
2756                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2757                                 /* exit on error and calibration only */
2758                                 did_arg = true;
2759                                 do_exit++;
2760                                 if (ret == -1)
2761                                         exit_val = 1;
2762                         }
2763                         break;
2764                 case 'C':
2765                         did_arg = true;
2766                         if (is_backend) {
2767                                 log_err("fio: can't be both client and server\n");
2768                                 do_exit++;
2769                                 exit_val = 1;
2770                                 break;
2771                         }
2772                         /* if --client parameter contains a pathname */
2773                         if (0 == access(optarg, R_OK)) {
2774                                 /* file contains a list of host addrs or names */
2775                                 char hostaddr[PATH_MAX] = {0};
2776                                 char formatstr[8];
2777                                 FILE * hostf = fopen(optarg, "r");
2778                                 if (!hostf) {
2779                                         log_err("fio: could not open client list file %s for read\n", optarg);
2780                                         do_exit++;
2781                                         exit_val = 1;
2782                                         break;
2783                                 }
2784                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2785                                 /*
2786                                  * read at most PATH_MAX-1 chars from each
2787                                  * record in this file
2788                                  */
2789                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2790                                         /* expect EVERY host in file to be valid */
2791                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2792                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2793                                                 do_exit++;
2794                                                 exit_val = 1;
2795                                                 break;
2796                                         }
2797                                 }
2798                                 fclose(hostf);
2799                                 break; /* no possibility of job file for "this client only" */
2800                         }
2801                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2802                                 log_err("fio: failed adding client %s\n", optarg);
2803                                 do_exit++;
2804                                 exit_val = 1;
2805                                 break;
2806                         }
2807                         /*
2808                          * If the next argument exists and isn't an option,
2809                          * assume it's a job file for this client only.
2810                          */
2811                         while (optind < argc) {
2812                                 if (!strncmp(argv[optind], "--", 2) ||
2813                                     !strncmp(argv[optind], "-", 1))
2814                                         break;
2815
2816                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2817                                         break;
2818                                 optind++;
2819                         }
2820                         break;
2821                 case 'R':
2822                         did_arg = true;
2823                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2824                                 do_exit++;
2825                                 exit_val = 1;
2826                         }
2827                         break;
2828                 case 'T':
2829                         did_arg = true;
2830                         do_exit++;
2831                         exit_val = fio_monotonic_clocktest(1);
2832                         break;
2833                 case 'G':
2834                         did_arg = true;
2835                         do_exit++;
2836                         exit_val = fio_crctest(optarg);
2837                         break;
2838                 case 'M':
2839                         did_arg = true;
2840                         do_exit++;
2841                         exit_val = fio_memcpy_test(optarg);
2842                         break;
2843                 case 'L': {
2844                         long long val;
2845
2846                         if (check_str_time(optarg, &val, 1)) {
2847                                 log_err("fio: failed parsing time %s\n", optarg);
2848                                 do_exit++;
2849                                 exit_val = 1;
2850                                 break;
2851                         }
2852                         if (val < 1000) {
2853                                 log_err("fio: status interval too small\n");
2854                                 do_exit++;
2855                                 exit_val = 1;
2856                         }
2857                         status_interval = val / 1000;
2858                         break;
2859                         }
2860                 case 'W':
2861                         if (trigger_file)
2862                                 free(trigger_file);
2863                         trigger_file = strdup(optarg);
2864                         break;
2865                 case 'H':
2866                         if (trigger_cmd)
2867                                 free(trigger_cmd);
2868                         trigger_cmd = strdup(optarg);
2869                         break;
2870                 case 'J':
2871                         if (trigger_remote_cmd)
2872                                 free(trigger_remote_cmd);
2873                         trigger_remote_cmd = strdup(optarg);
2874                         break;
2875                 case 'K':
2876                         if (aux_path)
2877                                 free(aux_path);
2878                         aux_path = strdup(optarg);
2879                         break;
2880                 case 'B':
2881                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2882                                 log_err("fio: failed parsing time %s\n", optarg);
2883                                 do_exit++;
2884                                 exit_val = 1;
2885                         }
2886                         trigger_timeout /= 1000000;
2887                         break;
2888
2889                 case 'A':
2890                         did_arg = true;
2891                         merge_blktrace_only = true;
2892                         break;
2893                 case '?':
2894                         log_err("%s: unrecognized option '%s'\n", argv[0],
2895                                                         argv[optind - 1]);
2896                         show_closest_option(argv[optind - 1]);
2897                         /* fall through */
2898                 default:
2899                         do_exit++;
2900                         exit_val = 1;
2901                         break;
2902                 }
2903                 if (do_exit)
2904                         break;
2905         }
2906
2907         if (do_exit && !(is_backend || nr_clients))
2908                 exit(exit_val);
2909
2910         if (nr_clients && fio_clients_connect())
2911                 exit(1);
2912
2913         if (is_backend && backend)
2914                 return fio_start_server(pid_file);
2915         else if (pid_file)
2916                 free(pid_file);
2917
2918         if (td) {
2919                 if (!ret) {
2920                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2921                         if (ret)
2922                                 exit(1);
2923                 }
2924         }
2925
2926         while (!ret && optind < argc) {
2927                 ini_idx++;
2928                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2929                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2930                 optind++;
2931         }
2932
2933 out_free:
2934         return ini_idx;
2935 }
2936
2937 int fio_init_options(void)
2938 {
2939         f_out = stdout;
2940         f_err = stderr;
2941
2942         fio_options_fill_optstring();
2943         fio_options_dup_and_init(l_opts);
2944
2945         atexit(free_shm);
2946
2947         if (fill_def_thread())
2948                 return 1;
2949
2950         return 0;
2951 }
2952
2953 extern int fio_check_options(struct thread_options *);
2954
2955 int parse_options(int argc, char *argv[])
2956 {
2957         const int type = FIO_CLIENT_TYPE_CLI;
2958         int job_files, i;
2959
2960         if (fio_init_options())
2961                 return 1;
2962         if (fio_test_cconv(&def_thread.o))
2963                 log_err("fio: failed internal cconv test\n");
2964
2965         job_files = parse_cmd_line(argc, argv, type);
2966
2967         if (job_files > 0) {
2968                 for (i = 0; i < job_files; i++) {
2969                         if (i && fill_def_thread())
2970                                 return 1;
2971                         if (nr_clients) {
2972                                 if (fio_clients_send_ini(ini_file[i]))
2973                                         return 1;
2974                                 free(ini_file[i]);
2975                         } else if (!is_backend) {
2976                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2977                                         return 1;
2978                                 free(ini_file[i]);
2979                         }
2980                 }
2981         } else if (nr_clients) {
2982                 if (fill_def_thread())
2983                         return 1;
2984                 if (fio_clients_send_ini(NULL))
2985                         return 1;
2986         }
2987
2988         free(ini_file);
2989         fio_options_free(&def_thread);
2990         filesetup_mem_free();
2991
2992         if (!thread_number) {
2993                 if (parse_dryrun())
2994                         return 0;
2995                 if (exec_profile)
2996                         return 0;
2997                 if (is_backend || nr_clients)
2998                         return 0;
2999                 if (did_arg)
3000                         return 0;
3001
3002                 log_err("No job(s) defined\n\n");
3003                 usage(argv[0]);
3004                 return 1;
3005         }
3006
3007         if (output_format & FIO_OUTPUT_NORMAL)
3008                 log_info("%s\n", fio_version_string);
3009
3010         return 0;
3011 }
3012
3013 void options_default_fill(struct thread_options *o)
3014 {
3015         memcpy(o, &def_thread.o, sizeof(*o));
3016 }
3017
3018 struct thread_data *get_global_options(void)
3019 {
3020         return &def_thread;
3021 }