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 int dump_cmdline;
  49 static int parse_only;
  50 static int 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 int exitall_on_terminate = 0;
  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 int is_backend = 0;
  68 int is_local_backend = 0;
  69 int nr_clients = 0;
  70 int log_syslog = 0;
  71
  72 int write_bw_log = 0;
  73 int read_only = 0;
  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          */
 748         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 749             (!(td_write(td) || td_trim(td)) || o->iodepth == 1))
 750                 o->serialize_overlap = 0;
 751         /*
 752          * Currently can't check for overlaps in offload mode
 753          */
 754         if (o->serialize_overlap && o->io_submit_mode == IO_MODE_OFFLOAD) {
 755                 log_err("fio: checking for in-flight overlaps when the "
 756                         "io_submit_mode is offload is not supported\n");
 757                 o->serialize_overlap = 0;
 758                 ret |= warnings_fatal;
 759         }
 760
 761         if (o->nr_files > td->files_index)
 762                 o->nr_files = td->files_index;
 763
 764         if (o->open_files > o->nr_files || !o->open_files)
 765                 o->open_files = o->nr_files;
 766
 767         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 768             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 769             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 770             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 771                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 772                 ret |= 1;
 773         }
 774         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 775             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 776             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 777             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 778             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 779             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 780                 log_err("fio: minimum rate exceeds rate\n");
 781                 ret |= 1;
 782         }
 783
 784         if (!o->timeout && o->time_based) {
 785                 log_err("fio: time_based requires a runtime/timeout setting\n");
 786                 o->time_based = 0;
 787                 ret |= warnings_fatal;
 788         }
 789
 790         if (o->fill_device && !o->size)
 791                 o->size = -1ULL;
 792
 793         if (o->verify != VERIFY_NONE) {
 794                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 795                     (o->filename ||
 796                      !(o->unique_filename &&
 797                        strstr(o->filename_format, "$jobname") &&
 798                        strstr(o->filename_format, "$jobnum") &&
 799                        strstr(o->filename_format, "$filenum")))) {
 800                         log_info("fio: multiple writers may overwrite blocks "
 801                                 "that belong to other jobs. This can cause "
 802                                 "verification failures.\n");
 803                         ret |= warnings_fatal;
 804                 }
 805
 806                 /*
 807                  * Warn if verification is requested but no verification of any
 808                  * kind can be started due to time constraints
 809                  */
 810                 if (td_write(td) && o->do_verify && o->timeout &&
 811                     o->time_based && !td_read(td) && !o->verify_backlog) {
 812                         log_info("fio: verification read phase will never "
 813                                  "start because write phase uses all of "
 814                                  "runtime\n");
 815                         ret |= warnings_fatal;
 816                 }
 817
 818                 if (!fio_option_is_set(o, refill_buffers))
 819                         o->refill_buffers = 1;
 820
 821                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 822                     !o->verify_interval)
 823                         o->verify_interval = o->min_bs[DDIR_WRITE];
 824
 825                 /*
 826                  * Verify interval must be smaller or equal to the
 827                  * write size.
 828                  */
 829                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 830                         o->verify_interval = o->min_bs[DDIR_WRITE];
 831                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 832                         o->verify_interval = o->min_bs[DDIR_READ];
 833
 834                 /*
 835                  * Verify interval must be a factor of both min and max
 836                  * write size
 837                  */
 838                 if (!o->verify_interval ||
 839                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 840                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 841                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 842                                                         o->max_bs[DDIR_WRITE]);
 843         }
 844
 845         if (o->pre_read) {
 846                 if (o->invalidate_cache)
 847                         o->invalidate_cache = 0;
 848                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 849                         log_info("fio: cannot pre-read files with an IO engine"
 850                                  " that isn't seekable. Pre-read disabled.\n");
 851                         ret |= warnings_fatal;
 852                 }
 853         }
 854
 855         if (o->unit_base == N2S_NONE) {
 856                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 857                         o->unit_base = N2S_BITPERSEC;
 858                 else
 859                         o->unit_base = N2S_BYTEPERSEC;
 860         }
 861
 862 #ifndef FIO_HAVE_ANY_FALLOCATE
 863         /* Platform doesn't support any fallocate so force it to none */
 864         o->fallocate_mode = FIO_FALLOCATE_NONE;
 865 #endif
 866
 867 #ifndef CONFIG_FDATASYNC
 868         if (o->fdatasync_blocks) {
 869                 log_info("fio: this platform does not support fdatasync()"
 870                          " falling back to using fsync().  Use the 'fsync'"
 871                          " option instead of 'fdatasync' to get rid of"
 872                          " this warning\n");
 873                 o->fsync_blocks = o->fdatasync_blocks;
 874                 o->fdatasync_blocks = 0;
 875                 ret |= warnings_fatal;
 876         }
 877 #endif
 878
 879 #ifdef WIN32
 880         /*
 881          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 882          * so fail if we're passed those flags
 883          */
 884         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 885                 log_err("fio: Windows does not support direct or non-buffered io with"
 886                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 887                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 888                 ret |= 1;
 889         }
 890 #endif
 891
 892         /*
 893          * For fully compressible data, just zero them at init time.
 894          * It's faster than repeatedly filling it. For non-zero
 895          * compression, we should have refill_buffers set. Set it, unless
 896          * the job file already changed it.
 897          */
 898         if (o->compress_percentage) {
 899                 if (o->compress_percentage == 100) {
 900                         o->zero_buffers = 1;
 901                         o->compress_percentage = 0;
 902                 } else if (!fio_option_is_set(o, refill_buffers)) {
 903                         o->refill_buffers = 1;
 904                         td->flags |= TD_F_REFILL_BUFFERS;
 905                 }
 906         }
 907
 908         /*
 909          * Using a non-uniform random distribution excludes usage of
 910          * a random map
 911          */
 912         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 913                 o->norandommap = 1;
 914
 915         /*
 916          * If size is set but less than the min block size, complain
 917          */
 918         if (o->size && o->size < td_min_bs(td)) {
 919                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 920                         (unsigned long long) o->size, td_min_bs(td));
 921                 ret |= 1;
 922         }
 923
 924         /*
 925          * O_ATOMIC implies O_DIRECT
 926          */
 927         if (o->oatomic)
 928                 o->odirect = 1;
 929
 930         /*
 931          * If randseed is set, that overrides randrepeat
 932          */
 933         if (fio_option_is_set(o, rand_seed))
 934                 o->rand_repeatable = 0;
 935
 936         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 937                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 938                 ret |= 1;
 939         }
 940
 941         if (fio_option_is_set(o, gtod_cpu)) {
 942                 fio_gtod_init();
 943                 fio_gtod_set_cpu(o->gtod_cpu);
 944                 fio_gtod_offload = 1;
 945         }
 946
 947         td->loops = o->loops;
 948         if (!td->loops)
 949                 td->loops = 1;
 950
 951         if (o->block_error_hist && o->nr_files != 1) {
 952                 log_err("fio: block error histogram only available "
 953                         "with a single file per job, but %d files "
 954                         "provided\n", o->nr_files);
 955                 ret |= 1;
 956         }
 957
 958         if (fio_option_is_set(o, clat_percentiles) &&
 959             !fio_option_is_set(o, lat_percentiles)) {
 960                 o->lat_percentiles = !o->clat_percentiles;
 961         } else if (fio_option_is_set(o, lat_percentiles) &&
 962                    !fio_option_is_set(o, clat_percentiles)) {
 963                 o->clat_percentiles = !o->lat_percentiles;
 964         } else if (fio_option_is_set(o, lat_percentiles) &&
 965                    fio_option_is_set(o, clat_percentiles) &&
 966                    o->lat_percentiles && o->clat_percentiles) {
 967                 log_err("fio: lat_percentiles and clat_percentiles are "
 968                         "mutually exclusive\n");
 969                 ret |= 1;
 970         }
 971
 972         if (o->disable_lat)
 973                 o->lat_percentiles = 0;
 974         if (o->disable_clat)
 975                 o->clat_percentiles = 0;
 976
 977         /*
 978          * Fix these up to be nsec internally
 979          */
 980         o->max_latency *= 1000ULL;
 981         o->latency_target *= 1000ULL;
 982         o->latency_window *= 1000ULL;
 983
 984         return ret;
 985 }
 986
 987 static void init_rand_file_service(struct thread_data *td)
 988 {
 989         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 990         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 991
 992         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 993                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 994                 zipf_disable_hash(&td->next_file_zipf);
 995         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 996                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 997                 zipf_disable_hash(&td->next_file_zipf);
 998         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 999                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
1000                 gauss_disable_hash(&td->next_file_gauss);
1001         }
1002 }
1003
1004 void td_fill_verify_state_seed(struct thread_data *td)
1005 {
1006         bool use64;
1007
1008         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1009                 use64 = true;
1010         else
1011                 use64 = false;
1012
1013         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
1014                 use64);
1015 }
1016
1017 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
1018 {
1019         unsigned int read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
1020         unsigned int write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
1021         unsigned int trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
1022         int i;
1023
1024         /*
1025          * trimwrite is special in that we need to generate the same
1026          * offsets to get the "write after trim" effect. If we are
1027          * using bssplit to set buffer length distributions, ensure that
1028          * we seed the trim and write generators identically. Ditto for
1029          * verify, read and writes must have the same seed, if we are doing
1030          * read verify.
1031          */
1032         if (td->o.verify != VERIFY_NONE)
1033                 write_seed = read_seed;
1034         if (td_trimwrite(td))
1035                 trim_seed = write_seed;
1036         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1037         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1038         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1039
1040         td_fill_verify_state_seed(td);
1041         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1042
1043         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1044                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1045         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1046                 init_rand_file_service(td);
1047
1048         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1049         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1050         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1051         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1052         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1053         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1054         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1055         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1056
1057         if (!td_random(td))
1058                 return;
1059
1060         if (td->o.rand_repeatable)
1061                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1062
1063         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1064
1065         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1066                 struct frand_state *s = &td->seq_rand_state[i];
1067
1068                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1069         }
1070 }
1071
1072 void td_fill_rand_seeds(struct thread_data *td)
1073 {
1074         bool use64;
1075
1076         if (td->o.allrand_repeatable) {
1077                 unsigned int i;
1078
1079                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1080                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1081                                 + i;
1082         }
1083
1084         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1085                 use64 = true;
1086         else
1087                 use64 = false;
1088
1089         td_fill_rand_seeds_internal(td, use64);
1090
1091         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1092         frand_copy(&td->buf_state_prev, &td->buf_state);
1093 }
1094
1095 /*
1096  * Initializes the ioengine configured for a job, if it has not been done so
1097  * already.
1098  */
1099 int ioengine_load(struct thread_data *td)
1100 {
1101         if (!td->o.ioengine) {
1102                 log_err("fio: internal fault, no IO engine specified\n");
1103                 return 1;
1104         }
1105
1106         if (td->io_ops) {
1107                 struct ioengine_ops *ops;
1108                 void *dlhandle;
1109
1110                 /* An engine is loaded, but the requested ioengine
1111                  * may have changed.
1112                  */
1113                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1114                         /* The right engine is already loaded */
1115                         return 0;
1116                 }
1117
1118                 /*
1119                  * Name of file and engine may be different, load ops
1120                  * for this name and see if they match. If they do, then
1121                  * the engine is unchanged.
1122                  */
1123                 dlhandle = td->io_ops_dlhandle;
1124                 ops = load_ioengine(td);
1125                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1126                         if (dlhandle)
1127                                 dlclose(dlhandle);
1128                         return 0;
1129                 }
1130
1131                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1132                         dlclose(dlhandle);
1133
1134                 /* Unload the old engine. */
1135                 free_ioengine(td);
1136         }
1137
1138         td->io_ops = load_ioengine(td);
1139         if (!td->io_ops) {
1140                 log_err("fio: failed to load engine\n");
1141                 return 1;
1142         }
1143
1144         if (td->io_ops->option_struct_size && td->io_ops->options) {
1145                 /*
1146                  * In cases where td->eo is set, clone it for a child thread.
1147                  * This requires that the parent thread has the same ioengine,
1148                  * but that requirement must be enforced by the code which
1149                  * cloned the thread.
1150                  */
1151                 void *origeo = td->eo;
1152                 /*
1153                  * Otherwise use the default thread options.
1154                  */
1155                 if (!origeo && td != &def_thread && def_thread.eo &&
1156                     def_thread.io_ops->options == td->io_ops->options)
1157                         origeo = def_thread.eo;
1158
1159                 options_init(td->io_ops->options);
1160                 td->eo = malloc(td->io_ops->option_struct_size);
1161                 /*
1162                  * Use the default thread as an option template if this uses the
1163                  * same options structure and there are non-default options
1164                  * used.
1165                  */
1166                 if (origeo) {
1167                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1168                         options_mem_dupe(td->io_ops->options, td->eo);
1169                 } else {
1170                         memset(td->eo, 0, td->io_ops->option_struct_size);
1171                         fill_default_options(td->eo, td->io_ops->options);
1172                 }
1173                 *(struct thread_data **)td->eo = td;
1174         }
1175
1176         if (td->o.odirect)
1177                 td->io_ops->flags |= FIO_RAWIO;
1178
1179         td_set_ioengine_flags(td);
1180         return 0;
1181 }
1182
1183 static void init_flags(struct thread_data *td)
1184 {
1185         struct thread_options *o = &td->o;
1186         int i;
1187
1188         if (o->verify_backlog)
1189                 td->flags |= TD_F_VER_BACKLOG;
1190         if (o->trim_backlog)
1191                 td->flags |= TD_F_TRIM_BACKLOG;
1192         if (o->read_iolog_file)
1193                 td->flags |= TD_F_READ_IOLOG;
1194         if (o->refill_buffers)
1195                 td->flags |= TD_F_REFILL_BUFFERS;
1196         /*
1197          * Always scramble buffers if asked to
1198          */
1199         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1200                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1201         /*
1202          * But also scramble buffers, unless we were explicitly asked
1203          * to zero them.
1204          */
1205         if (o->scramble_buffers && !(o->zero_buffers &&
1206             fio_option_is_set(o, zero_buffers)))
1207                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1208         if (o->verify != VERIFY_NONE)
1209                 td->flags |= TD_F_DO_VERIFY;
1210
1211         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1212                 td->flags |= TD_F_NEED_LOCK;
1213
1214         if (o->mem_type == MEM_CUDA_MALLOC)
1215                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1216
1217         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1218                 if (option_check_rate(td, i)) {
1219                         td->flags |= TD_F_CHECK_RATE;
1220                         break;
1221                 }
1222         }
1223 }
1224
1225 static int setup_random_seeds(struct thread_data *td)
1226 {
1227         unsigned long seed;
1228         unsigned int i;
1229
1230         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1231                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1232                 if (!ret)
1233                         td_fill_rand_seeds(td);
1234                 return ret;
1235         }
1236
1237         seed = td->o.rand_seed;
1238         for (i = 0; i < 4; i++)
1239                 seed *= 0x9e370001UL;
1240
1241         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1242                 td->rand_seeds[i] = seed * td->thread_number + i;
1243                 seed *= 0x9e370001UL;
1244         }
1245
1246         td_fill_rand_seeds(td);
1247         return 0;
1248 }
1249
1250 enum {
1251         FPRE_NONE = 0,
1252         FPRE_JOBNAME,
1253         FPRE_JOBNUM,
1254         FPRE_FILENUM
1255 };
1256
1257 static struct fpre_keyword {
1258         const char *keyword;
1259         size_t strlen;
1260         int key;
1261 } fpre_keywords[] = {
1262         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1263         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1264         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1265         { .keyword = NULL, },
1266         };
1267
1268 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1269                            const char *jobname, int jobnum, int filenum)
1270 {
1271         struct fpre_keyword *f;
1272         char copy[PATH_MAX];
1273         size_t dst_left = PATH_MAX - 1;
1274
1275         if (!o->filename_format || !strlen(o->filename_format)) {
1276                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1277                 return buf;
1278         }
1279
1280         for (f = &fpre_keywords[0]; f->keyword; f++)
1281                 f->strlen = strlen(f->keyword);
1282
1283         buf[buf_size - 1] = '\0';
1284         strncpy(buf, o->filename_format, buf_size - 1);
1285
1286         memset(copy, 0, sizeof(copy));
1287         for (f = &fpre_keywords[0]; f->keyword; f++) {
1288                 do {
1289                         size_t pre_len, post_start = 0;
1290                         char *str, *dst = copy;
1291
1292                         str = strcasestr(buf, f->keyword);
1293                         if (!str)
1294                                 break;
1295
1296                         pre_len = str - buf;
1297                         if (strlen(str) != f->strlen)
1298                                 post_start = pre_len + f->strlen;
1299
1300                         if (pre_len) {
1301                                 strncpy(dst, buf, pre_len);
1302                                 dst += pre_len;
1303                                 dst_left -= pre_len;
1304                         }
1305
1306                         switch (f->key) {
1307                         case FPRE_JOBNAME: {
1308                                 int ret;
1309
1310                                 ret = snprintf(dst, dst_left, "%s", jobname);
1311                                 if (ret < 0)
1312                                         break;
1313                                 else if (ret > dst_left) {
1314                                         log_err("fio: truncated filename\n");
1315                                         dst += dst_left;
1316                                         dst_left = 0;
1317                                 } else {
1318                                         dst += ret;
1319                                         dst_left -= ret;
1320                                 }
1321                                 break;
1322                                 }
1323                         case FPRE_JOBNUM: {
1324                                 int ret;
1325
1326                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1327                                 if (ret < 0)
1328                                         break;
1329                                 else if (ret > dst_left) {
1330                                         log_err("fio: truncated filename\n");
1331                                         dst += dst_left;
1332                                         dst_left = 0;
1333                                 } else {
1334                                         dst += ret;
1335                                         dst_left -= ret;
1336                                 }
1337                                 break;
1338                                 }
1339                         case FPRE_FILENUM: {
1340                                 int ret;
1341
1342                                 ret = snprintf(dst, dst_left, "%d", filenum);
1343                                 if (ret < 0)
1344                                         break;
1345                                 else if (ret > dst_left) {
1346                                         log_err("fio: truncated filename\n");
1347                                         dst += dst_left;
1348                                         dst_left = 0;
1349                                 } else {
1350                                         dst += ret;
1351                                         dst_left -= ret;
1352                                 }
1353                                 break;
1354                                 }
1355                         default:
1356                                 assert(0);
1357                                 break;
1358                         }
1359
1360                         if (post_start)
1361                                 strncpy(dst, buf + post_start, dst_left);
1362
1363                         strncpy(buf, copy, buf_size - 1);
1364                 } while (1);
1365         }
1366
1367         return buf;
1368 }
1369
1370 bool parse_dryrun(void)
1371 {
1372         return dump_cmdline || parse_only;
1373 }
1374
1375 static void gen_log_name(char *name, size_t size, const char *logtype,
1376                          const char *logname, unsigned int num,
1377                          const char *suf, int per_job)
1378 {
1379         if (per_job)
1380                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1381         else
1382                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1383 }
1384
1385 static int check_waitees(char *waitee)
1386 {
1387         struct thread_data *td;
1388         int i, ret = 0;
1389
1390         for_each_td(td, i) {
1391                 if (td->subjob_number)
1392                         continue;
1393
1394                 ret += !strcmp(td->o.name, waitee);
1395         }
1396
1397         return ret;
1398 }
1399
1400 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1401 {
1402         int nw;
1403
1404         if (!o->wait_for)
1405                 return true;
1406
1407         if (!strcmp(jobname, o->wait_for)) {
1408                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1409                                 jobname, o->wait_for);
1410                 return false;
1411         }
1412
1413         if (!(nw = check_waitees(o->wait_for))) {
1414                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1415                 return false;
1416         }
1417
1418         if (nw > 1) {
1419                 log_err("%s: multiple waitees %s found,\n"
1420                         "please avoid duplicates when using wait_for option.\n",
1421                                 jobname, o->wait_for);
1422                 return false;
1423         }
1424
1425         return true;
1426 }
1427
1428 /*
1429  * Treat an empty log file name the same as a one not given
1430  */
1431 static const char *make_log_name(const char *logname, const char *jobname)
1432 {
1433         if (logname && strcmp(logname, ""))
1434                 return logname;
1435
1436         return jobname;
1437 }
1438
1439 /*
1440  * Adds a job to the list of things todo. Sanitizes the various options
1441  * to make sure we don't have conflicts, and initializes various
1442  * members of td.
1443  */
1444 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1445                    int recursed, int client_type)
1446 {
1447         unsigned int i;
1448         char fname[PATH_MAX];
1449         int numjobs, file_alloced;
1450         struct thread_options *o = &td->o;
1451         char logname[PATH_MAX + 32];
1452
1453         /*
1454          * the def_thread is just for options, it's not a real job
1455          */
1456         if (td == &def_thread)
1457                 return 0;
1458
1459         init_flags(td);
1460
1461         /*
1462          * if we are just dumping the output command line, don't add the job
1463          */
1464         if (parse_dryrun()) {
1465                 put_job(td);
1466                 return 0;
1467         }
1468
1469         td->client_type = client_type;
1470
1471         if (profile_td_init(td))
1472                 goto err;
1473
1474         if (ioengine_load(td))
1475                 goto err;
1476
1477         file_alloced = 0;
1478         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1479                 file_alloced = 1;
1480
1481                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1482                         add_file(td, jobname, job_add_num, 0);
1483                 else {
1484                         for (i = 0; i < o->nr_files; i++)
1485                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1486                 }
1487         }
1488
1489         if (setup_random_seeds(td)) {
1490                 td_verror(td, errno, "setup_random_seeds");
1491                 goto err;
1492         }
1493
1494         if (fixup_options(td))
1495                 goto err;
1496
1497         /*
1498          * Belongs to fixup_options, but o->name is not necessarily set as yet
1499          */
1500         if (!wait_for_ok(jobname, o))
1501                 goto err;
1502
1503         flow_init_job(td);
1504
1505         /*
1506          * IO engines only need this for option callbacks, and the address may
1507          * change in subprocesses.
1508          */
1509         if (td->eo)
1510                 *(struct thread_data **)td->eo = NULL;
1511
1512         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1513                 struct fio_file *f;
1514
1515                 for_each_file(td, f, i)
1516                         f->real_file_size = -1ULL;
1517         }
1518
1519         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1520
1521         td->ts.clat_percentiles = o->clat_percentiles;
1522         td->ts.lat_percentiles = o->lat_percentiles;
1523         td->ts.percentile_precision = o->percentile_precision;
1524         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1525         td->ts.sig_figs = o->sig_figs;
1526
1527         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1528                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1529                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1530                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1531                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1532                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1533         }
1534         td->ts.sync_stat.min_val = ULONG_MAX;
1535         td->ddir_seq_nr = o->ddir_seq_nr;
1536
1537         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1538                 prev_group_jobs = 0;
1539                 groupid++;
1540                 if (groupid == INT_MAX) {
1541                         log_err("fio: too many groups defined\n");
1542                         goto err;
1543                 }
1544         }
1545
1546         td->groupid = groupid;
1547         prev_group_jobs++;
1548
1549         if (setup_rate(td))
1550                 goto err;
1551
1552         if (o->write_lat_log) {
1553                 struct log_params p = {
1554                         .td = td,
1555                         .avg_msec = o->log_avg_msec,
1556                         .hist_msec = o->log_hist_msec,
1557                         .hist_coarseness = o->log_hist_coarseness,
1558                         .log_type = IO_LOG_TYPE_LAT,
1559                         .log_offset = o->log_offset,
1560                         .log_gz = o->log_gz,
1561                         .log_gz_store = o->log_gz_store,
1562                 };
1563                 const char *pre = make_log_name(o->lat_log_file, o->name);
1564                 const char *suf;
1565
1566                 if (p.log_gz_store)
1567                         suf = "log.fz";
1568                 else
1569                         suf = "log";
1570
1571                 gen_log_name(logname, sizeof(logname), "lat", pre,
1572                                 td->thread_number, suf, o->per_job_logs);
1573                 setup_log(&td->lat_log, &p, logname);
1574
1575                 gen_log_name(logname, sizeof(logname), "slat", pre,
1576                                 td->thread_number, suf, o->per_job_logs);
1577                 setup_log(&td->slat_log, &p, logname);
1578
1579                 gen_log_name(logname, sizeof(logname), "clat", pre,
1580                                 td->thread_number, suf, o->per_job_logs);
1581                 setup_log(&td->clat_log, &p, logname);
1582
1583         }
1584
1585         if (o->write_hist_log) {
1586                 struct log_params p = {
1587                         .td = td,
1588                         .avg_msec = o->log_avg_msec,
1589                         .hist_msec = o->log_hist_msec,
1590                         .hist_coarseness = o->log_hist_coarseness,
1591                         .log_type = IO_LOG_TYPE_HIST,
1592                         .log_offset = o->log_offset,
1593                         .log_gz = o->log_gz,
1594                         .log_gz_store = o->log_gz_store,
1595                 };
1596                 const char *pre = make_log_name(o->hist_log_file, o->name);
1597                 const char *suf;
1598
1599 #ifndef CONFIG_ZLIB
1600                 if (td->client_type) {
1601                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1602                         goto err;
1603                 }
1604 #endif
1605
1606                 if (p.log_gz_store)
1607                         suf = "log.fz";
1608                 else
1609                         suf = "log";
1610
1611                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1612                                 td->thread_number, suf, o->per_job_logs);
1613                 setup_log(&td->clat_hist_log, &p, logname);
1614         }
1615
1616         if (o->write_bw_log) {
1617                 struct log_params p = {
1618                         .td = td,
1619                         .avg_msec = o->log_avg_msec,
1620                         .hist_msec = o->log_hist_msec,
1621                         .hist_coarseness = o->log_hist_coarseness,
1622                         .log_type = IO_LOG_TYPE_BW,
1623                         .log_offset = o->log_offset,
1624                         .log_gz = o->log_gz,
1625                         .log_gz_store = o->log_gz_store,
1626                 };
1627                 const char *pre = make_log_name(o->bw_log_file, o->name);
1628                 const char *suf;
1629
1630                 if (fio_option_is_set(o, bw_avg_time))
1631                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1632                 else
1633                         o->bw_avg_time = p.avg_msec;
1634
1635                 p.hist_msec = o->log_hist_msec;
1636                 p.hist_coarseness = o->log_hist_coarseness;
1637
1638                 if (p.log_gz_store)
1639                         suf = "log.fz";
1640                 else
1641                         suf = "log";
1642
1643                 gen_log_name(logname, sizeof(logname), "bw", pre,
1644                                 td->thread_number, suf, o->per_job_logs);
1645                 setup_log(&td->bw_log, &p, logname);
1646         }
1647         if (o->write_iops_log) {
1648                 struct log_params p = {
1649                         .td = td,
1650                         .avg_msec = o->log_avg_msec,
1651                         .hist_msec = o->log_hist_msec,
1652                         .hist_coarseness = o->log_hist_coarseness,
1653                         .log_type = IO_LOG_TYPE_IOPS,
1654                         .log_offset = o->log_offset,
1655                         .log_gz = o->log_gz,
1656                         .log_gz_store = o->log_gz_store,
1657                 };
1658                 const char *pre = make_log_name(o->iops_log_file, o->name);
1659                 const char *suf;
1660
1661                 if (fio_option_is_set(o, iops_avg_time))
1662                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1663                 else
1664                         o->iops_avg_time = p.avg_msec;
1665
1666                 p.hist_msec = o->log_hist_msec;
1667                 p.hist_coarseness = o->log_hist_coarseness;
1668
1669                 if (p.log_gz_store)
1670                         suf = "log.fz";
1671                 else
1672                         suf = "log";
1673
1674                 gen_log_name(logname, sizeof(logname), "iops", pre,
1675                                 td->thread_number, suf, o->per_job_logs);
1676                 setup_log(&td->iops_log, &p, logname);
1677         }
1678
1679         if (!o->name)
1680                 o->name = strdup(jobname);
1681
1682         if (output_format & FIO_OUTPUT_NORMAL) {
1683                 if (!job_add_num) {
1684                         if (is_backend && !recursed)
1685                                 fio_server_send_add_job(td);
1686
1687                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1688                                 char *c1, *c2, *c3, *c4;
1689                                 char *c5 = NULL, *c6 = NULL;
1690                                 int i2p = is_power_of_2(o->kb_base);
1691                                 struct buf_output out;
1692
1693                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1694                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1695                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1696                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1697
1698                                 if (!o->bs_is_seq_rand) {
1699                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1700                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1701                                 }
1702
1703                                 buf_output_init(&out);
1704                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1705                                                         td->groupid,
1706                                                         ddir_str(o->td_ddir));
1707
1708                                 if (o->bs_is_seq_rand)
1709                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1710                                                         c1, c2, c3, c4);
1711                                 else
1712                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1713                                                         c1, c2, c3, c4, c5, c6);
1714
1715                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1716                                                 td->io_ops->name, o->iodepth);
1717                                 log_info_buf(out.buf, out.buflen);
1718                                 buf_output_free(&out);
1719
1720                                 free(c1);
1721                                 free(c2);
1722                                 free(c3);
1723                                 free(c4);
1724                                 free(c5);
1725                                 free(c6);
1726                         }
1727                 } else if (job_add_num == 1)
1728                         log_info("...\n");
1729         }
1730
1731         if (td_steadystate_init(td))
1732                 goto err;
1733
1734         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1735                 goto err;
1736
1737         if (merge_blktrace_only) {
1738                 put_job(td);
1739                 return 0;
1740         }
1741
1742         /*
1743          * recurse add identical jobs, clear numjobs and stonewall options
1744          * as they don't apply to sub-jobs
1745          */
1746         numjobs = o->numjobs;
1747         while (--numjobs) {
1748                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1749
1750                 if (!td_new)
1751                         goto err;
1752
1753                 td_new->o.numjobs = 1;
1754                 td_new->o.stonewall = 0;
1755                 td_new->o.new_group = 0;
1756                 td_new->subjob_number = numjobs;
1757                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1758                 td_new->o.ss_limit = o->ss_limit;
1759
1760                 if (file_alloced) {
1761                         if (td_new->files) {
1762                                 struct fio_file *f;
1763                                 for_each_file(td_new, f, i) {
1764                                         if (f->file_name)
1765                                                 sfree(f->file_name);
1766                                         sfree(f);
1767                                 }
1768                                 free(td_new->files);
1769                                 td_new->files = NULL;
1770                         }
1771                         td_new->files_index = 0;
1772                         td_new->files_size = 0;
1773                         if (td_new->o.filename) {
1774                                 free(td_new->o.filename);
1775                                 td_new->o.filename = NULL;
1776                         }
1777                 }
1778
1779                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1780                         goto err;
1781         }
1782
1783         return 0;
1784 err:
1785         put_job(td);
1786         return -1;
1787 }
1788
1789 /*
1790  * Parse as if 'o' was a command line
1791  */
1792 void add_job_opts(const char **o, int client_type)
1793 {
1794         struct thread_data *td, *td_parent;
1795         int i, in_global = 1;
1796         char jobname[32];
1797
1798         i = 0;
1799         td_parent = td = NULL;
1800         while (o[i]) {
1801                 if (!strncmp(o[i], "name", 4)) {
1802                         in_global = 0;
1803                         if (td)
1804                                 add_job(td, jobname, 0, 0, client_type);
1805                         td = NULL;
1806                         sprintf(jobname, "%s", o[i] + 5);
1807                 }
1808                 if (in_global && !td_parent)
1809                         td_parent = get_new_job(true, &def_thread, false, jobname);
1810                 else if (!in_global && !td) {
1811                         if (!td_parent)
1812                                 td_parent = &def_thread;
1813                         td = get_new_job(false, td_parent, false, jobname);
1814                 }
1815                 if (in_global)
1816                         fio_options_parse(td_parent, (char **) &o[i], 1);
1817                 else
1818                         fio_options_parse(td, (char **) &o[i], 1);
1819                 i++;
1820         }
1821
1822         if (td)
1823                 add_job(td, jobname, 0, 0, client_type);
1824 }
1825
1826 static int skip_this_section(const char *name)
1827 {
1828         int i;
1829
1830         if (!nr_job_sections)
1831                 return 0;
1832         if (!strncmp(name, "global", 6))
1833                 return 0;
1834
1835         for (i = 0; i < nr_job_sections; i++)
1836                 if (!strcmp(job_sections[i], name))
1837                         return 0;
1838
1839         return 1;
1840 }
1841
1842 static int is_empty_or_comment(char *line)
1843 {
1844         unsigned int i;
1845
1846         for (i = 0; i < strlen(line); i++) {
1847                 if (line[i] == ';')
1848                         return 1;
1849                 if (line[i] == '#')
1850                         return 1;
1851                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1852                         return 0;
1853         }
1854
1855         return 1;
1856 }
1857
1858 /*
1859  * This is our [ini] type file parser.
1860  */
1861 static int __parse_jobs_ini(struct thread_data *td,
1862                 char *file, int is_buf, int stonewall_flag, int type,
1863                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1864 {
1865         bool global = false;
1866         char *string;
1867         FILE *f;
1868         char *p;
1869         int ret = 0, stonewall;
1870         int first_sect = 1;
1871         int skip_fgets = 0;
1872         int inside_skip = 0;
1873         char **opts;
1874         int i, alloc_opts, num_opts;
1875
1876         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1877         assert(td || !nested);
1878
1879         if (is_buf)
1880                 f = NULL;
1881         else {
1882                 if (!strcmp(file, "-"))
1883                         f = stdin;
1884                 else
1885                         f = fopen(file, "r");
1886
1887                 if (!f) {
1888                         int __err = errno;
1889
1890                         log_err("fio: unable to open '%s' job file\n", file);
1891                         if (td)
1892                                 td_verror(td, __err, "job file open");
1893                         return 1;
1894                 }
1895         }
1896
1897         string = malloc(4096);
1898
1899         /*
1900          * it's really 256 + small bit, 280 should suffice
1901          */
1902         if (!nested) {
1903                 name = malloc(280);
1904                 memset(name, 0, 280);
1905         }
1906
1907         opts = NULL;
1908         if (nested && popts) {
1909                 opts = *popts;
1910                 alloc_opts = *aopts;
1911                 num_opts = *nopts;
1912         }
1913
1914         if (!opts) {
1915                 alloc_opts = 8;
1916                 opts = malloc(sizeof(char *) * alloc_opts);
1917                 num_opts = 0;
1918         }
1919
1920         stonewall = stonewall_flag;
1921         do {
1922                 /*
1923                  * if skip_fgets is set, we already have loaded a line we
1924                  * haven't handled.
1925                  */
1926                 if (!skip_fgets) {
1927                         if (is_buf)
1928                                 p = strsep(&file, "\n");
1929                         else
1930                                 p = fgets(string, 4096, f);
1931                         if (!p)
1932                                 break;
1933                 }
1934
1935                 skip_fgets = 0;
1936                 strip_blank_front(&p);
1937                 strip_blank_end(p);
1938
1939                 dprint(FD_PARSE, "%s\n", p);
1940                 if (is_empty_or_comment(p))
1941                         continue;
1942
1943                 if (!nested) {
1944                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1945                                 if (inside_skip)
1946                                         continue;
1947
1948                                 log_err("fio: option <%s> outside of "
1949                                         "[] job section\n", p);
1950                                 ret = 1;
1951                                 break;
1952                         }
1953
1954                         name[strlen(name) - 1] = '\0';
1955
1956                         if (skip_this_section(name)) {
1957                                 inside_skip = 1;
1958                                 continue;
1959                         } else
1960                                 inside_skip = 0;
1961
1962                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1963
1964                         global = !strncmp(name, "global", 6);
1965
1966                         if (dump_cmdline) {
1967                                 if (first_sect)
1968                                         log_info("fio ");
1969                                 if (!global)
1970                                         log_info("--name=%s ", name);
1971                                 first_sect = 0;
1972                         }
1973
1974                         td = get_new_job(global, &def_thread, false, name);
1975                         if (!td) {
1976                                 ret = 1;
1977                                 break;
1978                         }
1979
1980                         /*
1981                          * Separate multiple job files by a stonewall
1982                          */
1983                         if (!global && stonewall) {
1984                                 td->o.stonewall = stonewall;
1985                                 stonewall = 0;
1986                         }
1987
1988                         num_opts = 0;
1989                         memset(opts, 0, alloc_opts * sizeof(char *));
1990                 }
1991                 else
1992                         skip_fgets = 1;
1993
1994                 while (1) {
1995                         if (!skip_fgets) {
1996                                 if (is_buf)
1997                                         p = strsep(&file, "\n");
1998                                 else
1999                                         p = fgets(string, 4096, f);
2000                                 if (!p)
2001                                         break;
2002                                 dprint(FD_PARSE, "%s", p);
2003                         }
2004                         else
2005                                 skip_fgets = 0;
2006
2007                         if (is_empty_or_comment(p))
2008                                 continue;
2009
2010                         strip_blank_front(&p);
2011
2012                         /*
2013                          * new section, break out and make sure we don't
2014                          * fgets() a new line at the top.
2015                          */
2016                         if (p[0] == '[') {
2017                                 if (nested) {
2018                                         log_err("No new sections in included files\n");
2019                                         ret = 1;
2020                                         goto out;
2021                                 }
2022
2023                                 skip_fgets = 1;
2024                                 break;
2025                         }
2026
2027                         strip_blank_end(p);
2028
2029                         if (!strncmp(p, "include", strlen("include"))) {
2030                                 char *filename = p + strlen("include") + 1,
2031                                         *ts, *full_fn = NULL;
2032
2033                                 /*
2034                                  * Allow for the include filename
2035                                  * specification to be relative.
2036                                  */
2037                                 if (access(filename, F_OK) &&
2038                                     (ts = strrchr(file, '/'))) {
2039                                         int len = ts - file +
2040                                                 strlen(filename) + 2;
2041
2042                                         if (!(full_fn = calloc(1, len))) {
2043                                                 ret = ENOMEM;
2044                                                 break;
2045                                         }
2046
2047                                         strncpy(full_fn,
2048                                                 file, (ts - file) + 1);
2049                                         strncpy(full_fn + (ts - file) + 1,
2050                                                 filename, strlen(filename));
2051                                         full_fn[len - 1] = 0;
2052                                         filename = full_fn;
2053                                 }
2054
2055                                 ret = __parse_jobs_ini(td, filename, is_buf,
2056                                                        stonewall_flag, type, 1,
2057                                                        name, &opts,
2058                                                        &alloc_opts, &num_opts);
2059
2060                                 if (ret) {
2061                                         log_err("Error %d while parsing "
2062                                                 "include file %s\n",
2063                                                 ret, filename);
2064                                 }
2065
2066                                 if (full_fn)
2067                                         free(full_fn);
2068
2069                                 if (ret)
2070                                         break;
2071
2072                                 continue;
2073                         }
2074
2075                         if (num_opts == alloc_opts) {
2076                                 alloc_opts <<= 1;
2077                                 opts = realloc(opts,
2078                                                 alloc_opts * sizeof(char *));
2079                         }
2080
2081                         opts[num_opts] = strdup(p);
2082                         num_opts++;
2083                 }
2084
2085                 if (nested) {
2086                         *popts = opts;
2087                         *aopts = alloc_opts;
2088                         *nopts = num_opts;
2089                         goto out;
2090                 }
2091
2092                 ret = fio_options_parse(td, opts, num_opts);
2093                 if (!ret) {
2094                         if (dump_cmdline)
2095                                 dump_opt_list(td);
2096
2097                         ret = add_job(td, name, 0, 0, type);
2098                 } else {
2099                         log_err("fio: job %s dropped\n", name);
2100                         put_job(td);
2101                 }
2102
2103                 for (i = 0; i < num_opts; i++)
2104                         free(opts[i]);
2105                 num_opts = 0;
2106         } while (!ret);
2107
2108         if (dump_cmdline)
2109                 log_info("\n");
2110
2111         i = 0;
2112         while (i < nr_job_sections) {
2113                 free(job_sections[i]);
2114                 i++;
2115         }
2116
2117         free(opts);
2118 out:
2119         free(string);
2120         if (!nested)
2121                 free(name);
2122         if (!is_buf && f != stdin)
2123                 fclose(f);
2124         return ret;
2125 }
2126
2127 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2128 {
2129         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2130                         0, NULL, NULL, NULL, NULL);
2131 }
2132
2133 static int fill_def_thread(void)
2134 {
2135         memset(&def_thread, 0, sizeof(def_thread));
2136         INIT_FLIST_HEAD(&def_thread.opt_list);
2137
2138         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2139         def_thread.o.error_dump = 1;
2140
2141         /*
2142          * fill default options
2143          */
2144         fio_fill_default_options(&def_thread);
2145         return 0;
2146 }
2147
2148 static void show_debug_categories(void)
2149 {
2150 #ifdef FIO_INC_DEBUG
2151         const struct debug_level *dl = &debug_levels[0];
2152         int curlen, first = 1;
2153
2154         curlen = 0;
2155         while (dl->name) {
2156                 int has_next = (dl + 1)->name != NULL;
2157
2158                 if (first || curlen + strlen(dl->name) >= 80) {
2159                         if (!first) {
2160                                 printf("\n");
2161                                 curlen = 0;
2162                         }
2163                         curlen += printf("\t\t\t%s", dl->name);
2164                         curlen += 3 * (8 - 1);
2165                         if (has_next)
2166                                 curlen += printf(",");
2167                 } else {
2168                         curlen += printf("%s", dl->name);
2169                         if (has_next)
2170                                 curlen += printf(",");
2171                 }
2172                 dl++;
2173                 first = 0;
2174         }
2175         printf("\n");
2176 #endif
2177 }
2178
2179 /*
2180  * Following options aren't printed by usage().
2181  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2182  * --latency-log - Deprecated option.
2183  */
2184 static void usage(const char *name)
2185 {
2186         printf("%s\n", fio_version_string);
2187         printf("%s [options] [job options] <job file(s)>\n", name);
2188         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2189         show_debug_categories();
2190         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2191         printf("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2192         printf("  --output\t\tWrite output to file\n");
2193         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2194         printf("  --minimal\t\tMinimal (terse) output\n");
2195         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2196         printf("  --terse-version=type\tSet terse version output format"
2197                 " (default 3, or 2 or 4)\n");
2198         printf("  --version\t\tPrint version info and exit\n");
2199         printf("  --help\t\tPrint this page\n");
2200         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2201         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2202         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2203                 " them\n");
2204         printf("  --enghelp=engine\tPrint ioengine help, or list"
2205                 " available ioengines\n");
2206         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2207                 " cmd\n");
2208         printf("  --showcmd\t\tTurn a job file into command line options\n");
2209         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2210         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2211         printf("  --eta-newline=t\tForce a new line for every 't'");
2212         printf(" period passed\n");
2213         printf("  --status-interval=t\tForce full status dump every");
2214         printf(" 't' period passed\n");
2215         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2216                 " writes\n");
2217         printf("  --section=name\tOnly run specified section in job file,"
2218                 " multiple sections can be specified\n");
2219         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2220                 " (def 16384)\n");
2221         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2222         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2223         printf("  --server=args\t\tStart a backend fio server\n");
2224         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2225         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2226         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2227         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2228                 "\t\t\t(option=system,percpu) or run unit work\n"
2229                 "\t\t\tcalibration only (option=calibrate)\n");
2230 #ifdef CONFIG_ZLIB
2231         printf("  --inflate-log=log\tInflate and output compressed log\n");
2232 #endif
2233         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2234         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2235         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2236         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2237         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2238         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2239 }
2240
2241 #ifdef FIO_INC_DEBUG
2242 const struct debug_level debug_levels[] = {
2243         { .name = "process",
2244           .help = "Process creation/exit logging",
2245           .shift = FD_PROCESS,
2246         },
2247         { .name = "file",
2248           .help = "File related action logging",
2249           .shift = FD_FILE,
2250         },
2251         { .name = "io",
2252           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2253           .shift = FD_IO,
2254         },
2255         { .name = "mem",
2256           .help = "Memory allocation/freeing logging",
2257           .shift = FD_MEM,
2258         },
2259         { .name = "blktrace",
2260           .help = "blktrace action logging",
2261           .shift = FD_BLKTRACE,
2262         },
2263         { .name = "verify",
2264           .help = "IO verification action logging",
2265           .shift = FD_VERIFY,
2266         },
2267         { .name = "random",
2268           .help = "Random generation logging",
2269           .shift = FD_RANDOM,
2270         },
2271         { .name = "parse",
2272           .help = "Parser logging",
2273           .shift = FD_PARSE,
2274         },
2275         { .name = "diskutil",
2276           .help = "Disk utility logging actions",
2277           .shift = FD_DISKUTIL,
2278         },
2279         { .name = "job",
2280           .help = "Logging related to creating/destroying jobs",
2281           .shift = FD_JOB,
2282         },
2283         { .name = "mutex",
2284           .help = "Mutex logging",
2285           .shift = FD_MUTEX
2286         },
2287         { .name = "profile",
2288           .help = "Logging related to profiles",
2289           .shift = FD_PROFILE,
2290         },
2291         { .name = "time",
2292           .help = "Logging related to time keeping functions",
2293           .shift = FD_TIME,
2294         },
2295         { .name = "net",
2296           .help = "Network logging",
2297           .shift = FD_NET,
2298         },
2299         { .name = "rate",
2300           .help = "Rate logging",
2301           .shift = FD_RATE,
2302         },
2303         { .name = "compress",
2304           .help = "Log compression logging",
2305           .shift = FD_COMPRESS,
2306         },
2307         { .name = "steadystate",
2308           .help = "Steady state detection logging",
2309           .shift = FD_STEADYSTATE,
2310         },
2311         { .name = "helperthread",
2312           .help = "Helper thread logging",
2313           .shift = FD_HELPERTHREAD,
2314         },
2315         { .name = "zbd",
2316           .help = "Zoned Block Device logging",
2317           .shift = FD_ZBD,
2318         },
2319         { .name = NULL, },
2320 };
2321
2322 static int set_debug(const char *string)
2323 {
2324         const struct debug_level *dl;
2325         char *p = (char *) string;
2326         char *opt;
2327         int i;
2328
2329         if (!string)
2330                 return 0;
2331
2332         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2333                 log_info("fio: dumping debug options:");
2334                 for (i = 0; debug_levels[i].name; i++) {
2335                         dl = &debug_levels[i];
2336                         log_info("%s,", dl->name);
2337                 }
2338                 log_info("all\n");
2339                 return 1;
2340         }
2341
2342         while ((opt = strsep(&p, ",")) != NULL) {
2343                 int found = 0;
2344
2345                 if (!strncmp(opt, "all", 3)) {
2346                         log_info("fio: set all debug options\n");
2347                         fio_debug = ~0UL;
2348                         continue;
2349                 }
2350
2351                 for (i = 0; debug_levels[i].name; i++) {
2352                         dl = &debug_levels[i];
2353                         found = !strncmp(opt, dl->name, strlen(dl->name));
2354                         if (!found)
2355                                 continue;
2356
2357                         if (dl->shift == FD_JOB) {
2358                                 opt = strchr(opt, ':');
2359                                 if (!opt) {
2360                                         log_err("fio: missing job number\n");
2361                                         break;
2362                                 }
2363                                 opt++;
2364                                 fio_debug_jobno = atoi(opt);
2365                                 log_info("fio: set debug jobno %d\n",
2366                                                         fio_debug_jobno);
2367                         } else {
2368                                 log_info("fio: set debug option %s\n", opt);
2369                                 fio_debug |= (1UL << dl->shift);
2370                         }
2371                         break;
2372                 }
2373
2374                 if (!found)
2375                         log_err("fio: debug mask %s not found\n", opt);
2376         }
2377         return 0;
2378 }
2379 #else
2380 static int set_debug(const char *string)
2381 {
2382         log_err("fio: debug tracing not included in build\n");
2383         return 1;
2384 }
2385 #endif
2386
2387 static void fio_options_fill_optstring(void)
2388 {
2389         char *ostr = cmd_optstr;
2390         int i, c;
2391
2392         c = i = 0;
2393         while (l_opts[i].name) {
2394                 ostr[c++] = l_opts[i].val;
2395                 if (l_opts[i].has_arg == required_argument)
2396                         ostr[c++] = ':';
2397                 else if (l_opts[i].has_arg == optional_argument) {
2398                         ostr[c++] = ':';
2399                         ostr[c++] = ':';
2400                 }
2401                 i++;
2402         }
2403         ostr[c] = '\0';
2404 }
2405
2406 static int client_flag_set(char c)
2407 {
2408         int i;
2409
2410         i = 0;
2411         while (l_opts[i].name) {
2412                 int val = l_opts[i].val;
2413
2414                 if (c == (val & 0xff))
2415                         return (val & FIO_CLIENT_FLAG);
2416
2417                 i++;
2418         }
2419
2420         return 0;
2421 }
2422
2423 static void parse_cmd_client(void *client, char *opt)
2424 {
2425         fio_client_add_cmd_option(client, opt);
2426 }
2427
2428 static void show_closest_option(const char *name)
2429 {
2430         int best_option, best_distance;
2431         int i, distance;
2432
2433         while (*name == '-')
2434                 name++;
2435
2436         best_option = -1;
2437         best_distance = INT_MAX;
2438         i = 0;
2439         while (l_opts[i].name) {
2440                 distance = string_distance(name, l_opts[i].name);
2441                 if (distance < best_distance) {
2442                         best_distance = distance;
2443                         best_option = i;
2444                 }
2445                 i++;
2446         }
2447
2448         if (best_option != -1 && string_distance_ok(name, best_distance))
2449                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2450 }
2451
2452 static int parse_output_format(const char *optarg)
2453 {
2454         char *p, *orig, *opt;
2455         int ret = 0;
2456
2457         p = orig = strdup(optarg);
2458
2459         output_format = 0;
2460
2461         while ((opt = strsep(&p, ",")) != NULL) {
2462                 if (!strcmp(opt, "minimal") ||
2463                     !strcmp(opt, "terse") ||
2464                     !strcmp(opt, "csv"))
2465                         output_format |= FIO_OUTPUT_TERSE;
2466                 else if (!strcmp(opt, "json"))
2467                         output_format |= FIO_OUTPUT_JSON;
2468                 else if (!strcmp(opt, "json+"))
2469                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2470                 else if (!strcmp(opt, "normal"))
2471                         output_format |= FIO_OUTPUT_NORMAL;
2472                 else {
2473                         log_err("fio: invalid output format %s\n", opt);
2474                         ret = 1;
2475                         break;
2476                 }
2477         }
2478
2479         free(orig);
2480         return ret;
2481 }
2482
2483 int parse_cmd_line(int argc, char *argv[], int client_type)
2484 {
2485         struct thread_data *td = NULL;
2486         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2487         char *ostr = cmd_optstr;
2488         char *pid_file = NULL;
2489         void *cur_client = NULL;
2490         int backend = 0;
2491
2492         /*
2493          * Reset optind handling, since we may call this multiple times
2494          * for the backend.
2495          */
2496         optind = 1;
2497
2498         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2499                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2500                         parse_cmd_client(cur_client, argv[optind - 1]);
2501                         c &= ~FIO_CLIENT_FLAG;
2502                 }
2503
2504                 switch (c) {
2505                 case 'a':
2506                         smalloc_pool_size = atoi(optarg);
2507                         smalloc_pool_size <<= 10;
2508                         sinit();
2509                         break;
2510                 case 'l':
2511                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2512                         do_exit++;
2513                         exit_val = 1;
2514                         break;
2515                 case 'b':
2516                         write_bw_log = 1;
2517                         break;
2518                 case 'o': {
2519                         FILE *tmp;
2520
2521                         if (f_out && f_out != stdout)
2522                                 fclose(f_out);
2523
2524                         tmp = fopen(optarg, "w+");
2525                         if (!tmp) {
2526                                 log_err("fio: output file open error: %s\n", strerror(errno));
2527                                 exit_val = 1;
2528                                 do_exit++;
2529                                 break;
2530                         }
2531                         f_err = f_out = tmp;
2532                         break;
2533                         }
2534                 case 'm':
2535                         output_format = FIO_OUTPUT_TERSE;
2536                         break;
2537                 case 'F':
2538                         if (parse_output_format(optarg)) {
2539                                 log_err("fio: failed parsing output-format\n");
2540                                 exit_val = 1;
2541                                 do_exit++;
2542                                 break;
2543                         }
2544                         break;
2545                 case 'f':
2546                         output_format |= FIO_OUTPUT_TERSE;
2547                         break;
2548                 case 'h':
2549                         did_arg = true;
2550                         if (!cur_client) {
2551                                 usage(argv[0]);
2552                                 do_exit++;
2553                         }
2554                         break;
2555                 case 'c':
2556                         did_arg = true;
2557                         if (!cur_client) {
2558                                 fio_show_option_help(optarg);
2559                                 do_exit++;
2560                         }
2561                         break;
2562                 case 'i':
2563                         did_arg = true;
2564                         if (!cur_client) {
2565                                 fio_show_ioengine_help(optarg);
2566                                 do_exit++;
2567                         }
2568                         break;
2569                 case 's':
2570                         did_arg = true;
2571                         dump_cmdline = 1;
2572                         break;
2573                 case 'r':
2574                         read_only = 1;
2575                         break;
2576                 case 'v':
2577                         did_arg = true;
2578                         if (!cur_client) {
2579                                 log_info("%s\n", fio_version_string);
2580                                 do_exit++;
2581                         }
2582                         break;
2583                 case 'V':
2584                         terse_version = atoi(optarg);
2585                         if (!(terse_version >= 2 && terse_version <= 5)) {
2586                                 log_err("fio: bad terse version format\n");
2587                                 exit_val = 1;
2588                                 do_exit++;
2589                         }
2590                         break;
2591                 case 'e':
2592                         if (!strcmp("always", optarg))
2593                                 eta_print = FIO_ETA_ALWAYS;
2594                         else if (!strcmp("never", optarg))
2595                                 eta_print = FIO_ETA_NEVER;
2596                         break;
2597                 case 'E': {
2598                         long long t = 0;
2599
2600                         if (check_str_time(optarg, &t, 1)) {
2601                                 log_err("fio: failed parsing eta time %s\n", optarg);
2602                                 exit_val = 1;
2603                                 do_exit++;
2604                                 break;
2605                         }
2606                         eta_new_line = t / 1000;
2607                         if (!eta_new_line) {
2608                                 log_err("fio: eta new line time too short\n");
2609                                 exit_val = 1;
2610                                 do_exit++;
2611                         }
2612                         break;
2613                         }
2614                 case 'O': {
2615                         long long t = 0;
2616
2617                         if (check_str_time(optarg, &t, 1)) {
2618                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2619                                 exit_val = 1;
2620                                 do_exit++;
2621                                 break;
2622                         }
2623                         eta_interval_msec = t / 1000;
2624                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2625                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2626                                 exit_val = 1;
2627                                 do_exit++;
2628                         }
2629                         break;
2630                         }
2631                 case 'd':
2632                         if (set_debug(optarg))
2633                                 do_exit++;
2634                         break;
2635                 case 'P':
2636                         did_arg = true;
2637                         parse_only = 1;
2638                         break;
2639                 case 'x': {
2640                         size_t new_size;
2641
2642                         if (!strcmp(optarg, "global")) {
2643                                 log_err("fio: can't use global as only "
2644                                         "section\n");
2645                                 do_exit++;
2646                                 exit_val = 1;
2647                                 break;
2648                         }
2649                         new_size = (nr_job_sections + 1) * sizeof(char *);
2650                         job_sections = realloc(job_sections, new_size);
2651                         job_sections[nr_job_sections] = strdup(optarg);
2652                         nr_job_sections++;
2653                         break;
2654                         }
2655 #ifdef CONFIG_ZLIB
2656                 case 'X':
2657                         exit_val = iolog_file_inflate(optarg);
2658                         did_arg = true;
2659                         do_exit++;
2660                         break;
2661 #endif
2662                 case 'p':
2663                         did_arg = true;
2664                         if (exec_profile)
2665                                 free(exec_profile);
2666                         exec_profile = strdup(optarg);
2667                         break;
2668                 case FIO_GETOPT_JOB: {
2669                         const char *opt = l_opts[lidx].name;
2670                         char *val = optarg;
2671
2672                         if (!strncmp(opt, "name", 4) && td) {
2673                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2674                                 if (ret)
2675                                         goto out_free;
2676                                 td = NULL;
2677                                 did_arg = true;
2678                         }
2679                         if (!td) {
2680                                 int is_section = !strncmp(opt, "name", 4);
2681                                 int global = 0;
2682
2683                                 if (!is_section || !strncmp(val, "global", 6))
2684                                         global = 1;
2685
2686                                 if (is_section && skip_this_section(val))
2687                                         continue;
2688
2689                                 td = get_new_job(global, &def_thread, true, NULL);
2690                                 if (!td || ioengine_load(td)) {
2691                                         if (td) {
2692                                                 put_job(td);
2693                                                 td = NULL;
2694                                         }
2695                                         do_exit++;
2696                                         exit_val = 1;
2697                                         break;
2698                                 }
2699                                 fio_options_set_ioengine_opts(l_opts, td);
2700                         }
2701
2702                         if ((!val || !strlen(val)) &&
2703                             l_opts[lidx].has_arg == required_argument) {
2704                                 log_err("fio: option %s requires an argument\n", opt);
2705                                 ret = 1;
2706                         } else
2707                                 ret = fio_cmd_option_parse(td, opt, val);
2708
2709                         if (ret) {
2710                                 if (td) {
2711                                         put_job(td);
2712                                         td = NULL;
2713                                 }
2714                                 do_exit++;
2715                                 exit_val = 1;
2716                         }
2717
2718                         if (!ret && !strcmp(opt, "ioengine")) {
2719                                 if (ioengine_load(td)) {
2720                                         put_job(td);
2721                                         td = NULL;
2722                                         do_exit++;
2723                                         exit_val = 1;
2724                                         break;
2725                                 }
2726                                 fio_options_set_ioengine_opts(l_opts, td);
2727                         }
2728                         break;
2729                 }
2730                 case FIO_GETOPT_IOENGINE: {
2731                         const char *opt = l_opts[lidx].name;
2732                         char *val = optarg;
2733
2734                         if (!td)
2735                                 break;
2736
2737                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2738                         break;
2739                 }
2740                 case 'w':
2741                         warnings_fatal = 1;
2742                         break;
2743                 case 'j':
2744                         max_jobs = atoi(optarg);
2745                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2746                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2747                                 do_exit++;
2748                                 exit_val = 1;
2749                         }
2750                         break;
2751                 case 'S':
2752                         did_arg = true;
2753 #ifndef CONFIG_NO_SHM
2754                         if (nr_clients) {
2755                                 log_err("fio: can't be both client and server\n");
2756                                 do_exit++;
2757                                 exit_val = 1;
2758                                 break;
2759                         }
2760                         if (optarg)
2761                                 fio_server_set_arg(optarg);
2762                         is_backend = 1;
2763                         backend = 1;
2764 #else
2765                         log_err("fio: client/server requires SHM support\n");
2766                         do_exit++;
2767                         exit_val = 1;
2768 #endif
2769                         break;
2770                 case 'D':
2771                         if (pid_file)
2772                                 free(pid_file);
2773                         pid_file = strdup(optarg);
2774                         break;
2775                 case 'I':
2776                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2777                                 /* exit on error and calibration only */
2778                                 did_arg = true;
2779                                 do_exit++;
2780                                 if (ret == -1)
2781                                         exit_val = 1;
2782                         }
2783                         break;
2784                 case 'C':
2785                         did_arg = true;
2786                         if (is_backend) {
2787                                 log_err("fio: can't be both client and server\n");
2788                                 do_exit++;
2789                                 exit_val = 1;
2790                                 break;
2791                         }
2792                         /* if --client parameter contains a pathname */
2793                         if (0 == access(optarg, R_OK)) {
2794                                 /* file contains a list of host addrs or names */
2795                                 char hostaddr[PATH_MAX] = {0};
2796                                 char formatstr[8];
2797                                 FILE * hostf = fopen(optarg, "r");
2798                                 if (!hostf) {
2799                                         log_err("fio: could not open client list file %s for read\n", optarg);
2800                                         do_exit++;
2801                                         exit_val = 1;
2802                                         break;
2803                                 }
2804                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2805                                 /*
2806                                  * read at most PATH_MAX-1 chars from each
2807                                  * record in this file
2808                                  */
2809                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2810                                         /* expect EVERY host in file to be valid */
2811                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2812                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2813                                                 do_exit++;
2814                                                 exit_val = 1;
2815                                                 break;
2816                                         }
2817                                 }
2818                                 fclose(hostf);
2819                                 break; /* no possibility of job file for "this client only" */
2820                         }
2821                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2822                                 log_err("fio: failed adding client %s\n", optarg);
2823                                 do_exit++;
2824                                 exit_val = 1;
2825                                 break;
2826                         }
2827                         /*
2828                          * If the next argument exists and isn't an option,
2829                          * assume it's a job file for this client only.
2830                          */
2831                         while (optind < argc) {
2832                                 if (!strncmp(argv[optind], "--", 2) ||
2833                                     !strncmp(argv[optind], "-", 1))
2834                                         break;
2835
2836                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2837                                         break;
2838                                 optind++;
2839                         }
2840                         break;
2841                 case 'R':
2842                         did_arg = true;
2843                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2844                                 do_exit++;
2845                                 exit_val = 1;
2846                         }
2847                         break;
2848                 case 'T':
2849                         did_arg = true;
2850                         do_exit++;
2851                         exit_val = fio_monotonic_clocktest(1);
2852                         break;
2853                 case 'G':
2854                         did_arg = true;
2855                         do_exit++;
2856                         exit_val = fio_crctest(optarg);
2857                         break;
2858                 case 'M':
2859                         did_arg = true;
2860                         do_exit++;
2861                         exit_val = fio_memcpy_test(optarg);
2862                         break;
2863                 case 'L': {
2864                         long long val;
2865
2866                         if (check_str_time(optarg, &val, 1)) {
2867                                 log_err("fio: failed parsing time %s\n", optarg);
2868                                 do_exit++;
2869                                 exit_val = 1;
2870                                 break;
2871                         }
2872                         if (val < 1000) {
2873                                 log_err("fio: status interval too small\n");
2874                                 do_exit++;
2875                                 exit_val = 1;
2876                         }
2877                         status_interval = val / 1000;
2878                         break;
2879                         }
2880                 case 'W':
2881                         if (trigger_file)
2882                                 free(trigger_file);
2883                         trigger_file = strdup(optarg);
2884                         break;
2885                 case 'H':
2886                         if (trigger_cmd)
2887                                 free(trigger_cmd);
2888                         trigger_cmd = strdup(optarg);
2889                         break;
2890                 case 'J':
2891                         if (trigger_remote_cmd)
2892                                 free(trigger_remote_cmd);
2893                         trigger_remote_cmd = strdup(optarg);
2894                         break;
2895                 case 'K':
2896                         if (aux_path)
2897                                 free(aux_path);
2898                         aux_path = strdup(optarg);
2899                         break;
2900                 case 'B':
2901                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2902                                 log_err("fio: failed parsing time %s\n", optarg);
2903                                 do_exit++;
2904                                 exit_val = 1;
2905                         }
2906                         trigger_timeout /= 1000000;
2907                         break;
2908
2909                 case 'A':
2910                         did_arg = true;
2911                         merge_blktrace_only = 1;
2912                         break;
2913                 case '?':
2914                         log_err("%s: unrecognized option '%s'\n", argv[0],
2915                                                         argv[optind - 1]);
2916                         show_closest_option(argv[optind - 1]);
2917                 default:
2918                         do_exit++;
2919                         exit_val = 1;
2920                         break;
2921                 }
2922                 if (do_exit)
2923                         break;
2924         }
2925
2926         if (do_exit && !(is_backend || nr_clients))
2927                 exit(exit_val);
2928
2929         if (nr_clients && fio_clients_connect())
2930                 exit(1);
2931
2932         if (is_backend && backend)
2933                 return fio_start_server(pid_file);
2934         else if (pid_file)
2935                 free(pid_file);
2936
2937         if (td) {
2938                 if (!ret) {
2939                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2940                         if (ret)
2941                                 exit(1);
2942                 }
2943         }
2944
2945         while (!ret && optind < argc) {
2946                 ini_idx++;
2947                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2948                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2949                 optind++;
2950         }
2951
2952 out_free:
2953         return ini_idx;
2954 }
2955
2956 int fio_init_options(void)
2957 {
2958         f_out = stdout;
2959         f_err = stderr;
2960
2961         fio_options_fill_optstring();
2962         fio_options_dup_and_init(l_opts);
2963
2964         atexit(free_shm);
2965
2966         if (fill_def_thread())
2967                 return 1;
2968
2969         return 0;
2970 }
2971
2972 extern int fio_check_options(struct thread_options *);
2973
2974 int parse_options(int argc, char *argv[])
2975 {
2976         const int type = FIO_CLIENT_TYPE_CLI;
2977         int job_files, i;
2978
2979         if (fio_init_options())
2980                 return 1;
2981         if (fio_test_cconv(&def_thread.o))
2982                 log_err("fio: failed internal cconv test\n");
2983
2984         job_files = parse_cmd_line(argc, argv, type);
2985
2986         if (job_files > 0) {
2987                 for (i = 0; i < job_files; i++) {
2988                         if (i && fill_def_thread())
2989                                 return 1;
2990                         if (nr_clients) {
2991                                 if (fio_clients_send_ini(ini_file[i]))
2992                                         return 1;
2993                                 free(ini_file[i]);
2994                         } else if (!is_backend) {
2995                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2996                                         return 1;
2997                                 free(ini_file[i]);
2998                         }
2999                 }
3000         } else if (nr_clients) {
3001                 if (fill_def_thread())
3002                         return 1;
3003                 if (fio_clients_send_ini(NULL))
3004                         return 1;
3005         }
3006
3007         free(ini_file);
3008         fio_options_free(&def_thread);
3009         filesetup_mem_free();
3010
3011         if (!thread_number) {
3012                 if (parse_dryrun())
3013                         return 0;
3014                 if (exec_profile)
3015                         return 0;
3016                 if (is_backend || nr_clients)
3017                         return 0;
3018                 if (did_arg)
3019                         return 0;
3020
3021                 log_err("No job(s) defined\n\n");
3022                 usage(argv[0]);
3023                 return 1;
3024         }
3025
3026         if (output_format & FIO_OUTPUT_NORMAL)
3027                 log_info("%s\n", fio_version_string);
3028
3029         return 0;
3030 }
3031
3032 void options_default_fill(struct thread_options *o)
3033 {
3034         memcpy(o, &def_thread.o, sizeof(*o));
3035 }
3036
3037 struct thread_data *get_global_options(void)
3038 {
3039         return &def_thread;
3040 }