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/asprintf.h"
  36 #include "oslib/getopt.h"
  37 #include "oslib/strcasestr.h"
  38
  39 #include "crc/test.h"
  40 #include "lib/pow2.h"
  41 #include "lib/memcpy.h"
  42
  43 const char fio_version_string[] = FIO_VERSION;
  44
  45 #define FIO_RANDSEED            (0xb1899bedUL)
  46
  47 static char **ini_file;
  48 static bool dump_cmdline;
  49 static bool parse_only;
  50 static bool merge_blktrace_only;
  51
  52 static struct thread_data def_thread;
  53 struct thread_segment segments[REAL_MAX_SEG];
  54 static char **job_sections;
  55 static int nr_job_sections;
  56
  57 bool exitall_on_terminate = false;
  58 int output_format = FIO_OUTPUT_NORMAL;
  59 int eta_print = FIO_ETA_AUTO;
  60 unsigned int eta_interval_msec = 1000;
  61 int eta_new_line = 0;
  62 FILE *f_out = NULL;
  63 FILE *f_err = NULL;
  64 char *exec_profile = NULL;
  65 int warnings_fatal = 0;
  66 int terse_version = 3;
  67 bool is_backend = false;
  68 bool is_local_backend = false;
  69 int nr_clients = 0;
  70 bool log_syslog = false;
  71
  72 bool write_bw_log = false;
  73 bool read_only = false;
  74 int status_interval = 0;
  75
  76 char *trigger_file = NULL;
  77 long long trigger_timeout = 0;
  78 char *trigger_cmd = NULL;
  79 char *trigger_remote_cmd = NULL;
  80
  81 char *aux_path = NULL;
  82
  83 static int prev_group_jobs;
  84
  85 unsigned long fio_debug = 0;
  86 unsigned int fio_debug_jobno = -1;
  87 unsigned int *fio_debug_jobp = NULL;
  88 unsigned int *fio_warned = NULL;
  89
  90 static char cmd_optstr[256];
  91 static bool did_arg;
  92
  93 #define FIO_CLIENT_FLAG         (1 << 16)
  94
  95 /*
  96  * Command line options. These will contain the above, plus a few
  97  * extra that only pertain to fio itself and not jobs.
  98  */
  99 static struct option l_opts[FIO_NR_OPTIONS] = {
 100         {
 101                 .name           = (char *) "output",
 102                 .has_arg        = required_argument,
 103                 .val            = 'o' | FIO_CLIENT_FLAG,
 104         },
 105         {
 106                 .name           = (char *) "latency-log",
 107                 .has_arg        = required_argument,
 108                 .val            = 'l' | FIO_CLIENT_FLAG,
 109         },
 110         {
 111                 .name           = (char *) "bandwidth-log",
 112                 .has_arg        = no_argument,
 113                 .val            = 'b' | FIO_CLIENT_FLAG,
 114         },
 115         {
 116                 .name           = (char *) "minimal",
 117                 .has_arg        = no_argument,
 118                 .val            = 'm' | FIO_CLIENT_FLAG,
 119         },
 120         {
 121                 .name           = (char *) "output-format",
 122                 .has_arg        = required_argument,
 123                 .val            = 'F' | FIO_CLIENT_FLAG,
 124         },
 125         {
 126                 .name           = (char *) "append-terse",
 127                 .has_arg        = optional_argument,
 128                 .val            = 'f',
 129         },
 130         {
 131                 .name           = (char *) "version",
 132                 .has_arg        = no_argument,
 133                 .val            = 'v' | FIO_CLIENT_FLAG,
 134         },
 135         {
 136                 .name           = (char *) "help",
 137                 .has_arg        = no_argument,
 138                 .val            = 'h' | FIO_CLIENT_FLAG,
 139         },
 140         {
 141                 .name           = (char *) "cmdhelp",
 142                 .has_arg        = optional_argument,
 143                 .val            = 'c' | FIO_CLIENT_FLAG,
 144         },
 145         {
 146                 .name           = (char *) "enghelp",
 147                 .has_arg        = optional_argument,
 148                 .val            = 'i' | FIO_CLIENT_FLAG,
 149         },
 150         {
 151                 .name           = (char *) "showcmd",
 152                 .has_arg        = no_argument,
 153                 .val            = 's' | FIO_CLIENT_FLAG,
 154         },
 155         {
 156                 .name           = (char *) "readonly",
 157                 .has_arg        = no_argument,
 158                 .val            = 'r' | FIO_CLIENT_FLAG,
 159         },
 160         {
 161                 .name           = (char *) "eta",
 162                 .has_arg        = required_argument,
 163                 .val            = 'e' | FIO_CLIENT_FLAG,
 164         },
 165         {
 166                 .name           = (char *) "eta-interval",
 167                 .has_arg        = required_argument,
 168                 .val            = 'O' | FIO_CLIENT_FLAG,
 169         },
 170         {
 171                 .name           = (char *) "eta-newline",
 172                 .has_arg        = required_argument,
 173                 .val            = 'E' | FIO_CLIENT_FLAG,
 174         },
 175         {
 176                 .name           = (char *) "debug",
 177                 .has_arg        = required_argument,
 178                 .val            = 'd' | FIO_CLIENT_FLAG,
 179         },
 180         {
 181                 .name           = (char *) "parse-only",
 182                 .has_arg        = no_argument,
 183                 .val            = 'P' | FIO_CLIENT_FLAG,
 184         },
 185         {
 186                 .name           = (char *) "section",
 187                 .has_arg        = required_argument,
 188                 .val            = 'x' | FIO_CLIENT_FLAG,
 189         },
 190 #ifdef CONFIG_ZLIB
 191         {
 192                 .name           = (char *) "inflate-log",
 193                 .has_arg        = required_argument,
 194                 .val            = 'X' | FIO_CLIENT_FLAG,
 195         },
 196 #endif
 197         {
 198                 .name           = (char *) "alloc-size",
 199                 .has_arg        = required_argument,
 200                 .val            = 'a' | FIO_CLIENT_FLAG,
 201         },
 202         {
 203                 .name           = (char *) "profile",
 204                 .has_arg        = required_argument,
 205                 .val            = 'p' | FIO_CLIENT_FLAG,
 206         },
 207         {
 208                 .name           = (char *) "warnings-fatal",
 209                 .has_arg        = no_argument,
 210                 .val            = 'w' | FIO_CLIENT_FLAG,
 211         },
 212         {
 213                 .name           = (char *) "max-jobs",
 214                 .has_arg        = required_argument,
 215                 .val            = 'j' | FIO_CLIENT_FLAG,
 216         },
 217         {
 218                 .name           = (char *) "terse-version",
 219                 .has_arg        = required_argument,
 220                 .val            = 'V' | FIO_CLIENT_FLAG,
 221         },
 222         {
 223                 .name           = (char *) "server",
 224                 .has_arg        = optional_argument,
 225                 .val            = 'S',
 226         },
 227 #ifdef WIN32
 228         {
 229                 .name           = (char *) "server-internal",
 230                 .has_arg        = required_argument,
 231                 .val            = 'N',
 232         },
 233 #endif
 234         {       .name           = (char *) "daemonize",
 235                 .has_arg        = required_argument,
 236                 .val            = 'D',
 237         },
 238         {
 239                 .name           = (char *) "client",
 240                 .has_arg        = required_argument,
 241                 .val            = 'C',
 242         },
 243         {
 244                 .name           = (char *) "remote-config",
 245                 .has_arg        = required_argument,
 246                 .val            = 'R',
 247         },
 248         {
 249                 .name           = (char *) "cpuclock-test",
 250                 .has_arg        = no_argument,
 251                 .val            = 'T',
 252         },
 253         {
 254                 .name           = (char *) "crctest",
 255                 .has_arg        = optional_argument,
 256                 .val            = 'G',
 257         },
 258         {
 259                 .name           = (char *) "memcpytest",
 260                 .has_arg        = optional_argument,
 261                 .val            = 'M',
 262         },
 263         {
 264                 .name           = (char *) "idle-prof",
 265                 .has_arg        = required_argument,
 266                 .val            = 'I',
 267         },
 268         {
 269                 .name           = (char *) "status-interval",
 270                 .has_arg        = required_argument,
 271                 .val            = 'L' | FIO_CLIENT_FLAG,
 272         },
 273         {
 274                 .name           = (char *) "trigger-file",
 275                 .has_arg        = required_argument,
 276                 .val            = 'W',
 277         },
 278         {
 279                 .name           = (char *) "trigger-timeout",
 280                 .has_arg        = required_argument,
 281                 .val            = 'B',
 282         },
 283         {
 284                 .name           = (char *) "trigger",
 285                 .has_arg        = required_argument,
 286                 .val            = 'H',
 287         },
 288         {
 289                 .name           = (char *) "trigger-remote",
 290                 .has_arg        = required_argument,
 291                 .val            = 'J',
 292         },
 293         {
 294                 .name           = (char *) "aux-path",
 295                 .has_arg        = required_argument,
 296                 .val            = 'K',
 297         },
 298         {
 299                 .name           = (char *) "merge-blktrace-only",
 300                 .has_arg        = no_argument,
 301                 .val            = 'A' | FIO_CLIENT_FLAG,
 302         },
 303         {
 304                 .name           = NULL,
 305         },
 306 };
 307
 308 void free_threads_shm(void)
 309 {
 310         int i;
 311
 312         for (i = 0; i < nr_segments; i++) {
 313                 struct thread_segment *seg = &segments[i];
 314
 315                 if (seg->threads) {
 316                         void *tp = seg->threads;
 317 #ifndef CONFIG_NO_SHM
 318                         struct shmid_ds sbuf;
 319
 320                         seg->threads = NULL;
 321                         shmdt(tp);
 322                         shmctl(seg->shm_id, IPC_RMID, &sbuf);
 323                         seg->shm_id = -1;
 324 #else
 325                         seg->threads = NULL;
 326                         free(tp);
 327 #endif
 328                 }
 329         }
 330
 331         nr_segments = 0;
 332         cur_segment = 0;
 333 }
 334
 335 static void free_shm(void)
 336 {
 337 #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
 338         if (nr_segments) {
 339                 flow_exit();
 340                 fio_debug_jobp = NULL;
 341                 fio_warned = NULL;
 342                 free_threads_shm();
 343         }
 344
 345         free(trigger_file);
 346         free(trigger_cmd);
 347         free(trigger_remote_cmd);
 348         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 349
 350         options_free(fio_options, &def_thread.o);
 351         fio_filelock_exit();
 352         file_hash_exit();
 353         scleanup();
 354 #endif
 355 }
 356
 357 static int add_thread_segment(void)
 358 {
 359         struct thread_segment *seg = &segments[nr_segments];
 360         size_t size = JOBS_PER_SEG * sizeof(struct thread_data);
 361         int i;
 362
 363         if (nr_segments + 1 >= REAL_MAX_SEG) {
 364                 log_err("error: maximum number of jobs reached.\n");
 365                 return -1;
 366         }
 367
 368         size += 2 * sizeof(unsigned int);
 369
 370 #ifndef CONFIG_NO_SHM
 371         seg->shm_id = shmget(0, size, IPC_CREAT | 0600);
 372         if (seg->shm_id == -1) {
 373                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC)
 374                         perror("shmget");
 375                 return -1;
 376         }
 377 #else
 378         seg->threads = malloc(size);
 379         if (!seg->threads)
 380                 return -1;
 381 #endif
 382
 383 #ifndef CONFIG_NO_SHM
 384         seg->threads = shmat(seg->shm_id, NULL, 0);
 385         if (seg->threads == (void *) -1) {
 386                 perror("shmat");
 387                 return 1;
 388         }
 389         if (shm_attach_to_open_removed())
 390                 shmctl(seg->shm_id, IPC_RMID, NULL);
 391 #endif
 392
 393         nr_segments++;
 394
 395         memset(seg->threads, 0, JOBS_PER_SEG * sizeof(struct thread_data));
 396         for (i = 0; i < JOBS_PER_SEG; i++)
 397                 DRD_IGNORE_VAR(seg->threads[i]);
 398         seg->nr_threads = 0;
 399
 400         /* Not first segment, we're done */
 401         if (nr_segments != 1) {
 402                 cur_segment++;
 403                 return 0;
 404         }
 405
 406         fio_debug_jobp = (unsigned int *)(seg->threads + JOBS_PER_SEG);
 407         *fio_debug_jobp = -1;
 408         fio_warned = fio_debug_jobp + 1;
 409         *fio_warned = 0;
 410
 411         flow_init();
 412         return 0;
 413 }
 414
 415 /*
 416  * The thread areas are shared between the main process and the job
 417  * threads/processes, and is split into chunks of JOBS_PER_SEG. If the current
 418  * segment has no more room, add a new chunk.
 419  */
 420 static int expand_thread_area(void)
 421 {
 422         struct thread_segment *seg = &segments[cur_segment];
 423
 424         if (nr_segments && seg->nr_threads < JOBS_PER_SEG)
 425                 return 0;
 426
 427         return add_thread_segment();
 428 }
 429
 430 static void dump_print_option(struct print_option *p)
 431 {
 432         const char *delim;
 433
 434         if (!strcmp("description", p->name))
 435                 delim = "\"";
 436         else
 437                 delim = "";
 438
 439         log_info("--%s%s", p->name, p->value ? "" : " ");
 440         if (p->value)
 441                 log_info("=%s%s%s ", delim, p->value, delim);
 442 }
 443
 444 static void dump_opt_list(struct thread_data *td)
 445 {
 446         struct flist_head *entry;
 447         struct print_option *p;
 448
 449         if (flist_empty(&td->opt_list))
 450                 return;
 451
 452         flist_for_each(entry, &td->opt_list) {
 453                 p = flist_entry(entry, struct print_option, list);
 454                 dump_print_option(p);
 455         }
 456 }
 457
 458 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 459 {
 460         struct flist_head *entry;
 461
 462         if (flist_empty(&src->opt_list))
 463                 return;
 464
 465         flist_for_each(entry, &src->opt_list) {
 466                 struct print_option *srcp, *dstp;
 467
 468                 srcp = flist_entry(entry, struct print_option, list);
 469                 dstp = malloc(sizeof(*dstp));
 470                 dstp->name = strdup(srcp->name);
 471                 if (srcp->value)
 472                         dstp->value = strdup(srcp->value);
 473                 else
 474                         dstp->value = NULL;
 475                 flist_add_tail(&dstp->list, &dst->opt_list);
 476         }
 477 }
 478
 479 /*
 480  * Return a free job structure.
 481  */
 482 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 483                                        bool preserve_eo, const char *jobname)
 484 {
 485         struct thread_segment *seg;
 486         struct thread_data *td;
 487
 488         if (global)
 489                 return &def_thread;
 490         if (expand_thread_area()) {
 491                 log_err("error: failed to setup shm segment\n");
 492                 return NULL;
 493         }
 494
 495         seg = &segments[cur_segment];
 496         td = &seg->threads[seg->nr_threads++];
 497         thread_number++;
 498         *td = *parent;
 499
 500         INIT_FLIST_HEAD(&td->opt_list);
 501         if (parent != &def_thread)
 502                 copy_opt_list(td, parent);
 503
 504         td->io_ops = NULL;
 505         td->io_ops_init = 0;
 506         if (!preserve_eo)
 507                 td->eo = NULL;
 508
 509         td->o.uid = td->o.gid = -1U;
 510
 511         dup_files(td, parent);
 512         fio_options_mem_dupe(td);
 513
 514         profile_add_hooks(td);
 515
 516         td->thread_number = thread_number;
 517         td->subjob_number = 0;
 518
 519         if (jobname)
 520                 td->o.name = strdup(jobname);
 521
 522         if (!parent->o.group_reporting || parent == &def_thread)
 523                 stat_number++;
 524
 525         return td;
 526 }
 527
 528 static void put_job(struct thread_data *td)
 529 {
 530         if (td == &def_thread)
 531                 return;
 532
 533         profile_td_exit(td);
 534         flow_exit_job(td);
 535
 536         if (td->error)
 537                 log_info("fio: %s\n", td->verror);
 538
 539         fio_options_free(td);
 540         fio_dump_options_free(td);
 541         if (td->io_ops)
 542                 free_ioengine(td);
 543
 544         if (td->o.name)
 545                 free(td->o.name);
 546
 547         memset(td, 0, sizeof(*td));
 548         segments[cur_segment].nr_threads--;
 549         thread_number--;
 550 }
 551
 552 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 553 {
 554         unsigned long long bs = td->o.min_bs[ddir];
 555
 556         assert(ddir_rw(ddir));
 557
 558         if (td->o.rate[ddir])
 559                 td->rate_bps[ddir] = td->o.rate[ddir];
 560         else
 561                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 562
 563         if (!td->rate_bps[ddir]) {
 564                 log_err("rate lower than supported\n");
 565                 return -1;
 566         }
 567
 568         td->rate_next_io_time[ddir] = 0;
 569         td->rate_io_issue_bytes[ddir] = 0;
 570         td->last_usec[ddir] = 0;
 571         return 0;
 572 }
 573
 574 static int setup_rate(struct thread_data *td)
 575 {
 576         int ret = 0;
 577
 578         for_each_rw_ddir(ddir) {
 579                 if (td->o.rate[ddir] || td->o.rate_iops[ddir]) {
 580                         ret |= __setup_rate(td, ddir);
 581                 }
 582         }
 583         return ret;
 584 }
 585
 586 static int fixed_block_size(struct thread_options *o)
 587 {
 588         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 589                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 590                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 591                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 592                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 593 }
 594
 595 /*
 596  * <3 Johannes
 597  */
 598 static unsigned int gcd(unsigned int m, unsigned int n)
 599 {
 600         if (!n)
 601                 return m;
 602
 603         return gcd(n, m % n);
 604 }
 605
 606 /*
 607  * Lazy way of fixing up options that depend on each other. We could also
 608  * define option callback handlers, but this is easier.
 609  */
 610 static int fixup_options(struct thread_data *td)
 611 {
 612         struct thread_options *o = &td->o;
 613         int ret = 0;
 614
 615         if (read_only && (td_write(td) || td_trim(td))) {
 616                 log_err("fio: trim and write operations are not allowed"
 617                          " with the --readonly parameter.\n");
 618                 ret |= 1;
 619         }
 620
 621 #ifndef CONFIG_PSHARED
 622         if (!o->use_thread) {
 623                 log_info("fio: this platform does not support process shared"
 624                          " mutexes, forcing use of threads. Use the 'thread'"
 625                          " option to get rid of this warning.\n");
 626                 o->use_thread = 1;
 627                 ret |= warnings_fatal;
 628         }
 629 #endif
 630
 631         if (o->write_iolog_file && o->read_iolog_file) {
 632                 log_err("fio: read iolog overrides write_iolog\n");
 633                 free(o->write_iolog_file);
 634                 o->write_iolog_file = NULL;
 635                 ret |= warnings_fatal;
 636         }
 637
 638         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
 639                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
 640                 ret |= 1;
 641         }
 642
 643         if (o->zone_mode == ZONE_MODE_ZBD && !o->create_serialize) {
 644                 log_err("fio: --zonemode=zbd and --create_serialize=0 are not compatible.\n");
 645                 ret |= 1;
 646         }
 647
 648         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
 649                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
 650                 ret |= 1;
 651         }
 652
 653         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
 654                 if (o->zone_size)
 655                         o->zone_mode = ZONE_MODE_STRIDED;
 656                 else
 657                         o->zone_mode = ZONE_MODE_NONE;
 658         }
 659
 660         /*
 661          * Strided zone mode only really works with 1 file.
 662          */
 663         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
 664                 o->zone_mode = ZONE_MODE_NONE;
 665
 666         /*
 667          * If zone_range isn't specified, backward compatibility dictates it
 668          * should be made equal to zone_size.
 669          */
 670         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
 671                 o->zone_range = o->zone_size;
 672
 673         /*
 674          * Reads can do overwrites, we always need to pre-create the file
 675          */
 676         if (td_read(td))
 677                 o->overwrite = 1;
 678
 679         for_each_rw_ddir(ddir) {
 680                 if (!o->min_bs[ddir])
 681                         o->min_bs[ddir] = o->bs[ddir];
 682                 if (!o->max_bs[ddir])
 683                         o->max_bs[ddir] = o->bs[ddir];
 684         }
 685
 686         o->rw_min_bs = -1;
 687         for_each_rw_ddir(ddir) {
 688                 o->rw_min_bs = min(o->rw_min_bs, o->min_bs[ddir]);
 689         }
 690
 691         /*
 692          * For random IO, allow blockalign offset other than min_bs.
 693          */
 694         for_each_rw_ddir(ddir) {
 695                 if (!o->ba[ddir] || !td_random(td))
 696                         o->ba[ddir] = o->min_bs[ddir];
 697         }
 698
 699         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 700             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 701             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 702             !o->norandommap) {
 703                 log_err("fio: Any use of blockalign= turns off randommap\n");
 704                 o->norandommap = 1;
 705                 ret |= warnings_fatal;
 706         }
 707
 708         if (!o->file_size_high)
 709                 o->file_size_high = o->file_size_low;
 710
 711         if (o->start_delay_high) {
 712                 if (!o->start_delay_orig)
 713                         o->start_delay_orig = o->start_delay;
 714                 o->start_delay = rand_between(&td->delay_state,
 715                                                 o->start_delay_orig,
 716                                                 o->start_delay_high);
 717         }
 718
 719         if (o->norandommap && o->verify != VERIFY_NONE
 720             && !fixed_block_size(o))  {
 721                 log_err("fio: norandommap given for variable block sizes, "
 722                         "verify limited\n");
 723                 ret |= warnings_fatal;
 724         }
 725         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 726                 log_err("fio: bs_unaligned may not work with raw io\n");
 727
 728         /*
 729          * thinktime_spin must be less than thinktime
 730          */
 731         if (o->thinktime_spin > o->thinktime)
 732                 o->thinktime_spin = o->thinktime;
 733
 734         /*
 735          * The low water mark cannot be bigger than the iodepth
 736          */
 737         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 738                 o->iodepth_low = o->iodepth;
 739
 740         /*
 741          * If batch number isn't set, default to the same as iodepth
 742          */
 743         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 744                 o->iodepth_batch = o->iodepth;
 745
 746         /*
 747          * If max batch complete number isn't set or set incorrectly,
 748          * default to the same as iodepth_batch_complete_min
 749          */
 750         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 751                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 752
 753         /*
 754          * There's no need to check for in-flight overlapping IOs if the job
 755          * isn't changing data or the maximum iodepth is guaranteed to be 1
 756          * when we are not in offload mode
 757          */
 758         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 759             (!(td_write(td) || td_trim(td)) || o->iodepth == 1) &&
 760             o->io_submit_mode != IO_MODE_OFFLOAD)
 761                 o->serialize_overlap = 0;
 762
 763         if (o->nr_files > td->files_index)
 764                 o->nr_files = td->files_index;
 765
 766         if (o->open_files > o->nr_files || !o->open_files)
 767                 o->open_files = o->nr_files;
 768
 769         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 770             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 771             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 772             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 773                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 774                 ret |= 1;
 775         }
 776         for_each_rw_ddir(ddir) {
 777                 if ((o->rate[ddir] && (o->rate[ddir] < o->ratemin[ddir])) ||
 778                     (o->rate_iops[ddir] && (o->rate_iops[ddir] < o->rate_iops_min[ddir]))) {
 779                         log_err("fio: minimum rate exceeds rate, ddir %d\n", +ddir);
 780                         ret |= 1;
 781                 }
 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 CONFIG_FDATASYNC
 863         if (o->fdatasync_blocks) {
 864                 log_info("fio: this platform does not support fdatasync()"
 865                          " falling back to using fsync().  Use the 'fsync'"
 866                          " option instead of 'fdatasync' to get rid of"
 867                          " this warning\n");
 868                 o->fsync_blocks = o->fdatasync_blocks;
 869                 o->fdatasync_blocks = 0;
 870                 ret |= warnings_fatal;
 871         }
 872 #endif
 873
 874 #ifdef WIN32
 875         /*
 876          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 877          * so fail if we're passed those flags
 878          */
 879         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 880                 log_err("fio: Windows does not support direct or non-buffered io with"
 881                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 882                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 883                 ret |= 1;
 884         }
 885 #endif
 886
 887         /*
 888          * For fully compressible data, just zero them at init time.
 889          * It's faster than repeatedly filling it. For non-zero
 890          * compression, we should have refill_buffers set. Set it, unless
 891          * the job file already changed it.
 892          */
 893         if (o->compress_percentage) {
 894                 if (o->compress_percentage == 100) {
 895                         o->zero_buffers = 1;
 896                         o->compress_percentage = 0;
 897                 } else if (!fio_option_is_set(o, refill_buffers)) {
 898                         o->refill_buffers = 1;
 899                         td->flags |= TD_F_REFILL_BUFFERS;
 900                 }
 901         }
 902
 903         /*
 904          * Using a non-uniform random distribution excludes usage of
 905          * a random map
 906          */
 907         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 908                 o->norandommap = 1;
 909
 910         /*
 911          * If size is set but less than the min block size, complain
 912          */
 913         if (o->size && o->size < td_min_bs(td)) {
 914                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 915                         (unsigned long long) o->size, td_min_bs(td));
 916                 ret |= 1;
 917         }
 918
 919         /*
 920          * If randseed is set, that overrides randrepeat
 921          */
 922         if (fio_option_is_set(o, rand_seed))
 923                 o->rand_repeatable = 0;
 924
 925         if (td_ioengine_flagged(td, FIO_NOEXTEND) && o->file_append) {
 926                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 927                 ret |= 1;
 928         }
 929
 930         if (fio_option_is_set(o, gtod_cpu)) {
 931                 fio_gtod_init();
 932                 fio_gtod_set_cpu(o->gtod_cpu);
 933                 fio_gtod_offload = 1;
 934         }
 935
 936         td->loops = o->loops;
 937         if (!td->loops)
 938                 td->loops = 1;
 939
 940         if (o->block_error_hist && o->nr_files != 1) {
 941                 log_err("fio: block error histogram only available "
 942                         "with a single file per job, but %d files "
 943                         "provided\n", o->nr_files);
 944                 ret |= 1;
 945         }
 946
 947         if (o->disable_lat)
 948                 o->lat_percentiles = 0;
 949         if (o->disable_clat)
 950                 o->clat_percentiles = 0;
 951         if (o->disable_slat)
 952                 o->slat_percentiles = 0;
 953
 954         /*
 955          * Fix these up to be nsec internally
 956          */
 957         for_each_rw_ddir(ddir)
 958                 o->max_latency[ddir] *= 1000ULL;
 959
 960         o->latency_target *= 1000ULL;
 961
 962         /*
 963          * Dedupe working set verifications
 964          */
 965         if (o->dedupe_percentage && o->dedupe_mode == DEDUPE_MODE_WORKING_SET) {
 966                 if (!fio_option_is_set(o, size)) {
 967                         log_err("fio: pregenerated dedupe working set "
 968                                         "requires size to be set\n");
 969                         ret |= 1;
 970                 } else if (o->nr_files != 1) {
 971                         log_err("fio: dedupe working set mode supported with "
 972                                         "single file per job, but %d files "
 973                                         "provided\n", o->nr_files);
 974                         ret |= 1;
 975                 } else if (o->dedupe_working_set_percentage + o->dedupe_percentage > 100) {
 976                         log_err("fio: impossible to reach expected dedupe percentage %u "
 977                                         "since %u percentage of size is reserved to dedupe working set "
 978                                         "(those are unique pages)\n",
 979                                         o->dedupe_percentage, o->dedupe_working_set_percentage);
 980                         ret |= 1;
 981                 }
 982         }
 983
 984         for_each_td(td2) {
 985                 if (td->o.ss_check_interval != td2->o.ss_check_interval) {
 986                         log_err("fio: conflicting ss_check_interval: %llu and %llu, must be globally equal\n",
 987                                         td->o.ss_check_interval, td2->o.ss_check_interval);
 988                         ret |= 1;
 989                 }
 990         } end_for_each();
 991         if (td->o.ss_dur && td->o.ss_check_interval / 1000L < 1000) {
 992                 log_err("fio: ss_check_interval must be at least 1s\n");
 993                 ret |= 1;
 994
 995         }
 996         if (td->o.ss_dur && (td->o.ss_dur % td->o.ss_check_interval != 0 || td->o.ss_dur <= td->o.ss_check_interval)) {
 997                 log_err("fio: ss_duration %lluus must be multiple of ss_check_interval %lluus\n",
 998                                 td->o.ss_dur, td->o.ss_check_interval);
 999                 ret |= 1;
1000         }
1001
1002
1003         return ret;
1004 }
1005
1006 static void init_rand_file_service(struct thread_data *td)
1007 {
1008         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
1009         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
1010
1011         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
1012                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, td->random_center, seed);
1013                 zipf_disable_hash(&td->next_file_zipf);
1014         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
1015                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, td->random_center, seed);
1016                 zipf_disable_hash(&td->next_file_zipf);
1017         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
1018                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, td->random_center, seed);
1019                 gauss_disable_hash(&td->next_file_gauss);
1020         }
1021 }
1022
1023 void td_fill_rand_seeds(struct thread_data *td)
1024 {
1025         uint64_t read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
1026         uint64_t write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
1027         uint64_t trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
1028         int i;
1029         bool use64;
1030
1031         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1032                 use64 = true;
1033         else
1034                 use64 = false;
1035
1036         /*
1037          * trimwrite is special in that we need to generate the same
1038          * offsets to get the "write after trim" effect. If we are
1039          * using bssplit to set buffer length distributions, ensure that
1040          * we seed the trim and write generators identically. Ditto for
1041          * verify, read and writes must have the same seed, if we are doing
1042          * read verify.
1043          */
1044         if (td->o.verify != VERIFY_NONE)
1045                 write_seed = read_seed;
1046         if (td_trimwrite(td))
1047                 trim_seed = write_seed;
1048         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1049         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1050         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1051
1052         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
1053                 use64);
1054         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1055
1056         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1057                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1058         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1059                 init_rand_file_service(td);
1060
1061         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1062         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1063         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1064         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1065         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1066         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1067         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1068         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1069         init_rand_seed(&td->prio_state, td->rand_seeds[FIO_RAND_PRIO_CMDS], false);
1070         init_rand_seed(&td->dedupe_working_set_index_state, td->rand_seeds[FIO_RAND_DEDUPE_WORKING_SET_IX], use64);
1071
1072         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1073
1074         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1075                 struct frand_state *s = &td->seq_rand_state[i];
1076
1077                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1078         }
1079
1080         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
1081         frand_copy(&td->buf_state_prev, &td->buf_state);
1082 }
1083
1084 static int setup_random_seeds(struct thread_data *td)
1085 {
1086         uint64_t seed;
1087         unsigned int i;
1088
1089         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1090                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1091                 dprint(FD_RANDOM, "using system RNG for random seeds\n");
1092                 if (ret)
1093                         return ret;
1094         } else {
1095                 seed = td->o.rand_seed;
1096                 for (i = 0; i < 4; i++)
1097                         seed *= 0x9e370001UL;
1098
1099                 for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1100                         td->rand_seeds[i] = seed * td->thread_number + i;
1101                         seed *= 0x9e370001UL;
1102                 }
1103         }
1104
1105         td_fill_rand_seeds(td);
1106
1107         dprint(FD_RANDOM, "FIO_RAND_NR_OFFS=%d\n", FIO_RAND_NR_OFFS);
1108         for (int i = 0; i < FIO_RAND_NR_OFFS; i++)
1109                 dprint(FD_RANDOM, "rand_seeds[%d]=%" PRIu64 "\n", i, td->rand_seeds[i]);
1110
1111         return 0;
1112 }
1113
1114 /*
1115  * Initializes the ioengine configured for a job, if it has not been done so
1116  * already.
1117  */
1118 int ioengine_load(struct thread_data *td)
1119 {
1120         if (!td->o.ioengine) {
1121                 log_err("fio: internal fault, no IO engine specified\n");
1122                 return 1;
1123         }
1124
1125         if (td->io_ops) {
1126                 struct ioengine_ops *ops;
1127                 void *dlhandle;
1128
1129                 /* An engine is loaded, but the requested ioengine
1130                  * may have changed.
1131                  */
1132                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1133                         /* The right engine is already loaded */
1134                         return 0;
1135                 }
1136
1137                 /*
1138                  * Name of file and engine may be different, load ops
1139                  * for this name and see if they match. If they do, then
1140                  * the engine is unchanged.
1141                  */
1142                 dlhandle = td->io_ops->dlhandle;
1143                 ops = load_ioengine(td);
1144                 if (!ops)
1145                         goto fail;
1146
1147                 if (ops == td->io_ops && dlhandle == td->io_ops->dlhandle)
1148                         return 0;
1149
1150                 if (dlhandle && dlhandle != td->io_ops->dlhandle)
1151                         dlclose(dlhandle);
1152
1153                 /* Unload the old engine. */
1154                 free_ioengine(td);
1155         }
1156
1157         td->io_ops = load_ioengine(td);
1158         if (!td->io_ops)
1159                 goto fail;
1160
1161         if (td->io_ops->option_struct_size && td->io_ops->options) {
1162                 /*
1163                  * In cases where td->eo is set, clone it for a child thread.
1164                  * This requires that the parent thread has the same ioengine,
1165                  * but that requirement must be enforced by the code which
1166                  * cloned the thread.
1167                  */
1168                 void *origeo = td->eo;
1169                 /*
1170                  * Otherwise use the default thread options.
1171                  */
1172                 if (!origeo && td != &def_thread && def_thread.eo &&
1173                     def_thread.io_ops->options == td->io_ops->options)
1174                         origeo = def_thread.eo;
1175
1176                 options_init(td->io_ops->options);
1177                 td->eo = malloc(td->io_ops->option_struct_size);
1178                 /*
1179                  * Use the default thread as an option template if this uses the
1180                  * same options structure and there are non-default options
1181                  * used.
1182                  */
1183                 if (origeo) {
1184                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1185                         options_mem_dupe(td->io_ops->options, td->eo);
1186                 } else {
1187                         memset(td->eo, 0, td->io_ops->option_struct_size);
1188                         fill_default_options(td->eo, td->io_ops->options);
1189                 }
1190                 *(struct thread_data **)td->eo = td;
1191         }
1192
1193         if (td->o.odirect)
1194                 td->io_ops->flags |= FIO_RAWIO;
1195
1196         td_set_ioengine_flags(td);
1197         return 0;
1198
1199 fail:
1200         log_err("fio: failed to load engine\n");
1201         return 1;
1202
1203 }
1204
1205 static void init_flags(struct thread_data *td)
1206 {
1207         struct thread_options *o = &td->o;
1208         int i;
1209
1210         if (o->verify_backlog)
1211                 td->flags |= TD_F_VER_BACKLOG;
1212         if (o->trim_backlog)
1213                 td->flags |= TD_F_TRIM_BACKLOG;
1214         if (o->read_iolog_file)
1215                 td->flags |= TD_F_READ_IOLOG;
1216         if (o->refill_buffers)
1217                 td->flags |= TD_F_REFILL_BUFFERS;
1218         /*
1219          * Always scramble buffers if asked to
1220          */
1221         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1222                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1223         /*
1224          * But also scramble buffers, unless we were explicitly asked
1225          * to zero them.
1226          */
1227         if (o->scramble_buffers && !(o->zero_buffers &&
1228             fio_option_is_set(o, zero_buffers)))
1229                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1230         if (o->verify != VERIFY_NONE)
1231                 td->flags |= TD_F_DO_VERIFY;
1232
1233         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1234                 td->flags |= TD_F_NEED_LOCK;
1235
1236         if (o->mem_type == MEM_CUDA_MALLOC)
1237                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1238
1239         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1240                 if (option_check_rate(td, i)) {
1241                         td->flags |= TD_F_CHECK_RATE;
1242                         break;
1243                 }
1244         }
1245 }
1246
1247 enum {
1248         FPRE_NONE = 0,
1249         FPRE_JOBNAME,
1250         FPRE_JOBNUM,
1251         FPRE_FILENUM,
1252         FPRE_CLIENTUID
1253 };
1254
1255 static struct fpre_keyword {
1256         const char *keyword;
1257         size_t strlen;
1258         int key;
1259 } fpre_keywords[] = {
1260         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1261         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1262         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1263         { .keyword = "$clientuid",      .key = FPRE_CLIENTUID, },
1264         { .keyword = NULL, },
1265         };
1266
1267 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1268                            const char *jobname, int jobnum, int filenum)
1269 {
1270         struct fpre_keyword *f;
1271         char copy[PATH_MAX];
1272         size_t dst_left = PATH_MAX - 1;
1273
1274         if (!o->filename_format || !strlen(o->filename_format)) {
1275                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1276                 return buf;
1277         }
1278
1279         for (f = &fpre_keywords[0]; f->keyword; f++)
1280                 f->strlen = strlen(f->keyword);
1281
1282         snprintf(buf, buf_size, "%s", o->filename_format);
1283
1284         memset(copy, 0, sizeof(copy));
1285         for (f = &fpre_keywords[0]; f->keyword; f++) {
1286                 do {
1287                         size_t pre_len, post_start = 0;
1288                         char *str, *dst = copy;
1289
1290                         str = strcasestr(buf, f->keyword);
1291                         if (!str)
1292                                 break;
1293
1294                         pre_len = str - buf;
1295                         if (strlen(str) != f->strlen)
1296                                 post_start = pre_len + f->strlen;
1297
1298                         if (pre_len) {
1299                                 strncpy(dst, buf, pre_len);
1300                                 dst += pre_len;
1301                                 dst_left -= pre_len;
1302                         }
1303
1304                         switch (f->key) {
1305                         case FPRE_JOBNAME: {
1306                                 int ret;
1307
1308                                 ret = snprintf(dst, dst_left, "%s", jobname);
1309                                 if (ret < 0)
1310                                         break;
1311                                 else if (ret > dst_left) {
1312                                         log_err("fio: truncated filename\n");
1313                                         dst += dst_left;
1314                                         dst_left = 0;
1315                                 } else {
1316                                         dst += ret;
1317                                         dst_left -= ret;
1318                                 }
1319                                 break;
1320                                 }
1321                         case FPRE_JOBNUM: {
1322                                 int ret;
1323
1324                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1325                                 if (ret < 0)
1326                                         break;
1327                                 else if (ret > dst_left) {
1328                                         log_err("fio: truncated filename\n");
1329                                         dst += dst_left;
1330                                         dst_left = 0;
1331                                 } else {
1332                                         dst += ret;
1333                                         dst_left -= ret;
1334                                 }
1335                                 break;
1336                                 }
1337                         case FPRE_FILENUM: {
1338                                 int ret;
1339
1340                                 ret = snprintf(dst, dst_left, "%d", filenum);
1341                                 if (ret < 0)
1342                                         break;
1343                                 else if (ret > dst_left) {
1344                                         log_err("fio: truncated filename\n");
1345                                         dst += dst_left;
1346                                         dst_left = 0;
1347                                 } else {
1348                                         dst += ret;
1349                                         dst_left -= ret;
1350                                 }
1351                                 break;
1352                                 }
1353                         case FPRE_CLIENTUID: {
1354                                 int ret;
1355                                 ret = snprintf(dst, dst_left, "%s", client_sockaddr_str);
1356                                 if (ret < 0)
1357                                         break;
1358                                 else if (ret > dst_left) {
1359                                         log_err("fio: truncated filename\n");
1360                                         dst += dst_left;
1361                                         dst_left = 0;
1362                                 } else {
1363                                         dst += ret;
1364                                         dst_left -= ret;
1365                                 }
1366                                 break;
1367                                 }
1368                         default:
1369                                 assert(0);
1370                                 break;
1371                         }
1372
1373                         if (post_start)
1374                                 strncpy(dst, buf + post_start, dst_left);
1375
1376                         snprintf(buf, buf_size, "%s", copy);
1377                 } while (1);
1378         }
1379
1380         return buf;
1381 }
1382
1383 bool parse_dryrun(void)
1384 {
1385         return dump_cmdline || parse_only;
1386 }
1387
1388 static void gen_log_name(char *name, size_t size, const char *logtype,
1389                          const char *logname, unsigned int num,
1390                          const char *suf, int per_job)
1391 {
1392         if (per_job)
1393                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1394         else
1395                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1396 }
1397
1398 static int check_waitees(char *waitee)
1399 {
1400         int ret = 0;
1401
1402         for_each_td(td) {
1403                 if (td->subjob_number)
1404                         continue;
1405
1406                 ret += !strcmp(td->o.name, waitee);
1407         } end_for_each();
1408
1409         return ret;
1410 }
1411
1412 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1413 {
1414         int nw;
1415
1416         if (!o->wait_for)
1417                 return true;
1418
1419         if (!strcmp(jobname, o->wait_for)) {
1420                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1421                                 jobname, o->wait_for);
1422                 return false;
1423         }
1424
1425         if (!(nw = check_waitees(o->wait_for))) {
1426                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1427                 return false;
1428         }
1429
1430         if (nw > 1) {
1431                 log_err("%s: multiple waitees %s found,\n"
1432                         "please avoid duplicates when using wait_for option.\n",
1433                                 jobname, o->wait_for);
1434                 return false;
1435         }
1436
1437         return true;
1438 }
1439
1440 static int verify_per_group_options(struct thread_data *td, const char *jobname)
1441 {
1442         for_each_td(td2) {
1443                 if (td->groupid != td2->groupid)
1444                         continue;
1445
1446                 if (td->o.stats &&
1447                     td->o.lat_percentiles != td2->o.lat_percentiles) {
1448                         log_err("fio: lat_percentiles in job: %s differs from group\n",
1449                                 jobname);
1450                         return 1;
1451                 }
1452         } end_for_each();
1453
1454         return 0;
1455 }
1456
1457 /*
1458  * Treat an empty log file name the same as a one not given
1459  */
1460 static const char *make_log_name(const char *logname, const char *jobname)
1461 {
1462         if (logname && strcmp(logname, ""))
1463                 return logname;
1464
1465         return jobname;
1466 }
1467
1468 /*
1469  * Adds a job to the list of things todo. Sanitizes the various options
1470  * to make sure we don't have conflicts, and initializes various
1471  * members of td.
1472  */
1473 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1474                    int recursed, int client_type)
1475 {
1476         unsigned int i;
1477         char fname[PATH_MAX + 1];
1478         int numjobs, file_alloced;
1479         struct thread_options *o = &td->o;
1480         char logname[PATH_MAX + 32];
1481
1482         /*
1483          * the def_thread is just for options, it's not a real job
1484          */
1485         if (td == &def_thread)
1486                 return 0;
1487
1488         init_flags(td);
1489
1490         /*
1491          * if we are just dumping the output command line, don't add the job
1492          */
1493         if (parse_dryrun()) {
1494                 put_job(td);
1495                 return 0;
1496         }
1497
1498         td->client_type = client_type;
1499
1500         if (profile_td_init(td))
1501                 goto err;
1502
1503         if (ioengine_load(td))
1504                 goto err;
1505
1506         file_alloced = 0;
1507         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1508                 file_alloced = 1;
1509
1510                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1511                         add_file(td, jobname, job_add_num, 0);
1512                 else {
1513                         for (i = 0; i < o->nr_files; i++)
1514                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1515                 }
1516         }
1517
1518         if (setup_random_seeds(td)) {
1519                 td_verror(td, errno, "setup_random_seeds");
1520                 goto err;
1521         }
1522
1523         if (fixup_options(td))
1524                 goto err;
1525
1526         if (!td->o.dedupe_global && init_dedupe_working_set_seeds(td, 0))
1527                 goto err;
1528
1529         /*
1530          * Belongs to fixup_options, but o->name is not necessarily set as yet
1531          */
1532         if (!wait_for_ok(jobname, o))
1533                 goto err;
1534
1535         flow_init_job(td);
1536
1537         /*
1538          * IO engines only need this for option callbacks, and the address may
1539          * change in subprocesses.
1540          */
1541         if (td->eo)
1542                 *(struct thread_data **)td->eo = NULL;
1543
1544         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1545                 struct fio_file *f;
1546
1547                 for_each_file(td, f, i)
1548                         f->real_file_size = -1ULL;
1549         }
1550
1551         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1552
1553         td->ts.clat_percentiles = o->clat_percentiles;
1554         td->ts.lat_percentiles = o->lat_percentiles;
1555         td->ts.slat_percentiles = o->slat_percentiles;
1556         td->ts.percentile_precision = o->percentile_precision;
1557         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1558         td->ts.sig_figs = o->sig_figs;
1559
1560         init_thread_stat_min_vals(&td->ts);
1561
1562         /*
1563          * td->>ddir_seq_nr needs to be initialized to 1, NOT o->ddir_seq_nr,
1564          * so that get_next_offset gets a new random offset the first time it
1565          * is called, instead of keeping an initial offset of 0 for the first
1566          * nr-1 calls
1567          */
1568         td->ddir_seq_nr = 1;
1569
1570         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1571                 prev_group_jobs = 0;
1572                 groupid++;
1573                 if (groupid == INT_MAX) {
1574                         log_err("fio: too many groups defined\n");
1575                         goto err;
1576                 }
1577         }
1578
1579         td->groupid = groupid;
1580         prev_group_jobs++;
1581
1582         if (td->o.group_reporting && prev_group_jobs > 1 &&
1583             verify_per_group_options(td, jobname))
1584                 goto err;
1585
1586         if (setup_rate(td))
1587                 goto err;
1588
1589         if (o->write_lat_log) {
1590                 struct log_params p = {
1591                         .td = td,
1592                         .avg_msec = o->log_avg_msec,
1593                         .hist_msec = o->log_hist_msec,
1594                         .hist_coarseness = o->log_hist_coarseness,
1595                         .log_type = IO_LOG_TYPE_LAT,
1596                         .log_offset = o->log_offset,
1597                         .log_prio = o->log_prio,
1598                         .log_gz = o->log_gz,
1599                         .log_gz_store = o->log_gz_store,
1600                 };
1601                 const char *pre = make_log_name(o->lat_log_file, o->name);
1602                 const char *suf;
1603
1604                 if (p.log_gz_store)
1605                         suf = "log.fz";
1606                 else
1607                         suf = "log";
1608
1609                 if (!o->disable_lat) {
1610                         gen_log_name(logname, sizeof(logname), "lat", pre,
1611                                      td->thread_number, suf, o->per_job_logs);
1612                         setup_log(&td->lat_log, &p, logname);
1613                 }
1614
1615                 if (!o->disable_slat) {
1616                         gen_log_name(logname, sizeof(logname), "slat", pre,
1617                                      td->thread_number, suf, o->per_job_logs);
1618                         setup_log(&td->slat_log, &p, logname);
1619                 }
1620
1621                 if (!o->disable_clat) {
1622                         gen_log_name(logname, sizeof(logname), "clat", pre,
1623                                      td->thread_number, suf, o->per_job_logs);
1624                         setup_log(&td->clat_log, &p, logname);
1625                 }
1626
1627         }
1628
1629         if (o->write_hist_log) {
1630                 struct log_params p = {
1631                         .td = td,
1632                         .avg_msec = o->log_avg_msec,
1633                         .hist_msec = o->log_hist_msec,
1634                         .hist_coarseness = o->log_hist_coarseness,
1635                         .log_type = IO_LOG_TYPE_HIST,
1636                         .log_offset = o->log_offset,
1637                         .log_prio = o->log_prio,
1638                         .log_gz = o->log_gz,
1639                         .log_gz_store = o->log_gz_store,
1640                 };
1641                 const char *pre = make_log_name(o->hist_log_file, o->name);
1642                 const char *suf;
1643
1644 #ifndef CONFIG_ZLIB
1645                 if (td->client_type) {
1646                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1647                         goto err;
1648                 }
1649 #endif
1650
1651                 if (p.log_gz_store)
1652                         suf = "log.fz";
1653                 else
1654                         suf = "log";
1655
1656                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1657                                 td->thread_number, suf, o->per_job_logs);
1658                 setup_log(&td->clat_hist_log, &p, logname);
1659         }
1660
1661         if (o->write_bw_log) {
1662                 struct log_params p = {
1663                         .td = td,
1664                         .avg_msec = o->log_avg_msec,
1665                         .hist_msec = o->log_hist_msec,
1666                         .hist_coarseness = o->log_hist_coarseness,
1667                         .log_type = IO_LOG_TYPE_BW,
1668                         .log_offset = o->log_offset,
1669                         .log_prio = o->log_prio,
1670                         .log_gz = o->log_gz,
1671                         .log_gz_store = o->log_gz_store,
1672                 };
1673                 const char *pre = make_log_name(o->bw_log_file, o->name);
1674                 const char *suf;
1675
1676                 if (fio_option_is_set(o, bw_avg_time))
1677                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1678                 else
1679                         o->bw_avg_time = p.avg_msec;
1680
1681                 p.hist_msec = o->log_hist_msec;
1682                 p.hist_coarseness = o->log_hist_coarseness;
1683
1684                 if (p.log_gz_store)
1685                         suf = "log.fz";
1686                 else
1687                         suf = "log";
1688
1689                 gen_log_name(logname, sizeof(logname), "bw", pre,
1690                                 td->thread_number, suf, o->per_job_logs);
1691                 setup_log(&td->bw_log, &p, logname);
1692         }
1693         if (o->write_iops_log) {
1694                 struct log_params p = {
1695                         .td = td,
1696                         .avg_msec = o->log_avg_msec,
1697                         .hist_msec = o->log_hist_msec,
1698                         .hist_coarseness = o->log_hist_coarseness,
1699                         .log_type = IO_LOG_TYPE_IOPS,
1700                         .log_offset = o->log_offset,
1701                         .log_prio = o->log_prio,
1702                         .log_gz = o->log_gz,
1703                         .log_gz_store = o->log_gz_store,
1704                 };
1705                 const char *pre = make_log_name(o->iops_log_file, o->name);
1706                 const char *suf;
1707
1708                 if (fio_option_is_set(o, iops_avg_time))
1709                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1710                 else
1711                         o->iops_avg_time = p.avg_msec;
1712
1713                 p.hist_msec = o->log_hist_msec;
1714                 p.hist_coarseness = o->log_hist_coarseness;
1715
1716                 if (p.log_gz_store)
1717                         suf = "log.fz";
1718                 else
1719                         suf = "log";
1720
1721                 gen_log_name(logname, sizeof(logname), "iops", pre,
1722                                 td->thread_number, suf, o->per_job_logs);
1723                 setup_log(&td->iops_log, &p, logname);
1724         }
1725
1726         if (!o->name)
1727                 o->name = strdup(jobname);
1728
1729         if (output_format & FIO_OUTPUT_NORMAL) {
1730                 if (!job_add_num) {
1731                         if (is_backend && !recursed)
1732                                 fio_server_send_add_job(td);
1733
1734                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1735                                 char *c1, *c2, *c3, *c4;
1736                                 char *c5 = NULL, *c6 = NULL;
1737                                 int i2p = is_power_of_2(o->kb_base);
1738                                 struct buf_output out;
1739
1740                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1741                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1742                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1743                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1744
1745                                 if (!o->bs_is_seq_rand) {
1746                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1747                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1748                                 }
1749
1750                                 buf_output_init(&out);
1751                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1752                                                         td->groupid,
1753                                                         ddir_str(o->td_ddir));
1754
1755                                 if (o->bs_is_seq_rand)
1756                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1757                                                         c1, c2, c3, c4);
1758                                 else
1759                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1760                                                         c1, c2, c3, c4, c5, c6);
1761
1762                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1763                                                 td->io_ops->name, o->iodepth);
1764                                 log_info_buf(out.buf, out.buflen);
1765                                 buf_output_free(&out);
1766
1767                                 free(c1);
1768                                 free(c2);
1769                                 free(c3);
1770                                 free(c4);
1771                                 free(c5);
1772                                 free(c6);
1773                         }
1774                 } else if (job_add_num == 1)
1775                         log_info("...\n");
1776         }
1777
1778         if (td_steadystate_init(td))
1779                 goto err;
1780
1781         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1782                 goto err;
1783
1784         if (merge_blktrace_only) {
1785                 put_job(td);
1786                 return 0;
1787         }
1788
1789         /*
1790          * recurse add identical jobs, clear numjobs and stonewall options
1791          * as they don't apply to sub-jobs
1792          */
1793         numjobs = o->numjobs;
1794         while (--numjobs) {
1795                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1796
1797                 if (!td_new)
1798                         goto err;
1799
1800                 td_new->o.numjobs = 1;
1801                 td_new->o.stonewall = 0;
1802                 td_new->o.new_group = 0;
1803                 td_new->subjob_number = numjobs;
1804                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1805                 td_new->o.ss_limit = o->ss_limit;
1806
1807                 if (file_alloced) {
1808                         if (td_new->files) {
1809                                 struct fio_file *f;
1810                                 for_each_file(td_new, f, i)
1811                                         fio_file_free(f);
1812                                 free(td_new->files);
1813                                 td_new->files = NULL;
1814                         }
1815                         td_new->files_index = 0;
1816                         td_new->files_size = 0;
1817                         if (td_new->o.filename) {
1818                                 free(td_new->o.filename);
1819                                 td_new->o.filename = NULL;
1820                         }
1821                 }
1822
1823                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1824                         goto err;
1825         }
1826
1827         return 0;
1828 err:
1829         put_job(td);
1830         return -1;
1831 }
1832
1833 /*
1834  * Parse as if 'o' was a command line
1835  */
1836 void add_job_opts(const char **o, int client_type)
1837 {
1838         struct thread_data *td, *td_parent;
1839         int i, in_global = 1;
1840         char jobname[32];
1841
1842         i = 0;
1843         td_parent = td = NULL;
1844         while (o[i]) {
1845                 if (!strncmp(o[i], "name", 4)) {
1846                         in_global = 0;
1847                         if (td)
1848                                 add_job(td, jobname, 0, 0, client_type);
1849                         td = NULL;
1850                         sprintf(jobname, "%s", o[i] + 5);
1851                 }
1852                 if (in_global && !td_parent)
1853                         td_parent = get_new_job(true, &def_thread, false, jobname);
1854                 else if (!in_global && !td) {
1855                         if (!td_parent)
1856                                 td_parent = &def_thread;
1857                         td = get_new_job(false, td_parent, false, jobname);
1858                 }
1859                 if (in_global)
1860                         fio_options_parse(td_parent, (char **) &o[i], 1);
1861                 else
1862                         fio_options_parse(td, (char **) &o[i], 1);
1863                 i++;
1864         }
1865
1866         if (td)
1867                 add_job(td, jobname, 0, 0, client_type);
1868 }
1869
1870 static int skip_this_section(const char *name)
1871 {
1872         int i;
1873
1874         if (!nr_job_sections)
1875                 return 0;
1876         if (!strncmp(name, "global", 6))
1877                 return 0;
1878
1879         for (i = 0; i < nr_job_sections; i++)
1880                 if (!strcmp(job_sections[i], name))
1881                         return 0;
1882
1883         return 1;
1884 }
1885
1886 static int is_empty_or_comment(char *line)
1887 {
1888         unsigned int i;
1889
1890         for (i = 0; i < strlen(line); i++) {
1891                 if (line[i] == ';')
1892                         return 1;
1893                 if (line[i] == '#')
1894                         return 1;
1895                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1896                         return 0;
1897         }
1898
1899         return 1;
1900 }
1901
1902 /*
1903  * This is our [ini] type file parser.
1904  */
1905 static int __parse_jobs_ini(struct thread_data *td,
1906                 char *file, int is_buf, int stonewall_flag, int type,
1907                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1908 {
1909         bool global = false;
1910         bool stdin_occupied = false;
1911         char *string;
1912         FILE *f;
1913         char *p;
1914         int ret = 0, stonewall;
1915         int first_sect = 1;
1916         int skip_fgets = 0;
1917         int inside_skip = 0;
1918         char **opts;
1919         int i, alloc_opts, num_opts;
1920
1921         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1922         assert(td || !nested);
1923
1924         if (is_buf)
1925                 f = NULL;
1926         else {
1927                 if (!strcmp(file, "-")) {
1928                         f = stdin;
1929                         stdin_occupied = true;
1930                 } else
1931                         f = fopen(file, "r");
1932
1933                 if (!f) {
1934                         int __err = errno;
1935
1936                         log_err("fio: unable to open '%s' job file\n", file);
1937                         if (td)
1938                                 td_verror(td, __err, "job file open");
1939                         return 1;
1940                 }
1941         }
1942
1943         string = malloc(OPT_LEN_MAX);
1944
1945         /*
1946          * it's really 256 + small bit, 280 should suffice
1947          */
1948         if (!nested) {
1949                 name = calloc(1, 280);
1950         }
1951
1952         opts = NULL;
1953         if (nested && popts) {
1954                 opts = *popts;
1955                 alloc_opts = *aopts;
1956                 num_opts = *nopts;
1957         }
1958
1959         if (!opts) {
1960                 alloc_opts = 8;
1961                 opts = malloc(sizeof(char *) * alloc_opts);
1962                 num_opts = 0;
1963         }
1964
1965         stonewall = stonewall_flag;
1966         do {
1967                 /*
1968                  * if skip_fgets is set, we already have loaded a line we
1969                  * haven't handled.
1970                  */
1971                 if (!skip_fgets) {
1972                         if (is_buf)
1973                                 p = strsep(&file, "\n");
1974                         else
1975                                 p = fgets(string, OPT_LEN_MAX, f);
1976                         if (!p)
1977                                 break;
1978                 }
1979
1980                 skip_fgets = 0;
1981                 strip_blank_front(&p);
1982                 strip_blank_end(p);
1983
1984                 dprint(FD_PARSE, "%s\n", p);
1985                 if (is_empty_or_comment(p))
1986                         continue;
1987
1988                 if (!nested) {
1989                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1990                                 if (inside_skip)
1991                                         continue;
1992
1993                                 log_err("fio: option <%s> outside of "
1994                                         "[] job section\n", p);
1995                                 ret = 1;
1996                                 break;
1997                         }
1998
1999                         name[strlen(name) - 1] = '\0';
2000
2001                         if (skip_this_section(name)) {
2002                                 inside_skip = 1;
2003                                 continue;
2004                         } else
2005                                 inside_skip = 0;
2006
2007                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
2008
2009                         global = !strncmp(name, "global", 6);
2010
2011                         if (dump_cmdline) {
2012                                 if (first_sect)
2013                                         log_info("fio ");
2014                                 if (!global)
2015                                         log_info("--name=%s ", name);
2016                                 first_sect = 0;
2017                         }
2018
2019                         td = get_new_job(global, &def_thread, false, name);
2020                         if (!td) {
2021                                 ret = 1;
2022                                 break;
2023                         }
2024
2025                         /*
2026                          * Separate multiple job files by a stonewall
2027                          */
2028                         if (!global && stonewall) {
2029                                 td->o.stonewall = stonewall;
2030                                 stonewall = 0;
2031                         }
2032
2033                         num_opts = 0;
2034                         memset(opts, 0, alloc_opts * sizeof(char *));
2035                 }
2036                 else
2037                         skip_fgets = 1;
2038
2039                 while (1) {
2040                         if (!skip_fgets) {
2041                                 if (is_buf)
2042                                         p = strsep(&file, "\n");
2043                                 else
2044                                         p = fgets(string, OPT_LEN_MAX, f);
2045                                 if (!p)
2046                                         break;
2047                                 dprint(FD_PARSE, "%s", p);
2048                         }
2049                         else
2050                                 skip_fgets = 0;
2051
2052                         if (is_empty_or_comment(p))
2053                                 continue;
2054
2055                         strip_blank_front(&p);
2056
2057                         /*
2058                          * new section, break out and make sure we don't
2059                          * fgets() a new line at the top.
2060                          */
2061                         if (p[0] == '[') {
2062                                 if (nested) {
2063                                         log_err("No new sections in included files\n");
2064                                         ret = 1;
2065                                         goto out;
2066                                 }
2067
2068                                 skip_fgets = 1;
2069                                 break;
2070                         }
2071
2072                         strip_blank_end(p);
2073
2074                         if (!strncmp(p, "include", strlen("include"))) {
2075                                 char *filename = p + strlen("include") + 1,
2076                                         *ts, *full_fn = NULL;
2077
2078                                 /*
2079                                  * Allow for the include filename
2080                                  * specification to be relative.
2081                                  */
2082                                 if (access(filename, F_OK) &&
2083                                     (ts = strrchr(file, '/'))) {
2084                                         if (asprintf(&full_fn, "%.*s%s",
2085                                                  (int)(ts - file + 1), file,
2086                                                  filename) < 0) {
2087                                                 ret = ENOMEM;
2088                                                 break;
2089                                         }
2090                                         filename = full_fn;
2091                                 }
2092
2093                                 ret = __parse_jobs_ini(td, filename, is_buf,
2094                                                        stonewall_flag, type, 1,
2095                                                        name, &opts,
2096                                                        &alloc_opts, &num_opts);
2097
2098                                 if (ret) {
2099                                         log_err("Error %d while parsing "
2100                                                 "include file %s\n",
2101                                                 ret, filename);
2102                                 }
2103
2104                                 if (full_fn)
2105                                         free(full_fn);
2106
2107                                 if (ret)
2108                                         break;
2109
2110                                 continue;
2111                         }
2112
2113                         if (num_opts == alloc_opts) {
2114                                 alloc_opts <<= 1;
2115                                 opts = realloc(opts,
2116                                                 alloc_opts * sizeof(char *));
2117                         }
2118
2119                         opts[num_opts] = strdup(p);
2120                         num_opts++;
2121                 }
2122
2123                 if (nested) {
2124                         *popts = opts;
2125                         *aopts = alloc_opts;
2126                         *nopts = num_opts;
2127                         goto out;
2128                 }
2129
2130                 ret = fio_options_parse(td, opts, num_opts);
2131
2132                 if (!ret && td->o.read_iolog_file != NULL) {
2133                         char *fname = get_name_by_idx(td->o.read_iolog_file,
2134                                                       td->subjob_number);
2135                         if (!strcmp(fname, "-")) {
2136                                 if (stdin_occupied) {
2137                                         log_err("fio: only one user (read_iolog_file/job "
2138                                                 "file) of stdin is permitted at once but "
2139                                                 "more than one was found.\n");
2140                                         ret = 1;
2141                                 }
2142                                 stdin_occupied = true;
2143                         }
2144                 }
2145                 if (!ret) {
2146                         if (dump_cmdline)
2147                                 dump_opt_list(td);
2148
2149                         ret = add_job(td, name, 0, 0, type);
2150                 } else {
2151                         log_err("fio: job %s dropped\n", name);
2152                         put_job(td);
2153                 }
2154
2155                 for (i = 0; i < num_opts; i++)
2156                         free(opts[i]);
2157                 num_opts = 0;
2158         } while (!ret);
2159
2160         if (dump_cmdline)
2161                 log_info("\n");
2162
2163         i = 0;
2164         while (i < nr_job_sections) {
2165                 free(job_sections[i]);
2166                 i++;
2167         }
2168
2169         free(job_sections);
2170         job_sections = NULL;
2171         nr_job_sections = 0;
2172
2173         free(opts);
2174 out:
2175         free(string);
2176         if (!nested)
2177                 free(name);
2178         if (!is_buf && f != stdin)
2179                 fclose(f);
2180         return ret;
2181 }
2182
2183 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2184 {
2185         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2186                         0, NULL, NULL, NULL, NULL);
2187 }
2188
2189 static int fill_def_thread(void)
2190 {
2191         memset(&def_thread, 0, sizeof(def_thread));
2192         INIT_FLIST_HEAD(&def_thread.opt_list);
2193
2194         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2195         def_thread.o.error_dump = 1;
2196
2197         /*
2198          * fill default options
2199          */
2200         fio_fill_default_options(&def_thread);
2201         return 0;
2202 }
2203
2204 static void show_debug_categories(void)
2205 {
2206 #ifdef FIO_INC_DEBUG
2207         const struct debug_level *dl = &debug_levels[0];
2208         int curlen, first = 1;
2209
2210         curlen = 0;
2211         while (dl->name) {
2212                 int has_next = (dl + 1)->name != NULL;
2213
2214                 if (first || curlen + strlen(dl->name) >= 80) {
2215                         if (!first) {
2216                                 printf("\n");
2217                                 curlen = 0;
2218                         }
2219                         curlen += printf("\t\t\t%s", dl->name);
2220                         curlen += 3 * (8 - 1);
2221                         if (has_next)
2222                                 curlen += printf(",");
2223                 } else {
2224                         curlen += printf("%s", dl->name);
2225                         if (has_next)
2226                                 curlen += printf(",");
2227                 }
2228                 dl++;
2229                 first = 0;
2230         }
2231         printf("\n");
2232 #endif
2233 }
2234
2235 /*
2236  * Following options aren't printed by usage().
2237  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2238  * --latency-log - Deprecated option.
2239  */
2240 static void usage(const char *name)
2241 {
2242         printf("%s\n", fio_version_string);
2243         printf("%s [options] [job options] <job file(s)>\n", name);
2244         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2245         show_debug_categories();
2246         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2247         printf("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2248         printf("  --output\t\tWrite output to file\n");
2249         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2250         printf("  --minimal\t\tMinimal (terse) output\n");
2251         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2252         printf("  --terse-version=type\tSet terse version output format"
2253                 " (default 3, or 2 or 4 or 5)\n");
2254         printf("  --version\t\tPrint version info and exit\n");
2255         printf("  --help\t\tPrint this page\n");
2256         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2257         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2258         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2259                 " them\n");
2260         printf("  --enghelp=engine\tPrint ioengine help, or list"
2261                 " available ioengines\n");
2262         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2263                 " cmd\n");
2264         printf("  --showcmd\t\tTurn a job file into command line options\n");
2265         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2266         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2267         printf("  --eta-newline=t\tForce a new line for every 't'");
2268         printf(" period passed\n");
2269         printf("  --status-interval=t\tForce full status dump every");
2270         printf(" 't' period passed\n");
2271         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2272                 " writes\n");
2273         printf("  --section=name\tOnly run specified section in job file,"
2274                 " multiple sections can be specified\n");
2275         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2276                 " (def 16384)\n");
2277         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2278         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2279         printf("  --server=args\t\tStart a backend fio server\n");
2280         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2281         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2282         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2283         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2284                 "\t\t\t(option=system,percpu) or run unit work\n"
2285                 "\t\t\tcalibration only (option=calibrate)\n");
2286 #ifdef CONFIG_ZLIB
2287         printf("  --inflate-log=log\tInflate and output compressed log\n");
2288 #endif
2289         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2290         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2291         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2292         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2293         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2294         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2295 }
2296
2297 #ifdef FIO_INC_DEBUG
2298 const struct debug_level debug_levels[] = {
2299         { .name = "process",
2300           .help = "Process creation/exit logging",
2301           .shift = FD_PROCESS,
2302         },
2303         { .name = "file",
2304           .help = "File related action logging",
2305           .shift = FD_FILE,
2306         },
2307         { .name = "io",
2308           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2309           .shift = FD_IO,
2310         },
2311         { .name = "mem",
2312           .help = "Memory allocation/freeing logging",
2313           .shift = FD_MEM,
2314         },
2315         { .name = "blktrace",
2316           .help = "blktrace action logging",
2317           .shift = FD_BLKTRACE,
2318         },
2319         { .name = "verify",
2320           .help = "IO verification action logging",
2321           .shift = FD_VERIFY,
2322         },
2323         { .name = "random",
2324           .help = "Random generation logging",
2325           .shift = FD_RANDOM,
2326         },
2327         { .name = "parse",
2328           .help = "Parser logging",
2329           .shift = FD_PARSE,
2330         },
2331         { .name = "diskutil",
2332           .help = "Disk utility logging actions",
2333           .shift = FD_DISKUTIL,
2334         },
2335         { .name = "job",
2336           .help = "Logging related to creating/destroying jobs",
2337           .shift = FD_JOB,
2338         },
2339         { .name = "mutex",
2340           .help = "Mutex logging",
2341           .shift = FD_MUTEX
2342         },
2343         { .name = "profile",
2344           .help = "Logging related to profiles",
2345           .shift = FD_PROFILE,
2346         },
2347         { .name = "time",
2348           .help = "Logging related to time keeping functions",
2349           .shift = FD_TIME,
2350         },
2351         { .name = "net",
2352           .help = "Network logging",
2353           .shift = FD_NET,
2354         },
2355         { .name = "rate",
2356           .help = "Rate logging",
2357           .shift = FD_RATE,
2358         },
2359         { .name = "compress",
2360           .help = "Log compression logging",
2361           .shift = FD_COMPRESS,
2362         },
2363         { .name = "steadystate",
2364           .help = "Steady state detection logging",
2365           .shift = FD_STEADYSTATE,
2366         },
2367         { .name = "helperthread",
2368           .help = "Helper thread logging",
2369           .shift = FD_HELPERTHREAD,
2370         },
2371         { .name = "zbd",
2372           .help = "Zoned Block Device logging",
2373           .shift = FD_ZBD,
2374         },
2375         { .name = NULL, },
2376 };
2377
2378 static int set_debug(const char *string)
2379 {
2380         const struct debug_level *dl;
2381         char *p = (char *) string;
2382         char *opt;
2383         int i;
2384
2385         if (!string)
2386                 return 0;
2387
2388         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2389                 log_info("fio: dumping debug options:");
2390                 for (i = 0; debug_levels[i].name; i++) {
2391                         dl = &debug_levels[i];
2392                         log_info("%s,", dl->name);
2393                 }
2394                 log_info("all\n");
2395                 return 1;
2396         }
2397
2398         while ((opt = strsep(&p, ",")) != NULL) {
2399                 int found = 0;
2400
2401                 if (!strncmp(opt, "all", 3)) {
2402                         log_info("fio: set all debug options\n");
2403                         fio_debug = ~0UL;
2404                         continue;
2405                 }
2406
2407                 for (i = 0; debug_levels[i].name; i++) {
2408                         dl = &debug_levels[i];
2409                         found = !strncmp(opt, dl->name, strlen(dl->name));
2410                         if (!found)
2411                                 continue;
2412
2413                         if (dl->shift == FD_JOB) {
2414                                 opt = strchr(opt, ':');
2415                                 if (!opt) {
2416                                         log_err("fio: missing job number\n");
2417                                         break;
2418                                 }
2419                                 opt++;
2420                                 fio_debug_jobno = atoi(opt);
2421                                 log_info("fio: set debug jobno %d\n",
2422                                                         fio_debug_jobno);
2423                         } else {
2424                                 log_info("fio: set debug option %s\n", opt);
2425                                 fio_debug |= (1UL << dl->shift);
2426                         }
2427                         break;
2428                 }
2429
2430                 if (!found)
2431                         log_err("fio: debug mask %s not found\n", opt);
2432         }
2433         return 0;
2434 }
2435 #else
2436 static int set_debug(const char *string)
2437 {
2438         log_err("fio: debug tracing not included in build\n");
2439         return 1;
2440 }
2441 #endif
2442
2443 static void fio_options_fill_optstring(void)
2444 {
2445         char *ostr = cmd_optstr;
2446         int i, c;
2447
2448         c = i = 0;
2449         while (l_opts[i].name) {
2450                 ostr[c++] = l_opts[i].val;
2451                 if (l_opts[i].has_arg == required_argument)
2452                         ostr[c++] = ':';
2453                 else if (l_opts[i].has_arg == optional_argument) {
2454                         ostr[c++] = ':';
2455                         ostr[c++] = ':';
2456                 }
2457                 i++;
2458         }
2459         ostr[c] = '\0';
2460 }
2461
2462 static int client_flag_set(char c)
2463 {
2464         int i;
2465
2466         i = 0;
2467         while (l_opts[i].name) {
2468                 int val = l_opts[i].val;
2469
2470                 if (c == (val & 0xff))
2471                         return (val & FIO_CLIENT_FLAG);
2472
2473                 i++;
2474         }
2475
2476         return 0;
2477 }
2478
2479 static void parse_cmd_client(void *client, char *opt)
2480 {
2481         fio_client_add_cmd_option(client, opt);
2482 }
2483
2484 static void show_closest_option(const char *name)
2485 {
2486         int best_option, best_distance;
2487         int i, distance;
2488
2489         while (*name == '-')
2490                 name++;
2491
2492         best_option = -1;
2493         best_distance = INT_MAX;
2494         i = 0;
2495         while (l_opts[i].name) {
2496                 distance = string_distance(name, l_opts[i].name);
2497                 if (distance < best_distance) {
2498                         best_distance = distance;
2499                         best_option = i;
2500                 }
2501                 i++;
2502         }
2503
2504         if (best_option != -1 && string_distance_ok(name, best_distance))
2505                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2506 }
2507
2508 static int parse_output_format(const char *optarg)
2509 {
2510         char *p, *orig, *opt;
2511         int ret = 0;
2512
2513         p = orig = strdup(optarg);
2514
2515         output_format = 0;
2516
2517         while ((opt = strsep(&p, ",")) != NULL) {
2518                 if (!strcmp(opt, "minimal") ||
2519                     !strcmp(opt, "terse") ||
2520                     !strcmp(opt, "csv"))
2521                         output_format |= FIO_OUTPUT_TERSE;
2522                 else if (!strcmp(opt, "json"))
2523                         output_format |= FIO_OUTPUT_JSON;
2524                 else if (!strcmp(opt, "json+"))
2525                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2526                 else if (!strcmp(opt, "normal"))
2527                         output_format |= FIO_OUTPUT_NORMAL;
2528                 else {
2529                         log_err("fio: invalid output format %s\n", opt);
2530                         ret = 1;
2531                         break;
2532                 }
2533         }
2534
2535         free(orig);
2536         return ret;
2537 }
2538
2539 int parse_cmd_line(int argc, char *argv[], int client_type)
2540 {
2541         struct thread_data *td = NULL;
2542         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2543         char *ostr = cmd_optstr;
2544         char *pid_file = NULL;
2545         void *cur_client = NULL;
2546         bool backend = false;
2547
2548         /*
2549          * Reset optind handling, since we may call this multiple times
2550          * for the backend.
2551          */
2552         optind = 1;
2553
2554         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2555                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2556                         parse_cmd_client(cur_client, argv[optind - 1]);
2557                         c &= ~FIO_CLIENT_FLAG;
2558                 }
2559
2560                 switch (c) {
2561                 case 'a':
2562                         smalloc_pool_size = atoi(optarg);
2563                         smalloc_pool_size <<= 10;
2564                         sinit();
2565                         break;
2566                 case 'l':
2567                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2568                         do_exit++;
2569                         exit_val = 1;
2570                         break;
2571                 case 'b':
2572                         write_bw_log = true;
2573                         break;
2574                 case 'o': {
2575                         FILE *tmp;
2576
2577                         if (f_out && f_out != stdout)
2578                                 fclose(f_out);
2579
2580                         tmp = fopen(optarg, "w+");
2581                         if (!tmp) {
2582                                 log_err("fio: output file open error: %s\n", strerror(errno));
2583                                 exit_val = 1;
2584                                 do_exit++;
2585                                 break;
2586                         }
2587                         f_err = f_out = tmp;
2588                         break;
2589                         }
2590                 case 'm':
2591                         output_format = FIO_OUTPUT_TERSE;
2592                         break;
2593                 case 'F':
2594                         if (parse_output_format(optarg)) {
2595                                 log_err("fio: failed parsing output-format\n");
2596                                 exit_val = 1;
2597                                 do_exit++;
2598                                 break;
2599                         }
2600                         break;
2601                 case 'f':
2602                         output_format |= FIO_OUTPUT_TERSE;
2603                         break;
2604                 case 'h':
2605                         did_arg = true;
2606                         if (!cur_client) {
2607                                 usage(argv[0]);
2608                                 do_exit++;
2609                         }
2610                         break;
2611                 case 'c':
2612                         did_arg = true;
2613                         if (!cur_client) {
2614                                 fio_show_option_help(optarg);
2615                                 do_exit++;
2616                         }
2617                         break;
2618                 case 'i':
2619                         did_arg = true;
2620                         if (!cur_client) {
2621                                 exit_val = fio_show_ioengine_help(optarg);
2622                                 do_exit++;
2623                         }
2624                         break;
2625                 case 's':
2626                         did_arg = true;
2627                         dump_cmdline = true;
2628                         break;
2629                 case 'r':
2630                         read_only = 1;
2631                         break;
2632                 case 'v':
2633                         did_arg = true;
2634                         if (!cur_client) {
2635                                 log_info("%s\n", fio_version_string);
2636                                 do_exit++;
2637                         }
2638                         break;
2639                 case 'V':
2640                         terse_version = atoi(optarg);
2641                         if (!(terse_version >= 2 && terse_version <= 5)) {
2642                                 log_err("fio: bad terse version format\n");
2643                                 exit_val = 1;
2644                                 do_exit++;
2645                         }
2646                         break;
2647                 case 'e':
2648                         if (!strcmp("always", optarg))
2649                                 eta_print = FIO_ETA_ALWAYS;
2650                         else if (!strcmp("never", optarg))
2651                                 eta_print = FIO_ETA_NEVER;
2652                         break;
2653                 case 'E': {
2654                         long long t = 0;
2655
2656                         if (check_str_time(optarg, &t, 1)) {
2657                                 log_err("fio: failed parsing eta time %s\n", optarg);
2658                                 exit_val = 1;
2659                                 do_exit++;
2660                                 break;
2661                         }
2662                         eta_new_line = t / 1000;
2663                         if (!eta_new_line) {
2664                                 log_err("fio: eta new line time too short\n");
2665                                 exit_val = 1;
2666                                 do_exit++;
2667                         }
2668                         break;
2669                         }
2670                 case 'O': {
2671                         long long t = 0;
2672
2673                         if (check_str_time(optarg, &t, 1)) {
2674                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2675                                 exit_val = 1;
2676                                 do_exit++;
2677                                 break;
2678                         }
2679                         eta_interval_msec = t / 1000;
2680                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2681                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2682                                 exit_val = 1;
2683                                 do_exit++;
2684                         }
2685                         break;
2686                         }
2687                 case 'd':
2688                         if (set_debug(optarg))
2689                                 do_exit++;
2690                         break;
2691                 case 'P':
2692                         did_arg = true;
2693                         parse_only = true;
2694                         break;
2695                 case 'x': {
2696                         size_t new_size;
2697
2698                         if (!strcmp(optarg, "global")) {
2699                                 log_err("fio: can't use global as only "
2700                                         "section\n");
2701                                 do_exit++;
2702                                 exit_val = 1;
2703                                 break;
2704                         }
2705                         new_size = (nr_job_sections + 1) * sizeof(char *);
2706                         job_sections = realloc(job_sections, new_size);
2707                         job_sections[nr_job_sections] = strdup(optarg);
2708                         nr_job_sections++;
2709                         break;
2710                         }
2711 #ifdef CONFIG_ZLIB
2712                 case 'X':
2713                         exit_val = iolog_file_inflate(optarg);
2714                         did_arg = true;
2715                         do_exit++;
2716                         break;
2717 #endif
2718                 case 'p':
2719                         did_arg = true;
2720                         if (exec_profile)
2721                                 free(exec_profile);
2722                         exec_profile = strdup(optarg);
2723                         break;
2724                 case FIO_GETOPT_JOB: {
2725                         const char *opt = l_opts[lidx].name;
2726                         char *val = optarg;
2727
2728                         if (!strncmp(opt, "name", 4) && td) {
2729                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2730                                 if (ret)
2731                                         goto out_free;
2732                                 td = NULL;
2733                                 did_arg = true;
2734                         }
2735                         if (!td) {
2736                                 int is_section = !strncmp(opt, "name", 4);
2737                                 int global = 0;
2738
2739                                 if (!is_section || !strncmp(val, "global", 6))
2740                                         global = 1;
2741
2742                                 if (is_section && skip_this_section(val))
2743                                         continue;
2744
2745                                 td = get_new_job(global, &def_thread, true, NULL);
2746                                 if (!td || ioengine_load(td)) {
2747                                         if (td) {
2748                                                 put_job(td);
2749                                                 td = NULL;
2750                                         }
2751                                         do_exit++;
2752                                         exit_val = 1;
2753                                         break;
2754                                 }
2755                                 fio_options_set_ioengine_opts(l_opts, td);
2756                         }
2757
2758                         if ((!val || !strlen(val)) &&
2759                             l_opts[lidx].has_arg == required_argument) {
2760                                 log_err("fio: option %s requires an argument\n", opt);
2761                                 ret = 1;
2762                         } else
2763                                 ret = fio_cmd_option_parse(td, opt, val);
2764
2765                         if (ret) {
2766                                 if (td) {
2767                                         put_job(td);
2768                                         td = NULL;
2769                                 }
2770                                 do_exit++;
2771                                 exit_val = 1;
2772                         }
2773
2774                         if (!ret && !strcmp(opt, "ioengine")) {
2775                                 if (ioengine_load(td)) {
2776                                         put_job(td);
2777                                         td = NULL;
2778                                         do_exit++;
2779                                         exit_val = 1;
2780                                         break;
2781                                 }
2782                                 fio_options_set_ioengine_opts(l_opts, td);
2783                         }
2784                         break;
2785                 }
2786                 case FIO_GETOPT_IOENGINE: {
2787                         const char *opt = l_opts[lidx].name;
2788                         char *val = optarg;
2789
2790                         if (!td)
2791                                 break;
2792
2793                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2794
2795                         if (ret) {
2796                                 if (td) {
2797                                         put_job(td);
2798                                         td = NULL;
2799                                 }
2800                                 do_exit++;
2801                                 exit_val = 1;
2802                         }
2803                         break;
2804                 }
2805                 case 'w':
2806                         warnings_fatal = 1;
2807                         break;
2808                 case 'j':
2809                         /* we don't track/need this anymore, ignore it */
2810                         break;
2811                 case 'S':
2812                         did_arg = true;
2813 #ifndef CONFIG_NO_SHM
2814                         if (nr_clients) {
2815                                 log_err("fio: can't be both client and server\n");
2816                                 do_exit++;
2817                                 exit_val = 1;
2818                                 break;
2819                         }
2820                         if (optarg)
2821                                 fio_server_set_arg(optarg);
2822                         is_backend = true;
2823                         backend = true;
2824 #else
2825                         log_err("fio: client/server requires SHM support\n");
2826                         do_exit++;
2827                         exit_val = 1;
2828 #endif
2829                         break;
2830 #ifdef WIN32
2831                 case 'N':
2832                         did_arg = true;
2833                         fio_server_internal_set(optarg);
2834                         break;
2835 #endif
2836                 case 'D':
2837                         if (pid_file)
2838                                 free(pid_file);
2839                         pid_file = strdup(optarg);
2840                         break;
2841                 case 'I':
2842                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2843                                 /* exit on error and calibration only */
2844                                 did_arg = true;
2845                                 do_exit++;
2846                                 if (ret == -1)
2847                                         exit_val = 1;
2848                         }
2849                         break;
2850                 case 'C':
2851                         did_arg = true;
2852                         if (is_backend) {
2853                                 log_err("fio: can't be both client and server\n");
2854                                 do_exit++;
2855                                 exit_val = 1;
2856                                 break;
2857                         }
2858                         /* if --client parameter contains a pathname */
2859                         if (0 == access(optarg, R_OK)) {
2860                                 /* file contains a list of host addrs or names */
2861                                 char hostaddr[PATH_MAX] = {0};
2862                                 char formatstr[8];
2863                                 FILE * hostf = fopen(optarg, "r");
2864                                 if (!hostf) {
2865                                         log_err("fio: could not open client list file %s for read\n", optarg);
2866                                         do_exit++;
2867                                         exit_val = 1;
2868                                         break;
2869                                 }
2870                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2871                                 /*
2872                                  * read at most PATH_MAX-1 chars from each
2873                                  * record in this file
2874                                  */
2875                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2876                                         /* expect EVERY host in file to be valid */
2877                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2878                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2879                                                 do_exit++;
2880                                                 exit_val = 1;
2881                                                 break;
2882                                         }
2883                                 }
2884                                 fclose(hostf);
2885                                 break; /* no possibility of job file for "this client only" */
2886                         }
2887                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2888                                 log_err("fio: failed adding client %s\n", optarg);
2889                                 do_exit++;
2890                                 exit_val = 1;
2891                                 break;
2892                         }
2893                         /*
2894                          * If the next argument exists and isn't an option,
2895                          * assume it's a job file for this client only.
2896                          */
2897                         while (optind < argc) {
2898                                 if (!strncmp(argv[optind], "--", 2) ||
2899                                     !strncmp(argv[optind], "-", 1))
2900                                         break;
2901
2902                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2903                                         break;
2904                                 optind++;
2905                         }
2906                         break;
2907                 case 'R':
2908                         did_arg = true;
2909                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2910                                 do_exit++;
2911                                 exit_val = 1;
2912                         }
2913                         break;
2914                 case 'T':
2915                         did_arg = true;
2916                         do_exit++;
2917                         exit_val = fio_monotonic_clocktest(1);
2918                         break;
2919                 case 'G':
2920                         did_arg = true;
2921                         do_exit++;
2922                         exit_val = fio_crctest(optarg);
2923                         break;
2924                 case 'M':
2925                         did_arg = true;
2926                         do_exit++;
2927                         exit_val = fio_memcpy_test(optarg);
2928                         break;
2929                 case 'L': {
2930                         long long val;
2931
2932                         if (check_str_time(optarg, &val, 1)) {
2933                                 log_err("fio: failed parsing time %s\n", optarg);
2934                                 do_exit++;
2935                                 exit_val = 1;
2936                                 break;
2937                         }
2938                         if (val < 1000) {
2939                                 log_err("fio: status interval too small\n");
2940                                 do_exit++;
2941                                 exit_val = 1;
2942                         }
2943                         status_interval = val / 1000;
2944                         break;
2945                         }
2946                 case 'W':
2947                         if (trigger_file)
2948                                 free(trigger_file);
2949                         trigger_file = strdup(optarg);
2950                         break;
2951                 case 'H':
2952                         if (trigger_cmd)
2953                                 free(trigger_cmd);
2954                         trigger_cmd = strdup(optarg);
2955                         break;
2956                 case 'J':
2957                         if (trigger_remote_cmd)
2958                                 free(trigger_remote_cmd);
2959                         trigger_remote_cmd = strdup(optarg);
2960                         break;
2961                 case 'K':
2962                         if (aux_path)
2963                                 free(aux_path);
2964                         aux_path = strdup(optarg);
2965                         break;
2966                 case 'B':
2967                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2968                                 log_err("fio: failed parsing time %s\n", optarg);
2969                                 do_exit++;
2970                                 exit_val = 1;
2971                         }
2972                         trigger_timeout /= 1000000;
2973                         break;
2974
2975                 case 'A':
2976                         did_arg = true;
2977                         merge_blktrace_only = true;
2978                         break;
2979                 case '?':
2980                         log_err("%s: unrecognized option '%s'\n", argv[0],
2981                                                         argv[optind - 1]);
2982                         show_closest_option(argv[optind - 1]);
2983                         fio_fallthrough;
2984                 default:
2985                         do_exit++;
2986                         exit_val = 1;
2987                         break;
2988                 }
2989                 if (do_exit)
2990                         break;
2991         }
2992
2993         if (do_exit && !(is_backend || nr_clients))
2994                 exit(exit_val);
2995
2996         if (nr_clients && fio_clients_connect())
2997                 exit(1);
2998
2999         if (is_backend && backend)
3000                 return fio_start_server(pid_file);
3001         else if (pid_file)
3002                 free(pid_file);
3003
3004         if (td) {
3005                 if (!ret) {
3006                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
3007                         if (ret)
3008                                 exit(1);
3009                 }
3010         }
3011
3012         while (!ret && optind < argc) {
3013                 ini_idx++;
3014                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
3015                 ini_file[ini_idx - 1] = strdup(argv[optind]);
3016                 optind++;
3017         }
3018
3019 out_free:
3020         return ini_idx;
3021 }
3022
3023 int fio_init_options(void)
3024 {
3025         f_out = stdout;
3026         f_err = stderr;
3027
3028         fio_options_fill_optstring();
3029         fio_options_dup_and_init(l_opts);
3030
3031         atexit(free_shm);
3032
3033         if (fill_def_thread())
3034                 return 1;
3035
3036         return 0;
3037 }
3038
3039 extern int fio_check_options(struct thread_options *);
3040
3041 int parse_options(int argc, char *argv[])
3042 {
3043         const int type = FIO_CLIENT_TYPE_CLI;
3044         int job_files, i;
3045
3046         if (fio_init_options())
3047                 return 1;
3048         if (fio_test_cconv(&def_thread.o))
3049                 log_err("fio: failed internal cconv test\n");
3050
3051         job_files = parse_cmd_line(argc, argv, type);
3052
3053         if (job_files > 0) {
3054                 for (i = 0; i < job_files; i++) {
3055                         if (i && fill_def_thread())
3056                                 return 1;
3057                         if (nr_clients) {
3058                                 if (fio_clients_send_ini(ini_file[i]))
3059                                         return 1;
3060                                 free(ini_file[i]);
3061                         } else if (!is_backend) {
3062                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
3063                                         return 1;
3064                                 free(ini_file[i]);
3065                         }
3066                 }
3067         } else if (nr_clients) {
3068                 if (fill_def_thread())
3069                         return 1;
3070                 if (fio_clients_send_ini(NULL))
3071                         return 1;
3072         }
3073
3074         free(ini_file);
3075         fio_options_free(&def_thread);
3076         filesetup_mem_free();
3077
3078         if (!thread_number) {
3079                 if (parse_dryrun())
3080                         return 0;
3081                 if (exec_profile)
3082                         return 0;
3083                 if (is_backend || nr_clients)
3084                         return 0;
3085                 if (did_arg)
3086                         return 0;
3087
3088                 log_err("No job(s) defined\n\n");
3089                 usage(argv[0]);
3090                 return 1;
3091         }
3092
3093         if (output_format & FIO_OUTPUT_NORMAL)
3094                 log_info("%s\n", fio_version_string);
3095
3096         return 0;
3097 }
3098
3099 void options_default_fill(struct thread_options *o)
3100 {
3101         memcpy(o, &def_thread.o, sizeof(*o));
3102 }
3103
3104 struct thread_data *get_global_options(void)
3105 {
3106         return &def_thread;
3107 }