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 int max_jobs = FIO_MAX_JOBS;
  49 static bool dump_cmdline;
  50 static bool parse_only;
  51 static bool merge_blktrace_only;
  52
  53 static struct thread_data def_thread;
  54 struct thread_data *threads = NULL;
  55 static char **job_sections;
  56 static int nr_job_sections;
  57
  58 bool exitall_on_terminate = false;
  59 int output_format = FIO_OUTPUT_NORMAL;
  60 int eta_print = FIO_ETA_AUTO;
  61 unsigned int eta_interval_msec = 1000;
  62 int eta_new_line = 0;
  63 FILE *f_out = NULL;
  64 FILE *f_err = NULL;
  65 char *exec_profile = NULL;
  66 int warnings_fatal = 0;
  67 int terse_version = 3;
  68 bool is_backend = false;
  69 bool is_local_backend = false;
  70 int nr_clients = 0;
  71 bool log_syslog = false;
  72
  73 bool write_bw_log = false;
  74 bool read_only = false;
  75 int status_interval = 0;
  76
  77 char *trigger_file = NULL;
  78 long long trigger_timeout = 0;
  79 char *trigger_cmd = NULL;
  80 char *trigger_remote_cmd = NULL;
  81
  82 char *aux_path = NULL;
  83
  84 static int prev_group_jobs;
  85
  86 unsigned long fio_debug = 0;
  87 unsigned int fio_debug_jobno = -1;
  88 unsigned int *fio_debug_jobp = NULL;
  89 unsigned int *fio_warned = NULL;
  90
  91 static char cmd_optstr[256];
  92 static bool did_arg;
  93
  94 #define FIO_CLIENT_FLAG         (1 << 16)
  95
  96 /*
  97  * Command line options. These will contain the above, plus a few
  98  * extra that only pertain to fio itself and not jobs.
  99  */
 100 static struct option l_opts[FIO_NR_OPTIONS] = {
 101         {
 102                 .name           = (char *) "output",
 103                 .has_arg        = required_argument,
 104                 .val            = 'o' | FIO_CLIENT_FLAG,
 105         },
 106         {
 107                 .name           = (char *) "latency-log",
 108                 .has_arg        = required_argument,
 109                 .val            = 'l' | FIO_CLIENT_FLAG,
 110         },
 111         {
 112                 .name           = (char *) "bandwidth-log",
 113                 .has_arg        = no_argument,
 114                 .val            = 'b' | FIO_CLIENT_FLAG,
 115         },
 116         {
 117                 .name           = (char *) "minimal",
 118                 .has_arg        = no_argument,
 119                 .val            = 'm' | FIO_CLIENT_FLAG,
 120         },
 121         {
 122                 .name           = (char *) "output-format",
 123                 .has_arg        = required_argument,
 124                 .val            = 'F' | FIO_CLIENT_FLAG,
 125         },
 126         {
 127                 .name           = (char *) "append-terse",
 128                 .has_arg        = optional_argument,
 129                 .val            = 'f',
 130         },
 131         {
 132                 .name           = (char *) "version",
 133                 .has_arg        = no_argument,
 134                 .val            = 'v' | FIO_CLIENT_FLAG,
 135         },
 136         {
 137                 .name           = (char *) "help",
 138                 .has_arg        = no_argument,
 139                 .val            = 'h' | FIO_CLIENT_FLAG,
 140         },
 141         {
 142                 .name           = (char *) "cmdhelp",
 143                 .has_arg        = optional_argument,
 144                 .val            = 'c' | FIO_CLIENT_FLAG,
 145         },
 146         {
 147                 .name           = (char *) "enghelp",
 148                 .has_arg        = optional_argument,
 149                 .val            = 'i' | FIO_CLIENT_FLAG,
 150         },
 151         {
 152                 .name           = (char *) "showcmd",
 153                 .has_arg        = no_argument,
 154                 .val            = 's' | FIO_CLIENT_FLAG,
 155         },
 156         {
 157                 .name           = (char *) "readonly",
 158                 .has_arg        = no_argument,
 159                 .val            = 'r' | FIO_CLIENT_FLAG,
 160         },
 161         {
 162                 .name           = (char *) "eta",
 163                 .has_arg        = required_argument,
 164                 .val            = 'e' | FIO_CLIENT_FLAG,
 165         },
 166         {
 167                 .name           = (char *) "eta-interval",
 168                 .has_arg        = required_argument,
 169                 .val            = 'O' | FIO_CLIENT_FLAG,
 170         },
 171         {
 172                 .name           = (char *) "eta-newline",
 173                 .has_arg        = required_argument,
 174                 .val            = 'E' | FIO_CLIENT_FLAG,
 175         },
 176         {
 177                 .name           = (char *) "debug",
 178                 .has_arg        = required_argument,
 179                 .val            = 'd' | FIO_CLIENT_FLAG,
 180         },
 181         {
 182                 .name           = (char *) "parse-only",
 183                 .has_arg        = no_argument,
 184                 .val            = 'P' | FIO_CLIENT_FLAG,
 185         },
 186         {
 187                 .name           = (char *) "section",
 188                 .has_arg        = required_argument,
 189                 .val            = 'x' | FIO_CLIENT_FLAG,
 190         },
 191 #ifdef CONFIG_ZLIB
 192         {
 193                 .name           = (char *) "inflate-log",
 194                 .has_arg        = required_argument,
 195                 .val            = 'X' | FIO_CLIENT_FLAG,
 196         },
 197 #endif
 198         {
 199                 .name           = (char *) "alloc-size",
 200                 .has_arg        = required_argument,
 201                 .val            = 'a' | FIO_CLIENT_FLAG,
 202         },
 203         {
 204                 .name           = (char *) "profile",
 205                 .has_arg        = required_argument,
 206                 .val            = 'p' | FIO_CLIENT_FLAG,
 207         },
 208         {
 209                 .name           = (char *) "warnings-fatal",
 210                 .has_arg        = no_argument,
 211                 .val            = 'w' | FIO_CLIENT_FLAG,
 212         },
 213         {
 214                 .name           = (char *) "max-jobs",
 215                 .has_arg        = required_argument,
 216                 .val            = 'j' | FIO_CLIENT_FLAG,
 217         },
 218         {
 219                 .name           = (char *) "terse-version",
 220                 .has_arg        = required_argument,
 221                 .val            = 'V' | FIO_CLIENT_FLAG,
 222         },
 223         {
 224                 .name           = (char *) "server",
 225                 .has_arg        = optional_argument,
 226                 .val            = 'S',
 227         },
 228         {       .name           = (char *) "daemonize",
 229                 .has_arg        = required_argument,
 230                 .val            = 'D',
 231         },
 232         {
 233                 .name           = (char *) "client",
 234                 .has_arg        = required_argument,
 235                 .val            = 'C',
 236         },
 237         {
 238                 .name           = (char *) "remote-config",
 239                 .has_arg        = required_argument,
 240                 .val            = 'R',
 241         },
 242         {
 243                 .name           = (char *) "cpuclock-test",
 244                 .has_arg        = no_argument,
 245                 .val            = 'T',
 246         },
 247         {
 248                 .name           = (char *) "crctest",
 249                 .has_arg        = optional_argument,
 250                 .val            = 'G',
 251         },
 252         {
 253                 .name           = (char *) "memcpytest",
 254                 .has_arg        = optional_argument,
 255                 .val            = 'M',
 256         },
 257         {
 258                 .name           = (char *) "idle-prof",
 259                 .has_arg        = required_argument,
 260                 .val            = 'I',
 261         },
 262         {
 263                 .name           = (char *) "status-interval",
 264                 .has_arg        = required_argument,
 265                 .val            = 'L' | FIO_CLIENT_FLAG,
 266         },
 267         {
 268                 .name           = (char *) "trigger-file",
 269                 .has_arg        = required_argument,
 270                 .val            = 'W',
 271         },
 272         {
 273                 .name           = (char *) "trigger-timeout",
 274                 .has_arg        = required_argument,
 275                 .val            = 'B',
 276         },
 277         {
 278                 .name           = (char *) "trigger",
 279                 .has_arg        = required_argument,
 280                 .val            = 'H',
 281         },
 282         {
 283                 .name           = (char *) "trigger-remote",
 284                 .has_arg        = required_argument,
 285                 .val            = 'J',
 286         },
 287         {
 288                 .name           = (char *) "aux-path",
 289                 .has_arg        = required_argument,
 290                 .val            = 'K',
 291         },
 292         {
 293                 .name           = (char *) "merge-blktrace-only",
 294                 .has_arg        = no_argument,
 295                 .val            = 'A' | FIO_CLIENT_FLAG,
 296         },
 297         {
 298                 .name           = NULL,
 299         },
 300 };
 301
 302 void free_threads_shm(void)
 303 {
 304         if (threads) {
 305                 void *tp = threads;
 306 #ifndef CONFIG_NO_SHM
 307                 struct shmid_ds sbuf;
 308
 309                 threads = NULL;
 310                 shmdt(tp);
 311                 shmctl(shm_id, IPC_RMID, &sbuf);
 312                 shm_id = -1;
 313 #else
 314                 threads = NULL;
 315                 free(tp);
 316 #endif
 317         }
 318 }
 319
 320 static void free_shm(void)
 321 {
 322         if (threads) {
 323                 flow_exit();
 324                 fio_debug_jobp = NULL;
 325                 fio_warned = NULL;
 326                 free_threads_shm();
 327         }
 328
 329         free(trigger_file);
 330         free(trigger_cmd);
 331         free(trigger_remote_cmd);
 332         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 333
 334         options_free(fio_options, &def_thread.o);
 335         fio_filelock_exit();
 336         file_hash_exit();
 337         scleanup();
 338 }
 339
 340 /*
 341  * The thread area is shared between the main process and the job
 342  * threads/processes. So setup a shared memory segment that will hold
 343  * all the job info. We use the end of the region for keeping track of
 344  * open files across jobs, for file sharing.
 345  */
 346 static int setup_thread_area(void)
 347 {
 348         int i;
 349
 350         if (threads)
 351                 return 0;
 352
 353         /*
 354          * 1024 is too much on some machines, scale max_jobs if
 355          * we get a failure that looks like too large a shm segment
 356          */
 357         do {
 358                 size_t size = max_jobs * sizeof(struct thread_data);
 359
 360                 size += 2 * sizeof(unsigned int);
 361
 362 #ifndef CONFIG_NO_SHM
 363                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 364                 if (shm_id != -1)
 365                         break;
 366                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 367                         perror("shmget");
 368                         break;
 369                 }
 370 #else
 371                 threads = malloc(size);
 372                 if (threads)
 373                         break;
 374 #endif
 375
 376                 max_jobs >>= 1;
 377         } while (max_jobs);
 378
 379 #ifndef CONFIG_NO_SHM
 380         if (shm_id == -1)
 381                 return 1;
 382
 383         threads = shmat(shm_id, NULL, 0);
 384         if (threads == (void *) -1) {
 385                 perror("shmat");
 386                 return 1;
 387         }
 388         if (shm_attach_to_open_removed())
 389                 shmctl(shm_id, IPC_RMID, NULL);
 390 #endif
 391
 392         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 393         for (i = 0; i < max_jobs; i++)
 394                 DRD_IGNORE_VAR(threads[i]);
 395         fio_debug_jobp = (unsigned int *)(threads + max_jobs);
 396         *fio_debug_jobp = -1;
 397         fio_warned = fio_debug_jobp + 1;
 398         *fio_warned = 0;
 399
 400         flow_init();
 401
 402         return 0;
 403 }
 404
 405 static void dump_print_option(struct print_option *p)
 406 {
 407         const char *delim;
 408
 409         if (!strcmp("description", p->name))
 410                 delim = "\"";
 411         else
 412                 delim = "";
 413
 414         log_info("--%s%s", p->name, p->value ? "" : " ");
 415         if (p->value)
 416                 log_info("=%s%s%s ", delim, p->value, delim);
 417 }
 418
 419 static void dump_opt_list(struct thread_data *td)
 420 {
 421         struct flist_head *entry;
 422         struct print_option *p;
 423
 424         if (flist_empty(&td->opt_list))
 425                 return;
 426
 427         flist_for_each(entry, &td->opt_list) {
 428                 p = flist_entry(entry, struct print_option, list);
 429                 dump_print_option(p);
 430         }
 431 }
 432
 433 static void fio_dump_options_free(struct thread_data *td)
 434 {
 435         while (!flist_empty(&td->opt_list)) {
 436                 struct print_option *p;
 437
 438                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 439                 flist_del_init(&p->list);
 440                 free(p->name);
 441                 free(p->value);
 442                 free(p);
 443         }
 444 }
 445
 446 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 447 {
 448         struct flist_head *entry;
 449
 450         if (flist_empty(&src->opt_list))
 451                 return;
 452
 453         flist_for_each(entry, &src->opt_list) {
 454                 struct print_option *srcp, *dstp;
 455
 456                 srcp = flist_entry(entry, struct print_option, list);
 457                 dstp = malloc(sizeof(*dstp));
 458                 dstp->name = strdup(srcp->name);
 459                 if (srcp->value)
 460                         dstp->value = strdup(srcp->value);
 461                 else
 462                         dstp->value = NULL;
 463                 flist_add_tail(&dstp->list, &dst->opt_list);
 464         }
 465 }
 466
 467 /*
 468  * Return a free job structure.
 469  */
 470 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 471                                        bool preserve_eo, const char *jobname)
 472 {
 473         struct thread_data *td;
 474
 475         if (global)
 476                 return &def_thread;
 477         if (setup_thread_area()) {
 478                 log_err("error: failed to setup shm segment\n");
 479                 return NULL;
 480         }
 481         if (thread_number >= max_jobs) {
 482                 log_err("error: maximum number of jobs (%d) reached.\n",
 483                                 max_jobs);
 484                 return NULL;
 485         }
 486
 487         td = &threads[thread_number++];
 488         *td = *parent;
 489
 490         INIT_FLIST_HEAD(&td->opt_list);
 491         if (parent != &def_thread)
 492                 copy_opt_list(td, parent);
 493
 494         td->io_ops = NULL;
 495         td->io_ops_init = 0;
 496         if (!preserve_eo)
 497                 td->eo = NULL;
 498
 499         td->o.uid = td->o.gid = -1U;
 500
 501         dup_files(td, parent);
 502         fio_options_mem_dupe(td);
 503
 504         profile_add_hooks(td);
 505
 506         td->thread_number = thread_number;
 507         td->subjob_number = 0;
 508
 509         if (jobname)
 510                 td->o.name = strdup(jobname);
 511
 512         if (!parent->o.group_reporting || parent == &def_thread)
 513                 stat_number++;
 514
 515         return td;
 516 }
 517
 518 static void put_job(struct thread_data *td)
 519 {
 520         if (td == &def_thread)
 521                 return;
 522
 523         profile_td_exit(td);
 524         flow_exit_job(td);
 525
 526         if (td->error)
 527                 log_info("fio: %s\n", td->verror);
 528
 529         fio_options_free(td);
 530         fio_dump_options_free(td);
 531         if (td->io_ops)
 532                 free_ioengine(td);
 533
 534         if (td->o.name)
 535                 free(td->o.name);
 536
 537         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 538         thread_number--;
 539 }
 540
 541 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 542 {
 543         unsigned long long bs = td->o.min_bs[ddir];
 544
 545         assert(ddir_rw(ddir));
 546
 547         if (td->o.rate[ddir])
 548                 td->rate_bps[ddir] = td->o.rate[ddir];
 549         else
 550                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 551
 552         if (!td->rate_bps[ddir]) {
 553                 log_err("rate lower than supported\n");
 554                 return -1;
 555         }
 556
 557         td->rate_next_io_time[ddir] = 0;
 558         td->rate_io_issue_bytes[ddir] = 0;
 559         td->last_usec[ddir] = 0;
 560         return 0;
 561 }
 562
 563 static int setup_rate(struct thread_data *td)
 564 {
 565         int ret = 0;
 566
 567         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 568                 ret = __setup_rate(td, DDIR_READ);
 569         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 570                 ret |= __setup_rate(td, DDIR_WRITE);
 571         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 572                 ret |= __setup_rate(td, DDIR_TRIM);
 573
 574         return ret;
 575 }
 576
 577 static int fixed_block_size(struct thread_options *o)
 578 {
 579         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 580                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 581                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 582                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 583                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 584 }
 585
 586 /*
 587  * <3 Johannes
 588  */
 589 static unsigned int gcd(unsigned int m, unsigned int n)
 590 {
 591         if (!n)
 592                 return m;
 593
 594         return gcd(n, m % n);
 595 }
 596
 597 /*
 598  * Lazy way of fixing up options that depend on each other. We could also
 599  * define option callback handlers, but this is easier.
 600  */
 601 static int fixup_options(struct thread_data *td)
 602 {
 603         struct thread_options *o = &td->o;
 604         int ret = 0;
 605
 606         if (read_only && (td_write(td) || td_trim(td))) {
 607                 log_err("fio: trim and write operations are not allowed"
 608                          " with the --readonly parameter.\n");
 609                 ret |= 1;
 610         }
 611
 612 #ifndef CONFIG_PSHARED
 613         if (!o->use_thread) {
 614                 log_info("fio: this platform does not support process shared"
 615                          " mutexes, forcing use of threads. Use the 'thread'"
 616                          " option to get rid of this warning.\n");
 617                 o->use_thread = 1;
 618                 ret |= warnings_fatal;
 619         }
 620 #endif
 621
 622         if (o->write_iolog_file && o->read_iolog_file) {
 623                 log_err("fio: read iolog overrides write_iolog\n");
 624                 free(o->write_iolog_file);
 625                 o->write_iolog_file = NULL;
 626                 ret |= warnings_fatal;
 627         }
 628
 629         if (o->zone_mode == ZONE_MODE_NONE && o->zone_size) {
 630                 log_err("fio: --zonemode=none and --zonesize are not compatible.\n");
 631                 ret |= 1;
 632         }
 633
 634         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_size) {
 635                 log_err("fio: --zonesize must be specified when using --zonemode=strided.\n");
 636                 ret |= 1;
 637         }
 638
 639         if (o->zone_mode == ZONE_MODE_NOT_SPECIFIED) {
 640                 if (o->zone_size)
 641                         o->zone_mode = ZONE_MODE_STRIDED;
 642                 else
 643                         o->zone_mode = ZONE_MODE_NONE;
 644         }
 645
 646         /*
 647          * Strided zone mode only really works with 1 file.
 648          */
 649         if (o->zone_mode == ZONE_MODE_STRIDED && o->open_files > 1)
 650                 o->zone_mode = ZONE_MODE_NONE;
 651
 652         /*
 653          * If zone_range isn't specified, backward compatibility dictates it
 654          * should be made equal to zone_size.
 655          */
 656         if (o->zone_mode == ZONE_MODE_STRIDED && !o->zone_range)
 657                 o->zone_range = o->zone_size;
 658
 659         /*
 660          * Reads can do overwrites, we always need to pre-create the file
 661          */
 662         if (td_read(td))
 663                 o->overwrite = 1;
 664
 665         if (!o->min_bs[DDIR_READ])
 666                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 667         if (!o->max_bs[DDIR_READ])
 668                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 669         if (!o->min_bs[DDIR_WRITE])
 670                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 671         if (!o->max_bs[DDIR_WRITE])
 672                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 673         if (!o->min_bs[DDIR_TRIM])
 674                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 675         if (!o->max_bs[DDIR_TRIM])
 676                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 677
 678         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 679         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 680
 681         /*
 682          * For random IO, allow blockalign offset other than min_bs.
 683          */
 684         if (!o->ba[DDIR_READ] || !td_random(td))
 685                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 686         if (!o->ba[DDIR_WRITE] || !td_random(td))
 687                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 688         if (!o->ba[DDIR_TRIM] || !td_random(td))
 689                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 690
 691         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 692             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 693             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 694             !o->norandommap) {
 695                 log_err("fio: Any use of blockalign= turns off randommap\n");
 696                 o->norandommap = 1;
 697                 ret |= warnings_fatal;
 698         }
 699
 700         if (!o->file_size_high)
 701                 o->file_size_high = o->file_size_low;
 702
 703         if (o->start_delay_high) {
 704                 if (!o->start_delay_orig)
 705                         o->start_delay_orig = o->start_delay;
 706                 o->start_delay = rand_between(&td->delay_state,
 707                                                 o->start_delay_orig,
 708                                                 o->start_delay_high);
 709         }
 710
 711         if (o->norandommap && o->verify != VERIFY_NONE
 712             && !fixed_block_size(o))  {
 713                 log_err("fio: norandommap given for variable block sizes, "
 714                         "verify limited\n");
 715                 ret |= warnings_fatal;
 716         }
 717         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 718                 log_err("fio: bs_unaligned may not work with raw io\n");
 719
 720         /*
 721          * thinktime_spin must be less than thinktime
 722          */
 723         if (o->thinktime_spin > o->thinktime)
 724                 o->thinktime_spin = o->thinktime;
 725
 726         /*
 727          * The low water mark cannot be bigger than the iodepth
 728          */
 729         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 730                 o->iodepth_low = o->iodepth;
 731
 732         /*
 733          * If batch number isn't set, default to the same as iodepth
 734          */
 735         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 736                 o->iodepth_batch = o->iodepth;
 737
 738         /*
 739          * If max batch complete number isn't set or set incorrectly,
 740          * default to the same as iodepth_batch_complete_min
 741          */
 742         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 743                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 744
 745         /*
 746          * There's no need to check for in-flight overlapping IOs if the job
 747          * isn't changing data or the maximum iodepth is guaranteed to be 1
 748          * when we are not in offload mode
 749          */
 750         if (o->serialize_overlap && !(td->flags & TD_F_READ_IOLOG) &&
 751             (!(td_write(td) || td_trim(td)) || o->iodepth == 1) &&
 752             o->io_submit_mode != IO_MODE_OFFLOAD)
 753                 o->serialize_overlap = 0;
 754
 755         if (o->nr_files > td->files_index)
 756                 o->nr_files = td->files_index;
 757
 758         if (o->open_files > o->nr_files || !o->open_files)
 759                 o->open_files = o->nr_files;
 760
 761         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 762             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 763             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 764             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 765                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 766                 ret |= 1;
 767         }
 768         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 769             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 770             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 771             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 772             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 773             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 774                 log_err("fio: minimum rate exceeds rate\n");
 775                 ret |= 1;
 776         }
 777
 778         if (!o->timeout && o->time_based) {
 779                 log_err("fio: time_based requires a runtime/timeout setting\n");
 780                 o->time_based = 0;
 781                 ret |= warnings_fatal;
 782         }
 783
 784         if (o->fill_device && !o->size)
 785                 o->size = -1ULL;
 786
 787         if (o->verify != VERIFY_NONE) {
 788                 if (td_write(td) && o->do_verify && o->numjobs > 1 &&
 789                     (o->filename ||
 790                      !(o->unique_filename &&
 791                        strstr(o->filename_format, "$jobname") &&
 792                        strstr(o->filename_format, "$jobnum") &&
 793                        strstr(o->filename_format, "$filenum")))) {
 794                         log_info("fio: multiple writers may overwrite blocks "
 795                                 "that belong to other jobs. This can cause "
 796                                 "verification failures.\n");
 797                         ret |= warnings_fatal;
 798                 }
 799
 800                 /*
 801                  * Warn if verification is requested but no verification of any
 802                  * kind can be started due to time constraints
 803                  */
 804                 if (td_write(td) && o->do_verify && o->timeout &&
 805                     o->time_based && !td_read(td) && !o->verify_backlog) {
 806                         log_info("fio: verification read phase will never "
 807                                  "start because write phase uses all of "
 808                                  "runtime\n");
 809                         ret |= warnings_fatal;
 810                 }
 811
 812                 if (!fio_option_is_set(o, refill_buffers))
 813                         o->refill_buffers = 1;
 814
 815                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 816                     !o->verify_interval)
 817                         o->verify_interval = o->min_bs[DDIR_WRITE];
 818
 819                 /*
 820                  * Verify interval must be smaller or equal to the
 821                  * write size.
 822                  */
 823                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 824                         o->verify_interval = o->min_bs[DDIR_WRITE];
 825                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 826                         o->verify_interval = o->min_bs[DDIR_READ];
 827
 828                 /*
 829                  * Verify interval must be a factor of both min and max
 830                  * write size
 831                  */
 832                 if (!o->verify_interval ||
 833                     (o->min_bs[DDIR_WRITE] % o->verify_interval) ||
 834                     (o->max_bs[DDIR_WRITE] % o->verify_interval))
 835                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 836                                                         o->max_bs[DDIR_WRITE]);
 837         }
 838
 839         if (o->pre_read) {
 840                 if (o->invalidate_cache)
 841                         o->invalidate_cache = 0;
 842                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 843                         log_info("fio: cannot pre-read files with an IO engine"
 844                                  " that isn't seekable. Pre-read disabled.\n");
 845                         ret |= warnings_fatal;
 846                 }
 847         }
 848
 849         if (o->unit_base == N2S_NONE) {
 850                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 851                         o->unit_base = N2S_BITPERSEC;
 852                 else
 853                         o->unit_base = N2S_BYTEPERSEC;
 854         }
 855
 856 #ifndef CONFIG_FDATASYNC
 857         if (o->fdatasync_blocks) {
 858                 log_info("fio: this platform does not support fdatasync()"
 859                          " falling back to using fsync().  Use the 'fsync'"
 860                          " option instead of 'fdatasync' to get rid of"
 861                          " this warning\n");
 862                 o->fsync_blocks = o->fdatasync_blocks;
 863                 o->fdatasync_blocks = 0;
 864                 ret |= warnings_fatal;
 865         }
 866 #endif
 867
 868 #ifdef WIN32
 869         /*
 870          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 871          * so fail if we're passed those flags
 872          */
 873         if (td_ioengine_flagged(td, FIO_SYNCIO) && (o->odirect || o->sync_io)) {
 874                 log_err("fio: Windows does not support direct or non-buffered io with"
 875                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 876                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 877                 ret |= 1;
 878         }
 879 #endif
 880
 881         /*
 882          * For fully compressible data, just zero them at init time.
 883          * It's faster than repeatedly filling it. For non-zero
 884          * compression, we should have refill_buffers set. Set it, unless
 885          * the job file already changed it.
 886          */
 887         if (o->compress_percentage) {
 888                 if (o->compress_percentage == 100) {
 889                         o->zero_buffers = 1;
 890                         o->compress_percentage = 0;
 891                 } else if (!fio_option_is_set(o, refill_buffers)) {
 892                         o->refill_buffers = 1;
 893                         td->flags |= TD_F_REFILL_BUFFERS;
 894                 }
 895         }
 896
 897         /*
 898          * Using a non-uniform random distribution excludes usage of
 899          * a random map
 900          */
 901         if (o->random_distribution != FIO_RAND_DIST_RANDOM)
 902                 o->norandommap = 1;
 903
 904         /*
 905          * If size is set but less than the min block size, complain
 906          */
 907         if (o->size && o->size < td_min_bs(td)) {
 908                 log_err("fio: size too small, must not be less than minimum block size: %llu < %llu\n",
 909                         (unsigned long long) o->size, td_min_bs(td));
 910                 ret |= 1;
 911         }
 912
 913         /*
 914          * O_ATOMIC implies O_DIRECT
 915          */
 916         if (o->oatomic)
 917                 o->odirect = 1;
 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 (fio_option_is_set(o, clat_percentiles) &&
 948             !fio_option_is_set(o, lat_percentiles)) {
 949                 o->lat_percentiles = !o->clat_percentiles;
 950         } else if (fio_option_is_set(o, lat_percentiles) &&
 951                    !fio_option_is_set(o, clat_percentiles)) {
 952                 o->clat_percentiles = !o->lat_percentiles;
 953         } else if (fio_option_is_set(o, lat_percentiles) &&
 954                    fio_option_is_set(o, clat_percentiles) &&
 955                    o->lat_percentiles && o->clat_percentiles) {
 956                 log_err("fio: lat_percentiles and clat_percentiles are "
 957                         "mutually exclusive\n");
 958                 ret |= 1;
 959         }
 960
 961         if (o->disable_lat)
 962                 o->lat_percentiles = 0;
 963         if (o->disable_clat)
 964                 o->clat_percentiles = 0;
 965
 966         /*
 967          * Fix these up to be nsec internally
 968          */
 969         o->max_latency *= 1000ULL;
 970         o->latency_target *= 1000ULL;
 971         o->latency_window *= 1000ULL;
 972
 973         return ret;
 974 }
 975
 976 static void init_rand_file_service(struct thread_data *td)
 977 {
 978         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 979         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 980
 981         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 982                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 983                 zipf_disable_hash(&td->next_file_zipf);
 984         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 985                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 986                 zipf_disable_hash(&td->next_file_zipf);
 987         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 988                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 989                 gauss_disable_hash(&td->next_file_gauss);
 990         }
 991 }
 992
 993 void td_fill_verify_state_seed(struct thread_data *td)
 994 {
 995         bool use64;
 996
 997         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 998                 use64 = true;
 999         else
1000                 use64 = false;
1001
1002         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
1003                 use64);
1004 }
1005
1006 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
1007 {
1008         unsigned int read_seed = td->rand_seeds[FIO_RAND_BS_OFF];
1009         unsigned int write_seed = td->rand_seeds[FIO_RAND_BS1_OFF];
1010         unsigned int trim_seed = td->rand_seeds[FIO_RAND_BS2_OFF];
1011         int i;
1012
1013         /*
1014          * trimwrite is special in that we need to generate the same
1015          * offsets to get the "write after trim" effect. If we are
1016          * using bssplit to set buffer length distributions, ensure that
1017          * we seed the trim and write generators identically. Ditto for
1018          * verify, read and writes must have the same seed, if we are doing
1019          * read verify.
1020          */
1021         if (td->o.verify != VERIFY_NONE)
1022                 write_seed = read_seed;
1023         if (td_trimwrite(td))
1024                 trim_seed = write_seed;
1025         init_rand_seed(&td->bsrange_state[DDIR_READ], read_seed, use64);
1026         init_rand_seed(&td->bsrange_state[DDIR_WRITE], write_seed, use64);
1027         init_rand_seed(&td->bsrange_state[DDIR_TRIM], trim_seed, use64);
1028
1029         td_fill_verify_state_seed(td);
1030         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
1031
1032         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
1033                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
1034         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
1035                 init_rand_file_service(td);
1036
1037         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
1038         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
1039         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
1040         init_rand_seed(&td->poisson_state[0], td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
1041         init_rand_seed(&td->poisson_state[1], td->rand_seeds[FIO_RAND_POISSON2_OFF], 0);
1042         init_rand_seed(&td->poisson_state[2], td->rand_seeds[FIO_RAND_POISSON3_OFF], 0);
1043         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
1044         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
1045
1046         if (!td_random(td))
1047                 return;
1048
1049         if (td->o.rand_repeatable)
1050                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
1051
1052         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
1053
1054         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1055                 struct frand_state *s = &td->seq_rand_state[i];
1056
1057                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
1058         }
1059 }
1060
1061 void td_fill_rand_seeds(struct thread_data *td)
1062 {
1063         bool use64;
1064
1065         if (td->o.allrand_repeatable) {
1066                 unsigned int i;
1067
1068                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
1069                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
1070                                 + i;
1071         }
1072
1073         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
1074                 use64 = true;
1075         else
1076                 use64 = false;
1077
1078         td_fill_rand_seeds_internal(td, use64);
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 /*
1085  * Initializes the ioengine configured for a job, if it has not been done so
1086  * already.
1087  */
1088 int ioengine_load(struct thread_data *td)
1089 {
1090         if (!td->o.ioengine) {
1091                 log_err("fio: internal fault, no IO engine specified\n");
1092                 return 1;
1093         }
1094
1095         if (td->io_ops) {
1096                 struct ioengine_ops *ops;
1097                 void *dlhandle;
1098
1099                 /* An engine is loaded, but the requested ioengine
1100                  * may have changed.
1101                  */
1102                 if (!strcmp(td->io_ops->name, td->o.ioengine)) {
1103                         /* The right engine is already loaded */
1104                         return 0;
1105                 }
1106
1107                 /*
1108                  * Name of file and engine may be different, load ops
1109                  * for this name and see if they match. If they do, then
1110                  * the engine is unchanged.
1111                  */
1112                 dlhandle = td->io_ops_dlhandle;
1113                 ops = load_ioengine(td);
1114                 if (ops == td->io_ops && dlhandle == td->io_ops_dlhandle) {
1115                         if (dlhandle)
1116                                 dlclose(dlhandle);
1117                         return 0;
1118                 }
1119
1120                 if (dlhandle && dlhandle != td->io_ops_dlhandle)
1121                         dlclose(dlhandle);
1122
1123                 /* Unload the old engine. */
1124                 free_ioengine(td);
1125         }
1126
1127         td->io_ops = load_ioengine(td);
1128         if (!td->io_ops) {
1129                 log_err("fio: failed to load engine\n");
1130                 return 1;
1131         }
1132
1133         if (td->io_ops->option_struct_size && td->io_ops->options) {
1134                 /*
1135                  * In cases where td->eo is set, clone it for a child thread.
1136                  * This requires that the parent thread has the same ioengine,
1137                  * but that requirement must be enforced by the code which
1138                  * cloned the thread.
1139                  */
1140                 void *origeo = td->eo;
1141                 /*
1142                  * Otherwise use the default thread options.
1143                  */
1144                 if (!origeo && td != &def_thread && def_thread.eo &&
1145                     def_thread.io_ops->options == td->io_ops->options)
1146                         origeo = def_thread.eo;
1147
1148                 options_init(td->io_ops->options);
1149                 td->eo = malloc(td->io_ops->option_struct_size);
1150                 /*
1151                  * Use the default thread as an option template if this uses the
1152                  * same options structure and there are non-default options
1153                  * used.
1154                  */
1155                 if (origeo) {
1156                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1157                         options_mem_dupe(td->io_ops->options, td->eo);
1158                 } else {
1159                         memset(td->eo, 0, td->io_ops->option_struct_size);
1160                         fill_default_options(td->eo, td->io_ops->options);
1161                 }
1162                 *(struct thread_data **)td->eo = td;
1163         }
1164
1165         if (td->o.odirect)
1166                 td->io_ops->flags |= FIO_RAWIO;
1167
1168         td_set_ioengine_flags(td);
1169         return 0;
1170 }
1171
1172 static void init_flags(struct thread_data *td)
1173 {
1174         struct thread_options *o = &td->o;
1175         int i;
1176
1177         if (o->verify_backlog)
1178                 td->flags |= TD_F_VER_BACKLOG;
1179         if (o->trim_backlog)
1180                 td->flags |= TD_F_TRIM_BACKLOG;
1181         if (o->read_iolog_file)
1182                 td->flags |= TD_F_READ_IOLOG;
1183         if (o->refill_buffers)
1184                 td->flags |= TD_F_REFILL_BUFFERS;
1185         /*
1186          * Always scramble buffers if asked to
1187          */
1188         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1189                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1190         /*
1191          * But also scramble buffers, unless we were explicitly asked
1192          * to zero them.
1193          */
1194         if (o->scramble_buffers && !(o->zero_buffers &&
1195             fio_option_is_set(o, zero_buffers)))
1196                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1197         if (o->verify != VERIFY_NONE)
1198                 td->flags |= TD_F_DO_VERIFY;
1199
1200         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1201                 td->flags |= TD_F_NEED_LOCK;
1202
1203         if (o->mem_type == MEM_CUDA_MALLOC)
1204                 td->flags &= ~TD_F_SCRAMBLE_BUFFERS;
1205
1206         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1207                 if (option_check_rate(td, i)) {
1208                         td->flags |= TD_F_CHECK_RATE;
1209                         break;
1210                 }
1211         }
1212 }
1213
1214 static int setup_random_seeds(struct thread_data *td)
1215 {
1216         uint64_t seed;
1217         unsigned int i;
1218
1219         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed)) {
1220                 int ret = init_random_seeds(td->rand_seeds, sizeof(td->rand_seeds));
1221                 if (!ret)
1222                         td_fill_rand_seeds(td);
1223                 return ret;
1224         }
1225
1226         seed = td->o.rand_seed;
1227         for (i = 0; i < 4; i++)
1228                 seed *= 0x9e370001UL;
1229
1230         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1231                 td->rand_seeds[i] = seed * td->thread_number + i;
1232                 seed *= 0x9e370001UL;
1233         }
1234
1235         td_fill_rand_seeds(td);
1236         return 0;
1237 }
1238
1239 enum {
1240         FPRE_NONE = 0,
1241         FPRE_JOBNAME,
1242         FPRE_JOBNUM,
1243         FPRE_FILENUM
1244 };
1245
1246 static struct fpre_keyword {
1247         const char *keyword;
1248         size_t strlen;
1249         int key;
1250 } fpre_keywords[] = {
1251         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1252         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1253         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1254         { .keyword = NULL, },
1255         };
1256
1257 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1258                            const char *jobname, int jobnum, int filenum)
1259 {
1260         struct fpre_keyword *f;
1261         char copy[PATH_MAX];
1262         size_t dst_left = PATH_MAX - 1;
1263
1264         if (!o->filename_format || !strlen(o->filename_format)) {
1265                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1266                 return buf;
1267         }
1268
1269         for (f = &fpre_keywords[0]; f->keyword; f++)
1270                 f->strlen = strlen(f->keyword);
1271
1272         snprintf(buf, buf_size, "%s", o->filename_format);
1273
1274         memset(copy, 0, sizeof(copy));
1275         for (f = &fpre_keywords[0]; f->keyword; f++) {
1276                 do {
1277                         size_t pre_len, post_start = 0;
1278                         char *str, *dst = copy;
1279
1280                         str = strcasestr(buf, f->keyword);
1281                         if (!str)
1282                                 break;
1283
1284                         pre_len = str - buf;
1285                         if (strlen(str) != f->strlen)
1286                                 post_start = pre_len + f->strlen;
1287
1288                         if (pre_len) {
1289                                 strncpy(dst, buf, pre_len);
1290                                 dst += pre_len;
1291                                 dst_left -= pre_len;
1292                         }
1293
1294                         switch (f->key) {
1295                         case FPRE_JOBNAME: {
1296                                 int ret;
1297
1298                                 ret = snprintf(dst, dst_left, "%s", jobname);
1299                                 if (ret < 0)
1300                                         break;
1301                                 else if (ret > dst_left) {
1302                                         log_err("fio: truncated filename\n");
1303                                         dst += dst_left;
1304                                         dst_left = 0;
1305                                 } else {
1306                                         dst += ret;
1307                                         dst_left -= ret;
1308                                 }
1309                                 break;
1310                                 }
1311                         case FPRE_JOBNUM: {
1312                                 int ret;
1313
1314                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1315                                 if (ret < 0)
1316                                         break;
1317                                 else if (ret > dst_left) {
1318                                         log_err("fio: truncated filename\n");
1319                                         dst += dst_left;
1320                                         dst_left = 0;
1321                                 } else {
1322                                         dst += ret;
1323                                         dst_left -= ret;
1324                                 }
1325                                 break;
1326                                 }
1327                         case FPRE_FILENUM: {
1328                                 int ret;
1329
1330                                 ret = snprintf(dst, dst_left, "%d", filenum);
1331                                 if (ret < 0)
1332                                         break;
1333                                 else if (ret > dst_left) {
1334                                         log_err("fio: truncated filename\n");
1335                                         dst += dst_left;
1336                                         dst_left = 0;
1337                                 } else {
1338                                         dst += ret;
1339                                         dst_left -= ret;
1340                                 }
1341                                 break;
1342                                 }
1343                         default:
1344                                 assert(0);
1345                                 break;
1346                         }
1347
1348                         if (post_start)
1349                                 strncpy(dst, buf + post_start, dst_left);
1350
1351                         snprintf(buf, buf_size, "%s", copy);
1352                 } while (1);
1353         }
1354
1355         return buf;
1356 }
1357
1358 bool parse_dryrun(void)
1359 {
1360         return dump_cmdline || parse_only;
1361 }
1362
1363 static void gen_log_name(char *name, size_t size, const char *logtype,
1364                          const char *logname, unsigned int num,
1365                          const char *suf, int per_job)
1366 {
1367         if (per_job)
1368                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1369         else
1370                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1371 }
1372
1373 static int check_waitees(char *waitee)
1374 {
1375         struct thread_data *td;
1376         int i, ret = 0;
1377
1378         for_each_td(td, i) {
1379                 if (td->subjob_number)
1380                         continue;
1381
1382                 ret += !strcmp(td->o.name, waitee);
1383         }
1384
1385         return ret;
1386 }
1387
1388 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1389 {
1390         int nw;
1391
1392         if (!o->wait_for)
1393                 return true;
1394
1395         if (!strcmp(jobname, o->wait_for)) {
1396                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1397                                 jobname, o->wait_for);
1398                 return false;
1399         }
1400
1401         if (!(nw = check_waitees(o->wait_for))) {
1402                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1403                 return false;
1404         }
1405
1406         if (nw > 1) {
1407                 log_err("%s: multiple waitees %s found,\n"
1408                         "please avoid duplicates when using wait_for option.\n",
1409                                 jobname, o->wait_for);
1410                 return false;
1411         }
1412
1413         return true;
1414 }
1415
1416 /*
1417  * Treat an empty log file name the same as a one not given
1418  */
1419 static const char *make_log_name(const char *logname, const char *jobname)
1420 {
1421         if (logname && strcmp(logname, ""))
1422                 return logname;
1423
1424         return jobname;
1425 }
1426
1427 /*
1428  * Adds a job to the list of things todo. Sanitizes the various options
1429  * to make sure we don't have conflicts, and initializes various
1430  * members of td.
1431  */
1432 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1433                    int recursed, int client_type)
1434 {
1435         unsigned int i;
1436         char fname[PATH_MAX + 1];
1437         int numjobs, file_alloced;
1438         struct thread_options *o = &td->o;
1439         char logname[PATH_MAX + 32];
1440
1441         /*
1442          * the def_thread is just for options, it's not a real job
1443          */
1444         if (td == &def_thread)
1445                 return 0;
1446
1447         init_flags(td);
1448
1449         /*
1450          * if we are just dumping the output command line, don't add the job
1451          */
1452         if (parse_dryrun()) {
1453                 put_job(td);
1454                 return 0;
1455         }
1456
1457         td->client_type = client_type;
1458
1459         if (profile_td_init(td))
1460                 goto err;
1461
1462         if (ioengine_load(td))
1463                 goto err;
1464
1465         file_alloced = 0;
1466         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1467                 file_alloced = 1;
1468
1469                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1470                         add_file(td, jobname, job_add_num, 0);
1471                 else {
1472                         for (i = 0; i < o->nr_files; i++)
1473                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1474                 }
1475         }
1476
1477         if (setup_random_seeds(td)) {
1478                 td_verror(td, errno, "setup_random_seeds");
1479                 goto err;
1480         }
1481
1482         if (fixup_options(td))
1483                 goto err;
1484
1485         /*
1486          * Belongs to fixup_options, but o->name is not necessarily set as yet
1487          */
1488         if (!wait_for_ok(jobname, o))
1489                 goto err;
1490
1491         flow_init_job(td);
1492
1493         /*
1494          * IO engines only need this for option callbacks, and the address may
1495          * change in subprocesses.
1496          */
1497         if (td->eo)
1498                 *(struct thread_data **)td->eo = NULL;
1499
1500         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1501                 struct fio_file *f;
1502
1503                 for_each_file(td, f, i)
1504                         f->real_file_size = -1ULL;
1505         }
1506
1507         td->sem = fio_sem_init(FIO_SEM_LOCKED);
1508
1509         td->ts.clat_percentiles = o->clat_percentiles;
1510         td->ts.lat_percentiles = o->lat_percentiles;
1511         td->ts.percentile_precision = o->percentile_precision;
1512         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1513         td->ts.sig_figs = o->sig_figs;
1514
1515         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1516                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1517                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1518                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1519                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1520                 td->ts.iops_stat[i].min_val = ULONG_MAX;
1521         }
1522         td->ts.sync_stat.min_val = ULONG_MAX;
1523         td->ddir_seq_nr = o->ddir_seq_nr;
1524
1525         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1526                 prev_group_jobs = 0;
1527                 groupid++;
1528                 if (groupid == INT_MAX) {
1529                         log_err("fio: too many groups defined\n");
1530                         goto err;
1531                 }
1532         }
1533
1534         td->groupid = groupid;
1535         prev_group_jobs++;
1536
1537         if (setup_rate(td))
1538                 goto err;
1539
1540         if (o->write_lat_log) {
1541                 struct log_params p = {
1542                         .td = td,
1543                         .avg_msec = o->log_avg_msec,
1544                         .hist_msec = o->log_hist_msec,
1545                         .hist_coarseness = o->log_hist_coarseness,
1546                         .log_type = IO_LOG_TYPE_LAT,
1547                         .log_offset = o->log_offset,
1548                         .log_gz = o->log_gz,
1549                         .log_gz_store = o->log_gz_store,
1550                 };
1551                 const char *pre = make_log_name(o->lat_log_file, o->name);
1552                 const char *suf;
1553
1554                 if (p.log_gz_store)
1555                         suf = "log.fz";
1556                 else
1557                         suf = "log";
1558
1559                 gen_log_name(logname, sizeof(logname), "lat", pre,
1560                                 td->thread_number, suf, o->per_job_logs);
1561                 setup_log(&td->lat_log, &p, logname);
1562
1563                 gen_log_name(logname, sizeof(logname), "slat", pre,
1564                                 td->thread_number, suf, o->per_job_logs);
1565                 setup_log(&td->slat_log, &p, logname);
1566
1567                 gen_log_name(logname, sizeof(logname), "clat", pre,
1568                                 td->thread_number, suf, o->per_job_logs);
1569                 setup_log(&td->clat_log, &p, logname);
1570
1571         }
1572
1573         if (o->write_hist_log) {
1574                 struct log_params p = {
1575                         .td = td,
1576                         .avg_msec = o->log_avg_msec,
1577                         .hist_msec = o->log_hist_msec,
1578                         .hist_coarseness = o->log_hist_coarseness,
1579                         .log_type = IO_LOG_TYPE_HIST,
1580                         .log_offset = o->log_offset,
1581                         .log_gz = o->log_gz,
1582                         .log_gz_store = o->log_gz_store,
1583                 };
1584                 const char *pre = make_log_name(o->hist_log_file, o->name);
1585                 const char *suf;
1586
1587 #ifndef CONFIG_ZLIB
1588                 if (td->client_type) {
1589                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1590                         goto err;
1591                 }
1592 #endif
1593
1594                 if (p.log_gz_store)
1595                         suf = "log.fz";
1596                 else
1597                         suf = "log";
1598
1599                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1600                                 td->thread_number, suf, o->per_job_logs);
1601                 setup_log(&td->clat_hist_log, &p, logname);
1602         }
1603
1604         if (o->write_bw_log) {
1605                 struct log_params p = {
1606                         .td = td,
1607                         .avg_msec = o->log_avg_msec,
1608                         .hist_msec = o->log_hist_msec,
1609                         .hist_coarseness = o->log_hist_coarseness,
1610                         .log_type = IO_LOG_TYPE_BW,
1611                         .log_offset = o->log_offset,
1612                         .log_gz = o->log_gz,
1613                         .log_gz_store = o->log_gz_store,
1614                 };
1615                 const char *pre = make_log_name(o->bw_log_file, o->name);
1616                 const char *suf;
1617
1618                 if (fio_option_is_set(o, bw_avg_time))
1619                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1620                 else
1621                         o->bw_avg_time = p.avg_msec;
1622
1623                 p.hist_msec = o->log_hist_msec;
1624                 p.hist_coarseness = o->log_hist_coarseness;
1625
1626                 if (p.log_gz_store)
1627                         suf = "log.fz";
1628                 else
1629                         suf = "log";
1630
1631                 gen_log_name(logname, sizeof(logname), "bw", pre,
1632                                 td->thread_number, suf, o->per_job_logs);
1633                 setup_log(&td->bw_log, &p, logname);
1634         }
1635         if (o->write_iops_log) {
1636                 struct log_params p = {
1637                         .td = td,
1638                         .avg_msec = o->log_avg_msec,
1639                         .hist_msec = o->log_hist_msec,
1640                         .hist_coarseness = o->log_hist_coarseness,
1641                         .log_type = IO_LOG_TYPE_IOPS,
1642                         .log_offset = o->log_offset,
1643                         .log_gz = o->log_gz,
1644                         .log_gz_store = o->log_gz_store,
1645                 };
1646                 const char *pre = make_log_name(o->iops_log_file, o->name);
1647                 const char *suf;
1648
1649                 if (fio_option_is_set(o, iops_avg_time))
1650                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1651                 else
1652                         o->iops_avg_time = p.avg_msec;
1653
1654                 p.hist_msec = o->log_hist_msec;
1655                 p.hist_coarseness = o->log_hist_coarseness;
1656
1657                 if (p.log_gz_store)
1658                         suf = "log.fz";
1659                 else
1660                         suf = "log";
1661
1662                 gen_log_name(logname, sizeof(logname), "iops", pre,
1663                                 td->thread_number, suf, o->per_job_logs);
1664                 setup_log(&td->iops_log, &p, logname);
1665         }
1666
1667         if (!o->name)
1668                 o->name = strdup(jobname);
1669
1670         if (output_format & FIO_OUTPUT_NORMAL) {
1671                 if (!job_add_num) {
1672                         if (is_backend && !recursed)
1673                                 fio_server_send_add_job(td);
1674
1675                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1676                                 char *c1, *c2, *c3, *c4;
1677                                 char *c5 = NULL, *c6 = NULL;
1678                                 int i2p = is_power_of_2(o->kb_base);
1679                                 struct buf_output out;
1680
1681                                 c1 = num2str(o->min_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1682                                 c2 = num2str(o->max_bs[DDIR_READ], o->sig_figs, 1, i2p, N2S_BYTE);
1683                                 c3 = num2str(o->min_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1684                                 c4 = num2str(o->max_bs[DDIR_WRITE], o->sig_figs, 1, i2p, N2S_BYTE);
1685
1686                                 if (!o->bs_is_seq_rand) {
1687                                         c5 = num2str(o->min_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1688                                         c6 = num2str(o->max_bs[DDIR_TRIM], o->sig_figs, 1, i2p, N2S_BYTE);
1689                                 }
1690
1691                                 buf_output_init(&out);
1692                                 __log_buf(&out, "%s: (g=%d): rw=%s, ", td->o.name,
1693                                                         td->groupid,
1694                                                         ddir_str(o->td_ddir));
1695
1696                                 if (o->bs_is_seq_rand)
1697                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1698                                                         c1, c2, c3, c4);
1699                                 else
1700                                         __log_buf(&out, "bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1701                                                         c1, c2, c3, c4, c5, c6);
1702
1703                                 __log_buf(&out, "ioengine=%s, iodepth=%u\n",
1704                                                 td->io_ops->name, o->iodepth);
1705                                 log_info_buf(out.buf, out.buflen);
1706                                 buf_output_free(&out);
1707
1708                                 free(c1);
1709                                 free(c2);
1710                                 free(c3);
1711                                 free(c4);
1712                                 free(c5);
1713                                 free(c6);
1714                         }
1715                 } else if (job_add_num == 1)
1716                         log_info("...\n");
1717         }
1718
1719         if (td_steadystate_init(td))
1720                 goto err;
1721
1722         if (o->merge_blktrace_file && !merge_blktrace_iologs(td))
1723                 goto err;
1724
1725         if (merge_blktrace_only) {
1726                 put_job(td);
1727                 return 0;
1728         }
1729
1730         /*
1731          * recurse add identical jobs, clear numjobs and stonewall options
1732          * as they don't apply to sub-jobs
1733          */
1734         numjobs = o->numjobs;
1735         while (--numjobs) {
1736                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1737
1738                 if (!td_new)
1739                         goto err;
1740
1741                 td_new->o.numjobs = 1;
1742                 td_new->o.stonewall = 0;
1743                 td_new->o.new_group = 0;
1744                 td_new->subjob_number = numjobs;
1745                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1746                 td_new->o.ss_limit = o->ss_limit;
1747
1748                 if (file_alloced) {
1749                         if (td_new->files) {
1750                                 struct fio_file *f;
1751                                 for_each_file(td_new, f, i) {
1752                                         if (f->file_name)
1753                                                 sfree(f->file_name);
1754                                         sfree(f);
1755                                 }
1756                                 free(td_new->files);
1757                                 td_new->files = NULL;
1758                         }
1759                         td_new->files_index = 0;
1760                         td_new->files_size = 0;
1761                         if (td_new->o.filename) {
1762                                 free(td_new->o.filename);
1763                                 td_new->o.filename = NULL;
1764                         }
1765                 }
1766
1767                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1768                         goto err;
1769         }
1770
1771         return 0;
1772 err:
1773         put_job(td);
1774         return -1;
1775 }
1776
1777 /*
1778  * Parse as if 'o' was a command line
1779  */
1780 void add_job_opts(const char **o, int client_type)
1781 {
1782         struct thread_data *td, *td_parent;
1783         int i, in_global = 1;
1784         char jobname[32];
1785
1786         i = 0;
1787         td_parent = td = NULL;
1788         while (o[i]) {
1789                 if (!strncmp(o[i], "name", 4)) {
1790                         in_global = 0;
1791                         if (td)
1792                                 add_job(td, jobname, 0, 0, client_type);
1793                         td = NULL;
1794                         sprintf(jobname, "%s", o[i] + 5);
1795                 }
1796                 if (in_global && !td_parent)
1797                         td_parent = get_new_job(true, &def_thread, false, jobname);
1798                 else if (!in_global && !td) {
1799                         if (!td_parent)
1800                                 td_parent = &def_thread;
1801                         td = get_new_job(false, td_parent, false, jobname);
1802                 }
1803                 if (in_global)
1804                         fio_options_parse(td_parent, (char **) &o[i], 1);
1805                 else
1806                         fio_options_parse(td, (char **) &o[i], 1);
1807                 i++;
1808         }
1809
1810         if (td)
1811                 add_job(td, jobname, 0, 0, client_type);
1812 }
1813
1814 static int skip_this_section(const char *name)
1815 {
1816         int i;
1817
1818         if (!nr_job_sections)
1819                 return 0;
1820         if (!strncmp(name, "global", 6))
1821                 return 0;
1822
1823         for (i = 0; i < nr_job_sections; i++)
1824                 if (!strcmp(job_sections[i], name))
1825                         return 0;
1826
1827         return 1;
1828 }
1829
1830 static int is_empty_or_comment(char *line)
1831 {
1832         unsigned int i;
1833
1834         for (i = 0; i < strlen(line); i++) {
1835                 if (line[i] == ';')
1836                         return 1;
1837                 if (line[i] == '#')
1838                         return 1;
1839                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1840                         return 0;
1841         }
1842
1843         return 1;
1844 }
1845
1846 /*
1847  * This is our [ini] type file parser.
1848  */
1849 static int __parse_jobs_ini(struct thread_data *td,
1850                 char *file, int is_buf, int stonewall_flag, int type,
1851                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1852 {
1853         bool global = false;
1854         char *string;
1855         FILE *f;
1856         char *p;
1857         int ret = 0, stonewall;
1858         int first_sect = 1;
1859         int skip_fgets = 0;
1860         int inside_skip = 0;
1861         char **opts;
1862         int i, alloc_opts, num_opts;
1863
1864         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1865         assert(td || !nested);
1866
1867         if (is_buf)
1868                 f = NULL;
1869         else {
1870                 if (!strcmp(file, "-"))
1871                         f = stdin;
1872                 else
1873                         f = fopen(file, "r");
1874
1875                 if (!f) {
1876                         int __err = errno;
1877
1878                         log_err("fio: unable to open '%s' job file\n", file);
1879                         if (td)
1880                                 td_verror(td, __err, "job file open");
1881                         return 1;
1882                 }
1883         }
1884
1885         string = malloc(OPT_LEN_MAX);
1886
1887         /*
1888          * it's really 256 + small bit, 280 should suffice
1889          */
1890         if (!nested) {
1891                 name = malloc(280);
1892                 memset(name, 0, 280);
1893         }
1894
1895         opts = NULL;
1896         if (nested && popts) {
1897                 opts = *popts;
1898                 alloc_opts = *aopts;
1899                 num_opts = *nopts;
1900         }
1901
1902         if (!opts) {
1903                 alloc_opts = 8;
1904                 opts = malloc(sizeof(char *) * alloc_opts);
1905                 num_opts = 0;
1906         }
1907
1908         stonewall = stonewall_flag;
1909         do {
1910                 /*
1911                  * if skip_fgets is set, we already have loaded a line we
1912                  * haven't handled.
1913                  */
1914                 if (!skip_fgets) {
1915                         if (is_buf)
1916                                 p = strsep(&file, "\n");
1917                         else
1918                                 p = fgets(string, OPT_LEN_MAX, f);
1919                         if (!p)
1920                                 break;
1921                 }
1922
1923                 skip_fgets = 0;
1924                 strip_blank_front(&p);
1925                 strip_blank_end(p);
1926
1927                 dprint(FD_PARSE, "%s\n", p);
1928                 if (is_empty_or_comment(p))
1929                         continue;
1930
1931                 if (!nested) {
1932                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1933                                 if (inside_skip)
1934                                         continue;
1935
1936                                 log_err("fio: option <%s> outside of "
1937                                         "[] job section\n", p);
1938                                 ret = 1;
1939                                 break;
1940                         }
1941
1942                         name[strlen(name) - 1] = '\0';
1943
1944                         if (skip_this_section(name)) {
1945                                 inside_skip = 1;
1946                                 continue;
1947                         } else
1948                                 inside_skip = 0;
1949
1950                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1951
1952                         global = !strncmp(name, "global", 6);
1953
1954                         if (dump_cmdline) {
1955                                 if (first_sect)
1956                                         log_info("fio ");
1957                                 if (!global)
1958                                         log_info("--name=%s ", name);
1959                                 first_sect = 0;
1960                         }
1961
1962                         td = get_new_job(global, &def_thread, false, name);
1963                         if (!td) {
1964                                 ret = 1;
1965                                 break;
1966                         }
1967
1968                         /*
1969                          * Separate multiple job files by a stonewall
1970                          */
1971                         if (!global && stonewall) {
1972                                 td->o.stonewall = stonewall;
1973                                 stonewall = 0;
1974                         }
1975
1976                         num_opts = 0;
1977                         memset(opts, 0, alloc_opts * sizeof(char *));
1978                 }
1979                 else
1980                         skip_fgets = 1;
1981
1982                 while (1) {
1983                         if (!skip_fgets) {
1984                                 if (is_buf)
1985                                         p = strsep(&file, "\n");
1986                                 else
1987                                         p = fgets(string, OPT_LEN_MAX, f);
1988                                 if (!p)
1989                                         break;
1990                                 dprint(FD_PARSE, "%s", p);
1991                         }
1992                         else
1993                                 skip_fgets = 0;
1994
1995                         if (is_empty_or_comment(p))
1996                                 continue;
1997
1998                         strip_blank_front(&p);
1999
2000                         /*
2001                          * new section, break out and make sure we don't
2002                          * fgets() a new line at the top.
2003                          */
2004                         if (p[0] == '[') {
2005                                 if (nested) {
2006                                         log_err("No new sections in included files\n");
2007                                         ret = 1;
2008                                         goto out;
2009                                 }
2010
2011                                 skip_fgets = 1;
2012                                 break;
2013                         }
2014
2015                         strip_blank_end(p);
2016
2017                         if (!strncmp(p, "include", strlen("include"))) {
2018                                 char *filename = p + strlen("include") + 1,
2019                                         *ts, *full_fn = NULL;
2020
2021                                 /*
2022                                  * Allow for the include filename
2023                                  * specification to be relative.
2024                                  */
2025                                 if (access(filename, F_OK) &&
2026                                     (ts = strrchr(file, '/'))) {
2027                                         if (asprintf(&full_fn, "%.*s%s",
2028                                                  (int)(ts - file + 1), file,
2029                                                  filename) < 0) {
2030                                                 ret = ENOMEM;
2031                                                 break;
2032                                         }
2033                                         filename = full_fn;
2034                                 }
2035
2036                                 ret = __parse_jobs_ini(td, filename, is_buf,
2037                                                        stonewall_flag, type, 1,
2038                                                        name, &opts,
2039                                                        &alloc_opts, &num_opts);
2040
2041                                 if (ret) {
2042                                         log_err("Error %d while parsing "
2043                                                 "include file %s\n",
2044                                                 ret, filename);
2045                                 }
2046
2047                                 if (full_fn)
2048                                         free(full_fn);
2049
2050                                 if (ret)
2051                                         break;
2052
2053                                 continue;
2054                         }
2055
2056                         if (num_opts == alloc_opts) {
2057                                 alloc_opts <<= 1;
2058                                 opts = realloc(opts,
2059                                                 alloc_opts * sizeof(char *));
2060                         }
2061
2062                         opts[num_opts] = strdup(p);
2063                         num_opts++;
2064                 }
2065
2066                 if (nested) {
2067                         *popts = opts;
2068                         *aopts = alloc_opts;
2069                         *nopts = num_opts;
2070                         goto out;
2071                 }
2072
2073                 ret = fio_options_parse(td, opts, num_opts);
2074                 if (!ret) {
2075                         if (dump_cmdline)
2076                                 dump_opt_list(td);
2077
2078                         ret = add_job(td, name, 0, 0, type);
2079                 } else {
2080                         log_err("fio: job %s dropped\n", name);
2081                         put_job(td);
2082                 }
2083
2084                 for (i = 0; i < num_opts; i++)
2085                         free(opts[i]);
2086                 num_opts = 0;
2087         } while (!ret);
2088
2089         if (dump_cmdline)
2090                 log_info("\n");
2091
2092         i = 0;
2093         while (i < nr_job_sections) {
2094                 free(job_sections[i]);
2095                 i++;
2096         }
2097
2098         free(opts);
2099 out:
2100         free(string);
2101         if (!nested)
2102                 free(name);
2103         if (!is_buf && f != stdin)
2104                 fclose(f);
2105         return ret;
2106 }
2107
2108 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
2109 {
2110         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
2111                         0, NULL, NULL, NULL, NULL);
2112 }
2113
2114 static int fill_def_thread(void)
2115 {
2116         memset(&def_thread, 0, sizeof(def_thread));
2117         INIT_FLIST_HEAD(&def_thread.opt_list);
2118
2119         fio_getaffinity(getpid(), &def_thread.o.cpumask);
2120         def_thread.o.error_dump = 1;
2121
2122         /*
2123          * fill default options
2124          */
2125         fio_fill_default_options(&def_thread);
2126         return 0;
2127 }
2128
2129 static void show_debug_categories(void)
2130 {
2131 #ifdef FIO_INC_DEBUG
2132         const struct debug_level *dl = &debug_levels[0];
2133         int curlen, first = 1;
2134
2135         curlen = 0;
2136         while (dl->name) {
2137                 int has_next = (dl + 1)->name != NULL;
2138
2139                 if (first || curlen + strlen(dl->name) >= 80) {
2140                         if (!first) {
2141                                 printf("\n");
2142                                 curlen = 0;
2143                         }
2144                         curlen += printf("\t\t\t%s", dl->name);
2145                         curlen += 3 * (8 - 1);
2146                         if (has_next)
2147                                 curlen += printf(",");
2148                 } else {
2149                         curlen += printf("%s", dl->name);
2150                         if (has_next)
2151                                 curlen += printf(",");
2152                 }
2153                 dl++;
2154                 first = 0;
2155         }
2156         printf("\n");
2157 #endif
2158 }
2159
2160 /*
2161  * Following options aren't printed by usage().
2162  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
2163  * --latency-log - Deprecated option.
2164  */
2165 static void usage(const char *name)
2166 {
2167         printf("%s\n", fio_version_string);
2168         printf("%s [options] [job options] <job file(s)>\n", name);
2169         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2170         show_debug_categories();
2171         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2172         printf("  --merge-blktrace-only\tMerge blktraces only, don't start any IO\n");
2173         printf("  --output\t\tWrite output to file\n");
2174         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2175         printf("  --minimal\t\tMinimal (terse) output\n");
2176         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2177         printf("  --terse-version=type\tSet terse version output format"
2178                 " (default 3, or 2 or 4)\n");
2179         printf("  --version\t\tPrint version info and exit\n");
2180         printf("  --help\t\tPrint this page\n");
2181         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2182         printf("  --crctest=[type]\tTest speed of checksum functions\n");
2183         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2184                 " them\n");
2185         printf("  --enghelp=engine\tPrint ioengine help, or list"
2186                 " available ioengines\n");
2187         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2188                 " cmd\n");
2189         printf("  --showcmd\t\tTurn a job file into command line options\n");
2190         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2191         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2192         printf("  --eta-newline=t\tForce a new line for every 't'");
2193         printf(" period passed\n");
2194         printf("  --status-interval=t\tForce full status dump every");
2195         printf(" 't' period passed\n");
2196         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2197                 " writes\n");
2198         printf("  --section=name\tOnly run specified section in job file,"
2199                 " multiple sections can be specified\n");
2200         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2201                 " (def 16384)\n");
2202         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2203         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2204         printf("  --server=args\t\tStart a backend fio server\n");
2205         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2206         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2207         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2208         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2209                 "\t\t\t(option=system,percpu) or run unit work\n"
2210                 "\t\t\tcalibration only (option=calibrate)\n");
2211 #ifdef CONFIG_ZLIB
2212         printf("  --inflate-log=log\tInflate and output compressed log\n");
2213 #endif
2214         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2215         printf("  --trigger-timeout=t\tExecute trigger at this time\n");
2216         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2217         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2218         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2219         printf("\nFio was written by Jens Axboe <axboe@kernel.dk>\n");
2220 }
2221
2222 #ifdef FIO_INC_DEBUG
2223 const struct debug_level debug_levels[] = {
2224         { .name = "process",
2225           .help = "Process creation/exit logging",
2226           .shift = FD_PROCESS,
2227         },
2228         { .name = "file",
2229           .help = "File related action logging",
2230           .shift = FD_FILE,
2231         },
2232         { .name = "io",
2233           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2234           .shift = FD_IO,
2235         },
2236         { .name = "mem",
2237           .help = "Memory allocation/freeing logging",
2238           .shift = FD_MEM,
2239         },
2240         { .name = "blktrace",
2241           .help = "blktrace action logging",
2242           .shift = FD_BLKTRACE,
2243         },
2244         { .name = "verify",
2245           .help = "IO verification action logging",
2246           .shift = FD_VERIFY,
2247         },
2248         { .name = "random",
2249           .help = "Random generation logging",
2250           .shift = FD_RANDOM,
2251         },
2252         { .name = "parse",
2253           .help = "Parser logging",
2254           .shift = FD_PARSE,
2255         },
2256         { .name = "diskutil",
2257           .help = "Disk utility logging actions",
2258           .shift = FD_DISKUTIL,
2259         },
2260         { .name = "job",
2261           .help = "Logging related to creating/destroying jobs",
2262           .shift = FD_JOB,
2263         },
2264         { .name = "mutex",
2265           .help = "Mutex logging",
2266           .shift = FD_MUTEX
2267         },
2268         { .name = "profile",
2269           .help = "Logging related to profiles",
2270           .shift = FD_PROFILE,
2271         },
2272         { .name = "time",
2273           .help = "Logging related to time keeping functions",
2274           .shift = FD_TIME,
2275         },
2276         { .name = "net",
2277           .help = "Network logging",
2278           .shift = FD_NET,
2279         },
2280         { .name = "rate",
2281           .help = "Rate logging",
2282           .shift = FD_RATE,
2283         },
2284         { .name = "compress",
2285           .help = "Log compression logging",
2286           .shift = FD_COMPRESS,
2287         },
2288         { .name = "steadystate",
2289           .help = "Steady state detection logging",
2290           .shift = FD_STEADYSTATE,
2291         },
2292         { .name = "helperthread",
2293           .help = "Helper thread logging",
2294           .shift = FD_HELPERTHREAD,
2295         },
2296         { .name = "zbd",
2297           .help = "Zoned Block Device logging",
2298           .shift = FD_ZBD,
2299         },
2300         { .name = NULL, },
2301 };
2302
2303 static int set_debug(const char *string)
2304 {
2305         const struct debug_level *dl;
2306         char *p = (char *) string;
2307         char *opt;
2308         int i;
2309
2310         if (!string)
2311                 return 0;
2312
2313         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2314                 log_info("fio: dumping debug options:");
2315                 for (i = 0; debug_levels[i].name; i++) {
2316                         dl = &debug_levels[i];
2317                         log_info("%s,", dl->name);
2318                 }
2319                 log_info("all\n");
2320                 return 1;
2321         }
2322
2323         while ((opt = strsep(&p, ",")) != NULL) {
2324                 int found = 0;
2325
2326                 if (!strncmp(opt, "all", 3)) {
2327                         log_info("fio: set all debug options\n");
2328                         fio_debug = ~0UL;
2329                         continue;
2330                 }
2331
2332                 for (i = 0; debug_levels[i].name; i++) {
2333                         dl = &debug_levels[i];
2334                         found = !strncmp(opt, dl->name, strlen(dl->name));
2335                         if (!found)
2336                                 continue;
2337
2338                         if (dl->shift == FD_JOB) {
2339                                 opt = strchr(opt, ':');
2340                                 if (!opt) {
2341                                         log_err("fio: missing job number\n");
2342                                         break;
2343                                 }
2344                                 opt++;
2345                                 fio_debug_jobno = atoi(opt);
2346                                 log_info("fio: set debug jobno %d\n",
2347                                                         fio_debug_jobno);
2348                         } else {
2349                                 log_info("fio: set debug option %s\n", opt);
2350                                 fio_debug |= (1UL << dl->shift);
2351                         }
2352                         break;
2353                 }
2354
2355                 if (!found)
2356                         log_err("fio: debug mask %s not found\n", opt);
2357         }
2358         return 0;
2359 }
2360 #else
2361 static int set_debug(const char *string)
2362 {
2363         log_err("fio: debug tracing not included in build\n");
2364         return 1;
2365 }
2366 #endif
2367
2368 static void fio_options_fill_optstring(void)
2369 {
2370         char *ostr = cmd_optstr;
2371         int i, c;
2372
2373         c = i = 0;
2374         while (l_opts[i].name) {
2375                 ostr[c++] = l_opts[i].val;
2376                 if (l_opts[i].has_arg == required_argument)
2377                         ostr[c++] = ':';
2378                 else if (l_opts[i].has_arg == optional_argument) {
2379                         ostr[c++] = ':';
2380                         ostr[c++] = ':';
2381                 }
2382                 i++;
2383         }
2384         ostr[c] = '\0';
2385 }
2386
2387 static int client_flag_set(char c)
2388 {
2389         int i;
2390
2391         i = 0;
2392         while (l_opts[i].name) {
2393                 int val = l_opts[i].val;
2394
2395                 if (c == (val & 0xff))
2396                         return (val & FIO_CLIENT_FLAG);
2397
2398                 i++;
2399         }
2400
2401         return 0;
2402 }
2403
2404 static void parse_cmd_client(void *client, char *opt)
2405 {
2406         fio_client_add_cmd_option(client, opt);
2407 }
2408
2409 static void show_closest_option(const char *name)
2410 {
2411         int best_option, best_distance;
2412         int i, distance;
2413
2414         while (*name == '-')
2415                 name++;
2416
2417         best_option = -1;
2418         best_distance = INT_MAX;
2419         i = 0;
2420         while (l_opts[i].name) {
2421                 distance = string_distance(name, l_opts[i].name);
2422                 if (distance < best_distance) {
2423                         best_distance = distance;
2424                         best_option = i;
2425                 }
2426                 i++;
2427         }
2428
2429         if (best_option != -1 && string_distance_ok(name, best_distance))
2430                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2431 }
2432
2433 static int parse_output_format(const char *optarg)
2434 {
2435         char *p, *orig, *opt;
2436         int ret = 0;
2437
2438         p = orig = strdup(optarg);
2439
2440         output_format = 0;
2441
2442         while ((opt = strsep(&p, ",")) != NULL) {
2443                 if (!strcmp(opt, "minimal") ||
2444                     !strcmp(opt, "terse") ||
2445                     !strcmp(opt, "csv"))
2446                         output_format |= FIO_OUTPUT_TERSE;
2447                 else if (!strcmp(opt, "json"))
2448                         output_format |= FIO_OUTPUT_JSON;
2449                 else if (!strcmp(opt, "json+"))
2450                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2451                 else if (!strcmp(opt, "normal"))
2452                         output_format |= FIO_OUTPUT_NORMAL;
2453                 else {
2454                         log_err("fio: invalid output format %s\n", opt);
2455                         ret = 1;
2456                         break;
2457                 }
2458         }
2459
2460         free(orig);
2461         return ret;
2462 }
2463
2464 int parse_cmd_line(int argc, char *argv[], int client_type)
2465 {
2466         struct thread_data *td = NULL;
2467         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2468         char *ostr = cmd_optstr;
2469         char *pid_file = NULL;
2470         void *cur_client = NULL;
2471         bool backend = false;
2472
2473         /*
2474          * Reset optind handling, since we may call this multiple times
2475          * for the backend.
2476          */
2477         optind = 1;
2478
2479         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2480                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2481                         parse_cmd_client(cur_client, argv[optind - 1]);
2482                         c &= ~FIO_CLIENT_FLAG;
2483                 }
2484
2485                 switch (c) {
2486                 case 'a':
2487                         smalloc_pool_size = atoi(optarg);
2488                         smalloc_pool_size <<= 10;
2489                         sinit();
2490                         break;
2491                 case 'l':
2492                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2493                         do_exit++;
2494                         exit_val = 1;
2495                         break;
2496                 case 'b':
2497                         write_bw_log = true;
2498                         break;
2499                 case 'o': {
2500                         FILE *tmp;
2501
2502                         if (f_out && f_out != stdout)
2503                                 fclose(f_out);
2504
2505                         tmp = fopen(optarg, "w+");
2506                         if (!tmp) {
2507                                 log_err("fio: output file open error: %s\n", strerror(errno));
2508                                 exit_val = 1;
2509                                 do_exit++;
2510                                 break;
2511                         }
2512                         f_err = f_out = tmp;
2513                         break;
2514                         }
2515                 case 'm':
2516                         output_format = FIO_OUTPUT_TERSE;
2517                         break;
2518                 case 'F':
2519                         if (parse_output_format(optarg)) {
2520                                 log_err("fio: failed parsing output-format\n");
2521                                 exit_val = 1;
2522                                 do_exit++;
2523                                 break;
2524                         }
2525                         break;
2526                 case 'f':
2527                         output_format |= FIO_OUTPUT_TERSE;
2528                         break;
2529                 case 'h':
2530                         did_arg = true;
2531                         if (!cur_client) {
2532                                 usage(argv[0]);
2533                                 do_exit++;
2534                         }
2535                         break;
2536                 case 'c':
2537                         did_arg = true;
2538                         if (!cur_client) {
2539                                 fio_show_option_help(optarg);
2540                                 do_exit++;
2541                         }
2542                         break;
2543                 case 'i':
2544                         did_arg = true;
2545                         if (!cur_client) {
2546                                 fio_show_ioengine_help(optarg);
2547                                 do_exit++;
2548                         }
2549                         break;
2550                 case 's':
2551                         did_arg = true;
2552                         dump_cmdline = true;
2553                         break;
2554                 case 'r':
2555                         read_only = 1;
2556                         break;
2557                 case 'v':
2558                         did_arg = true;
2559                         if (!cur_client) {
2560                                 log_info("%s\n", fio_version_string);
2561                                 do_exit++;
2562                         }
2563                         break;
2564                 case 'V':
2565                         terse_version = atoi(optarg);
2566                         if (!(terse_version >= 2 && terse_version <= 5)) {
2567                                 log_err("fio: bad terse version format\n");
2568                                 exit_val = 1;
2569                                 do_exit++;
2570                         }
2571                         break;
2572                 case 'e':
2573                         if (!strcmp("always", optarg))
2574                                 eta_print = FIO_ETA_ALWAYS;
2575                         else if (!strcmp("never", optarg))
2576                                 eta_print = FIO_ETA_NEVER;
2577                         break;
2578                 case 'E': {
2579                         long long t = 0;
2580
2581                         if (check_str_time(optarg, &t, 1)) {
2582                                 log_err("fio: failed parsing eta time %s\n", optarg);
2583                                 exit_val = 1;
2584                                 do_exit++;
2585                                 break;
2586                         }
2587                         eta_new_line = t / 1000;
2588                         if (!eta_new_line) {
2589                                 log_err("fio: eta new line time too short\n");
2590                                 exit_val = 1;
2591                                 do_exit++;
2592                         }
2593                         break;
2594                         }
2595                 case 'O': {
2596                         long long t = 0;
2597
2598                         if (check_str_time(optarg, &t, 1)) {
2599                                 log_err("fio: failed parsing eta interval %s\n", optarg);
2600                                 exit_val = 1;
2601                                 do_exit++;
2602                                 break;
2603                         }
2604                         eta_interval_msec = t / 1000;
2605                         if (eta_interval_msec < DISK_UTIL_MSEC) {
2606                                 log_err("fio: eta interval time too short (%umsec min)\n", DISK_UTIL_MSEC);
2607                                 exit_val = 1;
2608                                 do_exit++;
2609                         }
2610                         break;
2611                         }
2612                 case 'd':
2613                         if (set_debug(optarg))
2614                                 do_exit++;
2615                         break;
2616                 case 'P':
2617                         did_arg = true;
2618                         parse_only = true;
2619                         break;
2620                 case 'x': {
2621                         size_t new_size;
2622
2623                         if (!strcmp(optarg, "global")) {
2624                                 log_err("fio: can't use global as only "
2625                                         "section\n");
2626                                 do_exit++;
2627                                 exit_val = 1;
2628                                 break;
2629                         }
2630                         new_size = (nr_job_sections + 1) * sizeof(char *);
2631                         job_sections = realloc(job_sections, new_size);
2632                         job_sections[nr_job_sections] = strdup(optarg);
2633                         nr_job_sections++;
2634                         break;
2635                         }
2636 #ifdef CONFIG_ZLIB
2637                 case 'X':
2638                         exit_val = iolog_file_inflate(optarg);
2639                         did_arg = true;
2640                         do_exit++;
2641                         break;
2642 #endif
2643                 case 'p':
2644                         did_arg = true;
2645                         if (exec_profile)
2646                                 free(exec_profile);
2647                         exec_profile = strdup(optarg);
2648                         break;
2649                 case FIO_GETOPT_JOB: {
2650                         const char *opt = l_opts[lidx].name;
2651                         char *val = optarg;
2652
2653                         if (!strncmp(opt, "name", 4) && td) {
2654                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2655                                 if (ret)
2656                                         goto out_free;
2657                                 td = NULL;
2658                                 did_arg = true;
2659                         }
2660                         if (!td) {
2661                                 int is_section = !strncmp(opt, "name", 4);
2662                                 int global = 0;
2663
2664                                 if (!is_section || !strncmp(val, "global", 6))
2665                                         global = 1;
2666
2667                                 if (is_section && skip_this_section(val))
2668                                         continue;
2669
2670                                 td = get_new_job(global, &def_thread, true, NULL);
2671                                 if (!td || ioengine_load(td)) {
2672                                         if (td) {
2673                                                 put_job(td);
2674                                                 td = NULL;
2675                                         }
2676                                         do_exit++;
2677                                         exit_val = 1;
2678                                         break;
2679                                 }
2680                                 fio_options_set_ioengine_opts(l_opts, td);
2681                         }
2682
2683                         if ((!val || !strlen(val)) &&
2684                             l_opts[lidx].has_arg == required_argument) {
2685                                 log_err("fio: option %s requires an argument\n", opt);
2686                                 ret = 1;
2687                         } else
2688                                 ret = fio_cmd_option_parse(td, opt, val);
2689
2690                         if (ret) {
2691                                 if (td) {
2692                                         put_job(td);
2693                                         td = NULL;
2694                                 }
2695                                 do_exit++;
2696                                 exit_val = 1;
2697                         }
2698
2699                         if (!ret && !strcmp(opt, "ioengine")) {
2700                                 if (ioengine_load(td)) {
2701                                         put_job(td);
2702                                         td = NULL;
2703                                         do_exit++;
2704                                         exit_val = 1;
2705                                         break;
2706                                 }
2707                                 fio_options_set_ioengine_opts(l_opts, td);
2708                         }
2709                         break;
2710                 }
2711                 case FIO_GETOPT_IOENGINE: {
2712                         const char *opt = l_opts[lidx].name;
2713                         char *val = optarg;
2714
2715                         if (!td)
2716                                 break;
2717
2718                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2719                         break;
2720                 }
2721                 case 'w':
2722                         warnings_fatal = 1;
2723                         break;
2724                 case 'j':
2725                         max_jobs = atoi(optarg);
2726                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2727                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2728                                 do_exit++;
2729                                 exit_val = 1;
2730                         }
2731                         break;
2732                 case 'S':
2733                         did_arg = true;
2734 #ifndef CONFIG_NO_SHM
2735                         if (nr_clients) {
2736                                 log_err("fio: can't be both client and server\n");
2737                                 do_exit++;
2738                                 exit_val = 1;
2739                                 break;
2740                         }
2741                         if (optarg)
2742                                 fio_server_set_arg(optarg);
2743                         is_backend = true;
2744                         backend = true;
2745 #else
2746                         log_err("fio: client/server requires SHM support\n");
2747                         do_exit++;
2748                         exit_val = 1;
2749 #endif
2750                         break;
2751                 case 'D':
2752                         if (pid_file)
2753                                 free(pid_file);
2754                         pid_file = strdup(optarg);
2755                         break;
2756                 case 'I':
2757                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2758                                 /* exit on error and calibration only */
2759                                 did_arg = true;
2760                                 do_exit++;
2761                                 if (ret == -1)
2762                                         exit_val = 1;
2763                         }
2764                         break;
2765                 case 'C':
2766                         did_arg = true;
2767                         if (is_backend) {
2768                                 log_err("fio: can't be both client and server\n");
2769                                 do_exit++;
2770                                 exit_val = 1;
2771                                 break;
2772                         }
2773                         /* if --client parameter contains a pathname */
2774                         if (0 == access(optarg, R_OK)) {
2775                                 /* file contains a list of host addrs or names */
2776                                 char hostaddr[PATH_MAX] = {0};
2777                                 char formatstr[8];
2778                                 FILE * hostf = fopen(optarg, "r");
2779                                 if (!hostf) {
2780                                         log_err("fio: could not open client list file %s for read\n", optarg);
2781                                         do_exit++;
2782                                         exit_val = 1;
2783                                         break;
2784                                 }
2785                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2786                                 /*
2787                                  * read at most PATH_MAX-1 chars from each
2788                                  * record in this file
2789                                  */
2790                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2791                                         /* expect EVERY host in file to be valid */
2792                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2793                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2794                                                 do_exit++;
2795                                                 exit_val = 1;
2796                                                 break;
2797                                         }
2798                                 }
2799                                 fclose(hostf);
2800                                 break; /* no possibility of job file for "this client only" */
2801                         }
2802                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2803                                 log_err("fio: failed adding client %s\n", optarg);
2804                                 do_exit++;
2805                                 exit_val = 1;
2806                                 break;
2807                         }
2808                         /*
2809                          * If the next argument exists and isn't an option,
2810                          * assume it's a job file for this client only.
2811                          */
2812                         while (optind < argc) {
2813                                 if (!strncmp(argv[optind], "--", 2) ||
2814                                     !strncmp(argv[optind], "-", 1))
2815                                         break;
2816
2817                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2818                                         break;
2819                                 optind++;
2820                         }
2821                         break;
2822                 case 'R':
2823                         did_arg = true;
2824                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2825                                 do_exit++;
2826                                 exit_val = 1;
2827                         }
2828                         break;
2829                 case 'T':
2830                         did_arg = true;
2831                         do_exit++;
2832                         exit_val = fio_monotonic_clocktest(1);
2833                         break;
2834                 case 'G':
2835                         did_arg = true;
2836                         do_exit++;
2837                         exit_val = fio_crctest(optarg);
2838                         break;
2839                 case 'M':
2840                         did_arg = true;
2841                         do_exit++;
2842                         exit_val = fio_memcpy_test(optarg);
2843                         break;
2844                 case 'L': {
2845                         long long val;
2846
2847                         if (check_str_time(optarg, &val, 1)) {
2848                                 log_err("fio: failed parsing time %s\n", optarg);
2849                                 do_exit++;
2850                                 exit_val = 1;
2851                                 break;
2852                         }
2853                         if (val < 1000) {
2854                                 log_err("fio: status interval too small\n");
2855                                 do_exit++;
2856                                 exit_val = 1;
2857                         }
2858                         status_interval = val / 1000;
2859                         break;
2860                         }
2861                 case 'W':
2862                         if (trigger_file)
2863                                 free(trigger_file);
2864                         trigger_file = strdup(optarg);
2865                         break;
2866                 case 'H':
2867                         if (trigger_cmd)
2868                                 free(trigger_cmd);
2869                         trigger_cmd = strdup(optarg);
2870                         break;
2871                 case 'J':
2872                         if (trigger_remote_cmd)
2873                                 free(trigger_remote_cmd);
2874                         trigger_remote_cmd = strdup(optarg);
2875                         break;
2876                 case 'K':
2877                         if (aux_path)
2878                                 free(aux_path);
2879                         aux_path = strdup(optarg);
2880                         break;
2881                 case 'B':
2882                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2883                                 log_err("fio: failed parsing time %s\n", optarg);
2884                                 do_exit++;
2885                                 exit_val = 1;
2886                         }
2887                         trigger_timeout /= 1000000;
2888                         break;
2889
2890                 case 'A':
2891                         did_arg = true;
2892                         merge_blktrace_only = true;
2893                         break;
2894                 case '?':
2895                         log_err("%s: unrecognized option '%s'\n", argv[0],
2896                                                         argv[optind - 1]);
2897                         show_closest_option(argv[optind - 1]);
2898                         /* fall through */
2899                 default:
2900                         do_exit++;
2901                         exit_val = 1;
2902                         break;
2903                 }
2904                 if (do_exit)
2905                         break;
2906         }
2907
2908         if (do_exit && !(is_backend || nr_clients))
2909                 exit(exit_val);
2910
2911         if (nr_clients && fio_clients_connect())
2912                 exit(1);
2913
2914         if (is_backend && backend)
2915                 return fio_start_server(pid_file);
2916         else if (pid_file)
2917                 free(pid_file);
2918
2919         if (td) {
2920                 if (!ret) {
2921                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2922                         if (ret)
2923                                 exit(1);
2924                 }
2925         }
2926
2927         while (!ret && optind < argc) {
2928                 ini_idx++;
2929                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2930                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2931                 optind++;
2932         }
2933
2934 out_free:
2935         return ini_idx;
2936 }
2937
2938 int fio_init_options(void)
2939 {
2940         f_out = stdout;
2941         f_err = stderr;
2942
2943         fio_options_fill_optstring();
2944         fio_options_dup_and_init(l_opts);
2945
2946         atexit(free_shm);
2947
2948         if (fill_def_thread())
2949                 return 1;
2950
2951         return 0;
2952 }
2953
2954 extern int fio_check_options(struct thread_options *);
2955
2956 int parse_options(int argc, char *argv[])
2957 {
2958         const int type = FIO_CLIENT_TYPE_CLI;
2959         int job_files, i;
2960
2961         if (fio_init_options())
2962                 return 1;
2963         if (fio_test_cconv(&def_thread.o))
2964                 log_err("fio: failed internal cconv test\n");
2965
2966         job_files = parse_cmd_line(argc, argv, type);
2967
2968         if (job_files > 0) {
2969                 for (i = 0; i < job_files; i++) {
2970                         if (i && fill_def_thread())
2971                                 return 1;
2972                         if (nr_clients) {
2973                                 if (fio_clients_send_ini(ini_file[i]))
2974                                         return 1;
2975                                 free(ini_file[i]);
2976                         } else if (!is_backend) {
2977                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2978                                         return 1;
2979                                 free(ini_file[i]);
2980                         }
2981                 }
2982         } else if (nr_clients) {
2983                 if (fill_def_thread())
2984                         return 1;
2985                 if (fio_clients_send_ini(NULL))
2986                         return 1;
2987         }
2988
2989         free(ini_file);
2990         fio_options_free(&def_thread);
2991         filesetup_mem_free();
2992
2993         if (!thread_number) {
2994                 if (parse_dryrun())
2995                         return 0;
2996                 if (exec_profile)
2997                         return 0;
2998                 if (is_backend || nr_clients)
2999                         return 0;
3000                 if (did_arg)
3001                         return 0;
3002
3003                 log_err("No job(s) defined\n\n");
3004                 usage(argv[0]);
3005                 return 1;
3006         }
3007
3008         if (output_format & FIO_OUTPUT_NORMAL)
3009                 log_info("%s\n", fio_version_string);
3010
3011         return 0;
3012 }
3013
3014 void options_default_fill(struct thread_options *o)
3015 {
3016         memcpy(o, &def_thread.o, sizeof(*o));
3017 }
3018
3019 struct thread_data *get_global_options(void)
3020 {
3021         return &def_thread;
3022 }